CN217563275U - High tension transmission line shielding failure prevention device - Google Patents

Abstract

The application provides a high tension transmission line prevents around hitting device, and the device includes: the first wire clamp and the second wire clamp of centre gripping high tension transmission line, fixed wire frame that first wire clamp and second wire clamp press from both sides, with wire frame external connection's arrester, with the ground lead that the arrester is connected, with the lightning conductor couple that ground lead is connected. Through the connection of wire clamp, wire frame and arrester, solved conventional arrester and installed in shaft tower department and cause the problem that protective range is little, through the structure that sets up ground lead and lightning conductor couple, realized that the connection distance of wire and lightning conductor is controllable. The device has better economical efficiency and effect, and has better inhibiting effect on the phenomenon of high shielding failure tripping rate existing in the high-voltage transmission line. Meanwhile, the installation is simple, the distance can be flexibly adjusted according to the splitting widths of different lines, and the lines are not damaged while the lines are firmly connected with the conducting wires and the lightning conductors.

Description

High tension transmission line shielding failure prevention device

Technical Field

The application relates to the field of high-voltage power transmission, in particular to a shielding failure prevention device for a high-voltage power transmission line.

Background

High-voltage transmission lines are important components in power systems, and the normal operation of the high-voltage transmission lines is crucial to the long-distance transmission of electric energy. According to the regulations in China, the lightning conductor is erected on the whole high-voltage transmission line, the shielding effect of the lightning conductor can protect the conductor from direct lightning strike, and particularly, the lightning conductor has a good protection effect on large-amplitude lightning current. According to an electrical geometric model, the striking distances of a conducting wire and a lightning conductor are the same, the lightning conductor is usually erected above the conducting wire, and the erection lightning stroke develops vertically downwards, so that when the lightning stroke occurs, the lightning conductor can attract lightning firstly, the lightning conductor can quickly cast the lightning conductor to two sides, the lightning current flows into the ground at a tower, the larger the lightning current amplitude is, the wider the protection range of the lightning conductor is, when the lightning current amplitude is larger than a certain value, the conducting wire is completely protected by the lightning conductor, no anti-accident can occur, but the prevention effect on small-amplitude lightning current is poor, so that few counterattack faults occur in the lightning faults of a high-voltage transmission line, and most of the lightning faults are the tripping faults of the transmission line, namely, the lightning current bypasses the lightning conductor to directly attack the lightning conductor, and causes the line tripping faults.

At present, lightning protection measures for the power transmission line include a lightning arrester, an improved insulation, a lightning arrester and the like besides the lightning conductor, so that more shielding failure prevention means are provided for the high-voltage power transmission line, for example, the number of the lightning conductors is increased, and the attraction to lightning stroke is enhanced by adopting double lightning conductors, so that the conductor is protected from being subjected to direct lightning stroke; by installing the lightning arrester on each phase line, overvoltage on two sides of the insulator is inhibited during lightning stroke, and a transmission channel leading to the ground is provided for lightning current, so that flashover and tripping of the lines are avoided; the lightning resistance level of the line can be enhanced by improving the insulation, so that the line is more difficult to generate flashover tripping under the condition of lightning current invasion with the same amplitude; the lightning receptor is similar to a lightning conductor in principle and is usually fixed on a tower, and the transmission conductor is protected from direct lightning attack by actively attracting lightning. The measures have certain limitations, for example, the installation of the lightning conductor is limited by the tower shape and the size of the protection angle, and when a plurality of lightning conductors cannot be installed on the line tower or the protection angle of the line tower cannot meet the requirements, the protection effect is greatly reduced; the lightning arrester and the improved insulation basically belong to the similar lightning protection reconstruction measures, and the main defect is that the cost is high, and the lightning arrester and the improved insulation cannot be comprehensively applied to high-voltage transmission lines which extend for thousands of miles; the lightning receptor is limited in protection range, shielding failure mostly occurs in the center of the line span, and the lightning receptor fixed on the tower has very limited protection range, so that the shielding failure of the line cannot be effectively prevented.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high tension transmission line prevents shielding failure device to it is limited to prevent shielding failure's protection scope, the poor problem of effect to high tension transmission line among the solution prior art.

The scheme adopted in the application is as follows:

the device comprises:

the first wire clamp and the second wire clamp are used for clamping the high-voltage transmission line;

the device also comprises a lead frame for fixing the first lead clamp and the second lead clamp, wherein the first lead clamp and the second lead clamp are arranged on two sides in the lead frame;

the device also comprises a lightning receptor positioned at one side outside the lead frame, wherein the lightning receptor comprises a lightning receptor base connected with the lead frame;

the device also comprises a grounding lead with one end connected with the lightning receiving base;

the device also comprises a lightning conductor hook connected with the other end of the grounding lead.

Preferably, the lead frame includes:

the first connecting arm, the second connecting arm, the third connecting arm and the fourth connecting arm;

the first connecting arm, the second connecting arm, the third connecting arm and the fourth connecting arm are connected end to form a rectangular structure;

the first connecting arm and the second connecting arm are connected in a sliding mode in the horizontal direction, the third connecting arm and the fourth connecting arm are connected in a sliding mode in the horizontal direction, the first connecting arm is connected with the fourth connecting arm in a bolted mode, and the second connecting arm is connected with the third connecting arm in a bolted mode.

Preferably, the first wire holder includes:

the device comprises a first assembly, a second assembly, a fixing bolt and a connecting rod;

the first assembly and the second assembly are of semicircular ring structures, and the first assembly and the second assembly are connected through bolts end to form a circular ring structure;

the number of the fixing bolts is at least 3, the fixing bolts are uniformly distributed on a circular ring structure formed by the first assembly and the second assembly, and the fixing bolts penetrate through the circular ring structure along the direction towards the circle center of the circular ring structure;

the connecting rod is connected with the first wire clamp and the wire frame.

Preferably, the lightning receptor further comprises:

the lightning arrester comprises a fixed sleeve and a lightning rod;

the fixed sleeve is of a hollow columnar structure, one end of the fixed sleeve is connected with the lightning receiving base, and the other end of the fixed sleeve is a preset length in the direction away from the lightning receiving base;

the lightning rod is of a needle-shaped structure, one end of the lightning rod is connected with the bottom of the hollow fixed sleeve, and the other end of the lightning rod extends along the direction of the far away fixed sleeve.

Preferably, the lightning conductor hook comprises a first hook arm, a second hook arm and a hook base;

the first hook arm and the second hook arm are of semi-circular ring structures, and the first hook arm and the second hook arm are connected in a sliding mode to form a circular ring structure with an opening;

one end of the base is connected with the annular structure with the opening, and the other end of the base is connected with the grounding lead.

Preferably, one end of the fixing bolt, which faces the center of the first wire clamp, is provided with a rubber gasket.

Preferably, a fixing head is arranged at one end, far away from the hook base, of the first hook arm;

one end of the second hook arm, which is far away from the hook base, is provided with a fixing port corresponding to the fixing head;

the fixing head and the fixing port are provided with bolt holes, and when the fixing head is embedded into the fixing port in a sliding mode, the fixing head and the fixing port are fixed through the bolt holes.

Preferably, the first connecting arm and the second connecting arm are provided with embedded slideways, and the first connecting arm and the second connecting arm penetrate through the slideways through bolts to be connected.

Preferably, the third connecting arm and the fourth connecting arm are provided with embedded slideways, and the third connecting arm and the fourth connecting arm penetrate through the slideways through bolts to be connected.

Preferably, the first hook arm and the second hook arm are provided with embedded slideways and are connected through the slideways by bolts.

The application provides a high tension transmission line prevents around hitting device includes: the first wire clamp and the second wire clamp of centre gripping high tension power line, it is fixed the wire frame that first wire clamp and second wire pressed from both sides, with wire frame external connection's arrester, with the ground lead that the arrester is connected, with ground lead's lightning conductor couple. Through the connection of wire clamp, wire frame and arrester, solved conventional arrester and installed in shaft tower department and cause the problem that protective range is little, through the structure that sets up ground lead and lightning conductor couple, realized that the connection distance of wire and lightning conductor is controllable, further promote the effect of preventing shielding failure to when wire, lightning conductor form firm the connection, do not lead to the fact the damage to circuit itself.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic front view of a structure of an anti-shielding failure device for a high-voltage transmission line according to an embodiment of the present application;

fig. 2 is a schematic front view of a structure in which a first wire of an anti-shielding device for a high-voltage transmission line according to an embodiment of the present invention is clamped;

fig. 3 is a schematic front view of a lightning conductor hook in an embodiment of an anti-shielding device for a high-voltage transmission line according to the present application;

fig. 4 is a schematic bottom view of a second connecting arm of an anti-shielding failure device for a high-voltage transmission line according to an embodiment of the present application;

fig. 5 is a schematic side view of a second hook arm in the high-voltage transmission line anti-shielding failure device according to an embodiment of the invention.

In the figure: 1-a first wire clamp; 11-a first component; 12-a second component; 13-fixing the bolt; 14-a connecting rod; 2-a second wire clamp; 3-a lead frame; 31-a first connecting arm; 32 a second connecting arm; 33-a third connecting arm; 34-a fourth connecting arm; 4-a lightning receptor; 41-lightning-receptor base; 42-a fixed sleeve; 43-lightning rod; 5-hanging a lightning conductor; 51 a first hanger arm; 511-a fixed head; 52-a second hanger arm; 521-a fixed port; 53-a base; 6-ground lead.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

When a small-amplitude lightning current occurs near a high-voltage transmission line, a shielding failure is very likely to occur due to the fact that a protection angle and a protection surface of a lightning conductor are limited, other lightning protection measures such as installing a lightning arrester and improving insulation are high in modification price and installation difficulty, a conventional lightning arrester is installed at a tower, the protection range of the conventional lightning arrester is limited, and therefore the following implementation mode is provided based on how to improve the dust treatment effect.

As can be seen from fig. 1, the present application provides a device for preventing shielding failure of a high voltage transmission line, the device comprising:

a first wire clamp 1 and a second wire clamp 2 for clamping a high-voltage transmission line;

the device also comprises a lead frame 3 for fixing the first lead clamp 1 and the second lead clamp 2, wherein the first lead clamp 1 and the second lead clamp 2 are arranged on two sides inside the lead frame 3;

specifically, in this embodiment, the first wire clamp 1 and the second wire clamp 2 are used to fix a high-voltage transmission line, the wire frame 3 is used to fix the first wire clamp 1 and the second wire clamp 2, and the first wire clamp 1, the second wire clamp 2 and the wire frame 3 are designed to flexibly adjust the spacing according to the splitting widths of different lines, it should be noted that the first wire clamp 1 and the second wire clamp 2 in this scheme can obviously see that the number of the wire clamps is only two, but can be changed according to different requirements, for example, if three or more lines need to be fixed, at least three wire clamps need to be designed to meet actual requirements; the positions of the first wire holder 1 and the second wire holder 2 in the wire frame 3 are determined according to actual requirements, and the thickness, material and other factors of the first wire holder 1 and the second wire holder 2 are also determined according to actual requirements, and are not limited herein.

The device also comprises a lightning receptor 4 positioned on one side of the outer part of the lead frame 3, wherein the lightning receptor 4 comprises a lightning receptor base 41 connected with the lead frame 3;

the lightning receptor refers to a lightning rod, a lightning strip (wire), a lightning net, a metal roof and a metal member which are used for directly receiving lightning stroke, and the like. It has excellent electric connection with down lead and earthing device. The lightning protection device has the function that when lightning directly hits the lightning protection device, the lightning current is rapidly discharged to the ground from the lightning protection device through the down conductor and the grounding device, so that the building and electrical equipment in the building are protected.

Specifically, in this embodiment, the lightning receptor 4 is arranged on one side of the lead frame 3, and the high-voltage transmission line is clamped by the first lead clamp 1 and the second lead clamp 2, so that the arrangement positions of the lightning receptor 4 are diversified, the problem that the traditional lightning receptor 4 can only be arranged on a tower is avoided, and the effect of improving the shielding failure prevention range can be achieved by arranging the lightning receptor 4 at different positions; and not only set up single arrester 4 in this scheme, when setting up arrester 4, still external lightning conductor for the overall device is prevented shielding failure effect more excellent through such further design.

The device also comprises a grounding lead 6 with one end connected with the lightning receiving base 41;

the device also comprises a lightning conductor hook 5 connected with the other end of the grounding lead 6.

Specifically, in this embodiment, the ground lead 6 is used for connecting the lightning conductor hook 5, and the lightning conductor hook 5 is used for connecting a lightning conductor outside the device, wherein the ground lead 6 is freely retractable to meet the difference in distance between the lightning conductor and the high-voltage transmission line, and can also ensure the safe distance between the lightning conductor and the high-voltage transmission line, thereby avoiding damage to the line body when the device works; it should be noted that, in this scheme, the lightning conductor hook 5 is designed in a hook shape, but the lightning conductor hook 5 only needs to satisfy the requirement of connecting and fixing the lightning conductor, that is, it is not only designed in a hook shape, but also can satisfy the requirement of connecting and fixing the lightning conductor.

Further, the lead frame 3 includes:

a first connecting arm 31, a second connecting arm 32, a third connecting arm 33, and a fourth connecting arm 34;

the first connecting arm 31, the second connecting arm 32, the third connecting arm 33 and the fourth connecting arm 34 are connected end to form a rectangular structure;

specifically, in this scheme, to lead frame 3 carries out further design, will lead frame 3 designs into four widgets, if lead frame 3 designs as a whole, when it has the damage, just must replace whole lead frame 3, and designs into the structure that a plurality of widgets are constituteed, can make, when certain part is in the same direction as bad, only need to replace in the same direction as bad part can, promoted lead frame 3's life, reduced the cost.

First linking arm 31 with second linking arm 32 is along horizontal direction sliding connection, third linking arm 33 with fourth linking arm 34 is along horizontal direction sliding connection, first linking arm 31 with fourth linking arm 34 bolted connection, second linking arm 32 with third linking arm 33 bolted connection.

Specifically, in this embodiment, the first connecting arm 31 and the second connecting arm 32 are designed to be slidably connected in the horizontal direction, and the third connecting arm 33 and the fourth connecting arm 34 are designed to be slidably connected in the horizontal direction, so that the lead frame 3 can be freely stretched in the horizontal direction, so as to meet the requirement of different distances between the high-voltage power transmission lines.

Fig. 2 is a schematic front view of a structure in which a first wire of an anti-shielding device for a high-voltage transmission line according to an embodiment of the present invention is clamped, and it can be seen that the solution described in the present invention has the following design;

further, the first wire holder 1 includes:

a first assembly 11, a second assembly 12, a fixing bolt 13 and a connecting rod 14;

the first component 11 and the second component 12 are semi-circular structures, and the first component 11 and the second component 12 are connected by bolts end to form a circular structure;

specifically, in this scheme, the first wire clamp 1 is further designed, the first wire clamp 1 is designed into two small component first components 11 and a second component 12, so that the first wire clamp 1 can be conveniently arranged on a high-voltage transmission line, if the first wire clamp 1 is designed into a whole, when an installation device is installed, the first wire clamp 1 needs to be welded to be fixed on the high-voltage transmission line, and the structure of the design cost scheme is adopted, and when the installation device is arranged, the installation can be completed only by screwing down a bolt on the first wire clamp 1.

At least 3 fixing bolts 13 are arranged, the fixing bolts 13 are uniformly distributed on a circular ring structure formed by the first component 11 and the second component 12, and the fixing bolts 13 penetrate through the circular ring structure along the direction towards the circle center of the circular ring structure;

specifically, in the scheme, the high-voltage transmission line clamped in the first wire clamp 1 can be fixedly reinforced by adjusting the fixing bolt 13; it should be noted that, although the fixing bolt 13 is designed to further fix the high voltage power transmission line in the present embodiment, the design is not limited to this as long as the fixing bolt can further fix the high voltage power transmission line at this position.

The connecting bar 14 connects the first wire guide 1 and the wire guide frame 3.

Specifically, in this scheme, connecting rod 14 connects first wire clamp 1 and wire frame 3, so design, can when first wire clamp 1 or wire frame 3 either subassembly appear damaging, need not to replace the whole device, only need to replace corresponding damaged part can, further hoisting device life, reduce cost.

Further, the lightning receptor 4 further comprises:

a fixed sleeve 42 and a lightning rod 43;

the fixed sleeve 42 is a hollow columnar structure, one end of the fixed sleeve 42 is connected with the lightning receiving base 41, and the other end of the fixed sleeve 42 has a preset length along the direction far away from the lightning receiving base 41;

lightning rod 43 is the needle-like structure, lightning rod 43 one end with fixed sleeve 42 cavity bottom is connected, the lightning rod 43 other end is along keeping away from fixed sleeve 42 direction extension.

Specifically, in this scheme, consider that the firm degree of the structure of arrester 4 is relatively poor, and, lightning rod 43 direct with lightning rod 41 welds, and after the welding department appeared ageing, the condition of rupture appeared very easily in lightning rod 43, consequently sets up fixed sleeve 42 on lightning rod 41, will lightning rod 43 weld in fixed sleeve 42's bottom, and the condition of rupture appears in lightning rod 43 because of ageing corruption scheduling problem that can be very big improvement.

Further, the lightning conductor hook 5 includes a first hook arm 51, a second hook arm 52 and a hook base 53;

the first hook arm 51 and the second hook arm 52 are semi-circular structures, and the first hook arm 51 and the second hook arm 52 are connected in a sliding manner to form a circular structure with an opening;

specifically, in this scheme, with lightning conductor couple 5 designs into first couple arm 51 with sliding connection between second couple arm 52 can realize adjusting lightning conductor couple 5 central hole size, is more convenient for the fixed lightning conductor of lightning conductor couple 5.

One end of the base 53 is connected to the ring structure with the opening, and the other end is connected to the ground lead 6.

Specifically, in this scheme, the lightning conductor hook 5 is directly connected with the ground lead 6 to be further designed, a base 53 is arranged on the lightning conductor hook 5, the ground lead 6 is connected with the base 53, and the connection between the lightning conductor hook 5 and the ground lead 6 is further strengthened.

Furthermore, a rubber gasket is arranged at one end of the fixing bolt 13 facing the center of the first wire clamp 1.

Specifically, in this scheme, because fixing bolt 13 is metal material and has certain screw thread, can appear wearing and tearing to high voltage transmission line when consolidating high voltage transmission line, consequently fixing bolt 13 sets up the rubber material gasket towards centre of a circle one end, has prevented the emergence of above problem.

As can be seen from fig. 3, the following design is also provided for the lightning conductor hook 5;

further, a fixing head 511 is arranged at one end of the first hook arm 51 far away from the hook base 53;

one end of the second hook arm 52, which is far away from the hook base 53, is provided with a fixing opening 521 corresponding to the fixing head 511;

bolt holes are provided in the fixing head 511 and the fixing opening 521, and the fixing head 511 and the fixing opening 521 are fixed by the bolt holes when the fixing head 511 is slidably fitted into the fixing opening 521.

Specifically, considering that the lightening conductor is fixed only by adjusting the center circular hole of the lightening conductor hook 5, the lightening conductor hook 5 still has the situation of looseness, so that the first hook arm 51 is provided with a fixing head 511, the second hook arm 52 is provided with a corresponding fixing opening 521, and the fixing head 511 and the fixing opening 521 are provided with bolt holes; when the size of the lightning conductor is moderate, the fixing head 511 and the fixing opening 521 can be nested together and fixed by bolts, and when the size of the lightning conductor is slightly larger, a string can be used to pass through the fixing head 511 and the fixing opening 521 to fix the lightning conductor.

As can be seen from fig. 1, 4 and 5, the device for preventing shielding failure of a high-voltage transmission line provided by the present application further includes the following design;

further, embedded slideways are arranged on the first connecting arm 31 and the second connecting arm 32, and the first connecting arm 31 and the second connecting arm 32 penetrate through the slideways through bolts to be connected.

Furthermore, an embedded slide way is arranged on the third connecting arm 33 and the fourth connecting arm 34, and the third connecting arm 33 and the fourth connecting arm 34 penetrate through the slide way through a bolt to be connected.

Further, embedded slideways are arranged on the first hook arm 51 and the second hook arm 52, and the first hook arm 51 and the second hook arm 52 are connected through the slideways by bolts.

Specifically, above three kinds of designs all relate to the connection between embedded slide and the bolt, through this kind of design, can prevent the non-parallel wrench movement, further promote device's stability can.

The application provides a high tension transmission line prevents around hitting device, and the device includes: the first wire of centre gripping high tension transmission line presss from both sides 1 and the second wire presss from both sides 2, fixes the wire frame 3 that first wire pressed from both sides 1 and the second wire pressed from both sides 2, with the arrester 4 of wire frame 3 external connection, with the ground lead 6 that the arrester 4 is connected, with the lightning conductor couple 5 that ground lead 6 is connected. Through the connection of wire clamp, wire frame 3 and arrester 4, solved conventional arrester 4 and installed in shaft tower department and cause the problem that protective range is little, through the structure that sets up ground lead 6 and lightning conductor couple 5, realized that the connection distance of wire and lightning conductor is controllable. The device has better economical efficiency and effect, and has better inhibiting effect on the phenomenon of high shielding failure tripping rate existing in the high-voltage transmission line. Meanwhile, the installation is simple, the distance can be flexibly adjusted according to the splitting widths of different lines, and the lines are not damaged while the lines are firmly connected with the conducting wires and the lightning conductors.

Claims (10)

1. An anti-shielding failure device for a high-voltage transmission line, the device comprising:

a first wire clamp (1) and a second wire clamp (2) for clamping a high-voltage transmission line;

the device also comprises a lead frame (3) for fixing the first lead clamp (1) and the second lead clamp (2), wherein the first lead clamp (1) and the second lead clamp (2) are arranged on two sides inside the lead frame (3);

the device also comprises a lightning receptor (4) positioned on one side of the outer part of the lead frame (3), wherein the lightning receptor (4) comprises a lightning receptor base (41) connected with the lead frame (3);

the device also comprises a grounding lead (6) with one end connected with the lightning receiving base (41);

the device also comprises a lightning conductor hook (5) connected with the other end of the grounding lead (6).

2. The device for protecting a high voltage transmission line from shielding failure according to claim 1, wherein the wire frame (3) comprises:

a first connecting arm (31), a second connecting arm (32), a third connecting arm (33) and a fourth connecting arm (34);

the first connecting arm (31), the second connecting arm (32), the third connecting arm (33) and the fourth connecting arm (34) are connected end to form a rectangular structure;

first linking arm (31) with second linking arm (32) are along horizontal direction sliding connection, third linking arm (33) with fourth linking arm (34) are along horizontal direction sliding connection, first linking arm (31) with fourth linking arm (34) bolted connection, second linking arm (32) with third linking arm (33) bolted connection.

3. The high voltage transmission line protection against shielding failure device according to claim 1, wherein said first wire clamp (1) comprises:

a first component (11), a second component (12), a fixing bolt (13) and a connecting rod (14);

the first assembly (11) and the second assembly (12) are of semicircular structures, and the first assembly (11) and the second assembly (12) are connected through bolts end to form a circular structure;

the number of the fixing bolts (13) is at least 3, the fixing bolts (13) are uniformly distributed on a circular ring structure formed by the first assembly (11) and the second assembly (12), and the fixing bolts (13) penetrate through the circular ring structure along the circle center direction of the circular ring structure;

the connecting rod (14) is connected with the first wire clamp (1) and the wire frame (3).

4. The high voltage transmission line anti-strike arrangement according to claim 1, wherein the lightning receptor (4) further comprises:

a fixed sleeve (42) and a lightning rod (43);

the fixed sleeve (42) is of a hollow columnar structure, one end of the fixed sleeve (42) is connected with the lightning receiving base (41), and the other end of the fixed sleeve (42) is provided with a preset length along the direction far away from the lightning receiving base (41);

connect dodge pole (43) to be needle-like structure, connect dodge pole (43) one end with fixed sleeve (42) cavity bottom is connected, connect dodge pole (43) other end along keeping away from fixed sleeve (42) direction extension.

5. The device for preventing the shielding failure of the high-voltage transmission line according to claim 1, wherein the lightning conductor hook (5) comprises a first hook arm (51), a second hook arm (52) and a hook base (53);

the first hook arm (51) and the second hook arm (52) are of semicircular structures, and the first hook arm (51) and the second hook arm (52) are connected in a sliding mode to form a circular structure with an opening;

one end of the base (53) is connected with the annular structure with the opening, and the other end of the base is connected with the grounding lead (6).

6. The device of claim 3, wherein a rubber gasket is arranged at one end of the fixing bolt (13) facing the center of the first wire clamp (1).

7. The device for preventing the shielding failure of the high-voltage transmission line according to claim 5, wherein a fixed head (511) is arranged at one end of the first hook arm (51) far away from the hook base (53);

one end, far away from the hook base (53), of the second hook arm (52) is provided with a fixing opening (521) corresponding to the fixing head (511);

bolt holes are formed in the fixing head (511) and the fixing opening (521), and when the fixing head (511) is slidably inserted into the fixing opening (521), the fixing head (511) and the fixing opening (521) are fixed through the bolt holes.

8. The device according to claim 2, wherein the first connecting arm (31) and the second connecting arm (32) are provided with embedded slideways, and the first connecting arm (31) and the second connecting arm (32) are connected through the slideways by bolts.

9. The device according to claim 2, wherein an embedded slideway is arranged on the third connecting arm (33) and the fourth connecting arm (34), and the third connecting arm (33) and the fourth connecting arm (34) are connected by penetrating through the slideway through a bolt.

10. The device according to claim 7, wherein the first and second hook arms (51, 52) are provided with embedded slideways, and the first and second hook arms (51, 52) are connected through the slideways by bolts.

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