Passive water rinsing filter system for airborne radioactive effluent of underground nuclear power station

The invention discloses a passive water rinsing filter system for airborne radioactive effluent of an underground nuclear power station. The filter system comprises a metal tank arranged in an underground grotto, wherein a certain amount of iodine filtering solution is contained in the metal tank, the lower part of the sidewall of the metal tank is provided with a gas inlet pipe communicated with a safety shell, the gas inlet pipe is communicated with a plurality of branch pipes in the metal tank, venturi pipes are densely distributed on the branch pipes, the tops of the venturi pipes are lower than the liquid level of the iodine filtering solution, the top of the metal tank is provided with a gas outlet pipe communicated with a flue, a metal fiber filter is arranged under the gas outlet pipe, a heat exchange pipe is arranged between the venturi pipes and the inner wall of the metal tank, the heat exchange pipe is communicated with a ground cooling water tank, and the sidewall of the metal tank is also provided with a liquid injection pipe and a liquid drain pipe. According to the passive water rinsing filter system, the characteristic of the underground nuclear power station and the work principle of the venturi pipes are combined, so that the water rinsing filter system which is passive, can be subjected to self adjustment and pressure relief, can operate effectively in a long-term and can be used repeatedly is provided.