1 Amaphuzu abalulekile okukhetha ama-valve

1.1 Cacisa injongo yevalvu emshinini noma kudivayisi

Nquma izimo zokusebenza zevalvu: uhlobo lwendlela ephakathi nendawo esebenzayo, ingcindezi yokusebenza, izinga lokushisa lokusebenza kanye nezindlela zokulawula ukusebenza, njll.;

1.2 Ukukhetha okulungile kohlobo lwevalvu

Imfuneko yokukhetha uhlobo lwevalvu ngendlela efanele ukuthi umklami aqonde ngokugcwele yonke inqubo yokukhiqiza kanye nezimo zokusebenza. Lapho abaklami bekhetha izinhlobo zevalvu, kufanele baqale baqonde izici zesakhiwo kanye nokusebenza kwevalvu ngayinye;

1.3 Nquma indlela yokuqeda ivalvu

Phakathi kokuxhumeka okunezintambo, ukuxhumeka kwe-flange, kanye nokuxhumeka kokuphela okuhlanganisiwe, okubili kokuqala yikona okusetshenziswa kakhulu.Amavalvu anentamboikakhulukazi ama-valve anobubanzi obujwayelekile obungaphansi kwama-50mm. Uma ububanzi bukhulu kakhulu, kuzoba nzima kakhulu ukuwafaka nokuvala uxhumano. Ama-valve okuxhuma i-Flange kulula ukuwafaka nokuwahlukanisa, kodwa makhulu futhi ayabiza kakhulu kunama-valve anezintambo, ngakho-ke afaneleka ekuxhumeni kwamapayipi anobubanzi obuhlukahlukene bepayipi kanye nokucindezela. Ukuxhumeka okuhlanganisiwe kufanelekile ezimweni zomthwalo osindayo futhi kuthembeke kakhulu kunokuxhumeka kwe-flange. Kodwa-ke, kunzima ukuwahlukanisa nokufaka kabusha ama-valve ahlanganisiwe, ngakho-ke ukusetshenziswa kwawo kunqunyelwe ezimweni lapho ngokuvamile angasebenza khona ngokuthembekile isikhathi eside, noma lapho izimo zokusebenza zinzima futhi izinga lokushisa liphezulu;

1.4 Ukukhethwa kwezinto zevalvu

Uma ukhetha izinto zokwakha i-valve housing, izingxenye zangaphakathi kanye nezindawo zokuvala, ngaphezu kokucabangela izakhiwo zomzimba (izinga lokushisa, ingcindezi) kanye nezakhiwo zamakhemikhali (ukubola) kwendawo yokusebenza, ukuhlanzeka kwendawo yokusebenza (ukuba khona noma ukungabikho kwezinhlayiya eziqinile) kufanele kucatshangelwe. Ngaphezu kwalokho, kufanele futhi ubheke imithetho efanele yezwe kanye nomnyango wabasebenzisi. Ukukhetha okufanele nokunengqondo kwezinto ze-valve kungaqinisekisa impilo yesevisi engabizi kakhulu kanye nokusebenza okuhle kakhulu kwe-valve. Uchungechunge lokukhetha izinto zomzimba we-valve luyi: insimbi ephonswe ngensimbi-ikhabhoni-insimbi engagqwali, kanti uchungechunge lokukhetha izinto zendandatho yokuvala luyi: insimbi yerabha-yethusi-i-alloy-F4;

1.5 Abanye

Ngaphezu kwalokho, izinga lokugeleza kanye nezinga lokucindezela koketshezi olugeleza nge-valve kufanele kunqunywe bese kukhethwa i-valve efanele kusetshenziswa ulwazi olutholakalayo (njengekhathalogi yomkhiqizo we-valve, amasampula omkhiqizo we-valve, njll.).

2 Isingeniso kuma-valve asetshenziswa njalo

Kunezinhlobo eziningi zamavalvu, okuhlanganisa amavalvu esango, amavalvu embulunga, amavalvu e-throttle, amavalvu e-butterfly, amavalvu e-plug, amavalvu ebhola, amavalvu kagesi, amavalvu e-diaphragm, amavalvu okuhlola, amavalvu okuphepha, amavalvu okunciphisa ingcindezi, izicupho kanye namavalvu okuvala okuphuthumayo, phakathi kwawo avame ukusetshenziswa. Kukhona amavalvu esango, amavalvu embulunga, amavalvu e-throttle, amavalvu e-plug, amavalvu e-butterfly, amavalvu ebhola, amavalvu okuhlola, amavalvu e-diaphragm, njll.

2.1I-valve yesango

I-valve yesango ibhekisela ku-valve enomzimba wayo wokuvula nokuvala (ipuleti le-valve) eqhutshwa yisiqu se-valve futhi ihamba phezulu naphansi eduze kobuso bokuvala besihlalo se-valve ukuze ixhume noma inqume isiteshi soketshezi. Uma kuqhathaniswa nama-valve okumisa, ama-valve esango asebenza kangcono ekuvaleni, ukumelana noketshezi okuncane, umzamo omncane wokuvula nokuvala, futhi asebenza kahle ngokulungiswa okuthile. Angenye yama-valve okumisa asetshenziswa kakhulu. Okubi ukuthi inkulu ngobukhulu futhi iyinkimbinkimbi ngesakhiwo kune-valve yokumisa. Indawo yokuvala kulula ukuyigqoka futhi kunzima ukuyinakekela, ngakho-ke ngokuvamile ayifaneleki ukugoba. Ngokwesikhundla sentambo esiqwini se-valve se-valve yesango, ihlukaniswe ngezigaba ezimbili: uhlobo lwesiqu esivulekile nohlobo lwesiqu esifihliwe. Ngokwezici zesakhiwo sesango, ingahlukaniswa ngezinhlobo ezimbili: uhlobo lwe-wedge nohlobo oluhambisanayo.

2.2I-valve yokumisa

I-valve yomhlaba iyi-valve evala phansi. Izingxenye zokuvula nokuvala (ama-valve disc) ziqhutshwa yisiqu se-valve ukuze zihambe phezulu naphansi eduze kwe-axis yesihlalo se-valve (indawo yokuvala). Uma kuqhathaniswa nama-valve esango, asebenza kahle ekulawuleni, ukusebenza kabi kokuvala, isakhiwo esilula, ukukhiqizwa nokugcinwa okulula, ukumelana okukhulu koketshezi, kanye nentengo eshibhile. Iyi-valve yokumisa esetshenziswa kakhulu, evame ukusetshenziswa kumapayipi anobubanzi obuphakathi nobuncane.

2.3 I-valve yebhola

Ingxenye yokuvula nokuvala yevalvu yebhola iyibhola elinembobo eyindilinga. Ibhola lijikeleza ngesiqu sevalvu ukuze livule futhi livale ivalvu. Ivalvu yebhola inesakhiwo esilula, ukuvulwa nokuvalwa okusheshayo, ukusebenza okulula, usayizi omncane, isisindo esincane, izingxenye ezimbalwa, ukumelana noketshezi okuncane, ukuvalwa okuhle kanye nokugcinwa okulula.