CN211788650U

CN211788650U - Explosion-proof capacitor

Info

Publication number: CN211788650U
Application number: CN202020818680.9U
Authority: CN
Inventors: 蔡昀儒
Original assignee: Zhejiang Jiufang Electric Co ltd
Current assignee: Zhejiang Jiufang Electric Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-10-27
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses an explosion-proof capacitor, it has high-pressure gas's inner shell to fill including shell and inside, shell fixed connection is in the inner shell outside, the internal diameter of shell is less than the external diameter of inner shell to form a cavity that fills there is high-pressure gas, the top run-through connection that the shell is right has the stabilizer blade about central symmetry, the inside condenser that is provided with of inner shell, the top of condenser is provided with the contact about central symmetry. The utility model discloses in, the condenser is at the in-process that the inflation generates heat, the inside high-pressure gas of inner shell increases along with the rising of temperature, until being greater than the inside atmospheric pressure of cavity, the check valve is opened, the steady state between inner shell and the cavity has been broken, inner shell and cavity intercommunication, the volume grow that high-pressure gas filled, thereby lead to the whole pressure reduction of high-pressure gas, the holding power that supports the condenser diminishes, the condenser downstream, stabilizer blade and contact disconnection, the condenser outage makes the inflation explosion terminate, thereby prevent that the explosion of condenser from taking place.

Description

Explosion-proof capacitor

Technical Field

The utility model relates to a condenser technical field especially relates to an explosion-proof capacitor.

Background

The capacitor is an electronic component commonly used in an electronic circuit, the capacitance of the capacitor in the circuit is large, the phenomenon of expansion and even explosion is easy to occur if overload occurs in actual use, and if the capacitor explodes in actual use, the other nearby electronic components are damaged, so the design of the capacitor needs to take the explosion-proof performance into account.

The explosion-proof design of current explosion-proof electric capacity is mainly to set up explosion-proof wire in the condenser, and explosion can not appear after the condenser outage in explosion-proof wire can break off when the condenser overload, however, in practical application, the explosion-proof performance of this kind of form's condenser is not good, the defect that explosion-proof wire just breaks off after the condenser explosion often appears.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems, an explosion-proof capacitor is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an explosion-proof capacitor, includes that shell and inside fill have high-pressure gas's inner shell, shell fixed connection is in the inner shell outside, the internal diameter of shell is less than the external diameter of inner shell to form a cavity that fills and have high-pressure gas, the top through connection that the shell is right has the stabilizer blade about centrosymmetric, the inside condenser that is provided with of inner shell, the top of condenser is provided with the contact about centrosymmetric, the extension end and the contact of stabilizer blade bottom, the through-hole of intercommunication cavity is seted up to inner shell bottom both sides lateral wall, through-hole internally mounted has the check valve.

As a further description of the above technical solution:

the bottom of the outer shell is provided with a first air inlet communicated with the cavity, the bottom of the inner shell is communicated with a second air inlet, and valves are mounted on the first air inlet and the second air inlet.

As a further description of the above technical solution:

and a sealing ring is arranged at the penetrating connection part of the inner shell and the support leg.

As a further description of the above technical solution:

the shell outside is connected and is related to the axial plane symmetry setting and the opposite sliding sleeve of orientation, sliding sleeve bottom arc section inside sliding connection has the arc slide bar, sliding sleeve top vertical end inside closes soon through the screw and is connected with the bolt.

As a further description of the above technical solution:

and the bottom of the bolt is elastically connected with the top of the arc-shaped sliding rod through a torsion spring.

As a further description of the above technical solution:

the mounting plate is arranged on one side of the shell, clamping grooves which are symmetrical up and down about the middle axial plane are formed in the mounting plate, and the extending end of the bottom of the arc-shaped sliding rod is clamped into the clamping grooves.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, the condenser is at the in-process that the inflation generates heat, the inside high-pressure gas of inner shell increases along with the rising of temperature, until being greater than the inside atmospheric pressure of cavity, the check valve is opened, the steady state between inner shell and the cavity has been broken, inner shell and cavity intercommunication, the volume grow that high-pressure gas filled, thereby lead to the whole pressure reduction of high-pressure gas, the holding power that supports the condenser diminishes, the condenser downstream, stabilizer blade and contact disconnection, the condenser outage makes the inflation explosion terminate, thereby prevent that the explosion of condenser from taking place.

2. The utility model discloses in, insert the draw-in groove through the end that extends with two arc slide bar bottoms in, inwards revolve the bolt that closes, the extrusion torsional spring, and then the extrusion arc slide bar sticiss in the draw-in groove, accomplish the erection joint between shell and the mounting panel, secondly, close the bolt through outwards revolving, loosen the torsional spring, and then drive the arc slide bar and break away from the draw-in groove, accomplish the dismantlement between shell and the mounting panel, easy dismounting saves the installation time of condenser, is worth promoting.

Drawings

Fig. 1 is a schematic diagram illustrating an internal structure of a capacitor provided according to an embodiment of the present invention;

fig. 2 shows a schematic top view at a-a provided according to an embodiment of the invention;

fig. 3 shows a schematic connection diagram between the housing and the mounting plate according to an embodiment of the present invention.

Illustration of the drawings:

1. a housing; 101. a first air inlet; 2. an inner shell; 201. a through hole; 202. a second air inlet; 3. a capacitor; 301. a contact; 302. a support leg; 4. a seal ring; 5. a one-way valve; 6. a valve; 7. a slide bar; 8. mounting a plate; 801. a card slot; 9. a sliding sleeve; 10. a bolt; 11. a torsion spring.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an explosion-proof capacitor comprises an outer shell 1 and an inner shell 2 filled with high-pressure gas, wherein the outer shell 1 is fixedly connected to the outer side of the inner shell 2, the inner diameter of the outer shell 1 is smaller than the outer diameter of the inner shell 2 to form a cavity filled with the high-pressure gas, supporting legs 302 which are symmetrical about a center are connected to the top of a pair of the outer shell 1 in a penetrating manner, a capacitor 3 is arranged in the inner shell 2, contacts 301 which are symmetrical about the center are arranged on the top of the capacitor 3, extending ends of the bottoms of the supporting legs 302 are in contact with the contacts 301, the contacts are in electrical contact to ensure the electrical connection, through holes 201 which are communicated with the cavity are formed in the side walls on the two sides of the bottom of the inner shell 2, a check valve 5 is arranged in the through holes 201, the pressure of the high-pressure gas in the inner shell 2 is smaller than the pressure of the, the high-pressure gas floats in the inner shell 2, the supporting legs 302 are in contact with the contacts 301, when the capacitor 3 expands and generates heat, the gas pressure of the high-pressure gas in the inner shell 2 is further increased along with the increase of the temperature until the gas pressure is greater than the gas pressure in the cavity, the one-way valve 5 is opened, the stable state between the inner shell 2 and the cavity is broken, the inner shell 2 is communicated with the cavity, the volume filled with the high-pressure gas is increased, the overall pressure of the high-pressure gas is reduced, the supporting force for supporting the capacitor 3 is reduced, the capacitor 3 moves downwards, the supporting legs 302 are disconnected with the contacts 301, the capacitor 3 is powered off, the expansion explosion is stopped, and the explosion of the capacitor 3 is.

Specifically, as shown in fig. 1, a first air inlet 101 communicated with the cavity is arranged at the bottom of the outer shell 1, a second air inlet 202 is communicated with the bottom of the inner shell 2, high-pressure air is filled into the cavity and the inner shell 2 through the first air inlet 101 and the second air inlet 202, a valve 6 is arranged on the first air inlet 101 and the second air inlet 202 of the inner shell 2, and the valve 6 can control the opening and closing of the first air inlet 101 and the second air inlet 202, so that the air can be filled conveniently, and the high-pressure air can be prevented from overflowing.

Specifically, as shown in fig. 1, a sealing ring 4 is disposed at a penetrating connection between the inner casing 2 and the supporting leg 302, so as to prevent high-pressure gas inside the inner casing 2 from overflowing, which causes an unequal pressure inside the inner casing 2 and an unequal pressure inside the cavity, and causes a situation that the supporting leg 302 and the contact 301 are disconnected under a normal working condition, thereby ensuring a normal use of the capacitor 3.

Specifically, as shown in fig. 2 and 3, a mounting plate 8 is disposed on one side of the housing 1, a slot 801 is disposed on the mounting plate 8 and is vertically symmetrical with respect to the central axis, an extending end of the bottom of the arc-shaped slide rod 7 is clamped into the slot 801, the housing 1 is connected to the mounting plate 8 by clamping the arc-shaped slide rod 7 to the slot 801, so as to complete the installation of the capacitor 3, the bottom of the bolt 10 is elastically connected to the top of the arc-shaped slide rod 7 by a torsion spring 11, on one hand, the torsion spring 11 connects the bolt 10 to the arc-shaped slide rod 7, on the other hand, the arc-shaped slide rod 7 is pressed to slide in the sliding sleeve 9, so that the extending end of the bottom of the arc-shaped slide rod 7 is pressed into the slot 801, the sliding sleeve 9 symmetrically disposed with respect to the central axis and facing opposite directions is connected to, under restriction and supporting role of two opposite arc slide bar 7 of upper and lower segmental arc, guarantee that shell 1 can not be because of gravity roll-off draw-in groove 801, the inside sliding connection of segmental arc in sliding sleeve 9 bottom has arc slide bar 7, sliding sleeve 9 top vertical end is inside to close soon through the screw thread and is connected with bolt 10, close bolt 10 through outwards screwing out bolt 10 or inwards screwing in, drive arc slide bar 7 and slide in sliding sleeve 9, be convenient for arc slide bar 7 business turn over draw-in groove 801, even in the dismouting between shell 1 and the mounting panel 8.

The working principle is as follows: when the capacitor is used, the valve 6 is opened, high-pressure gas is filled into a cavity between the outer shell 1 and the inner shell 2 through the first gas inlet 101, and high-pressure gas is filled into the inner shell 2 through the second gas inlet 202 until the support leg 302 is contacted with the contact 301, namely the capacitor 3 can normally work, so that the gas pressure in the cavity is ensured to be greater than the gas pressure in the inner shell 2, and the one-way valve 5 is closed; when the capacitor 3 expands to generate heat, the temperature inside the inner shell 2 rises, so that the air pressure inside the inner shell 2 rises, the one-way valve 5 is opened, the inner shell 2 is communicated with the cavity, the air filling volume is increased, the integral pressure of air is reduced, the supporting force applied to the bottom of the capacitor 3 is reduced, the capacitor 3 moves downwards, the contact 301 and the support leg 302 are disconnected, the capacitor 3 is powered off, the expansion explosion is stopped, and the explosion of the capacitor 3 is prevented; when dismouting condenser 3, at first, insert draw-in groove 801 with the extension end of two arc slide bar 7 bottoms in, inwards revolve and close bolt 10, extrusion torsional spring 11, and then extrusion arc slide bar 7 sticiss in draw-in groove 801, accomplish the erection joint between shell 1 and the mounting panel 8, secondly, close bolt 10 through outwards revolving, loosen torsional spring 11, and then drive arc slide bar 7 and break away from draw-in groove 801, accomplish the dismantlement between shell 1 and the mounting panel 8, easy dismounting.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an explosion-proof capacitor, includes that shell (1) and inside are filled has high-pressure gas's inner shell (2), its characterized in that, shell (1) fixed connection is in the inner shell (2) outside, the internal diameter of shell (1) is less than the external diameter of inner shell (2) to form a cavity that is filled with high-pressure gas, the top through connection that shell (1) is right has stabilizer blade (302) about the central symmetry, inner shell (2) inside is provided with condenser (3), the top of condenser (3) is provided with contact (301) about the central symmetry, the extension end and the contact (301) contact of stabilizer blade (302) bottom, through-hole (201) of intercommunication cavity are seted up to inner shell (2) bottom both sides lateral wall, through-hole (201) internally mounted has check valve (5).

2. An explosion-proof capacitor as claimed in claim 1, characterized in that the bottom of the outer shell (1) is provided with a first air inlet (101) communicated with the cavity, the bottom of the inner shell (2) is communicated with a second air inlet (202), and the first air inlet (101) and the second air inlet (202) are provided with valves (6).

3. An explosion-proof capacitor as claimed in claim 1, characterized in that the through-connections of the inner housing (2) and the legs (302) are provided with sealing rings (4).

4. An explosion-proof capacitor as claimed in claim 1, characterized in that the outside of the housing (1) is connected with sliding sleeves (9) which are symmetrically arranged with respect to the central axis and face opposite directions, the inside of the arc-shaped section at the bottom of the sliding sleeve (9) is slidably connected with arc-shaped sliding rods (7), and the inside of the vertical end at the top of the sliding sleeve (9) is connected with bolts (10) through screwing.

5. An explosion-proof capacitor as claimed in claim 4, characterized in that the bottom of the bolt (10) is elastically connected with the top of the arc-shaped sliding rod (7) through a torsion spring (11).

6. The explosion-proof capacitor as claimed in claim 4, wherein a mounting plate (8) is arranged at one side of the housing (1), the mounting plate (8) is provided with clamping grooves (801) which are vertically symmetrical about a central axis plane, and the extending end of the bottom of the arc-shaped sliding rod (7) is clamped into the clamping grooves (801).