Turbine blade laser cladding detection device and detection method

A technology for steam turbine blades and laser cladding, applied in the field of blade processing, can solve the problems affecting the output power and service life of the unit, the steam inlet edge of the blade tip, and the blade endangering the safe operation of the unit, so as to reduce the measurement cost, release the production capacity, and ensure that the The effect of cladding quality

Pending Publication Date: 2021-10-22
WUXI TURBINE BLADE
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Problems solved by technology

[0002] The working environment of the last-stage blades of the steam turbine is water vapor. During high-speed operation, the final-stage blades are easily affected by water droplets and water vapor in the steam under the action of rotational speed and centrifugal force, resulting in water erosion at the steam inlet edge of the blade top, water erosion It will affect the output power and service life of the entire unit, and the risk of blade breakage will endanger the safe operation of the entire unit

Method used

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  • Turbine blade laser cladding detection device and detection method
  • Turbine blade laser cladding detection device and detection method
  • Turbine blade laser cladding detection device and detection method

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Embodiment Construction

[0024] Such as Figure 4-Figure 8 A laser cladding detection device for a steam turbine blade is shown, which includes a cladding area marking line sample 1, a cladding groove shape sample 2, a cladding area clamping sample 3, a cladding area thickness sample 4, and a cladding repair welding Sample 5, when in use, can be placed on the conventional detection frame, and designed according to the shape of the actual gear height; combined with Figure 4 , the cladding zone line sample block 1 includes a sharp edge 11 for marking the inner arc surface of the blade to be processed and the back camber surface of the blade profile, and the cladding zone line sample block 1 also includes The scribed groove 13 in the middle of the sample block, the inner surface of the scribed groove is the inlet side positioning surface 12, the inlet side locating surface 12 is used to contact the inlet edge of the blade 100 to be processed, the two ends of the scribed groove 13 with sharp edges 11, s...

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Abstract

The invention provides a turbine blade laser cladding detection device, which can be used for detecting a blade laser cladding area, is convenient to use, ensures the cladding quality, and also provides a detection method using the detection device. The detection device comprises a cladding groove shape sample plate, a cladding area clamp repair sample plate and a cladding area thickness sample plate; the cladding groove shape sample plate comprises a cladding groove contour measuring surface, and the cladding groove contour measuring surface corresponds to the cladding groove contour of the standard part; the cladding area clamp repair template comprises a first molded line positioning surface, a first alignment groove and a first cladding area contour measuring surface, and the first cladding area contour measuring surface corresponds to a semi-finished product cladding area standard component in shape; the cladding area thickness sample plate comprises a second molded line positioning face, a second alignment groove and a second cladding area contour measuring face, and the second cladding area contour measuring face corresponds to the semi-finished product cladding area standard part in shape.

Description

technical field [0001] The invention relates to the technical field of blade processing, in particular to a steam turbine blade laser cladding detection device and detection method. Background technique [0002] The working environment of the last-stage blades of the steam turbine is water vapor. During high-speed operation, the final-stage blades are easily affected by water droplets and water vapor in the steam under the action of rotational speed and centrifugal force, resulting in water erosion at the steam inlet edge of the blade top, water erosion It will affect the output power and service life of the entire unit, and the risk of blade breakage will endanger the safe operation of the entire unit. As a relatively advanced laser surface strengthening method at present, laser cladding has been applied in batches on the last stage blades of multiple units. The high hardness and high wear resistance of the alloy are used to improve the water erosion resistance of the air ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/06G01B11/24
CPCG01B11/06G01B11/24
Inventor 董欣欣王成富章奇朱银山王进滕树新潘利军
Owner WUXI TURBINE BLADE
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