WO2016059812A1 - 漏油検出装置と方法 - Google Patents
漏油検出装置と方法 Download PDFInfo
- Publication number
- WO2016059812A1 WO2016059812A1 PCT/JP2015/059542 JP2015059542W WO2016059812A1 WO 2016059812 A1 WO2016059812 A1 WO 2016059812A1 JP 2015059542 W JP2015059542 W JP 2015059542W WO 2016059812 A1 WO2016059812 A1 WO 2016059812A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- ultraviolet light
- light source
- oil leakage
- light
- Prior art date
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title abstract description 13
- 238000003384 imaging method Methods 0.000 claims abstract description 31
- 238000012545 processing Methods 0.000 claims description 13
- 238000012937 correction Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 101
- 238000010586 diagram Methods 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010696 ester oil Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/38—Investigating fluid-tightness of structures by using light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N21/6456—Spatial resolved fluorescence measurements; Imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N2021/6463—Optics
- G01N2021/6465—Angular discrimination
Definitions
- the present invention relates to an oil leakage detection method and apparatus for oil-filled equipment such as transformers, capacitors, GIS hydraulic actuators, and rectifiers.
- oil storage tanks and transformers have been concerned about oil leaks (leakage) due to deterioration or accidents. Since oil leakage can lead to environmental pollution and disasters, a technique for detecting a small amount of oil leakage at the initial stage of deterioration has been demanded.
- a technique for detecting a minute amount of oil leakage there is a technique for detecting fluorescence (self-luminous) emitted from the oil leakage when irradiated with ultraviolet light including the absorption wavelength of the oil leakage from the outside.
- black light is used as the external light source for ultraviolet light, but the light irradiated with black light may contain a visible light component having a wavelength close to that of ultraviolet light in addition to ultraviolet light.
- the strong reflected light (noise light) of the visible light component contained in the light source is also detected together with the fluorescence, and there is a concern that the detection may be hindered, and it is necessary to improve detection diagnosis accuracy by removing noise.
- Patent Document 1 a wavelength selective element that irradiates oil with pulsed laser light and uses a bandpass filter; There is a method of improving detection accuracy by observing only fluorescence with an image intensifier having a high-speed shutter function for detecting only fluorescence and an image doubling function.
- Patent Document 1 has problems such as concern that the structure of the detector is complicated and that it is necessary to replace the band-pass filter for each type of oil. Moreover, since it becomes a precision instrument, when it was always installed locally, it was necessary to put effort into the management of the instrument.
- an oil leakage detection device is arranged to illuminate an oil-filled device from a plurality of different incident angles, and performs oil on and off in turn at each incident angle.
- An ultraviolet light source including a wavelength to be excited, an imager that captures an oil-filled device irradiated with ultraviolet light from the ultraviolet light source during the lighting, and a recording unit that records each of the images captured by the imager , Comparing each of the images, determining that the part where the light emission position does not always change is an oil leakage part, and displaying each of the images in order to determine a part that may emit light and a part that may not emit light as a noise light part It has a display part.
- FIG. 10 is a schematic diagram illustrating a photographed image, which is a sixth embodiment of the oil leakage detection method and apparatus according to the present invention.
- FIG. 10 is a schematic diagram showing an image taken after a preset time interval according to a sixth embodiment of the oil leakage detection method and apparatus of the present invention. It is a flowchart explaining the oil leak detection operation
- FIG. 17 is a top view of FIG. 16.
- Embodiments relating to the oil leakage detection method and apparatus of the present invention will be described below with reference to FIGS. It should be noted that this embodiment described in this specification does not limit the present invention.
- an oil leakage detection method and apparatus will be described using an insulating oil (mineral oil, vegetable ester oil, etc.) commonly used in transformers as an example.
- the present invention is widely applicable and is not limited to a transformer.
- the present invention can be applied to detection of oil leakage in a tank or a pipeline for storing fuel oil.
- FIG. 1 is a diagram showing a first embodiment specifically showing an oil leakage detection method and apparatus according to the present invention.
- the oil leakage detection device 100 includes a first ultraviolet light source 1a, a second ultraviolet light source 1b, a fixedly arranged image pickup device 2, a first ultraviolet light source 1a, a second ultraviolet light source 1b, and an image pickup device 2.
- a control unit 3 that controls the operation, a recording unit 4 that records the captured image, and a display unit 5 that displays the image stored in the recording unit 4 are provided.
- an ultraviolet light source including an absorption wavelength of oil is used as the first ultraviolet light source 1a and the second ultraviolet light source 1b.
- black light having an emission peak of 365 nm ⁇ 50 nm it is particularly preferable to use black light having an emission peak of 365 nm ⁇ 50 nm.
- the image pickup device 2 may be a general-purpose device that can output image data to the outside, such as a digital camera that captures visible light. It is desirable to arrange the first ultraviolet light source 1a and the second ultraviolet light source 1b with the image pickup device 2 interposed therebetween.
- the oil leakage 11 emits fluorescence 9 when irradiated with the ultraviolet light component 7a or 7b from the first ultraviolet light source 1a and the second ultraviolet light source 1b. Since the fluorescence 9 is visible light, it can be photographed with the imaging device 2 for visible light.
- black light which is an ultraviolet light source, contains a visible light component in addition to an ultraviolet light component, so that the visible light is reflected by the surface of the object to be imaged 13.
- the reflected light is divided into diffuse reflected light and specular reflected light. Since the reflected light is visible light, the image is captured by the visible light imaging device 2.
- the intensity of the captured visible light is generally lower than the intensity of the fluorescence 9, so that the emission of the fluorescence 9 appears remarkably and cannot interfere with the detection of the leaked oil 11. .
- the intensity of the reflected light that has been photographed may be approximately the same as the intensity of the fluorescence 9 depending on the position of the imaging device 2.
- the specular reflection light 10a of the visible light component 8a of the light irradiated by the first ultraviolet light source 1a is applied to the surface portion 12a of the object to be imaged 13. Is the maximum when the incident angle ⁇ a and the reflection angle ⁇ a ′ are equal. That is, when the imaging device 2 is positioned in the incident direction of the specular reflected light 10a, high-intensity visible light is captured from the surface portion 12a of the imaging target 13. The intensity is comparable to the intensity of the fluorescence 9, and it becomes difficult to detect oil leakage.
- the specular reflection light of the visible light component of the ultraviolet light source reflected on the image pickup device 2 will be described as noise light.
- the specular reflection light 10a is described as noise light 10a.
- the surface portion 12a of the imaging target 13 is a position where the noise light 10a is emitted.
- the fluorescence 9 is emitted by the ultraviolet light component 7b of the irradiation light and the visible light component 8b causes the imaging target 13 to be irradiated.
- Noise light 10b is emitted from the surface portion 12b.
- the incident angle ⁇ b and the reflection angle ⁇ b ′ are in the same relationship.
- FIG. 1 only the ultraviolet light components 7a and 7b irradiated from the ultraviolet light sources 1a and 1b and the visible light components 8a and 8b emitting specular reflection are shown as irradiation light for easy understanding.
- the ultraviolet light sources 1a and 1b irradiate the entire area of the imaging target 13.
- the fluorescent light 9 generated from the ultraviolet light components 7a and 7b and the visible light components 8a and 8b and the noise light 10a and 10b due to specular reflection it becomes diffusely reflected light and forms a high-intensity luminescent image on the image pickup device 2. is not.
- the imaging device 2 since the imaging device 2 is fixed and the fluorescence 9 is self-luminous, the arrangement position of the first ultraviolet light source 1 a and the second ultraviolet light source 1 b and the irradiation angle to the imaging target 13 are determined. Regardless, the emission position of the fluorescence 9 by the oil leak 11 on the image photographed by the image pickup device 2 does not change.
- the light is always emitted at the same position on the image. Can be detected and identified as the position of the leaked oil 11 and the position where the light emission is observed at a different position in each image (OR condition) as the noise light generation position.
- the imaging target 13 is irradiated with the first ultraviolet light source 1a.
- the oil leakage 11 is irradiated with the ultraviolet light component 7a of the irradiation light
- the oil leakage 11 emits fluorescence 9 and is reflected in the image pickup device 2 as shown in FIGS.
- the noise light 10 a from the surface portion 12 a on the imaging target 13 is also reflected in the imaging device 2.
- the image A taken by the image pickup device 2 is stored in the recording unit.
- the sites where the intensity of visible light in the image A is strong are the fluorescence 9 site (the site of the oil leak 11) and the surface site 12a.
- the object to be imaged 13 is irradiated with the second ultraviolet light source 1b.
- the oil leakage 11 is irradiated with the ultraviolet light component 7b of the irradiation light
- the oil leakage 11 emits fluorescence 9 and is reflected in the image pickup device 2 as shown in FIGS.
- the noise light 10 b from the surface portion 12 b on the imaged object 13 is also reflected in the image pickup device 2.
- the image B taken by the image pickup device 2 is stored in the recording unit.
- the sites where the intensity of visible light in the image B is strong are the fluorescence 9 site (the site of the oil leak 11) and the surface site 12b.
- the images A and B photographed in STEP 2 and STEP 5 are simultaneously displayed on the display unit 5. Since light emission appears at the same place in any image in the portion of the oil leak 11 where the fluorescence 9 occurs, it is determined that the oil leaks (AND condition). On the other hand, since the surface part 12a and the surface part 12b emit light at different positions for each image, the operator displays the state of light emission on the display and visually confirms it, and determines that it is a noise light generation part (OR condition). In this way, the oil leak 11 can be easily detected and identified regardless of the skill of the operator.
- FIG. 5 is a diagram showing a second embodiment of the oil leakage detection method and apparatus according to the present invention.
- the image processing unit 6 calls the image recorded by the recording unit 4 and automatically determines the oil leakage 11. The determined result is displayed on the display unit 5.
- FIG. 6 is a flowchart when the oil leak 11 is automatically detected by the oil leak detection method and apparatus according to the second embodiment. Note that the operations from STEP 1 to STEP 6 are the same as those in the first embodiment.
- the photographed image A is called, the R, G, and B values of each pixel are extracted, and the luminance Y n is calculated.
- Y n 0.299R + 0.587G + 0.114B (1) and so on.
- the brightness Y 1 of the image A is compared with a brightness threshold value determined to be the oil leakage 11 preset in the image processing unit 6, and a part equal to or higher than the threshold value is recorded.
- the luminance of each pixel of the image B is calculated using the formula (1).
- the threshold value for determining the oil leakage 11 set in advance in the image processing unit 6 is compared, and a part equal to or higher than the threshold value is recorded.
- luminance with respect to the image A and the image B is the 1st ultraviolet light source 1a with respect to the state without the oil leak 11 at the time of the new installation of a transformer, and the state which adhered oil artificially.
- the second ultraviolet light source 1b are measured and evaluated in advance and set in the image processing unit 6 as back data.
- the parts of the image A and the image B that are equal to or higher than the threshold of brightness are compared.
- the oil leakage 11 is determined if the luminance Y 1 and the luminance Y 2 are equal to or higher than the respective luminance threshold values in both images.
- luminance differs for every image is determined as a part from which noise light 10a and 10b are emitted.
- FIG. 7 is a diagram showing a third embodiment of the oil leakage detection method and apparatus according to the present invention. Since the control unit 3, the recording unit 4, and the display unit 5 are the same as those in the first and second embodiments, and the image processing unit 6 is the same as that in the second embodiment, the description thereof is omitted.
- the first ultraviolet light source 1a and the second ultraviolet light source 1b are arranged to detect and identify the portions that emit the fluorescence 9 and the noise lights 10a and 10b. Only the ultraviolet light source 1a is arranged, and the first ultraviolet light source 1a is moved by the light source moving means arranged around the transformer to move to the arrangement position of the second ultraviolet light source 1b described in the first and second embodiments.
- the other parts are the same as those in Examples 1 and 2.
- the light source moving means is preferably a rail or a robot arm, but is not limited thereto.
- FIG. 8 is a flowchart when oil leakage is automatically detected by the oil leakage detection method and apparatus according to the third embodiment.
- FIG. 8 additional items in the embodiment will be described.
- the portions other than STEP 4 in FIG. 8 are the same as those in the second embodiment.
- the first ultraviolet light source 1a is moved by the method described above.
- FIG. 9 is a diagram showing a fourth embodiment of the oil leakage detection method and apparatus according to the present invention. Since the control unit 3, the recording unit 4, and the display unit 5 are the same as those in the first and second embodiments, and the image processing unit 6 is the same as that in the second embodiment, the description thereof is omitted.
- the same components as those in the above embodiment are denoted by the same reference numerals, description thereof is omitted, and only different portions will be described.
- the ultraviolet light source 1c is disposed, and the image pickup devices 2a and 2b are disposed.
- the noise light 10c due to the visible light component 8c of the irradiation light of the ultraviolet light source 1c is reflected on the image pickup device 2a but is not reflected on the image pickup device 2b with respect to the surface portion 12c of the image pickup object 13.
- the noise light 10c due to the visible light component 8c is not reflected on the image pickup device 2a but reflected on the image pickup device 2b with respect to the surface portion 12d.
- FIG. 10 is a flowchart when the oil leakage 11 is automatically detected by the detection method and apparatus according to the fourth embodiment.
- the imaging target 13 is irradiated with the ultraviolet light source 1c.
- the image A 1 photographed by the imaging device 2 a is stored in the recording unit 4.
- the portions showing high-intensity visible light are the portion of the oil leak 11 and the surface portion 12 c.
- the image B 1 captured by the image pickup device 2 b is stored in the recording unit 4.
- the portions showing high-intensity visible light are the portion of the oil leak 11 and the surface portion 12 d.
- the images A 1 and B 1 are read from the recording unit 4 and the image processing unit 6 performs image processing. Since the object to be imaged 13 is taken from a location where the two image pickup devices 2a and 2b are different, the position of the image to be imaged 13 is corrected so that the images A 1 and B 1 have the same position.
- a correction coefficient by using a plurality of pre-characterized spots of the imaging target 13 as marks so that the image position can be easily corrected. Further, if the image pickup device 2a and the image pickup device 2b are arranged at the same distance from the surface of the object to be imaged 13 and parallel to the surface of the object to be imaged 13, the position can be corrected more easily. That is, if arranged in this way, a plurality of corrections such as enlargement and reduction of the image become unnecessary.
- FIG. 11 is a diagram showing a fifth embodiment of the oil leakage detection method and apparatus according to the present invention. Since the control unit 3, the recording unit 4, and the display unit 5 are the same as those in the first and second embodiments, and the image processing unit 6 is the same as that in the second embodiment, the description thereof is omitted.
- the same constituent elements as those in the fourth embodiment are denoted by the same reference numerals, description thereof is omitted, and only different portions will be described.
- the image pickup devices 2a and 2b are installed, but in this embodiment, only the image pickup device 2a is installed.
- the image pickup device 2a is moved by the moving means of the image pickup device 2a arranged around the transformer and moved to the installation location of the image pickup device 2b of the fourth embodiment.
- a rail or a robot arm is suitable as in the third embodiment, but is not limited thereto.
- FIG. 12 is a flowchart when the oil leak 11 is automatically detected by the oil leak detection method and apparatus according to the fifth embodiment. Since portions other than STEP 3 are the same as those in the fourth embodiment, description thereof is omitted.
- STEP 3 after the image A 1 is completely captured in STEP 2, the image pickup device 2 a is moved by the method described above.
- the object to be imaged 13 is photographed at a preset time interval using the fixed first ultraviolet light source 1a and the image pickup device 2.
- This is a technique for detecting a change in the shape of the leaked oil 11 and identifying a site that emits the leaked oil 11 and the noise light 10a with respect to the image.
- 13 and 14 are schematic views showing two images taken at a preset time interval.
- FIG. 13 the parts where high-intensity visible light is imaged with respect to the imaging target 13 are a part 12e (referred to as an oil leakage part) and a part 12f (referred to as a part where noise light occurs).
- the shape of the leaked oil 11 changes with time due to the influence of gravity.
- FIG. 14 is a schematic diagram of an image of the imaging target 13 taken through a preset time interval. Since the oil leakage 11 flows downward along the side surface of the device, the shape changes as shown by a broken line.
- the part 12f is a part where the noise light 10a is generated, the shape does not change regardless of the change of time. By comparing these images, the part 12f where the light emission shape does not change can be detected and identified as the part emitting the noise light 10a, and the part where the light emission shape changes can be detected and identified as the part of the oil leak 11.
- FIG. 15 is a flowchart when oil leakage is automatically detected by the detection method and apparatus according to the fifth embodiment.
- the imaging target 13 is irradiated with the first ultraviolet light source 1a.
- the image A 2 captured by the image pickup device 2 is stored in the recording unit 4.
- the portions where the high-intensity visible light is imaged on the surface of the imaging target 13 are the surface portion 12 e and the surface portion 12 f of the oil leak 11.
- the image pickup device 2 takes a picture again at a preset time interval, and the obtained image B 2 is stored in the recording unit 4.
- the portions where high-intensity visible light is imaged are the surface portion 12 e and the surface portion 12 f of the oil leak 11.
- STEP 4 the first ultraviolet light source 1a is turned off. Since STEP5 and STEP6 are the same as those of the second embodiment, description thereof is omitted.
- the portions of the images A 2 and B 2 that are equal to or higher than the luminance threshold value are compared.
- a 2 when the number of parts equal to or greater than the threshold value of B 2 increases and the shape of the part changes, it is determined as oil leak 11. Moreover, when there is no change, it determines with the site
- This embodiment has a bushing 14, a tank 15, a radiator 16, an upper pipe 17 a and a lower pipe 17 b that connect the tank 15 and the radiator 16, and an upper pipe connection 18 a and a lower pipe connection 18 b, as shown in FIG. 16.
- An oil-filled transformer which is generally used for electric power equipment, will be described as an example, and a method and apparatus for detecting the oil leakage 11 in the connection portion 18b between the radiator 15 and the lower pipe will be described.
- the oil-filled transformer has a structure in which the bushing 14, the tank 15, the radiator 16, the upper pipe 17a and the lower pipe 17b are filled with insulating oil.
- the upper and lower pipe connections 18a and 18b are generally packed. It is fixed with bolts and nuts.
- FIG. 16 is a side view of the first ultraviolet light source 1a, the second ultraviolet light source 1b, and the image pickup device 2 arranged around the transformer.
- FIG. 17 is a top view of FIG.
- the first ultraviolet light source 1 a and the image pickup device 2 are arranged at a location away from the side surface of the radiator 16. Further, the second ultraviolet light source 1 b is disposed at a location away from the front of the radiator 16.
- the first ultraviolet light source 1a, the second ultraviolet light source 1b, and the image pickup device 2 are lower than the bottom surface height of the radiator 16, and at a position and height that can irradiate the lower portion of the radiator 16 and the bottom portion of the connecting portion 18b of the lower pipe. Install.
- the connection portion between the radiator 16 and the lower pipe irradiated with the first ultraviolet light source 1a and the second ultraviolet light source 1b It is possible to detect the oil leak 11 with respect to the part 18b.
- the details of the method and apparatus for detecting the leaked oil 11 are the same as the method described in the second embodiment, and a description thereof will be omitted. Further, as a result of intensive studies by the inventor, it was possible to improve the oil leakage detection sensitivity when the illuminance in the surrounding environment of the oil leakage detection target device is 50 lx or less. Therefore, detection sensitivity can be enhanced by detecting oil leakage after the shadow or sunset of the transformer, especially at night.
- the introduction cost of the detection device can be reduced.
- the power supply of the said detection apparatus not only this but a battery etc. may be utilized.
- Visible light component 8c of light Visible light component 9 of irradiation light by ultraviolet light source 1c: Fluorescence 10a: Specular reflection light (noise light) of visible light component of light irradiated by first ultraviolet light source 1a 10b ...
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Power Engineering (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Examining Or Testing Airtightness (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
Description
などがある。ここで、nはSTEP7ではn=1、後述するSTEP8ではn=2として区別する。
1a・・・第一の紫外光源
1b・・・第二の紫外光源
1c・・・紫外光源
2・・・撮像機
2a・・・撮像機
2b・・・撮像機
3・・・制御部
4・・・記録部
5・・・表示部
6・・・画像処理部
7a・・・漏油に照射される第一の紫外光源1aの照射光の紫外光成分
7b・・・漏油に照射される第二の紫外光源1bの照射光の紫外光成分
8a・・・第一の紫外光源1aによる照射光の可視光成分
8b・・・第二の紫外光源1bによる照射光の可視光成分
8c・・・紫外光源1cによる照射光の可視光成分
9・・・蛍光
10a・・・第一の紫外光源1aによる照射光の可視光成分の鏡面反射光(ノイズ光)
10b・・・第二の紫外光源1bによる照射光の可視光成分の鏡面反射光(ノイズ光)
10c・・・紫外光源1cによる照射光の可視光成分の鏡面反射光(ノイズ光)
11・・・漏油
12a・・・被撮像物13の表面部位
12b・・・被撮像物13の表面部位
12c・・・被撮像物13の表面部位
12d・・・被撮像物13の表面部位
12e・・・被撮像物13の表面部位
12f・・・被撮像物13の表面部位
13・・・被撮像物
14・・・変圧器ブッシング
15・・・変圧器タンク
16・・・変圧器ラジエータ
17a・・・変圧器タンクとラジエータを繋ぐ上部配管
17b・・・変圧器タンクとラジエータを繋ぐ下部配管
18a・・・上部配管の接続部
18b・・・下部配管の接続部
Claims (9)
- 複数の異なる入射角度から油入機器を照らすように配置され、それぞれの前記入射角度で順番に点灯及び消灯を行う、油を励起する波長を含む紫外光源と、
前記点灯の際に前記紫外光源からの紫外光により照射された油入機器を撮影する撮像機と、
前記撮像機により撮影された画像それぞれを記録する記録部と、
前記画像それぞれを比較し、常に発光する位置が変わらない部位を漏油部位と判定し、発光する場合と発光しない場合がある部位をノイズ光部位と判定するために、前記画像それぞれを表示する表示部を有する漏油検出装置。 - 請求項1において、
前記油を励起する波長を含む紫外光源は、発光ピークが265nm±50nm、275nm±50nm、345nm±50nm、365nm±50nmのいずれかであることを特徴とする漏油検出装置。 - 請求項1において、
さらに、前記漏油部位と前記ノイズ光部位の光量を定量的に判定するための画像処理部を有することを特徴とする漏油検出方装置。 - 請求項3において、
前記画像処理部の前記光量を定量的に判定するために、輝度による閾値の判定機能を有することを特徴とする漏油検出装置。 - 請求項4において、
前記判定機能は予め漏油のない状態での前記光量をバックデータとして有することを特徴とする漏油検出装置。 - 請求項1において、
前記紫外光源は移動手段を有することを特徴とする漏油検出装置。 - 請求項1において、
さらに、前記画像それぞれを位置補正する位置補正手段を有することを特徴とする漏油検出装置。 - 複数の異なる入射角度から油入機器を照らすように、油を励起する波長を含む紫外光源を配置し、
前記紫外光源を前記それぞれの入射角度で順番に点灯及び消灯し、
前記点灯した際に前記紫外光源からの紫外光により照射された油入機器をそれぞれ撮影し、
前記撮影した画像それぞれを比較し、常に発光する位置が変わらない部位を漏油部位と判定し、発光する場合と発光しない場合がある部位をノイズ光部位と判定する漏油検出方法。 - 請求項8において、
前記油を励起する波長を含む紫外光源は、発光ピークが265nm±50nm、275nm±50nm、345nm±50nm、365nm±50nmのいずれかであることを特徴とする漏油検出方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020177006344A KR101952524B1 (ko) | 2014-10-17 | 2015-03-27 | 누유 검출 장치와 방법 |
US15/519,301 US10113933B2 (en) | 2014-10-17 | 2015-03-27 | Leakage oil detector system and method |
MX2017004962A MX2017004962A (es) | 2014-10-17 | 2015-03-27 | Sistema y metodo detector de fugas de aceite. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014-212189 | 2014-10-17 | ||
JP2014212189A JP6411856B2 (ja) | 2014-10-17 | 2014-10-17 | 漏油検出装置と方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016059812A1 true WO2016059812A1 (ja) | 2016-04-21 |
Family
ID=55746366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/059542 WO2016059812A1 (ja) | 2014-10-17 | 2015-03-27 | 漏油検出装置と方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US10113933B2 (ja) |
JP (1) | JP6411856B2 (ja) |
KR (1) | KR101952524B1 (ja) |
MX (1) | MX2017004962A (ja) |
TW (1) | TWI550264B (ja) |
WO (1) | WO2016059812A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114674503A (zh) * | 2022-05-30 | 2022-06-28 | 中海石油(中国)有限公司 | 一种水下沉箱漏油检测装置 |
US11494888B2 (en) * | 2018-01-18 | 2022-11-08 | Hitachi, Ltd. | Work terminal, oil leakage detection apparatus, and oil leakage detection method |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6498552B2 (ja) * | 2015-07-15 | 2019-04-10 | 株式会社日立製作所 | 漏油検出システム |
JP6611843B2 (ja) * | 2018-03-07 | 2019-11-27 | 東芝エレベータ株式会社 | 油圧エレベータ内の油漏れ検出システム |
JP7096780B2 (ja) * | 2019-02-14 | 2022-07-06 | 株式会社日立製作所 | 漏油検出装置及び漏油検出方法 |
JP7245703B2 (ja) * | 2019-03-29 | 2023-03-24 | 一般財団法人電力中央研究所 | Pcbを含む油の検出方法、及びpcbを含む油の除去方法 |
US11685226B2 (en) * | 2019-07-08 | 2023-06-27 | Basden Francis | Automobile air conditioning unit leak detection device |
US20220291072A1 (en) * | 2021-03-10 | 2022-09-15 | Dell Products, Lp | Optical liquid coolant leak detector |
CN113514193B (zh) * | 2021-07-13 | 2022-12-02 | 江铃汽车股份有限公司 | 基于图像识别的汽车碰撞燃油泄漏检测方法 |
RU2769597C1 (ru) * | 2021-09-09 | 2022-04-04 | Вячеслав Владимирович Антюфеев | Установка для обнаружения утечек технологических жидкостей |
RU2770070C1 (ru) * | 2021-09-09 | 2022-04-14 | Вячеслав Владимирович Антюфеев | Способ обнаружения утечек технологических жидкостей |
KR102427355B1 (ko) * | 2022-01-13 | 2022-07-29 | (주)엠씨마스터스 | 오일 누출 자동 검지 장치 |
GB2619772B (en) * | 2022-06-17 | 2024-06-19 | Foster & Freeman Ltd | Apparatus and methods for identifying compounds of interest |
CN117686153B (zh) * | 2024-02-04 | 2024-04-09 | 江苏中创机械装备制造有限公司 | 一种轨道车辆转向架检验系统 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07503317A (ja) * | 1991-12-23 | 1995-04-06 | エレクトリック パワー リサーチ インスチテュート インコーポレイテッド | Pcb又はpcb鉱物油のこぼれ輪郭測定のためのビデオ蛍光モニタ |
JPH08128916A (ja) * | 1994-10-31 | 1996-05-21 | Mitsubishi Electric Corp | 油漏れ検出装置 |
JP5351081B2 (ja) * | 2010-03-09 | 2013-11-27 | 株式会社四国総合研究所 | 漏油遠隔監視装置および方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4897551A (en) * | 1988-04-11 | 1990-01-30 | Spectral Sciences, Inc. | Leak detector |
JPH09304281A (ja) | 1996-05-09 | 1997-11-28 | Tokyo Electric Power Co Inc:The | 油検知装置 |
KR100264458B1 (ko) * | 1997-09-18 | 2001-03-02 | 홍선표 | 지하매설탱크의 누유측정 장치 |
KR100275825B1 (ko) * | 1998-09-02 | 2001-03-02 | 이계철 | 관로의 누수위치 검사장치 |
JP2004361329A (ja) * | 2003-06-06 | 2004-12-24 | Ushio Inc | パターン検査方法および装置 |
CN2629019Y (zh) * | 2003-07-18 | 2004-07-28 | 上海亿邦工贸有限公司 | 用于荧光示踪检漏的紫外检漏灯 |
US20050076706A1 (en) * | 2003-10-08 | 2005-04-14 | The Boeing Company | Apparatus and method for use in detecting a seal and paint failure |
CN101387568A (zh) * | 2007-09-11 | 2009-03-18 | 上海电缆研究所 | 六氟化硫泄漏点的定位方法及其定位系统 |
NO329675B1 (no) * | 2009-03-12 | 2010-11-29 | Integrated Optoelectronics As | Fremgangsmate og system for maling/detektering av kjemikaliesol |
US8796627B2 (en) * | 2010-12-07 | 2014-08-05 | Techwell Consulting Llc | Apparatus and method for detecting the presence of water on a remote surface |
DK2866047T3 (da) * | 2013-10-23 | 2021-03-29 | Ladar Ltd | Detekteringssystem til detektering af en genstand på en vandoverflade |
US9322716B2 (en) * | 2014-01-07 | 2016-04-26 | Panasonic Intellectual Property Corporation Of America | Component measuring apparatus and moving body |
TWM479415U (zh) * | 2014-01-15 | 2014-06-01 | meng-da Guo | 螢光自動光學檢查機 |
US9898830B2 (en) * | 2015-03-17 | 2018-02-20 | Hitachi, Ltd. | Oil leakage detector and oil leakage detection method |
-
2014
- 2014-10-17 JP JP2014212189A patent/JP6411856B2/ja active Active
-
2015
- 2015-03-26 TW TW104109760A patent/TWI550264B/zh not_active IP Right Cessation
- 2015-03-27 KR KR1020177006344A patent/KR101952524B1/ko active IP Right Grant
- 2015-03-27 US US15/519,301 patent/US10113933B2/en active Active
- 2015-03-27 WO PCT/JP2015/059542 patent/WO2016059812A1/ja active Application Filing
- 2015-03-27 MX MX2017004962A patent/MX2017004962A/es unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07503317A (ja) * | 1991-12-23 | 1995-04-06 | エレクトリック パワー リサーチ インスチテュート インコーポレイテッド | Pcb又はpcb鉱物油のこぼれ輪郭測定のためのビデオ蛍光モニタ |
JPH08128916A (ja) * | 1994-10-31 | 1996-05-21 | Mitsubishi Electric Corp | 油漏れ検出装置 |
JP5351081B2 (ja) * | 2010-03-09 | 2013-11-27 | 株式会社四国総合研究所 | 漏油遠隔監視装置および方法 |
Non-Patent Citations (1)
Title |
---|
MASAHIKO KUROKI ET AL.: "A Technique to Visualize Tranparent Oil Using Pulsed Fluorescence Method", IEEJ TRANSACTIONS ON SENSORS AND MICROMACHINES, vol. 118, no. 10, October 1998 (1998-10-01), pages 449 - 454 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11494888B2 (en) * | 2018-01-18 | 2022-11-08 | Hitachi, Ltd. | Work terminal, oil leakage detection apparatus, and oil leakage detection method |
CN114674503A (zh) * | 2022-05-30 | 2022-06-28 | 中海石油(中国)有限公司 | 一种水下沉箱漏油检测装置 |
Also Published As
Publication number | Publication date |
---|---|
KR101952524B1 (ko) | 2019-02-26 |
MX2017004962A (es) | 2017-06-20 |
KR20170039737A (ko) | 2017-04-11 |
TW201616112A (zh) | 2016-05-01 |
JP6411856B2 (ja) | 2018-10-24 |
JP2016082075A (ja) | 2016-05-16 |
US20170234762A1 (en) | 2017-08-17 |
TWI550264B (zh) | 2016-09-21 |
US10113933B2 (en) | 2018-10-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6411856B2 (ja) | 漏油検出装置と方法 | |
JP6944014B2 (ja) | 油入機器の漏油検出装置、油入機器の漏油検出方法および油入機器の漏油検出装置の画像処理部 | |
JP5077872B2 (ja) | 太陽電池のフォトルミネセンスによる欠陥検査装置及び方法 | |
US10755442B2 (en) | Oil leakage detector and oil leakage detection method and image processing unit | |
KR101949257B1 (ko) | 디스플레이 모듈 검사장치 및 검사방법 | |
JP5557368B2 (ja) | 半導体検査装置及び半導体検査方法 | |
JP2011185757A (ja) | 漏油遠隔監視装置および方法 | |
WO2013175703A1 (ja) | 表示装置の検査方法、および表示装置の検査装置 | |
WO2019176467A1 (ja) | 集光型太陽光発電装置の検査システム及び受光部の検査方法 | |
JP5589888B2 (ja) | 表面検査装置の評価装置及び表面検査装置の評価方法 | |
JP6775332B2 (ja) | 検査装置および生産管理方法 | |
JP2015158433A (ja) | 漏油確認方法および漏油確認用スコープ | |
JP6807259B2 (ja) | 変圧器の絶縁油劣化診断システム及び方法 | |
JP5566516B2 (ja) | 軌道変位測定装置 | |
US11994448B2 (en) | Leakage oil detection device and leakage oil detection method | |
KR101351000B1 (ko) | 복수 개의 검사 모드를 가지는 인라인 카메라 검사 장치 | |
KR101351004B1 (ko) | 상하 이동이 가능한 결함 검출용 카메라 어레이가 구비된 이송장치 | |
JP2009075044A (ja) | 有機elパネル基板の導電性ポリマー層の膜厚不良検査装置及びそれを用いた膜厚不良検査方法 | |
CN110987939A (zh) | 检测方法及检测装置 | |
JP2010014430A (ja) | 蛍光体検査装置 | |
KR101446757B1 (ko) | 디스플레이 패널 검사장치 | |
JP6030833B2 (ja) | X線検査装置 | |
CN104101482A (zh) | 发光模块检测装置以及发光模块检测方法 | |
JP2008232789A (ja) | 表示体の欠陥検査装置および欠陥検査方法 | |
KR20180052155A (ko) | 표시 장치의 검사 시스템 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15851102 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20177006344 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15519301 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2017/004962 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 15851102 Country of ref document: EP Kind code of ref document: A1 |