CN211790662U

CN211790662U - Wind deflection preventing jumper string

Info

Publication number: CN211790662U
Application number: CN202020563385.3U
Authority: CN
Inventors: 罗栋梁; 刘志强; 王昊; 龙晓慧; 邵冬亮; 陈楠; 贾佳; 许利伟; 张晴; 陶汉训; 蒋陶宁; 杨思宁; 亓帅; 王佳鹏
Original assignee: State Nuclear Electric Power Planning Design and Research Institute Co Ltd
Current assignee: State Nuclear Electric Power Planning Design and Research Institute Co Ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-10-27
Anticipated expiration: 2030-04-15

Abstract

The application discloses prevent wind off-set wire jumper cluster relates to transmission of electricity technical field, include: the insulator string is arranged between the jumper wire and the tower, wherein one end of the insulator string is provided with at least one elastic piece, and the other end of the insulator string is suitable for being connected with the jumper wire; one end of the elastic piece is connected with one end of the insulator string, and the other end of the elastic piece is suitable for being connected with the tower. The windage yaw prevention jumper string provided by the embodiment of the application can control the windage yaw angle of the jumper, and can reduce the damage of strong wind to the connection point between the jumper string and the tower.

Description

Wind deflection preventing jumper string

Technical Field

The application relates to the technical field of power transmission, in particular to a wind deflection prevention jumper string.

Background

The transmission is realized by boosting the electric energy generated by the generator by a transformer and then connecting the electric energy to a transmission line through control equipment such as a circuit breaker, and the overhead transmission line is a main way for transmitting the electric energy. Under the action of strong wind, the jumper string in the overhead transmission line generates transverse deflection, so that the electric gap between the live part of the jumper string and the tower is reduced. If the electric clearance can not meet the minimum distance required by the withstand voltage, the electric clearance is punctured, and a jumper windage yaw flashover accident occurs, so that faults such as line tripping and the like are caused.

In the related art, the windage yaw angle of the jumper can be reduced by adopting the cantilever type jumper string. The cantilever type jumper string can fix the connection state between the jumper string and the tower, so that the swing of the jumper string under strong wind is effectively limited, and the electric gap between the jumper string and the tower can be kept stable.

In the course of implementing the present application, the inventors found that the related art has at least the following problems: the cantilever type jumper string needs to be rigidly connected with the tower, and the rigid connection point is easy to damage under the action of strong wind.

Disclosure of Invention

The embodiment of the application provides a prevent wind off-set wire jumper cluster, both can control the wind off-set angle of wire jumper, can reduce the strong wind again and to the destruction of tie point between wire jumper cluster and the shaft tower. The specific technical scheme is as follows:

the embodiment of the application provides a prevent wind off-set wire jumper cluster, includes: an insulator string arranged between the jumper and the tower, wherein,

one end of the insulator string is provided with at least one elastic piece, and the other end of the insulator string is suitable for being connected with the jumper;

one end of the elastic piece is connected with one end of the insulator string, and the other end of the elastic piece is suitable for being connected with the tower.

In an implementation manner of the embodiment of the application, a first bolt is fixedly connected to one end, connected with the tower, of the elastic part, and the first bolt is suitable for being connected with angle steel of the tower.

In an implementation manner of the embodiment of the application, a second bolt is fixedly connected to one end of the elastic element connected with the insulator string;

and a fixing plate is arranged at one end of the insulator string connected with the elastic piece, and the second bolt is connected with the fixing plate.

In an implementation manner of the embodiment of the application, a jumper wire clamp is arranged at one end of the insulator string connected with the jumper wire, and the jumper wire clamp is suitable for clamping the jumper wire.

In an implementation manner of the embodiment of the application, a socket head hanging plate is arranged between the jumper clamp and the insulator string;

the socket head hanging plate comprises a socket head seat connected with the insulator string and a hanging plate connected with the jumper wire clamp.

In an implementation of this application embodiment, the jumper clamp includes along the perpendicular to the clamping part that the axial direction of insulator chain extends, and with the connecting portion that the socket link plate links to each other, the connecting portion perpendicular to the axial setting of clamping part.

In an implementation manner of the embodiment of the application, the connecting portion comprises two connecting plates arranged in parallel, and the hanging plate is fixedly arranged between the two connecting plates.

In an implementation manner of the embodiment of the application, an aluminum tape is arranged on the inner side of the clamping portion and is suitable for wrapping the outer side of the jumper.

In an implementation manner of the embodiment of the application, two elastic pieces are symmetrically arranged on two sides of the insulator string.

In an implementation manner of the embodiment of the application, the insulator string includes a plurality of insulator pieces sequentially arranged along an axial direction.

The beneficial effects of the embodiment of the application at least comprise:

the wind deflection prevention jumper string comprises an insulator string arranged between the jumper string and a tower, wherein one end of the insulator string is provided with at least one elastic piece, the other end of the insulator string is suitable for being connected with the jumper, and the insulator string is used for fixing the electrical distance between the jumper and the tower; one end of the elastic piece is connected with the insulator, the other end of the elastic piece is connected with the pole tower, and the characteristic that the elastic piece can be elastically deformed is utilized, so that the windage yaw angle of the jumper can be controlled, and the damage of strong wind to a connecting point between the jumper string and the pole tower can be reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a windage yaw prevention jumper string provided in an embodiment of the present application;

FIG. 2 is a schematic side view of a portion of the structure of FIG. 1 according to an embodiment of the present disclosure;

fig. 3 is a schematic partial structural view of a connection portion between the elastic member and the insulator string in fig. 1 according to an embodiment of the present disclosure.

The reference numerals denote:

1. an insulator string; 11. an insulator sheet; 2. an elastic member; 3. a first bolt; 31. a first nut; 4. a second bolt; 41. a second nut; 5. a fixing plate; 6. a jumper clamp; 61. a clamping portion; 611. an upper clamping plate; 612. a lower clamping plate; 62. a connecting portion; 621. a connecting plate; 7. a socket hanging plate; 71. a bowl head seat; 711. an opening; 72. hanging the plate; 8. aluminum armor tape; 9. a third bolt; 10. and a fourth bolt.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The embodiment of the application provides a prevent wind off-set wire jumper cluster, as shown in fig. 1, this wire jumper cluster includes: and the insulator string 1 is arranged between the jumper and the tower. Wherein, one end of the insulator string 1 is provided with at least one elastic element 2, and the other end is suitable for being connected with a jumper wire. Fig. 1 shows an example in which only the insulator string 1 is connected to two elastic members 2.

In other embodiments of the present application, one or more than two elastic members 2 may be provided. It will be appreciated that the number of elastic elements 2 may vary, as may the strength of the connection between the insulator string 1 and the tower.

One end of the elastic element 2 is connected with one end of the insulator string 1, and the other end is suitable for being connected with a pole tower, namely the elastic element 2 is connected between the insulator string 1 and the pole tower. In the embodiment of the present application, the elastic member 3 may be provided as a spring. In other embodiments of the present application, the elastic member 3 may be made of other elastic materials such as rubber.

Under the action of wind load, when the jumper string swings and generates lateral deflection, the elasticity of the elastic part 2 needs to be overcome, so that the elastic part 2 can limit the wind deflection angle of the jumper. Meanwhile, when the jumper string is transversely inclined relative to the tower, the elastic part 2 can unload the acting force of the wind load on the connecting point between the jumper string and the tower, so that the damage of strong wind on the connecting point between the jumper string and the tower is reduced. When the wind load disappears, the elastic element 2 drives the insulator string 1 to return to the original position so as to maintain the electrical distance between the jumper and the tower.

According to the use condition of the wind deflection prevention jumper string, elastic pieces with different elastic moduli can be selected. For example, when the wind deflection prevention jumper string is applied to a ground with a large wind load, an elastic piece with high rigidity can be selected, so that the limitation on the wind deflection angle of the jumper is enhanced. Correspondingly, when the wind deflection preventing jumper string is applied to a region with a small wind load, an elastic piece with low rigidity can be selected.

The wind deflection prevention jumper string comprises an insulator string arranged between the jumper string and a tower, wherein one end of the insulator string is provided with at least one elastic piece, the other end of the insulator string is suitable for being connected with the jumper, and the insulator string is used for fixing the electrical distance between the jumper and the tower; one end of the elastic piece is connected with the insulator, the other end of the elastic piece is connected with the pole tower, and the characteristic that the elastic piece can be elastically deformed is utilized, so that the windage yaw angle of the jumper can be limited, and the damage of strong wind to a connecting point between the jumper string and the pole tower can be reduced.

The jumper wire is a conductive device connected with the wire strain clamp on two sides of the strain tower, and the jumper wire string is suspended between the jumper wire and the tower and used for increasing the electrical distance between the jumper wire and the tower. That is, in the embodiment of the present application, the axial direction of the insulator 1 may be set to be a vertical direction.

As shown in fig. 1, the insulator string 1 may include a plurality of insulator pieces 11 arranged in order in the axial direction. It can be understood that the insulator string 1 has different numbers of insulator sheets 11, and the insulator string 11 has different lengths along the axial direction, so that the electrical distance between the jumper and the tower can be adjusted by setting the number of the insulator sheets 11.

In some embodiments of the application, the wind deflection angle of the jumper wire can be further limited by additionally arranging the weight piece to increase the vertical load of the jumper wire or by adopting a V-shaped insulator string. The V-shaped insulator string is two V-shaped insulator strings with the lower end hanging with a lead and the upper end hanging with a tower.

In the embodiment of the present application, as shown in fig. 1 and 3, a first bolt 3 may be fixedly connected to one end of the elastic member 2 connected to the tower, and the first bolt 3 is adapted to be connected to an angle iron (not shown) of the tower.

For example, the angle steel of the tower can comprise a first connecting plate arranged horizontally and a second connecting plate arranged vertically. The first connecting plate and the second connecting plate are mutually connected and vertical. The first end of the first bolt 3 can be fixedly connected with the elastic element 2, and the second end can vertically penetrate through the horizontally arranged first connecting plate and is fixed with a first nut 31.

Or, a first end of the first bolt 3 may be fixedly connected to the elastic member 2, a second end thereof may be provided with a first through hole (not shown), and a fifth bolt (not shown) passes through the first through hole to be fixedly connected to the second connecting plate vertically disposed.

In the embodiment of the present application, as shown in fig. 1 and 3, a second bolt 4 may be fixedly connected to one end of the elastic element 2 connected to the insulator string 1. One end of the insulator string 1 connected with the elastic element 2 can be provided with a fixing plate 5, and the second bolt 4 can be connected with the fixing plate 5. Specifically, the first end of the second bolt 4 may be fixedly connected to the elastic member 2, and the second end may vertically penetrate through the horizontally disposed fixing plate 5 and is fixed with the second nut 41.

Under the action of wind load, when the jumper string swings and generates transverse deflection, the length of the elastic part 1 is changed, and therefore the elastic part 1 generates elastic resistance, and the wind deflection angle of the jumper string can be effectively limited. Meanwhile, when the jumper string is transversely inclined relative to the tower, the connection structure between the elastic piece 2 and the tower and the connection structure between the elastic piece 2 and the insulator string 1 can be kept stable, so that the service life of the jumper string is effectively prolonged, and the reliability of the operation of the power transmission line is effectively improved.

The utility model provides a prevent wind inclined to one side wire jumper cluster, can be applicable to the less strain insulator tower of tower head size, and then increased strain insulator tower's application scope, and simple structure easily installs, can practice thrift the engineering investment.

In the embodiment of the present application, as shown in fig. 1 and 3, two elastic members 2 may be symmetrically disposed on both sides of an insulator string 1. Specifically, the elastic members 2 may be arranged side by side, and the axial direction of the elastic members 2 may be parallel to the axial direction of the insulator 1. The two elastic elements 2 can be symmetrically distributed along the central axis of the insulator string 1.

In other embodiments of the present application, the insulator string may further be connected with three elastic members arranged in parallel, one of the elastic members is disposed on a central axis of the insulator string, and the other two elastic members may be symmetrically distributed along the central axis of the insulator string.

In the embodiment of the application, as shown in fig. 1, a jumper clamp 6 may be disposed at one end of the insulator string 1 connected to the jumper. A socket head hanging plate 7 can be arranged between the jumper clamp 6 and the insulator string 1.

Specifically, as shown in fig. 2, the socket clevis 7 may include a socket base 71 connected to the insulator string 1 and a clevis 72 connected to the jumper clamp 6. In some embodiments of the present application, the bowl head seat 71 may be a sphere or a cube, and the hanging plate 72 may be a plate-like structure. The hanging plate 72 may extend away from the bowl base 71. The bowl head seat 71 and the hanging plate 72 can be fixedly connected through bolts, or the bowl head seat 71 and the hanging plate 72 can be of an integrally formed structure.

An opening 711 may be formed at the bowl head seat 71, and correspondingly, an insertion part (not shown) may be formed at one end of the insulator string 1 connected to the bowl head hanging plate 7. The shape of the insertion part may be the same as or similar to that of the opening 711 so that the insertion part may be inserted into the opening 711 and fixed.

As shown in fig. 2, the opening 711 may be configured to be narrow at the top and wide at the bottom, and the opening 711 may extend toward the interior of the bowl head seat 71 to form a cavity. The insertion part of the insulator string 1 can enter the interior of the bowl head seat 71 from the opening 711 and is clamped in the cavity.

In the embodiment of the present application, as shown in fig. 1 and 2, the jumper clamp 6 may include a clamping portion 61 and a connecting portion 62 connected to each other. The clamping portion 61 can extend in the axial direction perpendicular to the insulator string 1, and the connecting portion 62 can be connected with the socket clevis 7. The connecting portion 62 may be disposed perpendicular to the axial direction of the clamping portion 61.

Specifically, the connecting portion 62 may include two connecting plates 621 arranged in parallel, and the hanging plate 72 may be fixedly disposed between the two connecting plates 621. The hanging plate 72 and the connecting portion 62 are connected to each other at one end, and the two connecting plates 621 are correspondingly provided with a second through hole (not shown in the figure, and the actual position coincides with the third bolt 9), and the third bolt 9 can fixedly connect the hanging plate 72 and the connecting portion 62 through the second through hole.

In the embodiment of the present application, as shown in fig. 2, the clamping portion 61 may include an upper clamping plate 611 and a lower clamping plate 612. The upper clamping plate 611 and the lower clamping plate 612 can be fixedly connected through a fourth bolt 10. For example, the fifth bolts 10 may be provided in two, and may be symmetrically distributed along the central axis of the insulator string 1.

The jumper clamp 6 may be used to clamp a jumper, which passes through the clamping portion 61 of the jumper clamp 6. Specifically, each of the upper and

lower clamping plates

611 and 612 may include an arc-shaped section, and the recessed directions of the upper and

lower clamping plates

611 and 612 are directed away from each other, so that the jumper wire may pass through the clamping portion 61.

In the embodiment of the present application, the inner side of the clamping portion 61 may be provided with an aluminum tape 8, and the aluminum tape 8 is suitable for covering the outer side of the jumper. In some embodiments of the present application, the length of the aluminum straps 8 may be greater than the length of the clamping portion 61 extending in a direction perpendicular to the axial direction of the insulator string 1. I.e. the aluminium armour tape 8 may extend outside the clamping portion 61.

The prevent wind inclined to one side wire jumper cluster that this application embodiment provided is applicable in the two split conductor strain insulator towers in strong wind area, and single loop tower or two loop tower are all suitable. Wherein, the single loop is a loop with a load provided with a power supply; the double-loop refers to a loop with two power supplies for one load.

By adopting the wind deflection prevention jumper string provided by the embodiment of the application, the range of application of the altitude difference of a common strain tower can be increased by 30-40%, and the electric clearance between the jumper and the tower can be increased by more than 20%.

Compared with the conventional jumper string, the weight of the tension tower can be reduced by about 5% by adopting the windproof biased jumper string in a mountainous area where strong wind is easy to occur. Taking a 220kV double-loop iron tower as an example, the weight of the tower can be reduced by 1 ton.

In the present application, it is to be understood that the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

The above description is only exemplary of the present application and should not be construed as limiting the scope of the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. The utility model provides a prevent wind off-set wire jumper cluster which characterized in that includes: an insulator string (1) arranged between the jumper and the tower, wherein,

one end of the insulator string (1) is provided with at least one elastic piece (2), and the other end of the insulator string is suitable for being connected with the jumper;

one end of the elastic piece (2) is connected with one end of the insulator string (1), and the other end of the elastic piece is suitable for being connected with the tower.

2. The wind-deflection-preventing jumper string according to claim 1, wherein a first bolt (3) is fixedly connected to one end of the elastic member (2) connected with the tower, and the first bolt (3) is suitable for being connected with an angle steel of the tower.

3. The wind-deflection-prevention jumper string according to claim 1, wherein a second bolt (4) is fixedly connected to one end of the elastic piece (2) connected with the insulator string (1);

and one end of the insulator string (1) connected with the elastic piece (2) is provided with a fixing plate (5), and the second bolt (4) is connected with the fixing plate (5).

4. The wind deflection prevention jumper string according to claim 1, wherein one end of the insulator string (1) connected with the jumper is provided with a jumper clamp (6), and the jumper clamp (6) is suitable for clamping the jumper.

5. The wind deflection prevention jumper string according to claim 4, wherein a socket hanging plate (7) is arranged between the jumper clamp (6) and the insulator string (1);

the socket head hanging plate (7) comprises a socket head seat (71) connected with the insulator string (1) and a hanging plate (72) connected with the jumper clamp (6).

6. The windage-yaw-proof jumper string according to claim 5, characterized in that the jumper clamp (6) comprises a clamping portion (61) extending in an axial direction perpendicular to the insulator string (1), and a connecting portion (62) connected to the socket plate (7), the connecting portion (62) being arranged perpendicular to the axial direction of the clamping portion (61).

7. The windage-yaw-prevention jumper string according to claim 6, wherein the connecting portion (62) comprises two connecting plates (621) arranged in parallel, and the hanging plate (72) is fixedly arranged between the two connecting plates (621).

8. The windage-yaw-proof jumper string according to claim 6, wherein an aluminum tape (8) is arranged on the inner side of the clamping portion (61), and the aluminum tape (8) is adapted to cover the outer side of the jumper.

9. The wind-deflection-prevention jumper string according to claim 1, wherein two elastic pieces (2) are symmetrically arranged on two sides of the insulator string (1).

10. The windage-yaw-proof jumper string according to claim 1, characterized in that the insulator string (1) comprises a plurality of insulator sheets (11) arranged in sequence in the axial direction.