Sealing device of engine thrust chamber, mounting method of sealing device and engine

The invention discloses a sealing device of an engine thrust chamber, an installation method of the sealing device and an engine, and relates to the technical field of spaceflight rocket liquid engines, the sealing device comprises a supporting table, and at least two supporting rods are arranged in the circumferential direction of the supporting table; one end of the clamping assembly is adjustably connected with the end, away from the supporting table, of the supporting rod, and the other end of the clamping assembly is attached to the inner wall of a spray pipe of a thrust chamber; the connecting shell is connected with the clamping assembly, and the outer wall of the connecting shell is attached to the inner wall of the thrust chamber spray pipe; the inflation shell is connected with the end, away from the clamping assembly, of the connecting shell, and the inflation shell is attached to the inner wall of the thrust chamber spray pipe. The clamping assembly is contracted and then placed in the spray pipe