A heat dissipation structure of an arc extinguishing chamber

Abstract

The utility model provides a kind of heat dissipation structure of arc extinguishing chamber, including main component, the main component includes insulating shell and shielding cylinder;The inner side wall of the insulating shell is fixedly connected with shielding cylinder, and the insulating shell is filled with heat-conducting filler between shielding cylinder;Two ends of the main component are provided with heat dissipation component, and the heat dissipation component includes static cover plate, radiating fin, micro heat pipe, through slot, dynamic cover plate and through-hole;The top of the insulating shell is fixedly connected with static cover plate, and the static cover plate is internally hollow structure, and the inner side wall of the static cover plate is uniformly fixedly connected with radiating fin.The utility model is installed multiple micro heat pipes outside shielding cylinder, and the heat exchange efficiency of micro heat pipe is improved by heat-conducting filler, heat inside arc extinguishing chamber can be quickly transferred to external environment, prevent local temperature in arc extinguishing chamber from being too high.Through the through-hole being set in dynamic cover plate bottom, to facilitate the exchange of internal and external air when moving dynamic end electric pole, improve the heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to a heat dissipation structure, and more particularly to a heat dissipation structure for an arc-extinguishing chamber, belonging to the technical field of arc-extinguishing chambers. Background Technology

[0002] Arc-extinguishing chambers are crucial core components in switchgear, primarily used to extinguish electric arcs and ensure the safe and stable operation of power systems. When a switchgear breaks a circuit, a high-temperature, high-energy arc is generated between the contacts. If not extinguished in time, it can not only burn the contacts but also potentially cause serious accidents such as short circuits. With the development of power technology, arc-extinguishing chambers are continuously moving towards miniaturization, high reliability, and intelligence, providing a solid guarantee for the safe and efficient operation of modern power systems.

[0003] Existing arc-extinguishing chambers primarily rely on natural cooling for heat dissipation, which is slow. When an arc is generated during circuit interruption, the arc energy causes a rapid increase in temperature of the contacts and surrounding components, accumulating a large amount of heat in a short period. However, due to the complex internal structure of the arc-extinguishing chamber, the heat cannot be dissipated in time during natural cooling, leading to excessively high local temperatures. This severely affects the insulation performance and service life of the arc-extinguishing chamber, and may even cause problems such as aging of insulation materials and accelerated contact erosion due to heat accumulation. Therefore, a heat dissipation structure for arc-extinguishing chambers is proposed. Utility Model Content

[0004] In view of this, the present invention provides a heat dissipation structure for an arc-extinguishing chamber to solve or alleviate one of the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0005] The technical solution of this utility model embodiment is implemented as follows: a heat dissipation structure for an arc-extinguishing chamber includes a main component, the main component including an insulating shell and a shielding cylinder; the shielding cylinder is fixedly connected to the inner side wall of the insulating shell, and thermally conductive filler is filled between the insulating shell and the shielding cylinder;

[0006] The main body component has heat dissipation components at both ends. The heat dissipation components include a stationary cover plate, heat dissipation fins, micro heat pipes, through slots, a movable cover plate, and through holes. The top of the insulating shell is fixedly connected to a stationary cover plate, which has an internal hollow structure. Heat dissipation fins are uniformly fixedly connected to the inner sidewall of the stationary cover plate. Micro heat pipes are uniformly fixedly connected to the outer sidewall of the shielding cylinder. One end of the micro heat pipe extends through the outer sidewall of the stationary cover plate and into the interior. The heat dissipation fins are uniformly fixedly connected to the outer sidewall of the micro heat pipe. Through slots are uniformly opened on the outer sidewall of the stationary cover plate. The bottom of the insulating shell is fixedly connected to a movable cover plate, and through holes are uniformly opened at the bottom of the movable cover plate. The thermally conductive filler is made of aluminum nitride material to increase the thermal conductivity, thereby improving the heat exchange efficiency of the micro heat pipe.

[0007] A further preferred embodiment: a stationary conductive block is fixedly connected to the inner side wall of the stationary cover plate.

[0008] A further preferred embodiment: a stationary conductive rod is installed at the bottom of the stationary conductive block.

[0009] A further preferred embodiment: a stationary contact is installed at the bottom end of the stationary conductive rod.

[0010] A further preferred embodiment: a moving contact is provided below the stationary contact.

[0011] A further preferred embodiment: a moving end conductive rod is installed at the bottom of the moving contact.

[0012] A further preferred embodiment: the outer wall of the moving end conductive rod is provided with a corrugated tube, and a shield is fixedly connected to the outer wall of the corrugated tube.

[0013] A further preferred embodiment: a guide sleeve is fixedly connected to the inner wall of the movable cover plate, and the movable end conductive rod is slidably connected to the inner wall of the guide sleeve.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] I. This utility model, by installing multiple sets of micro heat pipes on the outside of the shielding cylinder and improving the heat exchange efficiency of the micro heat pipes through thermally conductive filler, can quickly transfer the heat inside the arc extinguishing chamber to the external environment, thus preventing the local temperature inside the arc extinguishing chamber from becoming too high.

[0016] Second, this utility model provides a through hole at the bottom of the movable cover plate to facilitate the exchange of air between the inside and outside when the moving end conductive rod moves, thereby improving the heat dissipation effect.

[0017] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of the present invention;

[0020] Figure 2 This is a bottom view of the structure of this utility model;

[0021] Figure 3 This is a diagram showing the internal structure of the insulating shell of this utility model;

[0022] Figure 4 This is a structural diagram of the internal structure of the shielding cylinder of this utility model.

[0023] Reference numerals: 10. Main component; 11. Insulating shell; 12. Shielding cylinder; 13. Stationary conductive block; 14. Stationary conductive rod; 15. Stationary contact; 16. Moving contact; 17. Shielding cover; 18. Bellows; 19. Moving conductive rod; 110. Guide sleeve; 20. Heat dissipation assembly; 21. Stationary cover plate; 22. Heat dissipation fins; 23. Miniature heat pipe; 24. Through slot; 25. Moving cover plate; 26. Through hole. Detailed Implementation

[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0025] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] like Figures 1-4 As shown, this utility model embodiment provides a heat dissipation structure for an arc-extinguishing chamber, including a main component 10, which includes an insulating shell 11 and a shielding cylinder 12; the shielding cylinder 12 is fixedly connected to the inner side wall of the insulating shell 11, and thermally conductive filler is filled between the insulating shell 11 and the shielding cylinder 12.

[0027] The main body component 10 has heat dissipation components 20 at both ends. Each heat dissipation component 20 includes a stationary cover plate 21, heat dissipation fins 22, micro heat pipes 23, through slots 24, a movable cover plate 25, and through holes 26. A stationary cover plate 21 is fixedly connected to the top of the insulating shell 11. The stationary cover plate 21 has an internally hollow structure. Heat dissipation fins 22 are uniformly fixedly connected to the inner sidewall of the stationary cover plate 21. Micro heat pipes 23 are uniformly fixedly connected to the outer sidewall of the shielding cylinder 12. One end of each micro heat pipe 23 extends through the outer sidewall of the stationary cover plate 21 into the interior. The heat dissipation fins 22 are uniformly fixedly connected to the outer sidewall of the micro heat pipes 23. Through slots 24 are uniformly formed on the outer sidewall of the stationary cover plate 21. A movable cover plate 25 is fixedly connected to the bottom of the 11. The bottom of the movable cover plate 25 is evenly provided with through holes 26. After the movable contact 16 and the stationary contact 15 are separated, the arc energy causes the temperature around the contact to rise sharply. By installing multiple sets of micro heat pipes 23 outside the shielding cylinder 12, and improving the heat exchange efficiency of the micro heat pipes 23 through thermally conductive filler, the heat inside the arc extinguishing chamber is quickly transferred to the other end of the micro heat pipes 23. The heat dissipation fins 22 are used to increase the heat dissipation area, so that the heat can be dissipated to the external environment through the through slot 24, preventing the local temperature inside the arc extinguishing chamber from being too high. The thermally conductive filler is filled with aluminum nitride material to increase the thermal conductivity, thereby improving the heat exchange efficiency of the micro heat pipes 23.

[0028] In this embodiment, specifically: a stationary end conductive block 13 is fixedly connected to the inner side wall of the stationary cover plate 21, and the stationary end conductive block 13, the stationary end conductive rod 14 and the stationary contact 15 form a complete stationary end circuit.

[0029] In this embodiment, specifically: a stationary end conductive rod 14 is installed at the bottom of the stationary end conductive block 13.

[0030] In this embodiment, specifically: a stationary contact 15 is installed at the bottom end of the stationary conductive rod 14.

[0031] In this embodiment, specifically: a moving contact 16 is provided below the stationary contact 15. During the separation process of the moving contact 16 and the stationary contact 15, the arc energy causes the temperature around the contact to rise.

[0032] In this embodiment, specifically: a moving end conductive rod 19 is installed at the bottom of the moving contact 16, and the moving end conductive rod 19 moves to drive the moving contact 16 to move.

[0033] In this embodiment, specifically: a bellows 18 is provided on the outer wall of the moving end conductive rod 19, and a shield 17 is fixedly connected to the outer wall of the bellows 18. The bellows 18 can adapt to the movement of the moving contact 16 and extend and contract with the movement of the moving contact 16. The shield 17 protects the inner bellows 18.

[0034] In this embodiment, specifically: a guide sleeve 110 is fixedly connected to the inner side wall of the movable cover plate 25, and the movable end conductive rod 19 is slidably connected to the inner side wall of the guide sleeve 110. The movable end conductive rod 19 slides along the inner side wall of the guide sleeve 110, driving the movable contact 16 to move, thereby realizing the separation of the movable contact 16 and the stationary contact 15.

[0035] In operation, after the moving contact 16 and the stationary contact 15 separate, the arc energy causes the temperature around the contact to rise sharply. By installing multiple sets of micro heat pipes 23 outside the shielding cylinder 12 and improving the heat exchange efficiency of the micro heat pipes 23 through thermally conductive filler, the heat inside the arc-extinguishing chamber is quickly transferred to the other end of the micro heat pipes 23. The heat dissipation fins 22 are used to increase the heat dissipation area, allowing the heat to be dissipated to the external environment through the through slot 24, preventing the local temperature inside the arc-extinguishing chamber from becoming too high. By opening a through hole 26 at the bottom of the moving cover plate 25, the internal and external air can be exchanged when the moving end conductive rod 19 moves, which helps to improve the heat dissipation effect.

[0036] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A heat dissipation structure for an arc-extinguishing chamber, comprising a main component (10), characterized in that: The main component (10) includes an insulating shell (11) and a shielding cylinder (12); the shielding cylinder (12) is fixedly connected to the inner wall of the insulating shell (11), and thermally conductive filler is filled between the insulating shell (11) and the shielding cylinder (12). The main body component (10) has heat dissipation components (20) at both ends. The heat dissipation components (20) include a stationary cover plate (21), heat dissipation fins (22), a micro heat pipe (23), a through slot (24), a movable cover plate (25), and a through hole (26). The top of the insulating shell (11) is fixedly connected to the stationary cover plate (21). The stationary cover plate (21) has an internal hollow structure. The inner sidewall of the stationary cover plate (21) is uniformly fixedly connected to the heat dissipation fins (22). The shielding A micro heat pipe (23) is uniformly fixedly connected to the outer wall of the cylinder (12). One end of the micro heat pipe (23) extends through the outer wall of the stationary cover plate (21) into the interior. The heat dissipation fins (22) are uniformly fixedly connected to the outer wall of the micro heat pipe (23). The outer wall of the stationary cover plate (21) is uniformly provided with through grooves (24). The bottom end of the insulating shell (11) is fixedly connected with a movable cover plate (25). The bottom of the movable cover plate (25) is uniformly provided with through holes (26).

2. The heat dissipation structure of the arc-extinguishing chamber according to claim 1, characterized in that: The inner wall of the static cover plate (21) is fixedly connected to a static end conductive block (13).

3. The heat dissipation structure of the arc-extinguishing chamber according to claim 2, characterized in that: The bottom of the stationary end conductive block (13) is equipped with a stationary end conductive rod (14).

4. The heat dissipation structure of the arc-extinguishing chamber according to claim 3, characterized in that: A stationary contact (15) is installed at the bottom end of the stationary conductive rod (14).

5. The heat dissipation structure of the arc-extinguishing chamber according to claim 4, characterized in that: A moving contact (16) is provided below the stationary contact (15).

6. The heat dissipation structure of the arc-extinguishing chamber according to claim 5, characterized in that: The bottom of the moving contact (16) is equipped with a moving end conductive rod (19).

7. The heat dissipation structure of the arc-extinguishing chamber according to claim 6, characterized in that: The outer wall of the moving end conductive rod (19) is provided with a bellows (18), and a shield (17) is fixedly connected to the outer wall of the bellows (18).

8. The heat dissipation structure of the arc-extinguishing chamber according to claim 6, characterized in that: The inner wall of the movable cover plate (25) is fixedly connected to a guide sleeve (110), and the movable end conductive rod (19) is slidably connected to the inner wall of the guide sleeve (110).

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