Igenzura rya valve igenzura (Cv, Kv na C) ya sisitemu zitandukanye zigizwe na valve igenzura munsi yumuvuduko utandukanye, ubwinshi bwamazi azenguruka mugice cyigihe iyo valve igenzura ifunguye neza, Cv, Kv na C harahari umubano hagati ya Cv = 1.156Kv, Cv = 1.167C.Iyi ngingo isangiye ibisobanuro, ubumwe, guhinduka hamwe nuburyo bukomoka kuri Cv, Kv na C.
1 、 Ibisobanuro bya coefficient
Ubushobozi bwo kugenzura ububiko bwamazi ni amazi yihariye mubushyuhe bwihariye, mugihe valve irangiye kubitandukanya bitandukanya, umubare wamazi yatembye anyura mumashanyarazi mugihe cyigihe, ukoresheje sisitemu itandukanye yibice mugihe hariho inzira zitandukanye. Bya imvugo.
Ibisobanuro bya coefficient C.
Urebye inkorora, ubushyuhe bwa 5-40 ℃ amazi, itandukaniro ryumuvuduko wa valve hagati yimpande zombi za 1kgf / cm2, ingano yimigezi inyura muri valve kumasaha (bigaragarira muri m3) .C ni coefficient de la metric rusange, igihugu cyacu kera cyakoreshejwe igihe kinini, cyahoze kizwi nkubushobozi bwo kuzenguruka kwa C. Coefficient C itemba C ni coefficente yimigezi ya metero rusange.
Ibisobanuro bya coefficient ya Kv
Urebye inkorora, itandukaniro ryumuvuduko hagati yimpande zombi za valve ni 102kPa, ubushyuhe bwamazi 5-40 ℃, ubwinshi bwamazi atembera mumashanyarazi (isaha muri m3).kv nuburyo mpuzamahanga bwibice bitwara coefficient.
Ibisobanuro bya coefficient ya Cv
Ingano y’amazi ku bushyuhe bwa 60 ° F inyura mu cyuma kigenzura ku munota (bigaragarira muri gallon yo muri Amerika gal) yo mu bwonko bwatanzwe hamwe n’umuvuduko utandukanye wa 1lb / in2 kuri buri mpera ya valve.Cv ni ubwami coefficient.
2 、 Inkomoko ya formulaire ya sisitemu zitandukanye
Ubushobozi bwo kuzenguruka C formula hamwe nibice
Γ 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 ：
Iyo γ / γ0 = 1, Q = 1m3 / h, △ P = 1kgf / cm2, niba C isobanuwe nka 1, hanyuma N = 1.Inzira hamwe nubushobozi bwo kuzenguruka C nuburyo bukurikira:
Muri formula C nubushobozi bwo kuzenguruka;Q igice ni m3 / h;γ / γ0 ni uburemere bwihariye;Unit P igice ni kgf / cm2.
② Flow coefficient Cv yo kubara hamwe nibice
Iyo ρ / ρ0 = 1, Q = 1USgal / min, ∆P = 1lb / in2, kandi niba Cv = 1 isobanuwe, noneho N = 1.Inzira hamwe nibice bya coefficient Cv nibi bikurikira:
aho Cv ni coefficient de flux;Q iri muri USgal / min;ρ / ρ0 nubucucike bwihariye;na ∆P iri muri lb / in2.
③ Flow coefficient Kv yo kubara hamwe nibice
Iyo ρ / ρ0 = 1, Q = 1m3 / h, ΔP = 100kPa, niba Kv = 1, noneho N = 0.1.Inzira hamwe nibice bya coefficient Kv nibi bikurikira:
aho Kv ni coefficient de flux;Q iri muri m3 / h;ρ / ρ0 nubucucike bwihariye;ΔP iri muri kPa.
3 Guhindura ubushobozi bwo kuzenguruka C, coefficient ya Kv, coefficient Cv
① coefficient ya Cv nubushobozi bwo kuzenguruka C isano
aho bizwi ko Q iri muri USgal / min;ρ / ρ0 nubucucike bwihariye;na ∆P iri muri lb / in2.
Iyo C = 1, Q = 1m3 / h, γ / γ0 = 1 (ni ukuvuga, ρ / ρ0 = 1), na ∆P = 1kgf / cm2, gusimbuza formula ya Cv hamwe na C = 1 ni:
Duhereye ku mibare, tuzi ko C = 1 na Cv = 1.167 bihwanye (ni ukuvuga Cv = 1.167C).
Guhindura Cv na Kv
Iyo Kv = 1, Q = 1m3 / h, ρ / ρ0 = 1, △ P = 100kPa isimbuza Cv formula yo guhindura ibice:
Ni ukuvuga, Kv = 1 ihwanye na Cv = 1.156 (ni ukuvuga, Cv = 1.156Kv).
Bitewe namakuru amwe hamwe nicyitegererezo cyubugenzuzi bwa valve ubushobozi bwo gutembera C, coefficient ya Kv na sisitemu ya Cv eshatu kubura uburyo bwo gukuramo, gukoresha byoroshye kubyara urujijo.Ibikoresho bya Changhui C, Kv, Cv uhereye kubisobanuro, gushyira mubikorwa hamwe nubusabane hagati yabatatu bigomba gusobanurwa, kugirango bafashe abashushanya ubwubatsi mugikorwa cyo kugenzura ihitamo rya valve no kubara imvugo zitandukanye zerekana coefficient (C, Kv, Cv) kuri Guhindura no kugereranya, kugirango byorohereze guhitamo kugenga indangagaciro kuruta guhitamo.
Indangagaciro za CV zinyugunyugu za Tianjin Zhongfa Valve nizi zikurikira, nibiba ngombwa, reba.