Unlock instant, AI-driven research and patent intelligence for your innovation.
Heavy-duty gas turbine blade TBCs interlayer crack eddy current detection probe and manufacturing method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for eddy current detection probes and turbine blades, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of unsuitable turbine blades, lifting and shaking, and inability to fit, so as to facilitate disassembly and reduce signal Interference, low sensitivity effects
Pending Publication Date: 2021-02-09
XIAN THERMAL POWER RES INST CO LTD
View PDF7 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
The blade shape of the turbine blade is an arc surface with gradual curvature. The existing eddy current detection probe cannot effectively fit the blade surface at different positions during the detection process, and it is easy to lift off and shake, resulting in a large interference signal. The probability of misjudgment and missed inspection increases, and it is not suitable for the detection of interlaminar crack defects in TBCs of turbine blades
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0040] Such as figure 1 As shown, a heavy-duty gas turbine blade TBCs interlayer crack eddy current detection probe includes: magnetic core 1, excitation coil 2, detection coil 3, casing 4, hard rubber layer 5, flexible rubber clay layer 6, and insulating tape Layer 7, signal transmission line 8.
[0041] This embodiment can specifically be realized like this:
[0042] 1) Make a manganese-zinc ferrite cylindrical magnetic core with a diameter of 1.5mm and a length of 5mm;
[0043] 2) Select a copper wire with a diameter of 0.06mm, and wind an eddy current detection excitation coil and a detection coil, the inner diameter of the coil is 2mm, and the outer diameter is 4mm;
[0044] 3) Put the eddy current detection excitation coil and detection coil on the magnetic core and fix them;
[0045] 4) Processing probe plastic steel shell 1, the outer diameter is 6mm;
[0046] 5) Make a sealing hard rubber layer at the bottom of the probe, with a thickness of 1.2mm;
[0047] 6) Fi...
Embodiment 2
[0059] Such as figure 1As shown, a heavy-duty gas turbine blade TBCs interlayer crack eddy current detection probe includes: magnetic core 1, excitation coil 2, detection coil 3, casing 4, hard rubber layer 5, flexible rubber clay layer 6, and insulating tape Layer 7, signal transmission line 8.
[0060] This embodiment can specifically be realized like this:
[0061] 1) Make a manganese-zinc ferrite cylindrical magnetic core with a diameter of 2mm and a length of 6mm;
[0062] 2) Select a copper wire with a diameter of 0.06mm, and wind an eddy current detection excitation coil and a detection coil, the inner diameter of the coil is 2mm, and the outer diameter is 4mm;
[0063] 3) Put the eddy current detection excitation coil and detection coil on the magnetic core and fix them;
[0064] 4) Processing probe plastic steel shell 1, the outer diameter is 7mm;
[0065] 5) Make a sealing hard rubber layer at the bottom of the probe, with a thickness of 1mm;
[0066] 6) Fill th...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Property
Measurement
Unit
Diameter
aaaaa
aaaaa
Length
aaaaa
aaaaa
Diameter
aaaaa
aaaaa
Login to View More
Abstract
The invention discloses a heavy-duty gas turbine blade TBCs interlayer crack eddy current detection probe and a manufacturing method, and belongs to the field of nondestructive testing, the eddy current detection probe comprises a magnetic core, an excitation coil, a detection coil, a shell, a probe bottom seal, and a signaltransmission line. The manufacturing method of the eddy current testing probe comprises the following steps: manufacturing the cylindrical magnetic core; winding an excitation coil and a detection coil; processing a probe plastic steel shell; manufacturing a probe bottom seal; plugging the bottom of the shell by using a probe bottom sealing block; and connecting a signaltransmission line. The eddy current detection probe has high sensitivity to turbine blade TBCs interlayer crack signals, can be well attached to a blade profile, reduces interference caused by probe shaking and lift-off, and can effectively detect turbine blade TBCs interlayer crack defects with the minimum size of 0.1 mm in depth and 2 mm in length, and the flexible rubber mud layer and the insulating tape layer of the probe bottom sealing block are convenient to disassemble and replace.
Description
technical field [0001] The invention belongs to the technical field of eddy current detection, and in particular relates to an eddy current detection probe for interlayer cracks in TBCs of heavy-duty gas turbine blades and a manufacturing method. Background technique [0002] Turbine blades are the core components of heavy-duty gas turbines and are made of high-temperature alloys with excellent high-temperature mechanical properties. In order to improve the service temperature, corrosion and oxidation resistance and prolong the service life of the turbine blades, thermal barrier coatings (Thermal Barrier Coatings, TBCs) are sprayed on the surface of the turbine blades. TBCs are composed of a surface ceramic layer and a bonding layer. The surface ceramic layer mainly plays the role of heat insulation and cooling. The function of the bonding layer is to reduce the stress caused by the mismatch of thermal expansion coefficient between the ceramic layer and the superalloy substr...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More