CN109994979B - Multi-bundle conductor bundle deicing overturning prevention device - Google Patents
Multi-bundle conductor bundle deicing overturning prevention device Download PDFInfo
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- CN109994979B CN109994979B CN201910072629.XA CN201910072629A CN109994979B CN 109994979 B CN109994979 B CN 109994979B CN 201910072629 A CN201910072629 A CN 201910072629A CN 109994979 B CN109994979 B CN 109994979B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/12—Devices for maintaining distance between parallel conductors, e.g. spacer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
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Abstract
The invention provides a multi-split conductor bundle deicing overturning prevention device which comprises a spacing rod, a swing rod and a balancing weight; the spacing rods are clamped on the multi-split conductor bundles and provided with central shafts; the pendulum rod upper end get into the conductor spacer and with the center pin of conductor spacer is articulated, and its lower extreme is connected with the balancing weight, has solved many split conductors by the inhomogeneous icing of subconductor and the static twist and the torsional vibration problem that dessicates asynchronously and cause, and has shortened the vibration time, can make the vibration stop fast, avoids causing the damage to subconductor and subconductor conductor spacer and alternate conductor spacer. The structure is simple, the ice-shedding overturning phenomenon of the multi-split conductor bundle can be well prevented, and the condition that the sub-conductors and the spacers are damaged due to ice-shedding overturning of the multi-split conductor bundle is avoided; the invention has convenient installation and high reliability, and the rigidity of the spring, the weight of the balancing weight and the distance between the upper edge of the balancing weight and the lower edge of the frame in the spacer are all adjustable, thereby having wide application range.
Description
Technical Field
The invention relates to the technical field of overhead transmission lines, in particular to a multi-bundle conductor bundle deicing overturning prevention device.
Background
When the environmental temperature rises or the wind power and the icing gravity are combined for use, the icing falls off from the ground wire, so that the icing load is suddenly unloaded, and the lead wire is greatly vibrated and jumped, which is called ice shedding jump. The deicing jump may cause electrical accidents such as short circuit or flashover and the like and mechanical damage accidents such as strand breakage and wire breakage, damage of hardware fittings and pole tower components and the like, particularly for the multi-split conductor bundle, once the uneven ice coating of the sub-conductors in the multi-split conductor bundle occurs, the static torsion of the multi-split conductor bundle is caused, the asynchronous deicing of the sub-conductors may cause the large torsional vibration of the multi-split conductor bundle, the torsion instability of the multi-split conductor bundle is caused in serious cases, the sub-conductors are twisted together, even if the ice coating is completely melted and fallen, the multi-split conductor bundle cannot be restored to the original state, the sub-conductors, the sub-conductor spacers and the interphase spacers are damaged, and the power supply safety is threatened.
In the prior art, the damage of ice shedding jump is reduced by adding an interphase spacer on part of transmission lines, increasing the interphase distance, using a V-shaped insulator string and the like, and the problems of static twisting and torsional vibration of a multi-split conductor caused by uneven ice coating of sub-conductors and asynchronous ice shedding cannot be solved. In addition, in the prior art, deicing overturning prevention is mainly realized in a mode of limiting conductor vibration and increasing electrical safety distance, once deicing torsional vibration occurs in a multi-split conductor bundle, vibration energy is mainly consumed through sub-conductor self-damping and spacer damping, and the multi-split conductor bundle can be stopped after a long time, so that the sub-conductors, the sub-conductor spacers and the interphase spacers are damaged.
Disclosure of Invention
In order to overcome the defects of static twisting and torsional vibration of the multi-bundle conductor in the prior art, the invention provides a multi-bundle conductor deicing and overturning prevention device, which comprises a spacing rod, a swinging rod and a balancing weight; the spacing rods are clamped on the multi-split conductor bundles and provided with central shafts; the upper end of the swing rod enters the spacing rod and is hinged with the central shaft of the spacing rod, the lower end of the swing rod is connected with the balancing weight, the swing rod is hinged with the central shaft to enable the swing rod to swing, and the problems of static twisting and torsional vibration of the multi-bundle conductor caused by uneven ice coating of sub-conductors and asynchronous ice shedding are solved.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
on one hand, the invention provides a multi-split conductor bundle deicing and overturning prevention device which comprises a spacing rod, a swing rod and a balancing weight; the spacing rods are clamped on the multi-split conductor bundles and provided with central shafts; the upper end of the swing rod enters the spacing rod and is hinged with the central shaft of the spacing rod, and the lower end of the swing rod is connected with the balancing weight.
The spacer comprises a spacer frame, and the spacer frame comprises a frame, a partition plate, a central shaft, a first cover plate and a second cover plate;
the frame is provided with a cavity, the partition board is vertically arranged in the cavity, one end of the partition board is connected with the top of the frame, and the other end of the partition board is connected with the central shaft;
the first cover plate and the second cover plate are respectively positioned at two sides of the frame, holes are formed in the central positions of the first cover plate and the second cover plate, and the central shaft horizontally penetrates through the holes of the first cover plate and the second cover plate;
the cavity is divided into a first cavity and a second cavity by the upper end of the swing rod, the central shaft and the partition plate.
The device further comprises a spring, wherein the spring is arranged in the cavity of the spacer, one end of the spring is fixed on the partition plate, and the other end of the spring is connected with the swing rod.
The springs are provided with an even number and are evenly divided into a first spring group and a second spring group, the first spring group and the second spring group are respectively positioned in the first cavity and the second cavity, and the number and the rigidity of the springs in the first cavity and the second cavity are equal.
And the cavity is filled with damping materials.
The damping material adopts any one or the combination of at least two of the following materials:
foam, metal particles and oil.
The spacer also comprises a wire clamp pressing plate, a wire clamp body and a hinge pin;
the wire clamp pressing plate is connected with the wire clamp body through a hinge or a bolt to clamp the sub-wires of the multi-split wire bundle;
the wire clamp body is connected with the convex parts uniformly arranged around the frame through the hinge pin.
The frame further comprises two sealing covers, one end of each sealing cover is fixed to the lower edge of the frame, and the other end of each sealing cover is provided with a protrusion and abuts against the groove in the side face of the oscillating bar through the protrusion.
The rigidity of the spring and the weight of the balancing weight are determined according to the structural parameters of the multi-split conductor bundle and the icing condition;
the distance between the upper edge of the balancing weight and the lower edge of the frame in the spacer is determined according to the structural parameters of the multi-split conductor bundle, the ice coating condition and the installation position of the prevention and control device.
The structural parameters comprise the type and the number of the sub-conductors in the multi-split conductor bundle and the span and the inter-span height difference of the multi-split conductor bundle.
The fixing mode of the swing rod and the balancing weight adopts any one of the following modes:
welding, bolting, and crimping.
The sealing cover is made of elastic rubber materials.
Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention provides a multi-split conductor bundle deicing overturning prevention device which comprises a spacer, a swing rod and a balancing weight; the spacing rods are clamped on the multi-split conductor bundles and provided with central shafts; the upper end of the swing rod enters the spacer and is hinged with a central shaft of the spacer, the lower end of the swing rod is connected with the balancing weight, and the swing rod is hinged with the central shaft so that the swing rod can swing, and the problems of static twisting and torsional vibration of the multi-bundle conductor caused by uneven ice coating and asynchronous ice shedding of sub-conductors are solved;
the invention consumes the vibration energy through the spring and the damping material, shortens the vibration time, can quickly stop the vibration and avoids the damage to the sub-conducting wires, the sub-conducting wire spacers and the interphase spacers;
the device provided by the invention has a simple structure, can play a better role in preventing and treating the deicing and overturning phenomenon of the multi-bundle conductors, and avoids the condition that the sub-conductors and the spacers are damaged by the deicing and overturning of the multi-bundle conductors;
the device provided by the invention is convenient to install and high in reliability, the rigidity of the spring and the weight of the balancing weight are adjusted according to the structural parameters and the ice coating condition of the multi-split conductor bundle, the distance between the upper edge of the balancing weight and the lower edge of the middle frame of the spacer is adjusted according to the structural parameters and the ice coating condition of the multi-split conductor bundle and the installation position of the prevention and control device, and the applicable range is wide.
Drawings
FIG. 1 is a general structure diagram of a multi-bundle deicing turnover control device in an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of a multi-bundle de-icing rollover prevention device in an embodiment of the present invention;
in the figure, 1-wire clamp pressing plate, 2-wire clamp body, 3-spacing rod frame, 4-spring, 5-damping material, 6-oscillating bar, 7-hinge pin, 8-counterweight block, 9-sealing cover, 10-clapboard and 11-central shaft.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples
The embodiment of the invention provides a multi-bundle conductor deicing and overturning prevention device which specifically comprises a spacing rod, a swing rod 6 and a balancing weight 8; the specific connection relationship is as follows:
the spacing rods are clamped on the multi-split conductor bundles and provided with central shafts; the upper end of the swing rod 6 enters the spacing rod and is hinged with a central shaft 11 of the spacing rod, and the lower end of the swing rod is connected with the balancing weight 8.
The spacing rod is used for ensuring the relative position between the sub-conductors, and comprises a spacing rod frame 3, wherein the spacing rod frame 3 comprises a frame, a partition plate 10, a central shaft 11, a first cover plate and a second cover plate;
the frame is provided with a cavity, the partition board 10 is vertically arranged in the cavity, one end of the partition board is connected with the top of the frame, and the other end of the partition board is connected with the central shaft 11;
the first cover plate and the second cover plate are respectively positioned at two sides of the frame, a hole is formed in the central position of each of the first cover plate and the second cover plate, and the central shaft 11 horizontally penetrates through the hole of the first cover plate and the hole of the second cover plate;
the upper end of the swing rod 6 is hinged on the central shaft 11 and can rotate around the central shaft 11 at a certain angle; the cavity is divided into a first cavity and a second cavity by the upper end of the swing rod 6, the central shaft 11 and the partition plate 10.
The device provided by the embodiment of the invention also comprises a spring 4, wherein the spring 4 is arranged in the cavity of the spacer, one end of the spring 4 is fixed on the partition plate 10, the other end of the spring 4 is connected with the swing rod 6, and the spring 4 is driven to synchronously stretch and retract when the swing rod 6 rotates.
The springs 4 are provided with an even number and are uniformly divided into a first spring group and a second spring group, the first spring group and the second spring group are respectively positioned in the first cavity and the second cavity, and the number and the rigidity of the springs in the first cavity and the second cavity are equal.
The spacer also comprises a wire clamp pressing plate 1, a wire clamp body 2 and a hinge pin 7;
the wire clamp pressing plate 1 is connected with the wire clamp body 2 through a hinge or a bolt and is used for clamping sub-wires of the multi-split wire bundle; bulges are uniformly arranged around the spacer rod frame 3, and the wire clamp body 2 is connected with the convex parts uniformly arranged around the frame through the hinge pin 7.
The frame is further provided with two sealing covers 9, one ends of the two sealing covers 9 are respectively fixed on the lower side of the frame, and the other ends of the two sealing covers 9 are provided with protrusions and abut against the grooves in the side faces of the swing rods 6 through the protrusions. When the balancing weight 8 swings, the sealing cover 9 can be synchronously stretched or shortened, so that the normal movement of the balancing weight 8 can be ensured, the sealing performance can be always ensured, and the damping material 5 is sealed in the inner cavity of the spacing rod frame 3.
The sealing cover 9 is made of elastic material capable of generating large deformation, and the elastic material can be selected from rubber.
When the swing rod rotates, the damping material 5 is frictionally extruded, so that the vibration energy consumption can be accelerated, and the torsional vibration of the multi-split conductor bundle can be stopped as soon as possible; the cavity is filled with a damping material 5, and the damping material 5 adopts any one or a combination of at least two of the following materials:
foam, metal particles and oil.
The rigidity of the spring 4 and the weight of the balancing weight 8 are determined according to the structural parameters of the multi-split conductor bundle and the icing condition, and the swing rod 6 can be caused to act only when the torsion angle or the torsion acceleration of the multi-split conductor bundle exceeds a certain value.
The distance between the upper edge of the balancing weight 8 and the lower edge of the frame in the spacer is determined according to the structural parameters of the multi-split conductor bundle, the ice coating condition and the installation position of the control device provided by the embodiment of the invention.
The structural parameters comprise the type and the number of the sub-conductors in the multi-split conductor bundle and the span and the inter-span height difference of the multi-split conductor bundle.
Finally, it should be noted that: the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and a person of ordinary skill in the art can make modifications or equivalents to the specific embodiments of the present invention with reference to the above embodiments, and such modifications or equivalents without departing from the spirit and scope of the present invention are within the scope of the claims of the present invention as set forth in the claims.
Claims (8)
1. A multi-split conductor bundle deicing overturning prevention device is characterized by comprising a spacing rod, a swing rod and a balancing weight;
the spacing rods are clamped on the multi-split conductor bundles and provided with central shafts; the upper end of the swing rod enters the spacing rod and is hinged with a central shaft of the spacing rod, and the lower end of the swing rod is connected with a balancing weight;
the spacer comprises a spacer frame, wherein the spacer frame comprises a frame, a partition plate, a central shaft, a first cover plate and a second cover plate;
the frame is provided with a cavity, the partition board is vertically arranged in the cavity, one end of the partition board is connected with the top of the frame, and the other end of the partition board is connected with the central shaft;
the first cover plate and the second cover plate are respectively positioned at two sides of the frame, holes are formed in the central positions of the first cover plate and the second cover plate, and the central shaft horizontally penetrates through the holes of the first cover plate and the second cover plate;
the cavity is divided into a first cavity and a second cavity by the upper end of the oscillating bar, the central shaft and the partition plate; damping materials are filled in the cavity; the frame further comprises two sealing covers, one ends of the two sealing covers are respectively fixed on the lower edge of the frame, and the other ends of the two sealing covers are provided with bulges and abut against the grooves in the side surfaces of the swing rods through the bulges;
the sealing cover is made of elastic rubber materials.
2. The multi-bundle deicing reversal control device of claim 1, further comprising a spring disposed within the cavity of the spacer, one end of the spring being fixed to the partition and the other end being connected to a swing link.
3. The multiple split harness deicing reversal device of claim 2, wherein an even number of springs are provided, evenly divided into a first spring set and a second spring set, the first spring set and the second spring set are respectively located in the first cavity and the second cavity, and the number and the stiffness of the springs in the first cavity and the second cavity are equal.
4. The multiple split harness ice shedding flip prevention device of claim 1, wherein the damping material is any one of or a combination of at least two of the following:
foam, metal particles and oil.
5. The multi-split harness deicing reversal control device of claim 1, wherein the spacer further comprises a clamp press plate, a clamp body, and a hinge pin;
the wire clamp pressing plate is connected with the wire clamp body through a hinge or a bolt to clamp the sub-wires of the multi-split wire bundle;
the wire clamp body is connected with the convex parts uniformly arranged around the frame through the hinge pin.
6. The multi-bundle deicing reversal control device of claim 2, wherein the stiffness of the spring and the weight of the counterweight are determined according to structural parameters of the multi-bundle and icing conditions;
the distance between the upper edge of the balancing weight and the lower edge of the frame in the spacer is determined according to the structural parameters of the multi-split conductor bundle, the ice coating condition and the installation position of the prevention device.
7. The multiple-split bundle deicing reversal control device of claim 6, wherein the structural parameters include the type and number of sub-conductors in a multiple-split bundle and the gauge and inter-gauge height difference of the multiple-split bundle.
8. The multi-bundle deicing and overturning control device according to claim 1, wherein the pendulum bar and the counterweight are fixed in any one of the following manners:
welding, bolting, and crimping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072629.XA CN109994979B (en) | 2019-01-25 | 2019-01-25 | Multi-bundle conductor bundle deicing overturning prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072629.XA CN109994979B (en) | 2019-01-25 | 2019-01-25 | Multi-bundle conductor bundle deicing overturning prevention device |
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| Publication Number | Publication Date |
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| CN109994979A CN109994979A (en) | 2019-07-09 |
| CN109994979B true CN109994979B (en) | 2023-03-31 |
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| CN201910072629.XA Active CN109994979B (en) | 2019-01-25 | 2019-01-25 | Multi-bundle conductor bundle deicing overturning prevention device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111130040B (en) * | 2019-12-05 | 2021-03-26 | 同济大学 | Composite spacing ring-nutation damper for controlling integral galloping of lead |
| CN112398074B (en) * | 2020-10-16 | 2022-03-22 | 贵州电网有限责任公司 | Anti-torsion rotation type spacer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2819568Y (en) * | 2005-08-01 | 2006-09-20 | 南京康能电力技术有限公司 | Dynamic vibrating damper for preventing conductive wire from swinging |
| CN101692567B (en) * | 2009-09-24 | 2011-09-28 | 中国电力科学研究院 | Pendulum-type damping anti-galloping device |
| CN102684124B (en) * | 2012-04-24 | 2015-04-01 | 中国电力科学研究院 | Five-rod lead-waving resistant power vibration absorber for transmission lines |
| CN107302202B (en) * | 2017-08-08 | 2022-09-27 | 国家电网公司 | Spring damping type phase-to-phase spacer for 500kV overhead transmission line |
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