Kuongorora pamberi pekuisa valve

① Nyatsotarisa kana modhi yevharuvhu uye zvakatemwa zvichisangana nezvinodiwa zvekudhirowa.

② Tarisa uone kana dzinde revharuvhu nevharuvhu disc zviri kuchinjika mukuvhurwa, uye kuti zvakanamira kana kutsveyama.

③ Tarisa uone kana vharuvhu yakuvadzwa uye kana tambo dzevharuvhu yakarukwa dzakatwasuka uye dzakasimba.

④ Tarisa uone kana kuwirirana pakati pechigaro 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, kurongedza uye fasteners (mabhoti) zvakakodzera kune zvinodiwa zvechimiro chekushanda kwepakati.

⑥ Mavharuvhu ekudzikisa mavharuvhu asakara kana akasiiwa kwenguva yakareba anofanira kubviswa, uye guruva, jecha uye mamwe marara anofanira kucheneswa nemvura.

⑦ Bvisa chivharo chekuvhara chiteshi uye tarisa dhigirii rekuvhara.Ivhavha disc inofanira kuvharwa zvakasimba.

Valve pressure test

Low-pressure, medium-pressure uye high-pressure valves inofanira kuedzwa simba uye tightness bvunzo.Alloy simbi mavharuvhu anofanirwawo kuita spectral ongororo pamatehwe rimwe nerimwe uye kuongorora zvinhu.

1. Kuedzwa kwesimba revhavha

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 yekuyedzwa haisi pasi pe5 maminetsi, uye hapana kuvuza pagoko uye kurongedza gland kuti ikwane.

2. Valve tightness test

Muedzo unoitwa nevhavha yakavharwa zvakazara kutarisa kana pane kuvuza pavharuvha yekuvharisa pamusoro.Kudzvanywa kwekuyedza, kunze kwemavharuvhu eshavishavi, mavharuvhu ekutarisa, mavharuvhu epasi uye mavharuvhu ekutsikisa, kazhinji anofanirwa kuitwa nekumanikidza kwezita.Kana ichigona kutsanangurwa Pakumanikidza kwekushanda, bvunzo inogonawo kuitwa pa1.25 nguva yekumanikidza kwekushanda, uye nzvimbo yekuisa chisimbiso yevhavha disc ichave inokodzera kana ikasadonha.

General mitemo yekuisa valve

1. Nzvimbo yekuisa yevhavha haifaniri kutadzisa kushanda, disassembly uye kugadzirisa kwemidziyo, mapaipi uye muviri wevhavha pachayo, uye kutaridzika kwekunaka kwegungano kunofanira kufungwa.

2. Kune mavharuvhu ari pahorizontal pipelines, hunde yevharuvhu inofanira kuiswa kumusoro kana kuiswa pakona.Usaise vharuvhu nevhiri reruoko richidzika.Mavharuvhu, madzinde evharuvhu uye mavhiri emaoko pamapombi akakwirira-akakwira anogona kuiswa akachinjika, uye cheni yakamira padanho rezasi inogona kushandiswa kudzora kure kuvhura uye kuvhara kwevhavha.

3. Kurongeka kwakafanana, kwakatsvinda uye kwakanaka;kune mavharuvhu ari papombi inomira, kana maitiro achibvumira, vhiri remaoko rinonyanya kukodzera kushandiswa pahupamhi hwechipfuva, kazhinji 1.0-1.2m kubva pasi, uye hunde yevharuvhu inofanira kutevera mushandisi Oriental installation.

4. Kune mavharuvhu ari padivi-ne-parutivi vertical pombi, zviri nani kuti ive neyakafanana yepakati mutsara kukwirira, uye kureba kwakajeka pakati pemavhiri emaoko hakufanirwe kunge kuri pasi pe100mm;nokuda kwemavharuvhu ari padivi-ne-parutivi horizontal pombi, anofanira kudzedzereka kuderedza chinhambwe pakati pombi.

5. Paunenge uchiisa mavharuvhu anorema pamapombi emvura, zvinopisa zvinopisa uye zvimwe zvigadzirwa, mabheji evhavha anofanira kuiswa;apo mavharuvhu anogara achishandiswa uye akaiswa kupfuura 1.8m kure nepamusoro pekushanda, nzvimbo yakagadziriswa inoshandiswa inofanira kuiswa.

6. Kana paine museve mucherechedzo pamutumbi wevharuvhu, kwakananga nemuseve ndiko kuyerera kwepakati.Paunenge uchiisa vharafu, ita shuwa kuti museve unonongedza munzira imwechete sekuyerera kwepakati mupombi.

7. Paunenge uchiisa mavhavhavha e-flange, iva nechokwadi chokuti zviso zvekupedzisira zvezviviri zviviri zvakaenzana uye zvakagadzikana kune mumwe nemumwe, uye gaskets mbiri hazvibvumirwi.

8. Paunenge uchiisa chivharo chine thread, kuitira kuti zvive nyore disassembly, valve yakasungirirwa inofanira kunge yakagadzirwa nemubatanidzwa.Mamiriro emubatanidzwa anofanirwa kufunga nezvekureruka kwekuchengetedza.Kazhinji, mvura inoyerera nepakati pevharuvhu kutanga uyezve kuburikidza nemubatanidzwa.

Kudzivirirwa kwevhavhavha

1. Muviri wevhavha unonyanya kukanda simbi, iyo inoputika uye haifaniri kurohwa nezvinhu zvinorema.

2. Paunenge uchitakura vharafu, usairasa zvisina tsarukano;kana uchisimudza kana kusimudza valve, tambo inofanira kusungirirwa kumutumbi wevhavha, uye inorambidzwa zvachose kuisungirira kune handwheel, valve stem uye flange bolt gomba.

3. Ivhavha inofanira kuiswa munzvimbo yakanakisisa yekushanda, kugadzirisa uye kuongorora, uye inorambidzwa zvachose kuiviga pasi pevhu.Mavharuvhu pamapaipi akavigwa zvakananga kana mumigero anofanirwa kuve akashongedzerwa matsime ekuongorora kufambisa kuvhura, kuvhara uye kugadzirisa mavharuvhu.

4. Ita shuwa kuti tambo dzakasimba uye dzakaputirwa nehemp, lead mafuta kana PTFE tepi.