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Preparation method of shielding layer of underwater acoustic transducer

A technology of underwater acoustic transducer and shielding layer, applied in the direction of sensors, electrical components, etc., can solve the problems of complex fixing method of shielding net and high requirements on the shape of the transducer, and achieve high reliability, little impact on acoustic performance, and shielding. good performance

Active Publication Date: 2021-02-12
上海船舶电子设备研究所
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  • Application Information

AI Technical Summary

Problems solved by technology

The shielding method of the mesh metal layer used in the past is complicated to fix, and the shape of the transducer is high.

Method used

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  • Preparation method of shielding layer of underwater acoustic transducer
  • Preparation method of shielding layer of underwater acoustic transducer
  • Preparation method of shielding layer of underwater acoustic transducer

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preparation example Construction

[0031] Such as Figure 4 As shown, the preparation method of the underwater acoustic transducer shielding layer provided by the present invention includes:

[0032] Step 1. Pouring a layer of polyurethane glue on the surface of the underwater acoustic transducer wafer, and curing it in an oven at 80°C;

[0033] Step 2. Install screws and soldering tabs on the metal shell, and lead a bare wire from the soldering tab on the metal shell of the transducer;

[0034] Step 3. Put the welded underwater acoustic transducer into the oven to preheat;

[0035] Step 4, using chemical reagents to treat the polyurethane on the surface of the preheated transducer;

[0036] Step 5. Apply a layer of conductive adhesive evenly on the surface of polyurethane, connect the conductive adhesive to the shell with bare wires, and put it in an oven to cure;

[0037] Step 6, performing surface treatment on the cured conductive adhesive layer;

[0038] Among them, the transducer potting polyurethane g...

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Abstract

The invention provides a method for preparing the shielding layer of an underwater acoustic transducer. A layer of polyurethane glue is potted on the surface of the underwater acoustic transducer wafer, and put into an oven at 80°C for curing; Lead out a bare wire from the solder piece on the metal shell of the transducer; put the welded underwater acoustic transducer into the oven to preheat; use chemical reagents to treat the polyurethane on the surface of the preheated transducer; Apply a layer of conductive adhesive, connect the conductive adhesive to the shell with bare wires, and put it in an oven to cure; surface treatment is carried out on the cured conductive adhesive layer. The present invention can provide a simple and efficient shielding layer for underwater acoustic transducers, which is easy to operate, does not generate air bubbles, and has little influence on the acoustic performance of the transducer. The manufactured shielding layer of the underwater acoustic transducer has good shielding performance and reliability. High, and not limited by the structural fixing method, it can adapt to transducers of any shape.

Description

technical field [0001] The invention relates to the technical field of underwater acoustic engineering, in particular to a method for preparing a shielding layer of an underwater acoustic transducer. Background technique [0002] In electronic equipment, electromagnetic interference energy is generally transmitted in two ways: conductive coupling and radiative coupling. In order to meet the requirements of electromagnetic compatibility, the conductive coupling needs to be suppressed by using filtering technology, that is, the EMI filter device is used to suppress it; the radiative coupling needs to be suppressed by shielding technology. In the current situation where the electromagnetic spectrum is becoming increasingly dense, the electromagnetic power density per unit volume is increasing sharply, and a large number of high and low level devices or equipment are used in a mixed manner, which leads to the deteriorating electromagnetic environment of equipment and systems, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R31/00
CPCH04R31/00H04R2231/003
Inventor 陈庆瑞胡健辉王敏慧欧阳荀刘佳李科
Owner 上海船舶电子设备研究所
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