CN217507024U

CN217507024U - Arrester with explosion-proof function

Info

Publication number: CN217507024U
Application number: CN202221142404.0U
Authority: CN
Inventors: 刘玉彬
Original assignee: Xiangyang Xiangxiang Arrester Co ltd
Current assignee: Xiangyang Xiangxiang Arrester Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-09-27
Anticipated expiration: 2032-05-11

Abstract

The utility model relates to an arrester with explosion-proof function, which comprises an arrester shell, an arrester core body, a pressure relief stop block and an elastic piece; the lightning arrester comprises a lightning arrester shell, a lightning arrester core body, a pressure relief gap and a pressure relief cavity, wherein the lightning arrester core body is fixedly arranged in the mounting cavity, the pressure relief gap is formed on the outer side of the lightning arrester core body, and the pressure relief cavity is communicated with the pressure relief gap; pressure release dog and elastic component set gradually in the pressure release chamber, and wherein, pressure release dog and the chamber wall sliding connection in pressure release chamber, the both ends of elastic component offset at the bottom of pressure release dog and the chamber in pressure release chamber respectively, and the pressure release hole of a plurality of and pressure release chamber intercommunication is seted up at the position that corresponds the pressure release dog to the arrester casing. Compared with the prior art, the utility model provides a pressure release structure that comprises pressure release clearance, pressure release chamber, pressure release dog and elastic component that the arrester is inside to be set up can carry out the pressure release when the arrester core body explodes to can prevent that the casing of arrester from breaking because of taking place, and bring the potential safety hazard.

Description

Arrester with explosion-proof function

Technical Field

The utility model relates to an arrester technical field especially relates to an arrester with explosion-proof function.

Background

The arrester is a common electrical appliance for protecting electrical equipment from high transient overvoltage, is widely applied to the fields of power distribution systems, power plants, transformer substations and the like, and has a specific structure referring to the arrester for inhibiting flashover of a resistor disc disclosed in patent No. cn202121223709.

Although the lightning arrester can inhibit the flashover of the resistor disc, the lightning arrester has certain potential hazards in the use process, namely, the lightning arrester can cause explosion due to faults such as short circuit and the like in the use process, so that the shell of the lightning arrester is broken, and further potential safety hazards are brought.

Therefore, an arrester with an explosion-proof function is urgently needed to solve the problem that the existing arrester has potential safety hazards.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for an arrester with an explosion-proof function to solve the problem of potential safety hazard existing in the conventional arrester.

The utility model provides a lightning arrester with explosion-proof function, which comprises a lightning arrester casing, a lightning arrester core body, a pressure relief stop block and an elastic piece;

the lightning arrester comprises a lightning arrester shell, a lightning arrester core body and a pressure relief gap, wherein the lightning arrester core body is fixedly arranged in the mounting cavity, the pressure relief gap is formed on the outer side of the lightning arrester core body, and the pressure relief cavity communicated with the pressure relief gap is formed at the bottom of the lightning arrester core body;

the lightning arrester comprises a pressure relief cavity, a pressure relief stop block, an elastic piece, a pressure relief hole, a plurality of lightning arrester casing and a plurality of lightning arrester casing, wherein the pressure relief stop block and the elastic piece are sequentially arranged in the pressure relief cavity, the pressure relief stop block is in sliding connection with the cavity wall of the pressure relief cavity, two ends of the elastic piece are respectively abutted against the bottom of the pressure relief stop block and the cavity bottom of the pressure relief cavity, and the lightning arrester casing is provided with a plurality of pressure relief holes communicated with the pressure relief cavity in a position corresponding to the pressure relief stop block.

Furthermore, a plurality of pressure relief grooves which are not completely penetrated are formed in the insulating sheath of the lightning arrester core body.

Further, the lightning arrester shell is a ceramic shell.

Further, the elastic member is a compression spring.

Further, a plurality of skirt-shaped protrusions are formed on the exterior of the arrester housing in a longitudinal direction.

Further, the arrester with the explosion-proof function still includes the elastic sealing ring, the elastic sealing ring set up in the installation cavity, and be located the arrester core with between the pressure release dog.

Further, the elastic sealing ring is a rubber sealing ring.

Further, the lightning arrester core body comprises a first conductive bolt, a second conductive bolt, a first electrode, a second electrode, a plurality of valve plates and an insulating sheath;

first conductive bolt, first electrode, a plurality of valve block, second electrode and second conductive bolt in proper order fixed set up in the insulating sheath, wherein, first conductive bolt's one end in first electrode fixed connection, first conductive bolt's the other end by the top of arrester casing extends to the outside, second conductive bolt's one end with second electrode fixed connection, second conductive bolt's the other end by the bottom of arrester casing extends to the outside, pressure release dog and elastic component all overlap and locate the outside of second conductive bolt.

Furthermore, the valve plate is a zinc oxide valve plate.

Further, the insulating sheath is a Duliton insulating sheath.

Compared with the prior art, the utility model provides a lightning arrester with explosion-proof function's beneficial effect does:

this inside pressure release structure who sets up of arrester by the pressure release clearance, the pressure release chamber, pressure release dog and elastic component are constituteed can be when the arrester core body explodes, carry out the pressure release (when the arrester core body explodes, the gaseous of violent inflation can enter into the pressure release chamber through the pressure release clearance because of the explosion, and promote the pressure release dog and slide to the bottom in pressure release chamber, slide when the pressure release slider to exposing the pressure release hole, gaseous just can be discharged by pressure release hole department), thereby can prevent the casing of arrester because of taking place to break, and bring the potential safety hazard.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the arrester with explosion-proof function provided by the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is the schematic structural diagram of a preferred embodiment of the lightning arrester core in the lightning arrester with explosion-proof function provided by the utility model.

Detailed Description

The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.

Referring to fig. 1 to 3, the present invention provides an arrester with explosion-proof function, which includes an arrester housing 1, an arrester core 2, a pressure relief block 3 and an elastic member 4.

A columnar installation cavity is formed in the lightning arrester shell 1, the lightning arrester core body 2 is fixedly arranged in the installation cavity, a pressure relief gap 1a is formed on the outer side of the lightning arrester core body, and a pressure relief cavity 1b communicated with the pressure relief gap 1a is formed at the bottom of the lightning arrester core body. Pressure release dog 3 and elastic component 4 set gradually in the pressure release chamber 1b, wherein, pressure release dog 3 with the chamber wall sliding connection in pressure release chamber 1b, arrester casing 1 is corresponding pressure release dog 3's position seted up a plurality of with the pressure release hole 1c of pressure release chamber 1b intercommunication, elastic component 4 set up in pressure release dog 3's bottom, just elastic component 4's both ends respectively with pressure release dog 3's bottom with offset at the bottom of pressure release chamber 1 b's the chamber, with under the normality, make pressure release dog 3 will pressure release hole 1c blocks (in order to guarantee the sealed effect of arrester core 2).

When the arrester core body 2 explodes, the gas violently expanding due to the explosion enters the pressure relief cavity 1b through the pressure relief gap 1a, and pushes the pressure relief stop 3 to slide towards the bottom of the pressure relief cavity 1b, and when the pressure relief slide block slides to expose the pressure relief hole 1c, the gas is discharged from the pressure relief hole 1c, so that the arrester shell body 1 can be prevented from being broken, and potential safety hazards are brought.

With reference to fig. 1, as a preferred embodiment, the insulating sheath 21 of the core body 2 of the arrester is provided with a plurality of pressure relief grooves 21a that do not completely penetrate through the insulating sheath, and the pressure relief grooves 21a can ensure the sealing and insulating effects of the insulating sheath 21 and enhance the pressure relief effect of the insulating sheath 21 (i.e. the gas expanded due to explosion can more easily enter the pressure relief gap 1a from the pressure relief grooves 21 a), so as to reduce the damage to the internal structure of the core body 2 caused by explosion.

In a more specific embodiment, the arrester housing 1 is a ceramic housing.

In a more specific embodiment, the elastic member 4 is a compression spring.

Referring to fig. 1, as a preferred embodiment, a plurality of skirt-shaped protrusions 11 are formed on the exterior of the arrester housing 1 along the length direction, and the skirt-shaped protrusions 11 can enhance the heat dissipation effect of the arrester housing 1.

Referring to fig. 2, as a preferred embodiment, the arrester with an explosion-proof function further includes an elastic sealing ring 5, the elastic sealing ring 5 is disposed in the installation cavity and located between the arrester core body 2 and the pressure relief stopper 3, and the elastic sealing ring 5 can be elastically deformed under the elastic force of the elastic member 4 and seal the bottom of the pressure relief gap 1a, so that the sealing effect of the arrester core body 2 by the arrester housing 1 can be increased.

In a more specific embodiment, the elastic sealing ring 5 is a rubber sealing ring.

Referring to fig. 2 and 3, in a more specific embodiment, the lightning arrester core body 2 includes an insulating sheath 21, a first conductive bolt 22, a second conductive bolt 23, a first electrode 24, a second electrode 25, and a plurality of valve plates 26. First conductive bolt 22, first electrode 24, a plurality of valve block 26, second electrode 25 and second conductive bolt 23 in proper order fixed set up in insulating sheath 21, wherein, first conductive bolt 22's one end in first electrode 24 fixed connection, first conductive bolt 22's the other end by the top of arrester casing 1 extends to the outside, second conductive bolt 23's one end with second electrode 25 fixed connection, second conductive bolt 23's the other end by the bottom of arrester casing 1 extends to the outside, pressure release dog 3 and elastic component 4 all overlap and locate the outside of second conductive bolt 23.

In a more specific embodiment, the valve sheet 26 is a zinc oxide valve sheet.

In a more specific embodiment, the insulating sheath 21 is a Duliton insulating sheath.

To sum up, the utility model provides a lightning arrester with explosion-proof function's beneficial effect does:

on one hand, the pressure relief structure which is arranged in the arrester and consists of the pressure relief gap, the pressure relief cavity, the pressure relief stop block and the elastic piece can relieve pressure when the core body of the arrester explodes, so that potential safety hazards caused by the breakage of the shell of the arrester can be prevented;

on the other hand, the insulating sheath of this arrester core body is last to be seted up a plurality of and to be passed through the pressure release groove completely not, and this pressure release groove can be in the assurance insulating sheath's sealed, insulating effect the while, the reinforcing insulating sheath's pressure release effect to can alleviate the explosion and lead to the fact the destruction to the inner structure of arrester core body.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. A lightning arrester with an explosion-proof function is characterized by comprising a lightning arrester shell, a lightning arrester core, a pressure relief stop block and an elastic piece;

2. A lightning arrester with explosion-proof function as claimed in claim 1, wherein the insulating sheath of the core body of the lightning arrester is provided with a plurality of pressure relief grooves which are not completely penetrated.

3. An arrester having an explosion-proof function according to claim 1, characterized in that the arrester housing is a ceramic housing.

4. An arrester having an explosion-proof function as claimed in claim 1, wherein the resilient member is a compression spring.

5. A arrester having an explosion-proof function as claimed in claim 1, wherein a plurality of skirt-like projections are formed on an outer portion of the arrester housing in a length direction.

6. The arrester with the explosion-proof function as claimed in claim 1, further comprising an elastic sealing ring, wherein the elastic sealing ring is disposed in the mounting cavity and located between the arrester core and the pressure relief block.

7. An arrester having an explosion-proof function according to claim 6, characterized in that the elastic sealing ring is a rubber sealing ring.

8. The arrester with explosion-proof function of claim 1 wherein the arrester core comprises a first conductive bolt, a second conductive bolt, a first electrode, a second electrode, a plurality of valve plates and an insulating sheath;

9. An arrester with explosion-proof function as claimed in claim 8, wherein the valve plate is a zinc oxide valve plate.

10. The arrester with explosion-proof function of claim 8 wherein the insulating sheath is a Duliton insulating sheath.