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A flow guide device for measuring underwater jet noise by reverberation method

A technology of diversion device and reverberation method, which is applied in the direction of measuring device, measuring ultrasonic/sonic wave/infrasonic wave, instrument, etc. It can solve the problem of water level change in non-nechoic pool or water tank, and achieve small flow resistance and test signal noise The effect of increasing the ratio and improving the sound energy density

Active Publication Date: 2018-04-17
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a diversion device for measuring underwater jet noise by the reverberation method, which can solve the problem of water level change in non-anechoic pools or tanks that exists when the reverberation method is used to measure the radiated sound power of jet noise

Method used

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  • A flow guide device for measuring underwater jet noise by reverberation method
  • A flow guide device for measuring underwater jet noise by reverberation method
  • A flow guide device for measuring underwater jet noise by reverberation method

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] to combine Figure 1 to Figure 5 , the present invention includes a water inlet pipe 1, a first ball stop valve 11, a pipe 12, a pipe 13, an elbow 14, a diversion pipe 2, a tee 21, a ball stop valve 22, a second ball stop valve 23, a pipe 24, an elbow Head 25, pipe 26, pipe 27, pipe 28, steady flow box 3, fixed pipe 31, eyebolt 32, stainless steel interface 33, stainless steel clip 34, stainless steel clip 35, steel pipe 36, height adjuster 4, rebar 41, screw thread Steel 42, triangular support 43, water outlet pipe 5.

[0018] A diversion device for measuring underwater jet noise by the reverberation method, comprising a water inlet pipe, a diversion pipe, a steady flow box, a height regulator, and a water outlet pipe, and one end of the water inlet pipe is in a non-neutral pool or a water tank , the other end of the water i...

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Abstract

The invention provides a flow guide device used for measuring underwater jet flow noises by a reverberation method. The flow guide device comprises a water inlet pipe, a flow guide pipe, a flow stabilizing box, a height adjuster and a water outlet pipe, wherein one end of the water inlet pipe is inserted into a non-noise-eliminating water pool or water tank; the other end of the water inlet pipe is connected with the flow guide pipe; one end of the flow guide pipe is connected with the water inlet pipe and the other end of the flow guide pipe is connected with the flow stabilizing box; the flow stabilizing box is fixedly provided with the flow guide pipe; the flow stabilizing box is arranged on the height adjuster; the height adjuster can be used for freely adjusting the height in the vertical direction; and the water outlet pipe is located on the side face of the flow stabilizing box. According to the flow guide device used for measuring the underwater jet flow noises by the reverberation method, when the reverberation method is used for measuring radiation sound power of the underwater jet flow noises, the volume of water in the non-noise-eliminating water pool or water tank is not increased by jet flow and the jet flow radiation noises are not transmitted to the outer side, and the noises of the outer side are not transmitted into the non-noise-eliminating water pool or water tank, so that the measurement of the radiation sound power of the underwater jet flow noises is not influenced.

Description

technical field [0001] The invention relates to a flow guide device, in particular to a flow guide device used for measuring underwater jet flow noise with a reverberation method, and belongs to the field of acoustic measurement. Background technique [0002] The radiated sound power of underwater jet noise is generally measured by the reverberation method, by dividing the non-anechoic pool or water tank into a jet area and a measurement area, spraying water from a nozzle in the jet area, and using one or more The hydrophone collects the spatial average sound pressure, and after correcting the room constant of the non-anechoic pool or water tank, the radiated sound power of the noise caused by jet mixing can be obtained, but when the reverberation method is used to measure the radiated sound power of the underwater jet noise When the power is high, there are still the following deficiencies: First, the jet area of ​​the non-neutral pool or water tank is connected with the me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00
Inventor 刘永伟商德江
Owner HARBIN ENG UNIV
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