Ukukhetha ivalve yebhola kubonakala kulula de ubone zonke iinketho. Khetha engalunganga, kwaye unokujongana nokuhamba okuthintelweyo, ulawulo olubi, okanye ukusilela kwenkqubo.

Iindidi ezine eziphambili zeevalvu zebhola zahlulahlulwe ngomsebenzi wazo kunye noyilo: ivalve yebhola edadayo, ivalve yebhola ene-trunnion, ivalve egcweleyo, kunye nevalve encitshisiweyo. Ngamnye ulungele iingcinezelo ezahlukeneyo kunye neemfuno zokuhamba.

Ndihlala ndithetha noBudi, umphathi wokuthenga kwelinye lamaqabane ethu e-Indonesia, malunga nokuqeqesha iqela lakhe labathengisi. Omnye wemiqobo emikhulu kubathengisi abatsha ziintlobo ezahlukeneyo zeevalvu. Bayawuqonda umsebenzi osisiseko wokuvula/ucime, kodwa ke baye babethwe ngamagama anje “itrani^[1],” “L-port,” okanye “edadayo^[2].” Umthengi unokucela ivalve yomgca woxinzelelo oluphezulu, kwaye umthengisi omtsha unokunikela ngevalve ejikelezayo esemgangathweni xa ivalve ye-trunnion ifuneka ngokwenene Ukuqhawula ezi ndidi zibe zizinto ezilula, eziqondakalayo ngundoqo.

Zeziphi ezi ntlobo zine zeevalvu zebhola?

Udinga ivalve, kodwa ikhathalogu ibonisa iindidi ezininzi. Ukusebenzisa engalunganga kunokudala umqobo kwinkqubo yakho okanye kuthetha ukuba uhlawula ngaphezulu kweempawu ongazidingiyo.

Iivalvu zebhola zihlala zihlelwa ngokoyilo lwazo lwebhola kunye nobukhulu bebhola. Iindidi ezine eziqhelekileyo zezi: ukudada kunye ne-trunnion-mounted (ngenkxaso yebhola) kunye ne-port epheleleyo kunye nokunciphisa-izibuko (ngobukhulu bokuvula). Ngamnye unika ibhalansi eyahlukileyo yokusebenza kunye neendleko.

Masizicalule ngokulula ezi. Iindidi ezimbini zokuqala zimalunga nendlela ibhola exhaswa ngayo ngaphakathi kwevalve. Aivalve yebhola edadayo^[3]lolona hlobo luxhaphakileyo; ibhola ibanjwe kwindawo esezantsi kunye nezihlalo eziphezulu. Ilungile kwizicelo ezininzi ezisemgangathweni. Aivalve ene-trunnion^[4]inezixhaso ezongezelelekileyo zoomatshini—isiqu phezulu kunye netrani ezantsi—ebambe ibhola. Oku kuyenza ilungele i-high-pressure okanye i-valve enkulu kakhulu. Ezi ntlobo zimbini zilandelayo zimalunga nobukhulu bomngxuma ophumela ebholeni. Aizibuko eligcweleyo(okanye i-valve egcweleyo) inomngxuma olingana nombhobho, obangela ukuba kungabikho mqobo wokuhamba. Aizibuko elincitshisiweyoivalve inomngxuma omncinci. Oku kulungile ngokugqibeleleyo kwiimeko ezininzi kwaye kwenza ivalve ibencinci kwaye ifikeleleke ngakumbi.

Ukuthelekisa Iindidi ezine eziphambili

Wazi njani ukuba ivalve yebhola ivuliwe okanye ivaliwe?

Uza kusika kumbhobho, kodwa uqinisekile ukuba ivalve ivaliwe? Impazamo elula apha ingakhokelela kumonakalo omkhulu, umonakalo wamanzi, okanye ukulimala.

Unokwazi ukuba aivalve yebholaivuliwe okanye ivaliwe ngokujonga indawo yokubamba ngokumalunga nombhobho. Ukuba isibambo sihambelana nombhobho, i-valve ivuliwe. Ukuba isibambo si-perpendicular (esenza i-"T") i-shape), i-valve ivaliwe.

Eli lolona lwazi lusisiseko nolubalulekileyo kuye nabani na osebenza ngeevalvu zebhola. Indawo yomqheba sisalathisi esibonakalayo sendawo yebhola. Eli nqaku loyilo olulula sesinye sezizathu eziphambili zokuba iivalvu zebhola zithandwa kakhulu. Akukho kuthelekelela. Ndakhe ndeva ibali elivela kuBudi malunga nomsebenzi omncinci wesondlo kwiziko owayengxamile. Wathi krwaqu kwivalve wacinga ukuba icimile, kodwa yayisivalvu yesango endala efuna ukujikwa izihlandlo ezininzi, kwaye wayengakwazi ukuyixela imeko yayo ngokubona. Wenza i-cut kwaye waphuphuma igumbi. Ngevalve yebhola, loo mpazamo phantse ayinakwenzeka. Inyathelo lokujika kwekota kunye nendawo yokubamba ecacileyo ibonelela ngoko nangoko, impendulo engacacanga: emgceni "uvuliwe," ngapha nangapha "cimile." Olu phawu lulula sisixhobo esinamandla sokhuseleko.

Yintoni umahluko phakathi kohlobo lwe-T kunye nohlobo lwevalve yebhola ye-L?

Kufuneka uphambukise ukuhamba, ungayiyeki nje. Ukuodola ivalve esemgangathweni akuzukusebenza, kwaye ukuodola ivalve ye-multi-port engalunganga kunokuthumela amanzi kwindawo engalunganga ngokupheleleyo.

Uhlobo lwe-T kunye nohlobo lwe-L lubhekiselele kwimilo yebhore kwibhola ye-valve ye-3-way. Uhlobo lwe-L lunokuphambukisa ukuhamba ukusuka kwindawo yokungena ukuya kwenye yezimbini. Uhlobo lwe-T lunokwenza okufanayo, kwaye lunokudibanisa onke amazibuko amathathu kunye.

Le yinto eqhelekileyo yokudideka kubantu abathenga i-valve yabo yokuqala ye-3-way. Makhe sicinge ngevalve enamazibuko amathathu: ezantsi, ekhohlo, nasekunene. AnI-L-Port^[5]iveluve ine-90-degree bend egrunjwe ngebhola. Kwindawo enye, idibanisa izibuko elisezantsi kwizibuko lasekhohlo. Ngokujika kwekota, idibanisa izibuko elisezantsi kwizibuko lasekunene. Ayinakuze idibanise zontathu. Ilungele ukuphambukisa ukuhamba ukusuka kumthombo omnye ukuya kwiindawo ezimbini ezahlukeneyo. AT-Port^[6]iveluve inokwakheka kuka-“T” okugqojozwe ebholeni. Inokhetho oluninzi. Iyakwazi ukudibanisa ezantsi ukuya ekhohlo, ezantsi ukuya ekunene, okanye inokudibanisa ekhohlo ukuya ekunene (ngokudlula ezantsi). Okubaluleke kakhulu, inendawo edibanisa onke amazibuko amathathu kanye, ivumela ukuxuba okanye ukuphambukisa. Iqela likaBudi lihlala libuza umthengi: "Ngaba kufuneka udibanise ukuhamba, okanye utshintshe phakathi kwazo?" Impendulo ngokukhawuleza ibaxelela ukuba i-T-Port okanye i-L-Port iyafuneka.

L-Port vs. T-Port Ubunakho

Yintoni umahluko phakathi kwetruni kunye nevalve yebhola edadayo?

Inkqubo yakho isebenza phantsi koxinzelelo oluphezulu. Ukuba ukhetha ivalve yebhola esemgangathweni, uxinzelelo lunokwenza kube nzima ukujika okanye kubangele ukuba izitywina zingaphumeleli ekuhambeni kwexesha.

Kwivalve edadayo, ibhola “idada” phakathi kwezihlalo, ityhalwa ngoxinzelelo. Kwi-valve ye-trunnion, ibhola igxininiswe ngomatshini nge-shaft ephezulu kunye nezantsi (i-trunnion), ethatha uxinzelelo kunye nokunciphisa uxinzelelo kwizihlalo.

Umahluko umalunga nokulawula amandla. Kumgangathoivalve yebhola edadayo^[7], xa ivalve ivaliwe, uxinzelelo oluphezulu lutyhala ibhola ngamandla kwisihlalo esisezantsi. La mandla adala itywina. Ngelixa isebenzayo, oku kudala ukungqubana okuninzi, okunokwenza ukuba ivalve ibe nzima ukuyijika, ngakumbi kubungakanani obukhulu okanye phantsi koxinzelelo oluphezulu. Aivalve ene-trunnion^[8]iyayisombulula le ngxaki. Ibhola igxininiswe kwindawo ngokuxhasa i-trunnion, ukuze ingatyhalwa kukuhamba. Uxinzelelo endaweni yoko lutyhala izihlalo ezilayishwe entwasahlobo ngokuchasene nebhola emileyo. Olu yilo lufunxa amandla amakhulu, okukhokelela kwitorque esezantsi kakhulu (kulula ukuyijika) kunye nobomi obude besitulo. Kungenxa yoko le nto kwizicelo zoxinzelelo oluphezulu lweshishini, ngakumbi kwishishini leoli kunye negesi, iivalve ze-trunnion zisemgangathweni ofunekayo. Kwiinkqubo ezininzi zePVC, uxinzelelo lusezantsi ngokwaneleyo ukuba ivalve edadayo isebenze ngokugqibeleleyo.

Ukudada edadayo vs. Trunnion Head-to-Head

Ukuqukumbela

Iindidi ezine zevalve eziphambili-ezidadayo, i-trunnion, i-port epheleleyo, kunye ne-port encitshisiweyo-inketho yokunikezela nayiphi na isicelo. Ukwazi umahluko phakathi kwabo, kunye neentlobo ezikhethekileyo ezifana ne-L-port kunye ne-T-port, iqinisekisa ukuba ukhetha ngokugqibeleleyo.