1 mfundo ndi ntchito ya valve pachipata:
Vavu yachipata ndi ya mtundu wa valve block, yomwe nthawi zambiri imayikidwa pa chitoliro chokhala ndi mainchesi oposa 100mm kuti atseke kapena kulumikiza kutuluka kwapakati mu chitoliro. Popeza disc ndi mbale yachipata, nthawi zambiri imatchedwa valve valve. Valve yachipata ili ndi ubwino wocheperako mphamvu yosinthira komanso kukana kutulutsa. Komabe, malo osindikizira ndi osavuta kuvala ndi kutayikira, stroko yotsegulira ndi yayikulu, ndipo kukonza kumakhala kovuta. Valve yachipata sichingagwiritsidwe ntchito ngati valavu yowongolera. Iyenera kukhala pamalo otseguka kapena otsekedwa kwathunthu. Mfundo yogwira ntchito ndi: pamene valve yachipata imatsekedwa, tsinde limayenda pansi malinga ndi kutalika kwa chipata chosindikizira cha valve pamwamba ndi pamwamba pa mpando wa valve, zomwe zimakhala zosalala, zosalala komanso zosagwirizana. Amakwanirana wina ndi mnzake kuti ateteze sing'anga kuti isadutse, ndikudalira mphero yapamwamba kuti iwonjezere kusindikiza. Kutseka kwake kumayenda molunjika pamzere wapakati. Pali mitundu yambiri ya ma valve a pachipata, omwe amatha kugawidwa mumtundu wa wedge ndi mtundu wofanana. Mtundu uliwonse umagawidwa kukhala nkhosa yamphongo imodzi ndi nkhosa yamphongo iwiri.
2 kapangidwe:
Thupi la valve pachipata limatenga mawonekedwe odzisindikiza okha. Njira yolumikizira chivundikiro cha valve ndi thupi la valavu ndikugwiritsa ntchito kuthamanga kwapakati kwa sing'anga mu valavu kukakamiza kusindikiza kusindikiza kuti akwaniritse cholinga chosindikiza. Kuyika kwa asbestos wothamanga kwambiri ndi waya wamkuwa kumagwiritsidwa ntchito kusindikiza valavu yachipata.
Mapangidwe a valve pachipata amapangidwa makamaka ndi thupi la valve, bonnet, chimango, tsinde, kumanzere ndi kumanja kwa valve disc, chipangizo chosindikizira, ndi zina zotero.
The vavu thupi zakuthupi amagawidwa mu carbon zitsulo ndi aloyi zitsulo malinga ndi kuthamanga ndi kutentha kwa sing'anga payipi. Nthawi zambiri amaikidwa mu valavu ya superheated nthunzi dongosolo, t> 450 ℃, valavu thupi amapangidwa ndi aloyi zinthu, monga kukatentha mpweya valavu, etc. valavu thupi zakuthupi ndi carbon steel.
Mavavu a pachipata nthawi zambiri amaikidwa pamapaipi amadzi a nthunzi ndi DN ≥ 100mm. Pali mitundu itatu ya ma diameter mwadzina a chipata valavu mu gawo loyamba wgz1045 / 17.5-1 boiler ku Zhangshan, mwachitsanzo DN300, dnl25 ndi dnl00.
Nthawi yotumiza: Apr-07-2020
