CN206274606U - A kind of arrester external leakage for being easy to charged for replacement shields anchor ear device - Google Patents

Abstract

The utility model discloses a lightning arrester external leakage shielding hoop device which is convenient for live replacement, belongs to the technical field of electric equipment, and comprises a strip-shaped hoop. Both ends of the hoop are provided with through holes, and one end of the hoop is arranged side by side. A plurality of first open slots, first teeth are arranged between adjacent first open slots, a plurality of second open slots are arranged side by side at the other end of the hoop, second teeth are arranged between adjacent second open slots, and second teeth are arranged between adjacent second open slots. The groove depth direction of the first open groove and the groove depth direction of the second open groove are both perpendicular to the length direction of the hoop, and the opening orientation of the first open groove is opposite to that of the second open groove, and the groove depth of the first open groove is Both the groove depth and the second opening groove are half of the width of the hoop. The hoop device provided by the utility model is easy to install, and there is no need to use fasteners to fix the hoop. Electric maintenance personnel can operate the hoop through other tools, which effectively improves the safety of operation without using power-off operations. sex.

Description

A shielding hoop device for external leakage of lightning arrester that is convenient for live replacement

technical field

The utility model relates to the technical field of electric power equipment, in particular to a lightning arrester external leakage shielding hoop device which is convenient for live replacement.

Background technique

At present, lightning arresters with external leakage shielding counters are generally fixed and installed on the outside of the porcelain sleeve with hoops. Since the hoops have been in the outdoor environment for many years, after being exposed to wind, sun, rain, fog and snow, the speed of aging and corrosion is obviously accelerated. It is easy to cause the hoop to break and fall off, and the function of the hoop to shield the leakage current fades or is lost. The relevant departments of the electric power need to replace and eliminate the defect in time.

When there is no overvoltage, the leakage current value of the arrester is very small, generally not more than 1mA. As the arrester works for a long time, coupled with the influence of external temperature, pollution, humidity and other factors, the performance of the valve inside the arrester will decrease, and the leakage current value of the arrester will increase. If the hoop is replaced with electricity, there will be a major safety hazard in consideration of the leakage current of the arrester and the short safety distance from the live parts on the upper end of the arrester. If there is a power outage to replace the hoop, especially for the three-side surge arrester of the 220kV main transformer, it is necessary to stop a main transformer. In this way, the power outage range is large, the switching operation is cumbersome, and it takes a long time for power outage work, which seriously affects the The normal operation of the power grid system will bring certain economic losses and inconvenience to the society, enterprises and residents.

Utility model content

In order to solve the above-mentioned shortcomings and deficiencies in the prior art, the utility model provides a simple in structure, easy to carry, and easy to replace the lightning arrester external leakage shielding hoop device.

In order to achieve the above technical purpose, the utility model provides an arrester external leakage shielding hoop device that is convenient for live replacement. There are several first open slots, first teeth are arranged between the adjacent first open slots, a number of second open slots are arranged side by side at the other end of the hoop, second teeth are arranged between adjacent second open slots, the second The groove depth direction of the first open groove and the groove depth direction of the second open groove are both perpendicular to the length direction of the hoop, and the opening orientation of the first open groove is opposite to that of the second open groove, and the groove depth of the first open groove is The groove depth of the groove and the second opening groove are half of the width of the hoop.

Preferably, the side of the first teeth facing the center of the hoop is provided with a first positioning tooth protruding toward the center of the hoop, and the side of the second teeth facing the center of the hoop is provided with a positioning tooth protruding toward the center of the hoop. For the second positioning tooth, one end of the hoop is provided with a first positioning opening for insertion of the second positioning tooth when fixed, and the other end is provided with a second positioning opening for insertion of the first positioning tooth.

Preferably, the first positioning tooth and the second positioning tooth are in the shape of an arrow protruding toward the center of the hoop, the first positioning opening and the second positioning opening are both formed by stamping, and the length direction of the first positioning opening is the same as that of the second positioning opening. The length direction of the positioning opening is perpendicular to the length direction of the hoop, and the length of the first positioning opening and the length of the second positioning opening are both less than half of the width of the hoop.

Preferably, the hoop is made of stainless steel, and the outer surface of the hoop is provided with an anti-corrosion coating.

Preferably, both ends of the hoop are provided with strip-shaped limiting strips at the sides along the length direction, and the length direction of the limiting strips is perpendicular to the length direction of the hoop.

Preferably, the limit bar is provided with an arc-shaped bent portion on a side away from the hoop, and a concave pull groove is provided on one side of the bent portion.

Preferably, the arrester external leakage shielding hoop device that is convenient for live replacement also includes an operating rod for fixing the hoop and insulating it. One end of the operating rod is rotated to be provided with a first base block and a second base block. The first base block A hook is arranged on the top, a pressing rod is arranged on the second base block, and a pressure block is fixed on the end of the pressing rod far away from the second base block.

Preferably, one end of the operating rod is provided with a clamping groove, and the end of the operating rod provided with the clamping groove is fixed with a fixed shaft axially perpendicular to the length direction of the operating rod, and the first base block and the second base block can The rotating sleeve is mounted on the fixed shaft.

Preferably, the operating rod includes several rod segments, and a telescopic structure for connection is provided between adjacent rod segments.

Preferably, the operating rod is made of epoxy resin.

After adopting the above technical scheme, the arrester external leakage hoop device provided by the utility model, which is convenient for electrified replacement, has the following advantages:

1. The arrester external leakage shielding hoop device provided by the utility model, which is convenient for live replacement, improves the existing hoop used to fix the arrester. Both ends of the hoop are provided with through holes, and one end of the hoop is provided with a first opening slot. , The other end defines a second open slot, and the opening direction of the first open slot is opposite to that of the second open slot. When fixing the arrester, make the hoop bend and cross the two ends, then snap the first tooth into the second open slot, and make the second tooth snap into the first open slot. It is easy to install and does not need to use fasteners Realize the fixation of the hoop, and the power maintenance personnel can operate the hoop through other tools, which effectively improves the safety of the operation without using power failure operation, and satisfies the operation requirements well.

2. A first positioning tooth is provided on the side of the first teeth, a second positioning tooth is provided on the side of the second teeth, and a first positioning opening and a second positioning opening for inserting the positioning teeth are respectively provided at both ends of the hoop. When using hoops to fix the arrester, inserting the first positioning tooth into the second positioning opening and the second positioning tooth into the first positioning opening can effectively improve the installation stability of the hoop, thereby improving the fixing stability of the arrester.

3. The outer surface of the hoop is provided with an anti-corrosion coating, which can effectively improve the anti-corrosion performance of the hoop, thereby prolonging the service life of the hoop.

4. Set limit bars at both ends of the hoop. After the hoop is installed, bend the limit bar to cover the end of the hoop to prevent the hoop from falling off due to the movement of the end, improve the stability of the hoop, and further improve the The stability of the arrester.

5. An arc-shaped bend is set on the limit bar, and a concave pull groove is set on one side of the bend, so that it is convenient to find the point of force when borrowing a tool to fix the hoop, and the limit bar is bent to hold the end of the hoop through the tool Department, effectively improve operability.

6. The hoop device also includes an operating rod. One end of the operating rod is provided with two base blocks. A hook is fixed on one base block, and a pressing block is fixed on the other base block. The operating rod passes through the hook and through holes at both ends of the hoop. The cooperation can hook the hoop to make it bend and fix. The operating rod can hook the limit bar through the hook to make it bend and buckle the end of the hoop. The operating rod can also bend the limit bar further through the pressure block. Tighten the end of the hoop to improve the ease of securing the hoop with the lever.

7. One end of the operating rod is provided with a clamping groove and a fixed shaft. The two base blocks are rotatably fitted on the fixed shaft through tight fit. Electric maintenance personnel can rotate the base block according to the operating conditions and use hooks or pressing blocks to make the operating rod convenient. use.

8. Several rod sections constituting the operating rod are connected through a telescopic structure, and the length of the operating rod is adjustable, so that the electric maintenance personnel can adjust the length of the operating rod according to the specific operating environment during operation, and improve the versatility of the operating rod.

Description of drawings

Fig. 1 is the schematic diagram of the hoop in the outer leakage shielding hoop device of the lightning arrester that is convenient for live replacement according to the utility model embodiment;

Fig. 2 is a sectional view along A-A direction in Fig. 1;

Fig. 3 is a sectional view along B-B direction in Fig. 1;

Fig. 4 is a schematic diagram of an operating rod in an arrester external leakage shielding hoop device that is convenient for live replacement according to an embodiment of the present utility model;

Fig. 5 is the enlarged view of C place in Fig. 4;

FIG. 6 is a top view of FIG. 5 .

In the figure, 1-clamp, 11-the first open slot, 12-the first teeth, 13-the first positioning teeth, 14-the first positioning opening, 15-the second opening slot, 16-the second teeth, 17-Second positioning tooth, 18-Second positioning port, 19-Through hole, 2-Limiting bar, 21-Bend, 22-Slot, 3-Operation rod, 31-Clamp groove, 32-Fixed shaft, 33-hanging ring, 4-the first base block, 41-crotch hook, 5-the second base block, 51-depressing bar, 52-pressing block.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described. It should be understood that the following "up", "down", "left", "right", "vertical", "horizontal", "inner", "outer", "vertical", "horizontal", " Words indicating orientation or positional relationship, such as "top", "bottom", are only based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device/element must have A particular orientation or construction and operation in a particular orientation should therefore not be construed as limiting the invention.

Embodiment one

As shown in Figures 1 to 6, the embodiment 1 of the utility model provides an arrester external leakage shielding hoop device for live replacement, which includes a strip-shaped hoop 1 and a rod-shaped operating rod 2 .

As shown in Figure 1, the left end of the hoop 1 is provided with a number of first opening slots 11 in parallel, and the first teeth 12 are arranged between the adjacent first opening slots, and the first teeth are provided on the side facing the center of the hoop. The first positioning tooth 13 protrudes toward the center of the hoop, and a plurality of first positioning openings 14 are arranged side by side at the left end of the hoop. The right end of the hoop 1 is juxtaposed with several second opening slots 15, and a second teeth 16 are arranged between adjacent second opening slots. The second positioning tooth 17, the right end of the hoop is also provided with a number of second positioning openings 18 side by side.

The groove depth direction of the first opening groove 11 and the groove depth direction of the second opening groove 15 are both perpendicular to the length direction of the hoop 1, and the opening direction of the first opening groove 11 is opposite to that of the second opening groove 15. The groove depth of the first open groove and the groove depth of the second open groove are both half of the width of the hoop 1 .

The first positioning tooth 13 and the second positioning tooth 17 are all in the shape of an arrow protruding toward the center of the hoop. The height of the first positioning tooth 13 along the depth direction of the first opening groove 11 is less than half of the width of the hoop. The height of 17 along the groove depth direction of the second opening groove 15 is also less than half of the width of the hoop.

As shown in Figure 2, the first positioning opening 14 and the second positioning opening 18 are strip-shaped and formed by stamping, the length direction of the first positioning opening and the length direction of the second positioning opening are perpendicular to the length direction of the hoop , and the length of the first positioning opening and the length of the second positioning opening are both less than half of the width of the hoop and slightly greater than the height of the first and second positioning teeth along the groove depth direction.

The left and right ends of the hoop 1 are provided with through holes 19, and the through holes can be any one of square holes, round holes, oval holes and waist holes.

As shown in FIG. 3 , both ends of the hoop 1 are provided with strip-shaped limiting strips 2 on the sides along the length direction, and the length direction of the limiting strips is perpendicular to the length direction of the hoop. The limiting bar 2 is provided with an arc-shaped bent portion 21 on a side away from the hoop, and a concave-shaped draw groove 22 is provided on one side of the bent portion. It is convenient to find the point of force when borrowing a tool to fix the hoop, and the limit bar is bent to catch the end of the hoop through the tool, which effectively improves the operability.

In this embodiment, the hoop is made of stainless steel, and the outer surface of the hoop is provided with an anti-corrosion coating. The anti-corrosion performance of the hoop can be effectively improved, thereby prolonging the service life of the hoop.

As shown in Figure 4, Figure 5 and Figure 6, one end of the operating rod 3 is provided with a clamping groove 31, and the end of the operating rod having the clamping groove is fixed with a fixed shaft 32 whose axial direction is perpendicular to the length direction of the operating rod. The other end is provided with a hanging ring 33 .

The fixed shaft 32 is equipped with a rotatable first base block 4 and a second base block 5 by tight fitting, the first base block 4 is provided with a crotch 41, the second base block 5 is provided with a pressing bar 51, and the pressing bar A pressure block 52 is fixed at the end remote from the second base block.

The two base blocks are sleeved on the fixed shaft 32 through tight fitting rotation, and electric maintenance personnel can rotate the base blocks to use crotch 41 or pressing block 52 according to the operation situation, so that the operating lever is easy to use. The operating rod can hook the hoop through the cooperation of the hook and the through holes at both ends of the hoop to make it bend and fix. The operating rod can hook the limit bar through the hook to make it bend and buckle the end of the hoop. The operating rod It is also possible to further bend the limit bar to tighten the end of the hoop through the pressing block, so as to improve the convenience of fixing the hoop by using the operating rod.

In this embodiment, the operating rod 3 is insulated, and further, the operating rod is made of epoxy resin. The operating rod includes several rod segments, and a telescopic structure for connection is arranged between adjacent rod segments. The length of the operating rod is adjustable, so that electric maintenance personnel can adjust the length of the operating rod according to the specific operating environment during operation, and improve the versatility of the operating rod.

When operating, select the corresponding type of hoop according to the type of arrester and the thickness of the utility pole, adjust the length of the operating rod 3 according to the specific operating environment, and turn the second base block 5 so that the pressing rod 51 and the pressing block 52 are located in the clamping groove 31, adjust the bending angle of the hook 41 relative to the operating rod 3. The maintenance personnel hold an operating rod 3 in both hands, and make the hooks 41 on the two operating rods respectively hook the two ends of the hoop 1 through the cooperation with the through hole 19, and bend the hoop 1 through the action of the operating rod 3, The first teeth 12 snap into the second opening groove 15, and the second teeth 16 snap into the first opening groove 11. At the same time, the first positioning teeth 13 are inserted into the second positioning opening 18, and the second positioning teeth 17 are inserted into the second positioning opening. In a positioning opening 14.

Make the hook 41 out of the through hole 19, use the hook to hook the limit bar 2 through the cooperation with the pull groove 22, pull the operating lever 3, and bend the limit bar 2 to buckle the end of the hoop 1 through the hook 41 , Improve the installation stability of the hoop.

If the limit bar 2 is to be further fastened to the end of the hoop 3, the first base block 4 is rotated so that the crotch 41 is located in the clamping groove 31, and the second base block 5 is rotated so that the pressure block 52 is separated from the clamping groove, and the pressure block 52 is separated from the clamping groove. The effect of the block makes the limit bar 2 further bend and fasten the end of the hoop 1.

Embodiment 1 of the utility model provides an arrester external leakage shielding hoop device that is convenient for live replacement, which improves the existing hoop used to fix the arrester, is easy to install, and can be fixed without using fasteners. Maintenance personnel can operate the hoop through the insulated operating rod, which effectively improves the safety of operation without using power failure operation, and satisfies the operation requirements well.

In addition to the above-mentioned preferred embodiment, the utility model also has other embodiments, and those skilled in the art can make various changes and deformations according to the utility model, as long as they do not depart from the spirit of the utility model, all should belong to the claims of the utility model The range defined in .

Claims (10)

1. A lightning arrester external leakage shielding hoop device for live replacement, comprising a strip-shaped hoop, characterized in that, both ends of the hoop are provided with through holes, and one end of the hoop is arranged side by side with several first Open slots, first teeth are provided between adjacent first open slots, a number of second open slots are arranged side by side at the other end of the hoop, second teeth are provided between adjacent second open slots, first open slots The groove depth direction of the second open groove and the groove depth direction of the second open groove are both perpendicular to the length direction of the hoop, and the opening orientation of the first open groove is opposite to that of the second open groove, and the groove depth of the first open groove is the same as that of the second open groove. The groove depth of the open groove is half of the width of the hoop. 2. The arrester external leakage shielding hoop device that is convenient for live replacement according to claim 1, characterized in that, the side of the first teeth facing the center of the hoop is provided with a first positioning protruding toward the center of the hoop Teeth, the side of the second teeth facing the center of the hoop is provided with a second positioning tooth protruding towards the center of the hoop, one end of the hoop is provided with a first positioning opening for the insertion of the second positioning tooth when fixed, and the other end is provided There is a second positioning opening for the insertion of the first positioning teeth. 3. The arrester external leakage shielding hoop device that is convenient for live replacement according to claim 2, wherein the first positioning tooth and the second positioning tooth are both in the shape of an arrow protruding toward the center of the hoop, and the first Both the positioning opening and the second positioning opening are formed by punching, the length direction of the first positioning opening and the length direction of the second positioning opening are perpendicular to the length direction of the hoop, and the length of the first positioning opening is the same as the length of the second positioning opening are less than half the width of the hoop. 4. The arrester external leakage shielding hoop device that is convenient for live replacement according to claim 1, wherein the hoop is made of stainless steel, and the outer surface of the hoop is provided with an anti-corrosion coating. 5. The arrester external leakage shielding hoop device that is convenient for live replacement according to claim 1, characterized in that, both ends of the hoop along the lengthwise sides are provided with strip-shaped limiting strips, and the limiting strips The length direction of the hoop is perpendicular to the length direction of the hoop. 6. The arrester external leakage shielding hoop device that is convenient for live replacement according to claim 5, characterized in that, the limit bar is provided with an arc-shaped bend on the side away from the hoop, and one side of the bend is Concave grooves are provided. 7. According to any one of claims 1-6, the lightning arrester external leakage shielding clamp device that is convenient for live replacement is characterized in that, the lightning arrester external leakage shielding clamp device that is convenient for live replacement also includes a clamp for fixing the clamp And the insulated operating rod, one end of the operating rod is rotated to be provided with a first base block and a second base block, the first base block is provided with a hook, the second base block is provided with a pressing rod, and the pressing rod The end of the block is fixed with a pressing block. 8. The arrester external leakage shielding hoop device convenient for live replacement according to claim 7, characterized in that, one end of the operating rod is provided with a clamping groove, and the end of the operating rod provided with the clamping groove is fixed with an axial vertical On the fixed shaft in the length direction of the operating rod, the first base block and the second base block are rotatably sleeved on the fixed shaft through tight fit. 9. The external leakage shielding hoop device for surge arresters that is convenient for live replacement according to claim 8, wherein the operating rod includes several rod segments, and a telescopic structure for connection is provided between adjacent rod segments. 10. The external leakage shielding hoop device of the surge arrester that is convenient for live replacement according to claim 9, wherein the operating rod is made of epoxy resin.