Izindaba - Yibaphi abahlinzeki be-Shutdown Valve abayi-10 abaphambili emhlabeni

Abahlinzeki abayi-10 abaphambili bama-valve okuvala bahlanganisa izinkampani ezilandelayo ezaziwayo

Emerson, e-USA:

Uhlobo lwe-Fisher ngaphansi kuka-Emerson lugxile kuma-valve okulawula izinqubo, asetshenziswa kabanzi emikhakheni kawoyela, igesi, amakhemikhali kanye neminye imikhakha.

ISchumberger, e-USA:

UCameron ngaphansi kukaSchlumberger uhlinzeka ngama-valve kanye nemishini yemithombo yemithombo yemboni kawoyela negesi.

I-Flowserve, e-USA:

Ihlinzeka ngama-valve ahlukahlukene ezimboni, kufaka phakathi ama-valve okulawula, ama-valve ebhola, ama-valve e-butterfly, njll., akhonza izimboni zamandla, amakhemikhali kanye nokwelashwa kwamanzi.

I-Tyco International, e-USA:

Uhlobo lwayo lwe-Tyco Valves & Controls luhlinzeka ngama-valve okuvikela umlilo, ukusetshenziswa kwezimboni kanye nezentengiselwano.

I-KITZ, eJapane:

Omunye wabakhiqizi abakhulu bama-valve eJapane, onemikhiqizo ehlanganisa amasimu ezimboni, ezokwakha kanye nezomphakathi.

IMI, e-UK:

Ubunjiniyela Obubalulekile be-IMI bugxile kuma-valve ezimboni asezingeni eliphezulu, akhonza izimboni zamandla, amandla kanye namakhemikhali.

ICrane, e-USA:

I-Crane ChemPharma & Energy yomkhiqizo wayo inikeza izixazululo zama-valve zezimboni zamakhemikhali, ze-petrochemical kanye nezamandla.

I-Velan, eCanada:

Igxila kuma-valve ezimboni, kufaka phakathi ama-valve esango, ama-valve ebhola, ama-valve e-butterfly, njll.

I-KSB, eJalimane:

Ihlinzeka ngezixazululo zephampu namavalvu, ezisetshenziswa kabanzi ekwelapheni amanzi, emandleni nasezimbonini.

Iqembu le-Weir, e-UK:

I-Weir Valves & Controls yayo igxile kuma-valve asebenza kahle kakhulu embonini yezimayini, kagesi kanye ne-oyili negesi.

Amathiphu:NUmkhiqizi we-SW Valveingumhlinzeki wama-valve okuvala odumile eShayina. Banefektri yabo yomzimba wama-valve okuvala kanye nefektri ye-actuator yama-valve okuvala. Bangakunikeza ukwesekwa kobuchwepheshe obuchwepheshile kanye namanani efektri yama-valve okuvala.

I-Valve Yokuvala (i-SDV)

Iyini i-Shutdown Valve (SDV)

I-valve yokuvala iwuhlobo lwe-actuator ohlelweni lokuzenzakalela. Iqukethe i-actuator ye-diaphragm ye-pneumatic enezintwasahlobo eziningi noma i-actuator ye-piston entantayo kanye ne-valve elawulayo. Isetshenziswa kakhulu ukusika noma ukuxhuma ngokushesha uketshezi olusepayipini (njengegesi, umoya ovuthayo, umoya obandayo kanye negesi yoketshezi, njll.). Isetshenziswa kabanzi ezinhlelweni zokulawula ukuphepha kwezimboni kanye nokuphathwa kwezingozi eziphuthumayo.

Umsebenzi Oyinhloko kanye Nomgomo Wokusebenza weValve Yokuvala

Umsebenzi oyinhloko wevalvu yokuvala ukunqamula ngokushesha, ukuxhuma noma ukushintsha uketshezi olusepayipini ngokwamukela isignali yethuluzi lokulawula (njenge-alamu yokucindezela, izinga lokushisa noma ukuvuza). Ukuhamba kwayo okuvamile kuhlanganisa:

Isiqalisi sesiginali:Uma inzwa ithola okungajwayelekile (njengokuvuza kwegesi, ingcindezi edlula umkhawulo), isignali idluliselwa ku-actuator.

Impendulo yemishini:I-diaphragm noma indlela ye-piston eqhutshwa umoya iqhuba umzimba we-valve ukuthi ushukume (njenge-ball valve, i-single seat valve), ishintsha isimo sokuvula nokuvala kwe-valve.

Ukhiye wokuphepha:Ngemva kokuba ivalvu yokuvala ephuthumayo ivaliwe, ivame ukuklanywa ukuthi ibe sesimweni sokuzikhiya ukuze igweme ukuvulwa ngengozi.

Izinhlobo eziyinhloko kanye nezimo zokusetshenziswa kwe-valve yokuvala

Amavalvu okuvalazingahlukaniswa ngezinhlobo ezilandelayo ezivamile ngokuya ngesakhiwo kanye nenhloso yazo:

‌Ama-valve okuvala ajwayelekile:isetshenziselwa ukulawula inqubo yezimboni (njengemboni yamakhemikhali kanye ne-metallurgy), ikakhulukazi isebenzisa i-ball valve noma isakhiwo se-sleeve valve ukuze kufezwe umthethonqubo ophakathi nendawo wokuvula.

I-valve yokuvala ephuthumayo:ezinikezelwe ezinhlelweni zokuphepha (njengemipayipi yegesi kanye nezinhlelo ze-SIS), ngesivinini sokuphendula esisheshayo kanye nomsebenzi wokuzikhiya ukuze kuvinjelwe izingozi ukuthi zingakhuli.

I-valve yokuvala i-diaphragm ye-pneumatic:ivalvu ilawulwa yi-diaphragm eqhutshwa umfutho womoya, efanelekela izimo zokulawula ezenzakalelayo ezikude (njengezimboni zikawoyela namandla).