Ivhavhavhavha inoyerera inoyerera coefficients (Cv, Kv uye C) yezvikamu zvakasiyana-siyana masisitimu ekudzora mavharuvhu pasi peyakagadzika musiyano wekumanikidza, huwandu hwemvura inotenderera muchikamu chenguva apo vharafu yekudzora yakazaruka, 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 iyo unit differential pressure, nhamba yemvura inoyerera inoyerera nepavharuvhu yekudzora muchikamu chenguva, uchishandisa imwe hurongwa hwemayuniti kana paine nzira dzakasiyana. yekutaura.
Tsanangudzo yekuyerera kweyekuyerera C
Zvichipa sitiroko, kutonhora kwe5-40 ℃ mvura, mutsauko wevhavha pakati pemigumo miviri ye1kgf / cm2, ivhu rekuyerera kuburikidza nevhavha paawa (inoratidzwa mu m3) .C ndiyo inoyerera coefficient ye common metric, nyika yedu munguva yakapfuura yakashandiswa kwenguva yakareba, yaimbozivikanwa seyekutenderera simba reC. Kuyerera kwekombiki C ndiyo inoyerera coefficient ye common metric.
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
Huwandu hwemvura patembiricha ye60 ° F inoyerera kuburikidza nevharuvhu inodzora paminiti (inoratidzwa muUS galoni US gal) kune yakapihwa sitiroko ine mutsauko wekumanikidza we1lb/in2 kumagumo evharuvhu.Cv ndiyo imambo inoyerera 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, yuniti yekushandisa uye hukama pakati pevatatu kuti vajekeswe, kubatsira vagadziri veinjiniya mukugadzirisa kusarudzwa kwevharuvhu uye kuverenga kwekutaura kwakasiyana kwekuyerera coefficients (C, Kv, Cv) ye kutendeuka uye kuenzanisa, kufambisa kusarudzwa kwekugadzirisa mavharuvhu pane kusarudzwa.
Iwo maCV kukosha kwemashavishavi mavharuvhu eTianjin Zhongfa Valve ndeaya anotevera, kana zvichidikanwa, ndapota tarisa kune.