Valve Ukuphepha: isicelo nezinhlobo

Kunzima overestimate indima valve ukuphepha ohlelweni Ukushisa, ngenxa operation yabo efanele, sibekandzaba izinga zincike ukutholakala kanye ukuthembeka zobunjiniyela. valve Safety, kuyacaca igama labo, ziqinisekise ukuthi ziyakuvikela lokhu ngokumelene ingcindezi inyuka ngaphezulu kwenani ovumelekile.

I kokupholisayo kumbuthano avaliwe ekushiseni ukwenyuka ivolumu, futhi ukwanda umthamo kufanele kube ethangini ukunwetshwa, ingcindezi futhi kwandisa ku Ukushisa wesifunda. Phakathi operation evamile valve ukuphepha kumele siyibonakalise avaliwe, kuphela endabeni ka-kahle noma Ukukhetha okungafanele ethangini ukunwetshwa uma akubandakanyi ngokweqile kokupholisayo ivolumu nokucindezelwa liyaphuma ngenhla ezingeni esiphezulu - kufanele asebenze valve.

Ukuphepha valve efakiwe endaweni evaliwe iluphu uhlelo lapho Ukushisa kokupholisayo: lena uhlelo nge ngalendoda welanga kanye futha ukushisa; irherho le-closed nokutholakala kwamanzi emithonjeni eshisayo exhunyiwe amanethiwekhi ezishisayo; futhi ixhunywe nge ukushisa noma boilers ezizimele.

Kuyadingeka yini sizihlole izimfanelo Ukushisa ngamunye isici phakathi valve Ukukhetha. It ukhethwa ngendlela yokuthi i actuation yayo ingcindezi Kwakungekhona ngaphezu esiphezulu ukusebenza ingcindezi kancane, eliqinile Ukushisa isici. Ngaphezu kwalokho, i-ukusebenza kwe-ingcindezi kufanele kube phakathi wonke amagugu okulungisekayo. valve Safety babe uphuma khona, ngokuvamile elilodwa noma amabili osayizi kunangendlela okokufaka.

In izinhlelo nge izimpahla ezibizayo noma nge kwengozi ingcindezi ukwandisa kutuswa ukufaka valve ababili babe sebehlela side by side. Ngaphezu izinhlelo wokubacindezela nge wabuka avaliwe, kungenzeka valve asetshenziswa kunoma iyiphi idivayisi lapho ingcindezi uyakwazi sedlule ukubaluleka ovumelekile. Lokhu kungaba izinhlelo ezixhunywe Ukushisa inethiwekhi by isikimu engaphansi, lapho wokubacindezela hhayi ukuvala amathuba ezingozi nge okwandisa ingcindezi ngenhla amagugu esiphezulu.

Kulokhu, valve zokuphepha ezikhona ukufakwa ipayipi ukubuya futhi ekhethiwe ukuze liphele kokupholisayo ukugeleza ingamaphesenti izindleko ngaphezulu, okuyinto agelezela bafudumale system ikumodi eziphuthumayo.

Ngu design, valve zihlukaniswe ulwelwesi kanye entwasahlobo.

Ebusweni engaphakathi valve diaphragm futhi uphawu ebusweni flange yokuxhuma embozwe izinto zokuzivikela amelana imiphumela kwamakhemikhali ahlukahlukene ezonakalisayo. Siyabonga kuye, behlukene imvelo sangaphandle abasebenzi. Guides kuqinisekisa ukunyakaza efanele spool, okuyinto licindezele ulwelwesi.

Ukuphepha umphini entwasahlobo ingasetshenziswa ahlukahlukene ingcindezi-actuated kulungiselelwa imikhawulo ngenxa ukukha iziphethu ahlukahlukene. Futhi, valve eziningi akhiqizwa nge indlela ekhethekile (ukhunta, a isigwedlo) ukulawula blowdown.