CN1062862A

CN1062862A - The device that is used for welding structural components of nuclear fuel assembly

Info

Publication number: CN1062862A
Application number: CN91111838A
Authority: CN
Inventors: 蒂波特·伯纳德; 皮卡德·保罗; 福格特·琼
Original assignee: Franco Belge de Fabrication de Combustible FBFC
Current assignee: Franco Belge de Fabrication de Combustible FBFC
Priority date: 1990-12-24
Filing date: 1991-12-24
Publication date: 1992-07-22
Anticipated expiration: 2006-12-24
Also published as: CN1036255C; CS394291A3; FR2670947B1; ZA9110117B; FR2670947A1

Abstract

Be applicable to the device of making its skeleton for the fuel assembly of light-water reactor, it includes two supports that are used for bearing skeleton that be arranged in parallel side by side, and comprise that one has the welding gear of balladeur train, balladeur train can be parallel to catheter displacement, and is loaded with the automat that can make weld jig possess abundant degree of freedom and be acted on the member on arbitrary support.Automat can make anchor clamps be parallel to row's catheter displacement, and can displacement between two angle positions, and therein in position, anchor clamps can be by between adjacent two row's conduits, and in the another location, anchor clamps can schedule on the conduit at the position folder of intending welding.

Description

The device that is used for welding structural components of nuclear fuel assembly

The present invention relates to the welding of the member of anabolic reaction core fuel assembly skeleton.

In particular, the present invention relates to such device, it is used to the conduit of this fuel assembly is welded on screen work one class A of geometric unitA of conduit distribution, this kind device comprises: a support, be used for installing by the conduit of horizontal positioned and the parts group of forming by member, and be used for these group parts are remained in position to be welded; A kind of welding gear, it comprises that one can be parallel to the balladeur train that above-mentioned conduit work moves horizontally, comprise that simultaneously at least one is connected to weld jig on this balladeur train by certain device, this kind device then can make these anchor clamps be parallel to row's catheter displacement, simultaneously these anchor clamps are between following two angle positions and rotate, a position, these anchor clamps can be by between adjacent two conduits of arranging, in another position, these anchor clamps can press from both sides due to a supravasal position to be welded; And can be applied to device on these type of anchor clamps to welding impulse.

The above-mentioned this device that is used for gripping screen work that includes is described in French Patent (FRP) FR-A-2533353.Said support is through being designed to be used for installing member and this group conduit of a single component.In case conduit set emplace, this kind anchor clamps or the anchor clamps that each is so just are transverse to the orientation displacement of conduit, remaining in one simultaneously can be by the angle position between adjacent two row's conduits, afterwards, these anchor clamps promptly close with a vessel clamp around its sense of displacement rotation and in its closure with before being used for welding.

Said apparatus can make a skeleton form, and has avoided stress and weakness at the same time.If aforementioned support is designed to make and respectively organizes parts and can continue in placely mutually, occupy position that a precision is determined and can appropriate reproduction, just can carry out weld job usually by making anchor clamps enter identical preprogrammed position.

But above-mentioned this class known devices but exists such shortcoming, and it needs to interrupt weld job with the member emplace of a new skeleton time, the then simple loss of the welding gear of this moment itself and not work done.Unfortunately, if the installation of this member and conduit, when fixing and conversion process is directly carried out, can consume a large amount of time on support.If the member of a skeleton is assembled on the contiguous jig of aforementioned means, when conduit that this group prepackage is prepared and member are transported on the support then, the then required work of being engaged in that transports and the insufficient rigidity of jig will reduce the precision of weld job.

The present invention's purpose is to provide a kind of like this device that is used to weld, it can welding gear effectively work during in reduce its break period significantly, and can not have influence on the precision of weld job or the quality of final gained skeleton.

For this purpose, the invention provides the such device that is defined as above, be characterised in that: it comprises two parallel supports that are set up in parallel, simultaneously, those devices of addressing previously belong to a kind of like this automat, it has fully many degree of freedom, and anchor clamps are acted on the member that alternately is placed on arbitrary support.

Because above-mentioned layout, the installation of frame member, fixingly just can carry out in the time, and the welding gear of the required major part of formation the present invention's device almost can be to use continuously " sheltering " with the calibration operation.

In most preferred embodiment of the present invention, aforesaid device comprises: can move horizontally the also supported box of this moving direction of crosscut with respect to balladeur train; Can make vertical mobile arm with respect to this supported box; And the toggle that can rotate around the horizontal axis that is parallel to the carriage advance direction, this toggle can make its contained anchor clamps that hold parallel with conduit in a row, by means of the collaborative work between this upright arm and the support displacement, when this toggle is in the suitable angle position, just can make anchor clamps pass through to make these anchor clamps transfer to another simultaneously and arrange up between two adjacent row's conduits from row's conduit.

The present invention also aims to the device that provides such, it can obtain the obtainable welding precision of aforementioned prior art device, but can be engaged in welding quickly.

The invention allows for a kind of favourable structure, this is not necessary substantially certainly, in this kind structure, described toggle comprises a probe, can be used to from laterally making the framework location of clamping component, this probe is outstanding from toggle, departs from predetermined angular that generally is about 180 ° of anchor clamps.

This located lateral can strictly be determined the position of framework with probe, thereby has just determined accurately that also the position of member, result just can make weld jig correctly in place when each welding.

If but the arm of perpendicular displacement can be rotated around a vertical shaft, then this probe can also be used for making framework (thereby making member) accurately to locate in duct direction, just can calculate in view of the above to making the accurately required corrected value in location of weld jig.

By reading the description of the present invention's one specific embodiment being done with unrestricted way of example, can understand the present invention better.In the description referring to the following drawings, wherein:

Fig. 1 is a synoptic diagram, shown in do not comprise its support that is used for accommodating skeleton in the device of the present invention;

Fig. 2 shows bright this device of looking from arrow F direction according to Fig. 1, has comprised two supports simultaneously, and one of them is occupied for the frame member that is welded to together;

Fig. 3 be from arrow F direction see in the past through enlarged detailed, show the structure of bright automat toggle; And

Fig. 4 shows the bright configuration that is welded to the conduit in the specific skeleton, and this kind skeleton can be thought representational, comprising the changeover panel that can determine special welding sequence is arranged.

The device of describing with an object lesson of the present invention below, be to be used for the conduit of a fuel assembly is welded on a collection of screen work, at this set this batch screen work, their tongue piece is got conventional arrangement form, for example described in the French Patent (FRP) instructions FR-A-2049108.

Device shown in Fig. 1 and 2 can be regarded as comprising there being the assembly worktable and can be along the automatic welding machine of this working table movement.

This assembly worktable can be made of for the metal framework spare that protective shield hid both sides, this frame unit is made up of the parts that extend longitudinally of some settings, these a few parts form the stand that is loaded with two horizontal beams 10 above, and airborne holding with balladeur train 12 promptly moved on this stand automatically.This tool stand defines two multiple operation districts (Fig. 2) of configuration side by side, and the length of each workspace is suitable with the length of skeleton to be welded at least.Be provided with a support 14 in each workspace, can be in wherein assembling a skeleton in advance.Each support can comprise a weldering table 16 and one plate 18.

Worktable shown in Figure 2 also includes

track

22,10 configurations of crosscut beam can make boxes and baskets 24 run between a position shown in Figure 2 (it covers on the support 14 when this position) and another position (it covers on another support 14 when this position).These boxes and baskets are provided with long rails, and balladeur train 25 can travel on this track and make a collection of extendible axle location, make the latter can be in conduit is inserted in the welding position, in order to avoid deformation of guide tube.The structure of these axles can be guided by the framework (not showing bright) that is fixed on the boxes and baskets with identical described in the patent specification FR-A2533353.

The screen work of skeleton to be welded prolongs and is used for bearing framework 20, so that can accurately schedule adjustable position to the plate 18 of support 14 whole length.These devices can make it to open to accommodate screen work and can make it the closed once more desirable known structure of framework simultaneously.In an illustrated embodiment, these frameworks are each screen works that are used for bearing a skeleton, and in this skeleton, fuel element is pressed square array and distributed, and their diagonal line is along level and vertical direction extension.The result makes conduit in a row, for example conduit shown in Fig. 3 28 angle u and the v at 45 with respect to level.

Each framework is that two adjacent horizontal side are owing to the following purpose of being chatted has

reference area

30 and 32 at least.

Automatically airborne hold with balladeur train 12 occupied the overall with of assembly tool platform and carry above the travelling cross track 34 of a supported box 36, contain simultaneously and be used for controlling this supported box along guide rail 34 and be used for the device that upright arm 38 moves with respect to this case.The device of She Zhiing can make arm 38 according to three orthogonal directionss motions, these three directions that direction is an x(beam 10 like this), the direction of y(track 34) and the z(vertical direction).This supported box has also contained the welding transformer.

In present confession for example with described embodiment in, arm 38 is equipped with and can makes it the bright device that rotates around the z direction shown in the A as Fig. 1 and 3.The bottom of arm 38 is loaded with shown in the arrow B, can be around the toggle 40 that is bound by the transverse axis rotation on this arm.This toggle 40 itself is loaded with a chuck 42 that is used for installing weld jig 46 again.This chuck then can rotate around the axis of the pivot center that is orthogonal to toggle, as shown by arrow C.This chest 44 is equipped with pneumatic and feed arrangement electric power of the routine that is made of cable.Can see thus, this kind anchor clamps have six-freedom degree, thereby can act on any required workspace, simultaneously can make anchor clamps have six-freedom degree, thereby can act on any required workspace, it is any by required direction between adjacent two row's conduits that anchor clamps are pointed to, and folder fix on a conduit need the position of pending welding on.

In most preferred embodiment shown in Figure 3, toggle 40 is equipped with a positioning probe 50 along the extension of weld jig 46 reverse directions.Be configured to direction u(as shown in phantom in Figure 3 by holding arms) or direction v in, when balladeur train 12 is in the appropriate location, make supported box 36 motion, just making pops one's head in touches reference area 30 or 32.On the face that in the y-z plane, extends of framework, one or more reference area 52 can also be provided, vertical reference area can also be similarly provided at this.Above-mentioned probe can comprise a switch, be used to provide signal go to point out each framework in laterally the position and point out its angle position.Just can provide a reference position in view of the above for this batch automat.By proofreading and correct the preprogramming address, can also calculate the exact position of pending weld simultaneously.In other words, this automat can be registered to each screen work to be welded automatically, can obtain to be about the precision in the 0.1mm thus, but employed components and parts then is general merchandise.

It should be noted that in addition, be equipped with control computer and automat, just can on same worktable, weld dissimilar skeletons corresponding to the storer of different skeleton serializations by employing.

So when a skeleton is placed on the support 14 already, when axle also had been inserted within the conduit simultaneously, the present invention's device just can be operated according to the following steps.

Place the x direction to make it to rise to screen work position to be welded balladeur train 12.The starting automat makes probe 50 contact with reference area 30, a definite N Reference Alignment value in the v direction.Mobile then automat makes probe contact with reference area 32, and corrected value so just is provided in u direction.Make arm 38 turn over 90 ° around the z axle, the motion balladeur train is determined the position of framework 20 along the x axle simultaneously, and probe is contacted with reference area 52.Above measurement result is just for providing correction data (corresponding reference number is seen Fig. 4) according to the welding sequence of for example following manner operation:

In first welding sequence, by axle 42 anchor clamps are inserted in the first direction, for example as shown in Figure 4, along u direction to insert in the conduit array; Then

Starting is used for the mechanism of displacement supported box 36 and arm 38, makes anchor clamps rise to the first conduit place to be welded, and is promptly concordant with the conduit that is arranged in Fig. 4 D1 place, angle direction then with the quadrature shown in Fig. 4;

Make anchor clamps turn left 120 °, make two electrode branches of anchor clamps be in the relative both sides of the tongue piece that extends to screen work plate place, simultaneously they are pressed to conduit to be welded at this;

Be able to contact so two electrodes of anchor clamps 46 are closed with tongue piece;

Start a pulse producer (not showing bright), current impulse is provided, be used for coming in D1 place welding conduit along two bar generator circuit;

Make anchor clamps 46 recede 120 ° to its insertion position; Then

Mobile anchor clamps 46 make it to advance a stroke towards the further conduit that is positioned at the E1 place, repeat described weld job.

According to above-mentioned steps, handle the conduit at D1, E1 and F2 place in succession.

Finish said procedure and just handled half such conduit, for example can be according to arrow indication distance among Fig. 4, can join the corresponding description in French Patent (FRP) instructions FR-A2533353 number to this.

After anchor clamps are moved to diverse location with respect to skeleton, just can carry out other three welding sequences.For instance, Fig. 2 and 3 has promptly shown the position of determining to anchor clamps for this purpose.

Claims

1, being used for conduit with nuclear fuel assembly is welded to device on screen work one class A of geometric unitA that distributes along conduit, this kind device comprises: a support (14), be used for installing the parts group of forming by conduit and member, and be used for these group parts are remained in position to be welded by horizontal mode; A kind of welding gear, it comprises that one can be parallel to the balladeur train (12) that conduit moves, comprise that simultaneously at least one is connected to weld jig (44) on this balladeur train by certain device, this kind device then can make these anchor clamps be parallel to row's catheter displacement, simultaneously these anchor clamps are between following two angle positions and rotate, a position, these anchor clamps can be by between adjacent two conduits of arranging, in another position, these anchor clamps can press from both sides due to a supravasal position to be welded; And can be applied to device on these type of anchor clamps to welding impulse; This device is characterised in that: it includes two parallel supports that are set up in parallel (14), and simultaneously, aforementioned device then belongs to a kind of like this automat, and it has fully many degree of freedom, and anchor clamps are acted on the member that is rotated in arbitrary desktop machine base.

2, device as claimed in claim 1, be characterised in that: aforementioned device comprises: a supported box (36), it can move horizontally with respect to balladeur train, and can move laterally with respect to this balladeur train moving direction; A kind of arm, it can be for vertical movement with respect to supported box (36); And a toggle (40), it can rotate around a horizontal axis that is parallel to the sense of displacement of balladeur train, so that its contained anchor clamps that hold point to and parallel direction of conduit in a row.

3, device as claimed in claim 2 is characterised in that: above-mentioned toggle comprises that one is used for making the probe (50) of the supported box of member along located lateral, and this probe has a predetermined angle deviating value with respect to anchor clamps.

4, device as claimed in claim 3 is characterised in that: above-mentioned probe (50) is arranged on the opposite side of the pivot center of toggle (40) with respect to anchor clamps (46).

5, as claim 3 or 4 described devices, be characterised in that: aforementioned arm 38 can rotate around a vertical axis, and probe (50) can be positioned the supported box of member in the direction of conduit.

6, as each described device in the claim 2 to 5, be characterised in that: above-mentioned toggle (40) carries by an axle and is holding anchor clamps (46), be used for making these anchor clamps to rotate between two angle positions, in a such position, these anchor clamps can be by between adjacent two row's conduits; In another angle position, these anchor clamps then press from both sides on a conduit.