CN203641800U - Large-caliber gamma ray center exposure bracket - Google Patents
Large-caliber gamma ray center exposure bracket Download PDFInfo
- Publication number
- CN203641800U CN203641800U CN201320687774.7U CN201320687774U CN203641800U CN 203641800 U CN203641800 U CN 203641800U CN 201320687774 U CN201320687774 U CN 201320687774U CN 203641800 U CN203641800 U CN 203641800U
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- support
- strut
- center exposure
- ray center
- large diameter
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- 230000005251 gamma ray Effects 0.000 title claims abstract description 17
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 6
- 238000007689 inspection Methods 0.000 description 5
- 241001669679 Eleotris Species 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000659 freezing mixture Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model aims at providing a large-caliber gamma ray center exposure bracket which facilitates fixing a source and has the characteristics of stability and an adjustable focal distance. In order to achieve the purposes, the large-caliber gamma ray center exposure bracket is characterized by comprising a source conduit, and support components extending from at least two sides of the source conduit respectively, wherein each support component comprises a support pipe, a support rod and a support rod gasket; the support rods are in threaded connection with the support pipes to allow the whole length of the support components to be capable of being adjusted; and the support rod gaskets are connected with the tail ends of the support rods and contacted with pipe walls.
Description
Technical field
The utility model relates to engineering X-ray Testing Technology field, relates in particular to a kind of for reaching Ir-192 or the Se-75 class γ source ray center exposure tests support of circumferential weld.
Background technique
The support using while carrying out pipe fitting center exposure is at present often different in different occasions, there is no the support of unified specification, and common simple type support as shown in Figures 2 and 3.In Fig. 2, on I type support 7, support source 8, so that the weld seam of pipe fitting 6 is detected, I type support 7 has used sleeper and cushion block combination, by the cushion block size of focusing, makes source be fixed on home position and carries out center exposure.This exposure support shortcoming is that sleeper width fixes, the scope of back cushion piece adjusting focal length is little, need to constantly change sleeper and cushion block to the weld seam transillumination of different tube diameters, in addition, if focal length is too large, while shaking source, sleeper easily rocks, negative quality is had a certain impact, when serious, can collapse, cause useless sheet, so this support is only applicable to the radiographic inspection of medium caliber, not only inconvenience but also deficient in stability.
In Fig. 3, X-type support 7 is to use two planks mutually to intersect and order together, and foam pad agllutination closes, and is also by the cushion block size of focusing, and is that source 8 is fixed on home position and carries out center exposure.This support more has stability than I type support, but shortcoming is to expose, focus adjustment scope is little, is inconvenient to carry, and there is no versatility.
Model utility content
The purpose of this utility model is to provide a kind of Large Diameter Pipeline γ-ray center exposure support, and it is convenient to fixing source, and has stability and the adjustable feature of focal length.
For realizing the Large Diameter Pipeline γ-ray center exposure support of described object, be characterized in, comprise source conduit, at the source conduit supporting component that at least extend respectively both sides, each supporting component comprises support tube, strut and strut pad, the strut support tube that is threaded, so that the entire length of supporting component can regulate, strut pad is connected to the end of strut, for contacting tube wall.
Described Large Diameter Pipeline γ-ray center exposure support, its further feature is that described in two, supporting component is arranged in the bilateral symmetry of source conduit.
Described Large Diameter Pipeline γ-ray center exposure support, its further feature is that support tube outside screws in has clamping bolt, clamping bolt to withstand strut so that strut is fixed in support tube.
Described Large Diameter Pipeline γ-ray center exposure support, its further feature is that strut pad is circular arc.
Described Large Diameter Pipeline γ-ray center exposure support, its further feature is that strut pad is fixedly installed on strut end.
In the technical solution of the utility model, just can focus by the length that regulates supporting component, contact with tube wall by support pad, can obtain stable support, aforementioned brackets structure is small and exquisite, and people can complete operation, uses manpower and material resources sparingly, and simple in structure, compact size, weight is light, is easy to carry, be easy to dismounting, it can also meet the inclined tube of several angle weld seam detection.
Accompanying drawing explanation
The above and other feature of the present utility model, character and advantage are by by becoming more obvious below in conjunction with the description of drawings and Examples, wherein:
Fig. 1 is the main pseudosection of Large Diameter Pipeline γ-ray center exposure support in the utility model embodiment.
Fig. 2 is the working state schematic representation of existing I type exposure support.
Fig. 3 is the schematic diagram of the working state of existing X-type support.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is described in further detail; set forth in the following description more details so that fully understand the utility model; but the utility model obviously can be implemented with the multiple alternate manner that is different from this description; those skilled in the art can do similar popularization, deduction according to practical situations without prejudice to the utility model intension in the situation that, therefore should be with the content constraints of this specific embodiment protection domain of the present utility model.
The Large Diameter Pipeline of mentioning in this patent refers to that radius-thickness ratio meets the caliber of the pipeline in support adjustable extent of center transillumination technical requirements.
As shown in Figure 1, Large Diameter Pipeline γ-ray center exposure support comprises source conduit 1, at source conduit 1 supporting component that at least extend respectively both sides, each supporting component comprises support tube 11, strut 31 and strut pad 41, strut 31 support tube 11 that is threaded, so that the entire length of supporting component can regulate, strut pad 41 is connected to the end of strut 31, for contacting tube wall.In Fig. 1, the supporting component of the left and right sides can be symmetrical arranged, and also can asymmetricly arrange, but the length of the two generally equates, so that the position that is source by source conduit is fixed on the center of circle of pipe fitting.
Source conduit 1 also can fix source by clamping bolt 5.
Previous embodiment adopts the strut combination of support tube and different length, regulates exposure focal length, meets the radiographic inspection of the circumferential weld of different tube diameters, and supporting structure is simple simultaneously, is convenient for carrying use.Fixing by what support, can prevent source freely rotating in the course of the work.
In AP1000 Nuclear power project, there are numerous large-diameter pipes that need to carry out radiographic inspection, all to use center exposure support to carry out the fixing of γ source, this support has enough strength and stiffness, installation is stablized firm, be difficult for mobile, the power that can bear He Yao source, source time, all directions produce, improves film making success rate.By the exposure practice to each pipeline, prove that the center of circle that can guarantee more accurately source and circumferential weld overlaps, focal length is equated everywhere, guarantee that photographic density and remolding sensitivity are more even, meet safety and the quality requirement of different tube diameters radiographic inspection.
The supporting structure of previous embodiment is small and exquisite, and people can complete operation, uses manpower and material resources sparingly.
Previous embodiment simple in structure, compact size, weight is light, is easy to carry, and is easy to dismounting.
Meeting of previous embodiment has the inclined tube of several angle weld seam detection.
Previous embodiment is applied in a lot of pipeline center's exposures, as airduct circumferential weld, main steam line circumferential weld, main pipe loop weld seam etc.Wherein with main pipe loop weld seam application typical case the most.In model utility people's practice, main pipeline is made up of A loop and B loop, every loop comprises a pressurized container (RV), a steam generator (SG), two reactor coolant pumps and a freezing mixture main pipeline heat pipe section, two cold legs, heat pipe section weld bond specification is φ 952.5 × 82.6mm, and cold leg weld bond specification is φ 688.85 × 65mm.Main pipeline has 12 weld bonds, wherein 4 heat pipe section weld bonds, 8 cold leg weld bonds.4 final weld bonds of heat pipe section weld bond need carry out center exposure radiographic inspection, two weld bonds need to enter by RV chamber, other two weld bonds need to enter by SG chamber, design has strict turbidity test requirement to SG and RV chamber interior, in addition two weld bonds of the nearly SG side of heat pipe section weld bond are almost horizontal by 70 ° of angles, can not guarantee the turbidity test requirement in SG and RV chamber by conventional bracket, waste time and energy again, be difficult to fix.The center exposure supporting structure of previous embodiment is simple, compact size, clean light, be easy to handling, when use, can guarantee the turbidity test requirement in SG and RV chamber, can chamber indoor equipment and tube wall not polluted and be scratched.Therefore the center exposure of previous embodiment has not only been saved manpower, also shortened the layout time in testing process, improve detection efficiency, particularly SG side, pipeline section is almost horizontal by 70 ° of angles, downward ladder shakiness, platform space is narrow and small, many people are just how a dangerous and inconvenient, adopt center exposure support one people just can complete transillumination and arrange, make to detect and carry out in order.
In previous embodiment, describe as example although be furnished with respectively supporting component take left and right, in other embodiments, conduit three supporting components that distribute in former source are also fine.
Although the utility model with preferred embodiment openly as above, it is not for limiting the utility model, and any those skilled in the art, not departing from spirit and scope of the present utility model, can make possible variation and modification.Therefore, every content that does not depart from technical solutions of the utility model, any modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, within all falling into the protection domain that the utility model claim defines.
Claims (5)
1. Large Diameter Pipeline γ-ray center exposure support, it is characterized in that, comprise source conduit, at the source conduit supporting component that at least extend respectively both sides, each supporting component comprises support tube, strut and strut pad, the strut support tube that is threaded, so that the entire length of supporting component can regulate, strut pad is connected to the end of strut, for contacting tube wall.
2. Large Diameter Pipeline γ-ray center exposure support as claimed in claim 1, is characterized in that, described in two, supporting component is arranged in the bilateral symmetry of source conduit.
3. Large Diameter Pipeline γ-ray center exposure support as claimed in claim 1, is characterized in that, support tube outside screws in has clamping bolt, clamping bolt to withstand strut so that strut is fixed in support tube.
4. Large Diameter Pipeline γ-ray center exposure support as claimed in claim 1, is characterized in that, strut pad is circular arc.
5. Large Diameter Pipeline γ-ray center exposure support as claimed in claim 1, is characterized in that, strut pad is fixedly installed on strut end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320687774.7U CN203641800U (en) | 2013-11-01 | 2013-11-01 | Large-caliber gamma ray center exposure bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320687774.7U CN203641800U (en) | 2013-11-01 | 2013-11-01 | Large-caliber gamma ray center exposure bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641800U true CN203641800U (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320687774.7U Expired - Lifetime CN203641800U (en) | 2013-11-01 | 2013-11-01 | Large-caliber gamma ray center exposure bracket |
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| Country | Link |
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| CN (1) | CN203641800U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931295A (en) * | 2017-04-24 | 2017-07-07 | 代海波 | A kind of thermal power plant X-ray and gamma ray inspection fixed support |
| 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 |
-
2013
- 2013-11-01 CN CN201320687774.7U patent/CN203641800U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931295A (en) * | 2017-04-24 | 2017-07-07 | 代海波 | A kind of thermal power plant X-ray and gamma ray inspection fixed support |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |