Li-valve flow flow coefficients (Cv, Kv le C) tsa litsamaiso tse fapaneng tsa yuniti ke li-valve tsa taolo tlas'a khatello e fapaneng e fapaneng, molumo oa metsi o potolohang ka nako e le 'ngoe ha valve ea taolo e bulehile ka botlalo, Cv, Kv le C ho na le. kamano pakeng tsa Cv = 1.156Kv, Cv = 1.167C. Sengoliloeng sena se arolelana tlhaloso, yuniti, phetoho le ts'ebetso e felletseng ea tlhahiso ea Cv, Kv le C.
1. Tlhaloso ea phallo coefficient
Taolo ea phallo ea valve ke mokelikeli o itseng ka mocheso o itseng, ha valve e qetella bakeng sa khatello ea phapang ea unit, palo ea mokelikeli o phallang ka valve ea taolo ka nako e le 'ngoe, o sebelisa tsamaiso e fapaneng ea lihlopha ha ho na le litsela tse sa tšoaneng. ea polelo.
Tlhaloso ea phallo coefficient C
Ka lebaka la stroke, mocheso oa metsi a 5-40 ℃, phapang ea khatello ea valve pakeng tsa lipheletsong tse peli tsa 1kgf / cm2, molumo oa ho phalla ka valve ka hora (e bontšitsoeng ka m3) .C ke phallo ea phallo ea metric e tloaelehileng, naha ea rona nakong e fetileng e 'nile ea sebelisoa ka nako e telele, eo pele e neng e tsejoa e le matla a ho potoloha ha C. The flow coefficient C ke phallo coefficient ea metric e tloaelehileng.
② Tlhaloso ea phallo coefficient Kv
Ho fanoe ka stroke, phapang ea khatello pakeng tsa lipheletsong tse peli tsa valve ke 102kPa, mocheso oa metsi a 5-40 ℃, metsi a phallang ka valve ea taolo ka hora (e hlalositsoeng ka m3). kv ke tsamaiso ea machaba ea li-unit flow coefficient.
③ Tlhaloso ea phallo coefficient Cv
Bophahamo ba metsi ka mocheso oa 60 ° F o phallang ka valve e laolang ka motsotso (e hlalositsoeng ka US gallons US gal) bakeng sa stroke e fanoeng ka khatello e fapaneng ea 1lb / in2 qetellong ea valve.Cv ke moemphera phallo coefficient.
2. Ho hlahisoa ha liforomo tsa litsamaiso tse fapaneng tsa yuniti
① Foromo ea C ea matla a potoloho le liyuniti
当γ/γ0=1，Q=1m3/h，△P=1kgf/cm2时，如C定义为1，则N=1。则流通能力C的公式及单位如下:
Ha γ/γ0=1, Q=1m3/h, △P=1kgf/cm2, haeba C e hlalosoa e le 1, ebe N=1. Foromo le yuniti ea matla a potoloho ea C ke tse latelang:
Ka foromo C ke matla a ho potoloha; Q unit ke m3/h; γ/γ0 ke matla a khoheli a khethehileng; △P yuniti ke kgf/cm2.
② Foromo ea lipalo tsa Cv ea phallo le yuniti
Ha ρ/ρ0=1, Q=1USgal/min, ∆P=1lb/in2, 'me haeba Cv=1 e hlalosoa, joale N=1. Foromo le diyuniti tsa phallo coefficient Cv ke tse latelang:
moo Cv e leng phallo coefficient; Q e USgal/min; ρ/ρ0 ke tekano e khethehileng; mme ∆P e ho lb/in2.
③ Foromo ea lipalo tsa kv ea phallo le yuniti
Ha ρ/ρ0=1, Q=1m3/h, ΔP=100kPa, haeba Kv=1, ebe N=0.1. Foromo le yuniti ea phallo coefficient Kv ke tse latelang:
moo Kv e leng phallo coefficient; Q e ho m3/h; ρ/ρ0 ke tekano e khethehileng; ΔP e ho kPa.
3, Phetoho ea matla a ho potoloha C, phallo coefficient Kv, phallo coefficient Cv
① Coefficient Cv le matla a ho potoloha C kamano
moo ho tsejoang hore Q e USgal/min; ρ/ρ0 ke tekano e khethehileng; mme ∆P e ho lb/in2.
Ha C=1, Q=1m3/h, γ/γ0=1 (ke hore, ρ/ρ0=1), le ∆P=1kgf/cm2, ho nkela sebaka sa Cv formula ka boemo ba C=1 ke:
Ho latela lipalo, rea tseba hore C=1 le Cv=1.167 lia lekana (ke hore, Cv=1.167C).
② Phetoho ea Cv le Kv
Ha Kv = 1, Q = 1m3 / h, ρ / ρ0 = 1, △ P = 100kPa e kenya Cv formula bakeng sa phetoho ea yuniti:
Ke hore, Kv = 1 e lekana le Cv = 1.156 (ke hore, Cv = 1.156Kv).
Ka lebaka la boitsebiso bo bong le mehlala ea matla a phallo ea li-valve C, phallo ea coefficient Kv le tsamaiso ea phallo Cv tse tharo ho hloka ts'ebetso ea ho tlosoa, ho sebelisoa ha bonolo ho hlahisa pherekano. Changhui Instrumentation C, Kv, Cv ho tloha tlhaloso, kopo ea lisebelisoa le kamano pakeng tsa tse tharo tse lokelang ho hlakisoa, ho thusa baqapi ba boenjiniere nakong ea ho laola khetho ea li-valve le ho baloa ha lipolelo tse fapaneng tsa phallo coefficients (C, Kv, Cv) bakeng sa ho fetola le ho bapisa, ho nolofatsa khetho ea li-valve tse laolang ho feta khetho.
Litekanyetso tsa CV tsa li-valve tsa serurubele tsa Tianjin Zhongfa Valve ke tse latelang, haeba ho hlokahala, ka kopo sheba ho.