CN106571609A - 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 connecting rod, a grounding device, and two spacer rods for connecting with the transmission line; wherein, the two spacer rods are connected through a connecting rod; the first end of the grounding device is connected to the connecting rod The second end is used to connect to the earth. Compared with the way in which the spacer rods are suspended in the air in the prior art, the present invention connects the two spacer rods connected by connecting rods to the ground through the grounding device, and then exerts a downward pulling force on the spacer rods to increase the distance The stability of the rod, which in turn enhances the anti-galling effect of the transmission line and improves the stability of the transmission line. In addition, in this embodiment, the two spacers are connected as a whole through a connecting rod, which increases the anti-galling effect.

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. The common spacer includes a frame body and a wire clip connected with the frame body, and the wire clip is also used for connecting with a power transmission line. Generally speaking, direct clamping and other methods are used between the clamp and the transmission line. It can be seen that in this connection mode, the clamp is directly clamped on the transmission line, which will cause greater wear and tear on the insulation layer of the transmission line. When the pulling force is downward, it is easy to cause local stress concentration, and the voltage transmitted by the transmission line is relatively high. If the transmission line is subjected to a large local stress, there will be a major safety hazard. In addition, since the spacer is still suspended in the air, it has been proved by practice that the effect of this kind of anti-galling is not ideal.

Contents of the invention

In view of this, the present invention proposes an anti-galling device for transmission lines, aiming at solving the problem that the anti-galling effect of existing spacers is not ideal enough.

In one aspect, the present invention provides an anti-galling device for a power transmission line, which device includes: a connecting rod, a grounding device, and two spacers used to connect with the power transmission line; wherein, the two spacers are connected by a connecting rod ; The first end of the grounding device is connected to the connecting rod, and the second end is used to connect to the ground.

Further, in the above-mentioned anti-galling device for power transmission lines, each of the spacer bars includes: a frame body, at least two first connecting plates, and wire clamps; wherein, the wire clamps correspond to the first connecting plates one by one Setting; 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, and the clamping mechanism is sleeved on the outside of the buffer mechanism, and, The clamping mechanism is also connected to the frame body through the first connecting plate.

Further, in the above-mentioned anti-galling device for power transmission lines, the buffer mechanism is a pre-twisted wire, a protective wire or an aluminum-clad tape wound around the outside of the transmission line, and the pre-twisted wire, protective wire or aluminum-clad The belt has a predetermined length along the axial direction of the power 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 first 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; the hoop includes: Bolts and U-shaped plates; 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 outside the casing, and the two sides of the open end The threaded holes on the top are connected through the bolts; the U-shaped plate is also connected with the frame body through the first connecting plate.

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, an elastic gasket is interposed between the buffer mechanism and the transmission line and corresponding to the position of the casing; and/or, the inner wall of the frame Reinforcing ribs are also provided.

Further, in the above-mentioned anti-galling device for power transmission lines, the grounding device includes: a first connection assembly, an insulator, and a second connection assembly; wherein, the first end of the insulator is connected to the spacer bar through a first connection body. connected, and the second end of the insulator is connected to the ground through the second connecting body.

Further, in the above-mentioned anti-galling device for transmission lines, the insulator is a disc insulator; the first connection assembly includes: a connecting rod, a ball hanging ring and a second connecting plate; wherein, the first connection plate of the connecting rod The end is connected with the frame, the first end of the ball hanging ring is connected with the first end of the disc insulator, and the second end of the connecting rod is connected with the ball through the second connecting plate. The second end of the hanging loop is connected.

Further, in the above-mentioned anti-galling device for transmission lines, the second connection assembly includes: a bowl hanging plate, a connector and a pre-twisted tension clamp; wherein, the first end of the bowl hanging plate is connected to the The second end of the disc-shaped insulator is connected, the second end of the bowl head hanging plate is connected with the first end of the pre-twisted tension clamp through a connector, the first end of the pre-twisted tension clamp The two ends are used to connect with the earth.

Compared with the way in which the spacer rods are suspended in the air in the prior art, the present invention connects the two spacer rods connected by connecting rods to the ground through the grounding device, and then exerts a downward pulling force on the spacer rods to increase the distance between them. The stability of the rod, which in turn enhances the anti-galling effect of the transmission line and improves the stability of the transmission line. In addition, in this embodiment, the two spacers are connected as a whole through a connecting rod, which increases the anti-galling effect.

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 parts. In the attached picture:

Fig. 1 is the schematic structural view of the anti-galling device for transmission lines provided by the embodiment of the present invention;

Fig. 2 is a structural schematic diagram of another angle of the anti-galling device for transmission lines provided by the embodiment of the present invention

Fig. 3 is a schematic structural view of spacers in the anti-galling device for transmission lines provided by the embodiment of the present invention;

4 is a schematic diagram of the installation state of the spacer in the anti-galling device for the transmission line provided by the embodiment of the present invention;

Fig. 5 is a schematic structural diagram of the hoop in the anti-galling device for transmission lines provided by the embodiment of the present invention;

6 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. 7 is another structural schematic diagram of the connecting plate in the anti-galling device for transmission lines provided by the embodiment of the present invention;

Fig. 8 is a structural schematic diagram of a frame in the anti-galling device for transmission lines provided by an embodiment of the present invention;

Fig. 9 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. 1 and Fig. 2, the preferred structure of the anti-galling device for transmission lines provided by the embodiment of the present invention is shown in the figures. As shown in the figure, the device includes: a connecting rod C, a grounding device B, and two spacer rods A for connecting with power transmission lines. Wherein, the two spacer rods A are connected through the connecting rod C; the first end of the grounding device B is connected with the connecting rod C, and the second end is used for connecting with the ground.

In a specific implementation, the spacer A can be an interphase spacer well known to those skilled in the art. The function of the grounding device B is to connect the spacer A to the ground, so as to apply tension to the spacer A and increase the stability of the spacer A. In practice, the grounding device B has various structures, and this embodiment does not make any reference to it. Any restrictions.

It can be seen that, compared with the way in which the spacer rods are suspended in the air in the prior art, this embodiment connects the two spacer rods A connected through the connecting rod C to the ground through the grounding device B, and then the spacer rods A A downward pulling force is applied to increase the stability of the spacer, thereby enhancing the anti-galling effect of the transmission line and improving the stability of the transmission line. In addition, in this embodiment, the two spacer rods A are connected as a whole through the connecting rod C, which increases the anti-galling effect.

Referring to Fig. 3 and Fig. 4, the preferred structure of the spacer bar A is shown in the figure. As shown in the figure, the device includes: a frame body 1 , at least two first connecting plates 2 and a wire clamp 3 .

Wherein, the number of the wire clips 3 and the first connecting plate 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 5 , and 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 first connecting plate 2 . The function of the buffer mechanism 32 is to wrap the outside of the transmission line 5 and have an energy-absorbing effect. In practice, the buffer mechanism 32 can be a pre-twisted wire, a protective wire, or an aluminum tape wrapped around the outside of the transmission line 5 .

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 numbers of the wire clips 3 and the first connecting plates 2 can 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 5. Since the buffer mechanism 32 has an energy-absorbing effect, the wear of the clamping mechanism on the transmission line 5 is greatly reduced; when the transmission line 5 is subjected to When pulling downward, the buffer mechanism 32 can also reduce the local stress of the transmission line 5 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 5, the pre-twisted wire also has a certain holding force on the transmission line 5, which increases the reliability of the connection.

Continuing to refer to FIG. 3 to FIG. 5 , the clamping mechanism may further include: a casing 34 and a hoop 31 . Wherein, the shell 34 is sheathed on the outside of the buffer mechanism 32 , the hoop 31 is sheathed on the outside of the shell 34 , and the hoop 31 is connected to the frame body 1 through the first connecting plate 2 . Hereinafter, the present embodiment will be described in detail by taking the buffer mechanism 32 as an example of a pre-twisted wire wound around the outside of the transmission line 5 .

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. 6 and Fig. 7, in the above embodiment, the first connecting plate 2 may be a right-angle hanging plate. Specifically, one end of the connecting plate (the lower end shown in Fig. 6 and Fig. 7) is sandwiched between the two sides of the open end of the U-shaped plate, and the first connecting plate 2 is also provided with bolt holes, and the first bolt 312 is also provided. The bolt holes on the first connecting plate 2 are pierced to connect the first connecting plate 2 with the U-shaped plate 311 . The other end of the connecting plate 2 (the upper end shown in Fig. 6 and Fig. 7) is provided with a draw-in groove 21, and the frame body 1 is snapped into the draw-in groove 21, and the first connecting plate 2 and the frame body 1 are in contact with the draw-in groove 21. Corresponding parts are provided with bolt holes, and the frame body 1 and the first connecting plate 2 are connected by 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. 4 and Fig. 9, in each of the above-mentioned embodiments, the winding pre-twisted wire, protective wire or aluminum tape has a predetermined length along the axial direction of the transmission line 5, 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 5, thereby reducing the pressure applied by the hoop 31 on the power line 5, and reducing the impact of the hoop 31 on the transmission line 5. Abrasion and localized stresses on transmission lines 5. 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 5 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 5, and further reduce the pressure on the transmission line. 5 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 5, 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. 8 , 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 .

Referring to FIG. 1 , the figure also shows a preferred structure of the grounding device 2 . As shown in the figure, the grounding device 2 includes: a first connecting component, an insulator 41 and a second connecting component. Wherein, the first end of the insulator 41 is connected to the spacer bar 1 through the first connecting body, and the second end of the insulator 41 is connected to the ground through the second connecting body.

It can be seen that in this embodiment, an insulator 41 is provided in the grounding device B, the first connection component connects the insulator 41 to the spacer bar 1 , and the second connection component connects the insulator 41 to the ground. The arrangement of the insulator 21 isolates the spacer bar A from the ground, prevents it from being broken down and forms a circuit with the ground, and improves the safety of the anti-swinging device.

Further, the insulator 21 may be a disc insulator, and the first connection assembly may include: a connecting rod 22 , a ball hanging ring 23 and a second connection plate 44 . Wherein, the first end (the upper end shown in FIG. 1 ) of the connecting rod 42 is connected with the frame body 1, and the first end (the lower end shown in FIG. 1 , that is, the ball end) of the ball hanging ring 43 is connected with the disc insulator The first end (the upper end shown in Figure 1) is connected, the second end (the lower end shown in Figure 1) of the connecting rod 42 passes through the second connecting plate 44 and the second end of the ball hanging ring 43 (shown in Figure 1 connected to the upper end shown).

During specific implementation, the first end of the connecting rod 41 may also be connected to the frame body 1 through a U-shaped ring 46 . The closed end of the U-shaped ring 46 is bolted to the frame body 1 , the first end of the connecting rod 42 is inserted into the open end of the U-shaped ring 46 , and the open end of the U-shaped ring is connected to the connecting rod 42 by bolts.

During specific implementation, the second end of the connecting rod 42 can be bolted to the first end (the upper end shown in FIG. 1 ) of the connecting plate 44, and the second end of the second connecting plate 44 is provided with a slot, and the ball joint ring 43 The second end of the connecting plate 44 is plugged into the slot and connected with the second end of the connecting plate 44 by bolts.

It can be seen that, in this embodiment, the first connection assembly is formed by connecting a plurality of connecting parts with bolts, and this connection method is relatively easy to install and disassemble.

Continue to refer to FIG. 1 , the second connecting assembly may include: a bowl hanging plate 45 , a connecting piece and a pre-twisted strain clamp 47 . Wherein, the first end of the bowl hanging plate 45 is connected with the second end (the lower end shown in Fig. 1 ) of the dish insulator 41, and the second end of the bowl hanging plate 45 is connected with the pre-twisted type tension wire by the connector. The first end (the upper end shown in FIG. 1 ) of the clamp 47 is connected, and the second end (the lower end shown in FIG. 1 ) of the pre-twisted tension clamp 47 is used to connect to the ground.

During specific implementation, the connector can include a U-shaped hanging ring 48 and a PD hanging plate 49, wherein the open end of the U-shaped hanging ring 28 is connected with the second end of the bowl head hanging plate 45 by bolts, and the U-shaped hanging ring 48 The closed end is connected with the pre-twisted tension clamp 47 through the PD hanging plate 49 .

In summary, this embodiment connects the spacer rods to the ground through the grounding device, and then exerts a downward pulling force on the spacer rods to increase the stability of the spacer rods, thereby enhancing the anti-galling effect of the transmission line and improving the safety of the transmission line. stability.

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 equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims (10)

1. Anti-galloping device for power transmission line, its characterized in that includes: the connecting rod, the grounding device and the two spacing rods are used for being connected with the power transmission line; wherein,

the two spacing rods are connected through a connecting rod;

the first end of the grounding device is connected with the connecting rod, and the second end of the grounding device is used for being connected with the ground.

2. The anti-galloping device for the power transmission line of claim 1, wherein each spacer comprises: the cable clamp comprises a frame body (1), at least two first connecting plates (2) and a cable clamp (3); wherein,

the wire clamps (3) are arranged in one-to-one correspondence with the first connecting plates (2); each wire clamp (3) comprises a buffer mechanism (32) and a clamping mechanism, wherein the buffer mechanism (32) is sleeved outside the power transmission line (5), the clamping mechanism is sleeved outside the buffer mechanism (32), and the clamping mechanism is further connected with the frame body (1) through the first connecting plate (2).

3. The anti-galloping device for an electric transmission line of claim 2,

the buffer mechanism (32) is a preformed armor rod, an armor rod or an aluminum armor tape wound outside the power transmission line (5), and the preformed armor rod, the armor rod or the aluminum armor tape has a preset length along the axial direction of the power transmission line (5).

4. The anti-galloping device for the power transmission line of claim 2, wherein the clamping mechanism comprises: a casing (34) and a hoop (31); the sleeve (34) is sleeved outside the buffer mechanism (32), the hoop (31) is sleeved outside the sleeve (34), and the hoop (31) is connected with the frame body (1) through the first connecting plate (2).

5. The anti-galloping device for an electric transmission line of claim 4,

the casing (34) includes: a first housing (341) and a second housing (342); wherein the first shell (341) and the second shell (342) are buckled outside the buffer mechanism (32); the hoop (31) is sleeved on the first shell (341) and the second shell (342), so that the first shell (341) and the second shell (342) clamp the buffer mechanism (32);

the hoop (31) comprises: a bolt (312) and a U-shaped plate (311); two opposite side surfaces of the open end of the U-shaped plate (311) are correspondingly provided with threaded holes; the closed end of the U-shaped plate is sleeved outside the sleeve (34), and threaded holes in two side surfaces of the open end are connected through the bolts (312); the body (311) is further connected with the frame body (1) through the first connecting plate (2).

6. The anti-galloping device for the power transmission line of claim 5, wherein the first shell (341) and the second shell (342) are both semi-circular rings, and the inner diameter of the semi-circular rings is gradually increased from the middle to the two ends.

7. The anti-galloping device for an electric transmission line of claim 2,

an elastic gasket (33) is clamped between the buffer mechanism (32) and the power transmission line (4) and at a position corresponding to the casing (34); and/or

The inner wall of the frame body (1) is also provided with a reinforcing rib (14).

8. The anti-galloping device for the power transmission line of claim 1, wherein the grounding device comprises: a first connecting assembly, an insulator (41) and a second connecting assembly; the first end of the insulator (41) is connected with the spacer through a first connecting body, and the second end of the insulator (41) is connected with the ground through a second connecting body.

9. The anti-galloping device for an electric transmission line of claim 8,

the insulator is a disc insulator;

the first connection assembly includes: a connecting rod (42), a ball head hanging ring (43) and a connecting plate (44); the first end of the connecting rod (42) is connected with the frame body (1), the first end of the ball head hanging ring (43) is connected with the first end of the disc-shaped insulator, and the second end of the connecting rod (42) is connected with the second end of the ball head hanging ring (43) through a connecting plate (44).

10. The anti-galloping device for the power transmission line of claim 8, wherein the second connecting assembly comprises: the socket hanging plate (45), the connecting piece and the pre-twisted strain clamp; the first end of the bowl head hanging plate (45) is connected with the second end of the disc-shaped insulator, the second end of the bowl head hanging plate is connected with the first end of the pre-twisted strain clamp through a connecting piece, and the second end of the pre-twisted strain clamp is used for being connected with the ground.