CN216749481U - Lightning protection device with spiral arc - Google Patents
Lightning protection device with spiral arc Download PDFInfo
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- CN216749481U CN216749481U CN202220482752.6U CN202220482752U CN216749481U CN 216749481 U CN216749481 U CN 216749481U CN 202220482752 U CN202220482752 U CN 202220482752U CN 216749481 U CN216749481 U CN 216749481U
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Abstract
The utility model discloses a lightning protection device with a spiral arc, and aims to solve the problem that in the prior art, an insulator generates a large power frequency current and damages the insulator and hardware fittings due to impact flashover caused by lightning strike. The utility model solves the technical problem by the following technical scheme, which comprises an insulator, wherein a spiral arc ring made of an insulating material is arranged in the length direction of the insulator, and a plurality of discharge beads made of a metal material are arranged on the spiral ring along the spiral line direction of the spiral ring. According to the utility model, the spiral arc ring is arranged around the insulator along the length direction of the insulator, the discharge bead is arranged on the spiral arc ring, the upper end of the insulator is connected with the high-voltage wire, and the lower end of the insulator is grounded, so that when the voltage is over-voltage, the high voltage is discharged step by step through the discharge bead, the function of step by step voltage reduction is achieved, and the purpose of protecting the insulator from flashover is achieved.
Description
Technical Field
The utility model relates to the technical field of lightning protection devices, in particular to a lightning protection device with a spiral arc.
Background
The insulator is a special insulating control and can play an important role in an overhead transmission line. Early-year insulators are mostly used for telegraph poles, and a plurality of disc-shaped insulators are hung at one end of a high-voltage wire connecting tower which is gradually developed, are used for increasing creepage distance and are usually made of glass or ceramics, namely insulators. The insulator should not fail due to various electromechanical stresses caused by changes in environmental and electrical loading conditions, otherwise the insulator will not function significantly and will compromise the service and operational life of the entire line.
In the practical use of the insulator, lightning has great harm to the safe operation of a power transmission line, so that the insulator flashover accident is often caused, and the difficulty is increased for patrolling and finding faults particularly in mountainous areas and areas with inconvenient traffic. The accident in the power grid is mostly caused by the fault of the power transmission line, the fault of the power transmission line is larger in proportion caused by lightning trip, especially in the power transmission line in the mountainous area, the line fault is basically caused by the lightning trip, and according to the operation record, half of the power supply fault of the overhead power transmission line is caused by the lightning, so the fault of the power transmission line can be greatly reduced by preventing the lightning trip, and the occurrence frequency of the accident in the power grid is further reduced.
Impact flashover caused by lightning strike of a power transmission line causes flashover of a line insulator, then generates large power frequency follow current, damages an insulator string and hardware fittings, and can possibly cause the insulator string to be burnt and the overhead conductor to break in serious cases. Therefore, there is a need for a lightning protection device for protecting the insulator from the damage of lightning and improving the operation stability of the power grid.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a lightning protection device with a spiral arc, and aims to overcome the defects that in the prior art, an insulator generates a large power frequency current and damages the insulator and hardware fittings due to impact flashover caused by lightning strike.
In order to achieve the purpose, the utility model provides a lightning protection device with a spiral arc, which comprises an insulator, wherein a spiral arc ring made of an insulating material is arranged in the length direction of the insulator, and a plurality of discharge beads made of a metal material are arranged in the spiral ring along the spiral line direction of the spiral ring.
In order to reduce the problems that a line insulator is subjected to flashover due to impact flashover caused by lightning strike of a power transmission line, and then a large power-frequency follow current is generated, and an insulator string and other electrical equipment are damaged, the insulator is provided with a spiral arc ring along the length direction of the insulator, a discharge bead is arranged on the spiral arc ring, the upper end of the insulator is connected with a high-voltage wire, and the lower end of the insulator is grounded, so that when the insulator is in an overvoltage mode, high voltage is discharged step by step through the discharge bead, a step-by-step voltage reduction function is achieved, and the purpose of protecting the insulator from flashover is achieved.
Further, the both ends of spiral shell arc circle are provided with the fixation clamp, the spiral shell arc circle passes through the fixation clamp with the insulator is connected, the fixation clamp include first splint and with first splint matched with second splint, first splint with spiral shell arc circle fixed connection.
Further, be provided with the erection column on the discharge bead, be provided with the mounting hole on the spiral shell arc circle, the erection column with the mounting hole passes through threaded connection.
Furthermore, the spiral ring is divided into a first spiral ring and a second spiral ring along the length direction of the spiral ring, and the first spiral ring and the second spiral ring are connected through a connecting piece.
Further, the connector includes: the connecting column is arranged on the first spiral ring, and the second spiral ring is provided with a connecting hole matched with the connecting column.
Furthermore, an inwardly-contracted arc section is arranged in the circumferential direction of the connecting column, an arc groove is arranged in the circumferential direction of the connecting hole, and two ends of the arc groove are communicated with the connecting hole; the self-locking device is characterized in that a plurality of self-locking beads and self-locking blocks are arranged in the arc grooves, self-locking grooves parallel to the arc grooves are formed in the second spiral arc ring, perforations are formed in the self-locking grooves and in the connecting line direction of the arc grooves, the self-locking blocks are arranged in the perforations, thrust springs are arranged in the perforations, the two ends of each thrust spring are abutted between the self-locking blocks and the perforations, a self-locking piece and a self-locking spring which can slide along the self-locking grooves are arranged in the self-locking grooves, and blocking portions and loosening portions are arranged on the self-locking piece.
Further, one side of the blocking part facing the through hole is provided with an inclined section.
Furthermore, two ends of the self-locking block in the length direction are round heads.
The utility model can avoid the damage to the insulator caused by impact flashover caused by lightning stroke, plays a role in protecting the insulator and prolongs the service life of the insulator.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a view showing a structure of a discharge bead and a spiral coil according to the present invention;
FIG. 4 is a block diagram of the retaining clip of the present invention;
FIG. 5 is a block diagram of one embodiment of the present invention;
FIG. 6 is a schematic view of the connection between the first coil and the second coil in accordance with the present invention;
FIG. 7 is a cross-sectional view of one embodiment of the present invention;
FIG. 8 is a sectional view taken in the direction A of FIG. 7;
FIG. 9 is a front view of the self-locking element of the present invention;
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Example 1: referring to fig. 1 to 4, in an embodiment of the present invention, a lightning protection device with a spiral arc includes an insulator 1, a spiral arc ring 2 made of an insulating material is disposed in a length direction of the insulator 1, the spiral arc ring 2 may be made of ceramic or rubber or other insulating materials, a plurality of discharge beads 3 made of a metal material are uniformly disposed in the spiral direction of the spiral arc ring 2, a distance between adjacent discharge beads 3 may be set according to an actual situation, a distance between adjacent discharge beads 3 is 1 mm in this embodiment, a mounting post 31 is disposed on the discharge bead 3, a mounting hole 22 is disposed on the spiral arc ring 2, the mounting post 31 is connected to the mounting hole 22 through a thread, and the discharge bead 3 is a steel ball in this embodiment.
The two ends of the spiral arc ring 2 are provided with fixing clamps 21, the spiral arc ring 2 is connected with the insulator 1 through the fixing clamps 21, each fixing clamp 21 comprises a first clamp plate 211 and a second clamp plate 212 matched with the first clamp plate 211, and the first clamp plate 211 is fixedly connected with the spiral arc ring 1; the first clamping plate 211 and the second clamping plate 212 are fixedly connected through bolts.
In the embodiment, in order to reduce the occurrence of the problems that a line insulator is subjected to flashover due to impact flashover caused by lightning strike of a power transmission line, and then a large power frequency follow current is generated, and an insulator string and other electrical equipment are damaged, the insulator is provided with the spiral arc ring 2 along the length direction of the insulator 1, the spiral arc ring 2 is provided with the discharge bead, the upper end of the insulator 1 is connected with the high-voltage wire, and the lower end of the insulator 1 is grounded, so that when the voltage is passed, high voltage is discharged step by step through the discharge bead 3, the function of step-by-step voltage reduction is achieved, and the purpose of protecting the insulator flashover is achieved. Simultaneously can make the loss of discharge bead 3 or take place to destroy owing to discharge step by step, be connected discharge bead 3 with spiral arc circle 2 through erection column 31 and mounting hole 22 for change the convenience that discharge column 3 can be very.
Example 2: referring to fig. 5, the present embodiment has a structure similar to that of embodiment 1, except that the spiral-arc ring 2 is divided into a first spiral-arc ring 23 and a second spiral-arc ring 24 along the length direction thereof, because the first spiral arc 23 and the second spiral arc 24 are separated from the middle of the spiral-arc ring 2, the first spiral-arc ring 23 and the second spiral-arc ring 24 are formed by a plurality of semi-arcs, in order to form a whole by the plurality of semi-arcs, the semi-arcs are connected by a connecting post 25 to form the first spiral-arc ring 23 and the second spiral-arc ring 24, the connecting post 25 is made of an insulating material, the semi-arcs on the first spiral-arc ring 23 and the semi-arcs on the second spiral-arc ring 24 are connected by a connecting piece 4, and the connecting piece 4 can be connected by bolts and threads, or connected by glue.
In this embodiment, in order to install the spiral ring 2 more conveniently on the insulator 1 on the line without installing the spiral ring 2, the spiral ring 2 is set to be the first spiral ring 23 and the second spiral ring 24, so that the first spiral ring 23 and the second spiral ring 24 are connected through the connecting piece from both sides of the insulator 1 during installation.
Example 3: referring to fig. 5 to 9, the present embodiment has a similar structure to that of embodiment 2, except that, in order to facilitate connection between the first spiral-arc ring 23 and the second spiral-arc ring 24, the present embodiment provides the connecting member 4 including a connecting post 41 disposed on the first spiral-arc ring 23, and the second spiral-arc ring 24 is provided with a connecting hole 42 matched with the connecting post 41.
An inwardly contracted arc section 411 is arranged in the circumferential direction of the connecting column 41, an arc groove 43 is arranged in the circumferential direction of the connecting hole 42, two ends of the arc groove 43 are communicated with the connecting hole 42, and the size of the communication position of the connecting hole 42 and the arc groove 43 cannot enable the self-locking ball to slide out of the communication position; a plurality of self-locking beads 431 and self-locking blocks 452 are arranged in the circular arc groove 43, a self-locking groove 44 parallel to the circular arc groove 43 is arranged on the second spiral arc ring 24, a through hole 45 is arranged in the connecting line direction of the self-locking groove 44 and the circular arc groove 43, the self-locking block 452 is arranged in the through hole 45, a thrust spring 451 is arranged in the through hole 45, two ends of the thrust spring 451 are abutted between the self-locking block 452 and the through hole 45, a self-locking piece 441 and a self-locking spring 445 which can slide along the self-locking groove 44 are arranged in the self-locking groove 44, a blocking part 442 and a loosening part 443 are arranged on the self-locking piece 441, and a pushing end 446 is also arranged on the self-locking piece 441.
The side of the blocking portion 42 facing the perforation 45 is provided with an inclined section 444. Both ends of the self-locking block 452 in the length direction are rounded.
In the embodiment, in order to make the connection between the first spiral-arc ring 23 and the second spiral-arc ring 24 more convenient, the embodiment is specially configured, and the working principle of the embodiment is as follows; when the first spiral-arc ring 23 and the second spiral-arc ring 24 are separated, the self-locking piece 441 is pushed upwards under the action of the self-locking spring 445, so that the blocking part 42 on the self-locking piece 441 is abutted to the self-locking piece 452, the self-locking piece 452 pushes the self-locking bead 431 to fill the circular-arc groove 43, the self-locking bead 431 is tightly attached to the self-locking bead 431 and the self-locking piece 452, the self-locking bead 431 is abutted to the communicated part of the circular-arc groove 43 and the connecting hole 42 respectively, and at the moment, a self-locking state is formed wholly; when the first spiral-arc section 23 and the second spiral-arc ring 24 need to be connected, the pushing end 446 is pushed by a hand, the self-locking piece 441 is pushed by the pushing end 446 to slide along the self-locking groove, the self-locking piece 441 overcomes the acting force of the self-locking spring 445 to move, the loosening part 443 can be matched with the self-locking piece 452, the self-locking piece 452 can move into the loosening part 443 through the acting force of the pushing spring 451, the self-locking piece 452 is separated from the self-locking balls 431 to form a space between the self-locking balls 431, the self-locking balls 431 can move in the circular-arc groove 43 at the moment, the self-locking state at the moment is released, the connecting column 41 is inserted into the connecting hole 42 at the moment, the hand is loosened, the self-locking piece 411 is pushed to move through the acting force of the self-locking spring 445, the self-locking piece 452 overcomes the acting force of the pushing spring 451 through the action of the inclined section 444, and the self-locking piece 452 is abutted against the blocking part 42 again, the self-locking block 452 pushes the self-locking bead 431 to fill the arc groove 43, the self-locking bead 431 is tightly attached to the self-locking bead 431 and the self-locking bead 431 is tightly attached to the self-locking block 452, the self-locking beads 431 at two ends of the arc groove 43 are just abutted to the arc section 411 on the connecting column 41 to form a self-locking state, the self-locking beads 431 just clamp the arc section 411 to enable the connecting column 41 to be tightly connected to the connecting hole 42, and further the first spiral ring 23 is tightly connected to the second spiral ring 24; similarly, the self-locking state can be released only by pushing the pushing section 446, so that the connecting column 41 is separated from the connecting hole 42.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a take spiral arc lightning protection device which characterized in that, includes the insulator, be provided with the spiral arc circle of making by insulating material in the length direction of insulator, the spiral arc circle is provided with a plurality ofly along its helix direction and makes the discharge bead by metal material.
2. The lightning protection device with the spiral arc according to claim 1, wherein fixing clips are disposed at two ends of the spiral arc ring, the spiral arc ring is connected with the insulator through the fixing clips, the fixing clips comprise a first clamping plate and a second clamping plate matched with the first clamping plate, and the first clamping plate is fixedly connected with the spiral arc ring.
3. The lightning protection device with the spiral arc of claim 1, wherein the discharge bead is provided with a mounting post, the spiral arc ring is provided with a mounting hole, and the mounting post is in threaded connection with the mounting hole.
4. The lightning protection device with the spiral arc as claimed in any one of claims 1 to 3, wherein the spiral loop is divided into a first spiral loop and a second spiral loop along the length direction of the spiral loop, and the first spiral loop and the second spiral loop are connected through a connecting piece.
5. The lightning protection device of claim 4, wherein the connector comprises: the connecting column is arranged on the first spiral ring, and the second spiral ring is provided with a connecting hole matched with the connecting column.
6. The lightning protection device with the spiral arc according to claim 5, wherein an inwardly contracted arc segment is arranged in the circumferential direction of the connecting column, an arc groove is arranged in the circumferential direction of the connecting hole, and two ends of the arc groove are communicated with the connecting hole; the arc inslot is provided with a plurality of from locking pearl and from the locking piece, be provided with on the second spiral shell arc circle with the arc groove parallels from the locking groove, from the locking groove with be provided with the perforation on the line direction in arc groove, from the locking piece setting is in the perforation, be provided with thrust spring in the perforation, thrust spring's both ends butt is between from the locking piece and perforation, it can follow to be provided with one in the locking groove gliding from locking piece and from the locking spring, be provided with the stop part on the locking piece and loosen the portion.
7. The lightning protection device according to claim 6, wherein the barrier is provided with an inclined section on a side facing the perforation.
8. The lightning protection device with the spiral arc of claim 6, wherein the two ends of the self-locking block in the length direction are round heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220482752.6U CN216749481U (en) | 2022-03-06 | 2022-03-06 | Lightning protection device with spiral arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220482752.6U CN216749481U (en) | 2022-03-06 | 2022-03-06 | Lightning protection device with spiral arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216749481U true CN216749481U (en) | 2022-06-14 |
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ID=81921672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220482752.6U Active CN216749481U (en) | 2022-03-06 | 2022-03-06 | Lightning protection device with spiral arc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216749481U (en) |
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2022
- 2022-03-06 CN CN202220482752.6U patent/CN216749481U/en active Active
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