The utility model discloses an urine power station flow passage components safety arrangement, including the frame in the frame, concatenate one -level flow passage components protection device, second grade flow passage components protection device and the tertiary flow passage components protection device that can intercept different size of a dimension filths respectively in proper order along the rivers flow direction, one -level flow passage components protection device with the equal detachable of second grade flow passage components protection device installs in the frame, second grade flow passage components protection device is equipped with and monitors its inside monitoring devices who blocks dirty situation, tertiary flow passage components protection device is equipped with and monitors its inside the 2nd monitoring devices who blocks dirty situation. The utility model discloses the beneficial effect who has: through dirty structure of blocking of detachable and intelligent monitoring structure, remote monitoring and quick clearance to the filth have been realized to can not influence the normal work of hydroelectric power plant at the clearance in -process, possess higher reliable degree, show to reduce and detect the degree of difficulty and intensity of labour.