Invalve a niengineering, control-a Cv value (Flow Coefficient) tih a nivalve a nitih hian pipe medium chu unit time khata valve kaltlangin volume flow rate emaw mass flow rate emaw a kawk a, test condition hnuaia pipe chu pressure awm reng chunga dah a nih chuan a sawina a ni. Chu chu valve-a flow capacity a ni.
Flow coefficient value a san chuan fluid a luang chhuak a, pressure loss a hniam zawk thinvalve a ni.
Valve Cv value chu test leh calculation hmanga hriat tur a ni.
A CVhlutnachu technical parameter pawimawh tak a ni a, chu chuan control valve pakhatin condition bik hnuaia flow capacity a tehna a ni. CV value hian valve ngei pawh a hnathawh dan a tarlang mai bakah fluid control system design leh operational efficiency nen pawh a inzawm tlat a ni.
Definition hi a tlangpuiin a hnuaia standard condition te hi a ni: thevalve a nia inhawng kim a, a tawp lamah pressure danglamna chu 1 lb/in2 (or 7KPa) a ni a, fluid chu tui thianghlim 60°F (15.6°C) a ni a, chutih lai chuan minute khata valve kal tlanga fluid (US gallon-a chhut) volume chu valve Cv value a ni. Hriat tur chu China ramah hian flow coefficient hi metric system-ah tarlan a ni fo a, symbol Kv hmanga siam a ni a, Cv value nena inzawmna chu Cv=1.156Kv a ni.
Valve pakhat caliber chu Cv value hmanga hriat dan
1. CV value duh zawng chu chhut rawh:
Fluid control system-a thil mamawh bik, flow, differential pressure, medium leh condition dangte angin Cv value mamawh chu a inmil formula emaw software emaw hmangin chhut a ni. He step hian fluid physical property (eg, viscosity, density), hnathawh dan (eg, temperature, pressure), leh valve awmna hmun te a ngaihtuah a ni.
2. Valve diameter dik tak thlang rawh:
Cv value duh zawng chhut chhuah leh valve-a Cv value rated angin valve diameter dik tak thlan a ni. Valve thlan chhuah rated Cv value chu Cv value mamawh nen a inang emaw, a aia tam emaw a ni tur a ni a, chu chuan valve hian flow demand tak tak a phuhruk theih nan a ni. Chutih rual chuan, valve performance zawng zawng hian system mamawh a tlin theih nan thil dang, material, structure, sealing performance, leh operation mode te ngaihtuah a ngai bawk.
3. Verification leh Adjustment: 1.1.
A tir lama thlan a nih hnuahvalve a nicaliber, a tul anga verification leh adjustment neih a ngai a ni. Hei hian simulation calculation emaw real-world testing emaw hmanga valve flow performance hian system mamawh a phuhruk em tih finfiah a huam a ni. Deviation lian tak hmuh a nih chuan Cv value chu chhut nawn leh emaw, valve diameter siamrem emaw a ngai mai thei.
Khaihtawi
Building tui supply system-ah chuan control valve-in CV value mamawh a tlin loh chuan tui pump chu a start leh stop fo thei a, a nih loh leh load sang takah a kal reng thei bawk. Hei hi electrical energy hmanralna mai ni lovin, pressure inthlak danglam fo avangin pipe connection loose a awm thei a, leak a awm thei a, hun rei tak chhunga overload vangin pump pawh a tichhia thei bawk.
A tawi zawngin, control valve Cv value hi a flow capacity tehna atana indicator pawimawh tak a ni. Cv value dik taka chhut a, chuta innghat valve caliber dik tak hriat chian chuan fluid control system stability leh efficiency a awm theih nan a pui thei a ni. Chuvangin, valve thlan, system design leh operation optimization kalpui danah hian Cv value chhiar leh hman dan hi ngaihven kim a ngai a ni.
Tianjin Tanggu Tui-Seal Valve Co.,ltda bik takin resilient seated an siam chhuakbutterfly valve a ni, gate valve a ni, Y-strainer hmanga siam a ni, balancing valve, check valve, balancing valve, back flow venna etc. te a ni.
Post hun chhung: Dec-16-2024
