Straight pipe aligning and focusing device

The utility model discloses a straight pipe aligning and focusing device which comprises an in-situ laser gas analyzer, one side of the in-situ laser gas analyzer is hinged with one side of a box door, one side of the box door is fixedly connected with a handle A, one side of the inner wall of the in-situ laser gas analyzer is fixedly connected with a supporting leg, and the top of the supporting leg is fixedly connected with the bottom of a workbench. An adjusting and focusing device is arranged on the rotating rod and comprises a worm wheel, the worm wheel is fixedly connected with the outer wall of the rotating rod and meshed with a worm, and the two ends of the worm are rotationally connected with one sides of the two sets of supports. By arranging the adjusting focusing device, a handle B is rotated to drive a worm to rotate, the worm drives a worm gear to rotate, and the worm gear drives a placing disc to rotate, so that the effect of adjusting the angles of the transmitting end laser pen and the receiv