CN105509532A - Compact type finned tube bundle for direct air-cooled condenser in power station - Google Patents

Compact type finned tube bundle for direct air-cooled condenser in power station Download PDF

Info

Publication number
CN105509532A
CN105509532A CN201510970186.8A CN201510970186A CN105509532A CN 105509532 A CN105509532 A CN 105509532A CN 201510970186 A CN201510970186 A CN 201510970186A CN 105509532 A CN105509532 A CN 105509532A
Authority
CN
China
Prior art keywords
fin
tube bundle
tube
direct air
finned
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510970186.8A
Other languages
Chinese (zh)
Inventor
杜小泽
徐超
徐鸿飞
杨立军
席新铭
杨勇平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
North China Electric Power University
Original Assignee
North China Electric Power University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by North China Electric Power University filed Critical North China Electric Power University
Priority to CN201510970186.8A priority Critical patent/CN105509532A/en
Publication of CN105509532A publication Critical patent/CN105509532A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/30Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being attachable to the element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00Constructions of heat-exchange apparatus characterised by the selection of particular materials

Abstract

The invention belongs to the scope of heat-exchange devices with a good energy-saving effect and discloses a compact type finned tube bundle for a direct air-cooled condenser in a power station. The compact type finned tube bundle is obtained through properly reducing the fin height of a fin group of an original direct air-cooled condenser finned tube bundle; the compact type finned tube bundle comprises two parts, namely a base tube and a fin group; the fin group is perpendicular to the tube length direction of the base tube and uniformly distributed on the two sides of the base tube; a certain gap is reserved between every two adjacent fins; high temperature media flow in the base tube in the tube length direction and transfer heat to the fin group in a flowing process; and meanwhile, cooling media flow through gaps between every two adjacent fins outside the improved compact type finned tube bundle and absorb heat to complete the process of heat exchange. According to the compact type finned tube bundle disclosed by the invention, through reducing the height of the fins, the flowing resistance of the cooling media in the running process of a heat exchanger is reduced, as a result, the fin efficiency of the fin tubes is improved, and the operating economy of an air cooling system is improved; and the compact type finned tube bundle is suitable for being popularized and applied in the heat exchanger of the direct air-cooled condenser.

Description

A kind of close-coupled finned-tube bundle for power station direct air-cooling condenser
Technical field
The invention belongs to the heat-exchanger rig scope that energy-saving effect is good.In particular to a kind of close-coupled finned-tube bundle for power station direct air-cooling condenser.Can reduce the size of direct air cooled condenser and material consumption, improve fin heat exchange fin efficiency and the long-pending utilization rate of fin heat transfer surfaces simultaneously by reducing fin height specifically, improve the heat exchange property of unit fin area, reducing the flow resistance of cooling medium in heat transfer process, is a kind ofly can be used for the economy of power station direct air-cooling condenser, efficient, energy-conservation heat transmission equipment.
Background technology
Water resources shortage in global range, facilitates air cooling technique at each industrial field, especially the fast development of power industry.Finned-tube bundle is as the important heat exchange structure of power station air cooling condenser, and its heat exchange property will directly affect Air-cooled Unit economy.By the technology taking effective fin structure to improve, the heat-transfer capability of air cooling tubes condenser can be significantly improved, and then improve the heat-economy of system.The heat-exchanging tube bundle that the direct air cooled condenser of domestic operation adopts mostly is flat tube wave-fin form, and fin is evenly arranged in the both sides of flat base tube along the direction vertical with base tube pipe range.Turbine discharge enters in flat tube by steam-distributing pipe, and along the flowing of pipe range direction in flat tube, in flow process, steam constantly transfers heat to fin.Meanwhile, the outer surrounding air as cooling medium of fin, under the promotion of axial flow blower, flows through the gap between two panels fin, absorbs heat, complete the heat transfer process of air cooling tubes condenser finned-tube bundle.
In existing power station direct air-cooling condenser finned-tube bundle heat transfer process there is redundancy on the low side, the fin area of fin efficiency, part temperature in heat transfer process close to fin heads is lower, because too little and can not play effective heat exchange with the cooling medium temperature difference, the heat exchange property due to air cooling tubes condenser finned tube air side decides the exchange capability of heat height of condenser entirety.Therefore for improving the heat exchange level of air cooling tubes condenser, to the improvement of finned tube air side heat exchange property, the overall heat exchange performance of air cooling tubes condenser can be significantly improved.
Summary of the invention
The object of the invention is to propose a kind of close-coupled finned-tube bundle for power station direct air-cooling condenser, it is characterized in that, suitably reduce the fin height of the fins set of original direct air cooled condenser finned-tube bundle, obtain close-coupled finned-tube bundle; This close-coupled finned-tube bundle comprises base tube and fins set two parts, and fins set, perpendicular to base tube pipe range direction, is evenly arranged in base tube both sides, retains certain interval between two panels fin; High-temperature medium is along the flowing of pipe range direction in base tube, and transfer heat to fins set in flow process, meanwhile, cooling medium flows through the fin clearance outside the close-coupled finned-tube bundle of improvement, absorbs heat, completes heat transfer process.
Described base tube is flat tube or elliptical tube.
The fin of described fins set comprises wave-fin, rectangular fin and straight long fin.
The material of described base tube and fin is be applicable to the good metal of the heat conductivility of Direct Air-Cooled heat exchanger or nonmetallic materials; Concrete employing aluminum pipe aluminum fin-stock, steel pipe aluminum fin-stock or steel pipe steel fin.
The invention has the beneficial effects as follows, this close-coupled finned-tube bundle, by rationally reducing fin height, improves the utilization rate of fin.Deduct the part that in the Pipe bundle structure of original power station direct air-cooling condenser, top ribs efficiency is low, exchange capability of heat is poor; The fin efficiency of fin under effective raising unit are, improves the exchange capability of heat of heat exchanger, and the reduction of fin height simultaneously also can reduce the flow resistance in cooling medium flow process, reduces the power consumption driving cooling medium flowing.In addition, under identical air cooling tubes condenser volume, the reduction of fin height can arrange more finned-tube bundle.Improve the economy of system cloud gray model, be adapted at promoting the use of in the heat exchanger of direct air cooled condenser; Therefore have and be convenient to processing, practicality is high, and the advantage such as can put goods on the market very soon.
Accompanying drawing explanation
Fig. 1 is the close-coupled flat tube wave-fin Pipe bundle structure schematic diagram improved.
Fig. 2 is the close-coupled elliptical tube rectangular fin Pipe bundle structure schematic diagram improved.
Fig. 3 is the close-coupled flat tube rectangular fin Pipe bundle structure schematic diagram improved.
Fig. 4 is the straight long finned-tube bundle structural representation of close-coupled flat tube improved.
Detailed description of the invention
The present invention proposes a kind of close-coupled finned-tube bundle for power station direct air-cooling condenser, namely on the basis of the finned-tube bundle structure of existing power station direct air-cooling condenser, by rationally reducing the means of fin height, play the improvement project improving fin fin efficiency, reduce flow resistance, reduce exchanger body sum material.Be explained below in conjunction with accompanying drawing.
Figure of the present invention 1 ?Fig. 4 respectively illustrate the finned-tube bundle structural representation of the flat base tube of close-coupled, wherein Fig. 1 is the close-coupled flat tube wave-fin Pipe bundle structure schematic diagram improved; Fig. 2 is the close-coupled elliptical tube rectangular fin Pipe bundle structure schematic diagram improved; Fig. 3 is the close-coupled flat tube rectangular fin Pipe bundle structure schematic diagram improved; Fig. 4 is the straight long finned-tube bundle structural representation of close-coupled flat tube improved.Figure 1 ?Fig. 4 be all that fin 2 is along both sides that are vertical with the pipe range direction of base tube 1, that be evenly arranged in base tube 1; All can be used for the Pipe bundle structure of power station direct air-cooling condenser heat transfer process.
Figure 1 shows that the close-coupled flat tube wave-fin Pipe bundle structure that can be used for power station direct air-cooling condenser.In figure, base tube 1 and fin 2 are the forms adopting steel pipe aluminium wave-fin, and the fin height after wherein improving is 80% of prototype fin height, and fin 2 is along both sides that are vertical with the pipe range direction of base tube 1, that be evenly arranged in base tube 1.Turbine discharge enters in base tube 1 by steam-distributing pipe, and along the flowing of pipe range direction in base tube 1, in flow process, steam constantly transfers heat to fin 2; Meanwhile, the outer natural environment wind as cooling medium of fin, under the promotion of axial flow blower, flows through the gap between two panels fin, absorbs heat, complete the heat transfer process of air cooling tubes condenser finned-tube bundle.
The material related in above-mentioned example and equipment appearance and form are only to be explained patent of the present invention is described, but not limits the invention, and the amendment make the present invention and change, all fall into the protection domain of the claims in the present invention.

Claims (4)

1. for a close-coupled finned-tube bundle for power station direct air-cooling condenser, it is characterized in that, suitably reduce the fin height of the fins set of original direct air cooled condenser finned-tube bundle, obtain close-coupled finned-tube bundle; This close-coupled finned-tube bundle comprises base tube and fins set two parts, and fins set, perpendicular to base tube pipe range direction, is evenly arranged in base tube both sides, retains certain interval between two panels fin; High-temperature medium is along the flowing of pipe range direction in base tube, and transfer heat to fins set in flow process, meanwhile, cooling medium flows through the fin clearance outside the close-coupled finned-tube bundle of improvement, absorbs heat, completes heat transfer process.
2. according to claim 1 for the close-coupled finned-tube bundle of power station direct air-cooling condenser, it is characterized in that, described base tube is flat tube or elliptical tube.
3. according to claim 1 for the close-coupled finned-tube bundle of power station direct air-cooling condenser, it is characterized in that, the fin of described fins set comprises wave-fin, rectangular fin and straight long fin; Fin height is 80% of prototype fin height.
4. according to claim 1 for the close-coupled finned-tube bundle of power station direct air-cooling condenser, it is characterized in that, the material of described base tube and fin is be applicable to the good metal of the heat conductivility of Direct Air-Cooled heat exchanger or nonmetallic materials; Concrete employing aluminum pipe aluminum fin-stock, steel pipe aluminum fin-stock or steel pipe steel fin.
CN201510970186.8A 2015-12-22 2015-12-22 Compact type finned tube bundle for direct air-cooled condenser in power station Pending CN105509532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510970186.8A CN105509532A (en) 2015-12-22 2015-12-22 Compact type finned tube bundle for direct air-cooled condenser in power station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510970186.8A CN105509532A (en) 2015-12-22 2015-12-22 Compact type finned tube bundle for direct air-cooled condenser in power station

Publications (1)

Publication Number Publication Date
CN105509532A true CN105509532A (en) 2016-04-20

Family

ID=55717696

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510970186.8A Pending CN105509532A (en) 2015-12-22 2015-12-22 Compact type finned tube bundle for direct air-cooled condenser in power station

Country Status (1)

Country Link
CN (1) CN105509532A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114111389A (en) * 2022-01-27 2022-03-01 甘肃蓝科石化高新装备股份有限公司 Continuous H-shaped finned tube bundle with multiple parallel tubes and airflow partitions

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2896185Y (en) * 2006-04-03 2007-05-02 杭州中泰过程设备有限公司 Aluminium-plate-fin type turnbine generator air condensor
CN2932278Y (en) * 2006-06-05 2007-08-08 江苏双良空调设备股份有限公司 Serpentine fin heat exchange pipe
CN202339131U (en) * 2011-09-15 2012-07-18 成都深蓝高新技术发展有限公司 Double-layer finned heat exchange tube
CN202485521U (en) * 2011-12-28 2012-10-10 天津世玖制钢有限公司 Tube bundle for air-cooling condenser of direct air-cooling system
CN203216358U (en) * 2013-04-09 2013-09-25 魏楠 Anti-freezing finned tube for direct air-cooled condenser in power plant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2896185Y (en) * 2006-04-03 2007-05-02 杭州中泰过程设备有限公司 Aluminium-plate-fin type turnbine generator air condensor
CN2932278Y (en) * 2006-06-05 2007-08-08 江苏双良空调设备股份有限公司 Serpentine fin heat exchange pipe
CN202339131U (en) * 2011-09-15 2012-07-18 成都深蓝高新技术发展有限公司 Double-layer finned heat exchange tube
CN202485521U (en) * 2011-12-28 2012-10-10 天津世玖制钢有限公司 Tube bundle for air-cooling condenser of direct air-cooling system
CN203216358U (en) * 2013-04-09 2013-09-25 魏楠 Anti-freezing finned tube for direct air-cooled condenser in power plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114111389A (en) * 2022-01-27 2022-03-01 甘肃蓝科石化高新装备股份有限公司 Continuous H-shaped finned tube bundle with multiple parallel tubes and airflow partitions

Similar Documents

Publication Publication Date Title
CN201653005U (en) Air-conditioning condenser
CN203163576U (en) Variable-diameter wave node heat exchange pipe
CN204718193U (en) Aluminum alloy arrayed finned tube evaporator device
CN105509532A (en) Compact type finned tube bundle for direct air-cooled condenser in power station
CN103528417A (en) Tubular fin type finned tube exchanger
CN203534315U (en) Tube fin type finned tube heat exchanger
CN104457033B (en) Blade type heat exchanger
CN203629149U (en) Evaporator
CN103267437A (en) Double-finned heat pipe cooling device
CN105403079A (en) Energy-saving radiator with liner tubes and staggered type finned tubes and radiating method
CN203310278U (en) Air cooler
CN204574851U (en) A kind of air cooling tubes condenser
CN202599156U (en) Heat exchanger core body with staggered cooling pipes
CN203586902U (en) Novel efficient finned tube and air-cooled heat exchanger
CN202013049U (en) Aluminium ribbed pipe evaporative condenser and ribbed condenser pipe
CN202485521U (en) Tube bundle for air-cooling condenser of direct air-cooling system
CN203249437U (en) Air-cooled condenser
CN204064056U (en) Cellular heat transfer unit (HTU)
CN209013816U (en) High heat-exchange performance serpentine fin heat exchange pipe
CN203501837U (en) Evaporative air cooler
CN203501559U (en) Fin-type evaporator for refrigerator of large heat exchange area
CN203518758U (en) Efficient circulating corrugated fin structure
CN112728959B (en) Power plant air cooling heat exchanger and method based on gas-liquid phase change
CN202660816U (en) Parallel flow heat exchanger
CN206488661U (en) Heat exchanger

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20160420