Inspection carriage for turbine blades
First Claim
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1. An inspection carriage, comprising:
- a main body having means for securing to a blade of a turbine;
a slider assembly reciprocably mounted on the main body, the slider assembly being structured for movement between a retracted position and an extended position;
a probe head rotatably mounted on the slider assembly, the probe head having a rotation axis structured for rotation about an axis substantially parallel to the direction of movement of the slider, and an axial axis structured for lateral movement of the probe head in a direction substantially perpendicular to the slider, the probe head being structured to fit within a Z-shroud or a snubber region of a turbine, and to perform a nondestructive inspection of the Z-shroud or snubber region of the turbine.
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Abstract
An inspection carriage provides for remote inspection of the Z-shroud and snubber regions of the blades of a steam turbine, while the blades remain in the turbine. The carriage includes a non-destructive inspection probe such as a meandering wave magnetometer probe or eddy current probe mounted on a slider, so that the probe may be moved along a radial axis, skew axis, axial axis, and rotation axis. Cameras are provided on the carriage so that the probe may be remotely guided into the region to be inspected.
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Citations
20 Claims
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1. An inspection carriage, comprising:
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a main body having means for securing to a blade of a turbine; a slider assembly reciprocably mounted on the main body, the slider assembly being structured for movement between a retracted position and an extended position; a probe head rotatably mounted on the slider assembly, the probe head having a rotation axis structured for rotation about an axis substantially parallel to the direction of movement of the slider, and an axial axis structured for lateral movement of the probe head in a direction substantially perpendicular to the slider, the probe head being structured to fit within a Z-shroud or a snubber region of a turbine, and to perform a nondestructive inspection of the Z-shroud or snubber region of the turbine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification