CN204045215U - The syndeton of reactor pressure vessel and main pipeline - Google Patents
The syndeton of reactor pressure vessel and main pipeline Download PDFInfo
- Publication number
- CN204045215U CN204045215U CN201420551296.1U CN201420551296U CN204045215U CN 204045215 U CN204045215 U CN 204045215U CN 201420551296 U CN201420551296 U CN 201420551296U CN 204045215 U CN204045215 U CN 204045215U
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- Prior art keywords
- pressure vessel
- main pipeline
- safe end
- locating piece
- solder layer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model discloses the syndeton of reactor pressure vessel and main pipeline, comprise the safe end that pressure vessel imports and exports adapter, main pipeline and tubulose, wherein, safe end two ends are imported and exported with pressure vessel respectively and to be taken over and main pipeline is connected, be provided with the first solder layer between pressure vessel inlet/outlet pipe and safe end, between main pipeline and safe end, be provided with the second solder layer.The outside surface of safe end is provided with polylith locating piece, and polylith locating piece is evenly distributed on the same plane perpendicular to safe end axis along excircle.When the utility model carries out radioscopy, be that benchmark can Fast Installation cassette bracket and film cassette with locating piece, be convenient to accurately locate attachment weld between reactor pressure vessel and main pipeline in inservice inspection and maintenance process, effectively shorten checking and servicing time, increase work efficiency.
Description
Technical field
The utility model relates to reactor pressure vessel, specifically the syndeton of reactor pressure vessel and main pipeline.
Background technology
Reactor pressure vessel is one of key equipment of PWR nuclear power plant, plays and holds core components, in-pile component, the effect of parts such as supporting driving mechanism etc., and by connecting to form the pressure boundary of reactor coolant loop with main pipeline.Reactor pressure vessel is connected by the mode of welding with main pipeline, and therefore attachment weld is also the ingredient of pressure boundary, needs to carry out nondestructive test to it with during maintenance in nuclear power plant's inservice inspection.
Because the reactor pressure vessel of nuclear power plant's operation phase has radioactivity, the near zone of reactor pressure vessel and main pipe welding seam is high dose area, when it is tested, by operating personnel, partial test equipment and aid closely need be arranged on commissure, then adopt the mode of long-distance remote control to test.Adopt radiographic source to be placed in adapter center at present when testing to attachment weld, the film cassette of built-in film is installed on the center exposure method outside adapter.Wherein, need tack weld when film cassette is installed, namely the installation of film cassette should be able to ensure the complete covering weld seam of film and need the region of inspection around.Determine the position of weld seam and auxiliary mould during in order to check, generally now arrange steel seal at reactor pressure vessel outside surface, the position when installing film cassette with reference to steel seal is installed.
Weld seam mark steel seal adopts circle or spherical low stress drift to develop and print, and the height of character and numeral is about 8mm, and the degree of depth is no more than 0.6mm.This mark needs to indicate the position (i.e. the position of weld edge and distance) of minimum reference number and the sense of rotation of numerical value and radiographic inspection reference marker and spacing, and it content comprised is more, is usually made up of several groups of numerals and round dot mark.First the implication of every content data representative of steel impression mark is identified when film cassette is installed, distance due to steel seal mark is that it arrives the distance of weld edge, inconsistent with the mounting distance of cassette bracket, therefore the position of onsite application cassette bracket first must be gone out according to mark distance transform, try again temporary marker, the installation site of cassette bracket could be determined, simultaneously because the installation of inspection machine and aid may block steel seal, turn increase installation difficulty.Along with the increase of power plant's working time, equipment surface state is deteriorated gradually, and site space is narrow and small in addition, bad environments, and closely identification marking all exists certain difficulty.
Adopt existing mode tack weld, after equipment long-play, the sharpness of steel seal reduces, and the installation of inspection machine and aid may block steel seal, and this all can affect efficiency and the precision of tack weld, and then maintenance and inspection progress can be affected, and be unfavorable for judging weldquality.Adopt existing mode installation process relative complex, need operating personnel at high dose area stay longer, be unfavorable for operator safety.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide the syndeton of a kind of reactor pressure vessel and main pipeline, it is convenient to locate fast and accurately the attachment weld between reactor pressure vessel and main pipeline in inservice inspection and maintenance process, effectively can shorten inspection and servicing time, and then can operating efficiency be improved, reduce personal radiation dose.
The utility model solves the problems of the technologies described above and is achieved through the following technical solutions: the syndeton of reactor pressure vessel and main pipeline, comprise pressure vessel and import and export adapter, the safe end of main pipeline and tubulose, described safe end two ends are imported and exported with pressure vessel respectively and to be taken over and main pipeline is connected, the first solder layer is provided with between described pressure vessel inlet/outlet pipe and safe end, the second solder layer is provided with between main pipeline and safe end, the outside surface of described safe end is provided with polylith locating piece, polylith locating piece is evenly distributed on the same plane perpendicular to safe end axis along excircle.
Further, the spacing of described locating piece to the first solder layer center line and the second solder layer center line is 45 ~ 58mm.There is certain distance in locating piece of the present utility model and the first weld layer center line and the second solder layer center line, can avoid impacting pressure vessel manufacturing, installation and operation.
Further, the solder of described first solder layer adopts nickel-base material or stainless steel material, and the solder of described second solder layer adopts stainless steel material.
Locating piece size of the present utility model is less and processing mode is flexible, can process with safe end one, also can manufacture at reactor pressure vessel is fixed on safe end by welding manner latter stage, in order to ensure the structural strength of locating piece, further, described locating piece and safe end become one.
In sum, the utility model has following beneficial effect: the outside surface of (1) the utility model safe end is provided with polylith locating piece, wherein, polylith locating piece is evenly distributed on the same plane perpendicular to safe end axis along excircle, when the utility model carries out radioscopy, radiographic source is arranged on the center of adapter that pressure vessel inlet/outlet pipe, safe end and main pipeline are formed, and is installing film cassette and cassette bracket and other auxiliary moulds by inspection position.Installing cassette bracket is the first step of tack weld, now using locating piece as positioning datum, is stitched together by each assembly of cassette bracket, makes cassette bracket edge near locating piece, most important positioning work when namely completing installation.So, the utility model is under the effect of locating piece, be conducive to the position that reviewer determines cassette bracket fast, complete rapidly the installation of cassette bracket and film cassette, improve the precision of installation, and the weld seam of the first solder layer or the second solder layer can be located fast and accurately, not only save the supervision time, improve work efficiency, and the time that minimizing radioscopy personnel work in high radioactive area, the radiation that effective reduction personnel are subject to.
(2) the utility model is after radioscopy operation, locating piece leaves image on radiographic film, the measured data of manufacture, installation phase first solder layer or the second solder layer weld seam can be combined according to this image during evaluation egative film, accurate judgement weld seam and border thereof, contribute to the judgement of assay.
(3) locating piece of the present utility model and safe end integrated, stable existence within the full phase in longevity of the equipment such as reactor pressure vessel and main pipeline, significantly can't wear down along with the increase of power plant working time, its serviceable life is identical with equipment, so, the one-hundred-percent inspection needs in power plant's phase in longevity can be met.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model specific embodiment;
Fig. 2 is the structure for amplifying schematic diagram at A place in Fig. 1;
Fig. 3 is the structural representation after the utility model specific embodiment installs cassette bracket and film cassette.
Name in accompanying drawing corresponding to Reference numeral is called: 1, pressure vessel imports and exports adapter, the 2, first solder layer, 3, safe end, 4, main pipeline, and the 5, second solder layer, 6, locating piece, 7, radiographic source, 8, film cassette, 9, cassette bracket.
Embodiment
Below in conjunction with embodiment and accompanying drawing, detailed description is further done to the utility model, but embodiment of the present utility model is not limited thereto.
Embodiment:
As shown in Figure 1 and Figure 2, the syndeton of reactor pressure vessel and main pipeline, comprise the safe end 3 that pressure vessel imports and exports adapter 1, main pipeline 4 and tubulose, wherein, safe end 3 two ends import and export adapter 1 respectively by the mode of welding with pressure vessel and main pipeline 4 is connected, the first solder layer 2 is provided with between pressure vessel inlet/outlet pipe 1 and safe end 3, the second solder layer 5 is provided with between main pipeline 4 and safe end 3, in the present embodiment, the solder of the first solder layer 2 adopts nickel-base material or stainless steel material, and the solder of the second solder layer 5 adopts stainless steel material.
The outside surface of the safe end 3 of the present embodiment is provided with polylith locating piece 6, and wherein, polylith locating piece 6 is evenly distributed on the same plane perpendicular to safe end 3 axis along safe end 3 excircle.Radioscopy scope can be covered completely to make film cassette 8, consider the reserved location of auxiliary mould and film edge, avoid the manufacture of locating piece 6 pairs of reactor pressure vessels, installation and application to impact, locating piece 6 to the first solder layer 2 center line of the present embodiment and the spacing of the second solder layer 5 center line are 45 ~ 58mm simultaneously.In order to ensure the structural strength of locating piece 6, locating piece 6 and the safe end 3 of the present embodiment become one, and namely locating piece 6 is made up of safe end 3 evagination.
as shown in Figure 3, during the present embodiment inservice inspection, when radioscopy is carried out to the weld seam of the first solder layer 2 and the second solder layer 5, radiographic source 7 is placed in the adapter center that pressure vessel import and export adapter 1, safe end 3 and main pipeline 4 are formed, with locating piece 6 for benchmark installs cassette bracket 9 and film cassette 8, and then realize the location of weld seam.Wherein, after tack weld, the complete covering weld seam of film and surveyed area in film cassette 8.
As mentioned above, the utility model can be realized preferably.
Claims (4)
1. the syndeton of reactor pressure vessel and main pipeline, it is characterized in that, comprise pressure vessel and import and export adapter (1), the safe end (3) of main pipeline (4) and tubulose, described safe end (3) two ends are imported and exported with pressure vessel respectively and are taken over (1) and main pipeline (4) is connected, the first solder layer (2) is provided with between described pressure vessel inlet/outlet pipe (1) and safe end (3), the second solder layer (5) is provided with between main pipeline (4) and safe end (3), the outside surface of described safe end (3) is provided with polylith locating piece (6), polylith locating piece (6) is evenly distributed on the same plane perpendicular to safe end (3) axis along excircle.
2. the syndeton of reactor pressure vessel according to claim 1 and main pipeline, is characterized in that, described locating piece (6) is 45 ~ 58mm to the spacing of the first solder layer (2) center line and the second solder layer (5) center line.
3. the syndeton of reactor pressure vessel according to claim 1 and main pipeline, is characterized in that, the solder of described first solder layer (2) adopts nickel-base material or stainless steel material, and the solder of described second solder layer (5) adopts stainless steel material.
4. according to the syndeton of the reactor pressure vessel in claims 1 to 3 described in any one and main pipeline, it is characterized in that, described locating piece (6) and safe end (3) become one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551296.1U CN204045215U (en) | 2014-09-24 | 2014-09-24 | The syndeton of reactor pressure vessel and main pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551296.1U CN204045215U (en) | 2014-09-24 | 2014-09-24 | The syndeton of reactor pressure vessel and main pipeline |
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| Publication Number | Publication Date |
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| CN204045215U true CN204045215U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420551296.1U Active CN204045215U (en) | 2014-09-24 | 2014-09-24 | The syndeton of reactor pressure vessel and main pipeline |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107093481A (en) * | 2017-06-01 | 2017-08-25 | 中国核工业第五建设有限公司 | The method for making in-pile component positioning insert in AP1000 nuclear power stations |
| CN112059465A (en) * | 2020-09-30 | 2020-12-11 | 上海电气核电设备有限公司 | Connecting structure for reactor container and welding process |
| 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 |
-
2014
- 2014-09-24 CN CN201420551296.1U patent/CN204045215U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107093481A (en) * | 2017-06-01 | 2017-08-25 | 中国核工业第五建设有限公司 | The method for making in-pile component positioning insert in AP1000 nuclear power stations |
| CN112059465A (en) * | 2020-09-30 | 2020-12-11 | 上海电气核电设备有限公司 | Connecting structure for reactor container and welding process |
| 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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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |