Multichannel time difference method ultrasonic flowmeter

An ultrasonic and time difference method technology, applied in the field of multi-channel time difference method ultrasonic flowmeter, can solve the problems of inability to achieve simultaneous measurement of multiple channels, inability to accurately fluid flow state, etc., to achieve multi-channel data acquisition, improve measurement accuracy, and the effect of improving measurement accuracy

Inactive Publication Date: 2018-08-28
CHINA JILIANG UNIV
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Problems solved by technology

In the traditional ultrasonic flowmeter, the ultrasonic transducer acts as both a transmitter and a receiver. Ultrasonic flowmeters can only achieve single-channel speed measurement, and cannot achieve simultaneous measurement of multiple channels. Multi-channel measurement can greatly improve the measurement accuracy

Method used

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  • Multichannel time difference method ultrasonic flowmeter
  • Multichannel time difference method ultrasonic flowmeter
  • Multichannel time difference method ultrasonic flowmeter

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, further illustrate the present invention with embodiment. But this embodiment is only illustrative, and the protection scope of the present invention is not limited by this embodiment.

[0018] Such as figure 1 As shown, a multi-channel time-of-flight ultrasonic flowmeter includes ultrasonic transducers with special fan-shaped matching layers from C, upstream ultrasonic receivers A1, A2, A3, downstream ultrasonic receivers B1, B2, B3, pipe D. The ultrasonic transducer with a special fan-shaped matching layer acts as an ultrasonic transmitter from C, and continuously emits ultrasonic waves when working. The upstream ultrasonic signals can be received at the same time, which reduces the error caused by different measurement times and realizes the acquisition of multi-channel data at the same time.

[0019] Such as figure 2 , 3 As shown, an ultrasonic transducer C with a special fan-shaped matching layer includes a spec...

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Abstract

The invention relates to a multichannel time difference method ultrasonic flowmeter and provides a novel ultrasonic transducer comprising a special sector matching layer, insulating glue, a piezoelectric sheet, an outer shell and a wire. By changing the installation mode of an ultrasonic flowmeter, the ultrasonic transducer with the special sector matching layer is used as an ultrasonic transmitter, and an ultrasonic receiver is disposed on both sides of the ultrasonic transmitter, and consequently, sampling of the forward and reverse currents is synchronized, data acquisition of multiple ultrasonic flowmeters is achieved, and measurement accuracy is improved.

Description

technical field [0001] The invention relates to an ultrasonic flowmeter, in particular to a multi-channel time-difference method ultrasonic flowmeter. Background technique [0002] Ultrasonic flowmeter is a non-contact flow measuring instrument, which has no effect on the fluid state during the measurement process, and has the characteristics of high precision and high stability. In the traditional ultrasonic flowmeter, the ultrasonic transducer acts as both a transmitter and a receiver. Ultrasonic flowmeters can only achieve single-channel speed measurement, and cannot achieve simultaneous measurement of multiple channels. Multi-channel measurement can greatly improve the measurement accuracy. Contents of the invention [0003] The purpose of the present invention is to improve the synchronization of data acquisition, improve the data acquisition rate of ultrasonic flowmeter, and provide a multi-channel time-difference method ultrasonic flowmeter, the specific technical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/66
CPCG01F1/662G01F1/667
Inventor 张凯刘明祥张曦
Owner CHINA JILIANG UNIV
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