Cable pyrolysis gas collecting device

By designing a cable pyrolysis gas collection device including transparent heat-resistant gas cylinders, gas collection sleeves and high-pressure bottles, the problems of temperature control difficulties and incomplete gas collection in the prior art are solved, and the diversity of gas collection and measurement accuracy are achieved.

CN119715040APending Publication Date: 2025-03-28STATE GRID HENAN ELECTRIC POWER CO TONGXU COUNTY POWER SUPPLY CO
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Patent Information

Application Number
CN202411950302.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing cable pyrolysis gas collection device is difficult to control the temperature during the pyrolysis process, resulting in incomplete gas collection and unstable gas pressure, affecting the accuracy of subsequent measurements.

Method used

A cable pyrolysis gas collection device is designed, including a transparent and heat-resistant gas collection cylinder, a gas collection sleeve and a high-pressure bottle. The air flow is controlled through pressure changes, ensuring uniform collection of characteristic gases, and reducing the gas collection pressure through adaptive expansion of the transparent gas collection cylinder.

Benefits of technology

A more complete and uniform gas collection is achieved, reducing gas collection pressure, maintaining the stability of gas pressure, and supporting diverse and accurate measurement methods, including contact reaction measurement and infrared absorption spectroscopy measurement.

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Abstract

The invention relates to a cable pyrolysis gas collecting device in the technical field of cable fault diagnosis and early warning, which comprises a gas collecting bottle, a gas collecting sleeve sleeved outside a cable and a high-pressure bottle for storing high-pressure air, and is characterized in that the gas collecting bottle, the gas collecting sleeve and the high-pressure bottle are respectively provided with a first pressure gauge, a second pressure gauge and a third pressure gauge for measuring internal pressure; a bottle body of the gas collection bottle is made of a transparent heat-resistant material capable of expanding along with internal pressure; the gas collection sleeve comprises a heat transfer sleeve section, heat insulation sleeve sections are connected to the two ends of the heat transfer sleeve section, transition sleeve sections are connected to the outer ends of the two heat insulation sleeve sections, sealing hoops used for clamping and extruding the transition sleeve sections to be tightly attached to a cable for sealing are clamped to the end walls of the outer ends of the two transition sleeve sections in a sleeving mode, and a gas inlet pipe and a gas outlet pipe are arranged on the end walls of the inner ends of the two transition sleeve sections respectively. The air inlet pipe and the air outlet pipe are respectively and correspondingly communicated with openings of the high-pressure bottle and the air collecting bottle through guide pipes with control valves; the collecting device can more completely collect characteristic gas, and the diversity and accuracy of measurement are improved.
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