CN105790201A - Lightning arrester for power transmission line - Google Patents
Lightning arrester for power transmission line Download PDFInfo
- Publication number
- CN105790201A CN105790201A CN201610244380.2A CN201610244380A CN105790201A CN 105790201 A CN105790201 A CN 105790201A CN 201610244380 A CN201610244380 A CN 201610244380A CN 105790201 A CN105790201 A CN 105790201A
- Authority
- CN
- China
- Prior art keywords
- cold
- heat
- core
- hold
- transmission line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
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- Thermistors And Varistors (AREA)
Abstract
The invention relates to a lightning arrester for a power transmission line. The lightning arrester comprises a pressure-sensitive resistor core, an insulator, a fixing part and a conductive connecting plate, wherein the insulator is positioned on and fixedly connected with the outer ring of the pressure-sensitive resistor core, the conductive connecting plate is positioned on and fixedly connected with the lower end of the pressure-sensitive resistor core, the fixing part is positioned on and fixedly connected with the pressure-sensitive resistor core, and the fixing part comprises a fixing nut, a cold-expanding and heat-shrinking fixing nut and a cold-expanding and heat-shrinking rubber gasket. The fixing nut and cold-expanding and heat-shrinking fixing nut are fixedly and sequentially connected with threads on the upper end of the pressure-sensitive resistor core from top to bottom, and the cold-expanding and heat-shrinking rubber gasket is positioned between and fixedly connected between the cold-expanding and heat-shrinking fixing nut and the pressure-sensitive resistor core. The lightning arrester has excellent sealing effects, and the seal effect may not affected by change of temperature.
Description
Technical field
The present invention relates to electric fittings structure-design technique field, particularly relate to a kind of lightening arrester of transmission line.
Background technology
Thunderbolt, is actually thundercloud charge and lets out to the unexpected wash with watercolours of the earth, when thunder and lightning acts on transmission line of electricity, will result in impulse overvoltage.Because this overvoltage is owing to the thunder and lightning effect in air causes, therefore it is referred to as atmospheric over-voltage, again owing to the energy of this overvoltage originates from outside power system, therefore also referred to as exterior overvoltage.And being struck by lightning is the main cause causing power failure, significant portion of tripping operation causes due to thunderbolt.Having the multiple mode avoiding thunderbolt in prior art, spark gap is generally used as a kind of lightning-arrest effective lightning arrester.And spark gap of the prior art often causes performance impairment because of sealing effectiveness problem.Especially, common fixing device and caulking gum make period occur that gap causes that sealing property reduces owing to expanding with heat and contract with cold.
Summary of the invention
Present invention aims to the defect of prior art and deficiency, it is provided that a kind of simple in construction, lightening arrester of transmission line reasonable in design, easy to use.
For achieving the above object, the technical solution used in the present invention is: a kind of lightening arrester of transmission line, including varistor core, insulator, fixture and conduction connecting plate, described insulator is positioned at the outer ring of varistor core and is secured to connect, described conduction connecting plate is positioned at the lower end of varistor core and is secured to connect, described fixture is positioned at varistor core and is secured to connect, described fixture includes hold-doun nut, expand with cold and contract with heat hold-doun nut and the rubber blanket that expands with cold and contracts with heat, the threaded engagement that hold-doun nut and the hold-doun nut that expands with cold and contracts with heat are arranged with varistor core upper end from top to bottom successively is fixed and is connected, the described rubber blanket that expands with cold and contracts with heat is expanding with cold and contracting with heat between hold-doun nut with varistor core and it fixing is connected.
Further, described varistor core is Zinc-oxide piezoresistor core.
Further, described in the expand with cold and contract with heat inner ring of hold-doun nut be antimony material female thread, its outer ring is common steel nut.
Further, described in expand with cold and contract with heat the rubber ring that the latter half of rubber blanket is nickel sulfide doping, the first half of the rubber blanket that expands with cold and contracts with heat is General Purpose Rubber circle.
After adopting said structure, present invention have the beneficial effect that a kind of lightening arrester of transmission line of the present invention expands with cold and contracts with heat hold-doun nut by setting and expands with cold and contracts with heat rubber blanket, its temperature too high or too low time deformation little, from without resulting in gap because of fixture deformation, ensure that sealing effectiveness, and there is simple in construction, the advantage reasonable, cost of manufacture is low is set.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated.
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with the drawings and the specific embodiments, the present invention is further elaborated.Should be appreciated that detailed description of the invention described herein is only in order to explain the present invention, is not intended to limit the present invention.
Shown in Fig. 1, a kind of lightening arrester of transmission line, including varistor core 1, insulator 2, fixture 3 and conduction connecting plate 4, insulator 2 is positioned at the outer ring of varistor core 1 and is secured to connect, conduction connecting plate 4 is positioned at the lower end of varistor core 1 and is secured to connect, fixture 3 is positioned at varistor core 1 and is secured to connect, fixture 3 includes hold-doun nut 31, expand with cold and contract with heat hold-doun nut 32 and the rubber blanket 33 that expands with cold and contracts with heat, the threaded engagement that hold-doun nut 31 and the hold-doun nut 32 that expands with cold and contracts with heat are arranged with varistor core 1 upper end from top to bottom successively is fixed and is connected, the rubber blanket 33 that expands with cold and contracts with heat is expanding with cold and contracting with heat between hold-doun nut 32 with varistor core 1 and it fixing is connected.Preferably, varistor core 1 is Zinc-oxide piezoresistor core.In use procedure, expand with cold and contract with heat hold-doun nut 32 and the rubber blanket 33 that expands with cold and contracts with heat shrinks when temperature height, expand when temperature is low, act in opposite directions with 1 one-tenth of varistor core, it is to avoid shrink with varistor core time temperature is low simultaneously and result in gap and cause sealing property to be deteriorated.
Preferably, the inner ring of the hold-doun nut 32 that expands with cold and contracts with heat is antimony material female thread, and its outer ring is common steel nut.Expand with cold and contract with heat the rubber ring that the latter half of rubber blanket 33 is nickel sulfide doping, and the first half of the rubber blanket 33 that expands with cold and contracts with heat is General Purpose Rubber circle.
The above, only in order to technical scheme to be described and unrestricted, other amendment that technical scheme is made by those of ordinary skill in the art or equivalent replace, without departing from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of scope of the presently claimed invention.
Claims (4)
- null1. a lightening arrester of transmission line，It is characterized in that: include varistor core (1)、Insulator (2)、Fixture (3) and conduction connecting plate (4)，Described insulator (2) is positioned at the outer ring of varistor core (1) and is secured to connect，Described conduction connecting plate (4) is positioned at the lower end of varistor core (1) and is secured to connect，Described fixture (3) is positioned at varistor core (1) and is secured to connect，Described fixture (3) includes hold-doun nut (31)、Expand with cold and contract with heat hold-doun nut (32) and the rubber blanket that expands with cold and contracts with heat (33)，The threaded engagement that hold-doun nut (31) and the hold-doun nut that expands with cold and contracts with heat (32) are arranged with varistor core (1) upper end from top to bottom successively is fixed and is connected，The described rubber blanket that expands with cold and contracts with heat (33) is positioned between the hold-doun nut that expands with cold and contracts with heat (32) with varistor core (1) and it is fixed and is connected.
- 2. a kind of lightening arrester of transmission line according to claim 1, it is characterised in that: described varistor core (1) is Zinc-oxide piezoresistor core.
- 3. a kind of lightening arrester of transmission line according to claim 1, it is characterised in that: described in the expand with cold and contract with heat inner ring of hold-doun nut (32) be antimony material female thread, its outer ring is common steel nut.
- 4. a kind of lightening arrester of transmission line according to claim 1, it is characterized in that: described in expand with cold and contract with heat the rubber ring that the latter half of rubber blanket (33) is nickel sulfide doping, the first half of the rubber blanket that expands with cold and contracts with heat (33) is General Purpose Rubber circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610244380.2A CN105790201A (en) | 2016-04-19 | 2016-04-19 | Lightning arrester for power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610244380.2A CN105790201A (en) | 2016-04-19 | 2016-04-19 | Lightning arrester for power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105790201A true CN105790201A (en) | 2016-07-20 |
Family
ID=56397838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610244380.2A Pending CN105790201A (en) | 2016-04-19 | 2016-04-19 | Lightning arrester for power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105790201A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768914A (en) * | 2020-06-19 | 2020-10-13 | 王保林 | Thermal shrinkage and cold expansion type self-on-off cable sheath |
| RU2819864C1 (en) * | 2020-12-08 | 2024-05-28 | СЯНЬ ЭксДи АРРЕСТЕР КО., ЛТД. | Lightning arrester and method of its manufacturing |
-
2016
- 2016-04-19 CN CN201610244380.2A patent/CN105790201A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768914A (en) * | 2020-06-19 | 2020-10-13 | 王保林 | Thermal shrinkage and cold expansion type self-on-off cable sheath |
| CN111768914B (en) * | 2020-06-19 | 2021-12-31 | 大唐辽源发电厂 | Thermal shrinkage and cold expansion type self-on-off cable sheath |
| RU2819864C1 (en) * | 2020-12-08 | 2024-05-28 | СЯНЬ ЭксДи АРРЕСТЕР КО., ЛТД. | Lightning arrester and method of its manufacturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160720 |