Tshawb xyuas Valve Xaiv Cov Qauv

1. Txhawm rau tiv thaiv kev thim rov qab ntawm qhov nruab nrab, cov tshev valve yuav tsum tau nruab rau ntawm cov khoom siv, cov khoom siv thiab cov kav dej;
2. Lub check valve feem ntau haum rau cov xov xwm huv si, thiab yuav tsum tsis txhob siv rau cov xov xwm uas muaj cov khoom siv thiab cov viscosity loj;
3. Nyob rau hauv dav dav, ntsug nqa check li qub yuav tsum tau siv nyob rau hauv nominal kab rov tav pipelines mus txog 50 hli;
4. Txoj kev nqa ncaj nraim tuaj yeem ntsia tau rau ntawm ob txoj kab kab rov tav thiab ntsug;
5. Rau lub twj tso kua mis inlet yeeb nkab, nws yog tsim nyog los xaiv lub hauv qab valve, lub hauv qab valve feem ntau tsuas yog ntsia rau ntawm ntsug yeeb nkab ntawm lub twj tso kua mis inlet, thiab qhov nruab nrab ntws los ntawm hauv qab no;
6. Nqa hom viav vias hom sealing yog qhov zoo, cov dej tsis kam yog qhov loj, kab rov tav yuav tsum tau nruab rau ntawm cov yeeb nkab kab rov tav, ntsug ntsia rau ntawm cov yeeb nkab ntsug;
7. Lub installation txoj hauj lwm ntawm lub viav vias kos valve tsis txwv, nws tuaj yeem ntsia tau rau ntawm kab rov tav, ntsug lossis inclined pipeline, xws li ntsia rau ntawm txoj kab ntsug, qhov nruab nrab ntws kev taw qhia yuav tsum yog los ntawm hauv qab mus rau sab saum toj;
8, viav vias kos valve yuav tsum tsis txhob ua rau hauv me me txoj kab uas hla li qub, tuaj yeem ua rau kev ua haujlwm siab, PN tuaj yeem ncav cuag 42MPa, thiab DN tuaj yeem loj heev, qhov siab tshaj plaws tuaj yeem ncav cuag 2000mm lossis ntau dua. Raws li cov khoom siv ntawm lub plhaub thiab lub foob, nws tuaj yeem siv rau txhua qhov chaw ua haujlwm thiab txhua qhov kev ua haujlwm kub. Qhov nruab nrab yog dej, chav, roj, nruab nrab corrosive, roj, tshuaj, thiab lwm yam. Qhov nruab nrab kev khiav hauj lwm kub ntawm -196--800 degree ;
9. Lub sijhawm thov yog tsis tshua muaj siab thiab txoj kab uas hla loj, thiab lub sijhawm teeb tsa tsuas yog txwv;
10. Npauj npaim check valve installation txoj hauj lwm tsis txwv, tuaj yeem ntsia tau rau ntawm cov yeeb nkab kab rov tav, tuaj yeem ntsia tau rau ntawm txoj kab ntsug lossis inclined;
11. Diaphragm check valve yog tsim rau yooj yim los tsim dej rauj yeeb nkab, diaphragm tuaj yeem tshem tawm cov dej rauj uas tsim los ntawm qhov nruab nrab countercurrent, feem ntau yog siv rau hauv cov yeeb nkab uas tsis tshua muaj siab kub, tshwj xeeb tshaj yog tsim rau cov kav dej, qhov nruab nrab nruab nrab ua haujlwm kub. nruab nrab ntawm -12--120 degree, kev ua haujlwm siab "1.6MPa, tab sis lub diaphragm check valve tuaj yeem ua tiav qhov loj dua caliber, Qhov siab tshaj plaws DN tuaj yeem ncav cuag ntau dua 2000mm;
12. Lub voj voos kheej kheej yog tsim rau cov kav dej nruab nrab thiab tsis tshua muaj siab thiab tuaj yeem ua rau cov caliber loj;
13. Cov khoom siv ntawm lub plhaub kheej kheej tuaj yeem ua los ntawm cov hlau tsis muaj steel, lub hollow sphere ntawm lub foob tuaj yeem qhwv hauv polytetrafluoroethylene engineering yas, yog li nws kuj tuaj yeem siv rau hauv cov kav dej ntawm qhov nruab nrab corrosive, kev ua haujlwm kub yog nruab nrab ntawm -101 thiab 150 degree C, nws cov nominal siab yog tsawg dua 4.0MPa, thiab qhov nominal passage range yog nyob nruab nrab ntawm 200-1200;
14. Thaum xaiv lub check valve rau incompressible fluids, thawj kauj ruam yog los soj ntsuam qhov yuav tsum tau kaw ceev, thiab lub thib ob kauj ruam yog xaiv hom check valve uas yuav ua tau raws li qhov yuav tsum tau kaw ceev;
15. Rau compressible kua nrog kos valve xaiv yuav ua tau raws li incompressible kua nrog ib tug zoo xws li cov txheej txheem ntawm kos valve xaiv, yog hais tias lub nruab nrab ntws ntau yam yog loj, ces lub kos valve rau compressible kua siv tau ib tug deceleration ntaus ntawv, yog hais tias lub nruab nrab ntws yog. nruam thiab ceev ceev nres thiab pib, xws li lub qhov hluav taws xob ntawm lub compressor, ces kev siv lub tshuab nqa check valve;
16. Lub pob valve yuav tsum txiav txim siab qhov loj ntawm cov lus teb, thiab cov khoom siv lub valve yuav tsum muab cov ntaub ntawv ntawm qhov kev xaiv loj, kom lub valve loj tuaj yeem pom thaum lub valve qhib tag nrho ntawm qhov muab ntws;
17. Rau siab thiab siab siab check li qub hauv qab DN50mm, ntsug nqa check li qub thiab ncaj-los ntawm nqa kos li qub yuav tsum raug xaiv;
18. Rau qhov ntsuas qis qis hauv qab DN50mm, npauj npaim kos valve, ntsug nqa daim tshev valve thiab diaphragm kos valve yuav tsum raug xaiv;
19. Rau siab thiab nruab nrab siab check li qub nrog DN ntau dua 50mm thiab tsawg dua 600mm, viav vias kos li qub yuav tsum raug xaiv;
20. Rau nruab nrab thiab tsis tshua muaj siab check li qub nrog DN ntau dua 200mm thiab tsawg tshaj li 1200mm, yuav tsum tau xaiv cov uas tsis hnav spherical check li qub;
21. Rau qhov ntsuas qis qis nrog DN ntau dua 50mm thiab tsawg dua 2000mm, tus npauj npaim kos valve thiab diaphragm kos valve raug xaiv;
22. Rau cov kav xa dej uas xav tau me me los yog tsis muaj dej cuam tshuam thaum kaw, qeeb kaw viav vias kos li qub thiab qeeb kaw npauj npaim kos li qub yuav tsum tau xaiv.