Brush type sealing device and gas turbine

The invention provides a brush type sealing device and a gas turbine, the gas turbine comprises a stator and a rotor, the stator and the rotor are oppositely arranged, and the brush type sealing device comprises a pairing structure arranged on the side face, close to the stator, of the rotor; the dual runway is arranged on the side surface, close to the rotor, of the stator and corresponds to the position of the pairing structure; one end of the brush ring is of an installation structure, the brush ring is movably connected with the pairing structure on the rotor through the installation structure, and the other end of the brush ring and the dual runway are spaced by a first preset distance. The mounting structure is movably connected with the pairing structure, so that the brush ring can move by a certain distance relative to the rotor in a working state, the purpose of self-adaptive adjustment of the sealing gap is achieved, the sealing effect of the brush type sealing device is greatly improved, and the pr