Shock-resistant high-temperature-resistant low-drift capacitance monitoring device

Abstract

The invention belongs to the technical field of mechanical design, and particularly relates to an anti-seismic high-temperature-resistant low-drift capacitance monitoring device. The power amplifier comprises a silica gel outer sheath, a heat insulation protection layer, a silica gel inner sheath and an amplification circuit module, the silica gel outer sheath wraps the heat insulation protection layer, the heat insulation protection layer wraps the silica gel inner sheath, and the silica gel inner sheath wraps the amplification circuit module. According to the capacitance type liquid level meter, liquid level signals can be monitored by the capacitance type liquid level meter, and the measurement precision of capacitance signals related to the liquid level can be guaranteed in the environments of earthquakes, temperature shock and high temperature.

Description

technical field [0001] The invention belongs to the technical field of mechanical design, and in particular relates to an anti-seismic high-temperature-resistant and low-drift capacitance monitoring device. Background technique [0002] According to the feedback from the Fukushima accident, the spent fuel pool (hereinafter referred to as the spent pool) lost its normal cooling under the severe accident conditions of power failure in the entire plant, and the decay heat in the spent fuel pool was taken away by the evaporation of the pool water, resulting in a drop in the liquid level of the pool . Because the liquid level and temperature measuring devices of the exhaust tank were damaged in the accident, the on-site emergency personnel could not accurately know the actual working conditions in the exhaust tank and take effective countermeasures in time, resulting in the continuous uncontrollable state of the exhaust tank and missing the best time for rescue. Timing, ultimate...

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Problems solved by technology

[0004] Defect 1: The primary amplification module of the existing spent fuel pool liquid level measuring instrument is located on the bank of the spent fuel pool. In a serious accident, there will be a sudden high temperature shock, and it is difficult to maintain the normal operation of the equipment during the high temperature shock

[0005] Defect 2: The primary amplification module of the existing spent fuel pool liquid level measurement instrument is located on the bank of the spent fuel pool. After a serious accident, there will be a long-term high-temperature environment, and it is difficult to maintain the liquid level measurement accuracy in high temperature

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