Method for correcting pump station flow measuring result
A flow measurement and pumping station technology, applied in the field of correcting the flow measurement results of the pumping station, can solve problems such as large deviation, and achieve the effects of improving accuracy, reducing errors, stable operation and energy saving
Active Publication Date: 2017-08-04
CHINA AGRI UNIV
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[0006] The purpose of the present invention is to provide a method for correcting the flow measurement results of the pumping station, so as to overcome the problem of large systematic deviations in the measurement results of ultrasonic flowmeters in the prior art
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[0034] The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.
[0035] In the description of the present invention, it should be noted that the terms "installation", "connected" and "connected" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood in specific situations.
[0036] Flow rate refers to the amount of f...
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The invention relates to the technical field of pump station flow control, and discloses a method for correcting a pump station flow measuring result. The method comprises the steps of obtaining a three-dimensional model of a pump station system channel; conducting grid dividing on the three-dimensional model; conducting simulating calculating to obtain data of multiple work condition states with the combination of a boundary condition, wherein the data comprises the average velocity v line of a simulating sound track line in the axial direction of a pipeline and the normal average velocity v plane of a pipe section in which the midpoint of the simulating sound track line is located; calculating to obtain a corresponding correction coefficient eta; generating a correction coefficient-flow relation curve, wherein the flow is flow Q simulation on the simulation sound track line; obtaining flow value Q measurement actually measured by an ultrasonic flowmeter, and correcting the Q measurement based on a set relation. According to the method for correcting the pump station flow measuring result, the data measured by the ultrasonic flowmeter which is used by a pump station is corrected, the precision of data is improved, the error in pump station site flow measurement is reduced, and thus the operation of the pump station is more stable and saves more energy.
Description
Technical field [0001] The present invention relates to the technical field of flow control of pumping stations, in particular to a method for correcting flow measurement results of pumping stations. Background technique [0002] With the construction of my country's South-to-North Water Diversion and its supporting projects, there is an increasing demand for large pumping stations. The operating flow of the pumping station is an important parameter related to the efficient and stable operation of the pumping station. How to accurately measure the flow of large pumping stations under typical working conditions is an urgent problem to be solved. [0003] For large-diameter pipeline water inlet and outlet systems, ultrasonic flowmeters based on the propagation time method are usually used to test the flow rate of the pumping station. It has the advantages of easy installation, non-contact, no flow disturbance, pressure energy loss, and large pipe diameter adaptability, and has been...
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IPC IPC(8): G01F1/66G01F15/00G06F17/50
CPCG01F1/667G01F15/00G06F30/20
Inventor 姚志峰高贵肖若富王福军
Owner CHINA AGRI UNIV