Magnetic actuator capable of inspection in a complex pipe by plural electromagnetic vibration components

Abstract

Many pipelines are used to transfer steam or coolants in a nuclear power plant or a thermal power plant. A novel magnetic actuator that is capable of inspection in a pipe of inner diameter 45 mm was suggested by the authors [1]. However, the motion principle is not completely established. In addition, this magnetic actuator had a big shape. This paper proposes a new type of magnetic actuator capable of inspection in a complex pipe with an inner diameter from 30 to 40 mm by drive of twin vibration components.