CN112863795A - Composite outer sleeve parallel gap lightning arrester - Google Patents
Composite outer sleeve parallel gap lightning arrester Download PDFInfo
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- CN112863795A CN112863795A CN202110074393.0A CN202110074393A CN112863795A CN 112863795 A CN112863795 A CN 112863795A CN 202110074393 A CN202110074393 A CN 202110074393A CN 112863795 A CN112863795 A CN 112863795A
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- lightning arrester
- discharge
- electrode
- conductive bolt
- outer sleeve
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- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 10
- 238000010891 electric arc Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
Abstract
The invention relates to a composite outer sleeve parallel gap lightning arrester, which comprises a lightning arrester body, a discharge rod and a discharge ball; the lightning arrester body comprises a core body, a silicon rubber outer sleeve, a first conductive bolt and a second conductive bolt; the core body consists of an SMC layer, and a first electrode, five resistance cards and a second electrode which are sequentially arranged in the SMC layer; the silicon rubber outer sleeve is wrapped outside the core body, the discharge rod is connected with the first electrode, and the discharge ball is connected with the second electrode; end covers are arranged at two ends of the silicon rubber outer sleeve, a first conductive bolt penetrates through the end cover at one side to be connected with a first electrode, the first conductive bolt is connected with a high-voltage bus, a second conductive bolt penetrates through the end cover at the other side to be connected with a second electrode, and the second conductive bolt is connected with a ground wire; the discharge rod and the discharge ball form a discharge gap in parallel connection with the lightning arrester body. The invention adopts the design of the parallel gap, the lightning arrester body does not bear the task of releasing overvoltage current independently, and the parallel gap releases the overvoltage current simultaneously, so that the lightning arrester can bear heavy current, and the service life of the lightning arrester is greatly prolonged.
Description
Technical Field
The invention belongs to the technical field of lightning arresters, and relates to a composite outer sleeve parallel gap lightning arrester.
Background
The traditional gapless lightning arrester simply utilizes the nonlinear volt-ampere characteristic of a resistor disc to protect a system, and when overvoltage occurs and reaches the threshold value of the resistor disc, the lightning arrester is conducted to release overvoltage current to the ground, so that the system is protected from being damaged. That is, the whole process is released by the lightning arrester, and when the overvoltage current is released repeatedly or exceeds the nominal discharge current of the lightning arrester, the lightning arrester can be damaged, and accidents can be caused.
The traditional gap lightning arrester and the lightning protection gap are protected by series gaps, and the large current of overvoltage cannot be shared by the lightning arrester body. And its clearance and arrester body are the components of a whole that can function independently design, clearance and arrester independent structure promptly, and the cooperation is installed, and its electrical property is difficult to guarantee.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a composite outer sleeve parallel gap arrester so as to solve the problems of short service life, more faults and unstable electrical performance of a series split gap arrester.
The invention relates to a composite outer sleeve parallel gap lightning arrester, which comprises a lightning arrester body, a discharge rod and a discharge ball; the lightning arrester body comprises a core body, a silicon rubber outer sleeve, a first conductive bolt and a second conductive bolt; the core body consists of an SMC layer, and a first electrode, five resistance sheets and a second electrode which are sequentially arranged in the SMC layer; the silicon rubber outer sleeve is wrapped outside the core body, one end of the discharge rod penetrates through the lightning arrester body to be connected with the first electrode, and one end of the discharge ball penetrates through the lightning arrester body to be connected with the second electrode; end covers are installed at two ends of the silicon rubber outer sleeve, the first conductive bolt penetrates through the end cover at one side to be connected with the first electrode, the first conductive bolt is connected with the high-voltage bus, the second conductive bolt penetrates through the end cover at the other side to be connected with the second electrode, and the second conductive bolt is fixed on the cross arm and connected with the ground wire; the discharge rod and the discharge ball form a discharge gap in parallel connection with the lightning arrester body.
In the composite outer sleeve parallel gap lightning arrester, the resistor disc is a piezoresistor.
In the composite coat parallel gap arrester, a plurality of silicon rubber umbrella skirts are integrally formed on the surface of the silicon rubber coat.
In the composite outer sleeve parallel gap lightning arrester, the discharge rod and the discharge ball are both made of stainless steel, silicon rubber is wrapped outside the discharge rod, one end of the discharge rod is connected with the first electrode, and the other end of the discharge rod is bent to be opposite to the discharge ball, so that the optimal discharge gap between the discharge rod and the discharge ball is ensured.
According to the composite outer sleeve parallel gap lightning arrester, the parallel gap lightning arrester adopts a parallel design, so that large current can be distributed, and the service life of the lightning arrester is greatly prolonged. The gap structure is designed as a spherical gap, so that the discharge voltage is more stable, and the protection performance is more reliable. The gap mechanism and the lightning arrester are designed in an integrated mode, the electrical performance is stable, and the installation is convenient.
Drawings
FIG. 1 is a schematic structural view of a composite housed parallel gap arrester of the present invention;
fig. 2 is a cross-sectional view of a composite housed parallel gap arrester of the present invention.
Detailed Description
As shown in fig. 1, the composite outer sleeve parallel gap arrester of the present invention includes: the lightning arrester comprises a lightning arrester body 1, a discharge rod 2 and a discharge ball 3. The arrester body comprises a core body, a silicon rubber outer sleeve 12, a first conductive bolt 11 and a second conductive bolt 18. The core body is composed of an SMC layer 14, and a first electrode 13, five resistive sheets 15 and a second electrode 16 which are arranged in the SMC layer 14 in sequence. The silicon rubber outer sleeve 12 is wrapped outside the core body, one end of the discharge rod 2 penetrates through the lightning arrester body to be connected with the first electrode 13, and one end of the discharge ball 3 penetrates through the lightning arrester body to be connected with the second electrode 16. End covers 17 are installed at two ends of the silicon rubber outer sleeve 12, the first conductive bolt 11 penetrates through the end cover on one side to be connected with the first electrode 13, the first conductive bolt 11 is connected with a high-voltage bus, the second conductive bolt 18 penetrates through the end cover on the other side to be connected with the second electrode 16, and the second conductive bolt 18 is fixed on the cross arm and connected with the ground wire. The discharge rod 2 and the discharge ball 3 form a parallel discharge gap of the lightning arrester body 1.
The resistance card is a piezoresistor. A plurality of silicon rubber umbrella skirts 19 are integrally formed on the surface of the silicon rubber outer sleeve 12. The discharging rod and the discharging ball are made of stainless steel, silicon rubber is wrapped outside the discharging rod, one end of the discharging rod is connected with the first electrode, the other end of the discharging rod is bent to be opposite to the discharging ball, and the optimal discharging gap between the discharging rod and the discharging ball is guaranteed.
The composite outer sleeve parallel gap lightning arrester adopts the structural design that the lightning arrester body is connected with the discharge gap in parallel, the discharge voltage of the discharge gap is far larger than the threshold value of the lightning arrester body, and when overvoltage with smaller voltage occurs, lightning current is released by the lightning arrester. When the overvoltage continues to rise, the gap breaks down and discharges, so that the condition that the arrester and the discharge gap release overvoltage current at the same time is formed. That is to say, the surge arrester no longer has the task of discharging the overvoltage current alone, but is discharged jointly therewith by the parallel gap. Especially when the lightning current exceeds the nominal discharge current of the arrester body, a considerable part of the current will be discharged by the parallel gap. And as the overvoltage becomes smaller, the electric arc of the discharge gap is firstly extinguished, the relatively small overvoltage is continuously released by the lightning arrester, when the overvoltage is further reduced and is smaller than the threshold value of the resistance card, the high-voltage current is broken off and is in a high-resistance state, and the lightning arrester is continuously in a system voltage operation state.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined by the appended claims.
Claims (4)
1. The utility model provides a compound parallelly connected clearance arrester of overcoat which characterized in that includes: the lightning arrester comprises a lightning arrester body, a discharge rod and a discharge ball; the lightning arrester body comprises a core body, a silicon rubber outer sleeve, a first conductive bolt and a second conductive bolt; the core body consists of an SMC layer, and a first electrode, five resistance sheets and a second electrode which are sequentially arranged in the SMC layer; the silicon rubber outer sleeve is wrapped outside the core body, one end of the discharge rod penetrates through the lightning arrester body to be connected with the first electrode, and one end of the discharge ball penetrates through the lightning arrester body to be connected with the second electrode; end covers are installed at two ends of the silicon rubber outer sleeve, the first conductive bolt penetrates through the end cover at one side to be connected with the first electrode, the first conductive bolt is connected with the high-voltage bus, the second conductive bolt penetrates through the end cover at the other side to be connected with the second electrode, and the second conductive bolt is fixed on the cross arm and connected with the ground wire; the discharge rod and the discharge ball form a discharge gap in parallel connection with the lightning arrester body.
2. The composite housed parallel gap arrestor of claim 1 in which the resistive patches are piezoresistors.
3. The composite cover parallel gap arrester of claim 1 wherein the silicone rubber cover has a plurality of silicone rubber sheds integrally formed on its surface.
4. The composite housed parallel gap arrester of claim 1 wherein the discharge rod and the discharge ball are made of stainless steel, the discharge rod is wrapped with silicone rubber, one end of the discharge rod is connected to the first electrode, and the other end is bent to face the discharge ball, thereby ensuring an optimum discharge gap between the discharge rod and the discharge ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110074393.0A CN112863795A (en) | 2021-01-20 | 2021-01-20 | Composite outer sleeve parallel gap lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110074393.0A CN112863795A (en) | 2021-01-20 | 2021-01-20 | Composite outer sleeve parallel gap lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112863795A true CN112863795A (en) | 2021-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110074393.0A Pending CN112863795A (en) | 2021-01-20 | 2021-01-20 | Composite outer sleeve parallel gap lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112863795A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115512917A (en) * | 2022-09-28 | 2022-12-23 | 江西百新电瓷电气有限公司 | Method for manufacturing composite outer sleeve fixed gap separable lightning arrester |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005276986A (en) * | 2004-03-24 | 2005-10-06 | Nishi Nippon Electric Wire & Cable Co Ltd | Parallel type lightning arrester and technique of parallel type lightning arresting |
| CN106158180A (en) * | 2016-07-04 | 2016-11-23 | 安徽天达网络科技有限公司 | A kind of Zinc-Oxide Arrester |
| CN109448939A (en) * | 2018-12-21 | 2019-03-08 | 辽宁华隆电力科技股份有限公司 | A kind of tension-resistant rod external series gap metal oxide arrester |
| CN209199705U (en) * | 2019-01-18 | 2019-08-02 | 西安神电(泾阳)电器有限公司 | A kind of surge arrester with parallel gaps |
| CN213935799U (en) * | 2021-01-20 | 2021-08-10 | 辽宁华隆电力科技股份有限公司 | Composite outer sleeve parallel gap lightning arrester |
-
2021
- 2021-01-20 CN CN202110074393.0A patent/CN112863795A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005276986A (en) * | 2004-03-24 | 2005-10-06 | Nishi Nippon Electric Wire & Cable Co Ltd | Parallel type lightning arrester and technique of parallel type lightning arresting |
| CN106158180A (en) * | 2016-07-04 | 2016-11-23 | 安徽天达网络科技有限公司 | A kind of Zinc-Oxide Arrester |
| CN109448939A (en) * | 2018-12-21 | 2019-03-08 | 辽宁华隆电力科技股份有限公司 | A kind of tension-resistant rod external series gap metal oxide arrester |
| CN209199705U (en) * | 2019-01-18 | 2019-08-02 | 西安神电(泾阳)电器有限公司 | A kind of surge arrester with parallel gaps |
| CN213935799U (en) * | 2021-01-20 | 2021-08-10 | 辽宁华隆电力科技股份有限公司 | Composite outer sleeve parallel gap lightning arrester |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115512917A (en) * | 2022-09-28 | 2022-12-23 | 江西百新电瓷电气有限公司 | Method for manufacturing composite outer sleeve fixed gap separable lightning arrester |
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