A flexible drive and emergency release device

Abstract

The invention provides a flexible drive and emergency tripping device. The flexible drive and emergency tripping device comprises a drive mechanism and a rigid push chain; the rigid push chain comprises a drive chain case, a guide rail, a chain wheel and a chain, wherein the drive chain case is arranged in the vertical tangential direction of the chain wheel, the guide rail is arranged in the horizontal tangential direction of the chain wheel, the chain wheel is rotationally matched with the chain, the chain is paved in the guide rail and the drive chain case, and is formed by a plurality of inner chain links and outer chain links fixedly installed in a staggered manner, one end, far from the drive chain case, of the chain is connected with a fuel transfer carriage; when the drive mechanism drives the chain wheel to rotate, the chain is drawn towards one side, far from the chain wheel, in the axial direction of the guide rail, and the fuel transfer carriage is driven to move towards the side far from the chain wheel; or the chain is contracted towards one side of the chain wheel in the axial direction of the guide rail to the drive chain case, and the fuel transfer carriage is driven to move towards the side of the chain wheel. Through the implementation of the flexible drive and emergency tripping device, the installation is simple, the installation space is saved, and moreover, the risk of interference with the fuel transfer carriage or other equipment is also avoided in case of emergency tripping.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a flexible drive and emergency release device. Background technique [0002] As one of the key components of the nuclear power plant fuel transfer system, the driving device for realizing the horizontal drive of the fuel transfer trolley is to drive the fuel transfer trolley after the new fuel assembly in the fuel plant is loaded into the fuel basket on the fuel transfer trolley From the fuel building to the reactor building, and after the new fuel assembly is taken out, the fuel transfer trolley is pulled back from the reactor building to the fuel building. However, when the drive device fails, it is necessary to separate the drive device from the fuel transfer trolley, and use the emergency release device to pull the fuel transfer trolley back to the fuel plant. [0003] In the prior art, the drive and emergency release of the fuel transfer trolley are an integrated devi...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the drive and emergency release of the fuel transfer trolley are an integrated device. The driving part adopts a traditional rack and pinion transmission structure, and the emergency release part adopts a manual hoist and an ordinary stainless steel chain with a transmission structure. However, there are disadvantages The reason is that the rack and pinion combined with the transmission structure takes up a lot of space. In order to ensure the reliable operation of the equipment, there must be certain requirements for the installation space of the equipment; at the same time, when the fuel transfer trolley is pulled back to the fuel plant, due to the stainless steel chain under its own gravity The state sinks and is stacked in the underwater chain box, and there is a risk of interference with the fuel transfer trolley

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