CN106655049A - Anti-galloping device for power transmission line - Google Patents

Abstract

The invention provides an anti-galling device for a power transmission line. The device includes: a frame body, at least two connecting plates, and wire clamps; wherein, the wire clamps are set in one-to-one correspondence with the connecting plates; each of the wire clamps includes a buffer mechanism and a clamping mechanism, wherein the The buffer mechanism is sleeved on the outside of the transmission line, the clamping mechanism is sleeved on the outside of the buffer mechanism, and the clamping mechanism is also connected to the frame through the connecting plate. In the present invention, a buffer mechanism is arranged between the clamping mechanism and the transmission line. Since the buffer mechanism has an energy-absorbing effect, the abrasion of the transmission line by the clamping mechanism is greatly reduced; when the transmission line is subjected to a downward pulling force, the buffer The mechanism can also reduce the local stress of the transmission line and improve the safety performance of the transmission line. In addition, when the buffer mechanism is a pre-twisted wire wound outside the transmission line, the pre-twisted wire also has a certain holding force on the transmission line, which increases the reliability of the connection.

Description

Anti-galling device for transmission line

technical field

The invention relates to the technical field of power systems, in particular to an anti-galling device for transmission lines.

Background technique

In my country's power grid meteorological disasters, the ice-covered galloping of overhead conductors is a form of natural disasters with high frequency, wide range of influence, and large losses. With the rapid development of my country's power grid scale and the frequent occurrence of severe weather, since the beginning of the new century, the frequency of galloping accidents in the power grid has increased significantly, and the degree of harm has increased significantly. Large-scale galloping accidents have occurred almost every year, causing serious economic damage. loss and social impact.

At present, spacers are mainly used to support the sub-conductors in the transmission lines of our country. When in use, the spacers are installed between the sub-conductors of the transmission line, and the collision between the sub-conductors is prevented by the function of the spacers. Referring to Fig. 1 , a common spacer includes a frame body 1' and a wire clip 2' connected to the frame body 1', and the wire clip 2' is also used for connecting with a power transmission line. Generally speaking, the direct clamping method is adopted between the clamp 2' and the transmission line. It can be seen that in this connection mode, the clamp 2' is directly clamped on the transmission line, and the wear and tear on the insulation layer of the transmission line is relatively large. Large, when subjected to a downward pull, it is easy to cause local stress concentration, and the voltage transmitted by the transmission line is relatively high. If the transmission line is subject to a large local stress, there will be a major safety hazard.

Contents of the invention

In view of this, the present invention proposes an anti-galling device for transmission lines, which aims to solve the safety problem caused by the existing clamps easily causing relatively large local stress on the transmission line when the spacer is subjected to tension.

In one aspect, the present invention provides an anti-galling device for power transmission lines, which includes: a frame, at least two connecting plates, and wire clips; wherein, the wire clips are arranged in one-to-one correspondence with the connecting plates; each Each of the clamps includes a buffer mechanism and a clamping mechanism, wherein the buffer mechanism is sleeved on the outside of the transmission line, the clamping mechanism is sleeved on the outside of the buffer mechanism, and the clamping The mechanism is also connected with the frame body through the connecting plate.

Further, in the above-mentioned anti-galling device for transmission lines, the buffer mechanism is a pre-twisted wire, a protective wire or an aluminum tape wrapped around the outside of the transmission line.

Further, in the above-mentioned anti-galling device for transmission lines, the clamping mechanism includes: a casing and a hoop; wherein, the casing is sleeved on the outside of the buffer mechanism, and the hoop is sleeved on the The outside of the casing, and the hoop is connected to the frame through the connecting plate.

Further, in the above-mentioned anti-galling device for power transmission lines, the casing includes: a first casing and a second casing; wherein, the first casing and the second casing are fastened to the buffer mechanism outside; the hoop is sleeved on the first shell and the second shell, so that the first shell and the second shell clamp the buffer mechanism.

Further, in the above-mentioned anti-galling device for transmission lines, both the first housing and the second housing are semi-circular, and the inner diameter of the semi-circular body gradually increases from the middle to both ends .

Further, in the above-mentioned anti-galling device for transmission lines, the hoop includes: bolts and U-shaped plates; wherein, the two sides opposite to the open end of the U-shaped plate are correspondingly provided with threaded holes; the U-shaped plate The closed end of the U-shaped plate is sleeved on the outside of the casing, and the threaded holes on the two sides of the open end are connected through the bolts; the U-shaped plate is also connected with the frame body through the connecting plate.

Further, in the above-mentioned anti-galling device for transmission lines, one end of the connecting plate is sandwiched between the two sides of the opening end of the U-shaped plate, and the bolts are also passed through the connecting plate to The connecting plate is connected with the U-shaped plate.

Further, in the above-mentioned anti-galling device for transmission lines, the pre-twisted wires, guard bars or aluminum tapes have a preset length along the axial direction of the transmission lines.

Further, in the above-mentioned anti-galling device for transmission lines, an elastic gasket is interposed between the buffer mechanism and the transmission line and at a position corresponding to the casing.

Further, the above-mentioned anti-galling device for power transmission lines further includes: reinforcing ribs; wherein, the reinforcing ribs are connected to the inside of the frame.

In the present invention, a buffer mechanism is arranged between the clamping mechanism and the transmission line. Since the buffer mechanism has an energy-absorbing effect, the abrasion of the transmission line by the clamping mechanism is greatly reduced; when the transmission line is subjected to a downward pulling force, the buffer The mechanism can also reduce the local stress of the transmission line and improve the safety performance of the transmission line. In addition, when the buffer mechanism is a pre-twisted wire wound outside the transmission line, the pre-twisted wire also has a certain holding force on the transmission line, which increases the reliability of the connection.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same components. In the attached picture:

Fig. 1 is the structural representation of spacer in the related art;

Fig. 2 is a schematic structural view of an anti-galling device for a power transmission line provided by an embodiment of the present invention;

3 is a schematic diagram of the use state of the anti-galling device for transmission lines provided by the embodiment of the present invention;

4 is a schematic structural view of the hoop in the anti-galling device for transmission lines provided by the embodiment of the present invention;

5 is a schematic structural view of a connecting plate in an anti-galling device for a power transmission line provided by an embodiment of the present invention;

Fig. 6 is another schematic structural view of the connecting plate in the anti-galling device for transmission lines provided by the embodiment of the present invention;

Fig. 7 is a structural schematic diagram of a frame in the anti-galling device for transmission lines provided by the embodiment of the present invention;

Fig. 8 is a schematic diagram of another usage state of the anti-galling device for transmission lines provided by the embodiment of the present invention.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to FIG. 2 to FIG. 4 , the preferred structures of the anti-galling device for transmission lines provided by the embodiments of the present invention are shown in the figures. As shown in the figure, the device includes: a frame body 1 , at least two connecting plates 2 and a wire clip 3 .

Wherein, the number of wire clamps 3 and connecting plates 2 is the same, and they are set in one-to-one correspondence. Each wire clamp 3 includes a buffer mechanism 32 and a clamping mechanism. Wherein, the buffer mechanism 32 is sleeved on the outside of the transmission line 4 , the clamping mechanism is sleeved on the outside of the buffer mechanism 32 , and the clamping mechanism is also connected to the frame body 1 through the connecting plate 2 . The function of the buffer mechanism 32 is to wrap the outside of the transmission line 4 and have an energy-absorbing effect. In practice, the buffer mechanism 32 can be pre-twisted wire, protective wire, aluminum wrapping tape, etc. wrapped around the outside of the transmission line 4 .

One end of the clamping mechanism is wrapped around the buffer mechanism 32 for clamping the buffer mechanism 32 , and the other end of the clamping mechanism is connected to the frame body 1 through a connecting plate. During specific implementation, the frame body 1 may be an annular frame body.

It should be noted that, during specific implementation, the number of wire clips 3 and connecting plates 2 may be determined according to actual conditions, which are not limited in this embodiment.

In the embodiment of the present invention, a buffer mechanism 32 is provided between the clamping mechanism and the transmission line 4. Since the buffer mechanism 32 has an energy-absorbing effect, the abrasion of the clamping mechanism to the transmission line 4 is greatly reduced; when the transmission line 4 is subjected to When pulling downward, the buffer mechanism 32 can also reduce the local stress of the transmission line 4 and improve the safety performance of the transmission line. In addition, when the buffer mechanism 32 is a pre-twisted wire wound around the outside of the transmission line 4, the pre-twisted wire also has a certain holding force on the transmission line 4, which increases the reliability of the connection.

Continuing to refer to FIG. 2 to FIG. 4 , the clamping mechanism may further include: a casing 34 and a hoop 31 . Wherein, the casing 34 is sleeved on the outside of the buffer mechanism 32 , the hoop 31 is sleeved on the outside of the casing 34 , and the hoop 31 is connected to the frame body 1 through the connecting plate 2 . Hereinafter, the present embodiment will be described in detail by taking the buffer mechanism 32 as an example of pre-twisted wire wound around the outside of the transmission line 4 .

Specifically, the casing 34 may include: a first shell 341 and a second shell 342 . Wherein, the first casing 341 and the second casing 342 are fastened on the outside of the pre-twisted wires, and are used to wrap the pre-twisted wires. The hoop 31 is sleeved on the outside of the first shell 341 and the second shell 342 to apply force to the first shell 341 and the second shell 342 so that the first shell 341 and the second shell 342 Clamp pre-twisted wire. The hoop 31 may include: a first bolt 312 and a U-shaped plate 311; wherein, the two sides opposite to the open end of the U-shaped plate are provided with threaded holes; the closed end of the U-shaped plate is sleeved on the outside of the casing 34, The threaded holes on opposite sides of the open end are connected by first bolts 312 , and the force exerted by the closed end of the U-shaped plate on the casing 34 can be adjusted by screwing the first bolts 312 . In addition, the U-shaped board is also connected to the frame body 1 through the connecting board.

It can be seen that the clamping mechanism in this embodiment has a relatively simple structure and is easy to install and disassemble.

Referring to Fig. 5 and Fig. 6, in the above embodiment, the connecting plate 2 may be a right-angle hanging plate. Specifically, one end of the connecting plate (the lower end shown in Fig. 5 and Fig. 6 ) is sandwiched between the two sides of the open end of the U-shaped plate, and the connecting plate 2 is also provided with bolt holes, and the first bolt 312 is also penetrated. The bolt holes on the connecting plate 2 are used to connect the connecting plate 2 and the U-shaped plate 311. The other end of the connecting plate 2 (the upper end shown in Fig. 5 and Fig. 6 ) is provided with a card slot 21, and the frame body 1 is snapped into the card slot 21, and the connecting plate 2 and the frame body 1 correspond to the card slot 21 Some bolt holes are opened, and the frame body 1 and the connecting plate 2 are connected through the second bolts 314 passing through the connecting holes. This connection structure is relatively simple and easy to implement. During specific implementation, in order to lock the first bolt 312 and the second bolt 314 , locking pins 313 may also be provided on the first bolt 312 and the second bolt 314 .

Referring to Fig. 3 and Fig. 8, in each of the above-mentioned embodiments, the pre-twisted wire, the protective wire or the aluminum tape that is wound has a predetermined length along the axial direction of the transmission line 4, because the pre-twisted wire 32, the protective wire or the aluminum tape It has a preset length, which increases the contact area between the pre-twisted wire 32, the protective wire or the aluminum tape and the transmission line 4, thereby reducing the pressure applied by the hoop 31 on the power line 4, and reducing the impact of the hoop 31 on the transmission line 4. Abrasion and localized stresses on transmission lines 4. It should be noted that the preset length of the pre-twisted wire 32 can be determined according to the actual situation, which is not limited in this embodiment.

Further, an elastic gasket 33 is interposed between the pre-twisted wire 32 , the protective wire or the aluminum tape and the power line 4 at a position corresponding to the casing 34 . Specifically, the elastic gasket 33 may be a rubber tile. In this embodiment, an elastic gasket 33 is added between the pre-twisted wire 32, the protective wire or the aluminum tape and the hoop 31, which can further buffer the pressure of the hoop 31 on the transmission line 4, and further reduce the pressure on the transmission line. 4 wear and reduce local stress.

Furthermore, the casing 34 is formed by buckling the first shell 341 and the second shell 342 . After the elastic gasket 33 is arranged on the outside of the transmission line 4, the pre-twisted wire 32 wound on the outside of the elastic gasket 33 will be diffused in a thin middle and thick at both sides. In order to make the casing 34 fit the shape, Therefore, in this embodiment, both the first casing 341 and the second casing 342 of the casing 34 can be semi-circular, and the inner diameter of the semi-circular body gradually increases from the middle to both ends.

Referring to FIG. 7 , in order to enhance the strength of the frame body 1 , in each of the above-mentioned embodiments, a reinforcing rib 11 may also be included. Wherein, the reinforcing rib 11 is connected to the inside of the frame body 1 . In practice, there may be one or more reinforcing ribs 11 , and both ends of each reinforcing rib 11 are connected with the inner wall of the frame body 1 .

To sum up, in the embodiment of the present invention, a buffer mechanism 32 is added between the hoop 31 and the transmission line 4. Since the buffer mechanism 32 has a certain holding force on the transmission line 4 and has a certain buffering effect, it is greatly smaller. Reduce the wear of the hoop 31 on the transmission line 4, and improve the safety performance of the transmission line

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (10)

1. An anti-galling device for transmission lines is characterized in that it comprises: a frame (1), at least two connecting plates (2) and wire clamps (3); wherein, The wire clips (3) are provided in one-to-one correspondence with the connecting plate (2); each of the wire clips (3) includes a buffer mechanism (32) and a clamping mechanism, wherein the buffer mechanism (32) Sleeved on the outside of the transmission line (4), the clamping mechanism is sleeved on the outside of the buffer mechanism (32), and the clamping mechanism is also connected to the connecting plate (2) The frames (1) are connected. 2. The anti-galling device for transmission lines according to claim 1, characterized in that, the buffer mechanism (32) is a pre-twisted wire, a protective wire or an aluminum tape wound around the outside of the transmission line (4) . 3. The anti-galling device for transmission lines according to claim 1, characterized in that, the clamping mechanism comprises: a casing (34) and a hoop (31); wherein, the casing (34) is sheathed On the outside of the buffer mechanism (32), the hoop (31) is sheathed on the outside of the casing (34), and the hoop (31) connects with the connecting plate (2) The frame (1) is connected. 4. The anti-galling device for transmission lines according to claim 3, characterized in that, the casing (34) comprises: a first housing (341) and a second housing (342); wherein, The first shell (341) and the second shell (342) are fastened to the outside of the buffer mechanism (32); The hoop (31) is sheathed on the first shell (341) and the second shell (342), so that the first shell (341) and the second shell (342) clamp Tighten the buffer mechanism (32). 5. The anti-galling device for transmission lines according to claim 4, characterized in that, both the first housing (341) and the second housing (342) are semicircular rings, and the The inner diameter of the semi-circular body gradually increases from the middle to both ends. 6. The anti-galling device for transmission lines according to claim 3, characterized in that, the hoop (31) comprises: bolts (312) and U-shaped plates (311); wherein, the U-shaped plates (311 ) are provided with threaded holes on the opposite sides of the open end; The closed end of the U-shaped plate is sleeved on the outside of the casing (34), and the threaded holes on the two sides of the open end are connected by the bolts (312); The U-shaped plate (311) is also connected to the frame body (1) through the connecting plate (2). 7. The anti-galling device for transmission lines according to claim 6, characterized in that, one end of the connecting plate (2) is sandwiched between two sides of the open end of the U-shaped plate (311), and , the bolt (312) is also passed through the connecting plate (2) to connect the connecting plate (2) with the U-shaped plate (311). 8 . The anti-galling device for transmission lines according to claim 2 , characterized in that, the pre-twisted wire, protective wire or aluminum tape has a preset length along the axial direction of the transmission line ( 4 ). 9. The anti-galling device for transmission lines according to any one of claims 1 to 8, characterized in that, between the buffer mechanism (32) and the transmission line (4) and corresponding to the casing The position of (34) is also clamped with elastic gasket (33). 10. The anti-galling device for transmission lines according to any one of claims 1 to 8, characterized in that it further comprises: reinforcement ribs (11); wherein, the reinforcement ribs (11) are connected to the frame body (1) The inner wall.