Njengamanje, izimpawu zemishini zisetshenziswa kakhulu emikhiqizweni yepompo, futhi ngokuthuthukiswa kobuchwepheshe bomkhiqizo kanye nezidingo zokonga amandla, ithemba lokufaka isicelo se-pump mechanical seals liyoba libanzi.Pump mechanical seal noma uphawu, olunobuso obubili obuncikene ne-eksisi yokuzungeza, ingcindezi yoketshezi ngaphansi kwesenzo samandla anwebekayo kanye nesigxivizo somshini ngaphandle kwendlela yesinxephezelo, sinokuncika komunye umkhawulo we-axiliary seal. nokugcina impilo, kanye nokushelela okuhlobene, ngaleyo ndlela Vimbela ukuvuza koketshezi.Lesi sihloko sizoxoxa ngezimpawu zemishini zamaphampu.
1 Isimanga kanye nezimbangela zophawu lwemishini lokuvuza kwepompo
1.1 Ingcindezi izodala ukuthi uphawu lukamshini lwephampu luvuze
Ngenxa yokuvuza kophawu lwemishini lwe-vacuum operation engu-1.1.1
Phakathi nenqubo yokuqalisa, iphampu iyamiswa.Isizathu sokuvaleka kwendawo yokungena yepompo, njengomoya ompontshwayo oqukethe i-medium, kungenza umgodi wophawu lomshini ube nengcindezi engalungile.Uma i-seal cavity ingcindezi inegethivu, izodala ukungqubuzana okomile endaweni evalekayo kanye nokuvuza kwesakhiwo somshini esakhelwe ngaphakathi.Kuzokwenza ukuthi kwenzeke (amanzi).Ama-vacuum seal ahlukene kanye ne-positive pressure seal iwumumo ongemuhle wento kanye nokuvalwa kwayo, futhi izigxivizo ezisebenza ngomshini zinendlela ethile.
I-Countermeasure: Yamukela i-double end face seal mechanical, esiza ukuthuthukisa izimo zokugcoba nokuthuthukisa ukusebenza kokuvala.
1.1.2 Ibangelwa ukuvuza kwesigxivizo sikamshini sokupompa ngomfutho ophezulu kanye namagagasi okucindezela
Ngenxa yokuthi ukwakheka kwengcindezi yasentwasahlobo kanye nenani eliphelele lokucindezela kukhulu kakhulu futhi ingcindezi ye-seal cavity idlula i-3MPa, kuzobangela ukucindezela okukhethekile kwendawo yokugcina uphawu lwephampu kube kukhulu kakhulu, kunzima ukwenza ifilimu yokuvala. , ukugqoka, ukwanda kokushisa, okubangelwa ukuguqulwa kokushisa kwendawo yokubeka uphawu.
Izinyathelo Zokuphikisa: Lapho uhlanganisa uphawu lwemishini, ukucindezela kwentwasahlobo kufanele kuhambisane nemithethonqubo.Izigigaba ezeqisayo noma ezincane kakhulu azivunyelwe.Izinyathelo kufanele zithathwe ngaphansi kwezimo ze-high-pressure mechanical seals.Ukuze wenze ukucindezeleka okungaphezulu kube okunengqondo futhi kuncishiswe ukuguquguquka, izinto eziqinile ezifana ne-cemented carbide ne-ceramic zingasetshenziswa, futhi izinyathelo zokupholisa nezokugcoba kufanele ziqiniswe, kanye nokukhethwa kwezindlela zokudlulisela ezinokwethenjelwa, njengezihluthulelo, izikhonkwane. , njll.
1.2 Ukuvuza kophawu lwemishini ngezikhathi ezithile
1.2.1 Ukudlidliza kwe-rotor ngezikhathi ezithile.Isizathu siwukuthi i-stator kanye nesembozo sokugcina esiphansi asikho noma siphuma ebhalansi phakathi kwe-impeller kanye ne-shaft eyinhloko, i-cavitation noma ukuthwala umonakalo (ukugqoka), okuzonciphisa ukuphila kokuvuza kwe-mechanical seal.
Izinyathelo Zokulwa: Xazulula inkinga yokuvuza kophawu lwemishini ngezikhathi ezithile ngokwezindinganiso zokunakekela.
1.2.2 Umfutho we-axial we-rotor yepompo uphazamisa inombolo yezinsimbi ezisizayo zemishini kanye ne-shaft, futhi iringi enyakazayo ayikwazi ukuhamba ngokuguquguqukayo ku-shaft.Ku-pump reverse, ukuguquguquka, ukuguga kwendandatho emile, akukho ukususwa kwesinxephezelo.
Izinyathelo eziphikisanayo: Kumshini wokuvala uphawu, i-axial momentum shaft kufanele ibe ngaphansi kuka-0.1mm, futhi uphawu lomshini kanye nenani le-shaft lephampu eliyisizayo lokuphazanyiswa kufanele libe phakathi.Ngenkathi uqinisekisa uphawu lwe-radial, qinisekisa ukuthi i-shaft inganyakaziswa ngokuguquguqukayo ekuhlanganiseni kwendandatho ehambayo (inkomba yokucindezela kwendandatho ehambayo).Intwasahlobo ingabuya ngokukhululeka).
Inani elinganele lamafutha okugcoba ebusweni libangelwa ukungqubuzana okomile noma ukwakheka kophawu lwemishini yamaphampu okugcina avaliwe.
Izinyathelo Zokulwa: Ubude bendawo kawoyela yokuthambisa ye-cavity yegumbi likawoyela kufanele kwengezwe endaweni eguquguqukayo nemile yokuvala indandatho ngaphezulu.
1.3.Ezinye izinkinga ezidalwe ukuvuza kwe-mechanical seal yepompo
1.3.1 Ukuphela kwe-shaft (noma umkhono) wezigxivizo zemishini kanye nokufakwa kweringi kanye nendawo yokugcina yokufakwa (noma indlu) yendandatho emile ye-ring seal seal kufanele kushaywe, futhi ukuhlanganisa ukugwema ukunwaya. indandatho yokuvala.
1.3.2 Ukucindezela kwentwasahlobo kumele kuhambisane nemithethonqubo.Izigigaba ezeqisayo noma ezincane kakhulu azivunyelwe.Iphutha ngu-2mm.Ukucindezelwa ngokweqile kukhulisa ingcindezi ethile yobuso bokuphela, ukushisa okungqubuzana okweqile, nokugqoka kwangaphezulu kubangela ukuwohloka kokushisa nokusheshisa kwendawo evalekayo, kanye nenani lokucindezelwa Uma indandatho emile incane kakhulu, ingcindezi ethile yobuso bokugcina ayanele. futhi ingavalwa.
Isikhathi sokuthumela: Dec-17-2021