Blocking arrangement for mechanism for handling fuel assemblies in nuclear reactors专利检索-燃料组件核能专利检索查询-专利查询网

Blocking arrangement for mechanism for handling fuel assemblies in nuclear reactors

阅读：749发布：2022-11-17

专利汇可以提供Blocking arrangement for mechanism for handling fuel assemblies in nuclear reactors专利检索，专利查询，专利分析的服务。并且Fuel assemblies for nuclear reactors are positioned in a receiving member, from which they, as well as a control rod, can be lifted by a gripping device having two legs pivoted to each other. A stop arrangement is provided which prevents the gripping device from lowering the fuel assembly all the way into the receiving member unless it is properly oriented with respect thereto.，下面是Blocking arrangement for mechanism for handling fuel assemblies in nuclear reactors专利的具体信息内容。

权利要求

1. In a nuclear reactor, a core comprising a plurality of vertically arranged elongated fuel assembly containers, a container grid transverse to said containers, the grid having upwardly facing top surfaces, each container position being surrounded along part only of its circumference by adjacent grid portions having such top surfaces, fuel assemblies individually mounted in said containers within said grid, each fuel assembly having a lifting handle lying mainly in a vertical plane, a gripping device for moving fuel assemblies to and from said containers, the gripping device having a handle hook means and a simultaneously operating container gripping hook means, said container and handle hook means always having the same mutual orientation during engagement of said handle hook means with the handle, said container having attachment apertures for said container gripping hook means, said gripping device having a stop, the upwardly facing top surfaces of said adjacent grid portions constituting a blocking surface engageable with said stop at undesired angular orientations of said handle in relation to grid parts lying in vertical planes.

2. In a nuclear reactor as claimed in claim 1, at least some of said fuel assemblies being asymmetrical about a vertical axis, and said stop engaging said blocking surface in any orientation of said gripping device with respect to said vertical axis other than a single correct orientation.

3. In a nuclear reactor as claimed in claim 2, said top surfaces of the grid portions having openings therein asymmetrically positioned with respect to the vertical axis and said stop being positioned with respect to the vertical axis of a fuel assembly to engage said top surface in any orientation of the fuel assembly other than the correct one.

4. In a nuclear reactor according to claim 1, means for interrupting a lowering movement of said gripping device in response to an engagement of said stop with said surface, said interrupting means including an electric switching means and a mechanical transmission connected to one of said gripping members operatively connected to said switching means.

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Blocking arrangement for mechanism for handling fuel assemblies in nuclear reactors

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