CN215417883U - Safe explosion-proof film capacitor - Google Patents

Abstract

The utility model discloses a safe and explosion-proof film capacitor, which comprises an explosion-proof cover body, a shell piece and a sealing cover plate, wherein the top of the sealing cover plate is fixedly provided with the explosion-proof cover body, heat dissipation ports are uniformly distributed on the explosion-proof cover body, the sealing cover plate is provided with a mounting sleeve seat extending into the explosion-proof cover body, the shell piece is arranged in the mounting sleeve seat, the shell piece respectively consists of a capacitor core and a leading terminal, the explosion-proof cover plate is arranged between the shell piece and the leading terminal, the port of the mounting sleeve seat is provided with a chemical fiber net cover, and the top of the explosion-proof cover body is provided with a handheld end piece through an explosion-proof heat dissipation piece. The explosion-proof cover body is made of metal materials, and the explosion-proof performance of the capacitor is further expanded through the heat dissipation port, so that the situation that the electric motor bursts during operation is avoided or reduced, the heat dissipation effect can be well achieved, and the normal operation of the capacitor is guaranteed.

Description

Safe explosion-proof film capacitor

Technical Field

The utility model relates to the technical field of capacitors, in particular to a safe and explosion-proof film capacitor.

Background

A Film Capacitor (Film Capacitor) is also called a plastic Film Capacitor. Which uses a plastic film as a dielectric.

The film capacitor is a capacitor having a structure in which a metal foil is used as an electrode, and the metal foil is laminated with a plastic film such as polyethylene, polypropylene, polystyrene, or polycarbonate from both ends thereof, and then wound into a cylindrical shape. The plastic film is also called polyethylene capacitance (also called Mylar capacitance), polypropylene capacitance (also called PP capacitance), polystyrene capacitance (also called PS capacitance) and polycarbonate capacitance, respectively, and the capacitor is a wide variety of capacitors depending on the dielectric, for example: electrolyte capacitors, paper capacitors, thin film capacitors, ceramic capacitors, mica capacitors, air capacitors, and the like. But are most frequently used in audio equipment, as are electrolytic capacitors and Film (Film) capacitors. Electrolytic capacitors are often used in places where a large capacitance is required, such as filter capacitors in the main power supply section, which also serve to store electric energy in addition to filtering. Film capacitors are widely used in places such as the interconnection of analog signals and the bypass (reverse interconnection) of power supply noise, and a film capacitor is known by searching patent publication No. CN208335995U, which is mainly used to reduce the volume ratio of the film capacitor and improve the safety of the film capacitor, but the conventional film capacitor has many problems or defects:

the traditional integral structure is single, when the capacitor is used for a long time, the self strain process is high, or the capacitor is easy to burst due to overload, so that the use operation of the capacitor is influenced, the condition that the operation components of the electrical appliance beside the capacitor are influenced is caused, and the service life of the capacitor is shortened; simultaneously the staff is convenient inadequately during dismantlement and installation, needs to hold the body of condenser between the staff, has reduced the stability of staff during the installation, leads to the staff to receive the injury that the condenser bursts the production easily during with the dismantlement in the installation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a safe and explosion-proof film capacitor to solve the problems of low working efficiency and low practicability in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an explosion-proof film capacitor of safety, includes the explosion-proof cover body, shell spare and sealed apron, the top fixed mounting of sealed apron has the explosion-proof cover body, and evenly distributed has the thermovent on the explosion-proof cover body, install the installation cover seat that extends to the explosion-proof cover body on the sealed apron, and install shell spare in the installation cover seat, shell spare is respectively through the electric capacity core and draws and connect the terminal to form, shell spare with draw and connect and install the explosion-proof cover board between the terminal, the chemical fiber screen panel is installed to the port department of installation cover seat, handheld end piece is installed through explosion-proof heat sink in the top of the explosion-proof cover body.

Preferably, the explosion-proof heat dissipation member is uniformly distributed with heat dissipation holes, and the explosion-proof heat dissipation member is communicated with the explosion-proof cover body.

Preferably, the explosion-proof cover body and the sealing cover plate are welded and fixed through a welding ring.

Preferably, the mounting sleeve seat and the chemical fiber mesh enclosure are fixedly bonded through a thermal sensitive adhesive.

Preferably, an end cover piece is installed on an outer shell piece at the bottom of the explosion-proof cover plate, a fuse is installed in the explosion-proof cover plate in an embedded mode, a connecting hole matched with the connecting wire body is formed in the explosion-proof cover plate, and the fuse is electrically connected with the capacitor core and the leading terminal through the connecting wire body respectively.

Preferably, the inside of the case member is filled with an oil-invading agent layer used in cooperation with the capacitor core.

Compared with the prior art, the utility model has the beneficial effects that: this safe explosion-proof film capacitor is rational in infrastructure, has following advantage:

(1) the explosion-proof cover body is made of metal, and the explosion-proof performance of the capacitor is further expanded through the heat dissipation port, so that the situation that an electric motor bursts during operation is avoided or reduced, meanwhile, the heat dissipation effect can be well played, the situation that the internal heat of the capacitor is too high during long-time operation is also avoided or reduced, the normal operation of the capacitor is ensured, the practical effect of the capacitor is improved, and the service life of the capacitor is prolonged;

(2) the chemical fiber mesh enclosure has the effects that the normal operation and the heat dissipation operation of the capacitor are ensured, and meanwhile, when the capacitor explodes, the chemical fiber mesh enclosure can effectively prevent the residual pieces of the capacitor from splashing in the explosion period;

(3) the handheld end piece is convenient for workers to install and detach the capacitor in a handheld mode, the effect of the handheld end piece is that the condition of directly contacting the capacitor body is avoided, the stability of the workers during installation and detachment is guaranteed, the condition that hands of the workers are damaged during installation and detachment due to explosion of the capacitor is avoided or reduced, and the practical effect of the capacitor is improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a first internal schematic of the present invention;

FIG. 3 is a second internal schematic view of the present invention;

fig. 4 is a schematic view of the internal structure of the housing member of the present invention.

In the figure: 1. a hand-held end piece; 2. an explosion-proof heat sink; 201. heat dissipation holes; 3. an explosion-proof cover body; 301. a heat dissipation port; 4. welding a ring; 5. a chemical fiber net cover; 6. a housing member; 601. an end cap member; 7. installing a sleeve seat; 8. Sealing the cover plate; 9. a lead terminal; 10. an oil invader layer; 11. a capacitor core; 1101. connecting the wire body; 1102. a fuse; 12. an explosion-proof cover plate; 1201. and connecting the holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: a safe and explosion-proof film capacitor comprises an explosion-proof cover body 3, a shell piece 6 and a sealing cover plate 8, wherein a mounting sleeve seat 7 extending into the explosion-proof cover body 3 is installed on the sealing cover plate 8, the shell piece 6 is installed in the mounting sleeve seat 7, the shell piece 6 is respectively composed of a capacitor core 11 and a leading terminal 9, an oil-invading agent layer 10 matched with the capacitor core 11 for use is filled in the shell piece 6, the explosion-proof cover plate 12 is installed between the shell piece 6 and the leading terminal 9, an end cover piece 601 is installed on the shell piece 6 at the bottom of the explosion-proof cover plate 12, a fuse 1102 is embedded in the explosion-proof cover plate 12, a connecting hole 1201 matched with a connecting wire body 1101 is arranged on the explosion-proof cover plate 12, the fuse 1102 is respectively electrically connected with the capacitor core 11 and the leading terminal 9 through the connecting wire body 1101, the capacitor core 11 in the shell piece 6 conducts under the condition that the oil-invading agent layer 10 and the leading terminal 9 are conductive, overload protection is carried out through the fuse 1102 on the connecting wire body 1101, then the overload protection is conducted to the leading terminal 9, and the leading terminal 9 and the corresponding mounting end are used for operation;

specifically, the top fixed mounting of sealed apron 8 has explosion-proof cover body 3, and evenly distributed has thermovent 301 on the explosion-proof cover body 3, through welding collar 4 welded fastening between explosion-proof cover body 3 and the sealed apron 8, and during the condenser production, the staff heats welding collar 4 through welding set, has realized explosion-proof cover body 3 and sealed apron 3 and has heated

The cover plates 8 are fixedly installed, the explosion-proof cover body 3 is made of metal, the explosion-proof performance of the capacitor is further expanded through the heat dissipation port 301, the electric motor is prevented or reduced from bursting during operation, meanwhile, the heat dissipation effect can be well achieved, the situation that the heat inside the capacitor is too high during long-time operation is avoided or reduced, the normal operation of the capacitor is guaranteed, and the practical effect of the capacitor is improved;

specifically, the chemical fiber mesh enclosure 5 is installed at the port of the installation sleeve seat 7, the installation sleeve seat 7 and the chemical fiber mesh enclosure 5 are fixedly bonded through the thermosensitive adhesive, so that convenience of workers during capacitor assembly is guaranteed, meanwhile, the workers can conveniently detach and replace internal components of the capacitor in the later stage, the workers can remove the chemical fiber mesh enclosure 5 only through pulling and cutting, simplicity and convenience are realized, the chemical fiber mesh enclosure 5 has the effects of guaranteeing normal operation and heat dissipation of the capacitor, and meanwhile, when the capacitor explodes, the chemical fiber mesh enclosure 5 can effectively prevent residual pieces of the capacitor from splashing during explosion, the chemical fiber mesh enclosure has the effects of reducing impact force of the capacitor during explosion, achieving good buffering effect, avoiding or reducing impact force of an external shell, and improving stability of the capacitor during operation, the service life is prolonged, the top of the explosion-proof cover body 3 is provided with the handheld end piece 1 through the explosion-proof heat dissipation part 2, the handheld end piece 1 is convenient for workers to install and dismantle the capacitor for handheld operation, the effect of the handheld end piece is that the condition of directly contacting the capacitor body is avoided, the stability of the workers during installation and disassembly is ensured, the condition that the hands are damaged during installation and disassembly due to explosion of the capacitor is avoided or reduced, the practical effect of the capacitor is improved, the heat dissipation holes 201 are uniformly distributed on the explosion-proof heat dissipation part 2, and the communication shape is formed between the explosion-proof heat dissipation part 2 and the explosion-proof cover body 3, the heat dissipation requirement of the capacitor is met by the aid of the effect of the handheld end piece, the inside air circulation of the explosion-proof cover body 3 is better guaranteed, and the integral heat dissipation effect of the capacitor is guaranteed.

The working principle is as follows: when the capacitor is used, the leading terminal 9 on the capacitor and a corresponding circuit component are installed and fixed, during operation, the capacitor core 11 in the shell part 6 conducts operation under the condition of an oil invasion agent layer 10 and conduction, overload protection is carried out through the fuse 1102 on the connecting wire body 1101, then the conduction is conducted to the leading terminal 9, meanwhile, flow-type heat dissipation operation is carried out through the heat dissipation port 301 on the anti-explosion cover body 3 and the heat dissipation holes 201 on the anti-explosion heat dissipation part 2, after long-time use operation, when the capacitor is overloaded or overstrain, explosion occurs, at the moment, the residual sheet generated in explosion is separated and buffered by the chemical fiber mesh enclosure 5 in the capacitor, and the explosion range of the capacitor is finally reduced to the inside by the anti-explosion cover body 3, so that external devices are prevented from being influenced.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. A safe and explosion-proof film capacitor comprises an explosion-proof cover body (3), a shell piece (6) and a sealing cover plate (8), and is characterized in that: the top fixed mounting of sealed apron (8) has the explosion-proof cover body (3), and evenly distributed has thermovent (301) on the explosion-proof cover body (3), install installation cover seat (7) that extend to in the explosion-proof cover body (3) on sealed apron (8), and install shell spare (6) in installation cover seat (7), shell spare (6) connect terminal (9) to constitute through condenser core (11) and drawing respectively, shell spare (6) and drawing connect and install explosion-proof apron (12) between terminal (9), chemical fiber screen panel (5) are installed to the port department of installation cover seat (7), handheld end piece (1) is installed through explosion-proof heat dissipation piece (2) at the top of the explosion-proof cover body (3).

2. A safe explosion-proof film capacitor as set forth in claim 1, wherein: the explosion-proof heat dissipation piece (2) is uniformly distributed with heat dissipation holes (201), and the explosion-proof heat dissipation piece (2) is communicated with the explosion-proof cover body (3).

3. A safe explosion-proof film capacitor as set forth in claim 1, wherein: the explosion-proof cover body (3) and the sealing cover plate (8) are welded and fixed through the welding ring (4).

4. A safe explosion-proof film capacitor as set forth in claim 1, wherein: the mounting sleeve seat (7) and the chemical fiber mesh enclosure (5) are fixedly bonded through thermosensitive adhesive.

5. A safe explosion-proof film capacitor as set forth in claim 1, wherein: install end cover piece (601) on the outer shell spare (6) of explosion-proof apron (12) bottom, the inside embedded fuse (1102) of installing of explosion-proof apron (12), and be equipped with on explosion-proof apron (12) with connecting line body (1101) complex connecting hole (1201), fuse (1102) are respectively through connecting line body (1101) and condenser core (11) and draw and connect terminal (9) electric connection.

6. A safe explosion-proof film capacitor as set forth in claim 1, wherein: the inside of the shell piece (6) is filled with an oil-invasion agent layer (10) matched with the capacitor core (11).

Images