Refueling gripper capable of adapting to special-shaped operation head

Abstract

The invention provides a refueling gripper capable of adapting to a special-shaped operation head. The refueling gripper comprises a gripper, a special-shaped gripper guide rod assembly and a gripperlifting sleeve. The gripper and the special-shaped gripper guide rod assembly are arranged in an inner barrel of the gripper lifting sleeve. The gripper comprises a clamping jaw, a cam, a connecting pin and a telescopic rod. At least three telescopic rods are symmetrically distributed on the outer side of the special-shaped gripper guide rod at the lower end of the inner cylinder, the tail end ofeach telescopic rod is rotationally connected with the corresponding clamping jaw through the corresponding connecting pin, and the corresponding cam is arranged on each clamping jaw. The special-shaped gripper guide rod assembly comprises a guide rod and a positioner, the guide rod in arranged in the gripper lifting sleeve, the positioner is arranged on the upper portion of the guide rod, and concave points are arranged on the surfaces of the two sides of the lower portion of the guide rod. The refueling gripper is simple in structure, small in size, capable of meeting the gripping requirement of fuel of a small reactor, capable of adapting to fuel operation heads of different types and high in universality; in addition, the refueling gripper also has a mechanical anti-falling function.

Description

technical field [0001] The invention relates to the technical field of refueling of small reactors, in particular to a refueling handle that can be adapted to a special-shaped operation head. Background technique [0002] With the development of my country's nuclear power technology, nuclear power, as a clean energy source, has broad prospects for its development, especially the current development of the fourth-generation lead-cooled reactor, which has inherent safety characteristics and small and flexible characteristics, and has a wide range of applications. [0003] The refueling system of a nuclear power plant is a very important system, which involves operations such as fuel loading, hoisting, transportation and storage. Since the refueling system basically involves equipment that performs safety functions, the requirements for the design and manufacture of the corresponding equipment are relatively high. [0004] For a small reactor system, it has the characteristics...

AI Technical Summary

Problems solved by technology

However, the existing mature gripper structure generally adopts the structure of cylinder drive and connecting rod, which is relatively large in size. Whether it is an external gripping type or an internal gripping type, it occupies a large space and cannot meet the requirements of grasping small fuel operating heads. feature request for

At the same time, in the narrow space above the existing operating head, it is impossible to install a mechanical anti-drop mechanism, and it is impossible to mechanically prevent fuel drop accidents

[0005] Therefore, in order to overcome the problems of "bigger volume", "unable to grab small fuel operating head" and "no mechanical anti-drop function" of the above-mentioned refueling gripper, it is urgent to improve the existing gripper so as to obtain a Refueling grippers for small reactor fuel grabbing requirements

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