1.Tanthauzo la valve yachipata
Ndi mtundu wa valve womwe umagwiritsidwa ntchito kwambiri pamapaipi. Zimagwira makamaka ntchito yolumikiza ndi kudula pakati. Sikoyenera kuwongolera kuthamanga kwa sing'anga, koma imatha kuweruza kuchuluka kwa mayendedwe malinga ndi kukwera ndi kugwa kwa tsinde (monga valavu yapampando yolimbana ndi moto yokhala ndi sikelo yotsegulira ndi kutseka). Poyerekeza ndi ma valve ena, ma valve a pakhomo ali ndi ntchito zambiri zogwiritsira ntchito kuthamanga, kutentha, caliber ndi zina zofunika.
2. Kapangidwe ka Valve Yachipata
Ma valve pachipata amatha kugawidwa mumtundu wa mphero, mtundu wa chipata chimodzi, mtundu wa chipata chotanuka, mtundu wa zipata ziwiri ndi mtundu wa chipata chofananira malinga ndi kapangidwe kawo ka mkati.
Malingana ndi kusiyana kwa chithandizo cha tsinde, chikhoza kugawidwa kukhala valavu yachipata chotseguka ndi valavu yachipata chakuda.
3. Vavu thupi ndi wothamanga
Mapangidwe a thupi la valve pachipata amatsimikizira kugwirizana pakati pa thupi la valve ndi payipi, thupi la valve ndi chivundikiro cha valve. Pankhani ya njira zopangira, pali kuponyera, kupangira, kupangira, kuponyera ndi kuwotcherera, ndi kuwotcherera mbale. Thupi la valavu lopanga lapanga kukhala lalikulu, pomwe thupi la ma valve oponya layamba kukhala laling'ono. Mtundu uliwonse wa ma valve a pachipata ukhoza kupangidwa kapena kuponyedwa, kutengera zofuna za wogwiritsa ntchito komanso njira zopangira zomwe wopanga amapanga.
Njira yodutsa ya thupi la valve ya pachipata imatha kugawidwa m'mitundu iwiri: mtundu wa mita imodzi ndi mtundu wochepetsedwa. Kuzungulira mwadzina kwa ndime yothamanga kumakhala kofanana ndi m'mimba mwake mwadzina la valavu, ndipo m'mimba mwake yaying'ono yodutsamo kuposa momwe ma valavu amatchulidwira amatchedwa mtundu wocheperako. Pali mitundu iwiri ya mawonekedwe a shrinkage: shrinkage yofanana ndi shrinkage yofanana. Njira ya tapered ndikuchepetsa m'mimba yopanda yunifolomu. Kutsekera kwa cholowera kumapeto kwa valavu yamtunduwu kumakhala kofanana ndi m'mimba mwake mwadzina, kenako kumachepetsa pang'onopang'ono pampando.
Ubwino wogwiritsa ntchito shrinkage wothamanga (kaya chubu conical osakhala yunifolomu shrinkage kapena yunifolomu shrinkage) ndi ofanana kukula valavu, amene angathe kuchepetsa chipata kukula, kutsegula ndi kutseka mphamvu ndi mphindi. Zoyipa zake ndikuti kukana kwamadzi kumawonjezeka, kutsika kwamphamvu komanso kugwiritsa ntchito mphamvu kumawonjezeka, choncho dzenje la shrinkage lisakhale lalikulu kwambiri. Pakuchepetsa kukula kwa chubu, chiŵerengero cha m'mimba mwake yamkati mwa mpando mpaka m'mimba mwake mwadzina nthawi zambiri ndi 0.8-0.95. Mavavu ochepetsera okhala ndi m'mimba mwake osakwana 250mm nthawi zambiri amakhala ndi mpando mkati mwake giya imodzi yotsika kuposa m'mimba mwake mwadzina; Mavavu ochepetsera okhala ndi m'mimba mwake wofanana kapena wokulirapo kuposa 300 mm nthawi zambiri amakhala ndi mpando mkati mwake magiya awiri otsika kuposa awiri mwadzina.
4. Kusuntha kwa ma valve a zipata
Pamene valve yachipata imatseka, malo osindikizira amatha kusindikizidwa kokha ndi kupanikizika kwapakati, ndiko kuti, kokha ndi kukakamiza kwapakatikati kuti akanikizire kusindikiza pamwamba pa chipata ku mpando kumbali ina kuti atsimikizire kusindikiza pamwamba, komwe ndi kudzisindikiza. Ma valve ambiri a zipata amakakamizika kusindikiza, ndiko kuti, pamene valavu imatseka, chipata chiyenera kukakamizika kukhala pampando ndi mphamvu yakunja kuti zitsimikizire kusindikiza pamwamba.
Njira yoyendetsera: Chipata cha valavu yachipata chimayenda molunjika ndi tsinde, chomwe chimadziwikanso kuti valavu yotseguka. Kawirikawiri pali ulusi wa trapezoidal pa ndodo yonyamulira. Kupyolera mu nati pamwamba pa valavu ndi groove yotsogolera pa thupi la valve, kayendetsedwe kake kamasintha kukhala kayendedwe ka mzere, ndiko kuti, torque yogwiritsira ntchito imasinthidwa kukhala yoyendetsa. Mukatsegula valavu, pamene chipata chokweza chipata chimakhala chofanana ndi 1: 1 nthawi ya valve m'mimba mwake, ndime yothamanga imatsegulidwa, koma pothamanga, malowa sangathe kuyang'aniridwa. Pogwiritsira ntchito, vertex ya tsinde la valve imagwiritsidwa ntchito ngati chizindikiro, ndiko kuti, malo a tsinde la valve omwe sakuyenda amagwiritsidwa ntchito ngati malo ake otseguka. Pofuna kuganizira za kutsekedwa kwa kusintha kwa kutentha, valavu nthawi zambiri imatsegulidwa ku malo a vertex ndikutembenuzidwa ku 1 / 2-1 kutembenuka ngati malo a valve yotseguka. Choncho, malo otseguka a valve amatsimikiziridwa ndi malo a chipata (ie sitiroko). Mtedza wa tsinde la valve pachipata amayikidwa pa mbale ya pachipata. Kuzungulira kwapamanja kumapangitsa kuti tsinde lizizungulira, zomwe zimakweza mbale ya pachipata. Vavu yamtunduwu imatchedwa rotary stem gate valve kapena valavu yachipata chakuda.
5. Ubwino wa magwiridwe antchito a mavavu a pachipata
1. Valve fluid kukana ndi yaying'ono, chifukwa thupi la valve lachipata ndilolunjika-kupyola, kuyenda kwapakati sikumasintha njira, kotero kukana koyenda kumakhala kochepa kusiyana ndi ma valve ena;
2. Kusindikiza ndikwabwino kuposa valavu ya globe, ndipo kutsegula ndi kutseka kumapulumutsa antchito kuposa vavu ya globe.
3. Ntchito zambiri, kuwonjezera pa nthunzi, mafuta ndi zofalitsa zina, komanso zoyenera kwa sing'anga yomwe ili ndi zolimba za granular ndi viscosity yapamwamba, yomwe imayenera kugwiritsidwanso ntchito ngati valve yotuluka ndi ma valve otsika a vacuum;
4. Valve yachipata ndi valve yokhala ndi maulendo awiri othamanga, omwe sali ochepa ndi kayendedwe kapakati. Chifukwa chake, valavu yachipata ndi yoyenera mapaipi pomwe sing'anga ingasinthe njira yolowera, komanso ndiyosavuta kuyiyika.
6. Zofooka za machitidwe a valve valve
1. Mapangidwe apamwamba kwambiri komanso nthawi yayitali yoyambira ndi yotseka. Mukatsegula, m'pofunika kukweza mbale ya valve kumtunda wa chipinda cha valve, ndipo potseka, m'pofunika kugwetsa mbale zonse za valve pampando wa valve, kotero kuti kutsegula ndi kutseka kwa valavu kumakhala kwakukulu. ndipo nthawi ndi yaitali.
2. Chifukwa cha kukangana pakati pa malo awiri osindikizira a mbale ya valve ndi mpando wa valve potsegula ndi kutseka, kusindikiza pamwamba kumakhala kosavuta kukwapula, komwe kumakhudza ntchito yosindikiza ndi moyo wautumiki, ndipo sikophweka. kusunga.
7. Kuyerekeza kwa magwiridwe antchito a ma valve a zipata okhala ndi mapangidwe osiyanasiyana
1. Wedge mtundu valavu imodzi pachipata
A. Kapangidwe kake ndi kosavuta kuposa valavu ya chipata chotanuka.
B. Pakutentha kwambiri, ntchito yosindikiza siili bwino ngati valve yotanuka pachipata kapena valavu iwiri.
C. Yoyenera kutentha kwa sing'anga yomwe imakhala yosavuta kuphika.
2. Vavu ya chipata chokoka
A. Ndi mtundu wapadera wa wedge mtundu umodzi chipata valavu. Poyerekeza ndi valavu ya chipata cha wedge, ntchito yosindikiza imakhala yabwino pa kutentha kwakukulu, ndipo chipata sichili chophweka kuti chitsekedwe chikatenthedwa.
B. Oyenera pa nthunzi, mafuta otentha kwambiri ndi mafuta ndi gasi media, komanso kusintha magawo pafupipafupi.
C. Sayenera kuphika sing'anga mosavuta.
3. Ma valve a zipata ziwiri
A. Kusindikiza kuli bwino kuposa valavu ya pachipata cha wedge. Pamene mbali yokhotakhota yosindikizira pamwamba ndi malo okwana mpando sizolondola kwambiri, imakhala ndi ntchito yabwino yosindikiza.
B. Pambuyo posindikiza pamwamba pa chipata chatha, chitsulo chachitsulo chomwe chili pansi pa pamwamba pa malo ozungulira chikhoza kusinthidwa ndikugwiritsidwa ntchito popanda kukwera ndi kupera pamwamba pa kusindikiza.
C. Yoyenera pa nthunzi, mafuta otentha kwambiri ndi mafuta ndi gasi, komanso kusinthasintha magawo pafupipafupi.
D. Siloyenera kuphika kosavuta.
4. Mavavu a zipata zofananira
A. Ntchito yosindikiza ndiyoyipa kwambiri kuposa ma valve ena a pachipata.
B. Yoyenera kwa sing'anga ndi kutentha kochepa komanso kupanikizika.
C. Kukonza ndi kukonza kusindikiza pamwamba pa chipata ndi mpando ndi kosavuta kusiyana ndi mitundu ina ya ma valve a pachipata.
8. Chenjezo la Kuyika Vavu ya Chipata
1. Musanayambe kukhazikitsa, yang'anani chipinda cha valve ndi kusindikiza pamwamba. Palibe dothi kapena mchenga wololedwa kumamatira.
2. Maboti mu gawo lililonse lolumikizana ayenera kumangirizidwa mofanana.
3. Kuyang'ana malo odzaza kumafuna compaction, osati kutsimikizira kusindikiza kwa filler, komanso kuonetsetsa kuti chipata chimatsegula mosavuta.
4. Asanakhazikitse ma valve opangidwa ndi zipata zachitsulo, ogwiritsa ntchito ayenera kuyang'ana mtundu wa valve, kukula kwa kugwirizana ndi kayendetsedwe ka media kuti atsimikizire kugwirizana ndi zofunikira za valve.
5. Mukayika ma valve opangidwa ndi zipata zachitsulo, ogwiritsa ntchito ayenera kusunga malo oyenerera oyendetsa galimoto.
6. Wiring ya chipangizo choyendetsa galimotoyo iyenera kuchitidwa molingana ndi chithunzi cha dera.
7. Ma valve opangidwa ndi zipata zachitsulo ayenera kusamalidwa nthawi zonse. Palibe kugunda mwachisawawa ndi extrusion amaloledwa kukhudza kusindikiza.
Nthawi yotumiza: Sep-25-2019
