Iingxaki eziqhelekileyo zokufudumeza ivalve yesango lokukhusela ivalve yesango Uhlalutyo Ulwazi olusisiseko lwevalve yokhuseleko

Iingxaki eziqhelekileyo zokufudumeza i-valve yesango lokukhusela isithando somlilo Uhlalutyo Ulwazi olusisiseko lwevalve yokhuseleko 1. Ingabula-zigcawu Ivalve yokhuseleko yivalve yesango yokulondoloza ebalulekileyo, esetyenziselwa iintlobo ngeentlobo zeenqanawa zoxinzelelo oluphezulu kunye nemibhobho yokuhambisa, xa uxinzelelo olusebenzayo kwinkqubo yoxinzelelo ludlula umgangatho. ixabiso, inokuvula ngokuzenzekelayo, izinto ezigqithisiweyo zikhutshelwe emoyeni, ukuqinisekisa ukusebenza ngokukhuselekileyo kweenqanawa zoxinzelelo oluphezulu kunye nemibhobho yokuhambisa, ukuphepha ukwenzeka kweziganeko, Kodwa xa uxinzelelo lwenkqubo yesofthiwe luwela emva koxinzelelo okanye ngaphantsi kancinci. uxinzelelo, inokuphuma ngokuzenzekelayo. Umsebenzi onxulumene nevalve yokhuseleko unxulumene ngokuthe ngqo nokhuseleko lwezixhobo kunye nokhuseleko lomntu, ngoko ke kufuneka sinikele ingqalelo ephezulu. 2. Iingcambu ezibangela kunye nezisombululo zeengxaki eziqhelekileyo zevalve yokhuseleko 2.1, ukuvuza kwesango  Ngaphantsi koxinzelelo oluqhelekileyo lokusebenza kwenkqubo, ukuvuza kwevalve yepiston kunye nevalve yesango loxinzelelo oluphezulu kwindawo yokutywina idlula inqanaba elivumelekileyo, kwaye ukuvuza kwevalve yepiston kunye noxinzelelo oluphezulu lwevalve kwindawo yokutywina kudlula kwinqanaba elivumelekileyo ivelufa yokhuseleko ayiyi kubangela umonakalo wezinto eziphathekayo kuphela. Ukongeza, i-medium iya kuqhubeka nokuvuza amatywina erabha enzima iya konakaliswa, nangona kunjalo, indawo yokutywinwa yevalve yokhuseleko eqhelekileyo iyizo zonke izinto ezixubene nesinyithi kwizinto zetsimbi, nangona ukwenza ngokutyibilikayo nangocwangco, kodwa kunzima kakhulu ukuqinisekisa amanzi. ukuvuza phantsi kwesiseko soxinzelelo lwezinto eziphathekayo. Ke ngoko, i-medium yivalve yokhuseleko lomphunga, phantsi koxinzelelo lwenkqubo echaziweyo, ukuba iliso lenyama alikwazi ukubona ekungeneni nasekuphumeni, nalo alikwazi ukuva ukuvuza, cinga ukuba ukuqina kuhambelana neemfuno. Ngokubanzi, kukho izizathu ezithathu eziphambili zokuvuza kwevalve yesango: Imeko enye kukuba intsalela emdaka iwela kumphezulu wokutywina, kwaye umphezulu wokutywina ugqunyiwe, okukhokelela kumsantsa phakathi kwespool kunye nevalve yesango loxinzelelo oluphezulu, kunye nesango. ukuvuza kwevalvu. Indlela yokususa olu hlobo lwempazamo eqhelekileyo kukugqabhuka kubumdaka kunye nentsalela kwindawo yokutywina, ngokubanzi kwiziko lokufudumeza kwangaphambili ukulungiselela ukulungiswa kwebhoyila yokuvuthela ubungakanani bombhobho, owokuqala ukwenza umfuniselo wokukhokela umnyango wokhuseleko, wakuba ufunyenwe. Ukuvuza kwebhoyila yokuvuthela umbhobho kwakhona kuqhutywe ukugcinwa kokudilika, ukuba kusemva kokuba iziko liqhube uvavanyo olukhokelayo lufumanise ukuba ukuvuza kocango lokhuseleko, kunokubangelwa yinto enjalo, Ukhokelo lunokuqhuba emva kwemizuzu engama-20 yefriji kwaye emva koko luqhube umphini wokuvala, umphezulu wokutywina wokuhlamba. Enye imeko kukutywinwa komonakalo womphezulu. Izizathu eziphambili ezikhokelela kumonakalo wokutywinwa komphezulu zezi zilandelayo: Okokuqala, umphezulu wokutywina umbi. Umzekelo, kwiNombolo ye-3 ~ 9 yomnyango wokhuseleko oluphambili ngenxa yeminyaka yolondolozo, i-spore yocango oluphambili kunye noxinzelelo oluphezulu lokutywinwa kwevalve yesango luye lwafundwa ngokubanzi luphantsi kakhulu, ukuze ukuqina komphezulu wokutywina kuncitshiswe, okukhokelela ekubeni ukutywina okuncitshisiweyo, eyona ndlela ifanelekileyo yokususa le meko kukusila phantsi indawo yokutywina yokuqala, kwaye ngoko ngokutsho kwemizobo yobunjineli kwakhona imveliso yokutshiza ye-welding kunye nokucubungula, Ukuphucula ubulukhuni bomphezulu wokutywina. Nika ingqalelo kumgangatho wemveliso kufuneka uqinisekiswe kwinkqubo yemveliso, njengokuvaleka komphezulu wokutywina, imingxunya yesanti kunye nezinye iziphene kufuneka zigubungele emva kwemveliso kunye nokulungiswa. Ivalve entsha yesango yoxinzelelo oluphezulu kufuneka ihambelane nemigangatho yokuzoba yobunjineli. Okwangoku, ukusetyenziswa kwe-YST103 yentsimbi ye-welding ye-universal welding intonga yokutshiza ukusetyenzwa kwe-welding ukwenza i-valve core yokutywinwa komhlaba ilungile kakhulu. Okwesibini, umgangatho wokugcinwa awulungile, i-spool yoxinzelelo oluphezulu lwe-valve yokusila ayikwazi ukuhlangabezana nemigangatho yomgangatho wemveliso, indlela yokususa olu hlobo lweziphoso eziqhelekileyo kukusebenzisa indlela yokusila okanye yokugaya ukulungisa indawo yokutywina ngokweqondo. yomonakalo. Omnye unobangela omkhulu wokuvuza kwevalvu yokhuseleko kukufakwa ngokungafanelekanga okanye ubungakanani beendawo ezifanelekileyo bukhulu kakhulu. Kwikhonkco lofakelo, ivalve yesango loxinzelelo oluphezulu lwe-spool khange ilunge okanye kukho ukuvuza okukhanyayo kwindawo edibeneyo, okanye indawo yokutywina yevalve yesango loxinzelelo oluphezulu ye-spool ibanzi kakhulu ukuba ingatywinwa. Khangela ubungakanani kunye nokufana kwe-clean ejikeleze indibano ye-spool, qinisekisa ukuba umngxuma wangaphambili we-spool kunye nomgangatho wokutywinwa uyafana, kwaye ukhangele i-voids kuyo yonke indawo ayinakuphuma ngaphandle kwe-spool; Ngokwemizobo yobunjineli, ububanzi bendawo yokutywina kufuneka buncitshiswe ukufezekisa ukutywinwa okufanelekileyo. 2.2 ibhodi yesekethe ye-oyile evuzayo,   Ibhekisa kwingxaki yokuvuza kwamanzi kumphezulu ongathanga ngqo wepleyiti yesekethe yeoyile, ekhokelela kolu hlobo lokuvuza kwezi zizathu zibalulekileyo zilandelayo: okokuqala, umphezulu odibeneyo webholiti ye-ankile yokuqinisa amandla awonelanga. okanye ukuqina, okukhokelela ekutywinweni komphezulu odibeneyo akulunganga kakhulu. Yiyiphi indlela yokucoca yokulungelelanisa amandla okuqinisa ibholithi? Xa uqinisa i-anchor bolt, kufuneka iqhutywe ngendlela yokuqinisa ngokwe-Angle ephezulu. Kungcono ukulinganisa ngokuchanekileyo indawo kwindawo nganye kwaye uqinise i-bolt ye-anchor de ihambe, ukwenzela ukuba wenze indawo edibeneyo ibe yindawo efanayo kwindawo nganye. Okwesibini, ipleyiti oyile ipleyiti edibeneyo umphezulu izinyo uhlobo lokutywina igasket ayihlangabezani neemfuno. Umzekelo, uhlobo lwezinyo lokutywina i-gasket axial groove encinci, ukucaba, uhlobo lwezinyo elibukhali kakhulu okanye ithambeka kunye nezinye iintsilelo ziya kukhokelela ekutywinweni okungasebenziyo. Ukuze ipleyiti yesekethe ipleyiti edibeneyo umphezulu ukuvuza. Ekugcinweni kweendawo zokulawula umgangatho, ukukhethwa kweegaskets zokutywinwa kwamazinyo ezisemgangathweni kunokuphepha olu hlobo lwemeko. Eyesithathu yipleyiti ye-oyile yesekethe yomphezulu womphezulu othe tyaba umbi kakhulu okanye intsalela eqinileyo iphedi ekhokelela ekutywinweni okungasebenziyo. Kuba ipleyiti yesekethe ipleyiti yomphezulu odityanisiweyo obangelwa kukuguda okulambathayo kwepleyiti yeoli yesekethe edibeneyo yokuvuza kwamanzi, indlela yokususa kukudiliza ivalve yesango kunye nokusila indawo edibeneyo kwakhona de ihlangane nemigangatho yomgangatho wemveliso. Ngenxa yokuba iphedi yentsalela ebangelwa ukutywinwa ayisebenzi, kwindibano yevalve yesango susa ngokucophelela umphezulu odibeneyo ukukhusela intsalela ewela kuyo. 2.3, i-impulse safety valve posture Shu i-valve yokhuseleko engundoqo ye-valve Le meko yaziwa ngokuba yi-primary security rejection. Umnyango oyintloko wokhuseleko uvaliwe ukusetyenziswa komonakalo weziko lokufudumeza mkhulu kakhulu, sisixhobo esikhulu esifihliweyo sengozi, ingozi enkulu ekusebenzeni ngokukhuselekileyo koomatshini kunye nezixhobo, emva kokusetyenziswa kweenqanawa zoxinzelelo oluphezulu kunye nemibhobho kwizinto ezisebenza ngoxinzelelo olungaphaya. i-current rated, ucango oluphambili lokhuseleko aluyiyo i-posture, ukwenzela ukuba umsebenzi woxinzelelo olugqithisileyo kulula ukubangela umonakalo koomatshini kunye nezixhobo kunye neengozi ezinkulu zokhuseleko. Ngaphambi kokufunda izizathu eziphambili zomnyango wokhuseleko oluphambili wenqaba ukuhamba, qala uhlalutye umgaqo osisiseko womsebenzi oyintloko wokhuseleko lomnyango. Njengoko kubonisiwe kwi-Figure 1 ngezantsi, xa uxinzelelo kwisitya soxinzelelo lukhuphuka kulo lonke uxinzelelo lwevalve ye-impulse relief valve, indawo yevalve yokukhulula i-impulse relief valve, izinto zihamba ukusuka kwisitya ukuya kwigumbi eliphambili lepiston yokhuseleko ngokombhobho. igumbi lepiston kuya kubakho ukwanda okuncinci kokunciphisa uxinzelelo lwegazi, ukuba uxinzelelo lwegesi kwigumbi le-piston yi-P1, indawo ye-piston throttle malunga ne-Shs, ngoko i-f1 esebenza kwi-piston yile: F1 = P1 nge-Shs... .......................................... (1) Ukuba uxinzelelo lwegesi ephakathi isitya soxinzelelo yi-P2, kwaye indawo ye-valve core imalunga ne-Sfx, ngoko amandla okusebenzisana f2 yezinto ezityhalela phezulu kwi-valve core yile: F2 = P2 x Shx ... (2) Ukuvula kwepiston yevalve ngokubanzi I-diameter ye-core yevalve inkulu, ngoko ke uhlobo (1) kunye (2) uhlobo lwe-Shs > Sfx  P1 impahla P2 Ukuba umthombo we-torsion usekwe njenge-f3 kunye ne-sliding force friction phakathi kwecandelo lokufaneleka kunye necandelo elimiselweyo ( Ngokwesiqhelo amandla okukhuhlana phakathi kwepiston kunye negumbi lepiston) isetwa njenge-fm ngokokunyanzeliswa kwamandla esihlalo sevalvu ngokuchasene ne-spool, imfuneko yokusebenza kocango oluphambili lokhuseleko kukuba: Kuphela kuxa amandla okudibana kwe-f1 esebenza. I-piston inkulu kancinane, amandla okusebenzisana f2 asetyenziswa kwi-spool ukuyityhalela phezulu, ukuxhathisa koxinzelelo lomthombo we-torsion ukuya kwi-spool ukuya phezulu ngokwesitulo sevalve f3 kunye namandla okukhuhlana phakathi kwecandelo lokufaneleka kunye necandelo elimiselweyo ( ngokuqhelekileyo i-sliding force force phakathi kwepiston kunye nepiston chamber) fm sum, ezizezi: Isango eliphambili lokhuseleko linokusebenza kuphela xa f1 > f2 f3 fm. Ngokwenza umsebenzi, ukwaliwa kocango oluphambili lokhuseleko kunokunxulumana nale miba mithathu ilandelayo: Enye icandelo lemidlalo yevalve yesango libambekile. Oku kunokuba ngenxa yofakelo olungekho ngqiqweni, ubumdaka kunye nentsalela yokungena ngaphakathi okanye ukhukuliseko lwamalungu; Ukuguda komphezulu wegumbi lepiston kubi, ukonakaliswa komphezulu, iigrooves kunye nezinye iintsilelo ezibangelwa ziinkozo ezinzima. Ngale ndlela, i-sliding force friction phakathi kwecandelo lokufaneleka kunye necandelo elisisigxina nelimileyo liya kwandiswa. Ngaphantsi kwesizathu sokuba ezinye iimfuno zihlala zingatshintshi, f1 I-diameter ye-valve yokhuseleko lwe-impulse incinci kakhulu, ekhokelela ekunciphiseni kwe-steam efakwe kwindawo yepiston yevalve yokhuseleko engundoqo, kunye namandla angonelanga f1 ukukhuthaza intshukumo ehlayo yepiston, oko kukuthi, f1 Oku kudla ngokuba yimeko xa ivalve yokhuseleko i-valve impulse security valve ine-placement, kuba ayiqwalaselwanga kakuhle kwaye ibangelwa. Ngokomzekelo, xa i-5 ye-furnace ilungiswa, iivalve ezimbini zokhuseleko lwe-hammer impulse zitshintshwa zibe zimbini ze-A49H-P54100VDg20 zokhuseleko lwe-pulse eziveliswe yi-Harbin Valve Factory. Le valve yokhuseleko isetyenziswa ngokubanzi kunye ne-A42H-P54100VDg125 yohlobo lwasentwasahlobo oluphambili. Yibeke kunye ne-Su imveliso Dg150 × 90 × 250 uhlobo oludala lwevalve yokhuseleko olusetyenziswayo, olu hlobo lwevalve yokhuseleko oluphambili kunye ne-A29H-P54100VDg125 uhlobo lwentwasahlobo yohlobo oluphambili lwevalve yokhuseleko inkulu kunobubanzi obuqhelekileyo kunye nokuqina buthathaka, kwiNombolo ye-5 isiphelo sobunzima bevalve yelizwe egcweleyo, qhuba isikhokelo sovavanyo ukuya kweyona ndawo iphambili yokwaliwa kwevalve. Okokugqibela, siya kudiliza ivalve yokhuseleko lwempembelelo, umkhono wesikhokelo kunye nespool ziyasebenzisana enye kwenye inxalenye yokwandiswa kwesithuba, ukuze kuphuculwe indawo yayo yonke ekhoyo, qhuba ukhokelo kwakhona umfuniselo oyimpumelelo. Ngoko ivalve yokhuseleko lwe-impulse kunye ne-valve engundoqo yokukhusela i-valve ayikho ngqiqweni, umyinge wedayamitha yegama iya kubangela ukwaliwa kwevalve yokhuseleko. 2.4, i-valve ye-impulse security valve back seat Shu i-valve engundoqo yokhuseleko ixesha lokulibaziseka ixesha lokuhlala lide kakhulu Izizathu eziphambili zezi mpazamo eziqhelekileyo zezi zilandelayo: Kwelinye icala, ubukhulu bokuvuza kwenxalenye yepiston yevalve yokhuseleko engundoqo, nangona Ivalve yokhuseleko lokubuyela umva esihlalweni, kodwa kukwakho uxinzelelo lomphunga kumbhobho kunye negumbi lepiston lisephezulu kakhulu, nyusa amandla episton ezantsi isenkulu kakhulu, ke khokelela kwisitulo esiphambili sokhuseleko emva kancinci, olu hlobo lokusilela okuqhelekileyo. ngaphezu kwe-A42Y-P5413.7VDg100 ivalve yokhuseleko, Ngenxa yolu hlobo lwevalve yokhuseleko lwepiston yegumbi itywina elungileyo. Indlela yokususa olu hlobo lokusilela ikakhulu ngokwandisa iqondo lokuvula ivalve yoncedo kunye nokwandisa idiameter yevalve ye-throttle ukusombulula, iqondo lokuvula levalve yokukhulula kunye nokwanda kwedayamitha yevalve ye-throttle ukushiya umphunga kwityhubhu ye-monopulser ngokukhawuleza. ukukhutshwa, ukuze kuncitshiswe uxinzelelo olusebenzayo kwipiston, ukuze isetyenziswe kwipiston ukuba ihambe phantsi amandla okuqhuba ngokukhawuleza, i-valve spool ekuqokeleleni izinto zomphunga kwibhokisi yokukhupha ukuze iqhube phezulu amandla okuqhuba kwaye ivalve engundoqo yokhuseleko ngokwayo i-torsion spring ukuqhubela phezulu phantsi kweempembelelo zoxinzelelo ngokukhawuleza emva kwesihlalo. Ngakolunye uhlangothi, ngenxa yokuba ukungqubuzana phakathi kwamacandelo ahambayo e-valve engundoqo yokhuseleko kunye nezixhobo ezisisigxina zikhulu kakhulu, ivalve yokhuseleko ephambili iya kukhokelela kwisitulo esicothayo, ukujongana nolu hlobo lwengxaki yeyona midlalo yokufaneleka kwevalve yokhuseleko. amacandelo kunye neendawo ezisisigxina zephaneli yokulawula i-gap yendibano ngaphakathi kobubanzi benkcazo.