A low-frequency underwater fluid sound-generating device

By designing the series and synchronous driving of power components, rotary components and multi-stage blade transducers in low-frequency underwater fluid sounding devices, the shortcomings of existing low-frequency hydroacoustic transducers in wide-band and high-power radiation are solved, and efficient low-frequency acoustic radiation is achieved.

CN119383517BActive Publication Date: 2025-04-01NAT UNIV OF DEFENSE TECH
1 Cites 0 Cited by

Patent Information

Application Number
CN202411966621.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-04-01
Estimated Expiration
2044-12-30

AI Technical Summary

Technical Problem

Existing low-frequency hydroacoustic transducers cannot achieve wide-band and high-power radiation at the same time, and it is difficult to maintain high-efficiency energy in the low-band, and the sound source intensity is not high.

Method used

A low-frequency underwater fluid sounding device is designed, including a power assembly, a rotating assembly and a transducer assembly. By connecting the multi-stage blade transducer in series, rotating and synchronously, wide-band and high-power radiation are achieved.

Benefits of technology

It realizes efficient production of low-frequency/very low-frequency band high-power acoustic radiation underwater, has wide band, high sound intensity, high power, large radiation area and high vibration amplitude, and the device is compact, economical, stable and reliable.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The present application belongs to the technical field of underwater acoustic transducers, and relates to a low-frequency underwater fluid sound-generating device, comprising: a power assembly, a rotating assembly, and a transducer assembly connected in sequence; the transducer assembly comprises: a central axis and a multi-stage blade transducer connected in series on the central axis; the power assembly converts the chemical energy of the fuel into fluid kinetic energy to drive the rotating assembly; the rotating assembly rotates under the impact of the power assembly, and drives the central axis of the transducer assembly to rotate, so as to convert the fluid kinetic energy into mechanical kinetic energy; the blade transducer of the transducer assembly is linked with the central axis, so that the blade structure of the blade transducer rotates and swings, generating a water flow whose flow rate changes periodically with time, forming low-frequency sound radiation, so as to convert mechanical kinetic energy into sound energy, and realize low-frequency underwater fluid sound generation. The present application can realize wide frequency band and high-power radiation at the same time, and the sound source intensity is high.
Need to check novelty before this filing date? Find Prior Art