CN211266426U - Lightning-protection power transmission conductor protection device - Google Patents
Lightning-protection power transmission conductor protection device Download PDFInfo
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- CN211266426U CN211266426U CN202020321659.8U CN202020321659U CN211266426U CN 211266426 U CN211266426 U CN 211266426U CN 202020321659 U CN202020321659 U CN 202020321659U CN 211266426 U CN211266426 U CN 211266426U
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Abstract
The utility model discloses a lightning protection electricity shielding failure transmission line protection device, including the conductive needle, insulation support, the needle body bottom plate, the lightning conductor, preformed armor rod protects lines and counter weight hammer, the conductive needle includes conductive needle upper segment and conductive needle hypomere, the top of conductive needle upper segment is located to the needle point of conductive needle, the insulation support is located to the conductive needle upper segment, the clearance has between conductive needle upper segment and the insulation support, preformed armor rod protects the periphery of lines winding at the lightning conductor, the conductive needle hypomere is fixed on the needle body bottom plate, two pipe clamps protect the both ends centre gripping of lines with preformed armor rod, the both ends of needle body bottom plate are fixed together with two pipe clamps respectively, the bottom that is located preformed armor rod between two pipe clamps protects the lines is fixed with counterweight construction bolt, a counter weight hammer is connected respectively on counterweight construction bolt's both sides, make through the counter weight hammer keep perpendicular upwards. The utility model discloses can solve the thunder and lightning and around attacking the problem that transmission line caused the tripping operation.
Description
Technical Field
The utility model relates to a power equipment technical field especially relates to a lightning protection electricity is around hitting transmission line protection device.
Background
At present, in order to protect the conducting wire of the power transmission line from being struck by lightning (shielding failure), a lightning conductor is generally erected. The seventh item in national grid company enterprise standard Q/GDW 11452-2015 lightning protection guide rule for overhead transmission lines: the lightning protection design of the power transmission line is firstly realized by erecting a lightning conductor. The national electric power industry standard DL/T620 and 1997 article 6.1.2 of overvoltage protection and insulation coordination of AC electric installation: 110KV is provided with lightning conductors along the whole line, and double lightning conductors are provided along the whole line in mountainous areas and areas with special strong lightning activities; double lightning protection lines are erected on the whole line of 220KV and above lines.
However, the lightning-induced capacity of the lightning conductor is insufficient, and the lightning damage of the power transmission line is still tripped a lot after the power transmission line adopts various conventional lightning protection measures. According to the statistical result of the trip times of power transmission lines in foreign countries and China's Fujian, Guangdong, Hubei, northeast, North China and the like, the trip times of lightning damage all account for the first of the total trip times among the trip times caused by various reasons. Practice proves that due to the fact that the lightning-arrest wire has insufficient lightning-arrest capacity, the power transmission wire cannot be well protected, and therefore tripping caused by lightning shielding on the power transmission wire is still a technical problem to be solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lightning protection electricity is around attacking transmission of electricity wire protection device to solve the thunder and lightning and around attacking the problem that transmission of electricity wire caused the tripping operation.
A lightning-protection shielding-around power transmission wire protection device comprises a conductive needle, an insulating sleeve, a needle body bottom plate, a lightning conductor, a preformed armor rod and a counterweight hammer, wherein the conductive needle comprises a conductive needle upper section and a conductive needle lower section, a needle point of the conductive needle is arranged at the top of the conductive needle upper section, the conductive needle upper section is arranged in the insulating sleeve, the bottom of the conductive needle upper section is fixed with the insulating sleeve through a fastening screw, a gap is formed between the conductive needle upper section and the insulating sleeve, the preformed armor rod is wound around the periphery of the lightning conductor, the conductive needle lower section is fixed on the needle body bottom plate, two pipe clamps clamp the two ends of the preformed armor rod, the two ends of the needle body bottom plate are respectively fixed with the two pipe clamps, and a counterweight mounting bolt is fixed at the bottom of the preformed armor rod between the two pipe clamps, and two sides of the counterweight mounting bolt are respectively connected with a counterweight hammer, and the conductive needle is kept vertically upwards through the counterweight hammer.
According to the lightning protection shielding power transmission conductor protection device provided by the utility model, the preformed armor rod is wound on the periphery of the traditional lightning conductor, the two ends of the preformed armor rod are clamped by the two pipe clamps, then a needle body bottom plate is fixed between the two pipe clamps, a conductive needle is arranged on the needle body bottom plate, the upper section of the conductive needle is arranged in the insulating sleeve, the combination of the insulating tube type lightning conductor and the lightning conductor is realized, the insulating sleeve is utilized to block the disappearance of space charges, so that the electric field of the local area near the upper section of the conducting pin is not weakened, the air near the needle point is kept to be continuously ionized, the space charges are continuously generated, the upward and upward pilot discharge is continuously increased, and the lightning attracting capability of the lightning conductor is obviously enhanced, and the lightning protection scope and the lightning protection effect are also promoted, so that the problem of tripping caused by lightning shielding failure on the power transmission conductor can be effectively solved.
Additionally, according to the utility model provides a lightning protection electricity is around hitting transmission line protection device can also have following additional technical characterstic:
furthermore, the surface of the preformed armor rod is provided with a concave curve stripe, and the surface of the pipe clamp contacted with the preformed armor rod is provided with a convex curve stripe matched with the concave curve stripe.
Furthermore, the upper section of the conductive needle is in threaded connection with the lower section of the conductive needle, an external thread is arranged at the bottom of the upper section of the conductive needle, and an internal thread matched with the external thread is arranged at the top of the lower section of the conductive needle.
Further, the length of the upper section of the conductive pin is smaller than that of the lower section of the conductive pin.
Further, the gap between the upper section of the conductive needle and the insulating sleeve is 1-5 mm.
Furthermore, the outer side of the insulating sleeve is provided with a rain-proof skirt edge which inclines downwards, the inner diameter of the rain-proof skirt edge is the same as the outer diameter of the insulating sleeve, and the rain-proof skirt edge is bonded with the insulating sleeve.
Further, the number of the rainproof skirt edges is 2-4.
Further, the pipe clamp is clamped and fixed on the preformed armor rod through a fastening bolt, and the fastening bolt penetrates through the needle body bottom plate.
Furthermore, the counterweight is connected with the counterweight mounting bolt through a galvanized steel strand.
Furthermore, the conductive pin is made of any one of steel, aluminum alloy and copper, the height of the conductive pin is 0.3-3 m, and the diameter of the conductive pin is 10-20 mm.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a lightning protection power transmission line protection device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are for illustrative purposes only and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a lightning protection device for a power transmission line according to an embodiment of the present invention includes a conductive pin 11, an insulating sleeve 12, a pin body bottom plate 13, a lightning conductor 14, a preformed armor rod 15, and a counterweight hammer 16.
The conductive pin 11 comprises a conductive pin upper section 111 and a conductive pin lower section 112, and the needle point of the conductive pin 11 is arranged at the top of the conductive pin upper section 111. Preferably, the length of the conductive pin upper section 111 is smaller than the length of the conductive pin lower section 112.
The conductive pin 11 is made of any one of steel, aluminum alloy and copper, the total height of the conductive pin 11 is determined by the voltage grade and the span length of the power transmission line, preferably, the height of the conductive pin 11 is 0.3-3 m, and the diameter of the conductive pin is 10-20 mm. For example, the height of the conductive pin 11 is 2m, the height of the upper conductive pin segment 111 is 0.8m, and the height of the lower conductive pin segment 112 is 1.2 m.
The upper conductive needle section 111 is in threaded connection with the lower conductive needle section 112, the bottom of the upper conductive needle section 111 is provided with an external thread, and the top of the lower conductive needle section 112 is provided with an internal thread matched with the external thread to realize threaded connection of the upper conductive needle section and the lower conductive needle section.
The conductive pin upper section 111 is arranged in the insulating sleeve 12, a gap is formed between the conductive pin upper section 111 and the insulating sleeve 12, and preferably, the gap between the conductive pin upper section 111 and the insulating sleeve 12 is 1-5 mm. The height of the insulating sleeve 12 is slightly higher than the height of the upper segment 111 of the conductive pin, for example, the height of the upper segment 111 of the conductive pin is 0.8m, and the height of the insulating sleeve 12 is 0.815 m.
The bottom of the upper section 111 of the conductive pin is fixed with the insulating sleeve 12 by a fastening screw 17. In addition, the bottom of the upper section 111 of the conductive pin and the insulating sleeve 12 can be adhered together by strong glue on the basis of the fastening screw 17.
The preformed armor rod 15 is wound on the periphery of the lightning conductor 14, and the preformed armor rod 15 and the lightning conductor 14 can form a rigid structure together. The pre-twisted wire protecting strip 15 is arranged to reduce the torsion force applied to the root of the conductive pin 111.
The conductive pin lower segment 112 is fixed to the pin body bottom plate 13, and may be specifically fixed to the pin body bottom plate 13 by bolts.
The two pipe clamps 18 clamp the two ends of the pre-twisted wire protecting strip 15, and the two ends of the needle body bottom plate 13 are respectively fixed with the two pipe clamps 18. Specifically, the tube clamp 18 is clamped and fixed on the preformed armor rod 15 through a fastening bolt 20, and the fastening bolt 20 penetrates through the needle body bottom plate 13, so that the preformed armor rod 15, the tube clamp 18 and the needle body bottom plate 13 are fixed.
Preferably, the surface of the preformed armor rod 15 is provided with a concave curved stripe, and the surface of the pipe clamp 18 contacting with the preformed armor rod 18 is provided with a convex curved stripe matching with the concave curved stripe.
A counterweight mounting bolt 19 is fixed at the bottom of the preformed armor rod 15 between the two pipe clamps 18, specifically, the counterweight mounting bolt 19 and the conductive pin 11 are correspondingly arranged, two sides of the counterweight mounting bolt 19 are respectively connected with a counterweight hammer 16, and the conductive pin 11 is kept vertically upward by the counterweight hammer 16. Specifically, the counterweight 16 is connected with the counterweight mounting bolt 19 through a galvanized steel strand 161.
In this embodiment, a rain-proof skirt 21 is disposed at the outer side of the insulating sleeve 12 and inclines downward, the inner diameter of the rain-proof skirt 21 is the same as the outer diameter of the insulating sleeve 12, and the rain-proof skirt 21 and the insulating sleeve 12 are bonded together. Preferably, the number of the rainproof skirts 21 is 2-4. The material of the rainproof skirt 21 can be epoxy glass steel plate with the thickness of 4-6 mm. The outer diameter of the rain-proof skirt 21 can be selected from 100 mm-150 mm.
According to the lightning protection device for the power transmission line around the lightning conductor provided by the embodiment, the preformed armor rod 15 is wound on the periphery of the conventional lightning conductor 14, two ends of the preformed armor rod 15 are clamped by two pipe clamps 18, then a needle body bottom plate 13 is fixed between the two pipe clamps 18, the conductive needle 11 is arranged on the needle body bottom plate 13, and the upper section 111 of the conductive needle is arranged in the insulating sleeve 12, thus realizing the combination of the insulating tube type lightning rod and the lightning conductor, utilizing the insulating sleeve 12 to block the disappearance of space charge, ensuring that the electric field of the local area near the upper section 111 of the conductive needle is not weakened, keeping the air near the needle point to be ionized continuously, generating space charge continuously, promoting the continuous increase of upward front-to-front pilot discharge, obviously enhancing the capability of attracting lightning stroke, and the lightning protection scope and the lightning protection effect are also promoted, so that the problem of tripping caused by lightning shielding failure on the power transmission conductor can be effectively solved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A lightning-protection electric shielding failure transmission wire protection device is characterized by comprising a conductive needle, an insulating sleeve, a needle body bottom plate, a lightning conductor, a pre-twisted wire protection strip and a counterweight hammer, wherein the conductive needle comprises a conductive needle upper section and a conductive needle lower section, a needle point of the conductive needle is arranged at the top of the conductive needle upper section, the conductive needle upper section is arranged in the insulating sleeve, the bottom of the conductive needle upper section is fixed with the insulating sleeve through a fastening screw, a gap is formed between the conductive needle upper section and the insulating sleeve, the pre-twisted wire protection strip is wound on the periphery of the lightning conductor, the conductive needle lower section is fixed on the needle body bottom plate, two pipe clamps clamp the two ends of the pre-twisted wire protection strip, the two ends of the needle body bottom plate are respectively fixed with the two pipe clamps together, and an object mounting bolt is fixed at the bottom of the pre-twisted wire protection strip between the two counterweight pipe clamps, and two sides of the counterweight mounting bolt are respectively connected with a counterweight hammer, and the conductive needle is kept vertically upwards through the counterweight hammer.
2. The lightning protection surround-strike power conductor protection device according to claim 1, wherein the surface of the preformed armor wire strip is provided with concave curved stripes, and the surface of the pipe clamp in contact with the preformed armor wire strip is provided with convex curved stripes matching the concave curved stripes.
3. The lightning protection power shielding failure transmission conductor protection device according to claim 1, wherein the upper section of the conductive pin is in threaded connection with the lower section of the conductive pin, the bottom of the upper section of the conductive pin is provided with an external thread, and the top of the lower section of the conductive pin is provided with an internal thread matched with the external thread.
4. The lightning protection electrical surround stroke power conductor protection device of claim 3, wherein the length of the upper segment of the conductive pin is less than the length of the lower segment of the conductive pin.
5. The lightning protection power shielding failure transmission conductor protection device according to claim 1, wherein a gap between the upper section of the conductive pin and the insulating sleeve is 1-5 mm.
6. The lightning protection power shielding failure transmission conductor protection device according to claim 1, wherein the outer side of the insulating sleeve is provided with a rain skirt which is inclined downwards, the inner diameter of the rain skirt is the same as the outer diameter of the insulating sleeve, and the rain skirt is bonded with the insulating sleeve.
7. The lightning protection power shielding failure transmission conductor protection device according to claim 6, wherein the number of the rain-proof skirts is 2-4.
8. The lightning protection surround-strike power conductor protection device according to claim 1, wherein the tube clamp is clamped and fixed on the pre-twisted wire guard bar by a fastening bolt, and the fastening bolt penetrates through the needle body bottom plate.
9. The lightning protection surround-strike power conductor protection device of claim 1, wherein the counterweight is bolted to the counterweight mounting bolts by a self-contained galvanized steel strand.
10. The lightning protection power shielding failure transmission conductor protection device according to claim 1, wherein the conductive pins are made of any one of steel, aluminum alloy and copper, the height of the conductive pins is 0.3-3 m, and the diameter of the conductive pins is 10-20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020321659.8U CN211266426U (en) | 2020-03-16 | 2020-03-16 | Lightning-protection power transmission conductor protection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020321659.8U CN211266426U (en) | 2020-03-16 | 2020-03-16 | Lightning-protection power transmission conductor protection device |
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| CN211266426U true CN211266426U (en) | 2020-08-14 |
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| CN202020321659.8U Active CN211266426U (en) | 2020-03-16 | 2020-03-16 | Lightning-protection power transmission conductor protection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116564632A (en) * | 2023-07-10 | 2023-08-08 | 山东莱芜电瓷有限公司 | Adjustable lightning arrester |
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2020
- 2020-03-16 CN CN202020321659.8U patent/CN211266426U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116564632A (en) * | 2023-07-10 | 2023-08-08 | 山东莱芜电瓷有限公司 | Adjustable lightning arrester |
| CN116564632B (en) * | 2023-07-10 | 2023-09-29 | 山东莱芜电瓷有限公司 | Adjustable lightning arrester |
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