Cov pob valvethiabnpauj npaim li qub yog ob pawg tseem ceeb ntawm cov li qub thiab siv dav. Lub pob valve yuav tsum tau kaw nruj heev ntawm qhov kub thiab txias siab thiab siab tsis kam. Cov li qub npauj npaim feem ntau yog siv rau cov xwm txheej ua haujlwm nrog qhov siab qis thiab qhov yuav tsum tau kaw qis.

 

Kuj tseem muaj ntau qhov kev faib tawm ntawm lub pob valve thiab lub pob npauj npaim valve. Lub pob valve tuaj yeem muab faib ua: lub pob valve hlau kaw ruaj khov, lub pob valve mos kaw, lub pob valve ntab, lub pob valve ruaj khov, lub pob valve eccentric semi-ball, lub pob valve V-puab tswj, thiab lwm yam.

 

Lub valve npauj npaim tau muab faib ua: peb lub valve npauj npaim eccentric, ob lub valve npauj npaim eccentric, lub valve npauj npaim centerline, lub valve npauj npaim sealing nyuaj, thiab lub valve npauj npaim sealing mos.

 

Cov pob valve thiab cov npauj npaim valve yog cov valve uas siv ntau. Qee zaum, ob qho tib si siv tau rau kev siv dav dav, thiab qee zaum ua haujlwm, tsuas yog ib qho ntawm lawv siv tau. Cov yam ntxwv ntawm ob hom valve no. Peb luv luv tshuaj xyuas:

Lub pob valve: lub valve qaib tau hloov zuj zus, qhov qhib thiab kaw yog lub pob kheej kheej, cov yam ntxwv yog:

1. Qhov kev tiv thaiv kev ncig yog me me. Thaum qhib tag nrho, tsis muaj qhov twg thaiv qhov ntws ntawm qhov nruab nrab hauv cov channel;

2. Nws tuaj yeem kaw tag nrho hauv qab qhov siab dua thiab kub dua;

3. Nws tuaj yeem qhib thiab kaw sai sai;

4. Paub txog kev hnav tsis kam thiab kev tiv thaiv corrosion muaj zog los ntawm kev kho kom tawv;

5. Lub cev valve yog symmetrical, uas tuaj yeem tiv taus qhov siab ntawm cov kav dej thiab tuaj yeem daws tau cov xwm txheej ua haujlwm siab.

 

Npauj npaim valve: Qhov qhib thiab kaw yog ib daim disc hom npauj npaim phaj, uas yog tus yam ntxwv los ntawm:

1. Cov qauv yooj yim, me me thiab yooj yim rau kev teeb tsa;

2. Cov coefficient me me uas tsis kam rau dej, qhib thiab kaw sai;

3. Nws siv tau rau cov li qub loj;

4. Cov nplaim sib txawv siv tau rau ntau qhov chaw, suav nrog cov hmoov thiab cov khoom me me.

 

Piv nrog rau lub pob valve, lub pob valve npauj npaim muaj qhov ua tau zoo dua me ntsis, tab sis ntawm cov valve loj, lub pob valve npauj npaim muaj qhov zoo dua li lub pob valve; thaum siv los kho qhov nrawm, lub pob valve npauj npaim muaj qhov hloov kho me me, thaum lub pob valve V-hom hloov kho tau. Hauv cov kav dej siab, lub pob valve muaj qhov zoo dua li lub pob valve npauj npaim.

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Lub sijhawm tshaj tawm: Tsib Hlis-24-2021