Method for detecting flushing noises of pedestal pan by sound power level parallelepiped measurement surface method

A technology of parallelepiped and sound power level, which is applied in the direction of measuring ultrasonic/sonic/infrasonic waves, measuring devices, instruments, etc., to achieve the effect of improving scientificity

Active Publication Date: 2019-05-14
李文杰
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Problems solved by technology

[0004] The technical problem to be solved in the present invention is to provide a slow time weighting characteristic "S" of the equivalent sound level of the weighted equivalent sound level of the sound level meter to the cumulative percentage sound power level L on the parallel

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  • Method for detecting flushing noises of pedestal pan by sound power level parallelepiped measurement surface method
  • Method for detecting flushing noises of pedestal pan by sound power level parallelepiped measurement surface method
  • Method for detecting flushing noises of pedestal pan by sound power level parallelepiped measurement surface method

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[0131] The following describes the present invention in detail with reference to the accompanying drawings and preferred embodiments, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0132] This embodiment takes the flushing noise detection of a floor-standing ceramic toilet product produced in Tangshan, Hebei, with an internal structure of a jet siphon type and a dual-stage nominal water consumption of 6L and 3L respectively, under the condition of full flushing water consumption as an example.

[0133] The specific detection method is carried out according to the following steps:

[0134] (1) Sample installation and commissioning

[0135] 1.1 Sample quantity and specifications

[0136] 3 samples of porcelain or stoneware floor-standing toilets of the same type, specification, and size produced by the same manufacturer and batch are used a...

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Abstract

The invention relates to a method for detecting flushing noises of a floor type ceramic pedestal pan. The detection steps include sample installation and debugging, determination of a sound source reference body and a parallelepiped measurement surface, sound pressure level measurement, sound power level calculation and background noise, test environment and weather condition correction, and result evaluation. The method is specially characterized in that the flushing noises of the pedestal pan, represented by the cumulative percent sound power level LWA(50), on the parallelepiped measurementsurface are accurately and quantitatively detected by applying a slow time weighting characteristic "S" of the A weighting equivalent sound level of a sound level meter. It is stipulated that the A weighting cumulative percent time average sound pressure levels L'pAi(ST)(50) and LpAi(B)(50) of the flushing noises and background noises on the parallelepiped measurement surface are measured; the sound power level LWA(50) of the flushing noises in a normal flushing period is calculated; and meanwhile, a result evaluation basis is provided. The method fills the blank of the technical field of pedestal pan flushing noise detection; the scientificity of the method and the comparability of a result are achieved; and the technical support can be provided for ceramic enterprises to improve production processes and standardize market order.

Description

technical field [0001] The present invention relates to a noise quantitative testing method, specifically a slow-time weighting characteristic "S" of a sound level meter A-weighted equivalent sound level to measure the sound power level L by a cumulative percentage on a parallelepiped surface. WA(50) The invention discloses a method for detecting the flushing noise of a characterized floor-type ceramic toilet, and belongs to the technical field of ceramic physical and chemical performance detection. Background technique [0002] The noise generated during the toilet flushing process belongs to the category of liquid dynamic noise, which is roughly composed of three parts: the structural vibration noise of the pipeline, the fluid noise of the water and the cavitation noise. In the area, the pipeline forms mechanical vibration under the action of the excitation force; while the fluid noise comes from the pressure and flow velocity changes of the liquid, mainly including the no...

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Application Information

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IPC IPC(8): G01H17/00
Inventor 李文杰郝凌云章雪松郝秋伟李丽华
Owner 李文杰
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