Heavy water reactor nuclear power station loading and unloading machine remote emergency operation tool and operation method

Abstract

The invention relates to the technical field of heavy water reactor nuclear fuel loading and unloading, and particularly discloses a heavy water reactor nuclear power station loading and unloading machine remote emergency operation tool and an operation method. The tool comprises a driving mechanism, a driving long rod, a middle guide support and a driving head assembly; the middle guide support is installed in a bottom plate through hole in a corresponding position of the lower portion of a heavy water reactor nuclear power station loading and unloading machine, and the middle guide support can guide and support the driving long rod; the driving long rod is a rigid long rod with any length formed by connecting a plurality of sections of middle connecting pipes; the lower end of the long driving rod is connected with the driving mechanism installed on the ground, and the driving mechanism can drive the driving head assembly installed on the upper portion of the long rod to ascend, descend and rotate within a certain range. The heavy water reactor nuclear power station loading and unloading machine remote emergency operation tool is easy to install, convenient to operate and safe and reliable to use.

Description

technical field [0001] The invention belongs to the technical field of heavy water reactor nuclear fuel loading and unloading, and in particular relates to a remote emergency operation tool and operation method for a heavy water reactor nuclear power plant loading and unloading machine. Background technique [0002] The heavy water reactor nuclear power plant loading and unloading machine is an important equipment used to replace the nuclear fuel of the heavy water reactor. The silo is a device for storing fuel bundles on the loading and unloading machine, which is driven by a hydraulic motor during normal operation. The B rod and the L rod are the equipment for replacing the fuel bundle on the loading and unloading machine, and they are also controlled by hydraulic motors under normal conditions. The silo, B bar and L bar are the key equipment to ensure the normal progress of refueling. [0003] In order to ensure the safety of the loading and unloading machine, the refue...

AI Technical Summary

Problems solved by technology

It is inconvenient to operate, and this simple tool cannot realize the manual drive of the B rod and L rod

The main disadvantages of the existing device are: (1) inconvenient operation, no support and guidance, and cannot be aligned with the emergency drive mechanism of the silo smoothly; (2) manual lifting is required, and there are unsafe factors; (3) the efficiency of handling failures is low, It is not suitable for long-term operation; (4) cannot complete the automatic switching of the B lever and the L lever; (5) cannot complete the emergency drive operation of the B lever and the L lever; When a failure occurs on the fuel channel of the reactor, the original simple tool cannot be used due to the long length and weight of the long rod required

Images