CN1261715A - Loading device and method for hoisting nuclear reactor core - Google Patents
Loading device and method for hoisting nuclear reactor core Download PDFInfo
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- CN1261715A CN1261715A CN00100997A CN00100997A CN1261715A CN 1261715 A CN1261715 A CN 1261715A CN 00100997 A CN00100997 A CN 00100997A CN 00100997 A CN00100997 A CN 00100997A CN 1261715 A CN1261715 A CN 1261715A
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- fuel assembly
- nuclear fuel
- roofbolt
- nuclear reactor
- nuclear
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/19—Reactor parts specifically adapted to facilitate handling, e.g. to facilitate charging or discharging of fuel elements
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
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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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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The unit for loading the core of a nuclear reactor having fuel elements supported on a horizontal core support plate, comprises a guide unit (18,19,20) composed of a post or beam. The guide unit is arranged vertically and its upper end is attached to a movable unit section which can move between a withdrawn position and an operating position. The guide unit lower end can extend down to the operating position and has a guide pin which can locate into a water penetration opening in the support plate.
Description
The present invention relates to a kind of loading attachment and method thereof that is used to lift water cooled nuclear reactor core, particularly pressurized water cold nuclear reaction reactor core.
Nuclear reactor such as by the water-cooled nuclear reactor of supercharging, comprises the container that contains nuclear reactor core, and this nuclear reactor core is made up of the nuclear fuel assembly, during use, and the reactor cooling fluid nuclear reactor core of flowing through.
Described nuclear reactor core fuel assembly generally has vertical prismatic shape, by its underpart or following nozzle, leans against on the nuclear reactor core support plate in the described container, and stands vertically.This nuclear reactor core support plate has pin to be used for locating to the nuclear fuel assembly.The following nozzle of each nuclear fuel assembly comprises two open pores, be used for on the position of nuclear reactor core fixedly two of the nuclear fuel assembly register pins engage.Nuclear fuel assembly arranged side by side is staggered thick and fast, and wherein each nuclear fuel assembly closely contacts with adjacent assembly with grid configuration through its nozzle and interval grid thereof.
The fission nuclear fuel that is contained in the described assembly is consumed in the nuclear reactor of operation gradually, and this meaning nuclear fuel assembly apparatus exhausts fission nuclear fuel gradually, and loses efficacy to a certain extent.Need periodically carry out repeatedly the operation of hoisting nuclear reactor core.This action need is closed and is cooled off nuclear reactor, this operation is as follows: substitute some nuclear fuel assemblies in a certain zone be positioned at nuclear reactor core with new nuclear fuel assembly, the nuclear fuel assembly of the nuclear reactor core that other is not substituted by new nuclear fuel assembly then moves to another zone from a zone of nuclear reactor core.
And then, when nuclear reactor is brought into use, need lifting to have the nuclear reactor core of new nuclear fuel assembly, they are formed in first batch of load in the nuclear reactor.
The operating process of nuclear reactor lifting or lifting repeatedly is that container cover is thrown off the back and carried out in water, is that the upper horizontal plane from stillpot carries out to the bottom that receptacle hole opens wide.
In order to realize lifting or the operation of lifting repeatedly, adopt the machine that promotes and carry the nuclear fuel assembly, shovel loader as is well known, comprise the horizontal guide that is placed on described stillpot upper horizontal plane, with can move the frame of installation along horizontal guide, at least on the surface level both direction, move, catching and to promote the device of nuclear fuel assembly, each nuclear fuel assembly can be placed on the nuclear reactor in-core in the mode of vertical line.
The device of catching and promoting the nuclear fuel assembly comprises mast, in its underpart, has the device of catching a nuclear fuel assembly, is vertically hanging through its top nozzle like this.The installation of this mast should make in the tubulose urceolus on the vertical axis direction and can vertical direction move, and this tubulose urceolus is fixed on the frame of shovel loader.
In the nuclear reactor of operation, the nuclear fuel assembly can be subjected to radiation and discharge huge heat, may experience distortion.Because the total forming shape of nuclear fuel is generally very long and very thin, the size in its cross section is much smaller than its axial length, that is, for example, because crooked, compare with the theoretical position along the axis centering of nuclear fuel, and demonstrating down nozzle has sizable movement and deformation.
As a result, adopt two register pins on its pilot hole and the nuclear reactor core support plate to engage mode, be difficult in the nuclear reactor core with the nuclear fuel assembly of distortion and engage once again.
By the nuclear fuel assembly is placed on the adjacent position, again the nuclear fuel assembly is placed in the clapboard assembly that keeps the peripheral assembly of nuclear reactor core, lift or hoisting nuclear reactor core again, when placing the nuclear fuel assembly of square-section in the square grid, described nuclear fuel assembly is seated in the interior suitably place, prismatic zone of square-section, and one side of the flank of this nuclear fuel assembly, both sides or three limits are surrounded by adjacent nuclear fuel assembly.When the nuclear fuel assembly of distortion is placed in the prismatic zone of nuclear reactor core suitably local, and when it is surrounded by adjacent nuclear fuel assembly on every side, must SC avoid nozzle and be placed on the nuclear fuel in suitable place that always grid and adjacent nuclear fuel assembly go wrong and interrupt at interval.In order to be completely fixed the nuclear fuel assembly of distortion, must carry out repeatedly the lifting of nuclear fuel assembly and the control operation of reduction.Described nuclear fuel assembly storing is on the throne, and hoisting nuclear reactor core needs could realize for a long time again.The reactor shutdown period of this nuclear reactor that correspondingly extended.
Therefore proposed in nuclear reactor core, to quicken the fixedly guiding device of nuclear fuel assembly.
For example, proposed to be fixedly connected on the guiding flange of rigidity rod end, this rigid rod is fixed on the shovel loader mast in the use.Put down the type of position according to the nuclear fuel assembly, be that is to say the nuclear fuel assembly quantity adjacent, can be adopted one to four flange, kept nuclear fuel assembly bottom according to peripheral position.The device that has flange like this can improve the condition that the nuclear fuel assembly engages and introduces, but during the downward last location of the nuclear fuel assembly in the time of can not the pilot hole of nozzle engages with each register pin on the nuclear reactor core support plate under the nuclear fuel assembly, provide effective guiding function.
Also proposed the device be made up of the assembly or the nuclear fuel assembly nozzle of simulation of simulation, the nuclear fuel assembly nozzle of the assembly of this simulation or simulation is fixed on the nuclear reactor core support plate, is the position that the nuclear fuel assembly is just being put down around it.Such device comprises the leader of inclination, and the nuclear fuel assembly is placed on the position of suitable satisfaction, and the nozzle opening hole can engage with register pin.These devices aspect installation deformed nucleus fuel assembly, provide substantial improvements especially.Yet the shortcoming of these devices is that before or after the nuclear fuel assembly was installed fully, they had to be installed in bottom and bottom withdrawal from described pond in the described pond.
Known this device is complicated simultaneously, and its side is fixed on the lifting nuclear fuel assembly apparatus, and comprises guiding and mobile nuclear fuel assembly bottom and move the device on its top simultaneously.Such device is complicated and heavy, is difficult to need to install the operation of lifting repeatedly of a large amount of nuclear fuel assemblies.
The device that the purpose of this invention is to provide a kind of hoisting nuclear reactor core, its nuclear reactor core is made up of the nuclear fuel assembly, this nuclear fuel assembly places on horizontal nuclear reactor core support plate in the container top with the bottom, the device of described hoisting nuclear reactor core comprises the pin that is used for to nuclear fuel assembly location, each pin protrudes above the nuclear reactor core support plate, the through hole of flowing through for nuclear reactor cooling water is arranged on the nuclear reactor core support plate, loading attachment comprises a vertical mast, it is equipped with the movable fixture that nuclear fuel assembly top is fixed on its mast bottom, move the device of above-mentioned mast in the horizontal and vertical directions, so that will be fixed on a nuclear fuel assembly on the mast from the upper horizontal plane in nuclear reactor pond, set aside on the nuclear reactor core support plate, thereby, two pilot holes of nuclear fuel assembly lower end are engaged with two register pins, mast has at least one guiding device, the device production of this hoisting nuclear reactor core and use are simple, and be shelved on fully on the nuclear reactor core support plate up to the nuclear fuel assembly, till when following nozzle engages with the register pin of nuclear reactor core support plate, all can be the nuclear fuel assembly effective guiding function is provided.
For this reason, described guiding device is made up of the roofbolt of at least one suspension, thereby it by its upper end vertical hanging, its upper end is to be hinged on the device of mobile roofbolt, the mobile roofbolt of the device of mobile roofbolt between retracted position and active position, on active position, the part of roofbolt is contact with it on the close position of nuclear fuel assembly bottom, this roofbolt also comprises a lower end in addition, when roofbolt is in active position, it extends with respect to nuclear fuel assembly bottom and vertically downward, and it is made up of at least one directing pin, this directing pin can water flow hole with little gap insertion nuclear reactor support plate in.
In order to understand the present invention,, describe loading attachment of the present invention and be used to lift the usage of pressurized water cold nuclear reaction reactor core below by infinite example.
Figure 1A is the top front elevation of described loading attachment.
Figure 1B is the lower side front elevation of described loading attachment, and its guiding device is in retracted position.
Fig. 2 is the bottom synoptic diagram of described loading attachment, and its guiding roofbolt is in retracted position.
Fig. 3 is the synoptic diagram that is similar to Fig. 2, shows the bottom of described loading attachment and two roofbolts of guiding nucleus fuel assembly, and a roofbolt is in retracted position, and another root roofbolt is on the active position.
Fig. 4 is when the nuclear fuel assembly is placed on the nuclear reactor core support plate, the front elevation of guiding device bottom and nuclear fuel assembly.
Fig. 5 is the plan view of traditional pressurized water cold nuclear reaction reactor core, and this nuclear reactor core is using apparatus of the present invention to lift.
Figure 1A and 1B show shovel loader, and it is whole represented with label 1, relies on vertical concrete wall 3 coboundarys in the nuclear reactor pond 2, and the receptacle hole that contains the container of nuclear reactor is open to the bottom in this pond.Shovel loader 1 is used for loading and unloading the nuclear fuel assembly, and this nuclear fuel assembly is to constitute the nuclear reactor core of inserting in the container.
Need to use shovel loader 1 lifting or repeatedly the process of hoisting nuclear reactor in water, carry out, in the described pond water is filled with to surface level 4.
Shovel loader 1 comprises movable machine frame, and its integral body represents that with label 12 its allows shovel loader to move on any place of the nuclear reactor in the container, to catch or to put down the nuclear fuel assembly.
First frame 5 that constitutes the support assembly 12 of loader frame has cylindrical shovel loader tubulose urceolus 10, and the axis 11 of its urceolus 10 vertically points to.Tube 10 relies on the frame 5 through guiding device, and on first frame 5, this guiding device makes tube 10 rotate and directed around axis 11.
The assembly that the movable machine frame 12 of shovel loader can be made of urceolus 10 and interior mast 13 intersecting in the surface level that moves, can move on both direction.Thereby live mast 13 can be placed on any position of nuclear reactor in-core vertically oppositely, so that catch and put down any nuclear fuel assembly 17.
Urceolus 10 is included in the urceolus 10, on the direction of axis 11, the device of mast 13 in the described activity of guiding.
When shovel loader in use, mast 13 is by means of capstan winch 15, place with corresponding to axis 11 directions of vertical direction on, place the coupling arrangement 16 of fully lift position shown in Figure 1 and live mast 13 to be between the down position in nuclear reactor core assembly top nozzle zone.On this down position, can catch or put down a nuclear reactor core assembly 17.When live mast 13 is in raised position shown in Figure 1A and the 1B; nuclear fuel assembly 17 process coupling arrangements 16 are fixed on the lower end of live mast, for example, and when frame 12 just is being positioned over horizontal direction; nuclear fuel assembly 17 is installed in fully in urceolus 10, to protect this nuclear fuel assembly.
As can be seen, loading attachment also comprises at least one device 18 from Figure 1B, when nuclear fuel assembly 17 is put down on the nuclear reactor core support plate in nuclear reactor vessel, installs the 18 bottom 17a that guiding nuclear fuel assembly 17.
In addition, roofbolt 18 links to each other with second oil cylinder 21 through bar 19, is fixed on the top of urceolus 10 simultaneously, and second oil cylinder is handled the manipulation axis that axis is approximately perpendicular to oil cylinder 20.
Can find out from Fig. 2 and 3 that especially oil cylinder 20 makes roofbolt 18 between retracted position that rises and reduction active position, rises and reduction on the approximate vertical direction.
Transferring power oil cylinder 21 makes bar 19 handle roofbolt 18, roofbolt 18 is moved, thereby the upper end 18b of roofbolt 18 can be connected and lock through locking mechanism 22, or on the other hand, when this roofbolt is in active position, this roofbolt relies on the supporting member 23 and 23 ' of mast 13, and operating rod 19 is gone up release and is separated from from the upper end 18b of roofbolt 18.
The lower end 18a of roofbolt 18 preferably constitutes two alignment pins, be intended to the nuclear reactor core support plate on two water flow holes engage with little gap, like this, just can be mounted on the nuclear fuel assembly of the end that promotes mast 13.Support plate does not say generally have four water flow holes with respect to each nuclear fuel assembly, use be two adjacent water flow holes.
Being fixed on the roofbolt 18 is two supporting members 24 and 24 ', when roofbolt 18 is in the use location, be intended to respectively be fixedly connected on mast 13 on supporting 23 and 23 ' engage.
On the use location, roofbolt 18 relies on element 24 and 24 ' through it, leans against on the supporting member 23 and 23 ' of mast 13.
As shown in Figure 3, can use some guiding devices, each guiding device is made up of a roofbolt 18 and the device that moves and support this roofbolt, when a nuclear fuel assembly 17 uses loading attachment of the present invention, just putting when being placed on the nuclear reactor core plate this nuclear fuel assembly 17 of guide means guide down.At the nuclear fuel assembly is under the situation of prismatic and square-section, can use four guiding devices that respectively comprise a roofbolt 18.
From Figure 1B and 3 as can be seen, roofbolt 18 can have the straight-line segment of two almost parallels, turning part by an elbow links to each other, this elbow turns part with respect to the roofbolt axis tilt, the following nozzle place that this roofbolt bottom can be installed in be right after the nuclear fuel assembly, and when roofbolt 18 is in the use location, preferably can roughly contact with this time nozzle.Thereby, especially referring to Fig. 4, when roofbolt 18 is in the use location, for the following nozzle 17a of the nuclear fuel assembly on being fixed in mast 13, vertical and the extension downwards of the bottom 18a of roofbolt 18, be in the nozzle extension scope, and be not difficult described nuclear fuel assembly is installed on the nuclear reactor central layer, this will be described below.
When a nuclear fuel assembly is out of shape, for example be deformed into arcly, the roofbolt bottom contacts with the following nozzle of nuclear fuel assembly, can make the alignment in scope to a certain degree of nuclear fuel assembly in the installation of roofbolt.
It should be noted that the roofbolt 18 of guiding device, on its use location, be fixed on the element that the mast 13 with loading attachment is fixedly linked.Thereby no matter the geometric configuration that is fixed on the nuclear fuel assembly 17 on the mast 13 how, roofbolt preferably is parallel to the axis that lifts mast 13.
The roofbolt 18 of guiding device enter more than the upper horizontal plane of nuclear reactor pond urceolus 10 with interior shovel loader use location on.Thereby this is easy to control and auxiliary.
Before the guiding roofbolt enters the use location, for example, in the nuclear reactor fuel pond, catch nuclear fuel assembly 17 with mast 13.Nuclear fuel assembly 17 is fixed on shovel loader mast 13, and shovel loader mast 13 rises then, and like this, mast 13 and nuclear fuel assembly 17 are on the complete retracted position in the urceolus 10 of shovel loader.
The roofbolt 18 of the guiding device of shovel loader by starting oil cylinder 20 and 21, on nuclear reactor, enters the use location, on the dependence element 24 and the supporting member 23 and 23 ' of 24 ' positioning and fixing at mast 13 of each roofbolt 18 then. Induction element 25 and 26 moves roofbolt 18 between its extraction and the use location that preferably is directed.
After roofbolt 18 placed the use location, the bottom of roofbolt was fixed on the direction that is parallel to mast 13 axis, axially aimed in the water flow hole of these positions and nuclear reactor support plate.
Can adopt independent roofbolt 18, its underpart 18a has constituted two alignment pins, aims at two water flow holes of nuclear reactor core support plate, perhaps adopts two, three or four roofbolts, relatively places respectively on the nuclear fuel assembly respective surfaces.
Fig. 4 shows nuclear reactor core support plate 30, its upper surface has pin 27, be used for locating to the nuclear fuel assembly such as assembly 17, be intended to rest in nuclear reactor core support plate nozzle or bearing about in the of 30, comprise open pore 28, be used for engaging with the register pin that stretches out from nuclear reactor core support plate 30 upper surfaces.
This nuclear reactor core support plate 30 has water flow hole 29, and they pass the whole thickness of this support plate 30, makes chilled water introduce and be distributed between each nuclear fuel assembly 17.Place the square grid of nuclear reactor core support plate 30 at the nuclear fuel assembly of square-section, the nuclear fuel assembly is positioned in the grid by pin 27, nuclear reactor core support plate 30 has four water flow holes 29, and they pass nuclear reactor core support plate 30 on each nuclear fuel assembly anchor point.
Fig. 4 shows a nuclear fuel assembly 17 and is installed on the final position of nuclear reactor core support plate 30.Also show the bottom of roofbolt 18 of the guiding device of shovel loader simultaneously, and nuclear fuel assembly 17 is suspended on the shovel loader.Roofbolt 18 is on its use location, and the bottom of roofbolt 18 is parallel to the mobile axis 31 of the mast of shovel loader, and the shovel loader mast is put on the following nozzle 17a that leans against nuclear fuel assembly 17.
The lower end 18a that has constituted the roofbolt 18 of two alignment pins axially combines with water flow hole 29, and vertically the position that is put down the adjacent empty nuclear fuel assembly in position with nuclear fuel assembly 17 aligns.During nuclear fuel assembly 17 is put down the final position, directing pin 18a comprises a Frusto-conical engagement end portion, and this directing pin 18a is introduced in the water flow hole 29, guiding nucleus fuel assembly bottom, therefore, initial guide has constituted the pre-determined bit (or pre-centering) of nuclear fuel assembly.Finally locate by the incompatible realization of joining of register pin 27 and open pore 28.
Do not produce at the nuclear fuel assembly under the situation of distortion, nuclear fuel assembly displacement axis 31 best and the shovel loader mast coincides.Produce at the nuclear fuel assembly under the situation of distortion, for example be deformed into arcly, nuclear fuel assembly lower axis may be angled with the mobile axis of shovel loader mast, or be offset slightly with respect to this axis.
Roofbolt or all roofbolts 18 of the odd number by adopting shovel loader or the guiding device of plural number can be accomplished the nuclear fuel assembly is stretching reliably or transform on the satisfied position of joint.The nuclear fuel assembly of nuclear reactor core in addition, engages constantly, owing to such as nuclear fuel assembly 17 ', also can provide reliable guiding at the nuclear fuel assembly.
In any case, when nuclear fuel assembly 17 is moved, the bottom 18a of roofbolt 18 is fixedly linked with it, when in the water flow hole 29 of the bottom of roofbolt 18 18a at the nuclear reactor core support plate, pilot hole 28 by following nozzle 17a does not engage with corresponding register pin 27 not difficultly, comes the downward set of guiding nucleus fuel assembly.Directing pin 18a diameter is generally greater than register pin 27 diameters, and when the nuclear fuel assembly was reduced to its appointed positions, directing pin 18a was not difficult to realize with engaging of water flow hole 29, and this appointed positions is that the formed grid coordinate by nuclear reactor core is determined.
Fig. 5 illustrates the cross section of nuclear reactor core 31, and it is located on the nuclear reactor core support plate 30.
Indicate by cross wires by the shared position, square-section of nuclear fuel assembly.Simultaneously, show, in the zone of not containing the nuclear fuel assembly as yet, nuclear fuel assembly 17 to be installed adopts the present invention to be equipped with the shovel loader of the device of guiding nucleus fuel assembly, is placed on the vacant position of nuclear reactor core.The nuclear fuel assembly 17 that is being set has been represented with A and B, depends on that they are set location type (A or B).
For the vacant position 32 at type A being installed by a nuclear fuel assembly 17, on nuclear reactor core, the nuclear fuel assembly of having installed previously around type A both sides makes two roofbolts 18 of the guiding device of shovel loader of the present invention enter the use location towards nuclear fuel assembly 17 bottoms.The bottom of roofbolt 18 is close together with nuclear fuel assembly 17 along nuclear fuel assembly two is positive, and these nuclear fuel assembly two fronts are the two positive relatively of its assembly, and the nuclear fuel assembly that is intended to be bordered with vacant position 32 contacts.
The nuclear fuel assembly, is reduced on the position shown in Figure 5 to be reduced to the zone that does not have the nuclear fuel assembly and vacant position 32 is arranged at a high speed by shovel loader.The nuclear fuel assembly moves horizontally vertically and vacant position 32 centerings then.Nuclear fuel assembly vertical direction moves to position 32 and disposes the position then.When the nuclear fuel assembly just had been lowered by, four water flow holes of the vacant position that the directing pin that constitutes roofbolt 18 bottoms and position 32 are adjacent engaged.When being set on nuclear reactor core support plate 30, nuclear fuel assembly 17 in the process, guides this nuclear fuel assembly 17 then.
Under the situation of vacant position, such as under the situation of the position 33 of type B, type B three limits are besieged (under the situation of position 33, surrounded by a nuclear fuel assembly on one side, both sides are surrounded by the dividing plate of nuclear reactor core), an independent roofbolt 18 enters the use location towards the bottom of nuclear fuel assembly 17, and nuclear fuel assembly 17 is put down at 33 places, vacant position.
Generally, when being laid in the nuclear fuel assembly on the nuclear reactor core support plate, the roofbolt that can make one, two, three or four shovel loader guiding device enters the use location towards the bottom of nuclear fuel assembly.
In any case, when the nuclear fuel assembly was set, the bottom of nuclear fuel assembly preferably was directed.
Guiding device of the present invention comprises the device of the bottom of guiding nucleus fuel assembly, and guiding device of the present invention is specially adapted to install the nuclear fuel assembly of distortion.Yet this device also demonstrates the advantage of the nuclear fuel assembly that non-distortion is installed simultaneously, described nuclear fuel assembly can be installed exactly and fast and set easily.
The present invention is not limited to described embodiment.
For example, the guiding device of shovel loader can comprise the roofbolt that is different from above-mentioned shape.On the mast of shovel loader, move, installation is with fixedly the device of roofbolt also can be different.Under the situation of the nuclear fuel assembly of prismatic and square-section, shovel loader can be designed to one, two, three or four guiding devices.
Certainly, under the situation of the nuclear fuel assembly of some other shapes, with regard to its shape or quantity, guiding device can have difference.
The present invention is applied to lift any nuclear reactor with nuclear reactor core, and this nuclear reactor core is made up of the nuclear fuel assembly, and this nuclear fuel assembly bottom is set on the support plate of nuclear reactor core.
Claims (7)
1. the loading attachment of a hoisting nuclear reactor core, its nuclear reactor core comprises nuclear fuel assembly (17), this nuclear fuel assembly (17) through bottom (17a) rely on horizontal nuclear reactor core support plate (30) in the container above on, the device of described hoisting nuclear reactor core comprises the pin (27) that is used for to nuclear fuel assembly (17) location, they protrude above nuclear reactor core support plate (30), the hole (29) that has nuclear reactor cooling water to flow through on the nuclear reactor core support plate to pass, described loading attachment (1) comprises vertical mast (13), it is equipped with the movable fixture (16) that nuclear fuel assembly (17) top is fixed on its underpart, move the device (12 of described mast in the horizontal and vertical directions, 8,15), so that will be fixed on nuclear fuel assembly (17) on the mast (13) from the upper horizontal plane of nuclear reactor pond (2), set aside on the nuclear reactor core support plate (30), so that two pilot holes (28) of nuclear fuel assembly (17) lower end (17a) engage with two register pins (27), mast (13) has a guiding device (18 at least, 19,20,21), it is characterized in that: described guiding device (18,19,20,21) formed by the roofbolt (18) of at least one suspension, by its upper end (18b) vertical hanging like this, its upper end (18b) is the device (19 that is hinged on the mobile roofbolt (18) between retracted position and the active position, 20,21) on, on active position, the part of roofbolt (18) is contact with it on the close position of nuclear fuel assembly (17) bottom (17a), this roofbolt (18) also comprises a lower end (18a), when roofbolt (18) when being in active position, extend vertically downward with respect to nuclear fuel assembly (17) bottom, and it is made up of at least one directing pin (18a), and this directing pin can be inserted in the water flow hole (29) of nuclear reactor support plate (30) with little gap.
2. loading attachment as claimed in claim 1, it is characterized in that: on its active position, described roofbolt (18) relies on device (24 through at least one, 24 ') rely on fulcrum arrangement (23,23 ') on, this fulcrum arrangement (23,23 ') be fixedly connected on the described mast (13), the device of mobile roofbolt (18) between its retracted position and active position, be included in first oil cylinder (20) of mobile roofbolt (18) on the vertical axis direction, rely between the position that device (24) supporting (23) vertical and shovel loader mast (13) aligns at least one of retracted position and roofbolt (18) in a lateral direction, second oil cylinder (21) of mobile roofbolt, and between its retracted position and its active position, guide the device (25,26) of roofbolt (18).
3. loading attachment as claimed in claim 2, shovel loader comprises be fixedly connected on the device (12 that urceolus (10) is moved horizontally on the nuclear reactor pond, 8) urceolus on (10), wherein said mast is mounted to and can moves in vertical direction, it is characterized in that: the device (25 of guiding roofbolt (18), 26) comprise guide rolls (25) and guide rail (26), this guide rail (26) is fixedly connected on the urceolus (10) of shovel loader.
4. as the described loading attachment of one of claim 1-3, it is characterized in that: at least one directing pin (18a) that constitutes roofbolt (18) bottom of guiding device, comprise a frusto-conically shaped portion, this frusto-conically shaped portion engages with the water flow hole (29) of nuclear reactor support plate (30).
5. as the described loading attachment of one of claim 1-4, it is characterized in that: described roofbolt (18) has upper part and end portion, they are parallel to each other substantially, turning part by an elbow links to each other, this elbow turns part with respect to the roofbolt inclined, this roofbolt (18) bottom can be installed near the bottom (17a) of nuclear fuel assembly (17) and locate like this, and when roofbolt is in the use location, preferably can contact with the bottom of nuclear fuel assembly (17) on nuclear fuel assembly (17) use location.
6. the method for a hoisting nuclear reactor core, its nuclear reactor core comprises nuclear fuel assembly (17), this nuclear fuel assembly (17) relies on the front of horizontal nuclear reactor core support plate (30) in the container through bottom (17a), nuclear reactor vessel opens wide and links to each other with nuclear reactor pond (2), when nuclear reactor core when the upper horizontal plane of nuclear reactor pond (2) is just being sling, and sling, used shovel loader (1), it comprises vertical mast (13), it is equipped with the movable fixture that nuclear fuel assembly (17) top is fixed on its underpart, move the device (12 of described mast in the horizontal and vertical directions, 8,15), for the nuclear fuel assembly of each nuclear reactor core of just being sling, described method comprises successively: mast (13) bottom that nuclear fuel assembly top is fixed to shovel loader (1); Use shovel loader to move described nuclear fuel assembly, so that it is introduced in the nuclear reactor pond, with described nuclear fuel assembly (17) is placed on the nuclear reactor core support plate (30), the pilot hole (28) of nuclear fuel assembly (17) lower end (17a) engages with two register pins (27), this two register pin (27) protrudes from nuclear reactor core support plate (30), it is characterized in that: have one suitably to shelve the position, on a position of contiguous nuclear fuel assembly (17) lower end (17a), the roofbolt (18) of guiding nucleus fuel assembly comprises bottom (18a), it down extends on nuclear fuel assembly (17) lower end (17a), like this, move down mast (13) by vertical direction, described nuclear fuel assembly vertical moving, be placed on the room of nuclear reactor core up to it, insert at least one water flow hole (29) of nuclear reactor support plate (30) roofbolt (18) bottom (18a), and the nuclear fuel assembly is guided by the bottom (18a) of roofbolt (18).
7. method as claimed in claim 6, it is characterized in that: described guiding device comprises, when gin pole (13) and nuclear fuel assembly (17) were positioned at the upper horizontal plane in nuclear reactor pond (2), roofbolt (18) placed on the position of contiguous nuclear fuel assembly (17) bottom.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9900457A FR2788628B1 (en) | 1999-01-18 | 1999-01-18 | DEVICE AND METHOD FOR LOADING THE HEART OF A NUCLEAR REACTOR |
| FR9900457 | 1999-01-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1261715A true CN1261715A (en) | 2000-08-02 |
| CN1145174C CN1145174C (en) | 2004-04-07 |
Family
ID=9540949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001009974A Expired - Fee Related CN1145174C (en) | 1999-01-18 | 2000-01-18 | Loading device and method for hoisting nuclear reactor core |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1145174C (en) |
| DE (1) | DE10001634B4 (en) |
| FR (1) | FR2788628B1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1323405C (en) * | 2004-12-16 | 2007-06-27 | 中国核动力研究设计院 | Material changing, loading and unloading process flow for fuel assembly of straight-moving nuclear reactor |
| CN100345220C (en) * | 2002-10-15 | 2007-10-24 | 里尔有限公司 | Tool for assisting loading of a nuclear fuel assembly inside a nuclear reactor core |
| CN100350509C (en) * | 2002-10-15 | 2007-11-21 | 里尔有限公司 | Method for loading nuclear fuel assemblies inside a nuclear plant reactor core and device therefor |
| CN101826372A (en) * | 2010-03-15 | 2010-09-08 | 中国原子能科学研究院 | Gripping apparatus for operating reactor core assembly |
| CN103000237A (en) * | 2011-08-19 | 2013-03-27 | 巴布科克和威尔科克斯核能股份有限公司 | Nuclear reactor refueling methods and apparatuses |
| CN103474112A (en) * | 2012-06-08 | 2013-12-25 | 中国核动力研究设计院 | Reactor internal hoisting tool |
| CN103594134A (en) * | 2012-08-15 | 2014-02-19 | 广东核电合营有限公司 | Fuel assembly loading method for reactor core of nuclear power station |
| CN106601317A (en) * | 2015-10-20 | 2017-04-26 | 韩国电力技术株式会社 | Spent fuel transfer device for transferring spent fuel between storage pools |
| CN109390062A (en) * | 2017-08-03 | 2019-02-26 | 韩国电力技术株式会社 | For mobile system and the method for feeding nuclear fuel using it under the modularization of nuclear fuel processing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1402045B1 (en) * | 2010-10-18 | 2013-08-28 | Ansaldo Nucleare Spa | AUXILIARY SYSTEM TO ASSIST A SYSTEM OF HANDLING OF FUEL ELEMENTS OF A NUCLEAR REACTOR |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1252519A (en) * | 1969-10-07 | 1971-11-03 | ||
| US3948723A (en) * | 1974-01-02 | 1976-04-06 | Combustion Engineering, Inc. | Device for facilitating the insertion and withdrawal of fuel assemblies from a nuclear reactor |
| FR2588689B1 (en) * | 1985-10-11 | 1987-12-24 | Fragema Framatome & Cogema | NUCLEAR FUEL ASSEMBLY HANDLING MACHINE AND REACTOR LOADING METHOD THEREOF |
| US4954311A (en) * | 1989-01-10 | 1990-09-04 | General Electric Company | Control rod housing alignment |
| JPH06324175A (en) * | 1993-05-13 | 1994-11-25 | Hitachi Ltd | Positioning device for control rod guiding pipe |
| US5490185A (en) * | 1993-07-23 | 1996-02-06 | Westinghouse Electric Corporation | System for automatic refueling of a nuclear reactor |
| JP3247534B2 (en) * | 1994-02-18 | 2002-01-15 | 日本原子力研究所 | Control rod guide tube mounting device for HTGR |
-
1999
- 1999-01-18 FR FR9900457A patent/FR2788628B1/en not_active Expired - Fee Related
-
2000
- 2000-01-17 DE DE10001634A patent/DE10001634B4/en not_active Expired - Fee Related
- 2000-01-18 CN CNB001009974A patent/CN1145174C/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100345220C (en) * | 2002-10-15 | 2007-10-24 | 里尔有限公司 | Tool for assisting loading of a nuclear fuel assembly inside a nuclear reactor core |
| CN100350509C (en) * | 2002-10-15 | 2007-11-21 | 里尔有限公司 | Method for loading nuclear fuel assemblies inside a nuclear plant reactor core and device therefor |
| CN1323405C (en) * | 2004-12-16 | 2007-06-27 | 中国核动力研究设计院 | Material changing, loading and unloading process flow for fuel assembly of straight-moving nuclear reactor |
| CN101826372A (en) * | 2010-03-15 | 2010-09-08 | 中国原子能科学研究院 | Gripping apparatus for operating reactor core assembly |
| CN101826372B (en) * | 2010-03-15 | 2012-11-14 | 中国原子能科学研究院 | Gripping apparatus for operating reactor core assembly |
| US10490311B2 (en) | 2011-08-19 | 2019-11-26 | Bwxt Mpower, Inc. | Nuclear reactor refueling methods and apparatuses |
| CN103000237A (en) * | 2011-08-19 | 2013-03-27 | 巴布科克和威尔科克斯核能股份有限公司 | Nuclear reactor refueling methods and apparatuses |
| US11887739B2 (en) | 2011-08-19 | 2024-01-30 | Bwxt Mpower, Inc. | Nuclear reactor refueling methods and apparatuses |
| US10878970B2 (en) | 2011-08-19 | 2020-12-29 | Bwxt Mpower, Inc. | Nuclear reactor refueling methods and apparatuses |
| CN103474112B (en) * | 2012-06-08 | 2016-05-18 | 中国核动力研究设计院 | Reactor core internals lifting device |
| CN103474112A (en) * | 2012-06-08 | 2013-12-25 | 中国核动力研究设计院 | Reactor internal hoisting tool |
| CN103594134A (en) * | 2012-08-15 | 2014-02-19 | 广东核电合营有限公司 | Fuel assembly loading method for reactor core of nuclear power station |
| CN106601317B (en) * | 2015-10-20 | 2018-07-06 | 韩国电力技术株式会社 | For conveying the spent fuel conveying device of spent fuel between storage pool |
| US10062461B2 (en) | 2015-10-20 | 2018-08-28 | Kepco Engineering & Construction Company, Inc. | Spent fuel transfer device for transferring spent fuel between storage pools |
| CN106601317A (en) * | 2015-10-20 | 2017-04-26 | 韩国电力技术株式会社 | Spent fuel transfer device for transferring spent fuel between storage pools |
| CN109390062A (en) * | 2017-08-03 | 2019-02-26 | 韩国电力技术株式会社 | For mobile system and the method for feeding nuclear fuel using it under the modularization of nuclear fuel processing |
| CN109390062B (en) * | 2017-08-03 | 2022-10-14 | 韩国电力技术株式会社 | Modular lower moving system for nuclear fuel processing and method of refueling nuclear fuel using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10001634B4 (en) | 2010-04-15 |
| DE10001634A1 (en) | 2000-07-20 |
| FR2788628B1 (en) | 2001-04-06 |
| CN1145174C (en) | 2004-04-07 |
| FR2788628A1 (en) | 2000-07-21 |
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