Acoustic windows and systems for large-scale planar transducer arrays

Abstract

The invention provides a large-size planar energy converter array acoustic window and system, and the window comprises a sound transmission film and an enclosure frame. The sound transmission film is connected to one side surface of the enclosure frame. The sound transmission film is provided with a closed elastic groove. The outer edge of the enclosure frame is provided with a heat dissipation step frame. The thickness of the heat dissipation step frame is the same as the thickness of the sound transmission film. The sound transmission film is made of industrial pure titanium TA2. The enclosure frame employs a rigid rectangular structural part. The sound transmission film is made of industrial pure titanium TA2, thereby improving the reliability of an energy converter which works in the sea for a long time. The corrosion resistance performance of a TA2 material is better than the corrosion resistance performance of a conventional stainless steel material. The plane of the window tends to constant amplitude vibration, and improves the efficiency of sound transmission.

Description

technical field [0001] The invention relates to underwater acoustic engineering technology, in particular to a sound-permeable window of a large-scale plane transducer array and a system. Background technique [0002] The cladding materials used for the acoustic windows of traditional transducers in China are mostly rubber or polyurethane materials. After such materials are soaked in seawater for a long time, due to the corrosion of seawater, the growth of sea organisms and the influence of their own water permeability, the life of the transducer itself is relatively short. Short, so changing the sound-transmitting material of the transducer to metal will greatly improve its life and reliability. [0003] Commonly used metal materials for transducer sound windows are generally austenitic stainless steel and titanium alloys. Stainless steel processing has excellent welding performance, but the weight is heavier, corrosion resistance, and sound transmission performance are far...

AI Technical Summary

Problems solved by technology

However, titanium alloy materials are expensive and difficult to process. Therefore, in the application of large-scale transducers, it is necessary to comprehensively consider its characteristics for design.

[0004] When applied to a large-size planar array transducer, the titanium alloy plate cannot be designed too thick due to sound transmission requirements, resulting in insufficient structural strength of the sound transmission window, and insufficient structural strength directly affects the sealing of the transducer and the transparency of the plate. The impact of the forced vibration of the sound itself, thus affecting the performance of the entire transducer

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