1. Nhanganyaya kumavharuvhu emagedhi

1.1. Kushanda musimboti uye basa remagedhi mavharuvhu:

Mavharuvhu egedhi ndeechikamu chemavharuvhu akachekwa, inowanzoiswa pamapombi ane dhayamita yakakura kupfuura 100mm, kugura kana kubatanidza kuyerera kwe media mupombi. Nekuti dhisiki yevhavha iri mumhando yegedhi, inowanzonzi gedhi vharafu. Mavharuvhu egedhi ane zvakanakira zvekushanda-kuchengetedza shanduko uye kuderera kuyerera kwekudzivirira. Nekudaro, iyo yekuisa chisimbiso inogara ichipfeka uye kubuda, iyo yekuvhura sitiroko yakakura, uye kugadzirisa kwakaoma. Mavharuvhu egedhi haagone kushandiswa semavharuvhu ekudzora uye anofanirwa kunge ari munzvimbo yakazaruka kana yakavharwa zvizere. Nheyo yekushanda ndeyekuti: kana gedhi revhavha rakavharwa, tsinde yevharuvhu inofamba ichidzika uye inovimba negedhi revhavha yevhavha yekuisa chisimbiso uye chigaro chevhavha chisimbiso chepamusoro kuti chive chakatsetseka, chakapfava uye chinoenderana, chinokodzerana kudzivirira kuyerera kwe media, uye vimba nepamusoro wedge kuti uwedzere kuisa chisimbiso. Chidimbu chayo chekuvhara chinofamba chakatwasuka chichitevedza mutsetse wepakati. Kune akawanda marudzi emavhavha emagedhi, ayo anogona kukamurwa kuita wedge mhando uye parallel mhando zvichienderana nerudzi. Rudzi rumwe norumwe rwakakamurwa kuva gedhi rimwechete uye gedhi kaviri.

1.2 Chimiro:

Muviri wevhavha yegedhi unotora fomu yekuzvisimbisa. Nzira yekubatanidza pakati pevhavha yevhavha uye muviri wevharuvhu ndeye kushandisa kukwira kumusoro kwepakati mukati mevharuvhu kudzvanya chisimbiso chekuisa chisimbiso kuzadzisa chinangwa chekuisa chisimbiso. Iro gedhi revhavha yekuisa chisimbiso packing yakavharwa ne-high-pressure asbestos inotakura netambo yemhangura.

Chimiro chevhavha yegedhi inonyanya kuumbwamuviri wevharuvhu, chivharo chevhavha, furemu, dzinde revharuvhu, kuruboshwe uye kurudyi mavharuvhu discs, kurongedza chisimbiso mudziyo, nezvimwe.

Iyo valve yemuviri zvinhu yakakamurwa kuita kabhoni simbi uye alloy simbi zvinoenderana nekumanikidza uye tembiricha yepiipi yepakati. Kazhinji, muviri wevharuvhu wakagadzirwa nealoy zvinhu zvemavharuvhu akaiswa mune superheated steam masisitimu, t＞450 ℃ kana pamusoro, senge mavharuvhu anopedza simba. Kune mavharuvhu akaiswa mumasisitimu ekupa mvura kana mapaipi ane tembiricha yepakati t≤450 ℃, iyo vharafu muviri zvinhu inogona kuva kabhoni simbi.

Mavharuvhu egedhi anowanzo kuisirwa mumapaipi emvura anopfungaira ane DN≥100 mm. Iwo mazita emadhayamita emavharuvhu egedhi muWGZ1045/17.5-1 bhaira muZhangshan Phase I ari DN300, DNl25 uye DNl00.

2. Gedhi valve kugadzirisa maitiro

2.1 Valve disassembly:

2.1.1 Bvisa mabhaudhi ekugadzirisa epamusoro pevhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavha,kurura nzungu dzemabhaudhi mana evhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavha inosimudza,shandura dzinde revharuvhu nati rinopesana newachi kuparadzanisa furemu yevharuvhu kubva kumutumbi wevharuvhu, wobva washandisa kusimudza. mudziyo wekusimudza furemu pasi woiisa panzvimbo yakakodzera. Iyo valve stem nut nzvimbo inofanirwa kubviswa uye kuongororwa.

2.1.2 Bvisa rin'i inochengeta pavharuvhu inonamira mhete yemativi mana, dzvanya chivharo chevharuvhu pasi nechombo chakakosha kugadzira mukaha pakati pevhavhavhavha nerin'i yenzira ina. Zvadaro tora mhete yechina-nzira muzvikamu. Pakupedzisira, shandisa chimbo chekusimudza kusimudza chivharo chevharuvhu pamwe chete nevharuvhu yehunde uye vharuvhu disc kunze kwemuviri wevharuvhu. Iise panzvimbo yekuchengetedza, uye teerera kudzivirira kukanganisa kune valve disc joint surface.

2.1.3 Chenesa mukati memuviri wevharuvhu, tarisa mamiriro echigaro chevharuvhu chakabatana pamusoro, uye ona nzira yekugadzirisa. Ivhara vharafu yakaparadzaniswa nechivharo chakakosha kana chivharo, uye simbisa chisimbiso.

2.1.4 Sunungura mabhaudhi hinge ebhokisi rekuisa pavhavhavhavhavha. Gland yekurongedzera yakasununguka, uye hunde yevharuvhu inodzvanywa pasi.

2.1.5 Bvisa simbi dzepamusoro nedzezasi dzevharuvhu disc frame, wodzibvisa, tora madhisiki evharuvhu ekuruboshwe nekurudyi, uye chengetedza mukati universal top uye magaskets. Edza huwandu hwese hwegasket uye ita rekodhi.

2.2 Kugadziriswa kwezvikamu zvevharuvhu:

2.2.1 Nzvimbo yakabatana yechigaro chevhavha yegedhi inofanira kunge yakagadziriswa nechigadziro chakakosha chekukuya (pfuti yekukuya, nezvimwewo). Kukuya kunogona kuitwa nekukuya jecha kana emery jira. Iyo nzira zvakare kubva kune yakakora kusvika kune yakanaka, uye pakupedzisira kupukuta.

2.2.2 Iyo yakabatana pamusoro pevhavha disc inogona kukuyiwa nemaoko kana muchina wekukuya. Kana paine makomba akadzika kana grooves pamusoro, inogona kutumirwa kune lathe kana grinder ye micro-processing, uye yakakwenenzverwa mushure mekunge zvese zvagadziriswa.

2.2.3 Chenesa chivharo chevhavha uye kuvhara chisimbiso, bvisa ngura pamadziro emukati nekunze kwemhete yekumanikidza, kuitira kuti mhete yekumanikidza inogona kuiswa zvakanaka muchikamu chepamusoro chevhavhavhavha, iyo iri nyore kudzvanya. kuvhara kurongedza.

2.2.4 Chenesa kurongedza muvharuvhu stem stuffing bhokisi, tarisa kana yemukati yekurongedza chigaro mhete haina kusimba, kucheneswa pakati pegomba remukati nedzinde kunofanirwa kuzadzisa zvinodiwa, uye mhete yekunze nemadziro emukati ebhokisi rekuisa. kusamira.

2.2.5 Chenesa ngura pane yekutakura gland uye ndiro yekumanikidza, uye nzvimbo yacho inofanira kunge yakachena uye yakachena. Kusununguka pakati pegomba remukati wegland uye tsinde kunofanira kusangana nezvinodiwa, uye rusvingo rwekunze uye bhokisi rekuputira harifaniri kunamatira, kana zvisina kudaro rinofanira kugadziriswa.

2.2.6 Sunungura hinge bhaudhi, tarisa kuti chikamu chakarukwa chinofanirwa kuve chakasimba here uye kuti nzungu yakazara. Iwe unogona kuzvishandura zvishoma kumudzi webhoti neruoko, uye pini inofanira kutenderera zvishoma nezvishoma.

2.2.7 Geza ngura pamusoro pehunde yevharuvhu, tarisa kubhenda, uye ruramisa kana zvakakodzera. Iyo trapezoidal tambo chikamu chinofanira kunge chakasimba, pasina tambo dzakatyoka uye kukuvara, uye shandisa lead powder mushure mekuchenesa.

2.2.8 Chenesa mhete yechina-mu-imwe, uye kumusoro kunofanira kunge kwakatsetseka. Panofanira kunge pasina maburrs kana kumonereka mundege.

2.2.9 Bolt rimwe nerimwe rekusungirira rinofanira kucheneswa, nati inofanira kunge yakakwana uye inochinjika, uye chikamu chine shinda chinofanira kuputirwa nehupfu yemutobvu.

2.2.10 Chenesa stem nut uye mukati mekutakura:

① Bvisa masiruuru e stem nut yekuvhara nati uye imba, uye sunungura yekukiya sikururu kumucheto.

② Bvisa dzinde nati, bearing, uye disc spring, wozvichenesa neparafini. Tarisa uone kana fanicha ichitenderera uye kuti disc chitubu chine mitswe.

③ Chenesa hunde nati, tarisa kana shinda yemukati yebushing manera haina kusimba, uye masiruuru ekugadzirisa ane imba anofanira kunge akasimba uye akavimbika. Kupfeka kwebhushi kunofanira kusangana nezvinodiwa, kana zvisina kudaro inofanira kutsiviwa.

④ Isa bhotela kune inobereka uye uiise mu stem nut. Unganidza disc chitubu sezvinodiwa uye woidzosera zvakare mukutevedzana. Pakupedzisira, ivhare ne nut yekuvhara uye gadzirisa zvakasimba ne screws.

2.3 Kusangana kwevhavha yegedhi:

2.3.1 Isai madhisiki evharuvhu ekuruboshwe nekurudyi akagadzikwa kumaringi yesimbi yevharuvhu woagadzirisa nesimbi dzepamusoro nedzezasi. Iyo yepasirese kumusoro uye kugadzirisa gaskets kunofanirwa kuiswa mukati zvichienderana nemamiriro ekuongorora.

2.3.2 Isai dzinde revharuvhu nedhisiki revharuvhu muchigaro chevharuvhu kuti zviongororwe. Mushure mekunge dhisiki yevharuvhu uye chigaro chevhavha chisimbiso chepamusoro zvasangana zvizere, iyo valve disc sealing surface inofanira kunge yakakwirira kudarika chigaro chevhavha chisimbiso chepamusoro uye inosangana nezvinodiwa zvehutano. Kana zvisina kudaro, kukora kwegasket kumusoro kwepasi rose kunofanira kugadziriswa kusvikira kwakakodzera, uye kumira gasket inofanira kushandiswa kuisimbisa kuti irege kudonha.

2.3.3 Geza muviri wevharuvhu, pukuta chigaro chevharuvhu uye dhisiki revharuvhu. Wobva waisa dzinde revharuvhu nevharuvha disc muchigaro chevharuvhu woisa chivharo chevharuvhu.

2.3.4 Isa sealing packing pane yekuzvivharira chikamu chevhavhavhavha sezvinodiwa. Izvo zvinorongedzerwa zvekutakura uye nhamba yemhete dzinofanirwa kusangana nemhando yemhando. Chikamu chepamusoro chekutakura chinomanikidzwa nemhete yekumanikidza uye pakupedzisira yakavharwa neplate yekuvhara.

2.3.5 Unganidzazve mhete ina muzvikamu, uye shandisa mhete yekuchengeta kudzivirira kuti irege kudonha, uye simbisa nati yevhavha yevhavha inosimudza bhaudhi.

2.3.6 Zadza bhokisi rekuvhara vharafu nekurongedza sezvinodiwa, isa tekisheni neplate yepressure, woisunga nemakona.

2.3.7 Konesazve furemu yevhavha yevhavha, tenderedza hunde yevharuvhu yepamusoro kuti furemu idonhe pamutumbi wevharuvhu, woisunga nemabhaudhi ekubatanidza kuti isadonha.

2.3.8 Unganidzazve mudziyo wemagetsi evharuvhu; iyo yekumusoro screw yechikamu chekubatanidza inofanira kusimbiswa kuti irege kudonha, uye nemaoko edza kana vheji yevharuvhu ichichinjika.

2.3.9 Zita rezita revharuvhu rakajeka, rakasimba uye rakarurama. Zvinyorwa zvekuchengetedza zvakakwana uye zvakajeka; uye vakagamuchirwa uye vakakwaniriswa.

2.3.10 Iyo pombi uye kuvhara kwevhavha yakazara, uye nzvimbo yekuchengetedza yakachena.

3. Gedhi revhavha yekuchengetedza maitiro ehutano

3.1 Muviri wevhavha:

3.1.1 Muviri wevharuvhu unofanirwa kunge usina hurema hwakaita semaburi ejecha, makatsemuka nekukukurwa kwevhu, uye unofanirwa kubatwa nenguva mushure mekuwanikwa.

3.1.2 Panofanira kusave nemarara mumuviri wevharuvhu uye pombi, uye pokupinda nekubuda ngazvive zvisina kuvharika.

3.1.3 Ipuragi iri pazasi pemuviri wevharuvhu inofanirwa kuve nechokwadi chekuvharika kwakavimbika uye pasina kubuda.

3.2 Dzinde revhavha:

3.2.1 Dhigirii yekukotama yehunde yevhavha haifanire kunge yakakura kupfuura 1/1000 yehurefu hwakazara, kana zvisina kudaro inofanira kutwasanudzwa kana kutsiviwa.

3.2.2 Iyo trapezoidal shinda chikamu chevharuvhu chidzitiro chinofanira kunge chakasimba, chisina kukanganisa senge mabhegi akatsemuka uye mabuckles anoruma, uye kupfeka hakufanirwe kunge kwakakura kudarika 1/3 yeukobvu hwetambo yetrapezoidal.

3.2.3 Pamusoro panofanira kunge pakatsetseka uye pasina ngura. Hapafanirwe kuve nekuvhunika corrosion uye pamusoro delamination pane yekubata chikamu nechisimbiso chekurongedza. Iyo yunifomu corrosion point kudzika kwe ≥0.25 mm inofanira kutsiviwa. Kupedzisa kunofanira kuvimbiswa kuve pamusoro ▽6.

3.2.4 Tambo yekubatanidza inofanira kunge isina kusimba uye pini inofanira kugadziriswa zvakavimbika.

3.2.5 Kusanganiswa kwetsvimbo yekutema uye nut yetsvimbo inotemwa kunofanira kuchinjika, pasina kudhumhana panguva yekurohwa kwakazara, uye shinda yacho inofanira kuputirwa nehupfu yemutobvu kuitira kuzora nekudzivirira.

3.3 Kurongedza chisimbiso:

3.3.1 Iyo yekuisa kumanikidza uye tembiricha inoshandiswa inofanirwa kusangana nezvinodiwa zvepakati pevhavha. Chigadzirwa chacho chinofanirwa kuperekedzwa nechitupa chekuenderana kana kuongororwa kunodiwa uye chitupa.

3.3.2 Mamiriro ekurongedza anofanirwa kusangana nezvinodiwa zvehukuru hwebhokisi rekuvharira. Packings dzakakura zvakanyanya kana diki hazvifanirwe kushandiswa panzvimbo. Hurefu hwekutakura hunofanirwa kusangana nehukuru hwevharuvhu zvinodiwa, uye thermal tightening margin inofanira kusiiwa.

3.3.3 Chimiro chekutakura chinofanira kuchekwa kuita oblique chimiro nekona ye45 °. Nzvimbo dzedenderedzwa rega rega dzinofanirwa kudzika ne90 ° -180 °. Kureba kwekurongedza mushure mekucheka kunofanira kunge kwakakodzera. Panofanira kunge pasina gaka kana kupindirana pane iyo interface kana yaiswa mubhokisi rekutakura.

3.3.4 Ringi yechigaro chekurongedzera uye gland yekurongedzera inofanira kunge yakasimba uye isina ngura. Iyo stuffing bhokisi inofanira kuva yakachena uye yakatsetseka. Mukaha pakati pegedhi tsvimbo uye chigaro chindori inofanira kuva 0.1-0.3 mm, nehupamhi husingapfuuri 0.5 mm. Mukaha pakati pegland yekurongedza, yekunze periphery yechigaro chechigaro uye madziro emukati ebhokisi rekufukidzira rinofanira kunge riri 0.2-0.3 mm, nehupamhi husingapfuuri 0.5 mm.

3.3.5 Mushure mokunge mabhoti ehinge asimbiswa, ndiro yekumanikidza inofanira kuramba yakadzikama uye simba rekusimbisa rinofanira kuva yunifomu. Iro mukati megomba rekurongedza uye kucheneswa kwakatenderedza tsinde yevharuvhu kunofanirwa kuenderana. Iyo yekurongedza gland inofanirwa kudzvanywa mukamuri yekurongedza kusvika 1/3 yehurefu hwayo.

3.4 Nzvimbo yekuisa chisimbiso:

3.1 zvimwe.

3.4.2 Paunenge uchiunganidza test valve disc, nheyo yevhavha inofanira kuva 5-7 mm yakakwirira kudarika chigaro chevhavha mushure mekunge dhisiki yevhavha ichiiswa muchigaro chevhavha kuti ione kuvhara zvakasimba.

3.4.3 Paunenge uchiunganidza ma discs evhavha yekuruboshwe uye yekurudyi, kuzvigadzirisa kunofanira kushanduka, uye chigadziro chekudzivirira-kudonha chinofanira kunge chakasimba uye chakavimbika. 3.5 Stem nut:

3.5.1 Iyo yemukati bushing thread inofanira kunge yakasimba, isina kuputsika kana mabheji asina kujairika, uye kugadzirisa nehoko kunofanira kuva kwakavimbika uye kwete kusununguka.

3.5.2 Zvese zvinotakura zvinofanirwa kunge zvisina kusimba uye kutenderera zvinochinjika. Panofanira kunge pasina kutsemuka, ngura, ganda rinorema uye zvimwe zvinokanganisa pamusoro pemukati nekunze maoko uye mabhora esimbi.

3.5.3 Chitubu che disc chinofanira kunge chisina kutsemuka uye deformation, kana zvisina kudaro inofanira kutsiviwa. 3.5.4 Zvisurudzo zvekugadzirisa pamusoro pekiyi nut hazvifanirwe kusununguka. Iyo valve stem nati inotenderera ichichinjika uye inova nechokwadi chekuti pane axial clearance isingapfuure 0.35 mm.