Yintoni i-CV (flow coefficient) yeevalvu zeglobe

Yintoni i-flow coefficient yevalvu yeglobhu

I-flow coefficient (ixabiso le-Cv) yevalvu yeglobe idla ngokuba phakathi kwenani eliphakathi kweshumi elinesibini, kwaye ixabiso elithile liyahluka ngokuxhomekeke kububanzi obuqhelekileyo bevalvu, ulwakhiwo, uhlobo lwe-valve core, izinto zesihlalo sevalvu kunye nokuchaneka kokucubungula. Oku kulandelayo kuluhlu oluthile kwiimeko eziqhelekileyo:

1. Ngobubanzi obuqhelekileyo

Ivalvu yeglobhu encinci enobubanzi: Ixabiso le-Cv levalvu yeglobhu encinci enobubanzi obuphakathi kwe-1/2 Inch (DN15) kunye ne-2 Inch (DN50) ngokubanzi liphakathi kwe-2.5 kunye ne-20. Umzekelo, ixabiso le-Cv levalvu yeglobhu ye-1/2 Inch (DN15) linokuba malunga ne-2.5 ukuya kwi-4, ixabiso le-Cv levalvu yeglobhu ye-1 Inch (DN25) limalunga ne-6 ukuya kwi-10, kwaye ixabiso le-Cv levalvu yeglobhu ye-2 Inch (DN50) linokuba phakathi kwe-12 kunye ne-20.

Ivalvu yeglobhu enobubanzi obuphakathi: Kwiivalvu zeglobe ezinobubanzi obuphakathi ezinobubanzi obuyi-2-1/2 Inch (DN65) ukuya kwi-6 Inch (DN150), ixabiso le-Cv lidla ngokuba phakathi kwama-20 nama-60. Umzekelo, ixabiso le-Cv levalvu yeglobe ye-2-1/2 Inch (DN65) linokuba phakathi kwama-20 nama-30, ixabiso le-Cv levalvu yeglobe ye-4 Inch (DN100) linokuba phakathi kwama-35 nama-50, kwaye ixabiso le-Cv levalvu yeglobe ye-6 Inch (DN150) linokuba phakathi kwama-45 nama-60.

Ivalvu enkulu yeglobhu enobubanzi: Iivalvu ezinkulu zeglobe ezinobubanzi obuqhelekileyo obungaphezulu kwe-6 Inch (DN150) zinamaxabiso e-Cv amakhulu, ngokubanzi angaphezu kwama-60 ukuya kwi-100. Umzekelo, ixabiso le-Cv levalvu yeglobe ye-8 Inch (DN200) linokuba phakathi kwama-80 kunye ne-100, kwaye ixabiso le-Cv levalvu yeglobe ye-12 Inch (DN300) linokuba phakathi kwe-120 kunye ne-150 okanye ngaphezulu.

2. Ngokwemo yesakhiwo

Ivalvu yeglobe ethe ngqo: Ixabiso le-Cv liphezulu, ngokubanzi likwinqanaba eliphakathi phakathi kweevalvu zeglobe ezinobubanzi obufanayo. Umzekelo, ixabiso le-Cv levalvu yeglobe ethe tye ye-DN50 limalunga ne-10 ukuya kwi-15, kwaye ixabiso le-Cv levalvu yeglobe ethe tye ye-DN100 linokuba ngama-30 ukuya kuma-40.

Ivalvu yeglobhu ye-Angle: Ngenxa yokuba indlela yayo yokuhamba ijikajika kancinci kwaye ukumelana nolwelo kukhulu, ixabiso le-Cv liphantsi kancinci kunele-valve yeglobe ethe tye. Ixabiso le-Cv le-valve yeglobe ye-DN50 angle linokuba malunga ne-8 ukuya kwi-12, kwaye ixabiso le-Cv le-valve yeglobe ye-DN100 angle limalunga ne-25 ukuya kwi-35.

3. Ngohlobo lwe-valve core

Ivalvu yeglobhu ye-flat valve core: Ixabiso le-Cv liphezulu, umzekelo, ixabiso le-Cv le-DN100 flat valve core globe valve linokuba ngama-40 ukuya kuma-50.

Ivalvu yeglobhu ye-conical core core valve: Ngenxa yokunxibelelana okusondeleyo phakathi kwesiseko sevalvu kunye nesihlalo sevalvu, ukusebenza kokutywina kungcono, kodwa ukumelana nolwelo kukhulu, kwaye ixabiso leCv liphantsi. Ixabiso leCv levalvu yeglobhu yevalvu yeconical yeDN100 linokuba phakathi kwama-30 nama-40.

4. Ngokwezixhobo zesihlalo sevalvu kunye nokuchaneka kokucubungula

ivalvu yesihlalo sentsimbi yeglobhu yesihlalo: Isihlalo sevalvu yesinyithi sinobunzima obuphezulu kunye nokumelana nokuguguleka okuhle, kodwa iimfuno zokuchaneka kokucubungula ziphezulu. Ukuba ukuchaneka kokucubungula kuphezulu, ixabiso le-Cv linokufikelela kwinqanaba eliphezulu lohlobo olufanayo lwevalvu; ukuba ukuchaneka kokucubungula akwanelanga, umphezulu wokutywina usenokuba ungalingani kwaye ixabiso le-Cv liya kuncitshiswa. Umzekelo, ixabiso le-Cv levalvu ye-globe yesihlalo sevalvu yesinyithi ye-DN80 ene-processing echanekileyo kakhulu inokuba phakathi kwama-30 nama-35, kwaye ixabiso le-Cv lokuchaneka kokucubungula ngokubanzi linokuba phakathi kwama-25 nama-30.

ivalvu yesihlalo seglobhu yevalvu ethambileyoUkuba izinto ezithambileyo ezifana ne-polytetrafluoroethylene zisetyenziswa njengezihlalo zeevalvu, ukusebenza kokutywina kulungile, kodwa izinto ezithambileyo zinokutshintsha xa kushushu kakhulu okanye kuxinzelelo oluphezulu, nto leyo echaphazela i-flow coefficient. Ivalvu yeglobe ethambileyo ye-DN65 inokuba nexabiso le-Cv elimalunga nama-20 ukuya kuma-25.

Isishwankathelo

Ivalvu yeglobhu sisixhobo esibalulekileyo sokulawula ukuhamba kwamanzi. I-flow coefficient yayo yiparameter ebalulekileyo echaza amandla ayo okuhamba kwamanzi kwaye kufuneka ibalwe kwaye ikhethwe ngokufanelekileyo. Ukuqonda izinto ezichaphazela i-flow coefficient kunokunceda ukukhetha ivalvu yeglobhu efanelekileyo ukuqinisekisa ukusebenza okuqhelekileyo kwenkqubo.