Valavu yotsika yotsika yokhala ndi chivundikiro cha valve yayitali yapakhosi pazifukwa za kusankha kwa ma valve otsika kutentha kumafuna kusamala

Valavu yotsika yotsika yokhala ndi chivundikiro cha valve yayitali yapakhosi pazifukwa za kusankha kwa ma valve otsika kutentha kumafuna kusamala

Ma valve otsika otsika amaphatikizapo valavu yochepetsera kutentha kwadzidzidzi, valavu yochepetsera kutentha, valavu yotsika kutentha, LNG yotsika kutentha valavu, NG ** yotsika kutentha valavu, ndi zina zotero, zomwe zimagwiritsidwa ntchito mu matani 300,000 a ethylene, gasi wachilengedwe wonyezimira. ndi zina mankhwala chomera. The linanena bungwe madzi otsika kutentha sing'anga monga ethylene, madzi okosijeni, madzi wa hydrogen, liquefied gasi, liquefied mafuta mafuta, etc., osati kuyaka ndi kuphulika, komanso gasification pamene Kutentha mmwamba. Pamene gasification, voliyumu amakula kambirimbiri.
Zifukwa za chivundikiro cha khosi lalitali cha ma valve otsika kutentha
Oyenera kutentha kwapakati -40 ℃ ~ -196 ℃ valavu amatchedwa valavu yotsika, ndipo valavu yamtunduwu nthawi zambiri imagwiritsa ntchito chivundikiro cha khosi lalitali.
Valavu yotsika kutentha imaphatikizapo valavu yochepetsera kutentha kwadzidzidzi, valavu yochepetsera kutentha, valavu yoyang'ana kutentha, LNG yotsika kutentha, NG valve yotsika kutentha, ndi zina zotero, zomwe zimagwiritsidwa ntchito makamaka mu matani 300,000 a ethylene, gasi wachilengedwe wokhala ndi liquefied ndi chomera china chamankhwala. The linanena bungwe madzi otsika kutentha sing'anga monga ethylene, madzi okosijeni, madzi wa hydrogen, liquefied gasi, liquefied mafuta mafuta, etc., osati kuyaka ndi kuphulika, komanso gasification pamene Kutentha mmwamba. Pamene gasification, voliyumu amakula kambirimbiri
Chophimba cha khosi lalitali chimafotokozedwa chifukwa:
(1) Chophimba cha valve chautali cha khosi chimakhala ndi ntchito yotetezera bokosi lotsika la kutentha kwa valve, chifukwa kusindikizidwa kwa bokosi lonyamula ndi chimodzi mwa fungulo la valve yotsika kutentha. Ngati stuffing bokosi kuchucha, izo kuchepetsa kuzirala tingati kumabweretsa gasification wa liquefied mpweya. Pa kutentha kochepa, ndi kuchepa kwa kutentha, kusungunuka kwa kulongedza kumachepa pang'onopang'ono, ndipo ntchito yowonetsera kutayikira imachepa. Chifukwa cha kutayikira kwa media, kulongedza ndi tsinde la valve zimawumitsidwa, zomwe zimakhudza magwiridwe antchito a valve. Nthawi yomweyo, zonyamula zamkati zimayamba chifukwa cha kusuntha kwa tsinde la valavu mmwamba ndi pansi, zomwe zimayambitsa kutayikira kwakukulu. Chifukwa chake, ndikofunikira kuwonetsetsa kuti kutentha kwa maziko a filler kuli pamwamba pa 8 ℃.
(2) Chivundikiro cha valavu cha khosi lalitali ndi chosavuta kukulunga zinthu zoziziritsa kuzizira kuti chiteteze kutayika kwamphamvu kwa valavu yotsika.
(3) Kupanga kwa khosi lalitali la valve yotsika kutentha kumathandizira kusinthika mwachangu kwa zigawo zazikulu za valve kupyolera mu kuchotsa chophimba cha valve. Popeza mapaipi ndi ma valve mu gawo lozizira la zida nthawi zambiri amaikidwa mu 'cold box', chivundikiro cha valve ya khosi lalitali chikhoza kufalikira kudzera pa khoma la 'cold box'. KUSINTHA chigawo chachikulu cha valve, ingochotsani chivundikiro cha valve, osachotsa thupi. Thupi la valavu ndi mapaipi amawotcherera kukhala amodzi, momwe angathere kuti achepetse kutuluka kwa bokosi lozizira, kuti atsimikizire kusindikizidwa kwa valve.
Kufufuza kwa ma valve otsika kutentha kumafunikira chisamaliro
Valavu yotsika yotsika imatanthawuza valavu yomwe ingagwiritsidwe ntchito pansi pa kutentha kochepa. Nthawi zambiri, valavu yomwe kutentha kwake kumakhala kotsika kuposa -40 ℃ kumatchedwa valavu yotsika. Valve yotsika kutentha ndi chimodzi mwazinthu zofunika kwambiri pamakampani a petrochemical, kulekanitsa mpweya, gasi wachilengedwe ndi mafakitale ena. Ubwino wake umatsimikizira ngati ungapangidwe motetezeka, mwachuma komanso mokhazikika. Ndi chitukuko cha teknoloji yamakono, kugwiritsa ntchito valve yotsika kutentha kumakhala kowonjezereka, kufunikira kumakhalanso kwakukulu.
Pakuti kutentha kuposa -50 ℃, zambiri musagwiritse ntchito dongosolo yaitali khosi, kutentha m'munsimu -50 ℃ valavu mpira, khosi kutalika T malinga ndi kapangidwe ndi mawerengedwe a Yijie vavu kampani. Low kutentha valavu mpira zimagwiritsa ntchito linanena bungwe la madzi otsika kutentha TV monga ethylene, madzi mpweya, madzi wa hydrogen, liquefied gasi, liquefied mafuta mafuta, etc., osati kuyaka ndi kuphulika, komanso Kutentha kwa gasification, gasification. , kuwonjezereka kwa mawu kambirimbiri.
Zida za valve yamagetsi yamagetsi ndizofunikira kwambiri, zinthuzo sizoyenera, zidzachititsa kuti chipolopolo ndi kusindikiza pamwamba kutayike kapena kutayikira; The mabuku mawotchi katundu, mphamvu ndi chitsulo cha mbali sangathe kukwaniritsa zofunika ntchito kapena fracture. Zomwe zimapangitsa kuti gasi wachilengedwe atayike. Choncho, popanga, kupanga ndi kupanga ma valve a gasi achilengedwe, zinthuzo ndizofunikira komanso zofunika kwambiri. The valavu thupi ndi chivundikiro kutengera: LCB(-46 ℃), LC3(-101 ℃), CF8(304)(-196 ℃).
Valavu yotsika yotsika imayenera kugwiritsa ntchito mawonekedwe a chivundikiro cha valve yayitali ya khosi, tsiku lake ndikuchepetsa kutentha komwe kukubwera mu chipangizocho; Onetsetsani kuti kutentha kwa bokosi lolongedza lili pamwamba pa 0 ℃, kuti kulongedzako kugwire ntchito bwino; Pewani kuzizira kapena kuzizira kwa tsinde ndi kumtunda kwa bonati pagawo la bokosi loyikamo chifukwa chakuti gawo la bokosi loyikamo likuzizira kwambiri.
Mapangidwe a chivundikiro cha khosi lalitali la valve makamaka mapangidwe a kutalika kwa khosi L, L amatanthauza mtunda wochokera pansi pa bokosi lopangira zinthu kupita kumtunda wa mpando wosindikiza, umagwirizana ndi kutentha kwa zinthuzo, malo opangira matenthedwe otenthetsera komanso kutentha kwapang'onopang'ono kutentha kwapakati, malo otenthetsera kutentha ndi zinthu zina, kuwerengera kumakhala kovuta kwambiri, komwe kumapezeka mwa njira yoyesera.
Zochita zogwirira ntchito za valve yotsika kutentha zimakhala zovuta. Zambiri mwazinthu zomwe zimagwira ntchito zimakhala zoyaka, zophulika komanso zotha kulowa. The otsika ntchito kutentha angafikire -269 ℃ ndi pazipita mavuto ntchito akhoza kufika 10MPa. Choncho, mapangidwe, kupanga ndi kuyang'ana ma valve otsika kutentha ndi osiyana kwambiri ndi ma valve onse.
Anthu ambiri, kungoyika zinthu valavu ndi otsika kutentha zitsulo mwachindunji amaona mavavu cryogenic, kwenikweni apo ayi, ndi mavavu cryogenic wa mankhwala theka anamaliza, chifukwa sanatero pambuyo cryogenic mankhwala pa kutentha otsika, ndi otsika kutentha. cryogenic chithandizo ndi nods eyeball cholembera cha mavavu cryogenic, mavavu cryogenic mu chithandizo cryogenic n'kofunika, kotero kuonetsetsa kuti magawo onse a mavavu cryogenic kukwaniritsa zofunika, Makamaka coefficient kukulitsa, sizidzatsogolera zosiyanasiyana valavu anakanthidwa ntchito. . Nthawi zina poganizira za mtengo wa vutoli, muyenera kuganiziranso za ubwino wa valve. Valve yotsika kutentha ndi valve yapadera.
Tsopano mavavu am'nyumba ambiri a cryogenic sali kwenikweni pambuyo pa chithandizo cha cryogenic pa kutentha kochepa, mtengo ukanakhala wokwera mtengo, apa ndikhoza kukupatsani ntchito yovuta, ngati mtengo wanu wa zida za cryogenic ndi wapamwamba, zida za cryogenic ndizokwera mtengo, ndi cryogenic liquid nitrogen. kuwonjezera zinthu zofunika ndi zoipa yosungirako sing'anga, ndi valavu mu processing wa madzi asafe kwambiri, Ndipo madzi asafe si otsika mtengo. Valavu yotsika yotsika yopangidwa ndi chithandizo chapadera cha kutentha kwapadera, magawo opangira makina oziziritsa kwa maola angapo (maola 2-8), kumasula kupsinjika, kuonetsetsa kutentha kwa zinthuzo, kuonetsetsa kukula kwake, kuteteza valavu mu kutentha otsika kutentha, chifukwa cha kutentha kusintha chifukwa cha deformation chifukwa kutayikira kwa valavu otsika kutentha.
Kufufuza kwa ma valve otsika kutentha kumafunika kusamala:
Kuti valavu ya cryogenic ikwaniritse zofunikira za kasitomala, ngati mukufuna valavu ya cryogenic, chonde perekani magawo omwe mumawadziwa.
1. Dzina la sing'anga kutentha;
2. Kutentha kwa sing'anga kutentha;
3. Muyenera kusintha kutalika kwa khosi lalitali la valve yotsika kutentha, yomwe siinaperekedwe malinga ndi muyezo wa valve;
4. Zinthu za valve yotsika kutentha (zikhoza kusinthidwa malinga ndi zofuna za makasitomala);
5. Kuthamanga kwa valve yotsika kutentha;
6. Chisindikizo cha valve yotsika kutentha (chisindikizo chofewa kapena chisindikizo cholimba);
7. Njira yolumikizira (kugwirizana kwa flange kapena kuwotcherera);
8. Kuyendetsa galimoto (pamanja, pneumatic, magetsi).