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Ultrasonic flowmeter and its theory and technique

An ultrasonic and flowmeter technology, which is used in the measurement of flow/mass flow, liquid/fluid solid measurement, measurement devices, etc., and can solve problems such as large errors and reduced accuracy

Inactive Publication Date: 2007-02-07
侯安亮 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0059] In order to overcome the technical problem that the known existing ultrasonic flowmeter and its principle and technology are used to measure the fluid flow rate in a small pipe diameter, a large error is generated, and the accuracy is greatly reduced. The present invention provides an ultrasonic flowmeter and Its principles and techniques

Method used

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  • Ultrasonic flowmeter and its theory and technique
  • Ultrasonic flowmeter and its theory and technique
  • Ultrasonic flowmeter and its theory and technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0378] figure 1 It is a functional block diagram of the ultrasonic flowmeter of the present invention and its principle and technical embodiment 1.

[0379] Embodiment 1 Ultrasonic flowmeter includes: sending part 1, receiving part 2, positive peak detector 3, sending part 4, receiving part 5, positive peak detector 6, or gate 7, monostable 8, or gate 9, monostable 10. AND gate 11, AND gate 12, single-chip microcomputer asynchronous counter 13, single-chip microcomputer asynchronous counter 14, AND gate 15, bistable 16, AND gate 17, bistable 18, standard time base oscillator 19, counting part 20, counting part 21, I / O interface chip 22, I / O interface chip 23, single-chip microcomputer 24, keyboard display interface chip 25, display part 26, keyboard part 27, ultrasonic transmitting vibrator 28, ultrasonic receiving vibrator 29, ultrasonic transmitting vibrator 30, ultrasonic receiving vibrator 31 , the fluid flows through the flow tube 35 .

[0380] figure 1 The ultrasoni...

Embodiment 2

[0431] figure 2 It is a functional block diagram of Embodiment 2 of the ultrasonic flowmeter and its principle and technology of the present invention.

[0432] The ultrasonic flowmeter of Embodiment 2 includes: a sending part 1, a receiving part 2, a positive peak detector 3, an OR gate 7, a monostable 8, an AND gate 11, a single-chip asynchronous counter 13, an AND gate 15, a bistable 16, and a standard time base Oscillator 19, counting part 20, I / O interface chip 22, single chip microcomputer 24, keyboard display interface chip 25, display part 26, keyboard part 27, fluid flow through flow tube 35, ultrasonic transmitting and receiving vibrator 38, ultrasonic transmitting and receiving vibrator 39 , electronic analog switch 40, electronic analog switch 41.

[0433] The ultrasonic flowmeter of Embodiment 2 can be roughly divided into three parts: sampling part, calculation part and keyboard display part.

[0434] The sampling part consists of figure 2 The counting secti...

Embodiment 3

[0464] image 3 It is a functional block diagram of Embodiment 3 of the ultrasonic flowmeter (calorimeter) and its principle and technology of the present invention.

[0465] The ultrasonic flowmeter (calorimeter) of embodiment 3 comprises: figure 1 The shown ultrasonic flowmeter, temperature sensitive element 32, temperature sensitive element 33, amplifier 34, amplifier 36, A / D interface chip 37.

[0466] The structure, principle, technology, and measurement process of the ultrasonic flowmeter part in the ultrasonic flowmeter (calorimeter) of the third embodiment are exactly the same as those of the ultrasonic flowmeter described in the first embodiment.

[0467] Temperature sensitive element 32, temperature sensitive element 33, amplifier 34, amplifier 36, A / D interface chip 37 and single-chip microcomputer 24, keyboard display interface chip 25, display portion 26, keyboard in the ultrasonic flowmeter (calorimeter) of embodiment 3 27 form a thermometer.

[0468] The tem...

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Abstract

The related ultrasonic flowmeter comprises: a sampling part, a computation part, and a keyboard display part, wherein sampling the oscillating number of oscillator 19 clockwise and counter-clockwise to obtain the sampling data N1' and N2'; and computing the flow velocity and flow rate by a SCM 24 based on principles and the 'extended transmission length technology'.

Description

Technical field [0001] The present invention relates to an ultrasonic flowmeter capable of measuring the flow velocity and flow rate of various fluids (liquids, gases, mixtures of different liquids, mixtures of different gases) in pipelines, and the propagation speed of ultrasonic waves in the fluids, as well as its principle and technology . Especially the ultrasonic flowmeter that can significantly improve the measurement accuracy of the ultrasonic flowmeter, significantly expand the lower limit of measurement, and is significantly suitable for various pipe diameters, and can measure the propagation speed of ultrasonic waves in the current fluid when the fluid is static, and its principle and technology. The invention also relates to ultrasonic calorimeters and flowmeter standard gauges. Background technique [0002] At present, there are many different forms of measurement principles of known ultrasonic flowmeters, of which there are mainly the following two, and the pr...

Claims

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Application Information

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IPC IPC(8): G01F1/66
Inventor 侯安亮侯宇侯静怡
Owner 侯安亮
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