Cross flow testing apparatus and method for cold test on drive wires of nuclear power plants

• Main Authors: DUAN YUANGANG, ZHU MINGLI, ZHANG PING, DAI CHANGNIAN, LIU YANWU, YU XIAOLEI, TANG MAO
• Format: Patent
• Language: Chinese; English
• Published: 20.11.2013
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS

The invention discloses a cross flow testing apparatus and method for a cold test on drive wires of nuclear power plants. The testing apparatus comprises a cross flow limiter, a cross flow inlet connecting tube and an outlet connecting tube, wherein the cross flow limiter is removably arranged between an upper barrel of a pressure vessel and a control rod guide cylinder, and the cross flow inlet connecting tube after passing through the upper barrel of the pressure vessel extends to the inside of the cross flow limiter. According to the device and the method, through arranging the removable cross flow limiter between the upper barrel of the pressure vessel and the control rod guide cylinder, the cross flow limiter relatively conforms to actual situations; through replacing the cross flow limiters which are different in structures, the influence of the cross flow limiter on the rod falling time of a control rod assembly can be determined according to different needs, thereby enabling an operation of optimizing