CN219370794U

CN219370794U - All-dry absorption capacitor

Info

Publication number: CN219370794U
Application number: CN202223220130.5U
Authority: CN
Inventors: 林锋; 于智强; 毛洪岩
Original assignee: Ningbo Hairong Electronic Appliance Science & Technology Co ltd
Current assignee: Ningbo Hairong Electronic Appliance Science & Technology Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-07-18
Anticipated expiration: 2032-12-02

Abstract

The utility model relates to the technical field of electrician electronics, in particular to a full-dry absorption capacitor; the inner container is fixedly connected with a connecting pipe, the upper end face of the inner container is slidably matched with an upper floating block, an explosion-proof block is arranged between the upper floating block and the first cavity, the upper floating block is clamped with the inner wall of the first cavity through a limiting block, liquid is filled between the outer wall of the inner container and the inner wall of the first cavity, and capacitance fillers are arranged in the inner container; according to the utility model, the oval shell and the explosion-proof block are arranged, so that the risk of explosion of the dry capacitor is effectively reduced, and the liquid and the floating block are used for effectively reminding the dry capacitor that the shell is deformed due to temperature, so that the dry capacitor is replaced in time, and the use safety of the dry capacitor is effectively improved.

Description

All-dry absorption capacitor

Technical Field

The utility model relates to the technical field of electrician electronics, in particular to a full-dry absorption capacitor.

Background

Two conductors close to each other with a layer of non-conductive insulating medium sandwiched between them, constitute a capacitor. When a voltage is applied between the two plates of the capacitor, the capacitor stores a charge. The capacitance of the capacitor is equal in value to the ratio of the amount of charge on one conductive plate to the voltage between the two plates. The basic unit of capacitance of the capacitor is farad (F). The capacitive element is generally denoted by the letter C in the circuit diagram, wherein the power capacitor filled with non-liquid insulation is a dry capacitor;

in the existing products, the problems of oil seepage and oil leakage of the dry capacitor cannot occur. Compared with an oil immersed capacitor, the dry capacitor has good environmental protection performance. And secondly, the manufacturing is simple, the product quality is easy to ensure, and the intermediate medium of the dry capacitor can be divided into a gas state and a solid state, wherein the solid state dry capacitor is filled by solid state insulators, such as vermiculite, epoxy resin and the like. Dry capacitors of this type are prone to bursting under sealed conditions, and gaseous dry capacitors are filled with gaseous insulation, such as nitrogen. Dry capacitors of this type are prone to flashovers during operation;

however, in practical use, both solid dry capacitors and gaseous dry capacitors, the outer case of which is subject to expansion problems, wherein the gaseous dry capacitor is subject to volume change due to temperature change, and the capacitor is often in a high temperature environment, so that the gaseous dry capacitor outer case is also expanded to a small extent, and the solid dry capacitor is subject to explosion risk, which is easier to expand, and which certainly reduces the use safety of the dry capacitor, and document CN214797127U mentions a dry capacitor which avoids explosion by pressure release, and although the explosion of the solid dry capacitor has a good effect, the expansion of the gaseous dry capacitor is not a good preventive effect, which further limits the use and manufacture of the dry capacitor.

Disclosure of Invention

The utility model provides a full dry absorption capacitor aiming at the defects in the prior art.

In order to solve the technical problems, the utility model solves the technical problems by the following technical proposal

The utility model provides a full-dry absorption capacitor, which comprises a shell and an inner container, wherein a first cavity is formed in the shell, the inner container is placed in the first cavity, a connecting pipe is fixedly connected to the upper end face of the inner container, an upper floating block is slidably matched with the upper end face of the inner container, an explosion-proof block is arranged between the upper floating block and the first cavity, the upper floating block is clamped with the inner wall of the first cavity through a limiting block, liquid is filled between the outer wall of the inner container and the inner wall of the first cavity, and a capacitor filler is arranged in the inner container.

Further, the cross section of the shell is elliptical, the first cavity is a cylindrical cavity, and the weak part is in contact with the explosion-proof block; by setting the shape of the housing and the shape of the first cavity, the resistance of the housing to explosion and expansion is realized, and the influence of capacitance expansion on the housing is effectively reduced.

Further, a first groove is formed in the bottom end of the first cavity, a first sliding block is slidably matched in the first groove, and the first sliding block is fixedly connected with the limiting block; through setting up first recess and first slider to realized stopper relative first cavity directional slip.

Further, a second groove is formed in the lower end face of the upper floating block, a second sliding block is slidably matched in the second groove, and the second sliding block is fixedly connected with the limiting block; through setting up second recess and second slider to make the stopper can be relative the directional slip of floating block, and then make the weak department that oval shell and first cavity formed filled by the stopper, make the explosion-proof ability of shell promote greatly.

Further, the upper end face of the upper floating block is provided with a plurality of limiting rods, and the limiting rods are perpendicular to the upper floating block; through setting up the gag lever post to make the floating block by the gag lever post spacing, make the floating block avoid rotatory promptly, and then make the stopper can be steady slip and make the floating block can be spacing slide from top to bottom.

Further, a sealing cover is arranged at the upper end of the floating block, and a first through hole in sliding fit with the limiting rod is arranged on the sealing cover; by providing a cover, the liquid is prevented from leaking.

Further, the outer diameter of the sealing cover is larger than that of the floating block, and the outer wall of the sealing cover is in interference fit with the inner wall of the first cavity; by providing the outer diameter of the closure, the sealing action of the closure is further improved.

Further, an indication block is arranged on the end face, away from the floating block, of the limiting rod; through setting up the instruction piece to make when the instruction piece position changes, the come-up piece changes promptly, and then can observe whether the condenser explodes or expands, then realize having fine prevention effect to gaseous dry-type condenser's inflation.

Further, the floating block is made of flexible materials; through the material that sets up the floating block to make the floating block can carry out the deformation of certain degree, and then make even the condenser take place a large amount of deformation and cause first cavity to take place deformation, the floating block still can normally work.

Further, the outer diameter of the connecting pipe is smaller than that of the inner container, the inner diameter of the floating block is smaller than that of the inner container, and the floating block is in sliding fit with the connecting pipe; through setting up shape and external diameter and internal diameter of connecting pipe to make when the inner bag takes place to extrude, when the condenser took place to shrink promptly, the upper floating block can be spacing by the up end of inner bag after descending to certain position, and then avoid the upper floating block to be damaged.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the oval shell and the explosion-proof block are arranged, so that the risk of explosion of the dry capacitor is effectively reduced, and the liquid and the floating block are used for effectively reminding the dry capacitor that the shell is deformed due to temperature, so that the dry capacitor is replaced in time, and the use safety of the dry capacitor is effectively improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present application;

FIG. 2 is a schematic diagram of the overall front view structure of the present use novel;

FIG. 3 is a schematic diagram of the overall explosive structure of the present use novel;

FIG. 4 is a schematic view of the novel housing structure;

FIG. 5 is a schematic view of the structure of the novel liner, floating blocks and sealing cover;

FIG. 6 is a schematic diagram of the working structure of the present application;

reference numerals in the drawings represent respectively: 1. a housing; 2. an inner container; 3. a first cavity; 4. a connecting pipe; 5. a floating block; 6. an explosion-proof block; 7. a limiting block; 8. a liquid; 9. a first groove; 10. a first slider; 11. a second groove; 12. a second slider; 13. a limit rod; 14. a cover; 15. a first through hole; 16. indicating a block.

Detailed Description

The present utility model is described in further detail below with reference to the accompanying drawings.

The following description is presented to enable one of ordinary skill in the art to practice the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. indicate orientations or positions based on the orientation or positional relationship shown in the drawings, which are merely for convenience in describing the present simplified description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus the above terms are not to be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

The utility model provides a full-dry absorption capacitor, referring to figures 1-6, comprising a shell 1 and an inner container 2, wherein the shell 1 and the inner container 2 are preferably made of aluminum alloy materials, the height of the shell 1 is consistent with the height of the whole capacitor, the inner container 2 is consistent with the height of the effective part of the capacitor, a first cavity 3 is arranged in the shell 1, the inner container 2 is arranged in the first cavity 3, a capacitor is arranged in the inner container 2, the upper end surface of the inner container 2 is fixedly connected with a connecting pipe 4, the upper end surface of the inner container 2 is in sliding fit with an upper floating block 5, an explosion-proof block 6 is arranged between the upper floating block 5 and the first cavity 3, the preferable explosion-proof block 6 is a ceramic block, the upper floating block 5 is clamped with the inner wall of the first cavity 3 through a limiting block 7, liquid 8 is filled between the outer wall of the inner container 2 and the inner wall of the first cavity 3, and a capacitor filler is arranged in the inner container 2.

Wherein the cross section of the shell 1 is elliptical, the first cavity 3 is a cylindrical cavity, and the weak part is contacted with the explosion-proof block 6; by providing the shape of the housing 1 and the shape of the first cavity 3, the housing 1 is resistant to explosion and expansion, and the influence of capacitive expansion on the housing 1 is effectively reduced.

The bottom end of the first cavity 3 is provided with a first groove 9, a first sliding block 10 is slidably matched in the first groove 9, and the first sliding block 10 is fixedly connected with the limiting block 7; by arranging the first groove 9 and the first sliding block 10, the limiting block 7 can slide directionally relative to the first cavity 3.

The lower end face of the upper floating block 5 is provided with a second groove 11, a second sliding block 12 is slidably matched in the second groove 11, and the second sliding block 12 is fixedly connected with the limiting block 7; through setting up second recess 11 and second slider 12 to make stopper 7 can be relative upward floating block 5 directional slip, and then make the weak department that oval shell 1 and first cavity 3 formed filled by stopper 7, make the explosion-proof ability of shell 1 promote greatly.

Wherein, the upper end surface of the upper floating block 5 is provided with a plurality of limiting rods 13, and the limiting rods 13 are vertical to the upper floating block 5; through setting up gag lever post 13 to make floating block 5 by gag lever post 13 spacing, make floating block 5 avoid rotatory promptly, and then make stopper 7 can steady slip and make floating block 5 can spacing slide from top to bottom.

The upper end of the floating block 5 is provided with a sealing cover 14, and the sealing cover 14 is provided with a first through hole 15 which is in sliding fit with the limiting rod 13; by providing the cover 14, the liquid 8 is prevented from leaking.

Wherein, the outer diameter of the sealing cover 14 is larger than the outer diameter of the floating block 5, and the outer wall of the sealing cover 14 is in interference fit with the inner wall of the first cavity 3; by providing the outer diameter of the closure 14, the sealing action of the closure 14 is further enhanced.

Wherein, the end surface of the limiting rod 13 far away from the floating block 5 is provided with an indicating block 16; by arranging the indicating block 16, when the position of the indicating block 16 is changed, namely the floating block 5 is changed, whether the capacitor explodes or expands can be observed, and then a good prevention effect on the expansion of the gaseous dry capacitor is realized.

Wherein the floating block 5 is made of flexible material; through setting up the material of the upper floating block 5 to make the upper floating block 5 can carry out the deformation of certain degree, and then make even the condenser take place a large amount of deformation and cause first cavity 3 to take place deformation, the upper floating block 5 still can normally work.

Wherein, the outer diameter of the connecting pipe 4 is smaller than the outer diameter of the liner 2, the inner diameter of the floating block 5 is smaller than the outer diameter of the liner 2, and the floating block 5 is in sliding fit with the connecting pipe 4; through setting up shape and external diameter and internal diameter of connecting pipe 4 to make when inner bag 2 takes place to extrude, when the condenser took place to shrink promptly, upper floating block 5 can be spacing by the up end of inner bag 2 after descending to certain position, and then avoid upper floating block 5 to be damaged.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.

Claims

1. The utility model provides a full dry type absorption capacitor, includes shell (1) and inner bag (2), its characterized in that, the inside of shell (1) is provided with first cavity (3), inner bag (2) have been placed in first cavity (3), up end fixedly connected with connecting pipe (4) of inner bag (2), up end sliding fit of inner bag (2) has come-up block (5), be provided with explosion-proof block (6) between come-up block (5) and first cavity (3), go-up block (5) are through stopper (7) and the inner wall joint of first cavity (3), the packing has liquid (8) between the outer wall of inner bag (2) and the inner wall of first cavity (3), the inside of inner bag (2) is provided with the electric capacity filler.

2. A fully dry absorption capacitor according to claim 1, wherein the cross section of the housing (1) is oval, and the first cavity (3) is a cylindrical cavity, wherein the weakness is in contact with the explosion proof block (6).

3. The full dry absorption capacitor according to claim 1, wherein a first groove (9) is formed in the bottom end of the first cavity (3), a first sliding block (10) is slidably matched in the first groove (9), and the first sliding block (10) is fixedly connected with the limiting block (7).

4. The full-dry absorption capacitor according to claim 1, wherein a second groove (11) is formed in the lower end face of the upper floating block (5), a second sliding block (12) is slidably matched in the second groove (11), and the second sliding block (12) is fixedly connected with the limiting block (7).

5. The full-dry absorption capacitor according to claim 1, wherein a plurality of limit rods (13) are arranged on the upper end face of the floating block (5), and the limit rods (13) are perpendicular to the floating block (5).

6. The full dry absorption capacitor according to claim 5, wherein a cover (14) is provided at the upper end of the floating block (5), and the cover (14) is provided with a first through hole (15) in sliding fit with the limit rod (13).

7. A fully dry absorption capacitor according to claim 6, wherein the outer diameter of the cover (14) is larger than the outer diameter of the floating block (5), and the outer wall of the cover (14) is in interference fit with the inner wall of the first cavity (3).

8. The full dry absorption capacitor according to claim 5, wherein the end surface of the limit rod (13) far away from the floating block (5) is provided with an indication block (16).

9. A fully dry absorption capacitor according to claim 1, wherein the floating block (5) is a flexible material.

10. The full dry absorption capacitor as claimed in claim 1, wherein the outer diameter of the connecting pipe (4) is smaller than the outer diameter of the liner (2), the inner diameter of the floating block (5) is smaller than the outer diameter of the liner (2), and the floating block (5) is in sliding fit with the connecting pipe (4).