Heat dissipation device for environment-friendly gas-insulated high-current switch equipment

Abstract

The utility model relates to the field of heat dissipation of gas-insulated switchgears, and discloses an environment-friendly gas-insulated high-current switchgear heat dissipation device, which comprises heat-conducting ceramic, a corrugated pipe, a heat dissipation sheet, a gas tank main body and a three-station contact which are mutually combined to play a role, and only the heat-conducting ceramic, the corrugated pipe and the heat dissipation sheet are combined with the gas tank main body and the three-station contact, so that the heat-conducting ceramic, the corrugated pipe and the heat dissipation sheet are combined with the gas tank main body and the three-station contact. The heat dissipation work under the full-sealing condition of the inflatable cabinet can be achieved, heat is transmitted to the inner surface of the box wall of the gas box body through the heat conduction ceramic and the corrugated pipe, then the heat extends to the outer surface of the box wall of the gas box body again and is finally dissipated through the cooling fins, the original structure of the inflatable cabinet is not damaged in the whole heat dissipation process, and the heat dissipation efficiency is improved. The gas-insulated switchgear has the advantages that the gas-insulated switchgear cannot influence the full-sealing performance of the gas-insulated switchgear, the concentrated conduction end can conduct the heat from the heat absorption covering end in a concentrated manner, the heat cannot be excessively dissipated to the outside due to an overlarge area, and the large area of the heat absorption covering end can transfer more heat on the three-station contact.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of air -filled cabinet heat dissipation, concretely to an environmental protection gas insulation high -current switch equipment heat dissipation device. BACKGROUND

[0002] 2500A above high -current gas insulation switch cabinet (abbreviation air -filled cabinet) more and more be applied to the power grid project, the main performance index of high -current switch equipment, the temperature rise requirement is higher, the original heat dissipation frame device in air -filled cabinet, through the heat conduction principle of internal gas convection, the heat in the contact is transmitted to the mode of heat dissipation frame outside, this heat dissipation mode, on the one hand, the poor heat conduction efficiency, and the manufacturing cost of heat dissipation frame is high, increases the overall weight of cabinet and installation workload.

[0003] Such as the Chinese patent with the publication number CN114974943A discloses a high -current switch cabinet contact heat dissipation device, and the moving contact and the static contact are connected through the plum blossom contact, the plum blossom contact is fastened through the spring outside, the static contact is nested with the ceramic sleeve ring, the ceramic sleeve ring is nested with the heat pipe sleeve ring and is fastened through the bolt, the flat plate heat pipe is nested with the heat pipe sleeve ring, two rectangular holes are formed in the top of the contact box, the big rectangular hole passes through the busbar, and the small rectangular hole passes through the flat plate heat pipe, and the fin is sleeved on the surface of the flat plate heat pipe. The application exports heat from the inside of the contact box and cools through the fan, the flat plate heat pipe exports the joule heat generated by the contact system from the inside of the contact box to the outside space, the fin is laid on the surface of the heat pipe to increase the heat dissipation area, and the forced convection of the fan improves the heat dissipation performance of the switch cabinet.

[0004] Such as the Chinese patent with the publication number CN204905743U discloses a self-cooling high-voltage alternating current metal-enclosed switchgear, the cabinet body is divided into four separate compartments: the circuit breaker chamber, the main bus chamber, the cable chamber and the instrument chamber. A top heat pipe radiator is installed on the pressure relief channel cover plate at the top of the circuit breaker; a circuit breaker heat pipe radiator is installed on the static conducting rod of the circuit breaker; a partition heat pipe radiator is welded on the partition plate between the front and rear cabinets, i.e. the partition plate between the circuit breaker chamber and the main bus chamber; a contact box mounting plate heat pipe radiator is welded on the contact box mounting plate; a contact arm heat pipe radiator is installed on the contact arm of the circuit breaker; and a static contact busbar radiator is installed on the busbar leading out of the static contact. The utility model utilizes the high-efficiency heat conduction performance of the heat pipe to rapidly conduct the heat generated by the contact of the moving and static contacts in the high-current vacuum arc chamber to the air, so that the temperature rise value is controlled within the range specified by the national standard.

[0005] For example, the Chinese patent with publication number CN212517026U discloses an arc-extinguishing chamber with a heat dissipation structure, which includes an arc-extinguishing chamber body and a heat dissipation mechanism located outside the arc-extinguishing chamber body. The heat dissipation mechanism is detachably fixed outside the arc-extinguishing chamber body. The arc-extinguishing chamber body includes a ceramic tube, a static conducting rod, a shielding cylinder, a contact seat, a moving contact, a static contact, a corrugated tube, and a moving conducting rod. The inside of the ceramic tube is provided with the shielding cylinder, and the inside of the shielding cylinder is provided with the moving contact and the static contact. The static contact is located above the moving contact. In the utility model, the detachable heat dissipation mechanism is arranged outside the arc-extinguishing chamber body. The heat dissipation mechanism is detachably fixed outside the arc-extinguishing chamber body through the upper arc-shaped heat dissipation plate, the lower arc-shaped heat dissipation plate, and the bolts. When the arc-extinguishing chamber body or the heat dissipation mechanism is damaged, only partial replacement is needed for reuse, recycling, and cost reduction. The installation and disassembly are convenient and time-saving and labor-saving.

[0006] In summary, the existing three-station contact heat dissipation of the gas-filled cabinet has many drawbacks, which are summarized as follows:

[0007] ①The heat conduction efficiency of the traditional heat dissipation frame is poor, and the manufacturing cost of the heat dissipation frame is high, which increases the overall weight of the cabinet and the installation workload;

[0008] ②Since the gas-filled cabinet is filled with environmentally friendly gas, the whole should meet the requirement of full sealing. The structure in the above-mentioned patent literature cannot be directly applied for heat dissipation in the gas-filled cabinet;

[0009] ③And how to efficiently dissipate the internal heat in the closed space of the gas-filled cabinet has not been solved by a suitable solution. Utility model content

[0010] In view of the deficiencies of the prior art, the utility model provides an environmentally friendly gas insulated high-current switch device heat dissipation device to solve the above problems.

[0011] To achieve the above purpose, the utility model realizes the following technical solutions.

[0012] The utility model provides a kind of environmental protection gas insulation high current switching device heat sink, including heat-conducting ceramic, bellows, fin, gas tank main body, three-station contact, the heat-conducting ceramic connects bellows one side, bellows other side is connected in the inner surface of the tank wall of gas tank main body, the fin is distributed on the outer surface of the tank wall of gas tank main body, the three-station contact is attached to the heat-conducting ceramic connection, only using heat-conducting ceramic, bellows, fin three with gas tank main body, three-station contact combination, can realize the heat dissipation work under the full sealing condition of gas-filled cabinet, compared with traditional heat dissipation frame, manufacturing cost is low, and it will not increase the weight and installation workload of overall too much, heat is transferred to the inner surface of the tank wall of gas tank main body by heat-conducting ceramic and bellows, then heat is extended to the outer surface of the tank wall of gas tank main body again, finally, it is dissipated by fin, the whole heat dissipation process does not destroy the original structure of gas-filled cabinet, and will not affect the full sealing performance of gas-filled cabinet.

[0013] Preferably, the heat-conducting ceramic includes concentrated conduction end and heat-absorbing cover end.

[0014] Preferably, the cross section of the concentrated conduction end is strip-shaped, and one end is connected with the bellows, and the other end coincides with the heat-absorbing cover end.

[0015] Preferably, the cross section of the heat-absorbing cover end is square, and the area of the cross section of the heat-absorbing cover end is greater than the area of the cross section of the concentrated conduction end, and the concentrated conduction end and the heat-absorbing cover end are different in shape, which has the advantages that the concentrated conduction end can concentrate and conduct the heat from the heat-absorbing cover end, so that the heat is not excessively dissipated to the outside, and the large area of the heat-absorbing cover end can transfer more heat from the three-station contact.

[0016] Preferably, the bellows is copper bellows, and copper has a very high thermal conductivity, so that when heat is transferred to the copper bellows, the copper bellows can rapidly conduct the heat to the whole bellows, thereby achieving high-efficiency heat dissipation.

[0017] Preferably, the gas tank main body is of a full-sealing structure.

[0018] Compared with the prior art, the utility model discloses a kind of environmental protection gas insulation high current switching device heat sink, including heat-conducting ceramic, bellows, fin, gas tank main body, three-station contact, five mutual combination uses play a role,

[0019] ①Only using heat-conducting ceramic, bellows, fin three with gas tank main body, three-station contact combination, can realize the heat dissipation work under the full sealing condition of gas-filled cabinet, compared with traditional heat dissipation frame, manufacturing cost is low, and it will not increase the weight and installation workload of overall too much;

[0020] ② The heat is transferred to the inner surface of the gas box body through the thermally conductive ceramic and the corrugated pipe, and then the heat is extended to the outer surface of the gas box body. Finally, it is dissipated through the heat sink. The whole heat dissipation process does not damage the original structure of the gas cabinet and does not affect the full sealing performance of the gas cabinet.

[0021] ③ The advantage of the different shapes of the concentrated conduction end and the heat absorption covering end is that the concentrated conduction end can concentrate the heat from the heat absorption covering end, so as not to dissipate too much heat to the outside due to the large area, while the large area of ​​the heat absorption covering end can transfer more heat from the three-position contacts.

[0022] ④ The bellows is made of copper. Copper itself has an extremely high thermal conductivity. When heat is transferred to the copper bellows, it can quickly conduct the heat to the entire bellows, thereby achieving efficient heat dissipation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the heat dissipation device for environmentally friendly gas-insulated high-current switchgear of this utility model;

[0024] Figure 2 This is a schematic diagram illustrating the application of the heat dissipation device for environmentally friendly gas-insulated high-current switchgear of this utility model. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] A heat dissipation device for an environmentally friendly gas-insulated high-current switchgear includes a thermally conductive ceramic 1, a corrugated pipe 2, heat sinks 3, a gas box body 4, and three-position contacts 5. The thermally conductive ceramic 1 is connected to one side of the corrugated pipe 2, and the other side of the corrugated pipe 2 is connected to the inner surface of the gas box body 4. The heat sinks 3 are distributed on the outer surface of the gas box body 4. The three-position contacts 5 are in close contact with the thermally conductive ceramic 1.

[0027] The thermally conductive ceramic 1 includes a concentrated conduction end 11 and a heat-absorbing covering end 12. The cross-section of the concentrated conduction end 11 is elongated, with one end connected to the corrugated pipe 2 and the other end overlapping with the heat-absorbing covering end 12. The cross-section of the heat-absorbing covering end 12 is square, and the area of ​​the cross-section of the heat-absorbing covering end 12 is larger than the area of ​​the cross-section of the concentrated conduction end 11. The advantage of the different shapes of the concentrated conduction end 11 and the heat-absorbing covering end 12 is that the concentrated conduction end 11 can concentrate the heat from the heat-absorbing covering end 12, so as not to dissipate too much heat to the outside due to its large area. The large area of ​​the heat-absorbing covering end 12 can transfer more heat from the three-position contact 5.

[0028] The corrugated pipe 2 is a copper corrugated pipe. Copper itself has an extremely high thermal conductivity. When heat is transferred to the copper corrugated pipe, it can quickly conduct the heat to the entire corrugated pipe 2, thereby achieving efficient heat dissipation. The corrugated structure significantly increases the surface area. Compared with a bare pipe, its surface area is larger, which means a wider contact area with the gas, thus enabling more effective heat transfer.

[0029] The main body 4 of the gas box is a fully sealed structure and is a gas-filled cabinet filled with SF6 gas (or other insulating gas) for insulation and arc extinguishing.

[0030] Heat dissipation process: The heat-absorbing cover end 12 absorbs the heat from the three-position contact 5 and transfers it to the bellows 2 through the centralized conduction end 11. Then, the heat is transferred to the inner surface of the gas box body 4 through the bellows 2, and then the heat is extended to the outer surface of the gas box body 4. Finally, it is dissipated through the heat sink 3. The entire heat dissipation process does not damage the original structure of the gas cabinet and does not affect the full sealing performance of the gas cabinet.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An environmentally friendly gas-insulated high-current switchgear heat sink device, characterized by: It comprises heat-conducting ceramic (1), corrugated pipe (2), radiating fin (3), air tank body (4), three-position contact (5), the heat-conducting ceramic (1) is connected with one side of the corrugated pipe (2), the other side of the corrugated pipe (2) is connected with the inner surface of the tank wall of the air tank body (4), the radiating fin (3) is distributed on the outer surface of the tank wall of the air tank body (4), and the three-position contact (5) is connected with the heat-conducting ceramic (1).

2. The environmentally friendly gas insulated high current switchgear heat sink device of claim 1, wherein: The heat-conducting ceramic (1) comprises concentrated conduction end (11) and heat-absorbing covering end (12).

3. The environmentally friendly gas insulated high current switchgear heat sink device of claim 2, wherein: The cross section of the concentrated conduction end (11) is long strip-shaped, one end of which is connected with the corrugated pipe (2) and the other end coincides with the heat-absorbing covering end (12).

4. The environmentally friendly gas insulated high current switchgear heat sink device of claim 3, wherein: The cross section of the heat-absorbing covering end (12) is square-shaped, and the area of the cross section of the heat-absorbing covering end (12) is larger than that of the concentrated conduction end (11).

5. The environmentally friendly gas insulated high current switchgear heat sink device of claim 1, wherein: The corrugated pipe (2) is copper corrugated pipe.

6. The environmentally friendly gas insulated high current switchgear heat sink device of claim 1, wherein: The air tank body (4) is full-sealed structure.

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