EP0007822B1 - Vorrichtung zur Überführung von in einer Flüssigkeit untergetauchten Materialien und Anwendung dieser Vorrichtung zur Überführung radioaktiver Abfälle - Google Patents

Vorrichtung zur Überführung von in einer Flüssigkeit untergetauchten Materialien und Anwendung dieser Vorrichtung zur Überführung radioaktiver Abfälle Download PDF

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Publication number
EP0007822B1
EP0007822B1 EP79400425A EP79400425A EP0007822B1 EP 0007822 B1 EP0007822 B1 EP 0007822B1 EP 79400425 A EP79400425 A EP 79400425A EP 79400425 A EP79400425 A EP 79400425A EP 0007822 B1 EP0007822 B1 EP 0007822B1
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EP
European Patent Office
Prior art keywords
shaft
liquid
tube
materials
fin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP79400425A
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English (en)
French (fr)
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EP0007822A1 (de
Inventor
Achille Pellerin
Jacques Penen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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Commissariat a lEnergie Atomique CEA
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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor

Definitions

  • the present invention relates to a device for transferring above the free surface of a liquid of materials immersed in the latter.
  • It relates to a device more particularly intended for the transfer of radioactive waste stored at the bottom of a swimming pool for example with a view to their introduction into a reprocessing installation.
  • the helical fin is driven in a helical reciprocating movement so as to ensure the upward movement of the materials to be transferred.
  • the present invention specifically relates to a device allowing a suitable transfer over the surface of a liquid of materials immersed in the latter without requiring significant energy.
  • the device of the invention as characterized above advantageously takes advantage of the presence of the tube and of the realization at the base of the latter of an air mattress located in the shell, and in which the lower part is located fin.
  • the device of the invention makes it possible to ensure the transfer of materials through a liquid without generating unacceptable mechanical stresses in the fin and without requiring significant energy.
  • said means for bringing the materials into the lower part of the tube comprise a flat wall connected to said shaft and to said tube, this wall being located near the lower end of the fin and a supply duct for the materials on said wall and means for supplying materials to said conduit.
  • said means for supplying compressed air to the space internal to said ferrule comprise a duct placed inside said shaft and connected by its upper end to a device for supplying compressed air.
  • the pressure of this air is chosen to be just sufficient to allow the creation of a mattress in the form of a "bubble" in the lower shell, in the manner of a plunger bell, that is to say just sufficient to balance the water pressure that overcomes it.
  • radioactive waste swimming pool water for the purpose of the supply of a conduit which can constitute the supply conduit of a facility for reprocessing radioactive waste, the latter possibly for example consisting of irradiated magnesium and graphite waste coming from fuel elements of a nuclear reactor the graphite gas sector.
  • the device of the invention is partly contained in an enclosure 2 of biological protection constituting the support frame of the device, the latter being mounted through an opening 4 provided in the upper wall of said enclosure 2.
  • the enclosure 2 comprises, in a tank 27 a liquid for storing solid waste, not shown, generally water, the level of which is visible at 28.
  • the device of the invention comprises a shaft 6 of vertical axis made integral on the one hand, by a part of its external wall 7 located inside the enclosure 2, of a helical fin 8 and, on the other hand, by its upper end, a frame 12 by means of which it is supported by the enclosure 2 and coupled to motors 10 intended to animate it with a going movement -and helical.
  • helical back and forth movement we mean a movement whose translation components, alternately up and down, are very weak (a few millimeters at most) and whose rotations alternately dextrorotatory and sinistrorotatory are also of amplitudes very weak (maximum 1 degree of angle); In a preferred embodiment of the invention, this movement, which takes place at a frequency of 1500 per minute, is reduced to a vibration barely perceptible to the eye.
  • the frame 12 is mounted on the enclosure 2 by means of elastic dampers 14 (the enclosure 2 supporting said shaft 6).
  • a tube 16 of the same axis as said shaft 6 is made integral with the outer edge 9 of said helical fin 8, the upper edge of said tube 16 being connected to said shaft 6.
  • said tube 16 is extended at its lower end by a ferrule 24 whose free lower edge is located at a level lower than that of the lower end of said shaft 16, the space delimited by this ferrule 24 at the base of said tube 6 under the fin 8 which, for its part, remains in the liquid, being intended for producing a mattress of compressed air contained in space 29.
  • a conduit 26 for supplying compressed air to the space internal to the ferrule 24 is placed inside said shaft 6 and connected by its upper end to a compressed air supply system (not shown in the figure). ).
  • said tube 16 is provided at its lower part with a waste introduction conduit 20 emerging above a flat wall 18 or wall for receiving the waste to be evacuated made integral with said shaft 6 and said tube 16 and at its upper part of a chute 22 for evacuating waste in a conduit 30 leading to the outside.
  • the conduit 20 opens into the liquid, in which the waste is constantly immersed.
  • waste introduction conduit 20 is inclined so that the latter flow therein by gravity after having been introduced into it by any suitable means.
  • the operating mode of the device of the invention as described above is as follows.
  • the helical fin 8 once animated by a helical vibratory movement by the motors 10 transmits to the radioactive waste brought to said wall 18 by the pipe 20 near its lower end the movement necessary to make them rise through the tube 16 to 'to the exhaust duct 22.
  • each of the points of said helical fin 8 is animated by the helical vibratory movement
  • said tube 16 provides stiffening of the fin by mechanically connecting each of its turns and, on the other hand, prevents any pulsation of the volume of water external to the tube 16 so that the latter offers no resistance to the vertical component of the helical movement of the fin.
  • the air mattress created and maintained (practically without flow through the tube 26 since it suffices to compensate for any leaks) inside the ferrule 24 between the liquid and the base of the helical fin is compressed and decompressed with each vertical movement of the fin due to the downward and upward translational movements thereof.
  • This avoids any significant energy coupling between the fin and the liquid located at its lower part which could otherwise, in particular by pump effect, oppose the regular transfer of solid waste in the liquid to the surface and would cause an expense of important and harmful energy.
  • a low energy is sufficient to cause the rise of the radioactive waste from the conduit 20 towards the evacuation conduit 22 and the mechanical stresses generated in the helical fin are acceptable.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Jigging Conveyors (AREA)
  • Processing Of Solid Wastes (AREA)

Claims (4)

1. Vorrichtung zum Fördern von in einer Flüssigkeit untergetauchten Materialien über die freie Oberfläche (28) der Flüssigkeit, gekennzeichnet durch eine mit einer schraubenförmigen Schaufel (8) verbundene Welle (6), die in die Flüssigkeit teilweise eingetaucht gehalten ist und deren eines ihrer Enden sich über der freien Oberfläche (28) der Flüssigkeit befindet, durch eine Einrichtung (10), die auf die Welle (6) eine schraubenförmige hin- und hergehende Bewegung überträgt und die sich über der freien Oberfläche (28) der Flüssigkeit befindet, durch ein Rohr (16), das dieselbe Achse wie die Welle (6) hat und einerseits mit seiner Innenwand mit dem äusseren Rand (9) der Schaufel (8) und andererseits mit seinem oberen Rand mit der Welle (6) fest verbunden ist, durch ein Mantelrohr (24), das das Rohr (16) an seinem unteren Ende über das untere Ende der Welle (6) hinaus verlängert, durch eine Einrichtung, die die Materialien in den mit Flüssigkeit gefüllten unteren Teil des Rohrs (16) zuführt, durch eine Einrichtung (22), die die Materialien am oberen Teil des Rohrs (16) entfernt, und durch eine Einrichtung (26), die den unter der Schaufel (8) gelegenen Innenraum (29) des Mantelrohrs (24) mit Druckluft speist.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Einrichtung zum Zuführen der Materialien in den unteren Teil des Rohrs (16) enthält: eine mit der Welle (6) und dem Rohr (16) verbundene ebene Wand (18), eine Leitung (20) zum Zuführen der Materialien auf die Wand (18) und eine Einrichtung zum Speisen der Leitung mit Materialien.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Einrichtung zum Speisen des Innenraums (29) des Mantelrohrs (24) mit Druckluft eine Leitung (26) aufweist, die innerhalb der Welle (6) angeordnet und mit ihrem oberen Ende mit einer Vorrichtung zum Speisen mit Druckluft verbunden ist.
4. Anwendung der Vorrichtung nach einem der Ansprüche 1 bis 3 bei der Förderung von am Boden eines Reaktorbeckens befindlichen radioaktiven Abfällen.
EP79400425A 1978-06-30 1979-06-26 Vorrichtung zur Überführung von in einer Flüssigkeit untergetauchten Materialien und Anwendung dieser Vorrichtung zur Überführung radioaktiver Abfälle Expired EP0007822B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7819623 1978-06-30
FR7819623A FR2432751A1 (fr) 1978-06-30 1978-06-30 Dispositif de transfert de materiaux immerges dans un liquide

Publications (2)

Publication Number Publication Date
EP0007822A1 EP0007822A1 (de) 1980-02-06
EP0007822B1 true EP0007822B1 (de) 1981-08-26

Family

ID=9210198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400425A Expired EP0007822B1 (de) 1978-06-30 1979-06-26 Vorrichtung zur Überführung von in einer Flüssigkeit untergetauchten Materialien und Anwendung dieser Vorrichtung zur Überführung radioaktiver Abfälle

Country Status (5)

Country Link
US (1) US4245737A (de)
EP (1) EP0007822B1 (de)
JP (1) JPS557194A (de)
DE (1) DE2960684D1 (de)
FR (1) FR2432751A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH660994A5 (fr) * 1984-03-05 1987-06-30 Osci Galvano S A Oscillateur et installation de traitement de surface.
JPS61119506A (ja) * 1984-11-15 1986-06-06 Shinko Electric Co Ltd 振動スパイラルエレベ−タ
US4859070A (en) * 1986-04-23 1989-08-22 General Kinematics Corporation Omniaxis apparatus for processing particulates and the like
US4775284A (en) * 1986-12-02 1988-10-04 General Kinematics Corporation Vertical mass flow conveyor
US5214883A (en) * 1990-11-07 1993-06-01 United Technologies Corporation Method and apparatus for processing articles requiring a surface finish
US5494151A (en) * 1993-08-06 1996-02-27 Shinko Electric Co., Ltd. Vibratory parts-feeder apparatus
EP2360537B1 (de) 2010-02-15 2014-04-09 ETA SA Manufacture Horlogère Suisse Verfahren und Vorrichtung zur Fixierung eines Glases mit Gegenplatte
FR2983186B1 (fr) * 2011-11-24 2014-01-17 Technical Alliance Dispositif de transport vibrant helicoidal
CA2861964A1 (en) 2012-01-20 2013-07-25 Mayfran International, Inc. Vertical spiral conveyor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760503A (en) * 1952-06-21 1956-08-28 Carrier Conveyor Corp Spiral conveyors
US2985281A (en) * 1958-11-17 1961-05-23 Chain Belt Co Vibratory equipment using air springs
FR1360220A (fr) * 1963-03-07 1964-05-08 Commissariat Energie Atomique Dispositif de traversée de paroi
US3756372A (en) * 1971-02-24 1973-09-04 Nuclear Waste Systems Co Apparatus for removal of stored material from storage containers
FR2190696B3 (de) * 1972-06-30 1975-08-29 Constantin E Sa
SU505603A1 (ru) * 1972-07-21 1976-03-05 Днепропетровский Ордена Трудового Красного Знамени Горный Институт Им. Артема Вертикальный вибрационный конвейер

Also Published As

Publication number Publication date
US4245737A (en) 1981-01-20
FR2432751A1 (fr) 1980-02-29
DE2960684D1 (en) 1981-11-19
EP0007822A1 (de) 1980-02-06
JPS557194A (en) 1980-01-18
FR2432751B1 (de) 1981-02-06

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