CN106655050A - Swinging preventing 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 first connecting component, a composite insulator, a second connecting component, and two spacer rods for connecting with a power transmission line. Wherein, the two spacers are connected through a connecting rod; the first end of the composite insulator is connected with the connecting rod through the first connecting component; the second end of the composite insulator is connected with the ground through the second connecting component. The present invention connects the spacer rods to the ground through the first connection component, the second connection component and the composite insulator, 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 , which improves the stability of the transmission line. In addition, the arrangement of the insulator isolates the spacer 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.

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.

The present invention proposes an anti-galling device for a power transmission line, which includes: a connecting rod, a first connection assembly, a composite insulator, a second connection assembly, and two spacers for connecting with a transmission line; wherein, the two The spacer rods are connected through a connecting rod; the first end of the composite insulator is connected with the connecting rod through a first connecting component; the second end of the composite insulator is connected with the ground through a second connecting component.

Further, in the above-mentioned anti-galling device for power transmission lines, each of the spacer rods includes: a frame, at least two connecting plates and wire clamps; wherein, the wire clamps 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 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 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 board 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, 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 at a position corresponding to the casing.

Further, in the above-mentioned anti-galling device for power transmission lines, the first connection assembly includes: a connecting rod connecting plate; wherein, the first end of the connecting rod is connected to the frame, and the second end of the connecting rod passes through The connection plate is connected to the first end of the composite insulator.

Further, in the above-mentioned anti-galling device for transmission lines, the second connection assembly includes: a connector and a pre-twisted strain clamp; wherein, the first end of the connector is connected to the second end of the composite insulator, and the second end of the composite insulator is connected to The second end of the piece is connected to the first end of the pre-twisted tension clamp, and the second end of the pre-twisted tension clamp is used to connect to the ground.

Compared with the way in which the spacer rods are suspended in the air in the prior art, the present invention connects the spacer rods with the ground through the first connection assembly, the second connection assembly and the composite insulator, and then exerts a downward pulling force on the spacer rods, so as to The stability of the spacer is increased, thereby enhancing the anti-galling effect of the transmission line and improving the stability of the transmission line. In addition, in the present invention, an insulator is provided in the grounding device, the first connection component connects the insulator to the spacer bar, and the second connection component connects the insulator to the ground. The setting of the insulator isolates the spacer rod from the ground, prevents it from being broken down and forms a loop with the ground, and improves the safety of the anti-flapping device.

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 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;

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;

Fig. 10 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 , the figure shows a preferred structure of an anti-swinging device for transmission lines provided by an embodiment of the present invention. As shown in the figure, the device includes: a first connecting rod 4 , a first connecting component 5 , a composite insulator 6 , a second connecting component 7 , and two spacer bars A for connecting with a power transmission line. Wherein, two spacer rods A are connected by connecting rod 4; The first end (upper end shown in Figure 1) of composite insulator 6 is connected with connecting rod 4 by first connecting assembly 5; The second end of composite insulator 6 ( The lower end shown in FIG. 2 ) is connected to the ground through the second connection assembly 7 .

During specific implementation, the spacer A may be a common spacer well known to those skilled in the art. The function of the first connection assembly, the second connection assembly and the composite insulator 6 is to connect the spacer bar A to the ground, so as to apply tension to the spacer bar A and increase the stability of the spacer bar A. In practice, the first connection assembly 5 There are various structural forms of the connection assembly 7 and the second connection assembly 7, which are not limited in this embodiment.

It can be seen that, compared with the way in which the spacer rods are suspended in the air in the prior art, the present embodiment connects the spacer rods A to the ground through the first connection assembly, the second connection assembly and the composite insulator 6, and then the spacer rods A exerts a downward pulling force 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, a composite insulator 6 is set in the grounding device 2, and the setting 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-galling device sex.

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 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 8 , 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 connecting plate 2 . The function of the buffer mechanism 32 is to wrap around the outside of the transmission line 8 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 8 .

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 8. Since the buffer mechanism 32 has an energy-absorbing effect, the abrasion of the clamping mechanism to the transmission line 8 is greatly reduced; when the transmission line 8 is subjected to When pulling downward, the buffer mechanism 32 can also reduce the local stress of the transmission line 8 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 8, the pre-twisted wire also has a certain holding force on the transmission line 8, 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 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 a pre-twisted wire wound around the outside of the transmission line 8 .

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 connecting plate 2 may be a right-angle hanging plate. Specifically, one end of the connecting plate (the lower end shown in FIGS. 6 and 7 ) is sandwiched between the two sides of the open end of the U-shaped plate, and the connecting plate 2 is also provided with a bolt hole, 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 (upper end shown in Fig. 6, Fig. 7) of connecting plate 2 is provided with draw-in groove 21, and frame body 1 is snapped in draw-in groove 21, and, connecting plate 2 and frame body 1 correspond to draw-in groove 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. 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 8, 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 8, thereby reducing the pressure applied by the hoop 31 on the power line 8, and reducing the impact of the hoop 31 on the transmission line 8. Abrasion and localized stresses on transmission lines 8. 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 8 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 strap and the hoop 31, which can further buffer the pressure of the hoop 31 on the transmission line 8, and further reduce the pressure on the transmission line. 8 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 8, the pre-twisted wire 32 wound on the outside of the elastic gasket 33 will be in a diffuse shape that is thin in the middle and thick on 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 .

In the above embodiments, the first connecting assembly 5 may include: a second connecting rod 51 and a connecting plate 52 . Wherein, the first end (the upper end shown in FIG. 1 ) of the second connecting rod 51 is connected to the frame body 1, and the second end (the lower end shown in FIG. 1 ) of the second connecting rod 51 is connected to the composite insulator through the connecting plate 52 6 first end (the upper end shown in Figure 1) is connected. During specific implementation, the first end of the second connecting rod 51 may also be connected to the frame body 1 through a U-shaped ring 53 . The closed end of the U-shaped ring 13 is bolted to the frame body 1, and the first end of the second connecting rod 51 is inserted into the open end of the U-shaped ring 53, and the open end of the U-shaped ring 53 is connected to the second connecting rod by bolts. 51 are connected.

During specific implementation, the second end of the second connecting rod 51 can be bolted to the first end (the upper end shown in FIG. 1 ) of the connecting plate 52, the second end of the connecting plate 52 is provided with a slot, and the first One end is plugged into the slot and connected to the second end of the connecting plate 52 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.

Continuing to refer to FIG. 1 , the second connecting assembly 7 may include: a connecting piece and a pre-twisted strain clamp 71 . Wherein, the first end of the connecting piece is connected with the second end (the lower end shown in FIG. 1 ) of the composite insulator 6, and the second end of the connecting piece passes through the first end of the pre-twisted strain clamp 71 (shown in FIG. 1 ). The upper end shown in FIG. 1 ) is connected, and the second end (lower end shown in FIG. 1 ) of the pre-twisted strain clamp 71 is used to connect to the ground.

During specific implementation, the connector may include a U-shaped hanging ring 72 and a PD hanging plate 73, wherein the open end of the U-shaped hanging ring 22 is connected to the second end of the composite insulator 6 through bolts, and the closed end of the U-shaped hanging ring 72 It is connected to the pre-twisted tension clamp 71 through the PD hanging plate.

In this embodiment, the spacer is connected to the ground through the first connection component, the second connection component and the composite insulator, and then a downward pulling force is applied to the spacer to increase the stability of the spacer, thereby enhancing the anti-galling of the transmission line The effect is to improve the stability of the transmission line. In addition, in this embodiment, an insulator is provided in the grounding device, the first connecting component connects the insulator to the spacer bar, and the second connecting component connects the insulator to the ground. The setting of the insulator isolates the spacer rod from the ground, prevents it from being broken down and forms a loop with the ground, and improves the safety of the anti-flapping device.

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. Anti-galloping device for power transmission line, its characterized in that includes: the device comprises a first connecting rod (4), a first connecting assembly (5), a composite insulator (6), a second connecting assembly (7) and two spacing rods for connecting with a power transmission line; wherein,

the two spacing rods are connected through a connecting rod;

the first end of the composite insulator (6) is connected with the first connecting rod (4) through a first connecting component (5);

and the second end of the composite insulator (6) is connected with the ground through a second connecting component (7).

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 connecting plates (2) and a cable clamp (3); wherein,

the wire clamps (3) are arranged in one-to-one correspondence with the 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 (8), the clamping mechanism is sleeved outside the buffer mechanism (32), and the clamping mechanism is further connected with the frame body (1) through the 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 (8), 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 (8).

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 shell (34) is sleeved outside the buffer mechanism (32), the hoop (31) is sleeved outside the shell (34), and the hoop (31) is connected with the frame body (1) through the 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 U-shaped plate (311) is further connected with the frame body (1) through the 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 (8) and at a position corresponding to the casing (34).

8. The anti-galloping device for the power transmission line of claim 2, wherein the spacer further comprises: a reinforcing rib (11); the reinforcing ribs (11) are connected to the inner wall of the frame body (1).

9. The anti-galloping device for the power transmission line of claim 1, wherein the first connecting component comprises: the connecting rod (41) is connected with the connecting plate (42); the first end of the connecting rod (41) is connected with the frame body (11), and the second end of the connecting rod (41) is connected with the first end of the composite insulator (2) through the connecting plate (42).

10. The anti-galloping device for the power transmission line of claim 1, wherein the second connecting assembly comprises: a connecting piece and a pre-twisted strain clamp (21); the first end of the connecting piece is connected with the second end of the composite insulator (2), the second end of the connecting piece is connected with the first end of the pre-twisted strain clamp (21), and the second end of the pre-twisted strain clamp (21) is used for being connected with the ground.