3 3-D seismic isolation spring damper for equipment of nuclear power plants

摘要

The present invention relates to a three-dimensional isolated spring shock absorber for nuclear equipment, which is installed between a base plate of nuclear equipment and a floor for installation and is to safely protect the nuclear equipment placed on the upper part by damping earthquake vibration transferred from the floor. The three-dimensional isolated spring shock absorber for nuclear equipment includes: a shock absorber body comprising an upper support plate and a lower support plate; multiple coil springs installed between the outer circumference of the lower support plate and the upper support plate of the shock absorber body and supporting the load of the nuclear equipment; and multiple elastoplastic spring connection bodies alternately installed with the coil spring along the outer circumference of the lower support plate and the upper support plate. The upper support plate is formed to be flat with a fixed width to be connected to the base plate of the nuclear equipment. The lower support plate has fixed intervals with the upper support plate and is formed to be flat to be connected to the floor. Therefore, the three-dimensional isolated spring shock absorber for nuclear equipment performs safe driving and a stopping function by protecting the nuclear equipment installed in a nuclear power plant from the vibration and shock generated due to an earthquake or crustal movements.