Heat dissipation mechanism for arc extinguish chamber of circuit breaker

Abstract

The utility model relates to the field of circuit breaker arc extinguish chambers, in particular to a heat dissipation mechanism of a circuit breaker arc extinguish chamber, which comprises an insulating sleeve. The power distribution cabinet further comprises a first limiting ring, a second limiting ring, inserting holes, inserting sleeve rods, elastic connecting pieces, reset springs and arc-shaped heat dissipation sleeves, the first limiting ring and the second limiting ring are symmetrically installed on the outer side of the insulating sleeve, the four inserting holes are symmetrically formed in the top of the first limiting ring and the top of the second limiting ring, and the inserting sleeve rods are arranged in the inserting holes. An elastic connecting piece is mounted in the inserting sleeve rod; by pressing the two sides of the elastic connecting piece, the elastic connecting piece can press the reset spring to contract inwards, and the inserting sleeve rod can be inserted into the bottom of the inserting hole, so that the position of the arc-shaped heat dissipation sleeve is limited, and the purpose of quick installation is achieved; the dismounting purpose can be achieved only by pressing the two sides of the elastic connecting piece to enable the elastic connecting piece to pass through the insertion holes, and the practicability of the heat dissipation structure of the circuit breaker is improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit breaker arc extinguishing chambers, in particular to a heat dissipation mechanism of a circuit breaker arc extinguishing chamber. Background Art

[0002] In high-voltage and ultra-high-voltage transmission lines, the arc extinguishing chamber of the circuit breaker plays a key role in circuit distribution and ensuring circuit safety, and is an important component in the circuit system.

[0003] Common circuit breaker arc extinguishing chambers usually use an integrated heat dissipation sleeve and heat dissipation plate for heat dissipation, which can dissipate heat for the circuit breaker. However, they lack a quick-release structure and cannot be quickly installed and disassembled. As a result, it is difficult to remove and replace the heat dissipation structure after long-term use. As a result, the circuit breaker may need to be completely dismantled during maintenance, affecting the normal use of the circuit breaker and reducing the practicality and maintenance cost of the circuit breaker.

[0004] Therefore, in view of the fact that the above-mentioned circuit breaker arc extinguishing chamber lacks a quick-release structure and the heat dissipation structure cannot be quickly installed and disassembled, a heat dissipation mechanism for the circuit breaker arc extinguishing chamber can be designed. By pressing the two sides of the elastic connector, the reset spring can be pressed inward to shrink. When the reset spring shrinks, the plug-in sleeve rod can be inserted into the inside of the plug-in hole. When the plug-in sleeve rod is inserted into the bottom of the plug-in hole, the reset spring will be released from compression, so that the elastic connector is located at the bottom of the limit ring, so as to limit the position of the arc-shaped heat dissipation sleeve and achieve the purpose of quick installation. When the arc-shaped heat dissipation sleeve needs to be disassembled as a whole, it is only necessary to press the two sides of the elastic connector to enable it to pass through the plug-in hole to achieve the purpose of disassembly, thereby improving the practicality of the circuit breaker heat dissipation structure. Utility Model Content

[0005] In order to overcome the common problem of arc extinguishing chamber of circuit breaker lacking quick-disassembly structure, the heat dissipation structure cannot be quickly installed and disassembled, resulting in difficulty in removing and replacing the heat dissipation structure after long-term use. As a result, the circuit breaker may need to be completely dismantled during maintenance, affecting the normal use of the circuit breaker and reducing the practicality and maintenance cost of the circuit breaker.

[0006] The technical solution of the utility model is as follows: a heat dissipation mechanism of an arc extinguishing chamber of a circuit breaker includes an insulating sleeve; further includes a first limiting ring, a second limiting ring, a plug-in hole, a plug-in sleeve rod, an elastic connector, a reset spring and an arc-shaped heat dissipation sleeve, the first limiting ring and the second limiting ring are symmetrically installed on the outer side of the insulating sleeve, four plug-in holes are symmetrically opened on the top of the first limiting ring and the second limiting ring, the plug-in sleeve rod is provided inside the plug-in hole, the elastic connector is installed inside the plug-in sleeve rod, the inner lower end of the elastic connector is connected to the reset spring, the upper side of the first limiting ring and the lower side of the second limiting ring are provided with the arc-shaped heat dissipation sleeve, and one end of the plug-in sleeve rod is connected to the arc-shaped heat dissipation sleeve.

[0007] Preferably, by pressing the two sides of the elastic connector, the reset spring can be pressed inward to shrink. When the reset spring shrinks, the plug sleeve rod can be inserted into the inside of the plug hole. When the plug sleeve rod is inserted into the bottom of the plug hole, the reset spring will be released from compression, so that the elastic connector is located at the bottom of the first limit ring and the second limit ring, so as to limit the position of the arc-shaped heat dissipation sleeve, thereby achieving the purpose of quick installation. When the arc-shaped heat dissipation sleeve needs to be disassembled as a whole, it is only necessary to press the two sides of the elastic connector to enable it to pass through the plug hole to achieve the purpose of disassembly, thereby improving the practicality of the heat dissipation structure of the circuit breaker.

[0008] Preferably, a mounting cavity is provided on the top of the arc-shaped heat dissipation sleeve, a heat dissipation plate is provided inside the mounting cavity, and heat-conducting columns are symmetrically installed at equal intervals on the top of the heat dissipation plate.

[0009] Preferably, a baffle is installed on the top of the arc-shaped heat dissipation sleeve, a heat dissipation hole is opened on the top of the baffle at the position corresponding to the heat-conducting column, and fixing blocks are symmetrically connected to both ends of the baffle.

[0010] Preferably, a dynamic end cover plate is provided at the bottom of the insulating sleeve, a dynamic conductive rod is connected through the top of the dynamic end cover plate, and a bellows is connected to the lower end of the outer side of the dynamic conductive rod.

[0011] Preferably, a connecting sleeve is provided on the outer side of the moving conductive rod corresponding to the upper end of the bellows, a lower contact is provided on the upper side of the connecting sleeve, and the upper end of the moving conductive rod passes through the connecting sleeve and is connected to the lower side of the lower contact.

[0012] Preferably, an upper contact is provided on the upper side of the lower contact, a static conductive rod is connected to the upper side of the upper contact, a shielding cover is provided at the outer lower end of the static conductive rod corresponding to the upper side of the upper contact, and the top of the static conductive rod is connected to the static end cover.

[0013] Preferably, the plug-in sleeve rod is connected to the arc-shaped heat dissipation sleeve by welding, and the elastic connecting member is a component made of silicone high-silicon oxide material.

[0014] Beneficial effects of the utility model:

[0015] 1. By pressing both sides of the elastic connector, the reset spring can be pressed inward to shrink. When the reset spring shrinks, the plug-in sleeve rod can be inserted into the inside of the plug-in hole. When the plug-in sleeve rod is inserted into the bottom of the plug-in hole, the reset spring will be released from compression, so that the elastic connector is located at the bottom of the first limiting ring and the second limiting ring, so as to limit the position of the arc-shaped heat dissipation sleeve, thereby achieving the purpose of quick installation. When the arc-shaped heat dissipation sleeve needs to be disassembled as a whole, it is only necessary to press both sides of the elastic connector to enable it to pass through the plug-in hole to achieve the purpose of disassembly, thereby improving the practicality of the heat dissipation structure of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the heat dissipation mechanism of the arc extinguishing chamber of the circuit breaker of the present invention;

[0017] Figure 2 Shown is a schematic diagram of the heat dissipation mechanism of the arc extinguishing chamber of the circuit breaker of the present invention when viewed from above;

[0018] Figure 3 Shown is a schematic diagram of the explosion structure of the arc-shaped heat dissipation sleeve of the heat dissipation mechanism of the circuit breaker arc extinguishing chamber of the present invention;

[0019] Figure 4 Shown is a schematic diagram of the explosion structure of the elastic connector of the heat dissipation mechanism of the arc extinguishing chamber of the circuit breaker of the present invention;

[0020] Figure 5 Shown is a schematic diagram of the explosion structure of the insulating sleeve of the heat dissipation mechanism of the arc extinguishing chamber of the circuit breaker of the present invention.

[0021] Explanation of the accompanying symbols: 1. Insulating sleeve; 2. First limiting ring; 3. Second limiting ring; 4. Plug-in hole; 5. Plug-in sleeve rod; 6. Elastic connector; 7. Reset spring; 8. Arc-shaped heat dissipation sleeve; 9. Mounting cavity; 10. Heat dissipation plate; 11. Heat-conducting column; 12. Baffle; 13. Heat dissipation hole; 14. Fixed block; 15. Moving end cover; 16. Moving conductive rod; 17. Bellows; 18. Connecting sleeve; 19. Lower contact; 20. Upper contact; 21. Shielding cover; 22. Static conductive rod; 23. Static end cover. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] See also Figure 1-Figure 5The utility model provides an embodiment: a heat dissipation mechanism of an arc extinguishing chamber of a circuit breaker includes an insulating sleeve 1; it also includes a first limiting ring 2, a second limiting ring 3, a plug hole 4, a plug sleeve rod 5, an elastic connector 6, a reset spring 7 and an arc-shaped heat dissipation sleeve 8. The first limiting ring 2 and the second limiting ring 3 are symmetrically installed on the outside of the insulating sleeve 1. Four plug holes 4 are symmetrically opened on the top of the first limiting ring 2 and the second limiting ring 3. The plug holes 4 are internally provided with a plug sleeve rod 5. The plug sleeve rod 5 is internally provided with an elastic connector 6. The inner lower end of the elastic connector 6 is connected to the reset spring 7. The upper side of the first limiting ring 2 and the lower side of the second limiting ring 3 are provided with an arc-shaped heat dissipation sleeve 8. One end of the plug sleeve rod 5 is provided with a plurality of The end is connected to the arc-shaped heat dissipation sleeve 8. By pressing the two sides of the elastic connector 6, the reset spring 7 can be pressed inward to shrink. When the reset spring 7 shrinks, the plug-in sleeve rod 5 can be inserted into the inside of the plug hole 4. When the plug-in sleeve rod 5 is inserted into the bottom of the plug hole 4, the reset spring 7 will be released from compression, so that the elastic connector 6 is located at the bottom of the first limit ring 2 and the second limit ring 3, so as to limit the position of the arc-shaped heat dissipation sleeve 8, thereby achieving the purpose of quick installation. When the arc-shaped heat dissipation sleeve 8 needs to be disassembled as a whole, it is only necessary to press the two sides of the elastic connector 6 so that it can pass through the plug hole 4 to achieve the purpose of disassembly, thereby improving the practicality of the heat dissipation structure of the circuit breaker.

[0024] See also Figure 1-Figure 5 In this embodiment, a mounting cavity 9 is provided at the top of the arc-shaped heat dissipation sleeve 8, and a heat dissipation plate 10 is provided inside the mounting cavity 9. Heat-conducting columns 11 are symmetrically installed on the top of the heat dissipation plate 10 at equal intervals. The heat dissipation plate 10 can be used to absorb the heat emitted by the circuit breaker, and the heat is quickly dissipated through multiple heat-conducting columns 11, thereby achieving an efficient heat dissipation effect. A baffle 12 is installed on the top of the arc-shaped heat dissipation sleeve 8, and a heat dissipation hole 13 is provided on the top of the baffle 12 corresponding to the position of the heat-conducting column 11, and a fixing block 14 is symmetrically connected to both ends of the baffle 12. The baffle 12 can be used to adjust the arc-shaped heat dissipation sleeve 8. The top is protected, and the heat dissipation can be accelerated through the heat dissipation holes 13 to achieve the effect of auxiliary heat dissipation. A dynamic end cover 15 is provided at the bottom of the insulating sleeve 1. The top of the dynamic end cover 15 is connected with a dynamic conductive rod 16. The lower end of the outer side of the dynamic conductive rod 16 is connected with a bellows 17. The dynamic end cover 15 can be used to seal the bottom of the insulating sleeve 1. By controlling the dynamic conductive rod 16 to move upward, its upper end can be electrically connected to the static conductive rod 22, thereby allowing current to pass through, and the bellows 17 can contract when the dynamic conductive rod 16 moves to achieve the effect of improving stability.

[0025] See also Figure 1-Figure 5In this embodiment, a connecting sleeve 18 is provided on the outer side of the dynamic conductive rod 16 corresponding to the upper end of the bellows 17, and a lower contact 19 is provided on the upper side of the connecting sleeve 18. The upper end of the dynamic conductive rod 16 passes through the connecting sleeve 18 and is connected to the lower side of the lower contact 19. The movement of the dynamic conductive rod 16 drives the lower contact 19 to move upward. When the lower contact 19 moves to contact the upper contact 20, the current in the dynamic conductive rod 16 is connected to the static conductive rod 22. An upper contact 20 is provided on the upper side of the lower contact 19, and a static conductive rod 22 is connected to the upper side of the upper contact 20. A shielding cover 21 is provided on the outer lower end of the static conductive rod 22 corresponding to the upper side of the upper contact 20, and The top of the static conductive rod 22 is connected to a static end cover 23, and the static conductive rod 22 can be used to passively receive current. By providing a shielding cover 21 on the upper side of the upper contact 20, the residual energy can be absorbed when the lower contact 19 and the upper contact 20 are separated to achieve the purpose of extinguishing the arc. The plug-in sleeve rod 5 is connected to the arc-shaped heat dissipation sleeve 8 by welding, and the elastic connector 6 is a component made of silicone high-silicon oxide material. The elastic connector 6 is made of silicone high-silicon oxide material, which can maintain its characteristics in a high-temperature environment, thereby improving the service life of the elastic connector 6 and avoiding damage to the heat dissipation structure caused by the falling off of the elastic connector 6.

[0026] During operation, the insulating sleeve 1 can be used to protect the internal circuit breaker to avoid leakage, and by controlling the upward movement of the dynamic conductive rod 16, its upper end can be electrically connected to the static conductive rod 22, thereby allowing current to pass, and the bellows 17 can be contracted when the dynamic conductive rod 16 moves to achieve the effect of improving stability, and the static conductive rod 22 can be used to passively receive current, and by providing a shielding cover 21 on the upper side of the upper contact 20, the residual energy can be absorbed when the lower contact 19 and the upper contact 20 are separated to achieve the purpose of extinguishing the arc, and at the same time, by pressing the two sides of the elastic connector 6, the reset spring 7 can be compressed inwardly. When the reset spring 7 contracts, the plug sleeve rod 5 can be inserted into the inside of the plug hole 4. When the plug sleeve rod 5 is plugged in, the plug sleeve rod 5 is inserted into the plug hole 4. After being inserted into the bottom of the plug hole 4, the return spring 7 will be released from compression, so that the elastic connector 6 is located at the bottom of the first limit ring 2 and the second limit ring 3, so as to limit the position of the arc-shaped heat dissipation sleeve 8, thereby achieving the purpose of quick installation. When the arc-shaped heat dissipation sleeve 8 needs to be disassembled as a whole, it is only necessary to press the two sides of the elastic connector 6 so that it can pass through the plug hole 4 to achieve the purpose of disassembly, thereby improving the practicality of the heat dissipation structure of the circuit breaker, and the heat dissipation plate 10 can be used to absorb the heat dissipated by the circuit breaker, and the heat is quickly dissipated through multiple heat-conducting columns 11, thereby achieving the effect of efficient heat dissipation. The baffle 12 can be used to protect the top of the arc-shaped heat dissipation sleeve 8, and the heat dissipation holes 13 can be used to accelerate the dissipation of heat to achieve the effect of auxiliary heat dissipation.

[0027] When the locking nut 5 is unlocked, the locking nut 5 is unlocked, and the locking nut 5 is unlocked, so that the locking nut 5 is unlocked.

Claims

1. A heat dissipation mechanism for an arc extinguishing chamber of a circuit breaker, comprising an insulating sleeve (1); characterized in that: The insulating sleeve (1) further comprises a first limiting ring (2), a second limiting ring (3), a plug hole (4), a plug sleeve rod (5), an elastic connector (6), a reset spring (7) and an arc-shaped heat dissipation sleeve (8); the first limiting ring (2) and the second limiting ring (3) are symmetrically installed on the outer side of the insulating sleeve (1); four plug holes (4) are symmetrically opened on the top of the first limiting ring (2) and the second limiting ring (3); a plug sleeve rod (5) is arranged inside the plug hole (4); an elastic connector (6) is installed inside the plug sleeve rod (5); a reset spring (7) is connected to the inner lower end of the elastic connector (6); an arc-shaped heat dissipation sleeve (8) is arranged on the upper side of the first limiting ring (2) and the lower side of the second limiting ring (3); and one end of the plug sleeve rod (5) is connected to the arc-shaped heat dissipation sleeve (8).

2. The heat dissipation mechanism for the arc extinguishing chamber of a circuit breaker according to claim 1, characterized in that: A mounting cavity (9) is provided on the top of the arc-shaped heat dissipation sleeve (8), a heat dissipation plate (10) is provided inside the mounting cavity (9), and heat-conducting columns (11) are symmetrically installed at equal intervals on the top of the heat dissipation plate (10).

3. The heat dissipation mechanism for the arc extinguishing chamber of a circuit breaker according to claim 1, characterized in that: A baffle (12) is installed on the top of the arc-shaped heat dissipation sleeve (8), a heat dissipation hole (13) is opened at the top of the baffle (12) at a position corresponding to the heat-conducting column (11), and fixed blocks (14) are symmetrically connected at both ends of the baffle (12).

4. The heat dissipation mechanism for the arc extinguishing chamber of a circuit breaker according to claim 1, characterized in that: A movable end cover plate (15) is provided at the bottom of the insulating sleeve (1), a movable conductive rod (16) is connected through the top of the movable end cover plate (15), and a bellows (17) is connected to the outer lower end of the movable conductive rod (16).

5. The heat dissipation mechanism for the arc extinguishing chamber of a circuit breaker according to claim 4, characterized in that: A connecting sleeve (18) is provided on the outer side of the movable conductive rod (16) corresponding to the upper end of the corrugated tube (17), a lower contact (19) is provided on the upper side of the connecting sleeve (18), and the upper end of the movable conductive rod (16) passes through the connecting sleeve (18) and is connected to the lower side of the lower contact (19).

6. The heat dissipation mechanism for the arc extinguishing chamber of a circuit breaker according to claim 5, characterized in that: An upper contact (20) is provided on the upper side of the lower contact (19), a static conductive rod (22) is connected to the upper side of the upper contact (20), a shielding cover (21) is provided at the outer lower end of the static conductive rod (22) corresponding to the upper side of the upper contact (20), and a static end cover plate (23) is connected to the top end of the static conductive rod (22).

7. The heat dissipation mechanism for the arc extinguishing chamber of a circuit breaker according to claim 1, characterized in that: The plug-in sleeve rod (5) is connected to the arc-shaped heat dissipation sleeve (8) by welding, and the elastic connecting member (6) is a component made of a silicone high-silicon oxide material.

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