Gate Valve: Ing gate valve metung yang valve na gagamit gate (gate plate) para gumalaw patayo keng axis ning dalan. Magamit ya keng pipeline para i-isolate ing medium, buri ng sabyan, ganap yang makabuklat o ganap a makasara. Keraklan, e la ustung gate valves para keng pamag-regulate ning danum. Malyari lang gamitan para keng mababang temperatura ampo matas a temperatura ampo pressure, dependi keng materyales ning balbula.
Makanyan man, deng gate valves e la keraklan magagamit kareng pipeline na magdalang slurry o kalupa nang media.
Advantages:
mababa ing resistensya keng likidu.
mangailangan yang mas malating torque para keng pamagbukas ampo pamagsara.
Malyari yang gamitan keng bidirectional flow systems, para paintulutan ne ing medium a mamagus keng adwang direksyun.
Nung makabuklat ya, ing sealing surface mas ditak ya prone keng erosion ibat keng working medium kumpara kareng globe valves.
Simpleng istruktura ampo masanting a prosesu ning pamaglalang.
Compact structure length.
Disbentaha:
Mas maragul a sukad ampo espasyu para keng pamag-install.
Mas matas ing friction ampo wear pilatan da reng sealing surface kabang magbukas ampo magsara, lalu na keng matas a temperatura.
Deng gate valves keraklan atin lang adwang sealing surface, na malyaring magdalang kasakitan keng pamagprosesu, pamaggiling, ampo pamag-maintain.
Mas makaba ing oras ning pamagbukas at pamagsara.
Butterfly ValveIng butterfly valve metung yang valve na gagamit disc-shaped closure element para mag-rotate yang 90 degrees para makabuklat, makasara, ampo maka-regulate keng danum.
Advantages:
Simpleng istruktura, compact a sukad, magaan, ampo mababa ing gagamitan a materyales, inya sa’t masanting ya para kareng maragul a diametru a balbula.
Mabilis yang makabuklat at makasara a maki mababang pamaglaban king danum.
Malyari yang gamitan ing media a maki suspended solid particles at malyari yang gamitan para keng powdery ampo granular media depende keng sikanan ning sealing surface.
Masanting ya para keng bidirectional a pamagbukas, pamagsara, ampo pamagregulate keng bentilasyon ampo pamaglako alikabuk kareng pipeline. Maralas yang magagamit keng metallurgy, light industry, power, ampo petrochemical systems para kareng gas pipelines ampo waterways.
Disbentaha:
Limitadu ing regulasyun ning danum; nung ing balbula makabuklat yang 30%, ing flow rate migit yang 95%.
E ya ustung para kareng matas a temperatura ampo matas a pressure a sistema ning pipeline pauli ning limitasyun keng istruktura ampo kareng materyales a pang-sealing. Keraklan, gagana ya keng temperaturang lalam ning 300°C ampo PN40 o lalam.
Mas mababa ing pamag-seal kumpara kareng ball valves ampo globe valves, inya e ya masanting para kareng aplikasyun a ating matas a sealing requirements.
Ball Valve: Ing ball valve ibat ya keng plug valve, at ing kayang closure element metung yang sphere na mag rotate 90 degrees keng axis ningbalbulastem para akwa ing pamagbukas ampo pamagsara. Ing ball valve mumuna yang gagamitan kareng pipeline para keng pamagsara, pamikalat, ampo pamagbayu ning direksyun ning danum. Deng ball valves a maki V-shaped openings atin lang masanting a flow regulation capabilities.
Advantages:
Minimal a pamaglaban keng danum (halus zero).
Mapanalig a gamit keng corrosive media ampo low boiling point liquids uling e ya makadikit kabang mag-operate ya (alang lubrication).
Makagawa yang kumpletung pamag-seal kilub ning dakal a pressure ampo temperatura.
Mabilis ing pamagbukas ampo pamagsara, kareng mapilan a istruktura na atin lang pamagbukas/pamagsara a 0.05 anggang 0.1 a sigundu, masanting para kareng sistemang automation kareng testing benches a alang epektu keng operasyun.
Automatic a pamagposisyon kareng boundary positions gamit ing ball closure element.
Mapanalig a pamag-seal kareng adwa nang gilid ning medium a gagawan.
Ala yang erosion ing sealing surfaces ibat keng high-speed media nung makabuklat ya o makasara ya.
Compact ampo magaan a istruktura, gagawan neng pekamasanting a istruktura ning balbula para kareng low-temperature media systems.
Ing symmetrical valve body, lalu na keng welded valve body structures, agyu nang tanggapan ing stress ibat kareng pipeline.
Ing closure element agyu nang tanggapan ing matas a pamiyaliwa ning pressure kabang magsara ya. Deng ganap a welded a ball valves malyari lang ikutkut lalam ning gabun, para makasiguradung e la masira deng kilub a sangkap, a maki maximum a bie ning serbisyu a 30 banua, inya sa’t masanting la para kareng pipeline ning langis ampong gas.
Disbentaha:
Ing peka sealing ring material ning ball valve yapin ing polytetrafluoroethylene (PTFE), na inert kareng halus eganaganang kemikal ampo atin yang komprehensibung katangian antimo ing mababang friction coefficient, matatag a performance, resistance keng aging, wide temperature range suitability, ampo masanting a sealing performance.
Makanyan man, ing physical properties ning PTFE, kayabe na ing mas matas a expansion coefficient, sensitivity keng cold flow, ampo ing e masanting a thermal conductivity, kailangan ing design da reng seat seals na makabasi kareng katangian a reni. Uli na niti, nung ing materyales a pang-seal maging yang matibe, ing reliability ning seal maging yang makompromiso.
Dagdag pa, ing PTFE atin yang mababang temperature resistance rating at malyari ya mung gamitan lalam ning 180°C. Lampas na niting temperatura, ing sealing material matua ya. Nung isipan ing makabang panaun a pamangamit, keraklan e ya magagamit babo ning 120°C.
Ing kayang regulating performance mas mababa ya kesa keng globe valve, lalu na deng pneumatic valves (o electric valves).
Globe Valve: Tuturu ya keng valve nung nukarin ing closure element (valve disc) kikimut ya keng libutad ning luklukan. Ing pamiyaliwa ning seat orifice makayagpang ya keng pamaglakbe ning valve disc. Uling keng makuyad a pamagbukas ampo pamagsara na niting uri ning balbula ampo ing kayang mapanalig a shut-off function, ampo ing proportional a relasyun ning pamagbayu ning seat orifice ampo ing pamaglakbe ning valve disc, masanting ya para keng pamagregulate ning danum. Uli na niti, ing klasing balbula ayni keraklan gagamitan de para keng pamagsara, pamagregulate, ampo pamag-throttle.
Advantages:
kabang magbukas ya ampo magsara ya, ing friction force pilatan ning valve disc ampo ing sealing surface ning valve body mas malati ya kesa keng gate valve, inya mas wear-resistant ya.
Ing katas ning pamuklat keraklan 1/4 ya mu ning seat channel, inya mas malati ya kesa keng gate valve.
Keraklan, metung ya mung sealing surface ing valve body ampo ing valve disc, inya mas mayan yang gawan ampo ayusan.
Atin yang mas matas a temperature resistance rating uling ing packing keraklan metung yang timpla ning asbestos ampo graphite. Deng globe valves keraklan gagamitan da la para kareng steam valves.
Disbentaha:
Uling keng pamagbayu ning direksyun ning danum ning medium keng valve, ing minimum a flow resistance ning globe valve mas matas ya kesa kareng aliwang uri da reng valve.
Uling mas makaba ya ing stroke, mas mabagal ing bilis ning pamagbukas kumpara keng ball valve.
Plug Valve: Ing buri nang sabyan metung yang rotary valve a maki closure element a maki pormang cylinder o cone plug. Ing valve plug keng plug valve mipapalibut ya 90 degrees para makakonekta o mikawani ya ing dalan keng katawan ning valve, para akwa ing pamagbukas o pamagsara ning balbula. Ing porma ning valve plug malyari yang cylindrical o conical. Ing kayang prinsipyu kalupa ne ning ball valve, a megawa base keng plug valve at keraklan gagamitan de keng oilfield exploitation ampo kareng petrochemical industries.
Safety Valve: Magsilbi yang proteksyun keng overpressure kareng pressurized a saken, kagamitan, o pipeline. Nung ing pressure kilub ning kagamitan, saken, o pipeline lampas ya keng paintulutan a ulaga, ing balbula automatic yang mibuklat para ilabas ing ganap a kapasidad, para e na la pa miras ing pressure. Nung ing pressure mibaba ya keng metung a ulaga, ing balbula dapat automatic yang magsara agad para protektan ing ligtas a operasyun ning kagamitan, saken, o pipeline.
Steam Trap: King pamagdala king steam, compressed air, ampong aliwang media, ing condensate water ing bubuu. Para makasiguradung efficiency ampo ligtas ing operasyun ning device, kailangan yang i-discharge keng oras deng alang kwenta ampo makasumaming media para a-maintain ing pamangamit ampo ing pamangamit ning device. Atin yang makatuking obra: (1) mabilis yang makapag discharge condensate water a megawa. (2) pipigilan na ing pamagtagas ning singaw. (3) ilako na.
Pressure Reducing Valve: Metung yang balbula na babawasan ing inlet pressure keng buri nang outlet pressure kapamilatan ning pamag-adjust at magdependi ya keng enerhiya ning medium mismu para automatic yang manatili ing stable outlet pressure.
Check Valve: Kilala ya naman bilang non-return valve, backflow preventer, back pressure valve, o one-way valve. Deng balbula automatic lang mibuklat ampo misara kapamilatan ning pwersa a gagawan ning dagus ning medium keng pipeline, inya sa’t metung lang uri ning automatic valve. Deng check valve magagamit la kareng pipeline systems at ing karelang peka-obra ilapin deng makaiwas keng medium backflow, makaiwas keng pamagbaliktad da reng pump ampo driving motors, ampo makaluwal container media. Deng check valves malyari la namang gamitan kareng pipelines a magsupply kareng auxiliary systems nung nukarin ing pressure malyari yang mitas babo ning pressure ning sistema. Malyari lang i-categorize keng rotary type (mag-rotate base keng center of gravity) ampo lift type (mag-move along keng axis).
Oras ning pamagpost: Jun-03-2023
