Heat exchanger bulging plate machining structure and machining method
By using the structure and method of using the first plate, the second plate, the reinforcement, the first pipe, the pad plate and the pressing part during the heat exchanger expansion plate processing, the problem of deformation and uneven bulging height of the bulging plate is solved. Achieve better processability and product quality.
Patent Information
- Application Number
- CN202411399093.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-02-11
AI Technical Summary
During the process of heat exchanger bulging plate processing, the bulging plate is prone to undesired bending deformation and uneven bulging height problems, which are difficult to repair and affect product quality.
A processing structure and method including a first plate, a second plate, a reinforcement member, a first pipe, a pad plate and a pressing part are adopted. The first plate is arranged overlapping with the second plate, and the second plate is connected to the reinforcement member and the first pipe on the back of the second plate. The middle part of the pad plate forms a receiving cavity against the bulging area of the first plate, and the reinforcement member is pressed through the pressing part to reduce deformation.
Effectively reduce or avoid unnecessary deformation of the bulging plate during processing, improve the uniformity of the bulging height, and is especially suitable for large heat exchanger box panels.
Smart Images
Figure CN119407035A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of bulging plate processing, and in particular to a bulging plate processing structure and a processing method for a heat exchanger. Background Art
[0002] The expansion plate of the heat exchanger usually has a sandwich structure, which realizes the material heat exchange function by passing cooling medium or heating medium (collectively referred to as heat exchange medium) into the sandwich. During the processing of the expansion plate of the heat exchanger, especially the processing of the expansion plate of a large heat exchanger, the expansion plate may undergo unexpected and difficult-to-correct deformation, and the uniformity of the expansion height of the expansion plate is difficult to ensure.
[0003] Figure 1 , Figure 2 and Figure 3 The figure shows a heat exchanger expansion plate processing structure known to the inventor, wherein the expansion plate may be a honeycomb expansion plate. The expansion plate processing structure may include a thin plate 1, a thick plate 2, a pipe 3, a valve 4 and a workbench 5. Figure 2 As shown, the edges of the thin plate 1 and the thick plate 2 can be welded and fitted, and according to the preset honeycomb connection position and flow channel arrangement, the thin plate 1 and the thick plate 2 are laser welded and connected at the preset position. The thin plate 1 can form an opening, and the opening is used to weld the pipe 3. The pipe 3 can be used to pass pressurized gas for bulging, and can also be used to pass heat exchange medium after the bulging plate is formed. The pipe 3 can be welded with a valve 4, and the valve 4 can be connected to a high-pressure gas source. Figure 1 and Figure 3 As shown, after the thin plate 1, thick plate 2, pipe 3 and valve 4 are connected, they can be placed on a workbench 5, wherein the thick plate 2 can be in contact with the workbench 5. High-pressure gas is filled between the thin plate 1 and the thick plate 2 through the valve 4 and pipe 3. After the internal pressure reaches the preset pressure, the gas source can be closed and the pressure can be released after a certain period of time to complete the bulging forming process.
[0004] The heat exchanger bulging plate manufactured according to the above technical solution is very prone to bending and deformation at the edge of the heat exchanger bulging plate, especially the heat exchanger bulging plate as a whole (including the thin plate 1 and the thick plate 2) is prone to bending and deformation, edge warping and other phenomena that are difficult to repair. The thin plate 1 is prone to uneven bulging height after pressurization and bulging. Summary of the invention
[0005] This application is made in view of the above-mentioned state of the prior art. The purpose of this application is to provide a heat exchanger bulging plate processing structure and processing method, which can effectively reduce or avoid bending deformation of the bulging plate during processing, and at the same time can improve the uniformity of the bulging height of the bulging plate.
[0006] The present application provides a heat exchanger bulging plate processing structure, which includes a first plate, a second plate, a reinforcement, a first pipe, a pad and a pressing part.
[0007] The first plate and the second plate are overlapped, and the edge of the first plate is connected to the second plate to form a heat exchanger expansion plate. The strength of the first plate is less than that of the second plate, and the first plate can be expanded and deformed.
[0008] The second plate has a side facing away from the first plate connected to the reinforcement member and the first pipe.
[0009] The pressing portion is pressed against a side of the reinforcing member that is away from the second plate, and is used to press the reinforcing member.
[0010] A receiving cavity is formed in the middle of the pad, the bulging area of the first plate is aligned with the receiving cavity, the receiving cavity can at least partially receive the first plate after bulging, and the first plate at least partially abuts against the bottom surface of the receiving cavity after bulging.
[0011] In at least one possible embodiment, the heat exchanger bulging plate processing structure further includes a tooling table, the backing plate is connected to the tooling table, and the tooling table is arranged at the operating position of the hydraulic press.
[0012] In at least one possible embodiment, a pipeline valve is provided at one end of the first pipeline that is not connected to the second plate, for introducing high-pressure gas into the heat exchanger expansion plate.
[0013] In at least one possible implementation, the first plate and the second plate are made of the same material, and the thickness of the first plate is smaller than the thickness of the second plate.
[0014] In at least one possible implementation, the reinforcement member includes a plurality of channel steels, and the plurality of channel steels form a structure that intersects vertically and horizontally.
[0015] In at least one possible embodiment, the pad forms a "U-shaped" structure with a central through-hole, the size of the first plate is smaller than the size of the second plate, the first plate can be completely accommodated in the accommodating cavity of the pad, and the second plate is attached to the pad.
[0016] In at least one possible implementation, a height of the reinforcement in a direction perpendicular to the second plate is greater than a height of the first pipe in a direction perpendicular to the second plate.
[0017] The present application also provides a heat exchanger bulging plate processing method, which is applicable to the above-mentioned heat exchanger bulging plate processing structure.
[0018] The processing method comprises:
[0019] The first plate and the second plate are connected by welding,
[0020] A hole is opened on the side of the second plate facing away from the first plate and the first pipe is connected thereto, and the reinforcing member is connected to the side of the second plate facing away from the first plate.
[0021] The connected first plate and the second plate are pressed against the upper surface of the backing plate, and the bulging area of the first plate is aligned with the accommodating cavity of the backing plate.
[0022] The pressing portion abuts against the reinforcement member to press the reinforcement member, the second plate and the backing plate to reduce deformation of the second plate during bulging.
[0023] An expansion medium is introduced into the heat exchanger expansion plate through the first pipeline to expand the heat exchanger expansion plate into shape.
[0024] In at least one possible embodiment, after the bulging forming, a height gauge is used to detect the bulging height of the bulging plate of the heat exchanger, and one of the product qualification conditions is that the height of more than 80% of the bulging area of the heat exchanger bulging plate meets the process requirements.
[0025] Check whether the maximum deformation of the bulging plate of the heat exchanger meets the process requirements.
[0026] In at least one possible embodiment, after the bulging forming is completed, the reinforcement member, the first pipe and the second plate are separated.
[0027] A second pipe is connected to a side of the first plate facing away from the second plate, and is used to introduce heat exchange medium into the heat exchanger expansion plate.
[0028] The heat exchanger bulging plate processing structure and processing method provided in the present application can reduce or avoid unnecessary deformation of the heat exchanger bulging plate during bulging forming, and can improve the uniformity of the bulging height of the heat exchanger bulging plate. The present application is particularly suitable for heat exchanger box plates with larger sizes. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a structural schematic diagram of a bulging plate processing structure known to the inventor.
[0030] Figure 2 The figure is a schematic structural diagram of a bulging plate known to the inventor before bulging.
[0031] Figure 3 Another structural schematic diagram of a bulging plate processing structure known to the inventor.
[0032] Figure 4It is a partial structural schematic diagram of a bulging plate processing structure according to one embodiment of the present application.
[0033] Figure 5 It is another partial structural schematic diagram of a bulging plate processing structure according to one embodiment of the present application.
[0034] Figure 6 It is a structural schematic diagram of a bulging plate processing structure according to one embodiment of the present application.
[0035] Figure 7 It is a cross-sectional schematic diagram of a bulging plate processing structure according to one embodiment of the present application.
[0036] Figure 8 It is a schematic structural diagram of a pad and a workbench according to one embodiment of the present application.
[0037] Fig. 9 It is a schematic structural diagram of a processed bulging plate according to one embodiment of the present application.
[0038] Description of Reference Numerals
[0039] 1 Thin plate
[0040] 2 thick plates
[0041] 3 Takeover
[0042] 4 valves
[0043] 5 Workbench
[0044] 10 First Board
[0045] 20 Second board
[0046] 30 Reinforcement
[0047] 40 First Pipeline
[0048] 41 Pipeline valve
[0049] 50 Second Pipe
[0050] 60 Pad
[0051] 61 Accommodation chamber
[0052] 70 Workbench
[0053] 80 Clamping part DETAILED DESCRIPTION
[0054] The exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not intended to exhaust all possible methods of the present application, nor to limit the scope of the present application.
[0055] The embodiment of the present application provides a heat exchanger expansion plate processing structure (hereinafter, sometimes referred to as "processing structure"), such as Figure 6 and Figure 7 As shown, it may include a first plate 10 , a second plate 20 , a reinforcement member 30 , a first pipe 40 , a backing plate 60 , a tooling table 70 and a pressing portion 80 .
[0056] Specifically, the first plate 10 and the second plate 20 can form a heat exchanger expansion plate. The first plate 10 can be arranged overlapping with the second plate 20, and the edge of the first plate 10 can be connected to the second plate 20 (connected all around), especially welded. The first plate 10 can be bulged and deformed, and the strength of the first plate 10 can be less than the strength of the second plate 20. Preferably, the material of the first plate 10 and the second plate 20 can be the same, and the thickness of the first plate 10 can be less than the thickness of the second plate 20. Exemplarily, the material of the first plate 10 and the second plate 20 can be stainless steel, especially 304 stainless steel.
[0057] like Figure 4 and Figure 5 As shown, the side of the second plate 20 that is not connected to the first plate 10 can be connected to the first pipe 40, and the first pipe 40 can be used to inject an expansion medium (such as gas, water, oil, etc.) into the heat exchanger expansion plate (i.e., the first plate 10 and the second plate 20). It can be understood that the heat exchanger expansion plate in this embodiment can be applied to expansion plate manufacturing methods such as high-pressure gas expansion, water injection expansion and oil injection expansion. Preferably, the high-pressure gas expansion method is adopted in this embodiment, and a pipeline valve 41 can be provided at one end of the first pipe 40 that is not in contact with the second plate 20, which is used to connect a high-pressure gas source to fill the heat exchanger expansion plate with high-pressure gas. Preferably, the first pipe 40 can be welded to the second plate 20. In this embodiment, the first pipe 40 is only used as a temporary pipe for the process, and the first pipe 40 can be separated from the second plate 20 after the heat exchanger expansion plate is completed.
[0058] like Figure 4 , Figure 5 and Figure 7 As shown, the reinforcement member 30 can be arranged on the side of the second plate 20 that is not connected to the first plate 10, so as to reduce or avoid deformation of the second plate 20 during the bulging process. Preferably, the reinforcement member 30 can be composed of channel steel. Figure 5 As shown, multiple channel steels can be connected to form an I-shape, that is, multiple channel steels can be a structure that intersects vertically and horizontally, and the specific structure of the reinforcement 30 can be set according to actual needs. The reinforcement 30 can be connected to the second plate 20 in the form of spot welding, and the spot welding form can facilitate the separation of the reinforcement 30 from the second plate 20 after bulging.
[0059] Preferably, Figure 4 As shown, the height of the reinforcement 30 (i.e., the height of the reinforcement 30 in a direction perpendicular to the second plate 20) may be higher than the height of the first pipe 40 (i.e., the height of the first pipe 40 in a direction perpendicular to the second plate 20), so that when the pressing portion 80 is pressed against the reinforcement 30, it will not affect the first pipe 40. The first pipe 40 may be perpendicular to the second plate 20.
[0060] The backing plate 60 can be connected to the tooling table 70. The connection between the backing plate 60 and the tooling table 70 can be welding connection, bolt connection, etc. The thickness of the backing plate 60 can be set according to the preset expansion height of the heat exchanger expansion plate. Figure 7 and Figure 8 As shown, the pad 60 may be a "U-shaped" pad, that is, the middle area of the pad 60 may form a receiving cavity 61 (it can be understood that the receiving cavity 61 here may include a space formed by penetrating the pad 60, or may include a space formed by a groove of the pad 60) to at least partially receive the first plate 10. For example, Figure 7 As shown, a receiving cavity 61 is formed in the middle of the backing plate 60, and the receiving cavity 61 can receive the first plate 10 (including the first plate 10 before and after expansion). In another embodiment, the edge of the first plate 10 can be attached to the backing plate 60, and after the middle of the first plate 10 is expanded, the expanded area of the first plate 10 can be received in the receiving cavity 61 in the middle of the backing plate 60.
[0061] like Figure 6 and Figure 7 As shown, the tooling table 70 can be set at the operating position (station) of a pressure device such as a hydraulic press. The heat exchanger bulging plate composed of the first plate 10 and the second plate 20 is placed on the backing plate 60, so that at least part of the first plate 10 is accommodated in the accommodating cavity 61 of the backing plate 60. The clamping portion 80 (for example, the clamping portion 80 of the hydraulic press) can be clamped to the opposite surface of the reinforcement 30 connected to the second plate 20. Through the clamping effect of the clamping portion 80 and the tooling table 70 on the heat exchanger bulging plate (especially its second plate 20), the deformation of the heat exchanger bulging plate (especially its second plate 20) during the bulging forming process can be reduced or avoided. It can be understood that the clamping portion 80 can be a part of the hydraulic press or a separate clamping structure.
[0062] It can be understood that when the heat exchanger expansion plate is expanded (i.e., when the expansion medium is filled between the first plate 10 and the second plate 20 through the first pipe 40), the first plate 10 that is expanded and deformed can be pressed against the bottom surface of the accommodating cavity 61 after expansion (under the pressing action of the pressing part) (including when the accommodating cavity is through, the first plate is pressed against the workbench; and when the accommodating cavity is non-through, the first plate is pressed against the inner bottom surface of the accommodating cavity 61). The bottom surface of the accommodating cavity 61 can hinder the expansion deformation of the first plate 10 and prevent the deformation degree of the first plate 10 from exceeding the allowable tolerance. At the same time, the hindering effect of the bottom surface of the accommodating cavity 61 on the first plate 10 can also improve the uniformity of the expansion height of its expansion deformation.
[0063] like Fig. 9 As shown, after the expansion deformation is completed, the heat exchanger expansion plate can be taken out from between the tooling table 70 and the pressing part 80, and then the reinforcement 30 and the first pipe 40 connected to the second plate 20 can be separated from the second plate 20. The second pipe 50 can be connected to the side of the first plate 10 away from the second plate 20, and the second pipe 50 can be used to pass the heat exchange medium into the expanded heat exchanger expansion plate.
[0064] The embodiment of the present application also provides a method for processing a heat exchanger expansion plate, which may include the following steps:
[0065] The edges of the first plate 10 and the second plate 20 are connected, in particular, they can be welded. A hole can be made on the surface of the second plate 20 facing away from the first plate 10 in order to connect the first pipe 40.
[0066] The first plate 10 and the second plate 20 can be laser welded according to the preset honeycomb plate connection position and flow channel arrangement, so as to form a honeycomb expanded plate after subsequent expansion.
[0067] The first pipe 40 is connected (especially welded) to the above-mentioned opening position of the second plate 20 , and the end of the first pipe 40 not connected to the second plate 20 is connected (especially welded) to the pipe valve 41 .
[0068] The reinforcement member 30 is connected to the surface of the second plate 20 facing away from the first plate 10 (particularly, it may be welded).
[0069] A tooling table 70 is provided at the operating position of the hydraulic press (or a tooling table provided with the hydraulic press can also be used), and the backing plate 60 can be connected to the tooling table 70 .
[0070] Place the heat exchanger expansion plate (the connected first plate and the second plate) with the first plate 10 facing downward (the first plate 10 facing the workbench 70), so that the second plate 20 (edge) or the first plate 10 (edge) abuts against the upper surface of the pad 60. The expansion area of the first plate 10 can be aligned with the middle accommodating cavity 61 of the "U-shaped" pad 60 (including the first plate 10 being completely placed in the accommodating cavity 61 of the pad 60 and only the expansion area of the first plate being placed in the accommodating cavity 61 of the pad 60).
[0071] The clamping part 80 of the hydraulic press can abut against the reinforcement 30 and press the reinforcement 30 downward (toward the heat exchanger expansion plate) to compress the reinforcement 30, the second plate 20 and the pad 60 to reduce or avoid unnecessary deformation of the heat exchanger expansion plate (especially the second plate 20) during the subsequent expansion process.
[0072] The pipeline valve 41 can be connected to a high-pressure gas source (it can also be connected to an expansion medium such as water or oil), and pass high-pressure gas into the expansion plate of the heat exchanger (between the first plate and the second plate) through the first pipeline, so that the pressure in the expansion plate of the heat exchanger is increased to a preset pressure and then maintained for a certain period of time.
[0073] After holding the pressure for a certain period of time, the heat exchanger bulging plate is bulged. The bulging height of the heat exchanger bulging plate can be detected by using an altimeter. The qualified condition of the heat exchanger bulging plate product is that the height of more than 80% of the bulging area of the heat exchanger bulging plate reaches the height range required by the process. The bulged heat exchanger bulging plate can be inspected for size to check whether its maximum deformation meets the process requirements.
[0074] The first pipe 40 connected to the second plate 20 is separated from the second plate 20 , and the corresponding opening of the second plate 20 is closed, in particular, by repair welding.
[0075] A hole is opened on the first plate 10 of the bulged heat exchanger plate to connect (especially weld) the second pipe 50 for introducing heat exchange medium into the bulged heat exchanger plate.
[0076] A plurality of heat exchanger expansion plates can be assembled and connected to form a heat exchanger housing. It can be understood that the plurality of heat exchanger expansion plates can support each other after being connected to form an overall rigidity that can prevent deformation of a single heat exchanger expansion plate. At this time, the reinforcement 30 connected to the second plate 20 can be removed. When the reinforcement 30 is welded (spot welded) to the second plate 20, the weld point can be polished smooth after the reinforcement 30 is removed.
[0077] It can be understood that there is no strict restriction on the order of the above steps, and the order of some steps can be adjusted according to actual needs.
[0078] The heat exchanger expansion plate processing structure and processing method provided in the present application are particularly suitable for box-type expansion plate heat exchangers with larger sizes, but its application scope is not limited to this.
[0079] The heat exchanger bulging plate processing structure and processing method provided in the embodiment of the present application, after the heat exchanger bulging plate is bulged and formed, the second plate 20 (a plate with greater strength, usually with greater thickness) has less deformation, and the first plate 10 (a plate with less strength, usually with less thickness) has better uniformity of bulging height. The following is a comparative test of the technical solution in the background technology and the technical solution in the embodiment of the present application with the bulging height of 5±0.5mm (millimeter) and the flatness not greater than 2mm / m (millimeter per meter) as the process requirements, and the results are as follows:
[0080] Comparative Example: The second plate has a size of 3370mm*1350mm, a plate thickness of 8mm, and a required bulging height of 5±0.5mm. The bulging is performed using the technical solution of the background technology. After bulging, the maximum bulging deformation of the heat exchanger bulging plate is 20mm (the bulging deformation is an undesirable and difficult to repair deformation of the entire plate), and the bulging height of the first plate is between 3.8mm and 5.4mm.
[0081] First experimental example: The second plate has a size of 3370mm*1350mm, a plate thickness of 8mm, and a required bulging height of 5±0.5mm. The technical solution of the present application is used for bulging. After bulging, the maximum convex deformation of the heat exchanger bulging plate is 6mm, and the bulging height of the first plate is between 4.8mm and 5.2mm.
[0082] Second experimental example: The second plate has a size of 4288mm*1703mm, a plate thickness of 8mm, and a required bulging height of 5±0.5mm. The technical solution of this application is used for bulging. After bulging, the maximum convex deformation of the heat exchanger bulging plate is 7mm, and the bulging height of the first plate is between 4.8mm and 5.2mm.
[0083] The third experimental example: the second plate has a size of 4888mm*1703mm, a plate thickness of 8mm, and a required bulging height of 5±0.5mm. The technical solution of the present application is used for bulging forming. After bulging forming, the maximum convex deformation of the heat exchanger bulging plate is 8mm, and the bulging height of the first plate is between 4.8mm and 5.2mm.
[0084] The experimental results of the above experimental examples show that the maximum deformation of the heat exchanger bulging plate processing structure and processing method provided by the embodiment of the present application is small, and the uniformity of the bulging height is good, so that the heat exchanger bulging plate has better processability.
[0085] The following briefly describes some of the beneficial effects of the above-mentioned embodiments of the present application.
[0086] The embodiments of the present application provide a heat exchanger bulging plate processing structure and processing method that can reduce or avoid unnecessary deformation of the heat exchanger bulging plate during bulging forming, and can improve the uniformity of the bulging height of the heat exchanger bulging plate.
[0087] It is understood that in the present application, when the number of parts or components is not particularly limited, the number may be one or more, and the multiple here means two or more. For the case where the number of parts or components shown in the drawings and / or described in the specification is a specific number such as two, three, four, etc., the specific number is usually exemplary and not restrictive, and it can be understood as multiple, that is, two or more, but this does not mean that the present application excludes the case of one.
[0088] It should be understood that the above embodiments are merely exemplary and are not intended to limit the present application. Those skilled in the art may make various modifications and changes to the above embodiments under the guidance of the present application without departing from the scope of the present application.
Claims
1. A heat exchanger bulging plate processing structure, characterized in that: The invention comprises a first plate (10), a second plate (20), a reinforcing member (30), a first pipe (40), a backing plate (60) and a pressing portion (80), The first plate (10) and the second plate (20) are arranged in an overlapping manner, and the edge of the first plate (10) is connected to the second plate (20) to form a heat exchanger expansion plate. The strength of the first plate (10) is less than that of the second plate (20), and the first plate (10) can be expanded and deformed. The side of the second plate (20) facing away from the first plate (10) is connected to the reinforcement (30) and the first pipe (40), The pressing portion (80) is attached to a side of the reinforcing member (30) that is away from the second plate (20) and is used to press the reinforcing member (30). A receiving cavity (61) is formed in the middle of the pad (60), and the bulging area of the first plate (10) is aligned with the receiving cavity (61). The receiving cavity (61) can at least partially receive the first plate (10) after bulging. After bulging, the first plate (10) at least partially abuts against the bottom surface of the receiving cavity (61).
2. The heat exchanger bulging plate processing structure according to claim 1, characterized in that: It also comprises a tooling table (70), the backing plate (60) is connected to the tooling table (70), and the tooling table (70) is arranged at the operating position of the hydraulic press.
3. The heat exchanger bulging plate processing structure according to claim 1, characterized in that: The end of the first pipeline (40) not connected to the second plate (20) is provided with a pipeline valve (41) for introducing high-pressure gas into the heat exchanger expansion plate.
4. The heat exchanger bulging plate processing structure according to claim 1, characterized in that: The first plate (10) and the second plate (20) are made of the same material, and the thickness of the first plate (10) is smaller than the thickness of the second plate (20).
5. The heat exchanger bulging plate processing structure according to claim 1, characterized in that: The reinforcement member (30) comprises a plurality of channel steels, and the plurality of channel steels form a structure intersecting vertically and horizontally.
6. The heat exchanger bulging plate processing structure according to claim 1, characterized in that: The pad (60) forms a "U-shaped" structure with a through center; the size of the first plate (10) is smaller than the size of the second plate (20); the first plate (10) can be completely accommodated in the accommodating cavity (61) of the pad (60); and the second plate (20) is attached to the pad (60).
7. The heat exchanger bulging plate processing structure according to claim 1, characterized in that: The height of the reinforcing member (30) in a direction perpendicular to the second plate (20) is greater than the height of the first pipe (40) in a direction perpendicular to the second plate (20).
8. A method for processing a heat exchanger bulging plate, characterized in that: Applicable to the heat exchanger bulging plate processing structure according to any one of claims 1 to 7, The processing method comprises: The first plate (10) and the second plate (20) are connected by welding, A hole is opened on the side of the second plate (20) facing away from the first plate (10) and the first pipe (40) is connected thereto, and the reinforcing member (30) is connected to the side of the second plate (20) facing away from the first plate (10). The first plate (10) and the second plate (20) that have been connected are placed against the upper surface of the backing plate (60), with the bulging area of the first plate (10) aligned with the accommodating cavity (61) of the backing plate (60). The pressing portion (80) abuts against the reinforcing member (30) to press the reinforcing member (30), the second plate (20) and the backing plate (60) to reduce deformation of the second plate (20) during bulging. An expansion medium is introduced into the heat exchanger expansion plate through the first pipe (40) to expand the heat exchanger expansion plate into shape.
9. The heat exchanger bulging plate processing method according to claim 8, characterized in that: After the bulging forming, the bulging height of the heat exchanger bulging plate is detected by using a height gauge, and one of the product qualification conditions is that the height of more than 80% of the bulging area of the heat exchanger bulging plate meets the process requirements. Check whether the maximum deformation of the bulging plate of the heat exchanger meets the process requirements.
10. The heat exchanger bulging plate processing method according to claim 8, characterized in that: After the bulging forming is completed, the reinforcement member (30), the first pipe (40) and the second plate (20) are separated. A second pipe (50) is connected to a side of the first plate (10) facing away from the second plate (20) for introducing a heat exchange medium into the heat exchanger expansion plate.