Eli phepha lichaza iivalveUkukhethwa kwenkqubo yombhobho wokufudumeza womnatha kunye neenzuzo, umgaqo osebenzayo kunye nokugcinwa kweivalve yebhola, obonelela ngexabiso elibalulekileyo lokubhekisela kwisicwangciso somthombo wokushisa, ukuyila, ukukhethwa kwezixhobo, ukusebenza kunye nokuveliswa, ukugcinwa kwezixhobo, kunye nokuguqulwa kunye nokuphuculwa kwenkqubo yokufudumala.
Kwiminyaka yakutshanje, kunye nophuhliso loqoqosho kunye nengqalelo yabantu kwi-carbon ephantsi yokhuseleko lokusingqongileyo, ulawulo lweeprojekthi zenkungu kunye nokugcina amandla zenze ukuba amashishini okufudumala aqhubele phambili ngokuthe ngcembe abhekiselele kwindlela esemgangathweni, yenzululwazi kunye ne-energy-based. , eyanciphisa kakhulu iindleko zokufudumeza kunye nokuphucula umgangatho weenkonzo zokufudumeza.Okwangoku, ukusetyenziswa kwamandla eTshayina kuye kwaba ukukhula okuphezulu, ukusetyenziswa kwamandla aphezulu, imeko yongcoliseko oluphezulu, ukugcinwa kwamandla kuyafuneka.Ukwakhiwa kunye nophuhliso lokufudumeza okuphakathi edolophini yindlela efanelekileyo yokugcina amandla, ukunciphisa ukungcoliseka kwendalo kunye nokufezekisa uphuhliso oluzinzileyo.
Okwangoku, uninzi lwamashishini obushushu athathela ingqalelo iindleko zotyalo-mali, lusasebenzisa iindlela zokuvelisa ngasemva iminyaka emininzi, kunye nokucwangciswa komthombo wobushushu okungenangqiqo, iiparamitha zokusebenza ezingafanelekanga, iindlela zolawulo lwasemva kunye nokunqongophala kwabasebenzi abaqeqeshiweyo kunye nobugcisa. , ethintela uphuhliso lwezenzululwazi kwishishini lokufudumeza.Kwinkqubo yokufudumala, ukhetho olufanelekileyo lwezixhobo zokulawula ulwelo kunye noyilo lokucwangciswa komthombo wokushisa lube ngumsebenzi ophambili weshishini ngalinye lokufudumala.Iivalvesesinye sezona zixhobo ziqhelekileyo kwi-thermal system.Umgangatho weivalvekwaye nokubaivalveikhethwe ngokufanelekileyo ngokweempawu zeivalveiya kudlala indima eqinisekileyo kumgangatho wokufudumeza.
Iivalvelicandelo lolawulo kwinkqubo yezandyondyo ehambisa ulwelo, enemisebenzi yokuqhawula, ukulawula, ukukhokela, ukuthintela i-countercurrent, uxinzelelo lokuzinzisa, ukucima, ukulawula ukuhamba okuphakathi kunye nokunye.Kwinkqubo yokufudumala, ukufudumeza okubangelwa umgangatho weivalveayikho kumgangatho, kwaye izikhalazo zomsebenzisi kwinkampani yokufudumeza ziqhelekile.Ngenxa yokuba iivalve zibekwe emthonjeni, i-phenomenon yokubaleka, ukuwa, ukuvuza kunye nokuvuza akulula ukufumaneka.Ngokuqhelekileyo, inokufumaneka kuphela xa umsebenzisi ekhalaza, ukufunyanwa kwe-Roving kunye nezixhobo zonakalisiwe.Ukuba kukho ingxaki, ayinakufunyanwa ngexesha.Akuyona ingxaki encinci, enempembelelo ekukhuselekeni kokusebenza kwemibhobho, kodwa ibangela inkunkuma yomthombo wokushisa.Yintloko ebuhlungu kumagcisa ashushu.Kwamanye amashishini okufudumala, kukho ukungaqondi kakuhle ekukhetheni i-valve.Banikela ingqalelo kuphela kwixabiso lezixhobo okanye bebesebenzisa imowudi yezixhobo zokufudumeza zangaphambili.Ukunqongophala kwengqondo entsha, ukungabikho kolwazi lobuchwephesha beempawu zevalvu kunye nokugcinwa.Ayicingi ngeendleko eziphezulu zokugcina ezibangelwa yingxaki yomgangatho wevalvu.
Iivalvu ezisetyenziswa ngokuqhelekileyo kwimibhobho ye-thermalivelufa butterfly, ivalve yesango, ivalve yeglowubhu, khangela ivalvekwaye nangokunjalo.Ezi zivalo zineenzuzo zazo, kodwa nazo zineentsilelo zazo, ezisetyenziswa ngokubanzi kwinkqubo yothungelwano lobushushu, kunye nomyili ekukhetheni uhlobo, ngokuqhelekileyo kunye nesicelo esisebenzayo esidityanisiweyo kunye neenzuzo kunye nokungalunganga kwezi zivalo zokucwangciswa koyilo olufanelekileyo.Masiqonde iingenelo kunye nokungalunganga kwezi zivalo,ivelufa butterflyyenye yevalve esetyenziswa kakhulu, indawo yofakelo incinci, ixabiso eliphantsi, lingasetyenziselwa ukulungisa ukuhamba kwe-valve yebhabhathane eliphakathi, elithambileyo elithambileyo ngenxa yezithintelo zezinto zerabha, ayinakusetyenziswa kwiimeko zobushushu obuphezulu, kutsha nje. iminyaka,intsimbi ezintathu eccentric butterfly valveisicelo, phucula kakhulu iivelufa butterflykuluhlu lobushushu isicelo, Noko ke, ipleyiti butterfly ihlanjwe medium ixesha elide, okubangela deformation umphezulu yokutywina, nto leyo eya kubangela umonakalo itywina kwaye kwakhona kuchaphazela ukuhamba medium.Ngokuqhelekileyo isetyenziswa kwiimeko apho iimfuno zokutywinwa zingekho ngqongqo.Ngenxa yokuba ukuxhathisa ulwelo lweivalve yesangoincinci, indlela yokuhamba ye medium ayithintelwa, xa umphezulu wokutywina uvulwe ngokupheleleyo, ukhukuliseko lwendawo ephakathi luncinci kunolo lweivalve yeglowubhu, kodwa ubungakanani kunye nokuphakama kokuvula kweivalve yesangozinkulu, kwaye isithuba sokufakela sikhulu.Kwinkqubo yokuvula, ukungqubuzana okuhambelanayo kwendawo yokutywinwa kulula ukubangela into yokufakela, kwaye ukugcinwa kuyinkathazo ngakumbi, echaphazela ukusetyenziswa kobuninzi obukhulu kwinkqubo yokufudumala.Iivalve yeglowubhuikwasetyenziswa ngokuqhelekileyo kwinkqubo yevalve, ukuphakama kokuvula kuncinci, ukutshintshela ngokukhawuleza, indawo yokutywina kwinkqubo yokuvula kunye nokuvala ngokubanzi akukho sliding isalamane, ayiyi kubangela imikrwelo, ukugcinwa kukwalula ngakumbi, kodwa into engalunganga kukutshintsha ukuhamba kwe-medium, ukwandisa ukuxhathisa ulwelo, ubude bemilo bukhulu kakhulu, i-diameter ye-valve yeglowubhu jikelele ayikho mkhulu kune-DN250 uxinzelelo oluphezulu alukho ngaphezu kwe-DN150.
Ivalve yebholawazalwa ngo-1950, kunye nophuhliso olukhawulezayo lwenzululwazi kunye nobuchwepheshe, ukuphuculwa okuqhubekayo kwenkqubo yemveliso kunye nesakhiwo semveliso, sele isetyenziswe ngakumbi nangakumbi kwinkqubo yokufudumala kwiminyaka yamuva, ukusebenza kwayo okuphezulu kungaphaya kokufikelela kwezinye izivalo. , ayinakuxhathisa ulwelo, ubunzima obukhanyayo, ukusebenza kokutywina kokuvuza, ukuvula kunye nokuvala iswitshi ngokukhawuleza, indawo yokutywina ayigutyulwa nguphakathi, Ubomi benkonzo ende kunye nezinye iingenelo, kwaye ufumana inkoliseko yokukhethwa kwevalvu kumashishini.Ngokukodwa, i-valve yebhola edibeneyo isetyenziswe ngokubanzi kwinethiwekhi yombhobho wokufudumeza phakathi kwiminyaka emibini edlulileyo.Izibonelelo zayo ezizodwa zokuvuza kweqanda ngaphakathi nangaphandle, ukungcwatywa ngokuthe ngqo, ukuwelda kwemibhobho ngaphandle koxinzelelo, kunye neminyaka engama-20 yokugcinwa simahla, ukuya kwinqanaba elikhulu, zigcine iindleko zofakelo kunye neendleko ezinxulumene nokugcinwa kwamashishini okufudumeza, kwaye ziye zamkelwa ulawulo oluphezulu lwenkampani yokufudumeza.Nangona kunjalo, indlela yokwenza ukugcinwa kwemihla ngemihla kunye nokulungiswa kweevalve ekusebenzeni kwethu kuye kwaba ngumsebenzi ongenakuhoywa ngamashishini okufudumala.Ngokuqonda umgaqo wokusebenza kunye neempawu zemveliso ye-valve, kunye nendlela yokusebenza kunye nokucombulula ingxaki, inkqubo yokusebenza yemveliso efanelekileyo inokuqulunqwa kwimveliso eqhelekileyo yenkampani ukuqinisekisa ukusebenza ngokukhuselekileyo kwezixhobo ze-valve.
Umgaqo wokutywina osebenzayo wevalve yebhola ye-thermal welding :
I-welding ye-thermal esetyenziswa ngokuqhelekileyoivalve yebholakunye nevalve yebhola yeflange eqhelekileyo ikakhulu yenziwe ngumzimba wevalve, isihlalo, ibhola, isiqu kunye nesixhobo sokuhambisa.Umsebenzi ophambili kukudibanisa kunye nokunqumla umjelo wolwelo kumbhobho.Iivalve yebholauqaphela umsebenzi wokutshintsha ngokuqhuba ibhola ukujikeleza i-90 degrees ngesixhobo sokudlulisa.Iifom eziphambili zesakhiwo zahlulwe zibe yibhola edadayo kunye nesakhiwo sebhola esisigxina.
1.Isakhiwo sebhola edadayo:Ibhola yeivalve yebhola edadayoIyakwazi ukudada kumzimba wevalve, phantsi koxinzelelo lwendlela yolwelo, ibhola icinezelwe ngokuqinileyo kwindawo yokuphuma yesihlalo sevalve yokutywina, eya kwenza itywina elinye, isitywina sesihlalo sangaphambili asiqinisekiswanga.ivalve yebholaluphawulwa ngolwakhiwo olulula, ukwenziwa lula, ukutywinwa kokusebenza kwelinye icala kulungile, ngakumbi ivalve yebhola edityanisiweyo ngokupheleleyo kwidiskhi yoyilo lwesakhiwo sentwasahlobo, ukuze itywina lifikelele kwinqanaba elingqongqo, umphezulu wokutywina ukumelana nomlinganiselo omkhulu wokutywina, ukuvulwa kunye i-torque yokuvala iya kwanda, Isebenza ngokubanzi kwiivalvu ezinobubanzi obungaphantsi kwe-DN300.
2.Isakhiwo sebhola esisigxina:Ibhola yesakhiwo esisisigxina sine-shaft ejikelezayo ephezulu nangaphantsi, kwaye inxalenye ephantsi yebhola ifakwe kwi-bearing, egxininiswe yi-stem ye-valve ephantsi, kwaye inxalenye ephezulu idibene ne-valve stem.Ibhola inokujikeleza kuphela ecaleni kwe-axis ethe nkqo yetshaneli yevalvu, kwaye ayikwazi ukuya kwelinye icala njengeivalve yebhola edadayo.Ngoko ke, xa iivalve yebhola esisigxinaisebenza, uxinzelelo lolwelo oluphambi kwevalve lunokudluliselwa kuphela kwisiqu sevalve kunye nokuthwala, kwaye aluyi kuvelisa uxinzelelo kwisihlalo sevalve.Ngoko ke, isihlalo sevalve asiyi kuphazamiseka ngokutshintsha koxinzelelo kwipayipi, ukusebenza kokutywinwa kulungile, kwaye ubomi benkonzo bude.Isitulo sevalvu yevalve esisigxina siyadada, kwaye isitulo sevalve siya kusebenzisa uxinzelelo lwasemva kwentwasahlobo kunye noxinzelelo kumbhobho ukuhlanganisa ibhola ukwenza itywina elithembekileyo.
Ukugcinwa kwevalve ye-Thermal ibhola kunye nolawulo lwetekhnoloji:
Usetyenziso oluchanekileyo lofakelo kunye nolondolozo lweivalve yebholaibaluleke kakhulu, kwaye ikwangumxholo ekufuneka ishishini lokufudumeza libhekiselele kuwo ekuqulunqweni kwenkqubo yokusebenza.Ulawulo lwezenzululwazi kunye nokugcinwa kweivalve yebholangexesha lokwakha alinakuqinisekisa kuphela ukhuseleko, kodwa linciphisa iindleko zexesha lokwakha kunye nokulawula ukusebenza.Ikakhulu ingqalelo kule miba ilandelayo:
I-1. Ukusebenzisa indlela echanekileyo yokulayisha kunye nokukhulula i-valve, ukuphepha umonakalo womatshini kwi-valve, ukuphakamisa i-valve, i-valve yokuphakamisa i-valve ayikwazi ukubotshwa kwi-valve stem okanye i-actuator yokuphakamisa, njengomsebenzi ongekho mthethweni, kuya kubangela i-valve. ukugotywa kwesikhondo, ukusilela kokutywinwa kwesikhondo sevalve kunye nomonakalo webhokisi yeinjini yomoya.
2.Ngaphambi kokuba i-valve ihambe kumzi-mveliso, kuyimfuneko ukutywina ipleyiti eyimfama okanye ukuvala kuzo zombini iziphelo zevalve ukuze ugweme amanzi, isanti, kunye nezinye izinto ezingcolileyo kwisiza zingene kwigumbi levalve ngexesha lokuthutha, okuya kubangela umonakalo kunye nokubola. kwitywina.
3. Kwindawo yolwakhiwo, isivalo kufuneka sibekwe ngokucocekileyo, asikwazi kubekwa ngokungenamkhethe, siya kubangela ivalve yokuvuthela ivelufa okanye ivalve yegrisi iqhawuke kunye nomonakalo.
4.I-welding epheleleyoivalve yebholaNgaphambi kokwakhiwa kwe-welding, kufuneka uqinisekise ivalve kwindawo evulekileyo ye-welding, Gwema umonakalo webhola obangelwa yi-welding spatter, bhala indawo yokutywina, ubushushu be-welding yesihlalo sevalve ilawulwa kwii-140 degrees.
5.Emva kovavanyo lwe-hydrostatic, amanzi kwigumbi le-valve kufuneka ahlanjululwe ukuze akhusele ukubola kunye ne-icing.
Iingcebiso zolawulo kunye nokugcinwa kulondolozo lwemihla ngemihla ekusebenzeni:
1.Ngombhobhoiivalve zebholaye-API6D, jonga rhoqo ukusebenza kokutywinwa kweevalvu, kwaye ujonge ngevalve yokuvuthela.Ukuba kukho ukuvuza kwangaphakathi, kusetyenzwa ngokwenkqubo
2.Ngokokuphindaphinda komsebenzi wevalvu, umlinganiselo othile wegrisi utofwa kwisitulo sevalvu.Ngokubanzi, isixa esifanelekileyo segrisi sitofwa emva komsebenzi wevalvu, kwaye inani lenaliti nganye yi-1/8 yenkqubo yokutywina.Injongo yokwenza oku kukuphepha ukungcola okukumbhobho ukungena kumqolo ongasemva wesihlalo sevalve ngowona mgangatho mkhulu, okuchaphazela intshukumo yesitulo sevalve, okukhokelela ekungaphumeleli kokutywinwa, ngelixa uqinisekisa ukuba umphezulu wokutywina uhlala ukwindawo yokutywina. ukuthambisa urhulumente kunye nokwandisa ubomi benkonzo.
3. Kwiivalvu ezinemisebenzi embalwa, umsebenzi wokuvula nokuvalwa kufuneka kwenziwe kanye ngonyaka, kwaye umlinganiselo othile wegrisi kunye nolwelo lokucoca kufuneka utofwe, nto leyo enokuthintela ibhola kunye nesitulo seglue kwaye inokuphepha ukugaya okomileyo Ibhola iyasebenza kwaye inciphisa itorque esebenzayo yevalve.
4. Ivalve yebholakufuneka igcinwe ngaphambi kobusika, igxininise ekukhupheni amanzi ngaphakathi kwegumbi le-valve kunye namanzi e-actuator ukuphepha iqhwa ebusika kunye nokuchaphazela ukusetyenziswa komsebenzi.
5.Yongeza igrisi engagugiyo kwisixhobo sokuvuselela ivalve worm rhoqo ngonyaka, jonga rhoqo ivalve stem seal, susa umhlwa, kwaye wenze ukhuseleko lwangaphandle.
Ukuze kuphuculwe ukuthembeka kwe-valve kunye nokwandisa ubomi benkonzo ye-valve, kubaluleke kakhulu ukwenza umsebenzi omhle ekugcinweni kwangaphambili kunye nokulawula.Kuyimfuneko ukomeleza ulongamelo logcino phambi kokuba isixhobo sevalvu sishiye umzi-mveliso kunye nolawulo kuthutho, kwaye someleze ulondolozo phambi kwendawo yofakelo lwezixhobo kunye nokugadwa kwinkqubo yofakelo.Ngaphambi kofakelo, kuyimfuneko ukwenza uvavanyo lwe-hydraulic, ukufumana iingxaki kwangoko kwaye ujongane neengxaki ngexesha.Ukuqinisa uqeqesho lobuchwephesha, uphucule izakhono kunye nomgangatho wabasebenzi bolondolozo abaqeqeshiweyo, kunye nokufezekisa ukugcinwa kwenzululwazi, okusemgangathweni kunye nokukhuselekileyo.Guqula ingqikelelo, uqhube ulawulo lolondolozo lothintelo, wenze izicwangciso zokugcinwa kwamaxesha ngamaxesha kwaye uziphumeze ngokungqongqo.Yenza umsebenzi omhle ekusebenzeni okukhuselekileyo kwenkqubo yokufudumala ukuqinisekisa umgangatho wokufudumala.
Ixesha lokuposa: Feb-14-2023