CN109581519A - A kind of x-ray detection device and method for engine blade inner cavity foreign matter - Google Patents
A kind of x-ray detection device and method for engine blade inner cavity foreign matter Download PDFInfo
- Publication number
- CN109581519A CN109581519A CN201811428184.6A CN201811428184A CN109581519A CN 109581519 A CN109581519 A CN 109581519A CN 201811428184 A CN201811428184 A CN 201811428184A CN 109581519 A CN109581519 A CN 109581519A
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- China
- Prior art keywords
- ray
- engine blade
- filter band
- foreign matter
- inner cavity
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 36
- 229910052802 copper Inorganic materials 0.000 claims description 36
- 239000010949 copper Substances 0.000 claims description 36
- 239000004411 aluminium Substances 0.000 claims description 33
- 229910052782 aluminium Inorganic materials 0.000 claims description 33
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 33
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 30
- 229910052718 tin Inorganic materials 0.000 claims description 24
- 239000011135 tin Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000001228 spectrum Methods 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000008450 motivation Effects 0.000 claims 1
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- G01V5/22—
Abstract
The present invention relates to a kind of x-ray detection devices and method for engine blade inner cavity foreign matter, engine blade is placed on X-ray detection platform, filter band is set among radiographic source and engine blade to be detected, planar array detector is set below engine blade to be detected, and is connect with computer；It controls radiographic source and issues X-ray, obtain the X-ray of single energy by filter band, be irradiated on detector across engine blade, each point transmitted intensity is acquired by detector；The Digital Detecting image of engine blade is obtained by detector digital-to-analogue conversion；Filter plate thickness and type in the emitted energy and filter band of radiographic source is adjusted to detect again；Will collected Digital Detecting image enhancement processing twice, display whether there is foreign matter on treated image.The present invention, which only needs to carry out transillumination and simple image procossing twice, can be completed detection, and efficiency improves 5~10 times, do not limited by factors such as blade styles to be detected, shapes and sizes.
Description
Technical field
The present invention relates to foreign material detecting technique field, specially a kind of X-ray for engine blade inner cavity foreign matter is examined
Survey device and method.
Background technique
Blade is the key components and parts of engine, in order to enable blade to work in the high temperature environment for a long time, blade interior
It is generally configured to complicated loop, to facilitate cold air to blade cooling.But complicated cooling circuit is while improving efficiency, but
Foreign matter is easy to happen in the remaining problem in inner cavity.Therefore it needs to detect blade inner cavity residue, to determine whether there is
Foreign matter and position etc..To the remaining foreign matter in blade inner cavity carry out ray detection when, it is existing there are many ways to, one is
Select indemnity or compensation, such as method to blade lumen loading metal powder or filling potassium iodide solution, this method
Efficiency is very low, and detection cycle is long, needs auxiliary mould or tool, and metal powder or compensation melt are not cleaned out, residual
Blade interior is stayed in, the service performance of blade can be seriously affected；One is indemnity or compensation is not filled with, ray is directly carried out
Transillumination detection, this method detection efficiency is greatly improved compared with the former, but sensitivity is very low, or even can not find lesser foreign matter；
In addition there are the methods using CT tomoscan to detect blade inner cavity foreign matter, and this method is costly, and efficiency is also very low.
Summary of the invention
For engine blade inner cavity foreign bodies detection low efficiency in the prior art, the period is long, costly the deficiencies of, the present invention
Solve the problems, such as that testing cost can be reduced, improve detection efficiency under the premise of guaranteeing that testing result is reliable by being to provide one kind
The x-ray detection device and method for blade inner cavity foreign matter.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of detection method of X-ray for engine blade inner cavity foreign matter of the present invention, comprising the following steps:
1) engine blade to be detected is placed on X-ray detection platform, in radiographic source and engine blade to be detected
Between filter band is set, planar array detector is set below engine blade to be detected, and the planar array detector and computer are connected
It connects；
2) control radiographic source issues X-ray, obtains the continuous white X-ray radiation of power spectrum, after filter band, obtains single energy
The X-ray of amount, ray are then passed through engine blade and are irradiated on detector, acquire each point transmitted intensity by detector；
3) pass through detector digital-to-analogue conversion, obtain the Digital Detecting image of engine blade；
4) filter plate thickness and type in the emitted energy and filter band of radiographic source are adjusted, and repeats step 2) and 3)；
5) collected Digital Detecting image it will subtract each other and be handled with intensity contrast enhancing twice, on treated image
Display whether there is foreign matter.
The filter band is copper, aluminium, tin filter band, and wherein tin filter band is in X-ray production apparatus side, during copper filter band is in
Between, aluminium filter band should be adjacent to placement between engine blade side, each layer filter band.
In step 2), when ray tube is more than 200keV to energy, on the basis of sheet tin 1mm, copper, aluminium, tin filter band
Thickness recommendation ratio is 1:1.5:5；When ray tube is relatively lower than 150keV to energy, then sheet tin is removed, while reducing copper sheet
With the thickness of aluminium sheet, on the basis of copper sheet 0.5mm, copper sheet and aluminium plate thickness recommendation ratio are 1:4, and aluminium sheet is most thick to be no more than 5mm.
The engine blade being placed on X-ray detection platform is more pieces, and laying flat between engine blade cannot be overlapped.
A kind of x-ray detection device for engine blade inner cavity foreign matter of the present invention, it is characterised in that examined including X-ray
Survey platform and filter band (2) and planar array detector (4), wherein engine leaf to be detected is placed on X-ray detection platform
Filter band (2) are installed in piece (3), engine blade (3) top, and the planar array detector (4) of X-ray detection platform is set to engine leaf
Below piece (3), the X-ray production apparatus (1) of X-ray detection platform is installed on the top of filter band (2).
The filter band (2) includes copper filter band, aluminium filter band and tin filter band, and wherein tin filter band is close to X-ray
Machine side, copper filter band are in centre, and aluminium filter band is adjacent to placement between 3 side of engine blade, each layer filter band.
Copper sheet can be replaced with steel class plate or zine plate, and thickness is constant；Sheet tin can be replaced with stereotype by the thickness of 5:1, all kinds of
The smooth no marking impression of plate surface.
The invention has the following beneficial effects and advantage:
1. the present invention detects blade inner cavity foreign matter, it is only necessary to carry out transillumination and simple image procossing twice
It completes, detection method is simple, and it is easy to operate, it is no more than one minute the time required to average single blade detection, is common penalty method
5~10 times of detection efficiency, while the present invention is not limited by factors such as blade styles to be detected, shapes and sizes, applicability is wide,
With remarkable advantage.
Detailed description of the invention
Fig. 1 is blade inner cavity detection device for foreign matter structural schematic diagram of the present invention；
Fig. 2A is the low energy detection image in the present invention；
Fig. 2 B is the high energy detection image in the present invention；
Fig. 2 C is treated image by the method for the invention.
Wherein, 1 is X-ray production apparatus, and 2 be filter band, and 3 be engine blade, and 4 be area array detector.
Specific embodiment
The present invention is further elaborated with reference to the accompanying drawings of the specification.
As shown in Figure 1, a kind of detection method of X-ray for engine blade inner cavity foreign matter of the present invention, including following step
It is rapid:
1) engine blade 3 to be detected is placed on X-ray detection platform, in radiographic source and engine blade to be detected 3
Planar array detector 4 is arranged below engine blade 3 to be detected, and by the planar array detector 4 and calculates for setting filter band in centre
Machine connection；
2) control radiographic source, that is, X-ray production apparatus 1 issues X-ray, obtains the continuous white X-ray radiation of power spectrum, after filter band,
Power spectrum is obtained close to the X-ray of single (narrow beam), ray is then passed through engine blade 3 and is irradiated on planar array detector 4, passes through face
Array detector acquires each point transmitted intensity；
3) pass through planar array detector digital-to-analogue conversion, obtain the Digital Detecting image of engine blade 3；
4) filter plate thickness and type in the emitted energy and filter band 2 of radiographic source are adjusted, and repeats step 2) and 3)；
5) collected Digital Detecting image it will subtract each other and be handled with intensity contrast enhancing twice, on treated image
Display whether there is foreign matter.
In the present embodiment, step 1) is carried out in three steps operation:
101) blade to be detected tiling is placed on X-ray detection platform, more pieces of blades can be placed, cannot be weighed between blade
It is folded；
102) copper, aluminium, tin filter band are arranged among radiographic source and engine blade to be detected (in the present embodiment, will filter
Wave plate is installed in the radiation emanation window of X-ray production apparatus), if the ray tube institute of X-ray production apparatus is lower than 150keV to energy,
Copper removal and sheet tin are removed, while adjusting the thickness of aluminium sheet, aluminium sheet is finally no more than 5mm, when ray tube power increases above 250keV
When, then the thickness of copper, aluminium, tin filter band should be thickeied, for tin filter band close to X-ray production apparatus side, copper filter band is in centre, aluminium filter
Wave plate is adjacent to placement between 3 side of engine blade, each layer filter band；
In the present embodiment, when the ray tube of X-ray production apparatus 1 is more than 200keV to energy, on the basis of sheet tin 1mm, copper,
Aluminium, tin filtering plate thickness recommendation ratio are 1:1.5:5；When ray tube is relatively lower than 150keV to energy, then sheet tin is removed, together
When reduce the thickness of copper sheet and aluminium sheet, on the basis of copper sheet 0.5mm, copper sheet and aluminium plate thickness recommendation ratio are 1:4, and aluminium sheet is most thick
No more than 5mm.
Copper sheet can be replaced with steel class plate or zine plate, and thickness is constant；Sheet tin can be replaced with stereotype by the thickness of 5:1, all kinds of
The smooth no marking impression of plate surface.
In the present embodiment, copper, aluminium, tin thickness can be finely adjusted, but cannot replace, such as be filtered using copper from each other
Plate substitutes aluminium filter band.But steel class plate or the replacement of zinc filter band can be used in copper filter band, and thickness can be constant, tin filter band
Lead filter band substitution (replacing by the thickness of 5:1) can be used, but regardless of selecting what kind of plate to require plate surface
It is smooth, there cannot be scratch impression etc..
103) planar array detector is set below engine blade, and the detector is connect with computer；
In step 2), control radiographic source issue X-ray, obtain can spectrum width white X-ray radiation, the minimum wavelength λ of power spectrum and
The X-ray production apparatus tube voltage V of setting is related, meets λ=12.4 × 1010/ 12.4 (m), ray obtains approximate single after filter band
The X-ray of one energy, ray are then passed through blade and are irradiated on planar array detector, acquire each point transmitted intensity by detector；
Step 5) will be subtracted each other collected digital picture progress pixel value twice by image analysis softwares such as ImageJ
Enhance with intensity contrast, can show on treated image with the presence or absence of foreign matter.
As shown in Fig. 2A~2C, for the detection image obtained using this method.Wherein Fig. 2A show X-ray machine X tube voltage
120kV, filter band use the detection image of 0.5mm (copper)+2mm (aluminium)；X-ray machine X tube voltage 350kV, filter band shown in Fig. 2 B
Using the detection image of 1mm (tin)+2mm (copper)+5mm (aluminium)；Shown in Fig. 2 C, to be asked using ImageJ software two images
Difference, and the image after contrast improves has been carried out, arrow meaning is foreign matter image.
When ray tube is more than 200keV to energy, on the basis of sheet tin 1mm, copper, aluminium, tin filtering plate thickness recommend ratio
Example is 1:1.5:5；When ray tube is relatively lower than 150keV to energy, then sheet tin is removed, while reducing the thickness of copper sheet and aluminium sheet
Degree, on the basis of copper sheet 0.5mm, copper sheet and aluminium plate thickness recommendation ratio are 1:4, and aluminium sheet is most thick to be no more than 5mm.
Claims (7)
1. a kind of detection method of X-ray for engine blade inner cavity foreign matter, it is characterised in that the following steps are included:
1) engine blade to be detected is placed on X-ray detection platform, is set among radiographic source and engine blade to be detected
Filter band is set, planar array detector is set below engine blade to be detected, and the planar array detector is connect with computer；
2) control radiographic source issues X-ray, obtains the continuous white X-ray radiation of power spectrum and obtains single energy after filter band
X-ray, ray are then passed through engine blade and are irradiated on detector, acquire each point transmitted intensity by detector；
3) pass through detector digital-to-analogue conversion, obtain the Digital Detecting image of engine blade；
4) filter plate thickness and type in the emitted energy and filter band of radiographic source are adjusted, and repeats step 2) and 3)；
5) collected Digital Detecting image it will subtract each other and be handled with intensity contrast enhancing twice, be shown on treated image
With the presence or absence of foreign matter.
2. the detection method of X-ray according to claim 1 for engine blade inner cavity foreign matter, it is characterised in that: institute
Stating filter band is copper, aluminium, tin filter band, and wherein tin filter band is in centre, aluminium filter band in X-ray production apparatus side, copper filter band
Placement should be adjacent between engine blade side, each layer filter band.
3. the detection method of X-ray according to claim 1 for engine blade inner cavity foreign matter, it is characterised in that: step
It is rapid 2) in, when ray tube is more than 200keV to energy, on the basis of sheet tin 1mm, copper, aluminium, tin filtering plate thickness recommend ratio
Example is 1:1.5:5；When ray tube institute is lower than 150keV to energy, then sheet tin is removed, while reducing the thickness of copper sheet and aluminium sheet,
On the basis of copper sheet 0.5mm, copper sheet and aluminium plate thickness recommendation ratio are 1:4, and aluminium sheet is most thick to be no more than 5mm.
4. the detection method of X-ray according to claim 1 for engine blade inner cavity foreign matter, it is characterised in that: set
It is more pieces in the engine blade on X-ray detection platform, laying flat between engine blade cannot be overlapped.
5. a kind of x-ray detection device for engine blade inner cavity foreign matter, it is characterised in that including X-ray detection platform with
And filter band (2) and planar array detector (4), wherein place engine blade to be detected (3), send out on X-ray detection platform
Filter band (2) are installed above motivation blade (3), the planar array detector (4) of X-ray detection platform is set under engine blade (3)
Side, the X-ray production apparatus (1) of X-ray detection platform are installed on the top of filter band (2).
6. the x-ray detection device according to claim 5 for engine blade inner cavity foreign matter, it is characterised in that: institute
Stating filter band (2) includes copper filter band, aluminium filter band and tin filter band, and wherein tin filter band is close to X-ray production apparatus side, copper filter
Wave plate is in centre, and aluminium filter band is adjacent to placement between 3 side of engine blade, each layer filter band.
7. the x-ray detection device according to claim 6 for engine blade inner cavity foreign matter, it is characterised in that: copper
Plate can be replaced with steel class plate or zine plate, and thickness is constant；Sheet tin can be replaced with stereotype by the thickness of 5:1, all kinds of plate surface light
Sliding smooth no marking impression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811428184.6A CN109581519A (en) | 2018-11-27 | 2018-11-27 | A kind of x-ray detection device and method for engine blade inner cavity foreign matter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811428184.6A CN109581519A (en) | 2018-11-27 | 2018-11-27 | A kind of x-ray detection device and method for engine blade inner cavity foreign matter |
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| Publication Number | Publication Date |
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| CN109581519A true CN109581519A (en) | 2019-04-05 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811428184.6A Pending CN109581519A (en) | 2018-11-27 | 2018-11-27 | A kind of x-ray detection device and method for engine blade inner cavity foreign matter |
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| CN110954967A (en) * | 2019-12-11 | 2020-04-03 | 江西莱利电气有限公司 | Device and method for detecting foreign matters in fan |
| CN112051286A (en) * | 2020-09-17 | 2020-12-08 | 中国航发沈阳黎明航空发动机有限责任公司 | Special X-ray detection tool for casting high-vortex blade |
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Application publication date: 20190405 |