DE1589851C - Device for handling nuclear elements in a nuclear reactor - Google Patents

Description

1 2

The invention relates to a device for hand- Embodiments of the invention are in the subdivisions of core elements in a nuclear reactor, the claims cited.

a reactor accommodating a reactor core. The features of claim 2 are for core containers has, in which there is at least one opener loading machine from the French patent for introducing a control rod by means of a 5 font 1304 797 known.

Control rod drive arrangement is located, with a With regard to claim 5 is from the French

Auxiliary transport housing for removing the control see patent specification 1415 744 in the case of nuclear reactor loading rod drive device, with a machine over the opening known, an operating device with lifting device to be brought, which has an axially a radioactive radiation shielding housing telescopic section, on one of which 10, which has an annular Storage space end has a gripping device for releasable gripping for .Kernelemente and a for receiving through the opening to be transported core · '■ a lifting device serving passage, the axial elements is provided, and aligned with one in the opening to an opening of the reactor vessel voltage to be used and extracted from it and at such a distance from the opening guide sleeve. .:; . ^: 15 is arranged that by the lifting device

A facility of this type is promoted from the UK core elements to the storage space or Patent 844,765 known. ' can be removed from this. :. '

In this known device, the guide fits The features of claim 6 are taken from the

sleeve not exactly in the opening; also USA.-Patent 3 138 535 known,
it does not extend from the top of the 20 British patent specification 844 765 is about opening into the interior of the opening. It is also not even necessary for the generic term of claim 1 that the guide sleeve is exactly known with regard to claim 8, one for observing the opening, because the gripping device is used to detect processes in the reactor vessel from per se control rods, but optical Observation device on the support arm is used for torn off control columns and is therefore occasionally hung up.

borrowed the gripping device and thus the guide With regard to claim 9 is from the British

sleeve must be pivoted slightly to. one . Patent 974,248, a method for loading and exposed portion to be able to take at least a portion of a reactor core ¹ of a demolished Steüerseils unloading. In addition, the loading. through a reactor vessel opening by means of a known device, there is no need for a control device, in which the reactor core consists of a clamping device for the telescopic section of several adjacent columns, each on the upper edge of the guide sleeve. separate the reactor vessel feasible through the opening, so that there is no reason to assemble core blocks in which the core blocks stacked in the known device, the guide-adjacent columns individually sleeve extend from the upper edge of the opening. 35 are passed through the opening.

The object of the invention is to provide for the control rods

In the reactor core there is a relatively wide access area for loading machines from the British patent opening to provide what is known because of the required font 974 248.

Ease of movement of the control rods and their space The characterizing features of claim 12

is appropriate as required, but on the other hand for the 40 an exact guide to the font 844 765 is known for loading machines from the British patent telescopic section. . .
To achieve implementation of fuel elements. ■ ^; The setup described above will! after-

To solve this problem, the device is explained in more detail on the basis of the drawings, of the type mentioned at the outset, characterized in that it shows

the lifting device Mn 'of a housing of an operating 45' Fig. 1 is a sectional side view of a use device used, 'the optional service device with a part of a reactor vessel provided with an opening in place of the auxiliary transport housing on the opening,
can be placed that the upper end of the opening Fig. 2 is a plan view on an enlarged scale

about in the EbejleVder ;; Outer surface of the, reactor. on. the operating system according to Fig. 1, / ^
container is and that the guide sleeve, from 50 Fig. 3 on an enlarged scale, a sectioned area of the plane .: the outer surface of the reactor view of a part of the operating device after container starting in the direction of the interior of the Fi g. 1 with a partial reactor vessel provided with an opening and, a guide for the - a reactor vessel and - with part of a _{reactor core located in the telescopic section, the., Lifting device .... _ r} reactor vessel, ..
forming, in the opening 'is attached ".""""' • ' ^J1 -""~' - '"■' 55 ^ -FigM "ίήϊ ^ enlarged" scale and tin ge

The telescopic, section ^r deir ^ Hebervorrich- broken view part of the operating device is thus used to convert: core elements device according to FIG. 3; "?;: R j <f. Ei
precisely guided, while after removal of the: Füh- F i g. 5 in section: View of an auxiliary transport

a wide opening is available, housing, the control rod and a control rod drive through which the control rods can be operated. 60 device contains, '*: ^l ' - / '-'
Since the guide sleeve from the upper edge of the F i g. 6 is an enlarged sectional view of a

The reactor vessel extends into the interior of the reactor vessel, telescoping tube completely pushed into one another, around the upper edge of the guide section of a lifting device which forms a partial sleeve essentially on the outer surface of the operating device according to FIGS - 65 Fig. 7 a partially broken sectioned direction or the auxiliary transport housing as a standing view of the telescopic tube section according to Fig. 6 can be placed on the surface, if necessary in a completely expanded position,
circuit of a slide valve. F i g. 8 shows a section along line 8-8 in FIG. 6,

3 4

9 shows a section along the line 9-9 in F ig. 6, which is the gripping claw head in the first position

Fig. 10 is a section along the line 10-10, and is displaceable to a second position,

in Fig. 6, in which the gripping claw head is in the second

Fig. 11 in broken and sectioned view ment (see. Fig. 15) is. Under the action of a

a holder for a gripping claw head, whereby the 5 spring 193 is the mandrel against the second position

Bracket and the gripping claw head part of the clamped. To move the switching element iri

Form the lifting device of the operating device, the first position is the gripping claw with pneumatic

Fig. 12 is a cross-sectional view of the assembly showing devices 187, 192 provided. 11 in at least one part of a reactor core to the position according to FIG. 11, different positions, which are guided under a viewing angle rotated by 90 ° compared to 10 through a position in a reactor container according to FIG. 11, where the reactor core ( see Fig. 3, · · \ and 17) consists of a large number of adjacent columns from Fig. 13 a section through a part of the lift-separable core elements 12, the device of which the measurements inside the telescopic tubes are chosen so that they can be guided through the opening of the gripping claw head 15 contained according to FIGS. 6 and 7. The core elements control elements are conveyed through the opening in such a way that, in FIG. 14, a section along the line 14-14 in a plurality of adjacent; Columns initially all-Fig. 13, borrowed core elements of a certain level, and FIG. 15, on an enlarged scale, a sectioned view of the next view of the level in the operating device shown in FIG. 20 being conveyed. _ ^:. Fig. 1 and 2 used gripping claw head, the _ "", ■ ". ■"'"',""" - in the representation ^ according to ^{Fig. 15 is connected to a core L} device for handling core elements element , ^; '.:. ^A - Design of the reactor.,;

Fig. 16 is a plan view of the gripping claw head. The above-described device for handing according to Figs. 15 and ^; . . 25 have. From _: Kernelemeriten is shown in "connection with Fig. 17 in a schematic representation" a top - a nuclear reactor, "which looks at an arrangement of core elements for encasing a reactor core, a reactor container 11" made of chips, which the operating device is suitable. having concrete. Dec in Fig. 3 "shown reactor-The device described above (see Fig. Ibis 5) core consists of a plurality of core elements is used to handle core elements for a 30 12 hexagonal cross-section, which is on a support nuclear reactor, which a plurality removable core support 13 are stacked in order to have adjacent column elements 12, which form a reactor core, from separable core elements 11. The device - as explained below - contains a sleeve 35, which can be inserted into the opening 14, of a control rod drive 49 and one for inserting and removing the device 53. The core elements can sleeve in or out of this opening serving auxiliary in each case be assembled so that a reactor core transport housing 54ί The device contains with the ~ desired core characteristics also receive an operating device 18, which is over. The core elements can; moderating, the opening 14. The operable 40 cleavable opening device 18 enriched with cleavable material is contained with a material that is reflective through the sleeve 49 and is also provided with a guidable lifting device 25. The lifting device 25 is composed of at least two of these materials carries 'a gripping device or one. V ;,. '. ". i-} ' "_' ^: ί! 'M ^: i "^ "',., ", '','.' ■. .- '.' Γ- ·. ^ -, · Greifklaüenköpf 35, ^r; ! of the core to transport; \ 58 und'die SteuefstabäMriebseiririchelementen can be connected elements are During Ergänzüng'der Kernejerhehte through the opening releasably connected to the core 45, the control rods .. The sleeve 49 - 53 tung from one of the openings fourteenth removed and! which is used to guide ^one of the gripping device -during individual core elements '12 'dürct this, opening' geihres transport durch'die ¹ opening. [[ - ^! y; ^{; '.':} - ^'': leads.' The one in F1 g; 3 shown, '"from ^! Core blocks ^; the lifting device 25 (see: Fig. 6 to 14) contains a complete set of reactor core f / Jyernnprf ^^^ deri';. ';] ™ in addition a: Telescope part63, · the' irinerhälb 'of 50 Reactor ^{tank. Required'eä 3} ^ freeri .... Raüni '; the opening is extendable ^' uni 'a' guide-. Der Hebef reactor core,: the to-.iÄusri ^ tog ^; αέϊ; blocks "to vomcfitung 'to ^sJ scKaff'eri ^! uhd '^^^ the opening ^^ required ^ isjt7. ^f may reach weicfe: The extension of the telescope part 63 serves openly. 'llü'soUen. '. The'obeh.K Έϊήή a pneumaHs'c ^, _ direction ¹ is not · m ^^

correct, carries, the ¹ gripping claw head 35 by a '55 wehdbar,': but; .. for. "numerous ^ others, Kernreäk-

GeienkarmlOS ^^ der ^ mif ^ einfn; ScHaltarm 1Ö6, törerf.'mit ^ 'entfeirnbaperi ^ femelemen ^^

bound ^ ist.Der / ArffllÖiifiatwenigstehs one, part; surface. ; des .ilReäktprjbehäiters ^

the 'for the ^ outer cover ^ of the' arm * gescnmol - lining; 16 au $; emeirstahliegierüng ^

zeii ^; can be '; -if ³ der'Arm ¹ mJ.einer SteUuiig _s Auskloidurig ^ etztVsicÖ'Jd ^^

stuck in which the. Passage ^ of the "Greifkläueh- 60 and enüef each ^ eils; ^^ aIs ^ ögförmg ^: ^ l ^ ctf ^^" dei

head through the opening. ^: - over the outer surface..jdes "Re ^

The gripping claw head 35 (i. 'Fig.' 15 and. 16) ;. is Mift '; ¹ ^: ';;""X'""'"" ^ ^J ^^^! ΓΐίΓ ^^^^^ W "with ^ mer; gripping claw l? ^^ see; the one ^ first ^ in
h ^! di

Core element "not" gripping '"position;and"a; _s r;. ; \ -... _v ... _; ;. "_{; I. r} ; iv ..,., ^ ₍ .k, "·";., _{r! F} , ^ -, .. · ..: - "v

second ^ steepness one in one ^; can; in which she / with a ^ s "[_"' The above' described * "Einnchtung ^ 'zu;> Hand-

T? I ^: irji in ^^ griffsterit; ' The grasping claw contains v _on nuclear felemonteQ ^ contain an irijiden JE ig · ΐ

is ^{: t} a ', switching element''183, ^^ in the followingi and; 2 ^. illustrated ^^

Ί das'between ^{1 of} a first position, in set-up rooms not shown by iri 'in the drawing *

gen (ζ. B. an overhead crane) in a position arranged above one of the connections and contain tubular counterweights openings 14. 41. The tubes 38 serve to accommodate sagging. When the core elements are exchanged, core elements 12 arranged in the reactor are gripped by the gender parts of the lifting chains 37 and the non-illustrated operating device, the pneumatic and electrical lines, container 11, 5 with the counterweights on these elements a raised force exerted by the forward force below the operator,
Direction arranged opening 14 led out and the lifting device 25 can from a position

Temporarily stored in a shielded area, in the upper part 21 (see FIG. 1) on one in the area of the until the operating device is lowered over a memory opening (see FIG. 3) container is performed. When setting the operating io. .

Device via a not shown in the drawing. The lower end of the operating device 18

Provided storage container, the core elements carries a valve 42, which can be opened and optionally for storage or for removal in this closing of a through container arranged in the center of the valve be turned off. The control device has a slidable plate 43 made of lead, tang then becomes a further not 15 The lead plate 43 shields during transport The storage container shown is conveyed, the freshness of the operating device its outer areas Contains core elements. The operating device is biologically and is not shown in the drawing the fresh core elements of this container and provided appropriate facilities to create one the gas-tight seal is again conveyed through an opening in the reactor vessel in the area of the central area, after which the operating device the 20 lasses of the valve 42. Before arranging the operating core elements through the opening and into an opening device 18 such as that shown in FIG The desired position within the reactor vessel position is via the opening 14 of the valve 42 arranges. -. ; .. \ similar valve 44 arranged, which also has a

According to FIGS. 1 and 2, the operating device has a sliding plate 46 made of lead. The inn a central housing, which consists of one of these valves is explained below, ren hollow part 19 and an upper hollow part 21 the in the valve 44, arranged sliding plate consists. To create a biological shield 46 creates a biological shield and murig of the area surrounding the device, gas-tight sealing of the central opening of the Both parts J 9, 21 are made from a thick-walled valve 44.

Shielding material made. The lower end of the 3 ° The required shielding and various lower part 19 is closed by a plate 22. other elements of the operating device 18 tra-Ein slotted guide tube 23 is about a gene to their weight. Every reduction of this Opening 24 of the plate 22 attached and engages in the weight allows direct cost savings, lower hollow part 19 a. The opening 14 and that there the capacity of the lifting crane or a similar one Guide tube 23 are connected to an inside of the upper 35 transport device for the operating device Part 21 arranged cylindrical lining 82 18 can be smaller. To protect people aligned. The one between the. Guide tube 23 on the in the upper area of the device and the. Inner surface of the lower part 19 working annular elevator mechanism is a formed space 26 is provided as a storage area for removable repair platform. This the core elements 12., 4 ° platform consists of one. Bottom plate 47, which around

The; Outer surface of the upper part 21 is arranged approximately in the cross-shaped housing and through its; Middle with three radially directed arms 27 whose lower plate 32 is supported. The plate 32 is provided. ^J The ends of the arms 27 are connected up engages in the areas of the peaks of the cross arms hanging members 28 od for the crane. Like. Provided, the housing has a short path length through the sides of the carriage of the Bedienungsyorrichtung 18 45 34 addition walls. The bottom plate 47 is so thick, serves. ;;;. ';. ";.', ';' ■ 'il ..."? >'".'.',......"w.' ■ '.- .'.>., ■ .-. ■, ■■ [- .. ^. s - ^ .-- that a perfect shielding of the

At the upper end of the upper .Teiles21, a platform running people is achieved. This ring-shaped disc 29, which is shielded by four elements, is particularly desirable when there are rectangular elements, which are vertically aligned and are connected to the upper part of the webs 31Tgeiragen with the radioactive core in the operating device. -The platform is with . a transmits the Scjbejbe 29 to a nähme.einer on \ up safety railings 48 provided the unused zügsyprnchtang serving, housing .; DasJ, housing platform can from the top of the device entbesteht from a lower ^ ',. plate _32.: ; one. ' pbexen removed and "parked in a suitable place. The plate 33 and side walls 34, which normally 'add to' the weight of the platform / thus do not add up to the shape; a: owl with four equal ^ 55 weights of the operating device when it is on

(see Fig; 2) 'are arranged. In the housing, there are "their various places in the system. Several / drive and compensating gears are located. The drive motors required for the operating device are not shown in the drawing. The shielding does not have to be as thick as yours Task "is the. Control and promotion of would have to be if there was no platform shielding for per-fötten; 37, 'which; the lifting direction 2 $, of the occupants is provided.
Raise and lower the operating devices18.

Operation of the various elements ^{5 of the} lifting device - C. The guide sleeve

tuhg serving electrical and pneumatic As already mentioned, the control panel contains

Lines are conveyed by rollers, which in the direction of the lifting device 25, which in the. Reactor drawing not shown and in two arms of the 65 container 11 made of concrete; is lowered - by. the 'im cruciform ^ housings are housed .; Four core elements located inside the container downwardly directed tubes 38 stand through openings and lift. For reasons set out later, it is intended 39 with the inside of the cruciform housing in the lifting device during its insertion into

the reactor vessel, precisely guided and aligned. For this purpose, after removing the Control rods and the control rod drive arrangement, the guide sleeve 49 is inserted into the opening 14. the Guide sleeve 49 has an annular shoulder 51 which extends radially in the region of the upper end of the sleeve reaches outwards. The liner 16 of the opening 14 has a corresponding annular shoulder 52 and serves as an axial holder for the guide sleeve 49.

The guide sleeve 49 can be fastened in the opening by locking elements which are not shown in the drawing and which are in engagement with suitable spring elements. The guide sleeve 49 can be fastened by wedging, also not shown. As explained below, the inner surface of the guide sleeve 49 is designed as a guide for the lifting device '. To seal the opening 14, a sealing ring 40 is screwed onto the flange 17 as shown in FIG. The sealing ring 40 is with the; Flange 17 and with _; a shoulder 50 of the valve 44 is tightly connected and counteracts an escape of the reactor coolant. This seal enables a large tolerance; Opening. The space above the reactor vessel 11 and; between /, the various flanges 17 is filled with a granular shielding material 55 and through a. Plate 45 closed.

D. Auxiliary transport case

..: The. The guide sleeve 49 and the control rod drive arrangement 53 are inserted into the opening 14 through an auxiliary transport housing 54 shown in FIG. 5 and removed therefrom. The auxiliary transport housing has a tubular protective housing 56 which contains an elevator device arranged in an upper housing 57. The control rod drive arrangement 53, which is provided with two control rods 58, is suspended within the auxiliary transport housing 54 in the auxiliary transport housing 56. The lower end of the auxiliary transport housing 56 is designed as a radially outwardly directed, annular flange 59 which is screwed to a lower valve 61. The valve 61 includes a sliding plate 62 which is a biological. Shielding and "· gastight sealing of the passage arranged in the valve 61 causes _{:: o} , y ^ / ;;; ·: ..: ■■ ,, ;;,.",: \\ ...: ..-. ; ·, ... _: .

The auxiliary transport case is used to remove the control rods and; the control rod drive assembly 53 from the opening 14, which is used to supplement the = core elements; will. Here, the valve 44 is initially over-this; Opening; arranged and secured in position by devices shown in the ': _{drawing'not: s} e.g. screwed. The auxiliary transport housing is; subsequently-by crane, pd; like; zu, a storage container ) for>; the · control rods and the control rod suspension conveyed. After parking the control rods and the control rod drive arrangement in the storage container, the auxiliary transport housing ^ 54;, · ziireinem; _? Storage container for the guide sleeve 49 ^ transported and>this'; Sleeve: aius the j-container ξ removed ^ The 'auxiliary transport housing is then, via "the opening 14 conveyed ·' the for the introduction wheels ^ core elements ... served where the between the,: valve 61 · ^ and the; -valve 44: - Existing space>. _f vpii ^ impurities- cleaned Wfe In a gas-cooled reactor: it is advisable to carry out the cleaning with a type of gas that is also used as a coolant. The valves 44 and 61 are then opened and the guide sleeve 49 bis lowered to rest on shoulder 52,

.5 in which it with the aforementioned spring-engaged locking elements in Intervention is brought about. Then the valves 44 and 61 are closed again, the room between these valves cleaned and ventilated and

ίο the auxiliary transport case 54 transported back to a storage area or in a position for another task. _: . ·, ■ - ·. ^..:. - · .. ■■: · ■

E. Lifting device

After inserting the guide sleeve 49 into the opening 14, the operating device 18 is in the position shown in FIG. 1 The position shown is conveyed via the valve 44. The space between valves 44 and 42 is cleaned, after which the valves 42 and 44 are opened.

At this point the lifting device 25 is lowered by the elevator device: the operating device 18 through the opening 14. The lifting device 25 contains a telescopically acting part 63, which is explained in more detail below. The part 63 is normally cylindrical. For its guidance in the lining 82 arranged in the upper part 21 of the main housing of the operating device 18, the part 63 is provided with corresponding elements on its outer surface. Under the action of the mutually aligned inner surfaces of the lining, the guide tube and the sleeve, the part 63 and the ^{equipment contained in this first} part are appropriately aligned during their passage through the operating device 18 and the opening 14 . The lower end of the lining "; 82 arranged in the upper housing 21 and the upper end of the guide tube 23 are in; arranged at a distance from one another, the transport of core elements to 'their. £ storage, in'den ^ the tube 23 enveloping annular; _Space:; 26veönöglicht. A device; y for performing this operation is hereinafter referred to beschriebenoDas tube 23 is provided with slots to this; Vg) jarichtung to the bottom of the annular portion 26, .-, b.efördern to ·: As a result of the _{Ausrichtung-;} <Lining 82, of the Führüngsrphres23 υηααεΓ _; Ρΰηίΐϊΐ ^ 8Μΐ86 49, υηα due to their axial distances; wjrd _; for the displacement of the telescopic; part 63. (and the ;; device contained in this, part;) ,; from its memory division int upper _v part.21- to _; its operating position; in..der, opening 14; a.-compulsory and secure leadership created ^ / nori ^ -io ^ i; u; ■ ^r ; . ·, -. ' The telescopic: .ausbildei, part 63. the lifting device 25 is in .den'F i g. 6; ündr7, in more detail

. shown, the _; Fig _{. 6;} the part. 63 in; its fully collapsed position, located in the liner 82, and the E i g. 7 part 63

in his in; the guide sleeve, 49 '. arranged νοΠΥ constantly; disguise; ; Fig. JPress Fig, 6 and 7 denTeU 63-in;. sectioned and partially broken view ^ _The; F, i g., 8; to 10 show .different elements of the; _; Part 63 in cross section. The part 63 has an exterior. Tube 64 and a: inner tube 66 on, the, m; the in; Fig. 6, completely nested positions are aligned coaxially to one another .sind. The outer

109516/170

Tube 64 is at one end through one with which from the inner surface of the outer tube 64 to

Tube connected end plate 67 closed. That is directed inward. In addition to wheels 84 and

inner tube 66 is at one end by an 86 is at the lower end of inner tube 66 for it

end plate 68 connected to the pipe is closed. ensured that the tube 66 at a radial distance from

In the completely nested position of the 5 outer tube 64 is held. To ^{1 are for} this purpose

Part 63, the plates 68 and 67 abut one another. at this end of the pipe several wheels 88 are arranged,

The end of the facing away from the face plate 67 for engagement with the outer surface of the inner

Tube 64 is directed inwardly from the stop ring 71 with a threaded tube 66

NEN annular part 69 formed, which are with a. As already mentioned, part 63 is at his

Stop ring 71- is screwed. The inner passageway operates through the liner 82, the guide tube

The knife of the stop ring 71 is smaller than the 23 and the guide sleeve 49 is guided. ^:

Inner diameter of the outer tube. The inner Da die. inner guide surfaces of these three egg

Rohr66 has an element between its pipe ends that are the same, only the inner surface of the

ordered plate 72, the outer surface of which is shown and explained in detail over the lining 82.

Outer surface of the inner tube 66 extends out by 15 It will be understood that the cooperation

one on. the JTube 66 applied annular school between the elements on the outer tube 64

ter to form. In the fully expanded and the inner surfaces of said three elements

NEN position of the part 63 stands.die is the same through the plate. The outer tube 64 has a plurality of lengthways

72 formed annular shoulder with the upper one its length at an axial distance from one another.

Edge of the stop ring 71 engaged around an annular flange 89 arranged on. These flanges

further displacement of the inner tube 66 to are provided with several wheels or rollers 91,

Outer tube 64 to prevent. which are arranged at a distance from each other on the circumference

When raising and lowering the part 63 through the net.

in the upper part of the operating device 18 length- These wheels are with vertical guides95

The arranged elevator will engage the inner tube 66 25 which is attached to the inner surfaces of the liner

supported by the lifting chains 37 while the are designed to a desired radial

outer tube 64 on the inner tube slidably spaced and a peripheral alignment of the outer

is arranged and carried by this. To achieve the end tube 64 for lining,

Plates 67 and 68 are not included in the drawing, as can be seen in the example of FIG. 8

openings shown, which are flanged to the through 30 some of the wheels and other wheels below

serve to guide the lifting chains through the end plates. an angle to a radius of the inner tube

From Fig. 8 are arranged for fastening the inner, so that a peripheral movement

Tube 66 on the lifting chains 37 serving elements turned off and during the transport of the

evident. A plate 73 is transverse to the inner tube part 63 a suitable orientation is achieved.

66 aligned. To create a fixed arrangement, the plate 67 is provided with several wheels 90,

Two vertically aligned webs 74 are formed between the two corresponding to the wheels 91 and

See the plate 73 and the face plate 68 are arranged arranged.

net. According to FIG. 8, the stop ring 71 carries several wheels 92, the plate 73 three lifting chains 37 and for spacing a plurality of upwardly directed arms from the plate 73 and aligning the tube 64 at its 77 on the plate 73 is held. The rod 76 is to serve at the lower end. The arrangement shown and its one end by a stop 78 and on the formation of the wheels 91 ^ 92 and the guides 95 its other end by a spring ring 79 in has certain advantages. Other wheel arm 77 secured. However, the tubes 64 and 66 are also usable in the 45 arrangements. Areas of their upper ends and the lining. By means of a pneumatic device arranged in the area of one end of the inner 82 in the upper part of the housing of the operating tube, a positive control of the relative axial position is achieved in the direction with vertically aligned slots 81 in order to Fig. 1 shown position of the lungs of the tubes 64 and 66 created,
Telescopic part 63 a cleaning 5 °, the pneumatic device is to be made possible with one of the chains 37 and the chain wheels 36. hollow tubular piston 93 is provided which engages through the pneumatic and electrical lines' for an aligned opening in the plate to the piston which is arranged in the inner gripping device ⁵ Rohr 68th The piston 93 is with the plate 67 through are in similar vertically oriented slots 83 one-with-one ^; Ball bearing provided coupling 94 guided; These slots are connected in the upper ends of the 55, which allows the piston ^r a little clearance to the tubes 64, 66 and the liner 82: - plate 67; Inneren- of the pipe interface between ^DEM: the connection tube 64 ^ ■ carries the plate 73, thereby / the probability is 'K For the separation of the inner outer Rohres66 the probability of a!' Jamming on. Piston 93 · and; the plate 67 has several wheels 84 which are lowered on the inner surface of the outer. The piston 93 is through; ¹ und'zur tables corresponding to the wheels 84; cylinder-axial 9.7 ^·: a "Stirnren'Rohres 64;; run, the plate 68 carries a plurality 6d kappe96 sealed and innerhalb.eines pneumä wheels 85, yerschiebbär, the 'solution through serve suchlike task the inner Stirnkäppe a ^98:;.. verschlossenVist transit to Verschie'- and outer pipes ¹ 66 bzw.- 64 are two of the ^exercise, the piston 93 'in the cylinder 97 are of the wheels or rollers 86 provided in a solid waste periphereri drawing lines, not shown, was held to each other "'r:'. ⁶ 5, for supplying a controlled amount of gas in

The wheels 86 are arranged one above the other and serve the cylinder 97. The wheels are lowered by the chains 37 in "'' dpti lining 82

86 roll on vertical surfaces of a guide 87, the outer tube 64 is at its highest

11 12

Position against a stop, not shown, lungs of the gripping claw head between its holdings. This is done by maintaining an end of travel.

suitable pressure in the pneumatic device.

tion. After receiving the in F i g. 7 completely arcuate pivot shown vertically aligned to the extended position shifts the 5 hold, two mutually parallel joint parts are the outer tube with the inner tube. In the position shown in FIG. 3 114 by hinge pins 116 with the support arms 107, the inner tube 66 engages in and through hinge pins 117 with the gripping claw reactor vessel, while the outer tube 64 is pivotably connected at the head, the hinge in the Sleeve 49 remains so that the lifting device carried by the bolt 117 into a recess of the pipe 66 inside the gripping claw engages exactly at the head. The gripping head can be arranged through. When the lifting device is withdrawn through the device 25 explained below, the lifting device is actuated and the device is pivoted along an arc located.

82 has reached the uppermost position, 15 In the event that im. Inside the reactor, the pressure prevailing in the cylinder 97 eliminates container 11 difficulties 'occur', "ft. B. a are broken to the pipes 64 and 66 their return is broken ^" are devices er in their fully nested position that is desired enable the operator to gain an insight into this. The fact that tubes 64 and 66 allow reactor vessels to be inside. A television camera is sometimes used for this purpose by applying pneumatic pressure to its full extent. The mutually contracted position be maintained, manages device described above is used for this during the transport of the lifting device by purpose, a television camera ^{118, etc.} which: effortlessly to the liner 82, the pipe 23 and the sleeve "49 different places in Reaktorbehälteririneren eineine long guide face In. In addition, it contributes to the "avoidance" of additional lightweight support and control devices for the television spring, achieved by the pneumatic pressure, to avoid jamming of the camera and a separate opening in the reactor lifting device in the guide elements. container for the television camera equipment is the

As already mentioned, the lower end of the television camera 118 ′, fastened to an arm, carries an inner tube 66 which is oriented between the two arms 108 for the transport of the core. elements serving gripping claw head 35. The 30 The setting of the camera corresponds to the mounting and alignment of the gripping claw head position of the arms. The setting of the devices serving television are shown in FIG. Controlled at the lower end of the inner transmission arm 106. To deflect the through tube 66 , an image taken by the television camera coaxially to this tube by 90 ° is attached. The lower end of the 35 is a mirror 119 between the two arms 108 and the cylinder 99 is fastened to the arm 115 by means of a tube 66. As a result, the screwed plate 101 can be "provided" and supported by a ring-elongated cathode ray tube of the television camera-shaped support 102 in a recess formed at the lower end of the tube 66 aligned in this way in the longitudinal direction of the arms 108. The fact that it does not reach beyond the arms and the plate 101 has a slot 104 through which a 40 does not create any overlapping problems. To the actuating arm 106 ^; is led. As in the following, the lighting of the area on which the television set is explained, the arm 106 is used to operate the camera 118 via the mirror 119, holding arms of the gripping claw head: The operation of the serves one with the arm 115; connected light-actuating arm takes place through a device, the source 121. ■■■■■■■ .- ■■ '■:' ■ "" f _i ./''-:f;fy- ^: --f ^: '. ; _: '\ f' - /; is also explained below. \ 45 In "Figs. 13 and 14 are 'the" for! Control

With the plate 101 are (two of the plate to and to ^; transport of the actuating arm 106 the downwardly directed support arms 107 firmly connected. At the end devices shown "This line of a place, which about a third of the distance from the lines contain an upper plate 122-.the with the upper end; the support arms 108 are screwed together, support is screwed to the upper end edge of the cylinder 99. arms 108 for the gripping claw head by means of articulated 50 The plate 122 is pivoted in an annular bearing 123: 109 with the support arms 107, The actuating arm 106 'engages through a hehmüng. "of the plate and *' pivotally connected in ring-shaped Geienkbolzeri 111 with the ends of the support arms 108 recesses of two inwardly facing. Die'voirf is held by 55 for removal of the assembly are d;: remote from pivot pin 111 of the inner annular flanges 124 ^Rohres66; ends'der.'Tragarme 108th The bolts 112 are connected to holding arms 113, which are detachably screwed to one another from the part of the inner tube 66 with their flanges 124 upwards, the upper part / of the gripping jaw,

are.' In the case of fine deviations, the plate 122 is provided with a central opening

Betätigüngsarmes1106 ^^ d ^^ TTagiinmp) 8} jm. see in the one with a screw thread deserve; Hinge pin release ' ^? pivoted ^ with the Öelenkf 60 see insert 126 is used. This insert is bolt; 112 a 'circular arc' runs through which, through two circular center points arranged at a distance from one another, the 'Geei ^ iikbqlzfeilO ^ feHaen ^ Here ^' ■ ring-shaped bearings 127 in the central opening, the; gripping claw head ^ is supported between a position an outwardly facing flange lung! 'pivoted;. which is immediately below the 129 provided sleeve 128 is connected to the upper Stirnmneren ^Ä tube 66;. befiridet ^ undjei ^ r Stel Hing,'. 65 portion of the insert 126 bolted Under the Wirhierzu ^ .. the amount of about uni Äbstandes kung between the sleeve 128 of the insert to the plate 122 is the öelenkboizefr Ϊ09 ^rad; 112 is rotated away ^ the '' rotational movement of the sleeve; 128 wM Fi'g. ir'ürid-12 'show ^r two ^{: r} different positions through ^ "drive motor'131' ^ exerted

13 14

Drive shaft 132 via a cap 133 to which a cylinder 156 is welded with its inwardly turned front end of the sleeve 128. The front annular flange 157 with the plate 154 is preferably used as the motor 131, a step motor, screwed to. The upper end of the cylinder 156 enables the position of the actuator arm 106 to be controlled extremely precisely with an outwardly facing flange 158. See the setting of the actuator 5, which is screwed to a gear 159. poor by the motor 131 is carried out by a central outer circumference of the gear 159 is in a screw 134 arranged in the sleeve 128 , which is mounted with an annular bearing 162 which is screwed into one of the insert 126. By rotating the inner tube 66 inwardly facing flange 161, sleeve 128 and insert 126 , the screw is located.

134 shifted axially to the plate 122. The lower end of the screw arranged below the plate 122 is a support plate 163 for a gear reduction in a recess formed between the flange 161 and a recess 164 through a second flange 164 (not shown in the drawing) in a sliding holder 136 for holding. The flange 164 is also secured from the inner actuator arm 106. The sliding support tube 66 is directed inward. The inner tube is tion 136 absorbs an axial thrust through an annular shoulder 138 separating between the two flanges 161 and 164, which is formed in a recess formed in the upper part, these tube parts being in the areas of this holder. Flanges are bolted together. A gear is arranged: The sliding bracket 136 is therefore supported in I66 by a fixed in the support plate 163 depending on the axial displacement of the shaft 167. The gear 166 meshes with screw; 134 ^: towards plate 122 or away from it 20 the teeth located on the inner circumferential surface are conveyed. ": ;;, ;;.! ../ · .// of the gearwheel 159 and. Is connected by a pinion 168

The bracket 136 is driven with one in its center. The pinion 168 is at the end of one

open-edged ,, space 139 provided ,, through which a drive shaft 169 is attached, which is through a-central

Journal 141! ! for "the actuator arm 106 engages. Opening of the plate 163 engages. The drive shaft 169

The one . End ! The actuator arm 106 is through 25 is in the plate 163 through an annular bearing

one. Bushing 142 ! .Swivel-mounted, mounted on the bearing journal " 171. The drive shaft " 169 is supported by a

141 stored. The guide of the sliding bracket motor 172 is driven. The engine 172 is through

136 is carried out by two guide posts 143 which are carried with a motor support plate 173. The plate 173

the plate 122 is firmly connected and to this lower has an 'upwardly directed annular

are right aligned. According to Fig. 11, the ßp flange 174, which is connected to the inner wall of the inner

lower ends of the. Guide post 143 is screwed into a tube 66. The plate 173 has a

Raised part 144 of the lower plate 101 attached. for implementation, the drive shaft 169 serving

The guide posts are hollow and engage through the central opening.

openings 146 of the sliding bracket 136. When driving the motor 172 is done by rotation

Creation one. Clearance are at two of the 35 of the drive shaft 169, the gear 159 through the

Cylinder 99 rotated adjacent corners of the sliding shark "" gears 168 and 166. By rotating the

tion 136 vertical chambers 147 provided. ^:: Annular, boiled down to its inner circumferential surface

With up and. Downward displacement of the screw toothed gear 159 becomes the cylinder 156 and

134 the sliding shaft 153 and thus the sleeve 148 is rotated by the motor 13l. The one with the

136 on .guide post 143! on -.-. and 40 plate 122 screwed sleeve 148 rotates the plate

pushed down. As a result, the actuator and thus the cylinder 99 and the plate 101. The

arm 106 including hinge pin. 111 shifted and motor 131, the sleeve 128, the insert 126 and the

so that the arms; 1Ö8 around the hinge pin 109: the screw 134 rotates together with the

pivots, thereby changing the position of the gripping bracket 136 and the guide post

claw head takes place. The excluded in the plate 45 lOl 143. This means that between the screw 134

The slot 104 formed enables the insert 126 to pivot and no relative movement occurs

Actuator arm 106,; during this the arms 108 and thus the actuator arm 106 only shifts one rotationally. This is, by comparison! / Of movement and none; other movement suffers.

Fig. 1 and 12 "can be seen". . '/. / ./. V _c i ^. "~; V, A step motor is preferably used as the motor 172

_; / As already; mentioned, can. Gripping claw head 50 turns in order to achieve an exact setting of the lifting device ₇

by rotating the cylinder 99 in an arc to obtain 'tion by rotating; Through a suitable

the. ■ cylinder axis / can be swiveled. This. ', Tat-f control of the two "motors; 131 and 172 känii sache, creates' in '' cooperation with / the ^ through the desired position, of the gripping claw head 35

the 7 actuation farm 106; ^ caused; Movement is set exactly?! .'...'- ';"' _: j, ,, '.'. [■ '-" // ,,'}. ",

one; universelle.:,Einstellbewegung/ for the ,,. gripping 55 - One in the. Transportyomachtung for the Betäklauenkbpf. / The / 'rotation' of: cylinder 9? X; eff follows' tigerärm 106 / occurring 'disturbance;' in the. Strengthens

by the rotation of the * top plate 1221 '"This power supply or other malfunction can result in a.

Rotation is effected by a sleeve 148 'which leads to the setting in which the gripping claws are to be used

her; lower, end an outward facing in a z. B- shown in Fig. 11- and to the "inner}

annular " flange 149 " which is hung up, not in alignment with tube 66.

upper front side.; of the plate 122 , screwed: is' .. The case of the! Claw head not aligned

upper; End; dep. Sleeve 148 is with an outward position, Vzürbeucht · ,, \ yerden '.. must ,.'can; on

swept iFlanscli'151, provided; "the with, 'der- under- his removal- from"(the' ReattQrbehpter _!. vefzictjtet

side .a! / support plate .152 for "the motor 131 will be available.! To facilitate such a situation!

is screwed .; A “cylinder 153 /: envelops / the. Motor 65 is the actuator arm 106 / with a part 176 from

131 and d. is with its / lower front edge., with which one differs from the material of the actuator arm4

Plate 152 , Robbed.! Das'obere _f Stirneride, Xde.s borrowed material by mistake. piej melting temperature of the

ZyHndefs 153 is through / a! Plate 154 closed: Material of part 176 is higher than that in the reactor

15 16

The coolant temperature prevailing in the container and the upper chamber 188 and a lower chamber 189 divided considerably lower than the melting temperatures of the slightly smaller diameter. The upper Materials that make up the remaining elements of the section 186 of the mandrel 183 is through a you-lifting device .are made. A heating coil 191 hung against the walls of the lower chamber 189 I77, the holder of which is not shown, is sealed on FIG. The upper section 186 carries one in the Part 176 applied, when faulty working chamber 188 arranged piston 192, which through is by a not shown in the drawing a seal arranged on the piston circumference against directions such a high current through the heating the chamber walls is sealed. . ·· ■

coil 177 sent that the part 176 melts. Here- The gripping claw shown is in an operational

by the actuator arm 106 are forced out of service 10 position in which they are to grasp a set and the arms 108 .under the action of the core element under the action of a screw-gravity downwards. 'pivoted' until the pair of gripping springs 193 is forced apart. The Kölklauenkopf 35 immediately. below the inner ben 192 is below the ;; Action of springs 193 Tube 66 is located and is aligned with this. moved towards the lower end of the chamber '188.

. In place of the above suggestion, the 15 To increase the; Reliability of the device entire actuator arm 106 or at least one are additionally two springs - ■ provided. An upper material is made of such a fusible upper end part of the cylinder 187 with its hinge pin. The screwed plate 194 in the claims. The plate 194 is an integral term "actuator arm", which is connected to a stake part 196 that goes into the cylinder arm and all of the connections for the arm. On 20 of the 187 engages and seals at its upper end, the use, one. Heating coil can be dispensed with. A cylindrical ^{extension 5 of} the Pflockteiles'196 'can be used if the fusible part 176 or other as an upper stop for the “piston 192: The upper fusible part of the arm made of a material part 186 of the mandrel engages through an opening , that when the coolant plate 194 rises. The part 186 is arranged in this opening close to the temperature of the 25 arranged in the Reaktprbeh older, but axially displaceable; A channel 197 reactor melts by a certain amount .. In stands with the upper chamber: 188 below the column "all cases" the actuator arm is so connected to 192; By importing a gas out of order that the gripping claw head can swing down into the upper chamber and upward displacement of a retractable position. In the case of pistons against the action of springs 193, a gas-cooled nuclear reactor, in which the upper end of the core is conveyed by the gripping claw to a disengaged position, is used to Chamber 189. ■; ■■ .- ^; ,;. . ·: 'Facility ,, z. B. is about 120 ⁰ C, is a. The lower end of the cylinder 187 is sufficient with a melting temperature of 370 ° C. The temperature prevailing on the downwardly facing tubular part 198 of the reactor core, through which: the mandrel 183 is guided. Multiple temperature can normally be increased by decreasing the finger 199, which form the 'gripping claw, the flow of coolant to this temperature is raised from the tapered. End of the "tubular part are.,.:. \ 198 down and are each'radial to the mandrel-out-

· ■ - ■ ^; - F. The gripping claw head &quot;&quot; directed, ^ the Fmger W9Jst ^ with a shoulder 201

...- · ...... ·: · ;; ■: ■ ■ ·:.; ■.; ■ -. ::. ■■■■■. ■■ :: 4P provided. The: with 202 designated, lower ends

'· \ The details. des'_; Gripping claw head there are 35 the fingers 1991 are:, below the shoulders: according to FIGS. 15 and 16 can be seen. The job of being angled inside. For Betätigung'der gripping claw carries .Greifklauenkopfes consists in grasping and holding the mandrel 183 ■ a slightly; above the probe of the core elements in the reactor vessel, around this conical shoulder 203 arranged 184. The FIG. 15 elements lead out individually through the opening 14. 45 shows the piston 192 i in its lower position: reversible. Each of the. Core elements 12 is with a position. In this position the shoulder stands against her. a plug 179 yerart with the ends 202 of the fingers 199 in engagement, lock hole; 178ί provided, rbetween the fingers so after; be pressed outside; that ends of the bore is an annular shoulder 181 which shoulders 201 below; the ring-shaped shoulder 181 attached just above the shoulder 181 is in the 5 ° of the core element: When! lifting the; Gripping hole. : a; _{: Ringförrniger,:} tapered portion klauenkopfesrwird 'the iKernelement .; 'also' an- X ^ 2 _K amjgebi \ äet / Oift, 'S ^ iilteT / gelaiigt ; - _r as after; -... lifted. ;; By creating?! 'A ;;; pneumatic standing explained ^ m ^ gripping elements, or, a "pressure on the underside; of the piston; 192 is the, gripping claw in -) Eirignff ^ and is tibb, with the gripping piston against the .effect; the! springs, 193 aufklauenkopf i ^^; Γ, 1 ί ^ r • ^■:: ^; rr. / · · ^, a ^ r ^ i-- 55 ^w * .ärts pushed until the shoulder; 203. * out of engagement. . *; _l: Arn.'Greifkiauenkppf 35 'depends;_a; 183 ,, mandrel; of _{the: ends;} dei 202; finger; gelarigt; - DieiInnen: · in, riäcristehend.': the manner _described: the carrier y - surface _{s of} the; probe. 184;. got.?. with; the; · outside elements ^ or ■ the _; 'gripping claw, carries: the -tip of the ends ^ 201.SPi irr engagement, -! that the; The ends after jPorns, are provided with emericconical probes, which are pushed inside. After that, the ends after with the “rejuvenating” part 182; the; hole so shifted inside; the shoulders; 201 'die 178, _v dera ^' züs ^ rrrmenktyrdäß 'by ■ a post-ring-shaped; shoulder; 181; free; so: that ;, der; Dorn -183 stenend r; eschnebene: Äbtas ^ guide to be removed from the hole 178; can. The fin

des hqinsläi ^ m ^ tineCmiü &Tä-'St ^ ang m der. Drills can be made of resilient: “Materiai, so quiet _; The _: upper portion 186 of the ends 202 being biased against the mandrel. Domes 183i has ^: ζίηεη _; larger diameter; as 65 ;;; To create a / to facilitate .the Einder ·; lower ^^ section _; , UQd, - engages in a guide of the mandrel 183: in?; The bore-178 dienehpneumätischenrZylm (Wji87: central _; ^ arranged the automatic into a gripping claw head

17 18

Prevents an arrangement formed from scanning elements, each in the middle of the springs 219

uses, which is arranged for automatic correction of the gripping and placed in suitable ball bearing rings

Claw head position serving error signal generated. leads are so that the balls with consideration for the

The lowering of the gripping claw head can cause springs to roll. The balls are therefore between

are broken until all adjustment errors are corrected 5 see the plate 223 and the plates 213 and 214

are yawed, after which ■ the lowering movement up to its movable to allow a lateral displacement of the cylinder

to enable automatic termination of Linders 187 as explained below, but each vertical

can be continued. If the mandrel 183 correctly prevents kale displacement relative to the plates

is inserted, which is present under the piston 192 .

Seeing pressure can be removed so that the springs io the sensing elements which can move the error signal to 193 down the piston to promote the adjustment of the dome 183 in the bore 178 er fingers into engagement with the core element. testify are on the upper face of the plate 213. In this context it should be mentioned that the attached. The upper scanning element 226 is held by a gripping claw only by pneumatic pressure in its one rod 227 with a U-shaped yoke 228 disengaged and that after being bound. The yoke is provided with plates 229 , the side of this pressure the gripping claw under the action of the springs 193 in engagement with the outer surface of the cylinder 187 are quickly in engagement with the. The sensing element 231 has come astride the core element. Due to this arrangement, the middle part of a U-shaped yoke 232 is arranged to release the core member without generating. The yoke 232 is provided with plates 233, a pressure in the pneumatic cylinder not possible which coincides with the outer surface of the cylinder 187. The operating device 18 can therefore be provided with a handle to provide a displacement of the cylinder in a manually operated device, one in the direction of the yoke 228 which enables a rapid evacuation of the gas. If the movements are sensed in a vertical direction, the gripping claw is sensed in engagement with the core element.

is reached, the scanning device generates a signal, 25 An axial displacement of the dome 183 to the cylinder through which the gripping claw head including the core element linder 187 is automatically lifted by two pairs of switches 234 and and scanned through the opening in the 236. The switches are carried in pairs to the operating device 18. arranged in order to increase the operational reliability. As already mentioned, the gripping claw head is attached to the upper pair of switches 234 with an annular 108 formed on the upper part 186 of the dome aligned parallel to each other support arms 30. On the pivot pin 112, which engages the elevation 237 and creates a display support arms 108 with the arms 113 arranged at the upper end of the gripping the mandrel position when the piston 192 connect to the claw head, nem lower reversal point (the gripping position is a socket 204 The socket 204 claws) is located. The pair of switches 236 arrives in is through ring-shaped. Bearing 206 in the arms 113 35 is an annular bearing formed on the upper part of the mandrel. One end of each pivot pin is provided with a shaped recess 238 when the piston is in a stop 207. The opposite of its upper reversal division (disengaged claw) end of each pivot pin has a screw. This shows the disengaged and the thread on which a nut 208 is screwed gripping position of the claw. To a rotationist. Between the nut 208 and the adjacent 40 movement of the plates 211, 213 and 214 against the bearing 206, a sealing ring 209 is arranged. To avoid cylinders 187, the lower plate 214 is arranged between the bearings 206 and the arm 108 by means of a plurality of sliding blocks 239 and a plate 241, spacer rings 205 . The arms 113 are coupled to the cylinder. The plate 241 is directed upwards from a cover plate: 211 , the lower end of the cylinder facing outwards. One part of a housing for the scanning device 45, plate 241, has guides 242 '. One deforms. A cylindrical wall 212 extends from a speaking number of guides on the lower deck plate 211 downward. Two horizontal plate sides of the plate 214 are arranged, which are perpendicular to the th 213 and 214 are close to the center, specifically aligned with guides 242 : The sliding blocks 239 of the lower end edge of the cylinder 212 are arranged. carry lugs that slide in the associated guides. The plate 211 has a centrally arranged right-hand 50 slide. This arrangement enables the lateral corner-shaped: opening 216 ' on. The plates 213 and displacement of the cylinder ^s l87; 213 and 214, and zwaruhter exclusion provided a and ^218: 214 against the plates are provided with cross-disc-shaped openings 217,211. ■ ·; «B ''-;'- ■■ ' ■■ '.:. ·'. : ;;; :. ^ :: 'r ^{; i} rotation of the cylinder against these plates. V:: '; The cylinder 187 engages through the openings 216- '. On the lower part of the gripping claw head 35 there is a 218 and is therefore fastened laterally against the plates 211y 213 55 contact plate 243 .; This ^: plate can be moved through and '214 '. ' The lateral displacement multiple bolts 244 and 245 are slidably supported. It is restrained by several coil springs 219 , bolts 244 and 245 hang in a suitable distribution, which are connected at one end with bolts 221 from the plate 241. The bolts 244 contain two. The bolts 221 are on the plates 213 and helical springs 246,; under: whose action "the 214. attached. The other ends of the springs 219 60 plate 243 - against a'-aiP'dem 'bolt 245 are connected to bolt 222 , which in turn is pressed onto fixed annular stop 247: ¹ , one with The cylinder 187 connected plate 223 If the gripping claws are positioned too far into the bore of the core. Under the effect of the radial, e.g. B. is introduced elements 12 'prevents the plate 243 at intervals of 90 ° around the cylinder, the destruction of the Toggle Kernelements- For additional parent springs 219, the cylinder 65 in the provision is at a sufficient displacement of the center openings ^216; 217 and 218 ^T pushed. of the plate 243 an override switch 250 free-one - axial displacement of the cylinder - against the given and thereby the plates 211, 213 and 214 controlled by the motors is through balls 224 erte further downward movement of the gripping claw head

19 20

stopped. At the edge of the plate 243 there are several in the first all core elements of a layer Wheels 253 arranged at a distance from one another are attached. and then the core elements of the underlying These wheels are used to guide the gripping claw- location away. Assume that Fig. 17 head and the gripped core element, which represents the upper end of the reactor core. At EntRäder on adjacent surfaces, such as B. the pages 5 loading of the individual areas will be the first adjacent core elements, roll. upper core element of the middle pillar and then the

From the plate 241 a sleeve 248 extends downwardly from the upper core elements of the adjacent columns and envelops the tubular portion 198 of the lifted. This process is again cylinder 187 layer by layer. The sleeve 248 is at its lower fetches.

End with an outwardly facing flange 249 io When loading, before inserting the core, the element formed in the plate 243 of the middle column per layer initially only Recess 251 engages. In the chamber or the core elements of four lateral pillars recessed 251 suitable facilities are listed. If first the z. B. numbered from 1 to 4, around the core elements through the plate 243 onto the core and then the middle core element downward force exerted can be introduced, the middle core palpation and the weight of the core element during element rather than from above from the side (i.e. between its To determine the transport. see the core elements 1 and 4) are used,

The one shown in the figures, described above, which makes it on the lower edges of the middle Scanning device generates signals for an automatic core element does not require beveled corners, control system for the gripping claw if these 20 beveled corners make it difficult to create the Core elements picks up and stores. The scanning middle core elements and increase the direction of manufacture is of course not at the cost shown. When using the middle core embodiment from the side limited. For example, elements are always adjacent guide surfaces for wise through additional scanning a larger guide wheels and at least two straightening surfaces for Sensitivity or reliability can be obtained. 25 each deposited core element available. If to- - next only the middle core element is introduced,

II. Procedures for operating the core element are not provided for this core element

A. The core construction ^{: han} f ^en Freda's central core element is not on the side,

■: · ■■■■■■■■■ but is used by vertical lowering,

In the following, the adjustment is not guaranteed with reference to FIG. Described after the Seitkernes. From Fig. 17 it can be seen that the middle core element can be used, the two core elements (ie the core which are inserted for easier gripping by gripping elements 6 and 7) with the reactor core consisting of several core elements 12,
claw each connected to a central bore 178, although the core elements of the central column are the same. The core elements shown consist of each area against the core elements of adjacent hexagonal graphite blocks, which are several, not shown columns offset downwards, the designation should contain rods made of fissile material. "Location" identifies a core element in the middle column. The core elements can also be made of reflective material that is made approximately at the level of the core elements or moderating material or one of the adjacent columns is arranged. If mehsonstige similar construction, said the eral core areas loading to be barren discharged method The G in F i 17 illustrated reactor area is turned on for this type of a core block, the control rod drive mechanism over "is reversible ^removed.:., The The guide sleeve is inserted and the core part consists of several areas 261, indicated by double lines following the work process described above, each of which has seven vertical 45 before another opening is used. average "columns of the different areas guide sleeve removed and ■ Steuerstabäntriebs-261 core members 12 are arranged with two device again in its position ^carries: the indene is. Thereupon vertical ¹ holes 252 ^; provided that for ^; The control rod drive device can control from; an indication of the reactivity of the reactor giant for opening it is removed and the above work of control rods is used. The blocks of the middle process are repeated. The reactor core can also be loaded and unloaded from the columns 261 of the areas 261, thus area by area, offset downwards compared to the adjacent columns, whereby ^; in each case only one opening per area will be used to provide a 'cross to the intermediate surfaces of the core. ..ri:,; ':
to prevent blocks' acting lateral shear. 55 '. By this loading; and discharge process, the "to take up" the control rods and drive fronts, the space requirement above the reactor core is reduced, direction-serving openings are, immediately the otherwise · required; istj: unv one of core; over the central pillars of the different areas Toggle elements composite y entire column or sorted = "Wherein -i as described above - einzelnes'langes Kerhelement to remove :: In Verdie loading and emptying of the application of the latter Kemblöcke 60 Kemelemente.soll which occurs through these openings; -; :, y ^ i; y.mr;: u2 ' _: Distance: between the upper face of the rea- ί: ο: ννμα ^ . (fi | £ _ !. niiüi; i: tv ^ xuu <vjn'wi el oib torkerns and the upper end of the inner chamber of the ;; ■ ,,: ;;; fjb-πύ B ^ operating procedure _{: Γ} : _{;: [} , _{; Πii;;} r reactor vesselrsoi'groß-sein, - : that this-core-

In each case a whole 'area 261 ^: is elements at the same time arranged completely vertically after their removal from the reactor by'the core arranged above its central column and for opening

Opening 14 can be loaded or unloaded and only then aligned. In addition ■ < beyond

Another area through - one of the other, opening - enables the method described above; - one

gen loading or unloading. When unloading each area, simplification of the; Control device because this

Claims (1)

does not have to penetrate deeply into the core between adjacent columns, which is otherwise necessary is when every core block in a single column must be removed before moving on to the next column can be passed over. ■ '■' ■ The above-described device for handling core elements: requires in addition to the Introduce the control rod and drive devices openings serving no further reactor vessel openings. The complexity and the effort compared to comparable: reactors is significantly reduced, the reliability increased and the control simplified »The repair of the elevator device of the operating device is straightforward possible, although the otherwise occurring due to the shielding of the operating device Difficulties are avoided. Jamming the. Griffin claw head it in one to an opening not Aligned stance can be easily remedied. The risk of dropping a core element in the event of a fault in the power supply is eliminated. ■ ■ · ..,.; ■; .: '■ ;: Claims: S- "· ^1; means - for handling; core elements in a nuclear reactor, having a a reactor core receiving reactor vessel in which at least one opening for insertion of a control rod is by means of a control rod drive assembly, with an auxiliary transport casing for" removing the Control rod drive device, with a lifting device to be brought over the opening, which has an axially telescopic section, at one end of which a gripping device is provided for releasably gripping core elements to be transported through the opening, and with one to be inserted into and out of the opening. ^r guide sleeve to be extracted, characterized 40, that the. Lifting device (25) in a housing of an operating device (18). is housed ^: the optionally in place of the r auxiliary transport housing (54) ^: on the; opening (14) can be attached, .that. the upper end of the opening (14) lies approximately in the plane of the outer surface of the reactor vessel: (11) and that - .. the guide sleeve (49), starting from the area of the plane of the outer surface: of the reactor vessel (11), extends into Direction of the interior of the reactor-: tank extends and, '.. a guide for; the - · telescopic, section (64, 66) "of the lifting -:. ■ device (25) i forming," is fixed in the opening (14) . -. vV. ": ■■ ..7 λ ;; '·. ·?. · ■. ■':.. '■ .. ■; ■■. ■ · .-:. ~: y:' -.-. -; ■ - ··: 2. ^: Device; according to claim 1, characterized in that: on the telescopic section (64, 66) rollers or wheels (88, 91, 92) are provided;: which: guideways on the 'inner surface'; assigned to the guide sleeve: (49) ; see page 3.;. Device inachii claim Ii odefcr > 2i- _: characterized: by ¹ the ^: lifting device (25) ':. : supporting Bediehüngsvörrichtung (18) 'with a detachable Plattforiri (47), the thickness of which. selected “is that on: the platform (47) people 65 · are“ shielded from radioactive ”radiation i λ H. .4. Device according to Claim 3, characterized in that the operating device (18) has at least one guide tube (23) which can be axially aligned with the guide sleeve (49) and is provided with guide tracks which correspond to those in the guide sleeve (49). 5. Device according to one of claims 3 or 4, characterized in that the operating device (18) is provided with a radioactive radiation shielding housing (19, 21) which surrounds an annular guide tube (23). Storage space (36) for core elements (12) has that it has a passage (21, 82) serving to receive the lifting device (25); that this passage (21, 82) is axially aligned with the guide tube (23) and is arranged at such a distance therefrom that core elements (12) can be conveyed into or removed from the storage space (36) by the lifting device (25) and that the housing (19 ,: 21) in the area of. ·; Passage (21, 82) has guide tracks (95) which correspond to those in: guide tube (23). ■ ■■ · ■ '.;. Ό:; ■ ;; ■;,; -. ■; · ^! : ;;: i ·: - ";:"'. .- ■ 6. Device according to 'one of the preceding' claims, characterized in that ~. the gripping device has a carrier (107), a gripping claw head (35) and at least one support arm (108) which is pivotably connected in the area between its ends to the carrier (107) and at one end to the gripping claw head (35), that an actuating arm (106) is pivotably connected at one end to the end of the support arm (108) facing away from the gripping claw head (35) and that the lifting device (25) is connected to the end of the actuating arm (106) facing away from the support arm (108) connected drive devices (131, 132, 136,141; 122, 148,153,156, 166, 168, 169, 172) , by means of which the gripping claw head (35) can be pivoted and rotated into a position that is not aligned with the guide sleeve (49). 7. Device according to claim 6, characterized in ■ that at least; a part (176) to be melted by a heating device (177 ). of the actuator arm: (106) is made of a material whose melting point is lower than the melting point of the material of the support arm (108). ,; ■ 8 .; Device according to "Claim 6 or 7, characterized in that an observation device" serving to observe "processes in the reactor vessel (11)":;, (118, -119,. 121) - _: directly on the support arm (108) ;. is attached. /: 9. Method: for loading and unloading at least part of a reactor vessel through a reactor vessel opening by means of: a: device according to one of claims 1; to 8 ^ .wobei 'DER reactor core _r, -: a plurality;!. _; to each other ;;. adjacent columns' consists / each of / individual, - through the-. Opening feasible; .Core blocks-: to-. are composed; characterized in that the kernel elements (12) stacked in adjacent columns (261) are layered; individually guided through the opening (14). ^, .-- ^: ■, :; ;, · ''':': · ■ 10. Procedure for loading and unloading a.Reactor core, · which is in one with; several openings provided; Reactor vessel is arranged, 'according to claim 9j; through this; marked, that opening (14) after opening the core elements assigned to each of the individual openings (12) through the openings. 11. A method for loading and unloading a reactor core, with a control rod drive device for each opening is provided according to claim 9 or 10, characterized in that in each case the control rod drive device (53) only one opening (14) away, the desired number of core elements (12) through this opening guided and only the control rod drive device (53) returned to its position before the control rod drive device is removed from another opening. 12. The method according to claim 11, characterized in that that after removing a control rod drive device (53) the guide sleeve (49) inserted into the opening (14) and this before resetting the control rod drive device (53) is removed again. 13. Procedure for the discharge of a reactor core, whose kernel fields are put together in groups, each with a middle one Having a column and a plurality of outer columns surrounding this column, according to any one of claims 9 to 12, characterized in that in each case within a layer of a group initially one Part (z. B. 1, 2, 3, 4) of the outer core elements (12) is arranged, then the middle (5) Core element (12) sideways through a free space between the outer (e.g. 1, 2, 3, 4) core elements (12) are inserted and arranged and then the remaining (e.g. 6, 7) outer core elements (12) are arranged. For this purpose 3 sheets of drawings 109 516/170