Butt joint in-place adjusting device and method for air-cooling heat exchange tube bundle and lower header

The invention discloses a butt joint in-place adjusting device and method for an air-cooling heat exchange tube bundle and a lower header and solves the problem of how to accurately butt joint and position the lower part of the heat exchange tube bundle on a direct air-cooling A-shaped frame and a condensed water collecting tube. A lower end tube plate of the heat exchange tube bundle is fixedly connected with transverse position adjusting base plates through L-shaped connecting plates, and an arc-shaped hoop is fixedly connected between the two transverse position adjusting base plates, so that the heat exchange tube bundle, the two transverse position adjusting base plates and the arc-shaped hoop form a follow-up whole; and jackscrews are respectively arranged on the bottom end of the arc-shaped hoop and the two transverse position adjusting base plates, and the transverse and longitudinal positions of the heat exchange tube bundle and the tube plate thereof on the direct air-coolingA-type frame are changed