Vacuum arc-extinguishing chamber static end protection device

Abstract

The utility model discloses a vacuum arc-extinguishing chamber static end protection device, which relates to the technical field of vacuum arc-extinguishing chambers and comprises a base, a fixed table is fixedly mounted at the upper end of the base, a vacuum arc-extinguishing chamber is embedded at the upper end of the fixed table, and a movable conducting rod is fixedly mounted in the middle of the upper end of the vacuum arc-extinguishing chamber. Sliding grooves are formed in the left side and the right side of the interior of the fixing table, clamping blocks are slidably connected to the sides, close to the central axis, of the sliding grooves, and a plurality of springs are arranged between the clamping blocks and the sliding grooves. According to the static end protection device for the vacuum arc-extinguishing chamber, the vacuum arc-extinguishing chamber is clamped on the fixing table through cooperation of the clamping block and the spring, the sponge pad in the clamping groove can protect the static end and prevent the static end from being damaged due to collision in the conveying process, meanwhile, the balance weight of the static end of the vacuum arc-extinguishing chamber is increased through arrangement of the fixing table and the base, and the static end is protected. The vacuum arc-extinguishing chamber is prevented from toppling and damaging the static end during conveying, the vacuum arc-extinguishing chamber can be conveniently taken down from the fixed table through the push rod, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum interrupter chambers, in particular to a static end protection device for a vacuum interrupter chamber. Background Art

[0002] The vacuum interrupter, also known as the vacuum switch tube, is the core component of medium and high voltage power switches. Its main function is to quickly extinguish the arc and suppress the current after the medium and high voltage circuit is cut off from the power supply through the excellent insulation of the vacuum inside the tube, so as to avoid accidents and unexpected events. It is mainly used in power transmission and distribution control systems, as well as in power distribution systems in metallurgy, mining, petroleum, chemical industry, railways, broadcasting, communications, industrial high-frequency heating, etc.

[0003] For example, the utility model with application number CN202022417425.6 discloses a vacuum arc chamber static end protection device and a vacuum arc chamber, the vacuum arc chamber static end protection device includes a static end structural member and an electrical contact surface arranged on the static end structural member, the electrical contact surface is provided with a mounting hole, the vacuum arc chamber static end protection device includes a protective cover and a mounting column fixedly connected to the protective cover, the mounting column is plugged into the mounting hole, the protective cover covers the electrical contact surface in a direction parallel to the axis of the mounting hole, and the protective cover and the electrical contact surface are spaced apart. The vacuum arc chamber static end protection device solves the problem that the electrical contact surface of the vacuum arc chamber structural member is easily scratched and bumped during production and transportation.

[0004] Similar to the above application, there are still the following shortcomings: the static end protection device of the vacuum interrupter protects the static end through a protective cover, but the vacuum interrupter is still easy to tip over during transportation, causing damage to the static end, and the installation and disassembly of the protection device is relatively inconvenient. Therefore, in view of this, the existing structure and defects are studied and improved, and a static end protection device of the vacuum interrupter is proposed. Utility Model Content

[0005] The utility model aims to provide a vacuum interrupter static end protection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum arc chamber static end protection device, comprising a base, a fixed platform fixedly installed on the upper end of the base, a vacuum arc chamber embedded in the upper end of the fixed platform, a moving conductive rod fixedly installed in the middle of the upper end of the vacuum arc chamber, sliding grooves are provided on the left and right sides of the interior of the fixed platform, a clamping block is slidably connected to the side of the sliding groove close to the central axis, a plurality of springs are arranged between the clamping block and the sliding groove, a card slot is provided in the middle of the upper end of the fixed platform, a sponge pad is bonded to the bottom end of the card slot, a push rod is slidably connected to the front and rear ends of the sliding groove, an anti-slip pad is bonded to the lower end of the base, and a rubber pad is bonded to the side of the clamping block close to the central axis.

[0007] Furthermore, a first moisture-proof plate is embedded on the left side of the upper end of the vacuum interrupter, and a second moisture-proof plate is embedded on the right side of the upper end of the vacuum interrupter.

[0008] Furthermore, a heat sink is welded to the outer side of the moving conductive rod, and a plurality of heat dissipation grooves are provided on the heat sink.

[0009] Furthermore, the upper and lower ends of the push rod are welded to limit blocks, and the upper and lower ends of the slide groove are provided with limit grooves.

[0010] Furthermore, the inner diameter of the limiting groove matches the outer diameter of the limiting block.

[0011] Furthermore, a groove is provided on the right side of the first moisture-proof plate, and a clamping block is welded and connected on the right side of the second moisture-proof plate.

[0012] Furthermore, a sealing ring is bonded to the middle of the first moisture-proof plate and the second moisture-proof plate on one side close to the central axis, and locking blocks are fixedly installed on the upper ends of the first moisture-proof plate and the second moisture-proof plate.

[0013] The utility model provides a vacuum interrupter static end protection device, which has the following beneficial effects:

[0014] Firstly, the utility model clamps the vacuum interrupter on the fixed platform through the cooperation of the clamping block and the spring, and the sponge pad in the clamping groove protects the static end to prevent the static end from being damaged due to collision during transportation. At the same time, the setting of the fixed platform and the base increases the counterweight of the static end of the vacuum interrupter to prevent the static end from being damaged by tipping over during transportation. The vacuum interrupter can be conveniently removed from the fixed platform by the push rod, thereby improving work efficiency.

[0015] Secondly, the utility model protects the vacuum arc chamber used in outdoor installation through the cooperation of the first moisture-proof plate and the second moisture-proof plate to prevent water vapor from entering the interior of the vacuum arc chamber and causing a short circuit. At the same time, the arrangement of the groove and the block improves the tightness of the fit between the first moisture-proof plate and the second moisture-proof plate, further preventing the entry of water vapor. At the same time, the first moisture-proof plate and the second moisture-proof plate, which are narrow at the top and wide at the bottom, can guide the water vapor condensed on the surface to drip down, preventing the water vapor from dripping on the static end.

[0016] Third, the utility model improves the stability of the push rod when it slides through the cooperation between the limit block and the limit groove, prevents the structural deviation from affecting the clamping and taking of the vacuum arc extinguishing chamber, and through the cooperation between the heat sink and the heat sink, the heat sink increases the contact area between the moving conductive rod and the air, improves the heat dissipation efficiency, and the heat sink further increases the contact area between the moving conductive rod and the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a vacuum interrupter static end protection device of the utility model;

[0018] Figure 2 It is a schematic diagram of a top view cross-sectional structure of a fixing platform of a vacuum interrupter static end protection device of the utility model;

[0019] Figure 3 It is a right side cross-sectional structural schematic diagram of a fixing platform of a vacuum interrupter static end protection device of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of a first moisture-proof plate and a second moisture-proof plate of a vacuum interrupter static end protection device of the utility model.

[0021] In the figure: 1. base; 2. fixing table; 3. vacuum arc extinguishing chamber; 4. first moisture-proof plate; 5. second moisture-proof plate; 6. moving conductive rod; 7. heat sink; 8. heat dissipation groove; 9. slide groove; 10. clamping block; 11. spring; 12. slot; 13. sponge pad; 14. push rod; 15. anti-skid pad; 16. rubber pad; 17. limit block; 18. limit slot; 19. block; 20. groove; 21. locking block; 22. sealing ring. DETAILED DESCRIPTION

[0022] See also Figure 1 The utility model provides a technical solution: a vacuum arc chamber static end protection device, comprising a base 1, a fixing platform 2 is fixedly installed on the upper end of the base 1, a vacuum arc chamber 3 is embedded on the upper end of the fixing platform 2, a first moisture-proof plate 4 is embedded on the left side of the upper end of the vacuum arc chamber 3, a second moisture-proof plate 5 is embedded on the right side of the upper end of the vacuum arc chamber 3, a moving conductive rod 6 is fixedly installed on the middle part of the upper end of the vacuum arc chamber 3, a heat sink 7 is welded and connected to the outer side of the moving conductive rod 6, a plurality of heat dissipation grooves 8 are opened on the heat sink 7, the heat sink 7 increases the contact area between the moving conductive rod 6 and the air, and improves the heat dissipation efficiency of the moving conductive rod 6, and at the same time, the heat dissipation grooves 8 on the heat sink 7 increase the contact area between the heat sink 7 and the air, and further improve the heat dissipation efficiency of the moving conductive rod 6;

[0023] See also Figure 2, a slide groove 9 is opened on the left and right sides of the fixed platform 2, and a clamping block 10 is slidably connected to the slide groove 9 near the central axis. A plurality of springs 11 are arranged between the clamping block 10 and the slide groove 9, a card slot 12 is opened in the middle of the upper end of the fixed platform 2, and a sponge pad 13 is bonded to the bottom end of the card slot 12, a push rod 14 is slidably connected to the front and rear ends of the slide groove 9, an anti-slip pad 15 is bonded to the lower end of the base 1, a rubber pad 16 is bonded to the side of the clamping block 10 near the central axis, and a limited block 17 is welded to the upper and lower ends of the push rod 14, and a limited slot 18 is opened at the upper and lower ends of the slide groove 9. Through the spring 11 Cooperating with the clamping block 10, the vacuum interrupter 3 is clamped into the clamping slot 12. The setting of the rubber pad 16 improves the stability of the clamping block 10 when clamping, and prevents the vacuum interrupter 3 from loosening and causing damage. The sponge pad 13 in the clamping slot 12 contacts the static end to protect the static end. By sliding the push rod 14 inward, the clamping block 10 can be driven to retract the compression spring 11, so as to realize the quick disassembly of the vacuum interrupter 3 and improve the work efficiency. When the push rod 14 slides inside the slide slot 9, the limit block 17 will also slide in the limit slot 18, so as to improve the stability of the push rod 14 when sliding;

[0024] See also Figure 3 and Figure 4 A groove 20 is provided on the right side of the first moisture-proof plate 4, and a block 19 is welded on the right side of the second moisture-proof plate 5. A sealing ring 22 is bonded to the middle part of the first moisture-proof plate 4 and the second moisture-proof plate 5 close to the central axis. Locking blocks 21 are fixedly installed on the upper ends of the first moisture-proof plate 4 and the second moisture-proof plate 5. When the first moisture-proof plate 4 and the second moisture-proof plate 5 are installed, the block 19 will be stuck in the groove 20 to improve the tightness of the first moisture-proof plate 4 and the second moisture-proof plate 5, and prevent water vapor from entering the vacuum arc chamber 3 and causing a short circuit. The setting of the sealing ring 22 prevents water vapor from entering the vacuum arc chamber 3 along the moving conductive rod 6.

[0025] Working principle: First, according to Figure 2 and Figure 3 , squeeze the push rod 14 inward, the push rod 14 will slide into the slide groove 9, and the limit block 17 on the push rod 14 will also slide in the limit groove 18 in the slide groove 9, thereby improving the stability of the push rod 14 when sliding. The push rod 14 slides inward to compress the clamping block 10 to slide to both sides. When the clamping block 10 slides to both sides, the spring 11 will also shrink accordingly, and the vacuum arc chamber 3 is inserted into the slot 12. Release the push rod 14, and the spring 11 resets to drive the clamping block 10 to clamp the vacuum arc chamber 3. The setting of the rubber pad 16 improves the stability of the clamping block 10 when clamping, thereby preventing the vacuum arc chamber 3 from loosening and causing damage. The sponge pad 13 in the slot 12 contacts the static end to protect the static end.

[0026] Then according to Figure 1A plurality of heat sinks 7 are provided on the moving conductive rod 6, and the heat sink 7 increases the contact area between the moving conductive rod 6 and the air, thereby improving the heat dissipation efficiency of the moving conductive rod 6. Meanwhile, the heat dissipation grooves 8 on the heat sink 7 increase the contact area between the heat sink 7 and the air, thereby further improving the heat dissipation efficiency of the moving conductive rod 6.

[0027] Finally, according to Figure 1 and Figure 4 When the first moisture-proof board 4 and the second moisture-proof board 5 need to be installed for outdoor use, the block 19 on the second moisture-proof board 5 will be inserted into the groove 20 on the first moisture-proof board 4, so that the first moisture-proof board 4 and the second moisture-proof board 5 are tightly fitted to prevent water vapor from entering the vacuum arc chamber 3 and causing a short circuit, and then the nut is inserted into the locking block 21 to fix the first moisture-proof board 4 and the second moisture-proof board 5. The setting of the sealing ring 22 prevents water vapor from entering the vacuum arc chamber 3 along the moving conductive rod 6. At the same time, after the first moisture-proof board 4 and the second moisture-proof board 5 are installed, a truncated cone with a narrow top and a wide bottom is formed, which is convenient for guiding away water droplets condensed on the surface and protecting the safety of the vacuum arc extinguishing end.

Claims

1. A vacuum interrupter static end protection device, characterized in that: The invention comprises a base (1), wherein a fixed platform (2) is fixedly mounted on the upper end of the base (1), a vacuum arc extinguishing chamber (3) is embedded on the upper end of the fixed platform (2), a moving conductive rod (6) is fixedly mounted on the middle part of the upper end of the vacuum arc extinguishing chamber (3), a slide groove (9) is provided on the left and right sides of the interior of the fixed platform (2), a clamping block (10) is slidably connected to the side of the slide groove (9) close to the central axis, a plurality of springs (11) are arranged between the clamping block (10) and the slide groove (9), a clamping groove (12) is provided in the middle part of the upper end of the fixed platform (2), a sponge pad (13) is bonded to the bottom end of the clamping groove (12), a push rod (14) is slidably connected to the front and rear ends of the slide groove (9), an anti-slip pad (15) is bonded to the lower end of the base (1), and a rubber pad (16) is bonded to the side of the clamping block (10) close to the central axis.

2. A vacuum interrupter static end protection device according to claim 1, characterized in that: A first moisture-proof plate (4) is embedded on the left side of the upper end of the vacuum interrupter (3), and a second moisture-proof plate (5) is embedded on the right side of the upper end of the vacuum interrupter (3).

3. A vacuum interrupter static end protection device according to claim 1, characterized in that: A heat sink (7) is welded and connected to the outer side of the moving conductive rod (6), and a plurality of heat dissipation grooves (8) are provided on the heat sink (7).

4. A vacuum interrupter static end protection device according to claim 1, characterized in that: The upper and lower ends of the push rod (14) are welded to a limiting block (17), and the upper and lower ends of the slide groove (9) are provided with limiting grooves (18).

5. A vacuum interrupter static end protection device according to claim 4, characterized in that: The inner diameter of the limiting groove (18) matches the outer diameter of the limiting block (17).

6. A vacuum interrupter static end protection device according to claim 2, characterized in that: A groove (20) is provided on the right side of the first moisture-proof plate (4), and a clamping block (19) is welded and connected to the right side of the second moisture-proof plate (5).

7. A vacuum interrupter static end protection device according to claim 2, characterized in that: A sealing ring (22) is bonded to the middle of the first moisture-proof plate (4) and the second moisture-proof plate (5) on one side close to the central axis, and a locking block (21) is fixedly installed on the upper end of the first moisture-proof plate (4) and the second moisture-proof plate (5).

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