CN204387574U - For the gamma-ray interior transillumination support of Large Diameter Pipeline - Google Patents
For the gamma-ray interior transillumination support of Large Diameter Pipeline Download PDFInfo
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- CN204387574U CN204387574U CN201420752396.0U CN201420752396U CN204387574U CN 204387574 U CN204387574 U CN 204387574U CN 201420752396 U CN201420752396 U CN 201420752396U CN 204387574 U CN204387574 U CN 204387574U
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Abstract
The utility model provides a kind of for the gamma-ray interior transillumination support of Large Diameter Pipeline, described interior transillumination support comprises fixed support tube and center exposure source conduit, described center exposure source conduit is arranged on the center position of described fixed support tube, and described center exposure source conduit and described fixed support tube are fixed as one mutual vertically, the two ends of described fixed support tube are respectively equipped with fixed support runners, and described center exposure source conduit is used for fixing radiation source conduit.The utility model is used for the gamma-ray interior transillumination support of Large Diameter Pipeline for the inaccessible pipe weld seam of some personnel, under the prerequisite ensureing pipeline integrity, designs and arranges by remotely-controlled conduit, accurately, firmly locate.This interior transillumination support can save testing cost effectively, shortens detection time, ensure that the recall rate of weld defect.
Description
Technical field
The utility model relates to engineering X-ray Testing Technology field, and particularly one is used for the gamma-ray interior transillumination support of Large Diameter Pipeline.
Background technique
In engineering X-ray Testing Technology field, usually exist because cause specific causes the inaccessible pipe weld seam of personnel.At present, center or eccentric exposure technique requirement are met for these, but the inaccessible pipe weld seam of personnel, general employing three kinds of processing modes.
The first is that caliber is comparatively large, and nearly level moves towards the circumferential weld of layout, and the general pipe crawling device that adopts detects.Fig. 1 is the schematic diagram that pipe crawling device detects, as shown in Figure 1, pipe crawling device 100 comprises film 110 and Gamma ray source 120, and wherein film 110 is arranged in outside pipeline 130, Gamma ray source 120 is positioned at pipeline 130, is detected by film 110 pairs of Gamma ray sources 120.But this detection mode is only applicable to the detection that nearly level moves towards pipeline, and cost of equipment is very high, safeguard inconvenience.
The second be for caliber larger move towards circumferential weld arbitrarily, the reserved flaw detection hole on weld seam side.Fig. 2 is the schematic diagram detected from flaw detection hole center exposure, and as shown in Figure 2, detection device 200 comprises conduit 210 and film 230, and conduit 210 stretches to source 211 by the flaw detection hole 221 be opened on pipeline 220, is detected by film 230.The shortcoming of this detection mode is the integrity destroying pipeline, must through the agreement of owner or design side, and perforate cost and shutoff cost higher, construction period lengthens.
The third be cannot open flaw detection hole or caliber less, what pipe thickness was thinner moves towards circumferential weld arbitrarily, usually adopts double-walled list shadow to detect.Fig. 3 is that double-walled list shadow detects schematic diagram, and as shown in Figure 3, source 310 is arranged on the side of caliber 320 by double-walled list shadow detection device 300, and film 330 is positioned at the opposite side of caliber.The shortcoming of this detection mode is that detection time is very long, and increases with caliber and wall thickness and significantly increase.
Model utility content
The technical problems to be solved in the utility model is the defect such as mode length consuming time, maintenance inconvenience in order to overcome detecting tube weld seam in prior art, provides a kind of for the gamma-ray interior transillumination support of Large Diameter Pipeline.
The utility model solves above-mentioned technical problem by following technical proposals: a kind of for the gamma-ray interior transillumination support of Large Diameter Pipeline, its feature is, described interior transillumination support comprises fixed support tube and center exposure source conduit, described center exposure source conduit is arranged on the center position of described fixed support tube, and described center exposure source conduit and described fixed support tube are fixed as one mutual vertically, the two ends of described fixed support tube are respectively equipped with fixed support runners, and described center exposure source conduit is used for fixing radiation source conduit.
Preferably, between the two ends of described fixed support tube and described fixed support runners, be also connected with flexible rod, make described flexible rod stretch along described fixed support tube and locate.
Preferably, described fixed support runners comprises the first connected element and one-way wheel, and one end of described first connected element is connected with described fixed support tube, and the other end is connected with described one-way wheel.
Preferably, described first connected element comprises spring base, constrictor, spring and spring seat;
Described constrictor is set in described spring base, one end of described constrictor is connected with described flexible rod, the other end is against one end of spring in described spring base, and the other end of described spring is against described spring seat, and the outside of described spring seat is connected with described one-way wheel.
Preferably, the lower end of described center exposure source conduit is fixed with hand lever fixed tube, is provided with hand lever in described hand lever fixed tube.
Preferably, described hand lever comprises interconnective rotating shaft and handle, and the end of described rotating shaft is provided with fastening positioning element.
Preferably, described interior transillumination support also comprises rotational support pipe and eccentric exposure source pezzer's catheter,mushroom cathete, described rotational support pipe is connected with described fixed support tube side by side by the fastening positioning element of described roller end, to make described rotational support pipe can along described axis of rotation;
One end of described rotational support pipe is connected with described eccentric exposure source pezzer's catheter,mushroom cathete, and the other end is fixed with rotational support runners, and described eccentric exposure source pezzer's catheter,mushroom cathete is used for fixing radiation source conduit.
Preferably, one end of described rotational support pipe is connected with described eccentric exposure source pezzer's catheter,mushroom cathete by eccentric arm, and the other end is connected with described rotational support runners by flexible rod.
Preferably, described rotational support runners comprises the second connected element and universal wheels, and one end of described second connected element is connected with described rotational support pipe, and the other end is connected with described universal wheels.
Preferably, described second connected element comprises spring base, constrictor, spring and spring seat;
Described constrictor is set in described spring base, one end of described constrictor is connected with described flexible rod, the other end is against one end of spring in described spring base, and the other end of described spring is against described spring seat, and the outside of described spring seat is connected with described universal wheels.
Positive progressive effect of the present utility model is: the utility model is used for the gamma-ray interior transillumination support of Large Diameter Pipeline for the inaccessible pipe weld seam of some personnel, under the prerequisite ensureing pipeline integrity, design is arranged by remotely-controlled conduit, accurately, firmly locates.This interior transillumination support can save testing cost effectively, shortens detection time, ensure that the recall rate of weld defect.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that in prior art, pipe crawling device detects.
Fig. 2 is the schematic diagram that in prior art, center exposure detects.
Fig. 3 is the schematic diagram that in prior art, double-walled list shadow detects.
Fig. 4 is the structural representation of the utility model for center exposure in the gamma-ray interior transillumination support of Large Diameter Pipeline.
Fig. 5 is the structural representation of the utility model for hand lever in the gamma-ray interior transillumination support of Large Diameter Pipeline.
Fig. 6 is the structural representation of the utility model for exposure eccentric in the gamma-ray interior transillumination support of Large Diameter Pipeline.
Fig. 7 is the floor map of the utility model for the gamma-ray interior transillumination support of Large Diameter Pipeline.
Fig. 8 is part A enlarged view in Fig. 7.
Fig. 9 is part B enlarged view in Fig. 7.
Figure 10 is the exploded view of the utility model for runners in the gamma-ray interior transillumination support of Large Diameter Pipeline.
Figure 11 is the layout schematic diagram of airduct circumferential weld weld bond position.
Embodiment
Preferred embodiment of the present utility model is provided, to describe the technical solution of the utility model in detail below in conjunction with accompanying drawing.
Fig. 4 is the structural representation of the utility model for center exposure in the gamma-ray interior transillumination support of Large Diameter Pipeline.As shown in Figure 4, the utility model is used for the gamma-ray interior transillumination support 10 of Large Diameter Pipeline and comprises fixed support tube 11 and center exposure source conduit 12, and it is for fixing radiation source conduit.Center exposure source conduit 12 is arranged on the center position of fixed support tube 11, and is fixed as one mutual vertically between center exposure source conduit 12 here and fixed support tube 11, such as, adopt welding, to guarantee the stability in operating process.Fixed support runners is respectively equipped with at the two ends of fixed support tube 11.
Preferably, between the two ends of fixed support tube 11 and described fixed support runners, be also connected with flexible rod 14, make flexible rod 14 stretch along fixed support tube 11 and locate.Here all right welded nut of flexible rod 14 head and the tail, is convenient to spreading.
Preferably, one end that described fixed support runners comprises the first connected element 13 and one-way wheel 15, first connected element 13 is connected with fixed support tube 11, and the other end is connected with one-way wheel 15.One-way wheel 15 is adopted only to scroll up side parallel with axle in pipeline 20 herein.
In addition, be fixed with hand lever fixed tube 17 in the lower end of center exposure source conduit 12, in hand lever fixed tube 17, be provided with hand lever.
Fig. 5 is the structural representation of the utility model for hand lever in the gamma-ray interior transillumination support of Large Diameter Pipeline.As shown in Figure 5, described hand lever comprises interconnective rotating shaft 171 and handle 172, and the end of rotating shaft 171 is provided with fastening positioning element 173.
Fig. 6 is the structural representation of the utility model for exposure eccentric in the gamma-ray interior transillumination support of Large Diameter Pipeline.Fig. 7 is the floor map of the utility model for the gamma-ray interior transillumination support of Large Diameter Pipeline.As shown in Figure 6 and Figure 7, interior transillumination support 30 also comprises rotational support pipe 31 and eccentric exposure source pezzer's catheter,mushroom cathete 32.Rotational support pipe 31 is connected with fixed support tube 11 side by side by the fastening positioning element 173 (as shown in Figure 5) of rotating shaft 171 (as shown in Figure 5) end, can rotate to make rotational support pipe 31 along rotating shaft 171.Fastening positioning element 173 can adopt the bolt of cross herein.Be connected with eccentric exposure source pezzer's catheter,mushroom cathete 32 in one end of rotational support pipe 31, the other end is fixed with rotational support runners, and eccentric exposure source pezzer's catheter,mushroom cathete 32 is for fixing radiation source conduit 37.
Said structure can be the rotation providing source power of interior transillumination support 30 during eccentric exposure by the rotating shaft 171 of described hand lever with coordinating of fastening positioning element 173, thus ensureing the rotation precision of rotational support pipe 31, handle 172 can provide driving force for whole interior transillumination support 30.
Especially, one end of rotational support pipe 31 is connected with eccentric exposure source pezzer's catheter,mushroom cathete 32 by eccentric arm 33, is connected between eccentric arm 33 and rotational support pipe 31 by flexible rod 34.Similarly, the other end of rotational support pipe 31 is connected with described rotational support runners by flexible rod 34.
Here one end that described rotational support runners comprises the second connected element 35 and universal wheels 36, second connected element 35 is connected with rotational support pipe 31, and the other end is connected with universal wheels 36.The side that universal wheels 16 can be parallel with vertical with axle in pipeline 20 is adopted to scroll up herein.
Fig. 8 is part A enlarged view in Fig. 7.Fig. 9 is part B enlarged view in Fig. 7.Figure 10 is the exploded view of the utility model for runners in the gamma-ray interior transillumination support of Large Diameter Pipeline.Composition graphs 8 and Figure 10, in described fixed support runners, the first connected element 13 comprises spring base 131, constrictor 132, spring 133 and spring seat 134.Constrictor 132 is set in spring base 131, and one end of constrictor 132 is connected with flexible rod 14, can adopt the fastening constrictor 132 of bolt 40 and flexible rod 14 here.The other end of constrictor 132 is against one end of spring 133 in spring base 131, and the other end of such spring 133 is against spring seat 134, and the outside of spring seat 134 is connected with one-way wheel 15.The use of spring 133 can make one-way wheel 15 be close to the tube wall of pipeline 20.
In like manner, in described rotational support runners, the second connected element 35 has the mechanism identical with the first connected element 13, and its difference is only that the outside of corresponding spring seat is connected with universal wheels 36.
As shown in Figure 9, flexible rod 14 is plugged in fixed support tube 11, makes flexible rod 14 can move to suitable position at fixed support tube 11, is then positioned in fixed support tube 11 by flexible rod 14 by fixed component 18.In like manner, flexible rod 34 is adopted and is connected with rotational support pipe 31 in a like fashion.
According to the description of said structure, when transillumination support 30 carries out center exposure in adopting, flexible rod 14 is received on described fixed support runners, then inserts in fixed support tube 11, ensure that center exposure source conduit 12 is in central position.Then source conduit is stretched in center exposure source conduit 12 fixing, connect hand lever, make source be in the central position of section of weld joint to promote interior transillumination support 30.Finally, fixing hand lever and source pigtail conduit, can carry out center exposure.
When transillumination support 30 in adopting carries out bias exposure, only rotational support pipe 31 need be loaded onto.Ensure that central source pezzer's catheter,mushroom cathete is in central position, stretched into by source conduit 37 in eccentric exposure source pezzer's catheter,mushroom cathete 32 fixing, be connected firmly hand lever, promotes support and make source be in position directly over Pian Wei center.Finally, fixing hand lever and source pigtail, the conversion that rotary motion support tube 31 completes sheet position can carry out bias exposure, and the simple operation of this interior transillumination support is efficient.
Figure 11 is the layout schematic diagram of airduct circumferential weld weld bond position.
In the AP1000 type nuclear power of reality, there is numerous large-diameter pipe needing to carry out radiographic inspection.But in installation process, have some and meet center exposure or eccentric exposure technique requirement.Wherein due to some cause specific, personnel as too little in head opening cannot enter or have harmful gas etc. in container, the large-diameter pipe that the personnel of being not suitable for enter, the double-walled list shadow technology that the exposure time can only be selected very long.
Be used for the gamma-ray interior transillumination support of Large Diameter Pipeline by the utility model and can carry out center or eccentric exposure to such weld seam, evade flaw detection hole problem.Described interior transillumination support and photograph ratio of passing through inside, can reduce the intensity of externals stray line effectively, reduces the radiation absorbed dose of operating personnel, ensures the safety of personnel.It makes use of the center exposure of interior transillumination support, more accurately can ensure that the geometry center of circle of source and circumferential weld overlaps.In eccentric exposure process, focal length can be kept everywhere equal, ensure that photographic density and remolding sensitivity are comparatively even, greatly reduce due to the uneven waste paper rate of blackness, which offers a saving the cost of film making.By facts have proved the exposure of each pipeline, interior transillumination support of the present utility model can improve the work efficiency of ray operation, meets quality and the safety requirement of different tube diameters radiographic inspection.
Described interior transillumination support can complete the weld seam detection that general interior transillumination support can complete, the weld seam detection that a lot of general interior transillumination support cannot be implemented can also be completed, such as: the slot storage tank circumferential weld that internal diameter is larger, there is the vertically-supplying air pipe ring weld seam of some height, there is the vertical main steam line circumferential weld of some height, here for vertically-supplying air pipe ring weld seam.
Figure 11 is the layout schematic diagram of airduct circumferential weld weld bond position.As shown in figure 11, airduct pipe welding port specification is (Φ 700 × 23.7) mm, and weld bond 41,42,43,44 is airduct hog ring weld seam, and wherein weld bond 41 is from mouth of pipe 2.5m, overhead 3.5m.General welding sequence is first prefabricated weld bond 41 and weld bond 44, detects and adopts center exposure technology.Dock weld bond 42 and weld bond 43 again, detect and adopt double-walled list shadow technology.Part constrained position is first weld weld bond 42 and weld bond 43, detects and adopts center exposure technology.At docking weld bond 41 and weld bond 44, due to weld bond 41 and weld bond 44 from the mouth of pipe too away from, and pipeline axial is vertical direction, and personnel enter difficulty, are also not easy to set up platform and enter, and detection can only adopt double-walled list shadow technology.
Be used for the gamma-ray interior transillumination support of Large Diameter Pipeline according to the utility model, on ground, exposure support can be supportted Weld pipe mill position and fixedly carry out center exposure.For weld bond 41, to be the center exposure of the Gamma ray source of 30Ci and double-walled list shadow needed time be intensity: adopt during center exposure and need sheet figure place to be 12, the single exposure time is 10min, and cumulative time is 20min, exposes at twice.Adopting during double-walled list shadow needs sheet figure place to be 12, and the single exposure time is 140min, and cumulative time is 1680min (time herein calculated is the simple exposure time, does not comprise the arrangement of film time).
Obviously, employing double-walled list shadow needed time is 50 times of center exposure needed time, and increases with the increase of wall thickness.In addition, in adopting, transillumination support can shorten the exposure time greatly, increases work efficiency, and can reduce the dosage absorbed in working procedure.
In sum, the utility model is used for the elongated bar combination that the gamma-ray interior transillumination support of Large Diameter Pipeline adopts support tube and different length, regulate exposure focal length, the radiographic inspection of the circumferential weld of different tube diameters can be met, centered by can dismantling, expose support and eccentric exposure support simultaneously.Described interior transillumination support is not only applicable to the pipeline of downward opening, is applicable to upward opening, the inaccessible pipeline of personnel, as main steam line assembled straight up yet.
Although the foregoing describe embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present utility model and essence, can make various changes or modifications to these mode of executions, but these change and amendment all falls into protection domain of the present utility model.
Claims (10)
1. one kind for the gamma-ray interior transillumination support of Large Diameter Pipeline, it is characterized in that, described interior transillumination support comprises fixed support tube and center exposure source conduit, described center exposure source conduit is arranged on the center position of described fixed support tube, and described center exposure source conduit and described fixed support tube are fixed as one mutual vertically, the two ends of described fixed support tube are respectively equipped with fixed support runners, and described center exposure source conduit is used for fixing radiation source conduit.
2. as claimed in claim 1 for the gamma-ray interior transillumination support of Large Diameter Pipeline, it is characterized in that, also be connected with flexible rod between the two ends of described fixed support tube and described fixed support runners, make described flexible rod stretch along described fixed support tube and locate.
3. as claimed in claim 2 for the gamma-ray interior transillumination support of Large Diameter Pipeline, it is characterized in that, described fixed support runners comprises the first connected element and one-way wheel, and one end of described first connected element is connected with described fixed support tube, and the other end is connected with described one-way wheel.
4. as claimed in claim 3 for the gamma-ray interior transillumination support of Large Diameter Pipeline, it is characterized in that, described first connected element comprises spring base, constrictor, spring and spring seat;
Described constrictor is set in described spring base, one end of described constrictor is connected with described flexible rod, the other end is against one end of spring in described spring base, and the other end of described spring is against described spring seat, and the outside of described spring seat is connected with described one-way wheel.
5. as claimed in claim 1 for the gamma-ray interior transillumination support of Large Diameter Pipeline, be characterised in that, the lower end of described center exposure source conduit is fixed with hand lever fixed tube, is provided with hand lever in described hand lever fixed tube.
6. as claimed in claim 5 for the gamma-ray interior transillumination support of Large Diameter Pipeline, it is characterized in that, described hand lever comprises interconnective rotating shaft and handle, and the end of described rotating shaft is provided with fastening positioning element.
7. as claimed in claim 6 for the gamma-ray interior transillumination support of Large Diameter Pipeline, it is characterized in that, described interior transillumination support also comprises rotational support pipe and eccentric exposure source pezzer's catheter,mushroom cathete, described rotational support pipe is connected with described fixed support tube side by side by the fastening positioning element of described roller end, to make described rotational support pipe can along described axis of rotation;
One end of described rotational support pipe is connected with described eccentric exposure source pezzer's catheter,mushroom cathete, and the other end is fixed with rotational support runners, and described eccentric exposure source pezzer's catheter,mushroom cathete is used for fixing radiation source conduit.
8. as claimed in claim 7 for the gamma-ray interior transillumination support of Large Diameter Pipeline, it is characterized in that, one end of described rotational support pipe is connected with described eccentric exposure source pezzer's catheter,mushroom cathete by eccentric arm, and the other end is connected with described rotational support runners by flexible rod.
9. as claimed in claim 8 for the gamma-ray interior transillumination support of Large Diameter Pipeline, it is characterized in that, described rotational support runners comprises the second connected element and universal wheels, and one end of described second connected element is connected with described rotational support pipe, and the other end is connected with described universal wheels.
10. as claimed in claim 9 for the gamma-ray interior transillumination support of Large Diameter Pipeline, it is characterized in that, described second connected element comprises spring base, constrictor, spring and spring seat;
Described constrictor is set in described spring base, one end of described constrictor is connected with described flexible rod, the other end is against one end of spring in described spring base, and the other end of described spring is against described spring seat, and the outside of described spring seat is connected with described universal wheels.
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| CN201420752396.0U CN204387574U (en) | 2014-12-03 | 2014-12-03 | For the gamma-ray interior transillumination support of Large Diameter Pipeline |
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| CN201420752396.0U CN204387574U (en) | 2014-12-03 | 2014-12-03 | For the gamma-ray interior transillumination support of Large Diameter Pipeline |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105824116A (en) * | 2016-03-15 | 2016-08-03 | 东北电力大学 | Power plant pipeline detection endoscope with arbitrary positioning function |
| CN106970096A (en) * | 2017-05-22 | 2017-07-21 | 上海电气核电设备有限公司 | Nozzle inner wall bias exposure support frame |
| CN108020567A (en) * | 2017-11-20 | 2018-05-11 | 首都航天机械公司 | A kind of tank circumferential weld X-ray automated detection system |
| CN110018185A (en) * | 2019-04-04 | 2019-07-16 | 岭澳核电有限公司 | Nuclear power station weld 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 |
| CN110421490A (en) * | 2019-06-21 | 2019-11-08 | 中石化石油机械股份有限公司沙市钢管分公司 | A kind of adjustable support frame |
| CN112346110A (en) * | 2020-10-30 | 2021-02-09 | 中国核工业第五建设有限公司 | Pre-exposure cassette for handwriting identification of automatic ray detection system |
| CN112489837A (en) * | 2020-11-27 | 2021-03-12 | 中广核检测技术有限公司 | Sheet distribution device and method for in-service inspection of claw gasket of control rod drive mechanism |
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2014
- 2014-12-03 CN CN201420752396.0U patent/CN204387574U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105824116A (en) * | 2016-03-15 | 2016-08-03 | 东北电力大学 | Power plant pipeline detection endoscope with arbitrary positioning function |
| CN106970096A (en) * | 2017-05-22 | 2017-07-21 | 上海电气核电设备有限公司 | Nozzle inner wall bias exposure support frame |
| CN106970096B (en) * | 2017-05-22 | 2023-12-01 | 上海电气核电设备有限公司 | Eccentric exposure support frame for inner wall of connecting pipe |
| CN108020567A (en) * | 2017-11-20 | 2018-05-11 | 首都航天机械公司 | A kind of tank circumferential weld X-ray automated detection system |
| CN108020567B (en) * | 2017-11-20 | 2021-02-09 | 首都航天机械公司 | Automatic X-ray detection system for storage box circular seam |
| CN110018185A (en) * | 2019-04-04 | 2019-07-16 | 岭澳核电有限公司 | Nuclear power station weld 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 |
| CN110421490A (en) * | 2019-06-21 | 2019-11-08 | 中石化石油机械股份有限公司沙市钢管分公司 | A kind of adjustable support frame |
| CN112346110A (en) * | 2020-10-30 | 2021-02-09 | 中国核工业第五建设有限公司 | Pre-exposure cassette for handwriting identification of automatic ray detection system |
| CN112489837A (en) * | 2020-11-27 | 2021-03-12 | 中广核检测技术有限公司 | Sheet distribution device and method for in-service inspection of claw gasket of control rod drive mechanism |
| CN112489837B (en) * | 2020-11-27 | 2024-04-02 | 中广核检测技术有限公司 | Sheet distributing device and method for in-service inspection of claw gaskets of control rod driving mechanism |
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