Gas chromatograph

The utility model provides a gas chromatograph, including the introduction port, with introduction port threaded connection's carrier gas auxiliary, with carrier gas auxiliary threaded connection's year post auxiliary, capillary chromatographic column, the carrier gas auxiliary is including the round stud bolt who has the through -hole, two branches are extended to circle stud bolt's the horizontal level in centre, and are fixed through the stiffener between two branches, and weld the admission line and give vent to anger the pipeline on two branches, admission line, the pipeline of giving vent to anger are linked together with the through -hole, carrying post auxiliary from the top down and including coupling nut in proper order, the heat -insulating material that adds with a coupling nutbody coupling lies in the capillary fixation nut with the heat -insulating material lower extreme, the lateral wall one end that adds heat -insulating material is provided with the locating lever. The utility model discloses