CN215643905U - Lightning arrester cover plate - Google Patents
Lightning arrester cover plate Download PDFInfo
- Publication number
- CN215643905U CN215643905U CN202122306642.2U CN202122306642U CN215643905U CN 215643905 U CN215643905 U CN 215643905U CN 202122306642 U CN202122306642 U CN 202122306642U CN 215643905 U CN215643905 U CN 215643905U
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- plate body
- blind hole
- lightning arrester
- pressure release
- electrode
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Abstract
A lightning arrester cover plate comprises a plate body and an electrode which are connected into a whole through mould pressing; the plate body is made of composite insulating materials; the electrode is made of a metal material. The electrode comprises a flange connecting end exposed out of the plate body and a core body connecting end; the two flange connecting ends are oppositely arranged on the outer circumferential wall of the plate body; the core body connecting end is positioned in the center of the plate body. A bolt mounting hole group used for being connected with a lightning arrester outer sleeve flange, a ring groove used for assembling a sealing ring, a pressure release channel group and a core body positioning table are sequentially arranged on the plate body from outside to inside; the bolt mounting hole group comprises a plurality of bolt mounting holes for being connected with the lightning arrester outer sleeve flange; the pressure release channel group comprises a plurality of pressure release channels, and each pressure release channel comprises an inner blind hole and/or an outer blind hole, wherein the inner blind hole is formed in one surface, facing the inside of the lightning arrester, of the plate body, and the outer blind hole is formed in one surface, facing the outside of the lightning arrester, of the plate body. On the premise of ensuring the product performance, the utility model reduces the manufacturing complexity, simplifies the assembly process and saves the production cost.
Description
Technical Field
The utility model relates to a cover plate for a lightning arrester.
Background
An arrester is an important electrical device in an electrical power system for protecting other electrical devices from overvoltage. When the arrester fails due to overload or other reasons, short circuit and electric arc may occur inside the arrester, which may lead to rapid increase of gas pressure and temperature inside the arrester, resulting in explosion of the arrester. Therefore, the lightning arrester with the enclosed gas inside is generally provided with a pressure release device, and the existing lightning arrester pressure release device has the disadvantages of complex structure and higher manufacturing and assembling difficulty.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the lightning arrester cover plate, which has a pressure release function, reduces the manufacturing complexity, simplifies the assembly process and saves the production cost on the premise of ensuring the product performance.
The technical scheme of the utility model is as follows: a lightning arrester cover plate comprises a plate body and an electrode which are connected into a whole through mould pressing; the plate body is made of a composite insulating material; the electrode is made of a metal material.
The electrode comprises a flange connecting end exposed out of the plate body and a core body connecting end; the two flange connecting ends are oppositely arranged on the outer circumferential wall of the plate body; the core body connecting end is positioned in the center of the plate body.
A bolt mounting hole group used for being connected with a lightning arrester outer sleeve flange, a ring groove used for assembling a sealing ring, a pressure release channel group and a core body positioning table are sequentially arranged on the plate body from outside to inside; the bolt mounting hole group comprises a plurality of bolt mounting holes for being connected with the lightning arrester outer sleeve flange; the pressure release channel group comprises a plurality of pressure release channels, each pressure release channel comprises an inner blind hole and/or an outer blind hole, the inner blind hole is formed in one surface, facing the inside of the lightning arrester, of the plate body, and/or the outer blind hole is formed in one surface, facing the outside of the lightning arrester, of the plate body, namely the pressure release channels can be single-surface blind holes formed in one surface of the plate body and can also be double-surface blind holes formed in two surfaces of the plate body relatively.
The depth of the inner blind hole is greater than 4/5 of the thickness of the plate body.
The depth of the outer blind hole is greater than 4/5 of the thickness of the plate body.
The inner blind hole and the outer blind hole are oppositely arranged on two surfaces of the plate body to form a pressure release channel together.
The sum of the depth of the inner blind hole and the depth of the outer blind hole is larger than 4/5 of the thickness of the plate body.
The composite insulating material is epoxy resin or nylon.
The cover plate of the lightning arrester is formed by compression molding of a composite insulating material and an electrode (metal plate), wherein the cover plate is made of the composite insulating material, and the electrode is made of the metal material; the mould pressing piece has good mechanical and sealing performance, and is fixed with the lightning arrester outer sleeve flange through the bolt, so that the lightning arrester core body is isolated from the external environment. The flange connecting end of the electrode can be reliably connected with the outer sleeve flange of the lightning arrester, and the core body connecting end is connected with the core body of the lightning arrester, so that equipotential of the end part of the core body of the lightning arrester and the end part of the flange is guaranteed. The pressure release function of the lightning arrester is realized by reserving a weak link, namely a pressure release channel, on the cover plate. The utility model reduces the complexity of manufacture, reduces the manufacturing cost, and is more convenient to assemble on the lightning arrester. The overvoltage protection circuit can be widely used for overvoltage protection of a transformer, a parallel compensation capacitor, a generator, an electrified railway and other alternating current and direct current electrical equipment.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure, 1, an electrode, 101, a flange connecting end, 102, a core connecting end, 2, a plate body, 201, a core positioning table, 202, a pressure relief channel, 203, a ring groove, 204 and a bolt mounting hole.
Detailed Description
In fig. 1, the lightning arrester cover plate with a pressure release function provided by the utility model comprises a plate body 2 and an electrode 1 which are connected into a whole through mould pressing. The plate body 2 is made of composite insulating materials; the electrode 1 is made of a metal material. The electrode 1 is a metal plate, and includes a portion wrapped by the plate body 2 and a portion exposed out of the plate body 2, and the portion exposed out of the plate body 2 includes a flange connection end 101 and a core body connection end 102. The core attachment end 102 is located centrally in the plate body 2. The two flange connection ends 101 are oppositely located on the outer circumferential wall of the plate body 2. Each flange connection end 101 is provided with a bolt mounting hole for connecting with a lightning arrester outer sleeve flange.
The plate body 2 is sequentially provided with a bolt mounting hole group for being connected with a lightning arrester outer sleeve flange, a ring groove 203 for mounting a sealing ring, a pressure release channel group and a core body positioning table 201 from outside to inside. The core positioning table 201 is located at the center of the plate body. The bolt mounting hole group comprises a plurality of bolt mounting holes 204 used for being connected with the lightning arrester outer sleeve flange, and the cover plate can be fixed with the lightning arrester outer sleeve flange through bolts to isolate the lightning arrester core from the external environment. The flange connecting end 101 of the electrode 1 can be reliably connected with the outer sleeve flange of the lightning arrester, and the core body connecting end 102 is connected with the core body of the lightning arrester, so that the equipotential of the end part of the core body and the end part of the flange is ensured. The pressure release channel group comprises four pressure release channels 202, and the pressure release function of the lightning arrester is realized. Each pressure release channel comprises an inner blind hole and an outer blind hole which are oppositely arranged on two surfaces of the plate body 2. The sum of the depth of the inner blind hole and the depth of the outer blind hole is greater than 4/5 of the thickness of the plate body 2. The cover plate, the sealing ring and the explosion-proof plate are designed into a whole to form an integral independent part, so that the manufacturing complexity is reduced, the assembly process is simplified and the production cost is saved on the premise of ensuring the product performance.
Claims (6)
1. An arrester cover plate, its characterized in that: comprises a plate body (2) and an electrode (1) which are connected into a whole through mould pressing; the plate body (2) is made of a composite insulating material; the electrode (1) is made of a metal material;
the electrode (1) comprises a flange connecting end (101) exposed out of the plate body (2) and a core body connecting end (102); the two flange connecting ends (101) are oppositely arranged on the outer circumferential wall of the plate body (2); the core body connecting end (102) is positioned in the center of the plate body (2);
a bolt mounting hole group used for being connected with a lightning arrester outer sleeve flange, a ring groove (203) used for assembling a sealing ring, a pressure release channel group and a core body positioning table (201) are sequentially arranged on the plate body (2) from outside to inside; the core body positioning table (201) is positioned in the center of the plate body; the bolt mounting hole group comprises a plurality of bolt mounting holes (204) used for being connected with the lightning arrester outer sleeve flange; the pressure release channel group comprises a plurality of pressure release channels (202), and each pressure release channel (202) comprises an inner blind hole and/or an outer blind hole, wherein the inner blind hole is formed in one surface, facing the inside of the lightning arrester, of the plate body (2), and/or the outer blind hole is formed in one surface, facing the outside of the lightning arrester, of the plate body (2).
2. The arrester cover plate according to claim 1, characterized in that: the depth of the inner blind hole is greater than 4/5 of the thickness of the plate body (2).
3. The arrester cover plate according to claim 1, characterized in that: the depth of the outer blind hole is greater than 4/5 of the thickness of the plate body (2).
4. The arrester cover plate according to claim 1, characterized in that: the inner blind hole and the outer blind hole are oppositely arranged on two sides of the plate body (2).
5. The arrester cover plate according to claim 4, characterized in that: the sum of the depth of the inner blind hole and the depth of the outer blind hole is larger than 4/5 of the thickness of the plate body (2).
6. The arrester cover plate according to claim 1, characterized in that: the composite insulating material is epoxy resin or nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122306642.2U CN215643905U (en) | 2021-09-23 | 2021-09-23 | Lightning arrester cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122306642.2U CN215643905U (en) | 2021-09-23 | 2021-09-23 | Lightning arrester cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215643905U true CN215643905U (en) | 2022-01-25 |
Family
ID=79918829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122306642.2U Active CN215643905U (en) | 2021-09-23 | 2021-09-23 | Lightning arrester cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215643905U (en) |
-
2021
- 2021-09-23 CN CN202122306642.2U patent/CN215643905U/en active Active
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