Gate valveubedo valve ma tiyo ku piny matung tung ma tiyo ku yore madwong. Jutiyo kudu lee i gwoko pii, yubu cuma man tic mange. Tic pare matung tung ungiyu i soko. Mi medo ikum somo pa gate valve, etimo bende somo ma pire tek man ma iyere ikum tic man cobo peko pavalves mi dhugola.
Ma e piny eni ubedo wec madit ikum kit ma juyubu kudu, tic kudu, cobo peko, neno ber pa piny man lembe mukende mapol ikumvalves mi dhugola.
1. Kit ma juyubu kudu
Kite mavalve mi dhugola: kuvalve mi dhugolautiye valve ma tiyo ku gate plate man valve seat pi doro yabo man cego.Gate valvepol ne uketho i iye valve body, valve seat, gate plate, valve stem, bonnet, stuffing box, packing gland, stem nut, handwheel man mange de. Nimakere ku aloka loka pa kabedo ma rwate ikind dhugola ku valve seat, dit pa channel copo lokere man channel copo juku. Pi timovalve mi dhugolacego matek, kabedo pa gate plate man valve seat utiye piny.
Nimakere ku kit gedo matung tung pavalves mi dhugola, gate valves jupoko gi ni wedge type man parallel type.
Dhugola pa wedgevalve mi dhugolautiye calu wedge, man kabedo mi cego ubedo angle ma oblique ku line mi dyere pa channel, man wedge ikind dhugola ku valve seat jutiyo kudu pi ketho sealing (closing). Wedge plate copo bedu ram acel nyo ram aryo.
Kabedo ma juketho i iye parallel gate valve utiye parallel ku wadi man perpendicular ku centre line pa channel, man utiye kit aryo: ku yore mi nyai man ma yore mi nyai ope. Utiye rombe ario ma gitiye ku yore mi nyai. Ka rams udok piny, wedges pa rams aryo ma rwate bino poko rams aryo iwi valve seat ikum piny ma ucungo pi juku pii. Ka rams ucungu man oyabere, wedges ku gates bibedo The matching surface of the plate is separated, gate plate utingo nitundo i bor moku, man wedge jukonyo ku boss iwi gate plate. Dhugola ario ma epe ku yore mi nyai, ka dhugola ne ucwale i kom valve iwi kom aryo ma rwate, tego pa pii jutiyo kudu pi diyo dhugola ikum kum valve i thenge mi wok pa valve ni juku pii.
Nimakere ku wotho pa valve stem ka dhugola oyabe man cego, gate valve jupoko i dul aryo: rising stem gate valve man concealed stem gate valve. Valve stem man gate plate pa rising stem gate valve ucungo man podho i sawa acel ka juyabe nyo cego; ka valve mi dhugola mi stem ma ungire oyabe nyo cego, valve stem kende re ma lokore, man tingo pa valve stem copo nen ungo, man valve plate utingo nyo podho. Ber pa rising stem gate valve utiye nia bor pa channel copo bedu nimakere ku rising height pa valve stem, ento bor pa valve copo bedu ma nok. Ka inen cing cing nyo cing cing, lok cing cing nyo cing cing yo yo pa sawa mi cego valve.
2. Kare man cik mi yero pa gate valves
01. Flatvalve mi dhugola
Kare mi tic ku slab gate valve:
(1) Pi pipeline mi oil man natural gas, flat gate valve ku vur mi loko pii de yot ni lwoko pipeline.
(2) Pipelines man jam tic mi gwoko moo ma juyubu.
(3) Tic ku jam tic mi dhugola pi oil man natural gas.
(4) Pipelines ku suspended particle media.
(5) Pipeline mi gas mi adhura.
(6) Tic mi pii.
Cik mi yero slabvalve mi dhugola:
(1) Pi pipeline mi oil man natural gas, ti ku slab acel nyo aryovalves mi dhugola. Ka mitire ni yweyu pipeline, ti ku dhugola acel ku dhugola ma oyabere.
(2) Pi pipeline mi tero piny man jam gwoko moo ma juyiko, flat gate valve ku single ram nyo double ram ma upe ku vur mi loko piny juyeru.
(3) Pi ketho kabedo mi kwanyo moo man yamo, juyeru valve mi dhugola acel nyo dhugola aryo ku kom ma ucungo iwi pii man vur mi loko piny.
(4) Pi pipelines ku suspended particle media, juyeru slab gate valves ma nen calu pala.
(5) Pi pipeline mi gas mi adhura, ti ku dhugola acel nyo dhugola aryo ma juketho i iye rising rod flat gate valves.
(6) Pi yub mi pii mi pii, dhugola acel nyo dhugola aryo ku cinge ma oyabe ma epe ku vur mi loko dhugola juyeru.
02. Wedge gate valve
Kare ma tiyo ku wedge gate valve: Ikind kit valve matung tung, gate valve ubedo acel ma jutiyo kudu lee. Pol kare eber kende pi yabo nyo cego, man ecopu ngo ni tiyo kudu pi ketho cik man throttling.
Wedge gate valves pol kare jutiyu kudu ikabedu ma cik moko ope ikum dit pa valve, man kite ma tic kudu utiye matek. Ku lapor, piny ma tiyo ku lyethu ma malo man ma tek mitu piny ma juku pi kare malac, man mange.
Pol kare, lembe mi tic nyo mitu tic maber mi cego, tego ma malo, tego ma malu (tug tung madit pa tego), tego ma nok (tung tung pa tego ma nok), dwand ma nok, cavitation man vaporization, lyethu ma malu, lyethu ma piny (cryogenic), juyero ni jutii ku Wedge gate valve. Calu tic mi kero, yiko petroleum, tic mi petrochemical, tic mi moo i nam, tic mi pii man tic mi yiku pii ma rac i gedo mi adhura, tic mi kemikol man lembe mange ma jutiyo kudu lee.
Cik mi yero:
(1) Piny ma mitere pi kit pa valve fluid. Gate valves juyeru pi tic ma rwom pare nok, kero mi mol matek, rwom maber mi mol, man cik ma tek mi juku.
(2) Liet ma malu man piny ma tek. Calu lyethu ma tek, lyethu ma tek man moo ma tek.
(3) Piny ma lyeth (cryogenic) ma piny. Calu ammonia ma pii, hydrogen ma pii, oxygen ma pii man piny mukende.
(4) Peko ma piny man diameter malac. Calu tic mi pii, tic mi yweyu pii maleng.
(5) Kabedo mi ketho: Ka bor mi ketho utiye nok, yier valve mi wedge ma umu; ka bor pare epe, yer stem wedge gate valve ma nen kamaleng.
(6) Wedge gate valves jucopo tiyo kudu kende kende kani jucopo tiyo kudu kende pi yabo nyo cego, man jucopo tiyo kudu ngo pi loko man throttling.
3. Peko ma rwinyo man gwoko
01. Lembe ma rac man the lembe ma nyayuvalves mi dhugola
I ngeivalve mi dhugolajutiyo kudu, pi adwogi pa lyethu ma rwinyo, tegu, lyethu man ngwec pa piny matung tung, peko ma e piny eni pol kare timere.
(1) Leakage: Tye kit aryo, niwacu leakage ma woko man leakage ma iye. Cwir ma wok woko pa valve julwonge ni external leakage, man external leakage nwangire pol kare i stuffing boxes man flange connections.
The lembe ma nyayu pii ma wok kud i sanduku mi pii: kit nyo ber pa piny ne urombo ngo ku piny ma mitere; piny ma juketho i iye ubedo ka dongo nyo valve stem ubedo ka rwinyo; packing gland utiye gony; ng'om pa valve stem utur.
The lembe ma nyayu pii i flange: Jam tic nyo dit pa gasket urombo ngo ku piny ma mitere; ber pa tic pa flange sealing surface utiye marac; bolts mi mako cing gi juku ngo maber; kit ma pipeline ucungu kudu epe, man pek madwong ulokere i rwom ma malu.
The lembe ma nyayu pii ma wok kud i valve: Cwic ma wok kud i cego pa valve ubedo pii ma wok kud i iye, ma wok kud i turo pa valve nyo lax root pa sealing ring.
(1) Nyoth ubedo nyai pa valve body, bonnet, valve stem, man flange sealing surface. Nyoth utiye pi tic pa piny ma iye, man bende pi wodhu pa ions kud i fillers man gaskets.
(2) Scratches: bedo ma nyai nyo nyai pa piny ma timere ka dhugola ku valve seat giwotho ikumgi gigi i the tego moko.
02. Gwoko pavalve mi dhugola
(1) Yubu pii ma wok woko pa valve
Ka jube diyo piny, gland bolts umaku ubed maber kara gland kud utur man ewek kabedo pi ketho piny. Kinde ma jube diyo packing, valve stem umaku julok kara packing ikum valve stem ubed marom, man juku pressure kud ubed matek akeca, kara kud unyoth rotation pa valve stem, umed wear pa packing, man jwigo kwo pa valve. Wi valve stem utiye ma nyai, ma weko medium doko yot ni wok woko. Umitu jutim kudu pi jwigo ret ma nwang iwi valve stem mapodi jutiyo kudu ngo.
Pi pii ma mol i flange, ka gasket unyothere, umitu julok; ka piny ma jutiyo kudu pi gasket juyeru marac, piny ma copo rombu ku yeny mi tic umaku juyer; Ka tic pa flange sealing surface utiye marac, umitu juwodhe man juyike. Kabedo ma juketho iye flange judwoko wange nitundu edaru.
Mi medo, diyo maber pa flange bolts, yubu pa pipelines maber, man jwigo pek madwong ikum flange connections zo gikonyo pi juku leakage i flange connections.
(2) Yubu pii ma wok kud i valve
Yubu pa pii ma wok kud i iye utiye mi daru peko pa piny ma juketho i iye man theng cing ma ucungo (ka ring ma juketho i iye ucungo iwi valve plate nyoke kom ku diyo nyo threading). Ka kabedo ma juketho iye cing juyike iwi valve man iwi valve plate, epe ku peko mi rwinyo man pii ma wok.
Ka kabedo ma juketho i iye unyothiri marac man kabedo ma juketho i iye ubedo ku ring ma juketho i iye, ring macon ucikere ni kwanyu man jubiketho ring ma nyen ma juketho i iye; ka kabedo ma juketho i iye jutiyo kudu iwi valve body, kabedo ma juketho i iye ma unyothere umaku juwodhe woko. Woth, man igud ring manyen mi juku piny nyoke piny ma jutiyo kudu pi juku piny manyen. Ka ret, ret, ret, ret man peko mange ikum piny ma juketho i iye utiye piny pa 0.05mm, jucopo jwigo gi ku tiyo ku cing.
Leakage timere i thenge mi ring ma juketho. Ka dul ma juku kudu ucungu maber, keth tetrafluoroethylene tape nyo rangi ma tar ma gwai iwivalvekom nyo piny pa ring groove pa sealing ring, man i dii sealing ring ni pongu theng sealing ring; Ka ring mi umu ubedo thread, PTFE tape nyo rangi ma tar ma gwai umaku juket ikind thread ni gwoko pii kud ucwir ikind thread.
(3) Yubu pa valve ma nyai
I lembe ma rwinyo, kum valve man bonnet gibedo ku lyethu marom, man valve stem pol kare gibedo ku vur. Ka juyubu, piny ma nyai ucikere juwodh woko. Pi valve stem ku pitting pits, umitu jutim kudu iwi lathe mi kwanyu depression, man tiyu ku filler ma tye ku slow-release agent, nyo ywey filler ku pii ma juyiko pi kwanyu filler ma rac ni valve stem. ions ma nyai.
(4) Yubu ret ikum piny ma juketho i iye
I kare ma itiyo ku valve, tem ni juku kabedo ma juketho iye cinge kud utur, man torque ucikere ngo ni bedu malac kani ibe cego valve. Ka kabedo ma juketho i iye utur, jucopo wothe ku cinge.
4. Nwangu pavalve mi dhugola
I lembe mi soko ma kawoni man yeny pa jutic, cumavalves mi dhugolaakaunti pi dul madit. Calu janen wi ber pa piny, ikum bedo ku ngec ikum pimo ber pa piny, umitu ibed ku ngec maber ikum piny ne gire.
01. Thelembe mi nwangu pa cumavalve mi dhugola
Cumavalves mi dhugolaju temo malube ku cik mi ngom GB/T12232-2005 “Flanged ironvalves mi dhugolapi valve madongo.
02. Piny ma jutiyo kudu pi neno ironvalve mi dhugola
Ikindgi uketho i iye: lanyuth, pek pa ot ma nok, pimo kero, pima pa cing, man mange. Ikindgi, pek pa cel, kero, man pima pa cing gi ubedo piny ma pire tek mi ngiyo man piny ma pire tek. Ka piny moko utiye ma ber ongo, jucopo ngolo lembe iwi gi ni piny ma ber ongo.
I lembe ma nok, ngiyo ber pa piny ubedo piny ma pire tek uloyu i ngiyo piny, man beru pare nenre gire. Calu jurutic mi ngiyo piny, umitu wabed ku kero mi medo kero mwa, ungo kende ni timo tic maber i ngiyo piny, ento de ni Ka nwango ngeyo piny ma ju ngiyo kende re ma wacopo timo tic maber mi ngiyo piny.
Saa mi cwalo: Mar-31-2023
