Double-piston electromagnetic type ultra-low-frequency underwater sound transducer and mounting and transduction methods thereof

Abstract

The invention provides a double-piston electromagnetic type ultra-low-frequency underwater sound transducer and mounting and transduction methods thereof. The underwater sound transducer comprises a watertight shell with the open upper part and lower part, a shell upper pressing plate, a shell lower pressing plate, an upper radiant surface, a lower radiation surface, an upper radiant surface pressing plate, a lower radiant surface pressing plate, an electromagnetic driving mechanism, an upper spring set, a lower spring set, upper watertight rubber and lower watertight rubber; the upper radiantsurface and the lower radiation surface are arranged in the centers of an upper opening and a lower opening of the watertight shell correspondingly; the electromagnetic driving mechanism, the upper spring set and the lower spring set are all arranged in the watertight shell, the electromagnetic driving mechanism is arranged in the center of the watertight shell, and the upper spring set and the lower spring set are symmetrically arranged at the edges of the watertight shell; the electromagnetic driving mechanism drives the upper radiation surface and the lower radiation surface to synchronously retract; and the upper spring set and the lower spring set drive the upper radiation surface and the lower radiation surface to rebound correspondingly. The double-piston electromagnetic type ultra-low-frequency underwater sound transducer has the characteristics of being high in conversion efficiency, less in energy consumption, small in size, low in weight, ultra-low in frequency, high in power and simple in structure.

Description

technical field [0001] The invention belongs to the technical field of underwater acoustic transducers, and in particular relates to a double-piston electromagnetic ultra-low frequency underwater acoustic transducer, an installation method and an energy conversion method. Background technique [0002] The transmission of information requires a carrier. On land, information transmission can be achieved through radio waves. However, it does not work in seawater. At present, only sound waves can be used. The propagation performance of sound waves in the ocean is very good, and the propagation attenuation is very small, which is completely suitable for people's needs. The use of underwater acoustic transducers can radiate sound waves outward. Traditional underwater acoustic detection technology is mainly concentrated in high-frequency and low-frequency bands, and due to the limitations of passive sonar itself, it cannot independently realize the needs of submarine detection. The...

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Problems solved by technology

[0004] Although various methods can be used to realize the ultra-low frequency high-power transmission of the transducer, there is a problem that the transducer is large in size and heavy in weight. In the past, most types of ultra-low frequency high-power transducers were more or less Few have the disadvantages of large volume, heavy weight, inconvenient to carry, etc., and the traditional single-sided piston electromagnetic transducer has a low operating frequency, but its transmission voltage response is also relatively low, which cannot meet the requirements for high power in actual work , how to achieve ultra-low frequency high-power transmission with small size and light weight has long plagued people

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