Channel flow measuring equipment

A flow measurement and equipment technology, applied in the field of channel flow measurement equipment, can solve the problems of long time period and large flow error, and achieve the effect of improving applicability and accurate flow calculation

Pending Publication Date: 2019-12-13
北京奥特美克科技股份有限公司
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Problems solved by technology

At present, the following problems will be encountered in the application process of the water measuring tank. The time period for calculating the instantaneous flow rate is long, resulting in a large error in the calculated flow rate when the velocity of the fluid changes rapidly.

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] An embodiment of the present invention provides a channel flow measurement device, see figure 1 , the channel flow measurement equipment, comprising: a water measuring tank 11, a first ultrasonic probe 12, a second ultrasonic probe 13, a Doppler signal conditioning circuit 14, an analog-to-digital converter 15, a Doppler signal processor 16, a microcontroller 17. Receiving and transmitting circuit 18, water level gauge 19, clock management unit 20 and c...

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Abstract

The embodiment of the invention provides channel flow measurement equipment. According to the channel flow measurement equipment, a Doppler method is adopted to measure flow rate, a Doppler signal processor is used for analyzing and calculating Doppler signals transmitted by an ultrasonic probe to obtain a flow rate; the flow rate is sent to the microcontroller, and the microcontroller calculatesthe instantaneous flow rate, so that the calculation process of the instantaneous flow rate is divided and sent to the Doppler signal processor and the microcontroller for calculation, the calculationperiod of the instantaneous flow rate is shortened, and the flow rate calculation in each calculation period is more accurate. Furthermore, a plurality of Doppler probe pairs are adopted, and the Doppler probe pairs are installed at different heights in a water measuring tank; arrangement of the Doppler probe pairs at different heights is capable of realizing measurement of the fluid rate distribution rules in the vertical direction, and the calculated instantaneous flow is more accurate.

Description

technical field [0001] The invention relates to the technical field of water conservancy, and more specifically relates to channel flow measuring equipment. Background technique [0002] The flow measurement of the channel includes measurement methods such as water measuring weir, water measuring tank and water measuring tank. Water measuring weir, a kind of structure specially built for carrying out flow test, can be used to control upstream and measure flow. Measuring tanks, constructing trough-shaped buildings with narrowed water flow sections on channels and open channels, so that they can form critical flow for flow measurement. The water measuring tank uses an ultrasonic probe to measure the flow state distribution in the tank, so that higher flow measurement accuracy can be obtained. At present, the following problems will be encountered in the application process of the water measuring tank. The time period for calculating the instantaneous flow rate is long, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/66G01P5/24
CPCG01F1/662G01F1/663G01P5/244G01P5/245
Inventor 李献赵君虎李海增高霏贾美
Owner 北京奥特美克科技股份有限公司
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