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Cable thermal expansion and contraction compensating device

A thermal expansion and contraction compensation device technology, applied in cable installation, overhead installation, electrical components, etc., can solve the problems of safety accidents, short distance between the winding point and the ground, and different sagging heights of cables 2, etc., to achieve The effect of avoiding safety accidents, reducing the height of the line tower, and simple structure

Inactive Publication Date: 2012-01-25
刘玉恩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The change in the length of the cable 2 between the two high-voltage line towers 1 will cause the sag height of the cable 2 to be different, and the sag is too low. In summer, the distance between the winding point and the ground is close, which may easily cause safety accidents. In order to solve the above problems, the current method is adopted All of them greatly increase the height of the line tower, but the height of the line tower is too high and it will cause a lot of inconvenience

Method used

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  • Cable thermal expansion and contraction compensating device
  • Cable thermal expansion and contraction compensating device
  • Cable thermal expansion and contraction compensating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Please check figure 2 , figure 2 A schematic front view of the compensation unit in Embodiment 1 is shown. The cable thermal expansion and contraction compensation device includes a connecting frame 3 and a compensation unit 4 .

[0022] Please check figure 2 , the connecting frame 3 is fixed on the high-voltage line tower, and the connecting frame includes two connecting rods 31, the upper ends of the two connecting rods 31 are pivotally connected, and the lower ends are set as fulcrums.

[0023] Please check figure 2 , the cable 2 has two joints 21 , and the two joints 21 are connected to the fulcrums of the two connecting rods 31 . According to requirements, the two connecting parts 21 are not directly connected to the fulcrums of the two connecting rods 31 , but are connected to the fulcrums of the two connecting rods 31 through the magnetic bottle 22 . Of course, according to needs, in some occasions, the two connecting parts 21 can also be directly connec...

Embodiment 2

[0027] Please check image 3 , image 3 A schematic front view of the compensation unit in Embodiment 2 is shown. The cable thermal expansion and contraction compensation device includes a connecting frame 3 and a compensation unit 4 .

[0028] Please check image 3 , the connecting frame 3 is fixed on the high-voltage line tower, and the connecting frame includes two connecting rods 31, the upper ends of the two connecting rods 31 are pivotally connected, and the lower ends are set as fulcrums. The connecting rod 31 is provided with a long waist hole 311 .

[0029] Please check image 3 , the cable 2 has two joints 21 , and the two joints 21 are connected to the fulcrums of the two connecting rods 31 . According to requirements, the two connecting parts 21 are not directly connected to the fulcrums of the two connecting rods 31 , but are connected to the fulcrums of the two connecting rods 31 through the magnetic bottle 22 . Of course, according to needs, in some occasi...

Embodiment 3

[0032] Please check Figure 4 , Figure 4 A schematic front view of the compensation unit of the third embodiment is shown. The cable thermal expansion and contraction compensation device includes a connecting frame 3 and a compensation unit 4 .

[0033] Please check Figure 4 , the connecting frame 3 is fixed on the high-voltage line tower. The connecting frame 3 is a telescopic component, including a thick tube and a thin tube slidingly sleeved in the thick tube, and the remote ends of the thick tube and the thin tube are both set as fulcrums.

[0034] Please check Figure 4 , the cable 2 has two joints 21 , and the two joints 21 are connected to the fulcrums of the two connecting rods 31 . According to requirements, the two connecting parts 21 are not directly connected to the fulcrums of the two connecting rods 31 , but are connected to the fulcrums of the two connecting rods 31 through the magnetic bottle 22 . Of course, according to needs, in some occasions, the tw...

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PUM

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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 thecompensation 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 [0001] The invention relates to a device, in particular to a compensating device for compensating the change of cable length due to thermal expansion and contraction. Background technique [0002] At present, the following connection methods are used for laying high-voltage cables: Please refer to figure 1 , figure 1 A schematic diagram of cable laying in the background technology is shown. First, a plurality of high-voltage line towers 1 are installed, and the high-voltage line towers are provided with a connecting frame 3, and the connecting frame 3 has at least two fixed fulcrums, and finally the two joints of the cable 2 are respectively connected to the two fixed fulcrums of the connecting frame. The thermal expansion coefficient of the length of cable 2 is high, so in summer, if figure 1 As shown by the dotted line cable 2`, the length of the cable 2` between the two high-voltage towers 1 becomes longer; in winter, as figure 1 As shown by the solid ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G7/00H02G7/02
Inventor 刘玉恩
Owner 刘玉恩