A gas collection and detection system for high temperature and high pressure coal and rock test equipment

Abstract

The invention discloses a gas collection and detection system for a high-temperature and high-pressure coal-rock test device, which includes: a heat exchange component includes a heat exchanger, a liquid collector and a water pump, and the heat exchanger includes a first port, a second port, and a second port. Three ports and a fourth port, the first port is connected to the second collection port, the third port is connected to the water pump, and the fourth port is connected to the liquid collector; the first one-way valve is connected to the second collection port and the first port One-way conduction between and in the direction of the reactor towards the heat exchanger; the gas storage tank includes an air inlet and an air outlet, and the air inlet is connected to the fourth port; the vacuum pump is connected between the second port and the air inlet; The gas chromatograph is connected to the outlet port; the on-off valve is connected between the gas chromatograph and the gas outlet; the connection port of the gas cylinder is connected to the first collection port; the second one-way valve is arranged at the connection port of the first collection port and the gas cylinder One-way communication between the gas cylinders and the direction of the reactor. The system can collect and detect online in real time.

Description

technical field [0001] The invention relates to the field of gas collection, in particular to a gas collection and detection system for a high-temperature and high-pressure coal-rock test device. Background technique [0002] The characteristics of coal and rock masses under in-situ geological conditions are of great significance to the development of deep resources and energy such as deep mining, oil and gas exploitation, geothermal resource exploitation, and underground coal liquefaction and gasification. The geological background of multi-phase tectonic movement superimposed and reformed has caused different degrees of damage to the development of coal rocks, and further increased the heterogeneity of physical properties and reservoir physical properties, especially strongly deformed tectonic rocks, which restrict the healthy and sustainable development of my country's coal industry At the same time, it also limits the exploration and development of unconventional oil and ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the gas collection method for the high-temperature and high-pressure coal-rock test is simple, and the geological environment cannot be accurately simulated, for example, the interstitial fluid pressure during the geological change process; and the existing detection methods are mostly segmented detection, This detection method is difficult to collect in real time and detect online, resulting in low detection accuracy

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