Uma kuqhathaniswaivalvu yesango, i-globe valve kanye nomklamo we-check valve, umlando we-ball valve umfushane kakhulu. Nakuba ilungelo lobunikazi lokuqala le-ball valve lakhishwa ngo-1871, kuzothatha iminyaka engu-85 ukuthi i-ball valve iphumelele kwezentengiselwano. I-Polytetrafluoroethylene (PTFE, noma "Teflon") yatholakala ngesikhathi senqubo yokuklama ibhomu le-athomu ngesikhathi seMpi Yezwe II, ezoba yimbangela yokuqala imboni yama-ball valve. Ama-ball valve atholakala kuzo zonke izinto kusukela kuthusi kuya ku-carbon steel kanye ne-stainless steel kuya ku-zirconium.

Kunezinhlobo ezimbili eziyisisekelo: amabhola antantayo namabhola e-trunnion. Le miklamo emibili ivumela ukwakhiwa kwama-valve ebhola asebenzayo kusukela ku-¼” kuya ku-60” nangaphezulu. Ngokuvamile, umklamo ontantayo usetshenziselwa ama-valve amancane naphansi okucindezela, kanti uhlobo lwe-trunnion lusetshenziselwa ukusetshenziswa kwama-valve amakhulu naphezulu okucindezela.

I-VM SUM21 BALL API 6Divalvu yebholaI-API 6D ball valve isebenzisa lezi zinhlobo ezimbili zama-ball valve ngenxa yezindlela zazo zokuvala kanye nendlela amandla oketshezi ageleza ngayo esuka epayipini aye ebholeni bese esabalala esihlalweni se-valve. Ekwakhiweni kwebhola elintantayo, ibhola lingena kahle phakathi kwezihlalo ezimbili, esinye phezulu kanye nesinye phansi. Amandla oketshezi asebenza ebholeni, alisunduzele esihlalweni se-valve esisemzimbeni we-valve engezansi. Njengoba ibhola limboza yonke imbobo yokugeleza, wonke amandla okugeleza asunduzela ibhola ukuze alicindezele esihlalweni se-valve. Uma ibhola likhulu kakhulu futhi ingcindezi inkulu kakhulu, amandla esihlalweni se-valve azoba makhulu, ngoba i-torque yokusebenza inkulu kakhulu futhi i-valve ayikwazi ukusebenza.

Amavalvu ebhola antantayo anezinhlobo ezahlukene zomzimba, kodwa ethandwa kakhulu uhlobo lokungena olunezicucu ezimbili. Ezinye izitayela zomzimba zifaka phakathi ukungena okunezicucu ezintathu kanye nokungena okuphezulu. Amavalvu ebhola antantayo akhiqizwa ngosayizi ofinyelela ku-24″ kanye nama-grade angu-300, kodwa ububanzi bangempela bokusetshenziswa kwamavalvu ebhola antantayo buvame ukuba ngaphansi kakhulu - ubukhulu bungaba ngu-12″.

Nakuba amavalvu ebhola eklanyelwe ngokuyinhloko njengamavalvu okuvula/ukuvala noma “okumisa”, ukwengezwa kwamavalvu ebhola kanye ne-V-portivalvu yebholaimiklamo ibenza bafanelekele izinhlelo zokusebenza ezilawulwayo.

Isihlalo esinwebekayo
I-VM SUM21 BALL Flanged Ball Valve I-Flanged ball valve Ama-flanged ball valve amancane angasetshenziswa ezinhlotsheni eziningi ezahlukene, kusukela kumapayipi asekhaya kuya kumapayipi aqukethe amakhemikhali adinga kakhulu. Izinto zokuhlala ezithandwa kakhulu zala ma-valve uhlobo oluthile lwe-thermoplastic, njenge-PTFE. Izihlalo zama-valve e-Teflon zisebenza kahle ngoba zithambile ngokwanele ukuvala kahle emabhola ensimbi acwebezelisiwe, kodwa ziqinile ngokwanele ukuthi zingaphumi ku-valve. Izinkinga ezimbili eziyinhloko ngala ma-valve ezihlalo ezithambile ukuthi aklwebheka kalula (futhi angase avuza), futhi izinga lokushisa lilinganiselwe ngaphansi kwephuzu lokuncibilika kwesihlalo se-thermoplastic - cishe ama-450oF (232oC), kuye ngempahla yesihlalo.

Isici sama-valve amaningi ebhola antantayo esihlalo esinwebekayo ukuthi angavalwa kahle uma kwenzeka umlilo obangela ukuba isihlalo esiyinhloko sincibilike. Lokhu kubizwa ngokuthi umklamo ongashi; unesikhwama sesihlalo esingagcini nje ngokubamba isihlalo esinwebekayo endaweni yaso, kodwa futhi sihlinzeka ngobuso besihlalo sensimbi obuhlinzeka ngokuvalwa okuyingxenye uma sithinta ibhola. Ngokusho kwezindinganiso zokuhlola umlilo ze-American Petroleum Institute (API) 607 noma 6FA, i-valve ihlolwa ukuqinisekisa umklamo wokuvikela umlilo.

Umklamo we-trunnion
I-VM SUM21 BALL API 6D trunnion ball valve API 6D trunnion ball valve Uma kudingeka i-valve yebhola enkulu kanye nengcindezi ephezulu, umklamo uphendukela ohlotsheni lwe-trunnion. Umehluko phakathi kwe-trunnion kanye nohlobo oluntantayo ukuthi ibhola le-trunnion liqiniswe emzimbeni oyinhloko yi-trunnion engezansi (induku emfushane yokuxhuma) kanye nenduku ephezulu. Njengoba ibhola lingakwazi "ukuntanta" esihlalweni se-valve ukuze lifinyelele ukuvalwa okuphoqelekile, isihlalo se-valve kumele sintante ebholeni. Umklamo wesihlalo se-trunnion ubangela ukuthi isihlalo sikhuthazwe yingcindezi ephezulu futhi siphoqelelwe endaweni ukuze sivalwe. Ngenxa yokuthi ibhola liqinile endaweni yalo, ngaphandle kokujikeleza kwalo okungu-90o, amandla angavamile oketshezi kanye nengcindezi ngeke kufake ibhola esihlalweni se-valve. Esikhundleni salokho, amandla asebenza kuphela endaweni encane engaphandle kwesihlalo esintantayo.

Idizayini yokungena ye-VM SUM21 BALL I-valve yebhola ye-trunnion design yokungena kokugcina iyi-big brother enamandla ye-floating ball valve, ngakho-ke ingakwazi ukusingatha imisebenzi emikhulu - ukucindezela okuphezulu kanye nobubanzi obukhulu bepayipi. Kuze kube manje, ukusetshenziswa okuthandwa kakhulu kwama-trunnion ball valve kusezinsizeni zokufaka amapayipi.