Light metal water cooling device for mine

Abstract

The present application belongs to the field of water cooling device of mine explosion-proof electric control box, and particularly relates to a mine light metal water cooling device; the device comprises a water inlet device, a water outlet device, a cooling liquid flow guide device, a heat dissipation base plate, a rear baffle plate and an explosion-proof flange; the heat dissipation base plate is connected to one end of a through hole of the explosion-proof flange, and the rear baffle plate is connected to the other end of the through hole; a groove is formed on the plate surface of the heat dissipation base plate facing the rear baffle plate, the cooling liquid flow guide device, the water inlet device and the water outlet device are embedded in the groove, two lead-out holes are formed on the rear baffle plate, and the water inlet device and the water outlet device are exposed from the two lead-out holes respectively; under the condition that the water cooling device meets the safety requirements of coal mines, the light metal is used as the heat dissipation base plate of the mine water cooling device, compared with the common water cooling device mainly made of steel, the heat dissipation efficiency of the water cooling device can be greatly improved, the weight of the water cooling device can be reduced, and compared with the water cooling device mainly made of copper, the weight and manufacturing cost of the water cooling device can be greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of water-cooling devices for explosion-proof electrical control boxes used in mining, and specifically relates to a water-cooling device for light metals used in mining. Background Technology

[0002] Water cooling systems are commonly used heat exchange devices in mining electrical equipment, especially in mining converters (such as explosion-proof frequency converters). Power devices generate significant heat during switching on and off, and the accumulation of heat can lead to overheating and damage. Therefore, to ensure reliable operation of power devices, a suitable heat dissipation system needs to be designed. Methane is a flammable gas commonly found in coal mines, and light metals (such as aluminum) are highly susceptible to sparks when colliding with steel. For safety reasons, the use of light metals in coal mines is severely restricted, especially in the design of water cooling systems. However, the high thermal conductivity, density, and low cost of light metals (such as aluminum) make them a preferred material in water cooling system design.

[0003] Anshan Anming Industrial Co., Ltd., as our supplier, filed a utility model patent with publication number "CN211267513U" and patent name "A Mining Explosion-proof Water-cooling Unit". This patent describes an explosion-proof water-cooling unit that uses fastening screws to fix an aluminum thermally conductive mounting base plate to a steel explosion-proof plate to achieve explosion protection. However, the explosion-proof plate only covers one side of the thermally conductive mounting base plate, leaving the sides exposed. The patented product submitted to us by Anshan Anming Industrial Co., Ltd. failed the explosion-proof test.

[0004] Therefore, the purpose of this application is to use light metal as the heat dissipation substrate of the mine water cooling device while ensuring that the water cooling device meets the safety requirements of the coal mine. By applying light metal to the mine water cooling device, the limitations of the installation position of power devices in the explosion-proof electrical control box of the mine are reduced, the heat dissipation efficiency of the water cooling device is improved, and the weight and manufacturing cost of the water cooling device are reduced. Summary of the Invention

[0005] This invention improves the water cooling device for mines, meeting explosion-proof requirements while applying a lightweight metal with high thermal conductivity and low density to the water cooling device, thereby improving the heat dissipation efficiency of the water cooling device and reducing its weight and cost.

[0006] This invention provides a water-cooling device for light metals in mining, including a water inlet device, a water outlet device, a coolant guiding device, a heat dissipation base plate, a rear plug plate, and an explosion-proof flange.

[0007] The coolant guiding device has a coolant inlet and a coolant outlet at its two ends, respectively; one end of the water inlet device is connected to the coolant inlet, and the other end serves as the interface for the outlet of the external coolant circulation system; one end of the water outlet device is connected to the coolant outlet, and the other end serves as the interface for the return port of the external coolant circulation system; the water inlet device, coolant guiding device, and water outlet device are interconnected to form a hollow, conductive cavity;

[0008] The heat dissipation base plate is connected to one end of the through hole of the explosion-proof flange, and the rear plug plate is connected to the other end of the through hole. The rear plug plate is seamlessly connected to the periphery of the through hole. The heat dissipation base plate has a groove on the plate surface facing the rear plug plate. The external cooling loop consisting of the coolant guiding device, the water inlet device, and the water outlet device is embedded in the groove. The rear plug plate has two outlet holes. The water inlet device and the water outlet device of the external cooling loop are exposed from the two outlet holes and sealed to the periphery of the holes.

[0009] Furthermore, a groove is cut into the surface of the heat dissipation substrate facing the rear end plate. The internal cooling loop, consisting of a coolant guiding device, a water inlet device, and a water outlet device, is embedded in the groove on the surface of the heat dissipation substrate facing the rear end plate. The water inlet device and the water outlet device are led out of the heat dissipation substrate along the groove on the surface of the heat dissipation substrate facing the rear end plate and sealed with the groove.

[0010] Furthermore, the heat dissipation base plate is made of aluminum alloy, the explosion-proof flange and rear end plate are made of steel, the coolant guide device is made of copper pipe, and the water inlet and outlet devices are weldable pipe joints.

[0011] Furthermore, the coolant guiding device is welded to the heat dissipation base plate, the heat dissipation base plate is bolted to the explosion-proof flange, and the rear plug plate is fully welded to the explosion-proof flange.

[0012] Furthermore, the coolant guiding device zigzags back and forth on the heat dissipation base plate and unfolds in the front and back direction. The shape of the groove on the heat dissipation base plate matches the curve of the coolant guiding device. The water inlet and water outlet devices in the inner cooling loop are perpendicular to the surface of the rear block plate.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] This invention provides a mining light metal water cooling device. Under the condition of ensuring that the water cooling device meets the safety requirements of coal mines, light metal is used as the heat dissipation substrate of the mining water cooling device. The application of light metal in mining water cooling device is successful. Compared with the currently commonly used water cooling device which is mainly made of steel, it can greatly improve the heat dissipation efficiency of the water cooling device and reduce the weight of the water cooling device. At the same time, compared with the water cooling device which is mainly made of copper, it can greatly reduce the weight and manufacturing cost of the water cooling device. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the combination of the heat dissipation substrate and the internal cooling loop.

[0016] Figure 2 This is a schematic diagram of the combination of the heat dissipation substrate and the external cooling loop.

[0017] Figure 3 This is a schematic diagram of the explosion-proof flange.

[0018] Figure 4 This is a schematic diagram of the combination of the heat dissipation substrate and the explosion-proof flange.

[0019] Figure 5 This is a schematic diagram of the rear end plate.

[0020] Figure 6 This is a schematic diagram of the combination of the rear end plate and the explosion-proof flange.

[0021] Figure 7 This is a schematic diagram of the combination of a water-cooling device and a mine explosion-proof electrical control box.

[0022] In the diagram: 1-Heat dissipation base plate; 2-Coolant flow guide device; 3-Water inlet device; 4-Water outlet device; 5-Explosion-proof flange; 6-Rear plug plate; 7-Mining explosion-proof electrical control box. Detailed Implementation

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Example 1

[0025] like Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown: The mining light metal water cooling device provided in this embodiment is a single water cooling structure, including a water inlet device 3, a water outlet device 4, a coolant guiding device 2, a heat dissipation base plate 1, a rear plug plate 6, and an explosion-proof flange 5.

[0026] The two ends of the coolant guiding device 2 are the coolant inlet and the coolant outlet, respectively; one end of the water inlet device 3 is connected to the coolant inlet, and the other end serves as the interface for the outlet of the external coolant circulation system; one end of the water outlet device 4 is connected to the coolant outlet, and the other end serves as the interface for the return port of the external coolant circulation system; the water inlet device 3, the coolant guiding device 2 and the water outlet device 4 are interconnected to form a hollow, conductive cavity.

[0027] The heat dissipation base plate 1 is connected to one end of the through hole of the explosion-proof flange 5, and the rear plug plate 6 is connected to the other end of the through hole. The rear plug plate 6 is seamlessly connected to the periphery of the through hole. The explosion-proof mating surface of the explosion-proof flange 5 is explosion-proofly connected to the explosion-proof surface of the mine explosion-proof electrical control box. The explosion-proof flange 5 and the heat dissipation base plate 1 are not explosion-proofly connected. The rear plug plate 6 and the explosion-proof flange 5 are fully welded together. A groove is cut on the surface of the heat dissipation base plate 1 facing the rear plug plate 6. The external cooling loop formed by the coolant guiding device 2, the water inlet device 3, and the water outlet device 4 is embedded in the groove. Two outlet holes are opened on the rear plug plate 6. The water inlet device 3 and the water outlet device 4 of the external cooling loop are exposed from the two outlet holes and sealed to the periphery of the holes. The surface of the heat dissipation base plate 1 facing away from the rear plug plate 6 is flat. This flat surface is located inside the mine explosion-proof electrical control box and is used to fix the power devices inside the electrical control box.

[0028] Coolant flows in from the inlet device 3, passes through the coolant guide device 2, and then flows out from the outlet device 4. During this process, the heat dissipation substrate 1, which has high thermal conductivity, absorbs the heat generated by the power device and quickly conducts the absorbed heat to the back of the heat dissipation substrate 1. The back of the heat dissipation substrate 1 is in full contact with the coolant guide device 2. The heat is quickly conducted to the internal coolant through the contact surface between the heat dissipation substrate 1 and the coolant guide device 2. At the same time, the coolant carries away the heat after flowing through the coolant guide device 2.

[0029] The coolant guiding device 2 bends back and forth on the heat dissipation base plate 1 and unfolds in the front and back direction. The shape of the groove on the heat dissipation base plate 1 matches the curve of the coolant guiding device 2. The water inlet device 3 and water outlet device 4 in the external cooling loop are perpendicular to the plate surface of the rear block plate 6, which facilitates the connection of the water inlet device 3 and water outlet device 4 with the outlet and return port of the external coolant circulation system.

[0030] The coolant guide device 2 is a single hollow tube with high thermal conductivity, formed by physical bending or connecting multiple hollow tube segments. Specifically, the coolant guide device 2 is a copper tube, the inner diameter of which should be suitable for the coolant flow rate required by the power device, and the outer diameter and length of which should be suitable for the coolant pressure and the required heat dissipation power.

[0031] The heat dissipation substrate 1 is made of a material with thermal conductivity. Specifically, the heat dissipation substrate 1 is made of aluminum alloy.

[0032] The explosion-proof flange 5 and the rear plug plate 6 are made of steel, while the water inlet device 3 and the water outlet device 4 are weldable pipe fittings. The coolant guide device 2 is welded to the heat dissipation base plate 1, and the heat dissipation base plate 1 is bolted to the explosion-proof flange 5. The bolt fixing through holes on the heat dissipation base plate 1 are countersunk holes, and the rear plug plate 6 is fully welded to the explosion-proof flange 5. The groove of the heat dissipation base plate 1 and the coolant guide device 2 are brazed or processed to ensure full contact between the heat dissipation base plate 1 and the coolant guide device 2. The two outlet holes of the rear plug plate 6 are fully welded to the water inlet device 3 and the water outlet device 4, respectively.

[0033] After completing the welding of the water cooling device, the explosion-proof mating surface of the explosion-proof flange is machined. The explosion-proof mating surface of explosion-proof flange 5 meets the requirements of GB / T 3836.2-2021 for explosion-proof surfaces. The fixing structure of the explosion-proof flange and the mine explosion-proof electrical control box meets the explosion-proof requirements of GB / T 3836.2-2021.

[0034] Example 2

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown: The mining light metal water cooling device provided in this embodiment is a single water cooling structure or a double water cooling structure; specifically, based on embodiment 1, a groove is cut on the surface of the heat dissipation base plate 1 facing the explosion-proof flange 5, and the external cooling loop formed by the coolant guiding device 2, the water inlet device 3 and the water outlet device 4 is embedded in the groove. The water inlet device 3 and the water outlet device 4 are led out along the groove to the outside of the explosion-proof flange 5 and sealed with the groove.

[0036] The power devices and the water-cooling device in Example 2 employ non-contact heat conduction. External coolant enters through the inlet device 3 in the external cooling loop, passes through the coolant guide device 2 in the external cooling loop, and then flows out through the outlet device 4. Conversely, internal coolant enters through the inlet device 3 in the internal cooling loop, passes through the coolant guide device 2 in the internal cooling loop, and then flows out through the outlet device 4. During this process, the internal coolant absorbs heat and conducts it to the heat dissipation substrate 1 through the internal circulation device. The heat dissipation substrate 1 absorbs heat and simultaneously diffuses it to the external cooling loop via thermal conduction. Meanwhile, the external coolant carries away heat as it flows through the coolant guide device 2 in the external cooling loop. Throughout this process, heat travels from the inside of the mine explosion-proof electrical control box to the outside of the mine explosion-proof electrical control box through multiple conductions.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water-cooling device for light metals used in mining, characterized in that: It includes a water inlet device (3), a water outlet device (4), a coolant guide device (2), a heat dissipation base plate (1), a rear plug plate (6), and an explosion-proof flange (5). The two ends of the coolant guiding device (2) are the coolant inlet and the coolant outlet, respectively; one end of the water inlet device (3) is connected to the coolant inlet, and the other end serves as the interface for the outlet of the external coolant circulation system; one end of the water outlet device (4) is connected to the coolant outlet, and the other end serves as the interface for the return port of the external coolant circulation system; the water inlet device (3), the coolant guiding device (2) and the water outlet device (4) are interconnected to form a hollow, conductive cavity; The heat dissipation base plate (1) is connected to one end of the through hole of the explosion-proof flange (5), and the rear plug plate (6) is connected to the other end of the through hole. The rear plug plate (6) is seamlessly connected to the periphery of the through hole. The heat dissipation base plate (1) has a groove on the plate surface facing the rear plug plate (6). The external cooling loop consisting of the coolant guide device (2), the water inlet device (3) and the water outlet device (4) is embedded in the groove. The rear plug plate (6) has two outlet holes. The water inlet device (3) and the water outlet device (4) of the external cooling loop are exposed from the two outlet holes and sealed with the periphery of the holes. The heat dissipation substrate (1) has a groove on the back side of the back block plate (6). The internal cooling loop formed by the coolant guiding device (2), the water inlet device (3) and the water outlet device (4) is embedded in the groove on the back side of the heat dissipation substrate (1). The water inlet device (3) and the water outlet device (4) are led out along the groove on the back side of the heat dissipation substrate (1) to the outside of the heat dissipation substrate (1) and are sealed with the groove on the back side of the heat dissipation substrate (1). The heat dissipation base plate (1) is bolted to the explosion-proof flange (5), and the rear end plate (6) is fully welded to the explosion-proof flange (5). The heat dissipation substrate (1) has a flat surface facing the back of the backstop plate (6). This flat surface is located inside the mine explosion-proof electrical control box and is used to fix the power devices inside the electrical control box.

2. The mining light metal water cooling device according to claim 1, characterized in that: The heat dissipation substrate (1) is made of aluminum alloy, the explosion-proof flange (5) and the rear plug (6) are made of steel, the coolant guide device (2) is made of copper pipe, and the water inlet device (3) and the water outlet device (4) are weldable pipe joints.

3. A water-cooling device for mining light metals according to claim 2, characterized in that: The coolant guiding device (2) is welded to the heat dissipation substrate (1).

4. A water-cooling device for mining light metals according to claim 2, characterized in that: The coolant guiding device (2) bends back and forth on the heat dissipation substrate (1) and unfolds in the front and back direction. The shape of the groove on the heat dissipation substrate (1) matches the curve of the coolant guiding device (2). The water inlet device (3) and water outlet device (4) in the inner cooling loop are perpendicular to the plate surface of the rear block plate (6).

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