CN111354490A - Centering device suitable for pressurized water reactor pressure vessel top cap repacking - Google Patents
Centering device suitable for pressurized water reactor pressure vessel top cap repacking Download PDFInfo
- Publication number
- CN111354490A CN111354490A CN201811574844.1A CN201811574844A CN111354490A CN 111354490 A CN111354490 A CN 111354490A CN 201811574844 A CN201811574844 A CN 201811574844A CN 111354490 A CN111354490 A CN 111354490A
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- Prior art keywords
- pressure vessel
- top cover
- camera
- control box
- assembly
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000012857 repacking Methods 0.000 title claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000005855 radiation Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
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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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention relates to the technical field of reactor maintenance, and particularly discloses a centering device suitable for reloading a top cover of a pressurized water reactor pressure vessel. The device comprises a display terminal, a control box assembly and a camera assembly, wherein the control box assembly and the camera assembly are both arranged on a pressure vessel top cover lifting appliance, and the camera assembly is arranged right above a guide post corresponding to a pressure vessel top cover unthreaded hole; the display terminal is connected with the control box assembly, and position signals of the camera assembly detection guide posts from the pressure vessel top cover unthreaded holes are acquired in real time through the control box assembly, and the square movement of the pressure vessel top cover unthreaded holes to the guide posts is given. The device can provide centering guidance for the top cover of the pressurized water reactor pressure vessel; the device can reduce the radiation dose of operators in the process of back-loading the top cover of the pressure container; simultaneously, reduce the risk of pressure vessel top cap repacking in-process collision guide post.
Description
Technical Field
The invention belongs to the technical field of reactor maintenance, and particularly relates to a centering device suitable for reloading a top cover of a pressurized water reactor pressure vessel.
Background
The pressurized water reactor needs to open the top cover of the pressure vessel in the overhaul process, fuel assemblies are reloaded and the like, and the top cover of the pressure vessel needs to be guided and positioned on the flange surface of the pressure vessel through three guide posts arranged on the flange surface of the pressure vessel by means of annular hoisting at the later stage of overhaul.
In the process of back-assembling the pressure vessel top cover, 3 operators are needed to go down to the flange surface of the reactor core water tank from a platform of 20m of a nuclear island R plant, whether the corresponding unthreaded holes of the guide columns and the pressure vessel top cover are aligned accurately is observed through naked eyes, and then the operators in the water tank feed observation information back to the ring crane commander. In this process, it is great that there are 3 operating personnel in the reactor core pond to receive the radiation, and 3 people operating personnel macroscopical observations exist the deviation, and 3 operating personnel will observe the condition and transmit for the ring and hang the commander asynchronous simultaneously, and the ring that is not convenient for hangs the commander and judges the skew condition between pressure vessel top cap and 3 guide posts.
Disclosure of Invention
The invention aims to provide a centering device suitable for back-assembling a top cover of a pressurized water reactor pressure vessel, which can qualitatively detect the deviation condition between a bolt hole and a guide column in real time so as to provide guidance for a ring crane commander.
The technical scheme of the invention is as follows: a centering device suitable for repacking a pressurized water reactor pressure vessel top cover comprises a display terminal, a control box assembly and a camera assembly, wherein the control box assembly and the camera assembly are both arranged on a pressure vessel top cover lifting appliance, and the camera assembly is arranged right above a guide column corresponding to a pressure vessel top cover light hole; the display terminal is connected with the control box assembly, and position signals of the camera assembly detection guide posts from the pressure vessel top cover unthreaded holes are acquired in real time through the control box assembly, and the square movement of the pressure vessel top cover unthreaded holes to the guide posts is given.
The camera assembly comprises a cross laser emitter, a camera and a mounting bracket I, wherein the camera is fixed on a lifting appliance annular I-shaped steel on a lifting appliance of the top cover of the pressure vessel through the mounting bracket I, and is positioned right above a guide post corresponding to a light hole of the top cover of the pressure vessel; and an annular cross laser emitter is also arranged on the edge of the camera and used for emitting a cross annular laser target for indicating centering.
The control box assembly comprises a battery pack, a router and a mounting bracket II, wherein the battery pack and the router which are arranged in the control box assembly shell are fixed on a lifting appliance beam I-steel in the pressure container top cover lifting appliance through the mounting bracket II.
The control box assembly is connected with the camera assembly through a cable, and the battery pack supplies power to the router, the camera in the camera assembly and the annular cross laser transmitter; and a router in the control box assembly exchanges the video signal of the acquisition camera with the display terminal in a wired or wireless mode.
The display terminal can display the cross annular laser target formed by the cross laser emitter, the position of the camera assembly is adjusted after the camera assembly is started, the monitoring picture of the display terminal displays that the cross annular laser target is in the center, and when the top cover of the pressure container is installed back, the end part of the guide column is not completely centered on the cross annular laser target, the display terminal can recognize the deviation square and display the moving indication.
The display terminal is installed on a 20m platform.
The invention has the following remarkable effects: the centering device suitable for the top cover back-assembly of the pressurized water reactor pressure vessel can provide centering guide for the top cover back-assembly of the pressurized water reactor pressure vessel, can provide centering pictures of a pipe hole of the top cover of the pressure vessel and a guide column and provide offset guide between the pipe hole and the guide column; the device can reduce the radiation dose of operators in the process of back-loading the top cover of the pressure container; simultaneously, reduce the risk of pressure vessel top cap repacking in-process collision guide post.
Drawings
FIG. 1 is a schematic structural diagram of a centering device suitable for refilling a top cover of a pressurized water reactor pressure vessel according to the present invention;
FIG. 2 is a schematic diagram of the camera assembly of FIG. 1;
FIG. 3 is a schematic diagram of the control box assembly of FIG. 1;
FIG. 4 is a schematic illustration showing the centering device suitable for refilling the top cover of the pressurized water reactor pressure vessel during the centering process;
in the figure: 1. a display terminal; 2. a control box assembly; 3. a camera assembly; 4. a pressure vessel top cover hanger; 5. a pressure vessel top cover; 6. a guide post; 7. the annular I-shaped steel of the lifting appliance; 8. mounting a bracket I; 9. an annular cross laser transmitter; 10. a camera; 11. a battery pack; 12. a router; 13. i-shaped steel of a spreader beam; 14. mounting a bracket II; 15. a cross annular laser target; 16. the end part of the guide post; 17. a pressure vessel top cover unthreaded hole; 18. and (4) moving indication.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1 to 3, a centering device suitable for the pressurized water reactor pressure vessel top cover reinstallation comprises a display terminal 1, a control box assembly 2 and a camera assembly 3, wherein the control box assembly 2 and the camera assembly 3 are installed on a pressure vessel top cover lifting appliance 4, and the camera assembly 3 is fixed right above a guide post 6 corresponding to a pressure vessel top cover light hole 17; the display terminal 1 is arranged on a 20m platform, and can acquire a signal of the position of the guide post 6, which is detected by the camera component 3, from the unthreaded hole of the top cover 7 of the pressure vessel in real time by using the control box component 2, and give a moving direction of the unthreaded hole 17 of the top cover of the pressure vessel to the guide post 6; the camera assembly 3 comprises an annular cross laser emitter 9, a camera 10 and a mounting bracket I8, wherein the camera 10 is fixed on a hanger annular I-shaped steel 7 on the pressure vessel top cover hanger 4 through the mounting bracket I8, and the camera 10 is positioned right above the guide post 6 corresponding to the pressure vessel top cover light hole 17; an annular cross laser emitter 9 is also arranged on the edge of the camera 10 and used for emitting a cross annular laser target 15 for indicating centering; the control box assembly 2 comprises a battery pack 11, a router 12 and a mounting bracket II14, wherein the battery pack 11 and the router 12 which are arranged in the shell of the control box assembly 2 are fixed on a lifting appliance beam I-steel 13 in the pressure vessel top cover lifting appliance 4 through the mounting bracket II 14; the control box assembly 2 is connected with the camera assembly 3 through a cable, and the battery pack 11 supplies power to the camera 10, the router 12 and the annular cross laser transmitter 9; the router 12 in the control box assembly 2 exchanges information with the display terminal 1 in a wired or wireless mode through the video signal of the collecting camera 10, wherein the display terminal 1 can display a cross annular laser target 15 formed by the cross laser emitter 9, the position of the camera assembly 3 is adjusted after the start-up, so that a monitoring picture of the display terminal 1 displays that the cross annular laser target 15 is in the center, and when the pressure container top cover is installed back, and the guide column end part 16 is not completely aligned with the cross annular laser target 15, the display terminal 1 can recognize the offset square and display a movement instruction 18, and a ring crane commander can move in a ring crane mode according to the movement instruction 18 so as to align the guide column 6 with the pressure container top cover unthreaded hole 17.
Claims (6)
1. The utility model provides a centering device suitable for pressurized water reactor pressure vessel top cap repacking which characterized in that: the device comprises a display terminal (1), a control box assembly (2) and a camera assembly (3), wherein the control box assembly (2) and the camera assembly (3) are both arranged on a pressure vessel top cover lifting appliance (4), and the camera assembly (3) is arranged right above a guide post (6) corresponding to a pressure vessel top cover light hole (17); the display terminal (1) is connected with the control box component (2), and position signals of the camera component (3) for detecting the guide posts (6) away from the light hole of the pressure vessel top cover (7) are acquired in real time through the control box component (2), and the square movement of the guide posts (6) in the alignment of the light hole (17) of the pressure vessel top cover is given.
2. The centering device for the pressurized water reactor pressure vessel head reloading as claimed in claim 1, wherein: the camera assembly (3) comprises a cross laser emitter (9), a camera (10) and a mounting bracket I (8), wherein the camera (10) is fixed on a lifting appliance annular I-shaped steel (7) on a pressure container top cover lifting appliance (4) through the mounting bracket I (8), and the camera (10) is positioned right above a guide column (6) corresponding to a pressure container top cover light hole (17); an annular cross laser emitter (9) is arranged on the edge of the camera (10) and used for emitting a cross annular laser target (15) for indicating centering.
3. The centering device for the pressurized water reactor pressure vessel head reloading as claimed in claim 1, wherein: the control box assembly (2) comprises a battery pack (11), a router (12) and a mounting bracket II (14), wherein the battery pack (11) and the router (12) which are installed in a shell of the control box assembly (2) are fixed on a lifting appliance beam I-steel (13) in the pressure container top cover lifting appliance (4) through the mounting bracket II (14).
4. The centering device for the pressurized water reactor pressure vessel head reloading as claimed in claim 3, wherein: the control box assembly (2) is connected with the camera assembly (3) through a cable, and the battery pack (11) supplies power to the router 12, the camera (10) in the camera assembly (3) and the annular cross laser transmitter (9); the router (12) in the control box component (2) exchanges the video signal of the acquisition camera (10) with the display terminal (1) in a wired or wireless mode.
5. The centering device for the pressurized water reactor pressure vessel head reloading as claimed in claim 1, wherein: the display terminal (1) can display the cross annular laser target (15) formed by the cross laser emitter (9), the position of the camera assembly (3) is adjusted after the camera assembly is started, the monitoring picture of the display terminal (1) can display that the cross annular laser target (15) is in the center, and when the top cover of the pressure container is installed back, the end part (16) of the guide column is not completely aligned with the cross annular laser target (15), the display terminal (1) can recognize the offset square and display a moving indication (18).
6. The centering device for the pressurized water reactor pressure vessel head back-mounting according to claim 1 or 5, characterized in that: the display terminal (1) is installed on a 20m platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574844.1A CN111354490B (en) | 2018-12-21 | 2018-12-21 | Centering device suitable for pressurized water reactor pressure vessel top cap reinstallation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574844.1A CN111354490B (en) | 2018-12-21 | 2018-12-21 | Centering device suitable for pressurized water reactor pressure vessel top cap reinstallation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111354490A true CN111354490A (en) | 2020-06-30 |
| CN111354490B CN111354490B (en) | 2024-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811574844.1A Active CN111354490B (en) | 2018-12-21 | 2018-12-21 | Centering device suitable for pressurized water reactor pressure vessel top cap reinstallation |
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| CN (1) | CN111354490B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09171092A (en) * | 1995-12-19 | 1997-06-30 | Toshiba Corp | Underwater television device for inspection of inside of reactor pressure vessel |
| JPH10221482A (en) * | 1997-01-31 | 1998-08-21 | Toshiba Corp | Device and method for inspecting and repairing atomic power plant |
| CN203850005U (en) * | 2014-05-28 | 2014-09-24 | 中广核核电运营有限公司 | Reactor lid sling supporting tool |
| CN104766641A (en) * | 2015-03-20 | 2015-07-08 | 中国第一重型机械集团大连加氢反应器制造有限公司 | Civilian nucleus top cover tube base cold installation and turnover device |
| CN209401331U (en) * | 2018-12-21 | 2019-09-17 | 核动力运行研究所 | A kind of centralising device returning dress suitable for Technologies of PWR Vessels top cover |
-
2018
- 2018-12-21 CN CN201811574844.1A patent/CN111354490B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09171092A (en) * | 1995-12-19 | 1997-06-30 | Toshiba Corp | Underwater television device for inspection of inside of reactor pressure vessel |
| JPH10221482A (en) * | 1997-01-31 | 1998-08-21 | Toshiba Corp | Device and method for inspecting and repairing atomic power plant |
| CN203850005U (en) * | 2014-05-28 | 2014-09-24 | 中广核核电运营有限公司 | Reactor lid sling supporting tool |
| CN104766641A (en) * | 2015-03-20 | 2015-07-08 | 中国第一重型机械集团大连加氢反应器制造有限公司 | Civilian nucleus top cover tube base cold installation and turnover device |
| CN209401331U (en) * | 2018-12-21 | 2019-09-17 | 核动力运行研究所 | A kind of centralising device returning dress suitable for Technologies of PWR Vessels top cover |
Non-Patent Citations (1)
| Title |
|---|
| 刘石桥;刘丙月;: "反应堆压力容器内壁缺陷产生原因分析", 压力容器, no. 01, 30 January 2017 (2017-01-30) * |
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| CN111354490B (en) | 2024-08-09 |
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