CN105337234A

CN105337234A - Electric vibration damper applying shear thickening fluid

Info

Publication number: CN105337234A
Application number: CN201510721623.2A
Authority: CN
Inventors: 燕同刚; 王治国; 于洁; 曹凤宗; 于天津; 韩永乐
Original assignee: State Grid Corp of China SGCC; Dongying Power Supply Co of State Grid Shandong Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Dongying Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority date: 2015-10-30
Filing date: 2015-10-30
Publication date: 2016-02-17
Anticipated expiration: 2035-10-30
Also published as: CN105337234B

Abstract

The invention discloses an electric vibration damper applying shear thickening fluid, and relates to the technical field of transformer substation electric power guarantee equipment. The electric vibration damper comprises an electric stay cable, a hoop tube and an annular tube cylinder. The hoop tube and the annular tube cylinder are made of silica gel or rubber material. The annular tube cylinder has a shell structure which is internally provided with a cavity, and a center channel is arranged on the axial direction of the annular tube cylinder. The cavity is internally filled with shear thickening fluid. The side surface of the annular tube cylinder is provided with an elastic shrinkage expansion sealing cap which is communicated with the cavity. The hoop tube penetrates through the center channel of the annular tube cylinder and is fixedly connected with the internal wall of the center channel. The hoop tube sleeves the external part of the electric stay cable. A gap between the hoop tube and the electric stay wire is provided with an annular gluing cavity which is internally filled with flexible glue. Both of the hoop tube and the annular tube cylinder have a half body butting sealing structure. The beneficial effects of the electric vibration damper applying shear thickening fluid are that vibration of the electric stay wire is reduced by applying shear thickening fluid so that the effect is obvious and the structure is simple.

Description

The electric power stockbridge damper of application STF

Technical field

The present invention relates to converting station electric power ensuring equipment technical field.

Background technology

The effect of the meteorological conditions such as overhead power line wind-engaging, ice, low temperature, makes circuit produce vibration and wave.Vibration frequency is higher and amplitude is very little, and wind vibration makes line of power at suspension point place repeatedly by stubborn folding, causes fatigue of materials, finally causes disconnected stock, line-outage contingency.The frequency of waving is very low, and amplitude is very large, is easy to cause alternate flashover, causes the serious accidents such as line tripping, power failure or burn wire.Stockbridge damper is an iron leg rod.Because it carrys additionally at circuit tower bar suspension point place, to absorb or to weaken the vibrational energy on circuit, change circuit wobble frequency, prevent the vibration of circuit or wave.At present, common stockbridge damper on market, although certain elimination circuit self-vibration in use can be played and eliminate the effect of the resonance that wind etc. causes, but, because hammer body is from time waving with electric wire, self resistance is little, when being shaken pendulum by wire belt, can not reach best shockproof effect.When rely on increase volume or lifting surface area etc. because usually increasing resistance time, the other problems such as heavy burden simultaneously also can be brought larger, and directly or indirectly damage is caused to circuit, anti-vibration protected effect can not be reached or damping effect poor.

Current stockbridge damper all realizes shock-absorbing by mechanical device, a kind of employing kinetic energy consumption ways, the kinetic energy of power circuit is delivered to stockbridge damper, the inverse motion mode of another kind of employing, namely produce contrary with power line Phases by mechanical device self, the vibrations that frequency is identical with amplitude, the mode offset by vibrations realizes shock-absorbing.Above-mentioned two kinds of modes rely on sensitive machinery or electromechanical structure, complex structure, with high costs.

For the design of stockbridge damper, from the utilization of machinery or dynamo-electric directional steering new function material, complicated mechanical structure can be replaced with new material, also do not apply precedent in power industry at present.

Summary of the invention

Technical problem to be solved by this invention is the technical deficiency for above-mentioned existence, provides a kind of electric power stockbridge damper applying STF.It uses the vibrations of the reduction line of power of STF, and successful, structure is simple.

The technical solution used in the present invention is: provide a kind of electric power stockbridge damper applying STF, comprise line of power, anchor ear pipe, annular socket; Anchor ear pipe and annular socket are silica gel or quality of rubber materials; Annular socket establishes the shell-like structure of cavity in being, it is axially provided with central passage; STF is filled with in cavity; The side of annular socket is provided with and collapses sealing cap with the elasticity of cavity conducting; Anchor ear pipe penetrates the central passage of annular socket and is fixedly connected with central passage inwall; Anchor ear pipe box is in the outside of line of power; Gap between anchor ear pipe and line of power is annular gluing chamber; Annular is filled with flexible glue in gluing chamber; Described anchor ear pipe and annular socket are halfbody Butt sealing structure.

Further optimization the technical program, the outer wall of the annular socket of the electric power stockbridge damper of application STF is fixed with hard detection ring.

Further optimization the technical program, the outer surface of the annular socket of the electric power stockbridge damper of application STF has polytetrafluorethylecoatings coatings.

The present invention is compared with traditional stockbridge damper, and its beneficial effect is:

1, utilize absorbing vibration energy in the process of STF from liquid phase to solid phase, reach the object of damping, the vibrations of the various phase places of line of power all directions, frequency, amplitude can be tackled, effectively can both carry out damping.

In the technical program, in annular gluing chamber, fill flexible glue makes line of power be connected with anchor ear pipe and can transmit vibrations, anchor ear pipe is connected with central passage, there is flexible material (rubber or silica gel) make because anchor ear pipe and annular socket are, so can the vibrations of line of power be delivered in cavity, and in cavity, fill STF, anchor ear pipe and central passage submergence surround by STF, the vibrations of line of power cause the Liquid-solid Transition of the STF of central passage near zone, the resistance that corresponding vibrations direction is contrary is provided, and STF in other regions beyond central passage along with widening of distance center passage, phase transformation is successively decreased gradually, the transmission of vibrations can be blocked after absorbing vibration, prevent whole device from resonating.

2, by the impact in temperature season, the pyrocondensation of STF meeting heat expansion, elasticity collapses sealing cap and by the change in volume of self, can reduce annular socket elasticity and collapse, improve its life-span.

3, when this device use to carry out repair and maintenance after a period of time time, hard detection ring can be touched by vibration motor, hard detection ring can drive the STF in annular socket to resonate, by before touching vibrations and the firmness change of vibrations annular tube cylinder detect STF whether sex change.

4, polytetrafluoroethylmaterial material has extremely strong not viscosity and corrosion resistance, can reduce dust, ice and snow deposition, ensure the elasticity of annular socket.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is decomposing schematic representation of the present invention.

In figure, 1, line of power; 2, anchor ear pipe; 3, annular socket; 4, cavity; 5, central passage; 6, elasticity collapses sealing cap; 7, annular gluing chamber; 8, hard detection ring.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.

As shown in Figure 1 and Figure 2, the electric power stockbridge damper of application STF, comprises line of power 1, anchor ear pipe 2, annular socket 3; Anchor ear pipe 2 and annular socket 3 are silica gel or quality of rubber materials; Annular socket 3 establishes the shell-like structure of cavity 4 in being, it is axially provided with central passage 5; STF is filled with in cavity 4; The side of annular socket 3 is provided with and collapses sealing cap 6 with the elasticity of cavity 4 conducting; Anchor ear pipe 2 penetrates the central passage 5 of annular socket 3 and is fixedly connected with central passage 5 inwall; Anchor ear pipe 2 is enclosed within the outside of line of power 1; Gap between anchor ear pipe 2 and line of power 1 is annular gluing chamber 7; Annular is filled with flexible glue in gluing chamber 7; Described anchor ear pipe 2 and annular socket 3 are halfbody Butt sealing structure; The outer wall of annular socket 3 is fixed with hard detection ring 8; The outer surface of annular socket 3 has polytetrafluorethylecoatings coatings.

Operation logic in the present embodiment is: utilize STF to be surrounded by line of power 1, the vibrations of line of power 1 are enable to be delivered in STF, the shock effect of line of power 1 is in STF, STF shows as and is constantly subject to shearing force, no matter the vibrations of which direction, what phase place, what frequency, what amplitude, the resistance of the generation correspondence that capital is adjoint, by shock absorption, power dissipation is in STF.

Just can there is liquid-solid phase transformation in the position that STF is given a shock impact, away from the position impacted because the absorption degree of transformation of vibrations is more and more less, so except other positions of central passage 5, to be given a shock the impact of diffusion little in annular socket 3, during this device busy, from macroscopically, annular socket 3 is arranged on line of power 1 and does not shake along with the vibrations of line of power 1, and the STF of its inside constantly creates antagonism the power that line of power 1 shakes.

In the present embodiment, annular socket 3, anchor ear pipe 2 are halfbody docking structure and assemble, object is easily installed on the line of power 1 that laid, and reserved annular gluing chamber 7 object is that anchor ear pipe 2 can not directly be clamped on line of power 1, because line of power 1 great majority are steel strand wire, gap is more, can not fit tightly with anchor ear pipe 2, in annular gluing chamber 7, the object of perfusion flexible glue is by seamless link between line of power 1 and anchor ear pipe 2, the vibrations of line of power 1 is all directed on anchor ear pipe 2.

When this device carries out repair and maintenance after using a period of time, hard detection ring 8 can be touched by vibration motor, hard detection ring 8 can drive the STF in annular socket 3 to resonate, by before touching vibrations and the firmness change of vibrations annular tube cylinder 3 detect STF whether sex change.

Claims

1. apply an electric power stockbridge damper for STF, it is characterized in that: comprise line of power (1), anchor ear pipe (2), annular socket (3); Anchor ear pipe (2) and annular socket (3) are silica gel or quality of rubber materials; Annular socket (3) establishes the shell-like structure of cavity (4) in being, it is axially provided with central passage (5); Cavity is filled with STF in (4); The side of annular socket (3) is provided with and collapses sealing cap (6) with the elasticity of cavity (4) conducting; Anchor ear pipe (2) penetrates the central passage (5) of annular socket (3) and is fixedly connected with central passage (5) inwall; Anchor ear pipe (2) is enclosed within the outside of line of power (1); Gap between anchor ear pipe (2) and line of power (1) is annular gluing chamber (7); Flexible glue is filled with in annular gluing chamber (7); Described anchor ear pipe (2) and annular socket (3) are halfbody Butt sealing structure.

2. the electric power stockbridge damper of application STF according to claim 1, is characterized in that: the outer wall of annular socket (3) is fixed with hard detection ring (8).

3. the electric power stockbridge damper of application STF according to claim 1, is characterized in that: the outer surface of annular socket (3) has polytetrafluorethylecoatings coatings.