CN201145504Y - Heat exchange tube with special cross-section - Google Patents

Heat exchange tube with special cross-section Download PDF

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Publication number
CN201145504Y
CN201145504Y CNU2007201886439U CN200720188643U CN201145504Y CN 201145504 Y CN201145504 Y CN 201145504Y CN U2007201886439 U CNU2007201886439 U CN U2007201886439U CN 200720188643 U CN200720188643 U CN 200720188643U CN 201145504 Y CN201145504 Y CN 201145504Y
Authority
CN
China
Prior art keywords
heat exchange
heat exchanger
exchanger tube
section
heat
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.)
Expired - Fee Related
Application number
CNU2007201886439U
Other languages
Chinese (zh)
Inventor
何景熙
陈善地
舒奎林
周杰
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.)
CHONGQING TIANRUI CHEMICAL ENGINEERING EQUIPMENT Co Ltd
Original Assignee
CHONGQING TIANRUI CHEMICAL ENGINEERING EQUIPMENT Co Ltd
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 CHONGQING TIANRUI CHEMICAL ENGINEERING EQUIPMENT Co Ltd filed Critical CHONGQING TIANRUI CHEMICAL ENGINEERING EQUIPMENT Co Ltd
Priority to CNU2007201886439U priority Critical patent/CN201145504Y/en
Application granted granted Critical
Publication of CN201145504Y publication Critical patent/CN201145504Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a heat exchange pipe with a special-shaped cross section. The heat exchange pipe comprises a heat exchange pipe (1) and is characterized in that: the cross section of the heat exchange pipe (1) is in the shape of a water drop; the water drop-shaped lower part of the heat exchange pipe (1) is opposite to a cooling air flow, while the water drop-shaped upper part is opposite to sprinkling cooling water. The heat exchange pipe, having simple and reasonable structure, not only effectively increases the heat exchange coefficient of a heat exchange pipe to reinforce heat exchange effect, but also solves the problem of heat exchange area reduction of an ordinary heat exchange pipe.

Description

A kind of heat exchanger tube of odd-shaped cross section
Technical field
The utility model relates to a kind of heat exchanger tube of vaporation-type air-flow cooler of the process for cooling that is used for industries such as electric power, oil, chemical industry, metallurgy, is specifically related to a kind of heat exchanger tube of odd-shaped cross section.
Background technology
At present in the process for cooling of industries such as electric power, oil, chemical industry, metallurgy, generally use vaporation-type air-flow cooler, heat exchanger tube in such air-flow cooler is generally the round steel pipe of pipe, the working medium fluid that is cooled is by heat exchanger tube inside, by pipe outer cooling blast and cooling water acting in conjunction cooling; General cooling blast is flowed into by the bottom of fan action from heat exchanger tube, flows out from heat exchanger tube top, and the cooling blast of certain flow is by taking away certain heat; Cooling water sprays downwards by spray equipment, produces moisture film on heat exchanger tube, and the hot working fluid fluid in the heat exchanger tube discharges heat and passes moisture film and heat the outer water droplet of heat exchanger tube, makes water droplet be subjected to thermal evaporation, thereby plays the cooling effect to hot fluid in managing.But, the not high problem of the coefficient of heat transfer that mainly has at present circular heat exchanger tube, at first for cooling blast by heat exchanger tube, the semicircle tube wall face that facings the wind at pipe, cooling blast will form laminar boundary layer or wake boundary bottom and turbulent layer at the tube wall face, no matter be which kind of situation, along with the development of cooling blast boundary layer on the windward side, the thickness in boundary layer will increase, and the corresponding coefficient of heat transfer will reduce, on the other hand, the flex point of cooling blast can only appear at certain point of lee face, that is to say, the eddy current flow-disturbing after the flex point can only appear at after the lee face point, the period that the just local coefficient of heat transfer increases is fewer, and the local coefficient of heat transfer is little; For the apparent moisture film of heat exchanger tube, along with the increase of water film thickness, corresponding equivalent heat transfer coefficient also can reduce in addition; At last, after the Working medium gas that is cooled in the pipe is liquefied as liquid, will be deposited on the bottom in the heat exchanger tube, thereby make the be cooled heat exchange area of Working medium gas reduce, more than the factor of three aspects be the circle that exists at present and the not high subject matter of the coefficient of heat transfer of oval heat exchanger tube.
Summary of the invention
The purpose of this utility model is to provide a kind of heat exchanger tube of simple and reasonable, odd-shaped cross section that the coefficient of heat transfer is high.
The purpose of this utility model is achieved in that a kind of heat exchanger tube of odd-shaped cross section, comprises heat exchanger tube, it is characterized in that: the cross section of described heat exchanger tube is a water droplet shape.
The bottom of the water droplet shape of above-mentioned heat exchanger tube is over against cooling blast, and the top of its water droplet shape is over against spraying cooling water.
The heat exchanger tube of the odd-shaped cross section that the utility model provides adopts the cross section structure of water droplet shape, for cooling blast, because windward side the reducing of size on the direction of facining the wind makes the boundary layer development section of cooling blast reduce, effectively reduce the thickness in boundary layer, improve the coefficient of heat transfer; Make the lift-off point of cooling blast move simultaneously to the windward side, the flow-disturbing of lift-off point back gas has increased the coefficient of heat transfer, and the local coefficient of heat transfer behind the lift-off point reduces and strengthens with the increase of horizontal spacing between the water droplet shape heat exchanger tube and longitudinal pitch, air-flow is after the laminar boundary layer lift-off, the rapid rise of the coefficient of heat transfer occurs, and the heat exchange peak value has all surpassed the value that cooling blast and tubular type are changed the rum point place; And along with the increase of Re number, move to the rum point direction position of lift-off point, and the coefficient of heat transfer peak value after the lift-off point increases, and local heat exchange strengthens; On the other hand, the cross section structure of water droplet shape can effectively reduce the thickness of the cooling moisture film of heat exchanger tube outer wall, improves the local coefficient of heat transfer; At last, for the gas that is cooled in the pipe, the cross section structure of water droplet shape can increase the heat exchange area of the Working medium gas that is cooled so that the liquid that is cooled of equal volume takies littler heat exchange area, has changed heat-transfer effect by force.
Therefore, the heat exchange tube structure advantages of simple of the odd-shaped cross section that the utility model provides, both effectively improved the coefficient of heat transfer of heat exchanger tube, the enhanced heat exchange effect has also solved the common heat exchanger tube problem that reduces of heat exchange area in use.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is the end face structure schematic diagram of embodiment of the present utility model;
Fig. 2 is the structural representation of the heat-exchanger rig of the heat exchanger tube composition of the odd-shaped cross section among employing Fig. 1;
Fig. 3 be among Fig. 2 A-A to the sectional structure schematic diagram.
The specific embodiment
Embodiment: referring to Fig. 1, a kind of heat exchanger tube of odd-shaped cross section comprises heat exchanger tube 1, it is characterized in that: the cross section of described heat exchanger tube 1 is a water droplet shape.
The bottom of the water droplet shape of described heat exchanger tube 1 is over against cooling blast, and the top of its water droplet shape is over against spraying cooling water.
Heat-exchanger rig among Fig. 2 adopts the heat-exchanging tube bundle 4 of the upper and lower two rejection tee sections of heat exchanger tube 1 composition among Fig. 1, fixedly connected with front header 2, rear header 3 respectively in the two ends of the heat-exchanging tube bundle 4 of described odd-shaped cross section, be connected with working medium inlet pipe 2-1 and working medium outlet pipe 2-2 respectively in the upper and lower of described front header 2, working medium is carried out heat exchange by the heat-exchanging tube bundle 4 that the working medium inlet pipe 2-1 of front header 2 enters row's odd-shaped cross section, the heat-exchanging tube bundle 4 that flows into the odd-shaped cross section of arranging down through rear header 3 conversions carries out heat exchange again, after the working medium outlet pipe 2-2 outflow of front header 2; Referring to Fig. 3, the heat exchanger tube 1 in the heat-exchanging tube bundle 4 of the upper and lower two rejection tee sections of the heat-exchanger rig among Fig. 2 is upper and lower corresponding the arrangement.

Claims (2)

1, a kind of heat exchanger tube of odd-shaped cross section comprises heat exchanger tube (1), it is characterized in that: the cross section of described heat exchanger tube (1) is a water droplet shape.
2. the heat exchanger tube of odd-shaped cross section according to claim 1, it is characterized in that: the bottom of the water droplet shape of described heat exchanger tube (1) is over against cooling blast, and the top of its water droplet shape is over against spraying cooling water.
CNU2007201886439U 2007-12-25 2007-12-25 Heat exchange tube with special cross-section Expired - Fee Related CN201145504Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201886439U CN201145504Y (en) 2007-12-25 2007-12-25 Heat exchange tube with special cross-section

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201886439U CN201145504Y (en) 2007-12-25 2007-12-25 Heat exchange tube with special cross-section

Publications (1)

Publication Number Publication Date
CN201145504Y true CN201145504Y (en) 2008-11-05

Family

ID=40082387

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201886439U Expired - Fee Related CN201145504Y (en) 2007-12-25 2007-12-25 Heat exchange tube with special cross-section

Country Status (1)

Country Link
CN (1) CN201145504Y (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101982661A (en) * 2010-11-16 2011-03-02 重庆大学 Vibration-proof circular pipe and using method thereof
CN102878842A (en) * 2012-10-24 2013-01-16 中国航天科技集团公司第五研究院第五一0研究所 Novel initiative jet cooling device
CN103447180A (en) * 2013-09-10 2013-12-18 中环(中国)工程有限公司 Wet process flue gas desulfurization water drop-shaped grout spraying pipe
CN104344534A (en) * 2013-07-23 2015-02-11 上海科泰运输制冷设备有限公司 Air conditioner coil pipe which can reduce noises by means of streamline section
CN105698316A (en) * 2016-03-30 2016-06-22 广东志高空调有限公司 Copper pipe structure and condenser and cooling system two-in-one air conditioner system thereof
CN108954982A (en) * 2018-08-15 2018-12-07 天津商业大学 The dry evaporator of shwoot heat exchanger tube
CN108981242A (en) * 2018-08-15 2018-12-11 天津商业大学 Heat exchanger tube water cooled condenser
CN110671951A (en) * 2019-09-30 2020-01-10 刘磊 Environment-friendly thermal power waste heat utilization equipment
CN112096970A (en) * 2019-06-18 2020-12-18 宝山钢铁股份有限公司 Stain-resistant anti-coking special pipe
CN112665421A (en) * 2020-12-23 2021-04-16 江苏中天能源设备有限公司 High-efficient dysmorphism tube sheet heat exchanger

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101982661A (en) * 2010-11-16 2011-03-02 重庆大学 Vibration-proof circular pipe and using method thereof
CN102878842A (en) * 2012-10-24 2013-01-16 中国航天科技集团公司第五研究院第五一0研究所 Novel initiative jet cooling device
CN104344534A (en) * 2013-07-23 2015-02-11 上海科泰运输制冷设备有限公司 Air conditioner coil pipe which can reduce noises by means of streamline section
CN103447180A (en) * 2013-09-10 2013-12-18 中环(中国)工程有限公司 Wet process flue gas desulfurization water drop-shaped grout spraying pipe
CN103447180B (en) * 2013-09-10 2016-08-31 中建中环工程有限公司 Wet process of FGD water-drop-shaped slurries shower
CN105698316A (en) * 2016-03-30 2016-06-22 广东志高空调有限公司 Copper pipe structure and condenser and cooling system two-in-one air conditioner system thereof
CN108954982A (en) * 2018-08-15 2018-12-07 天津商业大学 The dry evaporator of shwoot heat exchanger tube
CN108981242A (en) * 2018-08-15 2018-12-11 天津商业大学 Heat exchanger tube water cooled condenser
CN112096970A (en) * 2019-06-18 2020-12-18 宝山钢铁股份有限公司 Stain-resistant anti-coking special pipe
CN110671951A (en) * 2019-09-30 2020-01-10 刘磊 Environment-friendly thermal power waste heat utilization equipment
CN112665421A (en) * 2020-12-23 2021-04-16 江苏中天能源设备有限公司 High-efficient dysmorphism tube sheet heat exchanger

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20081105

Termination date: 20151225

EXPY Termination of patent right or utility model