KR101691649B1 - Apparatus for holding position of a radioactive source - Google Patents

Apparatus for holding position of a radioactive source Download PDF

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Publication number
KR101691649B1
KR101691649B1 KR1020150090796A KR20150090796A KR101691649B1 KR 101691649 B1 KR101691649 B1 KR 101691649B1 KR 1020150090796 A KR1020150090796 A KR 1020150090796A KR 20150090796 A KR20150090796 A KR 20150090796A KR 101691649 B1 KR101691649 B1 KR 101691649B1
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KR
South Korea
Prior art keywords
tube
electromagnet
cylinder tube
radiation source
bent portion
Prior art date
Application number
KR1020150090796A
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Korean (ko)
Inventor
김윤길
Original Assignee
한국검사엔지니어링(주)
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Application filed by 한국검사엔지니어링(주) filed Critical 한국검사엔지니어링(주)
Priority to KR1020150090796A priority Critical patent/KR101691649B1/en
Application granted granted Critical
Publication of KR101691649B1 publication Critical patent/KR101691649B1/en

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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
    • G01N23/04—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 forming images of the material
    • G01N23/043—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 forming images of the material using fluoroscopic examination, with visual observation or video transmission of fluoroscopic images
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • 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
    • G01N2223/03—Investigating materials by wave or particle radiation by transmission
    • 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
    • G01N2223/1016—X-ray
    • 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
    • G01N2223/308—Accessories, mechanical or electrical features support of radiation source
    • 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
    • G01N2223/40—Imaging
    • G01N2223/415—Imaging radiographic film
    • 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
    • G01N2223/624—Specific applications or type of materials steel, castings
    • 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
    • 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
    • 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
    • G01N2223/646—Specific applications or type of materials flaws, defects

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (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 provides a non-destructive inspection apparatus for fixing a position of a radiation source for a non-destructive inspection which can set a radiation source at a precise position of a inspection point without requiring the inspector to construct a site for supporting the radiation source at a welding site inspection point will be.
A guide formed in a cylindrical shape and fixed to expose a front end portion of a cable for providing a movement path of the radiation source to the inside; A plurality of cylinders mounted on the outer circumferential surface of the guide and operated by the air to move the rod forward and backward; And a wheel installed at a front end of each of the rods and brought into contact with the inner surface of the tube according to advancement of the rod and rolling the inner surface of the tube according to the movement of the guide, An air injection member installed in front of the air injection member to sweep the inner surface of the tubular body together with the wheel and to be attached to the inner surface of the tubular body by energization, Wherein the cylinder has a cylinder tube in which an inner portion is divided into an advance chamber and a reverse chamber by a piston head provided at a rear end of the rod, and a passage is formed in the cylinder tube, A first connecting tube for connecting the outside and the advancing chamber to each other, and a second connecting tube for connecting the outside of the cylinder tube and the backward chamber Wherein the air injection member includes a bent portion having one end connected to the front side of the cylinder tube and the other end directed toward the inner surface of the tubular body, and a second connecting pipe for connecting the other end of the bent portion And an electromagnet member having an electromagnet member disposed to be spaced apart from a front side of the bent portion, and a third connection pipe formed in the bending portion to form a channel to communicate the first connection pipe and the injection port, A roller, one side of which is fixedly coupled to both side surfaces of the bending part and the other side of which is coupled to the rotation axis of the electromagnet roller so that the rotation axis of the electromagnet roller can be rotated about its axis, And a battery electrically connected to the battery.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for fixing a position of a radiation source for a non-destructive inspection, and more particularly, to a device for fixing a position of a radiation source for a non-destructive inspection which can fix a radiation source for irradiating the radiation.

In general, nondestructive testing is very useful for measuring the presence of internal defects such as welding conditions at various industrial sites where power plant construction sites, pipelines, and pressure vessels are manufactured. In addition, it can be inspected without damaging the object Which contributes greatly to the improvement of product stability and reliability.

The radiation irradiator used for the ordinary non-destructive inspection is a non-destructive inspection equipment which can inspect the internal defects of the structures such as pipes and steel pipes through radiography. The radiator consists of a container that shields and stores the radiation source, a controller that controls the transmission of the radiation source, and a cable that provides the transmission path of the radiation source.

In the nondestructive inspection using a radiation applicator, the radiation source provided at the distal end of the cable is fixed to the inspection point, and then the film is attached to the outer surface of the object to be inspected and the controller is operated to irradiate the radiation.

In the case of performing non-destructive inspection on defects in the tube by operating such a radiation irradiator, a separate holder or support is directly manufactured at the work site to support the radiation source positioned at the center of the welded portion of the tube, There is a problem in that the accuracy of the inspection is lowered, and there is a problem that a deflection phenomenon occurs during a long time of installation.

Korean Patent Registration No. 10-1476094 "Radiation shielding cover unit for non-destructive inspection and method of installing the same"

The present invention has been devised to solve the problems described above, and it is an object of the present invention to provide a non-destructive inspection method capable of setting a radiation source at a precise position of a test point, It is an object of the present invention to provide a position fixing apparatus for a radiation source for inspection.

According to another aspect of the present invention, there is provided an apparatus for fixing a position of a radiation source for non-destructive inspection of a welded portion of a tube through a radiation transmission method, the apparatus comprising: A guide fixed to expose a front end of a cable providing a movement path of the radiation source; A plurality of cylinders mounted on the outer circumferential surface of the guide and operated by the air to move the rod forward and backward; And a wheel installed at a front end of each of the rods and brought into contact with the inner surface of the tube according to advancement of the rod and rolling the inner surface of the tube according to the movement of the guide, An air injection member installed in front of the air injection member to sweep the inner surface of the tubular body together with the wheel and to be attached to the inner surface of the tubular body by energization, Wherein the cylinder has a cylinder tube in which an inner portion is divided into an advance chamber and a reverse chamber by a piston head provided at a rear end of the rod, and a passage is formed in the cylinder tube, A first connection pipe connecting the outside and the advance chamber, and a second connection pipe connecting the outside of the cylinder tube and the backward chamber Wherein the air injection member includes a bent portion having one end connected to the front side of the cylinder tube and the other end directed toward the inner surface of the tubular body, and a second connecting pipe for connecting the other end of the bent portion And an electromagnet member having an electromagnet member disposed to be spaced apart from a front side of the bent portion, and a third connection pipe formed in the bending portion to form a channel to communicate the first connection pipe and the injection port, A roller, one side of which is fixedly coupled to both side surfaces of the bending part and the other side of which is coupled to the rotation axis of the electromagnet roller so that the rotation axis of the electromagnet roller can be rotated about its axis, And a battery electrically connected to the battery.

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As described above, according to the present invention, the following effects can be expected.

It is possible to set the radiation source at the precise position of the inspection point, thereby making it possible to perform the preparation process of the non-particulate inspection simply and quickly, and the advantage of improving the reliability of the inspection result can be expected.

1 is a schematic perspective view of the present invention.
2 is a side view of the present invention.
3 is a sectional view of the air supply structure of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, the apparatus for fixing a position of a radiation source for non-destructive inspection according to the present invention is for fixing the position of a radiation source for nondestructive inspection of a welded portion of a tube by a radiation transmission method, A cylinder 200, and a traveling unit 300.

The guide 100 is formed in a cylindrical shape, and a cable C for providing a path for moving the radiation source is inserted from a container (not shown) storing the radiation source, and the cable C is inserted so that the front end is exposed while being fixed And a fastener capable of fixing the front end portion of the cable can be formed.

The cylinder 200 is a pneumatically operated cylinder in which the rod 220 is operated in the forward and backward directions by high pressure air. The cylinder 200 is installed at a predetermined interval along the circumference of the guide 100, 100 so as to support the guide 100 from the inner surface of the tube.

The cylinder 200 is supplied with high pressure air through a cylinder tube 210 partitioned into an advance chamber 211 and a reverse chamber 212 by a piston head 230 provided at the rear end of the rod 220 Thereby enabling the rod 220 to move forward and backward.

In addition, a first connection pipe 213 and a second connection pipe 214 are formed in the cylinder tube 210 to allow the rod 220 to reciprocate forward and backward by receiving external high-pressure air. The second connecting pipe 214 connects the outside of the cylinder tube 210 to the advance chamber 211 by forming a pipe in the cylinder tube 210. The second connecting pipe 214 connects the cylinder tube 210 to the cylinder tube 210, So that the outside of the cylinder tube 210 communicates with the back chamber 212.

The first connection pipe 213 and the second connection pipe 214 are connected to a compressor (not shown) for providing high-pressure air, and connected to a hose (not shown) for transferring high-pressure air whose flow rate can be controlled through the control of the compressor. (Not shown), and the hose may be installed along the inside of the guide 100 so that the first connection pipe 213 and the second connection pipe 214 can be connected to each other will be.

In addition, the traveling unit 300 is installed on the front end side of each cylinder 200, and travels on the inner surface of the tube according to the movement of the guide 100, An air injection member 320, and an electromagnet 330 so that the radiation source can be positioned at the welded portion of the electrode 310. [

The wheel 310 is wrapped by a cushion of a flexible material on the outer circumference and is installed at the front end of the rod 220 to be in contact with the inner surface of the tube according to advancement of the rod 220, The inner surface of the tube is then rolled.

In addition, the air injection member 320 is installed in front of the wheel 310 and receives air supplied to the cylinder to inject foreign particles to remove foreign substances on the moving path of the wheel 310. The air injection member 320 includes a bending portion 321, An injection port 322 and a third connection pipe 323.

The bent portion 321 is formed in a vertically bent shape and has one end connected to the front surface of the cylinder tube 210 and the other end directed toward the inner surface of the tubular body. The injection port 322 is formed in a hemispherical shape having a plurality of injection holes (not shown) and is installed at the other end of the bending portion 321.

In addition, the third connection pipe 323 forms a channel on the inner side of the bending portion 321 to communicate the first connection pipe 213 and the injection port 322. In this case, it is preferable that a check valve is installed on the pipe of the third connection pipe 213 and the first connection pipe 310 to prevent the supplied air from flowing back in advance.

In addition, the electromagnet member 330 is installed on the front side of the air injection member 320 and is attached to the inner surface of the tubular body along with the wheel 310 to roll the inner surface of the tubular body, And includes an electromagnet roller 331, a connecting portion 332, and a battery 333 for fixing.

The electromagnet roller 331 is made of a metal such as iron and is wound with a coil that can be energized therein. The electromagnet roller 331 is disposed at a predetermined distance on the front side of the bending portion 320 so as to form an inner surface of the tube.

The connection part 332 is fixed to both sides of the bending part 320 at one side and is coupled to the rotation shaft of the electromagnet roller 331 at the other side. The rotation shaft is supported by bearings so that the rotation axis can be rotated. do.

When the coil 333 is electrically connected to the coil of the electromagnet roller 331, the electromagnet roller 331 is electromagnetically coupled to the inner surface of the tubular body. The movement of the wheel 310 is stopped and the guide 100 is supported by the respective cylinders 200 and fixed to the inner surface of the tube. It is preferable that the energization control between the battery 333 and the electromagnet roller 331 is performed using a switching means controlled by radio.

As described above, the technical idea of the present invention is to provide a non-destructive inspection source for non-destructive inspection capable of setting the source of radiation at an accurate position of the inspection point, It is to be understood that the present invention is intended to provide a fixing device.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the scope of the present invention should be construed within the scope of the appended claims to cover various modifications.

100: Guide
200: Cylinder
210: cylinder tube
220: Load
230: Piston head
211: forward chamber
212: reverse chamber
213: first connector
214: second connector
300: driving unit
310: Wheel
320: air injection member
321:
322:
323: Third connection pipe
330 Electromagnet member
331: electromagnet roller
332:
333: Storage battery

Claims (3)

An apparatus for fixing the position of a radiation source for non-destructive inspection of a welded portion of a tubular body by a radiation transmission method,
A guide formed in a cylindrical shape and fixed to expose a front end of a cable for providing a movement path of the radiation source to the inside;
A plurality of cylinders mounted on the outer circumferential surface of the guide and operated by the air to move the rod forward and backward; And
A wheel installed at a front end of each of the rods and brought into contact with the inner surface of the tube according to advancement of the rod and rolling the inner surface of the tube according to the movement of the guide; And an electromagnet member attached to the inner surface of the tube by energizing the inner surface of the tube together with the wheel, which is installed in front of the air injection member And a driving unit
The cylinder
A cylinder tube partitioned into a forward chamber and a backward chamber by a piston head provided at the rear end of the rod,
A first connection pipe for forming a conduit in the cylinder tube to communicate the outside of the cylinder tube with the advance chamber,
And a second connection pipe forming a channel in the cylinder tube and communicating the outside of the cylinder tube with the backward chamber,
The air-
A bent portion having one end connected to the front side of the cylinder tube and the other end directed toward the inner surface of the tubular body,
An injection port provided at the other end of the bent portion,
And a third connection pipe forming a channel in the bent portion to communicate the first connection pipe and the injection port,
The electromagnet member
An electromagnet roller disposed so as to be spaced apart from the front side of the bent portion,
A connecting portion having one side fixedly coupled to both side surfaces of the bending portion and the other side coupled to the rotating shaft of the electromagnet roller so that the rotating shaft of the electromagnet roller can be rotated axially,
And a battery disposed on a front side of the bent portion and electrically connected to the electromagnet roller. delete delete
KR1020150090796A 2015-06-25 2015-06-25 Apparatus for holding position of a radioactive source KR101691649B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150090796A KR101691649B1 (en) 2015-06-25 2015-06-25 Apparatus for holding position of a radioactive source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150090796A KR101691649B1 (en) 2015-06-25 2015-06-25 Apparatus for holding position of a radioactive source

Publications (1)

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KR101691649B1 true KR101691649B1 (en) 2016-12-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210093739A (en) 2020-01-20 2021-07-28 주식회사 에이피엔 A Fixing Jig for a Radiation Investigating Apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009109390A (en) * 2007-10-31 2009-05-21 Hitachi Engineering & Services Co Ltd Nondestructive inspection apparatus and nondestructive inspection method
KR20100034478A (en) * 2008-09-24 2010-04-01 주식회사 디섹 Radioisotope centering devices for radiography of pipe
KR101418263B1 (en) * 2013-08-12 2014-07-10 주식회사 에이피엔 Collimator Apparatus Having Auxiliary Device for Determining Location of Film
JP2014166806A (en) * 2013-02-28 2014-09-11 Mitsubishi Heavy Ind Ltd In-pipe travel device and in-pipe inspection device
KR101476094B1 (en) 2014-03-25 2014-12-23 김수보 Ray radiation shielding cover for non-destructive testing unit and its installation method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009109390A (en) * 2007-10-31 2009-05-21 Hitachi Engineering & Services Co Ltd Nondestructive inspection apparatus and nondestructive inspection method
KR20100034478A (en) * 2008-09-24 2010-04-01 주식회사 디섹 Radioisotope centering devices for radiography of pipe
JP2014166806A (en) * 2013-02-28 2014-09-11 Mitsubishi Heavy Ind Ltd In-pipe travel device and in-pipe inspection device
KR101418263B1 (en) * 2013-08-12 2014-07-10 주식회사 에이피엔 Collimator Apparatus Having Auxiliary Device for Determining Location of Film
KR101476094B1 (en) 2014-03-25 2014-12-23 김수보 Ray radiation shielding cover for non-destructive testing unit and its installation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210093739A (en) 2020-01-20 2021-07-28 주식회사 에이피엔 A Fixing Jig for a Radiation Investigating Apparatus
KR20210144631A (en) 2020-01-20 2021-11-30 주식회사 에이피엔 A Fixing Jig for a Radiation Investigating Apparatus

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