CN203722177U - Wire antivibration system - Google Patents
Wire antivibration system Download PDFInfo
- Publication number
- CN203722177U CN203722177U CN201420074220.4U CN201420074220U CN203722177U CN 203722177 U CN203722177 U CN 203722177U CN 201420074220 U CN201420074220 U CN 201420074220U CN 203722177 U CN203722177 U CN 203722177U
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- wire
- lace
- stockbridge damper
- vibrating system
- damper
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Abstract
The utility model discloses a wire antivibration system. The overhead transmission wire comprises: a stockbridge damper, wherein the stockbridge damper is used to perform auxiliary antivibration on the wire; a damper line, wherein a short lace subjected to the layer stripping process and a long lace which does not subjected to the layer stripping process in the damper line are used in a cooperative manner to perform main antivibration on the wire, and the stockbridge damper is installed in the long lace on the inner side of the damper line; and an armour rod, wherein the armour rod is wounded around a clamping and fixing point, and the damper line is arranged from the short lace to the long lace from the span middle side to the span end side. The antivibration system of the utility model is used in the antivibration of a strong steel core high-strength aluminum alloy wire used in extra-high voltage direct-current long span to solve the problem that the dynamic bending strain exceeds an allowed standard value in large span length, large wire cross section and large wire stress conditions, prevent the wire fatigue breaking caused by aeolian vibration, and ensure the line safe and stable operation.
Description
Technical field
The utility model relates to a kind of anti-vibrating system of wire, particularly relates to the anti-vibrating system of wire for the large leap of a kind of ± 800kV extra-high voltage direct-current.
Background technology
Along with socioeconomic fast development, to the demand of electricity consumption also rapid growth.But primary energy skewness and distant, passway for transmitting electricity land used is more and more nervous.In order to address the above problem, improve transmission line capability, build the more transmission line of voltage levels and for long distance power transmission, will be a kind of new solution as backbone network.
Ultra high voltage in current domestic transmission line backbone network (as ± 800kV, 1000kV) used this Extra High Strength steel core of AACSR/EST-720/320 high strength alumin ium alloy wire on large cross line.Conductor vibration is to threaten transmission line, the key factor of especially large span span line safe operation.Countries in the world work about electric power person is in the vibration mechanics characteristic of transmission line and prevent from having carried out in countermeasure a large amount of theoretical researches and scientific experimentation.For across river large span span line over strait, the design studies of vibrationproof scheme is particularly important.
Oscillatory type has aeolian vibration, subspan oscillation, wave, the vibration of ice-shedding, corona, electromagnetic force vibration.That for large leap emphasis, need to suppress is aeolian vibration, subspan oscillation and waves 3 kinds of patterns.
Subspan oscillation refers to the vibration of (between two conductor spacers) in inferior span of bundle conductor sub-conductor that the wake effect of wind causes, and frequency is generally at 1～5Hz, and amplitude is generally 4～20 times of sub-conductor diameter.Subspan oscillation is by choosing enough wire heading spacings, reduce time span length, using damping conductor spacer can limit the subspan oscillation of wire by the measures such as distance of optimization principles adjustment conductor spacer.
Waving is significantly oscillation phenomenon of a kind of low frequency, ice, wind are the necessary conditions of its generation, its vibration frequency is conventionally at 0.1～3Hz, amplitude is about 5～300 times of diameter of wire, cause the flashover of alternate or relative grounded parts, the dynamic load that conductor galloping produces can damage insulator string and shaft tower member, and serious meeting damages wire.Can take anti-ice cover, damping dissipation energy, take the measures such as anti-dance design to carry out anti-dance.If not in waving district, the measure of generally taking is the initial stage anti-dance device not to be installed, only on conductor spacer, reserve anti-dancing device is installed, when waving, two parallel wielded-proof device etc. is just installed, and the additional load of waving when wire is waved is taken into account in advance when design, and important coupling components is pressed to load capacity calculation fatigue strength.
Aeolian vibration be in 3 kinds of vibration forms harm the most seriously, need the vibration form paid close attention to most, little at wind speed, in the uniform situation of wind speed, lead, ground wire often just produces aeolian vibration, it is that a kind of high frequency slightly vibrates, the duration is long.Occur after aeolian vibration, there is alternating bending distortion in suspension clamp exit, line thigh adds again dynamic bending stress outside original various static force that are subject to (bending stress of pulling force, wire clamp outlet, extrusion stress etc.), increase along with applied stress, electric wire self-damping hydraulic performance decline, due to reason economically, electric wire applied stress can not be obtained again very little, usually on the fatigue limit of electric wire own, therefore under the long term of moving bending strain, electric wire there will be tired disconnected strand, and mostly occurs in crossover tower suspension clamp exit.As can be seen here, the most critical for the safeguard procedures of aeolian vibration.
Therefore,, for meeting the vibrationproof demand of this wire, need to provide a kind of novel anti-vibrating system.
Utility model content
Wire is installed after vibration protection, the major function of vibration-proof equipment is to cut down vibration wave to advance to wire clamp outlet, originally at the larger moving bending strain of wire clamp outlet, can near electric wire dump wire clamp, stockbridge damper chuck, share, make moving bending strain everywhere all unlikely excessive, in safe operation can tolerance range.The utility model adopts stockbridge damper to add the mode of β damping wire, and by damping wire is carried out to delamination, length is arranged in pairs or groups, and stockbridge damper is rationally placed to the measure of grade, controls and moves bending strain within the scope of permissible value, accomplishes the full rate covering protection to wire aeolian vibration.
The purpose of this utility model be to provide a kind of novel for the ± large leap of 800kV extra-high voltage direct-current the anti-vibrating system with wire, make wire under long-time running condition, not occur tired disconnected strand, ensure circuit safe operation.
First aspect of the present utility model, provides a kind of anti-vibrating system of guiding, comprising:
Stockbridge damper, described stockbridge damper is assisted vibrationproof to described wire;
Damping wire has carried out the short lace that delamination processes and the long lace collocation of not carrying out delamination processing and has used described wire is carried out to main vibrationproof in described damping wire, and described stockbridge damper is installed in the long lace of survey in this damping wire; And
Protect lines, described in protect lines and be wrapped in clamping point,
In shelves, side direction shelves are distolateral arranges described damping wire from short lace to long lace.
In another preference, described damping wire adopts aluminum alloy materials.
In another preference, described aluminum alloy materials is steel reinforced aluminium conductor.
In another preference, described stockbridge damper is energy-saving stockbridge damper.
In another preference, the chuck of described stockbridge damper adopts aluminum alloy materials.
In another preference, described stockbridge damper adopts tuning-fork type tup, and tup is arranged symmetrically with.
In another preference, described in protect lines and adopt aluminum alloy materials.
In another preference, described in protect lines end be smooth Duckbill type.
In another preference, described clamping point comprises wire clamp outlet and the point of described stockbridge damper is installed.
In another preference, described wire is the extra-heavy steel core high strength alumin ium alloy wire for the large overhead crossing engineering of extra high voltage direct current transmission line.
Wire is installed after vibration protection, the major function of vibration-proof equipment is to cut down vibration wave to advance to wire clamp outlet, originally at the larger moving bending strain of wire clamp outlet, can near electric wire dump wire clamp, stockbridge damper chuck, share, make moving bending strain everywhere all unlikely excessive, in safe operation can tolerance range.The utility model adopts stockbridge damper to add the mode of damping wire, and by damping wire is carried out to delamination, length is arranged in pairs or groups, and stockbridge damper is rationally placed to the measure of grade, controls and moves bending strain within the scope of permissible value, accomplishes the full rate covering protection to wire aeolian vibration.
Accompanying drawing explanation
Fig. 1 is that the wire of having applied anti-vibrating system of the present utility model is crossed over the schematic diagram of shelves vibrationproof scheme.
Fig. 2 is the schematic diagram of having applied the wire tension-resistant shelves vibrationproof scheme of anti-vibrating system of the present utility model.
Embodiment
In context of the present utility model, described " ultra high voltage " refer to ± electric pressure of 800 kilovolts and above direct current and 1000 kilovolts and above alternating current.More than described " crossing over greatly " refers to span 1000m, more than straight line crossover tower tower height 100m, there is navigation requirement, need the power transmission sequence of particular design to become large leap power transmission engineering (being called for short " crossing over greatly ").According to the regulation of standard GB/T/T1179-2008, described " extra-heavy steel core high strength alumin ium alloy wire " refers to the wire being combined by Extra High Strength galvanized steel wire and high-strength aluminum alloy line." Extra High Strength galvanized steel wire " herein refers to the Extra High Strength galvanized steel wire that meets standard GB/T/T3428-2002 regulation performance, and " high-strength aluminum alloy line " herein refers to the LHA1 type high-strength aluminum alloy line that meets standard GB/T/T23308-2009 regulation performance.Described " anti-vibrating system " refers to the vibration protection that prevents aeolian vibration.
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that following examples are only not used in restriction scope of the present utility model for the utility model is described.
Embodiment 1
Fig. 1 is that the wire of having applied anti-vibrating system of the present utility model is crossed over the schematic diagram of shelves vibrationproof scheme.This scheme is by phase electrical wiring system being carried out to the vibrationproof scheme that analog vibration test optimizes.As shown in Figure 1, the anti-vibrating system 1 of wire of the present utility model is for carrying out vibrationproof to wire 10, at this, adopted AACSR/EST-720/320 extra-heavy steel core high strength alumin ium alloy wire, but in actual applications, also can adopt other wires, this anti-vibrating system 1 comprises: damping wire 20, stockbridge damper 30 and protect lines 40.In anti-vibrating system 1, adopt stockbridge damper to add damping wire combine vibration protection, take damping wire as main, stockbridge damper is auxiliary, and short lace is carried out to delamination processing, the damping wire lace collocation of different length is used and is accomplished the full rate covering protection to wire aeolian vibration.
Employing bending stiffness is little, is easy to the JL/G3A-900/40 steel reinforced aluminium conductor of resonance as damping wire 20, according to different weakening frequency ranges, adopts delamination method to change resonance frequency.The lace of damping wire 20 from short to long, from shelves in the distolateral layout of side direction shelves.The length of the lace of damping wire while arranging damping wire 20 has been shown in Fig. 1, wherein, L1=1.0m, L2=1.1m, L3=1.2m, L4=1.3m, L5=1.4m, L6=1.5m, L7=1.6m, L8=1.7m, L9=1.8m, L10=1.9m, L11=2.1m, L12=2.2m, L13=2.4m, L14=2.7m, L15=3.0m, L16=3.5m, L17=4.1m.Lace to above-mentioned L1～L3 place is shelled two layers of processing, the lace at above-mentioned L4～L7 place is shelled to one deck and process, and the lace at above-mentioned L8～L17 place is not carried out to delamination processing.Above-mentioned layout distance is only example, in concrete engineering, can make suitable adjustment, as long as meet lace from being short to the condition of growing and short lace being carried out to delamination.The wire clamp of damping wire 20 adopts aluminum alloy materials, and the design of surface curvature radius meets anticorona requirement.
The local frequency of the damping wire 20 of above-mentioned layout there will be weak link, by the deficiency that is arranged on stockbridge damper 30 in the long lace in damping wire 20 inner sides (shelves distolateral) and supplements 20 pairs of LF-response of damping wire.At this, adopted energy-saving stockbridge damper as stockbridge damper 30, chuck adopts aluminum alloy materials, adopts tuning-fork type tup, and tup is arranged symmetrically with.
At each clamping point, be wound around and protect lines 40, increase electric wire rigidity, suppress aeolian vibration intensity.As shown in Figure 1, clamping point has comprised wire clamp outlet and the point of stockbridge damper 30 has been installed, arranged that altogether 20 are protected lines 40.The material that protects lines 40 adopts LF-10 aluminum-alloy wire, and end is smooth Duckbill type.
Embodiment 2
Fig. 2 is the schematic diagram of having applied the wire tension-resistant shelves vibrationproof scheme of anti-vibrating system of the present utility model.In Fig. 2, the part with identical in Fig. 1 is adopted to identical drawing reference numeral.Fig. 2 shows the method for arranging of the another kind of lace of damping wire 20, wherein, and L18=1.1m, L19=1.3m, L20=1.5m, L21=1.8m, L22=2.1m, L23=2.4m, L24=2.7m, L25=3.3m.The lace at above-mentioned L18～L20 place is shelled to one deck and process, the lace at above-mentioned L21～L25 place is not carried out to delamination processing.Above-mentioned layout distance is only example, in concrete engineering, can make suitable adjustment, as long as meet lace from being short to the condition of growing and short lace being carried out to delamination.In the vibrationproof scheme shown in Fig. 2, arrange that altogether 10 are protected lines 40.
After tested, adopt stockbridge damper to add damping wire, damping wire is carried out to reasonably combined in delamination and length, stockbridge damper is rationally placed, and by the utility model that analog vibration is tested preferred vibrationproof scheme, can be used for the vibrationproof of the AACSR/EST-720/320 extra-heavy steel core high strength alumin ium alloy wire under crossing span 1931m, solved large span, conductor cross-section is large, in the large situation of the stress of conductor, moving bending strain exceeds the problem that allows standard value, prevent from, because aeolian vibration causes tired disconnected strand of wire, ensureing circuit safe and stable operation.。
In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read above-mentioned instruction content of the present utility model, these equivalent form of values fall within the application's appended claims limited range equally.
Reference numeral
1: anti-vibrating system
10: wire
20: damping wire
30: stockbridge damper
40: protect lines
Claims (10)
1. an anti-vibrating system for wire, is characterized in that, comprising:
Stockbridge damper, described stockbridge damper is assisted vibrationproof to described wire;
Damping wire has carried out the short lace that delamination processes and the long lace collocation of not carrying out delamination processing and has used described wire is carried out to main vibrationproof in described damping wire, and described stockbridge damper is installed in the long lace inside this damping wire; And
Protect lines, described in protect lines and be wrapped in clamping point,
In shelves, side direction shelves are distolateral arranges described damping wire from short lace to long lace.
2. the anti-vibrating system of wire as claimed in claim 1, is characterized in that,
Described damping wire adopts aluminum alloy materials.
3. the anti-vibrating system of wire as claimed in claim 2, is characterized in that,
Described aluminum alloy materials is steel reinforced aluminium conductor.
4. the anti-vibrating system of wire as claimed in claim 1, is characterized in that,
Described stockbridge damper is energy-saving stockbridge damper.
5. the anti-vibrating system of wire as claimed in claim 4, is characterized in that,
The chuck of described stockbridge damper adopts aluminum alloy materials.
6. the anti-vibrating system of wire as claimed in claim 5, is characterized in that,
Described stockbridge damper adopts tuning-fork type tup, and tup is arranged symmetrically with.
7. the anti-vibrating system of wire as claimed in claim 1, is characterized in that,
The described lines that protect adopt aluminum alloy materials.
8. the anti-vibrating system of wire as claimed in claim 7, is characterized in that,
The described end of protecting lines is smooth Duckbill type.
9. the anti-vibrating system of wire as claimed in claim 1, is characterized in that,
Described clamping point comprises wire clamp outlet and the point of described stockbridge damper is installed.
10. the anti-vibrating system of the wire as described in any one in claim 1～9, is characterized in that,
Described wire is the extra-heavy steel core high strength alumin ium alloy wire for the large overhead crossing engineering of extra high voltage direct current transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074220.4U CN203722177U (en) | 2014-02-13 | 2014-02-13 | Wire antivibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074220.4U CN203722177U (en) | 2014-02-13 | 2014-02-13 | Wire antivibration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203722177U true CN203722177U (en) | 2014-07-16 |
Family
ID=51161303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420074220.4U Expired - Fee Related CN203722177U (en) | 2014-02-13 | 2014-02-13 | Wire antivibration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203722177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852337A (en) * | 2014-02-13 | 2015-08-19 | 中国电力工程顾问集团公司 | Wire vibration-proof system |
-
2014
- 2014-02-13 CN CN201420074220.4U patent/CN203722177U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852337A (en) * | 2014-02-13 | 2015-08-19 | 中国电力工程顾问集团公司 | Wire vibration-proof system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER ENGINEERING CONSULTING GROUP CO., LTD. Free format text: FORMER NAME: CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100120 Beijing city Xicheng District No. 65 Andrew Patentee after: CHINA POWER ENGINEERING CONSULTING (Group) Corp. Patentee after: ELECTRIC POWER PLANNING & ENGINEERING INSTITUTE Patentee after: EAST CHINA ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: NORTHEAST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee after: NORTHWEST ELECTRIC POWER DESIGN INST. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: Southwest Electric Power Design Institute CO., Ltd. of China Power Engineering Consulting Group Patentee after: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Address before: 100120 Beijing city Xicheng District No. 65 Andrew Patentee before: CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: ELECTRIC POWER PLANNING & ENGINEERING INSTITUTE Patentee before: CHINA POWER ENGINEERING CONSULTING Group CORPORATION EAST CHINA ELECTRIC POWER DESIGN INSTITUTE Patentee before: NORTHEAST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Patentee before: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: NORTHWEST ELECTRIC POWER DESIGN INST. OF CHINA POWER ENGINEERING CONSULTING Group Patentee before: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |