Iwasha yokuvala uphawuwuhlobo lwengxenye eyisipele esetshenziselwa ukuvala imishini, okokusebenza, namapayipi nomaphi lapho kunoketshezi. Kuyimpahla esetshenziselwa ukuvala ngaphakathi nangaphandle. Amawasha okuvala enziwe ngensimbi noma ngepuleti elingelona elensimbi njengezisetshenziswa ngokusika, ukugxiviza, noma izinqubo zokusika, ezisetshenziselwa ukuvala ukuxhumana phakathi kwamapayipi naphakathi kwezingxenye zemishini yomshini. Ngokusho kwempahla, ingahlukaniswa ngamawasha okuvalwa kwensimbi kanye namawasha okuvala uphawu angewona awensimbi. Amawasha ensimbi ahlanganisa amawasha ethusi,amawasha ensimbi engenasici, amawasha ensimbi, amawasha e-aluminium, njll. Okungezona ezensimbi kufaka phakathi amawasha e-asbestos, amawasha angewona ama-asbestos, amawasha amaphepha,amawasha enjoloba, njll.
Kufanele kuqashelwe amaphuzu alandelayo:
(1) Izinga lokushisa
Ezinqubweni eziningi zokukhetha, izinga lokushisa loketshezi liwukucatshangelwa okuyinhloko. Lokhu kuzonciphisa ngokushesha ububanzi bokukhetha, ikakhulukazi ukusuka ku-200 ° F (95 ℃) kuye ku-1000 ° F (540 ℃). Lapho izinga lokushisa lokusebenza kwesistimu lifinyelela umkhawulo ophezulu wokushisa oqhubekayo wokusebenza wempahla ethile ye-washer, izinga eliphezulu lempahla kufanele likhethwe. Lokhu kufanele kube njalo ezimweni ezithile ezisezingeni eliphansi lokushisa.
(2) Isicelo
Imingcele ebaluleke kakhulu ekusetshenzisweni uhlobo lwe-flange kanye neamabhawodiesetshenzisiwe. Usayizi, inani, kanye nebanga lamabhawodi ekusetshenzisweni kunquma umthwalo osebenzayo. Indawo ephumelelayo yokucindezela ibalwa ngokusekelwe kusayizi wokuxhumana wewasha. Ingcindezi yokuvala iwashi esebenzayo ingatholakala emthwalweni webhawodi kanye nendawo yokuxhumana yewashi. Ngaphandle kwale parameter, bekungeke kwenzeke ukwenza ukukhetha okuhle phakathi kwezinto eziningi.
(3) Imidiya
Kunezinkulungwane zoketshezi phakathi nendawo, futhi ukubola, i-oxidation, kanye nokungena koketshezi ngalunye kuyahluka kakhulu. Izinto zokwakha kumele zikhethwe ngokwalezi zici. Ngaphezu kwalokho, ukuhlanzwa kwesistimu kufanele futhi kucatshangelwe ukuvimbela ukuguguleka kwe-washer ngesisombululo sokuhlanza.
(4) Ingcindezi
Uhlobo ngalunye lwewasha lunengcindezi ephezulu kakhulu, futhi ukusebenza kwewashi okuthwala ingcindezi kuba buthaka ngokwanda kogqinsi lwempahla. Ukuncipha kwempahla, kuyanda amandla okuthwala ingcindezi. Ukukhethwa kufanele kusekelwe ekucindezelekeni koketshezi ohlelweni. Uma ingcindezi ivame ukuguquguquka ngamandla, kuyadingeka ukuqonda isimo esinemininingwane ukuze wenze ukukhetha.
(5) Inani le-PT
Inani elibizwa nge-PT liwumkhiqizo wengcindezi (P) kanye nezinga lokushisa (T). Ukumelana nengcindezi ngayinyeowashaimpahla iyahlukahluka emazingeni okushisa ahlukene futhi kufanele kubhekwe kabanzi. Ngokuvamile, umenzi wama-gaskets uzohlinzeka ngenani eliphezulu le-PT lempahla.
Isikhathi sokuthumela: Jul-17-2023
