Drying tube positioning and exhausting device

Abstract

The invention belongs to a mechanical and electrical integration type nuclear power plant maintenance device and in particular relates to a drying tube positioning and exhausting device, which comprises a tube body. The upper part of the tube body is fixedly connected with a cover plate, one side of the upper part of the cover plate is provided with a bracket, the bracket is fixedly connected with a no-rod cylinder, an exhausting pipe is sleeved on the cover plate in a penetrating way, the upper part of the exhausting pipe is also provided with a pneumatic vacuum generator, the part of the exhausting pipe between the pneumatic vacuum generator and the cover plate is also connected with a connecting block, a core frame is sleeved outside the exhausting pipe, the top part of the core frame is connected with a core cover plate, the bottom of the core frame is connected with a connecting plate, a sliding guide tube is sleeved outside the core frame, the middle part of the sliding guide tube is provided with an annular slot, and the lower part of the connecting plate is connected with a positioning conical tube. The invention has the advantages that: the pneumatic vacuum generator is arranged outside the tube body, gas pumped by the no-rod cylinder is discharged outside the tube, the cleanness in the tube body can be ensured, the possibility of residue accumulation in the tube can be reduced, and a favorable environment can be provided for sliding in the tube.

Description

technical field [0001] The invention belongs to an electromechanical integrated nuclear power plant maintenance equipment, in particular to a drying cylinder positioning air extraction device. Background technique [0002] The reactor pressure vessel bolt hole cleaning machine is an automatic cleaning equipment for cleaning the anti-seize agent on the inner surface of the reactor pressure vessel bolt hole. Its working principle is mainly to fix a wire brush that can stretch up and down and rotate at the same time on a car body with a drive, and brush the inner surface of the bolt hole while spraying cleaning fluid, and at the same time suck away the waste liquid and slag generated. Then dry the brushed bolt holes, and finally use a nylon brush to clean the surface of the bolt holes again to thoroughly clean the bolt holes. It includes several main key equipment, including the positioning and extraction device of the drying cylinder. [0003] Existing drying cylinder positi...

AI Technical Summary

Problems solved by technology

The main disadvantage of this structure is that the exhaust gas of the pneumatic vacuum generator is directly discharged into the cylinder body and discharged through the upper exhaust hole, and various waste residues extracted from the cylinder are easy to accumulate in the cylinder, while the cylinder body 3 and the sliding guide cylinder 4 is a mating surface, the accumulation of waste slag will inevitably lead to the wear of the sliding mating surface and the reduction of fitting accuracy, which will eventually affect the accuracy of positioning

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