Blowout preventer anti-hanging protection device and blowout preventer assembly

The invention belongs to the technical field of oil exploitation, and particularly relates to a blowout preventer anti-hanging protection device and a blowout preventer assembly.The blowout preventer anti-hanging protection device comprises a blowout preventer body, the top end of the blowout preventer body fixedly communicates with a first supporting barrel, and the top end of the first supporting barrel is fixedly connected with an upper connecting flange; threaded holes which are annularly arranged are formed in the upper surface of the upper connecting flange, the outer surface of the first supporting cylinder is sleeved with two protective sleeves, and a sealing rubber plug is arranged in the blowout preventer body. The protective sleeve is installed and fixed through threaded connection of the threaded groove and the fastening screw, protection of the bottom of the upper connecting flange is achieved through the protective sleeve, the phenomenon that the upper connecting flange is hung and collided when