Emergency floating motion speed control device for deep sea platform

The invention relates to a deep sea platform emergency floating motion speed control device which comprises a cylindrical shell. The pressure-resistant cabin is located at the axis position of the shell, symmetrical main water ballast spaces are arranged on the two sides of the pressure-resistant cabin, the multiple speed control devices are arranged at the lower ends of the two symmetrical main water ballast spaces correspondingly and used for controlling the floating speed, and each speed control device specifically structurally comprises a compressed air cabin, a water tank, a water tank and a water tank, the device comprises a plurality of cabins arranged in a stacked mode, an upper spring mechanism, a lower spring mechanism and a triggering mechanism, and the triggering mechanism can damage the nearest fragile piece through displacement. The device is compact and reasonable in structure and convenient to operate, an active speed control method is adopted, when the platform floats too fast, the upper spri