A kind of restraining type transmission line wind deflection energy consumption device

Abstract

The present invention discloses a restraining type transmission line wind deflection protection energy dissipation device, comprising a pull-down insulator string, a wire group, a fixed pulley and a control box. The upper end of the pull-down insulator string is connected to the suspension insulator string, and the lower end is connected to the wire group; the wire group is two parallel wires that bypass the fixed pulley and extend into the control box. A cross bar is fixed inside the control box, and two turntables are arranged on the cross bar at intervals, and the turntables are connected by circumferentially arranged damping wires; the cross bar is provided with threads on the section close to the outside of the two turntables; the upper and lower ends of the turntable are provided with two openings, and the two parallel wires extending into the control box are separately spirally wound on the cross bar, and respectively pass through the upper and lower end openings of the turntable and are fixed to the turntable via anchors. The present invention realizes omnidirectional control of the wind deflection of the transmission line with the help of a fixed pulley, and can achieve a good control effect regardless of the direction of wind deflection.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power construction, and in particular relates to a wind-proof energy consumption device for a restraining transmission line. Background Art

[0002] In recent years, frequent catastrophic weather events have posed a significant challenge to the safe and stable operation of power transmission lines. In areas with strong winds, transmission lines are particularly susceptible to deflection under wind loads, causing wind-induced flashovers and severely impacting the safety and stability of transmission lines. Therefore, to ensure the safety and stability of transmission lines, appropriate measures are needed to effectively prevent wind-induced flashovers.

[0003] To address the susceptibility of transmission line flashover accidents caused by wind deflection, relevant researchers and technicians have proposed a number of wind deflection mitigation measures, such as attaching weights to the lower ends of insulator strings, installing guy wires, changing the insulator string type, and even changing the tower type. While these measures can achieve a certain degree of wind deflection mitigation, they also have many shortcomings. Replacing insulator strings or even changing tower types is expensive and difficult to implement, while installing guy wires and suspending weights have limited applicability and may impose unbalanced forces on the transmission line itself, adversely affecting the tower. Therefore, faced with complex and variable multi-directional currents, there is an urgent need for comprehensive, highly efficient wind deflection mitigation devices to address the shortcomings of existing measures. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a restraining type transmission line wind deviation prevention and energy consumption device, which can realize the coordinated prevention and control of wind deviation between the same-phase transmission lines, ensuring their safety and stability in windy weather.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] An embodiment of the present invention provides a restraining-type transmission line wind-induced energy dissipation device, wherein a cross bar is fixed in the control box, and two threaded segments with the same rotation direction are provided on the cross bar, and the two threaded segments each mesh to transmit a turntable, and the turntables are connected by a damping line, and each turntable is also connected to a wire clamp via two separate pull wires spirally wound on the cross bar, and the pull wires pass around fixed pulleys located on both sides of the control box, and the wire clamp is connected to the lower end of the pull-down insulator string, and the upper end of the pull-down insulator string is connected to the suspension insulator string via a hanging ring; the anchoring forms of the pull wires on the two turntables are opposite, so that the two turntables are subjected to torques in opposite directions and rotate relative to each other.

[0007] As a further technical solution, the pull-down insulator string, the guy wire group and the suspension insulator string of the transmission tower are initially on a vertical line.

[0008] As a further technical solution, the turntable has a certain thickness, a central opening and an inner ring provided with threads, which engage with the threaded section of the transmission connecting crossbar.

[0009] As a further technical solution, both ends of the crossbar are fixed to the left and right walls of the box body and cannot undergo translational movement or rotation.

[0010] As a further technical solution, a plurality of limiting rings are provided on the helical winding section of the pull wire of the cross bar to fix the winding track of the pull wire on the cross bar.

[0011] As a further technical solution, the damping wire is arranged parallel to the cross bar, and its end is fixed to the outside of the turntable by an anchor. Preferably, a high-strength, high-rebound TPU material is selected.

[0012] As a further technical solution, the wire clamp limits the relative rotation between the pull-down insulator string and the guy wire group, and the two move synchronously when the wind deflects.

[0013] As a further technical solution, the pull wire group is made of inelastic material and has no margin for initial tension; the two pull wires are separately wound around the cross bar inside the box and are arranged side by side outside the box via a limiting ring.

[0014] As a further technical solution, the two pulling wires are respectively passed through the openings at the upper and lower ends of the turntable from the front and rear of the crossbar and anchored, so that the turntable is subjected to the torque of the two pulling wires.

[0015] As a further technical solution, the anchoring forms of the pull wires on the left and right turntables are opposite, so that the two turntables are subjected to torques in opposite directions and rotate relative to each other.

[0016] As a further technical solution, the direction of the thread on the crossbar is outward along the rotation direction of the turntable, so that the left and right turntables move to the left and right respectively when they rotate relative to each other, and the distance gradually increases.

[0017] The beneficial effects of the above embodiments of the present invention are as follows:

[0018] (1) The present invention can achieve coordinated anti-wind deflection control of the same-phase transmission lines of the transmission lines. Specifically, under the action of horizontal wind loads, the transmission conductors will produce vertical line direction deviations. No matter in which direction the conductors deviate, the left and right pull wires will be subjected to tension. The tension of the pull wires drives the left and right turntables to rotate relative to each other, causing the parallel damping wires to twist and elastically deform, consuming energy to achieve the purpose of preventing wind deflection. At the same time, the elastic restoring force of the damping wire after being stretched exerts a torque on the turntable. The rotation of the turntable drives the pull wire to reset, and the device returns to its initial working state. Therefore, the present invention can achieve coordinated anti-wind deflection control of the same-phase transmission lines and be used for anti-wind deflection control of transmission lines.

[0019] (2) The present invention realizes omnidirectional control of the wind deviation of the transmission line with the help of a fixed pulley, and can achieve a good control effect regardless of the direction of the wind deviation.

[0020] (3) The present invention realizes the coordinated control of wind deviation between the same-phase transmission lines, improves the control efficiency of wind deviation, and has significant effects.

[0021] (4) The present invention is easy to install and does not damage the transmission tower itself. It does not add unbalanced force to the transmission tower during operation, and can automatically return to its original position after the operation is completed.

[0022] (5) The present invention is light in weight, simple in structure, does not require external energy input, can effectively prevent wind deviation control, and has good economy and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Figure 1 is a schematic diagram of the overall installation of a wind deflection prevention device on a transmission line according to one or more embodiments of the present invention;

[0025] Figure 2 is a schematic diagram of the overall structure of a wind deflection prevention device according to one or more embodiments of the present invention;

[0026] Figure 3 This invention Figure 2 Schematic diagram of the interior of the box;

[0027] Figure 4 This invention Figure 3 An enlarged schematic diagram of the detailed structure in FIG;

[0028] Figure 5 It is a schematic diagram of the positions of the insulator string and the guy wire in the static and wind-deflected state of the present invention.

[0029] In the figure: the distances or sizes between parts are exaggerated to show the positions of the parts, and the diagram is for illustration only;

[0030] Among them, 1 fixed pulley, 2 control box, 3 wire pulling group, 4 pad, 5 wire clamp, 6 pull-down insulator string, 7 hanging ring, 8 cross bar, 9 turntable, 10 damping wire, 11 split wire, 12 anchor, 13 limit ring, 14 thread. DETAILED DESCRIPTION

[0031] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise clearly indicated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprising" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations;

[0033] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0034] Terminology explanation section: If the terms "install", "connect", "connect", "fixed", etc. appear in the present invention, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection, a direct connection, or an indirect connection through an intermediate medium, an internal connection between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0035] As described in the background art, there are currently few devices for controlling wind deviation of power transmission lines, and their efficiency and forms are limited. In order to solve the above technical problems, the present invention proposes a restraining type power transmission line wind deviation prevention energy dissipation device.

[0036] In a typical embodiment of the present invention, Figure 1 As shown in the figure, a restraining type transmission line anti-wind deflection energy dissipation device is proposed, which can control the wind deflection of the transmission line in all directions, realize the coordinated control of wind deflection between the same-phase transmission lines, improve the control efficiency of wind deflection, and has a significant effect.

[0037] The following describes the implementation method in detail in combination with the technical solution and the accompanying drawings.

[0038] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, the wind deflection prevention device includes two pull-down insulator strings 6, two guy wire groups 3, two fixed pulleys 1 and a control box 2. The wind deflection prevention device as a whole has a bilaterally symmetrical structure; the two fixed pulleys 1 are placed on the left and right cross arms of the transmission tower with the help of pads 4, and the two fixed pulleys 1 are located on both sides of the control box 2, and the control box 2 is connected to the pull-down insulator strings 6 through the guy wire group 3 that bypasses the fixed pulleys 1.

[0039] Furthermore, the control box 2 is a rectangular parallelepiped box, which is placed on the transverse partition of the transmission tower with the aid of a pad 4 .

[0040] Furthermore, the upper end of each pull-down insulator string 6 is connected to the suspension insulator string through a hanging ring 7, and the lower end is connected to the guy wire group 3 through a wire clamp 5. The wire clamp 5 limits the relative rotation between the pull-down insulator string 6 and the guy wire group 3, and the two move synchronously when the wind deflects.

[0041] Furthermore, the above-mentioned cable group 3 is two parallel cables 11, which pass around the fixed pulley 1 and extend into the interior of the control box 2. The cable group is made of inelastic material and is initially tightened without any excess.

[0042] Further, such as Figure 3 As shown, the control box 2 is internally provided with a crossbar 8, with its ends fixed to the left and right side walls. Two turntables 9 are strung across the crossbar 8 at intervals, connected by circumferentially parallel damping wires 10. The turntables 9 have openings at their upper and lower ends. Two split cables 11, extending into the control box 2, are separately spirally wound around the crossbar 8 and passed through the upper and lower openings of the turntables, respectively, to be secured to the turntables via anchors 12. The crossbar 8 is threaded in the section near the outsides of the two turntables 9. The cables are anchored in opposite ways on the left and right turntables 9, causing them to rotate relative to each other under the action of opposite torques.

[0043] In the present invention, the definition of inner side and outer side is: relative to the turntable structure, the side close to the center of the control box is the inner side, and the side close to the outer wall of the box is the outer side.

[0044] Specifically, the pull-down insulator string 6, the guy wire group 3 and the suspension insulator string of the transmission tower are initially on a vertical line.

[0045] Furthermore, the turntable 9 has a certain thickness, a central opening and an inner ring provided with threads, which engage with the threaded section of the transmission connecting crossbar 8.

[0046] Furthermore, the ends of the crossbar 8 are fixed to the left and right walls of the control box 2 and cannot move in translation or rotation. A plurality of limiting rings 13 are provided on the wire spiral winding section of the crossbar 8 so that the split wire 11 is wound along the fixed track on the crossbar.

[0047] Specifically, the two split pull wires 11 are separately wound around the cross bar 8 when inside the control box 2, and are arranged side by side through the limit ring 13 when outside the box. The two split pull wires 11 are respectively inserted into the upper and lower holes of the turntable 9 from the front and rear of the cross bar 8 (that is, one pull wire is inserted into the hole from the front of the cross bar, and the other pull wire is inserted into another hole from the rear of the cross bar. The purpose of this design is to allow the turntable to be subjected to a torque); the opening at the lower end is fixed by an anchor 12, so that the turntable is subjected to the torque of the two pull wires. Specifically, the anchoring connection forms of the pull wires on the left and right turntables 9 are opposite, so that the two turntables are subjected to torques in opposite directions to cause relative rotation.

[0048] Furthermore, the two sections of threads 14 on the crossbar 8 have the same rotation direction and are arranged outward along the rotation direction of the turntable, so that the left and right turntables move to the left and right respectively when they rotate relative to each other, and the distance gradually increases.

[0049] Furthermore, the damping wire 10 is arranged parallel to the crossbar 8, and its end is fixed to the outside of the turntable by an anchor 12. In a preferred embodiment, the damping wire is made of high-strength, high-rebound TPU material.

[0050] The wind deflection prevention device of the present invention should strictly follow the construction sequence during on-site construction. Figure 1 As shown, for a transmission line requiring windage control, first, the lower end of the suspension insulator string is connected to the pull-down insulator string 6 via a hanging ring 7. Simultaneously, a control box 2 is placed on the transmission tower's transverse diaphragm, and a fixed pulley 1 is placed on each of the tower's left and right crossarms, with the fixed pulleys and control box at the same height. A turntable 9 within the control box is pre-positioned at the innermost edge of the thread 14, connected by parallel damping wires 10. Preselected split guy wires 11 are anchored to the turntable 9, then spirally wound around the crossbar 8 and extended from the box wall. The split guy wires are then aligned via a retaining ring 13 to form a guy wire assembly 3, which is then passed around the fixed pulley 1 and connected to the pull-down insulator string 6 via a wire clamp 5. The initial state of the control device is: the pull-down insulator string, guy wire assembly, and fixed pulley are aligned vertically, the guy wire assembly is taut, and the damping wire is free of twist.

[0051] The specific working process of the wind deflection prevention device of the present invention is as follows:

[0052] like Figure 5 As shown, under horizontal wind loads, the transmission line will deflect vertically. Regardless of the direction of the conductor deflection, the left and right guy wires 3 are subjected to tension. This tension drives the left and right turntables 9 to rotate relative to each other, causing the parallel damping wires 10 to twist and elastically deform, consuming energy to prevent wind deflection. Simultaneously, the elastic restoring force of the stretched damping wires imparts a torque to the turntable 9, causing the turntable's rotation to reset the guy wires, returning the device to its initial operating state.

[0053] The wind deflection prevention device of the present invention achieves coordinated wind deflection control between same-phase transmission lines, suppressing wind deflection of transmission lines in all directions with significant effectiveness. Furthermore, the device is lightweight, simple in structure, and easy to install and replace, thus possessing promising application prospects.

[0054] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A device for preventing wind-induced energy loss in a transmission line, characterized in that: It includes a pull-down insulator string, guy wire, fixed pulley and control box; A crossbar is fixed in the control box, and two threaded segments with the same rotation direction are provided on the crossbar. The two threaded segments respectively mesh to drive a turntable. The turntables are connected by a damping wire, and each turntable is also connected to a wire clamp by two pull wires spirally wound on the crossbar. The two pull wires subject the turntable to torque, and the pull wires pass around fixed pulleys on both sides of the control box. The wire clamp is connected to the lower end of the pull-down insulator string, and the upper end of the pull-down insulator string is connected to the suspension insulator string via a hanging ring. The anchoring forms of the pull wires on the two turntables are opposite, so that the two turntables are subjected to torques in opposite directions and rotate relative to each other. The upper and lower ends of the turntable are provided with two openings, and the two parallel cables extending into the control box are separately spirally wound on the crossbar and respectively passed through the upper and lower openings of the turntable and fixed to the turntable through anchors; The two pulling wires are respectively passed through the openings at the upper and lower ends of the turntable from the front and rear of the crossbar and are anchored, so that the turntable is subjected to the torque of the two pulling wires.

2. The device for preventing wind-induced energy loss in a transmission line according to claim 1, wherein: The fixed pulley is placed on the left and right cross arms of the transmission tower with the help of pads.

3. The device for preventing wind-induced energy loss in power transmission lines according to claim 1, wherein: The pull-down insulator string, the guy wire group and the suspension insulator string of the transmission tower are initially on a vertical line.

4. The device for preventing wind-induced energy loss in a transmission line according to claim 1, wherein: The two ends of the crossbar are fixed to the left and right walls of the box body and cannot undergo translational movement or rotation.

5. The device for preventing wind-induced energy loss in a transmission line according to claim 1, wherein: A plurality of limiting rings are provided on the helical winding section of the pull wire of the cross bar to fix the winding track of the pull wire on the cross bar.

6. The device for preventing wind-induced energy loss in a pinned-down transmission line according to claim 1, wherein: The damping line is arranged in parallel with the cross bar, and the end portion thereof is fixed to the outer side of the turntable by an anchor.

7. The device for preventing wind-induced energy loss in a transmission line according to claim 1, wherein: The pull wire group is made of inelastic material and is initially tightened without any excess. Two pull wires are separately wound around the cross bar inside the control box and are arranged side by side outside the control box via a limiting ring.

8. The device for preventing wind-induced energy loss in a pinned-down transmission line according to claim 1, wherein: The direction of the thread on the crossbar is outward along the rotation direction of the turntable, so that the two turntables move to the left and right respectively when they rotate relative to each other, and the distance between them gradually increases.

Images