Gas analyzer sample gas chamber apparatus with characteristic of easy optical path adjustment

The present invention provides a gas analyzer sample gas chamber apparatus with a characteristic of easy optical path adjustment. The gas analyzer sample gas chamber apparatus comprises a sample gas chamber pipe, a proximal end spherical reflecting mirror and a distal end spherical reflecting mirror, wherein the proximal end spherical reflecting mirror and the distal end spherical reflecting mirror are arranged inside the sample gas chamber pipe. The gas analyzer sample gas chamber apparatus further comprises an adjustment device forming a sealed connection with the inner wall of the sample gas chamber pipe and provided for adjusting a distance between the proximal end spherical reflecting mirror and the distal end spherical reflecting mirror, wherein the distal end spherical reflecting mirror or the proximal end spherical reflecting mirror is connected with the adjustment device. According to the present invention, during detection, the adjustment device arranged on the inner wall of the sample gas chamber pipe can be adjusted, such that the distance between the proximal end spherical reflecting mirror and the distal end spherical reflecting mirror can be correspondingly changed so as to meet detection requirements; and the adjustment device is adjusted, such that the distance between the distal end spherical reflecting mirror arranged on the adjustment device and the proximal end spherical reflecting mirror is correspondingly changed so as to avoid multiple adjustment processes of the distal end spherical reflecting mirror and effectively reduce labor intensity of operators.