A cooling device based on a copper-steel composite material

Abstract

This application discloses a cooling device based on copper-steel composite material. The cooling device includes a base plate, a cooling assembly, and an inlet pipe and an outlet pipe connected to the cooling assembly. The cooling assembly mainly includes a vertical cooling plate, which is fixed to the base plate with the planes of the two plates perpendicular to each other. Electrical components are installed on the portions of the base plate located on both sides of the vertical cooling plate and are pressed against the vertical cooling plate. The vertical cooling plate includes a steel layer, a first copper layer, and a second copper layer. Along the length of the steel layer, the cross-section of the steel layer in its thickness direction is "T"-shaped. The horizontal portion of the "T" is the first steel layer, and the vertical portion is the second steel layer. The second steel layer is sandwiched between the first and second copper layers, and at least one end side of each of the first and second copper layers is fixedly connected to the first steel layer. The cooling device based on copper-steel composite material proposed in this application can improve heat exchange efficiency.

Description

Technical Field

[0001] This application relates to the field of industrial equipment heat dissipation technology, and in particular to a cooling device based on copper-steel composite material. Background Technology

[0002] Currently, cooling devices are needed in various industrial equipment applications, such as coal mining machine control boxes, mining machinery, rail transportation, and new energy equipment, to cool down high-power frequency converters.

[0003] In existing water-cooled cooling devices, the cooling plates are often integrated into the bottom plate of the electrical control box. For example, patent document CN118137350A discloses an electrical control box for a coal mining machine, in which the water-cooling structure is concentrated on the bottom plate of the electrical control box. This type of electrical control box, which concentrates the cooling structure on the bottom plate, often has the following drawbacks:

[0004] Firstly, structurally, this results in a longer heat dissipation path in the cooling structure, which can easily lead to blockage of the cooling channels and affect the lifespan of the frequency converter.

[0005] Secondly, in terms of maintenance, the integrated design requires disassembling the entire electrical control box to replace cooling components, increasing downtime costs.

[0006] Third, it has poor adaptability; the fixed layout is difficult to adapt to equipment with different power or limited space.

[0007] Furthermore, in the coal mining industry, the underground environment is characterized by humidity, high temperatures, and abundant dust. Unlike the air-cooled structure used in general industrial frequency converters, the frequency converters in electric traction coal mining machines, due to their sealed control boxes that do not exchange air with the outside, must employ a water-cooled cooling system. This water-cooled system typically uses circulating cooling water to dissipate the heat generated by the frequency converter during operation, ensuring it operates at a suitable temperature. However, existing cooling systems may not be able to efficiently dissipate heat in this complex environment, leading to excessively high frequency converter temperatures, which can negatively impact its performance and lifespan. Utility Model Content

[0008] To address the technical problems existing in the prior art, this application proposes a cooling device based on copper-steel composite material. By erecting the cooling plate of the integrated cooling structure on the electrical component mounting base plate, the electrical components to be cooled can be installed on both sides of the vertical cooling plate. This not only improves the heat exchange efficiency but also increases the flexibility of electrical component installation. Furthermore, it can reduce the length of the cooling water channel and lower the probability of cooling water channel blockage while ensuring heat exchange efficiency.

[0009] This application provides a cooling device based on copper-steel composite material, comprising a housing, a cooling assembly, and an inlet and outlet pipe connected to the cooling assembly. The housing includes a bottom plate, a top plate, and side panels connected to each other. The cooling assembly mainly includes a vertical cooling plate, with its upper and lower ends fixed to the top and bottom plates respectively, and the vertical cooling plate being perpendicular to the planes of the top and bottom plates. The vertical cooling plate includes a steel layer, a first copper layer, and a second copper layer. Along the length of the steel layer, the cross-section of the steel layer in its thickness direction is T-shaped, wherein the horizontal portion of the T-shape... The first steel layer is divided into two sections, and the vertical "T"-shaped section is the second steel layer. The second steel layer is sandwiched between the first copper layer and the second copper layer, and one end of each of the first copper layer and the second copper layer is fixedly connected to the first steel layer. The second steel layer has a strip-shaped hollow section, and the hollow section and the first copper layer and the second copper layer located on both sides of the hollow section form a cooling water channel. The first steel layer has a water inlet hole and a water outlet hole. The two ends of the water inlet hole are connected to the water inlet of the cooling water channel and the water inlet pipe, respectively, and the two ends of the water outlet hole are connected to the water outlet of the cooling water channel and the water outlet pipe, respectively.

[0010] Optionally, the first copper layer and the second copper layer are respectively sandwiched between the first copper layer and the second copper layer by explosive welding.

[0011] Optionally, at least one end side of each of the first copper layer and the second copper layer is fixedly connected to the first steel layer by explosive welding.

[0012] Optionally, when installing electrical components that need to be cooled, the electrical components are installed on the portions of the base plate located on both sides of the vertical cooling plate and are pressed against the vertical cooling plate.

[0013] Optionally, the vertical cooling plate is fixed to the electrical component mounting base plate by a detachable connection.

[0014] Optionally, it further includes: a protective pipe, which is connected to the side end face of the first steel layer, and a portion of the water inlet pipe and a portion of the water outlet pipe are disposed in the protective pipe.

[0015] Optionally, the protective tube has a square structure.

[0016] Optionally, the surface of the first copper layer away from the composite surface after lamination is flush with the first side surface of the second steel layer, and the surface of the second copper layer away from the composite surface after lamination is flush with the second side surface of the second steel layer, wherein the first side surface and the second side surface are two surfaces of the second steel layer that are opposite to each other along the thickness direction.

[0017] Optionally, the steel layer is made of Q345R steel plate, and the first copper layer and the second copper layer are made of T2 copper plate.

[0018] The cooling device based on copper-steel composite material proposed in this application improves cooling efficiency by vertically mounting an integrated cooling plate on an electrical component mounting base. This allows electrical components to be cooled to be installed on both sides of the vertical cooling plate. Furthermore, it reduces the length of the heat dissipation path without compromising heat dissipation efficiency, preventing blockage of the cooling channels and extending the lifespan of the cooling device. Moreover, the detachable mounting of the vertical cooling plate on the electrical component mounting base facilitates disassembly and maintenance, reducing downtime costs. Additionally, the flexible mounting of heat-dissipating electrical components on both sides of the vertical cooling plate enhances the flexibility of component installation, making the proposed cooling device highly adaptable. Attached Figure Description

[0019] The preferred embodiments of this application will now be described in further detail with reference to the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of a cooling device based on copper-steel composite material according to an embodiment of this application;

[0021] Figure 2 This is a partial structural schematic diagram of a cooling device based on copper-steel composite material according to an embodiment of this application;

[0022] Figure 3 This is a three-dimensional structural schematic diagram of a vertical cooling plate of a cooling device based on copper-steel composite material according to an embodiment of this application;

[0023] Figure 4 This is a perspective structural diagram of a vertical cooling plate of a cooling device based on copper-steel composite material according to an embodiment of this application;

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Cooling device based on copper-steel composite material; 101. Base plate; 102. Vertical cooling plate; 103. Water inlet pipe; 104. Water outlet pipe; 150. Electrical components; 1022. Steel layer; 1023. First copper layer; 1024. Second copper layer; 1025. First steel layer; 1026. Second steel layer; 1028. Hole; 160. Water inlet hole; 170. Water outlet hole; 105. Water inlet; 106. Cooling water channel; 111. Water outlet; 107. Protective pipe; 1031. First side surface; 1033. Second side surface; 1030. Surface of the first copper layer away from the composite surface; 1032. Surface of the second copper layer away from the composite surface; 1027. End side surface. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the following detailed description, reference can be made to the accompanying drawings, which form part of this application and illustrate specific embodiments of the present application. In the drawings, similar reference numerals describe substantially similar components in different figures. Specific embodiments of the present application are described in sufficient detail below to enable those skilled in the art to implement the technical solutions of the present application. It should be understood that other embodiments may also be utilized, or structural, logical, or electrical changes may be made to the embodiments of the present application.

[0028] Figure 1 This is a schematic diagram of a cooling device based on copper-steel composite material according to an embodiment of this application. Figure 2 This is a partial structural schematic diagram of a cooling device based on a copper-steel composite material according to an embodiment of this application. Figure 1 and combined Figure 2 As shown, the cooling device 100 based on copper-steel composite material includes a housing, a cooling assembly, and an inlet pipe 103 and an outlet pipe 104 connected to the cooling assembly. The housing includes a bottom plate 101, a top plate (not shown), and side panels (not shown). The cooling assembly mainly includes a vertical cooling plate 102, which is fixed to the bottom plate 101 with the planes of both plates perpendicular to each other. The top plate and the top surface of the vertical cooling plate 102 are fixedly connected. The two end faces of the side panels are fixedly connected to the top plate and the bottom plate 101, respectively. The two sides of the vertical cooling plate are used to install electrical components 150 (e.g., frequency converters) that need to be cooled. That is, when installing electrical components that need to be cooled, these electrical components 150 can be installed on the portions of the bottom plate 101 located on both sides of the vertical cooling plate 102 and pressed against the vertical cooling plate 102. This installation method not only improves the heat exchange efficiency of the cooling plate, but also increases the flexibility of electrical component installation. Furthermore, it reduces the length of the cooling channels and lowers the probability of cooling channel blockage while ensuring heat exchange efficiency.

[0029] Specifically, in Figure 1In the structure shown, since there are multiple enclosures composed of a base plate 101, a top plate, and side panels, and these enclosures are fixed to both sides of the vertical cooling plate 102, the electrical components that need to be cooled can be fixed in enclosures located at different positions according to their designed positions. In some embodiments of this application, optionally, the enclosure can also be a shell-like structure consisting of a top plate, side panels, and an electrical component mounting base plate, enclosing all the electrical components that need to be cooled inside. Considering that the main function of the enclosure is to isolate the electrical components that need to be cooled from the external environment to protect them, the structure of the enclosure for the copper-steel composite material-based cooling device of this application can be reasonably configured according to the specific usage environment, and will not be described in detail here.

[0030] The copper-steel composite cooling device proposed in this application allows for flexible arrangement of the electrical components to be cooled due to the large space on both sides of the vertical cooling plate. It can also be adapted to equipment with different power ratings or limited space. Furthermore, since the vertical cooling plate is mounted vertically on the electrical component mounting plate, both sides of the vertical cooling plate can cool the electrical components simultaneously, improving the heat exchange efficiency by at least 50% compared to traditional horizontal base plates.

[0031] Furthermore, Figure 3 This is a three-dimensional structural diagram of a vertical cooling plate of a cooling device based on copper-steel composite material according to an embodiment of this application. Figure 4 This is a perspective structural diagram of a vertical cooling plate in a cooling device based on copper-steel composite materials according to an embodiment of this application. (Combined with...) Figure 2 , Figure 3 and Figure 4 As shown, the vertical cooling plate 102 includes a steel layer 1022, a first copper layer 1023, and a second copper layer 1024, along the length direction of the steel layer 1022 ( Figure 3 The direction of the indicator line marked by the symbol L), steel layer 1022 in its thickness direction ( Figure 3 The cross-section on the direction of the indicator line marked by the symbol M is T-shaped. The horizontal portion of the T is the first steel layer 1025, and the vertical portion is the second steel layer 1026. The second steel layer 1026 is sandwiched between the first copper layer 1023 and the second copper layer 1024, and one end side 1027 of each of the first copper layer 1023 and the second copper layer 1024 is fixedly connected to the first steel layer 1025. In some embodiments of this application, optionally, the second steel layer 1026 is composite-welded to the first copper layer 1023 and the second copper layer 1024 by explosive welding and sandwiched between them; that is, the first copper layer 1023 and the second steel layer 1026 are composite-connected by explosive welding, and the second copper layer 1024 and the second steel layer 1026 are also composite-connected by explosive welding.

[0032] See also Figure 4 As shown, a strip-shaped perforation 1028 is formed in the second steel layer 1026. The perforation 1028 and the first copper layer 1023 and the second copper layer 1024 located on both sides of the perforation 1028 form a cooling water channel 106. A water inlet 160 and a water outlet 170 are formed on the first steel layer 1025. The two ends of the water inlet 160 are connected to the water inlet 105 and the water inlet pipe 103 of the cooling water channel 106, respectively. The two ends of the water outlet 170 are connected to the water outlet 111 and the water outlet pipe 104 of the cooling water channel 106, respectively. The cross-sectional dimensions and layout of the water channels in this application can be customized according to the actual needs of the working environment. By changing the cross-section, different flow rates can be adapted, and by changing the layout, different heat dissipation requirements can be achieved.

[0033] In existing technologies, long cooling channels are typically used to improve heat dissipation efficiency, which can easily lead to blockages and affect the lifespan of the frequency converter. This application addresses this by placing the cooling channels, previously located on the base plate, on a vertical mounting plate. This reduces the length of the cooling channels without affecting heat exchange efficiency; in fact, because heat can be exchanged on both sides, the efficiency is further improved. Therefore, the copper-steel composite material-based cooling device proposed in this application also reduces the probability of cooling channel blockage and extends the lifespan of the cooling device.

[0034] In some embodiments of this application, the vertical cooling plate is optionally fixed to the electrical component mounting base plate via a detachable connection. Because the vertical cooling plate is detachably mounted on the electrical component mounting base plate, it facilitates disassembly and maintenance, reducing downtime costs.

[0035] Further, see Figure 3 As shown, to protect the inlet and outlet pipes, the cooling device 100 based on copper-steel composite material further includes a protective pipe 107, which is connected to the side end face of the first steel layer 1025, and a portion of the inlet pipe 103 and a portion of the outlet pipe 104 are disposed in the protective pipe 107. In some embodiments of this application, the protective pipe 107 may optionally be a square structure.

[0036] See also Figure 3 As shown, in order to facilitate the installation of electrical components that need to be cooled, the surface 1030 of the first copper layer 1023 away from the composite surface and the first side 1031 of the second steel layer 1026 are flush. The surface 1032 of the second copper layer 1024 away from the composite surface and the second side 1033 of the second steel layer 1026 are flush. The first side 1031 and the second side 1033 are two surfaces of the second steel layer 1026 that are opposite to each other along the thickness direction.

[0037] In some embodiments of this application, optionally, the steel layer 1022 is made of Q345R steel plate, and the first copper layer 1023 and the second copper layer 1024 are made of T2 copper plate. Compared with the prior art, this application sets the heat-conducting surface of the cooling device as copper, which can further improve its heat exchange efficiency.

[0038] In summary, the cooling device based on copper-steel composite materials proposed in this application has the following advantages:

[0039] 1. The cooling device based on copper-steel composite material proposed in this application can be independent of the electrical control box (the multiple boxes on both sides of the vertical cooling plate can be regarded as different electrical control boxes). The vertical cooling plate is installed vertically, and the electrical components to be cooled can be cooled simultaneously on both sides, which improves the heat exchange efficiency by 50% compared with the traditional horizontal base plate.

[0040] 2. Modular mounting holes and standardized installation design allow for flexible combinations of single or multiple vertical cooling plates, adapting to inverters of different power ratings. Installation and disassembly are convenient, and maintenance cycles are short. The mounting holes for electrical components are arranged flexibly.

[0041] 3. Copper-steel composite cooling plate structure:

[0042] Layered structure: The total thickness is adjustable. Under normal circumstances, the total thickness can be 50mm. It adopts a sandwich structure of Q345R (material can be replaced) pressure vessel steel and T2 copper, which breaks through the heat conduction bottleneck of traditional pure steel cooling plates.

[0043] Function of the intermediate steel layer: The cross-section of the water channel can be expanded. Under normal circumstances, the steel layer is processed into a 20×30mm cross-section water channel with a pressure bearing capacity of ≥4MPa. After the composite cooling plate, the overall rigidity is strong and the bending resistance is high.

[0044] Dual-sided copper layer function: The copper layer directly contacts the heating element, improving heat transfer efficiency.

[0045] This application also proposes a method for preparing a cooling device based on copper-steel composite materials, comprising:

[0046] Step 1: Processing the steel plate to form a steel layer. The steel layer includes a first steel layer and a second steel layer of different thicknesses;

[0047] Step 2: Machining strip-shaped hollow sections on the second steel layer;

[0048] Step 3: The first copper layer is stacked on the second steel layer, and the first copper layer is bonded to the first side of the second steel layer by explosive welding. The first side of the second steel layer and the side of the first steel layer that are in contact with each other form an "L" structure.

[0049] Step 4: Flip the structure obtained in step 3 to expose the second side of the second steel layer, stack the second copper layer on the second steel layer, and fuse the second copper layer onto the second side by explosive welding. The second side and the first side are two surfaces of the second steel layer that are opposite to each other along the thickness direction.

[0050] Step 5: Mill mounting holes on two surfaces of the first steel layer, the first copper layer and the second copper layer that are opposite to each other along the thickness direction of the second steel layer, and mill inlet and outlet holes for communicating with the cooling water channel on the end side of the first steel layer, wherein the cooling water channel is formed by the hollow part and the first copper layer and the second copper layer located on both sides of the hollow part.

[0051] Step 6: Install the water inlet pipe and water outlet pipe at the positions of the water inlet and water outlet holes on the end side of the first steel layer;

[0052] Step 7: Fix the structure obtained in Step 6 onto the base plate to obtain a cooling device based on copper-steel composite material.

[0053] The first method for preparing a cooling device based on copper-steel composite material proposed in this application reduces the stress concentration problem caused by first processing a hollow structure and then explosively bonding the first copper layer, the second steel layer, and the second copper layer together to finally form a cooling water channel, thereby improving the mechanical strength of the vertical cooling plate.

[0054] This application also proposes another method for preparing a cooling device based on copper-steel composite materials, comprising:

[0055] Step 1: Process the steel plate to form a steel layer, which includes a first steel layer and a second steel layer of different thicknesses;

[0056] Step 2: The first copper layer is stacked on the second steel layer, and the first copper layer is bonded to the first side of the second steel layer by explosive welding. The first side of the second steel layer and the side of the first steel layer that are in contact with each other form an "L" structure.

[0057] Step 3: Flip the structure obtained in step 2 to expose the second side of the second steel layer, stack the second copper layer on the second steel layer, and fuse the second copper layer onto the second side by explosive welding. The second side and the first side are two surfaces of the second steel layer that are opposite to each other along the thickness direction.

[0058] Step 4: Machining strip-shaped cooling water channels inside the second steel layer and welding water channel covers (not shown in the figure);

[0059] Step 5: Mill mounting holes on two surfaces of the first steel layer, the first copper layer, and the second copper layer that are opposite to each other along the thickness direction of the second steel layer; and mill inlet and outlet holes for communicating with the cooling water channel on the end side of the first steel layer.

[0060] Step 6: Install the water inlet pipe and water outlet pipe at the positions of the water inlet and water outlet holes on the end side of the first steel layer;

[0061] Step 7: Fix the structure obtained in Step 6 onto the base plate to obtain a cooling device based on copper-steel composite material.

[0062] The second method for preparing a cooling device based on copper-steel composite material proposed in this application improves the production speed of vertical cooling plates by first composite a first copper layer, a second steel layer, and a second copper layer, then machining the cooling water channels, and welding the water channel covers to form the cooling water channels.

[0063] In summary, this application provides a cooling device based on copper-steel composite materials and its manufacturing method. The proposed cooling device, by vertically mounting an integrated cooling plate on an electrical component mounting base, allows electrical components to be cooled to be installed on both sides of the vertical cooling plate, thereby improving cooling efficiency. Furthermore, it reduces the length of the heat dissipation path without compromising heat dissipation efficiency, preventing blockage of the cooling channels and extending the lifespan of the cooling device. Moreover, since the vertical cooling plate is detachably mounted on the electrical component mounting base, it facilitates disassembly and maintenance, reducing downtime costs. Furthermore, the flexible mounting of heat-dissipating electrical components on both sides of the vertical cooling plate enhances the flexibility of component installation, making the proposed cooling device highly adaptable.

[0064] The first method proposed in this application reduces the stress concentration problem caused by first processing the hollow structure and then explosively bonding the first copper layer, the second steel layer, and the second copper layer together to form the cooling water channel, thereby improving the mechanical strength of the vertical cooling plate.

[0065] The second method proposed in this application improves the production speed of vertical cooling plates by first laminating a first copper layer, a second steel layer, and a second copper layer, then machining the cooling channels, and welding the channel covers to form the cooling channels.

[0066] The above embodiments are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art can make various changes and modifications without departing from the scope of this application. Therefore, all equivalent technical solutions should also fall within the scope of this application.

Claims

1. A cooling device based on copper-steel composite material, comprising a box, a cooling assembly, and a water inlet pipe and a water outlet pipe connected with the cooling assembly, the box comprising a bottom plate, a top plate and side panels connected with each other, characterized in that, The cooling assembly mainly includes a vertical cooling plate, with its upper and lower ends fixed to a top plate and a bottom plate, respectively, and the vertical cooling plate is perpendicular to the plane of the top plate and the bottom plate. The vertical cooling plate includes a steel layer, a first copper layer, and a second copper layer. Along the length of the steel layer, the cross-section of the steel layer in its thickness direction is "T"-shaped. The horizontal part of the "T" is the first steel layer, and the vertical part of the "T" is the second steel layer. The second steel layer is sandwiched between the first copper layer and the second copper layer, and one end side of each of the first copper layer and the second copper layer is fixedly connected to the first steel layer. The second steel layer has a strip-shaped hollow section, and the hollow section and the first copper layer and the second copper layer located on both sides of the hollow section form a cooling water channel; The first steel layer has a water inlet hole and a water outlet hole. The two ends of the water inlet hole are respectively connected to the water inlet of the cooling water channel and the water inlet pipe, and the two ends of the water outlet hole are respectively connected to the water outlet of the cooling water channel and the water outlet pipe.

2. The copper-steel composite-based cooling device according to claim 1, characterized by The first copper layer and the second copper layer are respectively sandwiched between the first copper layer and the second copper layer by explosive welding.

3. The copper-steel composite-based cooling device according to claim 2, characterized by At least one end side of each of the first copper layer and the second copper layer is fixedly connected to the first steel layer by explosive welding.

4. The copper-steel composite-based cooling device according to claim 1, characterized by When installing electrical components that require cooling, the electrical components are mounted on the portions of the base plate located on both sides of the vertical cooling plate and are pressed against the vertical cooling plate.

5. The copper-steel composite-based cooling device according to claim 1, characterized by The vertical cooling plate is fixed to the electrical component mounting base plate via a detachable connection.

6. The copper-steel composite based cooling device according to claim 1, characterized in that Also includes: A protective pipe is connected to the side end face of the first steel layer, and part of the water inlet pipe and part of the water outlet pipe are arranged in the protective pipe.

7. The copper-steel composite-based cooling device according to claim 6, characterized by The protective tube has a square structure.

8. The copper-steel composite based cooling device according to claim 1, characterized in that, The surface of the first copper layer away from the composite surface after lamination is flush with the first side of the second steel layer, and the surface of the second copper layer away from the composite surface after lamination is flush with the second side of the second steel layer. The first side and the second side are two surfaces of the second steel layer that are opposite to each other along the thickness direction.

9. The copper-steel composite based cooling device according to claim 1, characterized in that, The steel layer is made of Q345R steel plate, and the first copper layer and the second copper layer are made of T2 copper plate.

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