CN104979027B - Nuclear power station control rod drive assembly lower omega welding seam is vortexed scanner - Google Patents
Nuclear power station control rod drive assembly lower omega welding seam is vortexed scanner Download PDFInfo
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- CN104979027B CN104979027B CN201510258094.7A CN201510258094A CN104979027B CN 104979027 B CN104979027 B CN 104979027B CN 201510258094 A CN201510258094 A CN 201510258094A CN 104979027 B CN104979027 B CN 104979027B
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- control rod
- upper base
- scanner
- mobile station
- welding seam
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/002—Detection of leaks
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
-
- 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)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a kind of nuclear power station control rod drive assembly lower omega welding seam vortex scanner, it includes probe, camera, clamp the probe holder of probe, clamp the shooting headstock of camera, rotating part, location division, translation part, arc and its both ends spacing diameter more than control rod of the rotating part in radian more than π, it includes central seat that is curved and being mutually fixedly connected with location division, moved in a circle and curved mobile station with the center of circle of upper base in upper base, the drive mechanism for driving the mobile station to be moved in a circle in upper base, the mobile station is with the radian of the upper base and more than 2 π.The present invention realizes the circular motion of probe and camera using the mobile station that can be moved in a circle in upper base, and then realization is popped one's head in single group and camera carries out 360 ° of inspections to omega welding seam.
Description
Technical field
The present invention relates to nuclear power field of non destructive testing, more particularly to a kind of nuclear power station control rod drive assembly lower omega welding seam
Vortex scanner.
Background technology
Omega welding seam is the special seal weld seam being located on nuclear power station CRDM, positioned at the pressure side of primary Ioops
Boundary, long-term radiation vibrated, high, the collective effect of internal high temperature hyperbaric environment, the presence of weld defect can aggravate its corrosion
The development of fatigue or SCC, so as to cause the leakage of main system.
Lower omega welding seam is C-shaped stainless-steel thin-wall pipe weld seam, positioned at the bottom of the driving coil of CRDM.Ω
Weld seam has radius small, and curvature is big, and wall thickness is thin（3mm or so）The characteristics of, volume shape is carried out to it and checks that difficulty is larger, and it is special
Different profile（Semicircular configuration）, weld seam surfaces externally and internally is molded poor（Weld seam is uneven）, narrow and small, the conventional inspection of surrounding environment
Survey method and probe cannot comprehensively be detected to it.The environmental dose of omega welding seam is higher, by hand flaw detection to testing staff with
Carry out larger injury, and the area people cannot be reached.Further, since the presence of driving coil, it is impossible in the form of lifting
Install and Non-Destructive Testing is carried out to girth joint whole region using loop configuration.
The content of the invention
It is an object of the invention to provide a kind of nuclear power station control rod drive assembly lower omega welding seam vortex scanner.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：Under a kind of nuclear power station control rod drive assembly
Portion's omega welding seam vortex scanner, it includes probe, camera, the probe holder of clamping probe, the shooting headstock of clamping camera, use
In fixed probe holder and the shooting headstock and drive probe holder and the shooting headstock around control rod lower rotational rotating part, be installed on
The rotating part lower section drives the rotation for making the location division of vortex scanner positioning and being installed on the location division lower section
, toward and away from the translation part for controlling rod motion, the rotating part is more than arc and its two ends of π in radian for transfer part and location division
More than the diameter of control rod, it includes central seat that is curved and being mutually fixedly connected with location division to portion's spacing, at top bottom
Moved in a circle with the center of circle of upper base on seat and curved mobile station and drive the mobile station in upper base
The drive mechanism for moving in a circle, the mobile station is with the radian of the upper base and more than 2 π.
Optimization, the mobile station lower surface offers the deep-slotted chip breaker matched with the upper base, in the deep-slotted chip breaker
The built-in motor that the built-in roller of groove and the built-in roller of driver slot are rotated is provided with, deep-slotted chip breaker is arranged in the upper base,
The built-in roller of groove is rotated so as to drive mobile station to be moved in a circle in upper base.
Optimization, two row's directive wheels of axis vertical upper base upper surface, two row institutes are provided with the upper base
State the curved distribution of directive wheel and form arc-shaped guide rail, each directive wheel side wall opens up fluted, the mobile station lower surface
On be fixedly connected with fan-shaped guiding wing plate, the edge of the guiding wing plate has corresponding with the groove on the directive wheel
Projection, the guiding wing plate be located at directive wheel described in two rows between and projection be arranged in groove, described in two rows directive wheel limit
The system guiding wing plate is moved in the arc-shaped guide rail that two row's directive wheels are formed.
Further, the curved guiding wing plate upper end has an extension, and the lateral surface of extension has curved
The tooth of distribution, drive mechanism interts what is set and be meshed with the tooth of the guiding wing plate upper end in being included in same row's directive wheel
Drive gear, the motor for driving the drive gear to rotate.
Optimization, vortex scanner also includes central seat and lower base, and the central seat is installed on upper base
And lower base between, the location division includes two being connected between the lower base and central seat and being oppositely arranged
Positioning cylinder, by positioning cylinder drive so as to clamp the locating piece of control rod and be fixedly installed in lower base and central seat
Between nylon block, during positioning, two locating pieces and nylon block position line form triangle and clamp the control
Rod, the axis direction of the length direction of the locating piece parallel to control rod.
Further, the supporting plate is connected with the end of the locating piece and is additionally provided with for guiding location division to control rod
The auxiliary guide wheels of both sides.
Optimization, micro-swinging mechanism is also associated between the location division and translation part.
Optimization, it is additionally provided with zero position switch in the mobile station.
Optimization, the translation part is mechanical bond formula Rodless cylinder.
The beneficial effects of the present invention are：The present invention realizes visiting using the mobile station that can be moved in a circle in upper base
The circular motion of head and camera, and then realization is popped one's head in single group and camera carries out 360 ° of inspections to omega welding seam.
Brief description of the drawings
Accompanying drawing 1 is three-dimensional view of the invention；
Accompanying drawing 2 is the driving rolls of drive division of the present invention and the attachment structure schematic diagram of motor；
In accompanying drawing：1st, pop one's head in；2nd, camera；3rd, probe holder；4th, the headstock is imaged；5th, rotating part；6th, location division；7th, translate
Portion；8th, micro-swinging mechanism；31st, mounting seat；32nd, auxiliary stand；33rd, lead column；34th, counterbalance spring；51st, upper base；52、
Mobile station；54th, directive wheel；55th, it is oriented to wing plate；56th, drive gear；57th, motor；58th, zero position switch；59th, driving rolls；
61st, positioning cylinder；62nd, locating piece；63rd, supporting plate；64th, auxiliary guide wheels；65th, nylon block；66th, central seat；67th, lower bottom
Seat.
Specific embodiment
Shown embodiment is described in detail below to the present invention below in conjunction with the accompanying drawings：
The present invention be directed to a kind of special automation vortex designed the characteristics of control rod drive assembly lower omega welding seam
And video inspection device, the device can realize remote automation positioning and install that remote control carries out comprehensive whirlpool to weld seam
Stream and video check.
As shown in figure 1, nuclear power station control rod drive assembly lower omega welding seam vortex scanner include probe 1, camera 2,
Clamp the probe holder 3 of probe, the shooting headstock 4 of clamping camera, the headstock 4 and drive spy for fixing probe holder 3 and shooting
The headstock 3 and the shooting headstock 4 around control rod lower rotational rotating part 5, be installed on the lower section of the rotating part 5 for making vortex scanning
Location division 6 and be installed on the lower section of the location division 6 driving rotating part 5 and location division 6 toward and away from control that device is positioned
The translation part 7 of rod motion processed.
Probe holder 3 include be connected with the upper end of mobile station 52 mounting seat 31, the auxiliary stand 32 for fixing camera,
Upper end is fixed in mounting seat 31 and lower end is arranged in mobile station 52 lead column 33, it is set in lead column 33 and positioned at peace
For adjusting counterbalance spring 34 of the probe 1 in the control rod axial direction upper deviation between dress seat 31 and mobile station 52.
The characteristics of for lower omega welding seam, is, it is necessary to semicircular configuration check device, therefore rotating part 5 is radian more than π
, more than the diameter of control rod, it includes top that is curved and being mutually fixedly connected with location division 6 for arc and its both ends spacing
Base 51, moved in a circle with the center of circle of upper base 51 in upper base 51 and curved mobile station 52, drive it is described
The drive mechanism that mobile station 52 moves in a circle in upper base 51, the radian of the mobile station 52 and the upper base 51
With more than 2 π.Two row's directive wheels 54 of the upper surface of axis vertical upper base 51, two row institutes are provided with the upper base 51
State the curved distribution of directive wheel 54 and form arc-shaped guide rail, each side wall of the directive wheel 54 opens up fluted, the mobile station 52
Be fixedly connected with lower surface in fan-shaped guiding wing plate 55, it is described be oriented to the edge of wing plate 55 have with the directive wheel 54
The corresponding projection of groove, the guiding wing plate 55 is located between directive wheel 54 described in two rows and projection is arranged in groove,
Directive wheel 54 described in two rows limits the guiding wing plate 55 and is moved in the arc-shaped guide rail that two row's directive wheel 54 is formed.Curved
Guiding wing plate 55 upper end has extension, and the lateral surface of extension has the tooth of curved distribution, and drive mechanism is included in
Intert in same row's directive wheel set and be meshed with the tooth of guiding wing plate 55 upper end drive gear 56, for driving
State the motor 57 of the rotation of drive gear 56.Motor 57 can have various connected modes with drive gear 56, in this reality
Apply in example, drive gear 56 totally four is uniformly distributed on the upper surface of upper base 51, each drive gear 56 is by being located in
Rotating shaft in upper base 51 is coaxially connected with the driving rolls 59 being located on the lower surface of upper base 51, two neighboring to drive rolling
Wheel 59 between be mutually connected by conveyer belt, the motor 57 be installed on the lower surface of upper base 51 and with positioned at centre
Conveyer belt be mutually connected, motor 57 rotate drive conveyer belt rotate so that drive driving rolls 59 rotate, with driving
The coaxially connected drive gear 56 of roller 59 synchronous axial system therewith, finally realizes each drive part by part mobile station of drive gear 56
52.Zero position switch 58 is additionally provided with mobile station 52.
Vortex scanner also includes central seat 66 and lower base 67, and the central seat 66 is installed on upper base 51
And lower base 67 between, the location division 6 includes being connected between the lower base 67 and central seat 66 and sets relatively
Two positioning cylinders 61 putting, locating piece 62 so as to clamp control rod is driven by positioning cylinder 61 and bottom is fixedly installed in
Nylon block 65 between base 67 and central seat 66, during positioning, two locating pieces 62 and the position of nylon block 65 connect
Linear triangularity clamps the control rod, the axis direction of the length direction of the locating piece 62 parallel to control rod.It is described
The end that supporting plate 63 is connected with the locating piece 62 is additionally provided with for guiding location division to the auxiliary guide wheels of control rod both sides
64.Micro-swinging mechanism 8, the upper end of micro-swinging mechanism and lower base are also associated between the location division 6 and translation part 7
67 are connected.The translation part 7 is mechanical bond formula Rodless cylinder.
Concrete technical scheme of the invention：The check device is transplanted on through CRDM gaps using telescopic mechanical arm tested
The side of component, rotating part and location division is pushed to the lower section of weld seam using translation part, and locating piece is close to tested component
Cylinder section surface, is held tightly by two diaphragm types and realizes positioning the installation of device；Motor gear band and then drive driving
Gear finally drives mobile station to be moved along two row's directive wheels, is finally completed 360 ° of rotations, realizes that dual camera enters to face of weld
Row video check, observation face of weld whether there is leakage produce, or exist to be close to close eddy current probe inspection have a significant effect because
Element is present, and the aciculiform cylinder of probe holder promotes probe, makes special-shaped eddy current probe surface be close to close face of weld, and motor drives
Probe carries out 360 degree of eddy current inspections to face of weld, and inspection result is analyzed, record those suspected defects position；Probe holder
Cylinder is withdrawn, and positioning cylinder loosens, and translation part withdraws, and check device is transplanted on another tested component by telescopic arm.
To sum up, the present invention has advantages below：
1st, in translation motion, micro-swinging mechanism can be carried out this check device according to the position of device and tested control rod
Micro-swinging, the within the specific limits relative position of adjusting means and tested control rod, it is ensured that positioning is more accurate.
2nd, probe is double coil eddy current probe described in the present apparatus, and the position of two winding displacement circles crosses one another, and is realized to weld seam
The all standing on surface, analyzes to judge the type and size of defect by the integrated signal to each coil.
3rd, the present apparatus carries out video check to face of weld using two minisize pick-up heads, and the use of face formula light source is inspection
Suitable brightness is provided, it is ensured that the accuracy of inspection result and inspection area it is complete reachable.
4th, the present apparatus carries out real-time monitoring to whole checking process in position fixing process is installed using ultrasonic distance measuring probe, profit
With the position of the pinpoint accuracy Real-time Feedback device of ultrasonic distance measuring probe, realize that check device is fast and accurately positioned.
5th, the present invention drives the drive gear of multiple positions using single motor, by setting up each drive gear
Motion coupled relation, realizes each drive gear drive part by part mobile station, so as to realize using single group to pop one's head in Ω girth joints
360 ° of detections.
6th, eddy current probe frame of the present invention uses multi freedom design, may be implemented in it is circumferential and radially position from
Dynamic regulation, makes up the pivot that causes due to device position error and tested component center is misaligned and Plane of rotation and water
Average face is misaligned to be changed so as to the probe positions for causing are inaccurate or probe positions change with rotation position, it is ensured that checked
During eddy current probe can be good at fit detected weld surface.
7th, delivery device of the present invention is using mechanical bond formula Rodless cylinder, bearing capacity lightweight using its
Greatly, anti-torsion ability is strong, the characteristics of be adapted to conveyance long stroke general Work tool, makes the gross weight of device smaller, linear joint
Stability is more preferable.
The above embodiments merely illustrate the technical concept and features of the present invention, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this that it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that spirit is made, such as mobile station lower surface offers the deep-slotted chip breaker matched with upper base, the arc
The built-in motor that the built-in roller of groove and the built-in roller of driver slot are rotated is provided with groove, deep-slotted chip breaker is arranged in upper base,
The built-in roller of groove is rotated so as to drive mobile station to be moved in a circle in upper base, and such change should all be covered of the invention
Within protection domain.
Claims (7)
1. a kind of nuclear power station control rod drive assembly lower omega welding seam is vortexed scanner, and it includes probe（1）, camera（2）, folder
Hold the probe holder of probe（3）, clamping camera the shooting headstock（4）, for fixing probe holder（3）With the shooting headstock（4）And
Drive probe holder（3）With the shooting headstock（4）Around the rotating part of control rod lower rotational（5）, be installed on the rotating part（5）Lower section
For the location division for positioning vortex scanner（6）And it is installed on the location division（6）Lower section drives the rotating part（5）With
Location division（6）Toward and away from the translation part of control rod motion（7）, it is characterised in that：The rotating part（5）It is not less than in radian
, more than the diameter of control rod, it includes curved and and location division for the arc of π and its both ends spacing（6）Mutually it is fixedly connected
Upper base（51）, in upper base（51）On with upper base（51）The center of circle move in a circle and curved mobile station
（52）And drive the mobile station（52）In upper base（51）On the drive mechanism that moves in a circle, the mobile station（52）
With the upper base（51）Radian and more than 2 π, the mobile station（52）Lower surface offers and the upper base（51）
The deep-slotted chip breaker for matching, is provided with the built-in motor that the built-in roller of groove and the built-in roller of driver slot are rotated, arc in the deep-slotted chip breaker
Shape groove is arranged in the upper base（51）On, the built-in roller of groove is rotated so as to drive mobile station（52）In upper base
（51）On move in a circle, the upper base（51）On be provided with axis vertical upper base（51）Two rows of upper surface are oriented to
Wheel（54）, directive wheel described in two rows（54）Curved distribution forms arc-shaped guide rail, each described directive wheel（54）Side wall is offered
Groove, the mobile station（52）It is fixedly connected with lower surface in fan-shaped guiding wing plate（55）, the guiding wing plate（55）'s
Edge has and the directive wheel（54）On the corresponding projection of groove, the guiding wing plate（55）It is oriented to positioned at described in two rows
Wheel（54）Between and projection be arranged in groove, directive wheel described in two rows（54）Limit the guiding wing plate（55）It is oriented in two rows
Wheel（54）Moved in the arc-shaped guide rail of formation.
2. nuclear power station control rod drive assembly lower omega welding seam according to claim 1 is vortexed scanner, it is characterised in that：
The curved guiding wing plate（55）Upper end has extension, and the lateral surface of extension has the tooth of curved distribution, drives
Mechanism be included in same row's directive wheel intert set and with the guiding wing plate（55）The drive gear that the tooth of upper end is meshed
（56）, for driving the drive gear（56）The motor of rotation（57）.
3. nuclear power station control rod drive assembly lower omega welding seam according to claim 1 is vortexed scanner, it is characterised in that：
Vortex scanner also includes curved central seat（66）With curved lower base（67）, the central seat（66）Peace
Loaded on upper base（51）And lower base（67）Between, the location division（6）Including being connected to the lower base（67）With
Central seat（66）Between and two positioning cylinders being oppositely arranged（61）, by positioning cylinder（61）Drive so as to clamp control rod
Locating piece（62）And it is fixedly installed in lower base（67）And central seat（66）Between nylon block（65）, during positioning,
Two locating pieces（62）And nylon block（65）Position line forms triangle and clamps the control rod, the locating piece
（62）Length direction parallel to control rod axis direction.
4. nuclear power station control rod drive assembly lower omega welding seam according to claim 3 is vortexed scanner, it is characterised in that：
Supporting plate（63）It is connected to the locating piece（62）End be additionally provided with for guiding location division to the auxiliary of control rod both sides to lead
To wheel（64）.
5. nuclear power station control rod drive assembly lower omega welding seam according to claim 1 is vortexed scanner, it is characterised in that：
The location division（6）With translation part（7）Between be also associated with micro-swinging mechanism（8）.
6. nuclear power station control rod drive assembly lower omega welding seam according to claim 1 is vortexed scanner, it is characterised in that：
The mobile station（52）On be additionally provided with zero position switch（58）.
7. nuclear power station control rod drive assembly lower omega welding seam according to claim 1 is vortexed scanner, it is characterised in that：
The translation part（7）It is mechanical bond formula Rodless cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510258094.7A CN104979027B (en) | 2015-05-20 | 2015-05-20 | Nuclear power station control rod drive assembly lower omega welding seam is vortexed scanner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510258094.7A CN104979027B (en) | 2015-05-20 | 2015-05-20 | Nuclear power station control rod drive assembly lower omega welding seam is vortexed scanner |
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| CN104979027A CN104979027A (en) | 2015-10-14 |
| CN104979027B true CN104979027B (en) | 2017-06-06 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345338A (en) * | 2015-11-28 | 2016-02-24 | 陈伟 | Welding and welding line detection device with efficient wireless control |
| CN108269631B (en) * | 2016-12-30 | 2023-12-26 | 核动力运行研究所 | Ultrasonic inspection device for upper sealing weld joint of control rod driving mechanism |
| CN107991382B (en) * | 2017-10-16 | 2024-04-05 | 中广核检测技术有限公司 | Eddy current inspection device |
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Effective date of registration: 20171016 Address after: Futian District Shenzhen City, Guangdong province 518000 Shennan Road No. 2002 building building room 1258 Co-patentee after: Suzhou Nuclear Power Research Institute Co., Ltd. Patentee after: CGNPC Inspection Technology Co., Ltd. Co-patentee after: China General Nuclear Power Corporation Co-patentee after: China wide nuclear electricity incorporated company Co-patentee after: Guangdong Nuclear Power Joint Venture Co., Ltd Address before: Futian District Shenzhen City, Guangdong province 518000 Shennan Road No. 2002 building building room 1258 Co-patentee before: Suzhou Nuclear Power Research Institute Co., Ltd. Patentee before: CGNPC Inspection Technology Co., Ltd. Co-patentee before: China General Nuclear Power Corporation Co-patentee before: China wide nuclear electricity incorporated company |