Gate valveet sakey a kaslakan ya balbula ya uusaren ed amin ya nanduruman usar. Saya so manunan uusaren ed panagpreserba na danum, metalurhiya tan arum niran industriya. Say malaknab ya performance to et binidbir na merkado. Nilikud ed impanaral ed gate valve, nanggawa met na mas seryoso tan maalwar ya impanaral ed pangusar tan panresolbe nabalbula na gate.
Say onggendan et sakey a inkalapagan a diskusyon nipaakar ed istruktura, pangusar, panagresolbe na problema, panagsukimat ed kalidad tan arum niran aspekto nasaray balbula na gate.
1. Istruktura
Say istruktura nagate valve: saygate valveet sakey a balbula ya manguusar na gate plate tan valve seat pian nakontrol so panlukas tan pansara.Gate valvemanunan tugyopen na valve body, valve seat, gate plate, valve stem, bonnet, stuffing box, packing gland, stem nut, handwheel tan arum nira. Depende ed panguman na posisyon na gate tan say yurongan na balbula, nayarin umanen so kabaleg na kanal tan nayarin putoten so kanal. Pian nagawaan sogate valveisara ya malet, say pankakasakey na gate plate tan say yurongan na balbula et aka-giling.
Unong ed nanduruman kurti nasaray balbula na gate, saray gate valve et nayarin naapag ed wedge type tan parallel type.
Say puerta na wedgegate valveet singa wedge, tan say sealing surface et manporma na oblique angle ed sentro na linya na channel, tan say wedge ed baetan na gate tan say valve seat et uusaren pian naabot so sealing (pansara). Say wedge plate et nayarin saksakey a karnero odino duaran karnero.
Saray sealing surfaces na parallel gate valve et parallel ed balang sakey tan perpendicular ed sentro na linya na channel, tan walay duaran klase: walay expansion mechanism tan anggapoy expansion mechanism. Walay doblin kalakian a karnero ya walay mekanismo na panagkalat. No onleksab iray karnero, saray wedge na duaran manparaan a karnero so mangibuyak ed duaran karnero ed yurongan na balbula sumpad akakiling a tapew pian nasebel so dalan na agos. No ontagey tan onlukas iray kalakian a karnero, saray wedge tan saray gate et mansian, say gate plate et ontagey ed sakey a kaatagey, tan say wedge et suportaan na boss ed gate plate. Say doblin gate ya anggapoy mekanismo na panagpalaknab, no say gate et onloob ed yurongan na balbula diad duaran manparaan a tapew na yurongan, say presyon na pluido so nausar pian i-press so gate ed laman na balbula diad outlet side na balbula pian naseal so pluido.
Unong ed galaw na valve stem no lukasan tan isara so gate, say gate valve et naapag ed duaran klase: rising stem gate valve tan concealed stem gate valve. Say valve stem tan say gate plate na rising stem gate valve et ontatagey tan onleleksab ed parehon oras no lukasan o isara itan; no nalukasan o nasara so akaamot ya stem gate valve, say valve stem et onliber labat, tan ag nanengneng so itatagey na valve stem, tan say valve plate et ontagey o onleksab. Say bentaha na rising stem gate valve et say lukas ya katagey na channel et nayarin husgaan base ed itatagey na valve stem, balet say okupadon katagey et nayarin napatikeyan. No akaarap ed handwheel o handle, ibalikas so handwheel o handle ya paarap ed relo pian nasara so balbula.
2. Saray okasyon tan prinsipyo na panagpili na saray balbula na gate
01. Patatdanggate valve
Saray pankanawnawan pangiyaplika na slab gate valve:
(1) Parad saray tubo na langis tan natural gas, say flat gate valve ya walay diversion holes et mainomay met ya linisan so tubo.
(2) Saray tubo tan kagawaan ed panagsimpenan na pinon larak.
(3) Pansamantala ed saray kagawaan ed pantalan parad langis tan natural gas.
(4) Saray tubo ya walay akabitin ya partikulo na media.
(5) Tubo na gas ed syudad.
(6) Waterworks.
Say prinsipyo na panagpili na slabgate valve:
(1) Parad saray tubo na langis tan natural gas, mangusar na sakey odino duaran slabsaray balbula na gate. No nakaukolan ya linisan so tubo, mangusar na saksakey a gate ya walay diversion hole open stem flat gate valve.
(2) Parad tubo na transportasyon tan kagawaan ed panagsimpenan na pinon larak, say flat gate valve ya walay single ram odino double ram ya anggapoy diversion holes so pinili.
(3) Parad saray instalasyon na pantalan na panag-ala na langis tan natural gas, say pilien et single gate odino double gate slab gate valves ya walay akaamot ya rod floating seats tan diversion holes.
(4) Parad saray tubo ya walay akabitin ya particle media, saray slab gate valve ya singa kutsilyo so napili.
(5) Parad saray urban gas transmission pipelines, mangusar na single gate odino double gate soft-sealed rising rod flat gate valves.
(6) Parad saray proyekto na danum ed gripo, saray single gate odino double gate gate valves ya walay lukas iran baras ya anggapoy diversion holes so napili.
02. Wedge gate valve
Saray nausar ya okasyon na wedge gate valve: Diad nanduruman klase na balbula, say gate valve so sankalaknaban ya uusaren. Kaslakan et matukoy labat itan parad sigpot a panlukas odino sigpot a pansara, tan ag nayarin usaren parad regulasyon tan panag-throttle.
Saray wedge gate valve et kaslakan ya uusaren ed saray pasen ya anggapoy istrikton kakaukolanen ed paway na sukat na balbula, tan say kondisyon na panag-operate et medyo mairap. Singa bilang, say pantratrabahoan ya atagey so temperatura tan atagey a presyon et mankaukolan na saray mansara a parte pian naseguro so andukey a panag-seal, tan arum nira.
Diad inkalapagan, saray kondisyon na serbisyo odino mankaukolan na napanmatalkan a panag-seal, atagey a presyon, atagey a presyon a cut-off (baleg a pandumaan na presyon), abeban presyon a cut-off (melag a pandumaan na presyon), abeban ungol, cavitation tan vaporization, atagey a temperatura a medium, abeban temperatura (cryogenic), nirekomenda so pangusar na Wedge gate valve. Singa say industriya na kuryente, panagtunaw na petrolyo, industriya na petrochemical, offshore oil, water supply engineering tan sewage treatment engineering ed urban construction, chemical industry tan arum niran lawak so malaknab ya uusaren.
Prinsipyo na panagpili:
(1) Saray kakaukolanen parad saray katangian na pluido na balbula. Saray gate valve et pinili parad saray kondisyon na pantratrabaho ya melag so resistensya na agos, mabiskeg ya kapasidad na agos, maong ya katangian na agos, tan malet iran kakaukolanen ed panagselyo.
(2) Atagey a temperatura tan atagey a presyon na medium. Singa say atagey a presyon na singaw, atagey a petang tan atagey a presyon na larak.
(3) Abeban temperatura (cryogenic) ya medium. Singa say liquid ammonia, liquid hydrogen, liquid oxygen tan arum niran media.
(4) Abeban presyon tan baleg so diametro. Singa saray kimey ed danum, kimey ed panaglinis na dutak.
(5) Pasen ya pangipuesto: No limitado so katagey na pangipuesto, pilien so akaamot a stem wedge gate valve; no ag-akasebel so katagey, pilien so balbula na gate wedge na stem wedge ya akalukas.
(6) Saray wedge gate valve et nayarin usaren labat no nayarin usaren labat iratan parad sigpot a panlukas odino sigpot a pansara, tan ag nayarin usaren parad panag-adjust tan panag-throttle.
3. Kaslakan iran depekto tan panmintina
01. Saray kaslakan a lingo tan sengegan nasaray balbula na gate
Kayari nagate valveno nausar, lapud epekto na medium temperatura, pressure, corrosion tan relatibon galaw na nanduruman parte na kontak, mabetbet ya nagagawa iray onggendan a problema.
(1) Leakage: Walay duaran klase, salanti, external leakage tan internal leakage. Say itatagey na balbula ed paway na balbula et tatawagen ya external leakage, tan say external leakage et kaslakan ya nanengneng ed saray stuffing box tan flange connections.
Saray rason ed inka-leak na kahon na palaman: say klase o kalidad na palaman et ag makaabot ed saray kakaukolanen; say palaman et ontatakken la odino say sanga na balbula et nauupot la; say packing gland et malukak; say tapew na balbula et walay gasgas to.
Saray rason no akin ya onlelereg so koneksyon na flange: Say materyal o kabaleg na gasket et ag makaabot ed saray kakaukolanen; say kalidad na panagproseso na flange sealing surface et makapuy; saray bolt na koneksion et ag-akapeket a maong; say pipeline configuration et aliwan makatunongan, tan alablabas so kaaruman ya karga ya nagawa ed koneksyon.
Saray rason ed internal leakage na balbula: Say leakage ya sengegan na ag-inkasara na balbula et internal leakage, ya sengegan na inkaderal na sealing surface na balbula odino say lax root na sealing ring.
(1) Say corrosion et mabetbet ya corrosion na laman na balbula, bonnet, valve stem, tan flange sealing surface. Say corrosion et manunan lapud kiwas na medium, ontan met ed itatagey na saray ion manlapud saray filler tan gasket.
(2) Gasgas: lokal ya inkagagasgas odino inka-peeling na tapew ya nagagawa no say gate tan say yurongan na balbula et onkikiwas ya relatibo ed balang sakey diad silong na sakey a pressure na pidedeneng.
02. Panmintina edgate valve
(1) Panangapiger ed paway na balbula
No i-compress so packing, nepeg ya balanse iray gland bolts pian ag-onkiling so gland tan walay gap parad compaction. Legan ya i-compress so packing, say valve stem et nepeg ya i-rotate pian magmaliw ya parepareho so packing ed kaliberliber na valve stem, tan ag-onkupas so pressure, pian ag naapektoan so rotation na valve stem, ondarakel so wear na packing, tan napalemew so service life to. Say tapew na valve stem et walay gasgas to, kanian mainomay ya ompaway so medium. Nepeg ya iproseso pian naekal iray gasgas ed tapew na valve stem antis ya usaren.
Parad leakage ed koneksyon na flange, no aderal so gasket, nepeg ya salatan; no say materyal na gasket et aliwan duga so pinili, nepeg ya pilien so materyal ya makasumpal ed saray kakaukolanen ed pangusar; no makapuy so kalidad na panagproseso na flange sealing surface, kaukolan ya ekalen tan apigeren. Say flange sealing surface et iproseso lamet anggad magmaliw ya kualipikado.
Niarum ni, say suston pangipit ed saray flange bolts, suston pangiparaan na saray tubo, tan say pangipaliis ed alablabas ya karga ed saray koneksyon na flange et makatulong pian ag-onleak iray koneksion na flange.
(2) Panangapiger ed loob na balbula
Say pangapiger ed internal leakage et pian naekal so aderal ed tapew na sealing tan say malukak a lamot na sealing ring (no say sealing ring et akapeket ed valve plate odino yurongan diad panamegley na panag-press o panag-thread). No say tapew na sealing et direktan iproseso ed laman na balbula tan say plato na balbula, anggapoy problema ed malukak a lamot tan itatagey.
No say sealing surface et aderal a maong tan say sealing surface et naporma na sealing ring, nepeg ya ekalen so daan ya singsing tan mangiter na balon sealing ring; no say sealing surface et direktan naproseso ed laman na balbula, say aderal ya sealing surface et nepeg ya ekalen nin unona. Ekalen, insan gilingen so balon sealing ring odino say naproseso lan tapew pian magmaliw ya balon sealing surface. No saray gasgas, bukol, dutak, ulpo tan arum niran depekto ed tapew na sealing et kulang ed 0.05mm, nayarin naekal iratan diad panamegley na panaggiling.
Say leakage et nagagawa ed lamot na sealing ring. No say sealing ring et naayos la panamegley na panag-press, mangiyan na tetrafluoroethylene tape odino amputin makapal a pintura edbalbulayurongan odino say leksab na ring groove na sealing ring, insan i-press so sealing ring pian panoen so lamot na sealing ring; No say sealing ring et walay sinulid to, nepeg ya iyan so PTFE tape odino amputin makapal a pinta ed baetan na saray sinulid pian ag-onlelereg so pluido ed baetan na saray sinulid.
(3) Panangapiger ed inkabulok na balbula
Diad normal iran sirkumstansya, say laman na balbula tan bonnet et pareparehon nabubulok, bangta say sanga na balbula et mabetbet ya nabubulok. No mangaapiger, nepeg ya ekalen nin unona iray produkto na panag-apag. Parad valve stem ya walay pitting pits to, nepeg ya iproseso ed lathe pian naekal so depression, tan mangusar na filler ya walay slow-release agent to, odino linisan so filler na distilled water pian naekal so filler ya makaderal ed valve stem. makaderal iran ion.
(4) Panangapiger ed saray gasgas ed tapew na seal
Legan ya uusaren so balbula, salien ya ag-onkasil so tapew na sealing, tan say torque et nepeg ya aliwan baleg no isara so balbula. No walay gasgas ed tapew na seal, nayarin ekalen itan panamegley na panaggiling.
4. Pakaamta edgate valve
Diad kaplesan ya kaliberliber na tindaan tan pankaukolan na manguusar, say bakalsaray balbula na gatemanlalapud baleg a kabiangan. Bilang sakey ya inspektor na kalidad na produkto, nilikud ed pakaamta ed panag-inspeksion na kalidad na produkto, nepeg met ya walaan ka na maong a pakatalos ed mismon produkto.
01. Say basiyan na pakadetektaan na bakalgate valve
Balatyangsaray balbula na gateet nasubok base ed estandarte na bansa ya GB/T12232-2005 ya “Flanged ironsaray balbula na gateparad saray inkalapagan a balbula”.
02. Saray inspeksyon ed bakalgate valve
Kaiba ed saya so: karatula, sankaabebaan ya kapal na padir, pressure test, shell test, tan arum nira. Kabiangan ed saratan, say kapal na padir, pressure, tan shell test et saray nakaukolan ya inspeksion tan manunan bengatla. No wala ray ag kualipikadon bengatla, nayarin direktan husgaan iratan ya ag kualipikadon produkto.
Diad antikey, say panagsukimat ed kalidad na produkto so sankaimportantian a kabiangan na interon panagsukimat ed produkto, tan say kaimportantian to et mapatnag. Bilang sakey a front-line inspection staff, nepeg tayon lanang ya pabiskegen so kalidad tayo, aliwan pian nagawaan tayoy maong ya trabaho ed panag-inspeksion na produkto, noagta pian nagawaan tayo met so mas maabig ya trabaho na panag-inspeksion diad panamegley na pakatalos tayo ed saray inspeksion ya produkto.
Oras na pangi-post: Mar-31-2023
