CN217881018U - Lightning arrester with fixed series gap - Google Patents
Lightning arrester with fixed series gap Download PDFInfo
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- CN217881018U CN217881018U CN202122330635.6U CN202122330635U CN217881018U CN 217881018 U CN217881018 U CN 217881018U CN 202122330635 U CN202122330635 U CN 202122330635U CN 217881018 U CN217881018 U CN 217881018U
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Abstract
A lightning arrester with a fixed series gap comprises a first discharge body (10), an insulator (20), a second discharge body (30), a nonlinear resistor (40), an end conductor (50) and an insulating outer sleeve (60). The first discharge body includes a first conductive block (11) and a first discharge rod (12). The first conductive block and the first discharging rod are fixedly connected and are not detachable. The second discharge body includes a second conductive block (31) and a second discharge rod (32). The second conductive block and the second discharging rod are fixedly connected and are not detachable. The first conductive block, the insulator, the second conductive block, the nonlinear resistor, and the end conductor are stacked in this order. A series gap (S) is formed between the free end of the first discharge rod and the free end of the second discharge rod. The insulating outer sleeve is wrapped on the circumferential outer sides of the first conductive block, the insulating piece, the second conductive block, the nonlinear resistor body and the end conductor. The arrester is beneficial to fixing the series gap.
Description
Technical Field
The utility model relates to an arrester, especially an arrester with fixed series gap.
Background
At present, the electrodes of the arrester with fixed series gaps are mounted on the arrester core body in a threaded connection. In the production and use processes of the lightning arrester, the connection mode can easily change the extending angle and the direction of the electrode, so that the series gap exceeds the design range, and the lightning arrester cannot work effectively.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a take arrester of fixed series connection clearance, it does benefit to the size in the fixed series connection clearance in arrester production and use.
The utility model provides a take arrester of fixed series gap, it includes that a first discharge body, an insulator, a second discharge body, a nonlinear resistor body, an end conductor and an insulating overcoat. The first discharge body includes a first conductive block and a first discharge rod. The first conductive block and the first discharging rod are fixedly connected and are not detachable. The insulating member is stacked on one side of the first conductive block in an assembling direction. The second discharging body includes a second conductive block and a second discharging rod. The second conductive block and the second discharging rod are fixedly connected and are not detachable. The second conductive block is overlapped on one side of the insulating piece, which is far away from the first conductive block, along the assembling direction. A series gap is formed between the free end of the first discharge rod and the free end of the second discharge rod. The nonlinear resistor body is superposed on one side of the second conductive block, which is far away from the insulator, along the assembling direction. The end conductor is stacked on the side of the nonlinear resistor body facing away from the second conductive block in the assembling direction. The insulating outer sleeve wraps the circumferential outer sides of the first conductive block, the insulating piece, the second conductive block, the nonlinear resistor body and the end conductor.
This take arrester in fixed series gap, first conducting block and first discharge rod set up to fixed connection and non-detachable, and second conducting block and second discharge rod set up to fixed connection and non-detachable, borrow this at the in-process of production with using the arrester, but the extension angle of effective control first discharge rod and second discharge rod does benefit to fixed series gap.
In another exemplary embodiment of the arrester with a fixed series gap, the first conductive block and the first discharge rod are fixed by welding, and the second conductive block and the second discharge rod are fixed by welding. Thereby facilitating processing.
In yet another exemplary embodiment of the arrester with fixed series gap, the first discharge body is of an integrally formed structure and the second discharge body is of an integrally formed structure. Thereby being beneficial to improving the structural strength and the conductivity.
In yet another exemplary embodiment of the arrester with fixed series gap, the first discharge rod comprises a first rod part and a first discharge end part. One end of the first rod part is connected with the first conductive block, and the other end of the first rod part is connected with the first discharge end part. The second discharge rod includes a second rod portion and a second discharge end portion. One end of the second rod part is connected with the second conductive block, and the other end of the second rod part is connected with the second discharge end part. A series gap is formed between the first discharge end portion and the second discharge end portion. The first discharge end portion and the second discharge end portion are each spherical so that the series gap can be rapidly broken down under the lightning overvoltage.
In a further exemplary embodiment of the arrester with a fixed series gap, the first discharge rod and the second discharge rod are arranged opposite to each other in the assembly direction. One end of the first rod part, which is connected with the first discharge end part, is bent towards the second rod part, and one end of the second rod part, which is connected with the second discharge end part, is bent towards the first rod part. The structure is simple and facilitates formation of a series gap at the first discharge end and the second discharge end.
In a further exemplary embodiment of the arrester with a fixed series gap, the first discharge end and the second discharge end are arranged offset in the assembly direction. So that a short circuit phenomenon is not easily generated between the first discharge end portion and the second discharge end portion in the presence of rainwater.
In a further exemplary embodiment of the arrester with fixed series gap, the non-linear resistive element comprises several zinc oxide varistor discs stacked in the assembly direction.
In a further exemplary embodiment of the arrester with fixed series gap, the surface of the insulating sheath is convexly provided with a plurality of sheds arranged in the assembly direction. The shed is in the form of a ring extending in a circumferential direction perpendicular to the assembly direction. The insulating outer sleeve is of an integrally formed structure. Thereby increasing the creepage distance of the arrester.
In yet another exemplary embodiment of the arrester with fixed series gap, the arrester with fixed series gap further comprises a first conductive bolt and a second conductive bolt. The first conductive bolt is connected with one end of the first conductive block, which is far away from the insulating part, and is used for connecting a high-voltage lead. The second conductive bolt is connected with one end of the end conductor, which is far away from the nonlinear resistor body, and is used for connecting a supporting cross arm of the electric tower. Thereby facilitating connection with the high voltage conductor and the support cross arm of the electric tower.
In a further exemplary embodiment of the arrester with fixed series gap, the arrester with fixed series gap further comprises several support rods. The supporting rods extend along the assembling direction, one end of each supporting rod is inserted into the first conductive block, the other end of each supporting rod is inserted into the end conductor, and the supporting rods are arranged along the circumferential direction perpendicular to the assembling direction and are embedded in the insulating outer sleeve. Or the arrester with the fixed series gap further comprises an insulating support sleeve, and the insulating support sleeve is wrapped on the circumferential outer sides of the first conducting block, the insulating piece, the second conducting block, the nonlinear resistor and the end conductor and is located on the inner side of the insulating outer sleeve.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.
Fig. 1 is a schematic view of the structure of an exemplary embodiment of a surge arrester with a fixed series gap.
Fig. 2 is a schematic structural view of a first discharge body of the arrester shown in fig. 1.
Fig. 3 is a schematic view of a structure of a second discharge body of the arrester shown in fig. 1.
Fig. 4 is a schematic view of another exemplary embodiment of a surge arrester with a fixed series gap.
Description of the reference symbols
10. First discharge body
11. First conductive block
12. First discharge rod
13. First rod part
14. First discharge end part
20. Insulating member
30. Second discharge body
31. Second conductive block
32. Second discharge rod
33. Second rod part
34. Second discharge end part
40. Nonlinear resistor
41. Zinc oxide pressure sensitive resistance sheet
50. End conductor
60. Insulating jacket
61. Umbrella skirt
71. First conductive bolt
72. Second conductive bolt
80. Support rod
90. Insulating support sleeve
S series gap
A assembly direction
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, wherein the same reference numerals in the drawings denote the same or similar components.
"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.
In this document, "first", "second", etc. do not mean their importance or order, etc., but merely mean that they are distinguished from each other so as to facilitate the description of the document.
For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product.
Fig. 1 is a schematic structural view of an exemplary embodiment of a surge arrester with a fixed series gap. As shown in fig. 1, the arrester with a fixed series gap includes a first discharge body 10, an insulating member 20, a second discharge body 30, a nonlinear resistor 40, an end conductor 50, an insulating sheath 60, a first conductive bolt 71, and a second conductive bolt 72.
Fig. 2 is a schematic view of a structure of a first discharging body of the arrester shown in fig. 1. As shown in fig. 1 and 2, the first discharge body 10 includes a first conductive block 11 and a first discharge rod 12. The first conductive block 11 and the first discharging rod 12 are provided to be fixedly connected and non-detachable. Fig. 3 is a schematic view of a structure of a second discharge body of the arrester shown in fig. 1. As shown in fig. 1 and 3, the second discharging body 30 includes a second conductive block 31 and a second discharging rod 32. The second conductive block 31 and the second discharging rod 32 are provided to be fixedly connected and non-detachable.
Specifically, in the present exemplary embodiment, the first discharge body 10 is a unitary molded structure, and the second discharge body 30 is a unitary molded structure, thereby contributing to improvement of structural strength and conductive performance. The integral molding is, for example, integral casting molding. Without limitation, in other exemplary embodiments, other connection manners that can achieve "fixed connection and non-detachable" may be used, for example, the first conductive block 11 and the first discharge rod 12 may be fixed by welding, and the second conductive block 31 and the second discharge rod 32 may be fixed by welding, but not limited thereto.
As shown in fig. 1, the first conductive piece 11, the insulator 20, the second conductive piece 31, the nonlinear resistor body 40, and the end conductor 50 are stacked in this order in one assembling direction a. The first conductive piece 11, the insulator 20, the second conductive piece 31, the nonlinear resistor 40, and the end conductor 50 are, for example, cylindrical coaxially arranged. The insulating member 20 is used to isolate the first conductive block 11 from the second conductive block 31, so that the first conductive block 11 and the second conductive block 31 cannot be contacted to conduct electricity during normal use. The second conductive bumps 31 are in contact with the nonlinear resistor 40 and are conductive, and the nonlinear resistor 40 is in contact with the end conductors 50. A series gap S is formed between the free end of the first discharge rod 12 and the free end of the second discharge rod 32.
As shown in fig. 1, the insulating sheath 60 is wrapped around the first conductive block 11, the insulator 20, the second conductive block 31, the nonlinear resistor 40, and the end conductor 50 in the circumferential direction, which is perpendicular to the assembly direction a. The insulating sheath 60 is made of, for example, silicone rubber, and in the production process of the arrester, the insulating sheath 60 is integrally molded on the surface of the assembly after the first conductive block 11, the insulator 20, the second conductive block 31, the nonlinear resistor 40, and the end conductor 50 are assembled, for example.
The first conductive bolt 71 is connected to an end of the first conductive block 11 facing away from the insulating member 20 and is used for connecting a high-voltage wire. A second conductive screw 72 is connected to the end of the end conductor 50 facing away from the non-linear resistor 40 and is used to connect to a support cross arm of the electrical tower.
Under the action of lightning overvoltage, the series gap S is instantaneously broken down, the lightning arrester presents low impedance, and lightning current is discharged to the ground; after lightning surge, the power frequency voltage loads the lightning arrester, the resistance of the lightning arrester is instantly increased, the insulation of the series gap S is recovered, and the electric arc is naturally extinguished in a short time.
In the arrester with the fixed series gap according to the exemplary embodiment, the first conductive block 11 and the first discharge rod 12 are fixedly connected and non-detachable, and the second conductive block 31 and the second discharge rod 32 are fixedly connected and non-detachable, so that the extension angles of the first discharge rod 12 and the second discharge rod 32 can be effectively controlled in the process of producing and using the arrester, and the fixed series gap is facilitated.
As shown in fig. 1 to 3, in the exemplary embodiment, first discharge rod 12 includes a first rod portion 13 and a first discharge end portion 14. One end of the first rod part 13 is connected to the first conductive block 11, and the other end of the first rod part 13 is connected to the first discharge end 14. The second discharge rod 32 includes a second rod portion 33 and a second discharge end portion 34. One end of the second rod part 33 is connected to the second conductive block 31, and the other end of the second rod part 33 is connected to the second discharge end part 34. The first discharge end portion 14 and the second discharge end portion 34 form a series gap S therebetween, and the first discharge end portion 14 and the second discharge end portion 34 are each spherical, so that the series gap S can be rapidly broken down by lightning overvoltage.
As shown in fig. 1, in the exemplary embodiment, the first discharge rod 12 and the second discharge rod 32 are oppositely disposed in the fitting direction a. The end of the first rod part 13 connected to the first discharge end 14 is bent toward the second rod part 33, and the end of the second rod part 33 connected to the second discharge end 34 is bent toward the first rod part 13. This structure is simple and facilitates the formation of the series gap S at the first discharge end 14 and the second discharge end 34.
As shown in fig. 1, in the exemplary embodiment, the first discharge end portion 14 and the second discharge end portion 34 are offset in the assembling direction a. So that a short circuit phenomenon is not easily generated between the first discharge end portion 14 and the second discharge end portion 34 in the presence of rain.
As shown in fig. 1, in the exemplary embodiment, the nonlinear resistor body 40 includes a plurality of zinc oxide varistor sheets 41 stacked in the assembling direction a.
As shown in fig. 1, in the exemplary embodiment, the surface of the insulating sheath 60 is convexly provided with a plurality of sheds 61 arranged in the assembly direction a. The shed 61 is annular extending in a circumferential direction perpendicular to the fitting direction a. Thereby increasing the creepage distance of the arrester.
As shown in fig. 1, in the exemplary embodiment, the lightning arrester with fixed series gap further includes a plurality of support rods 80, the support rods 80 extend along the assembly direction a, one end of the support rods 80 is inserted into the first conductive block 11, the other end is inserted into the end conductor 50, and the plurality of support rods 80 are arranged along a circumferential direction perpendicular to the assembly direction a and are embedded in the insulating sheath 60. The support rod 80 serves as a support. Without being limited thereto, in other exemplary embodiments, the surge arrester with fixed series gap, as shown in fig. 4, for example, includes an insulating support sleeve 90. The insulation support sleeve 90 is wrapped around the circumferential outer sides of the first conductive block 11, the insulator 20, the second conductive block 31, the nonlinear resistor 40 and the end conductor 50 and located on the inner side of the insulation outer sleeve 60 to play a supporting role.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above list of details is only for the practical examples of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications, such as combinations, divisions or repetitions of the features, which do not depart from the technical spirit of the present invention, should be included in the scope of the present invention.
Claims (10)
1. Arrester in fixed series gap in area, its characterized in that includes:
a first discharging body (10) comprising a first conductive block (11) and a first discharging rod (12), wherein the first conductive block (11) and the first discharging rod (12) are fixedly connected and are not detachable;
an insulating member (20) superimposed on one side of said first conductive block (11) along an assembly direction (A);
a second discharge body (30) comprising a second conductive block (31) and a second discharge rod (32), said second conductive block (31) and said second discharge rod (32) being arranged in a fixed connection and non-removable, said second conductive block (31) being superimposed on a side of said insulating member (20) facing away from said first conductive block (11) along said assembly direction (a), a series gap (S) being formed between a free end of said first discharge rod (12) and a free end of said second discharge rod (32);
a nonlinear resistor body (40) which is superimposed on a side of the second conductive piece (31) facing away from the insulator (20) in the fitting direction (A);
one end conductor (50) which is laminated on the side of the nonlinear resistor body (40) which is far away from the second conductive block (31) along the assembling direction (A); and
and the insulating outer sleeve (60) is wrapped on the circumferential outer sides of the first conductive block (11), the insulating piece (20), the second conductive block (31), the nonlinear resistor body (40) and the end conductor (50).
2. A surge arrester with fixed series gap according to claim 1, characterized in that the first conductive block (11) and the first discharge rod (12) are fixed by welding, and the second conductive block (31) and the second discharge rod (32) are fixed by welding.
3. A surge arrester with fixed series gap according to claim 1, characterized in that the first discharge body (10) is of unitary construction and the second discharge body (30) is of unitary construction.
4. A surge arrester with fixed series gap according to claim 1, characterized in that the first discharge rod (12) comprises a first rod part (13) and a first discharge end part (14), one end of the first rod part (13) being connected to the first conductive block (11), and the other end of the first rod part (13) being connected to the first discharge end part (14); the second discharge rod (32) comprises a second rod part (33) and a second discharge end part (34); one end of the second rod part (33) is connected with the second conductive block (31), and the other end of the second rod part (33) is connected with the second discharge end part (34); the first discharge end (14) and the second discharge end (34) are both spherical, and the series gap (S) is formed between the first discharge end (14) and the second discharge end (34).
5. A surge arrester with fixed series gap according to claim 4, characterized in that the first discharge rod (12) and the second discharge rod (32) are oppositely arranged in the assembling direction (A), and the end of the first rod part (13) connected to the first discharge end part (14) is bent toward the second rod part (33), and the end of the second rod part (33) connected to the second discharge end part (34) is bent toward the first rod part (13).
6. A surge arrester with fixed series gap according to claim 4, characterized in that the first discharge end (14) and the second discharge end (34) are arranged offset in the assembly direction (A).
7. A arrester with fixed series gap according to claim 1, characterized in that the non-linear resistive body (40) comprises several zinc oxide varistor discs (41) stacked in the assembly direction (a).
8. A arrester with fixed series gap according to claim 1, characterized in that the insulating casing (60) is provided with several sheds (61) projecting from its surface in the assembly direction (a), the sheds (61) being in the form of rings extending in a circumferential direction perpendicular to the assembly direction (a), the insulating casing (60) being of unitary construction.
9. The arrester with fixed series gap of claim 1 further comprising:
a first conductive bolt (71) which is connected with one end of the first conductive block (11) which is far away from the insulating part (20) and is used for connecting a high-voltage lead; and
a second electrically conductive screw (72) which is connected to the end of the end conductor (50) facing away from the non-linear resistor (40) and is used for connecting a support cross arm of an electrical tower.
10. The arrester with fixed series gap according to claim 1, further comprising a plurality of support rods (80), wherein the support rods (80) extend along the assembling direction (a), one end of the support rods (80) is inserted into the first conductive block (11), and the other end is inserted into the end conductor (50), and the plurality of support rods (80) are arranged in a circumferential direction perpendicular to the assembling direction (a) and embedded in the insulating sheath (60), or the arrester with fixed series gap further comprises an insulating support sleeve (90), and the insulating support sleeve (90) is wrapped around the first conductive block (11), the insulating member (20), the second conductive block (31), the nonlinear resistor (40), and the end conductor (50) and is located inside the insulating sheath (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122330635.6U CN217881018U (en) | 2021-09-26 | 2021-09-26 | Lightning arrester with fixed series gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122330635.6U CN217881018U (en) | 2021-09-26 | 2021-09-26 | Lightning arrester with fixed series gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217881018U true CN217881018U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122330635.6U Active CN217881018U (en) | 2021-09-26 | 2021-09-26 | Lightning arrester with fixed series gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217881018U (en) |
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2021
- 2021-09-26 CN CN202122330635.6U patent/CN217881018U/en active Active
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Address after: 214000 b22-a, Wuxi National High tech Industrial Development Zone, Xinwu District, Wuxi City, Jiangsu Province (plant B-2, No. 43 Ximei Road) Patentee after: Siemens Energy Arrester (Wuxi) Co.,Ltd. Address before: 214000 b22-a, Wuxi National High tech Industrial Development Zone, Xinwu District, Wuxi City, Jiangsu Province (plant B-2, No. 43 Ximei Road) Patentee before: Simens Lightning Arrester (Wuxi) Co.,Ltd. |