CN216623908U - End electrode assembly of lightning arrester and lightning arrester with fixed series gap - Google Patents
End electrode assembly of lightning arrester and lightning arrester with fixed series gap Download PDFInfo
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- CN216623908U CN216623908U CN202122912318.5U CN202122912318U CN216623908U CN 216623908 U CN216623908 U CN 216623908U CN 202122912318 U CN202122912318 U CN 202122912318U CN 216623908 U CN216623908 U CN 216623908U
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Abstract
The utility model provides an end electrode assembly of a lightning arrester, which comprises a first conductive block (10), a first electrode (20) and a fastening assembly (30). One end of the first conductive block along the assembling direction (A) is provided with a first inserting structure (11). The first electrode is superposed on one side of the first conductive block, which is close to the first plugging structure along the assembling direction. The side wall of the first electrode facing the first conductive block along the assembling direction is provided with a second plug structure (21). The first inserting structure and the second inserting structure are inserted and matched along the assembling direction so as to limit the relative movement of the first conductive block and the first electrode along the direction perpendicular to the assembling direction. The fastening assembly is capable of clamping the first conductive block and the first electrode in an assembly direction. The end electrode assembly may fix the protruding angle and direction of the first electrode with respect to the first conductive bump. In addition, the present invention also provides a surge arrester with a fixed series gap including the end electrode assembly.
Description
Technical Field
The utility model relates to an end electrode assembly, in particular to an end electrode assembly of an arrester and the arrester with a fixed series gap.
Background
At present, the end electrodes of the surge arrester with a fixed series gap are mounted on the core body of the surge arrester by means of a threaded connection. In the production and use processes of the lightning arrester, the connection mode is easy to change the extending angle and the direction of the end electrode, so that the series gap exceeds the design range, and the lightning arrester cannot work effectively.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide an end electrode assembly of a surge arrester capable of fixing a projecting angle and direction of an end electrode.
It is another object of the present invention to provide a surge arrester with a fixed series gap capable of fixing the extension angle and direction of the end electrodes.
The utility model provides an end electrode assembly of a lightning arrester, which comprises a first conductive block, a first electrode and a fastening assembly. One end of the first conductive block along one assembling direction is provided with a first inserting structure. The first electrode is superposed on one side of the first conductive block close to the first plug-in structure along the assembling direction. The side wall of the first electrode facing the first conductive block along the assembling direction is provided with a second inserting structure. The first inserting structure and the second inserting structure are inserted and matched along the assembling direction so as to limit the relative movement of the first conductive block and the first electrode along the direction perpendicular to the assembling direction. The fastening component can clamp the first conductive block and the first electrode along the assembling direction so as to fix the relative positions of the first conductive block and the first electrode along the assembling direction.
The end electrode assembly of the lightning arrester limits the relative movement of the first conductive block and the first electrode along the direction perpendicular to the assembling direction through the insertion and matching of the first insertion structure and the second insertion structure, thereby fixing the extending angle and the direction of the first electrode relative to the first conductive block.
In another exemplary embodiment of the end electrode assembly of the surge arrester, one of the first and second plug structures is provided as a socket, and the other of the first and second plug structures is provided as a plug matching the shape of the socket. The structure is simple and convenient to process.
In yet another exemplary embodiment of the end electrode assembly of the surge arrester, the fastening assembly includes a first conductive bolt and a first fastening nut. The first conductive bolt penetrates through the first electrode and the first conductive block along the assembling direction. The first conductive bolt has a first nut at an end thereof opposite to the first electrode in the assembly direction on the first conductive block. The first fastening nut is in threaded connection with the first conductive bolt and can clamp the first conductive block and the first electrode with the first nut. The structure is simple and convenient to assemble.
In a further exemplary embodiment of the end electrode assembly of the surge arrester, the first conductive piece has a first fitting recess at an end facing away from the first electrode in the fitting direction. The first nut is located in the first fitting groove. The groove wall of the first assembling groove can abut against the first nut to prevent the first conductive bolt from rotating relative to the first conductive block. Whereby assembly can be facilitated.
In still another exemplary embodiment of the end electrode assembly of the arrester, a section of the insertion groove perpendicular to the assembling direction is a sector ring shape, and a center of the sector ring overlaps with an axis of the first conductive bolt. Thereby facilitating improved structural stability.
The utility model also provides a lightning arrester with a fixed series gap, which comprises the end electrode assembly. The end electrode assembly of the lightning arrester limits the relative movement of the first conductive block and the first electrode along the direction perpendicular to the assembling direction through the insertion and matching of the first insertion structure and the second insertion structure, thereby fixing the extending angle and the direction of the first electrode relative to the first conductive block.
In another exemplary embodiment of the surge arrester with a fixed series gap, the surge arrester further includes an insulating member, a second conductive block, a second electrode, a nonlinear resistor, an end conductor, and an insulating sheath. The insulating part is arranged on one side of the first conductive block, which is far away from the first electrode, along the assembling direction. The second conductive block is arranged on one side, away from the first conductive block, of the insulating part along the assembling direction. The second electrode is connected with the second conductive block. A series gap is formed between the first electrode and the second electrode. The nonlinear resistor body is arranged on one side, away from the insulating piece, of the second conductive block along the assembling direction. The end conductor is arranged on one side of the nonlinear resistor body, which is far away from the second conductive block, along the assembling direction. 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.
In another exemplary embodiment of the surge arrester with fixed series gap, the surge arrester further comprises a second electrically conductive bolt and a second fastening nut. The second conductive bolt penetrates through the end conductor along the assembling direction. One end of the second conductive bolt close to the nonlinear resistor body in the assembling direction is provided with a second nut. The second fastening nut is in threaded connection with the second conductive bolt and can clamp the end conductor with the second nut. The end portion conductor has a second fitting recess at an end thereof adjacent to the nonlinear resistor body in the fitting direction. The second nut is positioned in the second assembling groove. The groove wall of the second fitting groove can abut against the second nut to prevent the second conductive bolt from rotating relative to the end conductor. Whereby assembly can be facilitated.
In yet another exemplary embodiment of the arrester with fixed series gap, the arrester further comprises a number of support rods. The support bar extends in the assembly direction. One end of the support rod is inserted into the first conductive block, and the other end of the support rod is inserted into the end conductor. The plurality of support rods are arranged along the circumferential direction perpendicular to the assembling direction and are embedded in the insulating outer sleeve. Whereby the stability of the structure can be improved.
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 structural view of an exemplary embodiment of an end electrode assembly of a surge arrester.
Fig. 2 is an exploded view of a partial structure of an end electrode assembly of the arrester shown in fig. 1.
Fig. 3 is a schematic view of a structure of a first conductive block of an end electrode assembly of the arrester shown in fig. 1.
Fig. 4 is a schematic view of a structure of a first electrode of an end electrode assembly of the arrester shown in fig. 1.
Fig. 5 is a schematic structural view of an exemplary embodiment of a surge arrester with a fixed series gap.
Description of the reference symbols
100 end electrode assembly
10 first conductive block
11 first plug-in structure
13 first fitting recess
20 first electrode
21 second plug-in structure
30 fastening assembly
31 first conductive bolt
32 first nut
33 first fastening nut
51 insulating member
52 second conductive block
53 second electrode
54 nonlinear resistor
541 zinc oxide pressure sensitive resistance chip
55 end conductor
56 second fitting groove
60 insulating coat
71 second conductive bolt
72 second nut
73 second fastening nut
81 first cushion block
82 second cushion block
90 support bar
A assembly direction
Detailed Description
In order to make the technical features, objects and effects of the utility model more clearly understandable, embodiments of the utility model will now be described with reference to the accompanying drawings, in which like reference numerals refer to identical or structurally similar but functionally identical 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 importance or order thereof, but are used to distinguish one from another so as to facilitate description of the document.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product.
Fig. 1 is a schematic structural view of an exemplary embodiment of an end electrode assembly of a surge arrester. Fig. 2 is an exploded view of a partial structure of an end electrode assembly of the arrester shown in fig. 1. As shown in fig. 1 and 2, an end electrode assembly 100 of a surge arrester includes a first conductive block 10, a first electrode 20, and a fastening assembly 30.
As shown in fig. 1 and 2, the first conductive block 10 has a first plug structure 11 at one end in an assembly direction a. The first electrode 20 is superimposed on a side of the first conductive block 10 close to the first plug structure 11 in the mounting direction a. The first electrode 20 has a second plug-in connection 21 in the mounting direction a toward the side wall of the first conductive block 10. The first and second insertion structures 11 and 21 are insertion-fitted in the fitting direction a to restrict relative movement (including rotational and linear movements) of the first conductive block 10 and the first electrode 20 in a direction perpendicular to the fitting direction a.
Specifically, as shown in fig. 1 and 2, in the present exemplary embodiment, the first plug structure 11 is provided as a socket, and the second plug structure 21 is provided as a plug matching the shape of the socket. However, in other exemplary embodiments, the second plug structure 21 may be a socket, and the first plug structure 11 may be a plug matching the shape of the socket. The structure is simple and convenient to process.
As shown in fig. 1, the fastening assembly 30 can clamp the first conductive block 10 and the first electrode 20 in the fitting direction a to fix the relative positions of the first conductive block 10 and the first electrode 20 in the fitting direction a.
Specifically, as shown in fig. 1 and 2, in the present exemplary embodiment, the fastening assembly 30 includes one first conductive bolt 31 and one first fastening nut 33. The first conductive bolt 31 is inserted through the first electrode 20 and the first conductive block 10 in the fitting direction a. The end of the first conductive bolt 31 on the opposite side of the first conductive block 10 from the first electrode 20 in the fitting direction a has a first nut 32. The first fastening nut 33 is screwed to the first conductive bolt 31 and can clamp the first conductive block 10 and the first electrode 20 with the first nut 32. The first conductive bolt 31 is used for connecting a high-voltage wire in use. The structure is simple and convenient to assemble.
The end electrode assembly of the lightning arrester limits the relative movement of the first conductive block and the first electrode along the direction perpendicular to the assembling direction through the insertion and matching of the first insertion structure and the second insertion structure, thereby fixing the extending angle and the direction of the first electrode relative to the first conductive block.
As shown in fig. 1 and 2, in the exemplary embodiment, the first conductive piece 10 has a first fitting recess 13 at an end facing away from the first electrode 20 in the fitting direction a. The first nut 32 is seated in the first fitting groove 13. The groove wall of the first fitting groove 13 can abut against the first nut 32 to prevent the first conductive bolt 31 from rotating relative to the first conductive block 10. Thereby preventing the first conductive bolt 31 from rotating during the assembly process and facilitating the tightening of the first fastening nut 33.
Fig. 3 is a schematic view of a structure of a first conductive block of an end electrode assembly of the arrester shown in fig. 1. Fig. 4 is a schematic view of a structure of a first electrode of an end electrode assembly of the arrester shown in fig. 1. As shown in fig. 3 and 4, in the exemplary embodiment, the cross section perpendicular to the assembly direction a of the first plug structure 11 provided as a socket is a sector ring, and the center of the sector ring overlaps with the axis of the first conductive bolt 31. The second plug-in connection 21 provided as a plug is correspondingly sector-shaped in cross section. Therefore, when the first conductive block 10 and the first electrode 20 rotate relatively in advance, the stress of the stress surface of the slot is uniform, and the stability of the structure is improved.
The present invention also provides a surge arrester with a fixed series gap, and fig. 5 is a schematic structural view of an exemplary embodiment of the surge arrester with a fixed series gap, and as shown in fig. 5, the surge arrester with a fixed series gap includes an end electrode assembly 100 shown in fig. 1, an insulating member 51, a second conductive block 52, a second electrode 53, a nonlinear resistor 54, an end conductor 55, and an insulating sheath 60.
As shown in fig. 5, the first conductive piece 10, the insulator 51, the second conductive piece 52, the nonlinear resistor body 54, and the end conductor 55 are stacked in this order in the assembly direction a. The insulator 51, the second conductive piece 52, and the nonlinear resistor 54 are, for example, cylindrical coaxially arranged. The insulating member 51 is used to separate the first conductive block 10 from the second conductive block 52, so that the first conductive block 10 and the second conductive block 52 cannot be contacted to conduct electricity during normal use. The second conductive bumps 52 are in contact with the nonlinear resistor 54 and are conductive, and the nonlinear resistor 54 and the end conductors 55 are conductive. The second electrode 53 is connected to the second conductive block 52. A series gap is formed between the first electrode 20 and the second electrode 53. The nonlinear resistor body 54 includes, for example, a plurality of zinc oxide varistor sheets 541 stacked in the mounting direction a.
The insulating outer jacket 60 is wrapped around the first conductive block 10, the insulator 51, the second conductive block 52, the nonlinear resistor 54, and the end conductor 55 in the circumferential direction, which is perpendicular to the assembly direction a. The insulating sheath 60 is made of, for example, silicon rubber, and the insulating sheath 60 is integrally formed on the surface of the assembly body, for example, after the other components are assembled in the arrester manufacturing process, but is not limited thereto. In the exemplary embodiment, the surface of the insulating sheath 60 is convexly provided with a plurality of sheds aligned in the assembly direction a. The shed is in the form of a ring extending in a circumferential direction perpendicular to the assembly direction a. Thereby increasing the creepage distance of the arrester.
As shown in fig. 5, in the present exemplary embodiment, the surge arrester further includes a second conductive bolt 71 and a second fastening nut 73. The second conductive bolt 71 is inserted through the end conductor 55 in the fitting direction a. One end of the second conductive bolt 71 in the fitting direction a near the nonlinear resistor 54 has a second nut 72. The second fastening nut 73 is screwed to the second conductive bolt 71 and can clamp the end conductor 55 with the second nut 72. In use, the second electrically conductive bolt 71 is used to connect the support cross-arm of an electrical tower.
Under the action of lightning overvoltage, the series gap 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 is recovered, and the electric arc is naturally extinguished in a short time.
As shown in fig. 5, in the exemplary embodiment, the end conductor 55 has one second fitting groove 56 at one end thereof in the fitting direction a close to the nonlinear resistor body 54. The second nut 72 is seated in the second fitting groove 56. The groove wall of the second fitting groove 56 can abut against the second nut 72 to prevent the second conductive bolt 71 from rotating relative to the end conductor 55. Whereby assembly can be facilitated.
As shown in fig. 5, in the exemplary embodiment, the arrester further includes a plurality of support rods 90 (only two of which are visible in the figure). The support rod 90 is made of an insulating material and extends in the assembling direction a. One end of the support rod 90 is inserted into the first conductive block 10, and the other end is inserted into the end conductor 55. A plurality of support rods 90 are arranged in a circumferential direction perpendicular to the assembling direction a and embedded in the insulating sheath 60. The support bar 90 serves as a support. But not limited thereto, in other exemplary embodiments, a plurality of support rods 90 may be replaced with an insulating support sleeve. The insulation support sleeve is wrapped on the circumferential outer side of the first conductive block 10, the insulator 51, the second conductive block 52, the nonlinear resistor 54 and the end conductor 55 and is located on the inner side of the insulation outer sleeve 60 to play a supporting role. In the illustrated embodiment, the number of support rods 90 may be adjusted as desired.
As shown in fig. 5, in the exemplary embodiment, a first pad 81 that can conduct electricity is provided between the first conductive piece 10 and the insulating member 51, and a second pad 82 that can conduct electricity is provided between the nonlinear resistor 54 and the end conductor 55, but the present invention is not limited thereto, and in other exemplary embodiments, the first pad 81 and the second pad 82 may not be provided.
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-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications such as combinations, divisions or repetitions of features, which do not depart from the technical spirit of the present invention, should be included in the scope of the present invention.
Claims (9)
1. An end electrode assembly for a lightning arrester, comprising:
a first conductive block (10) having a first plug-in structure (11) at one end in an assembly direction (A);
a first electrode (20) which is superimposed on a side of the first conductive block (10) which is close to the first plug-in structure (11) in the assembly direction (A), wherein a side wall of the first electrode (20) facing the first conductive block (10) in the assembly direction (A) is provided with a second plug-in structure (21); the first plug structure (11) and the second plug structure (21) are in plug fit along the assembly direction (A) to limit relative movement of the first conductive block (10) and the first electrode (20) along a direction perpendicular to the assembly direction (A); and
a fastening assembly (30) capable of clamping the first conductive block (10) and the first electrode (20) along the fitting direction (A) to fix the relative positions of the first conductive block (10) and the first electrode (20) along the fitting direction (A).
2. The end electrode assembly of a surge arrester according to claim 1, characterized in that one of the first plug structure (11) and the second plug structure (21) is provided as a socket and the other of the first plug structure (11) and the second plug structure (21) is provided as a plug which is form-fitted to the socket.
3. The end electrode assembly of a lightning arrester according to claim 2, characterized in that the fastening assembly (30) comprises:
a first conductive bolt (31) passing through the first electrode (20) and the first conductive block (10) in the assembling direction (A), an end of the first conductive bolt (31) on the opposite side of the first electrode (20) from the first conductive block (10) in the assembling direction (A) having a first nut (32), and
a first fastening nut (33) screwed to the first conductive bolt (31) and capable of clamping the first conductive block (10) and the first electrode (20) with the first nut (32).
4. An end electrode assembly of a lightning arrester according to claim 3, characterized in that the end of the first conducting block (10) facing away from the first electrode (20) in the mounting direction (A) has a first mounting recess (13), the first nut (32) being located in the first mounting recess (13), the groove wall of the first mounting recess (13) being able to abut against the first nut (32) to prevent the first conducting bolt (31) from rotating relative to the first conducting block (10).
5. End electrode assembly of a lightning arrester according to claim 3, characterized in that the cross-section of the insertion slot perpendicular to the assembly direction (A) is sector-shaped with the centre of a sector overlapping the axis of the first conductive bolt (31).
6. An arrester with a fixed series gap comprising an end electrode assembly as claimed in any one of claims 1 to 5.
7. An arrester with fixed series gap as claimed in claim 6, characterized in that the arrester further comprises:
an insulating element (51) arranged in the mounting direction (A) on a side of the first conductive piece (10) facing away from the first electrode (20);
a second conductive block (52) arranged on a side of the insulating member (51) facing away from the first conductive block (10) in the fitting direction (a);
a second electrode (53) connected to said second conductive block (52), said first electrode (20) and said second electrode (53) forming a series gap therebetween;
a nonlinear resistor (54) disposed on a side of the second conductive piece (52) facing away from the insulator (51) in the mounting direction (a);
one end conductor (55) provided on a side of the nonlinear resistor body (54) facing away from the second conductive block (52) in the mounting direction (a); and
and the insulating outer sleeve (60) is wrapped on the circumferential outer sides of the first conductive block (10), the insulating piece (51), the second conductive block (52), the nonlinear resistor body (54) and the end conductor (55).
8. The surge arrester of claim 7 further comprising:
a second conductive bolt (71) that is inserted through the end conductor (55) in the fitting direction (a), one end of the second conductive bolt (71) that is close to the nonlinear resistor (54) in the fitting direction (a) having a second nut (72); and
and a second fastening nut (73) which is screwed to the second conductive bolt (71) and is capable of clamping the end conductor (55) with the second nut (72), wherein the end conductor (55) has a second fitting groove (56) at an end thereof in the fitting direction (A) close to the nonlinear resistor body (54), the second nut (72) is located in the second fitting groove (56), and a groove wall of the second fitting groove (56) is capable of abutting against the second nut (72) to prevent the second conductive bolt (71) from rotating relative to the end conductor (55).
9. An arrester with fixed series gap according to claim 7, characterized in that the arrester further comprises a plurality of support rods (90), the support rods (90) extending in the assembly direction (A), one end of the support rods (90) being inserted in the first conductive block (10) and the other end being inserted in the end conductor (55), the plurality of support rods (90) being arranged in a circumferential direction perpendicular to the assembly direction (A) and being embedded in the insulating casing (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122912318.5U CN216623908U (en) | 2021-11-25 | 2021-11-25 | End electrode assembly of lightning arrester and lightning arrester with fixed series gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122912318.5U CN216623908U (en) | 2021-11-25 | 2021-11-25 | End electrode assembly of lightning arrester and lightning arrester with fixed series gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216623908U true CN216623908U (en) | 2022-05-27 |
Family
ID=81700223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122912318.5U Active CN216623908U (en) | 2021-11-25 | 2021-11-25 | End electrode assembly of lightning arrester and lightning arrester with fixed series gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216623908U (en) |
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2021
- 2021-11-25 CN CN202122912318.5U patent/CN216623908U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
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. |
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| CP01 | Change in the name or title of a patent holder |