GiI THIU TNG QUAN V VALVES

CC LOI VALVES PH BIN

Shut Down Valves

Blow Down Valves

Control Valves

and the many others etc.

Nhn chung, cc loi valves c chia lm 3 loi chnh : FC; FO v XV m ty vo yu cu, tnh nng v mc ch s dng.

SDV : Bo v an ton khi c s c

SOLENOID SIMPLE OR DOUBLE AND

INDICATOR

trng thi lm vic bnh thng, t trng trong cun coil ca Solenoid s tc ng mt lc vo u Ti nh, ht hoc y u ti cho php ngun kh nui i qua, nn l xo trong ca Actuator. Lm cho Valve m ra. Khi mt ngun th cun coid ca solenoid khng ht ti na, Solenoid khng cho kh qua, lm cho khng c kh cp vo u Actuator. L xo s gin ra v trng thi ban u, lm valve ng li. Note: C rt nhiu nguyn nhn lm l xo ng lai: Mt ngun solenoid, thiu kh ngun nui

INDICATOR OF SDV ( LIMIT SWITCH)

Nhim v quan trng ca Indicator l gi tn hiu trng thi digital ( Open- 12v or 24v, Close 0v) v CCR.

INDICATOR OF SDV ( LIMIT SWITCH)

Indicator c gn trc tip vo u trn cng ca TI Valve. Indicator gm 2 ci Cam, c gn lch nhau 90 c nh trn trc, v 2 tip im 1 ng 1 m.

REGULATOR OF SDV

Regulator l Thit b cn chnh p sut u ra theo yu cu.

Thng thng, p sut kh ngun nui h thng .K. vo khong 8-9 bar. Do , ty vo tnh nng hot ng Min-Max ca Valve m ta dng b Regulator iu Pressure tc ng vo Actuator cho ph hp.

Khi c p sut thp- PSLL thng h s h ra hoc p sut cao- PSHH thng ng s h ra...tn hiu a v PLC l 0 V, bo hiu c s lch p. PLC s ngt ngun Solenoid ca SDV, lm ng valve, ng thi cc Limit Switch- ZSH/L trn valve cng thay i trng thi ri a tn hiu 0 or 24 V v PLC.

Blow Down Valve

The single Solonoid of BDV

The Regulator of BDV

The Indicator of BDV

The T-effet of BDV

CONTROL VALVE

Hinh m phng tng trng ca Control Valve. Thc t, v mt c kh th Control Valve c cu to kh phc tp. y, di gc nhn ca E & I, Control Valve gm c

THE WHOLE CONTROL VALVE

IP Convertor

Regulator Positioner( Arm )

Actuator

IP CONVERTOR

B CHUYN I DNG IN SANG P SUT

Valve thng hot ng trng thi t 0% n100%. Dng cung cp t 4 ma n 20 ma. Vi tn hiu dng, b IP convertor s chuyn i tn hiu dng sang p sut m- ng valve theo yu cu.

REGULATOR OF CONTROL VALVE

B Regulator ca Control Valve hot ng tng t nh nhng b Regulator ca cc Valve khc.

Fail Open

Fail Close

THE ARM OF CV

y l C Cu Chp Hnh C Kh. Sau khi nhn c tn hiu p sut mong mun u ra ca b IP, c cu positioner ny s dch chuyn Ti Valve ln hoc xung theo t l % mong mun.

And some others valve : ball valve

Butterfly Valve

Check Valve

Gate Valve

Globe Valve

Needle Valve and etc