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Ultrasonic measurement method for pipeline flux

A technology of ultrasonic wave and testing method, which is applied in the direction of measuring flow/mass flow, liquid/fluid solid measurement, measuring device, etc. It can solve the problems of large flow test error and difference between two transducers, so as to improve precision and accuracy , overcome the effect of excessive error and simple ultrasonic test flow

Active Publication Date: 2011-04-20
贵州航天凯山石油仪器有限公司
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Problems solved by technology

[0002] With the application of ultrasonic technology becoming more and more mature, ultrasonic flowmeters are widely used in various fields and have developed rapidly! However, the ultrasonic flowmeters currently used in the market all use two transducers to measure the flow. Due to the limitation of the transducer manufacturing process, the difference between the two transducers is caused, which eventually leads to a large error in the flow test.

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  • Ultrasonic measurement method for pipeline flux
  • Ultrasonic measurement method for pipeline flux
  • Ultrasonic measurement method for pipeline flux

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Embodiment 1

[0009] Example 1. Such as figure 1 As shown, it uses a transducer 1 and a blocking mechanism 2 to measure the flow rate, and the transducer 1 and the blocking mechanism 2 are placed at both ends of the pipeline 3 respectively. The transducer 1 is also called an active sensor, and is mainly used to realize the reversible conversion of electric energy and sound energy. During the test, first control the blocking mechanism 2 to be in a non-blocking state, and test the time t when the ultrasonic wave is emitted from the transducer 1 and reflected by the blocking mechanism 2 and the transducer 1 receives the ultrasonic wave 1 Then control the flow blocking mechanism 2 to be in the flow blocking state, and test the time t when the transducer 1 receives the ultrasonic wave after the ultrasonic wave is reflected by the flow blocking mechanism 2 from the transducer 1 2 . Assuming that the propagation velocity of ultrasonic waves is c, the flow velocity of the medium in the pipeline ...

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Abstract

The invention discloses an ultrasonic measurement method for pipeline flux. The measurement method comprises the following steps of: controlling a blockage mechanism (2) to be in a non-blockage state and measuring the time from when a transducer (1) emits an ultrasonic wave to when the transducer (1) receives the ultrasonic wave after the ultrasonic wave is reflected through the blockage mechanism (2); and controlling the blockage mechanism (2) to be in a blockage state and measuring the time from when the transducer (1) emits an ultrasonic wave to when the transducer (1) receives the ultrasonic wave after the ultrasonic wave is reflected through the blockage mechanism (2) so as to compute the flux in a pipeline according to a propagation velocity of the ultrasonic wave, the distance between the transducer (1) and a reflection end face of the blockage mechanism (2) and an inside diameter of the pipeline (3). In the ultrasonic measurement method, only one transducer is used to measure the pipeline flux, so that the measurement operation is easy, the cost is reduced and the precision and the accuracy of the measurement are improved.

Description

technical field [0001] The invention relates to a flow detection method, in particular to an ultrasonic detection method of pipeline flow. Background technique [0002] With the application of ultrasonic technology becoming more and more mature, ultrasonic flowmeters are widely used in various fields and have developed rapidly! However, the ultrasonic flowmeters currently used in the market all use two transducers to measure the flow rate. Due to the limitations of the transducer manufacturing process, the difference between the two transducers is caused, which eventually leads to a large error in the flow test. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an ultrasonic testing method for pipeline flow. The method only uses one transducer to test the flow, which makes it easy to test the flow by ultrasonic waves, and can also improve the accuracy of the test. [0004] In order to solve the above technical pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/66
Inventor 杨华夏勇谢泰平王文青黄超军周睿
Owner 贵州航天凯山石油仪器有限公司
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