Ubushushu obuphantsi ivelufa eludongeni ubukhulu, isihlalo, uyilo anti-static kunye nemigangatho yokuvelisa uhlalutyo lobushushu eliphantsi isicelo ivalufa ulwazi intshayelelo

Ubushushu obuphantsi ivelufa eludongeni ubukhulu, isihlalo, uyilo anti-static kunye nemigangatho yokuvelisa uhlalutyo lobushushu eliphantsi isicelo ivalufa ulwazi intshayelelo

Ubushushu obuphantsi bevalve eludongeni ubukhulu, isihlalo, uyilo anti-static kunye nohlalutyo imigangatho yokuvelisa
Ifanele ubushushu obuphakathi -40 ℃ ~ -196 ℃ ivalve ibizwa ngokuba ivelufa yobushushu obuphantsi. Iivalve ze-Cryogenic ezibandakanya ivalve yebhola ephantsi yobushushu, ivalve yesango kubushushu obuphantsi, ivalve ephantsi yobushushu obuphantsi, ivalve yokhuseleko, ivalve yokukhangela kwiqondo lobushushu eliphantsi, ivalve yebhabhathane, ivalve yenaliti kwiqondo lobushushu eliphantsi, ivalve ye-throttle, cryogenic. ivalve, njl., ikakhulu esetyenziselwa ethylene, igesi yendalo engamanzi (LNG) plant, itanki yegesi LPGLNG, yamkele isiseko kunye ne-goonhilly, izixhobo zokwahlula umoya, izixhobo zokwahlula iikhemikhali ze-oyile umsila, i-oksijeni yolwelo, initrogen engamanzi, i-argon yolwelo, icarbon dioxide ephantsi. itanki yokugcina ubushushu kunye nelori yetanki, uxinzelelo lwe-swing adsorption izixhobo zokuvelisa i-oksijini. Ulwelo oluphuma kwiqondo lobushushu elisezantsi njenge-ethylene, ioksijini elulwelo, i-hydrogen engamanzi, irhasi yendalo enyibilikisiweyo, iimveliso zepetroleum engamanzi, njl. Xa i-gasification, umthamo uyanda ngamakhulu amaxesha. Ukusetyenziswa kwevalve yobushushu obuphantsi, lawula ubushushu, ukuthintela, ukuvuza kunye nezinye iingozi ezifihlakeleyo.
Ulwakhiwo lwevalvu yobushushu obuphantsi obuqhelekileyo: iivalvu eziqhele ukusetyenziswa yivalve yesango lobushushu obuphantsi, ivalve yeglowubhu yobushushu obuphantsi, ivalve yokukhangela ubushushu obuphantsi, ivelufa yebhola ephantsi yobushushu, ivalve yebhabhathane lobushushu obuphantsi njalo njalo. Ivalve yesango lobushushu obuphantsi kunye nevalve yebhola ephantsi yobushushu kwigumbi eliphakathi kweplate yesango kunye nebhola, zibonelelwa ngomngxuma wokunceda uxinzelelo. Zonke iivalve ze-cryogenic zitywinwe ngokungafaniyo KWAYE zine-EDIUM FLOW cast okanye IMAKIWE EMZIMBA.
1. Ubuncinci bodonga lobunzima: ubuncinci bobunzima bomzimba kunye nesigqubuthelo seqokobhe levalve yobushushu obuphantsi, alwamkeli ukutyeba kodonga kumgangatho we-ASMEB16.34. Ubuncinci bodonga lwevalve yesango abuyi kuba ngaphantsi kwe-API600, ubuncinci bodonga lwevalve yeglowubhu abuyi kuba ngaphantsi kwe-BS1873, ubuncinci bodonga lwevalve yokutshekisha abuyi kuba ngaphantsi kobuncinci bodonga lwe-BS1868 kunye neminye imigangatho; Idayamitha yesiqu iya kuhambelana nemigangatho ye-API600 okanye ye-BS1873.
2. Isitulo seValve: ubushushu obuphantsi bevalve yemveliso yokutywina iperi ngokuhambelana nobushushu obusebenzayo kunye noxinzelelo lwegama lophakathi, lunokwenziwa njengentsimbi-PTFE itywina elithambileyo okanye intsimbi-yentsimbi eqinileyo yotywino, kodwa i-PTFE ilungele kuphela ubushushu bokusebenza indawo ephakathi iphezulu kune 73℃, kuba iqondo lobushushu eliphantsi kakhulu i-PTFE liya kuba brittle. Ngexesha elifanayo i-PTFE akufanele isetyenziswe kwinqanaba loxinzelelo olukhulu okanye olulingana ne-CL1500, kuba xa uxinzelelo ludlula i-CL1500, i-PTFE iya kuvelisa ukuhamba okubandayo, okuchaphazela isitywina sevalve. Isihlalo sevalve yesango lobushushu obuphantsi obutywiniweyo, ivalve yokujonga kunye nevalve yeglowubhu yamkela iCo-Cr-W ialloy eqinileyo ejonga ngqo kumzimba wevalvu. Yenza isihlalo kunye nomzimba uphela, uthintele ukuvuza okubangelwa yi-deformation ephantsi yokushisa kwesihlalo, uqinisekise ukuthembeka kwesitywina phakathi kwesihlalo kunye nomzimba.
3. I-Anti-static: isetyenziselwa ukutsha kunye nokuqhuma okuphakathi kobushushu obuphantsi, ukuba ivalve yokupakisha okanye i-gasket kunye netywina ye-PTFE kunye nezinye izinto zokugquma, ivalve evulekile kwaye ivale iya kuvelisa umbane ongatshintshiyo, kunye nombane ongatshintshiyo wokutsha kunye nokuqhuma okuphakathi kobushushu obuphantsi. yoyikeka kakhulu, ngoko ke, ivalve kufuneka iyilwe ngesixhobo esichasene nestatic.
Ukukhetha imathiriyeli yevalve yobushushu obuphantsi:
1. Umzimba wevalve kunye nekhava yokwamkela: LCB(-46℃), LC3(-101℃), CF8(304)(-196℃).
2. Isango: insimbi engenasici ejongene ne-cobalt-based hard alloy.
3. Isihlalo: intsimbi engatyiwayo ejongene ne-cobalt-based carbide.
4. Isiqu: 0Cr18Ni9.
Umgangatho wevalve yobushushu obuphantsi kunye nesakhiwo semveliso:
1. Uyilo: API6D, JB/T7749
2. Ukuhlolwa kweValve rhoqo kunye novavanyo: ngokwemigangatho ye-API598.
3. Ukuhlolwa kobushushu obuphantsi kwevalve kunye novavanyo: cinezela i-JB/T7749.
4. Imodi yokuqhuba: i-manual, i-bevel gear drive kunye nesixhobo sombane sombane.
5. Ifom yesihlalo sevalve: isihlalo sevalve sithatha isakhiwo se-welding, kwaye indawo yokutywina ijongene ne-cobalt-based carbide ukuqinisekisa ukusebenza kokutywinwa kwevalve.
6. Inkunzi yegusha ithatha isakhiwo se-elastic, kwaye umngxuma wokunciphisa uxinzelelo uyilwe ekupheleni kokungena.
7. Umzimba wevalvu evaliweyo kwicala elinye uphawulwe ngophawu lwecala lokuhamba.
8. Ivalve yebhola ephantsi yobushushu, ivalve yesango, ivalve yeglowubhu kunye nevalve yebhabhathane yamkele isakhiwo sentamo ende ukukhusela ukupakisha.
9. Umgangatho wevalve yebhola yobushushu: JB/T8861-2004.
Ulwazi lwesicelo sevalvu yobushushu obuphantsi
1. Iinketho zesicelo sokushisa okuphantsi
1. Abaqhubi basebenzisa iivalvu kwiindawo ezibandayo, ezifana ne-RIGS yeoli kwiilwandle ezimhlophe.
2. Abaqhubi basebenzisa iivalvu ukulawula ulwelo kumaqondo obushushu angaphantsi kweqondo lomkhenkce.

Okwesibini, yintoni echaphazela uyilo lwevalvu?
Ubushushu bunempembelelo ebalulekileyo kuyilo lwevalvu. Umzekelo, umsebenzisi unokuyidinga kwindawo ethandwayo efana noMbindi Mpuma. Okanye, inokusebenza kwiindawo ezibandayo ezinje ngeelwandlekazi zepolar. Zombini iimeko zinokuchaphazela ukuqina kwevalvu kunye nokuqina. Amalungu ezi valves abandakanya umzimba, ibhonethi, isiqu, i-stem seal, ivalve yebhola, kunye nesitulo. La macandelo akhula kwaye ankontileka kumaqondo okushisa ahlukeneyo ngenxa yokungafani kokwakheka kwezinto.
Okwesithathu, injineli iqinisekisa njani ukutywinwa kwevalve yobushushu obuphantsi?
Ukuvuza kubiza kakhulu xa umntu eqwalasela iindleko zokwenza igesi ibe yifriji kwasekuqaleni. Ikwayingozi. Inkxalabo enkulu ngetekhnoloji ye-cryogenic yinto enokwenzeka yokuvuza kwesihlalo. Abathengi bahlala bejongela phantsi ukukhula kweradial kunye nemigca yeziqu ngokunxulumene nomzimba. Abathengi banokuphepha ezi ngxaki ukuba bakhetha iivalve ezifanelekileyo. Kunconywa ukusebenzisa i-valve yokushisa ephantsi eyenziwe ngensimbi engenasici. Izinto eziphathekayo zijamelana kakuhle ne-gradients zokushisa ngexesha lokusebenza kunye neegesi ezinamanzi. Iivalve ze-Cryogenic ziya kutywinwa ngezinto ezifanelekileyo ukuya kwi-bar ye-100. Ukongezelela, i-BONNET EYONGEZELELWEYO YIMBONO ebaluleke kakhulu njengoko inquma ukuqina kwe-stem sealant.

Khetha ivalve yenkonzo yobushushu obuphantsi
Ukukhetha iivalve kwizicelo ze-cryogenic kunokuba nzima. Umthengi kufuneka aqwalasele iimeko enqanaweni nakwifektri. Ngapha koko, iipropathi ezithile ze-cryogenic fluids zifuna ukusebenza kwevalvu ethile. Ukukhetha okufanelekileyo kuqinisekisa ukuthembeka kwezityalo, ukukhuselwa kwezixhobo kunye nokusebenza ngokukhuselekileyo. Imakethi yehlabathi ye-LNG isebenzisa uyilo lwevalvu ezimbini ezinkulu.
I-1, i-baffle enye kunye ne-valve yokujonga i-baffle kabini
Ezi zivalo ziyinxalenye ebalulekileyo kwizixhobo zokunyibilikisa ngenxa yokuba zithintela umonakalo obangelwa kukuguqulwa kokuhamba. Izinto eziphathekayo kunye nobukhulu zizinto ezibalulekileyo zokuqwalaselwa kuba iivalve ze-cryogenic zibiza. Iziphumo zeevalvu ezingachanekanga zinokuba yingozi.
I-2, ivalve yokwahlula enxaxhileyo emithathu
Ezi zixhobo zivumela ivalve ukuba ivule kwaye ivale. Basebenza ngokukhuhlana okuncinci kunye nokukhuhlana. Ikwasebenzisa i-stem torque ukwenza ivalve ingangeni moya ngakumbi. Omnye wemicelimngeni yogcino lwe-LNG kukubanjiswa emngxunyeni. Kule mingxuma, ulwelo lunokwandiswa ngaphezu kwamaxesha angama-600. Ivalve yokwahlula yodwa ejikelezayo emithathu iyawuphelisa lo mngeni.
Isihlanu, kwimeko yegesi enokutsha kakhulu, njengegesi yendalo okanye i-oksijeni, xa kukho umlilo, i-valve kufuneka isebenze ngokuchanekileyo.
1. Ingxaki yobushushu
Utshintsho olumandla lobushushu lunokuchaphazela ukhuseleko lwabasebenzi kunye neefektri. Icandelo ngalinye le-cryovalve liyanda kunye neekontraka kumazinga ahlukeneyo ngenxa yokwakheka kwezinto ezahlukeneyo kunye nobude bexesha abaphantsi kwefriji. Enye ingxaki enkulu xa ujongene neefriji kukunyuka kobushushu obuvela kwindawo engqongileyo. Oku kunyuka kobushushu sizathu sokuba abavelisi bahlukanise iivalvu kunye nemigca. Ukongeza kuluhlu oluphezulu lobushushu, iivalve kufuneka zilwe nemingeni enzima. Kwi-helium enyibilikisiweyo, ubushushu berhasi enyibilikisiweyo buyehla ukuya kwi -270C.
2. Iingxaki zokusebenza
Kwelinye icala, ukuba iqondo lobushushu liyehla liye ku-zero, umsebenzi wevalvu uba ngumngeni omkhulu. Ivalve ye-cryogenic idibanisa umbhobho kunye negesi engamanzi kwindawo. Ikwenza oko kubushushu be-ambient. Isiphumo sinokuba ngumahluko weqondo lokushisa ukuya kwi-300C phakathi kombhobho kunye nokusingqongileyo.
3. Ukusebenza kakuhle
Umahluko wobushushu udala ukuhamba kobushushu ukusuka kwiindawo ezifudumeleyo ukuya ezibandayo. Inokuphazamisa umsebenzi oqhelekileyo wevalve. Kwakhona kunokunciphisa ukusebenza kakuhle kwenkqubo kwiimeko ezinzima. Oku kuxhalabisa ngokukodwa ukuba umkhenkce ubumba ekupheleni kokufudumala. Kodwa kwizicelo ze-cryogenic, le nkqubo yokufudumeza i-passive nayo isetyenziswe ngamabomu. Le nkqubo isetyenziselwa ukutywina isiqu. Ngokuqhelekileyo, isiqu sivalwe ngeplastiki. Ezi zixhobo azikwazi ukumelana namaqondo okushisa aphantsi, kodwa isitywina sesinyithi esisebenza kakhulu kumacandelo amabini, ahamba kakhulu kwicala elichaseneyo, kubiza kakhulu kwaye akunakwenzeka.
4. Uxinzelelo
Kukho ukwakhiwa koxinzelelo ngexesha lokuphathwa ngokuqhelekileyo kwefriji. Oku kungenxa yokwanda kobushushu be-ambient kunye nokwakheka komphunga okulandelayo. Unonophelo olukhethekileyo luyafuneka kuyilo lwe-valve/i-piping systems. Oku kuvumela uxinzelelo ukuba lwakheke.
5. Ingxaki yokutywina
Kukho isisombululo esilula kakhulu kule ngxaki. Uthatha iplastiki esetyenziselwa ukutywina isiqu kwindawo yobushushu obuqhelekileyo. Oku kuthetha ukuba i-stem sealant kufuneka igcinwe kumgama ukusuka kulwelo. Ihood ifana netyhubhu. Ukuba ulwelo lukhuphuka ngalo mbhobho, luya kufudumala kwiqondo lokushisa langaphandle. Xa ulwelo lufikelela kwi-stem sealer, ikakhulu kubushushu bendawo kunye negesi. I-hood iphinda ithintele umqheba ekubeni ngumkhenkce kwaye ungaphumeleli ukuqalisa.