Drying and filtering device for gas chromatography pretreatment

The utility model discloses a drying and filtering device for gas chromatography pretreatment, which is characterized by comprising a gas-water separator (1), and a pressure reducing valve (2), a condenser (3) and a drying filter (4) which are sequentially connected with the gas-water separator (1), sample gas enters the gas-water separator (1) from the sampling port (6) through the sampling valve (5) for first moisture removal; and the condenser (3) is positioned behind the pressure reducing valve (2). A three-stage dewatering, filtering and pressure reducing method is adopted, the sample gas dewatering and drying functions are achieved, compared with the prior art, the mounting position of the pressure reducing valve is improved, the drying filter is added, the molecular sieve is filled, and the remarkable technical effect of drying and filtering is achieved. 本实用新型公开了一种气相色谱预处理干燥过滤装置，其特征是，包括气水分离器（1），与所述气水分离器（1）依次连接的减压阀（2）、冷凝器（3）、干燥过滤器（4）；样气从采样口（6）进入通过采样阀（5）进入所述气水分离器（1）进行第一次水分脱除；所述冷凝器（3）位于所述减压阀（2）的后方。本实用新型的三级