CN201518409U

CN201518409U - Damper for 1000 kV ultra-high voltage alternating current transmission line

Info

Publication number: CN201518409U
Application number: CN2009200374945U
Authority: CN
Inventors: 姚建生
Original assignee: JIANGSU TIANNAN POWER EQUIPMENT CO Ltd
Current assignee: JIANGSU TIANNAN POWER EQUIPMENT CO Ltd
Priority date: 2009-02-16
Filing date: 2009-02-16
Publication date: 2010-06-30
Anticipated expiration: 2019-02-16

Abstract

The utility model relates to a damper used for a 1000 kV ultra-high voltage alternating current transmission line, which comprises a wire clamp, damper bodies, a steel stranded wire and at least one pre-stranded wire; the wire clamp is fixedly installed and connected with the steel stranded wire, the two damper bodies are respectively and fixedly installed at the both ends of the steel stranded wire, the wire clamp adopting a hippocampus-shaped structure is fixed on the transmission line through the pre-stranded wire, and the damper bodies adopt zinc alloy cucurbit-shaped structures; the joints between the steel stranded wire and the damper bodies are arranged on the side surfaces of damper heads at the fixed ends of the damper bodies, and since separating nails are arranged on the wire clamp, the damper is effectively connected with a transmission cable; circular arc shapes are respectively designed in the corners of a hanging hook and a fixed conduit pipe for the wire clamp so as to avoid point discharge; the damper bodies adopt the zinc alloy cucurbit-shaped structures formed by pressure casting, thereby increasing the specific weight of the damper bodies and reducing the volume of the damper bodies; and the connecting part between the windward side of each damper head at the cantilever end and the damper head is designed into a circular arc shape, and the size of the circular arc is controlled within a certain range, so that point discharge is avoided.

Description

1000kV ultrahigh voltage alternating current transmission lines stockbridge damper

Technical field

The utility model relates to a kind of antihunting device that the power industry electric line is used, the stockbridge damper that the specifically a kind of 1000kV of being used for ultra-high voltage AC transmission is used.

Background technology

Relevant by retrieval patent documentation does not retrieve the stockbridge damper that the 1000kV ultra-high voltage AC transmission identical with the utility model structure used at present as yet.Stockbridge damper has been widely used in overhead transmission line as a kind of vibration absorber of electric line.Existing stockbridge damper is owing to its structural reason, and its profile is clumsy, and is difficult to eliminate the deposition of water and ice, more is easy to generate phenomenons such as point discharge, sudden strain of a muscle dirt simultaneously under 1000kV extra-high-voltage alternating current state.The ZL200720039659.3 of the patentee's application, name is called: the anti-slip type stockbridge damper, aspects such as deposition at vibration-isolating effect, elimination water and ice are greatly improved, but along with improving constantly of transmission voltage, particularly under 1000kV ultra-high voltage AC transmission state, how to reduce the volume of stockbridge damper, eliminate the deposition of point discharge and water and ice, have higher requirement to people, so be necessary existing stockbridge damper is improved, to adapt to the transmission operation under 1000kV extra-high-voltage alternating current state.

Summary of the invention

The purpose of this utility model is that a kind of improvement on existing stockbridge damper basis will be provided, and it is little to have a hammer body volume, can be adapted to the 1000kV ultrahigh voltage alternating current transmission lines stockbridge damper of electric line under the 1000kV extra-high-voltage alternating current state.

To achieve these goals, the utility model is by the following technical solutions:

1000kV ultrahigh voltage alternating current transmission lines stockbridge damper, form by wire clamp, hammer body, steel strand wire, at least one preformed armor rods, wire clamp installs with steel strand wire and is connected, two hammer bodies are packed in the two ends of steel strand wire respectively, preformed armor rods is used for wire clamp is fixed on power transmission line, described wire clamp is a hippocampus shape version, and it is convex structure that its A/C and steel strand wire install link, and wire clamp is provided with 1～6 and separates nail; Described hammer body is a kirsite cucurbit shape structure hammer body, and two hammer body symmetries tilt to be packed on the two ends of steel strand wire; The link position of steel strand wire and hammer body is arranged on the side of stiff end tup of hammer body.

Described wire clamp is made up of separation nail, hook, A/C, separates the top that nail is arranged at hook respectively, and A/C is connected with hook; Its cross section of described hook a corner is the circular shape structure, and its both ends of described A/C are respectively the convex structure form.

Described hammer body becomes cucurbit shape version with zinc alloy diecasting, and hammer body is made up of stiff end tup, coupling part, cantilever end tup, and the distance L between its stiff end tup hammer heart and the cantilever end tup hammer heart is: 150mm＜L＜180mm; The stiff end tup is that round platform smooth transition version is connected with coupling part, cantilever end tup with the coupling part, and the angle α between line between the stiff end tup and the cantilever end tup hammer heart and the steel strand wire between vertical plane is: 8 °≤α≤12 °; Angle β between line between the stiff end tup and the cantilever end tup hammer heart and the steel strand wire between horizontal plane is: 5 °≤β≤8 °; The cantilever end tup is provided with windward side b, and the angle γ between windward side b and the vertical plane is: 30 °≤γ≤45 °, windward side b takes circular arc to be connected with the cantilever end tup, and its R is: 8mm≤R≤15mm.

The big footpath D of the stiff end tup in the described hammer body ₁, the coupling part path D ₂, the big footpath D of cantilever end tup ₃Between ratio Z be: 1.3: 1: 1.8≤Z≤1.5: 1: 2.1.

During use, the wire clamp of stockbridge damper is hung on the installation site of design appointment in the circuit, and make the utility model be in the nature plumbness, take out a preformed armor rods sign of central authorities is aimed on the separation nail centre position of wire clamp, and preformed armor rods is wrapped on the lead; Repeat above-mentioned action, more other two preformed armor rodses are wrapped in respectively on wire clamp and the transmission pressure, thereby stockbridge damper is fixed.

Hammer body adopts kirsite through being cast into cucurbit shape version, its objective is to improving the proportion of hammer body, reduces the hammer body volume and designs; Two hammer bodies symmetry tilts to be fixed on the two ends of steel strand wire, and the space angle between control hammer body and the steel strand wire, its objective is to producing multifrequency resonance, absorbs the vibrations of different frequency, prevents that the lead fatigue damage is provided with; The stiff end tup of hammer body is provided with the windward side, its objective is to improving the ability of facining the wind of hammer body, eliminating to absorb the different frequency vibrations and be provided with; The design of the link position of steel strand wire and hammer body its objective is and is convenient to eliminate water and ice deposition and is provided with on the side arc surface of hammer body stiff end tup.

The utility model has the advantages that: separate nail because wire clamp is provided with 1-6, and with preformed armor rods respectively the interval on wire clamp, thereby stockbridge damper and power transmission cable effectively are intertwined and connected; Because the hook of wire clamp, the corner of A/C are designed to the convex structure form respectively, thereby have avoided point discharge phenomenon; Because two hammer bodies symmetry respectively tilt to be installed in the two ends of steel strand wire, thereby have improved the damping capacity of stockbridge damper; Because hammer body adopts kirsite through being cast into cucurbit shape version, thereby has improved the proportion of hammer body, has reduced the hammer body volume; Because big footpath D with the stiff end tup ₁, the coupling part path D ₂, the big footpath D of cantilever end tup ₃Be controlled within certain proportion, and the space angle between control hammer body and the steel strand wire, thereby eliminated the vibration of transmission line more accurately; Because the tie point of stiff end tup and steel strand wire is arranged on the arc surface of stiff end tup side, thereby water and ice deposition that stiff end tup and steel strand wire junction are produced are in time eliminated; Because it is circular-arc that being connected between the windward side of cantilever end tup and the tup is designed to, and with arc size control within the specific limits, thereby point discharge avoided; Because processing has been taked to polish smooth in the hammer body surface, thereby has improved whole performance, has reduced pollution flashover; Because rational in infrastructure, easy to install, dependable performance is so there is very big practical and popularizing value.

Description of drawings

Below with reference to accompanying drawing the utility model is further described:

Accompanying drawing 1 is the structural representation of the utility model 1000kV ultrahigh voltage alternating current transmission lines with stockbridge damper;

Accompanying drawing 2 is vertical views of accompanying drawing 1;

Accompanying drawing 3 is structural representations of accompanying drawing 1A-A section;

Accompanying drawing 4 is structural representations of accompanying drawing 1B-B section;

Accompanying drawing 5 is structural representations of accompanying drawing 1C-C section.

Embodiment

With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5,1000kV ultrahigh voltage alternating current transmission lines of the present utility model uses stockbridge damper by wire clamp 1, hammer body 2, steel strand wire 3, at least one preformed armor rods 4 formed, the preformed armor rods 4 of present embodiment is three, wire clamp 1 installs with steel strand wire 3 and is connected, two hammer bodies 2 are packed in the two ends of steel strand wire 3 respectively, preformed armor rods 4 is used for wire clamp 1 is fixed on power transmission line, described wire clamp 1 is a hippocampus shape version, it is convex structure that its A/C 13 installs link with steel strand wire 3, described wire clamp 1 is by separating nail 11, hook 12, A/C 13 is formed, separate the top that nail 11 is arranged at hook 12 respectively for 1～6, the separation nail 11 of present embodiment is 4, A/C 13 is connected with hook 12, described hook 12 its cross section a corners are the circular shape structure, and described A/C 13 its both ends are respectively the convex structure form; Described hammer body 2 becomes cucurbit shape version with zinc alloy diecasting, and two hammer body 2 symmetries tilt to be packed on the two ends of steel strand wire 3; Hammer body 2 is made up of stiff end tup 21, coupling part 22, cantilever end tup 23, and the distance L between its stiff end tup 21 hammer hearts and the cantilever end tup 23 hammer hearts is: 150mm＜L＜180mm; The L of present embodiment is: 160mm; Stiff end tup 21 and coupling part 22, cantilever end tup 23 and coupling part 22 are connected for round platform smooth transition version, angle α between line between the stiff end tup 21 and the cantilever end tup 23 hammer hearts and the steel strand wire 3 between vertical plane is: 12 ° of 8 °≤α, the α of present embodiment is 8 °, angle β between line between the stiff end tup 21 and the cantilever end tup 23 hammer hearts and the steel strand wire 3 between horizontal plane is: 5 °≤β≤8 °, the β of present embodiment is 6 °; Cantilever end tup 23 is provided with windward side b, angle γ between windward side b and the vertical plane is: 30 °≤γ≤45 °, the γ of present embodiment is 35 °, and windward side b takes circular arc to be connected with cantilever end tup 23, its R is: 8mm≤R≤15mm, the R of present embodiment are 10mm; The link position of steel strand wire 3 and hammer body 2 is arranged on the side of stiff end tup 21 of hammer body 2.The big footpath D of the stiff end tup 21 in the described hammer body 2 ₁, coupling part 22 path D ₂, the big footpath of cantilever end tup 23 D ₃Between ratio Z be: 1.3: 1: 1.8≤Z≤1.5: 1: 2.1, the Z of present embodiment was 1.3: 1: 1.8.

Claims

1.1000kV ultrahigh voltage alternating current transmission lines stockbridge damper, form by wire clamp (1), hammer body (2), steel strand wire (3), at least one preformed armor rods (4), wire clamp (1) installs with steel strand wire (3) and is connected, two hammer bodies (2) are packed in the two ends of steel strand wire (3) respectively, preformed armor rods (4) is used for wire clamp (1) is fixed on power transmission line, it is characterized in that: described wire clamp (1) is hippocampus shape version, it is convex structure that its A/C (13) installs link with steel strand wire (3), and wire clamp (1) is provided with 1～6 and separates nail (11); Described hammer body (2) is a kirsite cucurbit shape structure hammer body, and two hammer bodies (2) symmetry tilts to be packed on the two ends of steel strand wire (3); The link position of steel strand wire (3) and hammer body (2) is arranged on the side of stiff end tup (21) of hammer body (2).

2. 1000kV ultrahigh voltage alternating current transmission lines stockbridge damper according to claim 1, it is characterized in that: described wire clamp (1) is followed closely (11), hook (12) by separating, A/C (13) is formed, separate and follow closely the top that (11) are arranged at hook (12) respectively, A/C (13) is connected with hook (12); Its cross section of described hook (12) a corner is the circular shape structure, and its both ends of described A/C (13) are respectively the convex structure form.

3. 1000kV ultrahigh voltage alternating current transmission lines stockbridge damper according to claim 1, it is characterized in that: described hammer body (2) becomes cucurbit shape version with zinc alloy diecasting, hammer body (2) is made up of stiff end tup (21), coupling part (22), cantilever end tup (23), and the distance L between its stiff end tup (21) the hammer heart and cantilever end tup (23) the hammer heart is: 150mm＜L＜180mm; Stiff end tup (21) is connected for round platform smooth transition version with coupling part (22) with coupling part (22), cantilever end tup (23), and the angle α between line between the stiff end tup (21) and cantilever end tup (23) the hammer heart and the steel strand wire (3) between vertical plane is: 8 °≤α≤12 °; Angle β between line between the stiff end tup (21) and cantilever end tup (23) the hammer heart and the steel strand wire (3) between horizontal plane is: 5 °≤β≤8 °; Cantilever end tup (23) is provided with windward side b, and the angle γ between windward side b and the vertical plane is: 30 °≤γ≤45 °, windward side b takes circular arc to be connected with cantilever end tup (23), and its R is: 8mm≤R≤15mm.

4. according to claim 1 or 3 described 1000kV ultrahigh voltage alternating current transmission lines stockbridge dampers, it is characterized in that: the big footpath D of the stiff end tup (21) in the described hammer body (2) ₁, coupling part (22) path D ₂, the big footpath of cantilever end tup (23) D ₃Between ratio Z be: 1.3: 1: 1.8≤Z≤1.5: 1: 2.1.