Yakajairwa Valve Kuisa Zivo #1

Kuongorora pamberi pekuisa valve

① Nyatsotarisa kana iyovharafumuenzaniso uye tsanangudzo inosangana nezvinodiwa zvekudhirowa.
② Tarisa uone kana hunde yevharuvhu nevharuvhu disc inogona kuvhurwa zviri nyore, uye kuti yakanamatira here kana kuti yakatsveyama.
③ Tarisa uone kana vharuvhu yakuvadzwa uye kana shinda yevharuvhu yakarukwa yakarurama uye yakakwana.
④ Tarisa uone kana kusanganiswa kwechigaro chevharuvhu nemuviri wevharuvhu kwakasimba, kubatana pakati pevharuvhu disc nechigaro chevharuvhu, chivharo chevharuvhu uye muviri wevharuvhu, uye hunde yevharuvhu nevhavha disc.
⑤ Tarisa kana valve gasket, kutakura uye fasteners (mabhoti) zvakakodzera kune zvinodiwa zvekushanda kwepakati.
⑥ Iyo yekare kana yenguva refu yekumanikidza yekumanikidza valve inofanira kubviswa, uye guruva, jecha uye mamwe marara anofanira kucheneswa nemvura.
⑦ Bvisa chivharo chechiteshi, chengetedza dhigirii yekuisa chisimbiso, uye diski yevhavha inofanira kuvharwa zvakasimba.

Pressure test yevhavha

Low-pressure, medium-pressure and high-pressure valves inofanira kuiswa pasi pekuedzwa kwesimba uye tightness test, uye mavharuvhu esimbi alloy anofanirwawo kuiswa pasi pekuongororwa kweganda rimwe nerimwe, uye zvinyorwa zvinofanira kuongororwa.

1. Kuedza kwesimba kwevhavha
Muedzo wesimba wevhavha ndeyekuyedza vharafu munzvimbo yakashama kuti utarise kubuda kwekunze kwevhavha.Kune mavharuvhu ane PN≤32MPa, muedzo wekumanikidza ndeye 1.5 nguva yekumanikidza kwezita, nguva yekuyedza haisi pasi pe5min, uye hapana kudonha pagoko uye kurongedza gland kuti ikwane.

2. Kusimba bvunzo yevhavha
Muedzo unoitwa nevhavha yakavharwa zvakazara kutarisa kana pane kuvuza panzvimbo yekuvharisa yevharuvhu.Kudzvanywa kwekuyedza, kunze kwemavharuvhu eshavishavi, mavharuvhu ekutarisa, mavharuvhu epasi, uye mavharuvhu ekutsikisa, anofanirwa kuwanzoitwa pakumanikidzwa kwezita.Apo kushandiswa kwekushanda kunoshandiswa, inogonawo kuongororwa ne 1.25 nguva yekushanda kwekushanda, uye inokodzera kana chisimbiso chepamusoro chevhavha disc chisingaiti.