| 摘要 |
Flexible shaft assembly is used as carrier of eddy current probe for tubing examination. Basically this invention is applied in assembly of eddy current bobbin probe for examination of tubes in steam generators mounted in WWER type of nuclear power plant (Ø 13 mm inside diameter of tube). This assembly provides excellent flexibility, while remaining inside spring's elastic area. This feature enables that soldering joints of thin wires remain stable. Basic element of assembly is extension spring with dimension Ø7/Ø4 mm. Nylon pearls are mounted on the spring. After every 30 pearls, stainless steel ring is mounted and crimped to the spring preventing pearls to move axially along spring. |
