JPS63132108A - Automatic inspecting method for bucket corrosion quantity - Google Patents
Automatic inspecting method for bucket corrosion quantityInfo
- Publication number
- JPS63132108A JPS63132108A JP27842486A JP27842486A JPS63132108A JP S63132108 A JPS63132108 A JP S63132108A JP 27842486 A JP27842486 A JP 27842486A JP 27842486 A JP27842486 A JP 27842486A JP S63132108 A JPS63132108 A JP S63132108A
- Authority
- JP
- Japan
- Prior art keywords
- image
- bucket
- stellite
- blade
- corrosion
- Prior art date
- 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
- 238000000034 method Methods 0.000 title claims description 13
- 238000005260 corrosion Methods 0.000 title abstract 7
- 230000007797 corrosion Effects 0.000 title abstract 7
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000007689 inspection Methods 0.000 claims abstract description 15
- 229910001347 Stellite Inorganic materials 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 6
- 238000009792 diffusion process Methods 0.000 claims abstract description 5
- 230000003628 erosive effect Effects 0.000 claims description 27
- 238000000605 extraction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、タービン動翼の浸食量を光学式検出方法で求
める翼侵食量自動検査方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an automatic blade erosion amount inspection method for determining the amount of erosion of a turbine rotor blade using an optical detection method.
タービンの定検時においては、動翼の侵食状況を毎回写
真に撮シ、轟回の状況を前回のそれと目視で比較して侵
食進展状況を検出し、動翼取替時期の判定を行っておシ
、従来の検査方法では、第２図説明図に示すように、同
図（Ａ）斜視図において、動翼１の前、鰍ステライト部
２の侵食部分４を、翼面前方からカメラ１４で撮影し、
同図ＣＢ）正面図に示すように、前回の写真１５と同図
（Ｃ）の当回の写真１６とを比べ、侵食の寸法１７．１
８を目視で比較して侵食進展状況を把１し、取替の要否
判断を下している。During periodic inspections of turbines, we take photographs of the rotor blade erosion status every time, visually compare the roaring conditions with the previous inspection to detect the progress of erosion, and determine when it is time to replace the rotor blades. In the conventional inspection method, as shown in the explanatory diagram of FIG. 2, in the perspective view of FIG. Take a picture with
As shown in the front view (CB) of the same figure, comparing the previous photo 15 with the current photo 16 of the same figure (C), the size of the erosion is 17.1.
8 to visually compare the progress of erosion to determine whether or not replacement is necessary.
しかしながら、このような方法においては。However, in such a method.
唯翼面前方からカメラ１４で撮影した前回写真１５と当
回写真１６とを比べ、侵食の寸法１７と１８とを目視で
比較するものであるので、侵食寸法１７．１８の基準線
となるステライト境界部３が写真１５．１６の上に必ず
しも明確に表われず、また寸法１７．１８も数値表示が
付されていないため、写真上の寸法測定位置による誤差
及び測定者の違いてよる誤差が生じ勝ちで、正確な寸法
測定が困難である。The previous photo 15 taken with the camera 14 from the front of the wing surface is compared with the current photo 16, and the erosion dimensions 17 and 18 are visually compared. Boundary part 3 is not necessarily clearly shown on photo 15.16, and dimensions 17.18 are not numerically indicated, so there may be errors due to the measurement position on the photo or due to differences in the measurer. It is difficult to measure the dimensions accurately.
本発明は、このような事情洗鑑みて提案されたもので、
ステライト境界部が明確に映出されるとともに侵食寸法
が画像上に数値表示され、かつこれら撮影及び画像映出
が自動的に高精度かつ容易に行われる翼侵食量自動検査
方法を提供することを目的とする。The present invention was proposed in consideration of such circumstances, and
The purpose of the present invention is to provide an automatic blade erosion amount inspection method in which the stellite boundary area is clearly imaged, the erosion dimensions are numerically displayed on the image, and the photographing and image projection are automatically performed with high accuracy and ease. shall be.
そのために本発明は、タービン動翼にその裏面から光拡
散ガラスを介して光を当てて投影される翼侵食部形状の
透過画像と、上記タービン動翼の表面から翼侵食部寸法
の基準線となるステライト境界部に光を当ててその部分
から反射される反射画像とをテレビカメラで別々に撮影
し、これら２画像を画像処理装置で合わせるとともに翼
侵食部寸法数値を、演算し翼侵食部寸法数値の表示され
た画像を表示器に映出させることを特徴とする。To this end, the present invention provides a transmission image of the shape of the blade erosion portion projected by shining light onto the turbine rotor blade from the back surface thereof through a light diffusion glass, and a reference line of the blade erosion portion dimension from the surface of the turbine rotor blade. Shine light on the stellite boundary and take a picture of the reflected image from that part separately with a television camera, combine these two images with an image processing device, calculate the numerical value of the dimension of the blade erosion part, and calculate the dimension of the blade erosion part. It is characterized by displaying an image on which numerical values are displayed on a display.
〔作 用〕
上述の構成によシ、ステライト境界部が明確に映出され
るとともに侵食寸法が画像上に数値表示され、かつこれ
ら撮影及び画像映出。[Function] With the above configuration, the stellite boundary is clearly projected, the erosion dimension is displayed numerically on the image, and these images are photographed and projected.
が自動的に高精度かつ容易に行われる翼浸食量自動検査
方法を得ることができる。It is possible to obtain an automatic blade erosion amount inspection method that is automatically performed with high accuracy and easily.
本発明の一実施例を図面について説明すると、第１図（
Ａ）は本発明方法を実施する装置の斜視図、第１図ＣＢ
）は映出画像の説明図である。One embodiment of the present invention will be explained with reference to the drawings.
A) is a perspective view of an apparatus for carrying out the method of the present invention, FIG. 1 CB
) is an explanatory diagram of a projected image.
第１図（Ａ）において、タービン動翼疋おける翼１の前
縁ステライト部２の浸食部分４を検出するに、侵食形状
抽出するための光透過用光源５と、侵食寸法量を求める
ため基準線すなわちステライト境界部３を抽出する光反
射用光源６の、２種類の異なる光源を用いる。In FIG. 1(A), in order to detect the eroded portion 4 of the leading edge stellite portion 2 of the blade 1 in the turbine rotor blade, a light source 5 for transmitting light for extracting the eroded shape and a standard for determining the amount of eroded dimension are used. Two different types of light sources are used: the light source 6 for light reflection that extracts the line, that is, the stellite boundary portion 3.
光源５は翼１の裏面から投射し侵食部分４を検出する光
源であフ、良好な透過像を得るため翼１裏面に光拡散用
ガラス７を配置している。The light source 5 is a light source that is projected from the back surface of the blade 1 to detect the eroded portion 4. A light diffusing glass 7 is arranged on the back surface of the blade 1 in order to obtain a good transmitted image.
翼１の透過像はテレビカメラ８で撮影し、翼浸食部の形
状画像としてとらえる。更に侵食の寸法を明確化するた
め、その基準線となるステライト境界部乙に、翼１の表
面から光源６を投射し、反射してくるステライト境界部
６を同一テレビカメラ８で撮影する。A transmitted image of the blade 1 is photographed by a television camera 8 and captured as a shape image of the eroded portion of the blade. Furthermore, in order to clarify the dimensions of the erosion, a light source 6 is projected from the surface of the wing 1 onto the stellite boundary part B, which serves as the reference line, and the reflected stellite boundary part 6 is photographed with the same television camera 8.
２つの光源５，６から得る透過像と反射像とをテレビカ
メラ８で交互にとらえ、それら画像は画像処理装置９に
入力して合わせられるとともに、侵食の寸法を数値で表
わす処理演算を行い表示器１１に映出表示し、その映出
画像は第１図（Ｂ）に示すように画像１２上に侵食の寸
法数値１３を表示している。Transmitted images and reflected images obtained from the two light sources 5 and 6 are alternately captured by a television camera 8, and these images are input to an image processing device 9 where they are combined and processed to express the dimensions of the erosion numerically and displayed. The image is displayed on the container 11, and the projected image shows the numerical value 13 of the erosion dimension on the image 12, as shown in FIG. 1(B).
また画像処理装置９内だ前回定検時のデータを記憶させ
ておき、その寸法数値を同一画像１２上て表示し、両者
の比較寸法数値を直接示すこともできる。It is also possible to store the data from the previous regular inspection in the image processing device 9 and display the dimensional values on the same image 12 to directly show the comparative dimensional values of the two.
なお２個の電源５，６と画像処理装置９の作動は画像処
理制御器１０で制御される。Note that the operations of the two power supplies 5 and 6 and the image processing device 9 are controlled by an image processing controller 10.
要するに本発明によれば、タービン動翼知その裏面から
光拡散ガラスを介して光を当てて投影される翼侵食部形
状の透過画像と、上記タルビン動翼の表面から翼侵食部
寸法の基準線となるステライト境界部に光を当ててその
部分から反射される反射画像とをテレビカメラで別々に
撮影し、これら２画像を画像処理装置で合わせるととも
に翼侵食部寸法数値を演算し翼侵食部寸法数値の表示さ
れた画像を表示器に映出させることによフ、ステライト
境界部が明確に映出されるとともに侵食寸法が画像上に
数値表示され、かつこれら撮影及び画像映出が自動的に
高精度かつ容易に行われる翼侵食量自動検査方法を得る
から、本発明は産業上極めて有益なものである。In short, according to the present invention, a transmitted image of the shape of the blade eroded portion is projected by shining light from the back surface of the turbine rotor blade through the light diffusion glass, and a reference line of the dimension of the blade eroded portion from the surface of the turbine rotor blade. Shine light on the stellite boundary and take a picture of the reflected image from that part separately with a TV camera, combine these two images with an image processing device, calculate the numerical values of the dimensions of the blade erosion part, and calculate the dimensions of the blade erosion part. By projecting an image with numerical values displayed on the display, the stellite boundary is clearly displayed, the erosion dimension is displayed numerically on the image, and these shooting and image projections are automatically increased. INDUSTRIAL APPLICABILITY The present invention is extremely useful industrially because it provides an automatic blade erosion amount inspection method that is accurate and easy to perform.
第１図は本発明翼侵食ｌ自動検査方法の−実施例を示し
、同図（Ａ）は本発明方法を実施する装置の斜視図、同
図（Ｂ）は同１ｆｆｉ （Ａ）の表示器の映出画像の説
明図である。
第２図は従来の検査方法の説明図で、同図（Ａ）は検査
方法の要領を示す斜視図、同図（Ｂ）。
（Ｃ）はそれぞれ異なる定検時の撮影写真の正面図であ
る。
１・・・翼、２・・・ステライト部、３・・・ステライ
ト境界部、４・・・侵食部分、５・・・光透過用光源、
６・・・光反射用光源、７・・・光拡散用ガラス、８・
・・テレビカメラ、９・・・画像処理装置、１０・・・
画像処理制御器、１１・・・表示器、１２・・・画像、
１３・・・侵食寸法数値。
復代理人 弁理士 塚 本 正 文
箱１図
（，５）FIG. 1 shows an embodiment of the automatic blade erosion inspection method of the present invention, FIG. 1(A) is a perspective view of an apparatus for carrying out the method of the present invention, and FIG. FIG. 2 is an explanatory diagram of a projected image. FIG. 2 is an explanatory diagram of a conventional inspection method, where (A) is a perspective view showing the main points of the inspection method, and (B) is the same. (C) is a front view of photographs taken at different regular inspections. DESCRIPTION OF SYMBOLS 1... Wing, 2... Stellite part, 3... Stellite boundary part, 4... Eroded part, 5... Light source for light transmission,
6...Light source for light reflection, 7...Glass for light diffusion, 8.
...TV camera, 9...Image processing device, 10...
Image processing controller, 11...Display device, 12...Image,
13... Erosion dimension value. Sub-Agent Patent Attorney Masaru Tsukamoto Letter Box Figure 1 (,5)
Claims (1)
と、上記タービン動翼の表面から翼侵食部寸法の基準線
となるステライト境界部に光を当ててその部分から反射
される反射画像とをテレビカメラで別々に撮影し、これ
ら２画像を画像処理装置で合わせるとともに翼侵食部寸
法数値を演算し翼侵食部寸法数値の表示された画像を表
示器に映出させることを特徴とする翼侵食量自動検査方
法。[Claims] A transmission image of the shape of the blade eroded portion projected by shining light onto the turbine blade from the back surface thereof through a light diffusion glass, and a reference line of the blade eroded portion size from the surface of the turbine blade. Shine light on the stellite boundary and take a picture of the reflected image from that part separately with a television camera, combine these two images with an image processing device, calculate the dimensions of the wing erosion part, and calculate the dimensions of the wing erosion part. An automatic blade erosion amount inspection method characterized by projecting a displayed image on a display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27842486A JPS63132108A (en) | 1986-11-21 | 1986-11-21 | Automatic inspecting method for bucket corrosion quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27842486A JPS63132108A (en) | 1986-11-21 | 1986-11-21 | Automatic inspecting method for bucket corrosion quantity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63132108A true JPS63132108A (en) | 1988-06-04 |
Family
ID=17597148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27842486A Pending JPS63132108A (en) | 1986-11-21 | 1986-11-21 | Automatic inspecting method for bucket corrosion quantity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63132108A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0587546A (en) * | 1990-04-28 | 1993-04-06 | Seiwa Sangyo Kk | Method and device for inspecting appearance |
| JP2003302206A (en) * | 2002-03-28 | 2003-10-24 | General Electric Co <Ge> | Method for locating edge in three dimensions using side illumination |
| US8587660B2 (en) | 2010-07-30 | 2013-11-19 | General Electric Company | Image recording assemblies and coupling mechanisms for stator vane inspection |
| US8602722B2 (en) | 2010-02-26 | 2013-12-10 | General Electric Company | System and method for inspection of stator vanes |
| US11668773B2 (en) | 2019-03-22 | 2023-06-06 | Raytheon Technologies Corporation | Automated inspection for internal corrosion |
-
1986
- 1986-11-21 JP JP27842486A patent/JPS63132108A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0587546A (en) * | 1990-04-28 | 1993-04-06 | Seiwa Sangyo Kk | Method and device for inspecting appearance |
| JP2003302206A (en) * | 2002-03-28 | 2003-10-24 | General Electric Co <Ge> | Method for locating edge in three dimensions using side illumination |
| JP4515036B2 (en) * | 2002-03-28 | 2010-07-28 | ゼネラル・エレクトリック・カンパニイ | Method of determining the position of the three-dimensional edge by side lighting |
| US8602722B2 (en) | 2010-02-26 | 2013-12-10 | General Electric Company | System and method for inspection of stator vanes |
| US8587660B2 (en) | 2010-07-30 | 2013-11-19 | General Electric Company | Image recording assemblies and coupling mechanisms for stator vane inspection |
| US11668773B2 (en) | 2019-03-22 | 2023-06-06 | Raytheon Technologies Corporation | Automated inspection for internal corrosion |
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