Underwater manifold multi-working-condition self-adaptive connecting device

The invention discloses an underwater manifold multi-working-condition self-adaptive connecting device which comprises manifold flanges arranged at the butt-joint ends of a left manifold and a right manifold respectively, and a middle disc is arranged between the left manifold flange and the right manifold flange. The middle disc is connected with the left manifold flange through a radial self-adaptive mechanism for compensating radial deviation and an axial self-adaptive mechanism for compensating axial deviation, and the middle disc is also connected with the right manifold flange through the radial self-adaptive mechanism and the axial self-adaptive mechanism; the left manifold and the right manifold are respectively provided with a sealing shell, and the left sealing shell and the right sealing shell are pressed and sealed through a pressing and sealing mechanism. The self-adaptive manifold connecting device is adopted, a certain degree of axial deviation and radial deviation generated in the using proces