Valve tshuaj xyuas thiab xaiv cov kauj ruam Valve ib feem tsis ua haujlwm ua rau thiab kho

Valve tshuaj xyuas thiab xaiv cov kauj ruam Valve ib feem tsis ua haujlwm ua rau thiab kev saib xyuas Kev Ua Haujlwm Kev Ua Haujlwm: qhov kev ua tau zoo ntawm lub valve suav nrog lub zog, kev sib khi, ntws tsis kam, kev ua haujlwm thiab kev pabcuam lub neej ntawm tsib yam. Valve cov khoom ua ntej lub Hoobkas yuav tsum yog lub zog kuaj thiab sealing kev ua tau zoo, rau qee qhov tshwj xeeb tseem ceeb li qub, yuav tsum yog nyob rau hauv cov qauv batch rau kev khiav hauj lwm, kev ua haujlwm thiab kev pab cuam lub neej peb yam ntawm kev ntsuas kev ua tau zoo, rau kev nyab xeeb valve kom qhib siab, rov qab siab. thiab kev xeem khiav; Rau lub siab txo valve ua rhiab heev kuaj; Rau kev ntxiab los ua qhov kev sim hloov chaw... Valve tshuaj xyuas Lub Hoobkas kev tshuaj xyuas cov khoom valve yuav tsum tau ua raws li cov qauv hauv lub tebchaws thiab cov qauv kev lag luam. Yog tias yuav tsum muaj daim ntawv pov thawj cuam tshuam, thov qhia nws thaum tso qhov kev txiav txim, thiab cov nqi cuam tshuam yuav raug them raws li cov ntsiab lus xeem. 1 Lub Hoobkas kev tshuaj xyuas cov li qub feem ntau suav nrog peb cov ntsiab lus hauv qab no: ● Tshawb xyuas seb cov khoom puas, qhov khoob, machining thiab kev sib dhos ntawm lub valve ua tau raws li cov qauv kev qhia; ● Kev ntsuas kev ua tau zoo: qhov kev ua tau zoo ntawm lub valve suav nrog lub zog, sealing, ntws tsis kam, kev ua haujlwm thiab kev pabcuam lub neej ntawm tsib yam. Valve cov khoom ua ntej lub Hoobkas yuav tsum yog lub zog kuaj thiab sealing kev ua tau zoo, rau qee qhov tshwj xeeb tseem ceeb li qub, yuav tsum yog nyob rau hauv cov qauv batch rau kev khiav hauj lwm, kev ua haujlwm thiab kev pab cuam lub neej peb yam ntawm kev ntsuas kev ua tau zoo, rau kev nyab xeeb valve kom qhib siab, rov qab siab. thiab kev xeem khiav; Rau lub siab txo valve ua rhiab heev kuaj; Rau qhov ntxiab los ua qhov kev txav chaw; ● Kev tshuaj xyuas cov cim thiab kev txheeb xyuas cov xim pleev xim, ntim thiab lwm yam yog ua raws li cov kev cai cuam tshuam, daim ntawv pov thawj khoom thiab cov lus qhia cov khoom thiab lwm cov ntaub ntawv kev ua tiav. ● Ntsuas qhov loj: tswj qhov loj ntawm qhov kawg txuas thiab qhov nrug ntawm qhov chaw. (Daim duab 1) Integrated pob valve sab mounting hom Kev taw qhia txog cov khoom tseem ceeb hauv kev tsim cov txheej txheem ● Tshuaj muaj pes tsawg leeg Ua ntej casting, muaj pes tsawg leeg ntawm txhua lub cub tawg yog soj ntsuam los ntawm spectral analyzer, thiab cov muaj pes tsawg leeg yog tsim nyog ua ntej casting ● Metallography, mechanical properties parameters, hardness ◆ Kev kho cua sov (austenitic stainless hlau CF8, CF8M, CF3M thiab lwm yam khoom siv kho mob; Tom qab normalizing cov pa roj carbon steel), kev soj ntsuam metallographic yog nqa tawm thiab cov duab metallographic tseem tshuav. Tsis tsim nyog tsis tig kev txiav txim ◆ Thaum casting, txhua lub cub tawg muaj 2 tus qauv ntsuas ntsuas thiab 2 daim ntawv xeem (nrog rau cov khoom siv hluav taws xob tib yam muaj tib lub tshuab hluav taws xob rau kev tswj xyuas), tom qab kev kho cua sov - (Daim duab 2) ob lub pob valve ① Ib qho ntawm cov pas ntsuas tau raug coj los ua qhov kev sim tensile nrog lub tshuab ntsuas tensile kom tau txais cov khoom muaj feem xyuam nrog cov tsis muaj: tensile lub zog, yield zog, elongation, cheeb tsam txo ② Ib qho ntawm cov qauv raug kuaj los ntawm Brinell hardness tester kom tau qhov hardness HB nqi; Yog tias tsim nyog, txiav rau hauv cov ntawv xeem cuam tshuam nrog kev ntsuas kev cuam tshuam lub tshuab kev cuam tshuam, kom tau txais qhov cuam tshuam tus nqi (3) Qhov seem 1 xeem pas nrig thiab 1 qhov ntsuas ntsuas rau cia, ua ke nrog qhov ntsuas tau raug rhuav tshem 1 lub pas ntsuas thiab ntsuas ntsuas thiab Cov khoom siv hluav taws xob tsom xam cov khoom siv hluav taws xob sib txuas ua ke, khaws cia rau hauv qhov ntsuas pas nrig cia khib rau ob xyoos (Daim duab 3) integrated pob valve sab saum toj mounting hom ● Electrostatic test Tom qab valve sib dhos thiab ua ntej kev ntsuas siab, hauv lub xeev qhuav, siv lub ntsuas universal los kuaj cov tsis kam ntawm 12 VDC, raws li API608 tsis kam ≤10 ohms (Ceeb Toom: Kev kub ceev los ntawm cov kua hauv lub raj xa dej, kev sib txhuam yog ib qho yooj yim los tsim hluav taws xob zoo li qub, vim rau hluav taws xob rwb thaiv tsev, lub rooj muag muag, xws li PTFE yeeb nkab rwb thaiv tsev pob valve thiab valve. lub cev, ua rau lub zos electrostatic nce los yog concentrated, yooj yim los tsim muaj kev pheej hmoo ntawm lub txim, yog li yuav tsum tau tsim ntawm conductive antistatic concentration ntaus ntawv, API608 kev cai ntawm lub valve qia thiab valve lub cev ntawm tus neeg xyuas pib kuj yuav tsum tsawg tshaj li 10 Ω) Tsawg torque nqi Tom qab 6Kg / cm2 huab cua siab ntsuas ntawm lub valve, tus nqi torque ntawm lub valve yog tau los ntawm torsion meter nyob rau hauv huv thiab tsis muaj roj lub xeev ● Kev kuaj lub neej Txhua yam khoom tshiab tsim, los yog valve lub cev, valve cover, valve rooj, valve qia thiab packing box structural size design change, or valve seat, packing material change, will use life testing machine to do life test Valve xaiv cov kauj ruam ● Cov yam ntxwv thiab lub luag haujlwm tseem ceeb ntawm lub valve tau sau tseg hauv Table 11 thiab Table 12 ● Nominal inch lossis flow - xa mus rau cov chaw tsim khoom cov ntawv teev npe los xaiv qhov tsim nyog valve txoj kab uas hla ● Rated siab - qhov kub thiab txias - Xa mus rau Table 3: Rated siab ntawm cov hlau valve - qhov kub thiab txias ● Valve davhlau ya nyob twg daim ntawv - saib cov seem dhau los (FIG. 4) Peb-thooj pob valve ● Valve cov khoom siv - corrosion kuj, kub. Xa mus rau Table 4: kub txwv rau valve vaj tsev xaiv cov khoom siv; Table 5: Kub txwv ntawm qhov tshwj xeeb fittings ntawm li qub; Table 6: corrosion kuj rooj ntawm cov ntaub ntawv hlau; Table 7: Daim ntawv teev cov khoom erosion resistance Table 8: Cov ntaub ntawv mos mos uas siv tau rau qhov kub thiab txias ● Valve npog daim ntawv - xauv cov hniav sib xyaw hom; Bolted hom; Circumferential vuam hom; Siab foob; Kev sib xyaw ua ke ● Cov kev cai tshwj xeeb - raws li kev siv qhov kub thiab txias, qhov chaw sib txawv, thiab cov kev cai tshwj xeeb ■ Kev tiv thaiv hluav taws thiab tiv thaiv zoo li qub. Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev tsim thiab siv cov pob li qub ■ Kev tsim lub kaus mom txuas ntxiv. Siv nyob rau hauv lub tub yees valve rau conveying liquefied gas ■ suab nrov thiab cavitation txwv. Tshwj xeeb tshaj yog rau kev tsim thiab siv cov tswj li qub ■ Siv cov qauv tsim ntawm lub hnab nthuav tawm tiv thaiv cov khoom xau. ● Kev ua haujlwm hom - saib ntau yam piav qhia hauv ntu 1.1 saum toj no. Feem ntau txwv rau kev teeb tsa ib puag ncig, kev ua haujlwm, kev ua haujlwm lossis lub sijhawm, thiab kev xav txog hluav taws xob, hluav taws xob tsav; Tab sis vim yog kev lag luam thiab ua haujlwm ntev ntawm tes log lossis iav reducer, nws tseem siv los ntawm cov neeg feem coob. Table 11 Cov yam ntxwv dav dav ntawm lub valve Ua rau thiab kev saib xyuas ntawm ib feem ntawm lub valve tsis ua hauj lwm Packing leak Qhov ua rau muaj teeb meem ● Kev xaiv cov khoom ntim tsis raug, thiab qhov nruab nrab corrosive, kub, siab tsis hloov. ● Packing installation tsis raug, tshwj xeeb tshaj yog tag nrho cov packing nyob rau hauv reserves rotation, yooj yim los tsim to. ● Muab tso rau hauv lub sijhawm siv, muaj kev laus, poob elasticity. ● Muaj pes tsawg lub nplhaib ntim khoom tsis txaus. ● Cov txheej txheem ua kom raug lossis nto tiav tsis txaus, lossis ellipticity, lossis notch. ● Kev ua haujlwm tsis raug, kev siv zog ntau dhau. Txoj kev tu vaj tse ● Cov khoom siv muab tub lim thiab hom yuav tsum raug xaiv raws li kev ua haujlwm. ● Co, lub hauv paus ntawm lub kauj yuav tsum muab tso rau thiab nias ib puag ncig ib puag ncig, qhov sib koom ua ke yuav tsum yog 30 lossis 45. ● Kev laus thiab cov khoom puas yuav tsum tau hloov raws sijhawm. ● Lub tshuab filling yuav tsum tau muab ntsia raws li tus lej teev. ● Ua raws li cov cai ntawm kev ua haujlwm, tshwj tsis yog qhov cuam tshuam ntawm tes, nrog rau kev ceev nrawm thiab kev ua haujlwm ntawm lub zog ib txwm muaj. ● Gland bolts yuav tsum tau nruj sib npaug thiab sib npaug. Cov dej ntws tawm ntawm gasket yog vim li cas ● Gasket tsis tiv taus corrosion, siab siab, nqus, siab lossis qis. ● Kev ua haujlwm tsis zoo, ua rau lub valve siab, kub hloov pauv. ● Gasket compression quab yuam tsis txaus. ● Kev sib dhos tsis zoo ntawm gasket, lub zog tsis sib xws. ● Gasket nto ntxhib, tov nrog txawv teb chaws. Txoj kev tu ● Gasket cov khoom yuav tsum raug xaiv raws li kev ua haujlwm. ● Ua tib zoo kho, ua haujlwm du. ● Bolts yuav tsum tau nruj tusyees thiab symmetrically. ● Gasket los ua ke yuav tsum muaj zog sib xws, gasket tsis pub rau lap thiab siv ob chav gasket. ● Ua tib zoo saib xyuas thaum txhim kho gaskets, thiab ntxuav lub sealing nto nrog kerosene. Cov dej ntws tawm ntawm qhov sealing nto yog vim li cas ● Lub sealing nto tsis sib xws thiab tsis tuaj yeem tsim ib txoj kab nruj. ● qia thiab kaw qhov chaw ntawm qhov txuas txuas txuas, ncaj lossis hnav. ● Qws dabtsi yog khoov lossis sib dhos tsis raug, kom cov khoom kaw tau skewed. ● Kev xaiv tsis raug ntawm cov khoom siv sealing nto, sealing nto corrosion, yaig, hnav. ● Surfacing thiab kev kho cua sov tsis ua raws li cov cai ntawm kev ua haujlwm, hnav, corrosion, tawg, thiab lwm yam. ● Lub sealing nto tev tawm. Kev tu cov txheej txheem ● Sealing nto sib tsoo, sib tsoo cov cuab yeej, xaiv tus neeg sawv cev abrasive yog tsim nyog, tom qab sib tsoo xim tshuaj xyuas, sealing nto tsis muaj indentation, tawg, khawb thiab lwm yam tsis xws luag. ● Sab saum toj nruab nrab ntawm kev sib txuas ntawm lub qia thiab qhov kaw qhov tsis ua raws li qhov yuav tsum tau ua, yuav tsum tau txiav, qhov chaw saum toj kawg nkaus yuav tsum muaj qee yam kev ua haujlwm clearance, axial clearance nruab nrab ntawm lub xub pwg nyom thiab qhov kaw tsis tsawg dua 2 mm. ● Ncaj thiab khoov qia, kho qia, qia txiv ntoo, kaw qhov chaw, lub rooj zaum ntawm ib qho axis. ● Kev xaiv ntawm corrosion kuj, abrasion kuj thiab lwm yam kev ua tau zoo nyob rau hauv txoj kab nrog rau kev ua hauj lwm ntawm lub sealing nto. ● Kub kub valve, tom qab kaw qhov txias shrinkage tshwm zoo seam, tom qab kaw lub caij nyoog ntawm ib lub sij hawm los kaw dua. ● Txhawm rau txiav tawm lub valve, tsis tso cai rau siv lub throttle valve, txo lub valve, kaw qhov chaw yuav tsum qhib tag nrho los yog kaw tag nrho txoj hauj lwm, yog tias yuav tsum tau kho qhov nruab nrab ntws thiab siab, yuav tsum tau muab cais throttle valve thiab txo valve. ● Lub sealing nto uas tsis tuaj yeem hloov kho yuav tsum tau hloov raws sijhawm. Kaw daim tawm yog vim li cas ● Kev ua haujlwm tsis zoo, kom cov khoom kaw tau daig lossis ntau tshaj qhov chaw tuag saum toj kawg nkaus, kev sib koom ua ke puas tsuaj. ● Cov khoom kaw tsis ruaj khov, xoob thiab poob. ● Cov khoom siv sib txuas tsis raug, tsis tuaj yeem tiv taus corrosion ntawm nruab nrab thiab siv tshuab. Kev tu cov txheej txheem ● Txhawm rau ua haujlwm kom raug, kaw lub valve tsis tuaj yeem nyuaj dhau, qhib lub valve tsis tuaj yeem tshaj qhov chaw tuag saum toj kawg nkaus, lub valve qhib tag nrho, handwheel yuav tsum thim rov qab me ntsis. ● Kev sib txuas ntawm qhov chaw kaw thiab qia yuav tsum raug thiab ruaj khov, thiab yuav tsum tsis muaj qhov rov qab los ntawm cov xov txuas. ● Cov fasteners txuas lub kaw qhov chaw thiab lub valve qia yuav tsum tiv thaiv corrosion ntawm nruab nrab, thiab muaj ib tug tej yam mechanical zog thiab hnav tsis kam, lub kaw qhov chaw poob txawm tias tsawg, tab sis nws yog heev txaus ntshai txhaum. Cov qia tsis hloov pauv yog vim li cas ● Lub qia valve thiab nws cov khoom sib txuam muaj qhov tseeb ntawm machining tsawg thiab kev tshem tawm me me. ● Cov axes ntawm qia, qia txiv ntoo, bracket, caj pas thiab ntim khoom tsis nyob hauv txoj kab ncaj nraim. ● Ntim nruj dhau. ● qia khoov thiab puas. ● Cov xov tsis huv lossis xeb, tsis zoo lubrication. ● Cov txiv ntseej xoob, xov xaim xaim. ● Kev sib txuas ntawm lub qia valve thiab cov khoom sib kis tau xoob lossis puas. Txoj kev tu ● Txhim kho qhov ua tau zoo thiab kho qhov zoo ntawm cov qia thiab cov txiv ntoo, kom qhov kev tshem tawm yuav tsum tsim nyog. ● Sib dhos qia thiab fittings, clearance yog zoo ib yam, concentric, hloov tau yooj yim. ● Ntim nruj dhau, so lub caj pas kom zoo. ● Cov qia bending yuav tsum raug kho, nyuaj kho, yuav tsum tau hloov. Ua haujlwm qia nrog lub zog kaw kom raug. ● qia, qia txiv ntoo threads yuav tsum nquag ntxuav thiab ntxiv cov roj lubricating, rau qhov kub thiab txias, yuav tsum tau coated nrog disulfide tus pin los yog graphite hmoov rau lubrication. ● Cov txiv ntoo xoob yuav tsum tau kho, tsis tuaj yeem kho lub sijhawm hloov. ● Ua kom cov txiv ntseej roj du, lubrication zoo, tsis txhob nquag khiav lub valve, tsis tu ncua xyuas thiab kev ua haujlwm ntawm lub qia, pom qhov tshwm sim hnav thiab tom, kho raws sij hawm qia txiv ntoo, bracket thiab lwm yam khoom siv. ● Txhawm rau khiav lub valve kom raug, kaw quab yuam yuav tsum tsim nyog kom tsis txhob qia deformation thiab puas. ● Tom qab kaw, thaum lub valve yog rhuab thiab txuas ntxiv, tom qab lub valve kaw, ntawm ib lub sij hawm, tig lub handwheel clockwise me ntsis los tiv thaiv lub qia los ntawm kev tua. , Cov dej ntws tawm ntawm lub cev thiab lub kaus mom yog vim li cas ● Lub valve lub cev muaj xuab zeb qhov los yog tawg. ● Valve lub cev tensile tawg thaum kho vuam. Kev tu cov txheej txheem ● Qhov xav tias qhov chaw tawg yuav polished, nrog 4% nitric acid tov etching, xws li cov kab nrib pleb tuaj yeem pom. ● Excavate lossis hloov qhov tawg.