Ko ngā tauwehenga rere o te takirere whakahaere (Cv, Kv me te C) o ngā pūnaha wae rerekē he takirere whakahaere i raro i te pēhanga rerekētanga pumau, ko te nui o te wai e rere ana i roto i te wae wā ina tuwhera katoa te takirere whakahaere, Cv, Kv me te C he whanaungatanga i waenga i te Cv = 1.156Kv, Cv = 1.167C. E tohaina ana e tēnei tuhinga te whakamāramatanga, te wae, te tahuritanga me te tukanga tango whānui o Cv, Kv me te C.
1、Whakamāramatanga o te tauwehenga rere
Ko te kaha rere o te takirere whakahaere he wai motuhake i te pāmahana motuhake, ina mutu te takirere mō te pēhanga rerekētanga wae, ko te maha o te rōrahi wai e rere ana i roto i te takirere whakahaere i roto i te wae o te wā, mā te whakamahi i tētahi pūnaha rerekē o ngā wae ina he rerekē ngā huarahi whakapuakitanga.
Te whakamāramatanga o te tauwehenga rere C
I runga i te whiu, ko te pāmahana o te wai he 5-40 ℃, ko te rerekētanga pēhanga takirere i waenga i ngā pito e rua he 1kgf/cm2, ko te rōrahi rere i roto i te takirere ia hāora (e whakaatuhia ana i roto i te m3). Ko C te tauwehenga rere o te inenga noa, kua roa te whakamahinga o tō tātou whenua i mua, i mua ko te kaha tohanga o te C. Ko te tauwehenga rere C te tauwehenga rere o te inenga noa.
② Te whakamāramatanga o te tauwehenga rere Kv
I runga i te whiu, ko te rerekētanga pēhanga i waenga i ngā pito e rua o te takirere he 102kPa, ko te pāmahana o te wai he 5-40 ℃, ko te rōrahi o te wai e rere ana i roto i te takirere whakahaere ia hāora (e whakaatuhia ana i roto i te m3). Ko te kv te pūnaha ā-ao o ngā waeine tauwehenga rere.
③ Te whakamāramatanga o te tauwehenga rere Cv
Ko te rōrahi wai i te pāmahana o te 60°F e rere ana i roto i tētahi takirere whakahaere ia meneti (e whakaatuhia ana i roto i ngā karani US (karani US) mō tētahi whiu kua hoatu me te pēhanga rerekētanga o te 1lb/in2 i ia pito o te takirere. Ko Cv te tauwehenga rere imperial.
2、Te whakaputa i ngā tātai mō ngā pūnaha wae rerekē
①Te tātai me ngā waeine mō te kaha tohanga C
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：
Ina γ/γ0=1, Q=1m3/h, △P=1kgf/cm2, ki te tautuhia a C hei 1, ko N=1. Ko te tātai me te waeine o te kaha tohanga C e whai ake nei:
I roto i te tātai, ko C te kaha tohanga; ko te waeine Q ko m3/h; ko γ/γ0 te taumaha motuhake; ko te waeine △P ko kgf/cm2.
② Te tātaitanga me te waeine o te tauwehenga rere Cv
Ina ρ/ρ0=1, Q=1USgal/min, ∆P=1lb/in2, ā, ki te tautuhia a Cv=1, ko N=1. Ko te tātai me ngā waeine o te tauwehenga rere Cv e whai ake nei:
ko Cv te tauwehenga rere; ko Q kei roto i te USgal/min; ko ρ/ρ0 te mātotoru motuhake; ā, ko ∆P kei roto i te lb/in2.
③ Te tātaitanga o te tauwehenga rere Kv me te waeine
Ina ρ/ρ0=1, Q=1m3/h, ΔP=100kPa, mena Kv=1, ko N=0.1. Ko te tātai me te waeine o te tauwehenga rere Kv e whai ake nei:
ko Kv te tauwehenga rere; ko Q kei roto i te m3/h; ko ρ/ρ0 te mātotoru motuhake; ko ΔP kei roto i te kPa.
3、Te tahuritanga o te kaha tohanga C, te tauwehenga rere Kv, te tauwehenga rere Cv
① te whanaungatanga o te tauwehenga rere Cv me te kaha tohanga C
e mōhiotia ana ko Q kei roto i te USgal/min; ko ρ/ρ0 te mātotoru motuhake; ā, ko ∆P kei roto i te lb/in2.
Ina ko C=1, Q=1m3/h, γ/γ0=1 (arā, ρ/ρ0=1), me ∆P=1kgf/cm2, ko te whakakapi i te tātai Cv ki te tikanga o C=1 ko:
Mai i ngā tātaitanga, e mōhio ana tātou he ōrite a C=1 me Cv=1.167 (arā, Cv=1.167C).
② Te hurihanga Cv me Kv
Ina Kv = 1, Q = 1m3 / h, ρ / ρ0 = 1, △ P = 100kPa mā te whakamahi i te tātai Cv hei whakakapi i te huringa waeine:
Arā, ko Kv = 1 he ōrite ki a Cv = 1.156 (arā, Cv = 1.156Kv).
Nā te korenga o ētahi mōhiohio me ngā tauira o te kaha rere o te takirere whakahaere C, te tauwehenga rere Kv me te pūnaha rere C3, he ngāwari te whakamahi i te whakapoauau. Me whakamārama te Changhui Instrumentation C, Kv, Cv mai i te whakamāramatanga, te tono waeine me te whanaungatanga i waenga i ngā mea e toru, hei āwhina i ngā kaihoahoa hangarau i roto i te tukanga whakahaere i te kōwhiringa takirere me te tatau i ngā whakaaturanga rerekē o ngā tauwehenga rere (C, Kv, Cv) hei hurihanga me te whakataurite, hei whakahaere i te kōwhiringa o ngā takirere whakahaere i te kōwhiringa.
Ko ngā uara CV o ngā takirere pūrerehua o Tianjin Zhongfa Valve e whai ake nei, mēnā e tika ana, tirohia.