CN107958713B - Video inspection device for inner wall of steam generator connecting pipe - Google Patents
Video inspection device for inner wall of steam generator connecting pipe Download PDFInfo
- Publication number
- CN107958713B CN107958713B CN201610898312.8A CN201610898312A CN107958713B CN 107958713 B CN107958713 B CN 107958713B CN 201610898312 A CN201610898312 A CN 201610898312A CN 107958713 B CN107958713 B CN 107958713B
- Authority
- CN
- China
- Prior art keywords
- pressing plate
- rotating shaft
- shell
- sliding block
- circumferential
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007689 inspection Methods 0.000 title claims abstract description 31
- 238000004804 winding Methods 0.000 claims abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
-
- 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
Landscapes
- 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 nuclear power station overhaul, and particularly discloses a video inspection device for the inner wall of a steam generator connecting pipe, which comprises a rotating shaft, a motor, a camera mounting seat and a shell, wherein the rotating shaft penetrates through the shell, a circumferential sliding block and a pressing plate are arranged at the lower end of the shell, the bottom of the circumferential sliding block is pressed by the pressing plate, a bottom mounting plate is positioned between the pressing plate and the shell, an arc-shaped chute is formed in the pressing plate, the main body of the circumferential sliding block is positioned in the arc-shaped chute, a shifting block is fixedly arranged on the rotating shaft, and the shifting block is positioned below the pressing plate. The motor drives the camera mount pad to rotate, and then drives the inspection camera and carries out the video inspection. The design shifting block sliding block structure prevents the cable from winding, and simultaneously performs circumferential positioning on the rotating shaft.
Description
Technical Field
The invention belongs to the technical field, and particularly relates to an inspection device for the inner wall of a steam generator connecting pipe.
Background
For in-service inspection of the steam generator main pipe take-over fillet area, ASME XI volumes (98 th edition +99 and 2000 complement) eliminate the need for inspection of the steam generator take-over fillet area. However, the CFR50 regulations promulgated by the U.S. nuclear pipe clearly require a volume inspection or high power visual inspection of the fillet area of this take-over, and no longer accommodate the requirements associated with ASME XI volumes. Since CFR50 is under federal regulation in the united states, its legal effects are higher than normal, the project is under mandatory inspection in the united states.
The AP1000 type nuclear power unit is a third generation nuclear power unit introduced from a western house in the United states of China, and the nuclear safety supervision department in China correspondingly puts forward the in-service inspection requirement of the steam generator main pipeline take-over fillet area and is incorporated into the in-service inspection outline of three doors and sea. It is expected that all AP1000 type units need to perform the inspection of the project in the future.
The AP1000 steam generator is provided with 5 connecting pipes, namely 1 water inlet connecting pipe and 1 water inlet connecting pipe, and is arranged at the hot end of the evaporator water chamber; the water outlet connecting pipes are 2, the residual row connecting pipes are 1, and the CVS connecting pipes are 1 and are uniformly distributed at the cold end of the water chamber. The cold end and the hot end of the water chamber are respectively provided with 1 personal hole which is a passage for personnel and equipment to enter and exit the water chamber.
Disclosure of Invention
The invention aims to provide a video inspection device for the inner wall of a steam generator connecting pipe, which can realize the video inspection of the inner wall of the steam generator connecting pipe.
The technical scheme of the invention is as follows:
the utility model provides a video inspection device of inner wall is taken over to steam generator, includes the pivot, the driving motor who is connected with the pivot upper end, the camera mount pad of being connected with the pivot lower extreme, still includes the casing, the pivot pass the casing, the casing lower extreme is equipped with circumference slider and clamp plate, the clamp plate push down circumference slider bottom, make the bottom mounting panel be located between clamp plate and the casing, the clamp plate on process have arc spout, circumference slider's main part is located arc spout, the pivot on fixed be equipped with the shifting block, the shifting block be located the clamp plate below.
In the video inspection device for the inner wall of the steam generator connecting pipe, the upper end of the rotating shaft is connected with the output shaft of the motor through the coupler.
In the video inspection device for the inner wall of the steam generator connecting pipe, a speed reducer is arranged on the rotating shaft.
In the video inspection device for the inner wall of the steam generator connecting pipe, a connecting rod is arranged above the shell, the connecting rod is of a stepped rod-shaped structure with an inner cavity, an output shaft of the driving motor is located in the inner cavity of the connecting rod, and the output shaft is coaxial with the connecting rod.
In the video inspection device for the inner wall of the steam generator connecting pipe, a motor seat is fixedly arranged between the shell and the connecting rod, and the driving motor is fixedly arranged through the motor seat.
In the video inspection device for the inner wall of the steam generator connecting pipe, the end face, contacted with the shifting block, of the circumferential sliding block is provided with the rubber block.
The invention has the remarkable effects that: the video inspection device consists of a connecting rod, a rotary driving motor, a shell and a camera mounting seat. The motor drives the camera mount pad to rotate, and then drives the inspection camera and carries out the video inspection. A motor is adopted to drive a harmonic gear reducer; the mounting mode is a steel wheel fixing and flexible wheel output mode; the flexible gear drives the rotating shaft to rotate, and then the camera mounting seat is driven to rotate. The video inspection circumferential scanning range is 360 degrees, the rotation driving part has a circumferential limiting function for avoiding cable winding, the circumferential limiting adopts mechanical limiting, the circumferential sliding block is driven to rotate through a shifting block connected with a rotating shaft, and rubber blocks are arranged at two ends of the sliding block for avoiding impact force.
Drawings
FIG. 1 is a schematic view of a video inspection apparatus for the inner wall of a steam generator nozzle according to the present invention;
FIG. 2 is a schematic view of a circumferential slider and a dial assembly;
in the figure: 1. a connecting rod; 2. a coupling; 3. a speed reducer; 4. a housing; 5. a rotating shaft; 6. a camera mounting seat; 7. a shifting block; 8. a circumferential slider; 9. a pressing plate; 10. a motor; 11. and a motor base.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
As shown in fig. 1, the connecting rod 1 has a stepped rod structure with an inner cavity, and an output shaft of the motor 10 is located in the inner cavity of the connecting rod 1. The motor cabinet 11 is located the below of connecting rod 1, with connecting rod 1 bolted connection.
In the motor cabinet 11, the output shaft of the motor 10 is connected with the upper end of the rotating shaft 5 through the coupler 2, and the motor 10 drives the rotating shaft 5 to rotate. The lower extreme of motor cabinet 11 passes through bolt fixed mounting casing 4, and reduction gear 3 on pivot 5 is located this casing 4, and pivot 5 passes casing 4 simultaneously, stretches out casing 4 below. The lower end of the rotating shaft 5 is fixedly provided with a camera mounting seat 6 for mounting and detecting a camera.
The upper end of the connecting rod 1 is fixedly provided with a flange for connecting the whole video inspection device with other equipment.
The motor 10 can be fixedly arranged outside the connecting rod 1, the output end of the motor 10 is positioned in the inner cavity of the connecting rod 1, the motor output shaft is coaxial with the connecting rod 1, and the lower end of the output shaft is fixedly connected with the upper end of the rotating shaft 5, so that the motor 10 drives the rotating shaft 5 to rotate through the output shaft.
The rotating shaft 5 sequentially passes through the coupler 2 and the speed reducer 3 from top to bottom and stretches into the shell 4. The casing 4 is fixedly arranged at the lower end of the connecting rod 1, and the upper end of the casing 4 is connected with the lower surface of the connecting rod 1 through screws or other fixed connection modes. The reducer 3 is mounted inside the housing 4 by conventional means, such as steel wheel-fixed, flexspline output. The lower end of the housing 4 is opened, and the rotating shaft 5 passes through the opening and out of the housing 4.
When the motor 10 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the camera to rotate in the steam generator connecting pipe through the camera mounting seat 6, so that scanning within a 360-degree range is realized. Because the cable is arranged on the camera, in order to avoid the winding of the cable, the rotating shaft is mechanically positioned in the circumferential direction. As shown in fig. 2, a pressing plate 9 is fixedly arranged at the lower end of the shell 4, a circular arc chute is formed on the pressing plate 9, and a bottom panel of a circumferential sliding block 8 is arranged between the pressing plate 9 and the lower surface of the shell 4. That is, the bottom panel of the circumferential slide block 8 is pressed and mounted on the lower surface of the shell 4 by the pressing plate 9, and meanwhile, the main body of the circumferential slide block 8 is positioned in the circular arc-shaped chute of the pressing plate 9. The rotating shaft 5 is provided with the shifting block 7, the shifting block 7 is fixed with the rotating shaft 5, when the rotating shaft 5 rotates, the shifting block 7 is matched with the circumferential sliding block 8, and the rotating shaft 5 is limited in a certain circumferential range through the circular arc-shaped sliding groove. Therefore, the camera driven by the rotating shaft 5 is prevented from rotating too much, and the cable is prevented from winding.
Claims (3)
1. The utility model provides a video inspection device of inner wall is taken over to steam generator, includes pivot (5), the driving motor who is connected with pivot (5) upper end, camera mount pad (6) be connected with pivot (5) lower extreme, its characterized in that: the rotary shaft (5) penetrates through the shell (4), a circumferential sliding block (8) and a pressing plate (9) are arranged at the lower end of the shell (4), the pressing plate (9) presses the bottom of the circumferential sliding block (8) to enable a bottom mounting plate to be located between the pressing plate (9) and the shell (4), an arc-shaped chute is formed in the pressing plate (9), a main body of the circumferential sliding block (8) is located in the arc-shaped chute, a shifting block (7) is fixedly arranged on the rotary shaft (5), and the shifting block (7) is located below the pressing plate (9);
the upper end of the rotating shaft (5) is connected with an output shaft of the motor through a coupler (2); a speed reducer (3) is arranged on the rotating shaft (5);
a connecting rod (1) is arranged above the shell (4), the connecting rod (1) is of a stepped rod-shaped structure with an inner cavity, an output shaft of the driving motor is positioned in the inner cavity of the connecting rod (1), and the output shaft is coaxial with the connecting rod (1);
the speed reducer (3) adopts a motor to drive a harmonic gear speed reducer, and the installation mode is a steel wheel fixed and flexible wheel output mode; the flexible gear drives the rotating shaft to rotate, so that the camera mounting seat is driven to rotate; the video inspection circumferential scanning range is 360 degrees, in order to avoid cable winding, the rotation driving part has a circumferential limiting function, circumferential limiting adopts mechanical limiting, and the rotation of the circumferential sliding block (8) is driven by a shifting block (7) connected with the rotating shaft (5).
2. A video inspection apparatus for a steam generator take over inner wall as claimed in claim 1, wherein: the motor seat (11) is fixedly arranged between the shell (4) and the connecting rod (1), and the driving motor is fixedly arranged through the motor seat (11).
3. A video inspection apparatus for a steam generator take over inner wall as claimed in claim 1, wherein: the end face of the circumferential sliding block (8) contacted with the shifting block (7) is provided with a rubber block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610898312.8A CN107958713B (en) | 2016-10-14 | 2016-10-14 | Video inspection device for inner wall of steam generator connecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610898312.8A CN107958713B (en) | 2016-10-14 | 2016-10-14 | Video inspection device for inner wall of steam generator connecting pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107958713A CN107958713A (en) | 2018-04-24 |
| CN107958713B true CN107958713B (en) | 2024-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610898312.8A Active CN107958713B (en) | 2016-10-14 | 2016-10-14 | Video inspection device for inner wall of steam generator connecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107958713B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110689977B (en) * | 2019-09-11 | 2021-01-01 | 苏州热工研究院有限公司 | Video inspection equipment and method suitable for steam generator tube plate |
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| US6639959B1 (en) * | 2002-05-06 | 2003-10-28 | General Electric Company | Guide tube camera inspection fixture and method of use |
| CN101364451A (en) * | 2008-09-28 | 2009-02-11 | 苏州热工研究院有限公司 | Closed-circuit television inspection apparatus for top cover of reactor pressure vessel |
| JP2009180595A (en) * | 2008-01-30 | 2009-08-13 | Hitachi-Ge Nuclear Energy Ltd | Pipe inner face inspecting device |
| CN101936679A (en) * | 2009-07-01 | 2011-01-05 | 韩电Kps株式会社 | Apparatus for visually inspecting and removing foreign object in gaps of bundle of heating tubes of upper portion of tube sheet of secondary side of steam generator |
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| CN203322666U (en) * | 2013-06-11 | 2013-12-04 | 江苏海能电器有限公司 | Electric cabinet with limitable rotating angle |
| CN104078088A (en) * | 2014-07-01 | 2014-10-01 | 中科华核电技术研究院有限公司 | Nuclear power station climbing robot system and method for detecting secondary side of steam generator |
| CN204044081U (en) * | 2013-12-30 | 2014-12-24 | 山东北方光学电子有限公司 | Continuous stepping rotating mechanism |
| CN204270661U (en) * | 2014-12-25 | 2015-04-15 | 福建宁德核电有限公司 | A kind of used in nuclear power station image pick-up detection device and image mechanism thereof |
| CN204732178U (en) * | 2014-12-30 | 2015-10-28 | 中核武汉核电运行技术股份有限公司 | VVER core barrel outside surface video inspection device |
| CN204785652U (en) * | 2015-06-04 | 2015-11-18 | 绍兴路曼光电科技有限公司 | LED fluorescent tube base rotary device |
| CN105810264A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Vector control underwater planktonic video inspection device |
| CN206179529U (en) * | 2016-10-14 | 2017-05-17 | 核动力运行研究所 | Steam generator nozzle inner wall's video inspection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8526564B2 (en) * | 2010-12-13 | 2013-09-03 | Westinghouse Electric Company Llc | Top guide inspection fixture |
-
2016
- 2016-10-14 CN CN201610898312.8A patent/CN107958713B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04348273A (en) * | 1991-04-25 | 1992-12-03 | Nuclear Fuel Ind Ltd | Noiseless rotary ect probe |
| US6313869B1 (en) * | 1999-03-09 | 2001-11-06 | Edward J. Hyp | J nozzle articulating camera system |
| DE10130343A1 (en) * | 2001-06-27 | 2003-01-16 | Webasto Tuersysteme Gmbh | Rotation angle measurement device for a rotating shaft, especially a motor vehicle steering wheel shaft is configured so that errors caused by deflection of the rotating shaft end are avoided |
| US6639959B1 (en) * | 2002-05-06 | 2003-10-28 | General Electric Company | Guide tube camera inspection fixture and method of use |
| JP2009180595A (en) * | 2008-01-30 | 2009-08-13 | Hitachi-Ge Nuclear Energy Ltd | Pipe inner face inspecting device |
| CN101364451A (en) * | 2008-09-28 | 2009-02-11 | 苏州热工研究院有限公司 | Closed-circuit television inspection apparatus for top cover of reactor pressure vessel |
| CN101936679A (en) * | 2009-07-01 | 2011-01-05 | 韩电Kps株式会社 | Apparatus for visually inspecting and removing foreign object in gaps of bundle of heating tubes of upper portion of tube sheet of secondary side of steam generator |
| CN203164823U (en) * | 2012-11-27 | 2013-08-28 | 王新杰 | Safe plastic housing chassis portable computer |
| TWM454352U (en) * | 2013-01-18 | 2013-06-01 | Shi-Jie Lin | Rear-view mirror type driving aid |
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| CN204270661U (en) * | 2014-12-25 | 2015-04-15 | 福建宁德核电有限公司 | A kind of used in nuclear power station image pick-up detection device and image mechanism thereof |
| CN204732178U (en) * | 2014-12-30 | 2015-10-28 | 中核武汉核电运行技术股份有限公司 | VVER core barrel outside surface video inspection device |
| CN105810264A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Vector control underwater planktonic video inspection device |
| CN204785652U (en) * | 2015-06-04 | 2015-11-18 | 绍兴路曼光电科技有限公司 | LED fluorescent tube base rotary device |
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| Publication number | Publication date |
|---|---|
| CN107958713A (en) | 2018-04-24 |
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