Li-Heat Exchangers ke eng?

Lentsoe "mocheso" le sebelisoa ho hlalosa sesebelisoa se nolofatsang ho fetisetsa mocheso ho tloha mokelikeli o mong ho ea ho o mong ntle le ho kopanya tse peli. E na le litsela kapa litsela tse peli tse fapaneng, e 'ngoe ke ea mokelikeli o chesang le e' ngoe bakeng sa mokelikeli o batang, o lulang o arohane ha o futhumatsa. Mosebetsi o ka sehloohong oa mochine o futhumatsang mocheso ke ho matlafatsa matla a matla ka ho sebelisa mocheso o litšila, ho baballa lisebelisoa le ho fokotsa litšenyehelo tsa ts'ebetso.

Mefuta e Tloaelehileng ea Licheso tsa Mocheso
Shell le li-tube heat exchangers:Ena ke mefuta e atileng haholo ea li-heaters tsa mocheso tse sebelisoang lits'ebetsong tsa HVAC tsa khoebo. Li na le letoto la li-tubes tse kentsoeng ka har'a khetla. Mokelikeli o chesang o phalla ka har'a li-tubes ha mokelikeli o batang o potoloha li-tubes ka har'a khetla, o lumella phapanyetsano e sebetsang ea mocheso.

Lisebelisoa tsa mocheso oa poleiti:Lisebelisoa tsa mocheso li sebelisa lipoleiti tsa tšepe tse ngata tse nang le libaka tse phahamisitsoeng le tse tepeletseng maikutlo. Metsi a chesang le a batang a phalla ka litsela tse arohaneng tse entsoeng ke likheo pakeng tsa lipoleiti, ho eketsa mocheso oa mocheso ka lebaka la sebaka se seholo sa holim'a metsi.

Licheso tsa moea ho ea moeeng:E boetse e tsejoa e le likarolo tsa ho khutlisa mocheso, li-exchanger tsena tsa mocheso li fetisetsa mocheso pakeng tsa ho ntša le ho fana ka metsi a moea. Li tlosa mocheso moeeng oa khale ebe li o fetisetsa moeeng o hloekileng, ho fokotsa tšebeliso ea matla ka ho lokisa moea o kenang pele.

Tšebeliso ea Liindasteri ea Shell le Tube Heat Exchanger ke Efe?
Tšebeliso ea indasteri ea likhetla le li-heaters tsa mocheso oa tube, tse sebelisoang lik'hemik'hale, lijo, oli le khase le masimo a mang, li atile. Hangata ba sebelisoa liindastering tse fapaneng bakeng sa ho fetisetsa mocheso pakeng tsa maro a mabeli ntle le ho kopana ka ho toba. Tse ling tsa lisebelisoa tsa bohlokoa tsa indasteri ea likhetla le li-tube heat exchangers li kenyelletsa:

Mekhoa ea ho futhumatsa le ho pholisa limela tsa lik'hemik'hale
Ho fokotsa le ho etsa mouoane litsing tsa ho hloekisa
Mekhoa ea ho tsosolosa mocheso libakeng tsa ho fehla matla
Sistimi ea HVAC meahong ea khoebo le ea bolulo
Mekhoa ea lihatsetsi lifemeng tsa ho lokisa lijo
Tsamaiso ea mocheso litsing tsa tlhahiso ea oli le khase
Ka kakaretso, likhetla le li-heaters tsa mocheso li bapala karolo ea bohlokoa ho ntlafatsa ts'ebetso ea mocheso le ho boloka taolo ea mocheso ho pholletsa le mekhoa e mengata ea indasteri.

Ke Mefuta e Me kae ea Shell le Tube Heat Exchanger?
Ha e le hantle, ho na le mefuta e meraro ea mantlha ea likhetla le li-heaters tsa mocheso tse sebelisoang hangata:

1. Fixed Tube Sheet Exchanger (L, M, le N Type Rear Headers)
Moqapi ona, letlapa la tube le cheselitsoe ho khetla, e leng se hlahisang kaho e bonolo le ea moruo. Le hoja li-tube bores li ka hloekisoa ka mochine kapa ka lik'hemik'hale, likarolo tse ka ntle tsa li-tubes hangata ha li fumanehe ntle le ho hloekisa lik'hemik'hale. Ho ka 'na ha hlokahala hore ho atolosoe melumo ho amohela phapang e khōlō ea mocheso pakeng tsa khetla le lisebelisoa tsa tube, empa e ka ba mohloli oa bofokoli le ho hlōleha.

2. U-Tube Exchangers
Ho U-Tube exchanger, mefuta ea lihlooho tse ka pele e ka fapana, 'me hlooho e ka morao hangata ke mofuta oa M. Li-U-tubes li lumella ho atolosoa ha mocheso o sa lekanyetsoang, 'me sekoti sa tube se ka tlosoa bakeng sa ho hloekisa. Leha ho le joalo, ho hloekisa ka hare ho li-tubes ka mekhoa ea mechine ho thata, ho etsa hore mofuta ona o tšoanelehe feela bakeng sa likopo moo metsi a lehlakoreng la tube a hloekileng.

3. Floating Head Exchanger (P, S, T, le W Type Rear Headers)
Mofuteng ona oa phapanyetsano, tubesheet e qetellong ea hlooho e ka morao ha e chesehe ho khetla empa e lumelloa ho tsamaea kapa ho phaphamala. Letlapa la tubesheet le qetellong ea hlooho e ka pele le bophara bo boholo ho feta khetla 'me le tiisitsoe ka mokhoa o ts'oanang le moralo o tsitsitseng oa tubesheet.

Katoloso ea mocheso e ka amoheloa, 'me sekoti sa tube se ka tlosoa bakeng sa ho hloekisa. S-Type Rear Head ke khetho e tsebahalang haholo bakeng sa hlooho e ka morao. Liphapanyetsano tsa hlooho tse phaphametseng li loketse mocheso o phahameng le likhatello empa ka kakaretso li theko e boima haholo ha li bapisoa le li-exchange exchange tsa tubesheet tse tsitsitseng.

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Likarolo tsa khetla le mochini oa mocheso oa tube li ka aroloa ka likarolo tse latelang:

1. Khetla
Khetla ke karolo e ka ntle ea mochini o futhumatsang mocheso o ts'oereng thipu. Hangata ke sejana sa cylindrical se entsoeng ka tšepe kapa lintho tse ling tse loketseng

2. Li-tubes kapa Tube Bundle
Pokello ea li-tubes tse bapileng tse tsamaeang ka bolelele ba khetla li etsa sephutheloana sa tube. Ho itšetlehile ka tšebeliso e khethehileng, li-tubes li ka etsoa ka lisebelisoa tse fapaneng, tse kang tšepe e sa hloekang, koporo kapa titanium. Bophara le botenya ba li-tubes le tsona ke litekanyo tsa bohlokoa tsa moralo.

3. Li-Tube Sheets
Lipampiri tsa li-tube ke lishiti tse tiileng tse sebetsang e le mokoallo pakeng tsa kutu le khetla. Hangata li hahoa ka tšepe 'me li kopanngoa le khetla ho netefatsa hore ho koaloa ho tiileng le ho se nang ho lutla. Li-tubes li kenngoa ka masoba ka har'a maqephe a li-tubes 'me li ka atolosoa kapa li cheselitsoe boemong.

4. Baffles
Li-baffles ke lipoleiti kapa lithupa tse kentsoeng ka har'a khetla ho laola motsamao oa mokelikeli ho pota-potile thipa. Tsena e ka ba tsa longitudinal kapa tse pharallanang ka mokhoa oa ho shebana 'me li reretsoe ho matlafatsa katleho ea ho fetisa mocheso.

5. Li-Nozzles tse kenang le tse tsoang
Li-nozzles tse kenang le tsa ho tsoa li sebetsa e le sebaka sa ho kena le ho tsoa bakeng sa maro a ka har'a mochini oa mocheso. Hangata likhokahano tsena li behoa lipheletsong tse fapaneng tsa khetla 'me li khomaretsoe ho li-tubes le khetla ho sebelisa li-flange kapa mefuta e meng ea li-fittings.

6. Katoloso Manonyeletso
Manonyeletso a katoloso ke lihokelo tse tenyetsehang tse amohelang katoloso le ho honyela ha mocheso oa tube bundle. Hangata a lutse moo ho kenang le ho tsoa ha mochini o futhumatsang mocheso, manonyeletso ana a hahiloe ka metsu ea tšepe kapa lisebelisoa tse ling tse tenyetsehang.

7. Mehaho ea Tšehetso
Mehaho ea ts'ehetso e tšoara lisebelisoa tsa mocheso sebakeng, ho netefatsa motheo o tsitsitseng. Mehaho ea tšehetso e ka ba ea nakoana kapa ea ka ho sa feleng 'me e ka etsoa ka tšepe kapa lisebelisoa tse ling.

Shell le tube geometric terminology

Sebopeho sa bophara ba tube le molumo
Li-tubes li ka fapana ka bophara ho tloha ho 12.7 mm (0.5 in) ho ea ho 50.8 mm (2 in), empa 19.05 mm (0.75 in) le 25.4 mm (1 in) ke boholo bo tloaelehileng. Li-tubes li behiloe ka likarolo tse tharo kapa tse sekoere ka har'a maqephe a li-tube.

Likarolo tsa lisekoere lia hlokahala moo ho hlokahalang ho fihla holim'a tube bakeng sa tlhoekiso ea mochini. Tlhophiso ea li-triangular e lumella li-tubes tse ngata sebakeng se fanoeng. Leqhubu la tube ke sebaka se sekhuts'oane ho tloha bohareng ho isa bohareng lipakeng tsa li-tubes. Phapang ea li-tube e fanoa ke karo-karolelano ea tube pitch / tube diameter, eo hangata e leng 1.25 kapa 1.33. Kaha sebopeho sa lisekoere se sebelisetsoa merero ea ho hloekisa, lekhalo le fokolang la 6.35 mm (0.25 in) le lumelloa pakeng tsa li-tubes.

Mefuta e sa tšoaneng
Li-baffles li kenngoa ka lehlakoreng la khetla ho fana ka sekhahla se phahameng sa ho fetisa mocheso ka lebaka la moferefere o eketsehileng le ho tšehetsa li-tubes kahoo ho fokotsa monyetla oa ho senyeha ka lebaka la ho thothomela. Ho na le mefuta e mengata e fapaneng ea baffle, e tšehetsang li-tubes le ho khothalletsa ho phalla ho pholletsa le li-tubes.

Single Segmental (ena ke eona e atileng haholo),

Double Segmental (sena se sebelisetsoa ho fumana lebelo le tlase la khetla le ho theoha ha khatello),

Diski le Doughnut.

Sebaka se bohareng ho ea bohareng pakeng tsa li-baffles se bitsoa "baffle-pitch" 'me sena se ka fetoloa ho fetola lebelo la phallo. Ha e le hantle, sekontiri sa baffle ha se hangata se seholo ho feta sebaka se lekanang le bophara ba ka hare ba khetla kapa se haufi ho feta sebaka se lekanang le karolo ea bohlano ea bophara kapa 50.8 mm (2 in) ho sa tsotellehe hore na ke efe e kholo. E le ho lumella mokelikeli ho phalla morao le pele ho pholletsa le liphaephe karolo ea baffle e khaoloa. Bophahamo ba karolo ena bo bitsoa "baffle-cut" 'me bo lekanngoa ka karolo ea peresente ea bophara ba khetla, mohlala, karolo ea 25 lekholong. Boholo ba "baffle-cut" (kapa baffle fensetere) bo hloka ho nahanoa hammoho le sekontiri sa baffle. Ke ntho e tloaelehileng ho eketsa boholo ba sekhahla sa sekhahla le sekhahla sa sekhahla ho lekana lebelo ka fensetere le ho phalla ka ho latellana.

Moralo oa mochini oa khetla le mochini o futhumatsang mocheso o fana ka leseli ka lintho tse kang botenya ba khetla, botenya ba flange, joalo-joalo Tsena li baloa ho sebelisoa khoutu ea moralo oa sekepe sa khatello joalo ka khoutu ea Boiler le Pressure Vessel ho tsoa ho ASME (American Society of Mechanical Engineers) le British Master Pressure Vessel Standard, BS 5500. ASME ke khoutu e sebelisoang haholo bakeng sa lisebelisoa tsa mocheso 'me e likarolong tse 11. Karolo ea VIII (Lijana tsa Khatello e Koaletsoeng) ea khoutu ke eona e sebetsang ka ho fetisisa ho lihlahisoa tsa mocheso empa Karolo ea II-Lisebelisoa le Karolo ea V-Teko e sa Senyeheng e boetse e sebetsa.

Ka bobeli ASME le BS5500 li sebelisoa haholo le ho amoheloa lefatšeng ka bophara empa linaha tse ling li tsitlella hore ho sebelisoe likhoutu tsa naha ea tsona. E le ho leka le ho nolofatsa sena Mokhatlo oa Maemo oa Machabeng joale o leka ho hlahisa khoutu e ncha e amoheloang ke machaba empa ho ka etsahala hore ebe nako e itseng pele sena se amoheloa.