Direct current support capacitor

Abstract

The utility model relates to the technical field of capacitors, in particular to a direct current support capacitor, which comprises a protective shell, a mounting assembly arranged at the top of the protective shell, and a heat dissipation assembly arranged in the protective shell. When the capacitor body is in use, the connecting spring can quickly jack up the mounting cover, then the mounting cover is separated from the protective shell, the working efficiency is improved during maintenance and disassembly, meanwhile, mounting is facilitated, certain convenience is achieved, and the heat dissipation assembly is arranged, and a second heat dissipation plate, heat dissipation fins and a first heat dissipation plate are arranged on the outer surface of the capacitor body, so that the heat dissipation efficiency is improved. The capacitor body is wrapped in sequence, then heat dissipation is conducted on the capacitor body, meanwhile, the second heat dissipation plate, the heat dissipation fins and the first heat dissipation plate are fixed through the fixing ropes, mounting and dismounting are convenient, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a direct current support capacitor. Background Art

[0002] DC support capacitors, also known as DC-Link capacitors. DC support capacitors are a type of passive device. DC support capacitors are currently mainly made of polypropylene film dielectric DC support capacitors, which have the advantages of high voltage resistance, high current resistance, low impedance, low inductance, small capacity loss, small leakage current, good temperature performance, fast charging and discharging speed, long service life (about 100,000 hours), good safety and explosion-proof stability, and easy installation without polarity. They are widely used in the power electronics industry.

[0003] Prior art, such as: CN209297907U a DC support capacitor, the advantage of the utility model is that the capacitor generates heat after working for a long time, and the heat is transferred to the air through the insulating block, the heat dissipation column, and the heat dissipation block. A heat dissipation cavity is provided in the heat dissipation block. The heat dissipation liquid in the heat dissipation cavity absorbs the heat of the heat dissipation column and evaporates to take away the heat, and quickly brings the heat of the heat dissipation column to the upper end and dissipates it into the air through the serrated protrusions, maintaining the temperature difference at both ends of the heat dissipation column, and the heat dissipation efficiency is high.

[0004] However, the device still has certain shortcomings during use. Since the shell of the device is integrally formed, when the capacitor core in the shell needs to be inspected or disassembled and installed, the work efficiency is reduced. At the same time, the device absorbs the heat of the heat dissipation column through the heat dissipation liquid in the heat dissipation cavity and evaporates the heat away. Due to the consumption of the heat dissipation liquid, it not only needs to be replenished in time, but also the heat dissipation efficiency will be reduced when the heat dissipation liquid is reduced, which not only increases the labor intensity, but also reduces the heat dissipation efficiency, thereby reducing the practicality. Utility Model Content

[0005] The purpose of the utility model is to provide a DC support capacitor to solve the problem raised in the above background technology that since the shell of the device is integrally formed, when the capacitor core in the shell needs to be inspected or disassembled and installed, the work efficiency is reduced, and at the same time, the device absorbs the heat of the heat dissipation column through the heat dissipation liquid in the heat dissipation cavity and evaporates the heat away. Due to the consumption of the heat dissipation liquid, not only does it need to be replenished in time, but when the heat dissipation liquid is reduced, the heat dissipation efficiency will also be reduced, which not only increases the labor intensity, but also reduces the heat dissipation efficiency, thereby reducing the practicality.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A DC support capacitor comprises a protective shell, a mounting assembly is arranged on the top of the protective shell, and a heat dissipation assembly is arranged inside the protective shell;

[0008] The mounting assembly comprises a mounting cover at the top of the protective shell, an extension plate is fixedly connected to the bottom of the mounting cover, a connecting spring is fixedly connected to the bottom of the extension plate, a damper is arranged in the connecting spring, a mounting slot is arranged at the top of the protective shell, the extension plate is opposite to the mounting slot, the extension plate extends into the mounting slot and abuts against the mounting slot, a mounting hole is arranged on the side of the extension plate, a fixing rod is arranged on the side of the protective shell, the fixing rod penetrates the protective shell and extends into the mounting hole, and the fixing rod is plugged into the protective shell;

[0009] The heat dissipation assembly includes a capacitor body in a protective shell, the outer surface of the capacitor body is abutted with a second heat dissipation plate, the side of the second heat dissipation plate is abutted with a heat dissipation fin, the side of the heat dissipation fin is abutted with the first heat dissipation plate, and the heat dissipation fin is located between the first heat dissipation plate and the second heat dissipation plate.

[0010] As a preferred solution of the utility model, the two ends of the heat dissipation fin are respectively fixedly connected with a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are clamped, and the two ends of the first heat dissipation plate are respectively fixedly connected with the first connecting plate and the second connecting plate.

[0011] As a preferred solution of the utility model, a fixing rope is provided on the outer surface of the first heat sink, and the fixing rope passes through the first connecting plate and the second connecting plate respectively, and the ends of the fixing rope are clamped by a snap buckle.

[0012] As a preferred solution of the utility model, the top of the capacitor body is fixedly connected with a positive electrode pin and a negative electrode pin, respectively, and the positive electrode pin and the negative electrode pin respectively penetrate the mounting cover and extend to the top of the mounting cover.

[0013] As a preferred solution of the utility model, a parameter sticker is fixedly connected to the outer surface of the protective shell, and an anti-corrosion solution is coated on the outer surface of the protective shell.

[0014] As a preferred solution of the utility model, two fixing ropes are provided, and the material of the two fixing ropes is stainless steel.

[0015] As a preferred solution of the utility model, two fixing rods are provided, and the two fixing rods are located opposite to each other.

[0016] As a preferred solution of the utility model, the protective shell and the capacitor body are both cylindrical in shape, and the bottom of the capacitor body is snap-fitted to the protective shell.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. In the utility model, by setting the installation assembly, since the extension plate extends into the installation slot and abuts against the installation slot, when the fixing rod is pulled out, the connecting spring will quickly lift the installation cover, and then the installation cover and the protective shell are separated, thereby improving the work efficiency during maintenance and disassembly, and facilitating installation, which has a certain convenience.

[0019] 2. In the utility model, by setting a heat dissipation component, a second heat dissipation plate, heat dissipation fins and a first heat dissipation plate are respectively arranged on the outer surface of the capacitor body, which wraps the capacitor body in sequence to dissipate the heat of the capacitor body. At the same time, the second heat dissipation plate, heat dissipation fins and the first heat dissipation plate are fixed by a fixing rope, which is convenient for installation and disassembly, thereby improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation assembly structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the heat dissipation component structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the side structure of the second heat dissipation plate of the utility model.

[0024] In the figure: 1. Protective shell; 2. Mounting assembly; 201. Mounting cover; 202. Extension plate; 203. Connecting spring; 204. Mounting slot; 205. Fixing rod; 206. Mounting hole; 3. Heat dissipation assembly; 301. Capacitor body; 302. Positive pin; 303. Negative pin; 304. First heat sink; 305. Fixing rope; 306. Heat dissipation fin; 307. Second heat sink; 308. First connecting plate; 309. Second connecting plate; 310. Snap buckle; 4. Parameter sticker. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] For examples, see Figure 1-4 , the utility model provides a technical solution:

[0027] A DC support capacitor comprises a protective shell 1, a mounting assembly 2 is arranged on the top of the protective shell 1, and a heat dissipation assembly 3 is arranged inside the protective shell 1.

[0028] In this embodiment, Figure 1 and Figure 2 As shown, the mounting assembly 2 includes a mounting cover 201 on the top of the protective shell 1, an extension plate 202 is fixedly connected to the bottom of the mounting cover 201, a connecting spring 203 is fixedly connected to the bottom of the extension plate 202, a damper is arranged in the connecting spring 203, a mounting groove 204 is provided on the top of the protective shell 1, the extension plate 202 is opposite to the mounting groove 204, the extension plate 202 extends into the mounting groove 204 and abuts against the mounting groove 204, a mounting hole 206 is provided on the side of the extension plate 202, a fixing rod 205 is provided on the side of the protective shell 1, the fixing rod 205 penetrates the protective shell 1 and extends into the mounting hole 206, the fixing rod 205 is plugged into the protective shell 1, a parameter sticker 4 is fixedly connected to the outer surface of the protective shell 1, an anti-corrosion solution is coated on the outer surface of the protective shell 1, two fixing rods 205 are arranged, and the two fixing rods 205 are opposite to each other.

[0029] Among them, since the extension plate 202 extends into the installation groove 204 and abuts against the installation groove 204, when the fixing rod 205 is pulled out, the connecting spring 203 will quickly lift the installation cover 201, and then the installation cover 201 and the protective shell 1 are separated, thereby improving work efficiency during inspection and disassembly.

[0030] In this embodiment, Figure 1 , Figure 3 and Figure 4As shown, the heat dissipation assembly 3 includes a capacitor body 301 in the protective shell 1, the outer surface of the capacitor body 301 is abutted with a second heat dissipation plate 307, the side of the second heat dissipation plate 307 is abutted with a heat dissipation fin 306, the side of the heat dissipation fin 306 is abutted with a first heat dissipation plate 304, the heat dissipation fin 306 is located between the first heat dissipation plate 304 and the second heat dissipation plate 307, and the two ends of the heat dissipation fin 306 are respectively fixedly connected with a first connecting plate 308 and a second connecting plate 309, the first connecting plate 308 and the second connecting plate 309 are clamped, and the two ends of the first heat dissipation plate 304 are respectively fixedly connected with the first connecting plate 308 and the second connecting plate 309, A fixing rope 305 is provided on the outer surface of the first heat sink 304, and the fixing rope 305 passes through the first connecting plate 308 and the second connecting plate 309 respectively. The end of the fixing rope 305 is clamped by a snap buckle 310. The top of the capacitor body 301 is fixedly connected with a positive pin 302 and a negative pin 303 respectively. The positive pin 302 and the negative pin 303 pass through the mounting cover 201 respectively and extend to the top of the mounting cover 201. Two fixing ropes 305 are provided, and the material of the two fixing ropes 305 is stainless steel. The shape of the protective shell 1 and the capacitor body 301 are both cylindrical, and the bottom of the capacitor body 301 is clamped with the protective shell 1.

[0031] Among them, the second heat sink 307, the heat sink fins 306 and the first heat sink 304 wrap the capacitor body 301 in turn, and the first connecting plate 308 and the second connecting plate 309 are clamped, and the end of the fixing rope 305 is fixed by the clamping buckle 310, which not only can work stably during heat dissipation, but also facilitates installation and disassembly, while improving the efficiency of heat dissipation.

[0032] The working process of the utility model: when the DC support capacitor structure designed by the present invention is in operation, first check whether the device is used normally, install the capacitor body 301 in the protective shell body 1, and at the same time, the positive pin 302 and the negative pin 303 extend to the top of the installation cover 201, so that the capacitor body 301 can work. Since the second heat sink 307, the heat sink fin 306 and the first heat sink 304 are respectively provided on the outer surface of the capacitor body 301, the capacitor body 301 is wrapped in turn to dissipate heat for the capacitor body 301. At the same time, the second heat sink 307, the heat sink fin 306 and the first heat sink 304 are fixed by the fixing rope 305, and at the same time, the first connecting plate 30 8 is snapped with the second connecting plate 309, and the end of the fixing rope 305 is fixed by the snap buckle 310, which can not only work stably during heat dissipation, but also facilitate installation and disassembly, thereby improving the efficiency of heat dissipation and at the same time improving practicality. When disassembly and maintenance are required, since the extension plate 202 extends into the installation slot 204 and abuts against the installation slot 204, when the fixing rod 205 is pulled out, the connecting spring 203 will quickly lift the installation cover 201, and then the installation cover 201 and the protective shell 1 are separated, thereby improving work efficiency during inspection and disassembly, and facilitating installation, with a certain degree of convenience. A parameter sticker 4 is fixedly connected to the outer surface of the protective shell 1, which is convenient for understanding the capacitor body 301.

[0033] Although 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 DC support capacitor, comprising a protective shell (1), characterized in that: A mounting assembly (2) is arranged on the top of the protective shell (1), and a heat dissipation assembly (3) is arranged inside the protective shell (1); The mounting assembly (2) comprises a mounting cover (201) at the top of the protective shell (1); the bottom of the mounting cover (201) is fixedly connected to an extension plate (202); the bottom of the extension plate (202) is fixedly connected to a connection spring (203); a damper is arranged in the connection spring (203); a mounting groove (204) is provided at the top of the protective shell (1); the extension plate (202) is opposite to the mounting groove (204); the extension plate (202) extends into the mounting groove (204) and abuts against the mounting groove (204); a mounting hole (206) is provided on the side of the extension plate (202); a fixing rod (205) is provided on the side of the protective shell (1); the fixing rod (205) passes through the protective shell (1) and extends into the mounting hole (206); the fixing rod (205) is plugged into the protective shell (1); The heat dissipation assembly (3) comprises a capacitor body (301) in a protective shell (1); the outer surface of the capacitor body (301) is abutted against a second heat dissipation plate (307); the side surface of the second heat dissipation plate (307) is abutted against a heat dissipation fin (306); the side surface of the heat dissipation fin (306) is abutted against a first heat dissipation plate (304); and the heat dissipation fin (306) is located between the first heat dissipation plate (304) and the second heat dissipation plate (307).

2. A DC support capacitor according to claim 1, characterized in that: The two ends of the heat dissipation fin (306) are respectively fixedly connected to a first connecting plate (308) and a second connecting plate (309), the first connecting plate (308) and the second connecting plate (309) are snap-fitted, and the two ends of the first heat dissipation plate (304) are respectively fixedly connected to the first connecting plate (308) and the second connecting plate (309).

3. A DC support capacitor according to claim 1, characterized in that: A fixing rope (305) is provided on the outer surface of the first heat dissipation plate (304), and the fixing rope (305) passes through the first connecting plate (308) and the second connecting plate (309) respectively, and the end of the fixing rope (305) is clamped by a clamping buckle (310).

4. A DC support capacitor according to claim 1, characterized in that: The top of the capacitor body (301) is respectively fixedly connected with a positive electrode pin (302) and a negative electrode pin (303), and the positive electrode pin (302) and the negative electrode pin (303) respectively penetrate the installation cover (201) and extend to the top of the installation cover (201).

5. The DC support capacitor according to claim 1, characterized in that: A parameter sticker (4) is fixedly connected to the outer surface of the protective shell (1), and an anti-corrosion solution is coated on the outer surface of the protective shell (1).

6. A DC support capacitor according to claim 3, characterized in that: Two fixing ropes (305) are provided, and the material of the two fixing ropes (305) is stainless steel.

7. A DC support capacitor according to claim 1, characterized in that: Two fixing rods (205) are provided, and the two fixing rods (205) are located opposite to each other.

8. The DC support capacitor according to claim 1, characterized in that: The protective shell (1) and the capacitor body (301) are both cylindrical in shape, and the bottom of the capacitor body (301) is snap-fitted to the protective shell (1).

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