Safety protection device of liquid nitrogen tank

The utility model relates to a safety protection device of a liquid nitrogen tank, which comprises a tank body, an annular belt is arranged in the middle of the tank body, at least one fixing block is arranged on the annular belt, a support leg is hinged on the fixing block, an L-shaped arm is arranged above the hinged position of the fixing block and the support leg, and the L-shaped arm is connected with the L-shaped arm. The L-shaped arm enables the rotatable angle of the supporting foot to be smaller than a right angle, the supporting foot is arranged close to the outer wall of the tank body, the top end of the supporting foot is hinged to the middle of the fixing block, and the tail end of the supporting foot is arranged in a suspended mode. 本实用新型涉及一种液氮罐的安全防护装置，包括罐体，所述的罐体的中部设置有环带，所述的环带上设置有至少一个固定块，所述的固定块上铰接有支脚，所述的固定块和支脚的铰接处的上方设置有L臂，所述的L臂使支脚的可旋转角度小于直角，所述的支脚贴近罐体的外壁设置，所述的支脚的顶端铰接在固定块的中部，所述的支脚的末端悬空设置。