Pamipakilala ning Butterfly Valve

Pagpapakilala:

metung a balbula a parulibat ya keng pamilya da reng balbula a ausan dangquarter-turn valves. keng operasyun, ing balbula makabuklat ya o makasara ya nung ing disc mibalikid ya keng kapat a liko. Ing "butterfly" metung yang metal a disc a maka-mount keng baras. Nung makasara ya ing balbula, mibalikid ya ing disc ban lubus yang makasara king dalan. Nung ing balbula lubus yang makabuklat, ing disc mipapalibut yang metung a kapat a liko bang paintulutan ing halus alang pamagbawal a pamagdalan ning likidu. Ing balbula malyari ya namang buklat bagya-bagya para mag-throttle flow.

Atin yang miyayaliwang klasing butterfly valves, balang metung makayagpang ya para kareng miyayaliwang pressure ampo miyayaliwang gamit. Ing zero-offset butterfly valve, na gagamit keng flexibility ning goma, atin yang pekababang pressure rating. Ing high-performance double offset butterfly valve, magagamit ya keng mas matas a pressure a sistema, maka offset ya keng sentru ning disc seat ampo ing body seal (offset metung), ampo ing sentru ning bore (offset adwa). Iti gagawang cam action kabang mag-operate ya para itas ne ing luklukan keng seal na magresulta keng mas ditak a friction kesa keng zero offset design ampo mabawas ing kayang tendency na mag-wear. Ing valve a pekamasanting para kareng high-pressure a sistema yapin ing triple offset butterfly valve. Kening valve ayni ing disc seat contact axis maka offset ya, na gagawan na para ala yang sliding contact ing disc ampo ing seat. keng kasu da reng triple offset valves ing luklukan gawa ya keng metal para malyari yang i-machine para mika bubble tight shut-off nung makayabe ya keng disc.

Uri

1. Concentric butterfly valves– ining uri ning balbula atin yang matatag a luklukan a goma a maki metal a disc.
2. Double-eccentric butterfly valves(high-performance butterfly valves o double-offset butterfly valves) – miyayaliwang uri ning materyales ing gagamitan para keng luklukan ampo disc.
3. Triply-eccentric butterfly valves(triple-offset butterfly valves) – deng luklukan malyari lang laminated o solidung metal a luklukan a disenyu.

Wafer-style butterfly valves

Ingwafer style butterfly valvedinisenyu ya para manatili ing seal laban keng bi-directional pressure differential para aiwasan ing nanu mang backflow kareng sistemang dinisenyu para keng unidirectional flow. gagawan na iti kapamilatan ning masipit a seal; ie, gasket, o-ring, precision machined, ampo metung a patag a lupa ning balbula keng babo ampo lalam ning balbula.

Lug-style butterfly valve

Lug-style valvesatin yang threaded inserts keng adwa nang gilid ning valve body. Iti paintulutan nala para i-install la keng sistema gamit ing adwang set a bolts ampo alang nuts. Ing balbula maka-install ya pilatan da reng adwang flange gamit ing miyayaliwang set da reng bolts para kareng balang flange. Ing setup ayni paintulutan na ing metung a gilid ning piping system na maputol ya alang makagulu keng aliwang gilid.

Ing lug-style butterfly valve a gagamitan keng dead end service keraklan atin yang mababang pressure rating. Alimbawa, ing lug-style butterfly valve a makabili pilatan da reng adwang flanges atin yang 1,000 kPa (150 psi) a pressure rating. Ing pareung balbula a maka-mount keng metung a flange, keng dead end service, atin yang 520 kPa (75 psi) a rating. Deng lugged valves sobra lang resistant kareng chemical ampo solvents ampo agyu da ing temperatura anggang 200 °C, inya sa’t metung yang versatile a solusyun.

Gamitan keng industriya

keng pharmaceutical, chemical, ampo food industries, ing butterfly valve magagamit ya para a-interrupt ing daloy ning produktu (solid, liquid, gas) kilub ning prosesu. Deng balbula a gagamitan da reng industriya a reni keraklan gagawan da la agpang kareng tuntunan ning cGMP (kasalukuyan a masanting a paralan ning pamaglalang). Deng butterfly valves keraklan papalitan do reng ball valves kareng dakal a industriya, partikular ing petrolyo, uling mas mababa ing gastus ampo mas mayan ing pamag-install, pero deng pipeline a maki butterfly valves e la malyaring 'pigged' para keng pamaglinis.

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