System for automatic sampling and detection of on-line gas by high-temperature and high-pressure simulator and detection method thereof

A system for automatic sampling and detection of on-line gas by high-temperature and high-pressure simulator, comprising an automatic control program system and a vacuum system, wherein the automatic control program system controls the vacuum system;

• the vacuum system comprises a vacuum manifold I and a vacuum manifold II;
• an outlet conduit of a high-temperature and high-pressure kettle is connected to a front end of the vacuum manifold I through a pneumatic valve (1);
• the pneumatic valve (1) is successively connected to an electromagnetic valve (2) and an air compressor (3);
• the vacuum manifold I is successively connected to, from a front end to a back end, a pressure controller (4), a gas-liquid separator (5), a gas automatic metering collector (6), a first trace quantitative gas collector (7), and a mechanical pump (8);
• a terminal end of the vacuum manifold I is connected to a high-vacuum six-way valve (12) of a gas chromatograph (11);
• the gas-liquid separator (5) is connected to a cold trap (9);
• the first trace quantitative gas collector (7) is connected to a first power source (10);
• on the vacuum manifold II, from a front end to a back end, a high-low pressure convertor (13), a second trace quantitative gas collector (14), a gas transferring device (15), a heavy oil trap (16), a filtering trap (17), and a pressure gage head are connected successively;
• a terminal end of the vacuum manifold II is connected to a sample introduction port of the gas chromatograph;
• the second trace quantitative gas collector (14) is connected to a second power source (19);
• the gas transferring device (15) is connected to a carrier gas (18);
• a terminal end of the vacuum manifold II is connected to a terminal end of the vacuum manifold I, constituting a loop;
• a back end of the first trace quantitative gas collector (7) on the vacuum manifold I is connected to a back end of the filtering trap (17) on the vacuum manifold II through a vacuum manifold III, constituting another loop.