Izizathu zokutshixa iziqhoboshi, izihluzi kunye neegaskets zokufakelwa kwevalvu kunye neendlela zokuthintela ukutshixa.

Izizathu zokutshixa iziqhoboshi, izihluzi kunye neegaskets zokufakelwa kwevalvu kunye neendlela zokuthintela ukutshixa.

I-Gasket inokohlulwa ibe ziindidi ezimbini zeplastiki ethambileyo kwaye ilukhuni, iplastiki ethambileyo ayiyonto yentsimbi ngokubanzi, njengekhadibhodi eshinyeneyo, iplastiki, ibhodi yerabha yeasbestos, PTFE njalo njalo. I-hard ngokuqhelekileyo yimathiriyeli edibeneyo yesinyithi okanye imathiriyeli yentsimbi egqunywe ngoboya bamatye, ingxubevange kunye noboya bamatye obujijelweyo. Iigaskets ziza kwiimilo ezininzi, kubandakanywa flat, round, oval, toothed, lens, kunye nezinye iimilo ezizodwa. Ukuveliswa kunye nokuveliswa kweendawo zevalve yesango yezinto ezininzi eziluhlaza, kubandakanywa neentlobo ezahlukeneyo zetsimbi ekhanyayo kunye nentsimbi enqabileyo kunye ne-aluminium alloy, izinto ezahlukeneyo ze-non-metallic.
1. Imathiriyeli ekrwada yeefasteners
I-Fasteners ikakhulu ibandakanya iibholiti ze-anchor, iibholiti zentloko ezininzi kunye namantongomane. Izibophelelo zithwala ngokuthe ngqo amandla kwiivalvu zesango, ezibaluleke kakhulu ukuphepha ukulahleka kweendaba. Ngoko ke, izinto ezikhethiweyo ezikhethiweyo kufuneka ziqinisekise amandla okwaneleyo kunye nokuqina kweqhekeza kwiqondo lokushisa lesicelo. Khetha idatha ye-fastener ngokoxinzelelo oluphakathi kunye nobushushu.

Inkqubo yokushisa ukushisa iyadingeka xa kusetyenziswa izinto ze-carbon steel. Xa iindawo eziqinisiweyo zinemigangatho ekhethekileyo yokumelana nokubola, i-Cr17Ni2, i-2Cr13, i-1Cr18Ni9 kunye nezinye i-acids stainless resistant steel zingakhethwa.
Eyesibini, i-filler ekrwada
Kumzimba wevalvu, ukupakishwa kusetyenziselwa ukugcwalisa isithuba sangaphakathi segumbi lokupakisha ivalve enye ukunqanda ukuvuza kwemithombo yeendaba ngesitulo sevalve kunye negumbi lokupakisha ivalve enye yendawo yangaphakathi.
1. Imfuno yokugcwaliswa
I-1) Ukumelana nokugqwesa okulungileyo, ukupakisha kunye noqhagamshelwano oluphakathi, kufuneka lukwazi ukuxhathisa ukubola kwe-medium.
2) Isakhiwo esiqinileyo, ukupakisha akuvuzi phantsi kwefuthe lobushushu obuphakathi kunye nokusebenza.
I-3) Ukuxhatshazwa okuphantsi kokunciphisa ukunciphisa i-torque ye-friction phakathi kwesihlalo kunye nokupakisha.
2, uhlobo lokupakisha
Ukupakisha kunokwahlulwa kube yiplastiki ethambileyo yokupakisha kunye nokupakisha kanzima kwiindidi ezimbini:
1) Isithambiso seplastiki esithambileyo: senziwe ngezinto zokutyala eziluhlaza, ezizezi, ilinen, iqhaphu, ilinen, njl. kunye nomhlaba kwi-filling filler, kunye namathuba amatsha ezinto eziguquguqukayo zegraphite filler kule minyaka yakutsha nje. Ukupakisha izinto zezityalo eziluhlaza kuneendleko eziphezulu, ikakhulu ezisetyenziselwa iivalvu zoxinzelelo oluphantsi ngaphakathi kwe-100 ℃; Ukupakishwa kwamaminerali kufanelekile kwi-valve yesango ye-450-500 ℃. Kwiminyaka yakutshanje, ukwakhiwa kwe-O-ring yeplastiki njenge-filler ithandwa ngokuthe ngcembe, kodwa ubushushu obuphakathi bulawulwa ngokubanzi ngaphakathi kwe-60 ℃. Ukupakishwa kwiqondo lokushisa eliphezulu kunye ne-valve yoxinzelelo oluphezulu lwenziwe nge-asbestos ecocekileyo kunye ne-flake ye-graphite powder.
2) Ukupakisha okunzima: ukupakisha okwenziwe ngezinto zetsimbi okanye isinyithi exutywe ne-asbestos, igraphite ecocekileyo kunye ne-polytetrafluoroethylene yokucofa i-calcination kunye nokwenza ukupakisha, isicelo sokupakisha isinyithi sincinci.
3, ukhetho lokugxumeka
Ukhetho lokuzalisa kufuneka lusekelwe kumbindi, ubushushu kunye noxinzelelo lokukhetha, izixhobo eziqhelekileyo eziluhlaza zinala manqaku alandelayo:
1) I-oyile kwilaphu le-asbestos, inokukhethwa ngokweThebhile 5-2.
2) Ilaphu le-asbestos yeplastiki: inokukhethwa ngokweThebhile 5-3.
I-3) ilaphu le-asbestos elicocekileyo legraphite: ilaphu le-asbestos liqatywe kwi-flake yegraphite, ubushushu bunokusetyenziswa ngaphezu kwe-450 ℃, uxinzelelo lokusebenza lunokufikelela kwi-16Mpa, lufanelekile ngokubanzi kumphunga woxinzelelo oluphezulu. Kutshanje kwaye ngokuthe ngcembe ukusetyenziswa koxinzelelo lwefonti yokugcwaliswa kwabantu abadala, ukubekwa kwesantya ethangeni, ubume obubambeneyo.
I-4) i-polytetrafluoroethylene: Le yinto esetyenziswa kakhulu ukuzalisa kweli nqanaba. Ifumaneka ngakumbi kwindawo engcolisayo, kodwa ubushushu abunakuba ngaphezulu kwe-200℃. Ngokuqhelekileyo, yenziwe nge-sppressor okanye intonga ejikelezayo, njengoko kuboniswe kuMzobo 5-1 ngezantsi.
Qaphela: Inombolo yembonakalo F ibonisa isikwere, i-through-core okanye enye ukuya kwi-double braid; Y ibonisa ukuba ingqukuva, kunye mandrel ejijekileyo phakathi kunye umaleko omnye ukuya ezimbini ephothiweyo ngaphandle; N ithetha ukuba ijijekile.
Ezintathu, izinto zegasket
I-gasket isetyenziselwa ukuzalisa iindawo ezi-2 ezidibeneyo (ezifana nomphezulu phakathi kwepleyiti yesekethe yeoli kunye ne-valve eyodwa yokuhamba) phakathi kwazo zonke ezingalinganiyo, ukwenzela ukuphepha ukuvuza kweendaba ukusuka kwindawo edibeneyo.
1. Imfuno yokutywinwa kweegaskets
Izinto ze-Gasket zine-elasticity ethile kunye neplastiki kunye namandla aneleyo oxinzelelo kwiqondo lokushisa lokusebenza ukuqinisekisa ukuqina. Kwangaxeshanye, kufuneka ibe nokumelana nokugqwesa okungcono.
2, uhlobo gasket impahla kunye nesigwebo
I-Gasket inokohlulwa ibe ziindidi ezimbini zeplastiki ethambileyo kwaye ilukhuni, iplastiki ethambileyo ayiyonto yentsimbi ngokubanzi, njengekhadibhodi eshinyeneyo, iplastiki, ibhodi yerabha yeasbestos, PTFE njalo njalo. I-hard ngokuqhelekileyo yimathiriyeli edibeneyo yesinyithi okanye imathiriyeli yentsimbi egqunywe ngoboya bamatye, ingxubevange kunye noboya bamatye obujijelweyo. Iigaskets ziza kwiimilo ezininzi, kubandakanywa flat, round, oval, toothed, lens, kunye nezinye iimilo ezizodwa.
Izinto ekrwada yokutywina gasket ngokubanzi 08, 10, 20 umgangatho carbon steel kunye 1Cr13, 1Cr18Ni9 ipleyiti stainless steel, ukuchaneka dimensional kunye neemfuno umtyibilizi umphezulu kakhulu, ilungele ubushushu obuphezulu kunye neevalvu zoxinzelelo oluphezulu. Imathiriyeli ye-gasket ye-non-metallic ilungile, kunye noxinzelelo oluncinci lokusebenza kunokufikelela ukutywinwa. Ifanelekile kwi-ultra-low kunye ne-valve yoxinzelelo oluphantsi. Izinto zeGasket zingakhethwa ngokweThebhile 5-4.
Itheyibhile 5-4
Ukuveliswa kunye nokuveliswa kweendawo zevalve yesango yezinto ezininzi eziluhlaza, kubandakanywa neentlobo ezahlukeneyo zetsimbi ekhanyayo kunye nentsimbi enqabileyo kunye ne-aluminium alloy, izinto ezahlukeneyo ze-non-metallic.
Imathiriyeli ekrwada yokuveliswa kunye nokuveliswa kweendawo zevalve yesango kufuneka zikhethwe ngokwezi zinto zilandelayo:
1, ukusebenza ngoxinzelelo oluphakathi, ubushushu kunye neempawu.
I-2, amandla okuthwala amacandelo kwaye ihlala idlala indima kwisakhiwo sevalve.
3. Ukusebenza kakuhle kwenkqubo.
4. Phantsi kwesiseko sokuhlangabezana nale miqathango ingentla, iindleko eziphantsi kakhulu ziyafuneka.
Izibophelelo zetsimbi kwii-fasteners ziya kuhlala zigqwala ngenxa yezizathu ezahlukeneyo. Xa kusenzeka umhlwa, ezinye iziqhoboshi ziya kutshixa ngokupheleleyo, nto leyo ekhokelela ekuphulukaneni nokusebenza kakuhle kwezibophelelo ngokwazo. Enyanisweni, akunakwenzeka ukuba udibanise okanye utshixe izibophelelo ngokuqhubekayo. Ukutshixa okupheleleyo kwee-fasteners kunokwenzeka kuphela kwimizuzwana embalwa, ngoko ke kuyimfuneko ukuqonda okucacileyo kunye nokusetyenziswa kwe-fasteners ukukhusela ukutshixa. Ukutshixwa kweFastener kudla ngokuba kwipleyiti yentsimbi engatyiwayo okanye imathiriyeli ye-aluminiyam eyenziwe ngempahla...
Izibophelelo zentsimbi ziya kuhlala zirusa ngenxa yezizathu ezahlukeneyo. Xa kusenzeka umhlwa, ezinye iziqhoboshi ziya kutshixa ngokupheleleyo, nto leyo ekhokelela ekuphulukaneni nobuchule bokusebenza kwezibophelelo ngokwazo. Enyanisweni, akunakwenzeka ukuba udibanise okanye utshixe izibophelelo ngokuqhubekayo. Ukutshixa okupheleleyo kwee-fasteners kunokwenzeka kuphela kwimizuzwana embalwa, ngoko ke kuyimfuneko ukuqonda okucacileyo kunye nokusetyenziswa kwe-fasteners ukukhusela ukutshixa.
1. Izizathu eziphambili zokutshixa i-fastener
Ukutshixa kweziqhoboshi ngokuqhelekileyo kubonakala kwiimpahla ezenziwe ngepleyiti yensimbi engenasici okanye i-aluminium ingxubevange yezinto, ngakumbi ngenxa yokuba izinto ezidibeneyo zentsimbi zinamandla okulwa nomhlwa, xa umphezulu wesinyithi we-fasteners wonakaliswa, kulula ukuvela umaleko we-oxide ukubonelela. ukugcinwa kunye nokuthintela ukuhlaselwa kwe-rust, kodwa xa izibophelelo ziqinisiwe, Ubushushu boxinzelelo oluveliswa yi-reaction force buya kulimaza i-oxide layer kwaye kukhuthaze ukuplaga okanye ukusika phakathi kwezinto zetsimbi, okubangela ukunamathela, okuvalela ngokwenene.
2, isiqhoboshi sokuthintela indlela yokutshixa:
★ Ukutshixa i-fasteners akunakugwenywa ngokupheleleyo, kodwa sinokunciphisa amathuba okutshixa ngokunikela ingqalelo kwinto nganye, njengokuqinisekisa amandla omthwalo we-fasteners, ukukhetha amantongomane kunye neebholiti ngamandla acinezelayo, njl.
★ Ukucoca isikrufu sokuqhotyoshwa asikokucoca kwakhona kunempembelelo ethile malunga nokuba ukutshixa, xa i-screw ayigudi okanye ayicoci, ukutshixa rhoqo, ngoko ngaphambi kokusetyenziswa ukuqinisekisa ukuba umsebenzi wokucoca i-fastener, ipini yentsimbi okanye inkunkuma.
★ Emva kokulungiswa kokumanzisa okufanelekileyo kunye nokumodareyitha kwee-fasteners, ubushushu obuveliswa yimeko yezinto zetsimbi bungancitshiswa ngokufanelekileyo ngenxa yamandla okuthwala, okuya kunciphisa ngokwemvelo amathuba okuvala i-fastener.
★ Izibophelelo kufuneka zitywinwe kwaye zifakwe ngendlela echanekileyo, ukutshixa kuncinci kwaye kuncinci kwenzeka.