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Electric power overhead cable sag adjusting device

A power overhead and adjustment device technology, applied in the field of power cables, can solve problems such as inability to handle sag, increase the probability of accidents, and achieve the effects of reducing risks, ensuring speed and energy efficiency

Inactive Publication Date: 2022-04-19
江志磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to solve the problem that the prior art can only detect the sag, but cannot deal with the sag in time, thereby increasing the probability of accidents, and now provides an electric power overhead cable sag adjustment device

Method used

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  • Electric power overhead cable sag adjusting device
  • Electric power overhead cable sag adjusting device
  • Electric power overhead cable sag adjusting device

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0031] Specific implementation mode one: refer to Figure 1 to Figure 4 This embodiment is described in detail. The sag adjustment device for electric power overhead cables described in this embodiment includes a sag monitoring device, an upper swing arm 2, a lower swing arm 3, a motor 4, a fixed connector 5, a screw rod 6, a nut 7, Nut limit block 8, swing arm limit block 9 and control part.

[0032] The above-mentioned sag monitoring device adopts a grating optical fiber strain sensor arranged on the cable under test for collecting the strain force of the cable. The neural network model is trained by using the historically collected cable strain force and its corresponding sag value, and then the trained neural network model is used to obtain the sag value. The power supply in the sag monitoring device is a high-voltage cable induction power-taking device.

[0033] Specifically, the main structure of the power overhead cable sag adjustment device in this embodiment is as f...

specific Embodiment approach 2

[0050] Specific implementation mode two: refer to Figure 5 Describe this embodiment in detail. This embodiment is a further description of the sag adjustment device for overhead electric cables described in Embodiment 1. The sag adjustment device for overhead electric cables described in this embodiment further includes a bracket 10, The bracket 10 is used to support the sag adjustment device for electric overhead cables.

[0051] Further, in this embodiment, the bracket 10 is a straight rod, and the bottom end of the screw rod 6 is connected to the top of the straight rod through a bearing. In practical application, the straight pole can be directly set up on the ground between two electric towers or poles to support the drooping cables.

specific Embodiment approach 3

[0052] Specific implementation mode three: refer to Figure 6 Describe this embodiment in detail. This embodiment is a further description of the sag adjustment device for overhead electric cables described in Embodiment 1. The sag adjustment device for overhead electric cables described in this embodiment further includes a bracket 10, The bracket 10 is used to support the sag adjustment device for electric overhead cables.

[0053] Further, in this embodiment, the bracket 10 includes an upper pole 10-1 and a lower pole 10-2, both of which are "L" shaped. One end of the upper support rod 10-1 is fixedly connected with the motor 4, and one end of the lower support rod 10-2 is connected with the bottom end of the screw rod 6 through a bearing. When this support is used in practice, the other ends of the upper support rod 10-1 and the lower support rod 10-2 are installed on the electric tower or the electric pole, so as to reduce the occupied area.

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Abstract

An electric power overhead cable sag adjusting device relates to the field of electric power cables. The invention aims to solve the problem that in the prior art, only sag detection can be carried out, sag processing cannot be carried out in time, and then the accident occurrence probability is increased. A power output shaft of a motor is coaxially connected with one end of a screw, the screw is in threaded connection with a nut, one end of an upper swing arm is hinged to one end of a lower swing arm, the other end of the upper swing arm is hinged to a motor shell, the other end of the lower swing arm is hinged to the outer circumferential face of the nut, and the upper swing arm, the lower swing arm and the screw are located on the same plane. An electromagnetic energy taking coil of the high-voltage cable induction power taking device is fixed to one end of the upper swing arm, the control part collects sag in real time through the sag monitoring device and compares the collected sag with a standard threshold value range, when the collected sag is larger than the upper limit of the standard threshold value range, the driving motor rotates forwards, and otherwise, the driving motor rotates backwards.

Description

technical field [0001] The invention belongs to the field of power cables, in particular to the sag adjustment of overhead cables. Background technique [0002] Generally, when the power transmission distance is long, due to the weight of the wire, a slight sag will be formed, making the wire in the shape of a catenary. This is because it takes an infinite force to straighten a wire, but there is no such force in practice, and it will also bring a burden to the tower, so usually within the controllable range, the cable needs to have sag. Sag refers to the vertical distance between the lowest point of the conductor and the line between the two suspension points when the suspension height of the conductors on two adjacent base poles is the same on a flat ground. [0003] The sag of the transmission line is the main indicator of the safe operation of the line. If the sag is too large or too small, it will affect the safe operation of the line. When the sag is too large, the s...

Claims

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Application Information

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IPC IPC(8): H02G7/02
CPCH02G7/02
Inventor 江志磊赵琳庄开智张婷娟张世强李征南闫利冬秦忠磊佟宇宁孙天琦刘春序顾雷叶飞
Owner 江志磊