Izicelo Ezisha Ezishiselwe Izingcezu Ezimbili zeValve Yebhola Lesikhathi Esiphakeme, Indawo Yengcindezi Ephakeme
1. Isingeniso
Amavalvu ayimishini ebalulekile esetshenziselwa ukulawula ukugeleza koketshezi, ingcindezi kanye nokugeleza kokuqondisa ezinhlelweni zokulethwa koketshezi. Zisetshenziswa kabanzi ku-petroleum, amakhemikhali, amandla kagesi, i-metallurgy nezinye izimboni. Emazingeni okushisa aphezulu kanye nezindawo zokucindezela okukhulu, ama-valve adingeka ukuthi abe nezidingo eziqinile, ezingadingi nje kuphela ukuthi zibe nokusebenza okuhle kokuvala, kodwa futhi zidinga ukuthi zibe nokushisa okuphezulu nokumelana nokucindezela. Njenge-valve yezimboni esebenza kahle kakhulu, i-valve yebhola eneziqephu ezimbili ezishiselwe isetshenziswe kabanzi emkhakheni wokushisa okuphezulu nokucindezela okukhulu ngenxa yomklamo wayo oyingqayizivele wesakhiwo nokusebenza okuphakeme.
2. Izici zesakhiwo ezishiselwe ama-valve amabhola amabili
2.1. Isakhiwo esilula: I-valve yebhola eneziqephu ezimbili ezishiselwe ikakhulukazi yakhiwe umzimba we-valve, ibhola, isihlalo se-valve, isiqu se-valve, indandatho yokuvala nezinye izakhi. Inesakhiwo esilula, isisindo esincane, futhi kulula ukuyifaka nokuyinakekela.
2.2. Ukusebenza kahle kokuvala: Ibhola kanye nesihlalo se-valve kwamukela ukuvalwa kobuso, nendawo enkulu yokuvala kanye nokusebenza kahle kokuvala, okungahlangabezana nezidingo zokuvala ngaphansi kwezinga lokushisa eliphezulu kanye nezindawo ezinengcindezi ephezulu.
2.3. Isivinini sokuvula nokuvala ngokushesha: I-valve yebhola eneziqephu ezimbili ezishiselwe ithatha ukuzungezisa okungu-90° kwebhola ukuze kuzuzwe ukuvula nokuvala, ngokuvula nokuvala ngokushesha isivinini kanye nokusebenza okulula.
2.4. Ukumelana nokugeleza okuncane: Isiteshi sebhola siklanyelwe ngobubanzi obugcwele, ukumelana nokugeleza okuncane, umthamo omkhulu wokugeleza, futhi kunganciphisa ukusetshenziswa kwamandla kwesistimu.
2.5. Ukushisa okuhle nokumelana nokucindezela: I-valve yebhola eneziqephu ezimbili ezishiselwe yenziwe ngezinto ezikhethekile, inokushisa okuhle kakhulu nokumelana nokucindezela, futhi ifanele izinga lokushisa eliphezulu kanye nezindawo zokucindezela okukhulu.
2.6. Izindlela ezihlukahlukene zokushayela: i-manual, kagesi, i-pneumatic, i-hydraulic nezinye izindlela zokushayela zingakhethwa ngokuvumelana nezidingo zangempela.
3. Amacala okufaka ama-valve aneziqephu ezimbili zebhola ashiselwe ekushiseni okuphezulu nasezindaweni ezicindezelayo
3.1. Imboni ye-Petrochemical
Eyunithi yokucwenga yebhizinisi le-petrochemical, izinga lokushisa eliphakathi nendawo liphezulu njenge-400 ℃ futhi ingcindezi ifinyelela ku-10MPa. Kulo mshini, i-valve yebhola eneziqephu ezimbili eshiselwe isetshenziswa njengethuluzi eliyisihluthulelo lokulawula ukugeleza koketshezi nokucindezela. Ngemuva kweminyaka yokusebenza, i-valve yebhola ibonise ukusebenza okuhle kokuvala kanye nokushisa nokumelana nokucindezela, iqinisekisa ukusebenza okuzinzile kwedivayisi.
3.2. Imboni yamandla
Ohlelweni lwamanzi okuphakelayo kubhayela wesikhungo samandla ashisayo, izinga lokushisa eliphakathi lingama-320 ℃ kanye nengcindezi ingu-25MPa. Kulolu hlelo, i-valve yebhola eneziqephu ezimbili eshiselwe isetshenziswa njengethuluzi lokusika nokulawula. Ekusebenzeni kwangempela, i-valve yebhola ibonisa izici zokuvula ngokushesha nokuvala isivinini, ukusebenza kahle kokuvala uphawu, kanye nokushisa okuhle kakhulu nokumelana nokucindezela, okunikeza isiqinisekiso esiqinile sokusebenza okuphephile nokuzinzile kwezitshalo zamandla ezishisayo.
3.3. Imboni ye-Metallurgical
Emgqeni wokukhiqiza oshisayo webhizinisi lensimbi, izinga lokushisa eliphakathi ngu-600 ℃ futhi ingcindezi ingu-15MPa. Kulo mugqa wokukhiqiza, i-valve yebhola eneziqephu ezimbili ezishiselwe isetshenziswa njengethuluzi lokulawula eliphakathi. I-valve yebhola ibonisa ukusebenza okuhle ngaphansi kokushisa okuphezulu kanye nemvelo yokucindezela okukhulu, ukuhlangabezana nezidingo zokukhiqiza zomugqa wokukhiqiza.
4. Izinyathelo zokuqapha zokusetshenziswa kwama-valve aneziqephu ezimbili zebhola ashiselwe ekushiseni okuphezulu nasezindaweni ezinengcindezi ephezulu.
4.1. Khetha izinto ezifanele: Ngokusho kokushisa okusebenzayo nokucindezela kwangempela, khetha izinto ezinokushisa okuhle kakhulu nokumelana nokucindezela ukuze uqinisekise impilo yesevisi ye-valve yebhola ekushiseni okuphezulu nasezindaweni ezicindezelayo.
4.2. Idizayini yokuvala eqinile: Idizayini yokuvala iwukhiye wamavalvu ebhola aneziqephu ezimbili ezishiselwe. Izinto zokufaka uphawu ezifanele kufanele zikhethwe ukuze kuqinisekiswe ukusebenza kokuvalwa kwe-valve yebhola ekushiseni okuphezulu nasezindaweni ezicindezelayo.
4.3. Lungiselela imodi yokushayela: Ngokwezidingo zangempela, khetha imodi yokushayela efanele ukuze uthuthukise ukusebenza nokusebenza okuzenzakalelayo kwe-valve yebhola.
4.4. Ukuhlola nokugcinwa okuvamile: Ngaphansi kokushisa okuphezulu kanye nemvelo yokucindezela okukhulu, ukusebenza kokuvala uphawu kanye nokushisa nokumelana nokucindezela kwe-valve yebhola kuthinteka kalula. Ngakho-ke, i-valve yebhola kufanele ihlolwe futhi igcinwe njalo ukuze kuqinisekiswe ukusebenza kwayo okuvamile.
4.5. Abaqhubi bezitimela: Qinisa ukuqeqeshwa kwabaqhubi, uthuthukise amakhono abo okusebenza, futhi unciphise ukwehluleka kwama-valve ebhola okubangelwa ukusebenza okungafanele.
I-valve yebhola eneziqephu ezimbili ezishiselwe inokusebenza okuhle kakhulu kwesicelo ngaphansi kwezinga lokushisa eliphezulu kanye nemvelo yokucindezela okukhulu, enikeza isiqinisekiso esiqinile se-petroleum, amakhemikhali, amandla kagesi, i-metallurgy nezinye izimboni. Ekusetshenzisweni kwangempela, izinto ezifanele kufanele zikhethwe ngokuvumelana nezimo zangempela zokusebenza, ukuklama okuqinile kokuvalwa, imodi yokushayela elungiselelwe, ukuhlolwa nokugcinwa njalo, nokuqeqeshwa komqhubi kufanele kuqiniswe ukuze kuqinisekiswe ukusebenza okuphephile nokuzinzile kwe-valve yebhola ngaphansi kokushisa okuphezulu nokuphakama okuphezulu. indawo yokucindezela. Ngokuthuthuka okuqhubekayo kobuchwepheshe bezimboni, i-valve yebhola eneziqephu ezimbili ezishiselwe izodlala indima ebalulekile emikhakheni eminingi.