CN210223782U

CN210223782U - Explosion-proof capacitor

Info

Publication number: CN210223782U
Application number: CN201921442468.0U
Authority: CN
Inventors: Yimin Su; 苏毅民
Original assignee: Foshan City Executes Nore Electric Applicance Co Ltd
Current assignee: Foshan City Executes Nore Electric Applicance Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-03-31
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses an explosion-proof capacitor, including shell and cap, the shell is the tube-shape of vertical setting, and the opening of shell makes progress, and the top of shell is located to the cap, is equipped with the outlet of leading wire on the cap, and the bottom wall of shell is to the inside sunken ball lamella form of shell. The bottom end wall through setting up the shell is to the inside sunken ball lamella form of shell, when the inside atmospheric pressure increase of shell leads to the inflation, because its inflation is a gradual change process, the inside material of shell can be to the bottom end wall extrusion, receives the inside sunken change of extruded bottom end wall from inside to outside protrusion, for the gas release space of inflation to reduce the emergence of the phenomenon of bursting that leads to because the inside inflation of condenser.

Description

Explosion-proof capacitor

Technical Field

The utility model relates to a condenser technical field, in particular to explosion-proof capacitor.

Background

The capacitor is one of electronic elements widely used in electronic equipment, and is widely applied to aspects of blocking AC, coupling, bypassing, filtering, tuning loop, energy conversion, control and the like in a circuit. In the process of long-time use of the capacitor, heat energy is easily generated, or electrolyte is evaporated due to breakdown, so that the internal air pressure of the capacitor is increased, the capacitor is expanded and even burst, other electronic components around the capacitor are damaged by the capacitor, a large amount of resources and cost are lost, and even the whole system is broken down. Accordingly, there is a need for an explosion-proof capacitor that reduces the occurrence of a capacitor burst due to internal expansion.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: provided is an explosion-proof capacitor capable of reducing the occurrence of a capacitor burst phenomenon due to internal expansion.

The utility model provides a solution of its technical problem is:

the utility model provides an explosion-proof capacitor, includes the casing and locates the inside electric capacity core of casing, the casing includes shell and cap, the shell is the tube-shape of vertical setting, the opening of shell makes progress, the cap is located on the opening of shell, the electric capacity core has anodal lead wire and negative pole lead wire, anodal lead wire with the negative pole lead wire runs through respectively the cap, the bottom end wall of shell is to the inside sunken ball lamella form of shell.

As a further improvement of the above technical solution, a connecting rope is arranged in the housing, a vent hole is arranged on the bottom end wall of the housing, a sealing plug is arranged on the vent hole, the sealing plug is positioned on the top of the bottom end wall of the housing, a movable end of the connecting rope is fixedly connected with the sealing plug, and a fixed end of the connecting rope is fixedly connected with the side wall of the housing; when the vent hole moves downwards to the lowest part, the distance between the vent hole and the fixed end is larger than the length of the connecting rope, so that the sealing plug is separated from the vent hole.

As a further improvement of the above technical scheme, be equipped with the horizontal backup pad that sets up in the shell, the backup pad with the shell rigid coupling, the backup pad is located the upside of blow vent, the stiff end is located in the backup pad, the upside of backup pad is located to the electric capacity core, be equipped with the intercommunication mouth in the backup pad, the upside and the downside of backup pad pass through the intercommunication mouth intercommunication.

As a further improvement of the above technical solution, a collecting box is arranged at the lower side of the housing, the collecting box has an inner cavity, the upper cavity wall of the inner cavity is the bottom end wall of the housing, an atmosphere through hole is arranged on the side cavity wall of the inner cavity, and a filtering device is arranged on the atmosphere through hole; when the vent hole moves downwards to the lowest part, a gap is arranged between the lower cavity wall of the collecting box and the bottom end wall of the shell.

As a further improvement of the above technical solution, the housing is an aluminum housing.

As a further improvement of the above solution, the wall thickness of the bottom end wall of the housing is smaller than the wall thickness of the side wall of the housing.

As a further improvement of the above technical solution, the outer side of the housing is provided with heat dissipation fins, and the heat dissipation fins are fixedly arranged on the side wall of the housing.

The utility model has the advantages that: the utility model provides an explosion-proof capacitor, is to the inside sunken ball lamella form of shell through the bottom end wall that sets up the shell, when the inside atmospheric pressure increase of shell leads to the inflation, because its inflation is a gradual change process, the inside material of shell can extrude to the bottom end wall, receives extruded bottom end wall from inside sunken turn into outside protrusion, for the gas release space of inflation to reduce the emergence of the phenomenon of bursting that leads to because the inside inflation of capacitor.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

FIG. 1 is a front view of the structure of the embodiment of the present invention;

fig. 2 is a schematic view of the sealing plug of the embodiment of the present invention when separated from the vent.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The utility model provides an each technical feature can the interactive combination under the prerequisite of conflict each other.

Referring to fig. 1, this is an embodiment of the invention, specifically:

the utility model provides an explosion-proof capacitor, includes the casing and locates the inside electric capacity core 11 of casing, and the casing includes shell and cap 02, and the shell is the tube-shape of vertical setting, and the opening of shell makes progress, and on the opening of shell was located to cap 02, electric capacity core 11 had anodal lead 13 and negative pole lead 14, and anodal lead 13 and negative pole lead 14 run through cap 02 respectively, and the bottom wall 07 of shell is to the inside sunken ball lamella form of shell. By arranging the bottom end wall 07 of the shell to be in a spherical petal shape recessed towards the interior of the shell, when the shell expands due to the increase of the air pressure in the shell, substances in the shell can be extruded towards the bottom end wall 07 due to the gradual change of the expansion, the extruded bottom end wall 07 is changed from the inward recess to the outward protrusion to release space for expanded air, and therefore the burst phenomenon caused by the expansion in the capacitor is reduced; meanwhile, the positive lead 13 and the negative lead 14 are both arranged at the top of the shell, and when the capacitor of the embodiment is installed, the bottom end wall 07 of the shell can be arranged in the open position, so that the terminal of the capacitor cannot be influenced when the bottom end wall 07 of the shell protrudes outwards, the capacitor slightly expands and can be used continuously, and the inside of the capacitor is the inside of the shell.

Further as a preferred embodiment, a connecting rope 08 is arranged in the housing, a vent hole 09 is arranged on the bottom end wall 07 of the housing, a sealing plug 06 is arranged on the vent hole 09, the sealing plug 06 is positioned at the top of the bottom end wall 07 of the housing, the movable end of the connecting rope 08 is fixedly connected with the sealing plug 06, and the fixed end of the connecting rope 08 is fixedly connected with the side wall 04 of the housing; referring to fig. 2, when the vent hole 09 moves downward to the lowermost side, the distance from the fixed end of the vent hole 09 is greater than the length of the connection cord 08, so that the sealing plug 06 is separated from the vent hole 09. When the degree of expansion of the interior of the housing is great and the bottom end wall 07 of the housing has been fully projected outwardly, a burst condition is likely to occur if the interior of the housing continues to expand; through setting up blow vent 09, sealing plug 06 and connecting rope 08, when bottom end wall 07 of shell has fully outwards protruded, sealing plug 06 is separated with blow vent 09 for the shell is inside can to release pressure through blow vent 09, slowly releases pressure in an orderly manner, prevents the condition of bursting.

Further, as a preferred embodiment, a support plate 05 is provided in the housing in a horizontal direction, the support plate 05 is fixedly connected to the housing, the support plate 05 is provided above the vent 09, the fixed end is provided on the support plate 05, the capacitor core 11 is provided above the support plate 05, a communication port 12 is provided in the support plate 05, and the upper side and the lower side of the support plate 05 are communicated with each other through the communication port 12. The backup pad 05 does not cut off the upside and the downside of backup pad 05 completely, and the upside and the downside of backup pad 05 are the intercommunication, and electric capacity core is placed in backup pad 05 upside like this, and connection rope 08 sets up in the downside of backup pad 05, and connection rope 08 can not touch electric capacity core, prevents that electric capacity core from damaging because of touching of connection rope 08.

Further as a preferred embodiment, a collecting box is arranged on the lower side of the shell, the collecting box is provided with an inner cavity 15, the upper cavity wall of the inner cavity 15 is the bottom end wall 07 of the shell, an atmosphere through hole is arranged on the side cavity wall of the inner cavity 15, and a filtering device 16 is arranged on the atmosphere through hole; when the vent 09 moves down to the lowest, a gap is provided between the lower chamber wall of the collection box and the bottom end wall 07 of the housing. Therefore, the electrolyte flowing out of the vent 09 can be retained in the inner cavity 15 and cannot damage other electronic parts; meanwhile, the filter device 16 can prevent splashed electrolyte droplets from splashing to the outside of the collection box from the atmospheric through-hole; the filter device 16 of this embodiment is filter cotton.

Further in a preferred embodiment, the housing is an aluminum housing. The heat-sinking capability of aluminum hull is better, and the hardness of aluminum hull is less in this embodiment, and the bottom end wall 07 of the shell of being convenient for is from inside sunken to outside protrusion.

Further as a preferred embodiment, the wall thickness of the bottom end wall 07 of the housing is smaller than the wall thickness of the side wall 04 of the housing. The case cover 02 of the housing is generally made stronger than the bottom end wall 07 and the side wall 04 because terminal wires are arranged, so that the capacitor cannot burst from the case cover 02; the wall thickness of the bottom end wall 07 of the shell is smaller than that of the side wall 04 of the shell, so that the bottom end wall 07 of the shell is easier to deform than the side wall 04, and the side wall 04 of the shell can be prevented from deforming and accidentally touching other electronic parts when the shell is expanded.

Further, in a preferred embodiment, the outer side of the housing is provided with heat radiating fins 03, and the heat radiating fins 03 are fixed to the side wall 04 of the housing. On one hand, the heat dissipation fins 03 can accelerate the heat dissipation in the shell; on the other hand, the side wall 04 of the housing can be made structurally stronger, and the deformation of the side wall 04 of the housing when the inside of the housing is expanded can be prevented.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims

1. An explosion-proof capacitor, characterized in that: including the casing with locate the inside electric capacity core of casing, the casing includes shell and cap, the shell is the tube-shape of vertical setting, the opening of shell is upwards, the cap is located on the opening of shell, the electric capacity core has anodal lead wire and negative pole lead wire, anodal lead wire with the negative pole lead wire runs through respectively the cap, the bottom wall of shell is to the inside sunken ball lamella form of shell.

2. An explosion-proof capacitor as set forth in claim 1, wherein: a connecting rope is arranged in the shell, a vent hole is arranged on the bottom end wall of the shell, a sealing plug is arranged on the vent hole, the sealing plug is positioned at the top of the bottom end wall of the shell, the movable end of the connecting rope is fixedly connected with the sealing plug, and the fixed end of the connecting rope is fixedly connected with the side wall of the shell; when the vent hole moves downwards to the lowest part, the distance between the vent hole and the fixed end is larger than the length of the connecting rope, so that the sealing plug is separated from the vent hole.

3. An explosion-proof capacitor as set forth in claim 2, wherein: be equipped with the backup pad of horizontal setting in the shell, the backup pad with the shell rigid coupling, the backup pad is located the upside of blow vent, the stiff end is located in the backup pad, the upside of backup pad is located to the electric capacity core, be equipped with the intercommunication mouth in the backup pad, the upside and the downside of backup pad are through the intercommunication mouth intercommunication.

4. An explosion-proof capacitor as set forth in claim 2, wherein: a collecting box is arranged on the lower side of the shell and provided with an inner cavity, the upper cavity wall of the inner cavity is the bottom end wall of the shell, an atmosphere through hole is formed in the side cavity wall of the inner cavity, and a filtering device is arranged on the atmosphere through hole; when the vent hole moves downwards to the lowest part, a gap is arranged between the lower cavity wall of the collecting box and the bottom end wall of the shell.

5. An explosion-proof capacitor as set forth in claim 1, wherein: the shell is an aluminum shell.

6. An explosion-proof capacitor as set forth in claim 5, wherein: the wall thickness of the bottom end wall of the housing is less than the wall thickness of the side walls of the housing.

7. An explosion-proof capacitor as set forth in claim 1 or 5, characterized in that: and heat radiating fins are arranged on the outer side of the shell and fixedly arranged on the side wall of the shell.