CN101073856B - Apparatus and method for welding strap connections and spacer grid manufactured using the same - Google Patents
Apparatus and method for welding strap connections and spacer grid manufactured using the same Download PDFInfo
- Publication number
- CN101073856B CN101073856B CN2007100881343A CN200710088134A CN101073856B CN 101073856 B CN101073856 B CN 101073856B CN 2007100881343 A CN2007100881343 A CN 2007100881343A CN 200710088134 A CN200710088134 A CN 200710088134A CN 101073856 B CN101073856 B CN 101073856B
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- China
- Prior art keywords
- laser
- laser tool
- grid spacer
- connecting portion
- band
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0652—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising prisms
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
- G21C3/34—Spacer grids
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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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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Laser Beam Processing (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Disclosed are an apparatus and method for welding strap connections between inner grid straps of a spacer grid using a laser tool, and a spacer grid manufactured by the same, in which the strap connections between the inner grid straps of the spacer grid are seam-welded continuously or intermittently using the laser tool, so that the structural strength of the spacer grid is increased, a spattering phenomenon, in which a welded material is spattered during welding, is reduced, and thermal deformation is reduced. Further, fine welding is possible, and thus the welded bead of each strap connection between the inner grid straps can have a small size, and the number of welding defects can be reduced. In addition, the flow resistance of a coolant is reduced, and thereby the pressure drop of the coolant can be reduced. As a result, the load on a flow pump for the coolant can be reduced, and economic efficiency and safety can be improved.
Description
Technical field
The apparatus and method of the band connecting portion between the interior screen work band that the present invention relates to use laser cell to weld grid spacer, and the grid spacer that uses its manufacturing, and, the apparatus and method of the band connecting portion between the interior screen work band that the present invention relates more specifically to use laser cell to weld grid spacer, and the grid spacer that uses its manufacturing, wherein, band connecting portion between the interior screen work band of grid spacer is the continuous or stitch-and-seam welding of quilt by using laser cell, thereby improved the structural strength of grid spacer, reduced the splash phenomena that the weld period materials to be welded splashes, and reduced thermal deformation, this makes precision welding be connected into for possibility, thereby, the welding bead of each the band connecting portion between the interior screen work band can have reduced size, and the quantity of weld defect can access minimizing, and, wherein, the flow resistance of cooling agent is lowered, thereby make the pressure drop of cooling agent be reduced, and the load on the cooling agent stream pump (flowpump) can be reduced.
Background technology
Generally speaking, grid spacer is by becoming matrix with the screen work strap arrangements and weld its cross-shaped portion (intersection) and play the effect of supporting and keeping the nuclear fuel cluster, and wherein, each screen work band has spacer grid spring and dimple (dimple).
At present, the cross-shaped portion that grid spacer on sale is arranged to by spot welding between the screen work band of matrix on the market is used.Therefore, the welding method of cross-shaped portion and quality have appreciable impact to the structural behaviour of grid spacer.
Such grid spacer can improve structural behaviour by welding method and the quality of improving cross-shaped portion, thereby, can significantly improve the characteristic of nuclear fuel.
The cross-shaped portion of the grid spacer of the fuel rod in the light-water reactor between interior screen work band, the cross-shaped portion between the inside and outside screen work band and outside corner connection portion place between the screen work band have Welding Structure basically.At present, when grid spacer is made by domestic fuel making merchant, the corner connection portion between the outer screen work band by using laser by spot welding, and the cross-shaped portion between the interior screen work band also by using laser by spot welding.
Simultaneously, the technology of the cross-shaped portion between the screen work band is to use 6 or 7 points to fetch by Laser Welding to carry out in the present spot welding.After this manner, then splash in grid spacer splash phenomena on every side because of the weld period materials to be welded takes place in welding.
In addition, in spot-welding technology, can cause the change in size and the thermal deformation of grid spacer from the high heat of laser generation.Thereby, must extra care.
As mentioned above, the cross-shaped portion between the interior screen work band of welding grid spacer as shown in fig. 1, is to be undertaken by the interior screen work band 140a of welding grid spacer 100 and the band connecting portion 150 between the 140b with the conventional method of support core fuel rod.In this welding method, the weld size after the welding is big, thus can not realize accurate welding, and the pressure drop of flowing coolant uprises greatly because of welding bead in the reactor core.
The conventional method of welding grid spacer causes the thermal deformation of splash phenomena and some postwelding.Thereby, can not realize accurate welding, the weld size of the cross-shaped portion in the grid spacer is bigger, and the flow resistance of cooling agent increases.Finally, the pressure drop of cooling agent increases, and this causes the load of cooling agent stream pump to increase.For structural strength that improves grid spacer and the pressure drop that reduces cooling agent, must develop the new method of welding grid spacer.
For this purpose, key is the solder technology that ultraprecise laser and optical transmission means are used in exploitation.In other words, use the grid spacer welding of ultraprecise laser to bring thermal deformation hardly and make precision be welded into possibility, thereby welding bead can have less size, the pressure drop of cooling agent can be reduced, and the structural strength of grid spacer can be significantly increased.
Therefore, the welding method that will develop future is an essential technology for the nuclear fuel development of nuclear power station, expects that such technological development will be carried out in developed country sooner or later energetically.
Specifically, the cross-shaped portion spot welding method that carries out at the upper and lower end place of grid spacer has big welding bead and brings big pressure drop, and has reduced circulation area, thereby it significantly improves the load of cooling medium pump, and reduces the nuclear reactor structure Design free degree.For this reason, for the machinery/structural stability of the grid spacer that improves the nuclear fuel cluster and reduce the pressure drop of cooling agent, need to introduce new high-tech solder technology.
Summary of the invention
Therefore, consider and abovely be present in the problems of the prior art and made the present invention, and, the object of the present invention is to provide the apparatus and method of the band connecting portion between the interior screen work band that uses laser cell welding grid spacer, and the grid spacer that uses its manufacturing, wherein, band connecting portion between the interior screen work band of grid spacer is the continuous or stitch-and-seam welding of quilt by using laser cell, thereby improved the structural strength of grid spacer, reduced the splash phenomena that the weld period materials to be welded splashes, and reduced thermal deformation, this makes precision welding be connected into for possibility, thereby, the welding bead of each the band connecting portion between the interior screen work band can have reduced size, and the quantity of weld defect can access minimizing, and, wherein, the flow resistance of cooling agent is lowered, thereby makes the pressure drop of cooling agent be reduced, and the load on the cooling agent stream pump can be reduced.
In order to realize above purpose, according to an aspect of the present invention, the device of the band connecting portion between a kind of interior screen work band that uses laser cell welding grid spacer is provided, wherein, in the grid spacer of nuclear fuel bundle, between the interior screen work band and the band connecting portion between the inside and outside screen work band soldered.Described device comprises: laser cell, described laser cell comprises a pair of laser tool, tabular connector and optical fiber, wherein, described a pair of laser tool has cylindrical shape and is spaced from each other predetermined space, described tabular attaching parts are inserted between the described laser tool to connect described laser tool, described optical fiber is inserted into and is connected to the upper end of described laser tool by the joints of optical fibre, and the transmission laser beam; And controller, described controller comprises plate support, movable part and Linear actuator, wherein, one end of described plate support is connected to the center of the tabular connector of described laser cell, one end of described movable part is connected to the other end of described plate support, and an end of described Linear actuator is connected to the other end of described movable part;
Wherein, described device further comprises: grid spacer anchor clamps (50), described grid spacer anchor clamps have the fixing hole (51) that is grid arrangement, so that stationary positioned screen work (3); And laser tool anchor clamps (70), described laser tool anchor clamps have a plurality of bullports (71), so that the laser tool of the described laser cell of vertical fixing (10) (10a and 10b);
Described movable part (33) moves along direction up and down is linear, and described Linear actuator (35) along continuous straight runs is linear mobile.
Preferably, each in the described laser tool can comprise: aim at lens (alignment lens), described aligning lens are arranged on the last inboard of described laser tool, so that aim at the laser beam that is transmitted; Condenser lens, described condenser lens is arranged on the downside of described laser tool, so that focus on the laser beam by described aligning lens; And prism, described prism is arranged under the described condenser lens, so that the laser beam that is focused on by described condenser lens along predetermined direction transmission.
Here, described prism can be set up with miter angle.
Simultaneously, each the comprised through hole in the described laser tool, described through hole are formed on the interior appropriate position of following periphery of described laser tool, so that the laser beam that order is transmitted by each prism passes through.
And each in the described laser tool can be provided with at least one gas line in its appropriate position, so that to described laser tool supply assist gas, and an end of described gas line can be connected near each prism.
In addition, each in the described laser tool can comprise: aim at lens, described aligning lens are arranged on the last inboard of described laser tool, so that aim at the laser beam that is transmitted; Condenser lens, described condenser lens is arranged on the downside of described laser tool, so that focus on the laser beam by described aligning lens; And the concave surface bronze mirror, described concave surface bronze mirror is arranged under the described condenser lens, so that the laser beam that is focused on by described condenser lens along predetermined direction transmission.
Here, described concave surface bronze mirror can have the inclination angle of 110 degree.
According to a further aspect in the invention, the method of the band connecting portion between the interior screen work band that a kind of device that uses welding band connecting portion welds grid spacer is provided, wherein, described device comprises: laser cell, described laser cell comprise a pair of laser tool that is spaced from each other predetermined space, be inserted between the described laser tool so that connect the tabular connector of described laser tool, at least one gas line of each the supply assist gas in the described laser tool is given in the appropriate position of each in described laser tool, be provided with the joints of optical fibre so that the optical fiber of transmission laser beam, and have along downward direction and be arranged sequentially in aligning lens in the described laser tool, the optical system of condenser lens and prism; Described controller comprises plate support (31), movable part (33) and Linear actuator (35), wherein, one end of described plate support is connected to the center of the tabular connector (11) of described laser cell (10), one end of described movable part is connected to the other end of described plate support (31), one end of described Linear actuator is connected to the other end of described movable part (33), described movable part (33) moves along direction up and down is linear, and described Linear actuator (35) along continuous straight runs is linear mobile; The laser tool anchor clamps; And grid spacer anchor clamps.Said method comprising the steps of: described grid spacer is fixed to described grid spacer anchor clamps; Control described controller and drive precalculated position above the band connecting portion of described laser cell between the interior screen work band of grid spacer along x, y and z direction; Controlling described controller moves described movable part and described laser tool is inserted around the band connecting portion between the interior screen work band of grid spacer along vertical direction; In the time of around the band connecting portion between the interior screen work band that described laser tool is inserted grid spacer, the bullport towards described laser tool anchor clamps guides described laser tool in vertical direction, and described laser tool is inserted described bullport; By described Optical Fiber Transmission laser beam, wherein, described optical fiber is introduced into by the joints of optical fibre on the described laser tool upper end; The laser beam of transmission by described optical fiber put on described aligning lens on the last inboard that is arranged on described laser tool; Focussed laser beam, wherein, this laser beam is by described aligning lens alignment and be transferred on the described condenser lens, and described condenser lens is arranged under the described aligning lens; The laser beam that is focused on by described condenser lens by the prismatic reflection that is arranged under the described condenser lens; And pass through by the band connecting portion between the interior screen work band of the LASER BEAM WELDING grid spacer of described prismatic reflection.
Simultaneously, described method can further may further comprise the steps: discharge assist gas from described gas line, in case the band connecting portion between the interior screen work band of fastening position screen work is oxidized.
Preferably, described method can further may further comprise the steps: by the laser tool around the band connecting portion between the interior screen work band that is inserted into grid spacer, weld the band connecting portion between the interior screen work band of grid spacer continuously or intermittently.
Description of drawings
From subsequently in conjunction with the accompanying drawings the detailed description to embodiment, will more be expressly understood above and other purpose of the present invention, feature and other advantages, in the accompanying drawings:
Fig. 1 schematically illustrates a state that cross-shaped portion is welded by the traditional welding machine between the interior screen work band of nuclear fuel cluster grid spacer;
Fig. 2 schematically illustrates the device according to the band connecting portion between the interior screen work band of embodiments of the invention, use laser cell welding grid spacer;
Fig. 3 is a cutaway view, and diagram is according to the laser tool of the device of the band connecting portion between the interior screen work band of embodiments of the invention, use laser cell welding grid spacer;
Fig. 4 schematically illustrates the operation according to the device of the band connecting portion between the interior screen work band of embodiments of the invention, use laser cell welding grid spacer;
Fig. 5 is a cutaway view, schematically illustrates according to embodiments of the invention, when the device of the band connecting portion between the interior screen work band that uses laser cell welding grid spacer is disposed between the interior screen work band of grid spacer, carries out the technical process of laser weld;
Fig. 6 is a perspective view, schematically illustrates according to embodiments of the invention, is applied to using the grid spacer anchor clamps of the device of the band connecting portion between the interior screen work band of laser cell welding grid spacer;
Fig. 7 is a perspective view, schematically illustrates according to embodiments of the invention, is applied to using the laser tool anchor clamps of the device of the band connecting portion between the interior screen work band of laser cell welding grid spacer;
Fig. 8,9 and 10 schematically illustrates according to embodiments of the invention, utilize to use the device of the band connecting portion between the interior screen work band of laser cell welding grid spacer to weld the technical process of the band connecting portion between the interior screen work band of grid spacer;
Figure 11 is a flow chart, diagram according to embodiments of the invention, utilize to use the device of the band connecting portion between the interior screen work band of laser cell welding grid spacer weld in the technical process of band connecting portion between the screen work band;
Figure 12 schematically illustrates the state that is used the device continuous welding of the band connecting portion between the interior screen work band of laser cell welding grid spacer according to the band connecting portion between the interior screen work band of embodiments of the invention, grid spacer;
Figure 13 schematically illustrates the state that is used the interrupted welding of device of the band connecting portion between the interior screen work band of laser cell welding grid spacer according to the band connecting portion between the interior screen work band of embodiments of the invention, grid spacer; And
Figure 14 is a perspective view, the device of the band connecting portion between the interior screen work band that schematically illustrate according to another embodiment of the present invention, the use laser cell welds grid spacer.
The specific embodiment
Now will be in more detail with reference to exemplary embodiment of the present invention, these exemplary embodiments are illustrated in the accompanying drawings.Wherever, run through accompanying drawing and description all the time, same Reference numeral will be used to represent same or similar part.
Fig. 2 schematically illustrates the device according to the band connecting portion between the interior screen work band of embodiments of the invention, use laser cell welding grid spacer.Fig. 3 is a cutaway view, and diagram is according to the laser tool in the device of the band connecting portion between the interior screen work band of embodiments of the invention, use laser cell welding grid spacer.Fig. 4 schematically illustrates the operation according to the device of the band connecting portion between the interior screen work band of embodiments of the invention, use laser cell welding grid spacer.Fig. 5 is a cutaway view, schematically illustrates according to embodiments of the invention, when the device of the band connecting portion between the interior screen work band that uses laser cell welding grid spacer is disposed between the interior screen work band of grid spacer, carries out the technical process of laser weld.Fig. 6 is a perspective view, schematically illustrates according to embodiments of the invention, is applied to using the grid spacer anchor clamps of the device of the band connecting portion between the interior screen work band of laser cell welding grid spacer.Fig. 7 is a perspective view, schematically illustrates according to embodiments of the invention, is applied to using the laser tool anchor clamps of the device of the band connecting portion between the interior screen work band of laser cell welding grid spacer.Fig. 8,9 and 10 schematically illustrates according to embodiments of the invention, utilize to use the device of the band connecting portion between the interior screen work band of laser cell welding grid spacer to weld the technical process of the band connecting portion between the interior screen work band of grid spacer.Figure 11 is a flow chart, diagram according to embodiments of the invention, utilize to use the device of the band connecting portion between the interior screen work band of laser cell welding grid spacer weld in the technical process of band connecting portion between the screen work band.
Illustrated among the figure, according to embodiments of the invention, use the device of the band connecting portion between the interior screen work band of laser cell welding grid spacer to comprise laser cell 10 and controller 30.
Here, among laser tool 10a and the 10b each is provided with: aim at lens (alignmentlens) 15, aim at lens 15 on inboard on the described laser tool, so that aim at the laser beam of transmission by each root optical fiber 12, wherein, each root optical fiber 12 is inserted into and is connected among laser tool 10a and the 10b upper end of each by each joints of optical fibre 12a; Condenser lens 16, condenser lens 16 are on the downside of described laser tool, so that focus on by aiming at the laser beam of lens 15; And prism 17, prism 17 is focused the laser beam that lens 16 focus on condenser lens 16 times so that reflect at a predetermined angle and transmit.
Here, be suitable for being reflected by aiming at laser beam that lens 15 and condenser lens 16 be aligned in laser tool 10a and 10b each from the prism 17 that separates predetermined space with condenser lens 16, and the interior screen work band 4a of welding grid spacer 3 and band connecting portion 5a and the 5b between the 4b.At this moment, if be transmitted, aim at, focus on and reflect so that easily weld the interior screen work band 4a of grid spacer 3 and band connecting portion 5a and the 5b between the 4b from the laser beam of external emission, the prism 17 that then is arranged among laser tool 10a and the 10b in each can use convex mirror.
And, although aiming at lens 15, condenser lens 16 and prism 17 is installed among laser tool 10a and the 10b each, if the laser beam that is applied in is focused and reflects with the interior screen work band 4a that easily welds grid spacer 3 and band connecting portion 5a and the 5b between the 4b, then each lens can be selected from the lens of multiple other kinds.
Here, each prism 17 preferably is set up with miter angle.In other words, each prism 17 that is arranged among laser tool 10a and the 10b on each the following inboard is set up with miter angle, so that by aim at laser beam that lens 15 and condenser lens 16 be aligned and focus on by radiation so that in the interior screen work band 4a and band connecting portion 5a and 5b between the 4b of welding grid spacer 3, accurately aim at the welding position of reflection lasering beam.
Here, although each prism 17 is set up with miter angle, yet each prism 17 is not limited in this angle, as long as can accurately be aimed at and put on the interior screen work band 4a of grid spacer 3 and band connecting portion 5a and the 5b between the 4b by prism 17 laser light reflected bundles.
Simultaneously, herein, be arranged on prism 17 reflections in laser tool 10a and the 10b and be aligned the laser beam that lens 15 and condenser lens 16 are aimed at and focused on, with the interior screen work band 4a that easily welds grid spacer 3 and band connecting portion 5a and the 5b between the 4b.Yet each prism 17 can be substituted by concave surface bronze mirror (concave copper mirror) (not shown).
This concave surface bronze mirror preferably has the inclination angle of 110 degree.
Simultaneously, be arranged on the 17 mutual linear symmetric of the prism on the inboard under laser tool 10a and the 10b.In other words, as the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a between the 4b and 5b the time by laser weld, be arranged on that the prism on the inboard 17 is arranged to mutual linear symmetric under laser tool 10a and the 10b, so that use reflection lasering beam between interior screen work band 4a and 4b, weld symmetrical band connecting portion 5a and 5b.
, be arranged on that the prism on the inboard 17 is fixed at a predetermined angle under laser tool 10a and the 10b herein, thereby on position or angle, do not change.So when laser weld, prism 17 is accurately arranged so that adjust interior screen work band 4a and the band connecting portion 5a between the 4b and the welding position of 5b of grid spacer 3.
Simultaneously, through hole 19 is formed on the interior suitable position of the following periphery of each among laser tool 10a and the 10b, so that the laser beam that order is reflected by each prism 17 passes through.
Here, each among laser tool 10a and the 10b is provided with at least one gas line 18 to its supply assist gas in its appropriate position.One end of gas line 18 is connected near each prism 17.In other words, the gas line 18 that extends from the outside is set at the appropriate position of laser tool 10a and 10b periphery respectively, and an end of each bar gas line 18 is connected near the prism 17 on the following inboard that is arranged among laser tool 10a and the 10b each.
The assist gas that is introduced into the prism 17 of each among laser tool 10a and the 10b by each bar gas line 18 is argon (Ar) gas.
As mentioned above, gas line 18 is connected to laser tool 10a and 10b respectively, and is supplied with assist gas.Thereby, prevented that the interior screen work band 4a of grid spacer 3 and band connecting portion 5a and 5b between the 4b are oxidized.
Herein, assist gas Ar gas is supplied in laser tool 10a and the 10b by each bar gas line 18, thereby and prevents that the interior screen work band 4a of grid spacer 3 and band connecting portion 5a and 5b between the 4b are oxidized.Yet, if prevent that easily the interior screen work band 4a of grid spacer 3 and band connecting portion 5a and 5b between the 4b are oxidized, can be by multiple other gases of gas line 18 supplies.
And at least one gas line 18 is installed in the appropriate position of the periphery of each among laser tool 10a and the 10b.Yet each bar gas line 18 can be installed among laser tool 10a and the 10b on the inboard of each.
Here, movable part 33 be suitable for along upwards, downward direction moves, simultaneously, Linear actuator 35 is suitable for moving along horizontal direction.Specifically, when the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a between the 4b and 5b are soldered, move along horizontal direction so that allow to have when the laser cell 10 of laser tool 10a and 10b is set on the interior screen work band 4a of grid spacer 3 and band connecting portion 5a between the 4b and the 5b at Linear actuator 35, movable part 33 moves along vertical direction, inserts around the interior screen work band 4a and band connecting portion 5a and 5b between the 4b of grid spacers 3 so that will have the laser cell 10 of laser tool 10a and 10b.
As mentioned above, laser cell 10 is set on the grid spacer 3 by moving horizontally with vertical the moving of movable part 33 of Linear actuator 35, be inserted into then around the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a and 5b between the 4b, so that band connecting portion 5a and 5b between the interior screen work band 4a of grid spacer 3 and the 4b can be soldered.
Herein, movable part 33 is suitable for linear in vertical direction moving, and still, plate support 31 can move in vertical direction.
And movable part 33 is suitable for linear in vertical direction moving, and still, it can move on vertical and horizontal direction.
Here, according to the present invention, use the device 1 of the interior screen work band of laser cell welding grid spacer to comprise: grid spacer anchor clamps 50, grid spacer anchor clamps 50 stationary positioned screen works 3; With laser tool anchor clamps 70, laser tool anchor clamps 70 guide laser tool 10a and 10b and vertical fixing laser tool 10a and 10b in vertical direction, wherein, laser tool 10a and 10b are inserted into around the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a and 5b between the 4b.
For this purpose, grid spacer anchor clamps 50 have the shape of tabular grid, wherein are formed with a plurality of fixing holes 51, and described a plurality of fixing holes 51 are used for location and stationary positioned screen work 3, and grid spacer anchor clamps 50 are set on the grid spacer 3.
Here, the quantity that is formed on the fixing hole 51 in the grid spacer anchor clamps 50 is preferably corresponding to the quantity of the element grid unit (unit grid cell) (element grid unit is not had given Reference numeral) of grid spacer 3.
Laser tool anchor clamps 70 have hexahedral shape, and have a plurality of guide through hole 71, the quantity of described a plurality of guide through hole 71 is corresponding to the quantity of the band connecting portion 5a and the cross-shaped portion between the 5b of grid spacer 3, wherein, laser tool 10a and 10b are inserted into around the band connecting portion 5a and 5b of grid spacer 3.
Here, each guide through hole 71 of laser tool anchor clamps 70 forms cylindrical, and, around laser tool 10a and 10b are inserted into the band connecting portion 5a of grid spacer 3 and 5b after, laser tool anchor clamps 70 play laser tool 10a and the 10b effect along the vertical direction orientation that keeps.
As mentioned above, when the device of the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a between the 4b and the 5b interior screen work band under the assistance of grid spacer anchor clamps 50 and laser tool anchor clamps 70, by use laser cell welding grid spacer according to the present invention was soldered, grid spacer 3 was easily located and is fixed.In the time of around laser tool 10a and 10b are inserted into the band connecting portion 5a of grid spacer 3 and 5b, laser tool 10a and 10b welding band connecting portion 5a and 5b, and be retained as vertical orientated always.
Hereinafter, describe to utilize use the device of the band connecting portion between the interior screen work band of laser cell welding grid spacer to weld the method for the band connecting portion between the interior screen work band of grid spacer with reference to Fig. 4 to 11.
At first, the workman locatees grid spacer 3 for and is fixed on grid spacer anchor clamps 50 times (S11).At this moment, all fixing holes 51 of grid spacer anchor clamps 50 are placed and are fixed on the upper surface of grid spacer 3.
Then, laser tool anchor clamps 70 are mounted, so that allow laser tool 10a and 10b to be inserted into the top of grid spacer 3 and to be retained as vertical orientated (S11-1), and allow the guide through hole 71 of laser tool anchor clamps 70 and interior screen work band 4a and the band connecting portion 5a between the 4b and the coupling of the cross-shaped portion between the 5b of grid spacer 3.
More particularly, controller 30 is controlled, thereby moves Linear actuator 35 along x, y and z direction, on the interior screen work band 4a and band connecting portion 5a and 5b between the 4b that is positioned at grid spacer 3 with laser tool 10a and 10b with laser cell 10.
Then, controller 30 is controlled, thereby along the linear mobile movable part 33 of vertical direction, thereby the laser cell 10 that will have laser tool 10a and a 10b inserts (S13) around the interior screen work band 4a of grid spacers 3 and band connecting portion 5a between the 4b and the 5b.
At this moment, in the time of around laser tool 10a and 10b are inserted into the interior screen work band 4a of grid spacer 3 and band connecting portion 5a between the 4b and 5b, laser tool 10a and 10b are directed into two guide through hole 71 of laser tool anchor clamps 70, are retained as vertical orientated (S13-1) then.
Then, laser beam is transmitted (S14) from the optical fiber 12 on the upper end that is installed in laser tool 10a and 10b by joints of optical fibre 12a, then, the laser beam that is transmitted is applied in the aligning lens 15 (S15) on the last inboard that is arranged on laser tool 10a and 10b by optical fiber 12.
By this way, the laser beam that is applied in by the optical fiber on the upper end that is installed in laser tool 10a and 10b 12 is being aligned when aiming at lens 15 seeing through, and is focused and is arranged on the condenser lens of aiming at below the lens 15 16 (S16).Being focused laser beam on the condenser lens 16 is reflected to the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a between the 4b and 5b by prism 17 and goes up (S17).
Herein, if substitute prism 17 with concave surface bronze mirror (not shown), then the laser beam that is aligned and focuses on by aligning lens 15 and condenser lens 16 is reflected by the concave surface bronze mirror, welds the interior screen work band 4a of grid spacer 3 and band connecting portion 5a and the 5b between the 4b then.
Here, each concave surface bronze mirror has the inclination angle of 110 degree, so that laser beam can more easily be reflected on band connecting portion 5a and the 5b.
By this way, the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a between the 4b and 5b are by from prism 17 laser light reflected bundle laser weld (S18).
As mentioned above, band connecting portion 5a and laser tool 10a 5b around and the interior screen work band 4a of 10b welding grid spacer 3 and band connecting portion 5a and 5b 4b between of reflection lasering beam by being inserted into grid spacer 3, so that can realize best through welding, and can improve the band connecting portion 5a of grid spacer 3 and the weld strength of 5b.
Here, be inserted into band connecting portion 5a and the 5b (S18-1) that laser tool 10a around the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a between the 4b and the 5b and 10b weld grid spacer 3 continuously or intermittently.In other words, when the laser tool 10a around the band connecting portion 5a between interior screen work band 4a that is inserted into grid spacer 3 and the 4b and the 5b and 10b move up or down along the band connecting portion 5a of grid spacer 3 and 5b, laser tool 10a and 10b apply laser beam continuously to weld the band connecting portion 5a and the 5b of grid spacer 3 fully, perhaps, laser tool 10a and 10b intermittently apply laser beam with the band connecting portion 5a of welding grid spacer 3 and the part of 5b.
At this moment, the speed that laser tool 10a and 10b move up and down is equal to each other, wherein, laser tool 10a and 10b are inserted into around the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a and 5b between the 4b, and weld the band connecting portion 5a and the 5b of grid spacer 3 continuously or intermittently.
After around laser tool 10a and 10b are inserted into the band connecting portion 5a of grid spacer 3 and 5b, the whole band connecting portion 5a of said structure permission grid spacer 3 and 5b are continuously by laser weld, perhaps, allow the part of the going up of the band connecting portion 5a of grid spacer 3 and 5b, centre and downside intermittently by laser weld.
By this way, be inserted into laser tool 10a around the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a between the 4b and the 5b and 10b as shown in Figure 12, the band connecting portion 5a of laser weld grid spacer 3 and 5b's is whole continuously, the concrete position of the band connecting portion 5a of a laser weld grid spacer 3 and 5b intermittently perhaps, as shown in Figure 13.Thereby the band connecting portion 5a and the 5b of grid spacer 3 can be by laser weld.
As mentioned above, after the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a between the 4b and 5b were by laser weld, the interior screen work band 4a of grid spacer 3 and other band connecting portion 5a and the 5b between the 4b were repeated laser weld.Thereby, use according to the present invention, use the device 1 of the interior screen work band of laser cell welding grid spacer to finish laser weld.
At this moment, assist gas is supplied to laser tool 10a and 10b by gas line 18, thereby prevent that the interior screen work band 4a of grid spacer 3 and the band connecting portion 5a between the 4b and 5b from becoming oxidized (S17-1), wherein, laser beam is applied in laser tool 10a and 10b by optical fiber 12.
By this way, the assist gas of supplying by gas line 18 not only plays interior screen work band 4a and band connecting portion 5a between the 4b and the oxidized effect of 5b that prevents grid spacer 3 when carrying out laser weld, also play the effect of protection prism 17.
Figure 14 is a perspective view, the device of the band connecting portion between the interior screen work band that schematically illustrate according to another embodiment of the present invention, the use laser cell welds grid spacer.The difference of the device of the device of this embodiment and first embodiment is, has partly changed laser tool.
As shown in Figure 14, laser tool 10a, the 10b, 10c and the 10d that have varying number according to the device 1 of the band connecting portion between the interior screen work band of another embodiment, use laser cell welding grid spacer, thereby and interior screen work band 4a and 4 connecting portions between the 4b, i.e. band connecting portion 5a, 5b, 5c and the 5d of while laser weld grid spacer 3.
In other words, laser tool 10a, 10b, 10c and 10d are spaced from each other predetermined space, and be inserted into around the interior screen work band 4a and band connecting portion 5a, 5b, 5c and 5d between the 4b of grid spacer 3, wherein, among laser tool 10a, 10b, 10c and the 10d each all has cylindrical, and be arranged with optical fiber 12, and comprise along downward direction and be installed in wherein aligning lens 15, condenser lens 16 and prism 17 in the following order with the situation that has joints of optical fibre 12a in the top.
As mentioned above, laser cell 10 has 4 laser tool 10a, 10b, 10c and 10d, thereby, be inserted into laser tool 10a, 10b, 10c and 10d laser weld band connecting portion 5a, 5b, 5c and 5d on 4 directions simultaneously around the interior screen work band 4a of grid spacer 3 and band connecting portion 5a, 5b, 5c and the 5d between the 4b.Therefore, the interior screen work band 4a of grid spacer 3 and band connecting portion 5a, 5b, 5c and 5d between the 4b can be more fast, easily by laser weld.
For this purpose, laser tool 10a, 10b, 10c and 10d are interconnected with the predetermined space that separates each other by connector 11, and inboard is provided with prism 17 under it, is focused on the interior screen work band 4a and band connecting portion 5a, 5b, 5c and 5d between the 4b of grid spacer 3 from its emitted laser bundle so that allow.
Alternatively, the prism 17 that is arranged on the following inboard of laser tool 10a, 10b, 10c and 10d can substitute with concave surface bronze mirror (not shown).In this case, each concave surface bronze mirror preferably has the inclination angle of 110 degree.
Simultaneously, in this embodiment, although laser cell 10 comprises 4 laser tool 10a, 10b, 10c and 10d, laser cell 10 also can comprise 16 laser tools.Therefore, the present invention is not restricted about the quantity of laser tool.
And, as shown in Fig. 6 and 7, according to another embodiment of the present invention, use the device 1 of the interior screen work band of laser cell welding grid spacer also to comprise: have be grid arrangement fixing hole 51 so that the grid spacer anchor clamps 50 of stationary positioned screen work 3; And laser tool anchor clamps 70, laser tool anchor clamps 70 have a plurality of bullports 71 so that vertically guide laser tool 10a, 10b, 10c and 10d and vertical fixing laser tool 10a, 10b, 10c and 10d, wherein, laser tool 10a, 10b, 10c and 10d are inserted into around the interior screen work band 4a and band connecting portion 5a, 5b, 5c and 5d between the 4b of grid spacer 3.
Apparent from the above description, according to the present invention, band connecting portion between the interior screen work band of grid spacer by using laser cell by continuously or stitch-and-seam welding, so that the splash phenomena that the structural strength of grid spacer is improved, materials to be welded splashes after welding is reduced and reduces thermal deformation.And precision is welded into possibility, thereby the welding bead of each the band connecting portion between the interior screen work band can have reduced size, and the quantity of weld defect can be reduced.In addition, the flow resistance of cooling agent is reduced, thereby the pressure drop of cooling agent can access and reduces.Therefore, the load on the cooling agent stream pump can be lowered, and can improve business efficiency and security.
Although described exemplary embodiment of the present invention for illustrative purposes, yet, those skilled in the art will appreciate that under the situation of disclosed scope of the present invention and marrow in not breaking away from the claim of enclosing multiple modification, interpolation and to substitute all be possible.
Claims (10)
1. the device of the band connecting portion between the interior screen work band that uses laser cell welding grid spacer, wherein, in the grid spacer (3) of nuclear fuel bundle, between the interior screen work band (4a and 4b) and the band connecting portion between the inside and outside screen work band soldered, described device comprises:
Laser cell (10), described laser cell comprises a pair of laser tool (10a and 10b), tabular connector (11) and optical fiber (12), wherein, described a pair of laser tool has cylindrical shape and is spaced from each other predetermined space, described tabular connector is inserted between the described laser tool (10a and 10b) so that connect described laser tool (10a and 10b), described optical fiber is inserted into and is connected to the upper end of described laser tool (10a and 10b) by optical fiber connecting portion device (12a), and transmits laser beam; And
Controller (30), described controller comprises plate support (31), movable part (33) and Linear actuator (35), wherein, one end of described plate support is connected to the center of the tabular connector (11) of described laser cell (10), one end of described movable part is connected to the other end of described plate support (31), one end of described Linear actuator is connected to the other end of described movable part (33)
Wherein, described device further comprises: grid spacer anchor clamps (50), described grid spacer anchor clamps have the fixing hole (51) that is grid arrangement, so that stationary positioned screen work (3); And laser tool anchor clamps (70), described laser tool anchor clamps have a plurality of bullports (71), so that the laser tool of the described laser cell of vertical fixing (10) (10a and 10b);
Described movable part (33) moves along direction up and down is linear, and described Linear actuator (35) along continuous straight runs is linear mobile.
2. device as claimed in claim 1, wherein, each in the described laser tool (10a and 10b) comprises: aim at lens (15), described aligning lens are arranged on the last inboard of described laser tool, so that aim at the laser beam that is transmitted; Condenser lens (16), described condenser lens is arranged on the downside of described laser tool, so that focus on the laser beam by described aligning lens (15); And prism (17), described prism is arranged under the described condenser lens (16), so that transmit by the laser beam of described condenser lens (16) focusing along predetermined direction.
3. device as claimed in claim 2, wherein, described prism (17) is set up with miter angle.
4. device as claimed in claim 2, wherein, in the described laser tool (10a and 10b) each comprises through hole (19), and described through hole is formed on the appropriate position in the periphery under the described laser tool, so that the laser beam that order is transmitted by each prism (17) passes through.
5. device as claimed in claim 2, wherein, in the described laser tool (10a and 10b) each is provided with at least one gas line (18) in its appropriate position, so that to described laser tool supply assist gas, and an end of described gas line (18) is connected near each prism (17).
6. device as claimed in claim 1, wherein, each in the described laser tool (10a and 10b) comprises: aim at lens (15), described aligning lens are arranged on the last inboard of described laser tool, so that aim at the laser beam that is transmitted; Condenser lens (16), described condenser lens is arranged on the downside of described laser tool, so that focus on the laser beam by described aligning lens (15); And the concave surface bronze mirror, described concave surface bronze mirror is arranged under the described condenser lens (16), so that transmit by the laser beam of described condenser lens (16) focusing along predetermined direction.
7. device as claimed in claim 6, wherein, described concave surface bronze mirror has the inclination angle of 110 degree.
8. a device that uses welding band connecting portion welds the method for the band connecting portion between the interior screen work band of grid spacer, wherein, described device comprises: laser cell (10), described laser cell comprise a pair of laser tool (10a and 10b) that is spaced from each other predetermined space, be inserted between the described laser tool (10a and 10b) so that connect the tabular connector (11) of described laser tool (10a and 10b), at least one gas line (18) of each the supply assist gas in the described laser tool (10a and 10b) is given in the appropriate position of each in described laser tool (10a and 10b), be provided with the joints of optical fibre (12a) so that the optical fiber (12) of transmission laser beam, and have along downward direction and be arranged sequentially in aligning lens (15) in the described laser tool (10a and 10b), the optical system of condenser lens (16) and prism (17); Controller (30), described controller comprises plate support (31), movable part (33) and Linear actuator (35), wherein, one end of described plate support is connected to the center of the tabular connector (11) of described laser cell (10), one end of described movable part is connected to the other end of described plate support (31), one end of described Linear actuator is connected to the other end of described movable part (33), described movable part (33) moves along direction up and down is linear, and described Linear actuator (35) along continuous straight runs is linear mobile; The laser tool anchor clamps; And the grid spacer anchor clamps, described method comprises:
Described grid spacer (3) is fixed to the step (S11) of described grid spacer anchor clamps (50);
Control described controller (30) and drive the step (S12) of described laser cell (10) to the precalculated position of the top of the band connecting portion (5a and 5b) between the interior screen work band (4a and 4b) of grid spacer (3) along x, y and z direction;
Controlling described controller (30) moves described movable part (33) and described laser tool (10a and 10b) is inserted band connecting portion (5a and 5b) step (S13) on every side between the interior screen work band (4a and 4b) of grid spacer (3) along vertical direction;
Band connecting portion (5a and 5b) between the interior screen work band (4a and 4b) that described laser tool (10a and 10b) is inserted grid spacer (3) is on every side the time, bullport (71) towards described laser tool anchor clamps (70) guides described laser tool (10a and 10b) in vertical direction, and described laser tool (10a and 10b) is inserted described bullport (71);
By the step (S14) of described optical fiber (12) transmission laser beam, wherein, described optical fiber is introduced into by the optical fiber connecting portion device (12a) on described laser tool (10a and the 10b) upper end;
To transmit the step (S15) that puts on the described aligning lens (15) on the last inboard that is arranged on described laser tool (10a and 10b) by the laser beam of described optical fiber (12);
The step of focussed laser beam (S16), wherein, this laser beam is aimed at and is transferred on the described condenser lens (16) by described aligning lens (15), and described condenser lens is arranged under the described aligning lens (15);
Reflect by the step (S17) of the laser beam of described condenser lens (16) focusing by the prism (17) that is arranged under the described condenser lens (16); And
Step (S18) by the band connecting portion (5a and 5b) between the interior screen work band (4a and 4b) that is welded grid spacer (3) by described prism (17) laser light reflected bundle.
9. method as claimed in claim 8 further comprises step (S17-1): discharge assist gas from described gas line (18), in case the band connecting portion (5a and 5b) between the interior screen work band (4a and 4b) of fastening position screen work (3) is oxidized.
10. method as claimed in claim 8, further comprise step (S18-1):, weld the band connecting portion (5a and 5b) between the interior screen work band (4a and 4b) of grid spacer (3) continuously or intermittently by the laser tool (10a and 10b) on every side of the band connecting portion (5a and 5b) between the interior screen work band (4a and 4b) that is inserted into grid spacer (3).
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2006-0045190 | 2006-05-19 | ||
| KR1020060045190 | 2006-05-19 | ||
| KR20060045190 | 2006-05-19 | ||
| KR10-2006-0081049 | 2006-08-25 | ||
| KR1020060081049 | 2006-08-25 | ||
| KR1020060081049A KR100770944B1 (en) | 2006-05-19 | 2006-08-25 | Apparatus and method of inner-strap welding of spacer grids using laser tool and spacer manufactured by the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101073856A CN101073856A (en) | 2007-11-21 |
| CN101073856B true CN101073856B (en) | 2010-05-26 |
Family
ID=38816108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100881343A Expired - Fee Related CN101073856B (en) | 2006-05-19 | 2007-03-15 | Apparatus and method for welding strap connections and spacer grid manufactured using the same |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4647627B2 (en) |
| KR (1) | KR100770944B1 (en) |
| CN (1) | CN101073856B (en) |
| AT (1) | ATE477576T1 (en) |
| DE (1) | DE602007008317D1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1393010B1 (en) * | 2009-03-31 | 2012-04-11 | Laservall Spa | LASER WELDING SYSTEM |
| KR101081558B1 (en) | 2009-11-17 | 2011-11-08 | 한전원자력연료 주식회사 | Apparatus for removing tab of weldign spacer grid of nuclear fuel rod |
| JP2014079768A (en) * | 2012-10-15 | 2014-05-08 | Toshiba Corp | Welding method and welding device |
| CN110076456A (en) * | 2019-05-29 | 2019-08-02 | 浙江晶科能源有限公司 | A kind of photovoltaic welder, photovoltaic module manufacturing equipment and solar battery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0305944A1 (en) * | 1987-08-31 | 1989-03-08 | Westinghouse Electric Corporation | Workpiece Handling assembly |
| US5179261A (en) * | 1991-09-17 | 1993-01-12 | Combustion Engineering Inc. | Split beam laser welding system |
| US5221515A (en) * | 1990-05-07 | 1993-06-22 | Franco-Belge De Fabrication De Combustible | Method for manufacturing grids for a nuclear fuel assembly |
| CN1147989A (en) * | 1995-06-29 | 1997-04-23 | 弗朗哥-贝尔格燃料制造公司 | Method and device for welding interlaced straps of spacer grid of fuel assembly via exterior of the grid |
| CN1151339A (en) * | 1995-06-29 | 1997-06-11 | 弗良哥-贝尔格燃料制造公司 | Method and in stallation for welding spacer grid of fuel assembly for nuclear reactor and device for welding via interior of grid |
| CN2712532Y (en) * | 2004-06-15 | 2005-07-27 | 武汉楚天激光（集团）股份有限公司 | Multiaxial support for optical fiber laser head |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2535638B1 (en) * | 1982-11-09 | 1985-09-06 | Fragema Framatome & Cogema | METHOD AND INSTALLATION FOR WELDING GRIDS FOR NUCLEAR FUEL ASSEMBLY |
| FR2647944B1 (en) | 1989-06-02 | 1993-12-10 | Framatome | FUEL ASSEMBLY OF A NUCLEAR REACTOR COMPRISING A DEVICE FOR RETAINING PARTICLES CONTAINED IN THE REACTOR COOLING FLUID |
| JPH079171A (en) * | 1993-06-25 | 1995-01-13 | Toshiba Corp | Laser device for treating inside surface of tube |
| JPH0866782A (en) * | 1994-08-29 | 1996-03-12 | Mitsubishi Nuclear Fuel Co Ltd | Joining method of lattice member and joining device |
| JP2001191189A (en) * | 1999-12-28 | 2001-07-17 | Sony Corp | Laser beam welding equipment |
| KR100390013B1 (en) | 2000-10-05 | 2003-07-04 | 한국원자력연구소 | Apparatus of laser welding for attachment of bearing pads of nuclear fuel elements |
| KR100489306B1 (en) | 2004-07-15 | 2005-05-17 | 주식회사 아이엠티 | Laser articulated arm system |
-
2006
- 2006-08-25 KR KR1020060081049A patent/KR100770944B1/en active IP Right Grant
-
2007
- 2007-01-18 JP JP2007009031A patent/JP4647627B2/en not_active Expired - Fee Related
- 2007-03-12 AT AT07290306T patent/ATE477576T1/en not_active IP Right Cessation
- 2007-03-12 DE DE602007008317T patent/DE602007008317D1/en active Active
- 2007-03-15 CN CN2007100881343A patent/CN101073856B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0305944A1 (en) * | 1987-08-31 | 1989-03-08 | Westinghouse Electric Corporation | Workpiece Handling assembly |
| US5221515A (en) * | 1990-05-07 | 1993-06-22 | Franco-Belge De Fabrication De Combustible | Method for manufacturing grids for a nuclear fuel assembly |
| US5179261A (en) * | 1991-09-17 | 1993-01-12 | Combustion Engineering Inc. | Split beam laser welding system |
| CN1147989A (en) * | 1995-06-29 | 1997-04-23 | 弗朗哥-贝尔格燃料制造公司 | Method and device for welding interlaced straps of spacer grid of fuel assembly via exterior of the grid |
| CN1151339A (en) * | 1995-06-29 | 1997-06-11 | 弗良哥-贝尔格燃料制造公司 | Method and in stallation for welding spacer grid of fuel assembly for nuclear reactor and device for welding via interior of grid |
| CN2712532Y (en) * | 2004-06-15 | 2005-07-27 | 武汉楚天激光（集团）股份有限公司 | Multiaxial support for optical fiber laser head |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100770944B1 (en) | 2007-10-26 |
| DE602007008317D1 (en) | 2010-09-23 |
| ATE477576T1 (en) | 2010-08-15 |
| CN101073856A (en) | 2007-11-21 |
| JP2007307613A (en) | 2007-11-29 |
| JP4647627B2 (en) | 2011-03-09 |
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