Method for measuring intensity of atomization rainfall formed by flood discharge in hydropower engineering

A technology of rainfall intensity and hydropower engineering, applied in the direction of rainfall/precipitation gauge, measuring device, meteorology, etc., can solve the problems of inability to measure the direction of rainfall, inaccurate data, and insufficient range, so as to achieve reliable prevention and control and good regularity , the effect of improving accuracy

Active Publication Date: 2012-12-26
NANJING HYDRAULIC RES INST
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Problems solved by technology

At present, the rain measuring instrument commonly used by the meteorological department has a small range and only one rain collecting tube. For example, if it is used to measure the heavy rain intensity of the prototype flood discharge atomized rainfall of a hydropower station, the range is insufficient, the data is not accurate enough, and the direction of rainfall cannot be measured.

Method used

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  • Method for measuring intensity of atomization rainfall formed by flood discharge in hydropower engineering
  • Method for measuring intensity of atomization rainfall formed by flood discharge in hydropower engineering
  • Method for measuring intensity of atomization rainfall formed by flood discharge in hydropower engineering

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Embodiment 1

[0026] Example 1: Two-dimensional atomized rainfall intensity and direction measurement

[0027] Such as figure 1 As shown, establish a two-dimensional Cartesian coordinate system zoy . Present embodiment adopts 2 rain-collecting tubes 1 to collect respectively z , y Atomized rainfall in the axial direction, and the collected rainwater is collected into the water measuring cylinder 3 through the diversion tube 2 at the bottom of the rain collecting cylinder to measure the rainfall intensity. The inlets 4 of the two rain-collecting tubes 1 are circular, the size and shape are exactly the same, and the circular planes of the inlets 4 are respectively connected to the z axis and y axis vertical. For ease of description, the import plane is compared with z axis and y The two rain-collecting tubes with vertical axes are respectively referred to as z Rain collector and y rain barrel.

[0028] During the measurement, z The inlet of the rain collecting tube is verticall...

Embodiment 2

[0035] Example 2: Three-dimensional atomized rainfall intensity and direction measurement

[0036]Such as image 3 As shown, a three-dimensional Cartesian coordinate system is established, and the coordinate axes are x , y , z . Present embodiment adopts 3 rain collecting tubes 1 to collect respectively x , y, z Atomized rainfall in the axial direction, and the collected rainwater is collected into the water measuring cylinder 3 through the diversion tube 2 at the bottom of the rain collecting cylinder to measure the rainfall intensity. It is characterized in that the inlets 4 of the three rain-collecting tubes 1 are all circular, the size and shape are exactly the same, and the circular planes of the inlets 4 are respectively connected to the x axis, y axis and z axis vertical. For ease of description, the import plane is compared with x axis, y axis and z The two rain-collecting tubes with vertical axes are respectively referred to as x rain tube, y Rain col...

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Abstract

The invention belongs to the field of hydraulic and hydro-power engineering, and relates to a method for measuring the intensity of atomization rainfall formed by flood discharge in hydropower engineering. The method comprises the following steps of: collecting atomization rain by using two or three rain collecting tanks, wherein the shapes of the inlets of the rain collecting tanks is completely same, and each inlet plane is vertical to each other on space; respectively gathering the collected rainfall in corresponding water measuring tank by independent guide pipes to measure the intensity of the rainfall, and finally, calculating by subjecting the measured intensity of rainfall to a vectorial resultant to obtain the corresponding total atomization rainfall intensity and the rainfall direction. The method disclosed by the invention can be used for the observation of a model and a proto-model of the atomization rainfall in hydropower engineering, and the measured rainfall intensity data is excellent in regularity and high in precision, so that the research on the mechanism of atomization of flood discharge is prompted greatly, the atomization forecast accuracy of hydropower station engineering is enhanced, and the reliable guarantee is provided to the prevention of the disaster of atomization of flood discharge.

Description

technical field [0001] The invention belongs to the field of water conservancy and hydropower engineering, and relates to a method for measuring the intensity of flood discharge atomized rainfall in hydropower engineering. Background technique [0002] Flood discharge atomization phenomenon is a high-speed water flow problem that occurs with the construction of high dams. It refers to the phenomenon of rainfall and fog flow generated in the local area downstream of the hub during the discharge process of the discharge structure of the hydropower project. Research on the forecasting method of atomization impact of dam flood discharge is a technical problem to be solved urgently. At present, the research on the impact of flood discharge atomization mainly adopts the method of combining prototype observation, mathematical model, hydraulic model and theoretical discussion, among which the prototype observation method and hydraulic model test are the main means to study the probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01W1/14
Inventor 吴时强周辉陈惠玲吴修锋周杰阮仕平
Owner NANJING HYDRAULIC RES INST
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