TestNziranokutiAkasiyana-siyana mavharuvhu muValve Inspection
Kazhinji,mavharuvhu emaindasitirihavadikuyedza simbapanguva yekushandiswa apo yakagadziriswa vharafu muviri uye kuvhara kanacorrosiveuyekukuvadzwamuviri wevharuvhu uye chivharo zvichaitwa kuongororwa kwesimba.The set pressurebvunzo,reseating pressurebvunzo uye mamwe maedzo evhavhavhavha achasangana nezvinodiwas muBhuku reMushandisi uye maitiro akakodzera.Tiyo valve ichaitwa kuitira simba uye yekuisa chisimbiso bvunzo isati yaiswa.Tiye low pressure mavharuvhu anozoongororwa zvisina tsarukano kune 20% asi 100%kana asina kukodzera;mavharuvhu epakati nepamusoro achaongororwa 100%.
1,PressureTest MethodnokutiBall Valve
Muedzo wesimba wepneumatic bhora vharafuichaitwa pahafu-yakazaruka nzvimboyebhora.
① Kuisa chisimbisotest forfloatingbhora vharafu:gadzira valve pahafu-yakazaruka nzvimbo, unza test medium kusvika kune imwe mugumo uye simbisa imwe mugumo, shandura bhora kakawanda uye vhura iyo yakavharwa yekupedzisira kuti iongororwe kana valve iri pedyo.At panguva imwe chete, ongorora mashandiro ekuisa chisimbiso pakurongedza uyegasket,uyeparege kuva nevunza.Isuma svikiro rebvunzo kubva kune imwe magumo uye dzokorora pamusoro pebvunzo.
②Kuisa chisimbisotest for fixed ball valve: tenderedza bhora pasina mutoro kanoverengeka usati waedzwa, iyo yakagadziriswa bhora vharafu iri padhuze panguva ino, uye suma svikiro rebvunzo kune yakatsanangurwa kukosha kubva kune imwe mugumo.Shandisa iyo yekumanikidza geji kuti utarise kuita chisimbiso kwekuunza magumo, uye iko kurongeka kweiyo yakashandiswa yekumanikidza geji ndeye 0.5 ~ 1 nhanho inerangeye 1.5 nguva yakakwirira kudarika test pressure.Inokodzera kana pasina kudzvanywa kunoburitswamukati menguva yakatarwa.Taurira svikiro rekuyedza kubva kune imwe magumo uye dzokorora pamusoro pebvunzo, wobva wagadzira vharafu pahafu-yakavhurika chinzvimbo, vhara magumo ese, zadza svikiro mukati megomba uye tarisa kurongedza uye gasket pasi pekumanikidzwa kwebvunzo, ichavehapana kuvuza.
③Kuiswa chisimbiso kuyedzwa kuchaitwa kune yega yega chinzvimbo chetatu-nzira bhora vharafu.
2,PressureTest Methodnokuti CheckValve
Testmamiriro ekutarisa vharafu: thevharafu clack axisof simudza cheki valveiri mukatihorizontallyvertical position, uye chiteshi axis uyevharafu clack axisof swing check valvevarianenge akaenzana nemutsara wakachinjika.
Munguva yekuyedzwa kwesimba, suma svikiro rekuyedza kune yakatsanangurwa kukosha kubva kumagumo ekupinza, vhara imwe magumo uye tarisa muviri wevharuvhu uye chivharo, inokodzera kana pasina kuvuza.
Forkuisa chisimbiso bvunzo, suma svikiro rekuyedza kubva kumagumo ekubuda, tarisa nzvimbo yekuisa chisimbiso painopinza, uye inokodzera kana pasina kuvuza pakurongedza.uyegasket.
3,PressureTest MethodnokutiKuderedza Valve
①Kuyedzo yesimba yekudzikisa vharafu, inounganidzwa mushure mekuyedzwa kwechikamu chimwe kazhinji asi inogona kuyedzwa mushure mekuunganidza zvakare.Tiye nguva yenguva yekuedzwa kwesimba:lminnokutiDN <50mm, kureba kupfuura2minnokutiDN65~150mmuye kureba kupfuura3minnokutiDN> 150mm. Mushureweldingmavhuuye gungano, kuedza kwesimba nemhepo uye pasi pe 1.5 nguva dzepamusoro-soro yekuderedza valve ichaitwa.
②Iyo chaiyo yekushanda svikiro ichashandiswa pakuisa chisimbiso bvunzo.If mhepo kana mvura inoshandiswa kuyedza, kudzvanywa 1.1 nguva yezita rekumanikidza inoshandiswa kuyedza.Whuku achiitisasteam test, iyo yakanyanya kubvumidzwa kumanikidza kushanda pasi pekushisa kwekushanda ichaiswa, uye mutsauko uripo pakati pekumanikidzwa kwekupinda nekubuda kunze kunodiwa kwete kuderera kupfuura0.2MPa. Thebvunzo nzira ndeye: mushure mekugadzirisa iyo inlet pressure, gadzirisa iyokugadzirisa sikuruuyevhavha zvishoma nezvishoma kuita iyo yekubuda kudzvanywa inogona sensitively uyenokusingaperishanduko mukati mehuwandu pakati pehukuru uye hushoma kukosha, isina kumira uye kusungirira.Closetheblock valvekuseri kwevhavhavhamushure mekugadzirisainlet pressure.Theoutlet pressure ichave yakanyanya kukosha uye yakaderera kukosha uye kukosha kwekukwira mukati me2 min yekumanikidza yekubuda kunosanganazvinodiwamuna Table 4.176-22.Zvichakadarohuwandu hwepombi kuseri kwevhavha inokodzera kana ikasangana nezvinodiwa muTafura 4.18.Riniiyo yekubuda kumanikidza ndeye zero mushure mekugadzirisa inlet yekumanikidza yemvura nemhepo yekudzikisa vharafu, vhara iyo yekudzikisa valve kuti iite yekuisa chisimbiso bvunzo uye inokodzera kana pasina kuvuza mukati me2 min.
4,PressureTest MethodnokutiButterfly Valve
Simba rachotest forpneumatic butterfly valvezvakafanana nevhavha yekumisa.Fkana kuisa chisimbiso kuita bvunzo yebutterfly valve, suma svikiro rebvunzo kubva kumagumo kwepakati kuyerera kupinda, vhura iyobutterfly ndiro, vhara imwe magumo uye jekiseni kudzvanywa kune yakatarwa kukosha.Mushure mekusimbisa kurongedza uye dzimwe nzvimbo dzekuisa chisimbiso hadzina kubuda, vhara butterfly plate, vhura imwe magumo uye tarisa iyokuisa chisimbisoye butterfly plate, inokwanisa kana pasina kuvuza.Tiyo butterfly valve iyo inoshandiswa sekudzora kuyerera haigone kushandiswa kuvhara bvunzo yekuita.
5,PressureTest MethodnokutiPlug Valve
①Paunenge uchiita bvunzo yesimba yevhavhavhavha, suma yepakati kubva kune imwe mugumo, vhara mamwe chiteshi,screwiyo plug kune yakazara-yakavhurika yekushanda chinzvimbo mukuteedzana bvunzo, uye muviri wevharuvhu unokodzera kana pasina kuvuza kwakawanikwa.
②Paunenge uchiita bvunzo yekuisa chisimbiso, iyozvakananga-kuburikidzaplug ichachengeta iyopressuremumhango yakaenzana nekumanikidza mugero.Rotate plug kuvhara chinzvimbo, tarisa kubva kune imwe magumo, uye wotenderedza plug ye180°uye dzokorora pamusoro bvunzo.Tiyo nzira nhatu kana ina-nzira plug vharafu ichachengeta kudzvanywa mugomba kuenzana nedzvinyiriro pane imwe magumo echiteshi, tenderedza plug kuvhara chinzvimbo mukutevedzana, suma kumanikidza kubvarectangularpedzisa uye tarisa imwe magumo panguva imwe chete.
Pamberi pekuyedzwa, zvinotenderwa kuisa imwe layer yeasiri-asidhiyakaonda lubricatingoiri pane yekuvharisa pamusoro pevhavhavhavha, uye inokodzera kana pasina kuvuza uye yakawedzerwadropletzvakawanikwa munguva yakatarwa.Nguva yekuyedza yevharuvhu yeplug inogona kupfupika uye inogona kunge iri 1 ~ 3min kazhinji zvichienderana nedhayamita yezita.Tiyo plug valve yemarasha gasi ichaitwa mhepo yekuisa chisimbiso bvunzo ine 1.25-kupeta kushanda kumanikidza.
6,Pressure Test Method yeDiaphragm Valve
Kuti uedze simba revharuvhu yediaphragm, suma yepakati kubva kune chero yekupedzisira, vhura vharafuclackuye kuvhara imwe magumo, tarisa muviri wevhavha uye kuvhara mushure mekuedzwa kwekuedza kukwira kune yakakosha kukosha, uye inokodzera kana pasina kubuda.Decrease kudzvanywa kudzvinyiriro yekuisa chisimbiso bvunzo, vhara iyo valve clack uye vhura imwe magumo ekutarisa, uye inokodzera kana pasina kuvuza.
7,Pressure Test Method yeStop Valve uyeThrottling Valve
Zvekuyedzwa simba kwevharavhavha yekumisa uye throttling valve, kazhinji isa vharuvhu yakaunganidzwa pane yekumanikidza test furemu, yakavhurika vharafu clack, jekiseni yepakati kune yakataurwa kukosha, uye tarisa kana muviri wevharuvhu nechivharo zviri.steaminguye kubuda.Chikamu chimwe chete chinogona kuitirwasimbatest futi.Tiye yekuisa chisimbiso bvunzo ndeyekumira vharafu pano.Rinikuyedza, tsvimbo yevharuvhu yevharuvhu yekumira iri munzvimbo yakatwasuka, yakavhurika vharafu, suma yepakati kubva kune imwe mugumo pasi pevharuvhu clack kune yakatarwa kukosha uye tarisa kurongedza uye gasket.Crasikirwa nevhavhavhavha mushure mekukodzera uye vhura imwe magumo kuti utarise kana yadeuka.If zvosesimbabvunzo uye yekuisa chisimbiso bvunzo yevhavha kuti iongororwe, kuyedza kwesimba kunogona kuitwa kutanga, uyezve kudzikisa kudzvanywa kune yakatarwa kukosha nekuisa chisimbiso bvunzo, tarisa kurongedza uye gasket, vhara vharavhavhavha, uye vhura yekubuda kupera kuti uone kana kuiswa chisimbiso.pamusoroyadeuka.
8,Pressure Test Method yeGedhi Vavhavha
Muedzo wesimba wegedhivharafu zvakafanana nevhavha yekumisa.Theino nzira mbiri dzekuisa chisimbiso bvunzo dzegedhivharafu.
①Vhura iyogate platekuita kuti kumanikidza muvharuvhu kusimuke kune yakatsanangurwa vharafu, vhara iyogate plateuye nekukasira buritsa vharuvhu yegedhi, tarisa kana zvikamu zvekuvharisa pamativi ese egedhi ndiro dzaburitswa, kana kuti jekiseni zvakananga test medium munzvimbo yeplug pachivharo chevharuvhu kune kukosha kwakatarwa, uye tarisa kuvharwa pamativi ese egedhi ndiro.Tambotaura nzira inonzikuedza kwepakati pekumanikidzauye haina kukodzera kuvhara bvunzo yevharuvhu yegedhi ine dhayamita yezita yakaderera paneDN32mm.
②Imwe nzira ndeyeku: kuvhura ndiro yegedhi kuti kuyedza kumanikidza kwevhavha kusimuke kune kukosha kwakatarwa, wobva wavhara ndiro yegedhi, vhura ndiro yebofu kune imwe mugumo kutarisa kana nzvimbo yekuvharisa yadeuka, uyereversekutevedzana kwekudzokorora bvunzo iri pamusoro kusvika yakwana.
Iyo yekuisa chisimbiso bvunzo yekurongedza uye gasket yepneumatic gedhi vharafuichaitwa pamberi pebvunzo yekuisa chisimbiso chegedhi ndiro.
9,Pressure Test Method for Safety Valve
①Muedzo wesimba wevhavhavha yekudzivirira wakafanana nemamwe mavharuvhu uye mvura inotorwa kuti iedzwe.Paunenge uchiyedza chikamu chezasi chemuviri wevharuvhu, suma kudzvanywa kubva pakupindaI=Ikupera, uye kuvhara nzvimbo yekuisa chisimbiso.Whuku ichiedza chikamu chepamusoro chemuviri wevharuvhu uye chivharo chevharuvhu, suma kumanikidza kubva pakubudaElkupera, uye kuvhara mamwe magumo.It inokodzera kana muviri wevhavha uye chivharo zvisina kuburitswa mukati menguva yakatarwa.
②The common medium inoshandiswakuisa chisimbisotest uyenguva dzose kumanikidzwa kuedzandizvo:saturated steaminoshandiswa senzira yekuedza yevhavhavhavha yeutsi;mweya unoshandiswa senzira yekuyedza yevharuvhu inoshandiswa mukatiammoniakana imwe gasi;mvura inoshandiswa seye test medium yevharuvhu inoshandiswa mumvura nezvimweisingakurezvinwiwa.Yevhavhavha yekudzivirira pane dzimwe nzvimbo dzakakosha,nitrogeninoshandiswa seye test medium semazuva ese.
Iyo yezita kudzvinyirirwa inotorwa sekumanikidza bvunzo mukuisa chisimbiso bvunzo kanokwana kaviri, uye inokodzera kana pasina kuvuza mukati menguva yakatarwa.Thedzi nzira mbiri dzekubuda bvunzo: yekutanga ndeyekuisa chisimbiso chekubatanidza zvikamu zvevhavhavhavha, namatidza bepa rakatetepa pakubuda E1 flange uchishandisa.girisi, uye inodeuka kana bepa rakatetepabulged kanaqualifiedkana bepa rakatetepa harinabulge. Thenzira yechipiri ndeyekunamira ndiro yakatetepa yepurasitiki kana mamwe mahwendefa pane yepasi pekunze flange uchishandisagirisi, jekiseni mvura kuti isimbise valve clack uye itarise, uye inokodzera kana kwetekutubukiramumvura.Theset pressuretest uyereseating pressurebvunzo yevhavhavhavha ichaitwa kwete yakaderera pane 3 nguva, uye inokodzerakana achizadzisa zvinodiwa.Prenda ona iyo GB/T 12242-1989Performance Test Nzira dzeKuchengetedza Mavharuvhu yekuongororwa kwekuita kwevhavhavhavha.
Nguva yekutumira: Zvita-06-2021