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Two-line energy slope flow rate metering method

A flow measurement, second-line technology, applied in the field of second-line energy slope flow measurement method, can solve the problem of facility anti-theft safety and so on

Active Publication Date: 2010-05-12
李佳宾
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a second-line energy slope flow measurement method, which uses movable equipment to measure the flow velocity of a vertical line on the left and right banks, and then uses the second-line energy slope method model to calculate the flow rate, and the single cross-section flow measurement equipment The cost is minimized, and at the same time, it solves the security issues of guarding sections and facilities against theft

Method used

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  • Two-line energy slope flow rate metering method
  • Two-line energy slope flow rate metering method
  • Two-line energy slope flow rate metering method

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Embodiment Construction

[0070] like Figure 1 to Figure 5 As shown, the present invention provides a second-line energy slope flow measurement method, which is suitable for measuring the flow of rivers and open channels. For the convenience of explanation, the vertical flow velocity model to be used in the second-line energy slope flow measurement method of the present invention is firstly explained here.

[0071] like figure 1 As shown, the vertical flow velocity model is that when the energy slope is known, the vertical line is inserted into a rectangular section whose length is the same as the vertical line water depth and whose width is the width of the water surface, that is, the rectangle abcd shown in the accompanying drawing, According to the vertical flow velocity formula of rectangular section (detailed below), the vertical flow velocity in the rectangular section is obtained; then the vertical line is inserted into the triangular section whose height is the same as the water depth of the v...

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Abstract

The related measuring method comprises: selecting two or more vertical line positions to measure the vertical flow rate and inverse obtain opposite energy grades by the vertical flow model; processingwith numerical method to the energy grade; selecting some vertical lines on river section to obtain opposite vertical flow rate by former energy grade and model; finally, obtaining the flow rate by partial flow area method. This invention simplifies measurement, improves precision, and provides condition to flow measurement automation.

Description

technical field [0001] The invention relates to a second-line energy slope flow measurement method, in particular to a second-line energy slope flow measurement method suitable for measuring the flow of rivers and open channels. Background technique [0002] The traditional flow measurement method is to measure the flow velocity of multiple vertical lines (depending on the width of the river, at least not less than five) with a current meter on the cross-section along the width of the river, and then use the partial velocity area method to calculate the flow rate. This method is widely used in flow measurement of natural rivers, and its operation process is called flow measurement. [0003] When a natural river encounters a major flood, the flow velocity is high and there are many floating objects, so the flow meter method cannot be implemented. At this time, the buoy method is often used instead. The phenomenon that the buoys are squeezed into the Zhonghong area, and the b...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/704
Inventor 李佳宾
Owner 李佳宾
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