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A high-sensitivity ultrasonic flowmeter based on an ultrasonic transducer and its method

An ultrasonic transducer and ultrasonic flowmeter technology, applied in the direction of volume measurement, measurement of flow/mass flow, liquid/fluid solid measurement, etc., can solve the problems of low sensitivity, difficult to integrate, large flowmeter, etc. Effect

Active Publication Date: 2021-11-30
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of large volume, difficulty in integration and low sensitivity of the flowmeter in the prior art, and provide a high-sensitivity ultrasonic flowmeter based on an ultrasonic transducer and its method

Method used

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  • A high-sensitivity ultrasonic flowmeter based on an ultrasonic transducer and its method
  • A high-sensitivity ultrasonic flowmeter based on an ultrasonic transducer and its method
  • A high-sensitivity ultrasonic flowmeter based on an ultrasonic transducer and its method

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Embodiment

[0057] At room temperature, using traditional ultrasonic flowmeters (θ=45°, D=8mm, L=D / sinθ, such as image 3 shown) and the high-sensitivity ultrasonic flowmeter of the present invention (D=8mm, L is about 150mm, as figure 1 shown) to measure the flow rate of liquid paraffin oil. Wherein, θ refers to the angle between the propagation path of the ultrasonic wave and the flow path of the fluid in the middle section, and in the present invention, the angle θ=0°.

[0058] The results show that the test sensitivity of the traditional ultrasonic flowmeter is 3.5 ns·min / L, and the test sensitivity of the high-sensitivity ultrasonic flowmeter of the present invention is 85.6 ns·min / L.

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Abstract

The invention discloses a high-sensitivity ultrasonic flowmeter based on an ultrasonic transducer and a method thereof. The flowmeter includes an inlet section, a middle section and an outlet section connected in sequence, and the inlet section, the middle section and the outlet section are all straight pipe sections. There is an angle between the axes of the inlet section and the outlet section and the axis of the middle section; the two ends of the middle section are closed, and ultrasonic transducers integrating transceivers are respectively provided; the array of two ultrasonic transducers The receivers are set opposite to each other and can transmit and receive ultrasonic signals; the connections between the entrance section and the exit section and the middle section are respectively located on the inner side of the ultrasonic transducer at the end of the middle section, and the two connections are along the length direction of the middle section There is a gap, so that there is an overlapping section between the propagation path of the ultrasonic wave and the flow path of the fluid in the middle section. The invention adopts a structure in which the sound wave propagation path and the fluid flow path overlap, which can greatly improve the sensitivity of the flowmeter.

Description

technical field [0001] The invention belongs to the technical field of flow measurement, and in particular relates to a high-sensitivity ultrasonic flowmeter based on an ultrasonic transducer and a method thereof. Background technique [0002] Fluid flow measurement has a wide range of applications in practice. Among various types of flowmeters, ultrasonic flowmeters have the advantages of high precision, fast response, large range ratio, and small pressure loss, which also makes the market demand for ultrasonic flowmeters continue to increase. [0003] Traditional ultrasonic flowmeters mostly use bulk piezoelectric ultrasonic transducers, which are difficult to measure the flow of small pipe diameters due to their large volume. In addition, traditional ultrasonic flowmeters often arrange ultrasonic transducers directly on both sides of the pipeline, and the propagation path of ultrasonic waves in the fluid medium is relatively short, resulting in low sensitivity of the flo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/66G01F15/18
CPCG01F1/66G01F1/662G01F15/185
Inventor 谢金朱可陈旭颖杨邓飞屈梦娇
Owner ZHEJIANG UNIV
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