CN103915807B - A kind of wind-deviation flexible control device for transmission line of electricity - Google Patents
A kind of wind-deviation flexible control device for transmission line of electricity Download PDFInfo
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- CN103915807B CN103915807B CN201410150390.0A CN201410150390A CN103915807B CN 103915807 B CN103915807 B CN 103915807B CN 201410150390 A CN201410150390 A CN 201410150390A CN 103915807 B CN103915807 B CN 103915807B
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Abstract
The present invention relates to a kind of wind-deviation flexible control device for transmission line of electricity, compared with prior art solve the defect of the wind deflection preventive not having excellent effect.The present invention includes steel tower cross-arm and the wire suspension insulator being arranged on steel tower cross-arm, the other end of wire suspension insulator is provided with drop-down insulator chain assembly, the other end of drop-down insulator chain assembly is provided with bracing wire assembly, the other end of bracing wire assembly is provided with control assembly, control the pull-rod that assembly includes being arranged on bracing wire assembly, pull-rod is run through casing and is arranged on casing by the suspension of pull-rod projection, brake disc it is installed with in the middle part of pull-rod, the size of brake disc is more than casing, the lower end of pull-rod is provided with pouring weight, the surrounding of casing is installed with support bar respectively, the quantity of support bar is 4, support bar fixedly mounts on the ground.The present invention is better than installing additional the measure of weight, and the measure more directly changing steel tower is the most economical.
Description
Technical field
The present invention relates to the inclined technical field of power transmission line wind, a kind of wind-deviation flexible control device for transmission line of electricity.
Background technology
In recent years, along with the lasting change of amblent air temperature, extreme local strong convective weather is often occurring, often results in power transmission circuit caused by windage trip accident, affects electric power netting safe running.In order to solve circuit windage yaw trip problem, traditional wind-deviation control measures is to install a number of weight on suspension insulator additional, to increase the weight of insulator chain, thus reduce wire skew under high wind conditions, prevent live wire from iron tower construction member being discharged.This scheme is simple, easy construction, but owing to counterweight is limited, the effect of suppression wire windage yaw is not fine.Also have and then former circuit " I " string steel tower is replaced by three-phase " V " string steel tower, though this wind-deviation measure is the most effective control measures, if but be replaced on a large scale, cost is too big, the construction period is long.How to develop a kind of simple in construction, wind-deviation with low cost control device has become as urgent need and solves the technical problem that.
Summary of the invention
The invention aims to the defect solving do not have the wind deflection preventive of excellent effect in prior art, it is provided that a kind of wind-deviation flexible control device for transmission line of electricity solves the problems referred to above.
To achieve these goals, technical scheme is as follows:
A kind of wind-deviation flexible control device for transmission line of electricity, including steel tower cross-arm and the wire suspension insulator being arranged on steel tower cross-arm, the other end of wire suspension insulator is provided with drop-down insulator chain assembly, the other end of drop-down insulator chain assembly is provided with bracing wire assembly, the other end of bracing wire assembly is provided with control assembly, control the pull-rod that assembly includes being arranged on bracing wire assembly, pull-rod is run through casing and is arranged on casing by the suspension of pull-rod projection, brake disc it is installed with in the middle part of pull-rod, the size of brake disc is more than casing, the lower end of pull-rod is provided with pouring weight, the surrounding of casing is installed with support bar respectively, the quantity of support bar is 4, support bar fixedly mounts on the ground.
Described bracing wire assembly includes NUT wire clamp and lower NUT wire clamp, and the lower end of upper NUT wire clamp is provided with galvanized strand wires, and lower NUT wire clamp is installed in the lower end of galvanized strand wires, and lower NUT wire clamp is connected installation with the upper end of pull-rod.
Described drop-down insulator chain assembly includes the yoke plate installed with wire suspension insulator, U-shaped link is installed on yoke plate, upper U-shaped link by extend ring with in U-shaped link be connected installation, in U-shaped link by composite insulator with under U-shaped link be connected installation, under U-shaped link be arranged on the upper end of NUT wire clamp.
Described pull-rod projection is less than the pull-rod projection vertical dimension to ground to the vertical dimension of pouring weight.
Also including base, the quantity of base is 4, and base is located at support bar in the installation site on ground.
The distance on described steel tower cross-arm distance ground is 33 meters, a length of 5 meters of wire suspension insulator, and brake disc is arranged at 0.78 meter of distance casing.
Beneficial effect
A kind of wind-deviation flexible control device for transmission line of electricity of the present invention, is compared with prior art better than installing additional the measure of weight, and the measure more directly changing steel tower is the most economical.By arranging the range of activity of bracing wire assembly, controlling the gross weight of weight so that this device can play the effect of pilot insulator chain maximum angle of wind deflection, is avoided that again the additional load that bracing wire assembly produces is excessive, causes wire cross-arm to damage.Have the advantages that simple in construction, effect are notable, with low cost.
Accompanying drawing explanation
Fig. 1 is structural representation during resting state of the present invention
Fig. 2 is structural representation during strong wind state of the present invention
Fig. 3 is the structural front view controlling assembly of the present invention
Fig. 4 is the structure top view controlling assembly of the present invention
Fig. 5 is the structural front view of the drop-down insulator chain assembly of the present invention
Fig. 6 is the structural front view of the bracing wire assembly of the present invention
Wherein, 1-steel tower cross-arm, 2-wire suspension insulator, 3-drop-down insulator chain assembly, 4-bracing wire assembly, 5-control in assembly, 6-ground, the upper anti-formula wire clamp of 31-, 32-yoke plate, 33-hanging type wire clamp, the upper U-shaped link of 34-, 35-prolongation ring, 36-under U-shaped link, 37-composite insulator, 38-NUT wire clamp, 43-galvanized strand wires, 51-casing, 52-pull-rod, 53-support bar, 54-stull, 55-brake disc, 56-pouring weight, 57-base, 58-pull-rod projection under U-shaped link, 41-upper NUT wire clamp, 42-.
Detailed description of the invention
By making the architectural feature to the present invention and effect of being reached have a better understanding and awareness, coordinate detailed description in order to preferred embodiment and accompanying drawing, be described as follows:
As shown in Figure 1, a kind of wind-deviation flexible control device for transmission line of electricity of the present invention, including steel tower cross-arm 1 and the wire suspension insulator 2 being arranged on steel tower cross-arm 1, wire suspension insulator 2 is arranged on steel tower cross-arm 1 by connected mode of the prior art.The other end of wire suspension insulator 2 is provided with drop-down insulator chain assembly 3, and the other end of drop-down insulator chain assembly 3 is provided with bracing wire assembly 4, and bracing wire assembly 4 can increase the Flexible Control of wind-deviation when blowing.The other end of bracing wire assembly 4 is provided with control assembly 5, and control assembly 5 is used for the traction control when strong wind to wire suspension insulator 2.As shown in Figure 3 and Figure 4, controlling the pull-rod 52 that assembly 5 includes being arranged on bracing wire assembly 4, pull-rod 52 uses conventional means to be directly installed on lower NUT wire clamp 42, forms the connection controlled between assembly 5 and bracing wire assembly 4 and fixes.Pull-rod 52 is run through casing 51 and is arranged on casing 51 by protruding 58 suspensions of pull-rod, and pull-rod protruding 58 is the protrusion being arranged on pull-rod 52, and when pull-rod 52 is inserted into casing 51, protruding 58 gears of pull-rod are on casing 51, it is ensured that the casing 51 support to pull-rod 52.Being installed with brake disc 55 in the middle part of pull-rod 52, the size of brake disc 55 is more than casing 51, it is ensured that pull-rod 52 will not extract casing 51 out, thus defines the pull-rod 52 up and down motion on casing 51 in limited range by pull-rod protruding 58 and brake disc 55.Brake disc 55 may be mounted at the middle part of pull-rod 52, it is also possible to for middle and lower part, particular location needs with electric power pylon practical situation calmly according to site operation.The lower end of pull-rod 52 is provided with pouring weight 56, and pull-rod 52 is played drop-down effect by pouring weight 56, and draw to wire suspension insulator 2 when being also strong wind, the concrete weight of pouring weight 56 adjusts according to actual needs.The surrounding of casing 51 is installed with support bar 53 respectively, casing 51 is supported by support bar 53, and the quantity of support bar 53 can be 4, in four orientation being separately mounted to outside casing 51, support bar 53 is fixedly mounted on ground 6, defines the support to casing 51.
In order to preferably increase the Flexible Control of wind-deviation, as shown in Figure 6, bracing wire assembly 4 includes NUT wire clamp 41 and lower NUT wire clamp 42, the 3 times U-shaped links 38 in the upper end of upper NUT wire clamp 41 and drop-down insulator chain assembly are connected installation in the usual way, and the lower end of upper NUT wire clamp 41 is provided with galvanized strand wires 43.Lower NUT wire clamp 42 is installed in the lower end of galvanized strand wires 43, and lower NUT wire clamp 42 is arranged on the upper end of pull-rod 52, defines bracing wire assembly 4 and the connection controlling assembly 5.
In order to preferably coordinate transmission line of electricity to use, as shown in Figure 5, drop-down insulator chain assembly 3 includes the yoke plate 32 installed with wire suspension insulator 2, anti-formula wire clamp 31 and hanging type wire clamp 33 can be installed on yoke plate 32, U-shaped link 34 is installed in the middle part of yoke plate 32, upper U-shaped link 34 by extend ring 35 with in U-shaped link 36 be connected installation in the usual way, in U-shaped link 36 by composite insulator 37 with under U-shaped link 38 be connected installation, under U-shaped link 38 be arranged on the upper end of NUT wire clamp 41, define the connection of bracing wire assembly 4 and drop-down insulator chain assembly 3.
In order to preferably strengthen the Flexible Control of wind-deviation, control the pull-rod in assembly 5 protruding 58 and arrive the vertical dimension vertical dimension less than pull-rod protruding 58 to ground 6 of pouring weight 56.So pull-rod 52 top is suspended on casing 51 by pull-rod projection 58, and pouring weight 56 does not contacts with ground 6, and pouring weight 56 passes through centrifugal force by drop-down for pull-rod 52.In order to ensure the stability that support bar 53 is installed on ground 6, it is also possible to including that base 57, the quantity of base 57 are 4, base 57 is located at support bar 53 in the installation site on ground 6.Base 57 adds the support bar 53 installation strength on ground 6.Stull 54 can also be used to be arranged between each support bar 53, the same installation bonding strength increasing support bar 53.
Time actually used, this device is when resting state, if bracing wire assembly 4 is directly fixed with ground 6, then under wind action, owing to wire suspension insulator 2 cannot produce skew, all can not produce horizontal force and carry out equilibrium level wind load, theoretically, wire suspension insulator 2 and bracing wire assembly 4 will tend to infinity.Therefore, under high wind conditions, it is necessary to allow wire suspension insulator 2 to produce certain angle of wind deflection, it is possible to producing horizontal force and carry out equilibrium level wind load, insufficient section is undertaken by bracing wire assembly 4 again.As it is shown in figure 1, due to the effect of pull-rod 52 lower end pouring weight 56, the bracing wire assembly 4 etc. of pull-rod 52 and top connection is each perpendicular to ground.When strong wind state, as in figure 2 it is shown, wind action is in wire suspension insulator 2, driving drop-down insulator chain assembly 3 and bracing wire assembly 4 to produce upwards pulling force, pull pull-rod 52 to move upward, wire suspension insulator produces skew.Along with wind load strengthens, side-play amount strengthens the most therewith.When side-play amount reaches controlling value, brake disc 55 is collided bottom casing 51, and now the weight of base 57 starts to act on bracing wire assembly 4, stops wire suspension insulator 2 to continue skew.When wind-force reduces or stops, pull-rod 52 and bracing wire assembly 4 set back under the action of gravity of pouring weight 56.When wind speed exceedes certain numerical value, pulling force is caused to be more than the gravity of whole control device, control the overall displacement that will deform of support bar 53 of assembly 5, wire suspension insulator 2 additional load is no longer increased, though making to control assembly 5 to create certain deformation, but can avoid steel tower cross-arm 1 is damaged.
Controlling the principle of base 57 counterweight in assembly is: under wind effect, the effect of suppression wire suspension insulator 2 windage yaw can be played to greatest extent, the additional load of bracing wire assembly 4 can be controlled again, it is ensured that do not jeopardize the structural safety of steel tower cross-arm 1 because additional load is excessive.Can be determined by controlling angle of wind deflection, calculate the permission range of activity of bracing wire assembly 4 according to the cosine law, i.e. regulate length in the design process simultaneously.Concrete methods of realizing is for arrange brake disc 55 on pull-rod 52, and wherein brake disc 55 is bracing wire permission range of activity with the distance of casing 51 bottom.The steel tower cross-arm 1 distance apart from ground is 33 meters, a length of 5 meters of wire suspension insulator 2, and brake disc 55 is arranged at 0.78 meter of distance casing 51.Its computing formula is as follows:
Wherein,For wire cross-arm height,For suspension insulator string length,For controlling angle of wind deflection,Range of activity is allowed for bracing wire.Article one, bracing wire " V " type tower used on 500kV transmission line of electricity, wire cross-arm height H is 33.0m, and suspension insulator length lambda is 5.0m.Being drawn by graphing method, its maximum allowable angle of wind deflection is 41.0 °, controls angle of wind deflection α and should be less than the maximum allowable angle of wind deflection of wire suspension string, and leave certain remaining, therefore is taken as 30 °.Allow range of activity by calculating bracing wire, i.e. regulate lengthFor 0.78m.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle of the simply present invention described in above-described embodiment and description; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements both fall within the range of claimed invention.The protection domain of application claims is defined by appending claims and equivalent thereof.
Claims (6)
- null1. the wind-deviation flexible control device for transmission line of electricity，Including steel tower cross-arm (1) and the wire suspension insulator (2) that is arranged on steel tower cross-arm (1)，The other end of wire suspension insulator (2) is provided with drop-down insulator chain assembly (3)，The other end of drop-down insulator chain assembly (3) is provided with bracing wire assembly (4)，It is characterized in that: the other end of bracing wire assembly (4) is provided with control assembly (5)，Control the pull-rod (52) that assembly (5) includes being arranged on bracing wire assembly (4)，Pull-rod (52) is run through casing (51) and is arranged on casing (51) by pull-rod protruding (58) suspension，Pull-rod (52) middle part is installed with brake disc (55)，The size of brake disc (55) is more than casing (51)，The lower end of pull-rod (52) is provided with pouring weight (56)，The surrounding of casing (51) is installed with support bar (53) respectively，The quantity of support bar (53) is 4，Support bar (53) is fixedly mounted on ground (6).
- A kind of wind-deviation flexible control device for transmission line of electricity the most according to claim 1, it is characterized in that: described bracing wire assembly (4) includes NUT wire clamp (41) and lower NUT wire clamp (42), the lower end of upper NUT wire clamp (41) is provided with galvanized strand wires (43), lower NUT wire clamp (42) is installed in the lower end of galvanized strand wires (43), and lower NUT wire clamp (42) is connected installation with the upper end of pull-rod (52).
- A kind of wind-deviation flexible control device for transmission line of electricity the most according to claim 2, it is characterized in that: described drop-down insulator chain assembly (3) includes the yoke plate (32) installed with wire suspension insulator (2), U-shaped link (34) is installed on yoke plate (32), upper U-shaped link (34) by extend ring (35) with in U-shaped link (36) be connected installation, in U-shaped link (36) by composite insulator (37) with under U-shaped link (38) be connected installation, under U-shaped link (38) be arranged on the upper end of NUT wire clamp (41).
- A kind of wind-deviation flexible control device for transmission line of electricity the most according to claim 1, it is characterised in that: the vertical dimension of described pull-rod protruding (58) to pouring weight (56) is less than the vertical dimension of pull-rod protruding (58) to ground (6).
- A kind of wind-deviation flexible control device for transmission line of electricity the most according to claim 1, it is characterised in that: also including that base (57), the quantity of base (57) they are 4, base (57) is located at support bar (53) in the installation site of ground (6).
- A kind of wind-deviation flexible control device for transmission line of electricity the most according to claim 3, it is characterized in that: the distance on described steel tower cross-arm (1) distance ground is 33 meters, a length of 5 meters of wire suspension insulator (2), brake disc (55) is arranged at 0.78 meter of distance casing (51).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410150390.0A CN103915807B (en) | 2014-04-16 | 2014-04-16 | A kind of wind-deviation flexible control device for transmission line of electricity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410150390.0A CN103915807B (en) | 2014-04-16 | 2014-04-16 | A kind of wind-deviation flexible control device for transmission line of electricity |
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| CN103915807A CN103915807A (en) | 2014-07-09 |
| CN103915807B true CN103915807B (en) | 2016-08-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105375427B (en) * | 2015-11-24 | 2018-07-20 | 中国电力科学研究院 | A kind of anti-dancing device for single loop transmission line of electricity |
| CN105406430B (en) * | 2015-11-24 | 2018-07-10 | 中国电力科学研究院 | A kind of anti-dancing device for single loop transmission line of electricity |
| CN106370147A (en) * | 2016-08-22 | 2017-02-01 | 国网新疆电力公司电力科学研究院 | Wind deflection based power transmission line's wind deflection early warning system and method |
| CN110970851B (en) * | 2019-12-06 | 2024-04-12 | 中国电力工程顾问集团西南电力设计院有限公司 | Windproof bias-used 'shaped' hanging string |
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| CN201927974U (en) * | 2010-12-15 | 2011-08-10 | 河南省电力公司漯河供电公司 | Conductor galloping preventing device of power line |
| CN203536907U (en) * | 2013-10-31 | 2014-04-09 | 国家电网公司 | High voltage power transmission line wind deviation-resistant flexible insulation inhaul cable |
| CN203850795U (en) * | 2014-04-16 | 2014-09-24 | 中国能源建设集团安徽省电力设计院 | Windage yaw prevention flexible control device used for power transmission lines |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7546680B2 (en) * | 2006-01-10 | 2009-06-16 | Barthold Lionel O | Systems, methods and apparatus for transmission line re-conductoring |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201927974U (en) * | 2010-12-15 | 2011-08-10 | 河南省电力公司漯河供电公司 | Conductor galloping preventing device of power line |
| CN203536907U (en) * | 2013-10-31 | 2014-04-09 | 国家电网公司 | High voltage power transmission line wind deviation-resistant flexible insulation inhaul cable |
| CN203850795U (en) * | 2014-04-16 | 2014-09-24 | 中国能源建设集团安徽省电力设计院 | Windage yaw prevention flexible control device used for power transmission lines |
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