CN202917920U

CN202917920U - Damping type anti-galloping device

Info

Publication number: CN202917920U
Application number: CN 201220409179
Authority: CN
Inventors: 路永清; 赵宇田; 余东; 姜喜权; 柏立芳; 温中华; 杨青坤
Original assignee: SIPING LINE MATERIALS FACTORY
Current assignee: SIPING LINE MATERIALS FACTORY
Priority date: 2012-08-17
Filing date: 2012-08-17
Publication date: 2013-05-01
Anticipated expiration: 2022-08-17

Abstract

Disclosed in the utility model is a damping type anti-galloping device that is capable of providing high-efficiency vibration damping for an overhead transmission line. Supporting arms are connected to a dual framework of a multi-divided conductor spacer; and a metal cylinder with a damping material is fixedly connected by the supporting arms and is used with matching with the multi-divided conductor spacer. Because the weight of the combination of the metal cylinder and the damping material is enough, the power stability of a conductor system can be improved and thus the effect of a double-pendulum anti-galloping device can be realized. Meanwhile, a metal ball can roll freely in the damping fluid inside the metal cylinder; and during the rolling of the metal ball, the friction is caused between the metal ball and the damping fluid to consume energy and springs are compressed. After the compression of the springs, the collision of the metal ball absorbing the energy with sealing baffle plates inside the metal cylinder or the springs at two ends is caused to change the frequency of the conductor system, so that the galloping of the conductor of the overhead transmission line can be reliably inhibited. Moreover, the anti-galloping device has advantages of novel and unique invention conception, compact and reasonable structural design, convenient and flexible installation and usage, stable and reliable working performance, and obvious anti-galloping effect and the like and is suitable for popularization and application in the industry.

Description

The damp type anti-dance device

Technical field

The utility model relates to a kind of anti-dancing device, particularly relate to a kind of can be for overhead transmission line provides the high-efficiency vibration damping, and can prevent the anti-dancing device that the overhead transmission line bundle conductor is waved.

Background technology

Wave be power line conductive () after eccentric icing occurs in line, a kind of low frequency that under the excitation of wind, produces, the self-excited vibration of large amplitude.Waving is one of principal element that threatens the transmission line security of operation, and the lighter can cause line flashover, tripping operation, and gold utensil can occur severe one, insulator damages, lead () disconnected strand of line, broken string, the steel tower bolt gets loose, even falls tower, brings serious harm for the safe operation of electric power system.At present, bring harm for fear of waving to transmission line, the anti-dancing device of often installing and using on transmission line wire has inter-phase spacer, wire clamp revolution conductor spacer, two parallel wielded-proof device, flow-disturbing anti-dance device and detuning pendulum etc.

Wherein inter-phase spacer is that the composite insulation structure that is made of fiber reinforced plastics rod and silicone rubber jacket is being set between two phase conductors or between the loop.Be a kind of conductor spacer with insulation property and mechanical strength, it mechanically couples together each wire, and the motion of each wire is restricted mutually, the purpose of waving to reach inhibition.It has tensile strength height, lightweight, and certain pliability, impact resistance, the not broken and high of anti-the pollution flashover voltage are arranged.It is the anti-dancing device that is widely used in the transmission line of 220kV and following electric pressure.Yet also exist deteriorated, bending rigidity is little and the deficiency of anti-dance cost height.

1/2 wire clamp of many division wire clamp revolution conductor spacers is identical with conventional wire clamp of conductor spacer, can not freely rotate, and allows it to swing within the specific limits; 1/2 wire clamp can freely freely rotate in the certain angle scope in addition, and rotatable wire clamp is towards windward side during installation.When wire generation icing, icing is generally always eccentric and towards windward side, eccentric mass makes wire rotate in the required angle scope with wire clamp, so continuous icing, the result who constantly rotates have changed the icing shape (it is circular that the cross sectional shape of ice coating wire is tending towards) of wire and the wind load stress condition of ice coating wire, make ice coating wire not satisfy the condition of waving, reach and suppress the purpose that wire icing is waved.

Two parallel wielded-proof device is the anti-dancing device that consists of by set up a similar weight below the framework of many cracking separation rods, is intended to improve the kinetic stability of wiring system, also has the function of ballast anti-dance simultaneously concurrently.Two parallel wielded-proof device belongs to the rigidity anti-dance device, though have good anti-dance performance, the characteristics that cost is lower, easy for installation, but use this anti-dance device that a whole set of complete design and calculation method will be arranged, if design unreasonable (actual ice wind condition surpasses the scope of setting up defences), then circuit still may be waved, and without designing and calculating and blindly application can reduce its anti-dance effect greatly, even gives the safe operation band of circuit

Come negative effect.

Flow-disturbing anti-dance device and detuning pendulum are the anti-dancing devices that arranges for solid conductor, wherein the flow-disturbing anti-dance device is the prefabricated interfering line that plastics are made, be wrapped on the wire, so that each cross sectional shape of wire and flow-disturbing line compound body all differs from one another, even also still like this behind icing.This anti-dancing device quality is light, be easy to install, and is also very little to the negative effect of wire, icing thinner (≤10mm) time, the anti-dance effect is better.And icing thicker (＞10mm) time, conductor cross-section reaches unanimity behind the icing because thick ice covers, the flow-disturbing successful reduces, and because the flow-disturbing anti-dance device generally selects polyvinyl chloride to make, it is different from the coefficient of linear expansion of wire, can produce laxly in summer, may cause the position slippage.And there are problems such as aging, deteriorated.

Detuning pendulum is that the mechanical device with weight of certain mass and brachium is installed below wire.Detuning pendulum is based on the torsional oscillation excitation mechanism, uses detuning pendulum to adjust Torsional Vibration Natural Frequency, makes it to separate with the high-order natural frequency of transverse vibration, thereby prevents its coupling and bring out and wave.There is dispute in detuning pendulum aspect anti-dance, cause range of application less.

Because generation and the evolution of overhead transmission line galloping are very complicated, but also comprise many enchancement factors, not yet form up till now the mechanism explain of generally acknowledging.Above-described all kinds of anti-dancing device has the limitation of its special design feature and application, and different anti-dance apparatus cost difference is also larger, and also each is variant for the anti-dance performance.

Summary of the invention:

The utility model is for a kind of damp type anti-dance device is provided, when purpose is to solve overhead transmission line and adopts multiple fission conductor, and the problem of waving of wire.

Scheme of the present utility model is as described below: this utility model comprises multiple fission conductor conductor spacer, cushion block, connecting bolt, it is to connect support arm by the two frameworks at the multiple fission conductor conductor spacer, and is connected and fixed through support arm that a metal cylinder that is built-in with damping-article realizes.

This utility model is the metal cylinder of damping-article owing to taked said structure in especially being provided with, with the use that is complementary of itself and multiple fission conductor conductor spacer.Because metal cylinder and damping-article are added together enough quality, can improve the kinetic stability of wiring system, play the effect of two parallel wielded-proof device, simultaneously Metal Ball can be in metal cylinder internal damping liquid Free-rolling, when rolling, Metal Ball produces the consumed energy that rubs with damping fluid, Compress Spring when Metal Ball is rolled, behind the spring-compressed absorbed energy can with metal cylinder in sealing baffle or two ends spring produce collision impact and change the wiring system frequency, reliably suppress waving of overhead transmission line conductor.And have novel uniqueness of inventive concept, structural design compact and reasonable, easy to install flexibly, stable and reliable working performance, anti-dance effect significantly, the industry that suits the advantage such as applies.

Description of drawings:

Fig. 1 is the utility model overall structure schematic diagram;

Fig. 2 is the B-B cutaway view of Fig. 1;

Fig. 3 is the utility model support arm front view;

Fig. 4 is the B-B cutaway view of Fig. 3;

Fig. 5 is metal cylinder internal structure schematic diagram;

Fig. 6 is that metal cylinder and multiple fission conductor parallel direction arrange structural representation;

Fig. 7 is the end view of Fig. 6.

Embodiment

A kind of new product that designs in order to prevent the power system transmission line multiple fission conductor from waving by Fig. 1-damp type anti-dance device of the present utility model shown in Figure 7.It is the two frameworks 10 connection support arms 3 at the multiple fission conductor conductor spacer, and described support arm 3 is individual have upper splicing ear and molecular symmetrical expression connecting plates of lower link.Two support arms 3 are staggered relatively in multiple fission conductor conductor spacer framework 10, and fill up two cushion blocks 1 in the middle of the upper splicing ear of two support arms 3, and are fixing with multiple fission conductor conductor spacer framework 10 through attachment bolt 2.This support arm 3 also is connected and fixed a metal cylinder 4 that is built-in with damping-article through lower splicing ear.Described metal cylinder 4 is a circular arc or rectilinear hollow cylinder, be respectively equipped with sealing baffle 5 and anti-corona end cap 6 at described hollow cylinder two ends, also be provided with symmetrical gusset piece on described metal cylinder 4 hollow cylinders, and through described gusset piece described metal cylinder 4 be connected with support arm 3.Described metal cylinder 4 its hollow cylinders can be arranged in parallel with wire (seeing Fig. 6, Fig. 7) or vertical arrangement (seeing Fig. 1, Fig. 2, Fig. 5).Described metal cylinder 4 built-in damping-articles are comprised of damping fluid 7 and hardware.Described damping fluid 7 is thick liquid.Described hardware is that Metal Ball 8(sees Fig. 1) or see Fig. 5 by Metal Ball 8 and the set damping spring 9(in metal cylinder 4 interior two ends) consist of.The damping spring at described two ends all has an end to be fixed on the sealing baffle 5.The utility model assembling is complete should inject damping fluid 7 in the metal cylinder 4, tightens sealing plug and can use.This utility model can be widely used in binary fission, quadripartion, six divisions and the eight division electricity transmission line wire anti-dances of China's overhead transmission line and administer in the engineering.

Claims

1. damp type anti-dance device, comprise bundle conductor conductor spacer, cushion block (1), connecting bolt (2), it is characterized in that: the two frameworks (10) at the multiple fission conductor conductor spacer connect support arm (3), and are connected and fixed a metal cylinder (4) that is built-in with damping-article through support arm (3).

2. damp type anti-dance device according to claim 1, it is characterized in that: described metal cylinder (4) is a circular arc or rectilinear hollow cylinder, be respectively equipped with sealing baffle (5) and anti-corona end cap (6) at described hollow cylinder two ends, also be provided with symmetrical gusset piece on described metal cylinder (4) hollow cylinder, and through described gusset piece described metal cylinder (4) be connected with support arm (3).

3. damp type anti-dance device according to claim 1 is characterized in that: described support arm (3) is to have upper splicing ear and the molecular symmetrical expression connecting plate of lower link.

4. damp type anti-dance device according to claim 1 is characterized in that: described damping-article is comprised of damping fluid (7) and hardware.

5. damp type anti-dance device according to claim 4, it is characterized in that: described damping fluid (7) is thick liquid.

6. damp type anti-dance device according to claim 4 is characterized in that: described hardware is Metal Ball (8) or is made of the set damping spring (9) of Metal Ball (8) and the interior two ends of metal cylinder (4).

7. damp type anti-dance device according to claim 6, it is characterized in that: the damping spring at described two ends (9) all has an end to be fixed on the sealing baffle (5).