CN105720541A - V-shaped damping-wire clamp damping wire - Google Patents
V-shaped damping-wire clamp damping wire Download PDFInfo
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- CN105720541A CN105720541A CN201410734295.5A CN201410734295A CN105720541A CN 105720541 A CN105720541 A CN 105720541A CN 201410734295 A CN201410734295 A CN 201410734295A CN 105720541 A CN105720541 A CN 105720541A
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Abstract
The invention provides a V-shaped damping-wire clamp damping wire, and the damping wire is used for preventing a large-span and high-tension overhead line in a large-span overhead line from vibrating because of breeze. The improvement lies in that the damping wire comprises damping-wire clamps disposed on the overhead line at intervals; and the damping wires are disposed between the damping-wire clamps. Compared with the prior art, the damping wire achieves the stable holding of a wire, and protects the wire from being damaged or broken because of overlarge pressure. The damping wire can meet the requirements for the low-frequency, intermediate-frequency and high-frequency vibration prevention of a wire/ground line/OPGW in 35kV power transmission line, especially a UHV transmission line. The damping wire is wide in range of vibration prevention frequency, remarkably reduces the energy consumption, and is outstanding in vibration prevention effect.
Description
Technical field
The present invention relates to a kind of damping wire, be used for preventing the V-arrangement dump wire clamp damping wire of overhead transmission line conductor/ground wire/OPGW aeolian vibration in particular to one.
Background technology
Aeolian vibration is one of the key factor threatening UHV transmission line safe operation, is circuit design, builds and problem that operating management department must be paid much attention to.Long aeolian vibration is easily caused the damage of each ingredient of transmission line of electricity (lead wire and earth wire, gold utensil etc.) and even lost efficacy, the safe operation of serious threat transmission line of electricity.Therefore, it is necessary to adopt an effective measure to leading () aeolian vibration of line and OPGW prevented and treated.Lead () line, OPGW vibrationproof be typically based on the factors such as vibration mode, genesis mechanism, vibration characteristic, select and suitable antihunting device be installed to realize.
Aerial line aeolian vibration is a kind of by wind-induced main vibratory overhead line in vertical direction, and its frequency of vibration is 3～120Hz, and amplitude is the order of magnitude of aerial line diameter.Cause the wind speed of this vibration generally in the scope of 0.5～10m/s, therefore be called aeolian vibration.Exceed the generation allowing the aeolian vibration of amplitude to be easily caused the disconnected stock of aerial line fatigue, gold utensil and the phenomenon such as shaft tower component wear or fatigue rupture, even cause the line-outage contingency of aerial line, the safe operation of serious threat transmission line of electricity.
The disconnected stock of the vibrating fatigue of aerial line is the result of jitter accumulation effect, and the oscillation intensity of aerial line generally all uses bending strain to weigh.Generally, it is considered that when strain is less than certain certain numerical value, disconnected stock will not occur aerial line within the whole cycle in service life, this numerical value is exactly dynamic bending strain feasible value.
Antihunting device is exclusively for preventing aeolian vibration from causing wire fatigue to break stock, and a kind of antivibrating parts installed on wire.The vibrationproof principle of most of antihunting devices is to convert vibrational energy into heat energy or acoustic energy and disperse, thus reducing the amplitude of wire.Also having some antihunting devices is the purpose being reached vibrationproof by increase conductor rigidity or raising lead wire damping effect.Conventional antihunting device mainly has damper, protects lines, damping wire, spiral vibration rod etc., and wherein, damper has multiple pattern.
Great span vibrationproof Long distance river-crossing transmission project is the important component part of circuit, there is the features such as span is big, hitch point is high, the leap water surface is open, water surface overhead easily forms laminar winds, cause the wind speed range that lead wire and earth wire is vibrated wider, the wind energy that lead wire and earth wire absorbs is much bigger compared with common line, its level of vibration is also significantly larger than common line, and lead wire and earth wire is almost all the time all in vibration.Therefore, Great span lead wire and earth wire antihunting device is usually relatively complex, it is necessary to specializes in and designs.
One, Great span vibrationproof version；The vibrationproof scheme of large-span conductors mainly has the patterns such as the combination of Bate damping wire, Bate damping wire+damper, double; two Bate damping wire, cross dump wire, damper, Christmas tree damping wire.The feature of various vibrationproof schemes is as shown in table 1, and the ultimate principle of these antihunting devices is all the vibration mode changing wire, by the vibrational energy of the vibration consumption system of self, thus reducing the aeolian vibration level of wire.Wherein, the vibrationproof scheme of Bate damping wire and damper combination is most widely used in China.
Table 1: Great span vibrationproof Scheme Characteristics and application
Two, the method for designing of Great span vibrationproof scheme；Owing to aeolian vibration belongs to very strong nonlinear problem, adding wire dispersibility in performance, simple theory analysis and calculating deficiency and accurately determine the vibrationproof scheme of wire, final vibrationproof scheme should be determined by simulation test.The purpose of vibrationproof test is through testing preferably to go out to meet the vibrationproof scheme that technology requires, the aeolian vibration level of lead wire and earth wire is dropped to below strain tolerant, and the disconnected stock market affairs event that aeolian vibration causes will not occur in making lead wire and earth wire during whole service life.Vibrationproof test mainly includes the content of the following aspects.
1, self-damping test；The self-damping of wire is to weigh the ability of material autophage energy, and relevant with the material of wire, structure, stranded tightness degree, tension force etc., the self-damping between different conductor differs greatly, it is necessary to pass through test determination.Self-damping feature test adopts power method, and the frequency range of measurement covers the frequency range of aeolian vibration.By self-damping test data being processed the formula obtaining self-damping, provide foundation for calculating oscillation intensity.
2, damper attribute testing；Damper, as anti-vibration element, consumes the energy of wind input lead mainly by friction between the stock of its steel strand wires, thus reducing the level of vibration of wire.The main purpose of damper attribute testing is the resonant frequency recording damper and the power consumption level under each resonant frequency thereof, provides foundation for vibrationproof conceptual design.
3, vibrationproof scheme test is with preferred；Vibrationproof scheme adopts the combine vibration protection measure of Bate damping wire+damper.The frequency response range of consideration different length damping wire lace, the combination of vibrationproof Scheme Choice different length lace so that it is be respectively provided with good passive energy dissipation effect in whole aeolian vibration frequency range, and to predominant oscillatory frequencies scope key protection.In shelves, side (outside) lace trimming carries out delamination process, can alleviate the weight of outside lace on the one hand, reduces the dynamic bending strain value of lace wire clamp place wire, can change the response frequency of this lace on the other hand, improve the Frequency Response of vibrationproof scheme.Damper is installed simultaneously in big lace and strengthens vibrationproof scheme low frequency vibration-isolating effect, whole vibrationproof scheme performance can be made to reach the best by damper and being used in combination of damping wire.The scheme that just sets to carry out test on test shelves and to improve, and finally recommends engineering than preferably scheme of selecting and uses.The vibrationproof scheme of split conductor also needs to carry out inspection test on split conductor.
4, aeolian vibration scene vibration measuring；The aeolian vibration of actual track can not be completely consistent with simulation laboratory test, for understanding the aeolian vibration level of wire, and the effect of inspection antihunting device, it is necessary to the aeolian vibration of wire is carried out field measurement.On-the-spot vibration measuring carries out after circuit puts into operation, vialog is installed at main clamping some place, monitors certain time continuously, obtain the aeolian vibration data in the vibration measuring cycle, by data being processed the level obtaining wire aeolian vibration, it is determined that whether wire aeolian vibration is in permissible range.
Rapid development stage, the popularization and application of the series of new techniques such as transregional inter-network, remote, large capacity transmission and large-section lead are stepped in current stage China's extra-high voltage construction, and transmission line of electricity aeolian vibration is proposed higher, tighter requirement.The needs fast-developing for being suitable for extra-high voltage grid, are improved tradition Great span vibrationproof scheme and renewal are seemed very urgent and necessary.
Summary of the invention
In order to solve the problems referred to above, the invention provides a kind of V-arrangement dump wire clamp damping wire, lightweight and can elastic rotation thus effectively consuming energy, the advantage that existing Bate damping wire covering frequence is wide, the vibrational energy consuming aeolian vibration can be disperseed again in a swing fashion, achieve better vibration-isolating effect.
It is an object of the invention to adopt following technical proposals to realize:
A kind of V-arrangement dump wire clamp damping wire provided by the invention, described V-arrangement dump wire clamp damping wire is for preventing big span in Great span overhead transmission line, high-tension aerial line 2 from vibrating because of mild wind, and it thes improvement is that: described V-arrangement dump wire clamp damping wire includes the dump wire clamp 1 being disposed on described aerial line 2；Between described dump wire clamp 1, damping wire 3 is set.
Wherein, described dump wire clamp 1 is " V " shape, including being arranged on conplane wire clip body 1 and wire clip body 2 106；The link of described wire clip body 1 and wire clip body 2 106 is respectively provided with the flange bolt 101 and cross axle 109 that are mutually matched.
Wherein, the angle of described wire clip body 1 and wire clip body 2 106 is 102 °.
Wherein, the gap of described cross axle 109 arranges rubber column 108.
Wherein, the end of described wire clip body 1 and wire clip body 2 106 is respectively provided with wire clamp chuck 1 and wire clamp chuck 2 111；Described wire clamp chuck 1 and wire clamp chuck 2 111 are respectively provided with wire clamp gland 1 and wire clamp gland 2 105.
Wherein, between described wire clamp chuck 1 and wire clamp gland 1, between described wire clamp chuck 2 111 and wire clamp gland 2 105, it is respectively provided with rubber packing.
Wherein, described wire clamp chuck 1 and wire clamp chuck 2 111 are respectively provided with wire clamp joint pin and backing pin.
Wherein, described aerial line 2 and damping wire 3 are separately positioned in wire clamp chuck 1 and wire clamp chuck 2 111.
Wherein, described wire clamp chuck 2 111 is arranged on homonymy or the heteropleural of aerial line 2.
Wherein, described aerial line 2 is transmission line wire or ground wire or OPGW, and described aerial line 2 is fixedly installed in suspension clamp or the strain clamp of transmission line of electricity.
Wherein, described damping wire 3 is steel-cored aluminium strand or aluminium alloy stranded conductor or all aluminium stranded conductor.
Wherein, described damping wire 3 arranges stockbridge damper；Described stockbridge damper includes link plate and hammer body, and described link plate one end is connected with damping wire 3, and the other end is symmetrical arranged a pair hammer body.
Compared with the prior art, the present invention reaches to provide the benefit that:
1, V-arrangement dump wire clamp damping wire provided by the invention, the wire clamp of employing is stable to the gripping of aerial line, and avoids wire because of excessive and the impaired or disconnected stock of wire clamp pressure.
2, V-arrangement dump wire clamp damping wire provided by the invention, covering frequence is wide, and low frequency, intermediate frequency and high-frequency resonant all can play protective action.
3, V-arrangement dump wire clamp damping wire provided by the invention, lightweight and can elastic rotation thus effectively consuming energy, the advantage that existing Bate damping wire covering frequence is wide, again can disperse in a swing fashion consume aeolian vibration vibrational energy, achieve better vibration-isolating effect.
4, V-arrangement dump wire clamp damping wire provided by the invention, simple in construction, is easily installed maintenance, applied widely, has wide market prospect.
5, V-arrangement dump wire clamp damping wire provided by the invention, can select to adopt the damping wire of different lace length, to adapt to different resonant frequencies according to the self-damping feature of wire/ground wire/OPGW.
6, V-arrangement dump wire clamp damping wire provided by the invention, damping wire can suitable delamination, in shelves, side or outside lace trimming carry out delamination process, the weight of outside lace can be alleviated on the one hand, reduce lace wire clamp and go out the dynamic bending strain value of aerial line, the response frequency of this lace can be changed on the other hand, improve Frequency Response, reach better vibration-isolating effect.
7, V-arrangement dump wire clamp damping wire provided by the invention, installs damper in big lace damping wire central authorities and strengthens low frequency vibration-isolating effect, vibrationproof performance can be made more significantly by stockbridge damper and being used in combination of scale damping wire.
Accompanying drawing explanation
Fig. 1: V-arrangement dump wire clamp damping wire provided by the invention face structural representation；
Fig. 2: what the incorgruous heteropleural of dump wire clamp provided by the invention was installed looks up structural representation；
Fig. 3: what dump wire clamp provided by the invention homonymy in the same direction was installed looks up structural representation；
Fig. 4: the structural representation of dump wire clamp provided by the invention；
Fig. 5: the structural representation of the wire clip body two of dump wire clamp provided by the invention；
Wherein: 1, dump wire clamp；2, aerial line；3, damping wire；101, flange bolt；102, wire clip body one；103, wire clamp gland one；104, wire clamp joint pin；105, wire clamp gland two；106, wire clip body two；107, backing pin；108, rubber column；109, cross axle；110, wire clamp chuck one；111, wire clamp chuck two.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
The V-arrangement dump wire clamp damping wire that the embodiment of the present invention provides, big span, high-tension aerial line in Great span overhead transmission line vibrate because of mild wind, as shown in Figures 1 to 3, and including: dump wire clamp 1, aerial line 2 and damping wire 3.On aerial line 2, dump wire clamp 1 is installed at interval, hangs damping wire 3 on dump wire clamp 1；Aerial line 2 is transmission pressure or ground wire or OPGW, hangs by suspension clamp or strain clamp are fixing；Damping wire 3 is steel-cored aluminium strand or aluminium alloy stranded conductor or all aluminium stranded conductor, arranges stockbridge damper in damping wire 3；Stockbridge damper includes link plate and hammer body, and link plate one end is connected with damping wire 3, and the other end is symmetrical arranged a pair hammer body.
Dump wire clamp 1 is " V " shape, if Fig. 4 is to shown in 5, including: flange bolt 101, wire clip body 1, wire clamp gland 1, wire clamp joint pin 104, wire clamp gland 2 105, wire clip body 2 106, backing pin 107, rubber column 108, cross axle 109, wire clamp chuck 1, wire clamp chuck 2 111.Angle is the wire clip body 1 of 120 ° and wire clip body 2 106 is connected by flange bolt 101 and the cross axle 109 being mutually matched, and the gap of cross axle 109 arranges rubber column 108；Wire clamp chuck 1 with wire clamp chuck 2 111 are respectively provided with aerial line 2 and damping wire 3, and fastened by wire clamp joint pin 104 and backing pin 107, finally cover tightly with wire clamp gland 1 and wire clamp gland 2 105, between wire clamp chuck 1 and wire clamp gland 1, between wire clamp chuck 2 111 and wire clamp gland 2 105, it is respectively provided with rubber packing, improves the stability to aerial line 2 and the gripping of damping wire 3.
Dump wire clamp 1 is divided into two kinds of set-up modes；First kind of way, as in figure 2 it is shown, the incorgruous heteropleural of dump wire clamp 1 is installed, two namely adjacent wire clamp chucks 2 111 are positioned at the heteropleural of aerial line 2；The second way, as it is shown on figure 3, dump wire clamp 1 homonymy in the same direction is installed, two namely adjacent wire clamp chucks 2 111 are positioned at the homonymy of aerial line 2.
The vertical vibration power consumption of existing damping wire 3 itself during V-arrangement dump wire clamp damping wire vibration, the elastic damping around dump wire clamp 1 pin joint is had again to rotate, balance wheel such as stockbridge damper, when damping wire 3 is consistent with the resonant frequency of aerial line 2, damping wire 3 can with the pin joint of dump wire clamp 1 for the center of circle, swinging back and forth along certain angle direction, dissipation vibrational energy, thus reaching good vibration-isolating effect.
For reaching better vibration-isolating effect, damping wire 3 can suitable delamination, in shelves, side (outside) lace trimming carries out delamination process, the weight of outside lace can be alleviated on the one hand, reduce lace wire clamp and go out the dynamic bending strain value of aerial line, the response frequency of this lace can be changed on the other hand, improve the Frequency Response of vibrationproof.Additionally also in big lace central authorities, damper can be installed and strengthen low frequency vibration-isolating effect, vibrationproof performance can be made to reach the best by stockbridge damper and being used in combination of dump wire clamp 1.
Embodiment 1
First dump wire clamp 1 is installed on and exports on the aerial line 2 at 1m place from strain clamp, and dump wire clamp 1 is hung on aerial line 2 by wire clamp chuck 1, and is tightly locked on aerial line 2 by backing pin 107 with wire clamp gland 1；Second dump wire clamp 1 and first incorgruous heteropleural of dump wire clamp 1 are symmetrically installed, namely the wire clamp chuck 2 111 of first dump wire clamp 1 and second dump wire clamp 1 lays respectively at the both sides of aerial line 2, installs the 3rd V-arrangement dump wire clamp 1, the 4th V-arrangement dump wire clamp 1 etc. in this way successively；Finally, damping wire 3 is installed in wire clamp chuck 111, and with backing pin 107, wire clamp gland 2 105 is locked.
Embodiment 2
First dump wire clamp 1 is installed on and exports on the aerial line 2 at 1m place from strain clamp, and dump wire clamp 1 is hung on aerial line 2 by wire clamp chuck 1, and is tightly locked on aerial line 2 by backing pin 107 with wire clamp gland 1；Second dump wire clamp 1 and first dump wire clamp 1 homonymy in the same direction are symmetrically installed, namely the wire clamp chuck 2 111 of first dump wire clamp 1 and second dump wire clamp 1 is respectively positioned on the homonymy of aerial line 2, installs the 3rd V-arrangement dump wire clamp 1, the 4th V-arrangement dump wire clamp 1 etc. in this way successively；Finally, damping wire 3 is installed in wire clamp chuck 111, and with backing pin 107, wire clamp gland 2 105 is locked.
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit; those of ordinary skill in the field are to be understood that; the specific embodiment of the present invention can being modified with reference to above-described embodiment or equivalent replacement, these are all being applied within the claims awaited the reply without departing from any amendment or equivalent replacement of spirit and scope of the invention.
Claims (12)
1. a V-arrangement dump wire clamp damping wire, described V-arrangement dump wire clamp damping wire vibrates because of mild wind for preventing big span in Great span overhead transmission line, high-tension aerial line (2), it is characterised in that: described V-arrangement dump wire clamp damping wire includes the dump wire clamp (1) being disposed on described aerial line (2)；Damping wire (3) is set between described dump wire clamp (1).
2. V-arrangement dump wire clamp damping wire as claimed in claim 1, it is characterised in that described dump wire clamp (1) is " V " shape, including being arranged on conplane wire clip body one (102) and wire clip body two (106)；The link of described wire clip body one (102) and wire clip body two (106) is respectively provided with the flange bolt (101) and cross axle (109) that are mutually matched.
3. V-arrangement dump wire clamp damping wire as claimed in claim 2, it is characterised in that the angle of described wire clip body one (102) and wire clip body two (106) is 102 °.
4. V-arrangement dump wire clamp damping wire as claimed in claim 2, it is characterised in that the gap of described cross axle (109) arranges rubber column (108).
5. scale formula damping wire as claimed in claim 2, it is characterised in that the end of described wire clip body one (102) and wire clip body two (106) is respectively provided with wire clamp chuck one (110) and wire clamp chuck two (111)；Described wire clamp chuck one (110) and wire clamp chuck two (111) are respectively provided with wire clamp gland one (103) and wire clamp gland two (105).
6. V-arrangement dump wire clamp damping wire as claimed in claim 5, it is characterized in that, between described wire clamp chuck one (110) and wire clamp gland one (103), between described wire clamp chuck two (111) and wire clamp gland two (105), be respectively provided with rubber packing.
7. V-arrangement dump wire clamp damping wire as claimed in claim 6, it is characterised in that described wire clamp chuck one (110) and wire clamp chuck two (111) are respectively provided with wire clamp joint pin and backing pin.
8. V-arrangement dump wire clamp damping wire as claimed in claim 7, it is characterised in that described aerial line (2) and damping wire (3) are separately positioned in wire clamp chuck one (110) and wire clamp chuck two (111).
9. V-arrangement dump wire clamp damping wire as claimed in claim 8, it is characterised in that described wire clamp chuck two (111) is arranged on homonymy or the heteropleural of aerial line (2).
10. V-arrangement dump wire clamp damping wire as claimed in claim 1, it is characterized in that, described aerial line (2) is transmission line wire or ground wire or OPGW, and described aerial line (2) is fixedly installed in suspension clamp or the strain clamp of transmission line of electricity.
11. V-arrangement dump wire clamp damping wire as claimed in claim 1, it is characterised in that described damping wire (3) is steel-cored aluminium strand or aluminium alloy stranded conductor or all aluminium stranded conductor.
12. V-arrangement dump wire clamp damping wire as claimed in claim 1, it is characterised in that described damping wire (3) arranges stockbridge damper；Described stockbridge damper includes link plate and hammer body, and described link plate one end is connected with damping wire (3), and the other end is symmetrical arranged a pair hammer body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734295.5A CN105720541B (en) | 2014-12-04 | 2014-12-04 | A kind of V-arrangement dump wire clamp damping wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734295.5A CN105720541B (en) | 2014-12-04 | 2014-12-04 | A kind of V-arrangement dump wire clamp damping wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105720541A true CN105720541A (en) | 2016-06-29 |
| CN105720541B CN105720541B (en) | 2017-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410734295.5A Active CN105720541B (en) | 2014-12-04 | 2014-12-04 | A kind of V-arrangement dump wire clamp damping wire |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107623300A (en) * | 2017-10-13 | 2018-01-23 | 广东电网有限责任公司佛山供电局 | A kind of distribution network line joint vibrationproof damping unit |
| CN116706814A (en) * | 2023-07-31 | 2023-09-05 | 江东金具设备有限公司 | Damper and power transmission overhead line |
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2014
- 2014-12-04 CN CN201410734295.5A patent/CN105720541B/en active Active
Patent Citations (4)
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| CN101694932A (en) * | 2009-09-28 | 2010-04-14 | 孙渭清 | Rapid locking cable clamp |
| JP2012070521A (en) * | 2010-09-22 | 2012-04-05 | Tokyo Electric Power Co Inc:The | Bate damper |
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| CN107623300A (en) * | 2017-10-13 | 2018-01-23 | 广东电网有限责任公司佛山供电局 | A kind of distribution network line joint vibrationproof damping unit |
| CN116706814A (en) * | 2023-07-31 | 2023-09-05 | 江东金具设备有限公司 | Damper and power transmission overhead line |
| CN116706814B (en) * | 2023-07-31 | 2023-11-03 | 江东金具设备有限公司 | Damper and power transmission overhead line |
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