I-valve yesangoiwumkhiqizo wenguquko yezimboni. Nakuba eminye imiklamo yama-valve, njengama-valve embulunga nama-plug valve, isinesikhathi eside ikhona, ama-valve esango abambe isikhundla esivelele embonini amashumi eminyaka, futhi muva nje anikeze isabelo esikhulu semakethe kuma-valve ebhola nama-valve uvemvane. .

Umehluko phakathi kwe-valve yesango ne-valve yebhola, i-valve yepulaki kanye ne-butterfly valve ukuthi isici sokuvala, esibizwa ngokuthi i-disc, isango noma i-occluder, iphakama ngaphansi kwesiqu se-valve noma i-spindle, ishiye umzila wamanzi futhi ingene phezulu, ebizwa ngokuthi ibhonethi, futhi izungezisa ku-spindle noma ukuphotha amajika amaningi. Lawa mavalvu avuleka ngokuhamba komugqa aziwa nangokuthi ama-valve ama-multi turn or linear, ngokungafani nama-quarter turn valve, anesiqu esizungeza ama-degree angu-90 futhi angavuki ngokuvamile.

Ama-valve esango atholakala ngenqwaba yezinto ezihlukene kanye nezilinganiso zokucindezela. Zihluka ngosayizi ukusuka ku-NPS elingana isandla sakho ½ Intshi ukuya kweloli elikhulu i-NPS 144 intshi. Ama-valve esango ahlanganisa ama-castings, ama-forging, noma izakhi ezenziwe ngokushisela, nakuba umklamo wokuphonsa ubusa.

Esinye sezici ezifiseleka kakhulu zama-valve esango ukuthi angavulwa ngokugcwele ngokuvinjelwa okuncane noma ukungqubuzana emigodini yokugeleza. Ukumelana nokugeleza okuhlinzekwa yi-valve yesango elivulekile kucishe kufane nengxenye yepayipi enosayizi wembobo efanayo. Ngakho-ke, ama-valve esango asacatshangelwa ngokuqinile ukuvimbela noma ukuvala / ukuvala izinhlelo zokusebenza. Kwamanye ama-nomenclature ama-valve, ama-valve esango abizwa ngokuthi ama-globe valves.

Amavalvu esango ngokuvamile awafaneleki ukulawula ukugeleza noma ukusebenza kunoma iyiphi indlela ngaphandle kokuvuleka okugcwele noma ukuvala ngokugcwele. Ukusebenzisa i-valve yesango elivuleke kancane ukuze umpintshise noma ulawule ukugeleza kungase kulimaze ipuleti le-valve noma iringi yesihlalo se-valve, ngoba endaweni egeleza kancane evuleke kancane edala isiyaluyalu, izindawo zokuhlala zizoshayisana.

Isitayela se-valve yesango

Ngaphandle, ama-valve amaningi esango abukeka afana. Nokho, kunamathuba amaningi okuklama ahlukene. Amavalvu amaningi esango ahlanganisa umzimba kanye nebhonethi, equkethe isici sokuvala esibizwa ngokuthi i-disc noma isango. Isici sokuvala sixhunywe esiqwini esidlula kubhonethi futhi ekugcineni siye esondweni lesandla noma enye idrayivu ukuze isebenze isiqu. Ukucindezela okuzungeze isiqu se-valve kulawulwa ukupakishwa okucindezelwa endaweni yokupakisha noma ekamelweni.

Ukunyakaza kwepuleti le-valve yesango kusiqu se-valve kunquma ukuthi isiqu se-valve siyakhuphuka noma izikulufu ku-valve plate ngesikhathi sokuvula. Lokhu kusabela kuphinde kuchaze izitayela ezimbili eziyinhloko zesiqu/zediski zamavalvu esango: isiqu esikhuphukayo noma isiqu esingavuki (NRS). Isiqu esikhulayo yisitayela sokuklama esidume kakhulu se-stem/disc emakethe yezimboni, kuyilapho isiqu esingakhuphuki kudala sithandwa yimboni yokusebenza kwamanzi namapayipi. Ezinye izinhlelo zokusebenza zemikhumbi ezisasebenzisa ama-valve esango futhi zinezikhala ezincane nazo zisebenzisa isitayela se-NRS.

Idizayini ye-stem/bonnet evame kakhulu kumavalvu ezimboni intambo yangaphandle nejoka (OS&Y). Idizayini ye-OS&Y ifaneleka kakhulu ezindaweni ezibolayo ngoba imicu itholakala ngaphandle kwendawo ewuketshezi. Ihluke kwezinye imiklamo ngokuthi isondo lesandla linamathele esihlahleni phezulu kwejoka, hhayi esiqwini ngokwaso, ukuze isondo lesandla lingavuki lapho i-valve ivuliwe.

Ukuhlukaniswa kwemakethe ye-valve yesango

Nakuba eminyakeni engu-50 edlule, ama-valve e-rotary angle angakwesokudla abe nesabelo esikhulu emakethe yamavalvu esango, ezinye izimboni zisathembele kakhulu kuwo, okuhlanganisa imboni kawoyela negesi. Nakuba amavalvu amabhola ethuthuke kakhulu kumapayipi egesi yemvelo, uwoyela ongahluziwe noma amapayipi oketshezi asayindawo yamavalvu esango ahleziyo ahambisanayo.

Endabeni yobukhulu obukhulu, ama-valve esango aseyisinqumo esiyinhloko sezinhlelo zokusebenza eziningi embonini yokucwenga. Ukuqina komklamo kanye nezindleko eziphelele zobunikazi (kuhlanganise nomnotho wokunakekela) amaphuzu afiselekayo alo mklamo wendabuko.

Mayelana nokusetshenziswa, izinqubo eziningi zokucwenga zisebenzisa amazinga okushisa aphezulu kunezinga lokushisa eliphephile lokusebenza le-Teflon, okuyisihlalo esiyinhloko samavalvu ebhola antantayo. Ama-valve ovemvane asebenza kahle kanye nama-valve ebhola avalwe ngensimbi aseqala ukusetshenziswa kakhulu ezinhlelweni zokucwenga, nakuba izindleko zawo eziphelele zobunikazi ngokuvamile ziba phezulu kunalezo zamavalvu esango.

Imboni yezitshalo zamanzi isabuswa amavalvu esango lensimbi. Ngisho nasezintweni ezingcwatshiwe, zishibhile futhi zihlala isikhathi eside.

Imboni yamandla isebenzisaama-valve esango le-alloyngezinhlelo zokusebenza ezibandakanya ukucindezela okuphezulu kakhulu namazinga okushisa aphezulu kakhulu. Nakuba amanye amavalvu eglobhu ohlobo lwe-Y amasha kanye namavalvu ebhola ahlezi ensimbi aklanyelwe ukuvimba atholwe endaweni yokuphehla amandla, amavalvu esango asathandwa abaklami bezitshalo nabasebenzi.