Automatic measuring system of phreatic water evaporation

A measurement system and automatic technology, applied in the direction of measuring device, measuring capacity, liquid/fluid solid measurement, etc., can solve the problems of automatic, continuous and accurate measurement of submersible evaporation process, etc., achieve simple structure, improve measurement accuracy, The effect of convenient operation and management

Inactive Publication Date: 2009-12-02
INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI
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Problems solved by technology

[0002] At present, the device used to measure submerged evaporation is mainly the lysimeter, which calculates the total evaporation and the evaporation process by directly measuring the water level change in the lysimeter; The water level changes at different times are used to calculate the evaporation rate and total evaporation at dif...

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  • Automatic measuring system of phreatic water evaporation

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Embodiment Construction

[0020] figure 1 The submersible evaporation automatic measurement system of the present invention shown in the figure is mainly composed of a water storage tank 1, a constant pressure water supply tank 3, a rock soil column 5 and a tipping bucket flowmeter 9 which are connected or connected through pipeline circulation. The middle rock-soil column 5 of the system is a cylindrical container with built-in rock and soil. A plurality of water outlets 6 are vertically arranged on the cylindrical surface of the rock-soil column to connect with the water collection tipping bucket 7 of the tipping bucket flow measuring instrument. The water flowing out of the flow measuring instrument The water pump (10) that enters the reservoir is replenished to the water storage tank (1) through the circulation pipeline 8; the connection pipeline with the water supply tank 1 can be opened to set, which is convenient for calibrating the outlet water flow rate of the water supply tank, reducing errors...

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Abstract

The invention provides an automatic measuring system of phreatic water evaporation, which measures in a direct mode. The automatic measuring system comprises a water storage tank, a water supply tank, a rock-soil cylinder and an impounding reservoir which are connected or joined in turn through a pipeline to form a circulation, wherein the rock-soil cylinder is a cylindrical container with rocks and soil inside, a plurality of water outlets are vertically arranged on the cylindrical surface of the rock-soil cylinder and are joined with a water collection tipping bin of a tipping flow measuring device, and water discharged by the flow measuring device gets into the impounding reservoir and is supplemented into the water storage tank by a water pump arranged through a circulating pipeline. The automatic measuring system, according to a dynamic water budget principle, measures the speed of the phreatic water evaporation under different water level embedded depth conditions by using a constant pressure water supply device and an automatic measuring technique of the tripping flow measuring device and by automatically measuring the outlet flows at different parts of the rock-soil cylinder, thus the automatic monitoring of hydrological data becomes possible and the measurement accuracy is greatly improved. The measuring system has a simple structure and convenient running and management.

Description

technical field [0001] The invention relates to a submersible evaporation automatic measurement system and a measurement method, which are mainly used for studying the evaporation amount and evaporation process of diving in mountains or plains, and belong to the technical field of small-scale hydrological data measurement equipment for agricultural water saving and storage. Background technique [0002] At present, the device used to measure submerged evaporation is mainly a lysimeter, which calculates the total amount of evaporation and the evaporation process by directly measuring the water level change in the lysimeter; The water level changes at different times are used to calculate the evaporation rate and total evaporation at different times; compared with the first method, although the constant pressure automatic water supply is realized, this method still does not get rid of the traditional idea of ​​calculating the evaporation process by measuring the water level, an...

Claims

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Application Information

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IPC IPC(8): G01F11/00
Inventor 曹建生张万军
Owner INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI
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