压水堆燃料棒堆内瞬态试验功率调节装置设计

Design of Power Adjusting Device for PWR Fuel Rod Ramp Test

燃料棒功率瞬变调节技术是燃料元件堆内瞬态行为试验研究中的关键技术之一。本工作设计功率调节装置,以实现对燃料棒在堆内瞬态试验过程中的功率调节。该装置由驱动机构、固体中子吸收体、控制系统组成。堆内外的试验结果表明:功率调节装置运转顺利,控制系统可控制吸收体以不同速度上下运动,同时又可在事故情况下停止吸收体的运动,以确保反应堆安全。

The technology of power adjusting is one of the key technologies of fuel rod ramp test. The design purpose of power adjusting device is to reach the request of power adjusting during the ramp test. The device consists of drive machine, neutron absorber and control system. The results of out-pile and in-pile tests show that the device is smoothly operated, the neutron absorber can be moved up and down with different speed by control system, at the same time it can be stopped during accident situation to provide the safe of reactor.