A spring shock-absorbing type phase-to-phase anti-galling spacer

An interphase spacer and anti-galling technology, which is applied in the direction of mechanical vibration attenuation devices, devices for maintaining the distance between parallel conductors, etc., can solve the lack of ways to release line galloping energy, affect the safe and stable operation of transmission lines, and cannot quickly eliminate line galloping, etc. problem, to achieve the effect of suppressing sub-gap vibration, simple and practical structure, and suppressing breeze vibration

Active Publication Date: 2016-09-07
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, these composite interphase spacers are generally connected by ordinary rod insulators and ordinary clamp fittings, which can only limit galloping to a certain extent, and are not effective in suppressing breeze vibration and sub-gap vibration.
When the weather conditions are very bad, once the line gallop occurs, the ordinary composite interphase spacer lacks a way to release the line gallop energy, and cannot quickly eliminate the line gallop
At the same time, dancing for a long time may also easily cause defects such as loose clamp bolts and crushed lines, which require regular maintenance
Such equipment has potential safety hazards, which will directly affect the safe and stable operation of transmission lines and increase maintenance costs

Method used

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  • A spring shock-absorbing type phase-to-phase anti-galling spacer
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  • A spring shock-absorbing type phase-to-phase anti-galling spacer

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Embodiment Construction

[0020] The present invention is a spring shock-absorbing type interphase anti-galling spacer, such as Figure 1 ~ Figure 4 As shown, the present invention includes a sleeve type anti-galling shock absorber 1, two interphase spacer rod insulators 2, two sets of wire clamp glands 3, two sets of wire clamp fastening bolt pins 4 and wire clamp fastening bolt nuts 5 , Two groups of spacer bar fastening bolt pins 6 and spacer bar fastening bolt nuts 7 are formed. Specifically, the anti-galling shock absorber 1 is connected to the middle of the two interphase spacer insulators 2 through connecting fittings 8;

[0021] The wire clip gland 3 is respectively provided with a wire clip gland double-ear structure 10 or a single-ear structure 11 for connecting fittings.

[0022] The anti-galling shock absorber 1 of the present invention is to be provided with the guide bar 13 that has convex buckle baffle plate 14 in the shock absorber sleeve shell 16, and the shock absorber damping spring...

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Abstract

The invention belongs to the field of design, operation and maintenance of overhead transmission lines in power systems, and in particular relates to a spring shock-absorbing interphase anti-galling spacer, which is mainly used for transmission lines with voltage levels of 66kV and above. In the present invention, the anti-galling shock absorber is connected to the middle part of the two interphase spacer insulators through connecting fittings; the outer two ends of the two interphase spacer insulators are respectively connected to the clamp cover through connecting fittings. The invention can withstand pressure or tension, the guide rod can guide the interphase spacers to move along the axial direction of the spring, and the convex buckle baffle can organize the damping spring to bear excessive tension. It can effectively improve the force distribution of the wire clip joint after the torque is increased after the wire is covered with ice, can effectively suppress the line breeze vibration and sub-gap vibration, and provide a quick release of galloping self-excited oscillation energy when galloping is caused by very bad weather conditions. significantly. The utility model has the characteristics of simple and practical structure, convenient installation, low cost and maintenance-free, and has wide application prospects.

Description

technical field [0001] The invention belongs to the field of design, operation and maintenance of overhead power transmission lines in power systems, and in particular relates to a spring shock-absorbing interphase anti-galling spacer, which is mainly used for power transmission lines with a voltage level of 66kV and above. Background technique [0002] When the wind blows on the overhead transmission line with a non-circular cross-section due to ice coating, it will generate a certain amount of aerodynamic force, which will easily induce a low-frequency, large-amplitude self-excited oscillation of about 0.1-3 Hz in the line. The upper performance is that there is only one or a few half-waves in a span, which is called galloping. Galloping is extremely harmful to overhead transmission lines. It will cause line flashover, tripping, loosening and falling off of tower bolts, and in severe cases, damage to hardware and insulators, broken strands, broken wires, and even tower col...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G7/14H02G7/12
Inventor 李学斌姜常胜鲁旭臣耿莉娜朱义东韩洪刚李斌胡大伟李爽刘松
Owner STATE GRID CORP OF CHINA
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