CN104569007B - Posted sides pipeline butt weld center exposure device - Google Patents
Posted sides pipeline butt weld center exposure device Download PDFInfo
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- CN104569007B CN104569007B CN201510054907.0A CN201510054907A CN104569007B CN 104569007 B CN104569007 B CN 104569007B CN 201510054907 A CN201510054907 A CN 201510054907A CN 104569007 B CN104569007 B CN 104569007B
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- straight tube
- sides pipeline
- posted sides
- butt weld
- pipe
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Abstract
The present invention relates to posted sides pipeline butt weld center exposure device, include the curved pipe of the defeated source capsule for guiding gamma-ray detection apparatus, the curved pipe is sequentially connected and formed by the first straight tube, bend pipe and the second straight tube, the free end of first straight tube is located at the geometric center of the butt weld of posted sides pipeline, the free end of second straight tube is piercing in the default through hole of the posted sides pipeline, pass through the setting of curved pipe, the position that γ sources effectively can be delivered to Weld pipe mill exposes, the time for exposure can significantly be shortened, improve gamma-rays operating efficiency and detection sensitivity；The first straight tube and the second straight tube of curved pipe are telescoping tube, and use range is wider；Default through hole is existing instrument hole or three ports on posted sides pipeline, it is no longer necessary to extra openings, reduces cost.
Description
Technical field
The present invention relates to Nondestructive Testing Techniques for Special Equipment field, more particularly to posted sides pipeline butt weld center exposure to fill
Put.
Background technology
In petrochemical industry, power construction installing engineering, wall thickness is more and more wider more than 35mm high pressure posted sides pipeline application
General, ray detection is to detect the important means of posted sides pipeline welding quality, for such detection object, because caliber is little, is added
The pipeline of engineering in practice is having many bends or curves, elbow, threeway, valve, even it is first-class much staff cannot be introduced into pipeline, can only
Using the arrangement of double-walled list shadow, so as to materially increase the difficulty of radiographic inspection.If using X ray double-walled
Single shadow transillumination, scanning thickness are no more than 70mm, and flaw detection is extremely inefficient, can not meet the needs of project progress.Additionally, due to X ray
Machine is in high loaded process state for a long time in flaw detection, therefore the fault rate of equipment is high, these reasons cause X-ray production apparatus without
Method individually completes the radiographic inspection of posted sides pipeline weld bond.In view of gamma ray projector scanning thickness is big, penetration capacity is strong, equipment fault
The low advantage of rate, now also through being detected frequently with γ sources double-walled list shadow, according to conventional flaw detection experience, for scanning thickness T
During >=20mm-25mm, from source strength 50ci or so, as T >=25mm-30mm, from source strength 65ci or so, as the ㎜ -40 of T >=30
During ㎜, from source strength 80ci or so.So still have many problems：When detection time or longer, second, detection is sensitive
Spend it is poor, third, security protection is in larger distance.
The content of the invention
For problem of the prior art, it is an object of the invention to provide a kind of posted sides pipeline butt weld center exposure dress
Put, the ray detection time can be greatly shortened in it, there is provided operating efficiency, and improve ray detection sensitivity.
To achieve the above object, the present invention adopts the following technical scheme that：
Posted sides pipeline butt weld center exposure device, include the arc of the defeated source capsule for guiding gamma-ray detection apparatus
Pipe, the curved pipe are sequentially connected and formed by the first straight tube, bend pipe and the second straight tube, and the free end of the first straight tube is located at thick-walled pipe
The geometric center of the butt weld in road, the free end of the second straight tube are piercing in the default through hole of the posted sides pipeline.
Preferably, the extended line of the extended line of the first straight tube and the second straight tube is mutually perpendicular to.
Preferably, the arc length of the bend pipe is quadrant.
Preferably, the outer wall of first straight tube is provided with least one neck, and one is connected with each neck and is used for and thickness
The location-plate of the inwall contact of wall pipeline.
It is further preferred that the location-plate is made up of rubber or plastics.
Preferably, the first straight tube and the second straight tube are telescoping tube.
Preferably, the default through hole is instrument hole or three ports.
Compared with prior art, the beneficial effects of the present invention are:
The Double-wall Single-image Radiographic Inspection technique of posted sides pipeline is changed to single wall center transillumination, passes through the setting of curved pipe, Neng Gouyou
The position that γ sources are delivered to Weld pipe mill by effect exposes, and can significantly shorten the time for exposure, improves gamma-rays operating efficiency and inspection
Survey sensitivity；The first straight tube and the second straight tube of curved pipe are telescoping tube, and use range is wider；Default through hole is posted sides pipeline
Upper existing instrument hole or three ports, it is no longer necessary to extra openings, reduce cost.
Brief description of the drawings
Fig. 1 is the structural representation of embodiments of the invention.
Wherein, 1, gamma-ray detection apparatus；11st, defeated source capsule；2nd, curved pipe；21st, the first straight tube；22nd, bend pipe；23rd, second is straight
Pipe；3rd, posted sides pipeline；4th, butt weld；5th, through hole is preset；6th, location-plate.
Embodiment
Below, with reference to accompanying drawing and embodiment, the present invention is described further.
Referring to Fig. 1, the present embodiment posted sides pipeline butt weld center exposure device by the way of the transillumination of single wall center, its
Include the curved pipe 2 of the defeated source capsule 11 for guiding gamma-ray detection apparatus 1, curved pipe 2 is by the first straight tube 21, bend pipe 22 and second
Straight tube 23 is sequentially connected composition, and the free end of the first straight tube 21 is located at the geometric center of the butt weld 4 of posted sides pipeline 3, and second
The free end of straight tube 23 is piercing in the default through hole 5 of posted sides pipeline 3, by the setting of curved pipe 2, effectively can visit gamma-rays
The gamma ray projector for hindering machine 1 is delivered to the center exposure of butt weld 4 by defeated source capsule 11, when can significantly shorten exposure
Between, improve gamma-rays operating efficiency and detection sensitivity.As a kind of preferred embodiment, the extended line of the first straight tube 21 and second straight
The extended line of pipe 23 is mutually perpendicular to, and the angle of the extended line of the extended line of the first straight tube 21 and the second straight tube 23 can also be according to reality
Border use environment uses other suitable angles；It is preferred that the section of curved pipe 2 is circle, the internal diameter of curved pipe 2 is slightly larger than defeated
The external diameter of source capsule 11, defeated source capsule 11 is facilitated to pass through.The arc length of bend pipe 22 is preferably quadrant, the curvature of bend pipe 22
Radius size ensures that defeated source capsule can pass through.
Default through hole 5 is existing instrument hole or three ports on posted sides pipeline 3, it is not necessary in order to coordinate the dress of the present embodiment
Put use and extra specially perforate, save time and cost to a certain degree.
The outer wall of first straight tube 21 is provided with least one neck, and one is connected with each neck and is used for and posted sides pipeline 3
The location-plate 6 of inwall contact.The quantity and spacing of location-plate 6 can according to be actually needed determine, 6 preferably circular plate of location-plate,
Its external diameter size is matched with the internal diameter of posted sides pipeline 3, and the periphery of location-plate 6 is contacted with the inwall of posted sides pipeline 3, and it is played to first
The support positioning action of straight tube 21.The location-plate 6 of the present embodiment is preferably made of rubber or plastics, rubber location-plate and plastics
Location-plate compares location-plate 6 made of other materials, can keep stable, plays the fixed effect of support, while facilitate again and become
Shape, so conveniently install and use.An aperture is opened up at the center of location-plate 6, the aperture is used for the free end of the first straight tube 21
Pass through, it is ensured that the geometric center of the free end alignment butt weld 4 of the first straight tube 21, ensure that the scheme of the present embodiment is effective
Carry out.
Because curved pipe 2 needs to be installed into posted sides pipeline 3, install for convenience, the first straight tube 21 and the second straight tube 23
By the way of telescoping tube, the external diameter, internal diameter, docking that posted sides pipeline 3 can be known according to the survey tool of prior art are realized
The data such as the distance of the geometric center of weld seam 4 and default through hole, according to these data can adjust the first straight tube 21, the second straight tube 23 to
It is suitably sized.
The beneficial effect of the present embodiment is：
It is that defeated source capsule 11 is passed through into curved pipe 2 using the posted sides pipeline butt weld center exposure device of the present embodiment, then
The center that radioactive source is delivered to butt weld 4 by gamma-ray detection apparatus 1 is detected, due to there is setting for curved pipe 2
Put, the time for exposure is significantly shortened in the center exposure that γ sources effectively can be delivered to butt weld 4, improves gamma-rays operation
Efficiency and detection sensitivity, and can suitably reduce radioactive source activity, radiocontamination is reduced, shortens security protection distance, guarantor
Member's safety；The first straight tube 21 and the second straight tube 23 of curved pipe 2 are telescoping tube, and use range is wider；Default through hole 5 is heavy wall
Existing instrument hole or three ports on pipeline 3, it is no longer necessary to extra openings, reduce cost；Location-plate 6 plays to curved pipe 2
Support fixed effect, it is ensured that defeated source capsule 11 passes through the geometric center of opposite butt weld 4 after curved pipe, ensure that detection work
Quality.
During operation, measure posted sides pipeline 3 external diameter and internal diameter, the center of butt weld 4 to the default center of through hole 5 distance,
The height on the default surface of through hole 5 to the surface of posted sides pipeline 3, the length of the first straight tube 21 and the second straight tube 23 is adjusted, by suitable chi
Very little location-plate 6 is inserted in the neck of the first straight tube 21, and defeated source capsule 11 is sequentially passed through into the second straight tube 23, bend pipe 22, the first straight tube
21, the exposure cephalic par of defeated source capsule 11 is stretched out from the free end of the first straight tube 21, and the exposure head of defeated source capsule 11 is fixed
Home position in the free end of the first straight tube 21, curved pipe 2 is put into posted sides pipeline 3 together with defeated source capsule 11, makes defeated source capsule
11 photohead end is in the center of butt weld 4, and the free end of the second straight tube 23 is fixed on to the center of default through hole 5
Position.The free end of defeated source capsule 11 and the second straight tube 23 of curved pipe is fixed, in this way, can be grasped according to gamma-ray detection apparatus 1
Make code, driving radioactive source to the defeated photohead end position of source capsule 11 implements radiograph test.
For those skilled in the art, technical scheme that can be as described above and design, make other each
Kind is corresponding to be changed and deforms, and all these change and deformed the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (3)
1. posted sides pipeline butt weld center exposure device, it is characterised in that including the defeated source for guiding gamma-ray detection apparatus
The curved pipe of pipe, the curved pipe are sequentially connected and formed by the first straight tube, bend pipe and the second straight tube, the free end position of the first straight tube
In the geometric center of the butt weld of posted sides pipeline, the outer wall of first straight tube is provided with least one neck, on each neck
A location-plate for being used to contact with the inwall of posted sides pipeline is connected with, the location-plate is made up of rubber or plastics, the second straight tube
Free end be piercing in the default through hole of the posted sides pipeline, the first straight tube and the second straight tube are telescoping tube；It is described default logical
Hole is instrument hole or three ports.
2. posted sides pipeline butt weld center exposure device as claimed in claim 1, it is characterised in that the extension of the first straight tube
The extended line of line and the second straight tube is mutually perpendicular to.
3. posted sides pipeline butt weld center exposure device as claimed in claim 1, it is characterised in that the arc length of the bend pipe
For quadrant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054907.0A CN104569007B (en) | 2015-01-30 | 2015-01-30 | Posted sides pipeline butt weld center exposure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054907.0A CN104569007B (en) | 2015-01-30 | 2015-01-30 | Posted sides pipeline butt weld center exposure device |
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| Publication Number | Publication Date |
|---|---|
| CN104569007A CN104569007A (en) | 2015-04-29 |
| CN104569007B true CN104569007B (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510054907.0A Active CN104569007B (en) | 2015-01-30 | 2015-01-30 | Posted sides pipeline butt weld center exposure device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018185B (en) * | 2019-04-04 | 2021-09-10 | 岭澳核电有限公司 | Nuclear power station welding seam radiographic inspection center exposure device and radiographic inspection method |
| CN110174420A (en) * | 2019-06-12 | 2019-08-27 | 中国华电科工集团有限公司 | A kind of lossless detection method and flaw detection hole closeouts of thermal power plant's pipeline-weld |
| CN112345561B (en) * | 2020-11-12 | 2022-05-10 | 东方电气集团东方汽轮机有限公司 | Effective flaw detection method for nuclear power welding rotor |
| CN112730467B (en) * | 2020-12-22 | 2022-10-21 | 福建福清核电有限公司 | Central method radiographic inspection positioning method |
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| JPH05296753A (en) * | 1992-02-17 | 1993-11-09 | Babcock Hitachi Kk | Roentgengraphing gamma ray source setter |
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| JP2010127677A (en) * | 2008-11-26 | 2010-06-10 | Toshiba Corp | Device and method for radiolucence test for plant installation |
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| CN104569007A (en) | 2015-04-29 |
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