Explosion-proof structure of passive filter capacitor

Abstract

The utility model discloses an explosion-proof structure of a passive filter capacitor, comprising an explosion-proof housing and a capacitor body, the bottom of the explosion-proof housing is provided with a plurality of arc-shaped limiting abutting sheets, the capacitor body is inserted in the explosion-proof housing and abuts against the plurality of arc-shaped limiting abutting sheets, and the annular inner wall of the explosion-proof housing close to the upper end is provided with an annular sealing projection. The capacitor body is fixedly sleeved with the annular sealing protrusion, and a reinforcing assembly is arranged on the annular side wall, close to the upper end, of the anti-explosion shell. According to the utility model, the structure stability of the explosion-proof shell is improved and the safety performance of the explosion-proof shell and the capacitor body is ensured through the arc-shaped limiting abutting sheets, the annular fixing blocks and the arc-shaped reinforcing sheets which are made of aluminum-chromium alloy materials, and heat generated by the capacitor body is conveniently and rapidly discharged through the plurality of heat dissipation holes distributed between the two arc-shaped reinforcing sheets, so that the service life of the capacitor body is prolonged. And the arc-shaped dustproof valves in the plurality of heat dissipation holes provide dustproof protection for the capacitor body, so that the normal operation of the capacitor body is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to passive filter capacitor technology field especially relates to a passive filter capacitor's explosion -proof structure. BACKGROUND

[0002] Passive filter is a kind of measure that harmonic current generated by harmonic source is absorbed by power filter device nearby to inhibit harmonic pollution, usually filter by passive filter device that is properly combined by filter capacitor and filter reactor, filter capacitor is usually installed at both ends of rectifier circuit to reduce AC ripple wave coefficient to promote high -efficient smooth DC output.

[0003] The existing passive filter capacitor is installed at both ends of rectifier circuit, and the structural stability of the explosion -proof housing is poor, and a large amount of heat is generated when current passes through for a long time, which affects the service life of the passive filter capacitor, and the explosion -proof structure of the passive filter capacitor is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies and defects in the prior art, the utility model provides an explosion -proof structure of passive filter capacitor to solve the technical problems that the existing passive filter capacitor in the background art is installed at both ends of rectifier circuit, the structural stability of the explosion -proof housing is poor, and a large amount of heat is generated when current passes through for a long time, which affects the service life of the passive filter capacitor.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An explosion -proof structure of passive filter capacitor, including explosion -proof housing and capacitor body, the bottom of explosion -proof housing is equipped with a plurality of arc limiting resistance pieces, the capacitor body is inserted in explosion -proof housing and is pressed tightly with a plurality of arc limiting resistance pieces, the annular inner wall of the explosion -proof housing close to the upper end is equipped with annular sealing protrusion, the annular sealing protrusion is fixedly sleeved with capacitor body, the annular side wall of the explosion -proof housing close to the upper end is equipped with reinforcing assembly, the reinforcing assembly is fixedly connected with the explosion -proof housing, the annular inner wall of the explosion -proof housing close to annular sealing protrusion is equipped with a plurality of heat dissipation holes.

[0007] Preferably, the annular side wall of the capacitor body is pressed tightly with the arc-shaped inner wall of the plurality of arc-shaped limiting resistance pieces, the arc-shaped limiting resistance pieces and the annular sealing protrusion are integrally formed with the explosion -proof housing, and the plurality of arc-shaped limiting resistance pieces are distributed in a cross shape.

[0008] Preferably, the reinforcing assembly comprises an annular fixing block fixedly connected to the explosion-proof shell near the upper end annular side wall, the lower end of the annular fixing block is provided with two arc-shaped reinforcing pieces, the two arc-shaped reinforcing pieces are symmetrically arranged, the lower ends of the two arc-shaped reinforcing pieces are seamlessly connected to the lower end of the explosion-proof shell, the arc-shaped inner walls of the two arc-shaped reinforcing pieces are seamlessly connected to the annular side wall of the explosion-proof shell, and a plurality of heat dissipation holes are arranged between the two arc-shaped reinforcing pieces.

[0009] Preferably, the explosion-proof shell, the arc-shaped limiting resisting piece, the annular sealing protrusion, the annular fixing block and the arc-shaped reinforcing piece are made of aluminum-chromium alloy.

[0010] Preferably, the annular inner walls of the plurality of heat dissipation holes are fixedly connected with two arc-shaped dust valves which are symmetrically arranged, the plurality of arc-shaped dust valves are arranged close to the annular inner wall of the explosion-proof shell, and the inclined ends of the two arc-shaped dust valves are directed to the outer side of the heat dissipation hole.

[0011] Preferably, the arc-shaped dust valve is made of corrosion-resistant rubber.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. The arc-shaped limiting resisting piece, the annular fixing block and the arc-shaped reinforcing piece made of aluminum-chromium alloy improve the structural stability of the explosion-proof shell and ensure the safety performance of the explosion-proof shell and the capacitor body.

[0014] 2. The plurality of heat dissipation holes arranged between the two arc-shaped reinforcing pieces facilitate rapid discharge of heat generated by the capacitor body, and the arc-shaped dust valves in the heat dissipation holes provide dustproof protection for the capacitor body, thereby ensuring normal operation of the capacitor body. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the explosion-proof structure of the passive filter capacitor proposed in the utility model;

[0016] Figure 2 It is a sectional view schematic view of the explosion-proof structure of the passive filter capacitor proposed in the utility model;

[0017] Figure 3 It is Figure 2 It is a local enlarged view of A in the middle;

[0018] Figure 4 It is Figure 1 It is a local enlarged view of B in the middle.

[0019] In the drawing: 1 is an explosion-proof shell, 2 is a capacitor body, 3 is an arc-shaped limiting resisting piece, 4 is an annular sealing protrusion, 5 is a heat dissipation hole, 6 is an annular fixing block, 7 is an arc-shaped reinforcing piece, and 8 is an arc-shaped dust valve. DETAILED DESCRIPTION

[0020] In the description of the utility model, it needs to understand that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] Reference Figures 1-4 A kind of passive filter capacitor's explosion-proof structure, including explosion-proof shell 1 and capacitor body 2, several arc-shaped limit resistance pieces 3 are equipped on the bottom of explosion-proof shell 1, capacitor body 2 is inserted in explosion-proof shell 1 and is pressed against with several arc-shaped limit resistance pieces 3, the annular side wall of capacitor body 2 is pressed against with the arc-shaped inner wall of several arc-shaped limit resistance pieces 3, arc-shaped limit resistance piece 3 and annular sealing protrusion 4 are integrally formed with explosion-proof shell 1, several arc-shaped limit resistance pieces 3 are distributed and arranged in cross type, capacitor body 2 is inserted in explosion-proof shell 1 and is pressed against with the cross type distribution of several arc-shaped limit resistance pieces 3, effectively limit capacitor body 2 in explosion-proof shell 1, and make capacitor body 2 and explosion-proof shell 1 have gap, facilitate and quickly discharge heat generated by capacitor body 2 through heat dissipation hole 5.

[0023] Annular sealing protrusion 4 is equipped on the annular inner wall of explosion-proof shell 1 close to upper end, annular sealing protrusion 4 is fixedly sleeved capacitor body 2 and is arranged, reinforcing assembly is equipped on the annular side wall of explosion-proof shell 1 close to upper end, and reinforcing assembly includes annular fixed block 6 fixedly connected on the annular side wall of explosion-proof shell 1 close to upper end, the lower end of annular fixed block 6 is equipped with two arc-shaped reinforcing pieces 7, two arc-shaped reinforcing pieces 7 are symmetrically distributed and arranged, the lower end of two arc-shaped reinforcing pieces 7 is seamlessly connected with the lower end of explosion-proof shell 1, the arc-shaped inner wall of two arc-shaped reinforcing pieces 7 is seamlessly connected with the annular side wall of explosion-proof shell 1, several heat dissipation holes 5 are distributed between two arc-shaped reinforcing pieces 7, the material of explosion-proof shell 1, arc-shaped limit resistance piece 3, annular sealing protrusion 4, annular fixed block 6 and arc-shaped reinforcing piece 7 is all aluminum-chromium alloy, and the arc-shaped limit resistance piece 3 of aluminum-chromium alloy material cooperates with the annular fixed block 6 and arc-shaped reinforcing piece 7 of aluminum-chromium alloy material, to improve the structural stability of explosion-proof shell 1, and ensure the safety performance of explosion-proof shell 1 and capacitor body 2.

[0024] The reinforcing assembly is fixedly connected with the explosion-proof shell 1, the explosion-proof shell 1 is provided with a plurality of heat dissipation holes 5 on the annular inner wall close to the annular sealing protrusion 4, the annular inner wall of the plurality of heat dissipation holes 5 is fixedly connected with two arc-shaped dust flaps 8 which are symmetrically distributed, the plurality of arc-shaped dust flaps 8 are all arranged close to the annular inner wall of the explosion-proof shell 1, the inclined ends of the two arc-shaped dust flaps 8 are both directed to the outer side of the heat dissipation hole 5, the material of the arc-shaped dust flap 8 is corrosion-resistant rubber, the heat generated by the capacitor body 2 can be quickly discharged through the plurality of heat dissipation holes 5 distributed between the two arc-shaped reinforcing pieces 7, and the arc-shaped dust flap 8 in the heat dissipation hole 5 provides dust protection for the capacitor body 2, so that the normal operation of the capacitor body 2 is ensured.

[0025] In the utility model, the annular fixed block 6 is fixedly connected on the annular side wall of the explosion-proof shell 1 close to the upper end, and the two arc-shaped reinforcing pieces 7 at the lower end of the annular fixed block 6 are fixed on the annular side wall of the explosion-proof shell 1, so that the lower ends of the two arc-shaped reinforcing pieces 7 are seamlessly connected with the lower end of the explosion-proof shell 1, so that the arc-shaped limiting stop piece 3 made of aluminum-chromium alloy cooperates with the annular fixed block 6 and the arc-shaped reinforcing piece 7 made of aluminum-chromium alloy, the structural stability of the explosion-proof shell 1 is improved, the safety performance of the explosion-proof shell 1 and the capacitor body 2 is ensured, the heat generated by the capacitor body 2 can be quickly discharged through the plurality of heat dissipation holes 5 distributed between the two arc-shaped reinforcing pieces 7, and the arc-shaped dust flap 8 in the heat dissipation hole 5 provides dust protection for the capacitor body 2, so that the normal operation of the capacitor body 2 is ensured.

[0026] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. An explosion-proof structure of a passive filter capacitor, comprising an explosion-proof housing (1) and a capacitor body (2), characterized in that, The bottom of the explosion-proof shell (1) is provided with a plurality of arc-shaped limiting abutting pieces (3), the capacitor body (2) is inserted into the explosion-proof shell (1) and is pressed against the plurality of arc-shaped limiting abutting pieces (3), the annular inner wall of the explosion-proof shell (1) near the upper end is provided with an annular sealing protrusion (4), the annular sealing protrusion (4) is fixedly sleeved with the capacitor body (2), the annular side wall of the explosion-proof shell (1) near the upper end is provided with a reinforcing assembly, the reinforcing assembly is fixedly connected with the explosion-proof shell (1), and the annular inner wall of the explosion-proof shell (1) near the annular sealing protrusion (4) is provided with a plurality of heat dissipation holes (5).

2. The explosion-proof structure of a passive filter capacitor according to claim 1, characterized in that, The annular side wall of the capacitor body (2) is pressed against the arc-shaped inner wall of the plurality of arc-shaped limiting abutting pieces (3), the arc-shaped limiting abutting pieces (3) and the annular sealing protrusion (4) are integrally formed with the explosion-proof shell (1), and the plurality of arc-shaped limiting abutting pieces (3) are cross-shapedly distributed.

3. The explosion-proof structure of a passive filter capacitor according to claim 1, wherein The reinforcing assembly comprises an annular fixed block (6) fixedly connected to the annular side wall of the explosion-proof shell (1) near the upper end, two arc-shaped reinforcing pieces (7) are arranged on the lower end of the annular fixed block (6), the two arc-shaped reinforcing pieces (7) are symmetrically arranged, the lower ends of the two arc-shaped reinforcing pieces (7) are seamlessly connected with the lower end of the explosion-proof shell (1), the arc-shaped inner walls of the two arc-shaped reinforcing pieces (7) are seamlessly connected with the annular side wall of the explosion-proof shell (1), and the plurality of heat dissipation holes (5) are arranged between the two arc-shaped reinforcing pieces (7).

4. The explosion-proof structure of a passive filter capacitor according to claim 3, wherein The explosion-proof shell (1), the arc-shaped limiting abutting piece (3), the annular sealing protrusion (4), the annular fixed block (6) and the arc-shaped reinforcing piece (7) are all made of aluminum-chromium alloy.

5. The explosion-proof structure of a passive filter capacitor according to claim 1, wherein The annular inner wall of the plurality of heat dissipation holes (5) is fixedly connected with two symmetrically arranged arc-shaped dust valves (8), the plurality of arc-shaped dust valves (8) are arranged close to the annular inner wall of the explosion-proof shell (1), and the inclined ends of the two arc-shaped dust valves (8) are directed to the outer side of the heat dissipation hole (5).

6. The explosion-proof structure of a passive filter capacitor according to claim 5, wherein The arc-shaped dust valve (8) is made of corrosion-resistant rubber.

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