Ukukhetha i-valve yebhola kubonakala kulula uze ubone zonke izinketho. Khetha engalungile, futhi ungase ubhekane nokugeleza okunomkhawulo, ukulawula okungalungile, noma ngisho nokuhluleka kwesistimu.

Izinhlobo ezine eziyinhloko zamavalvu ebhola zihlukaniswa ngomsebenzi wawo nokuklama kwawo: i-valve yebhola elintantayo, i-trunnion-mounted ball valve, i-valve yembobo egcwele, kanye ne-valve yembobo encishisiwe. Ngayinye ifanele izingcindezi ezahlukene kanye nezidingo zokugeleza.

Ngivame ukukhuluma no-Budi, umphathi wokuthenga womunye wozakwethu e-Indonesia, mayelana nokuqeqesha ithimba lakhe labadayisi. Esinye sezithiyo ezinkulu kubathengisi abasha ukuhlukahluka kwama-valve. Baqonda umsebenzi oyisisekelo wokuvula/ukuvala, kodwa bese bethola amagama anjengokuthi “i-trunnion^[1],” “L-port,” noma “ezintantayo^[2].” Ikhasimende lingase licele i-valve yolayini wengcindezi ephezulu, futhi umthengisi omusha angase anikeze ivelufa evamile entantayo lapho i-valve ye-trunnion idingeka ngempela.

Yiziphi izinhlobo ezine zamavalvu ebhola?

Udinga i-valve, kodwa ikhathalogi ibonisa izinhlobo eziningi. Ukusebenzisa engalungile kungadala ibhodlela kusistimu yakho noma kusho ukuthi ukhokha ngokweqile ngezici ongazidingi nokuzidingi.

Ama-valve ebhola avame ukuhlukaniswa ngokuklama kwawo ibhola kanye nosayizi wokubhoboza. Izinhlobo ezine ezivamile yilezi: ezintantayo kanye ne-trunnion-mounted (ngokusekelwa kwebhola) kanye nembobo egcwele kanye nembobo encishisiwe (ngosayizi wokuvula). Ngayinye inikeza ibhalansi ehlukile yokusebenza nezindleko.

Ake sihlukanise lezi kalula. Izinhlobo ezimbili zokuqala zimayelana nokuthi ibhola lisekelwa kanjani ngaphakathi kwe-valve. Ai-valve yebhola elintantayo^[3]uhlobo oluvame kakhulu; ibhola libanjwe izihlalo ezansi nomfula. Ilungele izinhlelo zokusebenza eziningi ezijwayelekile. Ai-valve ene-trunnion^[4]inezisekelo ezengeziwe zemishini—isiqu phezulu kanye ne-trunnion phansi—ebambe ibhola. Lokhu kuyenza ilungele ukucindezela okuphezulu noma ama-valve amakhulu kakhulu. Izinhlobo ezimbili ezilandelayo zilingana nobukhulu bembobo ebholeni. Aimbobo egcwele(noma ukubhoboza okugcwele) ivalvu inembobo elingana nepayipi, akubangeli ukuvinjelwa kokugeleza. Aimbobo encishisiwei-valve inembobo encane. Lokhu kuhle kakhulu ezimweni eziningi futhi kwenza i-valve ibe mancane futhi ithengeke kakhulu.

Ukuqhathanisa Izinhlobo Ezine Eziyinhloko

Wazi kanjani ukuthi i-valve yebhola ivuliwe noma ivaliwe?

Usuzosika ipayipi, kodwa uqinisekile ukuthi i-valve ivaliwe? Iphutha elilula lapha lingaholela ekulimaleni okukhulu, ukulimala kwamanzi, noma ukulimala.

Ungabona uma ai-valve yebholaivuliwe noma ivaliwe ngokubheka indawo yesibambo ngokuhlobene nepayipi. Uma isibambo sihambisana nepayipi, i-valve ivuliwe. Uma isibambo si-perpendicular (sakha umumo othi "T"), i-valve ivaliwe.

Lolu wucezu lolwazi oluyisisekelo nolubalulekile kunoma ubani osebenza ngamavalvu ebhola. Indawo yesibambo iyinkomba eqondile ebonakalayo yendawo yebhola. Lesi sici esilula sokuklama esinye sezizathu eziyinhloko ukuthi ama-valve ebhola athandwa kakhulu. Akukho ukuqagela. Ngake ngezwa indaba evela kuBudi mayelana nesisebenzi esingaphansi kwesondlo esikhungweni esasijahile. Waphosa amehlo kuvalvu wacabanga ukuthi icishiwe, kodwa kwakuyi-valve yesango endala eyayidinga ukuphenduka kaningi, futhi wayengakwazi ukusibona ngokubona isimo sayo. Wasika futhi wagcwala igumbi. Nge-valve yebhola, lelo phutha cishe akunakwenzeka ukwenza. Isenzo sekota kanye nesimo sesibambo esicacile sinikeza impendulo esheshayo, ecacile: emgqeni "uvuliwe," ngaphesheya "kuvaliwe." Lesi sici esilula siyithuluzi elinamandla lokuphepha.

Uyini umehluko phakathi kohlobo lwe-T kanye nama-valve ohlobo lwe-L?

Udinga ukuphambukisa ukugeleza, hhayi nje ukukumisa. Uku-oda i-valve evamile ngeke kusebenze, futhi uku-oda i-valve enezimbobo eziningi engalungile kungathumela amanzi endaweni engafanele ngokuphelele.

Uhlobo lwe-T kanye nohlobo lwe-L lubhekisela ekumeni kwebhore ebholeni le-valve yezindlela ezi-3. Uhlobo lwe-L lungaphambukisa ukugeleza kusuka endaweni yokungena eyodwa kuya kweyodwa yezibili. Uhlobo lwe-T lungenza okufanayo, futhi lungakwazi ukuxhuma wonke amachweba amathathu ndawonye.

Leli iphuzu elivamile lokudideka kubantu abathenga i-valve yabo yokuqala yezindlela ezi-3. Ake sicabange ngevalvu enamachweba amathathu: phansi, kwesokunxele, nakwesokudla. AnI-L-Port^[5]I-valve ine-gobe engama-degree angu-90 ebhobozwe ebholeni. Endaweni eyodwa, ixhuma imbobo engezansi embobeni engakwesokunxele. Ngokujika kwekota, ixhuma imbobo engezansi embobeni engakwesokudla. Ayisoze yaxhuma yontathu. Ilungele ukuphambukisa ukugeleza kusuka emthonjeni owodwa kuya ezindaweni ezimbili ezihlukene. AI-T-Port^[6]ivalvu inomumo othi “T” obhobhozwe ebholeni. Inezinketho eziningi. Ingakwazi ukuxhuma phansi kwesokunxele, phansi kwesokudla, noma ixhume kwesokunxele kwesokudla (idlula phansi). Okubaluleke kakhulu, futhi inesikhundla esixhumanisa wonke amachweba amathathu ngesikhathi esisodwa, okuvumela ukuxutshwa noma ukuphambukisa. Ithimba likaBudi lihlala libuza ikhasimende: “Ingabe udinga ukuhlanganisa ukugeleza, noma uvele ushintshe phakathi kwakho?” Impendulo ibatshela ngokushesha uma kudingeka i-T-Port noma i-L-Port.

I-L-Port vs. Amakhono we-T-Port

Uyini umehluko phakathi kwe-trunnion ne-valve yebhola elintantayo?

Isistimu yakho isebenza ngaphansi kwengcindezi ephezulu. Uma ukhetha i-valve yebhola evamile, ukucindezela kungenza kube nzima ukujika noma kubangele ngisho nokuhluleka kwezimpawu ngokuhamba kwesikhathi.

Ku-valve entantayo, ibhola “lintanta” phakathi kwezihlalo, liphushwa ukucindezela. Ku-valve ye-trunnion, ibhola liqiniswa ngomshini yi-shaft ephezulu nephansi (i-trunnion), ebamba ukucindezela futhi inciphise ukucindezeleka ezihlalweni.

Umehluko umayelana nokuphatha amandla. Ngokwendinganisoi-valve yebhola elintantayo^[7], lapho i-valve ivaliwe, ukucindezela komfula kuphusha ibhola kanzima esihlalweni esingezansi. La mandla adala uphawu. Nakuba kuphumelela, lokhu futhi kudala ukungqubuzana okuningi, okungenza i-valve ibe nzima ukuyijika, ikakhulukazi ngobukhulu obukhulu noma ngaphansi kwengcindezi ephezulu. Ai-valve ene-trunnion^[8]ixazulula le nkinga. Ibhola limiswa endaweni yizisekelo ze-trunnion, ukuze lingaphushwa ukugeleza. Ingcindezi esikhundleni salokho iphusha izihlalo ezigcwele intwasahlobo ebholeni elimile. Lo mklamo udonsa amandla amakhulu, okuholela ku-torque ephansi kakhulu (kulula ukuyijika) nempilo ende yezihlalo. Yingakho ekusetshenzisweni kwezimboni ezinomfutho ophezulu, ikakhulukazi embonini kawoyela negesi, ama-trunnion valves ayindinganiso edingekayo. Ezinhlelweni eziningi ze-PVC, izingcindezi ziphansi ngokwanele ukuthi i-valve entantayo isebenza kahle.

Ukuntanta kuqhudelana ne-Trunnion Ikhanda nekhanda

Isiphetho

Izinhlobo ezine zamavalvu eziyinhloko—ezintantayo, i-trunnion, imbobo egcwele, nezimbobo ezincishisiwe—zinikeza izinketho zanoma yiluphi uhlelo lokusebenza. Ukwazi umehluko phakathi kwazo, nezinhlobo ezikhethekile ezifana ne-L-port ne-T-port, kuqinisekisa ukuthi ukhetha kahle.