CN202094582U - Vibration prevention device for alternating-current ultrahigh-voltage long-span lines - Google Patents
Vibration prevention device for alternating-current ultrahigh-voltage long-span lines Download PDFInfo
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- CN202094582U CN202094582U CN2010206901969U CN201020690196U CN202094582U CN 202094582 U CN202094582 U CN 202094582U CN 2010206901969 U CN2010206901969 U CN 2010206901969U CN 201020690196 U CN201020690196 U CN 201020690196U CN 202094582 U CN202094582 U CN 202094582U
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Abstract
The utility model relates to a vibration prevention device for alternating-current ultrahigh-voltage long-span lines, which is aimed at solving the problems that the dynamic bending strain exceeds an allowed standard value when the ultrahigh-voltage long-span lines are long in span, large in conductor section and large in conductor stress. A transmission line is fixed on an insulator hardware string of a tower by means of a line clamp and extends between two towers to form a block; the vibration prevention device for the transmission line comprises damping lines and at least one vibration prevention hammer, wherein the damping lines are fixed on the transmission line by means of a plurality of chucks from the end side of the block; the damping lines between every two adjacent chucks form a section of damping line lace; the length of each damping line lace is decreased gradually from the end side of the block to the middle side of the block; and the vibration prevention hammer is arranged on one or more sections of transmission lines from the end side of the block. Through the vibration prevention device, the dynamic bending strain of grounding lines generated by breeze vibration is effectively decreased, so that the allowed standard of the dynamic bending strain is satisfied, the fatigue breakage of the grounding lines due to long-time running is prevented and the safety stability of the ultrahigh-voltage lines is improved.
Description
Technical field
The utility model relates to the big span line of AC extra high voltage field, more particularly, relates to the big span line antihunting device of a kind of AC extra high voltage.
Background technology
Conductor vibration is to threaten transmission line, and especially big retaining is apart from the key factor of span line safe operation.Countries in the world work about electric power person is in the vibration mechanics characteristic of transmission line and prevent to have carried out on the countermeasure a large amount of theoretical researches and scientific experimentation.For striding river big retaining over strait apart from span line, the research of vibrationproof design for scheme is particularly important.
Oscillatory type has aeolian vibration, and inferior retaining is apart from the jump of vibrating, wave, deice, corona vibration, electromagnetic force vibration.What need suppress at big leap emphasis is that aeolian vibration, inferior retaining are apart from vibration with wave three kinds of patterns.
Inferior retaining is meant bundle conductor sub-conductor that the wake effect of wind causes in the vibration of inferior retaining apart from interior (two between conductor spacer) apart from vibration, and frequency is generally at 1～5Hz, and amplitude is generally 4～20 times of sub-conductor diameter.Inferior retaining apart from vibration by choosing enough lead heading spacings, reducing time retaining and can limit time retaining of lead apart from vibration apart from length, the measures such as distance of using damping conductor spacer to adjust conductor spacer by optimization principles.
Waving is significantly oscillation phenomenon of a kind of low frequency, ice, wind are the necessary conditions of its generation, its vibration frequency is usually at 0.1～3Hz, amplitude is about 5～300 times of diameter of wire, may 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 lead.Can take anti-ice cover, damping energy dissipating, take to resist measures such as waving design to come anti-dance.Do not wave the district if be not in, 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. just is installed, and the additional load of waving when the forethought lead is waved when design is pressed dynamic load checking computations fatigue strength to important coupling components.
Aeolian vibration is the most serious, the vibration pattern that need pay close attention to of harm in 3 kinds of vibration patterns, and is little at wind speed, under the uniform situation of wind speed, leads, ground wire often just produces aeolian vibration, and it is that a kind of high frequency slightly vibrates longer duration.After aeolian vibration occurring, the alternating bending distortion takes place in the suspension clamp exit, the line thigh adds dynamic bending stress again outside original various static force that are subjected to (bending stress of pulling force, wire clamp outlet, extrusion stress etc.), increase along with applied stress, electric wire self-damping decreased performance, owing to reason economically, the electric wire applied stress can not be obtained very little again, usually on the fatigue limit of electric wire own, so under the long term of moving bending strain, electric wire can occur tired disconnected strand, and mostly occurs in crossover tower suspension clamp exit.The scheme that the reply aeolian vibration is taked is by the phase electrical wiring system being carried out the analog vibration test, the preferred vibration protection that is suitable for.After vibration protection is installed, the major function of vibration-proof equipment is to cut down vibration wave to advance to the wire clamp outlet, originally can near the electric wire damping wire clamp, the stockbridge damper chuck, share at the bigger moving bending strain of wire clamp outlet, make that moving bending strain everywhere is all unlikely excessive, but in the safe operation tolerance range.
Antihunting device of the present utility model is the vibration protection that mainly prevents aeolian vibration.
The utility model content
For the big span line of ultra high voltage, diameter of wire is big, stress is high, and the retaining distance is big, and existing vibrationproof technical scheme all can not satisfy the vibrationproof requirement.The moving bending strain of lead wire and earth wire all exceeded the permission standard when prior art scheme was applied to the big span line of this ultra high voltage.
Therefore, a purpose of the present utility model is to solve the prior art scheme to be applied to the big retaining distance of the big span line of ultra high voltage, conductor cross-section is big, and moving bending strain exceeds the problem that allows standard value under the big situation of the stress of conductor, prevents tired disconnected strand of the lead wire and earth wire that causes because of aeolian vibration.
According to an aspect of the present utility model, designed a kind of transmission line antihunting device.Transmission line is fixed on by wire clamp on the insulator hardware string of shaft tower and stretches out from the port of export of wire clamp, extends to another shaft tower, and the transmission line that extends between the wire clamp of two shaft towers forms a retaining.The port of export of wire clamp is distolateral for retaining, and the central authorities of transmission line are side in the retaining.It is characterized in that this transmission line antihunting device comprises: distolaterally be fixed on damping wire on the transmission line by a plurality of chucks from keeping off, form one section damping wire lace between per two adjacent chucks, distolateral side is from large to small to the retaining from keeping off for the length of every section damping wire lace; Be installed in from keeping off at least one stockbridge damper on distolateral continuous one or more snippets transmission line.
According to above-mentioned aspect, fixed connection point place at suspension clamp, arbitrary section damping wire lace and any stockbridge damper and transmission line is equipped with the lines that protect that are wrapped on the transmission line, makes the chuck of suspension clamp, damping wire and stockbridge damper be fixed on the transmission line across protecting lines.
According to above-mentioned aspect, the damping wire lace can be the steel reinforced aluminium conductor that internal layer that the skin that is twisted into by multilayer aluminium single line and composite steel single line are twisted into constitutes.
According to above-mentioned aspect, all damping wire laces can be divided into many groups, every group comprises one or more snippets continuous damping wire lace, one group of distolateral damping wire lace of the most close retaining is not shelled layer, damping wire lace in all the other groups is shelled layer, and wherein the number of plies of being shelled near the damping wire lace in the distolateral group of retaining is less than the number of plies of being shelled near the damping wire lace in the group of side in the retaining.
In an example, all damping wire laces can be divided into three groups, every group comprises one or more snippets continuous damping wire lace, on the direction of side from keep off distolateral extremely retaining, first group of distolateral damping wire lace of the most close retaining do not shelled layer, the second group of damping wire lace that is close to first group shelled one deck, shelled two layers and be close to second group the 3rd group of damping wire lace.
In another example, all damping wire laces can be divided into two groups, and every group comprises one or more snippets continuous damping wire lace, and one group of distolateral damping wire lace of the most close retaining is not shelled layer, are shelled one deck near another group damping wire lace of side in the retaining.
According to above-mentioned aspect of the present utility model, with one section corresponding one section transmission line of damping wire lace on a stockbridge damper can only be installed.In addition, transmission line can be lead or ground wire, and a retaining of transmission line can be to cross over retaining or strain insulator retaining.
An effect of the present utility model is: can effectively reduce the moving bending strain that lead wire and earth wire produces because of aeolian vibration, satisfy the permission standard of moving bending strain, prevent the disconnected thigh of fatigue under the lead wire and earth wire long-play, improve the security and stability of extra high voltage line.
With reference to the detailed description of accompanying drawing to exemplary embodiment of the present utility model, it is clear that further feature of the present utility model and advantage thereof will become by following.
Description of drawings
The accompanying drawing that constitutes the part of specification has been described embodiment of the present utility model, and is used to explain principle of the present utility model together with the description.
With reference to accompanying drawing, according to following detailed, can be expressly understood the utility model more, wherein:
Fig. 1 is the schematic diagram of an example of the big leap transmission line of AC extra high voltage;
Fig. 2 is a schematic diagram of crossing over the retaining antihunting device according to the lead of an embodiment of the utility model;
Fig. 3 (a)-(c) illustrates lead shown in Figure 2 respectively to cross in the retaining antihunting device detail drawing of being shelled the damping wire lace of layer at 13#, 8# and 1# chuck place;
Fig. 4 is the schematic diagram according to the wire tension-resistant retaining antihunting device of an embodiment of the utility model;
Fig. 5 is a schematic diagram of crossing over the retaining antihunting device according to the ground wire of an embodiment of the utility model; And
Fig. 6 is the schematic diagram according to the ground wire strain insulator retaining antihunting device of an embodiment of the utility model.
Embodiment
Embodiment of the present utility model is described with reference to the accompanying drawings, and identical Reference numeral is represented identical parts in the accompanying drawing, thereby omits the description that repeats.
Fig. 1 is the schematic diagram of an example of the big leap transmission line 100 of AC extra high voltage.The big leap transmission line 100 of AC extra high voltage comprises two crossover towers 101 and two strain towers 102.Crossover tower 101 is positioned at big span line and (for example crosses over retaining, the big retaining distance of 1815 meters river surfaces of leap) two ends, strain tower 102 is positioned at crossover tower one side separately, highly is lower than crossover tower, is common line (non-big span line) shaft tower (not shown) at the opposite side of strain tower 102.Transmission line can comprise lead and ground wire, is fixed on by wire clamp on the insulator hardware string of crossover tower 101, strain tower 102 or common shaft tower (not shown).Wire clamp on the crossover tower 101 is called as suspension clamp 103, and the wire clamp on the strain tower then is called as strain clamp 104.The suspension clamp 103 of fixing cord and ground wire can be different, and the strain clamp 104 of fixing cord and ground wire also can be different, but represent with identical Reference numeral for diagram is convenient in this article.Note; at the fixed connection point place of each wire clamp (except the lead wire and earth wire strain clamp) and transmission line and the wire clamp exit all on transmission line, twine one section and (for example protect lines; protecting lines can be that preformed armor rods protects lines); be used to increase circuit rigidity; the protection lead wire and earth wire prevents because of tired disconnected strand of aeolian vibration.
Transmission line on shaft tower from the port of export of wire clamp (for example, this port of export be wire clamp protect the lines outlet) stretch out, extend to another shaft tower.The transmission line that extends between the corresponding wire clamp of two shaft towers forms a retaining.For example, lead between two crossover towers 101 is called as lead and crosses over retaining 105, ground wire between two crossover towers 101 is called as ground wire and crosses over retaining 106, lead between crossover tower 101 and the strain tower 102 is called as wire tension-resistant retaining 107, and the ground wire between crossover tower 101 and the strain tower 102 is called as ground wire strain insulator retaining 108.In this article, it is distolateral that the port of export of wire clamp is called as retaining, and the central authorities of transmission line are called as side in the retaining.
Fig. 2 is a schematic diagram of crossing over the retaining antihunting device according to the lead of an embodiment of the utility model.Only show among the figure lead cross over retaining 105 a part but not all.Need antihunting device be set whole process on whole retaining distance in lead leap retaining 105, from keeping off one section distolateral circuit antihunting device be set usually, its length is decided according to actual requirement of engineering.As shown in Figure 2, lead stretches out from the port of export 206 of the suspension clamp 103 of crossover tower 101, and the port of export 206 herein (that is, retaining is distolateral) for example protects the lines outlet for suspension clamp.Distolaterally a continuous damping wire 202 is fixed on the lead 201 from keeping off by a plurality of chucks 203.Each chuck 203 1 end is fixed on the lead across protecting lines 204, and the other end is fixed on the damping wire, and chuck 203 can be separate with damping wire.Damping wire 202 between per two adjacent chucks 203 forms one section damping wire lace, and distolateral side is from large to small to the retaining from keeping off for the length of every section damping wire lace.Because the length of every section damping wire lace is approximately equal to the length of two leads between the chuck 203, so the length of that separate by 203 1 sections one section of chuck, as to be provided with the damping wire lace every section lead also is that distolateral side is from large to small to the retaining from keeping off.An example of each section lead length has been shown among Fig. 2.Chuck 203 from retaining side to keeping off under the distolateral situation that is numbered as 1#-17# successively, for example, the length of the section lead between the 1#-2# chuck is 1.0m, and the length of the every section lead behind the 2# chuck is followed successively by 1.1m, 1.2m, 1.3m, 1.4m, 1.5m, 1.6m, 1.7m, 1.8m, 2.0m, 2.2m, 2.4m, 2.6m, 2.9m, 3.2m, 3.6m.Be appreciated that the numerical value among the figure is illustrative, and not restrictive, as long as diminish gradually from the length of keeping off distolateral every section damping wire lace.The different length of damping wire lace depends on the different frequency of aeolian vibration, and the full rate covering protection of accomplishing the lead aeolian vibration is used in the damping wire lace collocation of different length.
In an embodiment of the present utility model, can also shell layer to short lace and handle, change its weakening frequency, further strengthen the full rate covering protection of damping wire to the lead aeolian vibration.Damping wire 202 can form by the multilayer single line is stranded, for example, can be the steel reinforced aluminium conductor that internal layer that the skin that is twisted into by multilayer aluminium single line and composite steel single line are twisted into constitutes, certainly, damping wire 202 also can be the multilayer line of other form, for example all aluminium alloy twisted wire.In an example, can adopt that bending stiffness is little, the LGJ-630/45 that is easy to resonance and LGJ-400/35 steel reinforced aluminium conductor be as the weakening damping wire.The principle that the stripping layer is handled for example can be: all damping wire laces are divided into many groups, every group comprises one or more snippets continuous damping wire lace, one group of distolateral long relatively damping wire lace of the most close retaining is not shelled layer, short relatively damping wire lace in all the other groups is shelled layer, and wherein the number of plies of being shelled near the longer damping wire lace in the distolateral group of retaining is less than near the shorter damping wire lace in the group of side in the retaining.With Fig. 2 is example, and the damping wire lace between 17# to the 13# chuck is divided into first group of 207, the damping wire lace between 13# to the 8# chuck and is divided into second group of 208, the damping wire lace between 8# to the 1# chuck and is divided into the 3rd group 209.Each section damping wire lace in first group 207 is not by the stripping layer, and second group of 208 interior each section damping wire lace shelled one deck, and the 3rd group of 209 interior damping wire lace shelled two layers.
In addition, even damping wire 202 has been installed, local frequency also weak link may occur, thereby can replenish the deficiency of damping wire to LF-response by the stockbridge damper 205 that is installed in the big lace in damping wire inboard (keeping off distolateral).In the present embodiment, can stockbridge damper 205 be installed from keeping off distolateral one or more snippets continuous transmission line (each section transmission line separates by chuck), for example, each section can only be installed a stockbridge damper 205.These stockbridge dampers 205 also are to be fixed on the transmission line across protecting lines 204.In an example, can between 16#-17# and #15-#16, adopt FD-6/49 type stockbridge damper 205, and between 14#-15# and #13-#14, adopt FD-5/49 type stockbridge damper 205.By stockbridge damper 205 is installed in the big lace of damping wire inboard (keeping off distolateral), in the time of can avoiding stockbridge damper to be installed in the damping wire outside (side in the retaining) to a large amount of reflections of high frequency waves, allow lace trimming bring into play weakening effect preferably, can also allow stockbridge damper replenish the deficiency of damping wire to LF-response, save the use of big lace, reduction procedure is improved the exit microstrain of lead (or ground wire) wire clamp simultaneously.
Fig. 3 (a)-(c) illustrates lead shown in Figure 2 respectively to cross in the retaining antihunting device detail drawing of being shelled the damping wire lace of layer at 13#, 8# and 1# chuck place.As can be seen from Figure 3, at 13# chuck 203 places shown in (a), the damping wire lace of not shelling layer stretches out l from this chuck side to retaining
1Shelled one deck behind the=10mm.At 8# chuck 203 places shown in (b), the damping wire lace of being shelled one deck stretches out l from this chuck side to retaining
2Shelled two layers behind the=10mm.At 1# chuck 203 places shown in (c), the damping wire lace of being shelled two layers stretches out l from this chuck side to retaining
3End behind=the 10mm.
Fig. 4 is the schematic diagram according to the wire tension-resistant retaining antihunting device of an embodiment of the utility model.Wire tension-resistant retaining 107 is fixed between the strain clamp 104 of the suspension clamp 103 of crossover tower 101 and strain tower 102.Can arrange antihunting device near the either side of suspension clamp 103 or strain clamp 104, but antihunting device needn't spread on the whole strain insulator retaining 107.Protect lines (or strain clamp) outlet 406 from suspension clamp shown in Fig. 4 and begin to arrange antihunting device.The design philosophy of wire tension-resistant retaining antihunting device and lead are crossed over retaining antihunting device basically identical, but the length of the quantity of damping wire lace and grouping situation, every section damping wire lace, the type of stockbridge damper and quantity, the processing of stripping layer etc. all might be different, and this all is in order to satisfy the vibrationproof needs of actual engineering.For example, the length that begins each section damping wire lace from the 1# chuck among Fig. 4 can be 0.9m, 1.1m, 1.2m, 1.3m, 1.4m, 1.5m, 1.6m, 1.7m, 1.8m, 1.9m, 2.3m.In addition, the damping wire lace among Fig. 4 can only divide 2 groups, and the distolateral one group of damping wire lace (12#-6#) 407 of the most close retaining is not shelled layer, near another group damping wire lace (6#-1#) 408 quilt stripping one decks of side in the retaining.In addition, the stockbridge damper 205 here has only 2, can adopt FD-6/49 type stockbridge damper 205 between 11#-12#, and adopts FD-5/49 type stockbridge damper 205 between 10#-11#.
Fig. 5 is a schematic diagram of crossing over the retaining antihunting device according to the ground wire of an embodiment of the utility model, and Fig. 6 is the schematic diagram according to the ground wire strain insulator retaining antihunting device of an embodiment of the utility model.The design philosophy of these antihunting devices is also basic identical, but in order to satisfy the vibrationproof needs of actual engineering, the length of the quantity of damping wire lace and grouping situation, every section damping wire lace, the type of stockbridge damper and quantity, the processing of stripping layer etc. all might be different.For example, protecting lines from suspension clamp in Fig. 5 exports 506 and begins to arrange antihunting device, the length that begins each section damping wire lace from the 1# chuck can be 0.8m, 0.8m, 0.9m, 0.9m, 1.1m, 1.2m, 1.4m, 1.8m, 2.0m, 2.0m, 2.3m, 2.7m and 3.1m, and these numerical value are exemplary.In Fig. 6, protect lines (or strain clamp) outlet 606 and begin to arrange antihunting device from suspension clamp, the length that begins each section damping wire lace from the 1# chuck can be 0.9m, 1.2m, 1.5m, 1.8m, 2.0m, 2.3m, 2.6m and 3.0m, and these numerical value are exemplary.Can see that from Fig. 5 and 6 arbitrary antihunting device all comprises two groups of damping wire laces, respectively not by stripping layer (distolateral) with by stripping one deck (near side in the retaining) near retaining.Being that the boundary is divided into two groups with the 6# chuck in Fig. 5, is that the boundary is divided into two groups with the 4# chuck in Fig. 6.All be provided with two stockbridge dampers 205 in addition, be fixed in two sections the longest laces.For example, in Fig. 5, between 13#-14#, be provided with FRW-4/35 type stockbridge damper, between 12#-13#, be provided with FRW-3/35 type stockbridge damper; Be provided with FRW-4/35 type stockbridge damper in Fig. 6, be provided with FRW-3/35 type stockbridge damper between 8#-9# between 7#-8#, above model just illustrates, rather than restrictive.
Vibrationproof scheme of the present utility model can satisfy the moving bending strain standard scale allowable of following cited lead wire and earth wire.
| Lead ground wire type | Moving bending strain standard allowable |
| Aluminium alloy conductors steel | ±100με～±120με |
| Aluminum-cladding stranded wire | ±120με～±150με |
| Aluminium alloy conductors steel conductor spacer exit | ±75με |
As mentioned above, the utility model adopts damping wire to add stockbridge damper associating vibrationproof, and based on damping wire, stockbridge damper is auxilliary.Damping wire is by the collocation of the lace of different length, the damping wire lace from short to long, side direction is kept off distolateral layout in the self catcher, short lace is shelled layer handle and change its resonance frequency, makes damping wire accomplish full rate covering protection to the lead aeolian vibration.Stockbridge damper is installed in the big lace of damping wire inboard (keeping off distolateral), when avoiding stockbridge damper to be installed in the damping wire outside (side in the retaining) to a large amount of reflections of high frequency waves, allow lace trimming bring into play weakening effect preferably, can also allow stockbridge damper replenish the deficiency of damping wire to LF-response, save the use of big lace, reduction procedure is improved the exit microstrain of lead wire and earth wire suspension clamp simultaneously.In addition, lines are protected in winding in the wire clamp exit, increase electric wire rigidity, suppress aeolian vibration intensity.By above antihunting device, can effectively reduce the moving bending strain that lead wire and earth wire produces because of aeolian vibration, satisfy the permission standard of moving bending strain, prevent the disconnected thigh of fatigue under the lead wire and earth wire long-play, improve the security and stability of extra high voltage line.
The utility model also is applicable to the transmission line between the shaft tower of other type, not necessarily is confined to big span line and crosses over retaining or the such circuit of strain insulator retaining.
In the description here, any concrete numerical value should be construed as merely exemplary, rather than restrictive.Therefore, other example of exemplary embodiment can have different values.
Notice that embodiment of the present utility model is not limited to the foregoing description, but can carry out various modifications and do not break away from essence of the present utility model.It will be appreciated by those skilled in the art that and depend on that various modifications, combination, sub-portfolio and change can take place for design requirement and other factors, as long as these modifications, combination, sub-portfolio and change are in the scope of claimed theme and equivalent thereof.
Claims (8)
1. big span line antihunting device of AC extra high voltage, transmission line is fixed on by wire clamp on the insulator hardware string of shaft tower and stretches out from the port of export of wire clamp, extend to another shaft tower, the transmission line that extends between the wire clamp of two shaft towers forms a retaining, the port of export of wire clamp is distolateral for retaining, the central authorities of transmission line are side in the retaining, it is characterized in that the big span line antihunting device of this AC extra high voltage comprises:
Distolaterally be fixed on damping wire on the transmission line by a plurality of chucks from keeping off, the damping wire between per two adjacent chucks forms one section damping wire lace, and distolateral side is from large to small to the retaining from keeping off for the length of every section damping wire lace; With
Be installed in from keeping off at least one stockbridge damper on distolateral continuous one or more snippets transmission line.
2. the big span line antihunting device of AC extra high voltage as claimed in claim 1, it is characterized in that: the fixed connection point place at suspension clamp, arbitrary section damping wire lace and any stockbridge damper and transmission line all is provided with the lines that protect that are wrapped on the transmission line, makes suspension clamp, chuck and stockbridge damper be fixed on the transmission line across protecting lines.
3. the big span line antihunting device of AC extra high voltage as claimed in claim 1 is characterized in that: described damping wire is the steel reinforced aluminium conductor that internal layer that the skin that is twisted into by multilayer aluminium single line and composite steel single line are twisted into constitutes.
4. as claim 1 or the big span line antihunting device of 3 described AC extra high voltage, it is characterized in that: all damping wire laces are divided into many groups, every group comprises one or more snippets continuous damping wire lace, one group of distolateral damping wire lace of the most close retaining is not shelled layer, damping wire lace in all the other groups is shelled layer, and wherein the number of plies of being shelled near the damping wire lace in the distolateral group of retaining is less than the number of plies of being shelled near the damping wire lace in the group of side in the retaining.
5. as claim 1 or the big span line antihunting device of 3 described AC extra high voltage, it is characterized in that: all damping wire laces are divided into three groups, every group comprises one or more snippets continuous damping wire lace, on the direction of side from keep off distolateral extremely retaining, first group of distolateral damping wire lace of the most close retaining do not shelled layer, the second group of damping wire lace that is close to first group shelled one deck, shelled two layers and be close to second group the 3rd group of damping wire lace.
6. as claim 1 or the big span line antihunting device of 3 described AC extra high voltage, it is characterized in that: all damping wire laces are divided into two groups, every group comprises one or more snippets continuous damping wire lace, one group of distolateral damping wire lace of the most close retaining is not shelled layer, is shelled one deck near another group damping wire lace of side in the retaining.
7. the big span line antihunting device of AC extra high voltage as claimed in claim 1 is characterized in that: with one section corresponding one section transmission line of damping wire lace on a stockbridge damper only is installed.
8. the big span line antihunting device of AC extra high voltage as claimed in claim 1 is characterized in that described transmission line is lead or ground wire, and a described retaining is crossed over retaining or strain insulator retaining for big span line.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206901969U CN202094582U (en) | 2010-12-30 | 2010-12-30 | Vibration prevention device for alternating-current ultrahigh-voltage long-span lines |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206901969U CN202094582U (en) | 2010-12-30 | 2010-12-30 | Vibration prevention device for alternating-current ultrahigh-voltage long-span lines |
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| CN202094582U true CN202094582U (en) | 2011-12-28 |
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| 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 |
-
2010
- 2010-12-30 CN CN2010206901969U patent/CN202094582U/en not_active Expired - Lifetime
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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Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Co., Ltd of Huabei Power Design Inst., China Power Engineering Consulting Group Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: Huabei Power Design Inst., China Power Engineering Consulting Group |
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Granted publication date: 20111228 |