CN101673584A - Closed circuit television inspection device - Google Patents
Closed circuit television inspection device Download PDFInfo
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- CN101673584A CN101673584A CN200810107238A CN200810107238A CN101673584A CN 101673584 A CN101673584 A CN 101673584A CN 200810107238 A CN200810107238 A CN 200810107238A CN 200810107238 A CN200810107238 A CN 200810107238A CN 101673584 A CN101673584 A CN 101673584A
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- supporting leg
- pneumatic supporting
- pneumatic
- circuit television
- closed
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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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Abstract
The invention relates to a closed circuit television inspection device used for inspecting the condition in a top cover of a reactor pressure container of a nuclear power plant, which comprises a platform positioning bracket and closed circuit television inspection equipment arranged on the platform positioning bracket, wherein the platform positioning bracket comprises a post rod of which one endis pressed against the inner surface of a biological shield ring for placing the top cover of the pressure container, and also comprises a first pneumatic supporting leg and a second pneumatic supporting leg; two matching states exist among the first pneumatic supporting leg, the second pneumatic supporting leg and the post rod; the first matching state is that the pneumatic supporting legs are furled and the first pneumatic supporting leg and the second pneumatic supporting leg are parallel with the post rod; and the second matching state is that the pneumatic supporting legs are unfolded, and certain angles are formed among the first pneumatic supporting leg, the second pneumatic supporting leg and the post rod.
Description
Technical field
The present invention relates to a kind of closed-circuit television checkout facility, especially a kind ofly be used to check the penetration piece of nuclear power plant reactor pressure vessels top cover inside or the closed-circuit television checking device of conduit and bell-mouthed weld seam and built-up welding surface appearance.
Background technology
The nuclear power plant reactor pressure vessel is the nucleus equipment in nuclear power station one circuit system, the reactor pressure vessels top cover is positioned at its top, with after reactor pressure vessel is connected, form a closed type container by sealing bolt jointly, this container has ensured that the safety of nuclear chain reaction of nuclear fission carries out.
In order to guarantee the safe operation of nuclear power station, relevant laws and regulations according to the nuclear power station inspection, reactor pressure vessel all required pressure vessels top cover inside surface appearance is carried out the closed-circuit television inspection, to find hidden danger defectives such as crackle, corrosion in advance in the cycle of operation in its serviceable life.The top cover of reactor pressure vessel inspection area comprises the weld seam of whole overlay cladding surfaces, penetration piece and top cover inside surface, and the weld seam of penetration piece (27) or conduit (28) and hydraucone (29).Because One's name is legion, radiation dose height, working environment risk height, and distribution range is wider, so need the high-precision closed-circuit television checking device of a cover comprehensively to check.
Be hemisphere on the top cover of reactor pressure vessel profile, when needs are done the closed-circuit television inspection to changing top cover, it is taken off from pressure vessel, be placed on the biological shielding circle (24), biological shielding circle (24) forms enclosure space with pressure vessels top cover, prevent that the radiant matter in the pressure vessels top cover from leaking, and pollutes environment.The interior welds of pressure vessels top cover the thick overlay cladding of the about 7mm of one deck, many penetration pieces (27) with different high-low impenetratings in the top cover diameter range, and overlay cladding formation ring-type weld seam inner with it, in addition, the lower end of every penetration piece also forms a horn-like weld seam with a horn-like element.Because sealing type internal tank is under the effect of high radiation, high temperature and high pressure for a long time, make the weld seam and the hydraucone weld seam of top cover of reactor pressure vessel inside surface overlay cladding and itself and top penetration piece flaws such as crackle, corrosion very easily occur.
Summary of the invention
The object of the present invention is to provide a kind of closed-circuit television checking device that is used to check nuclear power plant reactor pressure vessels top cover internal state.
To achieve the above object of the invention, the technical solution adopted in the present invention is:
A kind of closed-circuit television checking device that is used to check nuclear power plant reactor pressure vessels top cover internal state, comprise platform locating support and the closed-circuit television checkout facility that is arranged on the platform locating support, the platform locating support comprises that an end and the contacted inner surfaces of the biological shielding circle that is used for the placement force container cap push up the push rod of setting, it also comprises the first pneumatic supporting leg and the second pneumatic supporting leg, the first pneumatic supporting leg, the second pneumatic supporting leg, have two kinds of mated condition between the push rod, first kind is the supporting leg rounding state, the first pneumatic supporting leg, the second pneumatic supporting leg parallels with push rod, second kind is the supporting leg deployed condition, the first pneumatic supporting leg, has certain angle between the second pneumatic supporting leg and the push rod three.
Because the employing of technique scheme, the present invention has the following advantages:
Utilize strut and push rod and reactor vessel pressure vessels top cover and support the good fit of lower inner surface, guarantee that its center accurately is positioned near the top cover of reactor pressure vessel downside center, and as the positioning reference of package unit; This device can be folded into linearity, slide rail by being arranged on the below or roller can be easily push and pull out pressure vessels top cover from the manhole of pressure vessels top cover with this closed-circuit television checking device, reduced the harm that the supervisory personnel is subjected to too much radiation dose.
Description of drawings
Fig. 1 is the vertical view of platform locating support, and the first pneumatic supporting leg, the second pneumatic supporting leg, push rod are in first kind of duty among the figure;
The vertical view of the frame of Fig. 2 platform location, the first pneumatic supporting leg, the second pneumatic supporting leg, push rod are in second kind of duty among the figure;
Fig. 3 is a side sectional view of the present invention;
Wherein: 1, pressure vessels top cover; 2, handwheel; 213, screw mandrel; 3, guide rail; 4, dish shape nut; 51, the first pneumatic supporting leg; 52, the second pneumatic supporting leg; 7, push rod; 161, first supporting leg supports; 162, second supporting leg supports; 21, platform locating support; 22, closed-circuit television checkout facility; 231, first pneumatic cylinder; 232, second pneumatic cylinder; 24, biological shielding circle; 25, limited block; 26, manhole; 27, penetration piece; 28, conduit; 29, hydraucone.
Embodiment
A kind of closed-circuit television checking device that is used to check nuclear power plant reactor pressure vessels top cover 1 inside surface situation comprises platform locating support 21 and the closed-circuit television checkout facility 22 that is arranged on the platform locating support 21.When needs carry out the closed-circuit television inspection to pressure vessels top cover 1, it is taken off, be placed on biological shielding circle 24 tops, the radiant matter that biological shielding circle 24 is used to shield pressure vessels top cover 1 inside leaks, contaminated environment is also brought influence to supervisory personnel healthy.Biological shielding circle 24 is provided with manhole 26, is used to push the closed-circuit television checkout facility.
Closed-circuit television checkout facility 22 is positioned at the end in close pressure vessels top cover 1 center of circle of push rod 7, and push rod 7 is used for determining the origin position of closed-circuit television checkout facility 22,
Have two kinds of mated condition between first pneumatic supporting leg 51, the second pneumatic supporting leg 52, the push rod 7, first kind is the supporting leg rounding state, first pneumatic supporting leg 51, the second pneumatic supporting leg 52 parallels with push rod 7, second kind is the supporting leg deployed condition, has certain angle between first pneumatic supporting leg 51, the second pneumatic supporting leg 52 and push rod 7 threes.
For guaranteeing stability, the first pneumatic supporting leg 51, angle among the second pneumatic supporting leg 52 and push rod 7 threes between any two is 120 °, the first pneumatic supporting leg 51, the second pneumatic supporting leg 52 respectively with the contacted inner surfaces of biological shielding circle 24 top, concrete adopt the following realization that is provided with: platform locating support 21 also comprises and is arranged on the first pneumatic supporting leg 51, between the second pneumatic the supporting leg 52 and end of close pedestal 6 has externally threaded screw mandrel 3, be set on the screw mandrel 3 and have the dish shape nut 4 of the internal thread that is meshed with the external thread of screw mandrel 3, the rotating respectively dish shape nut 4 and the first pneumatic supporting leg 51 of being connected in both ends, first supporting leg between the dish shape nut 4 and the second pneumatic supporting leg 52 supports 161 and second supporting leg and supports 162, the other end of screw mandrel 3 is provided with handwheel 2, and handwheel 2 is positioned at the outside of biological shielding circle 24.The bearing of trend of screw mandrel 3 is opposite with push rod 7, and first pneumatic supporting leg 51, the second pneumatic supporting leg 52 is symmetrical arranged about screw mandrel 3, and first supporting leg supports 161, second supporting leg support 162 and has identical length, and is symmetrical arranged about screw mandrel 3.The other end of first pneumatic supporting leg 51, the second pneumatic supporting leg 52 is respectively arranged with first pneumatic cylinder 231 and second pneumatic cylinder 232 that is used to strengthen the pressure intensity between the two and biological shielding circle 24 inwalls.
At first closed-circuit television checking device is pushed the obturator that pressure vessels top cover 1 and biological shielding circle 24 are formed by manhole 26, this process can be finished by the track or the pulley that are installed in below the device.Insert the back state as shown in Figure 1.Behind the contacted inner surfaces top of push rod 7 and biological shielding circle 24, shake handwheel 2, driving screw mandrel 3 rotates, because screw-threaded engagement effect, the rotation of screw mandrel 3 will cause the rectilinear motion of dish shape nut 4, and dish shape nut 4 supports 161 and second supporting leg by first supporting leg respectively and supports 162 and promote the first pneumatic supporting legs 51 and the second pneumatic supporting leg 52 rotates to the direction of leaving screw mandrel 3, and the angle between the two increases to 120 when spending, dish shape nut 4 arrives at the limited block 25 on the screw mandrel 3, can't move forward.The other end of first pneumatic supporting leg 51, the second pneumatic supporting leg 52 is respectively arranged with first pneumatic cylinder 231 of replacing acting force and second pneumatic cylinder 232 that is used to strengthen between the two and the pressure vessels top cover 1.First pneumatic cylinder 231 and second pneumatic cylinder 232 the steadiness that has guaranteed platform locating support 21 is set, guarantee the effect that closed-circuit television is checked with this, avoid the generation of phenomenons such as rocking.As shown in Figure 2.Afterwards, start closed-circuit television checkout facility 22, pressure vessels top cover 1 inside is checked.
For the ease of the closed-circuit television pick-up unit is pushed pressure vessels top cover, the present invention is provided with and is used for guide platform locating support 21 and enters its inner guide rail 3 by pressure vessels top cover 1 outside.The below of guide rail 3, pedestal 6, push rod 7 is provided with pulley 20.Earlier guide rail 3 is pushed pressure vessels top cover 1 by manhole 26, drill guide rail 3 again device is pushed, pedestal 6 saves time push-on process with the pulley 20 of push rod 7 belows more, and is laborsaving.
Claims (8)
1, a kind of closed-circuit television checking device that is used to check nuclear power plant reactor pressure vessels top cover (1) internal state, comprise platform locating support (21) and be arranged on closed-circuit television checkout facility (22) on the described platform locating support (21), it is characterized in that: described platform locating support (21) comprises the push rod (7) that the contacted inner surfaces top of an end and the biological shielding circle (24) that is used to place described pressure vessels top cover (1) is provided with, it also comprises the first pneumatic supporting leg (51) and the second pneumatic supporting leg (52), the described first pneumatic supporting leg (51), the second pneumatic supporting leg (52), have two kinds of mated condition between the push rod (7), first kind is the supporting leg rounding state, the described first pneumatic supporting leg (51), the second pneumatic supporting leg (52) parallels with described push rod (7), second kind is the supporting leg deployed condition, the described first pneumatic supporting leg (51), has certain angle between the second pneumatic supporting leg (52) and described push rod (7) three.
2, closed-circuit television checking device according to claim 1, it is characterized in that: described platform locating support (21) also comprises pedestal (6), fixedly connected with an end of described pedestal (6) in the other end of described push rod (7), another end of the described first pneumatic supporting leg (51), the second pneumatic supporting leg (51) respectively with rotating connection of described pedestal (7), on the position in close described pressure vessels top cover (1) center of circle of described pedestal (6) described closed-circuit television checkout facility (22) is installed.
3, closed-circuit television checking device according to claim 1, it is characterized in that: when the described first pneumatic supporting leg (51), the second pneumatic supporting leg (52) are in second kind of duty with push rod (7), angle among they three between any two is 120 °, and the described first pneumatic supporting leg (51), the second pneumatic supporting leg (52) push up with the contacted inner surfaces of described biological shielding circle (24).
4, closed-circuit television checking device according to claim 3, its spy is: the other end of the described first pneumatic supporting leg (51), the second pneumatic supporting leg (52) is respectively arranged with first pneumatic cylinder (231) and second pneumatic cylinder (232) that is used to strengthen the pressure intensity between the two and described pressure vessels top cover (1) inwall.
5, closed-circuit television checking device according to claim 1, it is characterized in that: described platform locating support (21) also comprises and is arranged on the described first pneumatic supporting leg (51), between the second pneumatic supporting leg (52) and the end of close described pedestal (6) has externally threaded screw mandrel (3), be set in described screw mandrel (3) and go up and have the dish shape nut (4) of the internal thread that is meshed with the external thread of described screw mandrel (3), the rotating respectively described dish shape nut (4) and the first pneumatic supporting leg (51) of being connected in both ends, first supporting leg between the dish shape nut (4) and the second pneumatic supporting leg (52) supports (161) and second supporting leg supports (162), the other end of described screw mandrel (3) is provided with handwheel (2), and described handwheel (2) is positioned at the outside of described biological shielding circle (24).
6, closed-circuit television checking device according to claim 5, it is characterized in that: the bearing of trend of described screw mandrel (3) is opposite with described push rod (7), the described first pneumatic supporting leg (51), the second pneumatic supporting leg (52) are symmetrical arranged about described screw mandrel (3), described first supporting leg supports (161), second supporting leg supports (162) and has identical length, and is symmetrical arranged about described screw mandrel (3).
7, closed-circuit television checking device according to claim 1 is characterized in that: this closed-circuit television checking device also comprises and is used to guide described platform locating support (21) to enter its inner guide rail (3) by the outside of described biological shielding circle (24).
8, closed-circuit television checking device according to claim 7 is characterized in that: the below of described guide rail (3), pedestal (6), push rod (7) is provided with pulley (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101072389A CN101673584B (en) | 2008-09-28 | 2008-09-28 | Closed circuit television inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101072389A CN101673584B (en) | 2008-09-28 | 2008-09-28 | Closed circuit television inspection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101673584A true CN101673584A (en) | 2010-03-17 |
| CN101673584B CN101673584B (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101072389A Active CN101673584B (en) | 2008-09-28 | 2008-09-28 | Closed circuit television inspection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101673584B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384939A (en) * | 2011-10-17 | 2012-03-21 | 中广核检测技术有限公司 | Method and apparatus for examining eddy current of control rod driving mechanism of CEPR nuclear power station |
| CN102486943A (en) * | 2010-12-02 | 2012-06-06 | 核动力运行研究所 | Automatic shifting platform for welding inspection of adapter of pressure vessel |
| CN102507730A (en) * | 2011-10-17 | 2012-06-20 | 中广核检测技术有限公司 | Probe for inspecting vortex of anti-pressure shell of control rod driving mechanism in CEPR (Centre for Economic Policy Research) nuclear power station |
| CN103863431A (en) * | 2012-12-17 | 2014-06-18 | 核动力运行研究所 | Traveling mechanism of reactor pressure vessel bolt hole closed-circuit television inspection device |
| CN106625327A (en) * | 2016-11-23 | 2017-05-10 | 沈阳黎明航空发动机(集团)有限责任公司 | Small-diameter guide pipe welding seam X-ray inspecting positioning mounting device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2237753Y (en) * | 1995-09-14 | 1996-10-16 | 逯耀华 | Inlet hole of screw spheric cover |
| JP3604535B2 (en) * | 1997-07-17 | 2004-12-22 | 株式会社東芝 | Reactor inspection and repair equipment |
| CN2758938Y (en) * | 2004-12-07 | 2006-02-15 | 张喜华 | Device for repairing main pressure container, main sealing surface and main bolt hole of nuclear power station reactor |
-
2008
- 2008-09-28 CN CN2008101072389A patent/CN101673584B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486943A (en) * | 2010-12-02 | 2012-06-06 | 核动力运行研究所 | Automatic shifting platform for welding inspection of adapter of pressure vessel |
| CN102486943B (en) * | 2010-12-02 | 2014-11-05 | 核动力运行研究所 | Automatic shifting platform for welding inspection of adapter of pressure vessel |
| CN102384939A (en) * | 2011-10-17 | 2012-03-21 | 中广核检测技术有限公司 | Method and apparatus for examining eddy current of control rod driving mechanism of CEPR nuclear power station |
| CN102507730A (en) * | 2011-10-17 | 2012-06-20 | 中广核检测技术有限公司 | Probe for inspecting vortex of anti-pressure shell of control rod driving mechanism in CEPR (Centre for Economic Policy Research) nuclear power station |
| CN103863431A (en) * | 2012-12-17 | 2014-06-18 | 核动力运行研究所 | Traveling mechanism of reactor pressure vessel bolt hole closed-circuit television inspection device |
| CN106625327A (en) * | 2016-11-23 | 2017-05-10 | 沈阳黎明航空发动机(集团)有限责任公司 | Small-diameter guide pipe welding seam X-ray inspecting positioning mounting device |
| CN106625327B (en) * | 2016-11-23 | 2018-07-13 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of small diameter conduits weld seam X-ray examination positioning installation apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101673584B (en) | 2012-11-21 |
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Effective date of registration: 20170104 Address after: 518000 Guangdong city of Shenzhen province Futian District Lotus Street No. 2002 Shennan Avenue South 14 CGN building room 1401 Patentee after: China Guangdong Nuclear Power (Shenzhen) radiation monitoring technology Co., Ltd. Patentee after: Suzhou Nuclear Power Research Institute Address before: The West Loop Jinchang District Suzhou city Jiangsu province 215004 No. 1788 Patentee before: Suzhou Nuclear Power Research Institute |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Futian District Lotus Street No. 2002 Shennan Avenue South 14 CGN building room 1401 Co-patentee after: SUZHOU NUCLEAR POWER Research Institute Patentee after: CGN (Shenzhen) operation technology and radiation monitoring Co., Ltd Address before: 518000 Guangdong city of Shenzhen province Futian District Lotus Street No. 2002 Shennan Avenue South 14 CGN building room 1401 Co-patentee before: SUZHOU NUCLEAR POWER Research Institute Patentee before: CGN (SHENZHEN) RADIATION MONITORING TECHNOLOGY Co.,Ltd. |