Cooling device for high-voltage electrical equipment

Abstract

The utility model relates to the technical field of high-voltage electrical equipment, and discloses a high-voltage electrical equipment cooling device which comprises an outer shell, an inner tank body, an upper cover and an air blowing assembly. Supporting legs are fixedly connected to the bottom of the outer shell, a mounting seat is fixedly connected to the supporting legs, the inner tank body is arranged in the outer shell, a heat conduction block is fixedly connected into the side wall of the inner tank body, one end of the heat conduction block extends to the inner wall of the inner tank body, and the other end of the heat conduction block is fixedly connected with the inner wall of the outer shell. A thread mounting seat is arranged at the top of the outer shell, and an internal thread groove is formed in the bottom of the upper cover and is in threaded connection with the thread mounting seat; opening and closing of a circuit are controlled through the telescopic conducting rod, flowing of transformer oil is accelerated through the arrangement of the piston plate, so that the arc extinguishing time is shortened, meanwhile, the heat dissipation rate of the transformer oil is accelerated through mutual cooperation of the heat conduction block and the air blowing assembly, and the safety of equipment is improved.

Description

Technical Field

[0001] This utility model relates to a wide range of applications, specifically a cooling device for high-voltage electrical equipment. Background Technology

[0002] In electrical equipment with contacts, the process of connecting and disconnecting current is often accompanied by the generation and extinguishing of an electric arc. An electric arc is a form of gas discharge. When a control device on a circuit breaks or closes a circuit with a voltage exceeding 10V and a current exceeding 0.5A in the atmosphere, a ball of extremely hot, bright, and conductive gas is generated in the contact gap; this is called an electric arc. Since the electric arc is mainly generated when the contacts disconnect the circuit, the high temperature will burn the contacts and insulation. In severe cases, it can even cause phase-to-phase short circuits, electrical explosions, and thus fires, endangering the safety of personnel and equipment.

[0003] Therefore, an arc-extinguishing device is installed at the contact position. Existing arc-extinguishing devices are mainly divided into arc-extinguishing hoods, oil-cooled arc-extinguishing devices, and air-blowing arc-extinguishing devices. Among them, oil-cooled arc extinguishing places the arc in transformer oil. The arc vaporizes and decomposes the oil to form oil gas, the main component of which is hydrogen. In the form of bubbles in the oil, the arc is surrounded. Since hydrogen has a high thermal conductivity, the heat of the arc is easily dissipated. However, since the existing oil-cooled arc-extinguishing device keeps the contacts submerged in transformer oil, when the contacts accidentally break and the transformer oil is low, the arc will cause the transformer oil to continuously produce hydrogen, thus posing a safety hazard. In addition, since the transformer oil in the oil-cooled arc-extinguishing device is stationary when the contacts break, and lengthening the arc can accelerate its extinction, the arc-extinguishing time of the stationary hydraulic oil is long, and more hydrogen is produced during the arc-extinguishing process, which can easily lead to danger. Utility Model Content

[0004] The purpose of this invention is to provide a cooling device for high-voltage electrical equipment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-voltage electrical equipment cooling device includes an outer shell, an inner tank, a top cover, and a blower assembly;

[0007] The bottom of the outer shell is fixedly connected to a support leg, and a mounting base is fixedly connected to the support leg. The inner tank is set inside the outer shell. A heat-conducting block is fixedly connected to the side wall of the inner tank. One end of the heat-conducting block extends to the inner wall of the inner tank, and the other end of the heat-conducting block is fixedly connected to the inner wall of the outer shell. A threaded mounting base is provided at the top of the outer shell, and an internal thread groove is provided at the bottom of the top cover. The internal thread groove is threadedly connected to the threaded mounting base.

[0008] An insulating sealing sleeve is installed at each of the upper and lower ends of the inner tank. A fixed conductive rod is fixedly connected inside one insulating sealing sleeve, and a telescopic conductive rod is slidably connected inside the other insulating sealing sleeve. A telescopic motor is installed on the outer wall of the inner tank. The telescopic conductive rod is fixedly connected to the output shaft of the telescopic motor. Mounting bolts are fixedly connected to the fixed conductive rod and the telescopic conductive rod. A terminal is installed on the mounting bolt. A piston plate is fixedly connected to the end of the telescopic conductive rod near the fixed conductive rod.

[0009] The blower assembly is installed inside the upper cover to accelerate the gas flow rate between the outer shell and the inner tank.

[0010] As a further embodiment of this utility model, a wiring port is provided inside the upper cover.

[0011] As a further embodiment of this utility model, an exhaust valve is installed on the top of the inner tank.

[0012] As a further embodiment of this utility model: the top of the inner tank is provided with an oil inlet, the bottom of the inner tank is provided with an oil outlet, and the oil inlet and the oil outlet are internally threaded with a sealing cap.

[0013] As a further embodiment of this utility model: the blower assembly includes a fixed frame fixedly connected inside the upper cover, a motor fixedly connected to the fixed frame, and fan blades fixedly connected to the output shaft of the motor.

[0014] As a further improvement of this utility model, a filter screen is fixedly connected between the fixing frame and the top cover.

[0015] Compared with the prior art, the beneficial effects of this utility model are: this utility model controls the opening and closing of the circuit through a retractable conductive rod, and accelerates the flow of transformer oil through the setting of the piston plate, thereby reducing the arc extinguishing time. At the same time, the heat dissipation rate of transformer oil is accelerated by the cooperation of the heat-conducting block and the blower assembly, thus improving the safety of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a high-voltage electrical equipment cooling device according to the present invention.

[0017] Figure 2 This is a cross-sectional view of a high-voltage electrical equipment cooling device according to the present invention.

[0018] Figure 3 This is a cross-sectional view of a high-voltage electrical equipment cooling device according to the present invention.

[0019] In the diagram: 1-Outer shell, 2-Inner tank, 3-Heat-conducting block, 4-Insulating sealing sleeve, 5-Telescopic conductive rod, 6-Telescopic mechanism, 7-Fixed conductive rod, 8-Mounting bolt, 9-Wire connector, 10-Exhaust valve, 11-Oil drain port, 12-Oil inlet port, 13-Sealing cover, 14-Threaded mounting base, 15-Top cover, 16-Internal thread groove, 17-Wire connector, 18-Fixing frame, 19-Motor, 20-Fan blade, 21-Filter screen, 22-Support leg, 23-Mounting base, 24-Piston plate. Detailed Implementation

[0020] 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.

[0021] See Figures 1-3 In this embodiment of the present invention, a high-voltage electrical equipment cooling device includes an outer shell 1, an inner tank 2, a top cover 15, and a blower assembly; a support leg 22 is fixedly connected to the bottom of the outer shell 1, and a mounting base 23 is fixedly connected to the support leg 22; the inner tank 2 is disposed inside the outer shell 1, and a heat-conducting block 3 is fixedly connected to the side wall of the inner tank 2, one end of the heat-conducting block 3 extends to the inner wall of the inner tank 2, and the other end of the heat-conducting block 3 is fixedly connected to the inner wall of the outer shell 1; a threaded mounting base 14 is provided at the top of the outer shell 1, and an internal thread groove 16 is provided at the bottom of the top cover 15, the internal thread groove 16 being threadedly connected to the threaded mounting base 14; the inner tank 15... 2. An insulating sealing sleeve 4 is installed at each of the upper and lower ends. A fixed conductive rod 7 is fixedly connected inside one insulating sealing sleeve 4, and a telescopic conductive rod 5 is slidably connected inside the other insulating sealing sleeve 4. A telescopic motor is installed on the outer wall of the inner tank 2. The telescopic conductive rod 5 is fixedly connected to the output shaft of the telescopic motor. Mounting bolts 8 are fixedly connected to the fixed conductive rod 7 and the telescopic conductive rod 5. A terminal 9 is installed on the mounting bolt 8. A piston plate 24 is fixedly connected to the end of the telescopic conductive rod 5 near the fixed conductive rod 7. The blower assembly is installed inside the upper cover 15 to accelerate the gas flow rate between the outer shell 1 and the inner tank 2.

[0022] This invention first installs and fixes the equipment using the support leg 22 and the mounting base 23. The two sets of wire terminals are connected via the connector 9, and the connector 9 is then installed and connected to the fixed conductive rod 7 and the telescopic conductive rod 5 using mounting bolts 8. The upper cover 15 is then installed and fixed to the outer shell 1 via the threaded connection between the internal thread groove 16 and the threaded mounting base 14. When the equipment is closed, the telescopic conductive rod 5 is inserted into the inner tank 2 by controlling the telescopic motor. At this time, the telescopic conductive rod 5 and the fixed conductive rod 7 are in contact, and the circuit is closed. When it is necessary to disconnect the circuit, the telescopic motor is used again to... The motor controls the telescopic conductive rod 5 to be pulled out of the inner tank 2. At this time, the fixed conductive rod 7 and the telescopic conductive rod 5 are separated. During this process, the telescopic conductive rod 5 drives the piston plate 24 to move. During the movement of the piston plate 24, the transformer oil in the inner tank 2 flows rapidly, thereby reducing the arc extinguishing time. At this time, the electric arc heats and decomposes the transformer oil. The heat in the transformer oil is absorbed by the heat-conducting block 3, and air is blown into the space between the outer shell 1 and the inner tank 2 by the blower assembly, thereby accelerating the flow rate of the gas outside the heat-conducting block 3 and thus accelerating the heat dissipation rate of the heat-conducting block 3.

[0023] In one instance of this embodiment, please refer to Figures 1-3 The upper cover 15 is provided with a wiring port 17, which is used to install and connect wires.

[0024] In one instance of this embodiment, please refer to Figures 1-3 The inner tank 2 is equipped with an exhaust valve 10. This utility model uses the exhaust valve 10 to discharge the oil and gas decomposed by electric arc in the inner tank 2.

[0025] In one instance of this embodiment, please refer to Figures 1-3 The inner tank 2 is provided with an oil inlet 12 at the top and an oil outlet 11 at the bottom. The oil inlet 12 and the oil outlet 11 are internally threaded with a sealing cap 13. This utility model realizes the injection and discharge of transformer oil in the inner tank 2 by setting the oil inlet 12 and the oil outlet 11, and seals the oil inlet 12 and the oil outlet 11 by setting the sealing cap 13.

[0026] In one instance of this embodiment, please refer to Figures 1-3 The blower assembly includes a fixed frame 18 fixedly connected inside the upper cover 15, a motor 19 fixedly connected to the fixed frame 18, a fan blade 20 fixedly connected to the output shaft of the motor 19, and a filter screen 21 fixedly connected between the fixed frame 18 and the upper cover 15.

[0027] The blower assembly drives the fan blades 20 to rotate via the motor 19, thereby blowing gas between the outer shell 1 and the inner tank 2 through the rotation of the fan blades 20, thus accelerating the gas flow rate between the outer shell 1 and the inner tank 2. The filter screen 21 filters the gas entering the outer shell 1, thereby preventing impurities from entering between the outer shell 1 and the inner tank 2 and affecting the heat dissipation rate.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. A cooling device for high-voltage electrical equipment, characterized in that, Includes the outer shell, inner tank, top cover, and blower assembly; The bottom of the outer shell is fixedly connected to a support leg, and a mounting base is fixedly connected to the support leg. The inner tank is set inside the outer shell. A heat-conducting block is fixedly connected to the side wall of the inner tank. One end of the heat-conducting block extends to the inner wall of the inner tank, and the other end of the heat-conducting block is fixedly connected to the inner wall of the outer shell. A threaded mounting base is provided at the top of the outer shell, and an internal thread groove is provided at the bottom of the top cover. The internal thread groove is threadedly connected to the threaded mounting base. An insulating sealing sleeve is installed at each of the upper and lower ends of the inner tank. A fixed conductive rod is fixedly connected inside one insulating sealing sleeve, and a telescopic conductive rod is slidably connected inside the other insulating sealing sleeve. A telescopic motor is installed on the outer wall of the inner tank. The telescopic conductive rod is fixedly connected to the output shaft of the telescopic motor. Mounting bolts are fixedly connected to the fixed conductive rod and the telescopic conductive rod. A terminal is installed on the mounting bolt. A piston plate is fixedly connected to the end of the telescopic conductive rod near the fixed conductive rod. The blower assembly is installed inside the upper cover to accelerate the gas flow rate between the outer shell and the inner tank.

2. The high-voltage electrical equipment cooling device according to claim 1, characterized in that, The upper cover is provided with a wiring port.

3. The high-voltage electrical equipment cooling device according to claim 1, characterized in that, An exhaust valve is installed on the top of the inner tank.

4. A high-voltage electrical equipment cooling device according to claim 1, characterized in that, The inner tank has an oil inlet at the top and an oil outlet at the bottom, with a sealing cap threadedly connecting the oil inlet and outlet.

5. A high-voltage electrical equipment cooling device according to claim 1, characterized in that, The blower assembly includes a fixed frame fixedly connected inside the upper cover, a motor fixedly connected to the fixed frame, and fan blades fixedly connected to the output shaft of the motor.

6. A high-voltage electrical equipment cooling device according to claim 5, characterized in that, A filter screen is fixedly connected between the mounting bracket and the top cover.

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