CN102436857B - Ray inspection device of voltage stabilizer of European pressurized water reactor (EPR) type nuclear power plant - Google Patents
Ray inspection device of voltage stabilizer of European pressurized water reactor (EPR) type nuclear power plant Download PDFInfo
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- CN102436857B CN102436857B CN2011103271355A CN201110327135A CN102436857B CN 102436857 B CN102436857 B CN 102436857B CN 2011103271355 A CN2011103271355 A CN 2011103271355A CN 201110327135 A CN201110327135 A CN 201110327135A CN 102436857 B CN102436857 B CN 102436857B
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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 discloses a ray inspection device of a voltage stabilizer of a European pressurized water reactor (EPR) type nuclear power plant and is used for performing ray inspection on a welded beam between a lower sealing head of the voltage stabilizer and a surge pipe. The ray inspection device comprises a constraint pipe which is arranged in a manhole of the voltage stabilizer, and a supporting positioning component which can be put into or taken out of the voltage stabilizer by using a dragging component, wherein the supporting positioning component comprises a hollow pipe, an upper supporting frame and a lower supporting frame; the upper supporting frame can be opened in an unfolded or folded mode of a rib and then supported on an inner wall of the voltage stabilizer; and the lower supporting frame can be unfolded along the direction which is vertical to the axis direction of the hollow pipe or folded to the axis direction of the hollow pipe. When the ray inspection device is used, the upper supporting frame and the lower supporting frame are in a folded state, pass through the constraint pipe, and are dragged by using the dragging component to reach preset positions and then put into a ray source for ray inspection. The whole device has a pure mechanical structure, and is energy-saving, environment-friendly, and convenient to operate, transport and carry; an electric power source is not required; and the structure can be matched with an internal structure of the voltage stabilizer of the EPR type nuclear power plant.
Description
Technical field
The present invention relates to a kind of ray inspection arrangement, particularly, relate to the device of the welding seam ray detection between low head in a kind of EPR of being applicable to heap type nuclear power plant voltage stabilizer and the fluctuation pipe.
Background technology
EPR heap type is the third generation pressurized-water reactor nuclear power plant that French Framatome and Siemens are developed jointly, being to design up to now and one of the most advanced presurized water reactor of new generation of technology, also is China's seat of honour, the 3rd the large commercial nuclear power station that adopts the EPR nuclear power technology to build in the whole world.
EPR heap type nuclear power plant voltage stabilizer and the domestic CPR1000 heap type nuclear power plant voltage stabilizer that extensively adopts at present have very big difference, are mainly reflected in the following aspects:
1., at distance manhole upper surface 500 ~ 600mm place 3 water collectors 1 are arranged, it has certain inhibition to ray inspection arrangement;
2., at the about 2100mm of distance manhole upper surface place 3 showers 2 are arranged, as depicted in figs. 1 and 2, its end face and voltage stabilizer central axis have certain inhibition at a distance of 350mm to ray inspection arrangement in transferring process;
3., electrically heated rod dividing plate 4 is individual layer, and central opening is imperfect circle, circular diameter 960mm, A/F 380mm, very big difficulty is brought in this location to x-ray apparatus.
Therefore, be applicable in the conventional art that CPR1000 heap type voltage stabilizer ray inspection arrangement can not adapt to these and change, just need a kind of ray inspection arrangement of the EPR of being applicable to heap type voltage stabilizer badly.
Summary of the invention
The objective of the invention is variation and technical deficiency at above-mentioned inspection environment, provide a kind of EPR of being applicable to heap type nuclear power plant voltage stabilizer to be convenient to the ray inspection arrangement of operating, transporting and carrying.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of EPR heap type nuclear power plant voltage stabilizer ray inspection arrangement, it comprises:
Confinement tube, it is installed in by a fixed head on the manhole flange face of voltage stabilizer,
Traction component, it comprises shaking tray, is rotatably installed in fixed pulley on the described fixed head by support, and the wire rope that an end is fixed on the described shaking tray is walked around described fixed pulley, controls the folding and unfolding of described wire rope by shaking described shaking tray,
Support positioning component, it comprises the hollow tubular that passes through with radiographic source for for inspection, described hollow tubular is provided with upper fixed seat and lower fixed seat, described upper fixed seat is provided with the upper support frame that can launch or draw in as the umbrella frame that with described hollow tubular is axis, when described upper support frame is in deployed condition, it circumferentially pushes against on the inwall of voltage stabilizer, and when described upper support frame was in rounding state, it can pass from described confinement tube with described hollow tubular; Described lower fixed seat is provided with the lower support frame, described lower support frame has rounding state and deployed condition, when described lower support frame is in rounding state, it collapses on the axis direction of described hollow tubular, can pass from described confinement tube with described hollow tubular, when described lower support frame is in deployed condition, it is expanded to radially the direction perpendicular with described hollow tubular axis, and is supported on the described dividing plate and is positioned in the described manhole
The other end of described wire rope is traction end, and this traction end is connected on the described lower support frame and rises or descend with the folding and unfolding of described wire rope in voltage stabilizer to draw described hollow tubular, described upper support frame and described lower support frame.
Preferably, described upper support frame comprises that three ends are hinged on respectively on the described upper fixed seat, the other end is separately installed with the upper support leg of roller, three described upper support legs circumferentially are equally spaced, and equal in length, on the described hollow tubular, be provided with a fixed block between described upper fixed seat and the described lower fixed seat, be arranged with a compression spring on the described hollow tubular, this compression spring is between described upper support frame and described fixed block, one end of the close described upper fixed seat of described compression spring is installed with top shoe, three described upper support legs correspondingly are hinged with auxilliary strut respectively with between the described top shoe, when described support positioning component passes described confinement tube gradually to the direction that enters voltage stabilizer, described upper support frame launches under the effect of the described compression spring that is in compressive state gradually, until each described roller touch voltage stabilizer inwall and along its downslide; When described support positioning component passed described confinement tube in the stabilivolt gradually, described upper support frame drew under the effect of the end of described confinement tube gradually, until passing from described confinement tube fully.
Preferably, described lower support frame comprises that the six roots of sensation one end is hinged on the lower support leg on the described lower fixed seat, the described lower support leg of the six roots of sensation circumferentially is equally spaced, be provided with sliding block between described lower fixed seat and the described fixed block, the other end of each described lower support leg draws to described sliding block by traction rope respectively, the traction end of described wire rope is fixed on the described sliding block, end away from described holder on each described lower support leg is provided with spacing orienting lug, when described lower support leg is in deployed condition, described spacing orienting lug pushes against on the hole wall of described manhole, the length of described traction rope greater than the tie point of itself and described lower support leg to the distance between the described lower fixed seat.
Preferably, the length of described confinement tube arrives the distance of the manhole upper surface of voltage stabilizer greater than the minimum point of described water collector opening part.
Preferably, the length of described hollow tubular is greater than the minimum point of the described shower distance to the manhole upper end of voltage stabilizer.
Preferably, the inside of described hollow tubular is provided with the stem pipe for radiological survey X.
Preferably, the attachment weld below between described low head and the affiliated fluctuation pipe is provided with a film pallet, and the position of corresponding described weld seam circumferentially is provided with a circle film in the described film pallet.
The invention has the beneficial effects as follows: whole device is pure physical construction, do not need electric composition, with low cost, reliable in action, whole device is in the process that enters voltage stabilizer inside or take out from voltage stabilizer, all by the confinement tube that is arranged on the man-hole opening end support positioning component is drawn in, when entering voltage stabilizer, the length of confinement tube guarantee the upper support frame opened gradually not can and water collector between interfere, upper support frame rolls by the inwall of roller at voltage stabilizer, to prevent that the inwall of voltage stabilizer is caused damage; The length assurance lower support frame of hollow tubular is opened below shower, in order to avoid and bump between it, dropping to lower support frame on the dividing plate feels relieved by the guide-localization piece on it and locatees, because the other square hole that also offers of the manhole on the dividing plate, so the quantity of lower support leg is designed to 6, no matter to guarantee whether have the lower support leg to fall into square hole, can both locate reposefully, for accurate radiological survey X work provides sound assurance, its structural design can adapt to the inner structure of EPR heap type nuclear power plant voltage stabilizer fully, is adapted at widespread use in the radiological survey X of EPR heap type nuclear power plant voltage stabilizer.
Description of drawings
Accompanying drawing 1 is the use view (skeleton view) of ray inspection arrangement of the present invention;
Accompanying drawing 2 be in the accompanying drawing A-A to cut-open view;
Accompanying drawing 3 passes the synoptic diagram one of confinement tube for the support positioning component in the ray inspection arrangement of the present invention;
Accompanying drawing 4 passes the synoptic diagram two of confinement tube for the support positioning component in the ray inspection arrangement of the present invention;
Accompanying drawing 5 passes the synoptic diagram three of confinement tube for the support positioning component in the ray inspection arrangement of the present invention.
In the accompanying drawing: 1, water collector; 2, shower; 3, electrically heated rod; 4, dividing plate; 5, low head; 6, fluctuation pipe; 7, weld seam; 8, confinement tube; 9, fixed head; 10, shaking tray; 11, fixed pulley; 12, wire rope; 13, hollow tubular; 14, upper fixed seat; 15, lower fixed seat; 16, upper support leg; 17, fixed block; 18, compression spring; 19, top shoe; 20, auxilliary strut; 21, lower support leg; 22, sliding block; 23, spacing orienting lug; 24, traction rope; 25, stem pipe; 26, film pallet; 27, roller.
Embodiment
Below in conjunction with embodiment shown in the drawings technical scheme of the present invention is done following detailed description the in detail:
The circumferential equal altitudes in top of EPR heap type nuclear power plant voltage stabilizer is provided with three water collectors 1, be lower than described water collector 1 circumferential equal altitudes has been disposed radially three showers 2, the lower horizontal of EPR heap type nuclear power plant voltage stabilizer is provided with for the fixing dividing plate 4 of electrically heated rod 3, these dividing plate 4 centers offer the manhole that a diameter is 960mm, this manhole place extends radially outwardly and offers the square through hole that a width is 380mm, and the low head 5 of EPR heap type nuclear power plant voltage stabilizer welds mutually with fluctuation pipe 6 and forms circumferential weld seam 7.
As accompanying drawing 1 to shown in the accompanying drawing 5, low head 5 for EPR heap type nuclear power plant voltage stabilizer of the present invention welds mutually with fluctuation pipe 6 and device that the circumferential weld seam 7 that forms carries out radiological survey X comprises: confinement tube 8, traction component and support positioning component, confinement tube 8 is installed on the manhole flange face of voltage stabilizer by a fixed head 9, traction component comprises shaking tray 10, be rotatably installed in fixed pulley 11 on the fixed head 9 by support, the wire rope 12 that one end is fixed on the shaking tray 10 is walked around fixed pulley 11, by shaking the folding and unfolding of shaking tray 10 control wire rope 12, support positioning component and comprise the hollow tubular 13 that passes through with radiographic source for for inspection, hollow tubular 13 is provided with upper fixed seat 14 and lower fixed seat 15, upper fixed seat 14 is provided with the upper support frame that can launch or draw in as the umbrella frame that with hollow tubular 13 is axis, when upper support frame is in deployed condition, it circumferentially pushes against on the internal perisporium of voltage stabilizer, when upper support frame was in rounding state, it can pass from confinement tube 8 with hollow tubular 13; Lower fixed seat 15 is provided with the lower support frame, the lower support frame has folding rounding state and deployed condition, instantly bracing frame is in when folding rounding state, it collapses on the prolongation axis direction of hollow tubular 13, can from confinement tube 8, pass with hollow tubular 13, when bracing frame is in deployed condition instantly, it is expanded to radially the state direction perpendicular with hollow tubular 13 axis, and be supported on the dividing plate 4, and be positioned in the manhole, the other end of wire rope 12 is traction end, this traction end is connected on the lower support frame with traction hollow tubular 13, upper support frame and lower support frame rise or descend with the folding and unfolding of wire rope 12 in voltage stabilizer: upper support frame comprises that three ends are hinged on respectively on the upper fixed seat 14, the other end is separately installed with the upper support leg 16 of roller 27, three upper support legs 16 circumferentially are equally spaced, and equal in length, on the hollow tubular 13, be provided with a fixed block 17 between upper fixed seat 14 and the lower fixed seat 15, be arranged with a compression spring 18 on the hollow tubular 13, this compression spring 18 is between upper support piece and fixed block 17, one end of the close upper fixed seat 14 of spring is installed with top shoe 19, three upper support legs 16 correspondingly are hinged with auxilliary strut 20 respectively with between the top shoe 19, when the support positioning component passes confinement tube 8 gradually to the direction that enters voltage stabilizer, upper support frame launches under the effect of the compression spring 18 that is in compressive state gradually, until each roller 27 touch voltage stabilizer inwall and along its downslide; When supporting positioning component and pass confinement tube 8 gradually in the stabilivolt, upper support frame draws under the effect of the end of confinement tube 8 gradually, until passing from confinement tube 8 fully; The lower support frame comprises that the six roots of sensation one end is hinged on the lower support leg 21 on the lower fixed seat 15, six roots of sensation lower support leg 21 circumferentially is equally spaced, be provided with sliding block 22 between lower fixed seat 15 and the fixed block 17, the other end of each lower support leg 21 draws to sliding block 22 by traction rope 24 respectively, the traction end of wire rope 12 is fixed on the sliding block 22, end away from holder on each lower support leg 21 is provided with spacing orienting lug 23, when supporting leg 21 is in deployed condition instantly, spacing orienting lug 23 pushes against on the hole wall of manhole, the length of traction rope 24 greater than the tie point of itself and lower support leg 21 to the distance between the lower fixed seat 15, wherein, the height sum after the length of above-mentioned confinement tube 8 and upper support frame launch arrives the distance of the manhole upper end of voltage stabilizer greater than the minimum point of water collector 1 opening part; The length of above-mentioned hollow tubular 13 is greater than the minimum point of shower 2 distance to the manhole upper end of voltage stabilizer, the inside, lower end of hollow tubular 13 is provided with and is used to inspection with the stem pipe 25 of the radiological survey X of radiographic source guiding, attachment weld 7 belows between low head 5 and the fluctuation pipe 6 are provided with a film pallet 26, and the position of corresponding weld seam 7 circumferentially is provided with a circle film in the film pallet 26.
The course of work of whole testing fixture: earlier the folding and unfolding assembly is fixed by bolts on the manhole flange face, operator's hand-held supports positioning component, this moment is because the deadweight of operator's curable grip and lower support leg 21 makes upper support frame, the lower support frame all is in rounding state (shown in the accompanying drawing 3), slowly transfer by about bundled tube, when each upper support leg 16 ends are exposed about bundled tube lower surface gradually, upper support leg 16 will open under the effect of compression spring 18 gradually, at this moment, because operator's hand-held supports positioning component, there is not steel wire to pull, lower support leg 21 is understood the state (shown in the accompanying drawing 4) that always remain retracted under the gravity effect, the operator continues to transfer the support positioning component, when the last plane of lower fixed seat 15 surpasses the lower surface of shower 2 slightly, the operator adjusted wire rope 12 and made it to supporting positioning component certain pulling force be arranged this moment, slowly remove the effect of contraction of hand then, like this under the gravity effect, hollow tubular 13 can move downward by relative sliding block 22, lower support leg 21 is opened, just avoided the interference (shown in the accompanying drawing 5) between itself and the shower 2, after this, continue to transfer steel wire, become relaxed state until steel wire by tensioning state, show equipment installation.The process that reclaims is just in time opposite with said process, make device rise to the position that personnel can catch hollow tubular 13 by shaking tray 10, loosen wire rope 12, because the deadweight of lower support leg 21, the gathering of overturning downwards of lower support frame is drawn the support positioning component on this moment, because the effect of contraction of confinement tube 8, upper support frame is close to gathering to hollow tubular 13 gradually, passes from confinement tube 8 and takes out until whole positioning supports assembly.
The whole device of the present invention's design is pure physical construction, do not need electric composition, with low cost, reliable in action, whole device is in the process that enters voltage stabilizer inside or take out from voltage stabilizer, all will support positioning component by the confinement tube 8 that is arranged on the man-hole opening end draws in, when entering voltage stabilizer, the length of confinement tube 8 guarantee the upper support frame opened gradually not can and water collector 1 between interfere, upper support frame rolls by the inwall of roller 27 at voltage stabilizer, to prevent that the internal face of voltage stabilizer is caused damage; The length assurance lower support frame of hollow tubular 13 is opened below shower 2, in order to avoid and bump between it, dropping to lower support frame on the dividing plate 4 feels relieved by the spacing orienting lug 23 on it and locatees, because the other square hole that also offers of the manhole on the dividing plate 4, so the quantity of lower support leg 21 is designed to 6, no matter to guarantee whether have lower support leg 21 to fall into square hole, can both locate reposefully, for accurate radiological survey X work provides sound assurance, its structural design can adapt to the inner structure of EPR heap type nuclear power plant voltage stabilizer fully, is adapted at widespread use in the radiological survey X of EPR heap type nuclear power plant voltage stabilizer.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. EPR heap type nuclear power plant voltage stabilizer ray inspection arrangement, the circumferential equal altitudes in top of EPR heap type nuclear power plant voltage stabilizer is provided with three water collectors, be lower than the circumferential equal altitudes of described water collector and be disposed radially three showers, the lower horizontal of EPR heap type nuclear power plant voltage stabilizer is provided with for the fixing dividing plate of electrically heated rod, this dividing plate center offers the manhole that a diameter is 960mm, this manhole place extends radially outwardly and offers the square through hole that a width is 380mm, the low head of EPR heap type nuclear power plant voltage stabilizer welds and forms circumferential weld seam mutually with the fluctuation pipe, and should be characterised in that for the device that this weld seam is carried out radiological survey X: it comprises:
Confinement tube, it is installed in by a fixed head on the manhole flange face of voltage stabilizer,
Traction component, it comprises shaking tray, is rotatably installed in fixed pulley on the described fixed head by support, and the wire rope that an end is fixed on the described shaking tray is walked around described fixed pulley, controls the folding and unfolding of described wire rope by shaking described shaking tray,
Support positioning component, it comprises the hollow tubular that passes through with radiographic source for for inspection, described hollow tubular is provided with upper fixed seat and lower fixed seat, described upper fixed seat is provided with the upper support frame that can launch or draw in as the umbrella frame that with described hollow tubular is axis, when described upper support frame is in deployed condition, it circumferentially pushes against on the internal perisporium of voltage stabilizer, when described upper support frame was in rounding state, it can pass from described confinement tube with described hollow tubular; Described lower fixed seat is provided with the lower support frame, described lower support frame has rounding state and deployed condition, when described lower support frame is in rounding state, it collapses on the axis direction of described hollow tubular, can pass from described confinement tube with described hollow tubular, when described lower support frame is in deployed condition, it is expanded to radially the direction perpendicular with described hollow tubular axis, and is supported on the described dividing plate and is positioned in the described manhole
The other end of described wire rope is traction end, and this traction end is connected on the described lower support frame and rises or descend with the folding and unfolding of described wire rope in voltage stabilizer to draw described hollow tubular, described upper support frame and described lower support frame.
2. EPR heap type nuclear power plant voltage stabilizer ray inspection arrangement according to claim 1, it is characterized in that: described upper support frame comprises that three ends are hinged on respectively on the described upper fixed seat, the other end is separately installed with the upper support leg of roller, three described upper support legs circumferentially are equally spaced, and equal in length, on the described hollow tubular, be provided with a fixed block between described upper fixed seat and the described lower fixed seat, be arranged with a compression spring on the described hollow tubular, this compression spring is between described upper support frame and described fixed block, one end of the close described upper fixed seat of described compression spring is equipped with top shoe, three described upper support legs correspondingly are hinged with auxilliary strut respectively with between the described top shoe, when described support positioning component passes described confinement tube gradually to the direction that enters voltage stabilizer, described upper support frame launches under the effect of the described compression spring that is in compressive state gradually, until each described roller touch voltage stabilizer inwall and along its downslide; When described support positioning component passed described confinement tube in the stabilivolt gradually, described upper support frame drew under the effect of the end of described confinement tube gradually, until passing from described confinement tube fully.
3. EPR heap type nuclear power plant voltage stabilizer ray inspection arrangement according to claim 2, it is characterized in that: described lower support frame comprises that the six roots of sensation one end is hinged on the lower support leg on the described lower fixed seat, the described lower support leg of the six roots of sensation circumferentially is equally spaced, be provided with sliding block between described lower fixed seat and the described fixed block, the other end of each described lower support leg draws to described sliding block by traction rope respectively, the traction end of described wire rope is fixed on the described sliding block, end away from described holder on each described lower support leg is provided with spacing orienting lug, when described lower support leg is in deployed condition, described spacing orienting lug pushes against on the hole wall of described manhole, the length of described traction rope greater than the tie point of itself and described lower support leg to the distance between the described lower fixed seat.
4. according to claim 2 or 3 described EPR heap type nuclear power plant voltage stabilizer ray inspection arrangement, it is characterized in that: the length of described confinement tube arrives the distance of the manhole upper surface of voltage stabilizer greater than the minimum point of described water collector opening part.
5. EPR heap type nuclear power plant voltage stabilizer ray inspection arrangement according to claim 1 is characterized in that: the length of described hollow tubular is greater than the minimum point of the described shower distance to the manhole upper end of voltage stabilizer.
6. EPR heap type nuclear power plant voltage stabilizer ray inspection arrangement according to claim 1, it is characterized in that: the inside of described hollow tubular is provided with the stem pipe for radiological survey X.
7. EPR heap type nuclear power plant voltage stabilizer ray inspection arrangement according to claim 1, it is characterized in that: the attachment weld below between described low head and the described fluctuation pipe is provided with a film pallet, and the position of corresponding described weld seam circumferentially is provided with a circle film in the described film pallet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103271355A CN102436857B (en) | 2011-10-25 | 2011-10-25 | Ray inspection device of voltage stabilizer of European pressurized water reactor (EPR) type nuclear power plant |
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| CN2011103271355A CN102436857B (en) | 2011-10-25 | 2011-10-25 | Ray inspection device of voltage stabilizer of European pressurized water reactor (EPR) type nuclear power plant |
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| CN102759537A (en) * | 2012-07-17 | 2012-10-31 | 中广核检测技术有限公司 | Radiographic testing method for welding beams under radioactive environment of nuclear power station |
| CN104112484B (en) * | 2014-07-17 | 2017-06-20 | 中广核工程有限公司 | Nuclear power plant containment shell machinery penetration piece and its weld seam inservice inspection method and apparatus |
| CN109273117A (en) * | 2018-09-27 | 2019-01-25 | 中广核检测技术有限公司 | A kind of nuclear power plant voltage stabilizer ray inspection arrangement |
| CN113233384B (en) * | 2021-05-17 | 2022-08-26 | 济南华北升降平台制造有限公司 | Tool and equipment for disassembling and assembling tuyere middle sleeve of iron-making blast furnace |
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| CN1925062A (en) * | 2006-10-13 | 2007-03-07 | 核动力运行研究所 | Connector welding seam ray detection and location device for nuclear power station voltage regulator fluctuation pipe |
| CN101770823A (en) * | 2010-01-22 | 2010-07-07 | 中广核检测技术有限公司 | Welding line X-ray inspection device between lower seal head of voltage stabilizer and surge nozzle in nuclear power station |
| KR101002628B1 (en) * | 2008-08-28 | 2010-12-20 | 두산중공업 주식회사 | Apparatus for automatically overlay welding, inspecting and processing nozzzle part having different kind metals of pressurizer in nuclear power plant and method thereof |
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| FR2914101B1 (en) * | 2007-03-22 | 2010-12-17 | Areva Np | NUCLEAR PRESSURIZER WITH WATER UNDER PRESSURE |
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|---|---|---|---|---|
| CN1925062A (en) * | 2006-10-13 | 2007-03-07 | 核动力运行研究所 | Connector welding seam ray detection and location device for nuclear power station voltage regulator fluctuation pipe |
| KR101002628B1 (en) * | 2008-08-28 | 2010-12-20 | 두산중공업 주식회사 | Apparatus for automatically overlay welding, inspecting and processing nozzzle part having different kind metals of pressurizer in nuclear power plant and method thereof |
| CN101770823A (en) * | 2010-01-22 | 2010-07-07 | 中广核检测技术有限公司 | Welding line X-ray inspection device between lower seal head of voltage stabilizer and surge nozzle in nuclear power station |
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Address after: Futian District, Shenzhen City Road 518000 Guangdong Province Science & Technology Building 1001, 1506 Patentee after: CGNPC Inspection Technology Co., Ltd. Patentee after: China General Nuclear Power Corporation Patentee after: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Address before: Futian District, Shenzhen City Road 518000 Guangdong Province Science & Technology Building 1001, 1506 Patentee before: CGNPC Inspection Technology Co., Ltd. Patentee before: China Guangdong Nuclear Power Group Co., Ltd. Patentee before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. |