Excitation variable current cabinet heat dissipation loop system and excitation variable current cabinet

Abstract

The utility model relates to power electronic heat dissipation technical field especially relates to a kind of excitation current conversion cabinet heat dissipation loop system and excitation current conversion cabinet, excitation current conversion cabinet heat dissipation loop system includes cabinet, excitation thyristor, liquid gold cold plate, pipeline assembly, gear pump, quick coupling, radiator, liquid storage tank and liquid metal;Liquid gold cold plate is applied to the outer surface of excitation thyristor, absorbs its heat;Loop system component is all connected using pipeline assembly;Quick coupling is located at the import and export side of radiator and liquid gold cold plate import and export side;Liquid storage tank stores liquid metal;Gear pump is used to drive liquid metal;Using the high thermal conductivity of liquid metal improves the heat exchange efficiency of excitation thyristor heat dissipation loop, substantially reduces the additional power consumption required for heat dissipation, increases the number of thyristor in single cabinet, effectively reduces cabinet volume;Excitation current conversion cabinet adopts fully-enclosed cabinet design, avoids the entry of dust in air to influence the operation of electronic components.

Description

Technical Field

[0001] This utility model belongs to the field of power electronic heat dissipation technology, and in particular relates to a heat dissipation circuit system for an excitation converter cabinet and an excitation converter cabinet. Background Technology

[0002] With the iterative upgrades of electronic products, the power density and integration of electronic components in server racks are becoming increasingly higher. Existing excitation converter cabinets are still air-cooled, and the air-cooled heat sinks for the thyristors require a large volume within the cabinet.

[0003] In air-cooled excitation converter cabinets, the cooling fan is located at the bottom of the cabinet to provide airflow for the air-cooled heat sink inside. Firstly, the cooling effect is poor, requiring a significant increase in fan power consumption. Secondly, dust, due to static electricity, will adhere to electronic components such as thyristors, greatly increasing operational risks.

[0004] New heat dissipation technologies, such as gas-liquid two-phase cooling circuit systems, while possessing extremely high heat exchange efficiency, suffer from a sharp increase in resistance and flow instability due to the phase change of the working fluid. This exacerbates the uneven flow of the parallel cold plates during two-phase system operation. Furthermore, manufacturers of electronic products currently housed in cabinets have high requirements for the maintainability of their cooling systems. The high internal pressure during gas-liquid two-phase circuit operation necessitates sophisticated quick-connect fittings for maintenance and carries significant risks.

[0005] With the requirements of the national "dual-carbon" economy and the demand for maintainability from manufacturers, the advantages of liquid metal heat dissipation circuit systems, such as high integration, strong heat dissipation capacity, and increased product maintainability, have become increasingly prominent. Liquid metal materials are currently widely used in thermal conductive materials, but due to the gradual increase in heat flux density of various chips and power system components, the application of liquid metal technology in heat dissipation circuits urgently needs further development. Utility Model Content

[0006] In view of this, the present invention aims to provide a heat dissipation circuit system for an excitation converter cabinet and an excitation converter cabinet. The high thermal conductivity of liquid metal improves the heat exchange efficiency of the excitation thyristor heat dissipation circuit, significantly reducing the additional power consumption required for heat dissipation, such as the power consumption of fans and pumps, and increasing the number of thyristors in a single cabinet, effectively reducing the cabinet volume. Furthermore, the liquid metal circuit in the cabinet is connected by quick connectors, which greatly improves the maintainability of the system. The cabinet can adopt a fully enclosed cabinet design to prevent dust in the air from affecting the operation of electronic components.

[0007] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0008] This utility model provides a heat dissipation circuit system for an excitation converter cabinet, which includes a cabinet 1, an excitation thyristor 2, a liquid metal cold plate 3, a pipeline assembly 4, a gear pump 5, a quick connector 6, a radiator 7, a liquid storage tank 9, and liquid metal 10.

[0009] The liquid metal cooling plate 3 is attached to the outer surface of the excitation thyristor 2 to absorb the heat of the excitation thyristor 2; the circuit system assembly includes the excitation thyristor 2, the liquid metal cooling plate 3, the gear pump 5, the radiator 7, and the liquid storage tank 9; all components in the circuit system assembly are connected by the pipeline assembly 4;

[0010] The excitation thyristor 2, the liquid metal cooling plate 3, part of the pipeline assembly 4, the gear pump 5 and the liquid storage tank 9 are all located inside the cabinet 1;

[0011] The heat sink 7 is located on the outside of the cabinet 1;

[0012] The quick connector 6 is located on the inlet and outlet sides of the radiator 7 and the inlet and outlet sides of the liquid metal cold plate 3; the liquid storage tank 9 stores the liquid metal 10; the gear pump 5 is used to drive the liquid metal 10.

[0013] Furthermore, the radiator 7 is a plate-fin radiator.

[0014] Furthermore, the internal components of the cabinet include the liquid metal cold plate 3, the piping assembly 4, the gear pump 5, and the liquid storage tank 9, and all internal components of the cabinet are filled with the liquid metal 10; that is, the liquid metal cold plate 3, the piping assembly 4, the gear pump 5, and the liquid storage tank 9 are all filled with the liquid metal 10.

[0015] Furthermore, the quick connector 6 is a pluggable and self-sealing connector.

[0016] Furthermore, the excitation converter heat dissipation circuit system also includes a fan 8, which is used to dissipate the heat of the excitation thyristor 2.

[0017] Furthermore, the fan 8 is attached to the bottom of the heat sink 7 by screws.

[0018] Furthermore, there are more than 10 excitation thyristors 2, and the more than 10 excitation thyristors 2 are arranged side by side inside the cabinet 1.

[0019] This utility model also provides an excitation converter cabinet, which includes the above-mentioned excitation converter cabinet heat dissipation circuit system.

[0020] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0021] (1) Compared with ordinary air-cooled excitation converter cabinet, the novel liquid metal circuit excitation converter cabinet provided by this utility model can increase the number of thyristors in a single cabinet by utilizing the efficient heat exchange capacity and miniaturization characteristics of liquid metal cold plate, greatly improving the cabinet integration, and providing greater possibilities for the introduction of higher specification thyristors.

[0022] (2) The use of liquid metal with high thermal conductivity increases the operating temperature of the external heat sink, which not only makes the size of the terminal heat sink smaller, but also significantly reduces the additional power consumption required for heat dissipation, and further reduces the carbon emissions of the system.

[0023] (3) The liquid metal heat dissipation circuit system uses pluggable self-sealing quick connectors between each cold plate and radiator inlet and outlet, which improves the maintainability of each component; and the liquid metal has the characteristics of low pressure and low saturated vapor pressure at high temperature, which reduces the risk of personnel maintenance.

[0024] (4) The excitation converter cabinet with the novel structure provided by this utility model is a closed cabinet, which effectively avoids the entry of dust in the air from affecting the operation of electronic components, and further improves the operating efficiency and reliability of the excitation thyristor. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0026] Figure 1 This is a schematic diagram of the heat dissipation circuit system of the excitation converter cabinet according to a specific embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Cabinet; 2. Magnetizing thyristor; 3. Liquid metal cold plate; 4. Piping assembly; 5. Gear pump; 6. Quick coupling; 7. Heat sink; 8. Fan; 9. Liquid storage tank; 10. Liquid metal. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and do not constitute a limitation thereof.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] like Figure 1The diagram shows a schematic of the excitation converter heat dissipation circuit system according to an embodiment of the present invention. As can be seen from the diagram, the excitation converter heat dissipation circuit system includes the excitation converter heat dissipation circuit system provided by the present invention. The excitation converter heat dissipation circuit system includes circuit system components and internal cabinet components. Specifically, the excitation converter heat dissipation circuit system includes a cabinet 1, an excitation thyristor 2, a liquid metal cooling plate 3, piping components 4, a gear pump 5, quick connectors 6, a radiator 7, a storage tank 9, and liquid metal 10. The liquid metal cooling plate 3 is attached to the outer surface of the excitation thyristor 2 to absorb the heat from the excitation thyristor 2. The excitation thyristor 2 is the main heat-generating unit inside the cabinet 1. The circuit system components include the excitation thyristor 2, a liquid metal cooling plate 3, a pipe assembly 4, a gear pump 5, a quick connector 6, a radiator 7, a storage tank 9, and liquid metal 10. The circuit system comprises a thyristor 2, a liquid metal cooling plate 3, a gear pump 5, a radiator 7, and a storage tank 9. All components in the circuit system are connected using the piping assembly 4, i.e., the excitation thyristor 2, the liquid metal cooling plate 3, the gear pump 5, the radiator 7, and the storage tank 9 are all connected using the piping assembly 4. The excitation thyristor 2, the liquid metal cooling plate 3, part of the piping assembly 4, the gear pump 5, and the storage tank 9 are all located inside the cabinet 1. The radiator 7 is located on the upper exterior of the cabinet 1. The quick connector 6 is located on the inlet and outlet sides of the radiator 7 and the liquid metal cooling plate 3. The storage tank 9 stores the liquid metal 10. The gear pump 5 drives the liquid metal 10. In a specific embodiment, the liquid metal 10 is a low-melting-point sodium-potassium alloy, a gallium-indium alloy, or a gallium-indium-tin alloy; the melting point range of the low-melting-point sodium-potassium alloy is 0℃~40℃.

[0035] In a specific embodiment, the radiator 7 is a plate-fin radiator, specifically a terminal plate-fin radiator; the gear pump 5 drives the liquid metal 10, so that the liquid metal cold plate 3, the pipeline assembly 4, the gear pump 5, and the storage tank 9 are all filled with the liquid metal 10; specifically, when the system is running, the liquid metal 10 is driven by the gear pump 5 to fill the entire internal components of the cabinet; when the system is not running, the liquid metal 10 is stored in the storage tank 9 due to gravity, and the circuit components outside the cabinet 1 do not contain liquid metal; the system provided in this specific embodiment utilizes the high heat transfer coefficient and thermal conductivity of liquid metal to transfer the heat from the high-power excitation thyristor to the plate-fin radiator for heat dissipation to the environment in a timely manner; the plate-fin radiator is placed on the outside of the cabinet, which can effectively prevent dust from entering the cabinet when the fan is running, thus significantly reducing the maintenance rate of the cabinet.

[0036] In a specific embodiment, the liquid metal cooling plate 3, the gear pump 5, the quick connector 6, the radiator 7, and the liquid storage tank 9 are all made of solid metal materials that do not react with the liquid metal. The piping assembly 4 is made of a flexible hose material that does not react with the liquid metal 10, such as PTFE (polytetrafluoroethylene) or EPDM (ethylene propylene diene monomer) hoses, which facilitates flexible arrangement of the heat dissipation circuit. The quick connector 6 is a pluggable and self-sealing connector that ensures no liquid leakage during a single plugging and unplugging. The terminal plate-fin radiator 7 can be modified in size and number of fins according to the power consumption level and heat dissipation method of the excitation thyristor 2 in the cabinet, such as forced convection or natural convection.

[0037] In a specific embodiment, the cabinet 1 is a carrier for excitation thyristors 2 and part of the liquid metal circuit, which can accommodate more than 10 excitation thyristors 2 and liquid metal cold plates 3 arranged side by side; that is, in a preferred embodiment, there are more than 10 excitation thyristors 2, and more than 10 excitation thyristors 2 are arranged side by side inside the cabinet 1.

[0038] In a specific implementation, when the heat dissipation power consumption is low, it can be dissipated by natural convection through the terminal plate-fin heat sink 7; while when the heat dissipation power consumption is high, the excitation converter cabinet heat dissipation circuit system also includes a fan 8, which provides heat dissipation airflow to dissipate the heat of the excitation thyristor 2. The fan 8 is attached to the bottom of the heat sink 7 by screws.

[0039] In a specific embodiment, the present invention also provides an excitation converter cabinet, which includes the above-mentioned excitation converter cabinet heat dissipation circuit system.

[0040] This utility model provides a heat dissipation circuit system for an excitation converter cabinet. Utilizing the high thermal conductivity of liquid metal, it improves the heat exchange efficiency of the excitation thyristor heat dissipation circuit, significantly reducing the additional power consumption required for heat dissipation, such as that from fans and pumps. This increases the number of thyristors in a single cabinet while effectively reducing the cabinet size. Furthermore, the liquid metal circuit in the cabinet uses quick-connect couplings, greatly improving the system's maintainability. The cabinet can be designed as a fully enclosed unit to prevent dust from entering and affecting the operation of electronic components.

[0041] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this utility model can be achieved, and this is not limited herein.

[0042] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A heat dissipation circuit system for an excitation converter cabinet, characterized in that: The excitation converter cabinet heat dissipation circuit system includes a cabinet (1), an excitation thyristor (2), a liquid metal cold plate (3), a pipeline assembly (4), a gear pump (5), a quick connector (6), a radiator (7), a liquid storage tank (9), and liquid metal (10). The liquid metal cold plate (3) is attached to the outer surface of the excitation thyristor (2) to absorb the heat of the excitation thyristor (2); The circuit system components include the excitation thyristor (2), the liquid metal cooling plate (3), the gear pump (5), the radiator (7), and the liquid storage tank (9); all the circuit system components are connected by the pipeline assembly (4); The excitation thyristor (2), the liquid metal cooling plate (3), part of the pipeline assembly (4), the gear pump (5) and the liquid storage tank (9) are all located inside the cabinet (1); The heat sink (7) is located on the outside of the cabinet (1); The quick connector (6) is located on the inlet and outlet sides of the radiator (7) and the inlet and outlet sides of the liquid metal cold plate (3); the liquid storage tank (9) stores the liquid metal (10); the gear pump (5) is used to drive the liquid metal (10).

2. The excitation converter heat dissipation circuit system according to claim 1, characterized in that: The radiator (7) is a plate-fin radiator.

3. The excitation converter cabinet heat dissipation circuit system according to claim 1, characterized in that: The internal components of the cabinet include the liquid metal cold plate (3), the pipeline assembly (4), the gear pump (5) and the liquid storage tank (9), and the liquid metal (10) is filled in all the internal components of the cabinet.

4. The excitation converter heat dissipation circuit system according to claim 1, characterized in that: The quick connector (6) is a pluggable and self-sealing connector.

5. The excitation converter cabinet heat dissipation circuit system according to claim 1, characterized in that: The excitation converter cabinet heat dissipation circuit system also includes a fan (8) for dissipating the heat of the excitation thyristor (2).

6. The excitation converter heat dissipation circuit system according to claim 5, characterized in that: The fan (8) is attached to the bottom of the heat sink (7) by screws.

7. The excitation converter heat dissipation circuit system according to claim 1, characterized in that: There are more than 10 excitation thyristors (2), and the more than 10 excitation thyristors (2) are arranged side by side inside the cabinet (1).

8. An excitation converter cabinet, characterized in that, The excitation converter cabinet includes the excitation converter cabinet heat dissipation circuit system as described in any one of claims 1 to 7.

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