Gate valve hi general valve hman tlanglawn zawk a ni a, hman lar zawk a ni a, tui humhalhna, metallurgy leh industry dang dangah hman a ni ber a, a hnathawh dan zau tak chu market-in a hrechiang tawh a, TWS hian quality leh technical supervision leh testing hnaah kum tam tak chhung chu, gate valve hmuhchhuah bakah hian research engemaw zat an nei a, mahse gate valve hman dan, troubleshooting leh aspect dangte pawh uluk zawk leh uluk zawka zirchianna an nei bawk.
Gate valve structural shape hrang hrang a zirin gate valve hi chi hnih ah then theih a ni a, wedge type leh parallel type te an ni.
Wedge gate valve gate plate chu wedge ang maia siam a ni a, sealing surface chu channel center line-ah a innghat a, gate plate leh valve seat inkar wedge chu sealing (closing) neih nan hman a ni. Wedge plate hi gate pakhat emaw, gate pahnih emaw pawh a ni thei.
Parallel gate valve-a sealing surface te hi a inzawm tlat a, channel center line-ah perpendicular a ni a, chu chu chi hnih ah then a ni a: opening mechanism nei leh nei lo. Double ram a awm a, bracing mechanism a awm a, ram chu a tlak chuan parallel ram pahnih wedge chu valve seat-ah inclined plane hmangin a innghat a, flow channel chu a cut a, ram a sang a, a inhawng a, wedge chu ram mating surface atanga a inthen a, ram chu a san zawng engemaw chen a sang a, wedge chu ram chunga boss chuan a chelh chho a ni. Ram chu parallel valve seat surface pahnih zawhin valve seat-ah a tlan lut a, chu chuan fluid pressure hmangin valve outlet side-a valve body-a ram chu press a, fluid chu seal a ni.
Gate hawn leh khar huna valve stem che dan hrang hrang a zirin gate valve te hi chi hnih ah then a ni a, chungte chu rising stem gate valve leh concealed stem gate valve te an ni. Rising stem gate valve-a valve stem leh gate chu hawn emaw khar emaw a nih chuan a rualin a sang leh a tla a; concealed stem gate valve hawn emaw khar emaw a nih chuan valve stem chauh a inher a, valve stem sang leh tlak chu hmuh theih a ni lo va, valve plate chu a sang emaw a tla emaw a ni. Rising stem gate valve thatna chu channel hawnna san zawng hi valve stem san zawng atanga teh theih a ni a, mahse occupied height erawh a tawi thei a ni. Handwheel emaw handle emaw lam hawi chuan handwheel emaw handle emaw chu darkar lam hawiin her la, valve khar rawh.
2. Gate valve atana hun hman dan leh thlan dan tur
01. Gate valve flat tak a ni
Flat gate valve hman hun tur:
(1) Oil leh natural gas pipeline. Diversion hole nei flat gate valve pawh pipeline tihfai nan a awlsam hle.
(2) Oil thianghlim siamna tur pipeline leh dahna hmanrua.
(3) Oil leh natural gas siamchhuahna hmun.
(4) Pipeline-ah chuan suspended particle media a awm.
(5) Khawpui chhunga gas thawn chhuahna pipeline.
(6) Tui pekna tur project hrang hrang.
Flat gate valve thlan dan tur chu:
(1) Oil leh natural gas transmission pipeline atan chuan plate gate valve pakhat emaw double gate emaw nei thlan a ni. Pipeline tihfai i mamawh chuan open-rod flat gate valve, ram pakhat leh diversion hole nei thlang rawh.
(2) Refined oil phurh chhuahna pipeline leh dahna hmanrua atan chuan diversion hole nei lo single emaw double gate nei flat gate valve thlan a ni.
(3) Oil leh natural gas exploitation port device atan chuan flat gate valve, single emaw double gate plate nei, dark rod floating valve seat leh diversion hole nei chu thlan a ni.
(4) Suspended particle media nei pipeline tan chuan knife ang chi flat gate valve thlan a ni.
(5) Khawpui chhunga gas transmission pipeline atan chuan single gate emaw double gate plate soft sealing open rod flat gate valve thlan a ni.
(6) Tui supply project atan chuan single gate emaw double gate valve emaw diversion hole nei lo open rod flat gate valve thlan a ni.
02. Wedge gate valve a ni
Wedge gate valve hmanna hun: valve chi hrang hrangah chuan gate valve hi hman lar ber a ni a, a tlangpuiin full open emaw full closed emaw atan chauh a tha a, adjustment leh throttling atan hman theih a ni lo.
Wedge gate valve hi a tlangpuiin valve pawn lam dimension-a thil tih tur khauh tak awm lohna hmunah hman a ni a, hman dan pawh a khauh zawk. Entirnan, working medium temperature sang leh pressure sang takah chuan closing parts te chu rei tak sealed a ngai a.
A tlangpuiin pressure sang, pressure sang cut-off (pressure danglamna lian tak), pressure hniam cut-off (pressure danglamna tenau), noise hniam, cavitation leh vaporization, temperature sang medium, temperature hniam (cryogen), wedge gate valve hman a tha. Entirnan, electric power industry, petroleum smelting, petrochemical industry, offshore oil, tap water engineering leh khawpui sakna lama sewage treatment engineering, leh chemical industry-ah te hman a ni nasa hle.
Selection principle: 1.1.
(1) Valve-a fluid awm dan tur mamawh. Gate valve hi hnathawhna hmun atan thlan a ni a, flow resistance tlem, flow capacity chak, flow characteristic tha leh sealing khauh tak mamawh a ni.
(2) Temperature sang leh pressure sang medium. Pressure sang steam, temperature sang leh pressure sang oil ang chi te hi a ni.
(3) Temperature hniam (cryogen) medium. Liquid ammonia, liquid hydrogen, liquid oxygen leh media dangte ang chi te.
(4) Pressure hniam leh diameter lian. Tap tui project, bawlhhlawh sawngbawlna project ang chi te.
(5) Khawpui chhunga gas thawn chhuahna pipeline.
(6) Tui pekna tur project hrang hrang.
Flat gate valve thlan dan tur chu:
(1) Oil leh natural gas transmission pipeline atan chuan plate gate valve pakhat emaw double gate emaw nei thlan a ni. Pipeline tihfai i mamawh chuan open-rod flat gate valve, ram pakhat leh diversion hole nei thlang rawh.
(2) Refined oil phurh chhuahna pipeline leh dahna hmanrua atan chuan diversion hole nei lo single emaw double gate nei flat gate valve thlan a ni.
(3) Oil leh natural gas exploitation port device atan chuan flat gate valve, single emaw double gate plate nei, dark rod floating valve seat leh diversion hole nei chu thlan a ni.
(4) Suspended particle media nei pipeline tan chuan knife ang chi flat gate valve thlan a ni.
(5) Khawpui chhunga gas transmission pipeline atan chuan single gate emaw double gate plate soft sealing open rod flat gate valve thlan a ni.
(6) Tui supply project atan chuan single gate emaw double gate valve emaw diversion hole nei lo open rod flat gate valve thlan a ni.
02. Wedge gate valve a ni
Wedge gate valve hmanna hun: valve chi hrang hrangah chuan gate valve hi hman lar ber a ni a, a tlangpuiin full open emaw full closed emaw atan chauh a tha a, adjustment leh throttling atan hman theih a ni lo.
Wedge gate valve hi a tlangpuiin valve pawn lam dimension-a thil tih tur khauh tak awm lohna hmunah hman a ni a, hman dan pawh a khauh zawk. Entirnan, working medium temperature sang leh pressure sang takah chuan closing parts te chu rei tak sealed a ngai a.
A tlangpuiin pressure sang, pressure sang cut-off (pressure danglamna lian tak), pressure hniam cut-off (pressure danglamna tenau), noise hniam, cavitation leh vaporization, temperature sang medium, temperature hniam (cryogen), wedge gate valve hman a tha. Entirnan, electric power industry, petroleum smelting, petrochemical industry, offshore oil, tap water engineering leh khawpui sakna lama sewage treatment engineering, leh chemical industry-ah te hman a ni nasa hle.
Selection principle: 1.1.
(1) Valve-a fluid awm dan tur mamawh. Gate valve hi hnathawhna hmun atan thlan a ni a, flow resistance tlem, flow capacity chak, flow characteristic tha leh sealing khauh tak mamawh a ni.
(2) Temperature sang leh pressure sang medium. Pressure sang steam, temperature sang leh pressure sang oil ang chi te hi a ni.
(3) Temperature hniam (cryogen) medium. Liquid ammonia, liquid hydrogen, liquid oxygen leh media dangte ang chi te.
(4) Pressure hniam leh diameter lian. Tap tui project, bawlhhlawh sawngbawlna project ang chi te.
(5) Installation hmun: installation san zawng a tlem chuan dark rod wedge gate valve thlan a ni a; A san zawng a tihtlem loh chuan open rod wedge gate valve chu thlan a ni.
(6) A hawn kim emaw, a khar kim theih emaw, adjustment leh throttling atana hman theih loh hunah chauh wedge gate valve chu thlan theih a ni.
3. Thil dik lo awm fo leh enkawl dan
01. Gate valve-a chhiatna awm fo leh a chhan
Gate valve hman a nih hnuah a hnuaia harsatna te hi medium temperature, pressure, corrosion leh contact tin a relative movement avang hian a awm fo thin.
(1) Leakage: A chi hnih a awm a, chungte chu pawn lam atanga leakage leh internal leakage te an ni. Valve pawn lama leakage awm chu leakage an ti a, stuffing box leh flange connection-ah te leakage hi a awm fo thin.
Stuffing box a leak chhan: a packing chi hrang hrang emaw, quality emaw hian a mamawh a tlin lo; Kum upa lam packing emaw stem wear emaw; Loose packing gland Stem chung lamah abrasion a awm.
Flange connection leak chhan: gasket material emaw size emaw hian a mamawh a tlin lo; Flange sealing surface-a processing quality tha lo; connecting bolt-te khauh taka tihkhauh loh; Piping hi a configure tha lo a, hei vang hian joint-ah load additional tam lutuk a awm thin.
Valve chhunga leakage awm chhan: Valve khar loose avanga leakage awm chu internal leakage a ni a, chu chu valve sealing surface emaw sealing ring loose root emaw a chhiat vang a ni.
(1) Corrosion hi valve body, valve cover, valve stem leh flange sealing surface a corrosion vang a ni fo thin. Corrosion hi medium hnathawh vang a ni ber a, mahse filler leh gasket atanga ion chhuah avanga nghawng a awm bawk.
(2) Abrasion: local surface brushing emaw peeling phenomenon, ram leh valve seat te chu contact specific pressure engemaw zat hnuaia relative motion-a an awm laiin a thleng thin.
02. Enkawlna turgate valve te a awm bawk
(1) Valve pawn lam atanga leak awm siamthat
Packing i press dawnin gland bolt chu symmetrically-in a hnawih tur a ni a, chu chuan gland a tilt loh nan leh compression atan gap a awmtir tur a ni. Packing press rual hian valve stem chu valve stem vel a packing chu a inang tlang theih nan a inher tur a ni a, pressure chu a thi lutuk lo tur a ni a, chutiang chuan valve stem rotation a nghawng lo ang a, packing a wear a tipung ang a, service life pawh a ti tawi ang. Valve stem chunglam hi abrasive a ni a, chuvang chuan medium chu a leak chhuak awlsam a, hman hmain valve stem chunglam a hliam awmte tihbo nan process a ngai a ni.
Flange connection leakage atan chuan gasket a chhiat chuan thlak leh tur a ni; Gasket-a thil siam tur chu thlan dik a nih loh chuan hmanna atana mamawh phuhruk thei tur thil thlan tur a ni a; Flange sealing surface processing quality a tha lo a nih chuan flange sealing surface chu lakchhuah a ngai a, a qualified hma loh chuan reprocess leh tur a ni.
Chu bakah, flange bolt te khauh taka tihkhauh te, pipe siam dan dik te, flange connection-a load dang tam lutuk awm lohna te hi flange joint-a leakage awm lohna turin a tha vek a ni.
(2) Valve chhunga leakage awmte siamthat
Internal leak siamthatna chu sealing surface chhiatna leh root-a loose sealing (sealing ring chu valve plate emaw thread hmanga seat emaw-a press a nih chuan) tihbo nan a ni. Sealing surface chu valve body leh valve plate-ah direct-a process a nih chuan loose root leh leakage-ah harsatna a awm lo.
Sealing surface a chhiat nasa hle a, sealing surface chu sealing ring atanga siam a nih chuan ring hlui chu la chhuakin sealing ring thar dah tur a ni Sealing surface chu valve body-ah direct-a machine hmanga siam a nih chuan sealing surface chhia chu lakchhuah hmasak tur a ni a, chutah chuan sealing ring thar emaw machined surface emaw chu ground-in sealing surface thar siam tur a ni. Sealing surface-a scratches, bumps, crushes, dents leh defects dangte chu 0.05mm aia tlem a nih chuan grinding hmangin tihbo theih a ni.
Seal ring chu press-in leh fix a nih chuan PTFE tape emaw white thick paint emaw chu valve seat emaw seal ring groove hnuaiah dah theih a ni a, chutah chuan seal chhungah press lutin seal ring zung chu a khat thei a Seal thread a nih chuan thread inkarah fluid a leak loh nan PTFE tape emaw white paint emaw dah tur a ni.
(3) Siamthat lehvalve a nicorrosion a awm
A tlangpuiin valve body leh bonnet chu a inang tlangin a corroded a, valve stem erawh chu pitted a ni fo thung. Siamthat dawnin corrosion products te chu lakchhuah hmasak tur a ni a, pitting pits nei valve stem chu lathe-ah process tur a ni a, chu chuan depression a awm lo va, chu ai chuan slow-release agent awmna packing chu hman tur a ni a, a nih loh leh packing chhunga valve stem-a corrosive effect nei ion te paih chhuah nan packing chu distilled water hmanga tihfai tur a ni.
(4) Sealing surface-a abrasion awmte siamthat
A hman danah chuanvalve a ni, sealing surface chu a theih ang anga abrasion lo turin ven tur a ni a, valve khar a nih chuan torque a lian lutuk tur a ni lo. Sealing surface chu abrasive a nih chuan grinding hmangin a bo thei.
Palinaah chuan gate valve hmuhchhuah a ni
Tuna market boruak leh user mamawhnaah hian iron gate valve hian a tam zawk a luah a ni. Product quality inspector kan nih angin product quality endik dan kan hriat chian bakah hian product ngei pawh kan hriatthiam a ngai a ni.
01. Thir gate valve test dan tur
Iron gate valve testing hi ram pum huap standard GB/T12232-2005 “General Valve Flange Connection Iron Gate Valve” hmanga test a ni.
02. Thir gate valve enfiahna tur thil
A bik takin: mark, small wall thickness, pressure test, shell test, etc. te hi a ni a, chung zingah chuan wall thickness, pressure, shell test hi enfiahna thil tul tak a ni a, mahse key item pawh, thil inmil lo a awm chuan, unqualified product anga direct-a ngaihtuah theih a ni.
A tawi zawngin, product quality inspection hi product inspection pumpuiah thil pawimawh tak a ni a, a pawimawhna chu a takin a lang a, front-line inspection staff kan nih angin anmahni quality kan tihchak zel a ngai a, product inspection-a hna tha tak thawk tur chauh ni lovin, product inspection chungchangah hriatthiamna kan neih theih nan, inspection-ah hna tha zawk kan thawh theih nan.
Tianjin Tanggu Tui-Seal Valve Co.,ltda bik takin resilient seated an siam chhuakbutterfly valve a ni, .gate valve a ni, .Y-strainer hmanga siam a ni, balancing valve, check valve, balancing valve, back flow venna etc. te a ni.
Post hun chhung: Dec-26-2024
