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Elastic pre-tensioning and composite damping system for preventing and controlling wind deflection and vibration of wire

A technology of conductor wind deflection and compound damping, which is applied in the field of prevention and control of wind load hazards on transmission lines

Active Publication Date: 2012-08-08
STATE GRID ANHUI ELECTRIC POWER CO LTD ANQING POWER SUPPLY CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of vibration has small amplitude and high frequency, which is easy to cause fatigue stress on the weak parts of the wires and the joints, resulting in broken wires and broken strands of the wires, which endanger the safety of line operation.

Method used

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  • Elastic pre-tensioning and composite damping system for preventing and controlling wind deflection and vibration of wire
  • Elastic pre-tensioning and composite damping system for preventing and controlling wind deflection and vibration of wire
  • Elastic pre-tensioning and composite damping system for preventing and controlling wind deflection and vibration of wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] Spring tension contains: the sleeve 41 at one end, its closed end is hinged on the B force arm 2, and there is a spring 42 in the sleeve.The tie rod 43 of the A force arm 1 is passed through the spring, which is the screw 44 in the front section of the trolley 43, and there is a adjustable nut 45 on the screw rod.There is a pad 46, the nuts and pads are set to adjust the pre -tone of the spring in the sleeve.

[0037] The buffer includes: an empty pipe 51 with a hinge of the B force arm one end, with a rubber buffer pad 52 in the empty pipe, and a barrier 53 in an empty pipe near the one end of the B force arm.The base, and the tie rod with 1 force arm 1 hinge 54 passed through the center hole of the buffer pad, which is facing the screw 55 in the section of the base.56; The lever at the other end of the buffer pad is fixed with a flange plate 57.

[0038] Specific implementation, figure 2 The L1 is the state of the pre -tension front wire, and the L2 is the status of the r...

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Abstract

The invention discloses an elastic pre-tensioning and composite damping system for preventing and controlling wind deflection and vibration of a wire. The system comprises rod-like force arms A and B which are hinged with the wires on the two sides of an insulator string of a power transmission line respectively, wherein an air damper, a spring tensioner and a buffer are arranged between the force arm A and the force arm B side by side; and the two ends of the air damper, the spring tensioner and the buffer are hinged with the force arm A and the force arm B respectively. The system can effectively prevent and control the influence on galloping and shock excitation produced by loading an external load of the power transmission line on the wire, meets the requirement of state maintenance and plays a great positive role in maintenance of safe operation of the line, guarantee of power supply reliability and establishment of a strong power grid.

Description

Technical field: [0001] The invention involves an elastic pre -tension and composite damping system for preventing and controlling the air influence and vibration, which is a technical field in the prevention and control of the air load of the control of the transmission line. Background technique: [0002] The transmission line is an important part of the power grid. The lines usually pass the all -geographical environment such as high mountains, canyons, mountain mouths, plains, deserts, rivers, and urban areas. The transmission line also has the test of various types of weather such as wind, snow, fog, and rain.In recent years, the special and harsh climate and the environment is in a high incidence, and the wind disaster is relatively harmful to the line. To this end, the windproof windproof and vibration technology are an important means to ensure the safe operation of the transmission line. [0003] 1 Analysis of the harm and cause of windload on the transmission wire guide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G7/14
Inventor 王振华田新华浦劲松
Owner STATE GRID ANHUI ELECTRIC POWER CO LTD ANQING POWER SUPPLY CO