1. Thaum cov khoom kaw los xoob, cov dej xau tshwm sim.

vim li cas:

1. Kev ua haujlwm tsis zoo ua rau cov khoom kaw tau daig lossis dhau qhov chaw tuag sab saud, ua rau kev sib txuas puas thiab tawg;

2. Qhov kaw qhov kev sib txuas yog qhov tsis zoo, xoob, thiab tsis ruaj khov;

3. Cov khoom sib txuas tsis tau ua tib zoo xaiv, thiab nws tsis tuaj yeem tiv taus qhov nruab nrab corrosion thiab lub tshuab hnav.

Lub tswv yim kho

1. Txhawm rau kom ua haujlwm kom raug, kaw lubvalvemaj mam thiab qhib nws yam tsis tau mus saum toj kawg nkaus qhov chaw tuag. Lub handwheel yuav tsum tau tig rov qab me ntsis thaum lub valve tau qhib tag nrho;

2. Yuav tsum muaj lub nraub qaum ntawm txoj hlua txuas thiab kev ruaj ntseg ntawm qhov kaw thiab lub qia valve;

3. Cov fasteners siv los koom nrogvalveqia thiab kaw ntu yuav tsum muaj peev xwm zam qhov nruab nrab corrosion thiab muaj qee theem ntawm cov khoom siv dag zog thiab hnav tsis kam.

2. Ntim xau (sib sab ntawmvalve leakage,lub packing to yog siab tshaj).

vim li cas:

1. Kev xaiv ntim tsis raug; kev ua haujlwm ntawm lub valve ntawm qhov kub thiab txias; nruab nrab corrosion kuj; kev kub siab los yog lub tshuab nqus tsev; 2. Kev ntim khoom tsis raug, suav nrog qhov tsis zoo xws li me me rau kev hloov pauv loj, kev sib txuas tsis zoo ntawm cov hlua khi, thiab nruj rau saum thiab xoob hauv qab;

3. Cov muab tub lim tau muaj hnub nyoog, outlived nws cov txiaj ntsig, thiab poob nws qhov yooj.

4. Lub valve qia qhov precision yog tsawg, thiab muaj qhov tsis zoo xws li khoov, corrosion, thiab hnav.

5. Lub caj pas tsis nruj nruj thiab tsis muaj lub voj voog ntim txaus.

6. Lub caj pas, bolts, thiab lwm yam khoom raug puas tsuaj, ua rau nws tsis tuaj yeem thawb lub caj pas kom ruaj khov;

7. Kev siv tsis zoo, kev siv zog tsis zoo, thiab lwm yam;

8. Lub caj pas yog crooked, thiab qhov chaw nruab nrab ntawm lub caj pas thiab lub valve qia yog luv luv los yog loj heev, uas ua rau lub valve qia hnav tawm ntxov ntxov thiab cov ntim khoom ua rau raug mob.

Lub tswv yim kho

1. Cov khoom muab tub lim thiab hom yuav tsum tau xaiv raws li qhov kev khiav haujlwm;

2. Txhim kho cov ntim khoom kom raug raws li cov kev cai siv. Qhov kev sib tshuam yuav tsum nyob ntawm 30 ° C lossis 45 ° C, thiab txhua daim ntim khoom yuav tsum muab tso rau hauv ib tus zuj zus. 3. Cov ntim khoom yuav tsum tau hloov sai li sai tau thaum nws mus txog qhov kawg ntawm nws lub neej muaj txiaj ntsig, muaj hnub nyoog, lossis puas lawm;

4. Lub qia valve puas yuav tsum tau hloov tam sim tom qab tau khoov thiab hnav; ces nws yuav tsum tau straightened thiab tsau.

5. Lub caj pas yuav tsum muaj qhov sib txawv ua ntej zawm ntawm ntau tshaj 5 hli, cov khoom ntim yuav tsum haum nrog cov txheej txheem ntawm kev tig, thiab lub caj pas yuav tsum tau nruj sib npaug thiab sib npaug.

6. Cov bolts puas, qog, thiab lwm yam yuav tsum tau kho tam sim ntawd los yog hloov;

7. Cov lus qhia ua haujlwm yuav tsum tau ua raws, nrog rau kev cuam tshuam ntawm tes ua haujlwm ntawm lub zog ib txwm muaj thiab nrawm nrawm;

8. Tighten lub caj pas bolts uniformly thiab sib npaug. Qhov chaw nruab nrab ntawm lub caj pas thiab lub valve qia yuav tsum yog qhov loj kom haum yog tias nws me dhau, lossis nws yuav tsum tau hloov yog tias nws loj dhau.

3. Lub sealing nto yog to

vim li cas:

1. Lub sealing nto tsis tuaj yeem tsim ib txoj kab kaw thiab tsis tiaj tus;

2. Lub valve qia-rau-kaw cov tswv cuab kev sib txuas lub nruab nrab sab saud yog misaligned, puas, lossis dai;

3. Cov khoom kaw yog twisted los yog off-center vim lub valve qia yog deformed los yog tsim tsis tsim nyog;

4. Lub valve tsis raug xaiv raws li kev khiav hauj lwm tej yam kev mob los yog sealing nto khoom zoo tsis raug xaiv.

Lub tswv yim kho

1. Xaiv lub gasket zoo thiab cov khoom siv raws li qhov chaw ua haujlwm;

2. Ua tib zoo teeb tsa thiab ua haujlwm tau zoo;

3. Cov bolts yuav tsum sib npaug thiab sib npaug. Yog tias xav tau, lub torque wrench yuav tsum tau siv. Lub pre-tightening quab yuam yuav tsum txaus thiab tsis siab dhau los yog qis heev. Nruab nrab ntawm lub flange thiab threaded kev twb kev txuas, yuav tsum muaj ib tug pre-tightening kis;

4. Lub zog yuav tsum tsis sib xws thiab lub rooj sib dhos gasket yuav tsum nyob nruab nrab. Nws yog txwv tsis pub siv ob lub gaskets thiab overlap lub gaskets;

5. Cov txheej txheem sealing zoo li qub tau ua tiav thiab corroded, puas, thiab ua haujlwm tsis zoo. Txhawm rau kom ntseeg tau tias qhov zoo li qub sealing nto ua tiav cov txheej txheem tsim nyog, yuav tsum tau kho, sib tsoo, thiab kuaj xim;

6. Ua tib zoo saib xyuas kev huv thaum muab lub gasket. Kerosene yuav tsum tau siv los ntxuav lub sealing nto, thiab lub gasket yuav tsum tsis txhob poob rau hauv av.