Carbon dioxide recovery balloon protective device

The utility model discloses a carbon dioxide recovery balloon protective device. The carbon dioxide recovery balloon protective device comprises a mechanical actuator and an electric detection control system. The mechanical actuator comprises a carbon dioxide inlet pipeline, a recovery balloon leading pipeline and an air leading pipeline, wherein the carbon dioxide inlet pipeline, the recovery balloon leading pipeline and the air leading pipeline are communicated through a three-way pneumatic valve, and a normally-closed manual ball valve and a normally-opened manual ball valve are arranged side by side on a connecting channel of the carbon dioxide inlet pipeline and the air leading pipeline. The electric detection control system comprises a programmable logic controller and a height sensor which is used for detecting heights of balloons, and the height sensor can transmit height signals of the balloons to the programmable logic controller. When the height signals of the balloons exceed a preset valve, the pr