Broken rail real-time detection device and detection method thereof

A detection device and a technology for rail breakage, which are used in transportation and packaging, railway vehicle shape measuring instruments, and railway car body components, etc., can solve the problems of inability to perform real-time rail break detection and hidden dangers in operational safety, and increase the complexity of the equipment. Strong anti-traction backflow interference ability, small effect of primary parameters and environmental factors

Inactive Publication Date: 2011-01-26
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Without the track circuit, real-time broken track detection is impossible, which poses a major hidden danger to operational safety

Method used

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  • Broken rail real-time detection device and detection method thereof
  • Broken rail real-time detection device and detection method thereof
  • Broken rail real-time detection device and detection method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: see figure 1 , a broken rail detection device, comprising two rails 1 of a rail locomotive, a pair of electrical short wires 2 (AB, CD) are arranged between the two rails, a pair of electrical short wires 2 (AB, CD) CD) and the rail 1 encircle an electrical isolation unit; four current sensors 11, 12, 13, 14 are arranged on the rail of the electrical isolation unit, and the described current sensors 11, 12, 13, 14 and the current signal receiving and processing unit 4 is electrically connected and outputs the broken rail signal to the output device 5. The current signal receiving and processing unit includes a filter, a microprocessor, a programmable logic controller, a logic module, and the like.

[0036] The distance between two electrical short wirings is 2-4km.

[0037] The current sensor is mounted on the rail near the end of the electrical short connection.

[0038] When the rail locomotive 3 travels on the electrified railway, or stops on the railwa...

Embodiment 2

[0043] Example 2, see figure 2 , same as Embodiment 1, the difference is that it also includes a resistor 7, and the resistor is arranged between the catenary and the steel rail at the end of the power supply section of the traction substation.

[0044] If there is no locomotive running on the electrified railway, or when it is parked on the railway, there is no traction backflow on the rail between the traction substation and the locomotive. At this time, a resistor can be connected between the catenary and the rail at the end of the power supply section of the traction substation. The principle for determining the size of the resistance is to consume the least power under the premise of being able to detect broken rails (equivalent to the equivalent resistance of an unloaded running locomotive). In this way, current flows on the rail between the resistor and the traction substation. The change of the current signal detected by the sensor with the state of the rail is the ...

Embodiment 3

[0045] Embodiment 3: see image 3 , the same as that of Embodiment 1, the difference is that it also includes a voltage source 8, and the voltage source is arranged between the two steel rails at the middle position of the electrical isolation unit. The frequency of the voltage source may be 50 Hz.

[0046] In the case of no traction return (such as on non-electrified railways, or there are no locomotives on electrified railways), current can be generated on the rails by means of an external power supply.

[0047] Table 2 gives the image 3 The current signal of the medium current sensor in different rail states (when the track is complete, the current of each sensor is equal and equal to 1).

[0048] The sensor current when the 250Hz voltage source acts on the table

[0049]

[0050] It can be seen from Table 2 that the current signals of the four current sensors and their combinations have obvious differences in different rail states, so it can be judged whether ...

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PUM

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Abstract

The invention relates to a railway track detection device and a use method. The broken rail detection device comprises two steel rails of a rail-mounted locomotive, and is mainly characterized in that at least a pair of electric short wires are arranged between the two steel rails; the electric short wires and the two steel rails surround into an electrical isolation unit; at least one current sensor is arranged on one steel rail of the electrical isolation unit; and the current sensor is electrically connected with a current signal receiving and processing unit which outputs a broken rail signal to an output device. The invention has the advantages of adopting a direct short-circuit jointless track circuit; the circuit can not be used as the traditional track circuit although a shunt dead section exists; and the jointless track circuit is superior in the broken rail detection aspect because of the simple device thereof.

Description

technical field [0001] The invention relates to a railway track detection device and method. Background technique [0002] Rail breakage on the railway operation line seriously threatens driving safety and is one of the major hidden dangers leading to driving accidents. Once the broken track takes place, it is required to at least send a signal to the car ahead and make it have enough time to take preventive measures, otherwise, it will surely cause a major vicious accident of car crash. To detect broken rails in time and prevent the occurrence of vicious operational accidents, it is necessary to detect broken rails in real time. The main equipment for the operation control of rail locomotives that is widely used at present is the track circuit. According to the working principle of the track circuit, the occurrence of broken rail is displayed by the track circuit as the occupancy of the train in the section, that is, the display results of the broken track and the occupan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61K9/08
Inventor 田铭兴
Owner LANZHOU JIAOTONG UNIV
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