Mayeso a Valve Pressure Test Leakage Test ndi Njira Yogwirira Ntchito Yogawana Magawo Agawo

Mayeso a Valve Pressure Test Leakage Test ndi Njira Yogwirira Ntchito Yogawana Magawo Agawo

Pamene payipi ikugwiritsidwa ntchito koyamba, pali dothi lamkati, ndivalavu ikhoza kutsegulidwa pang'ono, kuthamanga kwambiri kwa sing'anga kumatha kugwiritsidwa ntchito kutsuka, kenako kutsekedwa pang'onopang'ono (osati kutsekedwa mwachangu, kutsekedwa koopsa, kuteteza zotsalira zotsalira kuti zisatseke kusindikiza pamwamba), kutsegula kachiwiri, kubwereza zambiri. nthawi, kusamba dothi, ndiyeno kuika mu ntchito yachibadwa. Nthawi zambiri mutsegule valve, pangakhale dothi pamtunda wosindikiza. Potseka, njira yomwe ili pamwambayi iyeneranso kugwiritsidwa ntchito kutsuka, ndikutseka mwalamulo. Ngati handwheel ndi chogwirira chawonongeka kapena kutayika, ziyenera kumalizidwa nthawi yomweyo, ndipo sizingasinthidwe ndi manja osunthika mbale, kuti zisawononge tsinde la quartet, kutsegula ndi kutseka sikothandiza, zomwe zimapangitsa kuti pakhale ngozi popanga.
Njira yogwiritsira ntchito valve
Kwa ma valve, sikuti ayenera kukhazikitsa ndi kusamalira, komanso kugwira ntchito.
(a) Kutsegula ndi kutseka kwa valve pamanja
Valavu yamanja ndiyo valavu yomwe imagwiritsidwa ntchito kwambiri, gudumu lamanja kapena chogwirira chake, idapangidwa molingana ndi anthu wamba, poganizira mphamvu yosindikiza komanso mphamvu yotseka yofunikira. Chifukwa chake simungagwiritse ntchito lever yayitali kapena spinner yayitali. Anthu ena anazolowera kugwiritsa ntchito wrench, ayenera kulabadira kwambiri, osati mphamvu kwambiri, mwinamwake zosavuta kuwononga kusindikiza pamwamba, kapena mbale wosweka gudumu dzanja, chogwirira.
Tsegulani ndi kutseka valavu, mphamvu iyenera kukhala yosalala, osati zotsatira. Kutsegula kwina ndi kutseka kwa zigawo zothamanga kwambiri zavala mphamvu zomwe zimakhudzidwa ndipo valavu yonseyo siyingadikire. Kwa valavu ya nthunzi, musanatsegule, iyenera kutenthedwa pasadakhale ndipo madzi osungunuka ayenera kuchotsedwa. Potsegula, kuyenera kukhala pang'onopang'ono momwe mungathere kuti mupewe zochitika za kugunda kwamadzi.
Vavu ikatsegulidwa kwathunthu, gudumu lamanja liyenera kusinthidwa pang'ono, kuti ulusiwo ukhale pakati pa zolimba, kuti zisawonongeke. Pa mavavu a tsinde, kumbukirani momwe tsinde lilili lotseguka komanso lotsekedwa mokwanira, kupewa kugunda pomwe pali tsinde lotseguka. Ndipo ndizosavuta kuyang'ana ngati zili zachilendo mukatsekedwa kwathunthu. Ngati valavu ikugwa, kapena pakati pa chisindikizo cha spool pali zinyalala zazikulu, malo a tsinde adzasintha atatsekedwa kwathunthu.
Pamene payipi ikugwiritsidwa ntchito koyamba, pali dothi lamkati lamkati, valavu imatha kutsegulidwa pang'ono, kuthamanga kwapamwamba kwa sing'anga kungagwiritsidwe ntchito kutsuka, ndiyeno kutsekedwa mofatsa (osati kutsekedwa mofulumira, kutsekedwa koopsa, kuteteza. zotsalira zotsalira kuchokera kumangiriza kusindikiza pamwamba), tsegulaninso, mobwerezabwereza kangapo, sambitsani litsiro, ndiyeno mugwiritse ntchito bwino. Nthawi zambiri mutsegule valve, pangakhale dothi pamtunda wosindikiza. Potseka, njira yomwe ili pamwambayi iyeneranso kugwiritsidwa ntchito kutsuka, ndikutseka mwalamulo. Ngati handwheel ndi chogwirira chawonongeka kapena kutayika, ziyenera kumalizidwa nthawi yomweyo, ndipo sizingasinthidwe ndi manja osunthika mbale, kuti zisawononge tsinde la quartet, kutsegula ndi kutseka sikothandiza, zomwe zimapangitsa kuti pakhale ngozi popanga.
Ena sing'anga, kuziziritsa pambuyo valavu kutsekedwa, kotero kuti valavu kufota, woyendetsa ayenera kutsekedwa kachiwiri pa nthawi yoyenera, kotero kuti kusindikiza pamwamba sasiya msoko wabwino, mwinamwake, sing'anga kuchokera ku msoko wabwino kwambiri- liwiro kuthamanga, n'zosavuta kutsuka kusindikiza pamwamba. Panthawi yogwira ntchito, ngati zikuwoneka kuti ntchitoyi ndi yovuta kwambiri, chifukwa chake chiyenera kufufuzidwa. Ngati kulongedza kuli kolimba kwambiri, kumatha kumasuka bwino, monga valve stem skew, iyenera kudziwitsa ogwira ntchito kuti akonze. Ma valve ena, m'malo otsekedwa, zigawo zotsekedwa zimatenthedwa, zomwe zimabweretsa mavuto otsegula; Ngati ayenera anatsegula pa nthawi ino, chivundikirocho akhoza unscrew theka bwalo kuti bwalo kuthetsa tsinde nkhawa, ndiyeno mbale kuyamba gudumu.
(2) Zinthu zofunika kuziganizira
1, 200 ℃ pamwamba pa valavu yotentha kwambiri, chifukwa cha kuyika kwa firiji, ndipo mutatha kugwiritsa ntchito bwino, kutentha kwa kutentha, kuwonjezeka kwa kutentha kwa bolt, kuwonjezeka kwa kusiyana, kotero kuyenera kumangitsa kachiwiri, kotchedwa "hot tight", ogwira ntchito ayenera kumvetsera izi. ntchito, mwinamwake sachedwa kutayikira.
2. Pamene nyengo ikuzizira, valavu yamadzi iyenera kutsekedwa kwa nthawi yaitali, ndipo madzi ayenera kuchotsedwa pambuyo pa valve. Nthunzi valavu pambuyo nthunzi, komanso amafuna kusaganizira condensate. Pansi pa valve ndi silky ndipo imatha kutsegulidwa kuti ikhetse.
3, mavavu osakhala achitsulo, ena olimba komanso osasunthika, ena otsika mphamvu, opareshoni, otseguka ndi otseka mwamphamvu sangakhale aakulu kwambiri, makamaka sangathe kupanga mphamvu yamphamvu. Komanso samalani kuti musagwetse zinthu.
4, pamene valavu yatsopano ikugwiritsidwa ntchito, kulongedza sikuyenera kukanikizidwa mwamphamvu kwambiri, kuti zisawonongeke, kuti musamangirire tsinde kwambiri, kufulumizitsa kuvala, ndizovuta kutsegula ndi kutseka.
Valve pressure test test leakge test
Kuyeza kupanikizika kumatanthauza kuyesa mphamvu za thupi. Kuyezetsa kutayikira, kumatanthauza kuyesa kulimba kwapamwamba, mayeso awiriwa ndikuwunika momwe ma valve amagwirira ntchito. Sing'anga yoyesera nthawi zambiri imakhala madzi otentha, ndipo palafini amatha kugwiritsidwa ntchito ngati mavavu ofunikira. Ma valve otetezeka nthawi zonse amayesa kuthamanga, amatha kugwiritsa ntchito mpweya wokhazikika wa nayitrogeni, komanso amatha kugwiritsa ntchito nthunzi kapena mpweya m'malo mwake. Pa ma valve a diaphragm, yesani ndi mpweya.
(1) kuyesa kukakamiza
Vavu mphamvu mayeso kuthamanga, ndi kuthamanga mwadzina ali ndi ubale zotsatirazi
Kuthamanga mwadzina (Mpa) mphamvu yoyesera mphamvu (Mpa0.10.20.250.40.40.60.60.911.51.62.42.53.8466.49.610151624203025383248 ndi zowoneka, kuthamanga kwadzina kochokera ku 0.24 Mpa kuthamanga kwa 0.24 Mpa - 3 Mpa kuthamanga kwa 0.24 Mpa). Nthawi zoyesera zosindikizira za valve, zofanana ndi kukakamiza mwadzina.
(2) Njira zoyesera
Kuyesedwa kwa kuthamanga ndi kutayikira kumachitika pa benchi yoyesera. Kapangidwe ka benchi yoyesera (monga momwe tawonetsera pa Chithunzi 5-1) ndikuti pali gawo lokakamiza pamwamba pa benchi yoyesera ndi payipi yolumikizidwa ndi mpope woyesa kukakamiza pansipa. Vavu ikakanikizidwa, pampu yoyeserera imagwira ntchito. Kuchokera muyeso wa kuthamanga kwa pampu yoyesa kuthamanga, valavu imatha kuwerengedwa kuchuluka kwa kuthamanga. Pamene valavu yoyezetsa kuthamanga ikudzaza ndi madzi, mpweya wa valve uyenera kutsekedwa. Pulati yoponderezedwa yomwe ili pamwamba pa benchi yoyesera imakhala ndi dzenje lotulutsa mpweya ndipo imatsegulidwa ndi kutsekedwa ndi valve yaing'ono. Chizindikiro chosonyeza kuti mpweya wachotsedwa ndi chakuti madzi onse amatuluka mu mpweya. Pambuyo potseka mpweyawo, yambani kukulitsa mphamvu. Njira yowonjezera iyenera kukhala yocheperako, osati yakuthwa. Pambuyo pofika kukakamizidwa komweko, sungani kwa mphindi zitatu, kupanikizika sikukhala koyenerera.
Njira yoyezetsa kuthamanga kwa magazi imatha kugawidwa m'magawo atatu:
1, tsegulani njira ya valavu, lembani valavu ndi madzi (kapena palafini), ndipo onjezerani kukakamizidwa kuti muyesere mphamvu, yang'anani thupi la valve, chivundikiro cha valve, gasket, kulongedza kwa kutuluka.
2, kutseka msewu wa valve, kukakamiza mbali imodzi ya valve ku mphamvu yadzina, fufuzani ngati pali kutuluka kumbali inayo.
3. Tembenuzani valavu mozondoka ndikuyesa mbali inayo.
Ma valve omwe amagawana nawo gawo lopanga ma valve ochulukirapo kuposa chiyani?
Anzanu ambiri asokonezeka kuposa sadziwa zomwe opanga kuti apeze mavavu, mtundu wanji, kumene khalidwe liri bwino, anthu ena adanena Shanghai, anthu ena adanena Zhejiang, anthu ena adanena kuti Jiangsu, xiaobian mu galimoto iyi yolemekezeka.
Mavavu ndi osiyanasiyana ndipo pali mitundu yodziwika bwino ya mavavu opitilira 8,000, ndipo imodzi 5 ilibe ziwerengero, ili ndi zambiri zopangidwa mwapadera kubizinesi, yokhala ndi zambiri zopangidwira ntchito inayake, osati * * * yogwiritsidwa ntchito ndi msika, koma gawo laling'ono limathetsedwa, nthawi zonse kunena zambiri, ndi chisokonezo, molunjika mpaka ife, Zomwe zili pansipa ndi ngodya chabe, ziwerengero za tsitsi la ng'ombe, mwatsatanetsatane kapena kumunda, ntchito zabwino. (magawo atsatanetsatane amitundu ndi mitundu yazigawo chonde tcherani khutu ku nkhani yotsatirayi). Pansipa tidzasanthula opanga akuluakulu ozungulira gulu la valve ndi gawo la msika la kufotokozera, deta imachokera ku ziwerengero za National Bureau of Statistics (opanga omwe ali ndi zilolezo zopanga, chiwerengero cha malonda ndi zotsatira za msonkho wapachaka).
Magawo amsika a valve:
Chiwerengero: 53%
1. Oubei Town, Yongjia County, Wenzhou: 23% (mavavu wamba, mavavu kuponyedwa zitsulo, mavavu American muyezo, etc.)
2, Wenzhou Longwan District: 15% (mavavu otsika-mapeto, mavavu zitsulo zosapanga dzimbiri, etc.)
Chigawo cha Yuhuan: 6% (mavavu amkuwa, etc.)
Ningbo: 2.5% (mavavu apulasitiki, mavavu amkuwa, etc.)
Lishui: 2% (mavavu achitsulo, mavavu aku America, etc.)
Hangzhou: 1.5% (valavu yowongolera, etc.)
Yueqing: 0.5% (Mavavu am'madzi, ndi zina zotero)
Zhuji City: 0.5% (mavavu amkuwa, zida zamoto, etc.)
Yuyao: 0.5% (valenoid valve)
1% Yotsala (Ruian, Tongxiang, Taizhou)
Yancheng City, Province la Jiangsu: 12.5% ​​(valavu yolumikizana, valavu ya zida, valavu ya hydraulic, valavu yothamanga kwambiri, etc.)
Shanghai: 7% (mavavu otumizidwa kunja, ** mavavu, mavavu opangira magetsi, mavavu owongolera okha, etc.)
Tianjin: 5% (valavu yotsika, valavu yagulugufe yofewa, etc.)
Chigawo cha Guangdong: 4% (mavavu ophatikizana, etc.)
Chigawo cha Fujian: 2.5% (ma valve ductile iron, mavavu amoto, mavavu amadzi, etc.)
Henan City: 2% (mavavu otsika kwambiri, chitsulo choponyedwa, ma ductile iron valves, etc.)
Beijing: 2% (mavavu apamwamba, etc.)
Zigong, chigawo cha Sichuan: 1% (mavavu othamanga kwambiri, mavavu opangira magetsi, etc.)
Chigawo cha Shandong: 1% (mavavu a groove, mavavu amoto, etc.)
Chigawo cha Hebei: 1% (chitsulo choponyedwa, ma valve ductile iron, etc.)
Mzinda wa Chongqing: 0.5% (valenoid valve, etc.)
Zotsatira: 9%
Ziwerengero zomwe zili pamwambapa zimagawidwa malinga ndi kuchuluka kwa mabizinesi, malonda, ndi kuchuluka kwazinthu. Ngati pali kupatuka kulikonse, chonde onetsani zomwe zikuchitika.