Kudzvanya Kuedza Nzira Yeakasiyana Maindasitiri Mavharuvhu
Kazhinji, mavharuvhu eindasitiri haaedzirwe simba mukushandiswa, asi mushure mekugadzirisa, muviri nebhoneti kana ngura yakakuvadzwa muviri uye bhoneti inofanirwa kuongororwa simba. Kune mavharuvhu ekuchengetedza, kudzvinyirirwa kwavo nguva dzose uye kumanikidzwa kwekudzoka uye mamwe maedzo anozoenderana nezvaanoreva uye nemitemo yakakodzera. Muedzo wesimba revhavha uye bvunzo yekuisa chisimbiso chevharuvhu inofanira kuitwa pavharuvhu hydraulic test bench isati yaiswa valve. Low-pressure valves inofanira kuongororwa 20% nekusagadzikana, 100% nevasina kukodzera, uye 100% nepakati uye high-pressure valves. Mvura, oiri, mhepo, chiutsi, nitrogen uye mamwe anowanzo shandiswa midhiya yevhavha pressure test. Nzira dzekudzvanya dzekuyedza dzeakasiyana mavharuvhu eindasitiri ane pneumatic mavharuvhu ndeaya anotevera:
1. Kudzvinyirira Test Method yeGlobe Valve uye Throttle Valve
Kuedza kwesimba kweglobe uye throttle valves kazhinji inoisa mavharuvhu akaungana munzvimbo yekumanikidza yekumanikidza, vhura dhisiki, jekiseni yepakati kusvika kune yakatsanangurwa kukosha, uye tarisa kana muviri uye chivharo chiri kudikitira uye kubuda. Kuedza kwesimba kunogonawo kuitwa pane imwe chidimbu. Kuisa chisimbiso bvunzo kunoitwa chete kune eglobe mavharuvhu. Munguva yekuedzwa, tsinde yevhavha yepasi rose iri munzvimbo yakatwasuka, disc inovhura, iyo yepakati inotangwa kubva pasi pe disc kusvika kune yakatemwa kukosha, uye iyo filler uye gasket inotariswa. Kana inokodzera, dhisiki yakavharwa uye imwe magumo inovhurwa kuti itarise kana paine kuvuza. Kana iyo simba uye yekuisa chisimbiso bvunzo yevhavha ichizoitwa, kuyedza kwesimba kunogona kuitwa kutanga, ipapo kudzvanywa kunogona kudzikiswa kune iyo yakatarwa kukosha kwechisimbiso bvunzo kuti utarise iyo filler uye gasket, wobva wavhara iyo valve disc uye. vhura pekubuda napo kuti uone kana nzvimbo yekuvharisa iri kubuda.
2. Kudzvinyirira Test Method yeGedhi Valve
Kuedzwa kwesimba kwevhavha yegedhi kwakafanana neyevhavha yepasi. Pane nzira mbiri dzekuisa chisimbiso bvunzo dzegedhi mavharuvhu.
(1) Gedhi rinovhurwa kuti risimudze kumanikidzwa muvharivha kune iyo yakatemwa kukosha; wobva wavhara gedhi uye pakarepo bvisa valve yegedhi. Tarisa kuti pane kuvuza here panzvimbo dzekuvharisa pamativi ese egedhi kana jekiseni rekuyedza mukati zvakananga mupuragi riri pachivharo kune kukosha kwakatarwa, uye tarisa nzvimbo dzekuvharira pamativi ese egedhi. Nzira iri pamusoro inonzi inonzi intermediate pressure test. Iyi nzira haina kukodzera kuvharisa bvunzo yegedhi mavharuvhu ane dhayamita yezita isingasviki DN32mm.
Imwe nzira ndeyekuvhura gedhi kuitira kuti muedzo wekumanikidza wevhavha usimuke kune kukosha kwakatarwa; wovhara gedhi uye wovhura imwe magumo ebhofu kuti uone kana nzvimbo yekuvharisa iri kubuda. Dzorera musoro wako kumashure uye dzokorora bvunzo dziri pamusoro kusvika wakwanisa.
Iyo yekuisa chisimbiso bvunzo yekuzadza uye gasket yepneumatic gedhi valve inofanirwa kuitwa pamberi pekuiswa chisimbiso bvunzo yegedhi.
3. Pressure Test Method yeBhora Valve
Muedzo wesimba wepneumatic ball valve unofanirwa kuitwa muhafu-yakavhurika mamiriro ebhora valve sphere.
(1) Sealability bvunzo yeinoyangarara bhora vharafu: vharafu iri mune semi-yakavhurika mamiriro, imwe mugumo inounzwa mukati meyedzo yepakati, imwe magumo yakavharwa; bhora rinotenderedzwa kakawanda, vheji iri munzvimbo yakavharwa, kuguma kwakavharwa kunovhurwa kuti kutariswe, uye kuiswa chisimbiso kwekuzadza uye gasket kunotariswa panguva imwe chete, hapana kubuda kunobvumirwa. Zvadaro svikiro rekuedza rinotangwa kubva kune rumwe rutivi kudzokorora kuedza.
(2) Kuisa chisimbiso chevhavha yebhora yakagadziriswa: pamberi pekuedzwa, bhora rinotenderera kakawanda pasina mutoro, uye bhoti yakagadziriswa iri munzvimbo yakavharwa, kubva kune imwe mugumo wepakati yekuedza kusvika kune yakatemwa kukosha; kuvharwa kwechisimbiso chekuguma kwekutanga kunotariswa nekudzvinyirira gauge, iyo chaiyo iyo iri 0.5-1 giredhi, uye iyo yekuyera chiyero ndeye 1.6 nguva dzekudzvanywa kwebvunzo. Mukati menguva yakatarwa, hapana hypotension phenomenon inokodzera; ipapo test medium inosumwa kubva kune rumwe rutivi kudzokorora bvunzo iri pamusoro. Zvadaro, vharuvhu iri mu semi-yakazaruka mamiriro, migumo yose yakavharwa, uye mukati megomba rakazadzwa nepakati. Pasi pekumanikidzwa kwekuyedza, iyo filler uye gasket inofanirwa kuongororwa pasina kuvuza.
(3) Mavharuvhu matatu ebhora anofanirwa kuongororwa kuti avhare panzvimbo dzese.
4. Pressure Test Method yeCock Valve
Kana kuedza kwesimba kwejongwe rejongwe kuchiitwa, iyo yepakati inotangwa kubva kune imwe mugumo, imwe nzira yakavharwa, uye mapulagi anotenderedzwa kune ese ekushanda nzvimbo. Hapana kuvuza kunowanikwa mumuviri wevharuvhu kuti uve unokodzera.
(2) Mukuedza kwekuisa chisimbiso, jongwe rakatwasuka rinofanirwa kuchengetedza kudzvanywa mugomba rakaenzana neiyo iri muchiteshi, tenderedza plug kuenda kunzvimbo yakavharwa, tarisa kubva kune imwe magumo, wozotenderedza plug 180 degrees kudzokorora pamusoro bvunzo; iyo nzira nhatu kana ina-nzira yejongwe vharafu inofanira kuchengetedza kumanikidzwa mumhango yakaenzana neiyo kune imwe mugumo wechiteshi, uye kutenderedza plug kune yakavharwa chinzvimbo. Kudzvinyirirwa kunounzwa kubva kukona yakarurama uye kunotariswa panguva imwe chete kubva kune imwe mugumo.
Oiri isina-asidhi yakaonda yekuzora inotenderwa kuvezwa pachisimbiso chepamusoro pamberi pebhenji rejongwe rekuongorora. Hapana kubuda uye madonhwe emvura akawedzera anowanikwa mukati menguva yakatarwa. Nguva yekuedza yevhavha yejongwe inogona kuva shoma. Kazhinji, dhayamita yezita ndeye 1-3 maminetsi.
Ivhavha yejongwe yegesi ichaongororwa kusimba kwemhepo pakushanda kwekushanda kwe1.25 nguva.
5. Pressure Test Method yeButterfly Valve
Muedzo wesimba wepneumatic butterfly valve wakafanana neyevharuvhu yeglobhu. Chisimbiso chekuita chisimbiso chevhavhavhavhavha yevhavha inofanira kuunza chiyero chekuedza kubva kumagumo ekuyerera kwepakati, butterfly plate inofanira kuvhurwa, imwe mugumo inofanira kuvharwa, uye jekiseni rinomanikidzwa rinofanira kusvika kune yakatemwa; mushure mekutarisa kuzadza uye zvimwe zvisimbiso pasina kudonha, ndiro ye butterfly inofanira kuvharwa, imwe mugumo inofanira kuvhurwa, uye chisimbiso chepureti ye butterfly inofanira kuongororwa kuti ikwanise pasina kubuda. Butterfly mavharuvhu anoshandiswa kudzora kuyerera haagone kuyedzwa kuita chisimbiso.
6. Kudzvinyirira Test Method ye Diaphragm Valve
Muedzo wesimba we diaphragm valve inosuma yepakati kubva kumagumo, inovhura disc, uye inovhara imwe magumo. Kana iyo yekumanikidza yekuyedza ichikwira kune yakatsanangurwa kukosha, iyo valve muviri uye chivharo chinozokodzera pasina kuvuza. Ipapo kudzvanywa kunodzikiswa kune yekuvharisa bvunzo kudzvanywa, dhisiki yevhavha yakavharwa, imwe magumo inovhurwa kuti iongororwe, uye hapana kuvuza kunokodzera.
7. Pressure Test Method yeCheck Valve
Tarisa mavharuvhu ebvunzo mamiriro: simudza cheki vharafu disc axis iri perpendicular kune yakatwasuka chinzvimbo; swing cheki vharafu chiteshi axis uye disc axis dzinenge dzakafanana kune yakachinjika mutsara.
Muyedzo yesimba, svikiro rekuyedza rinounzwa kubva kumagumo ekupinza kusvika kune yakataurwa kukosha, uye imwe magumo yakavharwa kuti ione kuti muviri wevharuvhu uye chivharo zvinokodzera pasina kuvuza.
Sealability bvunzo inounza bvunzo yepakati kubva pakubuda, uye inoongorora nzvimbo yekuisa chisimbiso pamagumo ekunze. Hapana kuvuza pane iyo filler uye gasket inokodzera.
8. Kudzvinyirira Test Method of Safety Valve
Muedzo wesimba wevhavhavha yekudzivirira, semamwe mavharuvhu, unoitwa nemvura. Paunenge uchiedza chikamu chezasi chemuviri wevhavha, kudzvinyirirwa kunotangwa kubva kune inlet I = ndinopera uye nzvimbo yekuvhara yakavharwa; paunenge uchiedza chikamu chepamusoro chemuviri wevhavha uye chivharo, kudzvinyirirwa kunotangwa kubva pakubuda kweEl end uye mamwe magumo akavharwa. Muviri wevharuvhu uye chivharo zvinokodzera pasina kuvuza mukati menguva yakatarwa.
(2) Kuisa chisimbiso bvunzo uye inogara ichimanikidza bvunzo, kazhinji uchishandisa yepakati: vharafu yekuchengetedza vharafu yakazadza muutsi seyekuyedza svikiro; ammonia kana mamwe mavharuvhu egasi anoshandiswa mhepo senge test medium; mvura uye mamwe asina-kuora mvura mavharuvhu akashandisa mvura sezvo test medium. Nitrogen inowanzoshandiswa senzira yekuedza yekudzivirira mavharuvhu mune dzimwe nzvimbo dzakakosha.
Muedzo wekuisa chisimbiso unoitwa nemazita ekumanikidza kukosha sekumanikidza kwekuyedza, inoteverwa neisingasviki kaviri, uye hapana kuvuza mukati menguva yakatarwa inokodzera. Kune nzira mbiri dzekuona kubuda kwemvura: imwe ndeyekuisa chisimbiso chevhavhavhavha yekudzivirira, uye kuvhara pepa rakatetepa paEl flange nebhotela, iyo inoputika uye isingakodzeri; imwe yacho ndeyekusimbisa ndiro yakatetepa yepurasitiki kana imwe ndiro iri pazasi peiyo kunze flange nebhota, uye kunama dhisiki yevharuvhu nemvura, kuitira kuti utarise kuti mvura haina kutumbuka kuti ikwane. Chengetedzo vharafu inogara ichimanikidza uye yekudzoka kumanikidza bvunzo nguva isiri pasi pe3 nguva, inosangana nezvinodiwa kune vanokwanisa.
Iwo akasiyana siyana ekuita bvunzo dzekuchengetedza mavharuvhu anogona kuwanikwa muGB/T 12242-1989 yekuchengetedza valve performance test nzira.
9. Kudzvinyirira Kuedza Nzira yeKudzvinyirira Kuderedza Valve
(1) Kuedza kwesimba kwemavharuvhu ekudzvinyirira kunowanzo kuunganidzwa mushure meyedzo-imwe chidimbu, uye inogona zvakare kuunganidzwa mushure mekuedzwa. Nguva yekuedzwa kwesimba yaive: lmin neDN 150 mm yakanga inopfuura maminitsi matatu.
Mushure mokunge mabhero akabatanidzwa nezvikamu, kuedza kwesimba kunoitwa nemhepo pakumanikidzwa kukuru kwe1.5 nguva yevhavha yekudzivirira.
(2) Kuisa chisimbiso bvunzo ichaitwa zvinoenderana neiyo chaiyo yekushanda svikiro. Kana yakaedzwa nemhepo kana mvura, bvunzo inoitwa pa1.1 nguva yekumanikidza kwezita, uye kana yakaedzwa nemhepo, pahupamhi hunobvumirwa kushanda kumanikidza patembiricha yekushanda. Musiyano uripo pakati pekumanikidza kupinza uye kubuda kwekumanikidza hakusi pasi pe 0.2 MPa. Iyo nzira yekuyedza yakaita seiyi: mushure mekugadzirisa inlet kudzvanywa, iyo yekugadziridza screw yevhavha inogadziriswa zvishoma nezvishoma kuitira kuti iyo yekubuda pressure inogona kuchinja zvine hunyoro uye nekuenderera mberi muhupamhi hwepamusoro uye hushoma, pasina kudzika uye kuvharika. Kune mavharuvhu ekuyamura emhepo, kana inlet pressure ichigadziriswa, kubuda kwevhavha yevhavha yekuvhara ndiyo yakakwirira uye yakaderera. Mukati maminetsi maviri, kuwedzera kwekumanikidza kwekubuda kunofanirwa kuenderana neTafura 4.176-22. Zvichakadaro, vhoriyamu yepombi kuseri kwevhavha inofanirwa kuve inokodzera seTafura 4.18. Kune mavharuvhu ekuyamura emvura uye emhepo, kana inlet inodzvanywa ichigadziriswa, kudzvanywa kwekubuda kunofanira kunge kuri kunze. Kana iyo orifice pressure iri zero, vhara vharanda yekuyamura yekuisa chisimbiso bvunzo, uye hapana kuvuza mukati memaminetsi maviri inokodzera.
Nguva yekutumira: Sep-19-2019
