CN108254436B - Cable device for vortex detection of horizontal steam generator heat transfer tube - Google Patents
Cable device for vortex detection of horizontal steam generator heat transfer tube Download PDFInfo
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- CN108254436B CN108254436B CN201611248012.1A CN201611248012A CN108254436B CN 108254436 B CN108254436 B CN 108254436B CN 201611248012 A CN201611248012 A CN 201611248012A CN 108254436 B CN108254436 B CN 108254436B
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- 238000001514 detection method Methods 0.000 title claims abstract description 10
- 239000000523 sample Substances 0.000 claims abstract description 5
- 238000007689 inspection Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9013—Arrangements for scanning
- G01N27/902—Arrangements for scanning by moving the sensors
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
A cable device for vortex detection of a heat transfer tube of a horizontal steam generator comprises a rotating platform at the upper end, a double-upright-column guide rail, a lifting platform and a double-push device; the lifting platform carries the double-push device to move up and down along the double-upright guide rail, and the rotating platform drives the double-upright guide rail, the lifting platform and the double-push device to rotate; the double-push device 4 drives the eddy current probe to move; in the rotary platform, an upper layer flange is fixed with a lower layer flange through a support column; the large gear is fixed on the upper layer flange; the electric box A is fixed on the lower layer flange; the cable rotating mechanism is arranged between the lower layer flange and the upper layer flange; the supporting seat is fixed on the rotating ring, and the electric box B and the double-upright guide rail are both fixed on the supporting seat; the motor mounting seat is also fixed on the rotating ring, a motor is fixed above the motor mounting seat, and a pinion is arranged below the motor mounting seat; the rotating ring drives the double-upright guide rail to rotate through the driving of the motor.
Description
Technical Field
The technology belongs to the field of cable devices, and particularly relates to a cable device for vortex detection of a heat transfer tube of a horizontal steam generator.
Background
In a nuclear power plant, steam generator heat transfer tubes are the pressure boundary of the primary equipment and reactor cooling system of the nuclear power plant, with the pressure boundary area accounting for over 70% of the primary circuit boundary. Because the heat transfer pipes are all thin-wall pipes with the thickness of about 1mm and the operation working condition is very bad, the heat transfer pipes are always the weakest link of the pressure boundary of a loop. Statistics of international nuclear power operation data show that more than 50% of heat transfer tubes are damaged to different degrees in all the steam generators. The nuclear power countries at home and abroad regularly implement pre-service inspection and in-service inspection on the steam generator heat transfer pipe.
The steam generator of the VVER-1000M unit adopts a horizontal double-collecting pipe structure, and the heat transfer pipe adopts horizontal arrangement, which is called horizontal steam generator. 10000 heat transfer pipes are divided into two parts of cold and hot by two vertical collecting pipes with the inner diameter phi 834mm and the wall thickness 171mm, and are connected to the collecting pipes by hydraulic expansion and mechanical expansion.
In view of the structural particularities of the horizontal steam generator, the probe positioning and pushing device used is quite different from that of the vertical steam generator. The vortex inspection device needs to pass through a manhole with the diameter phi of 500mm and then enter a collecting pipe with the inner diameter phi 834mm and the height of 5m for vortex inspection.
Disclosure of Invention
The invention aims at: the cable device for vortex detection of the horizontal steam generator heat transfer tube is capable of avoiding the problem that cables are wound in the moving process of equipment, improving the safety of the cables, adopting a cable structure and guaranteeing the reliability of the equipment. .
The technical scheme of the invention is as follows: the vortex detecting device for the heat transfer tube of the horizontal steam generator comprises a rotating platform at the upper end, a double-upright-column guide rail, a lifting platform and a double-push device; the lifting platform carries the double-push device to move up and down along the double-upright guide rail, and the rotating platform drives the double-upright guide rail, the lifting platform and the double-push device to rotate; the double-push device 4 drives the eddy current probe to move;
in the rotary platform, an upper layer flange is fixed with a lower layer flange through a support column; the large gear is fixed on the upper layer flange; the electric box A is fixed on the lower layer flange; the cable rotating mechanism is arranged between the lower layer flange and the upper layer flange; the supporting seat is fixed on the rotating ring, and the electric box B and the double-upright guide rail are both fixed on the supporting seat; the motor mounting seat is also fixed on the rotating ring, a motor is fixed above the motor mounting seat, and a pinion is arranged below the motor mounting seat; the rotating ring drives the double-upright guide rail to rotate through the driving of the motor.
The cable rotating mechanism comprises an outer ring, an inner ring, a supporting plate, a baffle plate and a rotating drag chain; the outer ring is fixed with the lower layer flange, and the bracket above the inner ring is fixed with the rotating ring; the support plate is fixed on the outer ring, the baffle is fixed on the support plate, and a certain gap exists between the bottom surface of the baffle and the bottom of the inner ring, so that the baffle is not contacted with the bottom surface of the inner ring; the joints A and the joints B at the two ends of the rotary drag chain are respectively fixed with the inner ring and the outer ring; the inner ring is provided with an opening, so that a cable in the rotary drag chain can pass out of the inner ring; the inside of the double-upright guide rail is of a hollow structure, and the surface corresponding to the hole in the inner ring is provided with a hole, so that a cable can directly pass through the double-upright guide rail from the inner ring and finally is connected with the electric box B.
The support above the inner ring is fixed with the rotating ring by bolts.
The upper joint of the lifting drag chain is fixed on the supporting seat, the lower joint is fixed on the lifting platform, and the cable is enveloped in the lifting drag chain.
The invention has the remarkable effects that:
1) The eddy current testing device is added, the cable is divided into a plurality of sections, and the disassembly and the assembly of the equipment and the maintenance and the replacement of the cable are facilitated.
2) The scheme of adopting the cable rotating structure solves the risk of cable winding in the rotating process of equipment, and improves the safety of the equipment.
3) The cable rotating structure is arranged between the upper layer of flange and the lower layer of flange, so that foreign matters are prevented from entering the cable rotating structure to cause the fault of the cable.
4) The inner ring and the upright post of the cable rotating structure are provided with holes, so that the cable can pass through the hollow upright post from the drag chain and is connected with the electric box, the problem that the cable cannot be wound and scratched with other parts is solved, and the cable is protected.
5) In the cable rotating structure, the supporting plate is fixed on the outer ring, and the rotating drag chain is guided in the rotating process of the drag chain, so that the safety of the drag chain is ensured.
6) The lifting drag chain is applied to a long-travel vertical standing environment. The cable is enveloped in the lifting drag chain, so that the cable is prevented from winding and scraping in the movement of the lifting platform and the double-pushing device, and the safe and reliable operation of the equipment is ensured.
Drawings
FIG. 1 is a schematic diagram of a cable assembly for vortex detection of a horizontal steam generator heat transfer tube according to the present invention;
FIG. 2 is a schematic view of a rotating platform of a cable device for vortex detection of a horizontal steam generator heat transfer tube according to the present invention;
FIG. 3 is a schematic view of a lifting drag chain of a cable assembly for vortex detection of a horizontal steam generator heat transfer tube according to the present invention;
FIG. 4 shows a cable device for vortex detection of a horizontal steam generator heat transfer tube according to the present invention
In the figure: 1 rotary platform, 2 double-upright guide rails, 3 lifting platform, 4 double-push device, 5 lower flange, 6 upper flange, 7 support column, 8 big gear, 9 electric box A, 10 cable rotary structure, 11 rotary ring, 12 support seat, 13 electric box B, 14 motor installation seat, 15 motor, 16 pinion, 17 outer ring, 18 inner ring, 19 support plate, 20 baffle, 21 rotary drag chain, 22 joint A, 23 support, 24 lifting drag chain, 25 upper joint, 26 lower joint, 27 joint B, 28 hole
Detailed Description
The eddy current testing device for the heat transfer tube of the horizontal steam generator comprises a rotary platform 1 at the upper end, a double-upright-column guide rail 2, a lifting platform 3 and a double-push-pull device 4. The lifting platform 3 carries a double-push device 4 to move up and down along the double-upright guide rail 2, and the rotating platform 1 drives the double-upright guide rail (2), the lifting platform 3 and the double-push device 4 to rotate. The double push-pull device 4 drives the motion of the eddy current probe.
The rotary platform 1 comprises a lower flange 5, an upper flange 6, a support column 7, a large gear 8, an electric box A9, a cable rotary mechanism 10, a rotary ring 11, a supporting seat 12, an electric box B13, a motor mounting seat 14, a motor 15, a small gear 16 and a stand column 2.
The upper flange 6 is fixed to the lower flange 5 by a stay 7. The large gear 8 is fixed on the upper flange 6. The electrical box A9 is fixed on the lower flange 5. The cable rotation mechanism 10 is disposed between the lower flange 5 and the upper flange 6. The supporting seat 12 is fixed on the rotating ring 11, and the electric box B13 and the double-upright guide rail 2 are both fixed on the supporting seat 12. The motor mount 14 is also fixed to the rotary ring 11, and a motor 15 is fixed above the motor mount 14, and a pinion 16 is mounted below the motor mount 14. The rotating ring 11 drives the double-upright guide rail 2 to rotate by driving of the motor 15.
The cable rotation mechanism 10 includes an outer race 17, an inner race 18, a support plate 19, a baffle 20, and a rotary drag chain 21. The outer ring 17 is fixed with the lower flange 5, and the bracket 23 above the inner ring 18 is fixed with the rotary ring 11 by bolts. The support plate 19 is fixed on the outer ring 17, the baffle 20 is fixed on the support plate 19, and a certain gap exists between the bottom surface of the baffle 20 and the bottom of the inner ring 18, so that the baffle is not contacted. The joints a (22) and B27 at both ends of the rotary drag chain 21 are fixed to the inner race 18 and the outer race 17, respectively. An aperture 28 is provided in the inner race 18 to enable the cable in the rotary drag chain 21 to pass out of the inner race 18. The inside of the double-upright guide rail 2 is of a hollow structure, and a surface corresponding to the hole 28 in the inner ring 18 is provided with holes, so that a cable can directly pass through the double-upright guide rail 2 from the inner ring 18 and finally is connected with the electric box B13.
The upper joint 25 of the lifting drag chain 24 is fixed on the supporting seat 12, the lower joint 26 is fixed on the lifting platform 3, and the cable is enveloped inside the lifting drag chain 24.
Claims (1)
1. A cable device for horizontal steam generator heat transfer pipe vortex detection, its characterized in that: comprises a rotating platform (1) at the upper end, a double-upright-column guide rail (2), a lifting platform (3) and a double-push device (4); the lifting platform (3) carries a double-push device (4) to move up and down along the double-upright guide rail (2), and the rotating platform (1) drives the double-upright guide rail (2), the lifting platform (3) and the double-push device (4) to rotate; the double-push device (4) drives the eddy current probe to move;
in the rotary platform (1), an upper layer flange (6) is fixed with a lower layer flange (5) through a support column (7); the large gear (8) is fixed on the upper layer flange (6); the electric box A (9) is fixed on the lower layer flange (5); the cable rotating mechanism (10) is arranged between the lower layer flange (5) and the upper layer flange (6); the supporting seat (12) is fixed on the rotating ring (11), and the electric box B (13) and the double-upright guide rail (2) are both fixed on the supporting seat (12); the motor mounting seat (14) is also fixed on the rotary ring (11), a motor (15) is fixed above the motor mounting seat (14), and a pinion (16) is arranged below the motor mounting seat; the double-upright guide rail (2) is driven to rotate by the rotating ring (11) through the driving of the motor (15);
the cable rotating mechanism (10) comprises an outer ring (17), an inner ring (18), a supporting plate (19), a baffle plate (20) and a rotating drag chain (21); the outer ring (17) is fixed with the lower layer flange (5), and the bracket (23) above the inner ring (18) is fixed with the rotary ring (11); the support plate (19) is fixed on the outer ring (17), the baffle plate (20) is fixed on the support plate (19), and a certain gap exists between the bottom surface of the baffle plate (20) and the bottom of the inner ring (18) and is not contacted with the bottom surface of the inner ring; the joints A (22) and the joints B (27) at two ends of the rotary drag chain (21) are respectively fixed with the inner ring (18) and the outer ring (17); -an opening (28) in the inner ring (18) enabling the cable in the rotary drag chain (21) to pass out of the inner ring (18); the inside of the double-upright-column guide rail (2) is of a hollow structure, and a surface corresponding to a hole (28) in the inner ring (18) is provided with a hole, so that a cable can directly pass through the double-upright-column guide rail (2) from the inner ring (18) and finally is connected with the electric box B (13);
a bracket (23) above the inner ring (18) is fixed with the rotating ring (11) by bolts;
an upper joint (25) of the lifting drag chain (24) is fixed on the supporting seat (12), a lower joint (26) is fixed on the lifting platform (3), and the cable is enveloped in the lifting drag chain (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611248012.1A CN108254436B (en) | 2016-12-29 | 2016-12-29 | Cable device for vortex detection of horizontal steam generator heat transfer tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611248012.1A CN108254436B (en) | 2016-12-29 | 2016-12-29 | Cable device for vortex detection of horizontal steam generator heat transfer tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108254436A CN108254436A (en) | 2018-07-06 |
| CN108254436B true CN108254436B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611248012.1A Active CN108254436B (en) | 2016-12-29 | 2016-12-29 | Cable device for vortex detection of horizontal steam generator heat transfer tube |
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| Country | Link |
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| CN (1) | CN108254436B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397427A (en) * | 2019-01-02 | 2020-07-10 | 核动力运行研究所 | Installation device for vertical tube plate positioner of heat exchanger |
| CN117657902B (en) * | 2024-02-01 | 2024-05-10 | 苏州一目万相科技有限公司 | Cable winding and unwinding device of C-shaped arm and C-shaped arm |
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2016
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Patent Citations (11)
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| US5327079A (en) * | 1992-05-13 | 1994-07-05 | Abb Reaktor Gmbh | Method and device for non-destructive testing of a penetration of a reactor pressure vessel lid |
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| CN101650339A (en) * | 2009-07-28 | 2010-02-17 | 河南省中原内配股份有限公司 | Special eddy current flaw detector of cylinder sleeve |
| CN204008554U (en) * | 2014-08-04 | 2014-12-10 | 吴立新 | A kind of probe holder regulating device of Steel Pipe Eddy Detection |
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| CN108254436A (en) | 2018-07-06 |
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