1. Lub rooj vag valve tu
1.1 Lub ntsiab technical parameters:
DN: NPS1 "~ NPS28"
PN: CL150-CL2500
Khoom siv ntawm cov khoom tseem ceeb: ASTM A216 WCB
Qauv: ASTM A276 410; Rooj zaum-ASTM A276 410;
Lub ntsej muag-VTION
1.2 Cov Cai thiab Cov Qauv: API 6A, API 6D
1.3 Cov qauv ntawm lub valve (saib daim duab 1)
Fig.1 Rooj vag valve
2. Kev tshuaj xyuas thiab kev saib xyuas
2.1: Kev soj ntsuam ntawm sab nrauv:
Tshawb xyuas qhov chaw sab nraud ntawm lub valve los xyuas seb puas muaj kev puas tsuaj, thiab tom qab ntawd suav nrog; Ua ib daim ntawv.
2.2 Tshawb xyuas lub plhaub thiab sealing:
Tshawb xyuas seb puas muaj qhov tshwm sim ntawm cov dej xau thiab ua cov ntaub ntawv tshuaj xyuas.
3. Disassemble ntawm lub Valve
Valve yuav tsum raug kaw ua ntej disassemble thiab loosen cov bolts txuas. Yuav tsum xaiv qhov tsim nyog tsis-kho spanner rau looser bolts, Ceev yuav tsum tau puas yooj yim los ntawm adjustable spanner.
Rusty bolts thiab txiv ntseej yuav tsum tau tsau nrog roj av los yog kua xeb tshem tawm; Xyuas cov ntsia hlau xov kev taw qhia thiab ces twist maj mam. Disassembled cov khoom yuav tsum tau suav nrog, cim thiab khaws cia hauv kev txiav txim. Cov qia thiab rooj vag disc yuav tsum tau muab tso rau ntawm bracket kom tsis txhob khawb.
3.1 Kev ntxuav
Xyuas kom tseeb tias cov khoom seem raug ntxuav kom mos los ntawm txhuam nrog Kerosene, roj av, lossis tshuaj ntxuav.
Tom qab ntxuav, xyuas kom meej tias cov khoom seem tsis muaj roj & xeb.
3.2 Kev tshuaj xyuas cov khoom seem.
Tshawb xyuas tag nrho cov khoom seem thiab ua cov ntaub ntawv.
Ua ib qho kev npaj kho kom haum raws li qhov kev tshuaj ntsuam xyuas.
4. Kho cov khoom seem
Kho cov khoom seem raws li kev tshuaj xyuas thiab kev npaj kho; hloov cov khoom seem nrog tib cov ntaub ntawv yog tias xav tau.
4.1 Kho qhov rooj:
① Kho T-slot: Vuam tuaj yeem siv rau hauv T-slot fracture kho, Kho T-slot distortion, Weld ob sab nrog reinforcing bar. Surfacing welding tuaj yeem siv los kho T-qhov hauv qab. Los ntawm kev siv cov kev kho cua sov tom qab vuam txhawm rau txhawm rau tshem tawm kev ntxhov siab thiab tom qab ntawd siv PT nkag mus kuaj.
② Kho qhov poob:
Muab pov tseg txhais tau tias qhov sib txawv lossis qhov tsis sib haum xeeb ntawm lub qhov rooj sealing lub ntsej muag thiab lub ntsej muag Seat sealing. Yog hais tias qhov sib npaug ntawm lub rooj vag valve poob, tuaj yeem txuas sab saum toj thiab hauv qab, ces, txheej txheem sib tsoo.
4.2 Kho lub ntsej muag sealing
Qhov laj thawj tseem ceeb ntawm valve sab hauv to yog sealing lub ntsej muag puas. Yog hais tias kev puas tsuaj loj heev, yuav tsum tau welding, machining thiab grind sealing lub ntsej muag. Yog tsis loj, tsuas yog sib tsoo. Kev sib tsoo yog txoj hauv kev tseem ceeb.
a. Lub hauv paus ntsiab lus ntawm kev sib tsoo:
Koom rau saum npoo ntawm cov cuab yeej sib tsoo ua ke nrog workpiece. Txhaj tshuaj abrasive rau hauv qhov sib txawv ntawm qhov chaw, thiab tom qab ntawd txav cov cuab yeej sib tsoo kom zom.
b. Sib tsoo ntawm rooj vag sealing ntsej muag:
Kev sib tsoo hom: phau ntawv ua haujlwm
Smear abrasive ntawm lub phaj sib npaug, muab cov khoom ua haujlwm rau ntawm lub phaj, thiab tom qab ntawd tig thaum sib tsoo hauv txoj kab ncaj nraim los yog "8".
4.3 Kho ntawm qia
a. Yog hais tias ib qho khawb ntawm qia sealing lub ntsej muag los yog qhov chaw ntxhib tsis tuaj yeem phim tus qauv tsim, lub ntsej muag sealing yuav tsum tau kho. Kho txoj kev: tiaj sib tsoo, voj voog sib tsoo, Gauze sib tsoo, tshuab sib tsoo thiab Cone sib tsoo;
b. Yog hais tias valve qia bent> 3%, txheej txheem Ncaj qha kev kho mob los ntawm qhov chaw tsawg sib tsoo tshuab kom paub tseeb tias nto tiav thiab txheej txheem tawg nrhiav kom tau. Txoj kev ncaj ncaj: Static siab straightening, Txias straightening thiab cua sov straightening.
c. qia taub hau kho
Lub taub hau txhais tau hais tias qhov chaw ntawm qia (stemsphere, qia saum toj, sab saum toj, txuas trough thiab lwm yam) txuas nrog qhib-thiab-kaw qhov chaw. Kho txoj kev: txiav, vuam, ntxig nplhaib, ntxig ntsaws thiab lwm yam.
d. Yog tias tsis tuaj yeem ua tau raws li qhov yuav tsum tau kuaj xyuas, yuav tsum rov ua dua nrog cov khoom qub.
4.4 Yog tias muaj kev puas tsuaj nrog lub ntsej muag ntawm flange ntawm ob sab ntawm lub cev, yuav tsum ua cov txheej txheem machining kom phim tus qauv yuav tsum tau ua.
4.5 Ob sab ntawm lub cev RJ kev sib txuas, yog tias tsis tuaj yeem ua raws li tus qauv xav tau tom qab kho, yuav tsum tau welded.
4.6 Hloov cov khoom hnav
Hnav cov khoom xws li gasket, packing, O-ring thiab lwm yam. Npaj hnav cov khoom raws li kev saib xyuas thiab ua cov ntaub ntawv.
5. Sib dhos thiab installation
5.1 Kev Npaj: Npaj kho cov khoom seem, gasket, packing, installation cov cuab yeej. Muab tag nrho cov khoom nyob rau hauv kev txiav txim; tsis txhob pw hauv av.
5.2 Kev kuaj xyuas: Ntxuav cov khoom seem (faj, kaw, qia, txiv ntseej, lub cev, lub kaus mom, tus quab thiab lwm yam) nrog Kerosene, roj av lossis tshuaj ntxuav. Xyuas kom tsis muaj roj & xeb.
5.3 Kev teeb tsa:
Thaum xub thawj, xyuas qhov indentation ntawm qia thiab lub qhov rooj sealing lub ntsej muag paub meej tias qhov sib txuas;
Tshem tawm, so lub cev, lub kaus mom, lub rooj vag, lub ntsej muag sib khi kom huv si, Txhim kho cov khoom seem hauv kev txiav txim thiab ceev cov bolts symmetrically.
Post lub sij hawm: Nov-10-2020