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A Method for Determining the Weighting Coefficients of Flow Velocity in Each Channel of Multi-channel Ultrasonic Flowmeter

A technology of ultrasonic flowmeter and weighting coefficient, which is applied in the direction of measuring flow/mass flow, liquid/fluid solid measurement, measuring device, etc., which can solve the problems of complex process and achieve the effect of reducing cost

Active Publication Date: 2019-08-23
SOUTH CHINA UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the existing multi-channel channel weight coefficients still lack a more unified determination method, and the process is complicated

Method used

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  • A Method for Determining the Weighting Coefficients of Flow Velocity in Each Channel of Multi-channel Ultrasonic Flowmeter
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  • A Method for Determining the Weighting Coefficients of Flow Velocity in Each Channel of Multi-channel Ultrasonic Flowmeter

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings.

[0015] Such as figure 1 As shown, the process flow of the method for determining the weighted coefficient of the flow velocity of each channel of the multi-channel ultrasonic flowmeter includes:

[0016] Step 10 establishes a projection model of a single channel of the multi-channel ultrasonic flowmeter;

[0017] Step 20 is based on a single channel projection model, deriving the average flow velocity formula of the channel coverage area;

[0018] Step 30 calculates the weighted coefficients of the flow velocity of each channel of the multi-channel ultrasonic flowmeter according to the Reynolds number and the roughness of the pipe wall.

[0019] The projection model of a single channel of the above-mentioned multi-channel ultrasonic flowmeter is ...

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Abstract

The invention discloses a determining method for a flow rate weighting coefficient of each sound channel in a multi-channel ultrasonic flowmeter. The method comprises the steps of building a projection model of one single sound channel in the multi-channel ultrasonic flowmeter; on the basis of the single sound channel projection model, inferring a sound channel coverage region average flow rate formula; according to the Reynolds number and the tube wall roughness, calculating the flow rate weighting coefficient of each sound channel in the multi-channel ultrasonic flowmeter. The method is suitable for multi-channel ultrasonic flowmeters of different types, different specifications and different shapes and sizes, the purpose of determining the flow rate weighting coefficient of each sound channel in the multi-channel ultrasonic flowmeter is achieved, the cost of the multi-channel ultrasonic flowmeter is lowered, and application of the multi-channel ultrasonic flowmeter is promoted.

Description

technical field [0001] The invention relates to the technical field of flowmeter performance improvement, in particular to a method for determining the weighted coefficients of flow velocity of each channel of a multi-channel ultrasonic flowmeter. Background technique [0002] Metrology is the eyes of industrial production. Flow measurement is one of the components of measurement science and technology, and it is closely related to national economy, national defense construction and scientific research. Doing this work well plays an important role in ensuring product quality, improving production efficiency, and promoting the development of science and technology. Especially in today's era of energy crisis and increasing automation of industrial production, flowmeters play an important role in the national economy. position and role are more obvious. [0003] As the diameter of the pipeline increases and the measurement range becomes wider, the flow field information that ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/66
Inventor 刘桂雄陈国宇
Owner SOUTH CHINA UNIV OF TECH