Spring-force measuring device
AssigneeKraftwerk Union Aktiengesellschaft
InventorsJosef Steven, Helmut Bezold
Life of this patent
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Abstract
Device for measuring the spring-force of resilient spacer projections set into spacer grids of nuclear reactor fuel assemblies to push fuel rods surrounded by spacer meshes against at least two oppositely disposed rigid spacer projections, including a force measuring plug having a diameter equal to the diameter of a fuel rod to be fixed in the spacer grid, and a flexible beam integral with the force measuring plug, the flexible beam having a free end in contact with a first resilient spacer projection to be measured, and another end firmly connected to the force measuring plug and having at least one wire strain gage disposed thereon.
Claims3
Handheld device for measuring the spring-force of resilient spacer projections set into spacer grids of nuclear reactor fuel assemblies to push fuel rods surrounded by spacer meshes against at least two oppositely disposed rigid spacer projections, comprising a force measuring plug having a diameter equal to the diameter of a fuel rod to be fixed in the spacer grid, and a flexible beam integral with said force measuring plug, said flexible beam having a free end in contact with a first resilient spacer projection to be measured, and another end firmly connected to said force measuring plug and having at least one wire strain gage disposed thereon, said flexible beam being formed by a stress-free slot formed in said force measuring plug.
Hand-held device for measuring the spring-force of resilient spacer projections set into spacer grids of nuclear reactor fuel assemblies to push fuel rods surrounded by spacer meshes against at least two oppositely disposed rigid spacer projections, comprising a force measuring plug having a diameter equal to the diameter of a fuel rod to be fixed in the spacer grid, and a flexible beam integral with said force measuring plug, said flexible beam having a free end in contact with a first resilient spacer projection to be measured, and another end firmly connected to said force measuring plug and having at least one wire strain gage disposed thereon, said force measuring plug being hollow and having a lateral hole formed therein, said other end of said flexible beam being centered within said hollow force measuring plug, and including a pin disposed on said free end of said flexible beam extending radially through said lateral hole, said pin having a rounded end contactable with said first resilient spacer projection.
Dependencies are inferred from the claim text.