Yintoni i-CV (i-flow coefficient) yeevalvu zeglowubhu

Yintoni i-flow coefficient yevalve yeglowubhu

I-coefficient yokuhamba (ixabiso le-Cv) yevalve yeglowubhu idla ngokuba phakathi kwezimbalwa kunye neshumi elinesibini, kwaye ixabiso elithile liyahluka ngokuxhomekeke kwidayamitha yegama levalve, ulwakhiwo, uhlobo olungundoqo lwevalve, isixhobo sokuhlala sevalve kunye nokuchaneka kokucubungula. Olu lulandelayo luqikelelo loluhlu kwiimeko eziqhelekileyo:

1. Ngedayamitha yegama

Ivalve yeglowubhu yedayamitha encinci: Ixabiso le-Cv ye-valve yeglobhu encinci ye-diameter ene-diameter ye-nominal phakathi kwe-1/2 Intshi (DN15) kunye ne-2 Intshi (DN50) ngokubanzi phakathi kwe-2.5 kunye ne-20. Ngokomzekelo, ixabiso le-Cv ye-1/2 Intshi (DN15) i-valve yeglobhu ingaba malunga ne-2.5 ukuya kwi-4, i-valve ye-D malunga ne-5 ye-5 ye-intshi ye-5 ye-intshi ye-Cv. I-6 ukuya kwi-10, kunye nexabiso le-Cv ye-2 Intshi (DN50) ivalve yeglowubhu ingaba phakathi kwe-12 kunye ne-20.

Ivalve yeglowubhu yedayimitha ephakathi: Kwi-valve yeglobhu ye-diameter ephakathi kunye ne-diameter ye-2-1 / 2 Intshi (DN65) ukuya kwi-6 Intshi (DN150), ixabiso le-Cv lihlala liphakathi kwe-20 kunye ne-60. ivelufa inokuba phakathi kwe-35 kunye ne-50, kwaye ixabiso le-Cv le-intshi ye-6 Intshi (DN150) ivalve yeglowubhu inokuba phakathi kwe-45 kunye ne-60.

Ivalve yeglobhu enedayamitha enkulu: Iivalvu zeglowubhu ezinobubanzi obukhulu obunobubanzi obubizwa ngokuba ngaphezu kwe-6 Intshi (DN150) zinexabiso elikhulu le-Cv, ngokubanzi ngaphezu kwe-60 ukuya kwi-100. kunye ne-150 okanye ngaphezulu.

2. Ngokwefomu yolwakhiwo

Ngokuthe ngqo kwivalve yeglowubhu: Ixabiso le-Cv liphezulu kakhulu, ngokubanzi kwinqanaba eliphakathi phakathi kweevalvu zeglobhu ezinobubanzi obufanayo. Ngokomzekelo, ixabiso le-Cv ye-DN50 i-valve ye-globe eqondileyo malunga ne-10 ukuya kwi-15, kunye nexabiso le-Cv ye-DN100 ye-valve yeglobhu ethe ngqo inokuba yi-30 ukuya kwi-40.

Ivalve yeglowubhu yeAngle: Ngenxa yokuba umzila wayo wokuhamba unobunzima kwaye ukuxhathisa ulwelo kukhulu, ixabiso leCv lingaphantsi kancinci kunelo levalve yeglowubhu ethe ngqo. Ixabiso le-Cv yevalve yeglowubhu ye-DN50 ye-engile ingaba malunga ne-8 ukuya kwi-12, kwaye ixabiso le-Cv levalve yeglowubhu ye-DN100 malunga ne-25 ukuya kwi-35.

3. Ngohlobo olungundoqo lwevalvu

Ivalve yevalve engundoqo yeglowubhu: Ixabiso le-Cv liphezulu kakhulu, umzekelo, ixabiso le-Cv ye-DN100 ye-valve engundoqo ye-globe valve ingaba yi-40 ukuya kwi-50.

Ivalve engundoqo yeglowubhu: Ngenxa yoqhagamshelwano olusondeleyo phakathi kwesiseko se-valve kunye nesihlalo se-valve, ukusebenza kokutywinwa kungcono, kodwa ukuxhatshazwa kwamanzi kukhulu, kwaye ixabiso le-Cv liphantsi. Ixabiso le-Cv yevalve engundoqo yeglowubhu ye-DN100 inokuba phakathi kwama-30 nama-40.

4. Ngokwesixhobo sesihlalo sevalve kunye nokuchaneka kokucubungula

Ivalve yentsimbi yesitulo seglowubhu ivelufa: Isihlalo sevalve yentsimbi sinobulukhuni obuphezulu kunye nokumelana nokunxiba kakuhle, kodwa iimfuno zokuchaneka kokucubungula ziphezulu. Ukuba ukuchaneka kokucubungula kuphezulu, ixabiso leCv linokufikelela kwinqanaba eliphezulu lohlobo olufanayo lwevalve; ukuba ukuchaneka kokucubungula akwanelanga, indawo yokutywina ingalingani kwaye ixabiso leCv liya kuncitshiswa. Ngokomzekelo, ixabiso le-Cv ye-DN80 ye-valve ye-valve yesitulo seglobhu ye-valve ene-high-precision processing ingaba phakathi kwe-30 kunye ne-35, kwaye ixabiso le-Cv lokuchaneka ngokubanzi lingaba phakathi kwe-25 kunye ne-30.

Ivalve yesitulo seglowubhu ethambileyo: Ukuba izinto ezithambileyo ezifana ne-polytetrafluoroethylene zisetyenziselwa izihlalo zevalve, ukusebenza kokutywinwa kulungile, kodwa izinto ezithambileyo zinokukhubazeka phantsi kobushushu obuphezulu okanye uxinzelelo oluphezulu, oluchaphazela ukuhamba kwe-coefficient. Ivalve yeglowubhu ehleliyo ethambileyo ye-DN65 inokuba nexabiso le-Cv elimalunga nama-20 ukuya kuma-25.

Isishwankathelo

Ivalve yeglowubhu sisixhobo esibalulekileyo sokulawula ukuhamba. I-coefficient yayo yokuhamba yiparameter ebalulekileyo echaza umthamo wayo kwaye idinga ukubalwa ngokufanelekileyo kwaye ikhethwe. Ukuqonda izinto ezichaphazela i-coefficient yokuhamba kunokunceda ukukhetha i-valve yeglobhu efanelekileyo ukuqinisekisa ukusebenza okuqhelekileyo kwenkqubo.