Ngaba iiValve zeBhola zingasetyenziselwa iSteam: Isikhokelo sokukhetha iiValve zePipeline

Isikhokelo sokukhetha iValve yePipeline yomphunga: Iimfuno zeValve yeBhola kunye neeNdidi eziqhelekileyo

Iinkqubo zomphunga zoshishino zifuna ukukhethwa kweevalvu ezichanekileyo ukuze kukhuseleke kwaye kusebenze kakuhle.Iivalvu zebholasebenza kwimibhobho yomphunga kuphela xa uhlangabezana neemeko ezingqongqo: ukumelana nobushushu obuphezulu/uxinzelelo, ukutywinwa okuqinileyo, kunye noyilo oluthile lomphunga (umz., iivalvu zebhola ezivaliweyo ezigcweleyo). Nantsi inkcazelo yobuchwephesha:

1. Iimfuno ezibalulekileyo zeeValve zeBhalvu zoMphunga

◼ Imigangatho yezinto zokwakha kunye nolwakhiwo

• Izixhobo ezisebenzisa ubushushu obuphezulu: Imizimba yevalvu ifuna i-ASTM A216 WCB cast steel okanye elinganayo.
• Uyilo lwe-Full-Bore: Luqinisekisa ukuhamba kwamanzi okungenamida; udidi loxinzelelo kufuneka luhambelane nemibhobho (umz., udidi lwe-150 = 2.0MPa).

◼ Ukusebenza kokutywina

• IiSeal Eziqinileyo Kuphela: Iiseal ezithambileyo ziyasilela xa kushushu ngomphunga (>150°C).
• Ukujikeleza Okuzinzileyo: Uyilo lwebhola oludadayo/oluzinzileyo kufuneka lunciphise ukuguguleka.

◼ Iindlela ezilungileyo zokusebenza

• Ukufakwa kweStem ethe nkqo: Ivumela ukutshintshwa ngokukhawuleza kwe-90° kunye nokuthintela ukuvuza.

◼ Amanyathelo okhuseleko abalulekileyo

• Ukusetyenziswa: Ilungele ukucima/ukulungisa umphunga ngokukhawuleza kwi-oyile, iikhemikhali kunye nezityalo zamandla.
• Imida Yokuhamba Komoya: Isantya >40m/s sibangela ukukhukuliseka komoya – khetha iimodeli ezisekelwe kumazinga okuhamba komoya kwimibhobho.
• Ulondolozo: Hlola izitywini rhoqo ngekota, susa iidiphozithi zangaphakathi, kwaye ulandele izikhokelo ze-OEM.

2. Iivalvu zePipeline zeSteam ezi-3 eziphezulu zithelekiswa

3. Iimfuneko zeValve yoMphunga yeUniversal

Zonke iivalvu zomphunga kufuneka zibe nezi zinto zilandelayo:

1. Ukumelana nobushushu obuphezulu: Ukusebenza okuqhubekayo >150°C.
2. Ukukhusela Ukugqwala: Sebenzisa intsimbi engagqwaliyo engama-316L ukuze ukhusele umphunga ogqwala.
3. Izitywino zeZero-Leakage: Zithintela ukulahleka kwamandla kunye neengozi zokhuseleko.

4. Imigangatho yokuthobela imithetho kunye nokukhethwa

• Iikhowudi zamazwe ngamazwe: Landela i-API 600, i-ASME B16.34, i-DIN/EN ukuze kuyilo/kuvavanywe.
• Iikhrayitheriya zokukhetha: Thelekisa iinkcukacha zevalvu noxinzelelo lombhobho, ubushushu, isantya sokuhamba kwamanzi, kunye nemidiya.
• Ukufakelwa: Namathela kwi-ANSI B31.1 ukuze kukhuseleke inkqubo yomphunga.

Isishwankathelo:

Iivalvu zebhola ezigqunywe ngeglobe, isango, kunye nezihambelanayo zezona zikhetho ziphambili kwiipayipi zomphunga. Beka phambili iivalvu zebhola ezivalwe ngokuqinileyo ezinemizimba ye-ASTM WCB, uqinisekise amazinga okuhamba (<40m/s), kwaye usebenzise ulondolozo oluqhelekileyo.