Method and apparatus for detecting and locating defects in a component of a turbine
First Claim
1. A method for detecting and locating defects in a component of a turbine, which comprises:
- determining at least one measured value during operation of a turbine;
comparing the at least one measured value to a standard for detecting a defect; and
when a deviation from the standard value in the at least one measured value is determined during operation of the turbine, inserting a probe into the interior of the turbine; and
measuring a first acoustic spectrum generated by a component of the turbine with the probe and comparing the first acoustic spectrum with a first reference spectrum to locate the defect.
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Accused Products
Abstract
In a method for the early detection and location of a change in a component of a turbine, in particular in a turbine blade, in the event of a deviation from a standard value in at least one measured value determined during operation of the turbine, an acoustic spectrum generated by the component is measured in the interior of the turbine and compared with a reference spectrum. In order to increase the intensity of signals in the acoustic spectrum, the components of the turbine, preferably runner blades, are excited from outside to acoustic emission (resonance test). An apparatus has a number of sensors for recording operating parameters of the turbine. The sensors are connected to a device for measured value conditioning. In order to detect and locate changes, an acoustic measurement probe which can be inserted from the outside into the interior of the turbine, is connected to the device.
117 Citations
17 Claims
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1. A method for detecting and locating defects in a component of a turbine, which comprises:
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determining at least one measured value during operation of a turbine; comparing the at least one measured value to a standard for detecting a defect; and when a deviation from the standard value in the at least one measured value is determined during operation of the turbine, inserting a probe into the interior of the turbine; and measuring a first acoustic spectrum generated by a component of the turbine with the probe and comparing the first acoustic spectrum with a first reference spectrum to locate the defect. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for detecting and locating defects in a turbine blade of a turbine, which comprises:
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determining at least one measured value during operation of a turbine; comparing the at least one measured value to a standard value for detecting a defect; and when a deviation from the standard value in the at least one measured value is determined during operation of the turbine, inserting a probe into the interior of the turbine; and measuring an acoustic spectrum generated by a turbine blade of the turbine with the probe and comparing the acoustic spectrum with a reference spectrum to locate the defect.
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12. An apparatus for detecting and locating defects in a component of a turbine, comprising:
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a device for measured value conditioning of a turbine; a plurality of sensors being connected to said device for recording operating parameters of the turbine for detecting a defect; and an acoustic measurement probe being connected to said device and being insertable from the outside into the interior of the turbine for locating the defect. - View Dependent Claims (13, 14, 15, 16)
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17. An apparatus for detecting and locating of defects in a turbine blade of a turbine, comprising:
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a device for measured value conditioning of a turbine; a plurality of sensors being connected to said device for recording operating parameters of the turbine for detecting a defect; and an acoustic measurement probe being connected to said device and being insertable from the outside into the interior of the turbine for locating the defect.
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Specification