Evaporative cooling system and power equipment

Abstract

The utility model relates to the technical field of heat dissipation, particularly provides an evaporative cooling system and power equipment, and aims to solve the problem that an existing cooling mode of the power equipment is low in safety and stability. In order to achieve the purpose, the evaporative cooling system comprises a plurality of cooling modules, each cooling module comprises one or more cooling liquid boxes, a liquid collecting pipeline connected to one end of the cooling liquid box and a gas collecting pipeline connected to the other end of the cooling liquid box, and the interior of each cooling liquid box is used for containing a phase change working medium; each gas collecting pipeline is connected with the condenser, so that a phase change working medium can enter the condenser through the gas collecting pipelines after being evaporated; the liquid inlet pipeline is connected with the condenser, and each liquid collecting pipeline communicates with the liquid inlet pipeline, so that a phase change working medium can enter each liquid collecting pipeline through the liquid inlet pipeline after being liquefied in the condenser. According to the invention, the operation safety and stability of the power equipment can be improved.

Description

Technical Field

[0001] This application relates to the field of heat dissipation technology, specifically providing an evaporative cooling system and electrical equipment. Background Technology

[0002] Currently, the heat generation of various power devices in power systems, especially medium and large-sized power equipment such as converters, rectifiers, and converter valves, has been a major concern during operation. In order to ensure the safety and stability of power equipment operation, it is necessary to keep the operating temperature of each heat-generating device within a controllable range.

[0003] Traditional air cooling methods not only suffer from low cooling efficiency, but also face significant challenges in terms of energy consumption and noise levels, which become major constraints on the development of increasingly integrated and complex electrical equipment. While liquid cooling offers improved cooling efficiency and significantly reduced noise compared to air cooling, in practical engineering applications, the forced circulation of coolant in liquid cooling systems leads to increasing operating pressures as the piping becomes more complex. This makes ensuring system connections and sealing difficult, posing substantial safety hazards and compromising the safety and stability of electrical equipment operation.

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0005] This application aims to solve the aforementioned technical problems, namely, to address the low safety and stability issues of existing cooling methods for power equipment.

[0006] In a first aspect, this application provides an evaporative cooling system comprising:

[0007] Multiple cooling modules, each of which includes one or more coolant boxes, a liquid collection pipe connected to one end of the coolant box, and a gas collection pipe connected to the other end of the coolant box, wherein the coolant box is used to contain a phase change working fluid.

[0008] A condenser, wherein each of the gas collecting lines is connected to the condenser so that the phase change working fluid, after evaporation, can enter the condenser through the gas collecting lines;

[0009] The liquid inlet pipe is connected to the condenser, and each of the liquid collection pipes is connected to the liquid inlet pipe, so that the phase change working fluid can be liquefied in the condenser and enter each of the liquid collection pipes through the liquid inlet pipe.

[0010] In one technical solution of the above-mentioned evaporative cooling system, each cooling module has multiple coolant boxes, and the multiple coolant boxes are arranged in parallel.

[0011] In one technical solution of the above-mentioned evaporative cooling system, the plurality of coolant boxes in each cooling module are distributed in a horizontal direction;

[0012] The cooling modules are distributed along the vertical direction.

[0013] In one technical solution of the above-mentioned evaporative cooling system, the evaporative cooling system further includes:

[0014] Drainage pipes are respectively connected to each of the aforementioned collection pipes;

[0015] A control valve assembly includes a first control valve and a second control valve, wherein the first control valve is connected to one end of each of the liquid collection pipes near the liquid inlet pipe, and the second control valve is connected to one end of each of the liquid collection pipes near the liquid outlet pipe;

[0016] A pump device is connected to the drain pipeline, and the pump device is capable of extracting the phase change working fluid in the cooling module when the first control valve is closed and the second control valve is open.

[0017] In one technical solution of the above-mentioned evaporative cooling system, the control valve group is composed of electrically controlled valves, and the evaporative cooling system further includes:

[0018] The controller is communicatively connected to the first control valve, the second control valve, and the pump device, and is used to control the operating status of the first control valve, the second control valve, and the pump device.

[0019] In one technical solution of the above-mentioned evaporative cooling system, the drain pipe is connected to the condenser, and the pump device is located at one end close to the condenser so as to draw the phase change working fluid in each of the cooling modules into the condenser.

[0020] In one technical solution of the above-mentioned evaporative cooling system, the control valve group consists of solenoid valves or electric ball valves.

[0021] In one technical solution of the above-mentioned evaporative cooling system, the inner wall of the coolant box is provided with a microgroove structure or a porous structure.

[0022] In a second aspect, this application provides an electrical device comprising the evaporative cooling system described in any one of the first aspects, wherein the coolant boxes are respectively attached to the heating elements of the electrical device.

[0023] In one technical solution of the aforementioned power equipment, a thermally conductive adhesive layer is provided between the coolant box and the heat-generating device.

[0024] As described above, by adopting the aforementioned technical solution, this application divides the entire evaporative cooling system into multiple cooling modules, and sets one or more coolant boxes in each cooling module. Simultaneously, a closed circulation loop is formed through inlet pipes, collection pipes, and gas collection pipes. This allows each coolant box to be adaptively installed according to the location of different heat-generating components on the power equipment, thereby meeting the heat dissipation requirements of various heat-generating components in medium and large-sized power equipment and achieving point-to-point cooling. Furthermore, this application cools power equipment based on the phase change cooling principle. Compared to traditional air cooling and liquid cooling methods, it not only improves cooling efficiency but also, because the evaporative cooling system relies on the pressure difference generated during the phase change process of the working fluid for self-circulation, it can reduce problems such as working fluid leakage caused by system operating pressure issues, thus improving the safety and stability of power equipment operation.

[0025] Furthermore, by adding drainage pipes, control valve groups, and pump devices to the evaporative cooling system, it is possible to perform "layered maintenance" on the power equipment or evaporative cooling system. When the power equipment or evaporative cooling system encounters a fault, there is no need to shut down the entire machine, thereby minimizing industrial losses caused by emergencies. Attached Figure Description

[0026] The preferred embodiments of this application are described below with reference to the accompanying drawings, in which:

[0027] Figure 1 This is a schematic diagram of an evaporative cooling system according to an embodiment of this application;

[0028] In the figure, the reference numerals refer to the following:

[0029] 1. Cooling module; 11. Coolant box; 12. Liquid collection line; 13. Gas collection line; 2. Condenser; 3. Liquid inlet line; 4. Liquid outlet line; 51. First control valve; 52. Second control valve; 6. Pump unit. Detailed Implementation

[0030] Preferred embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0031] It should be noted that in the description of this application, terms such as "upper," "lower," "left," "right," "inner," and "outer," which indicate direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. These terms are used merely for ease of description and do not indicate or imply that the relevant device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, ordinal numbers such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] Reference Figure 1 The diagram shows an evaporative cooling system according to an embodiment of the present application, which includes a cooling module 1, a condenser 2, and a liquid inlet pipe 3. Multiple cooling modules 1 are provided, and the multiple cooling modules 1 are connected in parallel between the condenser 2 and the liquid inlet pipe 3 to form a complete circulation pipeline system.

[0034] Optionally, multiple cooling modules 1 are arranged vertically, and each cooling module 1 includes a coolant box 11, a liquid collection pipe 12, and a gas collection pipe 13. The coolant box 11 is used to contain a phase change working fluid, which can be a fluorocarbon compound with a boiling point of 40℃-60℃. The specific boiling point temperature can be determined according to the optimal operating temperature of the heat-generating device to be cooled, and this application does not impose any restrictions on this. Of course, other materials with high insulation performance and low boiling point can also be used as the phase change working fluid. The number of coolant boxes 11 in each cooling module 1 can be one or more. When there are multiple coolant boxes 11, the multiple coolant boxes 11 are distributed horizontally. It should be noted that the above "horizontal direction" is not strictly limited to "multiple coolant boxes 11 must be located on the same horizontal line", as long as their general distribution is arranged horizontally. The positional relationship of adjacent coolant boxes 11 in the same cooling module 1 can be adaptively adjusted according to the specific location of the heat-generating device in the power equipment.

[0035] The coolant box 11 can be made of metal and fits tightly against the surface of the heat-generating device during application to achieve high-efficiency heat exchange. The coolant boxes 11 are arranged in the manner described above, that is, the coolant boxes 11 in the same cooling module 1 are distributed horizontally, and the cooling modules 1 are arranged vertically, so that all the coolant boxes 11 are distributed in a matrix, which can adapt to the position of different heat-generating devices in the power equipment.

[0036] The liquid collection pipe 12 is located on the lower side of the coolant box 11, and the gas collection pipe 13 is located on the upper side of the coolant box 11. Both ends of the coolant box 11 are connected to the liquid collection pipe 12 and the gas collection pipe 13, respectively. When there are multiple coolant boxes 11 in each cooling module 1, the multiple coolant boxes 11 are arranged in parallel so that the liquid working fluid can enter each coolant box 11 through the liquid collection pipe 12. At the same time, after the liquid working fluid in each coolant box 11 is heated and boiled, the gaseous working fluid can enter the gas collection pipe 13.

[0037] The condenser 2 is located on top of multiple cooling modules 1. The gas collection pipe 13 of each cooling module 1 extends upward and connects to the condenser 2, thereby allowing the gaseous working fluid or gas-liquid two-phase working fluid to move upward into the condenser 2 under the action of pressure difference. The liquid inlet pipe 3 is connected to the bottom of the condenser 2 and is connected to the liquid collection pipe 12 of each cooling module 1. The phase change working fluid entering the condenser 2 liquefies upon cooling and can then enter each liquid collection pipe 12 through the liquid inlet pipe 3.

[0038] It should be noted that the terms "connected" and "linked" in this application refer to the mechanical connection and interconnection between adjacent pipelines or functional components, so as to enable the circulation of phase change working fluid.

[0039] As described above, this application divides the entire evaporative cooling system into multiple cooling modules 1, and sets one or more coolant boxes 11 in each cooling module 1. A closed circulation loop is formed by the inlet pipe 3, the collection pipe 12, and the gas collection pipe 13, allowing each coolant box 11 to be adaptively installed according to the location of different heat-generating components on the power equipment. This meets the heat dissipation requirements of various heat-generating components in medium and large-sized power equipment, achieving point-to-point cooling. Furthermore, this application cools power equipment based on the phase change cooling principle. Compared to traditional air cooling and liquid cooling methods, it not only improves cooling efficiency but also, because the evaporative cooling system relies on the pressure difference generated during the phase change process of the working fluid for self-circulation, it reduces problems such as working fluid leakage caused by system operating pressure issues, thus improving the safety and stability of power equipment operation.

[0040] Reference Figure 1In one embodiment of this application, the evaporative cooling system further includes a drain pipe 4, a control valve assembly, and a pump device 6. The drain pipe 4 is arranged vertically and is located on a different side of the cooling module 1 relative to the inlet pipe 3. Each collecting pipe 12 is connected to the drain pipe 4. The number of control valve assemblies is the same as the number of cooling modules 1. Each control valve assembly includes a first control valve 51 and a second control valve 52. The first control valve 51 is connected to the end of each collecting pipe 12 near the inlet pipe 3, and the second control valve 52 is connected to the end of each collecting pipe 12 near the drain pipe 4. The pump device 6 is connected to the upper end of the drain pipe 4.

[0041] Under normal operating conditions, the evaporative cooling system has the first control valve 51 open and the second control valve 52 closed, allowing the liquid working fluid in the inlet pipe 3 to enter the coolant box 11 through the collection pipe 12. When the first control valve 51 of a certain cooling module 1 is closed and the second control valve 52 is open, the liquid working fluid in the inlet pipe 3 cannot enter that cooling module 1, while the liquid working fluid in that cooling module 1 can enter the drain pipe 4 through the second control valve 52. Simultaneously, the phase change working fluid in that cooling module 1 can be extracted by operating the control pump device 6.

[0042] It should be understood that for some complex electrical equipment, there are usually multiple functional modules inside, and each functional module includes multiple power devices. For the evaporative cooling system of this application, each cooling module 1 can be installed vertically in correspondence with each functional module. In this way, when it is necessary to repair a certain functional module of the electrical equipment or to test a certain cooling module 1 of the evaporative cooling system, the working state of the control valve group in the cooling module 1 or the corresponding cooling module 1 of the functional module to be repaired can be adjusted, and the liquid working fluid in the cooling module 1 can be completely extracted by the pump device 6. Then, the functional module of the electrical equipment or the cooling module 1 of the evaporative cooling system can be repaired in a targeted manner. In this way, the other cooling modules 1 of the evaporative cooling system can still operate normally to cool the other functional modules of the electrical equipment, so that the entire electrical equipment does not need to be shut down.

[0043] Of course, when it is necessary to repair two or more functional modules or cooling module 1, the working state of the control valve group corresponding to cooling module 1 can be adjusted respectively, which will not be elaborated here.

[0044] As can be seen from the above, by adding a drain pipe 4, a control valve group, and a pump device 6 to the evaporative cooling system, it is possible to achieve "layered maintenance" of the power equipment or the evaporative cooling system. When the power equipment or the evaporative cooling system encounters a fault, there is no need to shut down the entire machine, thereby minimizing industrial losses caused by emergencies.

[0045] Reference Figure 1 In one embodiment of this application, the upper end of the drain pipe 4 is connected to the condenser 2, and the pump device 6 is located at the end of the drain pipe 4 near the condenser 2. Using the above scheme, during maintenance, the phase change working fluid in the cooling module 1 can be drawn into the condenser 2, where the liquid cooling working fluid is stored. The stored liquid cooling working fluid can then return to the circulation loop during the operation of the evaporative cooling system. This allows for the reuse of the phase change working fluid, avoiding waste, and also eliminates the need for a separate liquid storage device, simplifying the configuration of the evaporative cooling system.

[0046] Optionally, the evaporative cooling system in this application may further include a controller, wherein the control valve group consists of electrically controlled valves, such as electric ball valves and solenoid valves. The controller is communicatively connected to the first control valve 51, the second control valve 52, and the pump device 6, respectively. The controller can control the operating states of the first control valve 51 and the second control valve 52 to extract the phase change working fluid from the corresponding cooling module 1 into the condenser 2. By using the above-mentioned electrically controlled method to control the drainage process, there is no need to manually adjust the operating states of the first control valve 51 and the second control valve 52, thereby improving work efficiency.

[0047] In some implementations of this application, in order to improve the boiling heat transfer effect of the evaporative cooling system, a microgroove structure or a porous structure can be provided on the inner wall of the coolant box 11, etc.

[0048] This application also discloses an electrical device including the evaporative cooling system of any of the above embodiments, wherein the coolant tank of the evaporative cooling system is respectively attached to the heat-generating devices on the electrical device. It should be noted that the electrical device described in this application includes, but is not limited to, devices such as converters and rectifiers, and can also be an electrical cabinet structure; this application does not limit its specific application scenarios.

[0049] Optionally, a thermally conductive adhesive layer can be provided between the coolant box and the heat-generating device of the power equipment. The thermally conductive adhesive layer can be made of materials such as thermally conductive silicone. In this way, the thermally conductive adhesive layer is provided between the coolant box and the heat-generating surface of the heat-generating device, which can fill the gap between the two, thereby effectively reducing the contact thermal resistance between the heat-generating device and the coolant box, and thus improving the cooling efficiency.

[0050] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. An evaporative cooling system, characterized in that, include: Multiple cooling modules, each of which includes one or more coolant boxes, a liquid collection pipe connected to one end of the coolant box, and a gas collection pipe connected to the other end of the coolant box, wherein the coolant box is used to contain a phase change working fluid. A condenser, wherein each of the gas collecting lines is connected to the condenser so that the phase change working fluid, after evaporation, can enter the condenser through the gas collecting lines; The liquid inlet pipe is connected to the condenser, and each of the liquid collection pipes is connected to the liquid inlet pipe, so that the phase change working fluid can be liquefied in the condenser and enter each of the liquid collection pipes through the liquid inlet pipe.

2. The evaporative cooling system according to claim 1, characterized in that, Each cooling module contains multiple coolant boxes, which are connected in parallel.

3. The evaporative cooling system according to claim 2, characterized in that, The multiple coolant boxes in each cooling module are distributed horizontally. The cooling modules are distributed along the vertical direction.

4. The evaporative cooling system according to any one of claims 1 to 3, characterized in that, The evaporative cooling system also includes: Drainage pipes are respectively connected to each of the aforementioned collection pipes; A control valve assembly includes a first control valve and a second control valve, wherein the first control valve is connected to one end of each of the liquid collection pipes near the liquid inlet pipe, and the second control valve is connected to one end of each of the liquid collection pipes near the liquid outlet pipe; A pump device is connected to the drain pipeline, and the pump device is capable of extracting the phase change working fluid in the cooling module when the first control valve is closed and the second control valve is open.

5. The evaporative cooling system according to claim 4, characterized in that, The control valve group consists entirely of electrically controlled valves, and the evaporative cooling system further includes: The controller is communicatively connected to the first control valve, the second control valve, and the pump device, and is used to control the operating status of the first control valve, the second control valve, and the pump device.

6. The evaporative cooling system according to claim 4, characterized in that, The drain pipe is connected to the condenser, and the pump device is located at one end near the condenser so as to draw the phase change working fluid in each of the cooling modules into the condenser.

7. The evaporative cooling system according to claim 5, characterized in that, The control valve groups are all solenoid valves or electric ball valves.

8. The evaporative cooling system according to claim 1, characterized in that, The inner wall of the coolant box is provided with a microgroove structure or a porous structure.

9. An electrical device, characterized in that, The system includes the evaporative cooling system according to any one of claims 1 to 8, wherein the coolant boxes are respectively attached to the heating elements of the electrical equipment.

10. The power equipment according to claim 9, characterized in that, A thermally conductive adhesive layer is provided between the coolant box and the heating element.

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