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Anhydrous test method for ultrasonic flowmeter

An ultrasonic and flowmeter technology, which is applied in the field of ultrasonic flowmeter anhydrous detection, can solve the problems of inability to quantify and poor objectivity of ear judgment, and achieve the effects of ensuring measurement accuracy, reducing operation and maintenance costs, and improving detection efficiency

Active Publication Date: 2015-11-25
NANJING NARI GROUP CORP +1
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Problems solved by technology

[0010] The purpose of the present invention is to provide an anhydrous detection method for an ultrasonic flowmeter. In the case of anhydrous, the anhydrous inspection equipment receives the signal sent by the ultrasonic transducer and judges the signal characteristics, which solves the problem of poor objectivity and inability to judge by the ear. Disadvantages of quantification

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  • Anhydrous test method for ultrasonic flowmeter
  • Anhydrous test method for ultrasonic flowmeter
  • Anhydrous test method for ultrasonic flowmeter

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Embodiment Construction

[0045] The present invention will be described in further detail in conjunction with the accompanying drawings and specific embodiments.

[0046] Ultrasonic flowmeter detection is closely related to its working principle. Since the development of ultrasonic flowmeter, among many measurement methods, transit-time ultrasonic flowmeter has the advantages of simple measurement method and high measurement accuracy, and has always attracted attention. The principle of the time-difference ultrasonic flowmeter is to calculate the flow velocity based on the difference between the propagation time of the ultrasonic signal and the upstream propagation time, so as to calculate the flow rate.

[0047] The working principle of the transit time ultrasonic flowmeter is as follows: figure 1 As shown, this is a flow measurement schematic diagram of a pressurized pipeline. Ultrasonic transducers A and B are a pair of transducers in the same sound path, when one of them is used as a transmitting...

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Abstract

The invention discloses an anhydrous test method for an ultrasonic flowmeter. The method comprises the steps of installing testing equipment on the ultrasonic flowmeter, wherein two test probes are in butt joint with ultrasonic transducers to be tested on the same sound path respectively, using a test cable for connecting the two test probes with an anhydrous tester, and conducting the anhydrous test for the ultrasonic flowmeter. By means of the method, the ultrasonic flowmeter can be used for testing the transducers, the connecting cable, an ultrasonic wave receiving and transmitting circuit, the sound velocity accuracy and the like under the anhydrous condition. The test efficiency is improved, the test process is shortened, the ultrasonic flowmeter commissioning and maintenance cost is reduced, and the flowmeter system commissioning efficiency is improved.

Description

technical field [0001] The invention relates to an anhydrous detection method of an ultrasonic flowmeter, which belongs to the technical field of detection of water conservancy and hydropower measuring instruments. Background technique [0002] Ultrasonic flowmeter has no moving parts, can realize non-contact high-precision measurement, has the advantages of wide range, no pressure loss, good traceability, and cost is not sensitive to caliber changes, so it has obvious advantages in flow measurement of medium and large pipe diameters. [0003] The purpose of ultrasonic flowmeter testing is to ensure that the transducer and flow measurement function of the measuring device can work normally in both static and dynamic water conditions. When an abnormality occurs, multiple tests can be used to find the cause and help debugging and maintenance personnel to solve the problem. [0004] The resonant frequency of the ultrasonic transducer used for water flow measurement is generally...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00G01F1/66
Inventor 夏洲朱浩程潇黠张大朋陈天健刘占果李钦思
Owner NANJING NARI GROUP CORP
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