Conductor contact heat dissipation structure for high voltage switchgear

Abstract

This invention provides a heat dissipation structure for the conductor contacts of a high-voltage switchgear, comprising a gas tank body, three spaced-apart disconnector assemblies connected within the gas tank body, and three spaced-apart conductors connected within the gas tank body. The lower ends of the three conductors form contact ends and are respectively fixed to a conductive base in one of the disconnector assemblies. A current transformer is fitted and fixed to each conductor, and heat dissipation fins are fixed to the outer wall of the lower end of each conductor. A first fan is fixed to each heat dissipation fin, and each first fan is electrically connected to the current transformer on the corresponding conductor. This invention effectively dissipates heat from the contact ends of the conductors to the contact points of the conductive bases in the disconnector assemblies, thereby effectively preventing oxidation of the contact ends of the conductors, ensuring the normal operation of the high-voltage switchgear, and extending the service life of the high-voltage switchgear.

Description

Technical Field

[0001] This utility model relates to the field of high voltage switchgear technology, and more specifically, to a heat dissipation structure for conductor contacts of high voltage switchgear. Background Technology

[0002] Within enclosed spaces, high-current components are the primary heat sources. For example, inside the gas chamber of high-voltage switchgear, the contact points between the conductor's contact end and the conductive base in the disconnector assembly are concentrated heat-generating areas. In current high-voltage switchgear structures, heat dissipation at these points relies on the diffusion of gas molecules within the sealed space, transferring heat to the gas chamber. However, this method suffers from low heat dissipation efficiency, easily leading to poor heat dissipation at the contact points between the conductor's contact end and the conductive base in the disconnector assembly. This results in rapid oxidation of the conductor's contact end, affecting the normal operation and lifespan of the high-voltage switchgear.

[0003] Therefore, in the existing high-voltage switchgear structure, a fan is added to the outer wall of the gas tank, and the fan is driven by an external power source. However, since the heat conduction between the gas tank and the contact end of the conductor relies on the gas inside the gas tank, there is a disadvantage of low heat conduction efficiency between the gas tank and the contact end of the conductor. Even if a fan is added to the outer wall of the gas tank, the heat dissipation effect is still poor for the contact end of the conductor. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a heat dissipation structure for the conductor contact of a high-voltage switchgear, which can effectively dissipate heat at the contact point between the contact end of the conductor and the contact point of the conductive base in the disconnector assembly, thereby effectively preventing oxidation of the contact end of the conductor, ensuring the normal operation of the high-voltage switchgear, and extending the service life of the high-voltage switchgear.

[0005] This utility model provides a heat dissipation structure for conductor contacts of a high-voltage switchgear, including a gas tank body, three spaced-apart disconnector assemblies connected in the gas tank body, and three spaced-apart conductors connected in the gas tank body; the lower ends of the three conductors form contact ends and are respectively fixed to a conductive base in one of the disconnector assemblies; a current transformer is sleeved and fixed on each conductor, and heat dissipation fins are fixed on the outer side wall of the lower end of each conductor, a first fan is fixed on each heat dissipation fin, and each first fan is electrically connected to the current transformer on the corresponding conductor.

[0006] By adopting the above-described structure, when current flows through the conductor, an induced current is generated in the current transformer fixed to the conductor. At this time, each current transformer drives its corresponding first fan. The first fan accelerates the flow of the gas medium within the gas box, thereby reliably dissipating heat from the contact points between the conductor's contact end and the conductive base in the disconnector assembly through the heat dissipation fins. Furthermore, the accelerated flow of the gas medium inside the gas box reliably exchanges heat with the gas box body, effectively achieving heat dissipation from the contact points between the conductor's contact end and the conductive base in the disconnector assembly. This effectively prevents oxidation of the contact ends of the conductors, ensuring the normal operation of the high-voltage switchgear and extending its service life. Furthermore, in this structure, each first fan is powered by a corresponding current transformer, eliminating the need for an external power source. This prevents external power lines from being introduced into the gas tank, thus avoiding damage to its airtightness and insulation. Additionally, each first fan is powered by a current transformer fitted and fixed to its corresponding conductor, preventing damage to the insulation between conductors and ensuring stable operation of the high-voltage switchgear.

[0007] In one possible implementation, each heat sink fin partially surrounds the conductor along the circumferential direction of the corresponding conductor. By adopting this structure, the contact area between the heat sink fin and the conductor can be increased, so that when the first fan dissipates heat from the heat sink fin, the heat sink fin can more easily absorb heat from the contact end of the conductor, thereby further achieving reliable heat dissipation from the contact end of the conductor and further avoiding oxidation of the contact end of the conductor.

[0008] In one possible implementation, a second fan is fixed on the outer top of each disconnector assembly, and each second fan is electrically connected to a current transformer on the corresponding conductor. With the second fan, each second fan can dissipate heat from the disconnector assembly at the corresponding position when it is running. In this embodiment, each second fan is located above the vacuum interrupter in the corresponding disconnector assembly, thereby enabling reliable heat dissipation from the vacuum interrupter.

[0009] In one possible implementation, a third fan corresponding to each conductor is fixed on the inner wall of the gas box body. Each third fan is spaced apart from the inner wall of the gas box body and is electrically connected to the current transformer on the corresponding conductor. With the arrangement of the third fans, each third fan can dissipate heat from the corresponding conductor when it is running, and can promote the flow of insulating gas inside the gas box body, thereby increasing the heat exchange rate between the insulating gas and the gas box body, so that the insulating gas inside the gas box body can be reliably dissipated.

[0010] In one possible implementation, each third fan is fixed to the inner wall of the air box body by an L-shaped bracket; with this structure, each third fan can be reliably fixed to the inner wall of the air box body. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a three-dimensional structural diagram of the present invention after part of the gas box body has been removed. Detailed Implementation

[0013] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0014] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0015] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0016] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] See Figure 1-2 As shown in the figure, this application discloses a conductor contact heat dissipation structure for a high-voltage switchgear, including a gas tank body 1, three spaced-apart disconnector switch assemblies 2 connected in the gas tank body 1, and three spaced-apart conductors 3 connected in the gas tank body 1; the lower ends of the three conductors 3 form contact ends and are respectively fixed to the conductive base in one of the disconnector switch assemblies 2; a current transformer 4 is sleeved and fixed on each conductor 3, and heat dissipation fins 5 are fixed on the outer side wall of the lower end of each conductor 3; a first fan 6 is fixed on each heat dissipation fin 5, and each first fan 6 is electrically connected to the current transformer 4 on the corresponding conductor 3.

[0018] Each heat dissipation fin 5 partially surrounds the corresponding conductor 3 along the circumferential direction. By adopting this structure, the contact area between the heat dissipation fin and the conductor can be increased. Thus, when the first fan dissipates heat from the heat dissipation fin, the heat dissipation fin can more easily absorb heat from the contact end of the conductor, thereby further achieving reliable heat dissipation from the contact end of the conductor and further avoiding oxidation of the contact end of the conductor.

[0019] Each disconnector switch assembly 2 is fixed with a second fan 7 on its outer top, and each second fan 7 is electrically connected to the current transformer 4 on the corresponding conductor 3. With the setting of the second fan, each second fan can dissipate heat from the disconnector switch assembly at the corresponding position when it is running. In this embodiment, each second fan is located above the vacuum interrupter in the corresponding disconnector switch assembly, thereby achieving reliable heat dissipation from the vacuum interrupter.

[0020] A third fan 8, corresponding to each conductor 3, is fixed on the inner wall of the gas box body 1. Each third fan 8 is spaced apart from the inner wall of the gas box body 1 and is electrically connected to the current transformer 4 on the corresponding conductor 3. With the setting of the third fan, each third fan can dissipate heat on the corresponding conductor when it is running, and can promote the flow of insulating gas in the gas box body, thereby improving the heat exchange rate between the insulating gas and the gas box body, so that the insulating gas inside the gas box body can be reliably dissipated.

[0021] Each third fan 8 is fixed to the inner wall of the air box body 1 by a bracket 9 with an "L" shaped cross section; with this structure, each third fan can be reliably fixed to the inner wall of the air box body.

[0022] Each of the aforementioned current transformers can supply power to the corresponding first fan, second fan, and third fan.

[0023] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A conductor contact heat dissipation structure for a high-voltage switchgear, comprising a gas tank body (1), three spaced-apart disconnector assemblies (2) connected in the gas tank body (1), and three spaced-apart conductors (3) connected in the gas tank body (1); the lower ends of the three conductors (3) form contact ends and are respectively fixed to a conductive base in one of the disconnector assemblies (2); characterized in that: Each conductor (3) is fitted with a current transformer (4), and each conductor (3) has a heat sink fin (5) fixed on the outer side wall at the lower end. Each heat sink fin (5) has a first fan (6) fixed on it, and each first fan (6) is electrically connected to the current transformer (4) on the corresponding conductor (3).

2. The conductor contact heat sink structure for high voltage switchgear according to claim 1, characterized in that: Each of the heat dissipation fins (5) partially surrounds the corresponding conductor (3) in the circumferential direction.

3. The conductor contact heat sink structure for a high voltage switching device according to claim 1 or 2, characterized by: Each of the disconnector switch assemblies (2) has a second fan (7) fixed on its outer top, and each second fan (7) is electrically connected to a current transformer (4) on the corresponding conductor (3).

4. The conductor contact heat sink structure for high voltage switchgear according to claim 3, characterized in that: The inner wall of the gas box body (1) is fixed with a third fan (8) corresponding to each of the conductors (3). Each third fan (8) is spaced apart from the inner wall of the gas box body (1). Each third fan (8) is electrically connected to the current transformer (4) on the corresponding conductor (3).

5. The heat dissipation structure for conductor contacts of high-voltage switchgear according to claim 4, characterized in that: Each of the third fans (8) is fixed to the inner wall of the air box body (1) by a bracket (9) with an "L" shaped cross section.

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