A npauj npaim valveyog ib hom valve uas tuaj yeem qhib lossis kaw los ntawm kev tig rov qab thiab tawm mus li 90 degrees. Lubnpauj npaim valveua tau zoo hauv kev tswj cov dej ntws ntxiv rau qhov muaj peev xwm kaw thiab kaw zoo, tsim qauv yooj yim, me me, hnyav sib, siv khoom tsawg, yooj yim teeb tsa, tsav tsheb tsawg, thiab ua haujlwm sai. yog ib hom valve ceev tshaj plaws.Cov npauj npaim valve feem ntau sivQhov ntau yam thiab qhov dav ntawm lawv cov kev siv tau nthuav dav, thiab lawv tau siv ntau dua rau qhov kub thiab txias, siab siab, txoj kab uas hla loj, kev sib khi zoo, lub neej ntev, cov yam ntxwv hloov kho zoo heev, thiab ntau lub valve ua haujlwm. Tam sim no nws muaj qib siab ntawm kev ntseeg siab thiab lwm yam kev ua tau zoo.

Cov kev ua haujlwm ntawm cov npauj npaim valve tau zoo dua vim yog siv cov roj hmab hluavtaws uas tiv taus tshuaj lom neeg. Vim tias cov roj hmab hluavtaws muaj cov yam ntxwv ntawm kev tiv taus corrosion, tiv taus kev yaig, qhov loj me ruaj khov, kev ywj pheej zoo, yooj yim tsim, thiab tus nqi qis, cov roj hmab hluavtaws nrog ntau yam khoom tuaj yeem xaiv raws li ntau yam kev thov kom ua tau raws li cov xwm txheej ua haujlwm ntawm cov npauj npaim valve.

Vim tias polytetrafluoroethylene (PTFE) muaj zog tiv taus corrosion, ruaj khov, tiv taus kev laus, coefficient qis ntawm kev sib txhuam, yooj yim ntawm kev ua duab, thiab ruaj khov ntawm qhov loj me, nws qhov kev ua tau zoo tag nrho tuaj yeem txhim kho los ntawm kev sau thiab ntxiv cov ntaub ntawv tsim nyog kom ua tiav lub zog zoo dua thiab kev sib txhuam. Cov roj hmab hluavtaws muaj qee qhov tsis zoo, tab sis cov ntaub ntawv rau kev sib khi lub qhov rooj npauj npaim uas muaj coefficient qis dua tau nyob ib puag ncig lawv. Txhawm rau txhim kho kev ua tau zoo ntawm lub qhov rooj npauj npaim, cov ntaub ntawv polymer molecular siab, xws li polytetrafluoroethylene, thiab lawv cov ntaub ntawv hloov kho tau siv dav. Tam sim no nws tau hloov kho dua tshiab, thiab lub qhov rooj npauj npaim tau tsim nrog qhov kub thiab siab loj dua, kev ua haujlwm sealing txhim khu kev qha, thiab lub neej siv tau ntev dua.

Cov li qub npauj npaim uas muaj hlau kaw tau nce qib ntau heev kom ua tau raws li qhov xav tau ntawm kev siv hauv kev lag luam xws li kub siab thiab qis, kev yaig muaj zog, thiab lub neej ntev. Cov li qub npauj npaim uas muaj hlau kaw tau siv dav hauv kev lag luam xws li kub siab thiab qis, kev yaig muaj zog, thiab lub neej ntev ua tsaug rau kev siv cov khoom siv tiv taus kub siab, tiv taus kub qis, tiv taus corrosion muaj zog, tiv taus kev yaig muaj zog, thiab cov khoom siv alloy muaj zog. Txhawm rau txhim kho cov thev naus laus zis ntawm lub li qub npauj npaim, cov li qub loj (9–750mm), siab siab (42.0MPa), thiab qhov kub dav (-196–606 ° C) tau tshwm sim thawj zaug.

Lub qhov dej npauj npaim muaj qhov tsis kam me ntsis thaum nws qhib tag. Cov qhov dej npauj npaim feem ntau siv rau hauv kev tswj hwm qhov loj vim tias lawv muaj peev xwm tswj tau qhov ntws zoo ntawm qhov qhib ntawm 15 ° thiab 70 °.

Feem ntau ntawm cov npauj npaim valves siv tau nrog cov khoom uas muaj cov khoom khov kho vim tias lub phaj npauj npaim txav mus los hauv kev txav mus los. Nws kuj tseem siv tau rau cov khoom me me thiab cov hmoov, nyob ntawm seb lub foob muaj zog npaum li cas.

Cov qhov dej npauj npaim muaj txiaj ntsig zoo rau kev tswj cov dej ntws. Thaum xaiv lub qhov dej npauj npaim, nws yog ib qho tseem ceeb uas yuav tsum xav txog qhov cuam tshuam ntawm qhov poob siab rau lub kaw lus kav dej nrog rau lub zog ntawm lub phaj npauj npaim kom tiv taus qhov siab ntawm cov kav dej thaum nws kaw vim tias qhov poob siab ntawm lub qhov dej npauj npaim hauv cov kav dej loj heev, kwv yees li peb npaug ntawm lub qhov rooj vag. Qhov kub ua haujlwm ntawm cov khoom siv rooj zaum elastic ntawm qhov kub siab kuj tseem yuav tsum tau coj mus rau hauv tus account.

Lub valve npauj npaim muaj cov qauv luv luv thiab qhov siab qis. Nws qhib thiab kaw sai sai thiab muaj cov yam ntxwv tswj cov kua dej zoo. Kev ua cov valve loj yog qhov zoo tshaj plaws rau kev tsim qauv ntawm lub valve npauj npaim. Kauj ruam tseem ceeb tshaj plaws hauv kev xaiv lub valve npauj npaim uas yuav ua haujlwm tau zoo thiab zoo thaum siv los tswj cov dej ntws yog xaiv hom thiab qhov tshwj xeeb.

Cov npauj npaim li qub feem ntau yog qhia kom siv rau hauv kev tswj hwm, kev tswj hwm, thiab cov av nkos uas xav tau qhov ntev ntawm cov qauv luv luv, qhov qhib thiab kaw sai, thiab qhov txiav siab tsawg (qhov sib txawv me me ntawm lub siab). Cov npauj npaim li qub tuaj yeem siv nrog cov khoom siv abrasive, cov channel txo qis, suab nrov qis, cavitation thiab vaporization, me ntsis ntawm huab cua xau, thiab kev hloov kho ob chav. Kev hloov kho lub throttle thaum ua haujlwm nyob rau hauv cov xwm txheej tsis tshua muaj, xws li thaum kaw nruj, hnav hnyav heev, kub qis heev, thiab lwm yam.