Experimental device for generating over-saturated general dissolved gas by high-speed jetting air doping

Abstract

The invention relates to an experimental device for generating over-saturated general dissolved gas by high-speed jetting air doping, comprising a water column, a flowmeter, an air compressor, a general dissolved gas tester, a first valve, a second valve, a third valve, a water pump, a water flow nozzle and a gas nozzle, wherein the air compressor is connected with the flowmeter connected with the gas nozzle through the second valve, and the gas nozzle is arranged in the water column; one end of the water pump is connected with the bottom of the water column, the other end of the water pump is connected with the water flow nozzle through the first valve, and the water flow nozzle is arranged in the water column; the third valve is installed at the bottom of the water column; and the general dissolved gas tester is inserted to the water column when testing. The experimental device can realize the control on the measurement of main physical conditions affecting the generation of the over-saturated general dissolved gas, such as the jetting flow speed of a water body, air-doped amount, pressure, water depth and the like, thereby achieving the purpose of quantitatively researching theair-doped jetting flow of the over-saturated general dissolved gas; and the experimental device has the important promoting function on protecting the aquatic ecosystem of rivers and establishing environmental-friendly hydraulic engineering.

Description

technical field [0001] The present invention relates to a water body total dissolved gas (TDG) supersaturation technology, in particular to an experimental device that can be used to generate supersaturated total dissolved gas under the condition of downstream high-speed jet aeration during dam discharge, so as to control the total water body supersaturation The law of dissolved gas generation, such as the experimental device for the study of the relationship between the amount of aeration, the supersaturation level of the total dissolved gas in the water body in the downstream pad pond, and the total dissolved gas saturation in front of the dam, belongs to the technical field of the supersaturation of the total dissolved gas in the water body of hydraulic engineering. Background technique [0002] Many large-scale water conservancy projects in my country need to discharge water to downstream rivers through spillways, flood tunnels and other discharge structures according to ...

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Problems solved by technology

However, at present, no experimental device has been found at home and abroad that can simultaneously realize the precise control of various water flow physical conditions in the problem of total dissolved gas supersaturation; The simultaneous realization of precise control of multiple water flow physical conditions in the water has never been reported.

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