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Device for detecting hydrogen generated by an air gap of cable buffer layer under working condition

A technology for detection devices and working conditions, applied in the field of cables, can solve problems such as undetectable and difficult to detect

Inactive Publication Date: 2020-02-28
XIAMEN ELECTRIC POWER SUPPLY COMPANY OF STATE GRID FUJIAN ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when ablation and discharge traces occur in the buffer layer, the occurrence of this phenomenon cannot be monitored with a partial discharge instrument, and it is difficult to detect this defect with various means of withstand voltage and monitoring partial discharge

Method used

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  • Device for detecting hydrogen generated by an air gap of cable buffer layer under working condition

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Experimental program
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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0014] A cable 2 buffer layer generates hydrogen gas detection device in the air gap under working conditions, refer to figure 1 , including: AC power supply 1, cable 2, airtight device 4 for storing gas, and sensor 3 for detecting hydrogen; in this embodiment, the cable 2 is specifically a 10KV cable.

[0015] The cable 2 and the sensor 3 for detecting hydrogen are arranged inside the airtight device 4 for storing gas, the AC power supply 1 is connected to the buffer layer, and the air gap on the buffer layer of the cable 2 is connected to the detection device. connect. One end of the sensor 3 is connected to the air gap of the cable 2, and the other end of the sensor 3 is connected to a processor. The processor is connected to a buzzer and the display, and when the sensor 3 detects hydrogen, it sends a signal to the processor, and the proce...

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Abstract

The invention provides a device for detecting hydrogen generated by an air gap of a cable buffer layer under a working condition. The device comprises an alternating current power supply, a cable, a sealing device for storing gas and a sensor for detecting hydrogen, wherein the cable and the sensor for detecting hydrogen are arranged in an airtight device for storing a gas, an alternating currentpower supply is connected with a buffer layer, and an air gap on the buffer layer of the cable is connected with the detection device. By applying the technical scheme, the hydrogen produced by the air gap of the cable buffer layer can be effectively detected.

Description

technical field [0001] The invention relates to the field of cables, in particular to a device for detecting hydrogen gas generated in an air gap of a cable buffer layer under working conditions. Background technique [0002] With the continuous growth of my country's economic strength, in the past ten years, in the case analysis of failures on the high-voltage cable body, it was found that a large number of burns and discharge marks appeared on the surface of the buffer layer of the cable body, which seriously even caused cable breakdown. However, when ablation and discharge traces occur in the buffer layer at the beginning, the occurrence of this phenomenon cannot be monitored with a partial discharge instrument, and it is difficult to detect this defect by various means of withstand voltage and monitoring partial discharge. [0003] It is found that there are different degrees of deformation of the aluminum sheath in the places where the in-service cables have a slight ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01R31/12
CPCG01N33/005G01R31/1272
Inventor 严有祥徐子峻林智雄周文俊尤天鹏陈朝晖
Owner XIAMEN ELECTRIC POWER SUPPLY COMPANY OF STATE GRID FUJIAN ELECTRIC POWER