Đồ Án Sấy Thùng Quay (Có Lót Gạch)
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BẢNG TÍNH TOÁN Được viết bởi: DT: Email: SỐ LIỆU CHO TRƯ Cường độ bốc hơi ẩm: Năng suất: Độ ẩm ban đầu của VLS: Độ ẩm cuối của VLS: Các số liệu tra bảng sẽ được điền trong khi tính toán, ngay s Các số liệu ở các ô màu vàng có viền xanh là bắt buộc phải Các số liệu ở ô màu vàng không có viền xanh có thể thay đổ Một số ô số liệu phải đọc theo hướng dẫn của dòng chữ có Đối với TBS không lót gạch bên trong thì bỏ qua các dòng c Các ô có màu trắng không được thay đổi gì. Chương trình PasCal sẽ giúp giải nhanh phần tính toán quá TÀI LIỆU THAM KHẢO 1. Nguyễn Bin, Các quá trình thiêt bị trong công nghệ hoá ch 2. Phạm Xuân Toản, Các quá trình thiêt bị trong công nghệ 3. Trần Xoa, Nguyễn Trọng Khuông, Hồ Lê Viên, Sổ tay quá 4. Trần Xoa, Nguyễn Trọng Khuông, Phạm Xuân Toản, Sổ t 5. Bộ môn máy hoá chất, Tính toán thiết kế thiết bị máy hoá 6. Hồ Lê Viên, Máy hoá chất. 7. Trần Văn Phú, Tính toán và thiết kế hệ thống sấy. 8. Hồ Lê Viên, Tính toán thiêt kế các chi tiêt thiết bị hoá chất 9. Trần Văn Phú, Hướng dẫn thiết kế thiết bị sấy. 10. Hoàng Văn Chước, Kỹ thuật sấy. 11. Trịnh Chất, Lê Văn Uyển, Tính toán thiết kế hệ thống dẫ 12. Nguyễn Trọng Hiệp, Chi tiết máy, tập 1,2. 13. Hồ Lê Viên, Cơ sở thiêt kế máy hoá chất. 14. Lã Đình Thao, Các quá trình và máy gia công cơ học tro TranVan
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đồ án excel
Transcript of Đồ Án Sấy Thùng Quay (Có Lót Gạch)
Sheet2
Sheet1BNG TNH TON THIT K THIT B SY THNG QUAYTTTc vit bi:Trn Vn
ByChnh sa ln cui:TDT:096 223 282604.12.2014Nhit ni
suy:36.636382861Kt qu nht:16.6370927547Bng I. 255 - 318 - STT1Nhit
ni suy:340.5Kt qu nht:54.1053Nhit ni suy:36.636382861Kt qu hs dn
nhit:2.7297274457Email:[email protected]
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s dn
nhit2.0352.1192.22.282.3612.442.512.62.672.762.832.92.973.053.133.213.343.493.643.7763.934.274.614.915.235.746.2256.717.177.638.079.15
nht ng
hc9.2310.0410.812.7912.413.2814.1615.061616.9617.9518.9720.0221.0922.123.1325.4527.830.0932.4934.8540.6148.3355.4653.0979.2896.89115.4134.8155.1177.1223.7S
LIU CHO
TRC:16.247547011715.864365097424.060640189310.581181068416.504001691816.504001691816.557274457516.623819988916.637092754716.627001903216.586911051816.516820200416.450092966116.71027466916.603547434715.779820411915.654774986215.964865837615.286365943315.573093177616.03051130567.666657513710.77434819670.3134354524-42.0749313287-2.3183329782-7.3886055324-13.292541725-20.1628142792-34.8399957706-47.3637227934FFFFFFFFTFFFFFFFFFFFFFFFFFFFFFFERROR:#REF!Cng
bc hi m:Nhit khi
vo:2.7627456162.73975470122.73309106292.73875470122.72942742462.696454682.74972744572.716454682.72972744572.736454682.736454682.736454682.70309106292.70309106292.70309106292.79813648862.71477287152.71477287152.80112740352.6721001482.81912740352.81912740353.02981829722.90447285033.37684555263.49268645693.49268645693.65852736123.65852736123.83120008462.8678364674FFFFFFFFTFFFFFFFFFFFFFFFFFFFFFFERROR:#REF!Nng
sut:Nhit khi
ra:40.860538.95884.5295-1.269543.24443.24443.90545.18745.80846.709547.58148.422548.963547.400547.901551.02851.3587550.7572551.7551.42951.035654.583254.105355.910337.5069551.1920548.8565545.65741.521532.0123.4365ERROR:#DIV/0!FFFFFFFFFFFFFFFFFFFFFFTFFFFFFFFF
m ban u ca VLS:Nhit mi trng: m cui ca VLS: m mi trng:Ph lc 5 - 349
-
TTTKHTSTFFFFFFFFTFFFFFTFF010305070901000.760000240.7610.7610.758500120.7620.7620.760000240.76550656040.7610.7610.76125328020.7620.7620.76125328020.76527953550.7610.7610.76113976780.7620.7620.7611397678-100.760.7610.7610.7610.7620.7620.7620.789000240.789500120.789500120.789500120.789500120.7940.789000240.79450656040.79225328020.79225328020.79225328020.79225328020.7940.79225328020.79427953550.79213976780.79213976780.79213976780.79213976780.7940.792139767800.7890.790.7910.7920.7930.7940.7940.8040.803000240.804500120.802000240.805500120.801000240.8040.8040.80850656040.80725328020.80750656040.80825328020.80650656040.80750656040.8040.80827953550.80713976780.80727953550.80813976780.80627953550.8072795355Cc
s liu tra bng s c in trong khi tnh ton, ngay sau phn cng thc
tnh.50.8040.8040.8060.8070.8090.810.8110.818000240.818000240.818000240.818000240.818000240.818000240.818000240.82350656040.82350656040.82350656040.82350656040.82350656040.82350656040.82350656040.82327953550.82327953550.82327953550.82327953550.82327953550.82327953550.8232795355100.8180.8190.8210.8230.8250.8270.8280.84700048010.84700048010.84700048010.84700048010.84700048010.84700048010.84700048010.85801312080.85801312080.85801312080.85801312080.85801312080.85801312080.85801312080.8575590710.8575590710.8575590710.8575590710.8575590710.8575590710.857559071Cc
s liu cc mu vng c vin xanh l bt buc phi nhp
vo.200.8470.8490.8530.8570.8610.8650.8670.87600096020.87650084020.87500096020.87500096020.87500096020.87500096020.87600096020.89802624160.89577296140.89702624160.89702624160.89702624160.89702624160.89702624160.89711814210.89497837430.89611814210.89611814210.89611814210.89611814210.8961181421300.8760.880.8870.8950.9030.9110.9150.90500168030.90550156030.90250180030.90500168030.89800192040.90700168030.90500168030.94354592280.94129264260.9437992030.94354592280.94205248320.94554592280.94354592280.94195674870.93981698090.94209651640.94195674870.94023628420.94395674870.9419567487Cc
s liu mu vng khng c vin xanh c th thay i s liu hoc gi
nguyn400.9050.9120.9250.940.9540.970.9770.93400264050.93250300060.93100312060.93600288060.91500360070.87000480090.93400264050.99457216441.0013320051.00258528521.00207872480.9975984060.98013120811.00207872480.99207489070.9984941940.99963396180.99935442630.99419303280.97559071040.9993544263500.9340.9450.970.9961.021.051.070.96300456090.96300456090.94500600120.94500600120.9450060012-1.25993518740.96300456091.06762464771.06762464771.08266401011.08266401011.08266401010.22677130881.08266401011.06331117491.06331117491.07698838811.07698838811.07698838810.1654745911.0769883881Mt
s s liu phi c theo hng dn ca dng ch c nn , tra s liu ri nhp
vo600.9630.9821.021.071.121.171.440.99200672130.98500840160.97000960190.92001200230.88501320262.99995679160.99200672131.14618369131.17772961411.19026241611.19532802011.18786082222.00881912751.19532802011.13982699461.16978374331.18118142091.18397677611.17537445372.0496836061.1839767761700.9921.021.091.171.271.381.21.02001200231.01001440280.96501800350.86502280440.62003120610.35003840741.02001200231.29532802011.34039362421.37799203021.38812323831.33585285241.23104966441.38812323831.28397677611.32677213131.36096516421.36655587461.30633961791.19472568361.3665558746i
vi TBS khng lt gch bn trong th b qua cc dng c nn mu xanh v nn thay
i li k hiu cng
thc.801.021.071.191.341.531.791.951.05001920371.03002400470.8800360070.5050540105-0.7199039814-3.32983436791.05001920371.49052483221.58065604031.70598406041.74397609061.48262416110.46952667791.74397609061.47236284181.55795355221.67193032831.69289549251.39181420890.31287951031.6928954925901.051.131.331.632.082.883.571.08002880561.03004080790.5950756147-1.479824766-21.8141274308ERROR:#DIV/0!1.08002880561.74078724831.96611526852.32956652692.539789094-1.7986529358ERROR:#DIV/0!2.5397890941.71354426271.92752103882.25805368952.3740609312-2.6238883768ERROR:#DIV/0!2.3740609312Cc
c mu trng khng c thay i
g.99.41.081.21.542.173.6310.91.07003120611.02504200810.6200744144-1.479824766-21.8141274308ERROR:#DIV/0!1.07003120611.78585285241.98864807052.32703372492.539789094-1.7986529358ERROR:#DIV/0!2.5397890941.75633961791.94891871642.25665601192.3740609312-2.6238883768ERROR:#DIV/0!2.37406093121001.071.21.552.173.6310.91.1100360071.07504440860.6550780151-1.5698151642-23.0590782213ERROR:#DIV/0!1.1100360071.93598406042.09371367452.44463213092.6700515102-1.9148080532ERROR:#DIV/0!2.67005151021.90193032832.05171407162.37084904472.4952423521-2.7865835948ERROR:#DIV/0!2.4952423521Chng
trnh PasCal s gip gii nhanh phn tnh ton qu trnh sy
thc.1201.111.261.632.283.8211.51.19003360651.14004560880.6750828161-1.6248067625-23.954041014ERROR:#DIV/0!1.19003360651.96091845642.18624647652.5747633392.8077811243-1.9562911908ERROR:#DIV/0!2.80778112431.92913497312.14311174922.49643975522.6250260954-2.8632555888ERROR:#DIV/0!2.62502609541401.191.331.712.44.01121.25003360651.19004800930.7100864168-1.6897983609-25.2439906043ERROR:#DIV/0!1.25003360652.02091845642.29131208062.6923617452.9355107384-2.0899135062ERROR:#DIV/0!2.93551073841.98913497312.24590710442.6106327882.7448098386-3.0445531292ERROR:#DIV/0!2.74480983861601.251.391.792.514.1912.61.3100360071.25504920950.7300912177-1.7447899593-26.4889413947ERROR:#DIV/0!1.3100360072.13598406042.38384488262.82249295313.0732403525-2.2060686236ERROR:#DIV/0!3.07324035252.10193032832.3373047822.73622349842.8745935819-3.2072483471ERROR:#DIV/0!2.8745935819TI
LIU THAM
KHO1801.311.461.872.634.3813.21.3700360071.30005281020.7900936182-1.8347803574-27.3839041875ERROR:#DIV/0!1.3700360072.19598406042.51144328862.93755855713.2035027686-2.2475517612ERROR:#DIV/0!3.20350276862.16193032832.46149781492.84901885372.9957750028-3.2839203412ERROR:#DIV/0!2.99577500282001.371.521.962.744.5713.71.42003840741.35005521070.8100984191-1.8897719558-28.628854978ERROR:#DIV/0!1.42003840742.30104966442.61650889263.06768976513.3412323827-2.3637068786ERROR:#DIV/0!3.34123238272.26472568362.56429317012.97460956413.1255587461-3.4466155591ERROR:#DIV/0!3.12555874611.
Nguyn Bin, Cc qu trnh thit b trong cng ngh ho cht v thc phm, tp
1,2,4.2201.421.582.042.864.7614.31.48004080791.41505641090.8451020198-1.9797623539-29.8738057684ERROR:#DIV/0!1.48004080792.41611526852.70904169473.18528817123.4714947988-2.4798619961ERROR:#DIV/0!3.47149479882.37752103882.65569084773.08880259693.246740167-3.6093107771ERROR:#DIV/0!3.2467401672.
Phm Xun Ton, Cc qu trnh thit b trong cng ngh ho cht v thc phm, tp
3.2401.481.652.122.974.9514.91.54004080791.46505881140.8651068207-2.0597527521-30.7237697614ERROR:#DIV/0!1.54004080792.47611526852.81410729873.31541937923.6117572149-2.5038779356ERROR:#DIV/0!3.61175721492.43752103882.75848620293.21439330743.3779215879-3.6673804488ERROR:#DIV/0!3.37792158793.
Trn Xoa, Nguyn Trng Khung, H L Vin, S tay qu trnh v thit b cng ngh
ho cht, tp
1.2601.541.712.23.095.1515.41.60004320841.53006001160.9001104214-2.1497431502-31.9687205519ERROR:#DIV/0!1.60004320842.59118087252.90664010073.43301778533.742019631-2.6200330531ERROR:#DIV/0!3.7420196312.5503163942.84988388053.32858634023.4991030087-3.8300756667ERROR:#DIV/0!3.49910300874.
Trn Xoa, Nguyn Trng Khung, Phm Xun Ton, S tay qu trnh v thit b cng
ngh ho cht, tp
2.2801.61.782.283.25.34161.66004320841.57506361230.9451140221-2.2047347486-33.2136713424ERROR:#DIV/0!1.66004320842.65118087253.03423850673.56061619133.8797492451-2.7361881705ERROR:#DIV/0!3.87974924512.6103163942.97407691343.4527793733.628886752-3.9927708847ERROR:#DIV/0!3.6288867525.
B mn my ho cht, Tnh ton thit k thit b my ho
cht.3001.661.842.373.325.5316.61.94005281021.85007441441.1151332258-2.6096879395-39.0434384972ERROR:#DIV/0!1.94005281023.15144328863.55703372494.17114102364.5485285236-3.2248245798ERROR:#DIV/0!4.54852852363.10149781493.48665601194.04514221484.2533961788-4.7016214281ERROR:#DIV/0!4.25339617886.
H L Vin, My ho
cht.4001.942.162.783.896.4919.52.23006001162.12508521651.2701536298-2.9796423306-44.5232176544ERROR:#DIV/0!2.23006001163.60664010074.0798289434.79419865785.2247750002-3.6387890092ERROR:#DIV/0!5.22477500023.54988388053.99923511044.64890273424.8865079281-5.3244487477ERROR:#DIV/0!4.88650792817.
Trn Vn Ph, Tnh ton v thit k h thng
sy.5002.232.483.194.477.4522.32.5200672132.40009601861.4251740337-3.3495967218-50.3529848092ERROR:#DIV/0!2.5200672134.06183691284.60262416115.4172562925.9010214767-4.1274254185ERROR:#DIV/0!5.90102147673.99826994624.51181420895.25266325365.5196196773-6.0332992912ERROR:#DIV/0!5.51961967738.
H L Vin, Tnh ton thit k cc chi tit thit b ho cht v du
kh.6002.522.83.65.058.4125.22.81007441442.67010802091.6201920372-3.7545499127-56.1827519641ERROR:#DIV/0!2.81007441444.51703372495.14795218136.02524832226.5698007553-4.6160618278ERROR:#DIV/0!6.56980075534.44665601195.0457909855.84362841786.1441291041-6.7421498347ERROR:#DIV/0!6.14412910419.
Trn Vn Ph, Hng dn thit k thit b
sy.7002.813.124.025.629.3728.13.10008401632.96011762281.7752124412-4.0495079046-62.1475155182ERROR:#DIV/0!3.10008401635.0272961415.65821459746.64830595657.2384488257-5.157099831ERROR:#DIV/0!7.23844882574.94783743285.54697240596.44738893716.7730478205-7.5068073453ERROR:#DIV/0!6.773047820510.
Hong Vn Chc, K thut
sy.8003.13.454.436.210.3310.78900384070.79700156030.77450336070.77450276060.77450192050.64400000020.789003840727.53280201416.26640100722.53280201422.53280201422.5328020145.06560402822.53280201426.39767761115.698838805521.39767761121.39767761121.3976776112.795355221921.39767761111.
Trnh Cht, L Vn Uyn, Tnh ton thit k h thng dn ng c
kh.-100510203040506070809099.410012014016018020022024026028030040050060070080012.
Nguyn Trng Hip, Chi tit my, tp
1,2.0.760000240.789000240.8040.818000240.84700048010.87600096020.90500168030.93400264050.96300456090.99200672131.02001200231.05001920371.08002880561.07003120611.1100360071.19003360651.25003360651.3100360071.3700360071.42003840741.48004080791.54004080791.60004320841.66004320841.94005281022.23006001162.5200672132.81007441443.10008401630.789003840713.
H L Vin, C s thit k my ho
cht.2.529000242.58897143452.47002856552.52901440282.52902832552.52904200812.52905545082.5291082612.52912122352.47628661562.58038647492.6781997303-7.26130173942.07015122933.02997839582.57003360652.57008641682.5700360072.37008401632.56008401632.56004080792.56008161582.56004320842.5000720142.5200672132.5200672132.5200672132.5200648126ERROR:#DIV/0!ERROR:#DIV/0!14.
L nh Thao, Cc qu trnh v my gia cng c hc trong cng nghip ho cht, tp
2.FFFFFFFFFFFFFFFFFFFFFFFFFFTFFF15. Hong Vn chc, Thit k h thng thit
b
sy.0.76125328020.79225328020.80750656040.82350656040.85801312080.89702624160.94354592281.00207872481.08266401011.19532802011.38812323831.74397609062.5397890942.5397890942.67005151022.80778112432.93551073843.07324035253.20350276863.34123238273.47149479883.61175721493.7420196313.87974924514.54852852365.22477500025.90102147676.56980075537.238448825722.53280201416.
Trn Minh T, Sc bn vt liu 1.FFFFFFFFFFTFFFFFFFFFFFFFFFFFFF17. L
Cung, Nguyn l
my.0.76113976780.79213976780.80727953550.82327953550.8575590710.89611814210.94195674870.99935442631.07698838811.18397677611.36655587461.69289549252.37406093122.37406093122.49524235212.62502609542.74480983862.87459358192.99577500283.12555874613.2467401673.37792158793.49910300873.6288867524.25339617884.88650792815.51961967736.14412910416.773047820521.397677611FFFFFFFFFFTFFFFFFFFFFFFFFFFFFFA.
TNH TON CNG NGHI. Tnh kch thc c bn ca thng sy- Cng bc hi m:A=50 m
ni suy:0.0024004655* Cn bng vt cht:Kt qu lu lng th tch
ring:2.520067213 , - Khi lng vt liu vo, ra TBS.kg/h
=200Tn/Ngy=8333.3333333333kg/hNhit ni suy:600 , - m tng i ca VLS
vo, ra TBS.% =22%5%W - Lng m bc hi trong 1h.kg/h m ni
suy:55.065604028 - Khi lng VLS kh tuyt i. kg/hKt qu lu lng th tch
ring:1.3881232383Nhit ni suy:81=1816.2393162393kg/h(7.27-289-QTTB4)
m ni suy:52.7953552219Kt qu lu lng th tch
ring:1.3665558746=7916.6666666667kg/h(7.22-289-QTTB4)Nhit ni
suy:81=10149.5726495727kg/h(7.21-289-QTTB4)* Cc kch thc c bn ca
thng sy:- Th tch thng sy:=36.3247863248(VII.50-221-STT2)Nhit ni
suy:600Nhit dung:0.527Bng I.149, I.150 - 168,169 - STT1Nhit ni
suy:81Nhit dung:0.9789Nhit ni suy:23.4Nhit dung:0.99883Nhit
020406080100120140160180200220240260280300320340360380400420440460480500520540560580600620640660680700720740-
Chn ng knh thng sy:2.4m(XIII.6-359-STT2)Nhit dung
ring1.0060.9990.9981.0011.0040.5020.4850.4780.4730.4720.4720.430.4740.4760.4780.4810.4840.4860.4890.4920.4950.4980.5010.5040.5070.510.5140.5170.5210.5240.5270.530.5340.5370.540.5440.5470.5510.7960.971.0821.082-12.0480.0770.3170.3630.4510.472-0.3681.2660.510.510.5260.5260.5120.5250.5250.5250.5250.5250.5250.5250.5250.530.5260.5290.5270.5270.5270.5260.5280.5280.5240.5290.523ERROR:#DIV/0!-
Chiu di thng
sy:=8.0336133945m(73-TTTKTBMHC)FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFTFFFFFFF0.977650.995951.004151.004150.97890.518150.498650.492750.476950.4720.72190.12420.45810.45810.448150.448150.46010.447150.447150.447150.447150.447150.447150.447150.447150.42620.448150.42520.449150.449150.449150.42220.450150.450150.42020.451150.4192ERROR:#DIV/0!Chn14m(Nu
thng c lt gch bn trong th chn sao cho tho mn iu kin #
)FFFFTFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0.997810.998830.995510.995512.424660.567110.518810.507150.479830.4720.84286-0.002520.452340.452340.439510.439510.454340.438510.438510.438510.438510.438510.438510.438510.438510.414680.439510.413680.440510.440510.440510.410680.441510.441510.408680.442510.40768ERROR:#DIV/0!Kim
tra li:=5.8333333333 = [3,5-7] --> ng knh thng quay chn l hp
lFTFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFDo nhit ca khi l vo TBS cao
nn trnh cho khi tip xc trc tip vi thng th ta lt mt lp gch bn trong
thng vi b dy:Bng I.179 - 204 - STT1230mm =0.23mNhit
050100150200280[0;400][0;800][0;1000][0;1400]Nhit ni suy:600Nhit
dung
ring1.00481.00481.0091.01741.02581.04251.02281.03871.04671.0626Nhit
dung:1.0387ng knh trong ca lp
lt:1.94m1.00481.0511.0931.0931.1093ERROR:#DIV/0!ng knh ngoi ca lp
lt bng ng knh trong ca thng:2.4mFFFFFFTh tch ca lp lt:21.940436Dy
11.251.522.5345681012162025Modun:18.3412032468Quy
chun:20FFFFFFFFFFFTFF- Tit din thng sy: =2.954426mDy
21.1251.3751.752.252.753.54.55.57911141822Modun:18.3412032468Quy
chun:22- Th tch thc ca thng sy: =41.361964(Tho mn iu kin ln hn th
tch thng tnh theo cng bc hi m)(#)FFFFFFFFFFFFTF- Chn chiu dy thng
sy:S = (0,007 --> 0,011)
=0.0168---------->0.0264m(10.15-83-TKMHC)12345681012141618202225283032364045505560B
dy:19.7Quy chun:20Chn S =0.0196mFFFFFFFFFFFFTFFFFFFFFFFF cho TBS
hot ng khong 20 nm, ta b sung thm h s b sung do n mn, mi mn, dung
sai: c = c1 + c2 + c3(XIII.17-363-STT2)c1: H s b sung do n mn, chn
c1 =0mm(C lt gch bn trong th chn c1 v c2 = 0)c2: H s b sung do mi
mn, chn c2 =0mmc3: H s b sung do dung sai, chn c3 =0.1mm--->c =
0.1mm=0.0001mmVy chiu dy thng quay S = 0.0196+0.0001=0.0197mQuy
chun: S =0.02m=20mmII. Tnh thi gian sy(pht)VII.53-123-STT2)- H s in
y vt liu, theo VII.5-123-STT2, chn =0.17- Khi lng ring xp ca VLS,
=1380(I.1-8-STT1) , - m tng i ca VLS vo, ra TBS.%A - Cng bc hi
m.55.3276300578(pht)III. Tnh s vng quay ca thng sy Chn s vng quay
ca thng sy:n =1 (vng/pht)Mt khc ta c:(VII.52-122-STT2)n =
(vng/pht)m: H s ph thuc vo cu to cnh o trn. Chn cnh o trn l cnh nng
thm = 0.5(VII.4-122-STT2)k: H s ph thuc vo chiu chuyn ng ca TNS v
VLS. Sy xui chiu, chnk = 0.7(VII.4-122-STT2) : Chiu di cnh o trn
bng chiu di thng sy.(m) : Thi gian lu ca vt liu trong thng.(pht) :
ng knh trong ca thng sy.(m) : Gc nghing ca thng quay. = 0,5 -
6(171-GTMHC)Chn = 2--> =58.4953625261(pht)Thi gian lu ln hn thi
gian sy ---> Thi gian sy l hp l.IV. Tnh ton qu trnh chy ca nhin
liu1. Cc cng thc tnh ton* p sut hi bo ho:exp(12 -
)(bar)(2.31-31-TTTKHTS)t: nhit ca hi bo hoC* Hm m ca khng kh:x =
0,622(kg m/kg kkk)(7.3-273-QTTB4)P: p sut chung ca hn hp kh. TBS lm
vic p sut kh quyn nnP = Pa =0.981(bar) : m tng i ca khng kh : p sut
hi bo ho(bar) = (bar)* Nhit lng ring:I = 1000t + (2493 + 1,97t). 10
.x(J/kg kkk)(7.5-273-QTTB4)t: nhit ca hi bo hoCx: hm m ca khng khx
= t = C* Th tch ring:V = (7.7-275-QTTB4)R: Hng s kh. Vi khng kh, R
= 287 (J/kg C)T: nhit khng kh, T = t + 273 (K)P, : p sut chung v p
sut hi bo ho (Pa)V = vi P, o bng bar2. Cc thng s ca khng kh ngoi
triChn v tr t TBS H Ni. Theo VII.1-97-STT2 ta c:- Nhit khng kh
trung bnh nm:t =23.4 C- m trung bnh nm: = 83%- p sut hi bo
ho:0.0286664506(bar)- Hm m:0.0154609652- Nhit lng
ring:62656.9059005037(J/kg kkk)- Th tch ring:0.88869819893. Qu trnh
chy ca nhin liuS dng nhin liu to khi l l than , c thnh phn nh bng
3.1Bng 3.1. Thnh phn lm vic ca than .Nguyn tCHONSTrA%
KL76.41.51.30.81.713.35- Nhit tr cao ca nhin liu:[339C* + 1256H* -
109(O* - S*)]. 10(J/kg)C*, H*, O*, S* : Thnh phn C, H, O, S ch lm
vic ca than(%KL)27827200(J/kg)=27827.2(kJ/kg)- Nhit tr thp ca nhin
liu:[339C* + 1256H* - 109(O* - S*) - 25,1. ]. 10(J/kg)C*, H*, O*,
S* : Thnh phn C, H, O, S ch lm vic ca thanKhi lng nc to thnh khi t
nhin liu.(kg)9H* + A*H*, A* : Thnh phn H, m trong than nhin liu ch
lm vic(%KL)-->[339C* + 1256H* - 109(O* - S*)]. 1025100(9H* + A*)
=25100(9H* + A*)(J/kg)27362850(J/kg)=27362.85(kJ/kg)- Lng khng kh
kh cn thit cho qu trnh chy:0,115C* + 0,346H* + 0,043(S* - O*)(kg
kkk/kg nl)9.3222(kg kkk/kg nl)Trong thc t, lng khng kh kh cn thit t
chy ht nhin liu phi ln hn lng khng kh kh l thuyt.- Lng khng kh kh
thc t cho qu trnh chy:L = (3.14-56-TTTKHTS): h s d khng kh ca bung
t. (1,2 - 1,3)Chn 1.3L = 12.11886(kg kkk/kg nl)Khi l sau khi ra khi
bung t c nhit ln hn so vi yu cu nn cn phi c qu trnh ho trn khi l vi
khng kh ngoi tri t c nhit cn thit trc khi a vo TBS.- H s d khng kh:
= (3.15-57-TTTKHTS): Nhit tr cao ca nhin liu.(J/kg): Hiu sut ca
bung t.Chn 0.7: Nhit dung ca nhin liu.(J/kg C)1300(J/kg C): Nhit ca
nhin liu trc khi vo TBS, ly bng nhit khng kh ngoi triC H*, A* :
Thnh phn H, m trong than nhin liu ch lm vic(phn KL) ,: Nhit hm ca
hi nc trong khi l sau bung t v ca khng kh ngoi tri.(J/kg)(2493 +
1,97 ). 10(J/kg) : nhit ca hi nc sau khi ra khi bung t, ly bng nhit
khi l trc khi vo TBS.600 C3675000(J/kg)(2493 + 1,97 ). 10(J/kg):
Nhit ca khng kh ngoi tri.C2539098(J/kg): Nhit dung ca khi kh, ly
bng nhit dung ca khng kh kh nhit 1038.7(J/kg C)(Nhit dung t ng ni
suy theo nhit . Nu mun vn c th sa) = 3.3098675537* Cc thng s ca khi
l sau bung t:- Lng hi nc:(9H* + A*) + (kg m/kg
nl)(3.20-58-TTTKHTS)0.3723692731(kg m/kg nl)- Khi lng khi kh:( + 1)
- (Tr* + 9H* + A*)(kg khi kh/kg nl)(3.23-59-TTTKHTS)12.80086(kg khi
kh/kg nl)- Hm m ca khi l:(kg m/kg khi kh)0.029089395(kg m/kg khi
kh)- Nhit hm ca khi l:(J/kg khi
kh)(3.31-60-TTTKHTS)1583392.85568637(J/kg khi kh)- Nhit ca khi l ra
khi bung t:( C)1428.9835102676( C)- p sut hi bo ho:exp(12 -
)(bar)14486.5996601552(bar)- m tng i:0.3025496233x10- Th tch
ring:5.2121688255* Cc thng s ca khi l sau bung ho trn:- Lng hi
nc:(9H* + A*) + (kg m/kg nl)(3.20-58-TTTKHTS)0.6620519059(kg m/kg
nl)- Khi lng khi kh:( + 1) - (Tr* + 9H* + A*)(kg khi kh/kg
nl)(3.23-59-TTTKHTS)31.5372473089(kg khi kh/kg nl)- Hm m ca khi
l:(kg m/kg khi kh)0.0209926979(kg m/kg khi kh)- Nhit hm ca khi
l:(J/kg khi kh)(3.31-60-TTTKHTS)679918.38720465(J/kg khi kh)- Nhit
ca khi l ra khi bung ho trn:( C)602.6602078291( C)Sai s gia nhit ca
khi l tnh c vi nhit ca khi l chn trc:t% =0.441410897%----> Sai s
< 5%. Nhit ca khi l trc khi vo TBS l hp l- p sut hi bo ho:exp(12
- )(bar)1334.2455282545(bar)- m tng i:0.2400465491x10- Th tch
ring:2.6482815831V. Tnh ton qu trnh sy l thuyt Khi l va lm nhim v
cung cp nhit lng, va thi m ra mi trng. Qu trnh sy l thuyt l qu trnh
sy khng c bt k tn tht nhit no.(Tham kho thm ti 3.4.1-167-TTTKHTS)-
Nhit hm ca khi l:679918.38720465(J/kg khi kh)- Nhit ca khi l ra khi
TBS:81( C)- p sut hi bo ho:exp(12 - )(bar)0.4859224862(bar)- Nhit
dung ring dn xut ca khi l trc qu trnh sy:(7.10-130-TTTKHTS): Nhit
dung ring ca khng kh kh1.0387 kJ/kg C(Nhit dung t ng ni suy theo
nhit . Nu mun vn c th sa): Nhit dung ring ca hi nc trc khi vo
TBS2.2064436 kJ/kg C(Nhit dung t ng ni suy theo nhit . Nu mun vn c
th sa): Hm m ca khi l trc khi vo TBS0.0209926979(kg m/kg khi
kh)1.085019204(kJ/kg khi kh)- Hm m ca khi l:(kg m/kg khi
kh)(7.94-159-TTTKHTS) ,: Nhit ca khi l vo, ra TBS: Nhit hm ca hi nc
sau khi ra khi thng sy(kJ/kg)(2493 + 1,97 ).
10(J/kg)(273-QTTB4)2652570(J/kg)=2652.57(kJ/kg)0.2332868002(kg m/kg
khi kh)- m tng i:0.5506560403- Th tch ring:1.4240903259- Lng khi kh
tiu tn ring cho 1kg m bc hi:(kg khi kh/kg
m.h)(7.30-290-QTTB4)4.7104464481(kg khi kh/kg m.h)- Lng khi kh vo
TBS:(kg/h)8555.2980361638(kg/h)- Nhit lng tiu tn
ring:(7.40-293-QTTB4)2907577.15218686(J/kg m)=2907.5771521869(kJ/kg
m)- Nhit lng cn cung cp cho qu trnh sy l
thuyt:5280855938.80093(J/h)=5280855.93880093(kJ/h)- Lu lng th tch
ring ca khi l khi vo TBS: Vi600( C) v 0.2400465491x10ni suy ta
c:2.520067213(PL5-349-TTTKHTS)(Lu lng th tch ring t ng ni suy theo
nhit v m. Nu mun vn c th sa)- Lu lng th tch ring ca khi l khi ra
TBS: Vi81( C) v 0.5506560403ni suy ta
c:1.3881232383(PL5-349-TTTKHTS)(Lu lng th tch ring t ng ni suy theo
nhit v m. Nu mun vn c th sa)- Lu lng th tch ca khi l khi vo
TBS:21559.9260786683- Lu lng th tch ca khi l khi ra
TBS:11875.8080142924- Lu lng th tch trung bnh ca khi l trong thng
sy: =16717.8670464804=4.6438519574- Thit din t do ca thng sy:(1 -
)2.45217358- Tc trung bnh ca khi l trong thng sy:: Lu lng th tch
trung bnh ca khi l trong TBS: Thit din t do ca thng
sy1.8937696724VI. Tnh ton qu trnh sy thc1. Tnh cc tn tht nhit.TBS
thng quay khng s dng nhit b sung v khng c thit b vn chuyn nn:- Nhit
b sung:- Nhit do thit b vn chuyn mang ra, vo:Trong qu trnh sy thc
t, ngoi tn tht nhit do khi l mang ra khi thng sy cn c tn tht nhit
do VLS mang ra ( ) v tn tht nhit ra mi trng ( ).* Tn tht nhit do
VLS mang ra ngoi.- Nhit dung ring ca VLS ra khi thng sy:J/kg
C(7.40-141-TTTKHTS): Nhit dung ring ca vt liu
kh(I.144-162-STT1)920J/kg C: m tng i ca VLS ra khi TBS: Nhit dung
ring ca m ra khi TBS nhit 81 C4098.45852 J/kg
C(I.147-165-SST1)(Nhit dung t ng ni suy theo nhit . Nu mun vn c th
sa)1078.922926 J/kg C- Tn tht nhit do VLS mang ra:kJ/h(292-QTTB4):
Khi lng VLS vo TBSkg/h: Nhit dung ring ca VLS ra khi thng sy J/kg C
,: Nhit VLS trc v sau khi vo, ra khi thng quay. C23.4 C(ly bng nhit
khng kh ngoi tri)75 C(ly thp hn nhit khi l ra khi TBS t 5 - 10 C )
463936858.18J/h- Tn tht nhit ring do VLS mang ra:J/kg
m255438.176033224J/kg m=255.4381760332kJ/kg m* Tn tht nhit ra mi
trng Hng dn s dng chng trnh PasCal tnh nhanh tn tht nhit ra mi
trng:Chy PasCal v chn chng trnh 5 hoc 6. in kt qu ca tc khi l, b dy
bo n v chnh lch nhit ca khi l vi mt trong thng sy vo cc gi s trong
Excel.Kim tra li cc iu kin (cc dng ch ) trn Excel xem c tho mn hay
khng. Tt c u tho mn l c. Nu khng cn xem li cc s liu trn.Cc chng
trnh 2 v 3 dng kim tra li cc kt qu va tm c.Trong qu trnh sy thc t
th tc ca khi l i vo TBS ln hn qu trnh sy l thuyt.- Gi s tc ca khi l
i trong thng sy l:2m/s- ng knh trong ca lp lt:1.94m- B dy lp
lt:0.23m- ng knh trong ca thng sy:2.4m- V thng sy lm bng thp 25,
dy:0.02m- Chn vt liu bo n l bng thu tinh, gi s b dy ca lp bo n
l:0.12m- Chn lp v bc ngoi cng thng sy lm bng tn, dy:0.001m, h s dn
nhit 50W/m C- ng knh ngoi ca thng sy:m 2.682m =1.3824742268 <
2--> Qu trnh truyn nhit ra mi trng c th coi l truyn nhit qua tng
phng.- Nhit trung bnh ca khi l i trong TBS: =340.5 C- Nhit trung
bnh ca khng kh bn ngoi TBS:23.4 CKhi TBS lm vic th tai mt thi gian
nht nh, mt trong ca thng sy tip xc vi khi l nhiu hnnn ta b qua qu
trnh truyn nhit qua VLS n mt trong thng sy.- H s cp nhit t TNS n mt
trong ca thng:6,15 + 4,17W/m C(7.46-144-TTTKHTS)14.49W/m C- Nhit mt
trong cng ca thng sy: C- Gi s chnh lch nhit gia khi l v mt trong
cng ca thng sy l:4.34 C336.16 C- Mt dng nhit trao i i lu trong thng
sy:62.8866W/m (59-QTTB3)Mt khc:(59-QTTB3): H s dn nhit ca lp lt
nhit lm vic0.085W/m C(32-TTTKCTTBHCDK): B dy ca lp lt.(m): Nhit mt
trong cng ca thng sy C: Nhit mt tip xc ca v thng vi lp lt C
=165.9962588235 C- Mt dng nhit truyn qua lp lt:62.8866W/m Mt khc::
H s dn nhit ca v thng nhit lm vic.50W/m C: B dy ca lp lt(m): Nhit
mt tip xc ca v thng vi lp lt C: Nhit mt tip xc ca lp bo n vi v thng
C =165.9711041835 C- Mt dng nhit truyn qua v thng:62.8866W/m Mt
khc:: H s dn nhit ca lp bo n nhit lm vic.0.065W/m C: B dy ca lp bo
n(m): Nhit mt tip xc ca lp bo n vi v thng C: Nhit mt tip xc ca lp
bo n vi v bo v C =49.8727657219 CLp v bo v c chiu dy mng v h s dn
nhit ln nn c th b qua qu trnh truyn nhit qua n.Do vy:49.8727657219
C- Chnh lch nhit gia mt ngoi v bo v vi khng kh bn ngoi
TBS:26.4727657219 C- Nhit trung bnh ca khng kh gn mt ngoi ca thng
sy:36.636382861 C* Tnh chun s Grashof:Gr = (V.39-13-STT2) g: Gia tc
trng trng, g = 9,81 m/s l: Kch thc hnh hc c trngl = 2.4(m) : H s
gin n th tch = 3.2295946321x10 : Chnh lch nhit gia mt ngoi v bo v
vi khng kh bn ngoi TBS C: nht ng hc ca khng kh nhit 36.636382861
CNi suy t bng I. 255 - 318 - STT1 : =16.6370927547x10m /s( nht t ng
ni suy theo nhit . Nu mun v c th thay i.)Gr = 4.1888536529x10* Tnh
chun s Nusselt:Nu = 0,47Gr =212.6285878263(4.57-206-QTTB1)Mt khc:Nu
= : H s cp nhit t mt ngoi v bo v ra mi trngW/m Cl: Kch thc hnh hc c
trngl = 2.4(m) : H s dn nhit ca khng kh nhit 36.636382861W/m CNi
suy t bng I. 255 - 318 - STT1 :2.7297274457x10W/m C(H s dn nhit t
ng ni suy theo nhit . Nu mun v c th thay i.) =2.4184087164W/m C-
Dng nhit truyn t mt ngoi v bo v ra mi trng:64.0219673696W/m - Sai s
gia dng nhit truyn n mt trong thng sy v dng nhit truyn t mt ngoi v
bo v ra mi trng:q% =: Gi tr ln hn gia v: Gi tr nh hn gia vq%
=1.773402812 Sai s chp nhn c. - m bo an ton th nhit mt ngoi v bo v
phi xp x hoc nh hn:50 C49.8727657219 C ----> Nhit t yu cu v an
ton- Dng nhit truyn qua cc lp v TBS:q =63.4542836848W/m - B mt trao
i nhit:F = (220-TTTKHTS): ng knh trung bnh ca TBS(m)=2.311(m): Chiu
di thng sy(m)F = 109.97649197 m- Nhit tn tht ra mi trng:3,6 q
F(kJ/h)(220-TTTKHTS)25122.5262724486(kJ/h)- Tn tht nhit ring ra mi
trng:13.8321674065(kJ/kg m)* Tng nhit tn tht:q =
269.2703434397(kJ/kg m)* Lng nhit b sung thc t: = q(7.38-292QTTB4):
Nhit b sung: Nhit ca VLS trc khi vo TBS, ly bng nhit khng kh ngoi
tri23.4 C: Nhit dung ring ca hi nc sau khi ra khi TBS4.09845852
kJ/kg C(Nhit dung t ng ni suy theo nhit . Nu mun v c th thay i.)
=-173.3664140717(kJ/kg m)2. Cc thng s ca khi l sau qu trnh sy thc:
xc nh cc thng s ca khi l sau qu trnh sy thc ta c th tnh bng th I -
x hoc dng cng thc gii tch tnh. y ta s s dng phng php gii tch tnhton
cc thng s ca khi l.- Hm m ca khi l sau qu trnh sy thc:(kg m/kg khi
kh)(7.94-159-TTTKHTS) ,: Nhit ca khi l vo, ra TBS: Nhit hm ca hi nc
sau khi ra khi thng sy(kJ/kg)(2493 + 1,97t).
10(J/kg)(273-QTTB4)2652570(J/kg)=2652.57(kJ/kg)0.2202629165(kg m/kg
khi kh)- Nhit hm ca khi l:(kJ/kg khi kh)(7.33-138-TTTKHTS): Nhit
dung ring ca khng kh kh1.0387 kJ/kg C(Nhit dung t ng ni suy theo
nhit . Nu mun v c th thay i.) : Nhit ca khi l ra TBS: Hm m ca khi l
sau qu trnh sy thc(kg m/kg khi kh): Nhit hm ca hi nc sau khi ra khi
thng sy(kJ/kg)668.3975043496(kJ/kg khi kh)- m tng i ca khi l sau qu
trnh sy thc:(bar): p sut hi bo ho ca khi l khi ra khi
TBS0.4859224862(bar): Hm m ca khi l sau qu trnh sy thc(kg m/kg khi
kh)0.5279535522- Lng khi l tiu tn
ring:(7.35-139-TTTKHTS)5.0183113525(kg khi kh/kg m)- Lng khi l tiu
tn:9114.4543795758(kg khi kh/h)- Lu lng th tch ring ca khi l khi vo
TBS: Vi600( C) v 0.2400465491x10ni suy ta
c:2.520067213(PL5-349-TTTKHTS)(Lu lng th tch ring t ng ni suy theo
nhit v m. Nu mun vn c th sa)- Lu lng th tch ring ca khi l khi ra
TBS: Vi81( C) v 0.5279535522ni suy ta
c:1.3665558746(PL5-349-TTTKHTS)(Lu lng th tch ring t ng ni suy theo
nhit v m. Nu mun vn c th sa)- Lu lng th tch ca khi l khi vo
TBS:22969.0376466608- Lu lng th tch ca khi l khi ra
TBS:12455.4111762582- Lu lng th tch trung bnh ca khi l trong thng
sy: =17712.2244114595=4.9200623365- Tc trung bnh ca khi l trong
thng sy:: Lu lng th tch trung bnh ca khi l trong TBS: Thit din t do
ca thng sy2.0064086721- Sai lch gia tc khi l tnh c so vi tc khi l
gi s ban u:0.3194101099 Sai s chp nhn c - Nhit lng tiu hao ring
trong thng sy:3.15-21-HDTKTBS)3213.1613359506(kJ/kg m)- Nhit lng
tiu tn trong thng sy:5835869.94777348kJ/h- Nhit lng hu ch lm bc hi
1 kg m:(2493 + 1,97 ). 10(J/kg m)(160-TTTKHTS)Ca : Nhit dung ring
ca hi nc ngoi tri, Ca =4.181901444 kJ/kg C(Nhit dung t ng ni suy
theo nhit . Nu mun v c th thay i.)2635430.65039704(J/kg m)- Nhit
dung ring dn xut ca khng kh ngoi tri:(7.10-130-TTTKHTS): Nhit dung
ring ca khng kh kh1.0387 kJ/kg C(Nhit dung t ng ni suy theo nhit .
Nu mun v c th thay i.): Nhit dung ring ca hi nc ngoi tri4.181901444
kJ/kg C(Nhit dung t ng ni suy theo nhit . Nu mun v c th thay i.):
Hm m ca khng kh ngoi tri0.0154609652(kg m/kg khi
kh)1.1033562328(kJ/kg khi kh)- Tn tht nhit do TNS mang i:(kJ/kg
m)(160-TTTKHTS)318.9303422839(kJ/kg m)- Tng nhit tn tht v nhit hu
ch:3223.6313361207(kJ/kg m)Trn l thuyt th nhit lng tiu hao phi bng
tng nhit tn tht v nhit hu ch. y do tnh ton lm trn s liu m kt qu ny
c s sai khc.- Sai s gia nhit lng tiu hao vi tng nhit tn tht v nhit
hu ch:0.3247890059% Kt qu tnh ton qu trnh sy thc l hp l.- Hiu sut
ca TBS: =82.0198668803%- Hiu sut ca HTS:57.4139068162%VII. Tnh ton
lng nhin liu tiu hao - Lng nhin liu tiu tn:B = (kg nhin
liu/h)(3.16-21-HDTKTBS): Nhit lng tiu tn trong TBS(kJ/h): Nhit tr
cao ca nhin liu(kJ/kg nhin liu): Hiu sut bung tB =299.5974107437(kg
nhin liu/h)VIII. Tnh tr lc v chn qut - Chn ng knh ht t st:d =3mm
=0.003m- nht ca khi l nhit lm vic trung bnh:Vi 340.5 CNi suy t bng
I. 255 - 318 - STT1 : =54.1053x10m /s- Chun s Reynolds: : Khi lng
ring ca khi l nhit lm vic trung bnh. =1.29kg/m w: Tc khi l trong qu
trnh sy thc. w = 2.0064086721m/sRe = 143.5127715991- H s thu
ng:(10.20 - 213 - TTTKHST)a = 17.611797523- Khi lng ring dn xut ca
khi VLS trong thng:(10.23 - 213 - TTTKHST)12.660963976kg/m- H s tr
lc:(10.22 - 213 - TTTKHST): Khi lng ring xp ca VLS.1380kg/m
=0.9908253884- H s c trng cho cht ca lp ht:(10.21 - 213 -
TTTKHST)0.009345304- Tr lc ca dng khi i qua lp VLS:(10.19 - 213 -
TTTKHST) g : Gia tc trng trng g =9.81m/s203.2981370427mm H Op = mm
H O: Tr lc ca thng sy,203.2981370427mm H O: Tr lc ca Cyclon, theo
kinh nghim, chn 20mm H O: Tr lc ca bung t, theo kinh nghim, chn 3mm
H O: Tr lc cc b v tr lc trn ng ng, ly thm 5% tng 3 tr lc trn.p =
237.6130438948mm H O- Tng tr lc quy v iu kin tiu chun:p (257 - KTS)
p: Tr lc ca HTSmm H O t2: Nhit khi l ra khi TBS81( C) P: p sut khng
kh ni t qut P =0.981(bar) =735.80886mm Hg: Khi lng ring ca khng kh
nhit ra ca khi l.1,293 (273,2/( t2 + 273)) (3.89 - 15 -
STT1)0.4859224862(bar) =364.4710200284mm Hg0.7850771311: Khi lng
ring ca khng kh iu kin tiu chun.1.185210.8402140906mm H
O=2068.3425002283 Vi chiu cao ct p2068.3425002283v lu lng trung bnh
ca dng kh17712.2244114595ta chn c qutN 8(263 - KTS)- S vng quay: =
138Rad/s- Hiu sut: = 76%- Tc vng ca bnh gung:58.7m/sB. TNH TON C KH
I. Tnh ton cng sut ng c truyn chuyn ng cho thng sy- Cng sut cn thit
quay thng: N =0,13. 10 . (kW)(VII.54 - 123 - STT2): ng knh trong ca
thng sy(m): Chiu di thng sy(m) a: H s ph thuc vo dng cnh o trnVi
cnh nng, h s in y vt liu =0.17(VII.5 - 123 - STT2)chn a =0.058 n: S
vng quay ca thng sy(vng/pht) : Khi lng ring xp ca vt liu(kg/m )N =
20.137807872 (kW)Thc t, cng sut lm quay thng ln hn khi tnh ton do
hiu sut ca cc b truyn, do vy ta ly d cng sut thm 20%N' =
24.5681256038 (kW)Theo P1.3 - 238 - TTTKHTCK, chn ng c 4A225M8Y3.-
Cng sut ng c:30kW- Tc quay:735vng/pht- Hiu sut:90%II. La chn hp gim
tc v b truyn ng ngoi 1. Tnh ton, la chn hp gim tc- T s truyn ng
chung ca h thng: i = =735T s truyn ng ln, chn hp gim tc bnh rng tr
3 cp vi t s truyn100- T s truyn t u ra hp gim tc sang bnh rng
vng:7.35- Hiu sut ca cc b truyn:(2.3 - 19 - TTTKHTDDCK)B truyn bnh
rng tr kn:0.96(C 3 cp bnh rng tr kn)B truyn bnh rng tr h:0.93(C 1
cp bnh rng tr h)Mt cp ln:0.99(C 4 cp ln)Hiu sut b
truyn:0.7903827005 Hiu sut hp gim tc:0.8498738715- Cng sut trn trc
ng c:25.4785534391 (kW) ---> ng c chn lm quay thng l hp l.- S
vng quay trn cc trc:Trc ng c:735vng/phtu ra hp gim
tc:=7.35vng/phtTrn thng quay:=1vng/pht- Cng sut trn cc trc: Trc ng
c:29.7kWu ra hp gim tc:25.2412539836kWTrn thng
quay:23.4743662048kW- Momen xon trn cc trc:Trc ng c:9,55 .
10=385897.959183673N.mmu ra hp gim tc:9,55 .
10=32796459.2576674N.mmTrn thng quay:9,55 .
10=224180197.255786N.mm2. Tnh b truyn ng ngoiB truyn ny c chc nng
truyn ng t tang dn ng n bnh rng ln gn vo thng. y l s truyn ng gia 2
trc song song, tc quay chm, do ta chn b truyn bnh rng tr rng thng,
n khp ngoi, truyn ng h.- Cc thng s c hc ca bnh rng ln:(6.1 - 92 -
TTTKHTDDCK)Vt liu: Thp 40X ti ci thin. rn :HB = 240Gii hn bn
ko:600Gii hn bn chy340 trnh dnh b mt lm vic ca rng, ly rn ca bnh
rng nh ln hn bnh rng ln 10-15HB, chn mc thp bnh nh khc bnh ln.- Cc
thng s c hc ca bnh rng nh:(6.1 - 92 - TTTKHTDDK)Vt liu: Thp 45X ti
ci thin. rn :HB = 250Gii hn bn ko:750Gii hn bn chy450* Xc nh ng sut
tip xc cho php:Thi gian hot ng ca thit b chn :20nmMi nm thit b hot
ng:300ngyMi ngy hot ng:15gi- Tng thi gian lm vic:t =90000gi- S ln n
khp ca rng trong mi vng quay:C =1(Do ch c 2 bnh rng n khp vi nhau)-
S chu k chu ti tng ng ca bnh ln:60. C . (10.68 - 176 -
CTM)5.4x10Bnh ln bng thp c HB =240. Theo cng thc Tr.175 - CTM, ta
tm c s chu k c s ca bnh ln:30. HB = 15.4749136675x10- H s tui th ca
bnh ln:=1.1918064894(Nu th ly )- S chu k chu ti tng ng ca bnh nh ln
hn ca bnh ln mt gi tr bng t s truyn:39.69x10Bnh nh bng thp c HB
=250. Theo cng thc Tr.175 - CTM, ta tm c s chu k c s ca bnh nh:30.
HB =17.0677894034x10Do nn1(Nu th tnh nh ca bnh ln)- Gii hn bn mi
tip xc ng vi chu k chu ti:(10.66 - 175 - CTM)Bnh ln:: Gii hn bn mi
tip xc. Theo bng 10.7 - 175 - CTM ta c:2HB + 70
=550MPa655.4935691707MPaBnh nh:: Gii hn bn mi tip xc. Theo bng 10.7
- 175 - CTM ta c:2HB + 70 =570MPa570MPa- ng sut tip xc cho php ca
mi bnh rng:(10.65 - 174 - CTM): H s an ton, ly bng1.1: Cc h s khc,
Ly tch ca chng bng1Bnh ln:595.9032447006MPaBnh
nh:518.1818181818MPang sut tip xc cho php tnh b truyn bnh rng:Min(
, )518.1818181818MPa* Xc nh ng sut un cho php:- S chu k chu ti tng
ng ca bnh ln:60. C . (10.68 - 176 - CTM)5.4x10Bnh ln bng thp c HB
=240. Theo cng thc Tr.175 - CTM, ta tm c s chu k c s ca bnh ln:30.
HB =15.4749136675x10- H s tui th ca bnh ln:=1.1918064894(Nu th ly
)- S chu k chu ti tng ng ca bnh nh ln hn ca bnh ln mt gi tr bng t s
truyn:39.69x10Bnh nh bng thp c HB =250. Theo bng 10.8 - 175 - CTM,
ta tm c s chu k c s ca bnh nh:30. HB =17.0677894034x10Do nn1(Nu th
tnh nh ca bnh ln)- Gii hn bn mi un ng vi chu k chu ti:(10.74 - 178
- CTM)Bnh ln:: Gii hn bn mi un. Theo bng 10.6 - 174 - CTM ta
c:1,8HB=432MPa: H s gim gii hn bn mi un. B truyn quay mt chiu
th1514.8604034213MPaBnh nh:: Gii hn bn mi un. Theo bng 10.6 - 174 -
CTM ta c:1,8HB=450MPa450MPa- ng sut un cho php ca mi bnh rng:(10.73
- 177 - CTM): H s an ton, ly bng1.75: Cc h s khc, Ly tch ca chng
bng1Bnh ln:294.2059448122MPaBnh nh:257.1428571429MPang sut un cho
php tnh b truyn bnh rng:Min( , )257.1428571429MPa* Tnh s b ng knh
vnh ln bnh nh:(10.27 - 155 - CTM): Momen xon trn bnh dn nh.(N.mm):
H s chiu rng vnh rng. : H s chiu rng bnh rng. Bnh rng t khng i xng,
chn 0.251.04375: H s tp trung ti trng.Da vo h s chiu rng vnh rng v
bng 6.7 - 98 - TTTKHTCK, ta tm c:1.055: H s ti trng ng. Chn s b
1.3436.6274992557mm* Tnh s b khong cch trc:50.((10.28 - 156 - CTM):
Momen xon trn bnh dn ln.(N/mm)1834.1203246765mm- Modun:m = (0,01
--> 0,02) 18.3412032468 -->36.6824064935mmChn v quy chun
modun:m = 20mm(Modul t ng quy chun. Nu mun c th thay i.)* Tnh s rng
ca mi bnh:- S rng ca bnh nh: =21.8313749628Ly 22- S rng ca bnh
ln:161.7Ly 162 trnh hin tng ct chn rng th s rng ca mi bnh phi tho
mn iu kin sau:(124 - NLM) x: H s dch dao. Vi bnh rng khng dch chnh
th x = 0 Z: S rng. : Gc n khp Theo tiu chn TCVN 1065-71 l 20
----> Vy c hai bnh tho mn iu kin trnh ct chn rng.* Tnh cc kch
thc ca bnh rng:- ng knh vng chia:(B truyn khng dch chnh)Bnh rng nh:
440mmBnh rng ln:3240mm ---> ng knh vng chia ca bnh rng ln tho mn
iu kin ln hn ng knh thng sy.- Khong cch trc:=1840mm- Chiu rng bnh
rng ln:459.25mmChn460mm- Chiu rng bnh rng nh:464
---->468mmChn468mm* Kim tra bn tip xc ca bnh rng:- H s trng khp
ngang:(10.6 - 141 - CTM)Vi rng tr thng th = 0.1.7147923681- H s xt
n tng chiu di tip xc:(10.22 - 155 - CTM)0.8727748148- Vn tc vng ca
bnh rng:v = .0.169246m/sTheo bng 10.1 - 142 - CTM, Vn tc vng nh hn
2 m/s th chn cp chnh xc bng 9Da vo th 10.11 - 145 - CTM ta tm c h s
phn b khng u ti trng:1.06- H s ti trng ng:1 + (10.12 - 148 - CTM):
Cng ti trng ng.(10.14 - 148 - CTM): H s xt n nh hng ca cc sai s n
khp.Theo bng 10.2 - 149 - CTM, chn 0.004: H s xt n nh hng ca sai
lch cc bc rng bnh dn v bnh b dn.Theo bng 10.3 - 149 - CTM, chn 100:
Vn tc vng.m/s1.0711336094: H s phn b khng u ti trng.: H s tp trung
ti trng.H s 1.055 tm c trn.1.0029555538- bn tip xc ca bnh
rng:(10.25 - 155 - CTM): H s xt n c tnh ca vt liu. Vt liu bng thp
th275MPa: H s xt n hnh dng b mt tip xc.Vi gc n khp theo tiu chn
TCVN 1065-71 l 20 th 1.76396.8900856869MPa < ---> Tho mn iu
kin bn tip xc.* Kim tra bn un ca bnh rng:(10.35 - 159 - CTM)Bnh
nh:: H s dng rng.Vi h s dch chnh bng 0 v s rng Z1, da vo th 10.21 -
158 - CTM, ta tm c:4: H s tp trung ti trng.Da vo h s chiu rng vnh
rng v bng 6.7 - 98 - TTTKHTCK, ta tm c:1.12: H s ti trng ng.1 +
(10.13 - 148 - CTM): Cng ti trng ng.(10.14 - 148 - CTM): H s xt n
nh hng ca cc sai s n khp.Theo bng 10.2 - 149 - CTM, chn 0.011: H s
xt n nh hng ca sai lch cc bc rng bnh dn v bnh b dn.Theo bng 10.3 -
149 - CTM, chn 100: Vn tc vng.m/s2.9456174258: H s phn b khng u ti
trng.(10.11 - 146 - CTM)1: H s tp trung ti trng.H s 1.12 tm c
trn.1.008115436373.1820767828MPa < ---> Bnh rng nh tho mn iu
kin bn un.Bnh ln:: H s dng rng.Vi h s dch chnh bng 0 v s rng Z2, da
vo th 10.21 - 158 - CTM, ta tm c:3.665.8638691045MPa < --->
Bnh rng ln tho mn iu kin bn un. Cc thng s k thut ca bnh rng tnh c l
hp l.* Tnh cc kch thc khc ca bnh rng:- ng knh vng nh rng:Bnh
nh:480mmBnh ln:3280mm- ng knh vng chn rng:Bnh nh:390mmBnh ln:3190mm
---> ng knh vng chn rng ca bnh rng ln tho mn iu kin ln hn ng knh
thng sy.- Chiu cao u rng:20mm- Chiu cao rng:45mmIII. La chn chiu dy
thn thng sy Chiu dy thn thng sy c tnh trn. Ta s kim tra bn ca thn
thng sy phn sau.- B dy lp lt:0.23m =230mm- B dy v thng sy:0.02m
=20mm- B dy lp bo n:0.12m =120mm- B dy lp v bo v:0.001m =1mm- Tng b
dy thn thng:371mmIV. Xc nh v tr t vnh ln, bnh rng vng1. Tnh vnh
lnDo thng quay chm, ti trng ln v nhit lm vic cao nn ta lp vnh ln vo
thn thng qua chn . Gia chn vi thn thng sy c mt lp thp tng cng dy
20mmGia chn v mt trong vnh ln c cc tm thp mng hn ch va p.- Chn s b
ng knh trong vnh ln:(249 - CSTKMHC): ng knh ngoi ca v thng ( khng
tnh b dy bo n v v bo v)2.44m =2440mm2684 ---->2928mmChn 2700mm-
Chn s b b rng vng ngoi ca vnh ln:B = 380mm- B dy vnh ln:B/2,6
=146.1538461538mm(250 - CSTKMHC)Ly148mm- ng knh ngoi ca vnh
ln:2996mm --->ng knh ngoi vnh ln tho mn iu kin ln hn ng knh thng
quay.- Chn gc vt u vnh ln:02. Tnh con ln - B rng ca con ln :B + (30
- 50)(5.34 - 250 - CSTKMHC)410 ---->430mmChn 420mm- Ti trng ring
ca VLS nm trong thng:N/m(5.42 - 252 - CSTKMHC): Khi lng ring xp ca
VLS.1380 g: Gia tc trng trng.g = 9.81: Tit din trung bnh ca lp vt
liu.0.502252426799.392811476N/m- Ti trong ca lp lt:: Khi lng ring
ca gch lt.700150664.974012N- Ti trng ring ca thn thng:N/m(5.39 -
251 - CSTKMHC): ng knh trong ca thng sy.2.4m S: B dy thng ( khng
tnh lp bo n v lp v bo v) S = 0.02m: Khi lng ring ca vt liu lm v
thng.785011606.72112N/m- Ti trng ring ca lp bo n:N/m(5.41 - 252 -
CSTKMHC): B dy lp bo n.0.12m: ng knh trung bnh ca lp bo n.2.56m:
Khi lng ring ca vt liu lm lp bo n.2001892.560896N/m- Ti trng ring
ca v bc ngoi cng:N/m: B dy lp v bo v.0.001m: ng knh trong ca lp v
bo v.2.68m: Khi lng ring ca vt liu lm lp bo n.7850648.0419292N/m-
Ti trng ca bnh rng vng:Coi bnh rng vng c dng hnh vnh khn.Vt liu lm
bnh rng vng l thp CT5, khi lng ring7850(252 - CSTTMHC): ng knh ngoi
ca bnh rng, ly bng ng knh vng chia.3240mm =3.24m: ng knh trong ca
bnh rng, ly ln hn ng knh ngoi thng .2.475m121574.872403966N- Ti
trng ca mt vnh ln:Coi vnh ln c dng hnh vnh khn.Vt liu lm vnh ln l
thp CT5, khi lng ring785038730.5450834688N- Tng ti trng ca cnh
nng:(4a + 2b + 2c). a: Chiu di cnh nng(m)b: Chiu rng cnh nng(m)c:
Chiu rng ca phn gp.(m): Khi lng ring ca vt liu lm cnh nng.Chn vt
liu lm cnh nng l thp 25.7850: B dy cnh nng(m)z: S cnh nng.Chn chiu
di cnh nng:a = 1mChn chiu rng cnh nng:b = 0.4mGc gp ca cnh
nng:135Chiu rng ca phn gp:c = 0.1mB dy cnh nng ly bng na b dy
thng:10mm =0.01mS cnh nng trn mt n v chiu di thng: =14S cnh nng trn
mt ct ngang:12Tng s cnh nng:z =16865940N dn VLS vo thng sy th ta t
cnh xon pha u thng sy vi chiu di 0.8mDo s cnh nng trn mt n v chiu
di thng s cn li l 13- Ti trng ca mt chn v tm tng cng:Chn:4000NMi
vnh ln lp trn 12 chn . C hai vnh ln t i xng.- Tng ti trng ca thng:Q
= Q =804894.971176368N- Ti trng trn mt vnh ln:Q' = : Gc nghing ca
thng. = 2 Q' = 402692.546372473NChn gc gia hai con ln l: 2 =60- Phn
lc ca mi con ln ln vnh ln:T = =232459.033156576N(5.27 - 245 -
CSTKMHC)- ng knh con ln: =18.4491296156 --->13.8368472117cm(5.36
- 250 - CSTKMHC)Mt khc:(5.37 - 250 - CSTKMHC)---->74.9 <
q.(L2 2.L.l)/8 = - q.(L l)2/8.Gii phng trnh trn ta tm c quan h:vDo
l < L nn Vy khong cch gia hai vnh ln l: l = 8.2010101268mKhi lp
bnh rng vng vo thn thng, bnh rng vng va chu un, va chu xon. trnh
bnh rng vng b ph hu th ta phi hn ch cc momen ny.Do bnh rng vng phi
nhn cng sut nn lun lun phi chu un, v th ta s tm cch gim momen un
xung mc thp nht.Trn biu ni lc ta thy c 2 v tr m momen un bng 0. Hai
v tr ny thch hp t bnh rng vng.T biu ni lc, ta thy v tr m momen un
bng 0 nm gia hai gi . tm c hai v tr ny th cho MBC = - P. (z x) -
q.z2/2 + Yb.(z x) = 0Gii phng trnh trn ta tm c :v Vi x = (L - l)/2
= 2.8994949366mVy khong cch t v tr t bnh rng vng ti mp tri thng l:z
= 9.8994949366mvz = 4.1005050634mChn v tr t bnh rng vng sao cho bnh
rng cch xa l t trnh nhit cao lm gim tnh bn.Nu l t t bn tri th z
=9.8994949366mV. Kim tra bn thn thng sy - Momen xon sinh ra khi
thng quay:224180197.255786N.mm=224180.197255786N.m- Momen un ln
nht:(VI.34 - 170 - QT&MGCCH)239755.948861046N.m- Momen tnh ton
ca thng: (VI.36 - 171 - QT&MGCCH) M =328237.224969843N.m- Momen
chng un ca thng:(VI.37 - 171 - QT&MGCCH)S : B dy thng sy.S =
0.02mW = 0.090432- ng sut sinh ra trn thng: = M/W
=3629657.91942944N/=3.6296579194MN/- ng sut cho php tiu chun ca vt
liu lm thn thng nhit lm vic:(165.9962588235 C ) []* =140MN/(2.8 -
30 -TTTKCTTBHCDK)- ng sut cho php ca vt liu lm thn thng nhit lm
vic: [] = . []* : H s hiu chnh. Vi thng sy c v bc cch nhit th: =
0.95 [] =133MN/Ta thy: < []Vy b dy thng chn l bn.- vng ln nht
gia thng:(cm)(VI.39 - 171 - QT&MGCCH)Q: Tng ti trng ca
thng.(N)L: Chiu di thng sy(cm)E: ng sut cho php ca vt liu lm thng
sy.N/cm )J: Momen qun tnh.(cm )(cm )(VI.40 - 171 - QT&MGCCH):
ng knh ngoi ca v thng ( khng tnh b dy bo n v v bo v)(cm): ng knh
trong ca thng sy(cm)J = 11126162.96(cm )2.7207778239x 10cm < vng
nm trong gii hn cho php.VI. Tnh ton bn cho con ln chn, con ln , vnh
ln1. Tnh bn cho vnh ln.- Momen un cc i ca vnh ln: A . Q' .
R(N.cm)(5.102 - 281 - CSTTMHC) A: H s ph thuc vo tnh cht ca ti trng
v phng php lp vnh ai vi thng.Vnh ai lp t do trn cc chn , A = 0.07
Q': Ti trng tc dng ln vnh ln.(N) R: Bn knh trong ca vnh ln(cm) R =
1350mm =135cm3805444.56321987N.cm- Momen chng un ca vnh ln:: B dy
vnh ln.148mm =14.8cmW' = 8469.522- ng sut sinh ra trn vnh ln: =
M'/W' =449.310428997=4.49310429MN/- ng sut cho php ca vnh
ln:(XIII.1 - 355 - STT2): Gii hn bn ko ca vt liu lm vnh ln nhit lm
vic.500MN/(XII.4 - 309 - STT2): H s an ton theo gii hn bn.Theo bng
XIII.3 - 356 - STT2, chn:3.5 : H s hiu chnh. Theo bng XIII.2 - 356
- STT2, chn: = 0.9 [] =128.5714285714MN/Ta thy: < []Vy vnh ln
chn l bn.2. Tnh bn cho con ln - Ti trng trn mt n v chiu di ca con
ln :P = T/B = 61173.4297780464N/cm- p sut trn b mt tip xc vnh ln -
con ln (c hai cng lm bng thp CT5):(5.108 - 284 - CSTTMHC) P: Ti
trng trn mt n v chiu di con ln . (N/cm) E: Momen n hi ca vt liu lm
con ln .Theo tiu chun thit k thp TCVN 338 : 2005 th E = 2.1 r: Bn
knh trong ca con ln . r = 430mm =43cm R: Bn knh trong ca vnh ln. R
= 1350mm =135cm82961.4307986127- ng sut cho php ca vt liu lm con ln
:50000(285 - CSTTMHC)Kim tra iu kin: