Dry-type capacitor resistant to high-temperature environment

Abstract

The high-temperature-environment-resistant dry-type capacitor comprises a shell, wiring terminals arranged at two ends of the top of the shell, mounting lug plates arranged at two sides of the bottom of the shell in a welding manner, mounting ports arranged at two ends of the outer side of the surface of each mounting lug plate, an inner cavity arranged inside the shell, and a partition plate arranged at the inner cavity of the shell, a partition plate is arranged in the shell and divides an inner cavity of the shell into a cooling liquid inner cavity and a capacitor storage inner cavity, the cooling liquid inner cavity is located on the outer surface of the capacitor storage inner cavity, a capacitor body is arranged in the capacitor storage inner cavity, cooling liquid is arranged in the cooling liquid inner cavity, and the partition plate is arranged in the shell. The partition plate divides the inner cavity of the shell into the cooling liquid inner cavity and the capacitor storage inner cavity, the capacitor body is located in the capacitor storage inner cavity, cooling liquid enters the cooling liquid inner cavity through the liquid inlet, and the cooling liquid absorbs heat in a high-temperature environment to perform heat exchange, so that the heat is completely dissipated in the high-temperature environment, and the service life of the capacitor is prolonged. Therefore, the high-temperature resistance of the dry-type capacitor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dry capacitors, in particular to a dry capacitor resistant to high temperature environments. Background Art

[0002] Two conductors close to each other, with a non-conductive insulating medium in between, form a capacitor. When a voltage is applied between the two plates of a capacitor, the capacitor will store charge. The capacitance of a capacitor is numerically equal to the ratio of the charge on one conductive plate to the voltage between the two plates. The basic unit of the capacitance of a capacitor is farad (F). In circuit diagrams, the letter C is usually used to represent a capacitor element.

[0003] Capacitors play an important role in tuning, bypassing, coupling, filtering and other circuits. They are used in the tuning circuit of transistor radios, as well as in the coupling circuit and bypass circuit of color TVs.

[0004] Dry capacitors are a type of capacitors. They are suitable for use in power frequency AC power systems with nominal voltages of 1000V and below to increase power factor, reduce line reactive power loss, and improve voltage quality. Currently, dry power capacitors are mostly filled with soft resin, silicone oil, and black glue.

[0005] However, the dry capacitors in the prior art are not able to withstand high temperatures, and when the temperature is too high, the internal components of the dry capacitors are easily damaged. Utility Model Content

[0006] The purpose of the utility model is to provide a dry capacitor resistant to high temperature environments to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dry-type capacitor resistant to high temperature environment, comprising a shell, the top two ends of the shell are provided with wiring terminals, the bottom two sides of the shell are provided with mounting ear plates by welding, the outer sides of the surface of the mounting ear plates are provided with mounting openings, the interior of the shell is provided with an inner cavity, the inner cavity of the shell is provided with a partition, the partition divides the inner cavity of the shell into a coolant cavity and a capacitor storage cavity, the coolant cavity is located on the outer surface of the capacitor storage cavity, the capacitor storage cavity is provided with a capacitor body, and the coolant is provided at the coolant cavity.

[0008] Preferably, liquid inlets are provided at both ends of the top of the cooling liquid inner cavity, and threads are provided on the surface of the liquid inlet, and the surface of the liquid inlet is connected to the sealing cover by means of threads.

[0009] Preferably, the partition is divided into a heat conducting plate and a high temperature resistant plate, the top and bottom of the heat conducting plate are provided with high temperature resistant plates, the surface of the high temperature resistant plate is provided with a plurality of heat dissipation ports, and the bottom of the heat dissipation ports is located at the heat conducting plate.

[0010] Preferably, the material of the shell is the same as that of the partition.

[0011] Preferably, a plurality of through holes are provided on the surface of the liquid inlet, and a dustproof net is provided at the through holes.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model discloses a dry capacitor resistant to high temperature environment. A partition is arranged inside a shell. The partition divides the inner cavity of the shell into a coolant inner cavity and a capacitor storage inner cavity. The capacitor body will be located in the capacitor storage inner cavity. The coolant will enter the coolant inner cavity through a liquid inlet. The coolant will absorb heat in a high temperature environment, thereby performing heat exchange, so that the heat can be completely dissipated in the high temperature environment, thereby improving the high temperature resistance of the dry capacitor.

[0014] The utility model discloses a dry capacitor resistant to high temperature environment. A plurality of through holes are arranged on the surface of the liquid inlet. A dustproof net is arranged at the through holes. When in a high temperature environment for a long time, the temperature of the coolant may rise. By arranging a plurality of through holes, the heat absorbed by the coolant is dissipated again, thereby further improving the high temperature resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is an overall cross-sectional view of the utility model;

[0017] Figure 3 It is a cross-sectional view of the partition of the utility model.

[0018] In the figure: 1. Shell; 2. Wiring terminal; 3. Sealing cover; 4. Mounting ear plate; 5. Mounting port; 6. Cooling liquid cavity; 7. Capacitor body; 8. Liquid inlet; 9. Partition; 901. Heat conducting plate; 902. High temperature resistant plate; 903. Heat dissipation port; 10. Capacitor storage cavity. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1-3 The utility model provides a technical solution: a dry-type capacitor resistant to high temperature environment, including a shell 1, two ends of the top of the shell 1 are provided with wiring terminals 2, two sides of the bottom of the shell 1 are provided with mounting ear plates 4 by welding, and two ends of the outer surface of the mounting ear plates 4 are provided with mounting openings 5, an inner cavity is provided inside the shell 1, a partition 9 is provided at the inner cavity of the shell 1, and the partition 9 divides the inner cavity of the shell 1 into a coolant inner cavity 6 and a capacitor storage inner cavity 10, the coolant inner cavity 6 is located on the outer surface of the capacitor storage inner cavity 10, a capacitor body 7 is provided at the capacitor storage inner cavity 10, and a coolant is provided at the coolant inner cavity 6.

[0023] Furthermore, liquid inlets 8 are provided at both ends of the top of the cooling liquid inner cavity 6 , and threads are provided on the surface of the liquid inlet 8 , and the surface of the liquid inlet 8 is connected to the sealing cover 3 by threads.

[0024] Furthermore, the partition 9 is divided into a heat conducting plate 901 and a high temperature resistant plate 902 . The high temperature resistant plate 902 is provided at the top and bottom of the heat conducting plate 901 . A plurality of heat dissipation ports 903 are provided on the surface of the high temperature resistant plate 902 . The bottom of the heat dissipation ports 903 is located at the heat conducting plate 901 .

[0025] Furthermore, the material of the housing 1 is the same as that of the partition 9 .

[0026] Furthermore, the surface of the liquid inlet 8 is provided with a plurality of through holes, and a dustproof net is provided at the through holes. When in a high-temperature environment for a long time, the temperature of the coolant may rise. By providing several through holes, the heat absorbed by the coolant can be dissipated again, thereby further improving the high temperature resistance. The setting of the dustproof net will block the dust controlled by the outside and prevent the contamination of the coolant.

[0027] During a long period of time, it is necessary to add coolant into the coolant inner cavity 6. The staff first unscrews the sealing cover 3, and then pours the coolant into the liquid inlet 8 to add the coolant.

[0028] It should be noted that, under high temperature, the heat generated by the capacitor body 7 will pass through the heat conducting plate 901 to the coolant cavity 6 and then be absorbed by the coolant, and the heat on the surface of the shell 1 will also enter the coolant through the heat conducting plate 901, thereby improving the high temperature resistance of the utility model.

[0029] A high temperature resistant plate 902 is arranged on the surface of the shell 1 and the partition 9, which will further improve the high temperature resistance of the utility model. In addition, a plurality of heat dissipation ports 903 are arranged on the high temperature resistant plate 902. The arrangement of the heat dissipation ports 903 can enable a certain amount of heat transfer between the coolant and the heat, thereby improving the high temperature resistance.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dry capacitor resistant to high temperature environment, comprising a housing (1), characterized in that: The two ends of the top of the shell (1) are provided with connection terminals (2), the two sides of the bottom of the shell (1) are provided with mounting ear plates (4) by welding, the two ends of the outer surface of the mounting ear plates (4) are provided with mounting openings (5), the inside of the shell (1) is provided with an inner cavity, the inner cavity of the shell (1) is provided with a partition (9), the partition (9) divides the inner cavity of the shell (1) into a cooling liquid inner cavity (6) and a capacitor storage inner cavity (10), the cooling liquid inner cavity (6) is located on the outer surface of the capacitor storage inner cavity (10), the capacitor storage inner cavity (10) is provided with a capacitor body (7), and the cooling liquid inner cavity (6) is provided with cooling liquid.

2. The high temperature resistant dry capacitor according to claim 1, characterized in that: Liquid inlets (8) are provided at both ends of the top of the cooling liquid inner cavity (6), and the surface of the liquid inlet (8) is provided with threads, and the surface of the liquid inlet (8) is connected to the sealing cover (3) by means of threads.

3. The high temperature resistant dry capacitor according to claim 1, characterized in that: The partition (9) is divided into a heat conduction plate (901) and a high temperature resistant plate (902); the high temperature resistant plate (902) is arranged on the top and bottom of the heat conduction plate (901); a plurality of heat dissipation ports (903) are arranged on the surface of the high temperature resistant plate (902); and the bottom of the heat dissipation port (903) is located at the heat conduction plate (901).

4. The high temperature resistant dry capacitor according to claim 1, characterized in that: The material of the shell (1) is the same as that of the partition (9).

5. The high temperature resistant dry capacitor according to claim 2, characterized in that: The surface of the liquid inlet (8) is provided with a plurality of through holes, and dustproof nets are provided at the through holes.

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