CN210467605U

CN210467605U - Novel safe explosion-proof capacitor

Info

Publication number: CN210467605U
Application number: CN201922092993.0U
Authority: CN
Inventors: 吴俭鸿
Original assignee: Foshan Shunde Hongye Electronic Co ltd
Current assignee: Foshan Shunde Hongye Electronic Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-05-05
Anticipated expiration: 2029-11-28

Abstract

The utility model provides a novel safe explosion-proof capacitor, which belongs to the technical field of capacitors and comprises an outer shell, wherein the outer shell is divided into a capacitance layer and a buffer layer, the buffer layer is positioned above the capacitance layer, the inner shell is arranged inside the capacitance layer, two electrode plates are arranged inside the inner shell, the two electrode plates are respectively connected with an anode pin and a cathode pin, and the anode pin and the cathode pin extend to the outside of the outer shell for connecting a circuit, the wall thickness above the inner shell is less than the wall thickness of the whole body of the inner shell, the bottom of the buffer layer is attached to the upper part of the inner shell, and at least two intercepting pieces are arranged; because the special construction of inner shell for when the condenser explodes, the impact force of its production bursts above the inner shell in addition at first, and the impact force of bursting formation carries out the deformation energy-absorbing by the buffer layer, and the piece that bursts the production also is intercepted by the buffer layer, compares in current condenser, the utility model discloses can fall to minimum with the harm that the condenser explosion caused.

Description

Novel safe explosion-proof capacitor

Technical Field

The utility model belongs to the technical field of the condenser, concretely relates to novel safe explosion-proof condenser.

Background

Two conductors close to each other with a layer of non-conductive insulating medium in between constitute the capacitor. When a voltage is applied across the two plates of the capacitor, the capacitor stores charge. The capacitance of the capacitor is numerically equal 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 a capacitor is farad (F). The capacitor element is generally denoted by letter C in the circuit diagram.

There are generally two situations in which a capacitor explodes: firstly, the capacitor bears too high voltage, which causes the capacitor to break down and increase the capacitance rapidly, and finally causes the electrolyte to vaporize and expand rapidly to break the shell to explode. Secondly, the temperature of the capacitor is too high, and the electrolyte in the capacitor boils to generate a large amount of gas to burst the shell, so that explosion is caused. To prevent capacitor explosion, it is checked before the capacitor is energized whether the voltage exceeds the nominal maximum voltage of the capacitor and whether the positive and negative electrodes are connected in reverse.

With current technique, be difficult to absolutely stop the emergence of condenser explosion, can only improve on the structure of condenser, reduce its probability that produces the explosion and reduce the harm that its explosion caused, propose for this the utility model discloses the application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel safe explosion-proof condenser aims at solving the condenser among the prior art and causes the problem of personal and property harm when exploding easily.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel safe explosion-proof capacitor, includes the shell, and the shell divide into electric capacity layer and buffer layer, and the buffer layer is located the top on electric capacity layer, the inside on electric capacity layer is equipped with the inner shell, and the internally mounted of inner shell has two plate electrodes, and two plate electrodes are connected with positive pole pin and negative pole pin respectively and just positive pole pin and negative pole pin extend to the outside of shell and are used for connecting circuit, the wall thickness of inner shell top wall is less than the wall thickness of inner shell whole body, and the bottom and the laminating of inner shell top of buffer layer are equipped with the interception piece that is two at least in the buffer layer, and the interception piece divides.

In order to make the condenser safer, as the utility model relates to an it is preferred, inside by the interval of interception piece detached equal even packing of buffer layer has netted filler, and netted filler can intercept the fragment that the condenser explosion produced, avoids the fragment to splash everywhere, causes harm.

In order to make and cushion the energy-absorbing to the inner shell inflation, as the utility model relates to an it is preferred, the space packing between shell and the inner shell has cellular buffering body, and cellular buffering body is not through playing the structure supporting role, when the inside explosion that takes place of inner shell, can cushion the effect of energy-absorbing to the inner shell inflation.

In order to make the buffering body buffering effect better, as the utility model relates to an it is preferred, the cellular buffering body is aluminium system material, and the cellular buffering body of aluminium system material takes place to warp the energy-absorbing easily when receiving the impact force that the explosion produced, the upper surface undercut of buffer layer forms the roof, and the roof is sunken to be the radius and is less than the radial cylindrical recess of shell, and the roof can gain the effect of buffering energy-absorbing to a certain extent, and its cylindrical recess result can also play the marking effect.

In order to make the condenser use safelyr, as the utility model relates to an it is preferred, the top of inner shell is arc top shape structure, and when the inside explosion that takes place of inner shell, the inner shell of arc top shape structure can guide the explosion to the top impact. And the unidirectional resistors are arranged on the anode pin and the cathode pin, and the direction of current passing allowed by the unidirectional resistors is the same as the designed direction of current passing of the anode pin and the cathode pin.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses can guide to the buffer layer to the direction that the in situ explosion of electric capacity was strikeed when the condenser explodes, be equipped with the multilayer interception piece in the buffer layer to fill netted filler in the inside of buffer layer. When explosion happens, the impact force generated by the explosion on the whole body is partially absorbed by the honeycomb-shaped buffer body, the wall thickness above the inner shell is smaller than that of the whole body, the impact force generated by the explosion is mainly concentrated above the inner shell, and fragments wrapped by the impact force are respectively and gradually reduced by the interception of the reticular filler and the interception piece. The top plate above the buffer layer deforms when being subjected to impact force generated by explosion, so that the purposes of buffering and energy absorption are achieved. To comparing in traditional condenser, the utility model discloses can prevent that the explosion from producing the piece and sputtering and cause harm to life and property safety.

2. One reason for the capacitor to explode is because the operator, when installing the capacitor, connects the anode and cathode pins of the capacitor back to the circuit lines. In order to reduce the occurrence of the situation, unidirectional resistors are respectively arranged on the anode pin and the cathode pin, and the unidirectional resistors on the anode pin and the cathode pin allow the current to flow in the same direction as the designed current flowing direction of the anode pin and the cathode pin. Even if the capacitor is connected to the circuit in a wrong way by mistake of an operator, a complete closed loop cannot be formed between the capacitor and the circuit, and then explosion cannot occur, so that the aim of safety and explosion prevention is fulfilled.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a perspective view of the present invention;

fig. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 4 is a schematic structural diagram of embodiment 3 of the present invention;

in the figure: 1-a capacitive layer; 2-a buffer layer; 3-a cathode pin; 4-anode pin; 5-one-way resistance; 6-a top plate; 7-inner shell; 8-an electrode plate; 9-honeycomb buffer body; 10-mesh filler; 11-intercepting piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-2, the present invention provides the following technical solutions:

the utility model relates to a novel safe explosion-proof capacitor, the main part is a columniform protecting sheathing, two parts about it mainly divide into, and upper portion is buffer layer 2, and the lower part is electric capacity layer 1, installs in the buffer layer 2 at least for two-layer interception piece 11. The capacitor layer 1 is internally provided with a cylindrical inner shell 7, the inner shell 7 is internally provided with two electrode plates 8 correspondingly, and the electrode plates 8 in the figure 1 are distributed in a central symmetry manner. The two electrode plates 8 are respectively connected with a cathode pin 3 and an anode pin 4, and the cathode pin 3 and the anode pin 4 are respectively connected with a circuit. In order to cause the impact force of the capacitor to be introduced to the buffer layer 2 when the capacitor is exploded, the upper surface wall thickness of the inner case 7 is designed to be thinner than that of the periphery of the inner case 7, and preferably, a dome-shaped structure is used. When the capacitor is exploded due to factors such as overvoltage or overhigh temperature, shock waves generated by explosion of the inner shell 7 mainly face upwards, fragments generated by explosion splash into the buffer layer 2, the fragments are blocked by the blocking pieces 11, and a certain gap is formed between the blocking pieces 11 and used for buffering energy of the fragments. And the impact that the explosion caused the inner shell 7 whole body carries out certain slowing down by the gap between inner shell 7 and the shell, avoids the fragment to splash away from this, causes harm.

Specifically, the gaps between the intercepting pieces 11 and the intercepting pieces 11 are filled with the mesh-shaped filler 10, and the mesh-shaped filler 10 can serve as a buffer function and can form an intercepting net to intercept fine fragments.

Specifically, the top plate 6 is arranged on the upper surface of the buffer area, the inward concave top plate 6 can block the impacted uppermost interception piece 11, and the upward concave interception piece can deform to absorb energy when impacted, so that the impact of explosion on the outside of the capacitor is reduced in sequence.

Example 2

Referring to fig. 3, the present invention provides the following technical solutions:

the embodiment is different from the embodiment 1 in that a honeycomb-shaped buffer body 9 is installed in a gap between an inner shell 7 and an outer shell of a capacitor layer 1 in the embodiment, the honeycomb-shaped buffer body 9 is made of a honeycomb-shaped metal material, the wall surface of the honeycomb-shaped buffer body is perpendicular to the central axis of the inner shell 7, a hexagonal honeycomb-shaped hole of a single honeycomb-shaped buffer body 9 forms a circular ring shape, when a capacitor explodes, the inner shell 7 expanded by the honeycomb-shaped buffer body 9 is impacted and compressed to deform, so that the effect of deformation energy absorption is achieved, and the honeycomb-shaped buffer body 9 can intercept fragments generated by explosion.

Example 3

Referring to fig. 4, the present invention provides the following technical solutions:

in the embodiment, on the basis of the embodiment 1 and/or the embodiment 2, the unidirectional resistors 5 are respectively arranged on the anode pin 4 and the cathode pin 3, and the direction of the unidirectional resistors 5 allowing the current to flow in is the same as the direction of the current flowing in the anode pin 4 and the cathode pin 3. Even if the capacitor is connected to the circuit in a wrong way by mistake of an operator, a complete closed loop cannot be formed between the capacitor and the circuit, and then explosion cannot occur, so that the aim of safety and explosion prevention is fulfilled.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel safe explosion-proof capacitor which characterized in that: including the shell, the shell divide into electric capacity layer (1) and buffer layer (2), buffer layer (2) are located the top on electric capacity layer (1), the inside on electric capacity layer (1) is equipped with inner shell (7), the internally mounted of inner shell (7) has two electrode plates (8), and two electrode plates (8) are connected with positive pole pin (4) and negative pole pin (3) respectively and just positive pole pin (4) and negative pole pin (3) extend to the outside of shell and are used for connecting circuit, inner shell (7) top wall thickness is less than the wall thickness of inner shell (7) whole body, the bottom and the laminating of inner shell (7) top of buffer layer (2), be equipped with in buffer layer (2) and be two piece at least interception piece (11), interception piece (11) divide into buffer layer (2) at least for three difference interval.

2. The novel safe explosion-proof capacitor as claimed in claim 1, wherein: the intervals separated by the interception pieces (11) in the buffer layer (2) are uniformly filled with reticular fillers (10).

3. The novel safe explosion-proof capacitor as claimed in claim 1, wherein: and a honeycomb-shaped buffer body (9) is filled in a gap between the outer shell and the inner shell (7).

4. A novel safety explosion-proof capacitor as claimed in claim 3, wherein: the honeycomb-shaped buffer body (9) is made of aluminum.

5. The novel safe explosion-proof capacitor as claimed in claim 1, wherein: the upper part of the inner shell (7) is of an arc top-shaped structure.

6. The novel safe explosion-proof capacitor as claimed in claim 1, wherein: the upper surface undercut of buffer layer (2) forms roof (6), roof (6) are sunken to be the radial cylindrical recess that is less than the shell radius.

7. A novel safety explosion-proof capacitor as claimed in any one of claims 1 to 6, wherein: and the anode pin (4) and the cathode pin (3) are both provided with a one-way resistor (5), and the direction of the one-way resistor (5) allowing current to be introduced is the same as the direction of the anode pin (4) and the cathode pin (3) in which the current is designed to be introduced.