Zvikamu zvinopisa zvinopisa zvinoshanda pasi penguva refu yekutsinhana tembiricha, kudzvanywa kwakasiyana uye kuenderera mberi kwepakati kusangana mamiriro, uko imwe dhizaini chikanganiso, sarudzo isina kunaka yezvinhu kana kukanganisa kukanda kunogona kutungamira kuvharika kusingatarisirwe, kudonha kwepakati uye kudhura kwehurongwa. Kusiyana neyakajairwa kumanikidza midziyo yemidziyo, yakakandwa kupisa inotsinhanisa zvikamu zvinofanirwa kuenzanisa simba rechimiro, kuyerera nzira rationality uye kureba-kureba ngura kuramba panguva imwe chete. Kune mainjiniya ekugadzira, mainjiniya emidziyo uye vanoongorora tekinoroji mumaindasitiri emakemikari, petrochemical, emishonga uye ezvekudya, zvisizvo zvekukandira dhizaini sarudzo dzinowanzo buritsa njodzi dzakavanzika dzisinganyatso kuzivikanwa kunyangwe mushure mekuedzwa kwakajairwa. Iri gwara rakarongeka rinovhara zvakajairwa kukanda dhizaini kusarudzwa nepakati, gating system optimization, zvinodikanwa zvekurapa kupisa, kuongorora kusimba uye matipi anoshanda ekudzora ngura, kuti ikubatsire kudzivirira kutadza kwakajairwa mutsika yekupisa kupisa chikamu chekugadzira.
1. Sei Kukandira Dhizaini Iine Nyaya yeIndasitiri Heat Exchanger Zvikamu
Zvikwata zvakawanda zvekugadzira zvinotanga zvinobata zvinopisa zvinopisa sezvikamu zvakapusa zvemakina uye kukopa yakajairwa dhizaini chikamu dhizaini logic zvakananga, izvo zvinowanzo tungamira kumatambudziko akakomba mukushanda kwekupedzisira. Kanda heat exchanger zvikamu senge chubhu mapepa, inlet/outlet nozzles uye kupatsanurwa magoko haasi kungori tsigiro yezvimiro; iwowo ndiwo muganho wekumanikidza unobata zvakananga process medium. Dhizaini yekukandira isina kunaka inogona kuunza yakavanzika shrinkage porosity, kusaenzana kwemadziro ukobvu uye kusingabviswe kusara kunetseka, izvo zvisingakwanisi kubviswa zvachose kunyangwe neanotevera machining akazara.
Kana ichienzaniswa neyakagadzirwa zvizere zvikamu zvakachekwa kubva kune yakasimba forgings, yakanyatsogadzirirwa kukanda kupisa kupisa zvikamu zvinogona kuumba yakaoma pedyo-net-chimiro kuyerera kuyerera zvimiro mune imwe nhanho yekudurura, zvakanyanya kudzikisa machining vhoriyamu, tsvina yezvinhu uye mutengo wese wekugadzira. Asi mukana uyu unongoshanda chete kana dhizaini yekukanda pachayo ichinyatso funga nezve izvo zvinodiwa zvemidziyo yekutsinhana kupisa. Mamiriro akajairika ekutadza akadai seyenzvimbo yekushushikana kukoromoka kutsemuka pamharadzano yemuromo, kuyerera nzira yekuvharika kunokonzerwa nerasara rekukanda jecha, uye kuvuza pachubhu pepa rekuisa chisimbiso groove, rakadzika midzi mukusanzwisisika kwekukanda dhizaini sarudzo dzakaitwa munhanho yekutanga, kwete gare gare machining zvikanganiso.
2. Yakajairika Cast Structures uye Dhizaini Mitemo yeHeat Exchanger Zvikamu
Iyo inonyanya kushandiswa yakakandwa kupisa exchanger zvikamu mumaindasitiri mapurojekiti anosanganisira tube sheet castings, nozzle flanges, heat exchanger end cover, split flow shells uye shanduko yekubatanidza mabhuroko. Imwe neimwe yeaya akajairwa zvimiro ine yayo yekukanda magadzirirwo ekutanga ayo anokanganisa zvakananga chikamu chekupedzisira kuvimbika.
Kune tube sheet castings, mutemo wakanyanya kukosha ndeyekuchengetedza madziro ukobvu kufanana munzvimbo yese yeplate. Kamwe kamwe zvikamu zvakakora pazvinzvimbo zvebhoti zvinogadzira zviri nyore nzvimbo dzinopisa dzega panguva yekusimba, zvichitungamira kune yemukati shrinkage porosity isingaonekwe kunyangwe neyakajairwa UT yekuongorora mune dzimwe nguva. Makona ese akapinza pajoinhi pakati pebepa rehubhu uye yeperipheral flange anofanirwa kugadzirwa ane yakakwana transition radius, kudzivirira kushushikana pfungwa dzinova mavambo ekuneta kwekupwanya pasi pekudzokororwa tembiricha bhasikoro.
Kune kuyerera kwegomba rekugovera uye kupera kwekuvhara kwekuvhara, iyo yemukati yekuyerera nzira inofanirwa kugadzirwa kudzivirira yakadzika makona akafa ayo asingagoni kucheneswa mushure mekukanda. Zvimedu zvisingabvisiki zvakasara zvekukanda jecha uye zvimedu zvemagoko eceramic zvakasara mukati menzira inoyerera zvichatakurwa mukati mekupisa kwekutsinhana chubhu bundle panguva yekushanda, zvichikonzera kuyerera kuvharika uye kukurumidza kukoromoka kwenzvimbo. Iyo yakawanda yakakurudzirwa yakaderera madziro ukobvu hwekupisa exchanger masisitimu castings haisi pasi pe6mm yezvikamu zvesimbi isina tsvina, uye isingasviki 8mm kune yakakura-chikamu kabhoni simbi yekumanikidza zvikamu. Nzvimbo dzese dzakakosha dzekuisa chisimbiso dzinofanirwa kuchengetedza yakakwana machining mvumo, kuve nechokwadi chekuti yekupedzisira yakapedzwa nzvimbo haiburitse chero kukanganisa kweporosity.
3. Corrosion-Resistant Alloy Selection by Process Medium
Kusarudzwa kwezvinhu zvezvikamu zvekupisa zvinopisa hazvigone kuvimba chete nemabhuku ezvinyorwa zvese; inofanirwa kuenderana neiyo chaiyo inoshanda svikiro, tembiricha, yekutarisa uye yekusachena mwero weiyo chaiyo purojekiti. Kusarudza alloy isiriyo kunogona kukonzera kukanganisa kusati kwasvika mukati menguva pfupi yesevhisi, kana kutungamira kune zvisina kufanira mari yakawanda iyo isingaunze pundutso chaiyo.
3.1 Stainless Simbi Inokanda Zvikamu zvemvura zvakajairika uye midhiya inoodza
Stainless simbi yekukanda zvikamu ndiwo anonyanya kushandiswa zvinhu chikamu chekupisa chinotsinhanisa zvikamu mumvura yakachena, chiutsi, organic solvent uye zvinyoro zvinyoro zvinoodza maindasitiri emvura mamiriro. 304 Stainless steel castings inokodzera tembiricha yakajairwa mvura yakachena uye isingaparadzi yakajairika kupisa masisitimu ekuchinjana, asi haikurudzirwe kumamiriro ebasa apo chloride ion concentration inodarika 50ppm yekugara kwenguva refu ichishanda.
316L uye 316LVM yakaderera-kabhoni-stainless simbi castings inowedzera kunatsiridza pitting kuramba uye intergranular corrosion kuramba, zvichiita kuti ive sarudzo huru kune akawanda akajairwa maindasitiri ekupisa kupisa anobata zvishoma corrosive process media. Pasi pemamiriro ekunze akapfava ekuora, 316L simbi isina tsvina inogona kuchengetedza yakagadzikana yenguva refu kushanda pakuenderera kwekushanda tembiricha inosvika ku300 ° C. Kunyangwe kune 316L, kuratidzwa kwenguva refu kune yakakwira chloride concentration pamusoro pe200ppm patembiricha yakakwira icharamba ichiwedzera zvakanyanya njodzi yekupinza ngura uye kusagadzikana ngura kuputika. Uyu muganho wakajeka wekushandisa unofanirwa kutsanangurwa zvakajeka mudanho rekugadzira, pachinzvimbo chekungowedzera simbi isina tsvina kune ese anoora mamiriro.
3.2 Nickel-yakavakirwa uye yakakwira-alloy sarudzo dzemamiriro ekuora zvakanyanya
Kana iyo svikiro yepakati iine asidhi yakasimba, yakakwira chloride, yakanyanya tembiricha munyu mhinduro kana zvimwe zvakakomba zvinoodza zvinhu izvo zvakajairwa Stainless simbi haigone kumira, nickel-based alloys, duplex Stainless steels uye mamwe alloy alloy-resistant parts anova mhinduro inodiwa. Zvishandiso izvi zvinochengetedza kugadzikana kwekupokana munzvimbo dzakaomarara uko zvakajairwa austenitic simbi isina tsvina inokundikana nekukurumidza.
Mamiriro ekushandisa anosanganisira anochinjanisa kupisa mune yakanyungudutswa sulfuric acid dilution masisitimu, epamusoro-tembiricha brine yekudzoreredza masisitimu uye kemikari process yekuchinjana kupisa mayuniti anobata corrosive organic media. Kunyangwe iyo yekutanga zvinhu uye mutengo wekukanda wepamusoro-alloy heat exchanger components wakakwira zvakanyanya kudarika simbi isina tsvina, hupenyu hwavo hwesevhisi hurefu hunowanzo dzikisa mutengo wehupenyu hwese zvakanyanya, zvichienzaniswa nekutsiviwa kazhinji kwesimbi isina tsvina yakakundikana.
4. Gating System Dhizaini, Kupisa Kurapa uye Tightness Inspection
Kunyangwe iine sarudzo chaiyo yezvinhu uye dhizaini inonzwisisika, kusaita zvakanaka kwekukandira maitiro kunogona kushandura dhirowa inokwanisa kuita chikamu chakaremara chekupisa. Iyo gating system dhizaini yekukandira yekupisa inodziya inofanirwa kuve nechokwadi chekuti nzvimbo yakakosha-inotakura inoomesa zvakatevedzana kubva kumagumo kusvika kune inokwirisa, kudzivirira kuumba ega madziva emvura anoumba yakavanda shrinkage porosity mukati mechikamu. Kune gobvu-section tube sheet castings, kwakaringana saizi yekusimudza uye kutonhora zviyero zvinowanzodikanwa kuti ive nechokwadi chemukati.
Kurapa kwekupisa nderimwe danho risingagone kutaurirana rekukanda kupisa kupisa zvikamu. Stainless simbi inokandwa inofanira kupinda neyakakwana mhinduro kurapwa mushure mekudirwa, kubvisa chromium carbide kunaya pamiganhu yezviyo uye kudzoreredza yakazara intergranular corrosion resistance. Kune hombe yakaoma yekupisa yekupisa ganda castings, yakatsaurwa yekuzorodza yekupisa kurapwa mushure mekuita rough machining inokurudzirwa zvakanyanya, kubvisa iyo yakakura yakasara yekushushikana inounganidzwa panguva yekukanda uye kutonhora. Pasina kugadzikana kwakakodzera kwekunetseka, chikamu chinogona kukanganisa zvakanyanya mushure kupedza kugadzira, kana kutogadzira kutsemuka kusingatarisirwi mushure mekuiswa mubasa.
Kuongororwa kwekusimba ndicho chekupedzisira chakakosha chipingamupinyi chisati chabuda mufekitori. General maindasitiri ekupisa anopisa anopisa anowanzo kudikanwa kuita hydraulic bvunzo panguva 1.5 nguva yekumanikidza dhizaini, uye wozoita muedzo wekusimba kwemhepo pasi pekumanikidzwa kwedhizaini ine nzira yekuona kuvuza. Kune zvinhu zvinopisa zvinopisa zvinoshandiswa muchepfu, zvinobvira kana zvinopindika zvakanyanya, yekuwedzera helium leak bvunzo inowanzodiwa kuti ive nechokwadi chekuti hapana nzira yekudonha diki isingaonekwe neyakajairwa hydraulic test.
5. Stainless Steel vs Nickel Alloy Heat Exchanger Parts: Practical Comparison
Zvikwata zvakawanda zveinjiniya zvinotarisana neyakajairwa sarudzo pfungwa: ingave yekusarudza simbi isina simbi yekukanda zvikamu kana kusimudzira kune nickel alloy heat exchanger zvikamu zveimwe chirongwa. Sarudzo iyi haifanirwe kuitwa chete nekutarisa mutengo wekutanga wekutenga, asi zvakare funga ina mativi makuru: mutengo wezvinhu, kuomerwa kwekugadzira, inotarisirwa hupenyu hwekuora uye kutenderera kwekugadzirisa.
| Kuenzanisa Dimension | Stainless Steel Heat Exchanger Zvikamu | Nickel Alloy Heat Exchanger Zvikamu |
| Chekutanga Material Cost | Yakaderera kusvika pakati, inowanikwa zvakanyanya | Yakanyanya kukwirisa, mbishi yekugovera kutenderera kwakareba |
| Kukandira & Machining Kuoma | Mature process, nyore kudzora | Yakakwira kunyungudika, yakasimba process control inodiwa |
| Corrosion Resistance muMild Medium | Zvakakwana zvakakwana | Kure kupfuura zvinodikanwa chaizvo muzviitiko zvakawanda |
| Corrosion Resistance mune Yakanyanya Medium | High kukundikana njodzi, pfupi sevhisi upenyu | Kugadzikana kwenguva refu kushanda |
| Typical Recommended Scenario | Mvura yakachena, steam, mild organic medium | Asidhi yakasimba, yakakwira chloride, yakanyanya tembiricha inoodza svikiro |
Kune mapurojekiti ane bhajeti shoma uye yakapfava yepakati mamiriro, akakodzera Stainless simbi yekukandira zvikamu zvine chaiyo post-kugadzirisa zvinogona kutowana kuita kwakavimbika kwazvo. Asi pamamiriro ezvinhu ekuora kwakasimba uko simbi isina tsvina haigone kusangana nehupenyu hunodiwa hwekugadzira, kusarudza neupofu simbi kuti uchengetedze mutengo wekutanga kazhinji kunotungamira kumutengo wepamusoro wakakonzerwa nekuvharwa kusingarongedzerwe, tsaona yekudonha uye kazhinji kutsiva chikamu. Muzviitiko izvi, kusimudzira ku nickel alloy corrosion-resistant parts ndiyo yakanyanya hunyanzvi uye yehupfumi sarudzo inonzwisisika.
6. Common Corrosion Control Tips muManufacturing Phase
Matambudziko akawanda anodzivirika ekuora kwezvikamu zvekupisa zvinopisa hazvikonzerwi nekusarudzika kwegiredhi rezvinhu, asi nekubata zvisina kunaka muchikamu chekugadzira. Yekutanga matipi anoshanda ndeyekubvisa zvachose jecha rekukanda rasara, ceramic shell zvinhu uye oxide chiyero kubva mukati nekunze kwekunze mushure mekukanda kudhirowa. Chero yasara silicate yasara pane simbi inopwanya firimu remunharaunda uye ive nzvimbo yekutanga yekukasira pitting corrosion mukushanda.
Chechipiri yakakosha matipi ndeyekubvisa ese akapinza mipendero, maturusi mamaki uye kushushikana kwekutemerwa matanho asara mushure mekugadzira. Kunyangwe kadiki kadiki kakapinza pamusoro pekuvharisa kana kuyerera nzira madziro inogona kuve yekushushikana corrosion initiation poindi pasi pekuita kwakasanganiswa kwekumanikidza kushushikana uye svikiro rinopisa. Iyo yechitatu matipi ndeyekuita kwakaringana passivation kurapwa pane Stainless simbi inopisa kupisa zvikamu mushure mekupedzisira machining. Kufambisa kusina kunaka nekuisa pfungwa kwakashata, nguva isina kukwana yekubata kana kusakwana mushure mekurapwa kushambidza hakuzogadzirise kusagadzikana kwecorrosion, uye zvinogona kutosiya makemikari anoparadza akasara pamusoro ayo anokurumidza kutadza kupera.
7. Mibvunzo Inowanzo bvunzwa
- Q1: Ndeupi hudiki hwemadziro ukobvu hunogona kuwanikwa zvakatsiga kune cast heat exchanger inoyerera nzira maumbirwo?
A: Yezvikamu zvekukanda simbi isina tsvina, iyo yakatsiga yakaderera madziro ukobvu kune yakaoma kupisa inopisa inoyerera nzira maumbirwo anowanzo kutenderedza 6mm. Kune diki diki tsika yekutsinhanisa kupisa, ukobvu hwemadziro kusvika 4mm hunogona kuwanikwa mushure mekunangwa kwekuita optimization, asi izvi zvinofanirwa kusimbiswa padanho rekutanga rekugadzira kudzivirira zvisingaite zvinodiwa. - Q2: Ko zvese zvakakandwa zvinopisa zvinopisa zvinoda 100% yakazara radiographic yekuongorora?
A: Kwete zvose. Chiyero uye chikamu cheyedzo isiri yekuparadza inofanirwa kutariswa zvinoenderana nedanho rekumanikidza, njodzi yepakati uye yakakodzera purojekiti yakatarwa. Kune zvakajairwa zvisina muchetura, zvisingabatike svikiro pakadzika kusvika pakati nepakati, kuongororwa kwesampling kwakavakirwa pazvikamu zvakakosha kunowanzo kugamuchirwa. Asi kune zvinopisa zvinopisa zvinobata zvine njodzi zvakanyanya pakati, yakazara volumetric yekuongorora yeese anomanikidza-anotakura welds uye kukanda nzvimbo dzakakosha zvinodikanwa. - Q3: Ko majekiseni ekupisa anogona kugadzirwa newelding mushure mekuona hurema hudiki hwepamusoro peporosity?
A: Hongu, asi maitiro ekugadzirisa welding anofanirwa kubvumidzwa zvinoenderana neanoenderana anomanikidza emidziyo yakatarwa, uye yakazara post-weld kupisa kupisa uye kudzokororwa kusimba kwekuongorora kunofanirwa kupedzwa mushure mekugadzirisa. Kusadzora kusinga gadziriswe welding kugadzirisa pasina maitiro akakodzera kunounza kutsva kwasara kusagadzikana uye hurema hwakavanzwa hune njodzi kupfuura yekutanga diki porosity.
8. Pfupiso Yekupedzisira
Kuvimbika kwezvikamu zvekupisa zvinopisa hazvitemerwe nenhanho imwe chete, asi mhedzisiro yakasanganiswa yeane musoro dhizaini yekukanda, yepakati-inoenderana nekuora-inodzivirira alloy kusarudzwa, yakagadziridzwa gating system dhizaini, kurapwa kwakaringana kwekupisa uye kuomarara kwekuongorora. Stainless simbi yekukandira zvikamu ndiyo inonyanya kushanda uye inodhura sarudzo kune yakawanda yakapfava kusvika yepakati corrosion maindasitiri mamiriro, nepo nickel-yakavakirwa yakakwira alloy heat exchanger zvikamu zvinopa inodiwa yenguva refu chengetedzo kune yakaoma corrosive mamiriro ekushanda ayo akajairwa simbi isingagone kubata.
Nekutarisisa kune kuenzana kwemadziro, kudzivirira isingabviswe yakasara yekukanda jecha, kubvisa yakapinza yekusimbisa pfungwa uye kuita kwakaringana post-casting passivation kurapwa muchikamu chekugadzira, unogona kudzivirira zvakanyanya zvinowanzoitika nguva isati yakwana kukanganisa. For tsika yekupisa exchanger kukanda mapurojekiti, kuita zvisarudzo zvichibva pakuvimbika kwehupenyu hwakazara pane kungotenga mutengo wekutanga ndiyo nzira inoshanda yekudzikisa kusingatarisirwi kuderera uye mutengo wekugadzirisa mukushanda kwenguva refu kwemaindasitiri.
