Hydraulic driving system of underwater acoustical generator

Abstract

The invention discloses a hydraulic driving system of an acoustical generator underwater. The system utilizes high pressure hydraulic oil as a motive power source and controls more than two independent oil cylinders to be served as vibration output, each oil cylinder corresponds to an acoustic radiation element of the acoustical generator, so that a great deal of output is achieved. Meanwhile, each oil cylinder is controlled by two high-speed magnetic valves, so that connection control of flow quality is achieved, and due to the fact that the high-speed magnetic valves are high in response speed, the problems that a traditional hydraulic system is low in the response speed and cannot adapt to high-frequency driving are solved. The high-speed magnetic valves are high in response speed, high in reliability, simple in structure, small in size, low in failure rate and not high in requirements on clean degree of the hydraulic oil, besides, pressure drop on the valves is large, and interference problem cannot occur under a double-driving model. The hydraulic driving system of the acoustical generator underwater is capable of knocking a membrane board to radiate high-frequency sound fields, and therefore a range of a radiated sound field of the hydrostatic drive acoustical generator is expanded to high frequency.

Description

Technical field [0001] The invention relates to a hydraulic drive system, in particular to a hydraulic drive system of an underwater sounder. Background technique [0002] In acoustic minesweeping operations, the underwater sound generator is the most basic unit, and its types are mainly mechanical vibration type, hydraulic drive type, electric type, piezoelectric or magnetostrictive type, etc. The hydraulically driven sound generator has a large hydraulic power / weight ratio, can generate a strong low-frequency (including infrasound) sound field, has a strong low-frequency sound ability, and the low-frequency sound source level can exceed 190dB, and can be achieved underwater by controlling the hydraulic oil The sound field frequency spectrum control has obtained the advantages of low frequency and high sound level radiation sound field in a certain frequency range, and has been widely used. [0003] The existing hydraulic sounder mainly has the following disadvantages: [0004] (1...

AI Technical Summary

Problems solved by technology

Compared with the electric system, the hydraulic system responds slowly and cannot adapt to the requirements of high-frequency drive

Moreover, the high-frequency sound field response of the rigid piston radiator has strong directivity, which cannot meet the requirements of minesweeping operations.

[0006] (2) Geometric size and weight are relatively large

[0007] The oil tank, oil pump and other components of the existing hydraulic sounder drive system are arranged independently, and there are many pipelines and complicated wiring, which makes the size and weight of the sounder relatively large, and the scope of application is limited.

[0008] (3) The system is complex and inconvenient to use

[0009] The existing hydraulic drive system adopts the servo control method, which has very high requirements on the filtration accuracy of hydraulic oil, resulting in complicated application preparation work, often requiring multiple filtration processes to ensure the accuracy of hydraulic oil

In addition, the existing hydraulic drive system requires more auxiliary units to complete the main functions, such as an independent cooling device, which increases the length and complexity of the system pipeline and reduces the system efficiency

[0010] (4) Single motion output form

[0011] The existing hydraulic drive system only has a single motion output

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