Device and method for measuring partial flow
A flow measurement device and technology of the measurement device, which are applied to the measurement device, fluid velocity measurement, and the application of electromagnetic flowmeters to detect fluid flow, etc. Effect
Active Publication Date: 2022-03-25
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology
[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the weighted function of the existing part-full pipe fluid flow measurement is constantly changing with the change of the liquid level, so that the flow measurement accuracy is not high
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[0040] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.
[0041] In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals. The size and thickness of each component shown in the drawings are shown arbitrarily, and the present invention does not limit the size and thickness of each component. In order to make the diagram clearer, the thickness of parts is exaggerated in some places in the drawings; Figure 3 to Figure 6 The filled part of the horizontal line is fluid.
[0042] Such as figure 1 As shown, the present invention provides a partial pi...
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The invention discloses a non-full pipe flow measurement device and method, relating to the technical field of single-phase fluid flow measurement, including an inlet pipe, an outlet pipe, an electromagnetic flow measurement device, a power rotating pipe, a transmission device, and a motor. The power rotating pipe The two ends of the two ends are respectively rotatably and sealedly connected with the inlet pipe and the outlet pipe through bearings, the electromagnetic flow measuring device is arranged on the outlet pipe, and a cyclone is coaxially installed in the power rotating pipe, so The cyclone is closely connected with the inner wall of the power rotating tube, the transmission device is connected with the motor and the power rotating tube, and the motor drives the power rotating tube to rotate. The high-speed rotation of the power rotating tube drives the high-speed rotation of the fluid to generate a centrifugal force to form a liquid ring, so that the fluid flow rate changes from non-axisymmetric distribution to axisymmetric distribution. Through the implementation of the invention, the weight function can be equivalent to 1 under the working condition of the partly filled pipe fluid, which improves the accuracy and stability of the flow measurement.
Description
technical field [0001] The invention relates to the technical field of single-phase fluid flow measurement, in particular to a device and method for measuring a partially filled pipe flow. Background technique [0002] According to the measurement principle of the traditional electromagnetic flowmeter, the induced electromotive force generated by the electromagnetic flowmeter is not only proportional to the flow velocity of the fluid and the strength of the magnetic field, but also related to the weight function; When , the role of the weight function can be equivalent to 1, and the induced electromotive force is only linearly related to the average flow velocity. [0003] Traditional electromagnetic flowmeters are designed for full pipe flow, but in engineering practice, the working conditions are more complicated, and partial pipes often occur; electromagnetic flowmeters cannot perform accurate measurements in this case, and large errors will occur. Common The measurement...
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IPC IPC(8): G01F1/58G01P5/00
CPCG01F1/58G01P5/00
Inventor 杨杨张超王栋苏明旭刘明张兴凯朱兵
Owner UNIV OF SHANGHAI FOR SCI & TECH