CN114111377A - Method for designing harmonious deformable heat exchanger structure - Google Patents
Method for designing harmonious deformable heat exchanger structure Download PDFInfo
- Publication number
- CN114111377A CN114111377A CN202111415755.4A CN202111415755A CN114111377A CN 114111377 A CN114111377 A CN 114111377A CN 202111415755 A CN202111415755 A CN 202111415755A CN 114111377 A CN114111377 A CN 114111377A
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- China
- Prior art keywords
- heat exchanger
- head
- end plate
- shell
- right end
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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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000013461 design Methods 0.000 claims abstract description 14
- 239000001307 helium Substances 0.000 claims description 17
- 229910052734 helium Inorganic materials 0.000 claims description 17
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 17
- 238000003466 welding Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 12
- 239000002737 fuel gas Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005219 brazing Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- 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
- F28F9/0229—Double end plates; Single end plates with hollow spaces
-
- 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
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
-
- 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
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
Landscapes
- 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 relates to a method for designing a coordinative deformation heat exchanger structure, and belongs to the technical field of high-temperature and large-temperature-difference gradient heat exchanger structure design. The invention adopts the inner and outer double-end-socket structural design, can avoid the problem that the tube pass and the shell pass of the traditional shell-and-tube heat exchanger are not coordinated in thermal deformation, meets the requirement of coordinating the thermal deformation of the shell pass and the tube pass under the conditions of large temperature difference gradient and ultra-high temperature heat exchange of the cold and hot sides of the heat exchanger, is suitable for the structural design of the large temperature difference gradient heat exchanger, and improves the structural reliability of the heat exchanger under the condition of large temperature difference; meanwhile, the structure of the heat exchanger is simplified, and the heat exchanger is suitable for the design of a thin-wall tube bundle heat exchanger and a high-power-weight ratio shell-and-tube heat exchanger.
Description
Technical Field
The invention belongs to the technical field of structural design of high-temperature and large-temperature-difference gradient heat exchangers, and particularly relates to a structural design method of a coordinative deformation heat exchanger.
Background
In the field of precooling hypersonic combined engines, a heat exchanger is required to be used as a high-temperature gas and closed-cycle helium working medium energy exchange component to drive a closed-cycle turbine to do work and output power so as to complete energy conversion between heat energy and mechanical energy. Fig. 1, fig. 2 are the schematic structural diagram of a traditional shell-and-tube heat exchanger, a first end socket is fixedly connected with a first end plate 02 and a shell 03 through electron beam welding, the first end plate 02, a second end plate 05 and a heat exchange tube 04 are fixedly connected through brazing, when a large temperature gradient exists between high-temperature fuel gas and low-temperature helium gas, the temperature of the shell is close to that of high-temperature fuel gas, the temperature of the heat exchange tube is close to that of helium gas, the thermal deformation of the shell is larger than that of the heat exchange tube, the problem of incongruity of thermal deformation of the shell side and the tube side exists, the connection part of the heat exchange tube and the end plate is torn, and the heat exchanger fails.
Aiming at the situation, the conventional solution is to increase the wall thickness of the heat exchange tube and improve the strength of the connecting part, but the method can bring the defects of reduced power-to-weight ratio, reduced heat exchange efficiency and the like of the heat exchanger; the U-shaped heat exchange tube is used, the processing and forming difficulty of the heat exchange tube is increased, and the heat exchange tube is easy to damage for a fine thin-walled tube, so that a heat exchanger structure which can meet the requirements of large temperature difference gradient of a cold side and a hot side and high power-to-weight ratio is urgently needed to be designed.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: how to solve the problem that the structure of the heat exchanger is not matched with the deformation under the conditions of large temperature difference and ultrahigh temperature heat exchange.
(II) technical scheme
In order to solve the technical problem, the invention provides a method for designing a harmonious deformable heat exchanger structure, wherein the method comprises the following steps: the heat exchanger comprises an outer end enclosure 1, an inner end enclosure 2, a right end enclosure 6, a left end plate 3, a right end plate 5, a shell 4 and a heat exchange tube 11; adopt the inside and outside double-sealing-head structure that outer head 1, interior head 2 are constituteed at the heat exchanger left end, interior head 2 welds together with heat exchange tube 11, heat exchange tube 11 with left end plate 3 and right end plate 5 are connected, and left end plate 3 is connected with inner head 2, right end plate 5 and right head 6, and right end plate 5 is connected with right head 6 and is connected with casing 4 after being connected, and outer head 1 is connected with casing 4, adopts clearance fit between inner head 2 and the outer head 1, but relative movement, and casing 4 and left end plate 3 the two are clearance fit.
Preferably, the heat exchange tube 11 is connected with the left end plate 3 and the right end plate 5 by brazing.
Preferably, the left end plate 3 is connected with the inner seal head 2, and the right end plate 5 is connected with the right seal head 6 through laser welding.
Preferably, the right end plate 5 and the right end socket 6 are welded and then connected with the shell 4 through laser welding.
Preferably, the outer sealing head 1 and the shell 4 are connected by laser welding.
Preferably, the heat exchanger is further provided with a helium inlet 7, a helium outlet 8, a fuel gas inlet 9 and a fuel gas outlet 10.
The invention also provides a harmonious deformable heat exchanger designed by the method.
The invention also provides a working method of the coordinative deformation heat exchanger.
Preferably, under the working condition, the high-temperature gas flows through the shell pass, the low-temperature helium flows through the tube pass, the heated axial expansion amount of the shell pass at high temperature is greater than that of the tube pass, but the heat deformation of the shell pass does not influence the heat exchange tube 11 due to the structural design that the inner sealing head 2 and the outer sealing head 1 can move relatively.
The invention also provides a precooling hypersonic combined engine which comprises the coordinatable deformation heat exchanger.
(III) advantageous effects
The invention designs a heat exchanger structure, adopts an inner and outer double-end-socket structural design, can avoid the problem of incongruity of the thermal deformation of the tube side and the shell side of the traditional shell-and-tube heat exchanger, meets the requirement of coordinating the thermal deformation of the shell side and the tube side under the conditions of large temperature difference gradient of the cold side and the hot side of the heat exchanger and ultrahigh temperature heat exchange, is suitable for the structural design of the large temperature difference gradient heat exchanger, and improves the structural reliability of the heat exchanger under the condition of large temperature difference. Meanwhile, the structure of the heat exchanger is simplified, and the heat exchanger is suitable for the design of a thin-wall tube bundle heat exchanger and a high-power-weight ratio shell-and-tube heat exchanger.
Drawings
FIG. 1 is a schematic structural view of a conventional shell-and-tube heat exchanger;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic structural view of a double head heat exchanger according to the present invention;
fig. 4 is a sectional view taken along line a-a of fig. 3.
The device comprises a shell, a first end socket, a first end plate, a shell, a heat exchange pipe 04, a second end plate 05, a second end socket 06, a helium inlet 07, a helium inlet 08, a fuel gas inlet 09, a fuel gas outlet 010 and a helium outlet, wherein the shell is a shell;
the heat exchange tube comprises an outer end enclosure 1, an inner end enclosure 2, a left end plate 3, a shell 4, a right end plate 5, a right end enclosure 6, a helium inlet 7, a helium outlet 8, a gas inlet 9, a gas outlet 10 and a heat exchange tube 11.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
On an aircraft engine, a shell-and-tube heat exchanger is mainly used for heat exchange of fuel oil and lubricating oil, and the temperature difference between working media on a cold side and a hot side is small, so that the problem of incongruity of deformation between a shell and a heat exchange tube caused by temperature is not obvious; in ground industrial equipment, the wall thickness of the heat exchange tube is large, the connection strength between the heat exchange tube and the end plate is high, and the heat exchange tube can bear the stress of thermal deformation; when the U-shaped heat exchange tube is adopted, the U-shaped tube has high requirements on the forming of the fine thin-walled tube. Therefore, the technical problems related to the invention are not referred to in the similar technical fields.
According to the above analysis, the main contradiction of the defects of the prior art is that the shell and the heat exchange tube have large deformation difference and are structurally connected with each other, so that aiming at the contradiction, the invention designs a double-end-enclosure micro-tube shell-and-tube heat exchanger structure with large temperature difference gradient, which comprises an outer end enclosure 1, an inner end enclosure 2, a right end enclosure 6, a left end plate 3, a right end plate 5, a shell 4 and a heat exchange tube 11, and is provided with a helium gas inlet 7, a helium gas outlet 8, a fuel gas inlet 9 and a fuel gas outlet 10; adopt inside and outside double-sealing-head structure at the heat exchanger left end, interior head 2 is in the same place with the welding of heat exchange tube 11, heat exchange tube 11 through brazed mode with left end plate 3 and right end plate 5 are connected, left end plate 3 and interior head 2, right-hand member board 5 pass through laser welding with right head 6 and are connected, right end plate 5 passes through laser welding with casing 4 after 6 welding with right head, guarantee the fixed of heat exchange tube position, outer head 1 passes through laser welding with casing 4 and is connected, adopt clearance fit between interior head 2 and the outer head 1, but relative movement, casing 4 is not continuous with left end plate 3, the two has clearance fit, realize not influencing the deformation between each other in axial direction.
Under the working condition, high-temperature gas flows away from the shell side, low-temperature helium flows away from the tube side, the heated axial expansion amount of the shell side at high temperature is greater than that of the tube side, and the heat exchange tube 11 cannot be influenced by the thermal deformation of the shell side due to the structural design that the inner sealing head 2 and the outer sealing head 1 can move relatively.
The heat exchanger with the double-sealing-head structure is subjected to a high-temperature test at 1000 ℃, and then is subjected to air tightness detection at 0.5MPa, so that the structure is complete.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method for designing a harmonious deformable heat exchanger structure is characterized in that in the method, the heat exchanger is designed as follows: comprises an outer end enclosure (1), an inner end enclosure (2), a right end enclosure (6), a left end plate (3), a right end plate (5), a shell (4) and a heat exchange tube (11); adopt outer head (1), interior double sealing head structure that interior head (2) are constituteed at the heat exchanger left end, interior head (2) are in the same place with heat exchange tube (11) welding, heat exchange tube (11) with left end plate (3) and right end plate (5) are connected, and left end plate (3) are connected with interior head (2), right end plate (5) and right head (6), and right end plate (5) are connected back and are connected with casing (4) with right head (6), and outer head (1) is connected with casing (4), adopts clearance fit between inner head (2) and the outer head (1), but relative movement, casing (4) and left end plate (3) the two are clearance fit.
2. A method according to claim 1, wherein the heat exchange tubes (11) are joined to the left and right end plates (3, 5) by brazing.
3. The method according to claim 1, characterized in that the left end plate (3) and the inner head (2) and the right end plate (5) and the right head (6) are connected by laser welding.
4. The method according to claim 1, characterized in that the right end plate (5) is welded with the right end plate (6) and then connected with the shell (4) by laser welding.
5. Method according to claim 1, characterized in that the outer head (1) and the shell (4) are connected by laser welding.
6. The method according to claim 1, wherein the heat exchanger is further provided with a helium gas inlet (7), a helium gas outlet (8), a fuel gas inlet (9) and a fuel gas outlet (10).
7. A conformable deformable heat exchanger designed using the method of any one of claims 1 to 6.
8. A method of operating a conformable transformative heat exchanger as set forth in claim 7.
9. The method as claimed in claim 8, wherein under operating conditions, high-temperature gas flows through a shell side, low-temperature helium flows through a tube side, the axial expansion of the shell side under high temperature is greater than that of the tube side, but the heat exchange tube (11) is not affected by the thermal deformation of the shell side due to the structural design that the inner head (2) and the outer head (1) can move relatively.
10. A pre-chilled hypersonic combination engine comprising the conformable transfigurable heat exchanger of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111415755.4A CN114111377A (en) | 2021-11-25 | 2021-11-25 | Method for designing harmonious deformable heat exchanger structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111415755.4A CN114111377A (en) | 2021-11-25 | 2021-11-25 | Method for designing harmonious deformable heat exchanger structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114111377A true CN114111377A (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111415755.4A Pending CN114111377A (en) | 2021-11-25 | 2021-11-25 | Method for designing harmonious deformable heat exchanger structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114111377A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI810944B (en) * | 2022-05-24 | 2023-08-01 | 創新服務股份有限公司 | Heat conduction plate production method and heat conduction plate production equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050287053A1 (en) * | 2004-06-29 | 2005-12-29 | Toyo Engineering Corporation | Reformer |
| CN206095003U (en) * | 2016-09-18 | 2017-04-12 | 中国石化工程建设有限公司 | Shell -and -tube high pressure heat exchanger |
| CN214276612U (en) * | 2021-02-01 | 2021-09-24 | 河南新航航空设备科技有限公司 | High-temperature heat exchanger |
-
2021
- 2021-11-25 CN CN202111415755.4A patent/CN114111377A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050287053A1 (en) * | 2004-06-29 | 2005-12-29 | Toyo Engineering Corporation | Reformer |
| CN206095003U (en) * | 2016-09-18 | 2017-04-12 | 中国石化工程建设有限公司 | Shell -and -tube high pressure heat exchanger |
| CN214276612U (en) * | 2021-02-01 | 2021-09-24 | 河南新航航空设备科技有限公司 | High-temperature heat exchanger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI810944B (en) * | 2022-05-24 | 2023-08-01 | 創新服務股份有限公司 | Heat conduction plate production method and heat conduction plate production equipment |
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Application publication date: 20220301 |
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