Kuwunika kwa miyezo ya 16 ndi mavuto omwe amayenera kutsatiridwa mu mayeso a valve hydrostatic

Kusanthula kwa miyezo ya 16 ndi mavuto omwe amayenera kutsatiridwa mu kuyesa kwa valve hydrostatic Kupanga ma valve ndi njira yovuta komanso yosavuta. Kuzungulira kwa ma valve monga ma valve a globe, ma valve ndi ma disc ma valve nthawi zambiri amakhala masiku atatu. Mavavu ayenera kuyesedwa pamitundu yonse ya mawonekedwe. Kuyesedwa kwa kuthamanga ndi sichuan valavu imatha kupirira kupanikizika sikukwaniritsa zofunikira pakupanga ndi kupanga, kuyesa kwamphamvu kwamadzi kwamadzi kuyenera kutsatira izi ndi zovuta zomwe wamba: (1) Nthawi zonse, valavu simapangidwira kuyesa mphamvu, koma pambuyo kukonza mbale wozungulira mafuta ndi valavu imodzi otaya kapena mbale mafuta dera ndi valavu otaya limodzi kuonongeka ndi kukokoloka ayenera kukhala compressive mphamvu mayeso. Kwa ma valve, yunifolomu ndi kukakamiza kubwerera ndi mayesero ena ayenera kugwirizana ndi zofunikira za malangizo awo ogwiritsira ntchito ndi zina zokhudzana nazo. (2) Gulu la valve liyenera kuyesedwa kuti likhale lamphamvu komanso kusindikiza. Low voteji vavu zitsanzo kuyendera 20%, monga osayenera ayenera 100% anayendera; Ma valve apakati ndi apamwamba ayenera kuyang'aniridwa 100%. (3) Pakuyesa, gawo la msonkhano wa valve liyenera kukhala losavuta kwambiri kuti likwaniritse malo oyendera. (4) valavu yamtundu wolumikizira magetsi, pomwe kuyeserera kwamadzi kwa mbale ya huang sikuli bwino, kusindikiza koloko kapena kusindikiza kwa O-ring kungagwiritsidwe ntchito poyesa kuthamanga kwa madzi. (5) Pamene kuyesa kwa hydraulic press, mpweya wa valve udzachotsedwa momwe zingathere. (6) Kupanikizika kuyenera kuwonjezeka pang'onopang'ono panthawi ya mayesero, ndipo sikuloledwa kuonjezera kuthamanga kwambiri komanso mwadzidzidzi. (7) Kuyesa kwamphamvu kwamphamvu ndi kusindikiza kwa mtundu wosindikiza nthawi zambiri kumakhala 2 - 3min, makiyi ndi valavu yapadera iyenera kupitilira kwa 5min. Nthawi yoyesera ya ma valve ang'onoang'ono ang'onoang'ono akhoza kukhala afupikitsa, ndipo nthawi yoyesera ya ma valve akuluakulu amatha kukhala yaitali. Panthawi yonse ya mayesero, ngati pali kukayikira kulikonse, nthawi yoyesera ikhoza kuwonjezeredwa. Panthawi yoyezetsa mphamvu yamphamvu, mbale yozungulira mafuta ndi valavu imodzi yokhayo siziloledwa kutuluka thukuta kapena kutayikira. Kuyesa kusindikiza, valavu yonse imatsirizidwa kamodzi, ma valve, ma valve othamanga kwambiri ndi ma valve ena aiwisi ayenera kuchita 2 nthawi. Pamene mayeso, otsika voteji, lalikulu m'mimba mwake wa valavu zosafunika ndi zofunika kulola valavu kutayikira madzi, kulola pang'ono madzi seepage; Chifukwa malamulo a ma valve ambiri, ma valve opangira magetsi, ma valve a Marine ndi ma valve ena ndi osiyana, malamulo othawirako ayenera kutsatiridwa malinga ndi zofunikira. (8) Valavu yanjira imodzi simatsekeka mbali zoyeserera kusindikiza, koma kuyesa kwamphamvu kwapang'onopang'ono ndi kunyamula zinthu ndi kuyesa kusindikiza gasket. (9) Mu mayeso a hydrostatic, mphamvu yotseka ya valve imangolola mphamvu yachibadwa ya munthu kutseka; Osadalira zida zapadera monga mipiringidzo (kupatula ma wrenches a torque) kuti muzitha kuyamwa modzidzimutsa, pomwe kabowo ka spindle kamadutsa mpaka 320mm, lolani anthu awiri kuzimitsa. (10) valavu yokhala ndi chisindikizo chapamwamba iyenera kuchotsedwa pazitsulo zodzaza kuti ziyesedwe kusindikiza, woyang'anira osindikiza atsekedwa, fufuzani ngati ikutha. Mukamagwiritsa ntchito steam body poyesa, lembani madzi mubokosi losaphulika kuti muwunike. Poyesa kusindikiza zinthu zodzaza, kusindikiza sikuloledwa m'malo oyandikira. (11) Vavu iliyonse yokhala ndi zida zokankhira, yesani kusindikiza kwake pogwiritsa ntchito zida zokankhira kuti mutseke valavu kuti muyese kusindikiza. Pamene mdani akusuntha kukankhira zipangizo, kuyesa kusindikiza kwa valve kuyeneranso kuchitidwa. (12) kuyesa kwamphamvu kwamphamvu ndi kuyesa kusindikiza kumayikidwa pa valavu yolowera ya valve yogawa, ndipo kuyeserera kwamphamvu ndi kusindikiza kumachitika mu valavu yogawa; Pamene valve yogawa imatsegulidwa, iyeneranso kutsegulidwa. (13) Pamene valavu ya nkhumba ikuyesa mphamvu, gwiritsani ntchito nyundo yamkuwa kuti mugwire mbale yozungulira mafuta ndi valavu imodzi yothamanga, fufuzani ngati madzi akutha. (14) kuyesa valavu, kuwonjezera pa valavu pulagi chofunika kulola mafuta pamwamba, mavavu ena saloledwa kuyesa mafuta pamwamba. (15) valve hydraulic test, valve flange pa valve clamping force si yoyenera kwambiri, pofuna kuteteza kusinthika kwa valve, kuvulaza zotsatira zenizeni za mayesero (valavu yachitsulo ya nkhumba ngati ikanikizidwa kwambiri, idzapitiriza kuwonongeka) . (16) Pambuyo pomaliza kuyesa kwa hydraulic kwa valve, madzi otsekemera mu valve ayenera kutsukidwa mwamsanga, ndipo zolemba zoyesedwa ziyenera kupangidwa. Valve hydrostatic test ndiyo kuyang'anitsitsa kuyenera kuchitika musanachoke ku fakitale, yomwe ingatsimikizire kuti valve ikugwira ntchito yodalirika. Apa akuti opanga ma valve opanga hydrostatic test ndodo kuti asunge chitetezo chawo, m'zaka zaposachedwa, ngozi zachitetezo cha valve hydrostatic test, ziyenera kulabadira. Pneumatic butterfly valve diaphragm valve compressive mphamvu yoyesera kuchokera kumapeto konse kwa kuyambika kwa zinthu, sing'anga kuti mutsegule valavu ya pisitoni, mbali ina yotseka, kukakamiza kwa mayeso kunakwera mpaka pamtengo wokhazikika, onani mbale yamafuta ndi valavu imodzi yotuluka popanda kutayikira. woyenerera. Kenako tsitsani kuthamanga kwa magazi ku kuthamanga kwa mayeso osindikiza, kutseka valavu ya pistoni, tsegulani mbali ina kuti muyang'ane, palibe kutayikira komwe kumayenera. Yang'anani mawonekedwe a mayeso a valve: kusintha Pneumatic butterfly valve Diaphragm valve compressive test test kuchokera kumapeto kwa kuyambika kwa zinthu, sing'anga kuti mutsegule valavu ya pisitoni, mapeto ena otsekedwa, kupanikizika kwa mayesero kunakwera kufika pamtengo wokhazikika, onani mbale yamafuta ndi valavu otaya limodzi palibe kutayikira kwa oyenerera. Kenako tsitsani kuthamanga kwa magazi ku kuthamanga kwa mayeso osindikiza, kutseka valavu ya pistoni, tsegulani mbali ina kuti muyang'ane, palibe kutayikira komwe kumayenera. Yang'anani valavu Yang'anani mayeso a valve: kukweza mtundu wa valve piston valve center line ili mu gawo loyima; Swing check valve security channel centerline ndi piston valve centerline zili mofanana ndi mzere wowongoka. Mayeso amphamvu oponderezedwa, kuyambira polowera kumapeto kwa kuyambika kwa zinthu zoyeserera mpaka pamtengo wokhazikika, malekezero ena otsekedwa, onani mbale yamafuta ozungulira ndi valavu imodzi yotaya palibe kutayikira kwa oyenerera. Kusindikiza kusindikiza kuchokera kumapeto kwa kuyambika kwa zinthu zoyeserera, polowera kumapeto kwa malo oyendera, kudzaza zinthu ndi gasket palibe kutayikira kwa oyenerera. Vavu Mphamvu yopondereza ya valve yothandizira imayesedwa ndi madzi apampopi, monganso ma valve ena. Poyesa pansi pa mbale yozungulira mafuta, kupanikizika kumayambitsidwa kuchokera kumapeto kwa cholowera, ndipo pamwamba patsekedwa; Poyesa kumtunda kwa bolodi la dera la mafuta ndi valve imodzi yothamanga, kupanikizika kumayambitsidwa kuchokera kumapeto, ndipo mapeto ena amatsekedwa. Palibe kutayikira kwa bolodi loyendera mafuta ndi valavu imodzi yoyenda munthawi yofunikira ndiyoyenera. Kusindikiza mayeso ndi yunifolomu mayeso, ntchito ambiri zakuthupi: valavu nthunzi kuti superheated nthunzi monga zinthu mayeso; Ammonia kapena valavu ina ya nthunzi yokhala ndi mpweya ngati zinthu zoyesera; Madzi ndi mavavu ena osawononga amadzimadzi kuti amwe ngati zinthu zoyesera. Pazigawo zina zazikulu za valavu wamba wa hydrogen ngati zinthu zoyeserera. Mayeso osindikizira amachitika ndi kukakamiza kwachulukidwe kwa chiwerengero cha chiwerengero, mafupipafupi omwe si osachepera 2 nthawi, palibe kutayikira mu nthawi yofunikira yomwe imayenera. Pali njira ziwiri zowonera kutayikira: imodzi ndikusindikiza ma valve olowa, ndi batala wosasungunuka kuti asindikize chopukutira cha pulasitiki pa flange yotumiza kunja, pepala la pulasitiki lotayirira, osati lotukuka kwa oyenerera; Chachiwiri ndi ntchito unsalted batala kuti woonda pulasitiki mbale kapena mbale kusindikiza chopukutira mu flannel katundu m'munsimu, kusindikiza pisitoni valavu jekeseni madzi, kudziwika thovu m'madzi ndi woyenerera. Vavu yunifolomu ndi kumbuyo mpando kuthamanga mayeso pafupipafupi si zosakwana 3 zina, kukwaniritsa zofunika oyenerera. Valavu yowongolera kuthamanga Kuyesa kwamphamvu kwa valve yochepetsera kupanikizika kumasonkhanitsidwa pambuyo poyesedwa kwa magawo, komanso pambuyo poyesa kusonkhana. Kutalika kwa mayeso amphamvu: DN50mm kwa 1min; DN65 ~ 150mm kuposa 2min; DN150mm kwa mphindi zoposa 3. Pambuyo kuwotcherera zitsulo zazitsulo ndi zigawo zake, kuyesa kwamphamvu kwamagetsi kumachitidwa ndi mpweya 1.5 kupitirira kuthamanga kwapamwamba kumbuyo kwa valve. Kuyesa kusindikiza kuyenera kuchitidwa molingana ndi zomwe zili mu ntchito yeniyeni. Mukamagwiritsa ntchito kuyesa kwa gasi kapena madzi, yesani nthawi 1.1 ya kuthamanga kwadzina; Mayesero a Steam amachitidwa pazovuta kwambiri zogwirira ntchito pa kutentha kwa ntchito. Kusiyana pakati pa kukakamiza kolowera ndi kutsika kwapanyumba sikuchepera 0.2mpa. Njira yoyesera ndiyo: pambuyo pa kuwongolera kwamphamvu kwa inlet, sinthani pang'onopang'ono phula losinthira ma valve, kuti kutulutsa kotulutsa mugulu lalikulu kwambiri komanso laling'ono lamtengo wapatali kumatha kukhala kosunthika, kusinthika mosalekeza, kulibe kuyimirira, kumamatira. Kwa valavu yochepetsera mphamvu ya nthunzi, mphamvu yolowera ikasinthidwa, kutseka valavu ndikuchotsa valavu, kuthamanga kwa mpweya kumakhala kokwera komanso kotsika kwambiri, mkati mwa mphindi 2, kuwonjezeka kwa mtengo wa kutulutsa mpweya kuyenera kukwaniritsa zofunikira. Table 6-22, panthawi imodzimodziyo, mphamvu ya chitoliro pambuyo pa valavu ikukwaniritsa zofunikira mu Table 6-23 ndiyoyenerera; Kwa valavu yochepetsera madzi ndi mpweya, pamene kulowetsedwa kwa inlet kulondola, kuthamanga kwa kutuluka ndi zero, kutseka valve yoyendetsera kuthamanga kuti muyese kusindikiza, palibe kutayikira mu 2min ndikoyenera. Njira yoyezetsa ndi kuyeserera kwathunthu kwa mawonekedwe ndikusintha kulowetsedwa ndi kutulutsa koyamba, sinthani 30% ya kutuluka kwathunthu kwa chotuluka pansi pa kupsinjika kwapanikizidwe apa, kapena kusintha 30% ya kukakamiza kolowera popanda kusuntha kutuluka konse, ndiye kuyeza kutulutsa kotulutsa molondola, ndipo mtengo wake wapang'ono ndi woyenerera mogwirizana ndi zofunikira mu Gulu 6-24. Msampha wa nthunzi Pali mitundu yambiri ya msampha wa nthunzi, ndipo pali zinthu zambiri zatsopano zoyeserera. Nthawi zambiri, kuyesa kwamphamvu kwamphamvu, kuyeserera kwamphamvu kwamphamvu ndi kuyesa kwamaimidwe kumagwiritsidwa ntchito. Mayesero a mphamvu ya compressive ndi ofanana ndi ma valve ena. Mayeso oponderezedwa ndikuyesa kukakamiza kwapampu yamadzi ndi magawo ena otsekedwa ndi kukakamiza kwa 1.2 kuchulukitsa m'mimba mwake mwadzina. Mayesowo ndikusintha kukhala nthunzi ndi madzi odzaza, ma frequency oyeserera ndi osachepera 3 nthawi. Kupanikizika kwa mayeso kumachitika pazifukwa zogwira ntchito kwambiri, kupanikizika kocheperako komanso kutsika kwambiri kogwira ntchito motsatana. Dexterity mu kaimidwe ndi kusowa nthunzi ali oyenerera. Kuyesa kwa postural ndi kusindikiza kwa msampha wa nthunzi nthawi zambiri kumachitika mu labotale. Msampha wa nthunzi kuphatikiza pakuyesa kukakamiza, kuyesa kwamphamvu kwamphamvu, kuyesa kukakamiza ndi kaimidwe kumakhala ndi kuyesa kotentha kwa condensate, digirii yoziziritsa kwambiri, yokulirapo imalola kuyesa kwamtundu wakumbuyo, kuyeserera kwa kutayikira, mpweya wotulutsa mpweya komanso kugwira ntchito kochepa. kupanikizika pamayesero, kuyezetsa kwakukulu kwa ntchito, ndi zina, kutengera momwe zilili.