Kusarudzwa kwevhavha uye kutsiva matanho ekudzivirira Kusarudzwa kwevhavha uye kuiswa kwemarara ekupisa hurongwa
Kukosha kwekusarudzwa kwevharuvhu yekugadzirisa kusarudzwa kwemaitiro evhavha kunobva pakushandiswa kwepakati, tembiricha, kudzvanywa pamberi uye shure kwevharuvhu, kuyerera, muviri uye kemikari zvimiro zvepakati uye dhigirii yehutsanana hwenhau dzakadai sekufungisisa kwakazara kusarudza. Valve chimiro kusarudzwa kwekururama uye kurongeka, zvakanangana nekushandiswa kwekuita, kugadzirisa kushanda, kugadzirisa kugadzikana, uye hupenyu hwebasa.
Kukosha kwekusarudzwa kwevharuvhu
Kusarudzwa kwemaitiro evhavha kunobva pakushandiswa kwepakati, tembiricha, kudzvanywa pamberi uye mushure mevhavha, kuyerera, muviri uye makemikari zvinhu zvepakati uye dhigirii yakachena yepakati uye zvimwe zvinhu. Valve chimiro kusarudzwa kwekururama uye kurongeka, zvakanangana nekushandiswa kwekuita, kugadzirisa kushanda, kugadzirisa kugadzikana, uye hupenyu hwebasa.
Kusarudzwa kwevharuvhu kunoda kuitwa ruzivo rwemamiriro ekushanda
I. Maitiro ekugadzirisa:
1. Zita repakati.
2, medium density, viscosity, tembiricha, hutsanana hwepakati (pamwe nechero chinhu).
3, zvemuviri uye zvemakemikari zvimiro zvepakati: senge ngura, toxicity, asidhi uye alkaline.
4, kuyerera kwepakati: yakakura, yakajairika, diki.
5, iyo midhiya vharafu pamberi, mushure mekumanikidza kwevharuvhu: yakakura, yakajairika, diki.
6. Medium viscosity, iyo yakakura iyo viscosity, iyo yakawanda Cv kukosha kwekuverenga.
Maparamita aya ANOSHANDISWA KUYERERA UKWIRI HWEVARIVITI, ZVINHU ZVINOITWA Cv VALUE, UYE ZVINHU ZVAKAKODZERA YEVIRIVIRI.
Zviviri, zvinoshanda parameters:
1. Maitiro ekuita: magetsi, pneumatic, electro-hydraulic, hydraulic.
2, basa revhavha: mutemo, kucheka, mutemo uye kucheka kugovana.
3, control mode: positioner, solenoid valve, pressure yekudzikisa valve.
4. Zvido zvenguva yekuita.
Ichi chikamu chezviyero chinonyanya kushandiswa kuona zvinodiwa zvevhavha zvinoda kugadziriswa nezvimwe zvinhu.
Matatu, kuputika-chiratidzo chekudzivirira paramita:
1, giredhi-isina kuputika.
2. Chidziviriro chepamusoro.
4. Zvakatipoteredza uye dynamic parameters:
1. Ambient tembiricha.
2, simba paramita: mhepo yekumanikidza, simba remagetsi.
Chengetedzo yekutsiviwa kwevharuvhu
Kana iyo valve ichizotsiviwa, zviyero zvehukuru zvinotevera zvinofanira kupiwa kuti zvidzivise valve haigoni kuiswa, kana kuiswa, kana nzvimbo haina kukwana nekuda kwekusawirirana kwevagadziri vevhavha, kana mitemo yakasiyana-siyana inoshandiswa, kana yakasiyana-siyana yevhavha.
Semidziyo yekubatsira yekurasa kupisa kwemagetsi ekugadzira simenti system, kusarudzwa kwevharuvhu uye kuiswa kweyakanyanya tembiricha flue vharafu kwakakosha kune yakachengeteka, ine hupfumi uye inoshanda mashandiro emarara kupisa magetsi ekugadzira system, kunyangwe idiki muhuwandu uye kukosha. . Iyo yakanyanya tembiricha flue vharafu yemarara kupisa magetsi ekugadzira simenti system yakasiyana neiyo general thermal power plant. Iko hakuna matambudziko ekupisa tembiricha deformation uye kupfekwa kweguruva kweplate yakakura mune thermal power plant. Kazhinji kushandisa Q235 simbi plate welding, uye ukobvu hwakanyanya kutetepa, kazhinji pazasi 6mm. Kana iyi vharafu ichishandiswawo mumarara ekupisa magetsi ekugadzira hurongwa, inosungirwa kukonzera yakafara ndiro deformation, yakanamatira, bypass leakage rate yakakura, inoparadza yakawanda yekupedza gasi zviwanikwa panguva imwe chete, mutemo wekuita hauna kunaka. SP furnace bypass valve yega yega
Semidziyo yekubatsira yemarara kupisa simba rekugadzira simenti kiln, tembiricha yekudziya flue valve yakakosha kune yakachengeteka, ine hupfumi uye inoshanda kushanda kwemarara kupisa simba rekugadzira system, kunyangwe iri diki muhuwandu uye kukosha. Iyo yakanyanya tembiricha flue vharafu yemarara kupisa magetsi ekugadzira simenti system yakasiyana neiyo general thermal power plant. Iko hakuna matambudziko ekupisa tembiricha deformation uye kupfekwa kweguruva kweplate yakakura mune thermal power plant. Kazhinji kushandisa Q235 simbi plate welding, uye ukobvu hwakanyanya kutetepa, kazhinji pazasi 6mm. Kana iyi vharafu ichishandiswawo mumarara ekupisa magetsi ekugadzira hurongwa, inosungirwa kukonzera yakafara ndiro deformation, yakanamatira, bypass leakage rate yakakura, inoparadza yakawanda yekupedza gasi zviwanikwa panguva imwe chete, mutemo wekuita hauna kunaka. SP furnace bypass valve kune yega yega 1% yekudonha kwemhepo, kubuda kwemagetsi kwakadzikira ne0.6%, saka inofanirwa kunyatsodzorwa, magadzirirwo anodikanwa ekubypass yakafara air leakage rate ye1%, yakakura haifanirwe kudarika 1.5%, asi mamiriro chaiwo. yakakura zvikuru kupfuura 1.5%, vamwe vanosvika 5%. Kuwedzera kweyero yekuvuza yeAQC choto chekuvhara vharafu kuchaderedzawo kunaka kweflue gasi.
Nekukwikwidza kuri kuwedzera kunotyisa mumusika wekupa simende tsvina yekupisa magetsi ekugadzira vharafu, sechinhu chisiri chemazuva ese, mhando yezvigadzirwa zvepamusoro tembiricha yeflue valve haina kuenzana, uye vamwe vachaonda nemaune kukora kwemuviri wakafara uye ndiro yakafara. . Kunyangwe imwe yakafara shaft iri 20 boiler simbi, nguva yakareba ichasakara kusvika pakufa. Pamusana penzvimbo yakakwirira yekuisa, kutenderera kwenguva refu uye mari yekufambisa yepamusoro yevhavhavha yegesi, mari yekutsiva valve yakakura, saka inofanira kusarudzwa maererano nekugadzirwa kwekombiyuta yevhavha [1]. Iye zvino munyori pane dzinoverengeka tsvina kupisa chizvarwa system vharafu kugadzika uye kugadzirisa ruzivo. Pfupiso yekusarudzwa kwevhavha uye kuiswa.
1, yakakwirira tembiricha flue vharafu kusarudzwa
1.1 iyo AQC vharafu yevira
(1) vharafu inopinza
Ivhavha inopinza yakaiswa pakati pekubuda uye kamuri yekugadziriswa ye grate inotonhorera. Zvinotarisirwa kuti valve ine maitiro akanaka ekugadzirisa uye kushanda kwakavimbika kugadzirisa hutsi hwehutsi hwekubuda kwe grate cooler. Iyo tsvina yekupisa chizvarwa inowanzoitwa pamberi peiyo grate inotonhorera. Iyo tembiricha yekugadzira i300 ~ 360 ℃, uye inogona kusvika kupfuura 450 ℃ kana tembiricha yakakwira. Panguva imwecheteyo, iyo gasi yepakati ye grate inotonhorera ine clinker guruva neconcentration kwete kupfuura 30mg/m3 (yakajairwa). Kumhanya kunowanzo 8 ~ 15m/s. The scour force pavharuvhu ndiro yakakura kwazvo. Nokudaro, ndiro yevhavha inodiwa kuti ive nekudzivirira kupfeka kwakanaka pakupisa kwepamusoro kuti uvandudze hupenyu hwebasa revhavha.
Iyo valve inogona kusarudzwa kutenderera kana mativi zvichienderana nemamiriro chaiwo, uko tembiricha haina kugadzikana, uye ukobvu hweiyo grate inotonhorera mubhedha inokanganisa zvakananga shanduko yekupisa gasi tembiricha. Zvinoenderana nemushandisi, tembiricha pano ingangoita 450 ℃ kwenguva yakareba, asi dzimwe nguva ingangoita 650 ℃, uye inogona kuchengetedzwa kweinenge 2h. Mahwendefa evhavha ane tembiricha yekugadzira ≤450 ℃ ichagadzirwa ne16Mn kana No. 20 boiler simbi. Mahwendefa evharuvhu ane tembiricha yekugadzira ≥600℃ akagadzirwa ne304 simbi isina tsvina. Izvo zvinhu zviviri zveplate yevharuvhu pane yakakwirira tembiricha michina zvimiro zvinenge kwete, tisingatauri zvakanaka kupfeka kuramba. Kuburikidza nekushanya kwesaiti uye mhinduro yemushandisi, tinoziva kuti kana tembiricha isingapfuure dhizaini renji, hupenyu hwesevhisi huzhinji ndeye 1-2 makore, kana tembiricha yakapfuura dhizaini yekugadzira, hupenyu hwebasa iri ** hafu yegore. Naizvozvo, ndiro yevharuvhu inofanirwa kushandisa welding degree tortoiseshell mesh, flexural jekiseni ine yakakwira tembiricha yechimiro simba, yakaderera tembiricha inokambaira, kudiki kwekuwedzera kwemafuta, kupikisa kwakasimba kukukurwa kwemakemikari, kupisa kwekutyisa kuramba uye zvimwe zvakanakira zveflexural jekiseni zvinhu, mushure mekupisa kwakanyanya kubikwa. kurapwa kune kwakasimba kwekushisa kwekushisa kwepamusoro uye kupfeka kusagadzikana, kuwedzera hupenyu hwebasa. Kudzivirirwa kwemwaranzi yekupisa kunogona kuwanikwa nekurebesa shaft yeyama uye welding simbi yakatetepa ndiro pakati peiyo actuator nevharuvhu yekubatanidza tsvimbo.
Sarudzo yevharuvhu:
Chimiro fomu: louver type;
Kubatanidza fomu: butt welding, flange;
Leakage rate: 1.5% ~ 2%;
Inokodzera kudzvinyirira kwepakati: 0.1MPa;
Body material: No. 20 boiler steel lining heat insulation material uye yakakwirira tembiricha uye kupfeka kuramba torsion jekiseni zvinhu;
Valve plate quality: No. 20 boiler simbi lining high tembiricha uye kupfeka kuramba castable kana ≤450 ℃, 304 Stainless simbi lining tembiricha uye kupfeka isingachinjiki jekiseni zvinhu kana ≥600℃;
Yan shaft zvinhu: 2crl3, 304 simbi isina tsvina.
Ukobvu hwekukandwa hunofanira kuratidzwa kune mugadziri wevhavha kana pombi yakavharwa neinochinjika yekuzadza zvinhu. Kuti udzivise vharafu yakaiswa mushure mevhavha ndiro yarova pombi torsion jekiseni zvinhu uye haigone kuvhurwa. Muviri WEVVALVE uchaputirwa nehukobvu hwakafanana hwekuvharisa uye abrasion resistant flex material sepombi. Zvakanakira izvi ndezvekuti kuyerera hakuna mhirizhonga. Dzivisa kuputika kukuru kwemuviri uye disc nemhepo inobuda. Iyo insulation layer uye kupfeka-inodzivirira flexure feed inoderedza kupisa kwekupisa kwemuviri wevharuvhu.
(2) Bypass valve uye inotonhora yemhepo valve
Iyo bypass valve iri pakati pemuswe weiyo grate inotonhorera uye electrostatic precipitator, uye inotonhora yemhepo valve iri pamberi pekamuri yekugadzika yemhepo inotonhora. Iyo yakasara tembiricha yemhepo yehuni yemusoro inochinja zvakanyanya (180 ~ 500 ℃), nguva yekuchinja ipfupi, uye bypass inodzora vharafu inoshanda kazhinji. Kana kugadzirwa kweutsi kwechoto kwemusoro kwakakurisa, tembiricha yemhepo inopisa kwazvo inodonha, uye nzira yekupfuura inoronga Yan inovhurwa kudzikisa hutsi hwehutsi hwebhailer muchoto musoro. Ita shuwa system kugadzikana. Kunyangwe tembiricha yeAOC choto chemoto inopfuudza gasi isina kukwira, chiyero chekuvuza chevharuvhu chinowedzera mushure mekunge chakwizwa uye kupfekwa neguruva re clinker. Muzviitiko zvakakomba, ndiro yevhavha inodonha, zvichikonzera kudonha kwakanyanya kwemhepo muhurongwa, zvichikonzera kudzikiswa kwekubuda kweAOC vira. Kana kutonhora kweutsi hunotengeswa kunze kwakanyanyisa, mhepo inotonhora inowedzerwa kukamuri yekugadzirisa kuburikidza nevhavha yemhepo inotonhora. Iyo valve haizosakara, asi chiyero chekudonha chakakura, izvo zvinoderedza kunaka kweiyo flue gasi. Nokudaro, mavharuvhu maviri aya anoda chisimbiso chakanaka.
Chimiro chechimiro: ndiro imwe chete, louver type;
Kubatanidza fomu: butt welding, flange;
Leakage rate: single plate 1%, shutter type 1.5% ~ 2%;
Inokodzera kudzvinyirira kwepakati: 0.1Mpa;
Kupisa kwebasa: ≤450℃;
Muviri zvinhu: Nhamba 20 boiler simbi;
Valve plate quality: 16Mn;
Valve shaft zvinhu: 20Crl3.
Zvinokurudzirwa kushandisa single plate valve plate (iyo shutter type leakage rate yakakwira), uye kuvandudza kurongeka kwekugadzirisa, chiyero chekuvuza chinodzorwa mukati me1%, iyo bypass valve inofanirwa kusimbisa kusapfeka uye kusagadzikana kwekuora, kuderedza mhepo yekupfuura. vhoriyamu yekudonha kana bhailer iri kushanda.
(3) vharafu yekubuda nayo
Ivhavhavha yekubuda iri pakati pechoto uye electrostatic precipitator, uko tembiricha yekubuda gasi kazhinji iri pazasi 360 ℃, tembiricha inoshanduka idiki, guruva rinopfeka harina simba, uye kuvhura nekuvhara kwevharuvhu kushoma. Mumamiriro ezvinhu akajairika, iri munzvimbo yakazaruka, apo AQC choto chekuchengetedza, valve yakavharwa. Ivhavha inoda kushanda kwekuvhara kwakanaka kana yakavharwa kuti ive nechokwadi chekuchengetedza boiler uye kuchengetedzwa kwevashandi.
Fomu yevhavha: kuisa ndiro;
Kubatanidza fomu: butt welding, flange;
Leakage rate: ≤0.5%;
Inokodzera kudzvinyirira kwepakati: 0.1Mpa;
Kupisa kwebasa: 330 ~ 450 ℃;
Muviri zvinhu: Nhamba 20 boiler simbi;
Valve plate quality: 16Mn:
Valve shaft zvinhu: 20Crl3.
Ivhavha yakagadzirwa sevhavha yevhavha dhizaini, mudziyo wekutumira uchishandisa sprocket mhando, kudzivirira vharafu nekuda kwekuunganidzwa kwemadota kunokonzerwa nekuvhura kwevharuvhu uye kuvhara kwevhavha plate deformation, dzinde kukotama kana kupisa kutadza kwemagetsi actuator. Izvo zvinofanirwa kucherechedzwa kuti seti yemanyorero plug valve uye yakasimba impeller feeder inofanirwa kuiswa pakati pekamuri yekugadzika uye zipi muchina kudzivirira huwandu hukuru hweguruva hwakaunganidzwa panguva yekumisa bhailer. Pano tembiricha yakakwira kusvika 450 ℃, saka iyo impeller feeder valve muviri uye mota yekubatanidza modhi inobatanidzwa nekubatanidza, kuitira kudzivirira bhini kuti rirege kuwira mumutumbi wekunze wakanamira mune yekuburutsa impeller. Mumota yekutsva, iyo yakaoma overload yekudzivirira mudziyo inoshandiswa kutsiva pini yekuchengetedza muchigadzirwa. Panguva imwecheteyo, goko riri pamusoro peimpeller rine maburi ekuongorora, shaft yevhavha yakarebeswa, kutakura kuri kunze, uye gomba rekuwedzera rinowedzerwa, kuitira kuderedza kukanganisa kunokonzerwa nezvinhu zvakanamatira uye kupisa kwakanyanya.
(4) superheater valve
Ivhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhuvhuvhuro inowanzoiswa pakati pemberi kumberi kwegireti inotonhorera uye superheater,papo tembiricha yekubuda gasi inowanzoita 500~650℃, uye guruva riri 30mg/m3(standard). Parizvino, dhipatimendi rekugadzira rinowedzera kushoma superheater dhizaini.
Iyo yakajairika dhizaini yevharuvhu yakasimudzwa, ndiro yevharuvhu i304 simbi isina tsvina. Zvinoenderana nevashandisi, tembiricha pano inonyanya kuchengetedzwa pa650 ℃, uye kazhinji, inogona kusvika 900 ℃. Nekuti vharuvhu iri pasi petembiricha yegesi yeflue, kukora uye kukukurwa kwakanyanya kwakashata. Hupenyu hupfupi kwazvo hwebasa. Naizvozvo, muviri wevharuvhu unofanirwa kudururwa nezvinhu zvekudzivirira kupisa uye zvinokandwa zvehukobvu hwakafanana nepombi kuti ive nechokwadi chekuti kuyerera kwemhepo hakuna mhirizhonga. Hunhu hweplate yevharuvhu hwakaderera, uye 304 kaviri-sided welding tortoise shell mesh inofanira kushandiswa kukanda tembiricha yepamusoro uye kupfeka kusagadzika kunokandwa kuti ive nechokwadi chekutonga kushanda kwevhavha uye yakajairika kushanda kweiyo linker yekugadzira mutsara.
Valve fomu: louver type;
Kubatanidza fomu: butt welding, flange;
Leakage rate: 1.5% ~ 2%;
Inokodzera kudzvinyirira kwepakati: 0.1MPa;
Kupisa kwebasa: 450 ~ 650 ℃;
Body material: No. 20 boiler steel lining heat insulation material uye yakakwirira tembiricha uye kupfeka kuramba castable;
Plate yevhavha: 304 simbi isina tsvina yakamisikidzwa nekushisa kwakanyanya uye inopfeka inodzivirira castable;
Fujian shaft zvinhu: 304 simbi isina tsvina.
Nguva yekutumira: Oct-14-2022
