Surface uniform rainfall field simulation device

Abstract

The invention discloses a surface uniform rainfall field simulation device which comprises a water supply unit, a water flow control unit, a spraying unit and a drainage unit, wherein the water supply unit comprises a water storage tank, a water supply tank, a diversion pipe and a water pump, the water flow control unit comprises a water inlet pipe and a multi-path water flow control valve, the spraying unit comprises needles with different diameters, an air nozzle and an air control valve, a position adjusting unit comprises a stepping motor, a horizontal guide rail and a lifting rod, a wind field control unit comprises a blower, a wind speed regulating valve and a diversion plate, the drainage unit comprises a drainage groove and a water discharge pump, the water flow control unit comprises a water inlet pipe and a water flow control valve which is connected with the needles with different specifications, the set flow water pressure is matched with the specifications of the needles, and the droplet size and dripping speed of water dropped from the needles are accurately controlled through setting different water pressure. According to the device, the size and space distribution of water droplets can be simulated and accurately controlled, the device has high uniformity and stability, and a reliable basis is provided for the examination of the performance and accuracy of a rainfall measuring instrument.

Description

technical field [0001] The invention relates to a surface uniform rainfall field simulation device that can simulate the real spatial distribution of rainfall, which is mainly used in the calibration of meteorological automatic measurement and related scientific research, and provides a refined quantitative, standard controllable, A reference environment consistent with real precipitation. Background technique [0002] The rainfall phenomenon refers to a precipitation phenomenon composed of water droplets falling from the cloud. The characteristics of rainfall mainly include macroscopic quantities such as rainfall amount, rainfall intensity, rainfall hours and its temporal and spatial distribution, and the size, shape, speed, and so on of raindrops. Spectral distribution and other microscopic quantities. The artificial rainfall simulation device can simulate the macroscopic and microscopic characteristics similar to real precipitation. It is mainly used for the calibration ...

AI Technical Summary

Problems solved by technology

The device simulates rainfall through the spraying of a series of nozzles. At present, there are patents such as 201110130837.4, 201110113318.7, 200910021960.5, etc., but it can only use water pressure and water flow to control rain intensity and rainfall; Related, the size of the water droplets cannot be precisely controlled, and most of the sprayed water droplets are large water droplets, which do not match the scale and shape characteristics of real raindrops; the number of nozzles is limited, even if the location of the nozzles is optimized, the uniformity of spraying cannot be guaranteed, which is inconsistent with the real spatial distribution characteristics does not match

[0005] In the natural environment, there are often winds and turbulence, which lead to complex and changeable characteristics of natural rainfall, but the existing single-point rainfall simulation devices and regional rainfall simulation devices do not take these factors into account, resulting in the inability to truly reproduce natural rainfall. Therefore, it is urgently needed A surface-uniform rainfall field simulation device capable of simulating the real spatial distribution characteristics of natural rainfall and the environmental wind field

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