CN101304167B - Cable thermal expansion and contraction compensating device - Google Patents
Cable thermal expansion and contraction compensating device Download PDFInfo
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- CN101304167B CN101304167B CN2007100089640A CN200710008964A CN101304167B CN 101304167 B CN101304167 B CN 101304167B CN 2007100089640 A CN2007100089640 A CN 2007100089640A CN 200710008964 A CN200710008964 A CN 200710008964A CN 101304167 B CN101304167 B CN 101304167B
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- fulcrum
- fulcrums
- cold
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Abstract
The invention discloses a compensation device for thermal expansion and cold shrinkage of cable. The device comprises a connection frame and a compensation unit; wherein, the connection frame is arranged on a line tower and provided with at least two fulcrums used for connecting the two connection parts of the cable; the compensation unit is connected with the connection frame and used for automatically adjusting the distance between the two fulcrums to compensate the thermal expansion and cold shrinkage of the cable length between two high voltage line towers. The device is provided with the compensation unit used for automatically adjusting the distance between the two fulcrums to compensate the thermal expansion and cold shrinkage of the cable length between two high voltage line towers, so in summer the compensation unit shortens the distance between the two fulcrums to compensate the thermal expansion of the cable length and in winter the compensation unit enlarges the distance between the two fulcrums to compensate the cold shrinkage of the cable length. Therefore, the cable length between two line towers remains unchanged basically so that the drooping height of the cable remains the same and a lower coil point keeps invariant distance with the ground at the safe height, thus totally avoiding possible safety accidents of background technology, enhancing the flexibility and the shock strength of the cable, prolonging service life and lowering the height of the line towers.
Description
Technical field
The present invention relates to a kind of equipment, particularly relate to a kind of compensation arrangement that length of cable changes because of rising-heat contracting-cold that is used to compensate.
Background technology
High voltage cable laying at present is to adopt following connected mode: please refer to Fig. 1, Fig. 1 has illustrated the cable laying sketch map of background technology.A plurality of high-tension line towers 1 are set earlier, and this high-tension line tower is provided with link 3, has two fixed pivots at least on this link 3, at last two portions of connecing of cable 2 is connected in two fixed pivots of link respectively.Cable 2 length thermal coefficient of expansions are high, so when summer, shown in the dotted line cable 2` of Fig. 1, the cable 2` length between the two high-voltage line towers 1 is elongated; When winter, shown in the solid line cable 2`` of Fig. 1, the cable 2`` contraction in length between the two high-voltage line towers 1.Cable 2 length variations between the two high-voltage line towers 1 can make cable 2 sagging height differ; And it is sagging low excessively; Summer is near around point and ground distance at present; Cause security incident easily, for the method that solves the above problems present employing all is to increase substantially line tower height degree, but the line tower height is spent height and can be caused a lot of inconvenience again.
Summary of the invention
The present invention provides cable rising-heat contracting-cold compensating device, and it has overcome the length of cable rising-heat contracting-cold of background technology and the sagging height that brings differs, and causes the deficiency of security incident easily.
The object of the invention is realized like this: cable rising-heat contracting-cold compensating device, it includes a link and a compensating unit.This link is located on the line tower and is had two fulcrums at least, and this two fulcrum is used for two of connection cable and meets portion.This compensating unit connects link, is used for regulating automatically spacing between two fulcrums to compensate the rising-heat contracting-cold of the length of cable between the two line towers.
A preferred embodiment of the present invention, this link includes two connecting rods, and two connecting rod first ends articulate, and the second end is made as fulcrum; This compensating unit includes a spring, and this spring is connected between the connecting rod.
A preferred embodiment of the present invention, this link comprises two connecting rods, and two connecting rod first ends articulate, and the second end is made as fulcrum; This compensating unit comprises two springs, and the stiff end of two springs is located at the left and right sides away from link respectively, and the free end of this two spring is connected to two connecting rods of link respectively.
A preferred embodiment of the present invention, this link comprises two connecting rods, and two connecting rod first ends articulate, and the second end is made as fulcrum, and offers the waist hole on this connecting rod; This compensating unit comprises that the pole, two in the waist hole of passing two connecting rods is divided into the pad and two springs of the support chip at pole both ends, two slip socket poles; This two pad lays respectively at the two connecting rods outsides, this spring socket pole and between support chip and pad.
A preferred embodiment of the present invention, this link includes two pipe fittings, can relatively move between the two pipe fittings, and two pipe fittings all be made as fulcrum away from the end; This compensating unit includes a spring, both ends of the spring be connected to respectively two pipe fittings near the end.
A preferred embodiment of the present invention, this two pipe fittings is combined as scalable assembly.
A preferred embodiment of the present invention; This compensating unit comprises a temperature inductor, a controller and an actuator, and controller is used for regulating automatically spacing between two fulcrums to compensate the rising-heat contracting-cold of the length of cable between the two line towers according to the detected temperature value of temperature inductor control actuator.
A preferred embodiment of the present invention; This link comprises that a two-way screw mandrel and two is bolted in the nut at two-way screw mandrel two ends respectively; This nut all is made as fulcrum; This actuator comprises a power spare and a travelling gear, the power spare output travelling gear that is in transmission connection, the coaxial affixed or screw mandrel that is in transmission connection of travelling gear.
A preferred embodiment of the present invention, this cable are high voltage cable, and this cable is directly connected in fulcrum or is connected in fulcrum through magnetic bottle.
Cable rising-heat contracting-cold compensating device of the present invention; It is characterized in that, compensating unit is set is used for regulating automatically spacing between two fulcrums compensating the rising-heat contracting-cold of the length of cable between the two line towers, so compensating unit shortens spacing between two fulcrums and is heated with the compensation length of cable and increases during summer; Compensating unit increases spacing between two fulcrums with the shrinkage of catching a cold of compensation length of cable during winter; Therefore make that the length of cable between the two line towers is constant basically, make that the sagging height of cable is identical, make down constant and maintain a safe altitude around point and ground distance; The security incident that then can avoid background technology to occur fully; Can strengthen the impact strength of cable flexibility, cable, improve useful life, reduce line tower height degree.And compensation arrangement of the present invention can directly apply on the existing line tower, can transform existing line tower fast, at low cost.Constitute being rotationally connected relation between two connecting rods, the spring of compensating unit is connected between the connecting rod, and pulling force increased when then length of cable was caught a cold shrinkage, and this pulling force increase overcomes spring force makes the spacing growth between the fulcrum of two connecting rods; Then pulling force reduces during the length of cable expanded by heating, and this pulling force reduces the spacing that makes between the fulcrum of two connecting rods and under the spring force effect, shortens; Simple in structure, low cost of manufacture, effective.Two springs are located at the left and right sides away from link respectively, and then because the spring thermal effect is flexible flexible in the same way with the cable thermal effect, so compensation effect is better.The controller of compensating unit is used for regulating automatically spacing between two fulcrums to compensate the rising-heat contracting-cold of the length of cable between the two line towers according to the detected temperature value of temperature inductor control actuator; Then whole compensation can compensate under electronic equipment control in automation; Compensation precision is accurate, and cost is low.The power spare output of the actuator travelling gear that is in transmission connection, the travelling gear screw mandrel that is in transmission connection, screw mandrel rotate and drive two nuts near moving or away from moving, then mechanical structure is simple, execution accuracy height.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the cable laying sketch map of background technology.
Fig. 2 is that the master of embodiment one compensation arrangement looks sketch map.
Fig. 3 is that the master of embodiment two compensation arrangements looks sketch map.
Fig. 4 is that the master of embodiment three compensation arrangements looks sketch map.
Fig. 5 is that the master of embodiment four compensation arrangements looks sketch map.
Embodiment
Embodiment one
Please refer to Fig. 2, the master that Fig. 2 has illustrated embodiment one compensating unit looks sketch map.Cable rising-heat contracting-cold compensating device includes a link 3 and a compensating unit 4.
Please refer to Fig. 2, link 3 is fixedly arranged on the high-tension line tower, and link includes two connecting rods, 31, two connecting rods, 31 upper ends and articulates, and the bottom is made as fulcrum.
Please refer to Fig. 2, cable 2 has two two and meets portion 21, and this two connects the fulcrum that portion 21 is connected in two connecting rods 31.This two connects portion's 21 non-fulcrums that are directly connected in two connecting rods 31 as required, but is connected in the fulcrum of two connecting rods 31 again through magnetic bottle 22.Certainly, as required, some occasion two connects the fulcrum that portion 21 also can be directly connected in two connecting rods 31.
Please refer to Fig. 2, compensating unit 4 includes a spring 41, and this spring 41 is connected between the middle and lower part of two connecting rods 31.Wherein, these two connecting rods, 31 length, spring length and coefficient of elasticity can be provided with according to actual needs, therefore are not described further at this.
In the present embodiment, cable is a high voltage cable, is used for the electric industry electric power transfer, but not as limit, equally also goes for telecommunications cable.
Embodiment two
Please refer to Fig. 3, the master that Fig. 3 has illustrated embodiment two compensating units looks sketch map.Cable rising-heat contracting-cold compensating device includes a link 3 and a compensating unit 4.
Please refer to Fig. 3, link 3 is fixedly arranged on the high-tension line tower, and link includes two connecting rods, 31, two connecting rods, 31 upper ends and articulates, and the bottom is made as fulcrum.This connecting rod 31 is provided with long lumbar hole 311.
Please refer to Fig. 3, cable 2 has two two and meets portion 21, and this two connects the fulcrum that portion 21 is connected in two connecting rods 31.This two connects portion's 21 non-fulcrums that are directly connected in two connecting rods 31 as required, but is connected in the fulcrum of two connecting rods 31 again through magnetic bottle 22.Certainly, as required, some occasion two connects the fulcrum that portion 21 also can be directly connected in two connecting rods 31.
Please refer to Fig. 3; Compensating unit 4 include one pass the waist hole 311 of two connecting rods pole 44, two be divided into the nut 45 at pole 44 both ends, the pad 46 and two springs 41 of two slip socket poles 44; This two pad 46 lays respectively at two connecting rods, 31 outsides, this spring 41 socket poles 44 and between nut 45 and pad 46.
Embodiment three
Please refer to Fig. 4, the master that Fig. 4 has illustrated embodiment three compensating units looks sketch map.Cable rising-heat contracting-cold compensating device includes a link 3 and a compensating unit 4.
Please refer to Fig. 4, link 3 is fixedly arranged on the high-tension line tower.This link 3 is scalable assembly, comprises that an extra heavy pipe and a slip cap are connected on the tubule within the extra heavy pipe, this extra heavy pipe, tubule all be made as fulcrum away from the end.
Please refer to Fig. 4, cable 2 has two two and meets portion 21, and this two connects the fulcrum that portion 21 is connected in two connecting rods 31.This two connects portion's 21 non-fulcrums that are directly connected in two connecting rods 31 as required, but is connected in the fulcrum of two connecting rods 31 again through magnetic bottle 22.Certainly, as required, some occasion two connects the fulcrum that portion 21 also can be directly connected in two connecting rods 31.
Please refer to Fig. 4, this compensating unit 4 includes a spring, this both ends of the spring be connected to respectively extra heavy pipe, tubule near the end.
Embodiment four
Please refer to Fig. 5, the master that Fig. 5 has illustrated embodiment four compensating units looks sketch map.Cable rising-heat contracting-cold compensating device includes a link 3 and a compensating unit 4.
Please refer to Fig. 5, link 3 comprises that a two-way screw mandrel 32 and two is bolted in the nut 33 at two-way screw mandrel 32 two ends respectively, and this nut 33 all is made as fulcrum.
Please refer to Fig. 5, compensating unit 4 comprises a control unit 42 and an actuator, and this control unit 42 comprises a temperature inductor and a controller.Actuator comprises a battery, a motor and a travelling gear 43.The motor output end travelling gear 43 that is in transmission connection, the travelling gear 43 coaxial screw mandrels 32 that are fixed in.
The Packed can of these control unit 42 outsourcings is used to prevent to have influence on because of the magnetic field that high-tension bus-bar sends the temperature inductor and the controller of control unit.
Whether controller works and forward or reverse according to the detected temperature value control of temperature inductor motor 43.The output of motor rotates and also drives travelling gear 43 and rotate, and travelling gear 43 rotating band movable wire bars 32 rotate, and screw mandrel 32 rotates and drives two nuts 33 near moving or away from mobile.
The above is merely preferred embodiment of the present invention, so can not limit the scope that the present invention implements with this, the equivalence of promptly doing according to claim of the present invention and description changes and modifies, and all should still belong in the scope that patent of the present invention contains.
Claims (6)
1. cable rising-heat contracting-cold compensating device, it is characterized in that: it includes:
One link, this link are located on the line tower and are had two fulcrums at least, and this two fulcrum is used for two of connection cable and meets portion, and this link includes two connecting rods, and two connecting rod first ends articulate, and the second end is made as fulcrum; And
One compensating unit, this compensating unit connects link, is used for regulating automatically spacing between two fulcrums to compensate the rising-heat contracting-cold of the length of cable between the two line towers, and this compensating unit includes a spring, and this spring is connected between the connecting rod.
2. cable rising-heat contracting-cold compensating device according to claim 1 is characterized in that: this cable is a high voltage cable, and this cable is directly connected in fulcrum or is connected in fulcrum through magnetic bottle.
3. cable rising-heat contracting-cold compensating device, it is characterized in that: it includes:
One link, this link are located on the line tower and are had two fulcrums at least, and this two fulcrum is used for two of connection cable and meets portion, and this link comprises two connecting rods, and two connecting rod first ends articulate, and the second end is made as fulcrum;
One compensating unit; This compensating unit connects link; Be used for regulating automatically spacing between two fulcrums to compensate the rising-heat contracting-cold of the length of cable between the two line towers; This compensating unit comprises two springs, and the stiff end of two springs is located at the left and right sides away from link respectively, and the free end of this two spring is connected to two connecting rods of link respectively.
4. cable rising-heat contracting-cold compensating device according to claim 3 is characterized in that: this cable is a high voltage cable, and this cable is directly connected in fulcrum or is connected in fulcrum through magnetic bottle.
5. cable rising-heat contracting-cold compensating device, it is characterized in that: it includes:
One link, this link are located on the line tower and are had two fulcrums at least, and this two fulcrum is used for two of connection cable and meets portion, and this link comprises two connecting rods, and two connecting rod first ends articulate, and the second end is made as fulcrum, and offers the waist hole on this connecting rod;
One compensating unit; This compensating unit connects link; Be used for regulating automatically spacing between two fulcrums to compensate the rising-heat contracting-cold of the length of cable between the two line towers; This compensating unit comprises that the pole, two in the waist hole of passing two connecting rods is divided into the pad and two springs of the support chip at pole both ends, two slip socket poles, and this two pad lays respectively at the two connecting rods outsides, this spring socket pole and between support chip and pad.
6. cable rising-heat contracting-cold compensating device according to claim 5 is characterized in that: this cable is a high voltage cable, and this cable is directly connected in fulcrum or is connected in fulcrum through magnetic bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100089640A CN101304167B (en) | 2007-05-11 | 2007-05-11 | Cable thermal expansion and contraction compensating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100089640A CN101304167B (en) | 2007-05-11 | 2007-05-11 | Cable thermal expansion and contraction compensating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101304167A CN101304167A (en) | 2008-11-12 |
| CN101304167B true CN101304167B (en) | 2012-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100089640A Expired - Fee Related CN101304167B (en) | 2007-05-11 | 2007-05-11 | Cable thermal expansion and contraction compensating device |
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| Country | Link |
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| CN (1) | CN101304167B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103090992B (en) * | 2013-01-23 | 2014-10-01 | 武汉北方光电科技有限公司 | Fixed device and furnace body temperature measuring optical cable wiring method |
| CN105882458B (en) * | 2014-12-31 | 2018-07-10 | 马斌久 | Elasticity tension compensation device |
| CN106549350B (en) * | 2016-12-06 | 2018-01-30 | 国网山东省电力公司曹县供电公司 | The U-shaped attachment means of ultra-high-tension power transmission line auto-tensioning |
| CN107834436B (en) * | 2017-11-16 | 2024-06-04 | 国网河南省电力公司汝州市供电公司 | Portable power equipment's fastener |
| CN111446686A (en) * | 2020-03-16 | 2020-07-24 | 神华国能集团有限公司 | Cable connector with length adjusting function |
| CN111768914B (en) * | 2020-06-19 | 2021-12-31 | 大唐辽源发电厂 | Thermal shrinkage and cold expansion type self-on-off cable sheath |
| CN111917059A (en) * | 2020-09-15 | 2020-11-10 | 周彦彤 | High-altitude electric power distance clamping system based on big data and springs and unmanned aerial vehicle |
| CN112952705B (en) * | 2021-02-23 | 2022-06-28 | 聊城市瀚格智能科技有限公司 | Tensioning mechanism for high-voltage overhead line |
| CN113148772B (en) * | 2021-04-19 | 2022-08-26 | 衢州学院 | Power tower cable tightening means |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5792983A (en) * | 1996-12-10 | 1998-08-11 | Shirmohamadi; Manuchehr | Sag compensator for suspended lines using rotary motion |
| CN1084069C (en) * | 1996-11-08 | 2002-05-01 | 费斯特拉有限公司 | Device for compensatint variations in the length of tensioned cables, with substantially constant traction |
-
2007
- 2007-05-11 CN CN2007100089640A patent/CN101304167B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084069C (en) * | 1996-11-08 | 2002-05-01 | 费斯特拉有限公司 | Device for compensatint variations in the length of tensioned cables, with substantially constant traction |
| US5792983A (en) * | 1996-12-10 | 1998-08-11 | Shirmohamadi; Manuchehr | Sag compensator for suspended lines using rotary motion |
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| Publication number | Publication date |
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| CN101304167A (en) | 2008-11-12 |
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Granted publication date: 20120125 Termination date: 20140511 |