Isakhiwo Sebhokisi Lokugxusha Ezimweni Zokushisa Okuphezulu Nezingcindezi Eziphezulu Zezinselele Zokuvala Nemibono Yokuthuthukisa
Esakhiweni sama-ball valve nama-gate valve, ibhokisi lokugxusha njengengxenye eyinhloko yesistimu yokuvala isiqu, yize isakhiwo simile, kodwa lithatha ngqo umsebenzi obalulekile wokuvimbela ukuvuza kwemidiya. Ikakhulukazi ekushiseni okuphezulu kanye nokucindezela okuphezulu, izimo zokuvulwa nokuvalwa njalo, amandla esakhiwo sebhokisi lokugxusha, ukubekezelelana okulingana kanye nokusebenza kokupakisha ndawonye kunquma impilo kanye nokuqina kwesistimu yonke yokuvala.
Eminyakeni yamuva nje, sithole kumaphrojekthi amaningi embonini yamakhemikhali namandla ukuthi izinkinga zokuvala amabhokisi okupakisha ziye zaba yindawo yokwehluleka okukhulu kancane kancane. Impendulo yomsebenzisi: inani lama-valve ebhola aphakathi nendawo ekusebenzeni kwengxenye yonyaka ngemuva kokuvuza kwezimpande zesiqu, ukuhlaziywa okwengeziwe kukhombisa ukuthi amandla okupakisha awalingani okuholela ekucindezelweni okungaphelele, futhi umgodi wangaphakathi webhokisi lokugxusha kukhona ukuphambuka kwe-coaxial kanye nobunzima benkinga yokuntuleka.
Ngenxa yalolu hlobo lwesimo sokusebenza, sincoma ukuthi isakhiwo sebhokisi lokupakisha kufanele silungiselelwe ukwakheka kokucindezela okulinganayo, futhi umgodi wangaphakathi kufanele ubhobozwe ngamunye ukuze kulawulwe ukujiya kodonga lwangaphakathi ngaphakathi kwe-Ra 0.8 kanye ne-coaxiality engephezulu kune-0.02 mm. Ngaphezu kwalokho, ukwanda kwesakhiwo esiqondisayo noma ukwakheka kwehlombe okukhawulelayo kuzosiza ukucindezela kokupakisha ngokulinganayo kanye nokusebenza kwe-valve stem okuzinzile.
Ngokuphathelene nokukhethwa kwezinto, sivame ukuncoma ukusetshenziswa kwensimbi engagqwali njenge-AISI 316 noma i-F6a ukuze ivumelane nemidiya ehlukahlukene ebolile. Inhlanganisela yokupakisha inconywa ukuthi ibe yindandatho ye-PTFE ehlanganisiwe ye-graphite eguquguqukayo noma i-washer ye-graphite eboshwe ngensimbi, ekwazi ukumelana nokuvala okungcono kakhulu nokuguga ngaphansi kokushisa okuphezulu.
Ngesikhathi somshini wokugaya, ukulingana kwebhokisi lokugxusha ne-gland, umkhono ongaphezulu nezinye izingxenye ezihlobene kumele kuhlolwe ngokuphelele, hhayi ngokwehlukana. Siphakamisa ukuthi ubudlelwano bokuhlangana buphawulwe ngokulinganayo esigabeni sokudweba noma buxhunywe yimodeli yethu ukuqinisekisa ukuthi igebe lokuhlangana lifanelekile nokuthi ukushaywa kokucindezela kwesivalo kunembile. Ukwakheka kwesakhiwo sonke kufanele kucabangele i-torque yokuvula neyokuvala, ukucindezeleka kokupakisha kanye nokwelulwa kokushisa, ukuze kuthuthukiswe ngempela ukusebenza kokuvala okuphelele kwe-valve.