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70MPa-resistant standard hydrophone and manufacturing method thereof

A hydrophone, a standard technology, applied in instruments, measuring devices, measuring ultrasonic/sonic/infrasonic waves, etc., to achieve the effects of improving pressure bearing capacity, increasing bonding area, and improving pressure stability

Inactive Publication Date: 2020-08-14
THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of PZT piezoelectric materials to design 70MPa-resistant standard hydrophones has not been reported yet.

Method used

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  • 70MPa-resistant standard hydrophone and manufacturing method thereof
  • 70MPa-resistant standard hydrophone and manufacturing method thereof

Examples

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Embodiment

[0029] Example: as attached figure 1 As shown, this 70MPa-resistant standard hydrophone mainly includes a piezoelectric ceramic spherical shell 1, a high-strength composite foam 2, a support structure 5, a high-voltage resistant connector 8 and a high-voltage resistant watertight cable 10, and the piezoelectric ceramic ball The shell 1 is formed by bonding two hollow hemispheres, and a high-strength composite foam 2 is placed inside it. The high-strength composite foam 2 is composed of two hollow hemispherical structures. The inner wall of 1 is tightly connected; the lower half of the piezoelectric ceramic spherical shell 1 extends downward to open a small hole for the wire to be connected, and is connected to the support structure 5 through the rubber decoupling part 3, and is coated on the outer circumference of the piezoelectric ceramic spherical shell 1. There is a waterproof and sound-permeable layer 4; a through hole is provided inside the support structure 5 for the pas...

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Abstract

The invention discloses a 70MPa-resistant standard hydrophone and a manufacturing method thereof, and relates to the field of underwater acoustic measurement. The 70MPa-resistant standard hydrophone mainly comprises a piezoelectric ceramic spherical shell, high-strength composite foam, a rubber decoupling element, a support structure, a waterproof acoustic transmission layer, a pre-amplifier, a high-pressure-resistant connector and a high-pressure-resistant watertight cable, wherein the piezoelectric ceramic spherical shell is a thick-wall hollow piezoelectric ceramic spherical shell with thethickness not smaller than one tenth of diameter, and is formed by bonding two hemispheres, the high-strength composite foam is located in the piezoelectric ceramic spherical shell and is tightly connected with the inner wall of the piezoelectric ceramic spherical shell through an adhesive, and the hydrophone is internally provided with the impact-resistant pre-amplifier, so that the pressure stability of the hydrophone is improved. According to the structural form and the manufacturing process, the maximum working depth of the hydrophone is ensured to be 7000 meters, and the hydrophone has good pressure stability and is suitable for being used as a standard hydrophone for underwater sound pressure calibration and underwater sound measurement under the condition of ultra-high hydrostatic pressure.

Description

technical field [0001] The invention relates to the field of underwater acoustic measurement, in particular to a 70MPa-resistant standard hydrophone and a manufacturing method thereof. Background technique [0002] The development of marine industry in the 21st century is an important part of the national economy. Our country has a vast territorial sea, and there are rich wealth in the ocean. For example, my country's vast South China Sea is rich in oil and gas resources. The total geological resources of oil and natural gas in the entire South China Sea Basin Group account for one-third of my country's total oil and gas resources, of which 70% are located in deep sea areas. Therefore, with the continuous development of ocean development, the development and utilization of deep water resources has been put on the agenda. On June 27, 2012, the manned submersible "Jiaolong" designed and integrated by my country successfully broke through the 7,000-meter mark and reached 7,06...

Claims

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Application Information

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IPC IPC(8): G01H11/08
CPCG01H11/08
Inventor 何涛陈毅
Owner THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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