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Acoustic detection device

A sound wave detection and sound wave technology, which is applied in the field of sound wave detection devices, can solve problems such as unsatisfactory sound insulation effect and unsatisfactory accuracy of sound wave detection devices, and achieve the effect of broadening the application range

Inactive Publication Date: 2015-09-23
CNPC GREATWALL DRILLING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The sound insulation body of the traditional acoustic wave detection device composed of the above-mentioned shell and shaft has the problem of unsatisfactory sound insulation effect, which directly leads to unsatisfactory accuracy of the acoustic wave detection device

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] This embodiment is to improve the shell of the sound insulator, the setting of the shell is as follows Figure 5 shown.

[0079] exist Figure 5 Among them, the reference numeral 1 represents the shell of the sound insulator, and the shell 1 is engraved with a plurality of grooves 2', and the shape of the groove 2' is a deformed triangle (groove width is, for example, 5 mm). The direction of propagation of the sound wave at the receiver (e.g. Figure 5 The distances A and B between any two layers of adjacent grooves 2' in the horizontal direction) are equal (for example, 10mm or 16mm), and the distance is: any two layers of adjacent grooves in the above-mentioned sound wave propagation direction Among them, the distance from the end of one layer of grooves that is relatively closer to the sound wave emitter that is farthest from the sound wave emitter to the end of the other layer of grooves that is closest to the sound wave emitter.

[0080] The shape of the above-men...

Embodiment 2

[0085] This embodiment is to improve the axis of the sound insulator, and the setting method of the axis is as follows Figure 6 shown.

[0086] exist Figure 6 Among them, the reference numeral 3 represents the shaft of the sound insulator, on which a plurality of grooves 4' are engraved. The distances A1 and B1 between any two layers of adjacent grooves 4' are equal (for example, 10mm or 16mm), and the distance is: in any two layers of adjacent grooves in the above-mentioned sound wave propagation direction, relatively more The distance between the end of one layer of grooves close to the sound wave emitter that is farthest from the sound wave emitter and the end of the other layer of grooves that is closest to the sound wave emitter.

[0087] Here, the shape of the slot 4' is not limited to a deformed triangle, and other shapes, such as a trapezoid, can also be used, as long as the shape can make the slot not have mutually parallel surfaces in the sound wave propagation d...

Embodiment 3

[0091] This embodiment is a quasi-periodic improvement on the distribution of the slots on the shell of the sound insulator, that is to say, the figure 2 The shown casing with grooves distributed at equal intervals is improved to a casing with grooves whose pitches are distributed in a quasi-periodic manner, and the specific improvement is as follows Figure 7 shown.

[0092] exist Figure 7 Among them, reference numeral 1 represents the shell of the sound insulator, and a plurality of grooves 21 are engraved on the shell 1, and the shape of the grooves 21 is rectangular (groove width is, for example, 5mm), and any two layers in the above-mentioned sound wave propagation direction The distances A', B' between adjacent grooves 21 are not equal, and each distance is distributed in a quasi-periodic manner (such as Fibonacci, morse, etc.), and the distance is: any two distances in the above-mentioned sound wave propagation direction Among the grooves of adjacent layers, the dist...

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Abstract

The invention provides an acoustic detection device. The acoustic detection device comprises an emitter, a receiver and a sound insulator, wherein the sound insulator is positioned between the emitter and the receiver; and the sound insulator is provided with a shell and a shaft. The acoustic detection device is characterized in that: a plurality of grooves are carved on the shell and / or the shaft and distributed at an interval between any two layers of adjacent grooves in an acoustic transmission direction according to a quasi-period mode.

Description

technical field [0001] The present application relates to a sound wave detection device, in particular to a sound insulation body of the sound wave detection device. Background technique [0002] Acoustic detection devices are generally composed of transmitters, receivers, sound insulation and electronic circuits. The sound isolator is the mechanical structure that connects the transmitter to the receiver. The design of the sound insulator should not only consider the strength requirements of the mechanical connection, but also consider the sound insulation effect on the sound wave. There are two physical quantities for the evaluation of sound insulation effect: sound attenuation strength and sound delay. The sound attenuation intensity refers to the energy attenuation of a certain component of the sound wave at a specific frequency, measured in decibels (dB). Acoustic delay refers to the speed of sound waves propagating on the sound insulation body, measured by slowness ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/00G01V1/52E21B47/14
Inventor 杨秦山肖加奇潘良根
Owner CNPC GREATWALL DRILLING ENG