Direct current insulation switch cabinet

Abstract

The utility model relates to the technical field of electrical control equipment, and discloses a direct current insulation switch cabinet which comprises a cabinet body, a rotating shaft is fixedly connected to the outer wall of the cabinet body, a protective door is rotatably connected to the outer wall of the rotating shaft, a handle is fixedly connected to the outer wall of the protective door, and a heat dissipation assembly is arranged on the upper surface of the cabinet body. A detachable assembly is arranged on the lower surface of the cabinet body, the heat dissipation assembly comprises a cooling box, the lower surface of the cooling box is fixedly connected to the upper surface of the cabinet body, a refrigeration sheet is fixedly connected to the outer wall of the cooling box, a heat exchange pipe is fixedly connected to the inner wall of the cooling box, and an air inlet pipe is fixedly connected to one end of the heat exchange pipe. According to the utility model, the problem of internal heat accumulation during operation of the switch cabinet is solved, if a common switch cabinet is poor in heat dissipation, element performance reduction and frequent faults are easily caused by high temperature, and the purposes of effectively adjusting the temperature of the cabinet body, avoiding faults caused by overheating, prolonging the service life of equipment and ensuring stable operation of the direct-current insulation switch cabinet are achieved; and normal work of a power system is ensured.

Description

Technical Field

[0001] This utility model relates to the field of electrical control equipment technology, and in particular to DC insulated switchgear. Background Technology

[0002] In modern power systems, DC insulated switchgear plays a crucial role, responsible for the precise distribution, effective control, and reliable protection of DC power. From new energy power plants to urban rail transit power supply systems, and various industrial automation scenarios, the stable operation of DC insulated switchgear is indispensable. With the rapid development of power technology and the ever-increasing demands of various industries for the stability and reliability of power supply, DC insulated switchgear faces more stringent challenges in terms of heat dissipation performance and ease of maintenance.

[0003] In terms of current technology, in terms of mechanical structure, DC insulated switchgear cabinets typically use a conventional metal frame with sealed plates to ensure that internal electrical components are not affected by the external environment. In terms of heat dissipation technology, simple ventilation port designs are often used, hoping to remove some heat through natural air circulation. At the same time, heat sinks of a certain area are attached to the surface of the cabinet or key heat-generating parts inside to dissipate heat using the principle of heat conduction. However, this heat dissipation method is relatively passive and lacks a flexible response mechanism to temperature changes.

[0004] However, these heat dissipation methods have drawbacks. When the DC insulated switchgear is in a high-load operation state for a long time, a lot of heat will be generated inside. The existing heat dissipation methods are difficult to meet the requirements for rapid heat dissipation, causing heat to accumulate continuously inside the cabinet. Excessive temperature will affect the performance of electrical components inside the switchgear, accelerate component aging, lead to performance degradation, and significantly increase the frequency of failures, which greatly threatens the stable operation of the DC insulated switchgear and thus affects the normal operation of the power system. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a DC insulated switchgear, which aims to improve the problem of internal heat accumulation during switchgear operation. Generally, if the heat dissipation of a switchgear is poor, it is easy for high temperature to cause the performance of components to degrade and frequent failures.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a DC insulated switch cabinet, including a cabinet body, a rotating shaft fixedly connected to the outer wall of the cabinet body, a protective door rotatably connected to the outer wall of the rotating shaft, a handle fixedly connected to the outer wall of the protective door, a heat dissipation component provided on the upper surface of the cabinet body, and a disassembly component provided on the lower surface of the cabinet body;

[0007] The heat dissipation assembly includes a cooling box, the lower surface of which is fixedly connected to the upper surface of the cabinet. Cooling fins are fixedly connected to the outer wall of the cooling box. A heat exchange tube is fixedly connected to the inner wall of the cooling box. An air inlet pipe is fixedly connected to one end of the heat exchange tube, and a first delivery pipe is fixedly connected to the other end. An air outlet hood is fixedly connected to one end of the first delivery pipe. An air pump is fixedly connected to the inner wall of the cabinet. An exhaust pipe is fixedly connected to the output end of the air pump. An exhaust hood is fixedly connected to one end of the exhaust pipe, and an air inlet pipe is fixedly connected to the input end of the air pump. A heat absorption plate is fixedly connected to the inner wall of the cabinet. A second delivery pipe is fixedly connected to the outer wall of the heat absorption plate. A heat dissipation fin is fixedly connected to one end of the second delivery pipe. Heat dissipation holes are provided on the outer wall of the cabinet.

[0008] Furthermore, the disassembly assembly includes a locking block, the upper surface of which is fixedly connected to the lower surface of the cabinet, an insulating base plate slidably connected to the lower surface of the locking block, a rubber leg slidably connected to the lower surface of the insulating base plate, a fixing cover fixedly connected to the outer wall of the insulating base plate, a sliding shaft slidably connected to the inner wall of the fixing cover, a pull rod fixedly connected to one end of the sliding shaft, a spring fixedly connected to the inner wall of the fixing cover, and a fixing block fixedly connected to the other end of the sliding shaft.

[0009] Furthermore, the outer wall of the fixing block is slidably connected to the inner wall of the card block, and the fixing block is used to fix the card block.

[0010] Furthermore, the outer wall of the sliding shaft is slidably connected to the inner wall of the insulating base plate, and the sliding shaft is used to drive the fixed block to move.

[0011] Furthermore, one end of the spring is fixedly connected to the outer wall of the fixing block, and the fixing block is used to compress the spring.

[0012] Furthermore, one end of the heat exchange tube is fixedly connected to the other end of the air inlet pipe, and the air inlet pipe is used to transport high-temperature gas into the heat exchange tube.

[0013] Furthermore, the outer wall of the second conveying pipe is fixedly connected to the inner wall of the cabinet, and the second conveying pipe is used to convey high-temperature gas to the inside of the heat sink.

[0014] Furthermore, the inner wall of the heat sink is fixedly connected to the inner wall of the cabinet, and the heat sink is used to transport high-temperature gas to the outside.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the cabinet heat dissipation is divided into two situations. During normal heat dissipation, the heat absorption plate absorbs the heat from the cabinet, which is then transferred to the heat sink via the second conveying pipe and discharged to the outside to complete the first cooling. When the temperature is high, the air pump is started. Its output end collects the hot air into the extraction pipe through the extraction hood, and then sends it into the intake pipe from the input end. The hot air enters the heat exchange tube, and the cooling fins convert it into cold air, which returns to the cabinet through the first conveying pipe and the exhaust hood to achieve a second cooling. This solves the problem of heat accumulation inside the switchgear during operation. Generally, if the switchgear heat dissipation is poor, the performance of components is easily degraded and frequent failures occur due to high temperature. This invention effectively regulates the cabinet temperature, avoids failures caused by overheating, extends the service life of the equipment, ensures the stable operation of the DC insulated switchgear, and ensures the normal operation of the power system.

[0017] 2. In this utility model, by pulling the pull rod, the sliding shaft and the fixing block are moved. The fixing block compresses the spring and contracts, causing the fixing block to disengage from the locking block, thus completing the disassembly. During installation, the insulating base plate is first aligned with the locking block and inserted. The pull rod is then released, and the spring rebounds, causing the sliding shaft and the fixing block to move, thus connecting the fixing block with the locking block and completing the installation. This achieves the goal of eliminating the need for complicated procedures and tools, facilitating quick replacement of the insulating base plate during inspection and maintenance, improving work efficiency, ensuring the insulation performance of the switchgear, and ensuring the safety of personnel operation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the DC insulated switchgear proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the cabinet structure of the DC insulated switchgear proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the heat exchange tube section of the DC insulated switchgear proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the insulating base plate of the DC insulated switchgear proposed in this utility model;

[0022] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 6 This is a schematic diagram of the spring section of the DC insulated switchgear proposed in this utility model.

[0024] Legend:

[0025] 1. Cabinet; 2. Handle; 3. Shaft; 4. Protective door; 5. Heat dissipation hole; 6. Cooling box; 7. First conveying pipe; 8. Heat sink; 9. Cooling element; 10. Inlet pipe; 11. Air pump; 12. Extraction pipe; 13. Extraction hood; 14. Exit hood; 15. Heat absorber plate; 16. Second conveying pipe; 17. Heat exchanger tube; 18. Insulating base plate; 19. Rubber leg; 20. Locking block; 21. Fixing block; 22. Spring; 23. Sliding shaft; 24. Fixing cover; 25. Pull rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1 , Figure 2 ,and Figure 3 An embodiment of this utility model is provided: a DC insulated switch cabinet, including a cabinet body 1, a rotating shaft 3 fixedly connected to the outer wall of the cabinet body 1, a protective door 4 rotatably connected to the outer wall of the rotating shaft 3, a handle 2 fixedly connected to the outer wall of the protective door 4, a heat dissipation component provided on the upper surface of the cabinet body 1, and a disassembly component provided on the lower surface of the cabinet body 1.

[0028] The heat dissipation assembly includes a cooling box 6, the lower surface of which is fixedly connected to the upper surface of the cabinet 1. Cooling fins 9 are fixedly connected to the outer wall of the cooling box 6. A heat exchange tube 17 is fixedly connected to the inner wall of the cooling box 6. An air inlet pipe 10 is fixedly connected to one end of the heat exchange tube 17, and a conveying pipe 7 is fixedly connected to the other end of the heat exchange tube 17. An air outlet hood 14 is fixedly connected to one end of the conveying pipe 7. An air pump 11 is fixedly connected to the inner wall of the cabinet 1. An exhaust pipe 12 is fixedly connected to the output end of the air pump 11. An exhaust hood 13 is fixedly connected to one end of the exhaust pipe 12. An air inlet pipe 10 is fixedly connected to the input end of the air pump 11. A heat absorption plate 15 is fixedly connected to the inner wall of the cabinet 1. A second conveying pipe 16 is fixedly connected to the outer wall of the heat absorption plate 15. A heat sink 8 is fixedly connected to one end of the second conveying pipe 16. Heat dissipation holes 5 are provided on the outer wall of the cabinet 1.

[0029] Specifically, the heat is absorbed by the heat-absorbing plate 15, transmitted to the heat sink 8 via the second conveying pipe 16, and then discharged to the outside to complete the first cooling. When the temperature is high, the air pump 11 is started. Its output end collects the hot air into the extraction pipe 12 via the extraction hood 13, and then sends it into the intake pipe 10 from the input end. The hot air enters the heat exchange pipe 17, and the cooling plate 9 converts it into cold air, which returns to the inside of the cabinet 1 via the first conveying pipe 7 and the exhaust hood 14 to achieve the second cooling.

[0030] Reference Figure 1 , Figure 4 , Figure 5 and Figure 6 The disassembly assembly includes a locking block 20. The upper surface of the locking block 20 is fixedly connected to the lower surface of the cabinet 1. An insulating base plate 18 is slidably connected to the lower surface of the locking block 20. A rubber leg 19 is slidably connected to the lower surface of the insulating base plate 18. A fixing cover 24 is fixedly connected to the outer wall of the insulating base plate 18. A sliding shaft 23 is slidably connected to the inner wall of the fixing cover 24. A pull rod 25 is fixedly connected to one end of the sliding shaft 23. A spring 22 is fixedly connected to the inner wall of the fixing cover 24. A fixing block 21 is fixedly connected to the other end of the sliding shaft 23. The outer wall of the fixing block 21 is slidably connected to the inner wall of the locking block 20. The fixing block 21 is used to fix the locking block 20. The outer wall of the sliding shaft 23 is slidably connected to the inner wall of the insulating base plate 18. The sliding shaft 23 is used to drive the fixed block 21 to move. One end of the spring 22 is fixedly connected to the outer wall of the fixed block 21. The fixed block 21 is used to compress the spring 22. One end of the heat exchange tube 17 is fixedly connected to the other end of the air inlet pipe 10. The air inlet pipe 10 is used to transport high-temperature gas into the heat exchange tube 17. The outer wall of the second conveying pipe 16 is fixedly connected to the inner wall of the cabinet 1. The second conveying pipe 16 is used to transport high-temperature gas into the heat sink 8. The inner wall of the heat sink 8 is fixedly connected to the inner wall of the cabinet 1. The heat sink 8 is used to transport high-temperature gas to the outside.

[0031] Specifically, disassemble the insulating base plate 18, pull the pull rod 25, which drives the sliding shaft 23 and the fixing block 21 to move. The fixing block 21 compresses the spring 22 to retract, causing the fixing block 21 to disengage from the locking block 20, thus completing the disassembly. During installation, first align the insulating base plate 18 with the locking block 20 and insert it. Release the pull rod 25, and the spring 22 will rebound, driving the sliding shaft 23 and the fixing block 21 to move, so that the fixing block 21 connects with the locking block 20, thus achieving the installation.

[0032] Working principle: When the DC insulated switchgear is needed, firstly, pulling handle 2 rotates the protective door 4. The protective door 4 is opened by rotating shaft 3. When heat dissipation is needed inside the cabinet 1, the heat absorption plate 15 absorbs the hot air. The heat absorption plate 15 then transports the hot air to the heat sink 8 through the delivery pipe 16. Finally, the heat sink 8 transports the hot air to the outside to achieve the first cooling. When the temperature inside the cabinet 1 is high, the air pump 11 is started. Its output end collects the hot air through the extraction hood 13 into the extraction pipe 12. Then, the hot air is transported to the inlet pipe 10 through the input end of the air pump 11. The inlet pipe 10 transports the hot air to the heat exchange tube 17. At this time, the cooling element 9 starts working, which in turn cools the heat exchange tube 17. The hot air inside 7 is converted into cold air and transported to the inside of the conveying pipe 7. Finally, it is transported to the inside of the cabinet 1 through the air outlet hood 14 to achieve secondary cooling. In addition, when it is necessary to remove the insulating base plate 18, the first step is to pull the pull rod 25 to move the sliding shaft 23. The sliding shaft 23 moves the fixing block 21. The fixing block 21 compresses the spring 22 to make it contract, so that the fixing block 21 is disengaged from the locking block 20, thus removing the insulating base plate 18. When it is necessary to install the insulating base plate 18, the insulating base plate 18 is first aligned with the locking block 20 and then inserted. Then, by releasing the pull rod 25, the spring 22 rebounds and moves the sliding shaft 23. The sliding shaft 23 moves the fixing block 21, so that the fixing block 21 is connected to the locking block 20, thus installing the insulating base plate 18.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. DC insulated switchgear comprising a cabinet (1), characterised in that: The outer wall of the cabinet (1) is fixedly connected with a rotating shaft (3), the outer wall of the rotating shaft (3) is rotatably connected with a protective door (4), the outer wall of the protective door (4) is fixedly connected with a handle (2), the upper surface of the cabinet (1) is provided with a heat dissipation assembly, and the lower surface of the cabinet (1) is provided with a dismounting assembly. The heat dissipation assembly comprises a cooling box (6), the lower surface of the cooling box (6) is fixedly connected to the upper surface of the cabinet (1), the outer wall of the cooling box (6) is fixedly connected with a refrigeration fin (9), the inner wall of the cooling box (6) is fixedly connected with a heat exchange pipe (17), one end of the heat exchange pipe (17) is fixedly connected with an air inlet pipe (10), the other end of the heat exchange pipe (17) is fixedly connected with a conveying pipe I (7), one end of the conveying pipe I (7) is fixedly connected with an air outlet cover (14), the inner wall of the cabinet (1) is fixedly connected with an air pump (11), the output end of the air pump (11) is fixedly connected with a suction pipe (12), one end of the suction pipe (12) is fixedly connected with a suction cover (13), the input end of the air pump (11) is fixedly connected with the air inlet pipe (10), the inner wall of the cabinet (1) is fixedly connected with a heat absorbing plate (15), the outer wall of the heat absorbing plate (15) is fixedly connected with a conveying pipe II (16), one end of the conveying pipe II (16) is fixedly connected with a heat dissipation fin (8), and the outer wall of the cabinet (1) is provided with a heat dissipation hole (5).

2. The DC insulated switchgear according to claim 1, characterized in that: The dismounting assembly comprises a clamping block (20), the upper surface of the clamping block (20) is fixedly connected to the lower surface of the cabinet (1), the lower surface of the clamping block (20) is slidably connected with an insulating bottom plate (18), the lower surface of the insulating bottom plate (18) is slidably connected with a rubber leg (19), the outer wall of the insulating bottom plate (18) is fixedly connected with a fixing cover (24), the inner wall of the fixing cover (24) is slidably connected with a sliding shaft (23), one end of the sliding shaft (23) is fixedly connected with a pull rod (25), the inner wall of the fixing cover (24) is fixedly connected with a spring (22), and the other end of the sliding shaft (23) is fixedly connected with a fixing block (21).

3. The DC insulated switchgear according to claim 2, characterized in that: The outer wall of the fixing block (21) is slidably connected to the inner wall of the clamping block (20), and the fixing block (21) is used for fixing the clamping block (20).

4. The DC insulated switchgear according to claim 2, characterized in that: The outer wall of the sliding shaft (23) is slidably connected to the inner wall of the insulating bottom plate (18), and the sliding shaft (23) is used for driving the fixing block (21) to move.

5. The DC insulated switchgear according to claim 2, characterized in that: One end of the spring (22) is fixedly connected to the outer wall of the fixing block (21), and the fixing block (21) is used for pressing the spring (22).

6. The DC insulated switchgear cabinet according to claim 1, characterized in that: One end of the heat exchange pipe (17) is fixedly connected to the other end of the air inlet pipe (10), and the air inlet pipe (10) is used for conveying high-temperature gas into the heat exchange pipe (17).

7. The DC insulated switchgear cabinet according to claim 1, characterized in that: The outer wall of the conveying pipe II (16) is fixedly connected to the inner wall of the cabinet (1), and the conveying pipe II (16) is used for conveying high-temperature gas into the heat dissipation fin (8).

8. The DC insulated switchgear cabinet according to claim 1, characterized in that: The inner wall of the heat dissipation fin (8) is fixedly connected to the inner wall of the cabinet (1), and the heat dissipation fin (8) is used for conveying high-temperature gas to the outside.

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