Novel overflow method and device of evaporator for water surface evaporation measurement

Abstract

The invention discloses a novel overflow method and device of an evaporator for a water surface evaporation measurement, wherein a communicating pipe is arranged at one side of the bottom of the evaporator, the other end of the communicating pipe is communicated with a sealed water bucket, an overflow water pipe is connected with an upper part of the sealed water bucket, the height of the overflowwater pipe is consistent with that of an original overflow hole of the evaporator; the original overflow hole of the evaporator is sealed; when a water level of the evaporator exceeds an overflow water level due to rainfall or quantitative water addition, water in the evaporator enters the sealed water bucket through the communicating pipe and then enters the overflow water pipe through the sealed water bucket; and because a cross section area difference between the sealed water bucket and the overflow water pipe is large, the water is quickly discharged from the overflow water pipe, the overflow water quantity enters a overflow water bucket or automatically monitors the overflow device so as to realize the monitoring of the overflow water quantity. The novel overflow method and device ofthe evaporator for the water surface evaporation measurement changes a water energy conduction mode when an original evaporator overflows, avoids the monitoring error caused by the original overflowhole, and can greatly improve the evaporation monitoring precision.

Description

Technical field: [0001] The invention relates to equipment for measuring water surface evaporation, in particular to a novel overflow method and device for an evaporator used for water surface evaporation measurement. Background technique: [0002] Water surface evaporation observation is one of the important contents of hydrological and meteorological monitoring. According to the requirements of "Specifications for Water Surface Evaporation Observation" (SL 630-2013), the standard water surface evaporator (namely E601B evaporator) is used as a routine equipment for water surface evaporation observation. The mouth area of ​​the standard water surface evaporator is 3000cm 2 , about 618mm in diameter and 687mm in height. It consists of an evaporator, a water circle, a measuring device, and an overflow bucket. There is an overflow hole about 10cm below the edge of the evaporator. When there is rainfall, the water level exceeds the bottom of the overflow hole and overflow wil...

AI Technical Summary

Problems solved by technology

Daily monitoring and experiments show that there are several problems in the existing overflow holes, which cause large errors in evaporation monitoring

The overflow hole of the existing evaporator is circular, with a diameter of about 10 mm. When overflow occurs, the water surface of the evaporator forms a lateral gradient, and the overflow time is very long, resulting in errors in water level monitoring; when the water level of the evaporator is near the overflow hole, due to Affected by wind force (fluctuation of water surface) and water temperature (expansion of water body), it will cause long-term micro overflow, which will be consumed in the overflow pipe and overflow bucket, and will also cause large errors in evaporation

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