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我们研制了一种带毛细孔的能耐150℃和1420atm的高温高压声接收换能器(水听器),并在直径为70mm,高为290mm的圆筒形腔体内用就地互易法在上述高温高压条件下进行了校准.在频带为10Hz—10kHz的频率范围内,接收电压灵敏度为—195±1.5dB(0dB为1V/μPa),水平方向性的不均匀度小于±1.5dB.在常压到1420atm的压力范围内,接收电压灵敏度随压力的变化小于1dB;在150℃时的接收电压灵敏度,较常温下的接收电压灵敏度,只降低3dB.
We have developed a capillary with a high temperature and pressure capable of 150 ℃ and 1420atm sound-receiving transducer (hydrophone), and in the diameter of 70mm, height 290mm cylindrical cavity with the law of reciprocity The above high temperature and high pressure conditions were calibrated in the frequency band of 10Hz-10kHz, the receiving voltage sensitivity of -195 ± 1.5dB (0dB of 1V / μPa), the horizontal non-uniformity of less than ± 1.5dB. Atmospheric pressure to 1420atm pressure range, the receiving voltage sensitivity with pressure changes less than 1dB; at 150 ℃ receiver voltage sensitivity, compared with the receiving voltage sensitivity at room temperature, only to reduce 3dB.