Rubber cable terminal abnormal hot spot testing device and fault diagnosis method
A technology for rubber cables and cable terminals, which is applied to measurement devices, circuit devices, emergency protection circuit devices, etc., can solve the problem of inaccurate evaluation results of abnormal hot spots inside rubber cable terminals, lack of research, and lack of high-speed rail EMU train testing and diagnosis methods and other problems to achieve the effect of avoiding the terminal explosion problem.
Active Publication Date: 2019-07-26
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
However, the existing research on this aspect is relatively scarce, and there is a lack of relevant testing and diagnostic methods suitable for high-speed rail EMU trains, which makes the evaluation results for abnormal hot spots inside the rubber cable terminal not accurate enough, and there is an urgent need for a rubber cable terminal abnormal hot spot test device. and fault diagnosis method, which are used to realize the purpose of effective processing and fault diagnosis of cable terminals for EMU trains when abnormal hot spots appear
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[0039] The present invention will be further described below in conjunction with the accompanying drawings.
[0040] figure 1 It is a schematic structural diagram of the abnormal hot spot testing device for rubber cable terminals of the present invention, which is used to realize the purpose of effective processing and fault diagnosis of ethylene propylene rubber (EPR) cable terminals for EMU trains when abnormal hot spots occur. Its structure and connection are as follows:
[0041] The rubber cable terminal abnormal hot spot test device is composed of a copper-plated steel isolation shell (2), a lower halogen-free flame retardant filling rope layer (4), an upper halogen-free flame retardant filling rope layer (10), and a lower stainless steel inner layer ( 16), the upper stainless steel liner (23), the first semiconductor cooling sheet (5), the second semiconductor cooling sheet (6), the third semiconductor cooling sheet (7), the fourth semiconductor cooling sheet (8), the F...
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The invention discloses a rubber cable terminal abnormal hot spot testing device and a fault diagnosis method. The testing device can achieve the purpose of effectively evaluating an ethyl propylene rubber (EPR) cable terminal for a multiple unit train when an abnormal hot spot appears, and the fault diagnosis method comprises the steps: the temperatures of all regions of the rubber cable terminalare measured; the temperature of the abnormal hot spot inside the terminal is estimated; the operation safety of the abnormal temperature inside the terminal is diagnosed; and an abnormal hot spot fault of the terminal is eliminated. Meanwhile, the rubber cable terminal abnormal hot spot testing device can further be connected with a general-type local discharge tester to further analyze the terminal state. The rubber cable terminal abnormal hot spot testing device and the fault diagnosis method have the beneficial effects that the abnormal hot spot fault in the rubber cable terminal for a high-speed train set can be effectively and conveniently tested, the superheated cable terminal is cooled, and the possibility is provided for field personnel to further explore the internal insulationstate of the cable terminal.
Description
technical field [0001] The invention relates to the field of fault evaluation of hot spot temperature rise of cable terminals, in particular to a device for testing abnormal hot spots of rubber cable terminals and a fault diagnosis method. Background technique [0002] Rubber type cables are widely used in EMU trains. With the rapid development of China's high-speed railway industry, more and more high-speed railway lines have been put into operation. As of the end of 2018, China's high-speed railway mileage has reached 29,000 kilometers, and the number of EMUs running every day There are thousands of trains. The safe and reliable operation of rubber cables is of great significance to ensure the reliability of high-speed railways as an indispensable equipment for transmitting electrical energy for EMU trains. At present, during the actual operation of rubber-type cables, the problems are mainly concentrated in the terminal of the cable. Due to the complex structure, cumbers...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G01R31/08G01K1/02H02H3/04H02H5/04G01K1/024
CPCG01R31/083G01R31/088G01K1/026H02H3/04H02H5/044
Inventor 周利军白龙雷邢立勐曹伟东车雨轩李丽妮郭蕾
Owner SOUTHWEST JIAOTONG UNIV