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Subway rail transport insulation fastener damage position detection method

A technology of rail transportation and detection method, which is applied in the direction of driving rail installation, transportation and packaging, and measurement of electricity, can solve problems such as measurement difficulties, and achieve the effect of high detection accuracy and simple structure

Active Publication Date: 2021-06-11
XUZHOU ZHONGKUANG TRANSMISSION TRACK SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]Existing techniques for locating damaged points include rail-to-ground potential measurement, use of corroded sampling pipes, etc., but these methods are often difficult to measure and difficult to operate on site and in locomotive operation Realized under

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  • Subway rail transport insulation fastener damage position detection method

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Embodiment Construction

[0020] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] A method for detecting the damaged position of insulating fasteners used in subway rail transportation according to the embodiment of the present invention, according to figure 1 As shown, it is characterized in that the method comprises the following steps:

[0022] S1: The return track (1) is connected to the negative pole of the substation (2) through a cable, the return track (1) is connected with multiple fasteners (5) at equal intervals, and the return track (1) is grounded through the fasteners (5) , there is a substation (2) at both ends of the running section of the locomotive (3), and the substation (2) supplies power to the locomotive (3) through the connecting wire with the locomotive (3);

[0023] S2: Install the travel distance monitoring device (4) on the locomotive (3), collect the position data of the ...

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Abstract

The invention discloses a subway rail transport insulation fastener damage position detection method, which comprises the following steps that a backflow rail is connected with a negative electrode of a power substation, each insulation fastener is provided with a piezoelectric sensing module, a fiber bragg grating is pasted on the piezoelectric sensing module, one end of the fiber bragg grating is connected with a demodulation device, the locomotive is provided with a driving distance monitoring device, and the piezoelectric sensing module measures the voltage information of the insulation fastener and then sends the data to the demodulation device through the fiber bragg grating for demodulation to obtain the voltage data of the insulation fastener. The demodulation device and the driving distance monitoring device send data to the control unit in a wireless transmission mode, and the control unit determines the damage positions of the insulation fasteners according to the voltages of the insulation fasteners and the position of the locomotive. The method can directly and conveniently detect the damaged position of the insulation fastener, is simple in structure, is accurate and safe, and is especially suitable for subway rail transportation and other application fields adopting a direct-current traction locomotive.

Description

technical field [0001] The invention belongs to the technical field of track monitoring, and in particular relates to a method for detecting damaged positions of insulating fasteners used in subway track transportation. Background technique [0002] In the subway rail transportation system, the positive pole is connected to the catenary to supply power to the locomotive. The rail is used as the running support of the locomotive and also serves as the return rail. The return rail is connected to the ground through insulating fasteners. The only path for stray current to flow to the ground. When the insulating fastener is damaged, the stray current flowing into the ground will increase greatly. The stray current will corrode the buried metal pipeline. After passing through the relay, increasing the current flowing to the relay will easily lead to the malfunction of the feed switch and leakage protection facilities. In addition, the stray current may also cause the false detona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R19/165B60M5/00B60M3/00
CPCG01R31/1245G01R19/16533B60M5/00B60M3/00
Inventor 许少毅王禹桥杨雪锋李清伟李允彩徐引
Owner XUZHOU ZHONGKUANG TRANSMISSION TRACK SCI & TECH
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