CN112600147A - Active safety protection device for distribution network pole and installation method - Google Patents
Active safety protection device for distribution network pole and installation method Download PDFInfo
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- CN112600147A CN112600147A CN202011509636.0A CN202011509636A CN112600147A CN 112600147 A CN112600147 A CN 112600147A CN 202011509636 A CN202011509636 A CN 202011509636A CN 112600147 A CN112600147 A CN 112600147A
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- bolt
- pole
- gland
- distribution network
- shear bolt
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/04—Arrangements or devices for relieving mechanical tension
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Abstract
The invention provides an active safety protection device for a distribution network pole and an installation method thereof. According to the technical scheme, when the power transmission line is subjected to strong external force such as tree lodging and extreme weather, the line can be effectively disconnected, unloading and unloading are carried out, and the electric pole is prevented from being inclined or broken. The invention has the advantages of safety, reliability, simple structure, simple installation, convenient maintenance and low cost, and is particularly suitable for the southwest mountain forest area of China.
Description
Technical Field
The invention relates to an active safety protection device for a distribution network pole and an installation method, and belongs to the technical field of safety protection of power equipment.
Background
The electric pole is used as an important support for electric energy transmission in a distribution network system, is a key facility for supporting a power transmission line, and ensures that the safe and reliable operation of the electric pole is always the most important factor for the work of a power system. The distribution network system is generally not high due to low voltage level, and the distribution network system is mainly in two types of 10 meters and 12 meters. However, when fir trees, bamboo forests and other high-growth-rate and high-breakage-prone tree species are arranged on two sides of the distribution network line channel, trees are easily broken or bent and pressed on the line in the weather of strong wind or ice and snow disasters, so that the line is stressed too much, and the electric pole is inclined or broken. In the southwest mountain areas of China, the phenomenon is more common. After the pole inclines or the pole is disconnected, because its transportation is inconvenient, including the construction degree of difficulty is big, compare other types of grid fault, the impaired restoration degree of difficulty of pole is bigger, and the power off time is longer, and economic loss is heavier.
Aiming at the problems, the current engineering application field mainly increases the investment and improves the equipment strength to improve the disaster resistance. However, large-scale and large-scale equipment reconstruction requires huge investment cost, and the general applicability of equipment reconstruction projects is limited due to the difference of disastrous environments in different regions. In addition, although the academic research field provides the pole protection mechanical device that circuit and pole separation under the overload, these devices structure is complicated, and the component is many, and the installation technical requirement is high, and difficult maintenance and change, with high costs, the practicality is poor, and the effective protection problem of pole still has not effectively been solved.
Disclosure of Invention
The invention aims to: the active safety protection device for the distribution network pole and the installation method are safe, reliable, simple in structure, simple to install, convenient to maintain and replace and low in cost, and the defects in the prior art are overcome.
The technical scheme of the invention is as follows: the utility model provides a join in marriage net pole initiative safety device, includes shear bolt, nut, goes up gland, fixer and staple bolt, sets up threaded hole at the top of fixer, and threaded connection has shear bolt on the screw hole, and the cover has last gland on shear bolt, and goes up the gland and can follow shear bolt axis direction and adjust, has the nut at shear bolt's upper end threaded connection, is provided with the staple bolt in the below of fixer, the both sides of staple bolt pass through connecting band and fixer fixed connection.
The protective device further comprises an insulating protective shell, and the shearing bolt, the nut, the upper gland, the fixer and the hoop are all arranged in the insulating protective shell.
The insulation protection shell comprises two U-shaped housings which are symmetrically arranged, semicircular clamping holes are symmetrically formed in the bottoms of the two U-shaped housings, and self-locking type strap bands are sleeved outside the two U-shaped housings.
Meanwhile, the invention also provides an installation method based on the active safety protection device for the distribution network pole, which comprises the steps of firstly sleeving the fixer on the insulator at the top of the pole, fixing the fixer with the insulator through the hoop, then connecting the shearing bolt in the threaded hole at the top of the fixer in a threaded manner, then fixing the end parts of the left line and the right line on the shearing bolt, sleeving the upper gland on the shearing bolt, screwing the nut at the upper end of the shearing bolt, pressing the upper gland through the nut to move downwards until the upper gland tightly presses the end parts of the left line and the right line, and finally sleeving the outer part of the whole device in the insulating protection shell.
In the method, the ends of the left line and the right line are fixed by the line hoop.
In the method, when the insulation protection shell is installed, the semicircular clamping holes at the bottoms of the two U-shaped housings are clamped on the insulator, and then the two U-shaped housings are fixed together through the self-locking type strap.
Due to the adoption of the technical scheme, the invention has the advantages that:
(1) the active safety protection device is provided with the weak link in the system, protects the electric pole in a mode of sacrificing the weak link when a disaster occurs, and improves the first-aid repair efficiency, so that the influence of natural disasters on the distribution network system is reduced to the minimum.
(2) The invention mainly comprises six components of a shearing bolt, a nut, an upper gland, a fixer, a hoop and an insulating protective shell, and the device has simple structure and low cost.
(3) The invention is fixed on the insulator through the hoop, and the power transmission line is wound and tied on the shearing bolt, so that the mounting step is simple, the operation is convenient and easy, and the mounting, maintenance and replacement of the device are facilitated.
(4) The main structure of the invention is sleeved in the insulating protective shell, and the fixer and the insulating protective shell are both connected and fixed with the insulator, thus having good insulating property and safe and reliable operation.
(5) The invention can adopt an interval installation mode, namely, one electric pole is installed at every interval, thereby reducing the installation quantity and the installation strength and greatly reducing the investment cost.
In conclusion, the technical scheme of the invention can effectively disconnect the line and unload when the power transmission line is acted by strong external force such as tree lodging, extreme weather and the like, thereby avoiding the inclination or the pole breakage of the electric pole. The invention has the advantages of safety, reliability, simple structure, simple installation, convenient maintenance and low cost, and is particularly suitable for the southwest mountain forest area of China.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the shear bolt of the present invention;
FIG. 3 is a sectional view showing a connecting structure of the anchor and the insulator according to the present invention;
FIG. 4 is a schematic view of a connection structure of a left line and a right line in the present invention;
FIG. 5 is a schematic view of the structure of the insulating protective sheath according to the present invention;
description of reference numerals: 1-shear bolt, 2-nut, 3-upper gland, 4-left line, 5-right line, 6-fixer, 7-hoop, 8-threaded hole, 9-insulator, 10-line hoop, 11-insulating protective shell and 12-self-locking type strap.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.
The embodiment of the invention comprises the following steps: join in marriage net electric pole initiative safety device's structural schematic diagram as shown in fig. 1 ~ 3, including shear bolt 1, nut 2, go up gland 3, fixer 6 and staple bolt 7, threaded hole 8 is seted up at the top of fixer 6, threaded connection has shear bolt 1 on threaded hole 8, the cover has last gland 3 on shear bolt 1, and go up gland 3 and can follow shear bolt 1 axis direction and adjust, there is nut 2 at shear bolt 1's upper end threaded connection, be provided with staple bolt 7 in the below of fixer 6, staple bolt 7's both sides pass through connecting band and fixer 6 fixed connection.
The protective device further comprises an insulating protective shell 11, and the shearing bolt 1, the nut 2, the upper gland 3, the fixer 6 and the hoop 7 are all arranged in the insulating protective shell 11. Referring to fig. 5, the insulating protection housing 11 includes two U-shaped housings symmetrically disposed, semicircular clamping holes are symmetrically formed in the bottoms of the two U-shaped housings, the two semicircular clamping holes can be just clamped at the minimum outer diameter of the insulator 9, and a self-locking strap 12 is sleeved outside the two U-shaped housings.
When the active safety protection device for the distribution network pole is installed, firstly, the fixing device 6 is sleeved on the insulator 9 at the top of the pole and is fixed with the insulator 9 through the hoop 7, then the shearing bolt 1 is in threaded connection with the threaded hole 8 at the top of the fixing device 6, and then the end parts of the left circuit 4 and the right circuit 5 are fixed on the shearing bolt 1; referring to fig. 4, the ends of the left and right wires 4 and 5 are fixed by a wire ferrule 10. At this moment, the upper gland 3 is sleeved on the shearing bolt 1, the nut 2 is screwed into the upper end of the shearing bolt 1, the upper gland 3 is pressed through the nut 2 to move downwards until the upper gland 3 tightly presses the end parts of the left circuit 4 and the right circuit 5, and finally the whole device is sleeved in the insulating protection shell 11. In the device, the left line 4, the right line 5 and the insulator 9 are of a self-contained structure of the distribution network line.
When the insulation protection shell 11 is installed, the semicircular clamping holes at the bottoms of the two U-shaped housings are clamped on the insulator 9, and then the two U-shaped housings are fixed together through the self-locking type strap 12.
The working mechanism of the invention is as follows: under normal conditions, the acting force of the left line 4 and the right line 5 on the shear bolt 1 is smaller than the shear strength of the left line and the right line; when the power transmission line is subjected to strong external force such as tree lodging and extreme weather, the external force acts on the shearing bolt 1 through the left line 4 and the right line 5, if the force reaches the shearing strength threshold value of the shearing bolt 1, the shearing bolt 1 is sheared, fracture damage occurs, the left line 4 and the right line 5 connected to the shearing bolt 1 are separated immediately, the strong external force can be released, and the electric pole inclination or pole breakage accident is avoided.
The invention can be suitable for lines with different specifications (diameters) and can meet the requirements of electric poles with different models. Meanwhile, the damage threshold value of the shear bolt 1 can be changed by producing the shear bolt 1 with different specifications according to the maximum bearable external force of different lines, so that the damage limit of different electric poles is adapted, and the purpose of protecting the electric poles is achieved. When the shear bolt 1 is damaged and the line is required to be installed again after being separated from the device, the shear bolt 1 is only required to be replaced and fixed on the fixer 6, and then the line is wound and compacted to complete repair, so that the repair process is simple and efficient.
Claims (6)
1. The utility model provides a join in marriage net pole initiative safety device, includes shear bolt (1), nut (2), goes up gland (3), fixer (6) and staple bolt (7), its characterized in that: threaded hole (8) are seted up at the top of fixer (6), threaded connection has shear bolt (1) on threaded hole (8), the cover has last gland (3) on shear bolt (1), and goes up gland (3) and can follow shear bolt (1) axis direction and adjust, has nut (2) at the upper end threaded connection of shear bolt (1), is provided with staple bolt (7) in the below of fixer (6), the both sides of staple bolt (7) pass through connecting band and fixer (6) fixed connection.
2. The active safety device of the distribution network pole of claim 1, characterized in that: still include insulating protective housing (11), shear bolt (1), nut (2), go up gland (3), fixer (6) and staple bolt (7) all set up in insulating protective housing (11).
3. The active safety device of the distribution network pole of claim 2, characterized in that: the insulation protection shell (11) comprises two U-shaped housing shells which are symmetrically arranged, semicircular clamping holes are symmetrically formed in the bottoms of the two U-shaped housing shells, and self-locking type strap bands (12) are sleeved outside the two U-shaped housing shells.
4. An installation method of the active safety protection device of the distribution network pole based on any one of claims 1 to 3 is characterized in that: firstly, fix anchor (6) on insulator (9) at pole top, it is fixed with insulator (9) through staple bolt (7) simultaneously, then with shear bolt (1) threaded connection in screw hole (8) at anchor (6) top, all fix the tip of left part circuit (4) and right part circuit (5) on shear bolt (1), cover gland (3) on shear bolt (1) this moment, and twist nut (2) in the upper end of shear bolt (1), press gland (3) to move down through nut (2), until gland (3) compress tightly the tip of left part circuit (4) and right part circuit (5), it can in insulating protective housing (11) to suit at the outside of whole device at last.
5. The installation method of the active safety device for the distribution network pole as recited in claim 4, characterized in that: the ends of the left line (4) and the right line (5) are fixed through a line hoop (10).
6. The installation method of the active safety device for the distribution network pole as recited in claim 4, characterized in that: when the insulation protection shell (11) is installed, semicircular clamping holes at the bottoms of the two U-shaped housings are clamped on the insulator (9), and then the two U-shaped housings are fixed together through the self-locking type strap (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011509636.0A CN112600147A (en) | 2020-12-19 | 2020-12-19 | Active safety protection device for distribution network pole and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011509636.0A CN112600147A (en) | 2020-12-19 | 2020-12-19 | Active safety protection device for distribution network pole and installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112600147A true CN112600147A (en) | 2021-04-02 |
Family
ID=75199820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011509636.0A Pending CN112600147A (en) | 2020-12-19 | 2020-12-19 | Active safety protection device for distribution network pole and installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112600147A (en) |
-
2020
- 2020-12-19 CN CN202011509636.0A patent/CN112600147A/en active Pending
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