Heat exchanger bulging plate machining structure
By using the overlapping arrangement of the first plate and the second plate and the connection of the reinforcement in the heat exchanger expansion plate, combined with the design of the accommodating cavity and the compression part of the pad, the deformation and height unevenness during the processing of the expansion plate are solved, and a better processing effect is achieved.
Patent Information
- Application Number
- CN202422426745.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-08
AI Technical Summary
In the processing of the heat exchanger bulging plate, especially in the processing of the large heat exchanger bulging plate, undesirable deformation and uneven bulging height are prone to occur.
A heat exchanger bulging plate processing structure is adopted, including a first plate, a second plate, a reinforcement, a first pipe, a pad plate and a pressing part. Through the overlapping arrangement of the first plate and the second plate and the connection of the reinforcement, the adaptation of the accommodating cavity and the pressing part of the pad plate can reduce deformation and improve the uniformity of the bulging height.
It effectively reduces the deformation of the bulging plate during processing and improves the uniformity of the bulging height. It is especially suitable for large heat exchanger box panels.
Smart Images
Figure CN223210352U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of expansion plate processing, and in particular to a heat exchanger expansion plate processing structure. Background Art
[0002] The expansion plates of heat exchangers typically have a sandwich structure, which allows for heat exchange by passing a cooling or heating medium (collectively referred to as a heat exchange medium) through the interlayer. During the processing of heat exchanger expansion plates, especially large ones, the plates can experience undesirable and difficult-to-correct deformation, and ensuring uniform expansion height is difficult.
[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 can be a honeycomb expansion plate. The expansion plate processing structure can 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 together, and according to the preset honeycomb connection position and flow channel arrangement, the thin plate 1 and the thick plate 2 are laser welded at the preset position. The thin plate 1 can be formed with 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, with the thick plate 2 in contact with the workbench 5. High-pressure gas is injected into the space between the thin plate 1 and the thick plate 2 through the valve 4 and pipe 3. After the internal pressure reaches a preset pressure, the pressure is maintained for a certain period of time, and then the gas source is turned off and the pressure is released to complete the bulging process.
[0004] The heat exchanger bulging plate manufactured according to the above technical solution is prone to bending and deformation at the edges. In particular, the entire heat exchanger bulging plate (including the thin plate 1 and the thick plate 2) is prone to difficult-to-repair bending and warping. The thin plate 1 is also prone to uneven bulging height after pressurization. Utility Model Content
[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 that can effectively reduce or avoid bending deformation of the bulging plate during processing and at the same time 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 and the first pipe.
[0009] The pressing portion is pressed against a side of the reinforcement member facing away from the second plate to press the reinforcement member.
[0010] A receiving cavity is formed in the middle of the pad, and the bulging area of the first plate is aligned with the receiving cavity. The receiving cavity can at least partially accommodate the first plate after bulging. After bulging, the first plate at least partially rests against the bottom surface of the receiving cavity.
[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 an operating position of a 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 embodiment, 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 embodiment, the reinforcement member includes a plurality of channel steels, and the plurality of channel steels form a structure intersecting vertically and horizontally.
[0015] In at least one possible embodiment, the pad forms a "U-shaped" structure with a through center, 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 embodiment, 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 heat exchanger bulging plate processing structure 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 larger heat exchanger box plates. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a structural schematic diagram of a bulging plate processing structure known to the inventor.
[0019] Figure 2 This is a schematic structural diagram of a bulging plate known to the inventor before inflation.
[0020] Figure 3 This is another structural schematic diagram of a bulging plate processing structure known to the inventor.
[0021] Figure 4 It is a partial structural schematic diagram of a bulging plate processing structure according to one embodiment of the present application.
[0022] Figure 5 It is another partial structural schematic diagram of the bulging plate processing structure according to one embodiment of the present application.
[0023] Figure 6 It is a structural schematic diagram of a bulging plate processing structure according to one embodiment of the present application.
[0024] Figure 7 It is a cross-sectional schematic diagram of a bulging plate processing structure according to one embodiment of the present application.
[0025] Figure 8 It is a structural schematic diagram of a pad and a tooling table according to one embodiment of the present application.
[0026] Figure 9 It is a schematic structural diagram of a processed bulging plate according to one embodiment of the present application.
[0027] Description of Reference Numerals
[0028] 1 thin plate
[0029] 2 thick plates
[0030] 3 Takeover
[0031] 4 valves
[0032] 5 workbench
[0033] 10 First Board
[0034] 20 Second Board
[0035] 30 reinforcement
[0036] 40 First Pipeline
[0037] 41 Pipeline Valve
[0038] 50 Second Pipeline
[0039] 60 pad
[0040] 61 Accommodation cavity
[0041] 70 Workbench
[0042] 80 Clamping part DETAILED DESCRIPTION
[0043] The following describes exemplary embodiments of the present application 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 embodiments of the present application, nor to limit the scope of the present application.
[0044] 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 .
[0045] 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 around the entire perimeter), in particular, they can be welded. The first plate 10 can form an expansion deformation, and the strength of the first plate 10 can be less than the strength of the second plate 20. Preferably, the first plate 10 and the second plate 20 can be made of the same material, 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, in particular 304 stainless steel.
[0046] 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 pipe valve 41 can be provided at the end of the first pipe 40 that is not in contact with the second plate 20, for connecting 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 process use, and the first pipe 40 can be separated from the second plate 20 after the heat exchanger expansion plate is completed.
[0047] like Figure 4 、 Figure 5 and Figure 7As shown, the reinforcement 30 can be provided 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 forming process. Preferably, the reinforcement 30 can be made 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 arranged in a structure that intersects vertically and horizontally. The specific structure of the reinforcement member 30 can be set according to actual needs. The reinforcement member 30 can be connected to the second plate 20 by spot welding. The spot welding method can facilitate the separation of the reinforcement member 30 from the second plate 20 after bulging.
[0048] 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) can 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 does not affect the first pipe 40. The first pipe 40 can be perpendicular to the second plate 20.
[0049] The backing plate 60 can be connected to the workbench 70. The connection between the backing plate 60 and the workbench 70 can be welding connection, bolt connection, etc. The thickness of the backing plate 60 can be set according to the preset bulging height of the heat exchanger bulging plate. Figure 7 and Figure 8 As shown, the pad 60 can be a "H"-shaped pad, that is, the middle area of the pad 60 can form a receiving cavity 61 (it can be understood that the receiving cavity 61 here can include a space formed by passing through the pad 60, and can also include a space formed by a groove in the pad 60) to at least partially accommodate the first plate 10. For example, as Figure 7 As shown, a receiving cavity 61 is formed in the middle of the backing plate 60, and the receiving cavity 61 can accommodate 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 abutted against 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 accommodated in the receiving cavity 61 in the middle of the backing plate 60.
[0050] 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 pressing portion 80 (for example, the pressing portion 80 of the hydraulic press) can be pressed to the opposite surface of the reinforcement 30 connected to the second plate 20. The pressing effect of the pressing portion 80 and the tooling table 70 on the heat exchanger bulging plate (especially its second plate 20) can reduce or avoid deformation of the heat exchanger bulging plate (especially its second plate 20) during the bulging forming process. It can be understood that the pressing portion 80 can be a part of the hydraulic press or a separate pressing structure.
[0051] 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 undergoes expansion deformation can, after expansion (under the pressing action of the pressing portion), abut against the bottom surface of the accommodating cavity 61 (including when the accommodating cavity is through, the first plate abuts against the workbench; and when the accommodating cavity is non-through, the first plate abuts 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 of the first plate 10 from exceeding the allowable tolerance. At the same time, the obstruction 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.
[0052] like Figure 9 As shown, after the expansion deformation is completed, the heat exchanger expansion plate can be removed 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. A second pipe 50 can be connected to the side of the first plate 10 facing away from the second plate 20. The second pipe 50 can be used to pass heat exchange medium into the expanded heat exchanger expansion plate.
[0053] The embodiment of the present application also provides a method for processing a heat exchanger expansion plate, which may include the following steps:
[0054] 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.
[0055] 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.
[0056] 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 .
[0057] The reinforcement member 30 is connected (particularly by welding) to the surface of the second plate 20 facing away from the first plate 10 .
[0058] 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 .
[0059] Position the heat exchanger expansion plate (the connected first and second plates) with the first plate 10 facing downward (the first plate 10 facing the workbench 70), and place (the edge of) the second plate 20 or (the edge of) the first plate 10 against the upper surface of the backing plate 60. The expanded area of the first plate 10 can be aligned with the central receiving cavity 61 of the "U-shaped" backing plate 60 (including cases where the entire first plate 10 is placed in the receiving cavity 61 of the backing plate 60, and cases where only the expanded area of the first plate is placed in the receiving cavity 61 of the backing plate 60).
[0060] The pressing part 80 of the hydraulic press can abut against the reinforcement 30 and press the reinforcement 30 downward (toward the heat exchanger expansion plate), so that the reinforcement 30, the second plate 20 and the pad 60 are compressed to reduce or avoid unnecessary deformation of the heat exchanger expansion plate (especially the second plate 20) during the subsequent expansion process.
[0061] The pipeline valve 41 can be connected to a high-pressure gas source (or can be connected to an expansion medium such as water or oil), and high-pressure gas is introduced 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.
[0062] After holding pressure for a certain period, the heat exchanger expansion plate is expanded and formed. A height gauge can be used to measure the expansion height of the heat exchanger expansion plate. A qualified heat exchanger expansion plate is considered qualified if the height of at least 80% of the expansion area of the heat exchanger expansion plate meets the process requirements. The expanded heat exchanger expansion plate can also be dimensional inspected to check whether its maximum deformation meets the process requirements.
[0063] 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.
[0064] 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.
[0065] Multiple heat exchanger expansion plates can be assembled and connected to form a heat exchanger housing. It will be appreciated that these interconnected expansion plates provide mutual support, creating overall rigidity that prevents deformation of individual expansion plates. The reinforcement 30 connected to the second plate 20 can then be removed. If the reinforcement 30 is welded (spot welded) to the second plate 20, the welds can be polished smooth after removal.
[0066] 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.
[0067] The heat exchanger expansion plate processing structure and processing method provided in this application are particularly suitable for larger box-type expansion plate heat exchangers, but their application scope is not limited to this.
[0068] The heat exchanger bulging plate processing structure and method provided in the embodiments of this application achieve minimal deformation of the second plate 20 (a stronger plate, typically thicker) after bulging, and achieves good uniformity in the bulging height of the first plate 10 (a weaker plate, typically thinner). A comparative test was conducted between the technical solutions in the background art and the technical solutions in the embodiments of this application, using a bulging height of 5±0.5 mm (millimeter) and a flatness of no more than 2 mm / m (millimeter per meter) as process requirements. The results are as follows:
[0069] Comparative Example: A second plate, measuring 3370mm x 1350mm and 8mm thick, required a bulge height of 5±0.5mm. Bulge forming was performed using the technical solution from the prior art. After bulge forming, the maximum bulge deformation of the heat exchanger bulge plate was 20mm (this bulge deformation is undesirable and difficult to repair, representing deformation of the entire plate). The bulge height of the first plate ranged from 3.8mm to 5.4mm.
[0070] Experimental Example 1: The second plate had dimensions of 3370mm x 1350mm and a thickness of 8mm. The required bulge height was 5±0.5mm. Bulge forming was performed using the technical solution of this application. After bulge forming, the maximum bulge deformation of the heat exchanger bulge plate was 6mm, and the bulge height of the first plate was between 4.8mm and 5.2mm.
[0071] Experimental Example 2: The second plate had dimensions of 4288mm x 1703mm and a thickness of 8mm. The required bulge height was 5±0.5mm. Bulk forming was performed using the technical solution of this application. After bulging, the maximum bulge deformation of the heat exchanger bulge plate was 7mm, while the bulge height of the first plate was between 4.8mm and 5.2mm.
[0072] Experimental Example 3: The second plate had dimensions of 4888mm x 1703mm and a thickness of 8mm. The required bulge height was 5±0.5mm. Bulge forming was performed using the technical solution of this application. After bulge forming, the maximum bulge deformation of the heat exchanger bulge plate was 8mm, and the bulge height of the first plate was between 4.8mm and 5.2mm.
[0073] 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.
[0074] The following briefly describes some of the beneficial effects of the above-mentioned embodiments of the present application.
[0075] 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.
[0076] It is understood that in this application, when the number of parts or components is not specifically limited, the number may be one or more, and the term "plurality" herein refers to two or more. Where the number of parts or components is shown in the drawings and / or described in the specification as a specific number, such as two, three, or four, the specific number is generally illustrative and not restrictive, and may be understood as a plurality, i.e., two or more. However, this does not mean that this application excludes the case of one.
[0077] 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 based on the teachings 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: It includes a first plate, a second plate, a reinforcement, a first pipe, a backing plate and a pressing part, 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. The second plate has a side facing away from the first plate connected to the reinforcement and the first pipe. The pressing portion is pressed against a side of the reinforcement member facing away from the second plate to press the reinforcement member. A receiving cavity is formed in the middle of the pad, and the bulging area of the first plate is aligned with the receiving cavity. The receiving cavity can at least partially accommodate the first plate after bulging. After bulging, the first plate at least partially rests against the bottom surface of the receiving cavity.
2. The heat exchanger bulging plate processing structure according to claim 1, characterized in that: It also includes a tooling table, the pad is connected to the tooling table, and the tooling table 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 pipe that is not connected to the second plate is provided with a pipe valve 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 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.
5. The heat exchanger bulging plate processing structure according to claim 1, characterized in that: The reinforcement member includes 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 forms a "U-shaped" structure with a through center. The size of the first plate is smaller than that 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.
7. The heat exchanger bulging plate processing structure according to claim 1, characterized in that: A height of the reinforcement in a direction perpendicular to the second plate is greater than a height of the first duct in a direction perpendicular to the second plate.