CN113744943A - Core body structure of composite outer sleeve lightning arrester and composite outer sleeve lightning arrester - Google Patents
Core body structure of composite outer sleeve lightning arrester and composite outer sleeve lightning arrester Download PDFInfo
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- CN113744943A CN113744943A CN202111026766.3A CN202111026766A CN113744943A CN 113744943 A CN113744943 A CN 113744943A CN 202111026766 A CN202111026766 A CN 202111026766A CN 113744943 A CN113744943 A CN 113744943A
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- composite
- main body
- core structure
- positioning disc
- lightning arrester
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/08—Cooling, heating or ventilating arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/08—Cooling, heating or ventilating arrangements
- H01C1/084—Cooling, heating or ventilating arrangements using self-cooling, e.g. fins, heat sinks
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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
- H01C7/001—Mass resistors
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- Engineering & Computer Science (AREA)
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- Thermistors And Varistors (AREA)
Abstract
A core structure of a composite housed arrester and the composite housed arrester thereof, wherein the core structure comprises a plurality of resistance sheets which are overlapped up and down, a positioning disc is arranged between two adjacent resistance sheets, the positioning disc comprises a positioning disc main body, the diameter of the positioning disc main body is basically equal to that of the resistance sheets, n arc lugs extending outwards are arranged on the circumference of the positioning disc main body, wherein n is an integer which is more than or equal to 6, all the arc lugs are divided into two parts which are arranged at intervals, one part of the arc lugs are bent to be bent towards one side of the positioning disc main body, and the other part of the arc lugs are bent to be bent towards the other side of the positioning disc main body; the puck is made of sheet metal. The invention has the advantages of no need of pre-forming, good heat dissipation effect, light weight and low cost.
Description
Technical Field
The invention relates to the technical field of alternating current power transmission and transformation overvoltage protection, in particular to a core body structure of a composite outer sleeve lightning arrester and the composite outer sleeve lightning arrester.
Background
The composite outer sleeve lightning arrester is widely applied to alternating current and direct current power transmission and transformation systems due to light weight, excellent pollution resistance and good earthquake resistance, and becomes important equipment for protecting lightning overvoltage and operation overvoltage of the power transmission and transformation systems. The composite housed arrester generally includes a composite housing with a skirt, a core body is disposed in the composite housing, an upper flange is disposed at an upper end of the core body, and a lower flange is disposed at a lower end of the core body. The existing core body is formed by connecting a plurality of metal oxide resistance discs, adjusting cushion blocks arranged among the resistance discs, an upper electrode arranged at the uppermost end of the core body and a lower electrode arranged at the lowermost end of the core body in series. At present, the core body has more types, a glass fiber epoxy resin drawing rod fixing structure and a glass fiber cloth (wire) impregnated epoxy resin winding and curing structure; the core body with the structure has the following problems that firstly, the core body with the structure needs to be prefabricated and molded in advance, the manufacturing cost is high, and the installation efficiency is low; secondly, insulating materials are required to wrap the outer sides of the resistor disc of the core body, so that the resistor disc has poor heat dissipation characteristics, and the service life of the core body is shortened; thirdly, the core body of the structure occupies large space, so that the inner diameter of the composite outer sleeve is large, the weight of the lightning arrester is heavy, and the cost is high.
Disclosure of Invention
In order to solve the problems, the invention provides a core body structure of a composite outer sleeve lightning arrester which does not need to be molded in advance, has good heat dissipation effect and low weight and cost, and the composite outer sleeve lightning arrester.
The technical scheme of the invention is as follows: the core body structure of the composite outer-sleeve lightning arrester comprises a plurality of resistance sheets which are stacked up and down, a positioning disc is arranged between every two adjacent resistance sheets and comprises a positioning disc main body, the diameter of the positioning disc main body is basically equal to that of the resistance sheets, n arc-shaped protruding sheets extending outwards are arranged on the circumference of the positioning disc main body, wherein n is an integer which is more than or equal to 6, all the arc-shaped protruding sheets are divided into two parts which are arranged at intervals, one part of the arc-shaped protruding sheets are bent to be bent towards one side of the positioning disc main body, and the other part of the arc-shaped protruding sheets are bent to be bent towards the other side of the positioning disc main body; the puck is made of sheet metal.
As an improvement of the invention, a space is arranged between two adjacent arc-shaped convex sheets.
As an improvement to the present invention, the metal sheet is an aluminum alloy sheet, a stainless steel sheet or a copper sheet.
The damping pad comprises an annular main body, the inner diameter D1 of the annular main body is basically equal to the diameter of the resistance sheet, the outer diameter D2 of the annular main body is basically equal to the inner diameter of the composite outer sleeve, the damping pad is sleeved on the outer wall of the resistance sheet, and the annular main body is provided with a ventilation part.
As an improvement to the invention, the vent part is composed of a plurality of through holes arranged on the annular main body; alternatively, the vent part is formed by a plurality of notches formed by inward concave outer edges of the annular main body.
The damping pad is sleeved on the cushion block, and the annular main body of the damping pad is provided with a ventilation part.
As an improvement to the invention, the vent part is composed of a plurality of through holes arranged on the annular main body; alternatively, the vent part is formed by a plurality of notches formed by inward concave outer edges of the annular main body.
As an improvement to the invention, the shock pad is made of a silicone or rubber material.
The invention also provides a composite coat lightning arrester, which comprises a composite coat with an umbrella skirt, wherein the upper end of the composite coat is provided with an upper flange, an upper electrode is arranged in the upper flange, the lower end of the composite coat is provided with a lower flange, a lower electrode is arranged in the lower flange, a core body structure is arranged in an inner cavity of the composite coat between the upper electrode and the lower electrode, and the core body structure is the core body structure of the composite coat lightning arrester.
Compared with the prior art, the invention has the following advantages:
firstly, the core body of the lightning arrester does not need to be manufactured in advance, and can be assembled synchronously when the lightning arrester is assembled, so that the assembly efficiency is improved;
secondly, the outer side of the resistor disc of the core body is not wrapped by any insulating material, the resistor disc has good heat dissipation characteristic, aging can be delayed, and the service life of the core body is prolonged;
the core body of the invention occupies small space and does not need to be wrapped by any insulating material, thus the inner diameter of the inner cavity of the composite outer sleeve can be reduced, the weight of the lightning arrester is lightened, and the cost of the lightning arrester is reduced.
Drawings
Fig. 1 is a schematic side view of one embodiment of the core structure of the present invention.
Fig. 2 is a schematic plan view of the puck of fig. 1.
Fig. 3 is a schematic view of the sectional structure a-a of fig. 2.
FIG. 4 is a schematic plan view of one embodiment of the cushion of FIG. 1.
Fig. 5 is a schematic view of the B-B sectional structure of fig. 4.
FIG. 6 is a schematic plan view of another embodiment of a shock pad.
Fig. 7 is a schematic cross-sectional view of an embodiment of the arrester according to the present invention.
Detailed Description
Referring to fig. 1 to 6, fig. 1 to 6 disclose a core structure 6 of a composite covered lightning arrester, which includes a plurality of stacked resistive sheets 1 (the number of the resistive sheets 1 is determined according to the requirement), a positioning disc 2 is arranged between two adjacent resistance cards 1, the positioning disc 2 comprises a positioning disc main body 21, the diameter of the positioning disc main body 21 is basically equal to that of the resistance card 1, n arc-shaped protruding pieces 212 extending outwards are arranged on the circumference 211 of the positioning disc main body 21, where n is an integer of 6 or more (in the present embodiment, the number of the arc-shaped convex pieces 212 is 6), all the arc-shaped convex pieces 212 are divided into two parts, wherein one part of the arc-shaped lugs 212 is bent to bend towards one side of the positioning disk main body 21, and the other part of the arc-shaped lugs 212 is bent to bend towards the other side of the positioning disk main body 21; specifically, if one arc-shaped protruding piece 212 is bent upwards, the adjacent arc-shaped protruding piece 212 is bent downwards, the upward bent arc-shaped protruding piece 212 is used for positioning the upper resistance card 1, and the downward bent arc-shaped protruding piece 212 is used for positioning the lower resistance card 1, in this embodiment, the positioning disc 2 is made of a metal sheet, and the metal sheet is an aluminum alloy sheet, a stainless steel sheet or a copper sheet; preferably, a space 213 is provided between two adjacent arc-shaped protruding pieces 212.
Preferably, the invention further comprises a damper pad 3, the damper pad 3 comprises an annular main body 31, an inner diameter D1 of the annular main body 31 is substantially equal to an outer diameter of the resistance chip 1, an outer diameter D2 of the annular main body 31 is substantially equal to an inner diameter of the composite outer sleeve, the damper pad 3 is sleeved on an outer wall of the resistance chip 1, and the annular main body 31 is provided with a vent part 32. The vent part 32 is composed of a plurality of gaps 322 formed by inward concave of the outer edge of the annular main body 31; a bulge 323 is formed between two adjacent gaps 322; when in use, the bulge 323 is abutted against the inner wall of the composite outer sleeve 7, so as to achieve the dual purposes of shock absorption and positioning.
Preferably, the invention further comprises cushion blocks 4 made of metal materials, the cushion blocks 4 made of metal materials are arranged between the resistance cards 1, the positioning disc 2 is arranged between the resistance cards 1 and the cushion blocks 4, the cushion block 4 is sleeved with the shock pad 3, the cushion block 4 can be designed into two shapes, the first shape is a cylinder, and at the moment, the shock pad 3 is directly sleeved on the outer wall of the cushion block 4; the second one is cylindrical, but a groove is provided in the middle of the cylindrical pad 4 (as shown in fig. 1), and the cushion 3 is fitted in the groove to prevent the cushion 3 from moving axially.
In this embodiment, the cushion 3 is made of silicone or rubber.
By adopting the design, the core body does not need to be manufactured in advance, and only the resistor disc 1, the positioning disc 2, the shock pad 3 and the cushion block 4 need to be installed into the composite outer sleeve of the lightning arrester according to the design requirement when the lightning arrester is assembled, so that the assembly can be completed synchronously with the lightning arrester, and the assembly efficiency is improved; in addition, the outer side of the resistor disc of the core body structure is not wrapped by any insulating material, so that the resistor disc has good heat dissipation property, aging can be delayed, and the service life of the core body is prolonged; moreover, the core body of the invention occupies small space and does not need to be wrapped by any insulating material, thus the inner diameter of the inner cavity of the composite outer sleeve can be reduced, the weight of the lightning arrester is lightened, and the cost of the lightning arrester is reduced.
Referring to fig. 6, the cushion 3 may also be designed to include an annular body 31, a vent part 32 is provided on the annular body 31, and the vent part 32 is formed by a plurality of through holes 321 provided on the annular body 31; in use, the outer edge of the annular body 31 abuts against the inner wall of the composite casing 7 to achieve the dual purposes of shock absorption and positioning.
Referring to fig. 7, the present invention further provides a composite-sheathed lightning arrester, including a composite sheath 5 with an umbrella skirt 51, an upper flange 52 is disposed at an upper end of the composite sheath 5, an upper electrode 521 is disposed in the upper flange 52, the upper electrode 521 is disposed on the resistance sheet 1 at the uppermost layer, a positioning disc 2 is disposed between the upper electrode 521 and the resistance sheet 1 at the uppermost layer, and a spring 522, an upper sealing cover plate 523, an upper explosion-proof plate 524 and an upper pressing plate 525 are sequentially disposed on the upper surface of the upper electrode 521 from bottom to top; a lower flange 53 is arranged at the lower end of the composite outer sleeve 5, a lower electrode 531 is arranged in the lower flange 53, a positioning disc 2 is arranged between the lower electrode 531 and the resistor disc 1 at the lowest layer, a lower sealing cover plate 522, a lower explosion-proof plate 523 and a lower pressing plate 524 are sequentially arranged below the lower electrode 531 from top to bottom, a core structure 6 is arranged in an inner cavity 71 of a composite outer sleeve 7 between the upper electrode 521 and the lower electrode 531, and the core structure 6 is the core structure of the composite outer sleeve lightning arrester shown in fig. 1 to 6; the outer wall of the composite coat 7 is provided with a plurality of umbrella skirts 72.
Claims (9)
1. The utility model provides a core structure of composite outer cover arrester, includes a plurality of stacked resistance cards (1) from top to bottom, its characterized in that: a positioning disc (2) is arranged between two adjacent resistance sheets (1), the positioning disc (2) comprises a positioning disc main body (21), the diameter of the positioning disc main body (21) is basically equal to that of the resistance sheets (1), n arc-shaped protruding sheets (212) extending outwards are arranged on the circumference (211) of the positioning disc main body (21), wherein n is an integer which is greater than or equal to 6, all the arc-shaped protruding sheets (212) are divided into two alternate parts, one part of the arc-shaped protruding sheets (212) is bent to bend towards one side of the positioning disc main body (21), and the other part of the arc-shaped protruding sheets (212) is bent to bend towards the other side of the positioning disc main body (21); the positioning plate (2) is made of a metal sheet.
2. The core structure of a composite cased lightning arrester according to claim 1, wherein: a space (213) is arranged between two adjacent arc-shaped convex sheets (212).
3. The core structure of a composite cased lightning arrester according to claim 1 or 2, wherein: the metal sheet is an aluminum alloy sheet, a stainless steel sheet or a copper sheet.
4. The core structure of a composite cased lightning arrester according to claim 1 or 2, wherein: still include shock pad (3), shock pad (3) include annular main part (31), the internal diameter D1 of annular main part (31) with the diameter of resistance card (1) is substantially equal, the external diameter D2 of annular main part (31) is substantially equal with the internal diameter of compound overcoat, shock pad (3) cover is in on the outer wall of resistance card (1) be equipped with portion of ventilating (32) on annular main part (31).
5. The core structure of a composite cased lightning arrester according to claim 4, wherein: the ventilation part (32) is composed of a plurality of through holes (321) arranged on the annular main body (31); alternatively, the vent part (32) is formed by a plurality of notches (322) formed by inward concave outer edges of the annular main body (31).
6. The core structure of a composite cased lightning arrester according to claim 1 or 2, wherein: still include shock pad (3) and cushion (4) of being made by metal material, cushion (4) that metal material made are established between resistance card (1) with be equipped with between cushion (4) positioning disk (2), shock pad (3) cover is in on cushion (4) be equipped with portion of ventilating (32) on the annular main part (31) of shock pad (3).
7. The core structure of a composite housed arrester as claimed in claim 6, wherein: the ventilation part (32) is composed of a plurality of through holes (321) arranged on the annular main body (31); alternatively, the vent part (32) is formed by a plurality of notches (322) formed by inward concave outer edges of the annular main body (31).
8. The core structure of a composite housed arrester as claimed in claim 6, wherein: the shock pad (3) is made of silica gel or rubber materials.
9. The utility model provides a composite coat arrester, includes composite coat (5) of taking full skirt (51) the upper end of composite coat (5) is equipped with flange (52) go up be equipped with upper electrode (521) in flange (52) the lower extreme of composite coat (5) is equipped with lower flange (53) be equipped with bottom electrode (531) in lower flange (53) go up electrode (521) with be equipped with core structure (6), its characterized in that in the composite coat intracavity between bottom electrode (531): the core structure (6) is a core structure of a composite cased lightning arrester according to any of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111026766.3A CN113744943B (en) | 2021-09-02 | 2021-09-02 | Core body structure of composite outer sleeve lightning arrester and composite outer sleeve lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111026766.3A CN113744943B (en) | 2021-09-02 | 2021-09-02 | Core body structure of composite outer sleeve lightning arrester and composite outer sleeve lightning arrester |
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| Publication Number | Publication Date |
|---|---|
| CN113744943A true CN113744943A (en) | 2021-12-03 |
| CN113744943B CN113744943B (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111026766.3A Active CN113744943B (en) | 2021-09-02 | 2021-09-02 | Core body structure of composite outer sleeve lightning arrester and composite outer sleeve lightning arrester |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356166A (en) * | 2016-11-18 | 2017-01-25 | 福建泉源电气设备有限公司 | Composite sleeve zinc oxide lightning arrester |
| CN209544048U (en) * | 2019-02-27 | 2019-10-25 | 江苏神马电力股份有限公司 | A kind of arrester |
| CN211294774U (en) * | 2020-03-13 | 2020-08-18 | 厦门Abb避雷器有限公司 | Effective explosion-proof plug-in type metal oxide arrester |
| CN214012652U (en) * | 2020-12-29 | 2021-08-20 | 大连北方避雷器有限公司 | Injection-molded integrated lightning arrester |
-
2021
- 2021-09-02 CN CN202111026766.3A patent/CN113744943B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356166A (en) * | 2016-11-18 | 2017-01-25 | 福建泉源电气设备有限公司 | Composite sleeve zinc oxide lightning arrester |
| CN209544048U (en) * | 2019-02-27 | 2019-10-25 | 江苏神马电力股份有限公司 | A kind of arrester |
| CN211294774U (en) * | 2020-03-13 | 2020-08-18 | 厦门Abb避雷器有限公司 | Effective explosion-proof plug-in type metal oxide arrester |
| CN214012652U (en) * | 2020-12-29 | 2021-08-20 | 大连北方避雷器有限公司 | Injection-molded integrated lightning arrester |
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| Publication number | Publication date |
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| CN113744943B (en) | 2023-01-24 |
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