A npauj npaim valveyog ib qho khoom siv tswj dej. Nws siv 1/4 tig tig los tswj cov dej ntws tawm hauv ntau yam txheej txheem. Paub txog cov ntaub ntawv thiab kev ua haujlwm ntawm cov khoom yog qhov tseem ceeb. Nws pab xaiv txoj cai valve rau kev siv tshwj xeeb. Txhua yam khoom, los ntawm lub cev lub cev mus rau lub valve qia, muaj cov haujlwm tshwj xeeb. Lawv yog ua los ntawm cov ntaub ntawv tsim nyog rau daim ntawv thov. Lawv txhua tus ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev ua haujlwm zoo thiab kev saib xyuas. Kev nkag siab zoo ntawm cov khoom no tuaj yeem txhim kho kev ua haujlwm thiab kev pabcuam lub neej. Npauj npaim li qub yog siv nyob rau hauv ntau lub teb vim lawv versatility. Kev lag luam xws li kev kho dej, kev ua tshuaj, thiab zaub mov thiab dej haus siv cov li qub no. Npauj Npaim li qub tuaj yeem tswj tau qhov sib txawv thiab qhov kub thiab txias. Yog li, lawv haum rau ob qho tib si siab thiab qis qhov xav tau ib puag ncig. Tsis tas li ntawd, tus nqi qis thiab kev yooj yim ntawm kev teeb tsa ua rau nws sawv ntawm ntau lub li qub.
1. Npauj Npaim Valve Lub Npe: Lub cev valve
Npauj npaim valve lub cev yog lub plhaub. Nws txhawb nqa lub valve disc, lub rooj zaum, qia, thiab actuator. Covnpauj npaim valve lub cevyog siv los txuas rau lub raj xa dej kom lub valve nyob hauv nws qhov chaw. Tsis tas li ntawd, lub valve lub cev yuav tsum tiv taus ntau yam kev ntxhov siab thiab tej yam kev mob. Yog li, nws cov qauv tsim yog qhov tseem ceeb rau kev ua haujlwm.
Valve lub cev khoom
Lub valve lub cev cov khoom nyob ntawm cov kav dej thiab cov xov xwm. Nws kuj nyob ntawm ib puag ncig.
Cov hauv qab no yog cov khoom siv uas nquag siv.
- Cam khwb cia hlau, qhov pheej yig tshaj hom hlau npauj npaim valve. Nws muaj zoo hnav tsis kam.
- Cov hlau nplaum, piv nrog cam khwb cia hlau, muaj zog zoo dua, hnav tsis kam thiab zoo dua ductility. Yog li nws tsim nyog rau kev siv dav dav.
-Stainless hlau, muaj zoo stability thiab corrosion kuj. Nws yog qhov zoo dua rau cov kua dej corrosive thiab kev siv huv huv.
- WCB,nrog nws cov hardness siab thiab lub zog, yog haum rau high-pressure, high-temperature daim ntaub ntawv. Thiab nws yog weldable.
2. Npauj Npaim Valve Lub Npe: Valve disc
Covnpauj npaim valve discyog nyob rau hauv nruab nrab ntawm lub valve lub cev thiab rotates qhib los yog kaw lub npauj npaim valve. Cov khoom yog nyob rau hauv kev sib cuag nrog cov kua. Yog li, nws yuav tsum tau xaiv raws li qhov nruab nrab cov khoom. Cov ntaub ntawv muaj xws li sphere nickel plating, nylon, roj hmab, stainless hlau, thiab txhuas bronze. Qhov tsim nyias ntawm lub valve disc tuaj yeem txo qis kev ua haujlwm, yog li txuag lub zog thiab txhim kho kev ua haujlwm ntawm npauj npaim valve.
valve disc hom.
Valve disc hom: Muaj ntau ntau hom valve discs rau kev siv sib txawv.
- Concentric valve discyog ua raws li qhov nruab nrab ntawm lub cev valve. Nws yog qhov yooj yim thiab raug nqi.
- Ob chav eccentric valve discmuaj ib tug roj hmab strip embedded rau ntawm ntug ntawm lub valve phaj. Nws tuaj yeem txhim kho kev ua haujlwm sealing.
Triple eccentric discyog hlau. Nws seals zoo dua thiab hnav tsawg dua, yog li nws yog qhov zoo rau qhov chaw muaj kev kub ntxhov.
3. Npauj Npaim Valve Lub Npe Lub Npe: Stem
Lub qia txuas lub disc box actuator. Nws xa cov kev sib hloov thiab lub zog uas xav tau los qhib lossis kaw lub npauj npaim valve. Cov khoom no plays lub luag haujlwm tseem ceeb hauv kev ua haujlwm ntawm tus npauj npaim valve. Lub qia yuav tsum tiv taus ntau lub zog thiab kev ntxhov siab thaum ua haujlwm. Yog li, cov khoom siv yuav tsum tau muaj siab.
Cov khoom siv ntawm lub valve
Lub qia feem ntau yog ua los ntawm cov ntaub ntawv muaj zog, zoo li stainless hlau thiab txhuas bronze.
-Stainless hlaumuaj zog thiab tiv taus corrosion.
-Aluminium bronzeresists nws zoo heev. Lawv ua kom ntseeg tau ntev.
- Lwm yam khoom sivtej zaum yuav muaj xws li carbon steel los yog alloys. Lawv raug xaiv rau kev ua haujlwm tshwj xeeb.
4. Npauj Npaim Valve Lub Npe: Lub Rooj
Lub rooj zaum hauv npauj npaim valve tsim ib lub foob ntawm lub disc thiab lub valve lub cev. Thaum lub valve kaw, lub disc nyem lub rooj zaum. Qhov no tiv thaiv kev xau thiab ua kom lub kav dej tsis zoo.
Covnpauj npaim valve roojyuav tsum tiv taus ntau yam kev kub ntxhov thiab kub. Kev xaiv ntawm cov khoom siv zaum yog nyob ntawm daim ntawv thov tshwj xeeb. Roj hmab, silicone, Teflon thiab lwm yam elastomers yog kev xaiv.
Valve rooj hom
Muaj ntau hom rooj zaum kom tau raws li ntau yam kev siv. Feem ntau hom yog:
-Soft valve rooj zaum: Ua los ntawm roj hmab los yog Teflon, lawv hloov tau thiab ua haujlwm zoo. Cov rooj zaum no zoo tagnrho rau kev siv qis qis, qhov kub thiab txias uas yuav tsum tau kaw nruj nreem.
-Txhua lub rooj zaum hlau: yog ua los ntawm cov hlau, zoo li stainless hlau. Lawv tuaj yeem tiv taus qhov kub thiab txias. Cov rooj zaum valve no haum rau qhov xav tau ib puag ncig uas yuav tsum tau ua kom ntev.
-Multi-layer valve rooj zaum: Ua los ntawm graphite thiab hlau stacked ib zaug. Lawv muab cov yam ntxwv ntawm cov rooj zaum muag muag thiab cov rooj zaum hlau valve. Yog li, Lub rooj zaum ntau txheej no ua tiav qhov sib npaug ntawm qhov yooj thiab lub zog. Cov rooj zaum valve no yog rau kev ua haujlwm siab sealing daim ntaub ntawv. Lawv tuaj yeem kaw txawm tias hnav.
5. Actuator
Lub actuator yog lub tshuab ua haujlwm ntawm npauj npaim valve. Nws hloov lub phaj valve kom qhib lossis kaw qhov ntws. Lub actuator tuaj yeem yog phau ntawv (kuav lossis cab iav) lossis tsis siv neeg (pneumatic, hluav taws xob, lossis hydraulic).
Hom thiab cov khoom siv
-Khoom:Ua los ntawm cov hlau los yog cam khwb cia hlau, haum rau npauj npaim li qub ntawm DN≤250.
- Kab mob:Haum rau npauj npaim li qub ntawm txhua qhov caliber, txuag zog thiab tus nqi qis. Gearboxes tuaj yeem muab cov khoom siv zoo. Lawv ua kom yooj yim rau kev khiav lag luam loj lossis siab siab li qub.
- Pneumatic actuators:siv compressed cua los ua haujlwm li qub. Lawv feem ntau yog ua los ntawm txhuas lossis hlau.
- Hluav taws xob actuators:siv lub tshuab hluav taws xob thiab tau nruab rau hauv vaj tse ua los ntawm cov ntaub ntawv xws li aluminium lossis stainless hlau. Muaj ntau hom thiab ntse. Waterproof thiab tawg-pov thawj lub taub hau hluav taws xob kuj tuaj yeem xaiv rau qhov chaw tshwj xeeb.
Hydraulic actuators:siv cov roj hydraulic los ua haujlwm npauj npaim li qub. Lawv cov khoom yog ua los ntawm cov hlau los yog lwm yam khoom muaj zog. Nws tau muab faib ua ib leeg ua yeeb yam thiab ob leeg ua yeeb yam pneumatic hau.
6. Bushings
Bushings txhawb nqa thiab txo kev sib txhuam ntawm cov khoom txav, zoo li lub pob valve thiab lub cev. Lawv ua kom cov haujlwm du.
Khoom siv
PTFE (Teflon):tsis tshua muaj kev sib txhuam thiab cov tshuaj tiv thaiv zoo.
- Bronze:siab zog thiab zoo hnav tsis kam.
7. Gaskets thiab O-rings
Gaskets thiab O-rings yog cov khoom sib khi. Lawv tiv thaiv kev sib kis ntawm cov khoom siv valve thiab nruab nrab ntawm cov li qub thiab cov kav dej.
Khoom siv
- EPDM:feem ntau yog siv rau hauv dej thiab chav dej.
- NBR:haum rau kev siv roj thiab roj.
- PTFE:Cov tshuaj tiv thaiv siab, siv rau hauv kev siv tshuaj lom neeg nruj heev.
- Viton:Paub txog nws tsis kam mus rau qhov kub thiab txias thiab tshuaj lom neeg.
8. Bolts
Bolts tuav cov npauj npaim valve qhov chaw ua ke. Lawv xyuas kom meej tias lub valve muaj zog thiab xau-pov thawj.
Khoom siv
- Stainless hlau:Nyiam rau nws corrosion kuj thiab lub zog.
- Cov pa roj carbon steel:Siv nyob rau hauv tsawg corrosive ib puag ncig.
9. Pins
Cov pins txuas lub disc mus rau qia, tso cai rau kev sib hloov ua kom zoo.
Khoom siv
- Stainless hlau:Corrosion kuj thiab siab zog.
- Bronze:Hnav tsis kam thiab zoo machinability.
10. Rib
Cov tav muab kev txhawb nqa ntxiv rau lub disc. Lawv tuaj yeem tiv thaiv deformation nyob rau hauv siab.
Khoom siv
- Hlau:Siab zog thiab nruj.
- Aluminium:Haum rau kev siv lub teeb yuag.
11. Cov ntaub thiab cov txheej txheem
Liners thiab coatings tiv thaiv lub valve lub cev thiab qhov chaw ntawm corrosion, yaig, thiab hnav.
- Roj hmab hauv ob sab phlu:Xws li EPDM, NBR, los yog neoprene, siv nyob rau hauv corrosive los yog abrasive daim ntaub ntawv.
- PTFE txheej:tshuaj tsis haum thiab tsis muaj kev sib txhuam.
12. Qhov taw qhia txoj haujlwm
Qhov taw qhia txoj haujlwm qhia qhov qhib lossis kaw lub xeev ntawm lub valve. Qhov no pab cov chaw taws teeb lossis cov tshuab ua haujlwm tsis siv neeg saib xyuas lub valve txoj haujlwm.
Hom
- Mechanical:ib qho yooj yim mechanical taw qhia txuas rau lub valve qia lossis actuator.
- Hluav taws xob:ib sensor