Sensor protection device for transformer oil gas on-line monitoring system

Abstract

The invention discloses a sensor protection device for a transformer oil gas on-line monitoring system. The device comprises a box body (1), a door (2) is connected with the box body (1), a sealing device (3) is arranged between the box body (1) and the door (2), a double-layer stainless steel plate (5) which is padded with rock wools (4) is arranged on the side wall of the box body (1), air channel through holes (6) and electric cable through holes (7) are arranged on the side wall of the box body (1), and a temperature controller (8) is arranged in the box body (1). According to the sensor protection device, the interior of the box body is maintained at constant temperature and constant humidity, electromagnetic signals can be shielded, a sensor can be prevented from being affected by outside electromagnetic signal interferences and changes of temperature and humidity in the device, accuracy of acquired data can be guaranteed, and monitoring precision of the system is improved.

Description

technical field [0001] The invention relates to a device for an on-line monitoring system of gas in transformer oil, in particular to a sensor protection device for an on-line monitoring system of gas in transformer oil, which can prevent external temperature and humidity changes and electromagnetic interference, ensure stable sampling data, and improve monitoring accuracy. Background technique [0002] The gas online monitoring system in transformer oil is a device for online monitoring, analysis and fault diagnosis of the content of dissolved gases (hydrogen, carbon monoxide, methane, ethane, ethylene, acetylene, etc.) Oil-immersed high-voltage equipment such as furnace transformers, reactance transformers, and transformers. At present, most transformer oil gas online monitoring systems are equipped with oil circulation unit, degassing unit, gas sample separation unit, gas sample signal acquisition unit, data analysis unit and control unit. When installing, connect the oi...

AI Technical Summary

Problems solved by technology

Since the sensor in the existing gas sample signal acquisition unit is directly exposed and fixed inside the body of the gas online monitoring system in transformer oil, it is extremely susceptible to interference from external electromagnetic signals and changes in temperature and humidity inside the body, so that the collected data appear Fluctuations affect the accuracy of collected data and reduce the monitoring accuracy of the system

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