Valve Maintenance
May 13, 2023
Kev xav tau
1.Lub valve yuav tsum muab cia rau hauv chav qhuav thiab qhov cua, thiab ob qhov kawg ntawm txoj kev yuav tsum tau thaiv.
2. Lub sijhawm ntev khaws cia li qub yuav tsum tau kuaj xyuas tsis tu ncua, cov av yuav tsum tau muab tshem tawm, thiab cov roj los tiv thaiv xeb yuav tsum tau siv rau ntawm qhov chaw ua haujlwm.
3. Tom qab kev teeb tsa, kev tshuaj xyuas tsis tu ncua yuav tsum tau nqa tawm. Cov khoom tseem ceeb tshuaj xyuas:
(1) Hnav cov txheej txheem ntawm sealing nto.
(2) Hnav khaub ncaws ntawm trapezoidal xov ntawm valve qia thiab valve qia txiv ntoo.
(3) Txawm hais tias cov khoom ntim tau dhau los thiab siv tsis tau, yog tias muaj kev puas tsuaj, nws yuav tsum tau hloov raws sijhawm.
(4) Tom qab kho lub valve thiab sib dhos, kev ntsuas kev sib khi yuav tsum tau ua.
Valve hauv kev ua haujlwm, txhua yam ntawm lub valve yuav tsum ua kom tiav thiab tsis zoo. Cov bolts ntawm flanges thiab kev txhawb nqa yog qhov tseem ceeb. Cov threads yuav tsum tsis tu ncua thiab tsis pub loosening. Yog hais tias lub fastening txiv ntseej ntawm lub handwheel yog xoob, nws yuav tsum tau nruj me ntsis raws sij hawm kom tsis txhob hnav cov kev twb kev txuas los yog poob lub handwheel thiab nameplate. Yog hais tias lub log ntawm tes poob, nws tsis raug tso cai siv lub qhov rooj hloov kho, nws yuav tsum tau muab tso rau hauv lub sijhawm. Packing gland tsis pub skew los yog tsis muaj pre-tightening clearance. Rau cov li qub uas nquag los nag, daus, plua plav, xuab zeb thiab lwm yam kab mob, lub qia valve yuav tsum tau nruab nrog lub hau tiv thaiv. Qhov ntsuas ntawm lub valve yuav tsum ua kom tiav, raug thiab meej. Valve foob, hau, pneumatic accessories, thiab lwm yam. yuav tsum ua kom tiav thiab tsis zoo. Lub tsho thermal rwb thaiv tsev yuav tsum tsis muaj sag thiab tawg. Tsis txhob khob, sawv ntsug, lossis txhawb nqa cov khoom hnyav ntawm cov khoom siv ua haujlwm; Tshwj xeeb, cov khoom tsis yog xim hlau thiab cov cam khwb cia hlau yuav tsum raug txwv.
