A gas insulated ring network switchgear

Abstract

The present invention provides a gas insulated ring network switchgear, comprising a ring network switchgear body, a gas chamber and a control switch chamber are provided in the ring network switchgear body, a piston is installed in the gas chamber, a heat dissipation structure is installed on the ring network switchgear body, the heat dissipation structure corresponds to the piston and the control switch chamber, an auxiliary box is fixed on the ring network switchgear body, a heat insulation board is installed on the peripheral side of the auxiliary box, a first through groove is provided in the auxiliary box and the gas chamber, a blocking block is installed in the gas chamber, the blocking block corresponds to the first through groove, a limit block is installed on one side of the blocking block, and a locking structure is installed on the limit block. The present invention can dissipate heat when the temperature is high, prevent the temperature of the device from being too high to cause danger, and prevent accidental contact with the gas chamber to cause burns; the insulating medium in the gas chamber can be supplemented by the auxiliary box after the insulating medium leaks, thereby preventing the insulating medium in the gas chamber from leaking and causing danger.

Description

Technical Field

[0001] The invention relates to the technical field of switchgear, in particular to a gas insulated ring network switchgear. Background Art

[0002] The switchgear with metal shell gas insulation mainly includes RM6, HXGT6, Safering and other models. The switch, busbar and supporting insulation of the equipment are arranged in a fully enclosed metal shell, which is filled with sulfur hexafluoride gas as arc extinguishing and insulating medium, and is connected to the external cable through a sealing sleeve. Therefore, the gas-insulated ring network switchgear is widely used in distribution stations and box-type substations in load centers such as urban residential areas, high-rise buildings, large public buildings, factories and enterprises due to its advantages of simple structure, small size, low cost and power supply safety. For example, the patent with publication number CN107769062A discloses a gas-insulated ring network switchgear, including a cable box, a gas box, an operating box, a switch assembly and a switch control assembly, the gas box is installed on the top of the rear side of the cable box, the operating box is installed on the top of the front side of the cable box, and the front side of the gas box and the rear side of the operating box are mutually abutted and matched, the switch assembly is installed in the gas box, the switch control assembly is installed in the operating box, and the switch assembly has a switch spindle that passes through the switch control assembly and is connected to the switch control assembly. The gas-insulated ring network switchgear provided by the device is designed, produced and assembled in a modular manner, and the production is very flexible and convenient, which improves the production efficiency of the product, facilitates the later inspection and maintenance of the product, and effectively reduces the production management cost of the product. However, the device cannot monitor the insulating medium in the gas box. When the insulating medium leaks, it will affect the safety of the switchgear. In addition, when the environmentally friendly gas-insulated ring network cabinet enclosed switchgear is in use, because it is a gas-enclosed device, the gas temperature will rise under high current and high voltage, which may cause burns to personnel when accidentally touched.

[0003] To this end, the present invention provides a gas insulated ring network switchgear. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a gas insulated ring network switchgear to solve the problems raised in the above-mentioned background technology. The present invention can dissipate heat when the temperature is high to prevent the temperature of the device from being too high and causing danger; it can prevent burns caused by accidentally touching the gas chamber; and after the insulating medium leaks, the insulating medium in the gas chamber can be replenished through an auxiliary box, thereby preventing the insulating medium in the gas chamber from leaking and causing danger.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a gas insulated ring network switch device, including a ring network switch device body, an air chamber and a control switch chamber are opened in the ring network switch device body, a piston is installed in the air chamber, a heat dissipation structure is installed on the ring network switch device body, the heat dissipation structure corresponds to the piston and the control switch chamber, an auxiliary box is fixed on the ring network switch device body, a heat insulation plate is installed on the surrounding side of the auxiliary box, a first through groove is opened in the auxiliary box and the air chamber, a blocking block is installed in the air chamber, the blocking block corresponds to the first through groove, a limit block is installed on one side of the blocking block, and a locking structure is installed on the limit block.

[0006] Furthermore, a slide rod is fixed on the blocking block, and a slide groove is provided in the air chamber, and the slide groove corresponds to the slide rod.

[0007] Furthermore, an insertion rod is fixed on the blocking block, the insertion rod is slidably connected to the cavity wall of the air chamber and the box wall of the auxiliary box, and one end of the insertion rod is fixedly connected to the limiting block.

[0008] Furthermore, the locking structure includes a card block, a card slot is opened in the box wall of the auxiliary box, the card slot corresponds to the card block, the card block is fixedly connected to the limit block, and the card block is made of elastic material.

[0009] Furthermore, a first electrode sheet is fixed on the limit block, a second electrode sheet is fixed on the box wall of the auxiliary box, the first electrode sheet corresponds to the second electrode sheet, an alarm is fixed on the ring network switch device body, and the alarm is connected to the first electrode sheet and the second electrode sheet through wires.

[0010] Furthermore, a film is fixed in the auxiliary box, a third electrode sheet is fixed on the film, a fourth electrode sheet is fixed in the box wall of the auxiliary box, and the third electrode sheet corresponds to the fourth electrode sheet.

[0011] Furthermore, a fan is fixed on the auxiliary box, and an air outlet of the fan is connected to the auxiliary box.

[0012] Furthermore, a plurality of support rods are fixed between the auxiliary box and the heat insulation board, a first cooling fan is fixed between the auxiliary box and the heat insulation board, and the support rods are L-shaped structures.

[0013] Furthermore, an air inlet and an air outlet are provided on one side of the control switch room, and the heat dissipation structure includes a second heat dissipation fan fixed in the air inlet.

[0014] Furthermore, a connecting rod is fixed on one side of the piston, and the connecting rod is an L-shaped structure. The connecting rod is slidably connected to the ring network switch device body, and a fifth electrode sheet is fixed on one end of the connecting rod. A limiting rod is fixed on the second cooling fan, and a sixth electrode sheet is fixed on the limiting rod. Multiple springs are fixed between the piston and the cavity wall of the air chamber.

[0015] Beneficial effects of the present invention: The present invention provides a gas-insulated ring network switch device, comprising an air chamber; a piston; a ring network switch device body; a heat dissipation structure; an auxiliary box; a heat insulation board; a first through groove; and a blocking block.

[0016] A piston is installed in the air chamber, and a heat dissipation structure is installed on the ring network switch device body. The heat dissipation structure can be started by controlling the piston, so that heat can be dissipated when the temperature is high, preventing the device from being overheated and causing danger. An auxiliary box is installed on the ring network switch device body, and a heat insulation plate is installed on the side of the auxiliary box to prevent accidental touching of the air chamber and causing burns. A first through groove is provided in the auxiliary box and the air chamber, and a blocking block is installed in the air chamber. After the insulating medium leaks, the insulating medium in the air chamber can be supplemented through the auxiliary box, thereby preventing the insulating medium in the air chamber from leaking and causing danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall assembly three-dimensional structure of a gas insulated ring network switchgear according to the present invention;

[0018] Figure 2 It is a schematic diagram of the assembly cross-sectional structure of a gas chamber and an auxiliary box in a gas-insulated ring network switchgear of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram at A in the middle;

[0020] Figure 4 It is a schematic diagram of the assembly cross-sectional structure of a gas chamber and a piston in a gas-insulated ring network switchgear of the present invention;

[0021] Figure 5 It is a schematic diagram of the assembly three-dimensional structure of a block in a gas-insulated ring network switchgear of the present invention;

[0022] Figure 6 It is a schematic diagram of the assembly cross-sectional structure of an auxiliary box in a gas-insulated ring network switchgear of the present invention;

[0023] Figure 7 for Figure 6 Schematic diagram at B in the middle;

[0024] In the figure: 1. Ring network switch equipment body; 2. Air chamber; 3. Control switch room; 4. Block; 5. Slide; 6. Slide rod; 7. Insert rod; 8. First through slot; 9. Second through slot; 10. Auxiliary box; 11. Film; 12. Limit block; 13. Slot; 14. Block; 15. First electrode sheet; 16. Second electrode sheet; 17. Third electrode sheet; 18. Fourth electrode sheet; 19. Heat insulation board; 20. Support rod; 21. First cooling fan; 22. Second cooling fan; 23. Air outlet; 24. Fan; 26. Spring; 27. Connecting rod; 28. Limit rod; 29. ​​Fifth electrode sheet; 30. Sixth electrode sheet; 31. Alarm. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] See also Figures 1 to 7 The present invention provides a technical solution: a gas insulated ring network switch device, comprising a ring network switch device body 1, an air chamber 2 and a control switch chamber 3 are opened in the ring network switch device body 1, a piston is installed in the air chamber 2, a heat dissipation structure is installed on the ring network switch device body 1, and the heat dissipation structure corresponds to the piston and the control switch chamber 3. An auxiliary box 10 is fixed on the ring network switch device body 1, and a heat insulation board 19 is installed on the peripheral side of the auxiliary box 10. A first through groove 8 is opened in the auxiliary box 10 and the air chamber 2, a blocking block 4 is installed in the air chamber 2, and the blocking block 4 corresponds to the first through groove 8. A limit block 12 is installed on one side of the block 4, and a locking structure is installed on the limit block 12.

[0027] In this embodiment, a sliding rod 6 is fixed on the blocking block 4, a sliding groove 5 is opened in the air chamber 2, and the sliding groove 5 corresponds to the sliding rod 6. A plug rod 7 is fixed on the blocking block 4, and the plug rod 7 is slidably connected to the cavity wall of the air chamber 2 and the box wall of the auxiliary box 10. One end of the plug rod 7 is fixedly connected to the limit block 12. The locking structure includes a card block 14. A card groove 13 is opened in the box wall of the auxiliary box 10, and the card groove 13 corresponds to the card block 14. The card block 14 is fixedly connected to the limit block 12, and the card block 14 is made of elastic material. A first electrode sheet 15 is fixed on the limit block 12, and a second electrode sheet 16 is fixed on the box wall of the auxiliary box 10. The first electrode sheet 15 corresponds to the second electrode sheet 16. An alarm 31 is fixed on the ring network switch device body 1, and the alarm 31 is connected to the first electrode sheet 15 and the second electrode sheet 16 through electric wires.

[0028] Specifically, under normal circumstances, the air pressure in the air chamber 2 is greater than the air pressure in the auxiliary box 10. At this time, the block 4 contacts the inner wall of the air chamber 2 under the action of the air pressure. Since the first through groove 8 and the second through groove 9 are in a misaligned state, the block 4 can completely block the first through groove 8. The auxiliary box 10 and the air chamber 2 are not connected at this time. When the insulating medium leaks, the air pressure in the air chamber 2 decreases, making the air pressure in the auxiliary box 10 greater than the air pressure in the air chamber 2, thereby pushing the block 4 to move to the relative inner side of the air chamber 2 through the pressure difference, so that there is a gap between the block 4 and the cavity wall of the air chamber 2. A gap is generated, and the first through groove 8 is connected with the second through groove 9 through the gap, so that the auxiliary box 10 and the air chamber 2 are in a connected state at this time, so that the insulating medium in the auxiliary box 10 can flow into the air chamber 2 through the first through groove 8 and the second through groove 9, so as to replenish the insulating medium in the air chamber 2, and prevent the insulating medium in the air chamber 2 from being reduced and causing danger, and the block 4 can be limited by the locking structure, that is, when the auxiliary box 10 is connected with the air chamber 2, the auxiliary box 10 and the air chamber 2 are always in a connected state, and the air pressure in the auxiliary box 10 and the air chamber 2 gradually tends to a balanced state.

[0029] And when the blocking block 4 slides, the blocking block 4 can drive the sliding rod 6 to slide in the sliding groove 5, and the blocking block 4 drives the plug rod 7 to slide, and the plug rod 7 slides in the air chamber 2 and the auxiliary box 10. One end of the plug rod 7 is located in the auxiliary box 10, and the other end of the plug rod 7 is located in the air chamber 2. The end of the plug rod 7 located in the auxiliary box 10 is fixedly connected to the limit block 12, and the end of the plug rod 7 located in the air chamber 2 is fixedly connected to the blocking block 4, so that the blocking block 4 drives the limit block 12 to move through the plug rod 7, and the limit block 12 drives the first electrode sheet 15 to move, so that the first electrode sheet 15 contacts the second electrode sheet 16, and the alarm 31 can be energized, so that the alarm 31 sends an alarm, thereby reminding the staff that the insulating medium in the air chamber 2 is leaking.

[0030] When the insulating medium leaks, the limit block 12 moves to drive the card block 14 to be inserted into the card slot 13, so that the card block 14 and the card slot 13 are in a card connection relationship, which can limit the position of the blocking block 4 and prevent the blocking block 4 from resetting to block the first through groove 8, thereby ensuring that the insulating medium in the auxiliary box 10 can enter the air chamber 2, thereby ensuring that the insulating medium in the air chamber 2 can be replenished.

[0031] In particular, a protrusion is fixed in the slot 13, one end of the block 14 and the protrusion are both triangular structures, the triangular structure is a right-angled triangle, and the inclined surface of the triangular structure is an arc-shaped surface. When the block 14 enters the slot 13, the protrusion squeezes the block 14, so that the elastic block 14 enters the slot 13 through the arc-shaped surface, thereby realizing the limiting relationship between the block 14 and the slot 13. After the block 14 is inserted into the slot 13, the right-angled surface of the protrusion is opposite to the right-angled surface of the block 14, thereby achieving a better limiting effect.

[0032] A film 11 is fixed in the auxiliary box 10, and a third electrode sheet 17 is fixed on the film 11. A fourth electrode sheet 18 is fixed in the box wall of the auxiliary box 10, and the third electrode sheet 17 corresponds to the fourth electrode sheet 18. A fan 24 is fixed on the auxiliary box 10, and the air outlet end of the fan 24 is connected to the auxiliary box 10, and the third electrode sheet 17 and the fourth electrode sheet 18 are connected to the main power switch. The film 11 is made of elastic material, and the two sides of the film 11 in the auxiliary box 10 are relatively independent. The side of the auxiliary box 10 close to the air chamber 2 is filled with insulating medium, and the side of the auxiliary box 10 close to the insulation board 19 is filled with air. Since the space inside the auxiliary box 10 is fixed, when the air pressure on the side filled with air in the auxiliary box 10 increases, the film 11 will be squeezed, so that the film 11 squeezes the side filled with insulating medium, thereby facilitating the delivery of the insulating medium into the air chamber 2.

[0033] Specifically, when the insulating medium leaks, the insulating medium in the auxiliary box 10 can enter the air chamber 2 to replenish the insulating medium in the air chamber 2. If the insulating medium continues to leak, the pressure in the auxiliary box 10 and the air chamber 2 reaches a balanced state, and the insulating medium in the auxiliary box 10 is difficult to enter the air chamber 2. At this time, the fan 24 can be started to make the fan 24 blow air into the auxiliary box 10, and the pressure on one side of the film 11 increases, so that a pressure difference is generated on both sides of the film 11, and the insulating medium on the other side of the film 11 can be completely pressed into the air chamber 2. When the insulating medium completely enters the air chamber 2, the film 11 is in contact with the box wall of the auxiliary box 10, that is, there is no insulating medium in the auxiliary box 10, and the insulating medium in the air chamber 2 cannot be replenished, and the insulating medium in the air chamber 2 is in a state of continuous reduction. At this time, the third electrode sheet 17 is in contact with the fourth electrode sheet 18, and the main power switch can be controlled to be turned off, so that the ring network switch device body 1 can be powered off to prevent danger caused by the reduction of the insulating medium and ensure the safety of the device.

[0034] A plurality of support rods 20 are fixed between the auxiliary box 10 and the heat insulation board 19 , and a first cooling fan 21 is fixed between the auxiliary box 10 and the heat insulation board 19 .

[0035] Specifically, the heat insulation plate 19 can be used to prevent the air chamber 2 from being accidentally touched, and the first heat dissipation fan 21 can be used to dissipate heat.

[0036] In particular, the box wall and support rod 20 of the auxiliary box 10 can be made of heat-conducting material. When a large amount of heat is generated in the air chamber 2, the heat can be discharged from the auxiliary box 10 and the support rod 20. More support rods 20 can increase the heat dissipation area, and then the first cooling fan 21 is started. At this time, since there is a gap between the auxiliary box 10 and the insulation board 19, a better ventilation effect can be achieved. The first cooling fan 21 can speed up the air flow, thereby speeding up the loss of heat on the surface of the support rod 20, improving the heat dissipation efficiency, and preventing one side of the insulation board 19 from being in a high temperature environment for a long time, causing the temperature of the insulation board 19 to rise, and preventing accidental touching of the insulation board 19 and causing burns.

[0037] The heat insulation board 19 and the auxiliary box 10 are both surrounding the circumference of the air chamber 2. When the temperature in the air chamber 2 is high, the high temperature in the air chamber 2 can be blocked by the heat insulation board 19 and the auxiliary box 10, thereby achieving a better heat insulation effect. At the same time, the heat can be dissipated by blowing air during transfer, thereby further improving the heat insulation effect. The heat insulation board 19 can also provide better protection for the air chamber 2. External objects cannot directly contact the air chamber 2. The air between the heat insulation board 19 and the auxiliary box 10 can provide a good buffering effect, thereby preventing external forces from colliding with the air chamber 2 and causing damage to the device.

[0038] An air inlet and an air outlet 23 are provided on one side of the control switch room 3. The heat dissipation structure includes a second heat dissipation fan 22 fixed in the air inlet. A connecting rod 27 is fixed on one side of the piston. The connecting rod 27 is slidably connected to the ring network switch device body 1. A fifth electrode sheet 29 is fixed to one end of the connecting rod 27. A limit rod 28 is fixed on the second heat dissipation fan 22. A sixth electrode sheet 30 is fixed on the limit rod 28. A plurality of springs 26 are fixed between the piston and the cavity wall of the air chamber 2. The fifth electrode sheet 29 and the sixth electrode sheet 30 are connected to the second heat dissipation fan 22 through wires. 22 is connected, the connecting rod 27 and the limiting rod 28 are both L-shaped structures, one end of the connecting rod 27 is located in the gap between the auxiliary box 10 and the insulation board 19, the gap can also limit the sliding of the connecting rod 27, and the side of the limiting rod 28 with the six electrode sheets 30 is located on the same plane as the side of the insulation board 19 close to the auxiliary box 10, so that when the connecting rod 27 contacts the insulation board 19, the connecting rod 27 can drive the fifth electrode sheet 29 to contact the sixth electrode sheet 30, so as to better control the opening and closing of the second cooling fan 22.

[0039] Specifically, when it is hotter, the air pressure in the air chamber 2 increases, thereby pushing the piston, so that the piston pushes the connecting rod 27 to move, and the spring 26 is compressed, so that the connecting rod 27 contacts the limit rod 28, so that the fifth electrode sheet 29 contacts the sixth electrode sheet 30, and the second cooling fan 22 can be energized to control the second cooling fan 22 to start, so that the second cooling fan 22 blows air into the control switch room 3, and the external cold air enters the ring network switch device body 1, and then is blown out from the air outlet 23 after heat exchange in the ring network switch device body 1, which can improve the heat dissipation effect in the control switch room 3 and prevent the parts in the control switch room 3 from being damaged due to excessive temperature.

[0040] In particular, when the temperature in the air chamber 2 is not so high, there is no need to start the second cooling fan 22 for heat dissipation. At this time, the air pressure in the air chamber 2 is reduced, causing the spring 26 to rebound, so that the spring 26 pushes the piston to move, and the piston resets. The piston drives the connecting rod 27 to move, and the connecting rod 27 drives the fifth electrode sheet 29 to reset, so that the fifth electrode sheet 29 is separated from the sixth electrode sheet 30, thereby stopping starting the second cooling fan 22. At this time, the natural flow of air through the air outlet 23 in the switch room 3 is controlled to dissipate heat, which can reduce energy waste.

[0041] When it is colder, the gas density in the air chamber 2 decreases and the air pressure decreases. At this time, the spring 26 can rebound and drive the piston to reset, so that the air pressure in the air chamber 2 can be compensated to prevent the block 4 from being accidentally touched due to the reduction in air pressure, thereby preventing a large amount of insulating medium in the auxiliary box 10 from entering the air chamber 2, thereby ensuring the safety of the device.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A gas insulated ring main switch device, comprising a ring main switch device body (1), characterized in that: The ring network switch device body (1) is provided with an air chamber (2) and a control switch chamber (3), a piston is installed in the air chamber (2), a heat dissipation structure is installed on the ring network switch device body (1), and the heat dissipation structure corresponds to the piston and the control switch chamber (3), an auxiliary box (10) is fixed on the ring network switch device body (1), and a heat insulation plate (19) is installed on the peripheral side of the auxiliary box (10), a first through groove (8) is opened in the auxiliary box (10) and the air chamber (2), a blocking block (4) is installed in the air chamber (2), the blocking block (4) corresponds to the first through groove (8), a limit block (12) is installed on one side of the blocking block (4), and a locking structure is installed on the limit block (12), a film (11) is fixed in the auxiliary box (10), a third electrode sheet (17) is fixed on the film (11), and a fourth electrode sheet (18) is fixed in the box wall of the auxiliary box (10), and the third electrode sheet (17) corresponds to the fourth electrode sheet (18).

2. A gas insulated ring main switchgear according to claim 1, characterized in that: A slide bar (6) is fixed on the blocking block (4), and a slide groove (5) is provided in the air chamber (2), wherein the slide groove (5) corresponds to the slide bar (6).

3. A gas insulated ring main switchgear according to claim 1, characterized in that: The blocking block (4) is fixed with an insertion rod (7), the insertion rod (7) being slidably connected to the cavity wall of the air chamber (2) and the box wall of the auxiliary box (10), and one end of the insertion rod (7) being fixedly connected to the limit block (12).

4. A gas insulated ring main switchgear according to claim 1, characterized in that: The locking structure comprises a clamping block (14); a clamping slot (13) is provided in a box wall of the auxiliary box (10); the clamping slot (13) corresponds to the clamping block (14); the clamping block (14) is fixedly connected to the limit block (12); and the clamping block (14) is made of elastic material.

5. The gas insulated ring main switchgear according to claim 1, characterized in that: A first electrode sheet (15) is fixed on the limit block (12), a second electrode sheet (16) is fixed on the box wall of the auxiliary box (10), the first electrode sheet (15) corresponds to the second electrode sheet (16), an alarm (31) is fixed on the ring network switch device body (1), and the alarm (31) is connected to the first electrode sheet (15) and the second electrode sheet (16) via electric wires.

6. The gas insulated ring main switchgear according to claim 1, characterized in that: A fan (24) is fixed on the auxiliary box (10), and an air outlet end of the fan (24) is connected to the auxiliary box (10).

7. The gas insulated ring main switchgear according to claim 1, characterized in that: A plurality of support rods (20) are fixed between the auxiliary box (10) and the heat insulation board (19), a first cooling fan (21) is fixed between the auxiliary box (10) and the heat insulation board (19), and the support rods (20) are of an L-shaped structure.

8. The gas insulated ring main switchgear according to claim 1, characterized in that: An air inlet and an air outlet (23) are provided on one side of the control switch room (3), and the heat dissipation structure comprises a second heat dissipation fan (22) fixed in the air inlet.

9. A gas insulated ring main switchgear according to claim 8, characterized in that: A connecting rod (27) is fixed on one side of the piston, the connecting rod (27) is an L-shaped structure, the connecting rod (27) is slidably connected to the ring network switch device body (1), a fifth electrode sheet (29) is fixed to one end of the connecting rod (27), a limit rod (28) is fixed on the second cooling fan (22), a sixth electrode sheet (30) is fixed on the limit rod (28), and a plurality of springs (26) are fixed between the piston and the cavity wall of the air chamber (2).

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