A carbon dioxide mixed gas preparation device

Abstract

A carbon dioxide mixed gas preparation device relates to a mixed gas preparation device. It is equipped with air branch, carbon dioxide branch and detection mechanism; the air branch is equipped with air compressor, air filter, primary pressure regulating valve, purification bottle group, secondary pressure regulating valve and air branch needle valve. The air compressor, air filter, primary pressure regulating valve, purification bottle group, secondary pressure regulating valve, and air branch needle valve are sequentially connected by flexible pipes; the carbon dioxide branch circuit is provided with a carbon dioxide storage cylinder, a filter bottle group, Pressure regulating valve, carbon dioxide branch needle valve, the carbon dioxide storage cylinder, filter bottle group, pressure regulating valve, carbon dioxide branch needle valve are connected with flexible pipes in sequence; the detection mechanism is equipped with CO2 sensor, transmitter, RS485 to RS232 signal converter, DC power supply.

Description

technical field The invention relates to a mixed gas preparation device, in particular to a carbon dioxide mixed gas preparation device suitable for simulating future atmospheric carbon dioxide environment in a laboratory. Background technique Atmospheric CO caused by human activities 2 The increase in concentration, in addition to increasing the global temperature, causes another serious ecological problem is ocean acidification. In 2003, the issue of ocean acidification was first raised in "Nature", which subsequently attracted widespread attention from the scientific community and has become an important content in the frontier field of international marine scientific research. The conventional method is to prepare mixed gases of carbon dioxide with different concentrations, simulate the future atmospheric environment, prepare acidified seawater, and study the response of marine organisms. Can the required concentration of CO be obtained stably and continuously? 2 Mixe...

AI Technical Summary

Problems solved by technology

CO currently available in industry 2 Mixed gas equipment, produced CO 2 The gas concentration is often high, and the accuracy is low, the fluctuation is large, and it cannot reach the experimental level

On the other hand, the specialized CO 2 The mixed gas preparation instrument is expensive, the output gas volume is relatively small, and the accuracy fluctuates greatly, which limits the precision and repeatability of the experimental design

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