Ivhavhavha yekudzivirira inoyerera coefficients (Cv, Kv uye C) yezvikamu zvakasiyana-siyana zvezvikwata zvigadziriswe mavharuvhu pasi pekugadzirisa kwakasiyana-siyana, kuwanda kwemvura inotenderera muchikamu chenguva apo valve yekudzora yakazaruka zvakakwana, Cv, Kv uye C pane hukama pakati peCv = 1.156Kv, Cv = 1.167C. Ichi chinyorwa chinogovera tsananguro, yuniti, shanduko uye inopedza kuburitsa maitiro eCv, Kv uye C.
1, Tsanangudzo yekuyerera kweyekuyerera
Kudzora vharuvhu kuyerera simba imvura chaiyo pane chaiyo tembiricha, kana vharafu inopera kune unit differential pressure, nhamba yemvura vhoriyamu inoyerera kuburikidza nekudzora vharafu muchikamu chenguva, uchishandisa imwe hurongwa hwemayuniti kana paine nzira dzakasiyana dzekutaura.
Tsanangudzo yekuyerera kweyekuyerera C
Zvichipa sitiroko, kutonhora kwe5-40 ℃ mvura, kusiyana kwevhavha yevhavha pakati pemigumo miviri ye1kgf / cm2, ivhu rekuyerera kuburikidza nevhavha paawa (inoratidzwa mum3) .C ndiyo inoyerera coefficient yemetric yakajairika, nyika yedu munguva yakapfuura yakashandiswa kwenguva yakareba, yaimbozivikanwa seyekutenderera simba reC. C. The flow coefficient of the flow coefficient.
② Tsanangudzo yekuyerera kweyekuyerera Kv
Zvichipa sitiroko, mutsauko wepakati pakati pemigumo miviri yevhavha ndeye 102kPa, kutonhora kwe5-40 ℃ mvura, huwandu hwemvura inoyerera kuburikidza nevhavhavha yekutonga neawa (inoratidzwa mu m3). kv ndiyo yepasi rose system yezvikamu zvinoyerera coefficient.
③ Tsanangudzo yekuyerera kweyekuyerera Cv
Kuwanda kwemvura pakushambidzika kwe60 ° F inoyerera kuburikidza nevhavha inogadzirisa paminiti (inoratidzwa muUS galoni US gal) nokuda kwesitiroko yakapiwa ine kusiyana kwakasiyana kwe1lb / in2 pamagumo evhavha.Cv ndiyo imperial flow coefficient.
2, Kutorwa kwemafomula emayuniti akasiyana masisitimu
①Kutenderera huwandu C formula uye mayunitsi
当γ/γ0=1，Q=1m3/h，△P=1kgf/cm2时，如C定义為1，则N=1。则流通能力C的公式及单位如下:
Kana γ/γ0=1, Q=1m3/h, △P=1kgf/cm2, kana C ichitsanangurwa se1, ipapo N=1. Iyo formula uye yuniti yekutenderera simba C ndeaya anotevera:
Mune formula C ndiko kugona kutenderera; Q unit iri m3/h; γ/γ0 ndiyo chaiyo giravhiti; △P unit ndeye kgf/cm2.
② Flow coefficient Cv calculation formula uye unit
Kana ρ/ρ0=1, Q=1USgal/min, ∆P=1lb/in2, uye kana Cv=1 ichitsanangurwa, ipapo N=1. Iyo formula uye mayunitsi eyekuyerera coefficient Cv ndeaya anotevera:
uko Cv ndiyo inoyerera coefficient; Q iri kuUSgal/min; ρ/ρ0 ndiyo chaiyo density; uye ∆P iri mu lb/in2.
③ Flow coefficient Kv calculation formula uye unit
Kana ρ/ρ0=1, Q=1m3/h, ΔP=100kPa, kana Kv=1, zvozoti N=0.1. Iyo formula uye yuniti yekuyerera coefficient Kv ndeaya anotevera:
uko Kv ndiyo inoyerera coefficient; Q iri mu m3/h; ρ/ρ0 ndiyo chaiyo density; ΔP iri mu kPa.
3, Shanduko yehuwandu hwekutenderera C, kuyerera kweyeyeye Kv, kuyerera koyefita Cv
① kuyerera coefficient Cv uye kutenderera kugona C hukama
uko kunozivikanwa kuti Q iri muUSgal/min; ρ/ρ0 ndiyo chaiyo density; uye ∆P iri mu lb/in2.
Kana C=1, Q=1m3/h, γ/γ0=1 (kureva, ρ/ρ0=1), uye ∆P=1kgf/cm2, kutsiva Cv formula nechimiro cheC=1 ndiko:
Kubva mukuverenga, tinoziva kuti C=1 uye Cv=1.167 akaenzana (kureva, Cv=1.167C).
② Cv uye Kv shanduko
Kana Kv = 1, Q = 1m3 / h, ρ / ρ0 = 1, △ P = 100kPa ichitsiva Cv formula yekushandurwa kweyuniti:
Kureva kuti, Kv = 1 yakaenzana neCv = 1.156 (kureva, Cv = 1.156Kv).
Nekuda kwerumwe ruzivo uye masampula evhavha yekudzora inoyerera simba C, kuyerera kweiyo Kv uye kuyerera system Cv matatu kushaikwa kwemaitiro ekutora, kushandiswa kweiyo nyore kugadzira kuvhiringidzika. Changhui Instrumentation C, Kv, Cv kubva mutsanangudzo, chikwata chekushanda uye hukama huri pakati pevatatu kuti vajekeswe, kubatsira vagadziri veinjiniya mukugadzirisa kusarudzwa kwevharuvhu uye kuverenga kwemashoko akasiyana-siyana ekuyerera kwe coefficients (C, Kv, Cv) yekushandura uye kuenzanisa, kufambisa kusarudzwa kwekugadzirisa mavharuvhu pane kusarudzwa.
Iwo maCV kukosha kwemashavishavi mavharuvhu eTianjin Zhongfa Valve ndeaya anotevera, kana zvichidikanwa, ndapota tarisa kune.