CN102967170A - Turning vane sealing head of plate-fin heat exchanger - Google Patents
Turning vane sealing head of plate-fin heat exchanger Download PDFInfo
- Publication number
- CN102967170A CN102967170A CN2012104552219A CN201210455221A CN102967170A CN 102967170 A CN102967170 A CN 102967170A CN 2012104552219 A CN2012104552219 A CN 2012104552219A CN 201210455221 A CN201210455221 A CN 201210455221A CN 102967170 A CN102967170 A CN 102967170A
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- CN
- China
- Prior art keywords
- end socket
- heat exchanger
- sealing head
- inlet tube
- air deflector
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- 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.)
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-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end plates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a turning vane sealing head of a plate-fin heat exchanger. The turning vane sealing head comprises a sealing head melon skin structure, wherein an inlet tube is communicated with the sealing head melon skin structure; an outlet is formed at the bottom of the sealing head melon skin structure; two turning vanes are arranged in the sealing head melon skin structure symmetrically; the upper parts of the turning vanes are connected with the bottom of the inlet tube; the side parts of the turning vanes are connected with the inside of the sealing head melon skin structure; small holes are distributed in the turning vanes; when a fluid discharged from the inlet tube of the heat exchanger passes through the turning vane sealing head, primary fluid distribution is performed at the junction of the inlet tube and the melon sink structure, and secondary fluid distribution is performed when fluids on both sides meet the small holes in the turning vanes. The turning vanes consume the movable pressure head of the fluids for slowing down the fluid, so that the distribution condition of each small hole is improved greatly, heat transferring performance is improved, equipment investment on area loss of the heat exchanger is reduced and compensated, and severe accidents caused by poor heat exchange are eliminated; and the turning vane sealing head is simple in structure, and is low in cost.
Description
Technical field
The invention belongs to the plate-fin heat exchanger technical field, be specifically related to a kind of plate-fin heat exchanger flap end socket.
Technical background
Plate-fin heat exchanger is the key equipment in the thermal procession, has compact conformation, heat transfer efficiency height, is convenient to the characteristics such as channel arrangement and heat exchange area distribution.Compare with traditional shell-and-tube heat exchanger, its heat transfer efficiency can improve 20%～30%, and it is about 50% that cost can reduce, and therefore is widely used in the fields such as air separation, petrochemical industry, Aero-Space.
Research both domestic and external is pointed out, causes that the principal element that such heat exchanger performance descends is the skewness in inhomogeneous, the vertical heat conduction of flow distribution and temperature field.Because the inhomogeneous of flow distribution can aggravate the inhomogeneous and vertical heat transfer of heat exchanger internal temperature field distribution, thereby aggravated the decline of heat exchanger overall efficiency, so the impact of flow distribution inhomogeneities heat exchanger usefulness is topmost in the three.How to improve the flow distribution of heat exchanger inside, thereby improve the research of heat exchanger overall efficiency, obtained domestic and international experts and scholars' common concern always.The factor that causes plate-fin heat exchanger internal flows maldistribution is many-sided, such as irrational end enclosure structure, manufacturing tolerance and heat exchanging process etc.
Result of study shows that the inhomogeneities of flow distribution mainly occurs in the end socket part of plate-fin heat exchanger.And the inhomogeneities of flow deflector part mainly is to cause by the incoming flow of end socket is inhomogeneous.For the present basic end socket that uses of plate-fin heat exchanger, because its entrance caliber is compared too little with end socket length, thereby so that the end socket outlet is larger corresponding near the rate of flow of fluid the inlet pipe axial line, and it is very little away from the local rate of flow of fluid of axis, cause flow distribution extremely inhomogeneous, thereby affect the heat exchange efficiency of heat exchanger, and this impact enlarges along with the increase of number of transfer units.Because the flow arrangement mode of end enclosure structure and heat exchanger is different, the inhomogeneities of flow distribution is different on the impact of its overall efficiency, can cause the overall efficiency of contra-flow heat exchanger to descend 7%, and on the impact of cross-current type heat exchanger effectiveness up to 25%, thereby reduced the overall efficiency of such heat exchanger.From the above mentioned, the entrance structure of heat transmission equipment plays vital effect to the Flow Field Distribution of incoming flow, and the uniform distribution of incoming flow is to guarantee the uniform prerequisite of heat transmission equipment interior flow field.Thereby, a kind of uniform distribution of flap end socket heat exchanger inner fluid, performance optimization and energy-conservation most important that can make the plate-fin heat exchanger logistics obtain uniform distribution proposed, have important practical significance.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of plate-fin heat exchanger flap end socket, improve its heat transfer property, reduce the equipment investment that remedies the heat exchanger area loss, and eliminate the serious accident cause because heat exchange is bad, and simple in structure, with low cost.
In order to achieve the above object, the technical scheme taked of the present invention is:
A kind of plate-fin heat exchanger flap end socket, comprise end socket melon peel structure 2, inlet tube 1 is connected with end socket melon peel structure 2, the bottom of end socket melon peel structure 2 is provided with outlet 4, two Air deflector 3 symmetries are installed in the end socket melon peel structure 2, and the top of Air deflector 3 is connected with the bottom of inlet tube 1, and the inside that the sidepiece of Air deflector 3 is connected with the end socket melon peel structure connects, be covered with aperture on the Air deflector 3, the diameter of aperture is 10mm-30mm.
The arrangement mode of aperture has two kinds on the described Air deflector 3: evenly arrange, the aperture is identical, and in-line arrangement is arranged; Non-homogeneous arranging, minimum near the regional hole diameter of inlet tube 1, the hole diameter that departs from inlet tube 1 zone takes second place, and is maximum near the hole diameter in end socket section edges zone.
The top is installed on the intersection of inlet tube 1 and end socket melon peel structure 2 on two fins of described Air deflector 3, and two fin tops of Air deflector 3 are 0.05 ~ 0.15 apart from the ratio of the diameter d of s and inlet tube 1.
The lower bottom of described Air deflector 3 is apart from the height h=1/4R in outlet 4 cross sections of end socket melon peel structure 2, and R is end socket melon peel structure 2 radiuses.
Two fins of described Air deflector 3 are a with coming the angle of flow path direction, and a is 60 ° ~ 80 °.
Superiority of the present invention is:
1. the modified end socket after the interpolation flap is compared with basic end socket, the uniformity of flow distribution has had large increase, the inhomogeneity improvement meeting of flow distribution is so that the entrained uniform heat distribution of fluid is consistent, thereby so that the uniform distribution of temperature field in heat exchanger cross section, can take full advantage of the effective heat exchange area of heat exchanger, realize uniform heat exchange.
2. adopt this novel entrance configuration in plate-fin heat exchanger, can greatly improve the flow distribution of heat exchanger plate bundle inside, improve the heat transfer property of heat exchanger, reduce the equipment investment that remedies the heat exchange area loss, eliminate the serious accident that high-pressure plate-fin heat exchanger causes because heat exchange is bad, reduce accident rate and operation and maintenance cost.The optimal design of the research work heat exchanger of patent of the present invention is significant, and is especially significant with the optimal design of plate-fin heat exchanger and Aero-Space small form factor plate-fin heat exchanger for Large Air Separation Devices.
3. the Air deflector that adds of this flap end socket is simple in structure, with low cost and be easy to install processing, uses significant for the engineering of plate-fin heat exchanger.Guarantee that with improving the good heat transfer property of plate-fin heat exchanger be heat exchanger research and designer's vital task, to the research of its performance with improve the advantage that more can further embody this high-performance heat exchanger, have important engineering significance and theory value.
Description of drawings
Fig. 1 is section of structure of the present invention.
Fig. 2-a is the side view of Fig. 1; Fig. 2-b is the upward view of Fig. 1.
Fig. 3-a is the evenly distributed Air deflector of aperture 3 schematic diagrames; Fig. 3-b is Air deflector 3 schematic diagrames of the non-homogeneous arrangement of aperture.
Fig. 4 is installation parameter schematic diagram of the present invention.
Fig. 5-a is Flow Field Distribution figure in the original end socket; Fig. 5-b is Flow Field Distribution figure in the flap end socket.
Fig. 6 is the outgoing quality flow diagram of original end socket and flap end socket.
Fig. 7 is that the rate of discharge unevenness is with the variation diagram of installation parameter s of the present invention and a.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in detail:
With reference to Fig. 1, Fig. 2-a and Fig. 2-b, a kind of plate-fin heat exchanger flap end socket, comprise end socket melon peel structure 2, inlet tube 1 is connected with end socket melon peel structure 2, and the bottom of end socket melon peel structure 2 is provided with 4, two Air deflector 3 symmetries of outlet and is installed in the end socket melon peel structure 2, the top of Air deflector 3 is connected with the bottom of inlet tube 1, the inside that the sidepiece of Air deflector 3 is connected with the end socket melon peel structure connects, and is covered with aperture on the Air deflector 3, and the diameter of aperture is 10mm-30mm.
The arrangement mode of aperture has two kinds on the described Air deflector 3: evenly arrange, with reference to Fig. 3-a, the aperture is identical, and in-line arrangement is arranged; Non-homogeneous arranging, with reference to Fig. 3-b, minimum near the regional hole diameter of inlet tube 1, the hole diameter that departs from inlet tube 1 zone takes second place, and is maximum near the hole diameter in end socket section edges zone.
With reference to Fig. 4, the top is installed on the intersection of inlet tube 1 and end socket melon peel structure 2 on two fins of described Air deflector 3, and two fin tops of Air deflector 3 are 0.05 ~ 0.15 apart from the ratio of the diameter d of s and inlet tube 1.
With reference to Fig. 4, the lower bottom of described Air deflector 3 is apart from the height h=1/4R in outlet 4 cross sections of end socket melon peel structure 2, and R is end socket melon peel structure 2 radiuses.
With reference to Fig. 4, two fins of described Air deflector 3 are a with coming the angle of flow path direction, and a is 60 ° ~ 80 °.
Operation principle of the present invention is:
The fluid of coming in from the heat exchanger entrance pipe is during through the flap end socket, at first carries out first time fluid at the intersection of inlet tube 1 and melon peel structure 2 and distributes, and then the fluid of both sides carries out the fluid distribution second time when running into the flap aperture.Air deflector 3 can consume the dynamic head of fluid so that fluid is gentle, greatly improve the distribution condition by each aperture, thereby so that fluid had just carried out uniform distribution before the outlet 4 that arrives end socket, therefore efficiently solve the problem of heat exchanger internal flow maldistribution.With reference to Fig. 4, after making fluid enter the end socket of heat exchanger entrance, better to be shunted, flap end socket installation parameter represents with two dimensionless groups: 1. opposed wings is apart from s/d; 2. flap angle a.According to original end enclosure structure and corresponding incoming flow operating mode these two dimensionless groups are done suitable adjustment, to seek best installation parameter.
For the assigned characteristics in the end enclosure structure of analysing fluid before and after improving, consider simultaneously and use manpower and material resources sparingly, the present invention adopts the numerical simulation appraisal procedure, and the Flow Field Distribution situation in the end socket before and after the architecture advances is carried out respectively numerical simulation, thereby obtains the fluid assigned characteristics of macroscopic view.
With reference to Fig. 5-a, Fig. 5-b and Fig. 6, by the distribution situation of Fig. 5-a and the visible flap end socket of Fig. 5-b and original end socket medium velocity field, Fig. 6 is the Mass Distribution situation of flap end socket and the outlet of original end socket.The analog result that contrasts two figure shows, the flap end socket increases in the little situation in the pressure drop of fluid, can effectively the high mass flow of original end socket over against the outlet of inlet tube place end socket be reduced, and increased flow away from central axis place end socket outlet, reach the purpose of logistics uniform distribution, therefore can effectively improve the heat transfer property of heat exchanger.
Claims (5)
1. plate-fin heat exchanger flap end socket, comprise end socket melon peel structure (2), inlet tube (1) is connected with end socket melon peel structure (2), the bottom of end socket melon peel structure (2) is provided with outlet (4), it is characterized in that: two Air deflectors (3) symmetry is installed in the end socket melon peel structure (2), the top of Air deflector (3) is connected with the bottom of inlet tube (1), the sidepiece of Air deflector (3) is connected 2 with the end socket melon peel structure) inside connect, Air deflector is covered with aperture on (3), and the diameter of aperture is 10mm-30mm.
2. a kind of plate-fin heat exchanger flap end socket according to claim 1 is characterized in that: the arrangement mode of the upper aperture of described Air deflector (3) has two kinds of arrangement modes: evenly arrange, the aperture is identical, and in-line arrangement is arranged; Non-homogeneous arranging, minimum near the regional hole diameter of inlet tube (1), the hole diameter that departs from inlet tube (1) zone takes second place, and is maximum near the hole diameter in end socket section edges zone.
3. a kind of plate-fin heat exchanger flap end socket according to claim 1 and 2, it is characterized in that: the top is installed on the intersection of inlet tube (1) and end socket melon peel structure (2) on two fins of described Air deflector (3), and two fin tops of Air deflector (3) are 0.05 ~ 0.15 apart from the ratio of the diameter d of s and inlet tube (1).
4. a kind of plate-fin heat exchanger flap end socket according to claim 1 and 2, it is characterized in that: the lower bottom of described Air deflector (3) is apart from the height h=1/4R in outlet (4) cross section of end socket melon peel structure (2), and R is end socket melon peel structure (2) radius.
5. a kind of plate-fin heat exchanger flap end socket according to claim 1 and 2 is characterized in that: two fins of described Air deflector (3) are a with coming the angle of flow path direction, and a is 60 ° ~ 80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104552219A CN102967170A (en) | 2012-11-13 | 2012-11-13 | Turning vane sealing head of plate-fin heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104552219A CN102967170A (en) | 2012-11-13 | 2012-11-13 | Turning vane sealing head of plate-fin heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102967170A true CN102967170A (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104552219A Pending CN102967170A (en) | 2012-11-13 | 2012-11-13 | Turning vane sealing head of plate-fin heat exchanger |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989629A (en) * | 2017-02-27 | 2017-07-28 | 浙江大学 | The two-directional corrugations type water conservancy diversion end socket and its construction method of a kind of plate-fin heat exchanger |
| US10126028B2 (en) | 2014-09-08 | 2018-11-13 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Turbo chiller |
| CN109059603A (en) * | 2018-09-14 | 2018-12-21 | 西安热工研究院有限公司 | Guiding device and method in a kind of printed circuit board exchanger head |
| CN111121502A (en) * | 2018-10-31 | 2020-05-08 | 中石化广州工程有限公司 | Cross-flow type all-welded plate heat exchanger containing guide plates |
| WO2021260465A1 (en) * | 2020-06-26 | 2021-12-30 | Atlas Copco Airpower, Naamloze Vennootschap | Heat exchanger and method for manufacturing such a heat exchanger |
| CN117968439A (en) * | 2024-04-01 | 2024-05-03 | 中国核动力研究设计院 | Flow equipartition seal head of heat exchanger and design method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2071778U (en) * | 1990-05-14 | 1991-02-20 | 开封空分设备厂 | Air-flow even distributor for plate-fin heat exchanger |
| CN1431453A (en) * | 2003-01-17 | 2003-07-23 | 西安交通大学 | Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate |
| CN2735284Y (en) * | 2004-07-26 | 2005-10-19 | 西安交通大学 | End socket structure of uniform flow guiding plate-fin heat exchanger |
| CN101514879A (en) * | 2009-03-03 | 2009-08-26 | 西安交通大学 | Parallel combined multi-shell side spiral traverse baffle shell and tube heat exchanger |
| CN102538562A (en) * | 2012-02-17 | 2012-07-04 | 西安交通大学 | Shell-and-tube heat exchanger with combined type one-shell-pass continuous spiral baffles |
-
2012
- 2012-11-13 CN CN2012104552219A patent/CN102967170A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2071778U (en) * | 1990-05-14 | 1991-02-20 | 开封空分设备厂 | Air-flow even distributor for plate-fin heat exchanger |
| CN1431453A (en) * | 2003-01-17 | 2003-07-23 | 西安交通大学 | Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate |
| CN2735284Y (en) * | 2004-07-26 | 2005-10-19 | 西安交通大学 | End socket structure of uniform flow guiding plate-fin heat exchanger |
| CN101514879A (en) * | 2009-03-03 | 2009-08-26 | 西安交通大学 | Parallel combined multi-shell side spiral traverse baffle shell and tube heat exchanger |
| CN102538562A (en) * | 2012-02-17 | 2012-07-04 | 西安交通大学 | Shell-and-tube heat exchanger with combined type one-shell-pass continuous spiral baffles |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10126028B2 (en) | 2014-09-08 | 2018-11-13 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Turbo chiller |
| CN106989629A (en) * | 2017-02-27 | 2017-07-28 | 浙江大学 | The two-directional corrugations type water conservancy diversion end socket and its construction method of a kind of plate-fin heat exchanger |
| CN106989629B (en) * | 2017-02-27 | 2018-12-25 | 浙江大学 | A kind of the two-directional corrugations type water conservancy diversion end socket and its construction method of plate-fin heat exchanger |
| CN109059603A (en) * | 2018-09-14 | 2018-12-21 | 西安热工研究院有限公司 | Guiding device and method in a kind of printed circuit board exchanger head |
| CN111121502A (en) * | 2018-10-31 | 2020-05-08 | 中石化广州工程有限公司 | Cross-flow type all-welded plate heat exchanger containing guide plates |
| WO2021260465A1 (en) * | 2020-06-26 | 2021-12-30 | Atlas Copco Airpower, Naamloze Vennootschap | Heat exchanger and method for manufacturing such a heat exchanger |
| BE1028438B1 (en) * | 2020-06-26 | 2022-02-03 | Atlas Copco Airpower Nv | Heat exchanger and method for manufacturing such a heat exchanger |
| CN117968439A (en) * | 2024-04-01 | 2024-05-03 | 中国核动力研究设计院 | Flow equipartition seal head of heat exchanger and design method thereof |
| CN117968439B (en) * | 2024-04-01 | 2024-06-04 | 中国核动力研究设计院 | Flow equipartition seal head of heat exchanger and design method thereof |
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Application publication date: 20130313 |