Anti-breakdown capacitor

Abstract

The utility model relates to the technical field of capacitors, and discloses an anti-breakdown capacitor, which comprises a shell, a capacitor body and a sealing cover, the capacitor body is positioned in the shell, grooves are arranged at the front end and the rear end of the shell and in the middle of two sides of the shell, two first threaded holes are arranged on the inner bottom surfaces of the grooves at the front end and the rear end, and the sealing cover is arranged on the shell. Positioning pieces are rotationally connected to the middles of the inner bottom faces of the grooves in the two sides, the outer wall of the sealing cover is tightly attached to the inner wall of the upper end of the shell, and connecting blocks are fixedly connected to the front end and the rear end of the outer wall of the sealing cover and the middles of the two sides of the sealing cover. According to the utility model, through the design of the grooves and the threaded holes at the front end, the rear end and the two sides of the shell, the capacitor body can be firmly fixed in the shell, and internal elements are prevented from shifting, so that the stability of the whole structure is improved, and the capacitor can be quickly positioned during installation through the design of the positioning pieces and the positioning holes; and through bolt connection, assembly and disassembly are easy, and maintenance and replacement are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to capacitor technical field especially relates to a withstand voltage capacitor. BACKGROUND

[0002] Capacitor is an energy storage element, it is composed of two conductors (usually metal plate) and insulating material (called dielectric) that is sandwiched between them, when capacitor connects to power supply, electric charge will accumulate on two conductors, form electric field and store energy, the main function of capacitor is to store and release electric energy, it has wide application in various electronic equipment, such as filtering, coupling, tuning, energy conversion and transient suppression etc., the performance parameters of capacitor include capacitance, withstand voltage, dielectric loss and equivalent series resistance etc., these parameters determine the applicability of capacitor in different applications.

[0003] In the installation process, traditional capacitor usually lacks the design of quick positioning, this not only makes the installation process appear cumbersome, inefficient, and is also inconvenient when disassembling, in addition, traditional capacitor often adopts relatively simple dielectric material, this material is prone to breakdown when facing high electric field intensity, and then leads to capacitor failure, which affects its reliability and service life.

[0004] Therefore, the person skilled in the art provides a withstand voltage capacitor to solve the problems in the above background. UTILITY MODEL CONTENT

[0005] The utility model discloses a withstand voltage capacitor to solve the shortcomings in the prior art, through the recess and screw hole design of the front and rear end and both sides of the shell, can ensure that capacitor body is firmly fixed in the shell, prevents internal element displacement, thereby improving the stability of overall structure, through the design of positioning piece and positioning hole, capacitor can be quickly positioned when installing, and through bolt connection, easy to assemble and disassemble, convenient maintenance and replacement, the multilayer structure of capacitor body includes electrolytic paper, metal foil, dielectric layer and inner insulating layer, not only optimize the electrical performance of capacitor, also improve its withstand voltage capacity and withstand voltage performance, simultaneously, the double design of outer insulating layer and inner insulating layer effectively isolates electrode, reduces the risk of electric breakdown, further improves the safety performance of capacitor.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The anti-breakdown capacitor comprises a shell, a capacitor body and a sealing cover, the capacitor body is located in the interior of the shell, grooves are formed in the middle of the front end, the rear end and the two sides of the shell, two first threaded holes are formed in the inner bottom surface of the groove of the front end and the rear end, positioning members are rotationally connected to the middle of the inner bottom surface of the groove of the two sides, the outer wall of the sealing cover is tightly attached to the inner wall of the upper end of the shell, connecting blocks are fixedly connected to the middle of the outer wall of the front end and the rear end and the two sides of the sealing cover, two second threaded holes are formed in the upper surface of the connecting block of the front end and the rear end, positioning holes are formed in the middle of the upper surface of the connecting block of the two sides, the upper end of the positioning member penetrates through the positioning hole to the upper end of the positioning hole, and the connecting block, the first threaded hole and the second threaded hole of the front end and the rear end are threadedly connected through fixing bolts;

[0008] Through the above technical scheme, the capacitor body can be firmly fixed in the shell through the design of the grooves and threaded holes in the front end, the rear end and the two sides of the shell, preventing the displacement of internal components, thereby improving the stability of the overall structure. The capacitor can be quickly positioned during installation through the design of the positioning members and the positioning holes, and it is easy to assemble and disassemble through bolt connection, facilitating maintenance and replacement.

[0009] Further, the outer wall of the capacitor body is fixedly connected with an outer insulation layer, the outer wall of the outer insulation layer is tightly attached to the inner wall of the shell, the interior of the capacitor body is provided with multiple layers of electrolytic paper, the middle of the inner wall of the electrolytic paper is fixedly connected with a metal foil, the outer wall of the outermost layer of electrolytic paper is tightly attached to the inner wall of the capacitor body, the interior of the capacitor body is provided with two dielectric layers, the outer wall of the middle dielectric layer is tightly attached to the inner wall of the electrolytic paper, the inner wall of the dielectric layer is fixedly connected with an inner insulation layer, and the inner wall of the middle of the inner insulation layer is fixedly connected with an electrode.

[0010] Through the above technical scheme, the capacitor body is provided with additional insulation protection through the tight attachment of the outer insulation layer to the inner wall of the shell, effectively reducing the influence of the external environment on its electrical performance, thereby improving the overall insulation performance. In addition, the layered structure design of the multiple layers of electrolytic paper and the metal foil enhances the voltage resistance of the capacitor, enabling it to withstand higher voltage without being easily broken down. At the same time, the setting of the inner insulation layer constructs an additional safety barrier, further reducing the risk of direct breakdown between electrodes and improving the safety performance of the capacitor. This multi-layer structure design not only optimizes the electrical performance, but also enhances the mechanical strength of the capacitor, enabling it to better resist external physical impact and vibration, ensuring the stability and reliability of the capacitor.

[0011] Further, the lower surface of the sealing cover is fixedly connected with a sealing gasket, and the lower surface of the sealing gasket is tightly attached to the upper surface of the capacitor body.

[0012] By the technical scheme, the sealing gasket is designed, water, dust and other pollutants can be effectively prevented from entering the capacitor, and the sealing property of the capacitor body is enhanced.

[0013] Further, the upper ends of the electrodes all penetrate the capacitor body and the sealing cover to the upper end of the sealing cover.

[0014] By the technical scheme, the electrodes are designed to penetrate, so that when the capacitor is assembled, the leading-out parts of the electrodes do not need to be additionally processed, the production process is simplified, and the production efficiency is improved.

[0015] Further, the inner walls of the inner insulation layers in the middle part are all closely attached to the middle part of the outer wall of the electrolytic paper.

[0016] By the technical scheme, the inner insulation layers are closely attached to the electrolytic paper, the insulation performance between the two is ensured, the electric breakdown and leakage are effectively prevented, the safety and reliability of the capacitor are improved, the closely attached design reduces the gap between the inner insulation layers and the electrolytic paper, the uneven electric field distribution caused by the gap is avoided, and the electric field uniformity of the capacitor is improved.

[0017] Further, the outer walls of the connecting blocks are all closely attached to the inner walls of the grooves, and the lower surfaces of the positioning members on the two sides are all closely attached to the upper surfaces of the connecting blocks.

[0018] By the technical scheme, the connecting blocks are closely attached to the inner walls of the grooves, the stable position of the connecting blocks is ensured, the unstable structure caused by displacement during transportation, installation or use is avoided, the close attachment of the connecting blocks and the positioning members on the two sides further enhances the stability, a multi-point fixing structure is formed, and the overall mechanical strength is improved.

[0019] The utility model discloses have the following beneficial effects:

[0020] The anti-breakdown capacitor provided by the utility model is designed through the grooves and threaded holes on the front and rear ends and the two sides of the shell body, so that the capacitor body can be firmly fixed in the shell body and internal elements can be prevented from being displaced, thereby improving the stability of the overall structure. The capacitor can be quickly positioned during installation through the design of the positioning members and the positioning holes, and the capacitor is easy to assemble and disassemble through bolt connection, so that maintenance and replacement are facilitated. The capacitor body adopts a multilayer structure including electrolytic paper, metal foil, dielectric layer and inner insulation layer, which not only optimizes the electrical performance of the capacitor but also improves the withstand voltage capacity and anti-breakdown performance of the capacitor. Meanwhile, the double design of the outer insulation layer and the inner insulation layer effectively isolates the electrodes and reduces the risk of electric breakdown, thereby further improving the safety performance of the capacitor. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model provides an axonometric drawing of an anti-breakdown capacitor.

[0022] Figure 2 An explosion view of the anti-breakdown capacitor is provided for the utility model;

[0023] Figure 3 A sectional view of the anti-breakdown capacitor is provided for the utility model;

[0024] Figure 4 A partial structure isometric view of the anti-breakdown capacitor is provided for the utility model;

[0025] Figure 5 A partial structure explosion view of the anti-breakdown capacitor is provided for the utility model.

[0026] Legend:

[0027] 1, shell; 101, groove; 102, first threaded hole; 103, positioning piece; 2, capacitor body; 201, outer insulation layer; 3, sealing cover; 301, connecting block; 302, second threaded hole; 303, positioning hole; 304, sealing gasket; 4, electrolytic paper; 401, metal foil; 5, dielectric layer; 501, inner insulation layer; 6, electrode. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] Reference Figure 1 , Figure 4 and Figure 5The utility model provides a kind of concrete implementation of the utility model: a kind of withstands breakdown capacitor, including shell 1, capacitor body 2 and sealing cover 3, capacitor body 2 is located inside shell 1, recess 101 is all set up in the middle part of front end and rear end and both sides of shell 1, the inner bottom surface of front end and rear end recess 101 is all set up with two first threaded holes 102, the middle part of two sides recess 101 inner bottom surface is all rotationally connected with locating member 103, the inner wall of sealing cover 3 outer wall and shell 1 upper end is closely combined, the middle part of sealing cover 3 outer wall front end and rear end and both sides is fixedly connected with connecting block 301, the upper surface of front end and rear end connecting block 301 is all set up with two second threaded holes 302, the middle part of two sides connecting block 301 upper surface is all set up with locating hole 303, the upper end of locating member 103 is all penetrated locating hole 303 to the upper end of locating hole 303, and front end and rear end connecting block 301, first threaded hole 102 and second threaded hole 302 are all connected by fixed bolt thread, by the recess 101 of shell 1 front and rear end and both sides and threaded hole design, it can ensure that capacitor body 2 is firmly fixed in shell 1, prevent internal element displacement, to improve the stability of overall structure, by the design of locating member 103 and locating hole 303, capacitor can be quickly positioned when installing, and by bolt connection, it is easy to assemble and disassemble, convenient maintenance and replacement.

[0030] With reference to Figure 1 , Figure 2 and Figure 3 , the outer wall of capacitor body 2 is fixedly connected with an outer insulating layer 201, the inner wall of the outer insulating layer 201 is closely combined with the inner wall of the shell 1, the inside of the capacitor body 2 is provided with a plurality of layers of electrolytic paper 4, the middle part of the inner wall of the electrolytic paper 4 is fixedly connected with a metal foil 401, the outer wall of the outermost layer of electrolytic paper 4 is closely combined with the inner wall of the capacitor body 2, the inside of the capacitor body 2 is provided with two dielectric layers 5, the outer wall of the middle part of the dielectric layer 5 is closely combined with the inner wall of the electrolytic paper 4, the inner wall of the dielectric layer 5 is fixedly connected with an inner insulating layer 501, the inner wall of the middle part of the inner insulating layer 501 is fixedly connected with an electrode 6, the closely combined outer insulating layer 201 and the inner wall of the shell 1 provide additional insulation protection for the capacitor body 2, effectively reducing the influence of the external environment on its electrical performance, thereby improving the overall insulation performance, in addition, the laminated structure design of the plurality of layers of electrolytic paper 4 and the metal foil 401 enhances the withstand voltage capability of the capacitor, enabling it to withstand higher voltage without being easily broken down, at the same time, the setting of the inner insulating layer 501 builds an additional safety barrier, further reducing the risk of direct breakdown between the electrodes 6, improving the safety performance of the capacitor, this multi-layer structure design not only optimizes the electrical performance, but also enhances the mechanical strength of the capacitor, enabling it to more outstandingly resist external physical impact and vibration, ensuring the stability and reliability of the capacitor.

[0031] With reference to Figure 1 ,Figure 2 and Figure 5 The lower surface of the sealing cover 3 is fixedly connected with a sealing gasket 304, the lower surface of the sealing gasket 304 is closely attached to the upper surface of the capacitor body 2, through the design of the sealing gasket 304, it can effectively prevent moisture, dust and other pollutants from entering the capacitor, enhance the sealing performance of the capacitor body 2, the upper ends of the electrodes 6 all penetrate the capacitor body 2 and the sealing cover 3 to the upper end of the sealing cover 3, through the penetration design of the electrodes 6, it makes unnecessary to additionally process the lead-out part of the electrodes 6 when assembling the capacitor, simplifies the production process and improves the production efficiency, the inner walls of the inner insulation layers 501 are all closely attached to the middle part of the outer wall of the electrolytic paper 4, through the close attachment of the inner insulation layers 501 and the electrolytic paper 4, it ensures the insulation performance between them, effectively prevents the electric breakdown and leakage phenomenon, improves the safety and reliability of the capacitor, and the close attachment design reduces the gap between the inner insulation layers 501 and the electrolytic paper 4, avoids the uneven electric field distribution caused by the gap, improves the electric field uniformity of the capacitor, the outer walls of the connecting blocks 301 are all closely attached to the inner walls of the grooves 101, the lower surfaces of the two side positioning members 103 are all closely attached to the upper surfaces of the connecting blocks 301, through the close attachment of the connecting blocks 301 and the inner walls of the grooves 101, it ensures the stable positioning of the connecting blocks 301, avoids the unstable structure caused by displacement during transportation, installation or use, the close attachment of the two side positioning members 103 and the connecting blocks 301 further enhances this stability, forms a multi-point fixed structure, and improves the overall mechanical strength.

[0032] Working principle: first, the capacitor body 2 is located inside the shell 1, through the design of the grooves 101 and the threaded holes at the front and rear ends and both sides of the shell 1, it realizes the firm fixation of the body inside the shell 1, prevents the displacement of the internal elements, and ensures the stability of the overall structure, the cooperation of the positioning members 103 and the positioning holes 303 enables the capacitor to be quickly positioned during installation, the bolt connection mode facilitates assembly and disassembly, is conducive to maintenance and replacement, the multi-layer structure of the capacitor body 2, including the outer insulation layer 201, the multi-layer electrolytic paper 4, the metal foil 401, the dielectric layer 5 and the inner insulation layer 501, provides excellent electrical performance for it, the close attachment of the outer insulation layer 201 and the inner wall of the shell 1 provides additional insulation protection for the capacitor body 2, reduces the influence of the external environment on the electrical performance, the layered structure of the electrolytic paper 4 and the metal foil 401 enhances the voltage resistance of the capacitor, so that it can withstand higher voltage without being easily broken down, the setting of the inner insulation layer 501 further reduces the risk of direct breakdown between the electrodes 6, improves the safety performance, in addition, the sealing cover 3 is closely attached to the inner wall of the upper end of the shell 1, cooperates with the design of the sealing gasket 304, effectively prevents moisture, dust and other pollutants from entering the capacitor, and enhances the sealing performance.

[0033] It should be pointed out finally that: the above only for the preferred specific embodiments of the present application, and is not used to limit the present application, although the present application is described in detail with reference to the foregoing specific embodiments, for the skilled in the art, it still can be modified to the technical solutions recorded in the foregoing each specific embodiment, or to the equivalent replacement of part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. An anti-breakdown capacitor comprising a housing (1), a capacitor body (2) and a sealing cover (3), characterized in that: The capacitor body (2) is located in the inside of the shell (1), the recess (101) is set in the middle of the front end and the rear end and both sides of the shell (1), the inner bottom surface of the recess (101) of the front end and the rear end is provided with two first threaded holes (102), the middle of the inner bottom surface of the recess (101) of both sides is rotationally connected with the positioning piece (103), the outer wall of the sealing cover (3) is closely attached to the inner wall of the upper end of the shell (1), the outer wall of the sealing cover (3) is fixedly connected with the connecting block (301) in the middle of the front end and the rear end and both sides, the upper surface of the connecting block (301) of the front end and the rear end is provided with two second threaded holes (302), the upper surface of the connecting block (301) of both sides is provided with a positioning hole (303), the upper end of the positioning piece (103) penetrates through the positioning hole (303) to the upper end of the positioning hole (303), and the connecting block (301), the first threaded hole (102) and the second threaded hole (302) of the front end and the rear end are screw-connected through the fixing bolt.

2. A voltage withstanding capacitor according to claim 1, wherein: The outer wall of the capacitor body (2) is fixedly connected with an outer insulation layer (201), the outer wall of the outer insulation layer (201) is closely attached to the inner wall of the shell (1), the inside of the capacitor body (2) is provided with a plurality of electrolytic papers (4), the middle of the inner wall of the electrolytic paper (4) is fixedly connected with a metal foil (401), the outer wall of the outermost electrolytic paper (4) is closely attached to the inner wall of the capacitor body (2), the inside of the capacitor body (2) is provided with two medium layers (5), the outer wall of the medium layer (5) in the middle is closely attached to the inner wall of the electrolytic paper (4), the inner wall of the medium layer (5) is fixedly connected with an inner insulation layer (501), and the inner wall of the middle of the inner insulation layer (501) is fixedly connected with an electrode (6).

3. The voltage standoff capacitor of claim 1, wherein: The lower surface of the sealing cover (3) is fixedly connected with a sealing gasket (304), and the lower surface of the sealing gasket (304) is closely attached to the upper surface of the capacitor body (2).

4. The voltage standoff capacitor of claim 2, wherein: The upper end of the electrode (6) penetrates through the capacitor body (2) and the sealing cover (3) to the upper end of the sealing cover (3).

5. The voltage standoff capacitor of claim 2, wherein: The inner wall of the middle of the inner insulation layer (501) is closely attached to the middle of the outer wall of the electrolytic paper (4).

6. The voltage standoff capacitor of claim 1, wherein: The outer wall of the connecting block (301) is closely attached to the inner wall of the recess (101), and the lower surface of the positioning piece (103) of both sides is closely attached to the upper surface of the connecting block (301). The outer wall of the connecting block (301) is closely attached to the inner wall of the recess (101), and the lower surface of the positioning piece (103) of both sides is closely attached to the upper surface of the connecting block (301).

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