KR20090091971A - A track type inspection apparatus using gamma ray isotope - Google Patents
A track type inspection apparatus using gamma ray isotopeInfo
- Publication number
- KR20090091971A KR20090091971A KR1020080017218A KR20080017218A KR20090091971A KR 20090091971 A KR20090091971 A KR 20090091971A KR 1020080017218 A KR1020080017218 A KR 1020080017218A KR 20080017218 A KR20080017218 A KR 20080017218A KR 20090091971 A KR20090091971 A KR 20090091971A
- Authority
- KR
- South Korea
- Prior art keywords
- pipe
- collimator
- linear sensor
- type inspection
- track
- Prior art date
Links
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/095—Gamma-ray resonance absorption, e.g. using the Mössbauer effect
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1013—Different kinds of radiation or particles electromagnetic radiation gamma
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/20—Sources of radiation
- G01N2223/202—Sources of radiation isotopes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/30—Accessories, mechanical or electrical features
- G01N2223/33—Accessories, mechanical or electrical features scanning, i.e. relative motion for measurement of successive object-parts
- G01N2223/3303—Accessories, mechanical or electrical features scanning, i.e. relative motion for measurement of successive object-parts object fixed; source and detector move
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/628—Specific applications or type of materials tubes, pipes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/629—Specific applications or type of materials welds, bonds, sealing compounds
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The present invention relates to a track type inspection apparatus using gamma ray isotopes, and more particularly, to a track type inspection apparatus capable of evaluating defect states of various pipes using isotopes of gamma rays.
Track type inspection apparatus using a gamma ray isotope according to the present invention, the guide tube 10 for guiding the source 70 of the radiation, and conveyed along the circumference (track) of the pipe 1 to one side of the pipe (1) A collimator 20 provided to be capable of shielding dose in a radiation direction other than a predetermined irradiation direction of the source 70 provided from the guide tube 10, and a pipe 1 opposite to the position of the collimator 20. A scan linear sensor 30 which is provided to be transportable along the circumference of the pipe 1 on the other side of the pipe 1 and scans the pipe 1 by using radiation irradiated from the collimator 20, and the collimator 20 and the scan The motor 40 for transferring the linear sensor 30 along the circumference of the pipe 1 and the image data of the pipe 1 scanned by the scan linear sensor 30 are analyzed and evaluated, and the motor 40 Including a computer 50 to control the driving of It is sex.
Description
The present invention relates to a track type inspection apparatus using gamma ray isotopes, and more particularly, to a track type inspection apparatus capable of evaluating defect states of various pipes using isotopes of gamma rays.
Digital radiography (DR) absorbs irradiated X-ray energy to generate electrical signals as a result of physical reactions, and reads them together with location information to form a complete radiographic image. To play a role.
The DR technology is rapidly developing with the development of semiconductor technology over the last decade, and has been replacing film radiography (FR) in the medical / industrial field.
The DR inspection system has the advantage of increasing the radiographic efficiency from two viewpoints than the radiographic method using a conventional film.
First, the DR inspection system can inspect faster than the conventional method, and immediately determine whether the subject is defective after the inspection, and secondly, the obtained diagnostic image can increase process efficiency after the inspection.
The DR inspection system can be broadly divided into a radiation detection sensor means, an image signal processing means, a display means, and the like, and there is a need to configure an optimized system for each test requirement.
For example, domestic KEPIC and International Standards (ASME) provide radiography for structural steel, piping and pressure vessels.
In order to apply the DR technique among the recommended radiography techniques on the welded portion of the pipe or tube, flat-type shots should be taken for pipes of small diameter and track-type shots should be taken for pipes of large diameter. You can take a picture that matches the.
Therefore, in order to satisfy these regulations, the necessity of developing a track type inspection apparatus applicable to various field conditions was required.
The present invention has been made by the above-described development necessity, by using a gamma ray isotope to stably analyze the image data of the pipe scanned by the scan linear sensor to determine the gamma ray isotope that can evaluate the defect status of various pipes It is an object of the present invention to provide a track type inspection apparatus.
Track type inspection apparatus using a gamma ray isotope according to the present invention for achieving the above object is provided with a guide tube for guiding the source of radiation, and to be transported along the circumference of the pipe on one side of the pipe from the guide tube A collimator for shielding a dose in a radiation direction other than a predetermined irradiation direction of a provided source, a scan linear sensor provided to be transportable along a circumference of a pipe on the other side of the pipe opposite to the collimator, and scanning the pipe; And a motor for transferring the scan linear sensor along the circumference of the pipe, and a computer for analyzing and evaluating image data of the pipe photographed from the scan linear sensor and controlling the driving of the motor.
According to the present invention as described above, by using the isotope of the gamma rays (Se-75, Cs-137, Ir-192, Co-60) to analyze the image data of the pipe scanned by the scan linear sensor weld site As such, it is possible to evaluate a defect state of a pipe in which a defect is expected.
That is, although the track photographing is not possible in the prior art, the present invention can freely use various isotopes to stably analyze and evaluate pipes based on high-quality scan image data.
In addition, since the shooting time is shortened from at least 1/10 to as much as 1/100 as compared to the conventional film, a significant effect is expected to reduce radiation exposure of the inspector.
1 is a view showing the overall configuration of a track-type inspection apparatus according to the present invention.
<Description of Symbols for Major Parts of Drawings>
1: piping 10: guide tube
20: collimator 30: scan linear sensor
40: motor 50: computer
60: auxiliary connector 62: auxiliary roller
64: Linkage 70: Sailor
Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.
1 is a view showing the overall configuration of a track-type inspection apparatus according to the present invention.
Referring to Figure 1, the track-type inspection apparatus according to the present invention is provided with a guide tube 10 for guiding the source 70 of the radiation, and to be transported along the circumference of the pipe (1) on one side of the pipe (1) Pipes are provided on the other side of the collimator 20 for shielding the dose in the radiation direction other than the predetermined irradiation direction of the source 70 provided from the guide tube 10 and the pipe 1 opposite to the position of the collimator 20. 1) is provided to be transportable along the circumference of the scan linear sensor (scan linear sensor) (30) to scan the pipe (1), the collimator 20 and the scan linear sensor (30) along the circumference of the pipe It comprises a motor 40 for transferring and a computer 50 for analyzing and evaluating image data of the pipe 1 scanned by the scan linear sensor 30 and controlling the driving of the motor 40. do.
In addition, a plurality of connecting rings 64 and auxiliary rollers 62 are provided between the scan linear sensor 30 and the collimator 20 in order to install the track-type inspection apparatus in the pipe 1 according to various sizes of the pipe 1. Connect the auxiliary connector 60 made of).
Next, the action of each component, the guide tube 10 is configured as a cylindrical tube for guiding the radiation source 70.
The collimator 20 is provided on one side of the pipe 1 so as to be transported along the circumference (track) of the pipe 1 to reduce the radiation dose rate other than the source 70 provided from the guide tube 1 as much as possible. It is a device used for.
That is, the collimator 20 makes parallel beam lines of light so as to be irradiated only in the direction necessary for the safety handling of the radiation during radiographic examination using gamma rays such as X-rays, and shields as much as possible in other directions.
The collimator 20 is mounted to the base 22 to which the wheels 24 are attached so that the collimator 20 rotates around the pipe 1 by rotating the wheels 24 along the outer surface of the pipe 1. Can be transported accordingly.
At this time, the isotope of the source 70 is selenium (Se-75), cesium (Cs-137), iridium (Ir-192), cobalt (Co-60), etc. are used, the guide tube 10 for each isotope Since the size is different, the collimator 20 is provided separately for each isotope.
The scan linear sensor 30 constitutes a 2D line sensor by connecting six sensors of 64 × 253 pixels bump-bonded with 0.75 mm CdTe to the CMOS in series. The pipe 1 of the expected welded portion is scanned.
The scan linear sensor 30 is provided to be transportable along the circumference of the pipe 1 on the other side of the pipe 1 opposite to the position of the collimator 20.
That is, the scan linear sensor 30 is mounted on the pedestal 32 to which the wheel 34 is attached so that the wheel 34 rotates along the outer surface of the pipe 1 so that the scan linear sensor 30 is disposed on the opposite side of the collimator 20. It can be transported along the circumference of 1).
The motor 40 is mounted to the pedestal 42, and is connected to the collimator 20 and the scan linear 30 through a connecting ring 46 and a roller 48.
By the above configuration, the collimator 20 and the scan linear sensor 30 interlock with each other and move along the circumference of the pipe 1 as the motor 40 is driven.
The computer (PC) 50 controls the driving of the motor 40 at a remote location through a data cable 31 connected to one end of the scan linear sensor 30 and pipes scanned from the scan linear sensor 30. Analyze and evaluate the image data of (1), and store the scanned image data DB. The reference numeral 80 denotes a power supply unit for stably supplying power through a power cable 81 connected to the other end of the scan linear sensor 30.
On the other hand, looking at the operation of the track-type inspection device of the present invention configured as described above, after attaching the track-type inspection device to the pipe (1) of the welded site where the defect is expected, the radioisotope (Selenium (Se-75), One source 70 selected from cesium (Cs-137), iridium (Ir-192), and cobalt (Co-60) is introduced through the guide tube 10.
Next, the motor 40 is driven by the computer 50 while irradiating the source in the predetermined direction of the source 70, that is, the scan linear sensor 30, through the collimator 20, so that the track-type inspection device is connected to the pipe 1. The scan linear sensor 30 scans the pipe 1 while moving along the circumference.
Then, the scanned image data is transmitted to the computer 50, and the user analyzes the image data of the pipe 1 to proceed with the evaluation of the defect state of the pipe.
As described above, the preferred embodiment of the present invention has been described, but the present invention is not limited to the track-type inspection device as the specific preferred embodiment described above, and the present invention is not limited to the scope of the present invention as claimed in the claims. As those skilled in the art to which the invention pertains, various modifications may be made, and such changes may be included within the technical scope of the claims.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020080017218A KR20090091971A (en) | 2008-02-26 | 2008-02-26 | A track type inspection apparatus using gamma ray isotope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020080017218A KR20090091971A (en) | 2008-02-26 | 2008-02-26 | A track type inspection apparatus using gamma ray isotope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20090091971A true KR20090091971A (en) | 2009-08-31 |
Family
ID=41209161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020080017218A KR20090091971A (en) | 2008-02-26 | 2008-02-26 | A track type inspection apparatus using gamma ray isotope |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20090091971A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768218A (en) * | 2012-07-17 | 2012-11-07 | 中广核检测技术有限公司 | Radiographic inspection tool rack for nozzle welding line of voltage stabilizer in nuclear power station |
| KR20200001848A (en) * | 2018-06-28 | 2020-01-07 | 삼성중공업 주식회사 | Digital radiography apparatus for pipes and method for the same |
| KR20200001884A (en) * | 2018-06-28 | 2020-01-07 | 삼성중공업 주식회사 | Digital radiography apparatus for pipes |
-
2008
- 2008-02-26 KR KR1020080017218A patent/KR20090091971A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768218A (en) * | 2012-07-17 | 2012-11-07 | 中广核检测技术有限公司 | Radiographic inspection tool rack for nozzle welding line of voltage stabilizer in nuclear power station |
| KR20200001848A (en) * | 2018-06-28 | 2020-01-07 | 삼성중공업 주식회사 | Digital radiography apparatus for pipes and method for the same |
| KR20200001884A (en) * | 2018-06-28 | 2020-01-07 | 삼성중공업 주식회사 | Digital radiography apparatus for pipes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |