Kev tsim kho ua haujlwm
Kev txhim kho thiab kev tsim kho yuav tsum tau ceev faj, thiab tsis txhob tsoo lub valve ua los ntawm cov khoom siv nkig.
Ua ntej kev teeb tsa, lub valve yuav tsum raug tshuaj xyuas, cov lus qhia tshwj xeeb thiab cov qauv yuav tsum tau kuaj xyuas, thiab txhua qhov kev puas tsuaj yuav tsum raug txheeb xyuas, tshwj xeeb tshaj yog rau lub qia valve. Nws yog ib qho tsim nyog yuav tsum tig nws ob peb zaug kom pom tias nws yog skewed, vim hais tias lub valve qia feem ntau yuav tsum khob thaum lub sij hawm thauj mus los. Kuj tshem cov khib nyiab los ntawm lub valve.
Thaum lub valve yog lifted, txoj hlua yuav tsum tsis txhob muab khi rau ntawm tes los yog lub qia, thiaj li tsis ua kom puas cov khoom no, nws yuav tsum tau khi rau lub flange.
Lub raj xa dej uas lub valve txuas nrog yuav tsum tau muab ntxuav. Cov cua compressed tuaj yeem siv los tshuab cov hlau oxide chips, av nkos, vuam slag thiab lwm yam khib nyiab. Cov khib nyiab no tsis yog yooj yim rau khawb qhov sealing nto ntawm lub valve. Ntawm lawv, cov khoom loj ntawm cov khib nyiab (xws li vuam slag) tuaj yeem thaiv lub valve me me thiab ua rau nws tsis raug.
Thaum txhim kho cov ntsia hlau valve, lub sealing packing (hlau hemp ntxiv rau txhuas roj los yog PTFE raw khoom daim kab xev) yuav tsum tau qhwv rau ntawm cov yeeb nkab xov. Tsis txhob nkag mus rau hauv lub valve, txwv tsis pub lub valve yuav sib sau ua ke thiab cuam tshuam rau qhov nruab nrab ncig.
Thaum txhim kho lub flange valve, xyuam xim rau zawm cov bolts symmetrically thiab tusyees. Lub valve flange thiab cov yeeb nkab flange yuav tsum ua tib zoo sib xws thiab qhov sib txawv yog tsim nyog kom tsis txhob muaj siab dhau los yog tawg ntawm lub valve. Kev saib xyuas tshwj xeeb yuav tsum tau them rau li qub nrog cov khoom siv nkig thiab tsis muaj zog. Valves uas yuav tsum tau welded rau cov yeeb nkab yuav tsum tau welded ua ntej, ces lub kaw qhov yuav tsum tau qhib tag nrho, thiab ces welded mus rau tuag.
