Kawirikawiri, kuyesedwa kwa mphamvu sikumachitidwa pamene valavu ya mafakitale ikugwiritsidwa ntchito, koma kuyesa mphamvu kuyenera kuchitidwa pambuyo poti thupi la valve ndi chivundikiro cha valve chikukonzedwa kapena kuwononga.Kwa valavu yotetezera, kupanikizika kwake kosalekeza ndi kubwereranso ndi mayesero ena ayenera kukhala mogwirizana ndi malangizo ake ndi malamulo oyenera.Kuyesa kwamphamvu kwa ma valve ndi kuyesa kusindikiza valavu kuyenera kuchitidwa pa benchi yoyesa ma valve hydraulic musanayike ma valve.Otsika kuthamanga vavu malo fufuzani 20%, ngati wosayenerera ayenera 100% anayendera;mavavu apakatikati ndi apamwamba ayenera kuyang'aniridwa 100%.Njira zomwe zimagwiritsidwa ntchito poyesa kuthamanga kwa ma valve ndi madzi, mafuta, mpweya, nthunzi, nayitrogeni, ndi zina zotero. Njira zoyezera kuthamanga kwa mavavu osiyanasiyana a mafakitale okhala ndi mavavu a pneumatic ndi motere:
1. Njira yoyesera yamagetsi ya globe valve ndi valve throttle
Mu mayeso a mphamvuvalavu ya globendi valve throttle, valavu yosonkhanitsidwa nthawi zambiri imayikidwa muzitsulo zoyesera, valavu ya valve imatsegulidwa, sing'anga imayikidwa pamtengo wotchulidwa, ndikuwona ngati thupi la valve ndi chivundikiro cha valve thukuta ndi kutuluka.Mayeso amphamvu amathanso kuchitidwa pa chidutswa chimodzi.Kuyesa kusindikiza ndi kwavalavu ya globe.Pa mayeso, tsinde lavalavu ya globeili pamtunda, diski imatsegulidwa, ndipo sing'anga imayambitsidwa kuchokera pansi pa diski kupita ku mtengo wotchulidwa, ndipo kulongedza ndi gasket kumafufuzidwa.Mukatha oyenerera, tsegulani diski ya valve ndikutsegula mapeto ena kuti muwone ngati pali kutayikira.Ngati mphamvu zonse za valve ndi kuyesa kusindikiza ziyenera kuchitidwa, mukhoza kuyesa kuyesa mphamvu, ndiyeno mutsike ku mayeso osindikiza mtengo, fufuzani kulongedza. ndi gasket;kenaka mutseke diski ndikutsegula chotulukapo kuti muwone ngati malo osindikizira akuwotcha.Ngati mphamvu ya valve ndi kuyesa kolimba ziyenera kuchitidwa, mukhoza kuyesa mphamvu poyamba, ndiyeno muchepetse kupanikizika kwa mtengo woyesera, fufuzani kulongedza ndi gasket;Kenako tsekani chimbale, tsegulani chotulukapo kuti muwone ngati kutayikira kwapamtunda kosindikiza.
2. Njira yoyesera yokakamiza ya valve yachipata
Mayeso a mphamvuvalve pachipatandi chofanana ndi chavalavu ya globe.Pali njira ziwiri zoyesera kulimba kwama valve pachipata.
(1) Chipata chimatseguka, kotero kuti kupanikizika mkati mwa valve kumakwera mtengo wotchulidwa;Ndiye kutseka chipata, nthawi yomweyo tulutsanivalve pachipata, yang'anani ngati pali kutuluka mu chisindikizo kumbali zonse ziwiri za chipata kapena kulowetsa mwachindunji njira yoyesera mu pulagi pa chivundikiro cha valve ku mtengo wotchulidwa, fufuzani chisindikizo kumbali zonse za chipata.Njira yomwe ili pamwambayi imatchedwa kuyesa kwapakati papakati.Njira imeneyi si yabwino kwa chisindikizo mayeso ama valve pachipatandi m'mimba mwake mwadzina DN32mm pansipa.
(2) Njira ina ndikutsegula chipata, kotero kuti kuthamanga kwa valve kuyesa ku mtengo wotchulidwa;Ndiye kutseka chipata, kutsegula mbali imodzi ya mbale akhungu, fufuzani ngati kusindikiza pamwamba kutayikira.Kenako bwererani, bwerezani mayeso omwe ali pamwambapa mpaka mutayenerera.
Mayeso olimba pakunyamula ndi gasket ya pneumaticvalve pachipatazidzachitidwa pamaso pa tightness mayeso avalve pachipata.
3. Njira yoyesera kuthamanga kwa valve ya mpira
Mpweyavalavu ya mpiramphamvu mayeso ayenera kukhala mu mpira wavalavu ya mpiratheka lotseguka boma.
(1) Kusindikiza mayeso avalavu ya mpira woyandama: Valavu ili mu gawo lotseguka, mapeto amodzi amalowetsedwa muzitsulo zoyesera, ndipo mapeto ena amatsekedwa.Tembenuzani mpirawo kangapo, tsegulani mapeto otsekedwa pamene valavu yatsekedwa, ndipo yang'anani ntchito yosindikiza ya filler ndi gasket nthawi imodzi, ndipo pasakhale kutayikira.Ndiye sing'anga yoyesera imayambitsidwa kuchokera kumapeto kwina kubwereza mayeso omwe ali pamwambapa.
(2) Mayeso osindikizira avalve yokhazikika ya mpira: Mpira umazunguliridwa kangapo popanda katundu musanayesedwe, ndivalve yokhazikika ya mpirachatsekedwa, ndipo sing'anga yoyesera imayambitsidwa kuchokera kumapeto mpaka ku mtengo wotchulidwa;chopimira chopimira chimagwiritsidwa ntchito poyang'ana momwe kusindikizira kolowera kumapeto.Kulondola kwa mphamvu yamagetsi ndi giredi 0.5-1, ndipo mitunduyi ndi nthawi 1.6 ya kukakamizidwa kwa mayeso.Pakadutsa nthawi yodziwika, palibe chodabwitsa chotsika chomwe chikuyenera;ndiye njira yoyesera imayambitsidwa kuchokera kumapeto kwina kubwereza mayeso omwe ali pamwambapa.Ndiye, valavu ili mu semi-lotseguka, mapeto onse atsekedwa, mkati mwa mkati mwadzaza ndi sing'anga, ndipo filler ndi gasket amafufuzidwa pansi pa kukakamizidwa mayeso popanda kutayikira.
(3) Vavu yanjira zitatu iyenera kukhala pamalo aliwonse poyesa kusindikiza.
4. Njira yoyesera ya plug valve
(1) Pamene kuyesa mphamvu ya valavu ya pulagi ikuchitika, sing'anga imayambitsidwa kuchokera kumapeto, ndipo njira zina zimatsekedwa.Pulagi imazunguliridwa kumalo aliwonse ogwirira ntchito potsegula kwathunthu kuti ayesedwe.Ndipo palibe kutayikira komwe kumapezeka mu thupi la valve.
(2) Poyesa kusindikiza, tambala wowongoka amayenera kusunga kupanikizika kwapabowo kofanana ndi komwe kuli panjira, kutembenuza pulagi kumalo otsekedwa, kuyang'ana kuchokera kumbali ina, ndiyeno kutembenuza pulagi ndi 180 ° kuti. bwerezani mayeso omwe ali pamwambapa.Valavu ya pulagi yanjira zitatu kapena zinayi iyenera kusunga kupanikizika m'chipindacho mofanana ndi kumapeto kwa njira, ndipo pulagi iyenera kuzunguliridwa kumalo otsekedwa motsatira.Kupanikizika kuyenera kuyambitsidwa kuchokera kumapeto kwa ngodya yoyenera ndikufufuzidwa kuchokera kumapeto kwina nthawi yomweyo.
Pamaso pa benchi yoyeserera ya pulagi valavu, amaloledwa kugwiritsa ntchito wosanjikiza wa mafuta opaka mafuta osakhala ndi asidi pamadzi osindikizira, ndipo palibe kutayikira ndi kukulitsa madontho amadzi omwe amapezeka mkati mwa nthawi yodziwika.Nthawi yoyeserera ya plug valve imatha kukhala yayifupi, nthawi zambiri malinga ndi m'mimba mwake mwadzina la l ~ 3min.
Vavu ya pulagi ya gasi wa malasha iyenera kuyesedwa kuti ikhale yolimba kwambiri pamlingo wa 1.25 nthawi yogwira ntchito.
5. Njira yoyezera kupanikizika kwa valve ya butterfly
Mayeso a mphamvuvalavu ya butterfly ya pneumaticndi chofanana ndi chavalavu ya globe.Mayeso osindikiza osindikiza avalavu ya butterflyAdziwitse sing'anga yoyesera kuchokera kumapeto kwapakati, mbale yagulugufe iyenera kutsegulidwa, mbali inayo iyenera kutsekedwa, ndipo kuthamanga kwa jekeseni kuyenera kufika pamtengo womwe watchulidwa.Pambuyo poyang'ana kulongedza ndi kusindikiza kwina kwina, kutseka mbale yagulugufe, kutsegula mapeto ena, Ndikoyenera kufufuza kuti palibe kutayikira mu chisindikizo cha gulugufe.Valve ya butterflychifukwa zowongolera otaya sangathe kuchita kusindikiza ntchito mayeso.
6. Njira yoyesera kupanikizika kwa valve diaphragm
Thevalve ya diaphragmkuyesa mphamvu kumayambitsa sing'anga kuchokera kumapeto kulikonse, kumatsegula chimbale, ndipo mapeto ena amatsekedwa.Pambuyo pa kukakamizidwa kwa mayeso kukwera ku mtengo wotchulidwa, ndi woyenerera kuti awone kuti thupi la valve ndi chivundikiro cha valve sichikutuluka.Kenako chepetsani kukakamiza kwa mayeso osindikiza, kutseka chimbale, tsegulani mbali ina kuti muwunikenso, palibe kutayikira komwe kuli koyenera.
7. Njira yoyesera yokakamiza ya valve yowunika
Onani valavumayeso: kwezani valavu valavu chimbale axis mu malo perpendicular yopingasa;mayendedwe a Channel ndi disc axis avalavu yoyenderapafupifupi kufanana ndi mzere wopingasa.
Mu kuyesa mphamvu, sing'anga yoyesera imayambitsidwa kuchokera kumapeto kwa cholowera kupita ku mtengo wotchulidwa, ndipo mapeto ena amatsekedwa.Ndikoyenera kuwona kuti thupi la valve ndi chivundikiro cha valve sichikutuluka.
Mayeso osindikizira amayambitsa njira yoyesera kuchokera kumapeto, ndikuyang'ana malo osindikizira pamapeto pake.Palibe kutayikira pa filler ndi gasket ndikoyenera.
8. Njira yoyesera yamagetsi ya valve yotetezera
(1) Mayesero amphamvu a valve yotetezera ndi ofanana ndi ma valve ena, omwe amayesedwa ndi madzi.Poyesa gawo lapansi la thupi la valve, kupanikizika kumayambitsidwa kuchokera ku inlet I = I kutha, ndipo malo osindikizira amatsekedwa;Poyesa kumtunda kwa thupi ndi bonnet, kupanikizika kumayambitsidwa kuchokera kumapeto kwa El ndipo mapeto ena amatsekedwa.Thupi la valve ndi bonnet ziyenera kukhala zoyenerera popanda kutayikira mkati mwa nthawi yotchulidwa.
(2) Kuyesa kolimba komanso kuyesa kupanikizika kosalekeza, sing'anga yomwe imagwiritsidwa ntchito ndi: valavu yotetezera nthunzi yokhala ndi nthunzi yodzaza ngati njira yoyesera;Ammonia kapena valavu ina ya gasi yokhala ndi mpweya ngati njira yoyesera;Vavu yamadzi ndi zakumwa zina zosawononga zimagwiritsa ntchito madzi ngati njira yoyesera.Pamalo ena ofunikira a valve yotetezera, nayitrogeni imagwiritsidwa ntchito ngati njira yoyesera.
Chisindikizo chosindikizira ndi mtengo wamtengo wapatali ngati chiyeso choyezetsa, chiwerengero cha nthawi sichochepera kawiri, mu nthawi yotchulidwa palibe kutayikira komwe kuli koyenerera.Pali njira ziwiri zodziwira kutayikira: imodzi ndiyo kusindikiza kugwirizana kwa valavu yotetezera, ndikuyika pepala la minofu ndi batala pa flange ya El, pepala la minofu likuphulika chifukwa cha kutayikira, osati kuphulika kwa oyenerera;Chachiwiri ndi kugwiritsa ntchito batala kuti asindikize mbale ya pulasitiki yopyapyala kapena mbale zina m'munsi mwa flange, kudzaza madzi kuti asindikize valavu ya valve, ndikuwonetsetsa kuti madzi sakuphulika.Nthawi zoyesera za kupanikizika kosalekeza ndi kubwereranso kwa valve yotetezera sizidzakhala zosachepera 3 nthawi.
9. Njira yoyezera kupanikizika kwa valve yochepetsera kuthamanga
(1) Mayesero amphamvu a valve yochepetsera mphamvu nthawi zambiri amasonkhanitsidwa pambuyo pa mayesero amodzi, kapena pambuyo pa msonkhano.Kutalika kwa kuyesa mphamvu: DN<50mm 1min;Dn65-150mm kutalika kuposa 2min;DN> 150mm inali yayitali kuposa 3 min.
Pambuyo pa mvuto ndi zigawo zake zimawotchedwa, nthawi 1.5 zothamanga kwambiri pambuyo pogwiritsira ntchito valve yochepetsera mphamvu, ndipo kuyesa mphamvu kumachitika ndi mpweya.
(2) Kuyesa kolimba kumachitika molingana ndi sing'anga yeniyeni yogwirira ntchito.Poyesa ndi mpweya kapena madzi, mayeserowo adzachitidwa pa nthawi ya 1.1 ya mphamvu yadzina;Kuyesa kwa nthunzi kudzachitika pamlingo wovomerezeka wovomerezeka pa kutentha kwa ntchito.Kusiyana pakati pa kukakamiza kolowera ndi kutulutsa kotulutsa sikuyenera kukhala kochepera 0.2MPa.Njira yoyesera ndi: pambuyo pa kulowetsedwa kwa inlet, chowongolera chowongolera cha valavu chimasinthidwa pang'onopang'ono, kotero kuti kuthamanga kwa kutuluka kungasinthe mosalekeza komanso mosalekeza mkati mwa chiwerengero chapamwamba komanso chochepa, ndipo sipadzakhalanso kuima ndi kutsekereza zochitika.Kwa valavu yochepetsera nthunzi, pamene chitseko cholowera chikuchotsedwa, tsekani valavu yodulidwa kumbuyo kwa valve, ndipo kuthamanga kwa kutuluka ndipamwamba kwambiri komanso mtengo wotsika kwambiri.Mkati mwa 2min, kuyamikiridwa kwa kutulutsa kotulutsa kuyenera kukwaniritsa zofunikira.Panthawi imodzimodziyo, voliyumu ya payipi kumbuyo kwa valve imakhala yoyenerera mogwirizana ndi zofunikira.Kwa ma valve ochepetsera madzi ndi mpweya, mphamvu yolowera ikakhazikitsidwa ndipo kutulutsa kotulutsa ndi zero, valavu yochepetsera imatsekedwa kuyesa kusindikiza.Ndi oyenerera ngati palibe kutayikira mkati 2 mphindi.
Nthawi yotumiza: Feb-08-2023