KR20170003240U - Radiation non-destructive inspection apparatus - Google Patents

Radiation non-destructive inspection apparatus Download PDF

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Publication number
KR20170003240U
KR20170003240U KR2020160001236U KR20160001236U KR20170003240U KR 20170003240 U KR20170003240 U KR 20170003240U KR 2020160001236 U KR2020160001236 U KR 2020160001236U KR 20160001236 U KR20160001236 U KR 20160001236U KR 20170003240 U KR20170003240 U KR 20170003240U
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KR
South Korea
Prior art keywords
wire
radiation
source container
source
reel
Prior art date
Application number
KR2020160001236U
Other languages
Korean (ko)
Inventor
김용백
석진성
신상룡
정창욱
심선만
정다운
Original Assignee
현대중공업 주식회사
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR2020160001236U priority Critical patent/KR20170003240U/en
Publication of KR20170003240U publication Critical patent/KR20170003240U/en

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    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0296—Welds

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Optics & Photonics (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

The present invention relates to a radiation nondestructive inspection apparatus, and more particularly to a radiation nondestructive inspection apparatus capable of carrying out a nondestructive inspection in a state where an operator is separated from an inspected object.
To this end, a source container in which a radiation source is received in a shielded state such that the radiation source is not exposed to the outside; A collimator for receiving a radiation source accommodated in the source container and irradiating the inspected object with radiation; And a remote control unit connected to the source container and remotely operated to transfer the radiation source to the collimator, wherein the remote control unit is configured such that when the wire is wound on the reel, And a feeding unit for feeding the wire to the nondestructive inspection apparatus.

Description

[0002] RADIATION NON-DESTRUCTIVE INSPECTION APPARATUS [0003]

The present invention relates to a radiation nondestructive inspection apparatus, and more particularly, to a radiation nondestructive inspection apparatus capable of performing a nondestructive inspection while a worker is spaced apart from an inspected object.

Generally, in the industrial field, non-destructive inspection is carried out after welding to check whether there is a defect in the welding part without damaging the welding part. For example, a non-destructive inspection is carried out to check whether there is a defect in a welded portion of a pipe for transporting a fluid or a welded portion of a tank for storing a fluid.

Nondestructive tests include radiation penetration test, ultrasonic test, magnetic particle test, penetration test, eddy current test, and leakage test. Radiographic tests are usually used to obtain relatively simple and accurate results.

The non-destructive inspection using radiation transmits the radiation to the inspected object, and inspects the defects of the inspected object by regenerating the image formed on the film or the CRT from the transmitted radiation. Since radiation is harmful to the operator, exposure of the worker to the radiation emitted by the radiation nondestructive testing system may damage the worker's body.

In addition, according to the Nuclear Safety Law, in case of using mobile radioisotopes, the client who has requested the radiological inspection is obliged to inspect the radioactive worker who moves the radioactive isotope in the workplace of the client. And shall provide a safe working environment in accordance with the requirements.

Therefore, it is very important to protect the workers using the radiation nondestructive inspection apparatus, and accordingly, the related rules for providing a safe working environment have been strengthened.

FIG. 1 is a schematic view showing a configuration of a conventional radiation nondestructive testing apparatus, and FIG. 2 is a view showing a control portion of a conventional radiation nondestructive testing apparatus.

1 and 2, a conventional radiation nondestructive testing apparatus includes a source container 10 in which a radiation source is housed in a shielded state so that a radiation source is not exposed to the outside, a collimator And a wire supply unit 30 connected to the source container 10 and feeding the wire W to transport the radiation source to the collimator 20. [

The wire feeder 30 includes a feeding gear 31 for feeding the wire to the source container 10 and a handle 32 for rotating the feeding gear 31, A rear guide RG for guiding the wire W to the container 10 and a front guide FG for guiding the wire W to allow the wire W to pass through the source container 10 and transfer the radiation source to the collimator 30 .

More specifically, the wire feed part 30 and the rear guide RG are formed such that a wire W is inserted into a rear guide RG formed in a hose type and a wire W on one side is wound on a feeding gear 31 The wire W can be fed to the source container 10 by switching the direction of the wire W to the other direction by the rotating operation of the feeding gear 31 in the unfolded state.

On the other hand, the operator manually operates the handle 32 to rotate the feeding gear 31 to feed the wire W.

The wire W having passed through the source container 10 transfers the source of the wire to the collimator 20 through the front guide FG and photographs the radiation when the radiation is irradiated through the collimator 20 The image is formed on the film attached to the inspected object, thereby completing the radiation nondestructive inspection work.

However, since the conventional radiation nondestructive testing apparatus as described above needs to operate the wire supplying section 30 at a distance from the source container 10 in which the radiation is accommodated, a wide shielding space is required, 10, the operator has to manually operate the handle 32, so that there is a problem that the operator is located close to the source container 10 in which the radiation source is accommodated and is exposed to a large amount of radiation.

Further, since the rear guide RG is formed into a hose type in which the wire W is inserted, there is a case where the hose is twisted, so that it is difficult to feed the wire W smoothly and the weight becomes large, there is a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art and it is an object of the present invention to reduce the amount of radiation exposure by automatically transmitting a wire to a source container remotely so that a worker can perform a radiation nondestructive inspection at a distance from a radiation source And to provide a radiation nondestructive inspection apparatus capable of performing the inspection.

According to an aspect of the present invention, there is provided a lithographic apparatus comprising: a source container in which a radiation source is accommodated in a state that the radiation source is not exposed to the outside; A collimator for receiving a radiation source accommodated in the source container and irradiating the inspected object with radiation; And a remote control unit connected to the source container and remotely operated to transfer the radiation source to the collimator, wherein the remote control unit is configured such that when the wire is wound on the reel, And a feeder for feeding the wire to the feeder.

A rear guide for guiding the wire wound around the reel to the source container; And a wire guide for guiding the wire through the source container to transport the radiation source to the collimator.

The feeding unit may further include a reel on which the wire is wound; A feeding gear for releasing the wire wound on the reel from the reel; And a plurality of guide rollers disposed around the feeding gear to prevent the wire from being detached from the feeding gear while keeping the wire in close contact with the feeding gear.

Preferably, the feeding unit is installed in a form of a module so as to be easily detachable from the remote control unit so as to facilitate the wire replacement and maintenance work.

The remote control unit may be remotely controlled in a wired or wireless manner.

The radiation nondestructive inspection apparatus according to the present invention has the following effects.

It is possible to reduce the volume of the rear guide and to automatically feed the wire to the source container according to the guidance of the rear guide by operating the feeding gear according to the driving of the motor.

Accordingly, it is possible to reduce the volume of the rear guide to improve the ease of transportation, and the operator can remotely transmit the wire in a state of being away from the source container from which the radiation is emitted, thereby reducing the radiation dose have.

1 is a schematic view showing the configuration of a conventional radiation nondestructive test apparatus.
2 is a view showing a control portion of a conventional radiation nondestructive test apparatus.
3 is a block diagram schematically showing the configuration of a radiation nondestructive inspection apparatus according to the present invention.
4 is a view showing a remote control part of a radiation nondestructive inspection apparatus according to the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor may properly define the concept of the term to describe its design in the best possible way It must be construed as a meaning and a concept consistent with the technical idea of the present invention based on the principle.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to FIGS. 3 to 4 attached hereto.

FIG. 3 is a schematic view showing a configuration of a radiation nondestructive testing apparatus according to the present invention, and FIG. 4 is a view showing a remote control part of a radiation nondestructive testing apparatus according to the present invention.

3 to 4, the radiation nondestructive inspection apparatus according to the present invention mainly includes a source container 100, a collimator 200, and a remote control unit 300.

The radiation nondestructive inspection apparatus according to the present invention is a device for performing nondestructive inspection using radiation and automatically transmitting the wire to the source container so that the operator can perform the radiation nondestructive inspection at a distance from the radiation source To thereby reduce the amount of radiation exposure.

First, the source container 100 is a portion where a radiation source is accommodated.

The source container 100 is shielded to prevent the radiation source from being received therein and from radiating the radiation source to the outside. At this time, a barrier wall may be formed to shield radiation or to prevent radiation from being externally applied. Concrete, lead, iron, or the like may be used as the shielding material.

The source container 100 is disposed in a shielded space which is a space a certain distance from the operator.

Sockets for connecting the rear guide (RG) and the front guide (FG), which will be described later, are provided on one side and the other side of the source container 100.

Next, the collimator 200 is a part for irradiating the inspected object for performing the radiation nondestructive inspection.

The collimator 200 receives the radiation source accommodated in the source container 100 and irradiates the inspected object with the radiation. The wire W passing through the source container 100 receives the radiation source from a front guide FG) to the collimator 200, and then irradiates the inspected object with the radiation.

Next, the remote control unit 300 is a remotely operated part for transferring the radiation source to the collimator 200.

The remote control unit 300 is connected to the source container 100 and feeds the wire W serving as a radiation transmission medium to the source container 100 in which the radiation source is accommodated to deliver the radiation source to the collimator 200 It plays a role.

The wire W is fed from the remote control unit 300 to the source container 100 and the wire W is fed to the source container 100. The wire W is fed from the remote control unit 300 to the source container 100, The radiation source is transmitted to the collimator 200, the radiation is irradiated to the inspected object through the collimator 200, and a photograph is taken to perform the radiation nondestructive inspection work.

The remote control unit 300 is connected to the feeding unit 300 for feeding the wire W to the source container 100 while the wire W is being wound around the reel 311, (310).

A rear guide RG and a wire W for guiding the wire W wound on the reel 311 to the source container 100 are passed through the source container 100 and a radiation source is connected to the collimator 200 And a front guide FG for guiding the wire W to transport the wire W to the front side.

The rear guide RG is a part for connecting between the source container 100 and the remote control unit 300 and guides the wire W from the remote control unit 300 to the source container 100 The front guide FG is a part connecting the source container 100 and the collimator 200 and guides the wire W passing through the source container 100 to the collimator 200.

The rear guide RG and the front guide FG are coupled to sockets formed on both sides of the source container 100, respectively.

The wire W guided to the rear guide RG is fed to the source container 100 and then guided to the front guide FG through the radiation source so that the radiation source can be transmitted to the collimator 200 do.

The feeding unit 310 includes a reel 311, a feeding gear 312, and a guide roller 313.

The reel 311 is a portion where the wire W is wound.

The reel 311 includes a winding portion 311a on which a rotation center axis is formed and on which a wire W is wound and a housing 311b surrounding the winding portion 311a to prevent the wire W from being detached. .

The feeding gear 312 is a portion that serves to unwind the wire W wound on the winding portion 311a of the reel 311 from the reel 311. [

That is, the wire W wound on the winding portion 311a of the reel 311 is caught by the teeth of the feeding gear 312 and gradually released from the winding portion 311a by the rotation of the feeding gear 312, The wire W is fed in the direction of the wire 100.

A plurality of guide rollers 313 are disposed around the feeding gear 312 to prevent the wire W from being separated from the feeding gear 312 while keeping the wire W in close contact with the feeding gear 312.

The guide roller 313 reinforces the restraining force of the wire W held on the feeding gear 312 so as to be brought into close contact with the feeding gear 312.

On the other hand, the wire W is threaded on the outer circumferential surface so as to improve the frictional force, and is engaged with the teeth of the feeding gear 312, so that the wire W can be smoothly released by the rotation of the feeding gear 312.

In addition, the feeding unit 310 may be configured as one module to facilitate the replacement and maintenance work of the wire W, and may be installed in a detachable form from the remote control unit 300 have.

In addition, the length of the front guide FG can be set according to the installation space and the characteristics of the inspected object, so that the feeding part 310 can be easily attached and detached and the feeding part 310 of the new unit can be replaced and used .

The remote control unit 300 may be remotely controlled in a wired or wireless manner.

That is, the operator can remotely control the operation of the remote control unit 300 in a wired or wireless manner. At this time, the operator can manipulate the remote pendant RP to transmit an operation signal and operate the remote control.

In addition, when configured in a wireless manner, a remote control unit (not shown) for receiving a radio signal may be further installed in the remote control unit 300.

The feeding unit 310 is operated according to the operation of the remote control unit 300. At this time, a motor (not shown) is installed in the remote control unit 300 to rotate the feeding gear 312, The wire W can be loosened and fed.

Here, the motor may be constituted by a plurality of step motors and operated in parallel operation.

Hereinafter, a method of performing the radiation nondestructive inspection using the above-described radiation nondestructive testing apparatus with reference to FIGS. 3 to 4 will be described.

First, the source container 100 and the remote control unit 300 are positioned at predetermined intervals at the position where the inspected object for performing the radiation nondestructive inspection is located.

At this time, the collimator 200 sets and positions the collimator 200 so that the radiation can be irradiated toward the inspected object.

Then, a fence is installed in a space where radiation is likely to be emitted to block a person's access and form a shielded space.

Next, the operator remotely operates the remote control unit 300 by operating the remote pendant RP while being away from the shielded space where the source container 100 and the remote control unit 300 are located.

Then, when the remote control unit 300 is operated, the feeding gear 312 is rotated by the motor, and the wire (not shown) wound around the winding unit 311a of the reel 311 in accordance with the rotation of the feeding gear 312 W are brought into close contact with the teeth of the feeding gear 312 and drawn out by the rear guide RG.

Next, the wire W fed to the rear guide RG passes through the source container 100 to transfer the radiation source, and the wire W is guided through the front guide FG to the collimator 200 So that the radiation can be irradiated onto the inspected object through the collimator 200.

Then, when the subject is irradiated with the radiation through the collimator 200, photographing is started and the image is formed on the film attached to the subject, and the nondestructive inspection of the subject using the radiation is completed.

Then, it is possible to judge the presence or absence of an abnormality of the inspected object through the photographed film.

The wire W can be wound around the reel 311 to reduce the volume of the rear guide RG and the feeding gear 312 is operated according to the driving of the motor so that the rear guide RG It is possible to automatically feed the wire W to the source container 100 according to the guidance of the user.

Accordingly, it is possible to reduce the volume of the rear guide RG, thereby improving the ease of transportation, and the operator can remotely transmit the wire W while being separated from the source container 100 from which the radiation is emitted Therefore, there is a feature that can reduce radiation dose.

It should be understood, however, that the present invention is not limited to the above-described embodiments, but may be modified and modified without departing from the gist of the present invention, and that such modifications and variations are included in the technical idea of the present invention .

100: source container 200: collimator
300: remote control unit 310:
311: Reel 311a: Winder
311b: housing 312: feeding gear
313: guide roller W: wire
RP: Remote pendant RG: Rear guide
FG: Front guide

Claims (5)

A source container in which a radiation source is received in a shielded state such that the radiation source is not exposed to the outside;
A collimator for receiving a radiation source accommodated in the source container and irradiating the inspected object with radiation; And
And a remote control coupled to the source container and remotely operated to deliver the radiation source to the collimator,
Wherein the remote control unit further comprises a feeding unit for sequentially feeding the wire to the source container while the wire is wound on the reel and rotating the reel in order to feed the wire to the source container. The method according to claim 1,
A rear guide for guiding the wire wound around the reel to a source container;
And a front guide for guiding the wire so that a wire passes through the source container to transfer the radiation source to the collimator. The method according to claim 1,
The feeding unit includes:
A reel for winding the wire;
A feeding gear for releasing the wire wound on the reel from the reel; And
And a guide roller disposed around the feeding gear to prevent the wire from being detached from the feeding gear while keeping the wire in close contact with the feeding gear. The method according to claim 1,
The feeding unit includes:
Wherein the controller is installed in a form of one module so as to facilitate the wire replacement and maintenance work, and is installed in a detachable form from the remote control unit. The method according to claim 1,
The remote-
Characterized in that it can be remotely controlled in a wired or wireless manner.
KR2020160001236U 2016-03-08 2016-03-08 Radiation non-destructive inspection apparatus KR20170003240U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020160001236U KR20170003240U (en) 2016-03-08 2016-03-08 Radiation non-destructive inspection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020160001236U KR20170003240U (en) 2016-03-08 2016-03-08 Radiation non-destructive inspection apparatus

Publications (1)

Publication Number Publication Date
KR20170003240U true KR20170003240U (en) 2017-09-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR2020160001236U KR20170003240U (en) 2016-03-08 2016-03-08 Radiation non-destructive inspection apparatus

Country Status (1)

Country Link
KR (1) KR20170003240U (en)

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