Device for measuring pipeline fluid flow velocity and measuring method
A technology for measuring pipelines and fluid flow rates. It is used in measurement devices, fluid velocity measurement, and velocity/acceleration/shock measurement. It can solve problems such as insufficient measurement accuracy, and achieve the effects of eliminating errors, suppressing temperature drift, and improving measurement accuracy.
Active Publication Date: 2017-10-20
HANGZHOU ZIWU INSTR
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to solve the problem of insufficient measurement accuracy of traditional acoustic flowmeters in small-diameter and low-velocity pipelines, and to provide a device and measurement method for measuring pipeline fluid flow velocity using the principle of bidirectional high-order acoustic resonance
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[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without making creative efforts all belong to the protection scope of the present invention.
[0022] like figure 1 As shown, a device for measuring pipeline fluid velocity using the principle of bidirectional high-order acoustic resonance, including an acoustic resonance part 1, an electrical resonance part 2, a transducer and a digital microphone, is characterized in that these four parts jointly realize continuous Dual-frequency tw...
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The invention discloses a device for measuring pipeline fluid flow velocity and measuring method. The velocity measuring device includes an acoustic resonance part, an electrical resonance part and acoustic-electric conversion equipment, wherein the acoustic resonance part includes an elongated pipeline and standing wave tubes; the elongated pipeline is an acoustic resonant cavity, a transducer and a digital rheomicrophone are acoustic-electric conversion equipment, the electrical resonance part performs amplification and filtering processing on electrical signals, the fluid flow velocity is calculated through measurement of bidirectional high-order resonant frequency deviation, the standing wave tube structures utilize acoustic characteristics of nodes and antinodes to solve the problem of mutual interference when bidirectional resonant loops work at the same time. The velocity measuring device uses a bidirectional high-order acoustic resonance principle, solves the problem of insufficient measurement accuracy of a traditional acoustic velocity measuring system in a small-diameter low-flow-velocity pipeline, and facilitates improvement of the measurement accuracy of flow velocity of a small-diameter pipeline.
Description
technical field [0001] The invention relates to a device and a method for measuring the flow velocity of a pipeline fluid, in particular to a device and a method for measuring the velocity of a small-diameter pipeline fluid by using the principle of high-order acoustic resonance, and belongs to the technical field of flow measurement. Background technique [0002] In industrial applications, for small-diameter pipes with a pipe diameter ranging from 12mm to 50mm, the measurement accuracy of the acoustic flowmeter cannot meet high requirements due to the limitation of the pipe diameter. At present, the well-known acoustic flowmeter production companies at home and abroad are mainly for the application of gas flow measurement, and the applicable pipe diameter is relatively large. Therefore, there are basically no excellent products on the market for flow measurement of small pipe diameter and low flow velocity pipes. [0003] The essence of acoustic measurement of fluid flow v...
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IPC IPC(8): G01P5/24
Inventor 赵松杰季詠榕申屠常青泮俊芳
Owner HANGZHOU ZIWU INSTR