Good Quality Double Tube Sheet Heat Exchanger

Kodi ubwino ndi kuipa kwa zipolopolo ndi chubu kutentha exchanger ndi chiyani?

Chigoba ndi chubu heat exchanger (STHE), chimodzi mwa zida zosinthira kutentha zomwe zimagwiritsidwa ntchito kwambiri m'mafakitale, zimakhala ndi njira ziwiri-zoyendera zopangira "mbali ya zipolopolo" (pomwe madzi amayenda pakati pa chipolopolo ndi chubu) ndi "mbali ya chubu" (pomwe madzi amayendera mkati mwa chubu). Ngakhale ubwino wake waukulu uli kukhazikika, kusinthasintha, ndi kudalirika, zolepheretsa zina zimakhalapo chifukwa cha mawonekedwe ake. Kusanthula uku kuwunikanso mphamvu ndi zofooka izi mwatsatanetsatane, ndi zochitika zenizeni zomwe zikuwonetsa malire awo ogwirira ntchito:

Ubwino wa zipolopolo ndi ma chubu osinthanitsa kutentha ndi chifukwa cha kapangidwe kake kolimba komanso kapangidwe kake kokhwima, makamaka koyenera kuthamanga kwambiri, kutentha kwambiri, kutuluka kwakukulu ndi zovuta zina zogwirira ntchito, zomwe zitha kufotokozedwa mwachidule ngati mfundo 5:

1. Kuthamanga kwakukulu ndi kulekerera kutentha kwakukulu, kukhazikika kwapangidwe

The chipolopolo chubu mtundu chipolopolo (kawirikawiri mpweya zitsulo, zitsulo zosapanga dzimbiri kapena aloyi zipangizo) ndi kutentha kuwombola chubu (monga zitsulo chitoliro chosapanga dzimbiri, zitsulo zosapanga dzimbiri chitoliro) anapangidwa ndi khoma wandiweyani, amene angathe kupirira kuthamanga ntchito (mpaka 30MPa) ndi osiyanasiyana kutentha osiyanasiyana (-200 digiri ~ 1000 digiri ), ndipo si kophweka deform chifukwa cha kugwedezeka kapena kugwedezeka fluctu.

Mwachitsanzo, m'munda wa makampani petrochemical, chipolopolo ndi chubu kutentha exchangers ntchito chothandizira akulimbana mayunitsi akhoza kupirira kutentha pamwamba madigiri 400 ndi kuthamanga pamwamba 10MPa kwa nthawi yaitali, ndi kulephera ntchito mlingo ndi wotsika kuposa mitundu ina ya exchangers kutentha (monga mbale kutentha exchangers).

2. Large processing otaya, oyenera kufunika mafakitale sikelo

Chubu bundle ikhoza kupangidwa ngati "multi-chubu process" (monga 2-process, 4-process), ndipo ndondomeko ya zipolopolo imatha kupititsa patsogolo kugawa madzi kudzera m'mbale za baffle. Malo otengera kutentha kwa chipangizo chimodzi amatha kufika mamita zikwizikwi, omwe amatha kukwaniritsa zofunikira zotumizira kutentha kwamadzimadzi akuluakulu otaya (monga condenser mumagetsi opangira magetsi ndi kutentha kwa madzi ozizira muzitsulo zazikulu za firiji).

Kuyerekeza: chosinthira kutentha kwa mbale chimachepa ndi malo a mbale, malo osinthira kutentha kwambiri pagawo limodzi nthawi zambiri saposa 1000㎡, pomwe chipolopolo ndi chubu zimatha kudutsa 5000㎡, zomwe ndizoyenera kwambiri-zikuluzikulu zamafakitale monga makampani opanga mankhwala ndi mphamvu zamagetsi.

3. Kusinthasintha kwamadzimadzi ndikokulirakulira, kumagwirizana ndi media zovuta

Itha kugwiritsidwa ntchito pothandizira kukhuthala kwakukulu, tinthu tating'onoting'ono komanso madzi osavuta kuyeza (ayenera kuphatikizidwa ndi mapangidwe apadera, monga chubu chachikulu chosinthira kutentha, anti-kutsekeka):

Kwa madzi a viscous (monga mafuta obiriwira, mafuta opaka mafuta), chipolopolo cha mbali ya chipolopolo chimatha kuswa malire amadzimadzi ndikuchepetsa kusunga;

Pamadzimadzi okhala ndi tinthu tating'ono tolimba (monga zamkati, madzi otayira), mutha kusankha chitoliro chowoneka bwino cha φ25mm kapena kupitilira apo kuti mupewe kutsekeka;

Chowotcha kutentha kwa mbale ndichosavuta kutsekedwa ndi tinthu tating'onoting'ono kapena tinthu tamadzi ta viscous chifukwa cha kusiyana kochepa pakati pa mbale (nthawi zambiri 2 ~ 5mm), ndipo kusinthika kwake ndikotsika kwambiri kuposa chipolopolo ndi chubu.

4. Mtengo wotsika wokonza komanso kukonza bwino

Zambiri za zipolopolo ndi zotenthetsera machubu (monga mtundu woyandama wa mutu, U-mtundu wa chubu) zitha kuchotsedwa kwathunthu, kuti chubu ndi zipolopolo zitsukidwe ndi makina (monga kuyeretsa kwambiri-kuyeretsa jeti lamadzi) kapena kusintha machubu otenthetsera owonongeka, osaphatikiza zida zonse;

Mwachitsanzo, zoziziritsa kukhosi zamakampani zimasungidwa miyezi isanu ndi umodzi iliyonse. Chipolopolo chamutu choyandama chimangofunika masiku 1-2 kuti amalize kutulutsa mtolo, kuyeretsa ndikukhazikitsanso, pomwe chowotcha chotenthetsera chimayenera kusokoneza mbale mazana ambiri, ndipo kukonzanso kumakhala kwa masiku 3-5.

5. Njira yopangira okhwima komanso mtengo wowongolera

Zigawo zazikulu za chipolopolo ndi chubu (chipolopolo, chubu, chubu pepala) ndizokhazikika, palibe chifukwa cha nkhungu zovuta, ndipo kusankha kwa zinthu kumakhala kosavuta (mpweya wa kaboni, chitsulo chosapanga dzimbiri, titaniyamu alloy, ndi zina zotero), malinga ndi momwe ntchito ikugwiritsidwira ntchito kuti ifanane ndi ndalama zambiri -chiwembu chogwira ntchito;

Kuyerekeza: osinthanitsa kutentha kwapang'onopang'ono (monga mbale ya spiral, chipolopolo cha mbale) nthawi zambiri amakhala 20% ~ 50% pamtengo wopangira kuposa chipolopolo ndi ma chubu osinthanitsa kutentha omwe ali ndi malo omwe amatengera kutentha chifukwa cha mawonekedwe awo ovuta komanso mawonekedwe apamwamba.

Kuipa kwa chipolopolo ndi chubu ndi chifukwa cha mawonekedwe ake "osakhala-kutuluka kwamadzi amtundu wa chipolopolo" ndi "mapangidwe otayirira", omwe ali ndi zolakwika zowonekeratu zomwe zimafunikira kwambiri pakutengera kutentha komanso kugwiritsa ntchito malo. Mwachindunji, zitha kufotokozedwa mwachidule ngati mfundo 4:

1. Kugwiritsa ntchito kutentha kochepa komanso kugwiritsa ntchito mphamvu zambiri

Chigoba chamadzimadzi cham'mbali chimatsekedwa ndi baffle, chomwe chimakhala chosavuta kupanga "dead zone" (malo osungira madzi), ndipo kuchuluka kwa madzi kumakhala kotsika kwambiri kuposa mbali ya chubu (nthawi zambiri 0.5~2m/s), zomwe zimapangitsa kuti mbali ya chipolopolo ikhale yotsika kutentha (pamene madzi{2}}kusintha kutentha kwamadzi, kuchuluka kwa kutentha kwapakati kumakhala kokwana W·~000/~00/m²000)(m²00000)(m²000) (m²000)

Kuyerekeza: mbale kutentha exchanger chifukwa madzimadzi pakati pa mbale ndi chipwirikiti (otaya mlingo 1 ~ 3m/s), okwana kutentha kutengerapo koyefishienti angafikire 3000 ~ 6000 W/(m²· digiri), pansi pa kutentha chomwecho kufunika kuwombola, chipolopolo ndi chubu kugwiritsa ntchito mphamvu ndi 15% ~ 30% apamwamba kuposa mbale.

2. Kukula kwakukulu ndi kugwiritsa ntchito malo otsika

Chifukwa cha kutsika kwa kutentha kocheperako, kuti akwaniritse kutentha komweko, chipolopolo ndi chubu zimafunikira malo osinthira kutentha, zomwe zimapangitsa kuti voliyumu ya zida ndi kulemera kwake kukhale kokulirapo kuposa chophatikizira kutentha;

Mwachitsanzo, kuti tikwaniritse kutentha kutengerapo katundu 1000kW, buku la chipolopolo ndi chubu ndi za 20 ~ 30m³, pamene mbale amangofunika 5 ~ 8m³, kotero chipolopolo ndi chubu si oyenera malo ochepa zochitika (monga chipinda choyera mankhwala, sitima kutentha kuwombola dongosolo).

3. Kuyeretsa zipolopolo ndikovuta komanso kosavuta kukulitsa magwiridwe antchito

Ngakhale mtolo wa chubu ukhoza kuchotsedwa, zimakhala zovuta kuyeretsa mkati mwa chipolopolocho (makamaka kusiyana pakati pa baffle ndi chipolopolo, ndi malo opapatiza pakati pa mitolo ya chubu). Ngati madzi osavuta kuyeza (monga madzi olimba ndi zodetsedwa{1}}okhala ndi madzimadzi) akonzedwa, chipolopolocho chidzakhuthala ndipo mphamvu yotumiza kutentha idzachepa (kutentha kumachepa ndi 10% ~ 15% pakuwonjezeka kwa 1mm kulikonse);

Poyerekeza: zonse-zowotchera mbale zotenthetsera sizingathe kuyeretsa malo mu chipolopolo kudzera pa makina a CIP (oyeretsa pa intaneti), ndipo vuto la makulitsidwe ndilocheperapo kuposa la mtundu wa zipolopolo.

4. Kuchuluka kwa chipukuta misozi ndi kutentha komwe kumasiyanasiyana

Mu chipolopolo chokhazikika cha chubu ndi mtundu wa chubu (mtundu wosavuta kwambiri), pepala la chubu limalumikizidwa mwamphamvu ndi chipolopolo. Ngati kusiyana kwa kutentha pakati pa chubu ndi kutuluka kwa chipolopolo kuli kwakukulu kwambiri (monga madigiri oposa 50 ), chubu chipolopolo chidzatulutsa kupsinjika kwa matenthedwe chifukwa cha kusiyana kwa matenthedwe owonjezera, zomwe zingayambitse mapindikidwe a pepala la chubu kapena kutayikira kwa chubu chosinthira kutentha, kotero m'pofunika kukhazikitsa "kuwonjezera olowa" kuti mulipidwe;

Ngakhale mtundu wa mutu woyandama ndi U{0}}mtundu wa chubu ukhoza kuthetsa vuto la chipukuta misozi cha kutentha, kapangidwe kake ndi kovuta kwambiri (mtengo wake umakwera ndi 15% ~ 20%), ndipo kuyeretsa chubu la U-mtundu wa chubu kumakhala kovuta (mbali yamkati ya U{4}}chubu sichitha kukhudzidwa).

Shell ndi chubu heat exchanger si "zonse-zida zopangira", kusankha kwake kuyenera kuphatikizidwa ndi kufunikira kwa malo ogwirira ntchito:

● Zosankha zofunika kwambiri:kuthamanga kwambiri ndi kutentha kwakukulu (monga petrochemical reaction heat exchange exchange), kutuluka kwakukulu (monga makina opangira magetsi), tinthu tating'onoting'ono tamadzimadzi (monga kuzirala kwa zamkati), zochitika zamakampani zomwe zimakhala ndi zofunikira zothandizira kukonza;

● Sankhani bwino lomwe chochitikacho:malo ochepa (monga malo ochitirako ukhondo), zofunikira zogwiritsira ntchito mphamvu zochepa (monga kutentha kwapachiweniweni), zosavuta kukula komanso kuyeretsa pafupipafupi (monga chakudya ndi zakumwa zoziziritsa kukhosi) zithunzi (mbale zovomerezeka kwambiri, mbale zozungulira ndi zina zophatikizira kutentha).

Mwachidule, zipolopolo ndi chubu kutentha exchangers ndi "osewera odalirika" m'munda mafakitale ndi Irreplaceable mu zovuta ndi nkhanza ntchito zinthu, koma ayenera kupereka njira yabwino kwambiri zipangizo kutentha kuwombola pofuna dzuwa mkulu ndi compactness.

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