EP0181602A1 - Bouteille à gaz pour tritium - Google Patents

Bouteille à gaz pour tritium Download PDF

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Publication number
EP0181602A1
EP0181602A1 EP85114127A EP85114127A EP0181602A1 EP 0181602 A1 EP0181602 A1 EP 0181602A1 EP 85114127 A EP85114127 A EP 85114127A EP 85114127 A EP85114127 A EP 85114127A EP 0181602 A1 EP0181602 A1 EP 0181602A1
Authority
EP
European Patent Office
Prior art keywords
gas
gas bottle
interior
tritium
protective container
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.)
Granted
Application number
EP85114127A
Other languages
German (de)
English (en)
Other versions
EP0181602B1 (fr
Inventor
Hans Johann Dr. Fabian
Jenö Patay
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.)
Forschungszentrum Juelich GmbH
Original Assignee
Forschungszentrum Juelich GmbH
Kernforschungsanlage Juelich GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Forschungszentrum Juelich GmbH, Kernforschungsanlage Juelich GmbH filed Critical Forschungszentrum Juelich GmbH
Publication of EP0181602A1 publication Critical patent/EP0181602A1/fr
Application granted granted Critical
Publication of EP0181602B1 publication Critical patent/EP0181602B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons
    • 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
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/002—Containers for fluid radioactive wastes
    • 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
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/015—Transportable or portable shielded containers for storing radioactive sources, e.g. source carriers for irradiation units; Radioisotope containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/232—Manufacturing of particular parts or at special locations of walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/045—Methods for emptying or filling by vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/038—Detecting leaked fluid

Definitions

  • the invention relates to a gas bottle for the inclusion of tritium to be stored.
  • Tritium the radioactive isotope of hydrogen
  • Tritium is a weak /? Because of its radioactivity, tritium therefore has only a low risk potential. Because of its properties as a hydrogen isotope, considerable effort is required to avoid contamination of the environment when handling and storing tritium. The high permeation and diffusion capacity of tritium, the occurring isotope exchange, the easy flammability and self-oxidation of tritium in air place considerable demands on the safety precautions to be taken.
  • Gas bottles are known for the storage and storage of tritium, which are gas-tight and pressure-resistant.
  • the gas bottles are only filled with tritium up to about half the atmospheric pressure.
  • tritium up to about half the atmospheric pressure.
  • foreign gases flow into the gas bottles, which contaminate the stored ones Lead tritium. If air flows in, for example, this also means a risk of explosion due to the formation of oxyhydrogen. Since no pressure gauges are attached to the gas bottles for safety reasons, a change in pressure in the gas bottle cannot be easily determined. Determining whether a gas bottle is still tight requires considerable effort.
  • the object of the invention is to provide a gas bottle for tritium which complies with the prescribed safety regulations, in which, on the one hand, a leak can be detected quickly and with certainty and, on the other hand, a leak in the gas bottle does not simultaneously contaminate the stored tritium.
  • the gas bottle is surrounded by a protective container, the interior of which can be evacuated.
  • the protective container is designed to be vacuum-tight and equipped with a pressure measuring cell to indicate the vacuum maintained in the interior. There is a vacuum in the interior of the protective container, so that if there is a leak at the Tritium gas bottle flows out into the interior of the protective container. Contamination of the tritium in the gas bottle by penetrating foreign gas is thus avoided.
  • the protective container also prevents direct damage to the gas bottle due to mechanical influences when handling, transporting or storing the gas bottle.
  • the pressure measuring cell reacts to a vacuum loss in the interior of the protective container and triggers a warning sign if it is designed accordingly.
  • the protective container In a further embodiment of the invention according to claim 2, it is provided to equip the protective container with two lockable connections for vacuum or gas lines.
  • the interior of the protective container can then not only be evacuated or pumped out if a leak occurs, but can also be rinsed out, for example with helium.
  • the latter is primarily for taking gas samples from the interior of the protective container advantageous.
  • the gas samples are used to determine whether a registered pressure increase in the interior of the protective container is due to a leak in the gas bottle or a leak in the protective container.
  • the pressure measuring point can be sealed off from the interior by means of a valve, claim 3.
  • the gas bottle must be emptied or inserted into a still undamaged protective container.
  • the gas bottle is therefore detachably fastened in the protective container. It is attached at a distance from the wall of the protective container, claim 5.
  • an externally operable device for actuating a cylinder valve attached to the gas cylinder is provided on the protective container.
  • the facility points a vacuum-tight access to the bottle valve, claim 7.
  • the drawing shows a longitudinal section through a gas bottle for holding tritium, which is inserted in a protective container.
  • a likewise cylindrical gas bottle 2 for tritium is inserted centrally within an outer protective container 1 which is cylindrical in the exemplary embodiment.
  • the gas bottle 2 rests in the interior 3 of the protective container 1 on a base 4 which is fastened in the protective container and supports the gas bottle at a distance from the wall of the protective container 1.
  • the design of the base 4 protects the gas bottle 2 from damage even in the event of greater mechanical deformation of the protective container 1.
  • a centering ring 5 is provided on the base 4, into which a base support 6 of the gas bottle 2 can be inserted.
  • the protective container 1 has a foot 8 on its base 7, so that the protective container with the gas bottle can be placed in the vertical position of its axis 9.
  • the axis 9 is also the cylinder axis of the gas bottle 2.
  • the gas bottle 2 is provided at its upper end 10 with handles 11 for lifting the gas bottle out of the protective container.
  • the gas bottle is fastened at the upper end in the same way as on the base 4 at a distance from the wall of the protective container 1 (by means of centering supports 12 on the container flange 13 of the protective container 1.
  • the centering supports 12 are screwed to the container flange 13. In FIG. 1, axes 14 of the fastening screws are shown .
  • a tritium line 15 with a bottle valve 16 for loading and unloading the gas bottle with tritium is also flanged to the upper end 10 of the gas bottle 2.
  • a cover 17 of the protective container is screwed to the container flange 13 in a vacuum-tight manner with the cover flange 18.
  • a pipe 19 welded to the cover 17 leads from the interior 3 of the protective container 1 to a measuring cell 20 with which the vacuum maintained in the interior 3 can be determined.
  • the measuring cell 20 can be connected to a warning signal transmitter.
  • the warning signal transmitter is not shown in the drawing.
  • valve 21 In the pipeline 19 to the measuring point 20 there is a valve 21 with which the measuring cell can be sealed gas-tight from the interior 3 of the protective container.
  • the valve 21 is closed if the measuring cell 20 is not in operation, in need of repair or is to be replaced.
  • the pressure in the entire interior 3 is controlled by the measuring cell 20.
  • the centering supports 12 have recesses 22 for this purpose, so that there is a spatial connection between the part of the interior which surrounds the gas bottle 2 and the part of the protective container enclosed by the cover 17.
  • connections 23, 24 for vacuum or gas lines are provided on the cover 17. From the drawing it can be seen that the connections are arranged in the edge region of the cover 17. The connections are equipped with shut-off valves 25, 26.
  • the connections 23, 24 are via a vacuum line connected to a vacuum pump when the interior 3 - for example after inserting the gas bottle - is to be evacuated.
  • the vacuum line and vacuum pump are not shown in the drawing. It is also necessary to connect a pump device if gas leaks into the interior of the gas bottle or the protective container and is to be extracted. In this case, one of the connections 23, 24 is connected to a pump device, by means of which a gas sample can be taken from the interior 3 and is analyzed.
  • the leak on the protective container 1, on the cover 17 or on the connection between the cover 17 and the protective container 1 on the container flange 13 and the cover flange 18 is to be sought.
  • a leak may also have occurred on the fittings of the protective container which are connected to the interior 3. If, on the other hand, the gas sample contains tritium, the leak is at the gas bottle 2 or at the bottle valve 16.
  • the measuring cell 20 with valve 21 and the shut-off valves 25 and 26 are attached to the cover 17 so that they are accessible from the outside.
  • these fittings surrounded by a housing 27 also attached to the cover 17, which can be covered with an end flange 28.
  • the gas bottle was filled with tritium up to half the atmospheric pressure.
  • a vacuum of 10 mbar was set in the interior 3.
  • the protective container has an externally operable device for actuating the cylinder valve 16 on the gas cylinder 2.
  • NPT National Pype Taper
  • the connecting flange 34 is fastened to the cover 17 in such a way that the mandrel 30 after the guide 29 has been fitted and after the NPT screw 33 has been removed can be placed directly on a valve spindle 35 of the cylinder valve 16 by means of the mandrel 30 r .
  • an intermediate space 36 which is formed between the guide 29 and the connecting flange 34 after their connection, is evacuated via a discharge line 37.
  • the discharge line 37 can be opened and closed by means of a valve 38 and can be connected via a pipe connection 39 to a pump device not shown in the drawing.
  • the guide 29 is designed to be vacuum-tight at the passage point for the mandrel 30.
  • the NPT screw 33 is loosened by means of the mandrel 30 and pushed into the interior 3.
  • the mandrel is then pressed further to the valve spindle 35 and placed so that the bottle valve 16 can be opened by rotating the mandrel 30 and valve spindle 35.
  • a vacuum-tight access to the bottle valve is thus provided for the mandrel 30.
  • the tritium flowing out into the interior 3 after opening the bottle valve can be pumped out and stored externally.
  • the guide 29 is placed on the connecting flange 34 only when the bottle valve 16 of the gas bottle 2 opens is required. In normal operation, the connecting flange 34 remains covered with a blind flange. The blind flange is not shown in the drawing.
  • the conical NPT screw 33 is inserted in the connecting flange 34 in such a way that the larger end face of the cone faces the interior 3. This arrangement facilitates the loosening of the NPT screw with the aid of the mandrel 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP19850114127 1984-11-07 1985-11-06 Bouteille à gaz pour tritium Expired EP0181602B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3440632A DE3440632C1 (de) 1984-11-07 1984-11-07 Gasflasche fuer Tritium
DE3440632 1984-11-07

Publications (2)

Publication Number Publication Date
EP0181602A1 true EP0181602A1 (fr) 1986-05-21
EP0181602B1 EP0181602B1 (fr) 1989-07-12

Family

ID=6249698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850114127 Expired EP0181602B1 (fr) 1984-11-07 1985-11-06 Bouteille à gaz pour tritium

Country Status (2)

Country Link
EP (1) EP0181602B1 (fr)
DE (1) DE3440632C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640353A1 (fr) * 1988-12-13 1990-06-15 Eferel Sa Dispositif de conditionnement de securite, notamment pour le transport, le stockage et la distribution de gaz

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113380435A (zh) * 2021-06-23 2021-09-10 中国核动力研究设计院 一种用于He-3气体回路的包容箱

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1292972B (de) * 1960-08-04 1969-04-17 Nicolai Walter Einrichtung zur Anzeige von Undichtheiten an Lagerbehaeltern fuer Fluessigkeiten oder Gase
DE1300745B (de) * 1960-08-04 1969-08-07 Nicolai Walter Einrichtung zur Anzeige von Undichtheiten an doppelwandigen Lagerbehaeltern fuer Fluessigkeiten oder Gase
FR2080192A5 (fr) * 1970-02-26 1971-11-12 Commissariat Energie Atomique
US4177863A (en) * 1975-02-18 1979-12-11 Sydney Simon Safety liquid dispenser

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2941859A1 (de) * 1979-10-16 1981-04-30 Linde Ag, 6200 Wiesbaden Verwendung von polytetrafluoraethylen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1292972B (de) * 1960-08-04 1969-04-17 Nicolai Walter Einrichtung zur Anzeige von Undichtheiten an Lagerbehaeltern fuer Fluessigkeiten oder Gase
DE1300745B (de) * 1960-08-04 1969-08-07 Nicolai Walter Einrichtung zur Anzeige von Undichtheiten an doppelwandigen Lagerbehaeltern fuer Fluessigkeiten oder Gase
FR2080192A5 (fr) * 1970-02-26 1971-11-12 Commissariat Energie Atomique
US4177863A (en) * 1975-02-18 1979-12-11 Sydney Simon Safety liquid dispenser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640353A1 (fr) * 1988-12-13 1990-06-15 Eferel Sa Dispositif de conditionnement de securite, notamment pour le transport, le stockage et la distribution de gaz

Also Published As

Publication number Publication date
EP0181602B1 (fr) 1989-07-12
DE3440632C1 (de) 1986-05-07

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