I-valve yokushisa ephansi ukuqina kodonga, isihlalo, i-anti-static design kanye namazinga okukhiqiza ukuhlaziya isingeniso solwazi lwesicelo se-valve lokushisa eliphansi

I-valve yokushisa ephansi ukuqina kodonga, isihlalo, i-anti-static design kanye namazinga okukhiqiza ukuhlaziya isingeniso solwazi lwesicelo se-valve lokushisa eliphansi

Izinga lokushisa eliphansi lama-valve odongeni ubukhulu, isihlalo, i-anti-static design kanye nokuhlaziywa kwamazinga okukhiqiza
Ifanele izinga lokushisa eliphakathi nendawo -40 ℃ ~ -196 ℃ ivalve ibizwa nge-valve yokushisa ephansi. Ama-valve e-Cryogenic ahlanganisa i-valve yebhola eliphansi lokushisa, i-valve yesango ekushiseni okuphansi, i-valve yokushisa ephansi, i-valve yokuphepha, i-valve yokuhlola ekushiseni okuphansi ekushiseni okuphansi, ukushisa okuphansi kwe-butterfly valve, i-valve yenaliti ekushiseni okuphansi, i-valve yokushisa ephansi, i-cryogenic i-valve, njll., ikakhulukazi esetshenziselwa i-ethylene, isitshalo segesi yemvelo (LNG), i-gas LPGLNG ithangi, yamukela isisekelo ne-goonhilly, imishini yokuhlukanisa umoya, imishini yokuhlukanisa igesi yamakhemikhali kawoyela, i-liquid oxygen, i-liquid nitrogen, i-argon enguketshezi, i-carbon dioxide ephansi. ithangi lokugcina izinga lokushisa kanye neloli yethangi, i-pressure swing adsorption amadivaysi okukhiqiza umoya-mpilo. Uketshezi oluphumayo olunezinga lokushisa eliphansi njenge-ethylene, umoya-mpilo owuketshezi, i-hydrogen enguketshezi, igesi yemvelo ewuketshezi, imikhiqizo ye-petroleum ewuketshezi, njll., ayigcini nje ngokuvutha futhi iyaqhuma, kodwa futhi ifaka igesi lapho kushisa. Lapho i-gasification, umthamo uyanda izikhathi ezingamakhulu. Ukushisa okuphansi kwe-valve isicelo, lawula izinga lokushisa, ukuvimbela, ukuvuza nezinye izingozi ezifihliwe.
Isakhiwo se-valve yokushisa ephansi evamile: ama-valve okushisa aphansi avame ukusetshenziswa yi-valve yesango lokushisa eliphansi, i-valve yembulunga yokushisa ephansi, i-valve yokuhlola izinga lokushisa eliphansi, i-valve yebhola yokushisa ephansi, i-valve ye-butterfly ephansi yokushisa nokunye. I-valve yesango lokushisa eliphansi kanye ne-valve yebhola yokushisa ephansi ekamelweni eliphakathi kwepuleti lesango nebhola, kuhlinzekwa ngembobo yokunciphisa ingcindezi. Wonke ama-valve e-cryogenic avaliwe ngendlela eyodwa FUTHI ane-MEDIUM FLOW cast noma AMAKIWE EMZImbeni.
1. Ubukhulu obuncane bodonga: ubukhulu obuncane bomzimba kanye nesembozo segobolondo le-valve lokushisa eliphansi, akwamukeli ukujiya kodonga kuzinga le-ASMEB16.34. Ubukhulu obuncane bodonga lwevalvu yesango akumele bube ngaphansi kwe-API600, ubukhulu bodonga obuncane bevalvu yeglowubu akumele bube ngaphansi kwe-BS1873, ubukhulu bodonga obuncane bevalvu yesheke akumele bube ngaphansi kobukhulu obuncane bodonga be-BS1868 namanye amazinga; Ububanzi besiqu kufanele buhambisane namazinga e-API600 noma BS1873.
2. Isihlalo se-valve: izinga lokushisa eliphansi le-valve yomkhiqizo wokuvala i-pair ngokusho kwezinga lokushisa elisebenzayo kanye nokucindezela okuzisholo kwe-medium, ingaklanywa njengophawu lwensimbi-PTFE oluthambile noma uphawu oluqinile lwensimbi-metal, kodwa i-PTFE ifaneleka kuphela izinga lokushisa lokusebenza okuphakathi kungaphezulu kuka-73℃, ngoba izinga lokushisa eliphansi kakhulu i-PTFE lizoba brittle. Ngesikhathi esifanayo i-PTFE akufanele isetshenziselwe izinga lokucindezela elikhulu noma elilingana ne-CL1500, ngoba lapho ingcindezi idlula i-CL1500, i-PTFE izokhiqiza ukugeleza okubandayo, okuthinta uphawu lwe-valve. Isihlalo se-valve yesango lokushisa eliphansi elivalwe ngokuqinile, i-valve yokuhlola kanye ne-valve yembulunga isebenzisa i-Co-Cr-W ingxubevange eqinile evelela ngqo emzimbeni wevalvu. Yenza isihlalo nomzimba uwonke, vimbela ukuvuza okubangelwa ukushisa okuphansi kwesihlalo, qinisekisa ukuthembeka kophawu phakathi kwesihlalo nomzimba.
3. I-Anti-static: isetshenziselwa ukushisa okuphansi nokuqhuma okuphansi kwezinga lokushisa, uma i-valve yokupakisha noma i-gasket kanye ne-seal ye-PTFE nezinye izinto zokuvikela ukushisa, i-valve evulekile futhi ivale izokhiqiza ugesi ongaguquki, kanye nogesi omile endaweni yokushisa evuthayo kanye neziqhumane. kubi kakhulu, ngakho-ke, i-valve kufanele iklanywe nge-anti-static device.
Ukukhetha impahla ye-valve yezinga lokushisa eliphansi:
1. Umzimba we-valve nekhava okutholwayo: LCB(-46℃), LC3(-101℃), CF8(304)(-196℃).
2. Isango: insimbi engagqwali ephuma ku-cobalt eqinile ingxubevange.
3. Isihlalo: insimbi engagqwali eveza i-cobalt-based carbide.
4. Isiqu: 0Cr18Ni9.
I-valve yezinga lokushisa eliphansi nesakhiwo somkhiqizo:
1. Idizayini: API6D, JB/T7749
2. Ukuhlolwa nokuhlolwa kwe-valve: ngokuya nge-API598 ejwayelekile.
3. Ukuhlolwa kwezinga lokushisa eliphansi le-valve: cindezela i-JB/T7749.
4. Imodi yokushayela: imanuwali, i-bevel gear drive kanye nedivayisi yokushayela kagesi.
5. Ifomu lesihlalo se-valve: isihlalo se-valve samukela isakhiwo se-welding, futhi indawo yokuvala ingaphezulu kwe-cobalt-based carbide ukuqinisekisa ukusebenza kokuvala kwe-valve.
6. Inqama ithatha isakhiwo esinwebekayo, futhi imbobo yokukhulula ingcindezi yakhiwe ekugcineni kokungena.
7. I-valve yendlela eyodwa evalwe uphawu imakwe ngophawu lwesiqondiso sokugeleza.
8. I-valve yebhola yokushisa ephansi, i-valve yesango, i-valve yembulunga kanye ne-butterfly valve yamukela isakhiwo sentamo ende ukuvikela ukupakisha.
9. Izinga lokushisa le-valve yebhola: JB/T8861-2004.
Isingeniso solwazi lwesicelo se-valve lokushisa eliphansi
1. Izinketho zesicelo sokushisa okuphansi
1. Abasebenzisa ama-valve ezindaweni ezibandayo, njengama-RIGS kawoyela ezilwandle ezishisayo.
2. Ama-opharetha asebenzisa ama-valve ukulawula uketshezi emazingeni okushisa angaphansi kweqhwa.

Okwesibili, yini ethinta ukwakheka kwe-valve?
Izinga lokushisa linomthelela obalulekile ekwakhiweni kwe-valve. Isibonelo, umsebenzisi angase ayidinge endaweni edumile njenge-Middle East. Noma, ingase isebenze ezindaweni ezibandayo njengolwandle olushisayo. Zombili lezi zimo zingathinta ukuqina kwe-valve nokuqina. Izingxenye zala ma-valve zihlanganisa umzimba, ibhonethi, isiqu, i-stem seal, i-valve yebhola, nesihlalo. Lezi zingxenye ziyakhula futhi zinciphe emazingeni okushisa ahlukene ngenxa yokuhluka kokwakheka kwezinto.
Okwesithathu, unjiniyela uqinisekisa kanjani ukuvalwa kwe-valve yezinga lokushisa eliphansi?
Ukuvuza kubiza kakhulu uma umuntu ecabangela izindleko zokwenza igesi ibe isiqandisi kwasekuqaleni. Kuyingozi futhi. Ukukhathazeka okukhulu ngobuchwepheshe be-cryogenic ukuthi kungenzeka ukuvuza kwesihlalo. Abathengi bavame ukubukela phansi ukukhula kwe-radial kanye nomugqa weziqu maqondana nomzimba. Abathengi bangagwema lezi zinkinga uma bekhetha ama-valve afanele. Kunconywa ukusebenzisa i-valve yokushisa ephansi eyenziwe ngensimbi engagqwali. Izinto zibhekana kahle nama-gradients okushisa ngesikhathi sokusebenza ngamagesi ane-liquefied. Ama-valve e-Cryogenic azovalwa ngezinto ezifanele kuze kufike kumabha ayi-100. Ukwengeza, I-BONNET EYANDISIWE iyisici esibaluleke kakhulu njengoba inquma ukuqina kwe-stem sealant.

Khetha i-valve yesevisi yezinga lokushisa eliphansi
Ukukhetha ama-valve wezinhlelo zokusebenza ze-cryogenic kungaba yinkimbinkimbi. Umthengi kufanele acabangele izimo zomkhumbi kanye nasembonini. Ngaphezu kwalokho, izakhiwo ezithile zoketshezi lwe-cryogenic zidinga ukusebenza kwe-valve ethile. Ukukhetha kahle kuqinisekisa ukwethembeka kwezitshalo, ukuvikelwa kwemishini nokusebenza okuphephile. Imakethe ye-LNG yomhlaba wonke isebenzisa imiklamo emibili emikhulu yama-valve.
1, i-baffle eyodwa kanye ne-valve yokuhlola i-baffle kabili
Lawa ma-valve ayizingxenye ezibalulekile emishinini yokuncibilikisa uketshezi ngoba avimbela umonakalo obangelwa ukuguqulwa kokugeleza. Izinto ezibonakalayo nosayizi yizinto ezibalulekile ezicatshangelwayo ngoba ama-valve e-cryogenic ayabiza. Imiphumela yamavalvu angalungile ingaba yingozi.
2, i-valve yokuhlukanisa i-rotary tight bias emithathu
Lawa ma-offset avumela i-valve ukuthi ivuleke futhi ivale. Basebenza ngokungqubuzana okuncane kakhulu nokungqubuzana. Iphinde isebenzisa i-stem torque ukwenza i-valve ingangeni umoya. Enye yezinselelo zokugcinwa kwe-LNG ukuvaleleka emgodini. Kulezi zimbobo, uketshezi lunganwetshwa izikhathi ezingaphezu kuka-600. Ivalvu yokuhlukanisa eqinile enama-rotary amathathu iqeda le nselele.
Okwesihlanu, esimweni segesi evutha kakhulu, njengegesi yemvelo noma umoya-mpilo, uma kwenzeka umlilo, i-valve kufanele isebenze ngendlela efanele.
1. Inkinga yezinga lokushisa
Ukushintsha okukhulu kwezinga lokushisa kungathinta ukuphepha kwabasebenzi nezimboni. Ingxenye ngayinye ye-cryovalve iyakhula futhi yenza izinkontileka ngamanani ahlukene ngenxa yokwakheka okuhlukile kwezinto kanye nobude besikhathi ezifakwa ngaphansi kwesiqandisi. Enye inkinga enkulu lapho usebenza neziqandisi ukwanda kokushisa okuvela endaweni ezungezile. Lokhu kukhula kokushisa kuyisizathu sokuthi abakhiqizi bahlukanise ama-valve nemigqa. Ngaphezu kwebanga lokushisa eliphezulu, ama-valve kufanele abhekane nezinselele ezinkulu. Nge-helium ewuketshezi, izinga lokushisa legesi eliwuketshezi lehla liye ku-270C.
2. Izinkinga zokusebenza
Ngokuphambene, uma izinga lokushisa lehlela ku-zero, umsebenzi we-valve uba inselele kakhulu. I-valve ye-cryogenic ixhuma ipayipi negesi eliwuketshezi endaweni ezungezile. Ikwenza lokho ezingeni lokushisa elizungezile. Umphumela ungaba umehluko wokushisa ofinyelela ku-300C phakathi kwepayipi nendawo ezungezile.
3. Ukusebenza kahle
Ukwehluka kwezinga lokushisa kudala ukugeleza kokushisa kusuka ezindaweni ezifudumele kuya ezibandayo. Ingaphazamisa ukusebenza okuvamile kwe-valve. Kungase futhi kunciphise ukusebenza kahle kwesistimu ezimeni ezimbi kakhulu. Lokhu kuyakhathaza ikakhulukazi uma iqhwa lakha ekugcineni okufudumele. Kodwa ezinhlelweni ze-cryogenic, le nqubo yokushisa engenzi lutho nayo isetshenziswa ngamabomu. Le nqubo isetshenziselwa ukuvala isiqu. Ngokuvamile, isiqu sivalwa ngepulasitiki. Lezi zinto azikwazi ukumelana namazinga okushisa aphansi, kodwa uphawu lwensimbi olusebenza kakhulu lwezingxenye ezimbili, ezihamba kakhulu ngezindlela eziphambene, zibiza kakhulu futhi cishe akunakwenzeka.
4. Ukucindezeleka
Kukhona ukunqwabelana kokucindezela phakathi nokuphathwa okuvamile kwesiqandisi. Lokhu kungenxa yokwanda kokushisa okuzungezile kanye nokwakheka kwesitimu okulandelayo. Ukunakekelwa okukhethekile kuyadingeka ekwakhiweni kwama-valve/amapayipi amasistimu. Lokhu kuvumela ukucindezeleka ukwakha.
5. Inkinga yokuvala uphawu
Kukhona isixazululo esilula kakhulu kule nkinga. Uthatha ipulasitiki esetshenziselwa ukuvala isiqu endaweni yokushisa evamile. Lokhu kusho ukuthi i-stem sealant kufanele igcinwe kude noketshezi. Ihood ifana neshubhu. Uma uketshezi lukhuphuka ngalelipayipi, lizofudumala kusukela ekushiseni kwangaphandle. Lapho uketshezi lufika kusivalo se-stem, ngokuyinhloko kuba kuzinga lokushisa elizungezile kanye negesi. Ihood iphinde ivimbele isibambo ukuthi singaqandi futhi sihluleke ukuqala.