Deepwater pressure compensation type extremely-low-frequency bending transmitting transducer system

Abstract

The invention relates to the technical field of transducers, in particular to a deepwater pressure compensation type extremely-low-frequency bending type transmitting transducer system which comprises a bending type transmitting transducer, a signal source, a power amplifier, a high-pressure gas compressor, a high-pressure hose and a bearing cable, and the high-pressure gas compressor comprises a compressor, a controller, a pressure regulating valve set and an electronic pressure gauge. An external overpressure prevention structure is arranged in the bending type transmitting transducer, an internal pressure prevention structure is arranged outside the bending type transmitting transducer, a depth sensor is arranged outside the bending type transmitting transducer, and an electronic pressure gauge is arranged in the bending type transmitting transducer. The transmitting transducer is arranged in deep water, the pressure intensity of an inner cavity of the bent transducer is adjusted in real time through the dry-end high-pressure gas compressor and the high-pressure hose, the pressure intensity is kept consistent with the water pressure, and therefore the pressure compensation effect is achieved; and the limitation of the working depth of the transducer is broken.

Description

technical field [0001] The invention relates to the technical field of transducers, and specifically relates to a deep-water pressure-compensated extremely low-frequency bending type transmitting transducer system. Background technique [0002] In the field of underwater acoustics, the transmitting transducer is the most basic component. With the development of marine equipment, there is an urgent need for deep-water, low-frequency, small-size, broadband, and high-power transmitting transducers, but it is contradictory to achieve some of the above technical indicators at the same time, and a balance must be sought among the indicators point. There are many applications of transmitting transducers in shallow water environments, but they are limited in deep sea areas, because the ability to apply prestress or high-pressure gas inside the transducer is limited, and passive air pressure compensation such as airbags and air chambers However, due to the large compression volume ...

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Problems solved by technology

[0003] The bending transducer has the characteristics of low frequency, light weight, and small size. In addition, it still has the advantages of low conductance Q value and less transient wave number of the transmitted pulse signal. Due to its own structure, if there is no Internal pressure compensation, it is usually difficult to resist the pressure of deep water, most of them can only work in the water depth of 200 meters, the application range is limited

In current practical applications, it is very rare to use the idea of ​​air pressure compensation to extend the working water depth of bending transducers to deep sea

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