US3654472A - Apparatus for selectively examining radioactive samples - Google Patents

Apparatus for selectively examining radioactive samples Download PDF

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Publication number
US3654472A
US3654472A US756998A US3654472DA US3654472A US 3654472 A US3654472 A US 3654472A US 756998 A US756998 A US 756998A US 3654472D A US3654472D A US 3654472DA US 3654472 A US3654472 A US 3654472A
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US
United States
Prior art keywords
holder
holders
detector
carriers
transfer assembly
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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 - Lifetime
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US756998A
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English (en)
Inventor
Jan Sjouke Hof
Gerardus Otten
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US Philips Corp
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US Philips Corp
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Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3654472A publication Critical patent/US3654472A/en
Anticipated expiration legal-status Critical
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    • 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
    • G21F7/00—Shielded cells or rooms
    • G21F7/06—Structural combination with remotely-controlled apparatus, e.g. with manipulators
    • G21F7/067—Transferring devices within cells or boxes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/08—Means for conveying samples received

Definitions

  • the invention relates to a composition changer for examining radioactive compositions which are present in containers and may be mixed with a scintillator liquid.
  • the changer is provided with a plurality of parallel arranged holders which are each designed to hold a group of containers containing the compositions to be examined, means to remove a container from the holder, to bring said container in a shielded detector chamber, to examine it, and to remove it again from said chamber.
  • a group of containers is accomodated in apertures along a circular periphery of a round disc.
  • This disc forms a magazine for the containers which may be designed as small bottles.
  • a plurality of said discs is fixedly arranged above one another and every time one disc is completely moved out of the stack and conveyed up to exactly above a detector chamber; by rotating the disc about its center a different container is led every time above the chamber and introduced therein. After examination the container is placed again in the disc which is conveyed back to the stack.
  • the known device is suitable for a very large number of containers, it has the drawback ofbeing comparatively voluminous; because the containers are only arranged along a circular periphery.
  • a disc having a large diameter is already required for proportionally few containers.
  • Furthermore a complicated mechanism is required for the intricate transport path leading the disc from the stack to the measuring arrangement.
  • An object of the invention is to provide a changer in which the transport path for the containers is considerably simplified and shortened and which can accommodate a great many containers in a proportionally small volume.
  • the changer according to the invention is characterized in that the holders are oblong and are each designed to accommodate the containers in one or more parallel straight rows, the holders being movable in parallel with one another, in a path tranversely to their longitudinal dimension and closed in itself.
  • a composition changer has means for moving a holder preferably stepwise in its longitudinal direction when said holder has assumed a pre-determined position in the path. This provides the interesting possibility to accommodate the holders movably in gutter-like trays which are open at at least one end, said holders having a plurality of bottomless apertures for receiving the containers and extending in a vertical direction up to the bottoms of the trays.
  • the containers which are, for example, formed as sample bottles, then fit in the bottomless apertures of the holder which rests on the bottom of the trough-like tray in unextended position; not until the holder is slid out of the tray can the containers be conveyed in downward direction to a measuring chamber.
  • FIG. 1 is a perspective elevational view of the changer according to the invention
  • FIG. 2 relates to transporting holders containing sample bottles to be tested, along a path by means of a transport chain
  • FIG. 3 is part of a vertical cross-section taken on the line llllll of FIG. 1, and
  • FIG. 4 is a perspective view of a transport tray having an extensible holder for samples to be tested.
  • the composition changer of FIG. 1 has two transport chains 1 and 3 which are synchronously moved by the same shaft 4 and between which a plurality of transport trays for sample bottles are suspended in brackets in the manner as for an endless conveyer.
  • FIG. 2 shows the chain 3 in part and brackets 5, 7, which have a common pivot at 9 secured to the links of these chains.
  • the brackets 5, 7 are shown as two lines in FIG. 1. Trough-like trays 19 for holding sample bottles to be tested .are suspended between corresponding sets of brackets of the two chains.
  • carrier plates 11 secured to the brackets 5, 7 which carrier plates have bent edges 13 between which the trays 19 with their flanged edges 15 and 17 can slide.
  • Each series of parallel arranged trays 19, which are open at one end, is furthermore designed to comprise a holder 21 ofa synthetic material which can be slid out of the tray 19 in the longitudinal direction as is shown in FIG. 4.
  • the holder 21 is provided with bottomless apertures 23 in which containers holding the compositions to be examined are held in place.
  • the containers are designed as small bottles 25 which are supported by the bottom of the tray '19 as long as the holder still completely remains in the tray.
  • the holders 21 are successively slid out of the trays 19 in stepwise manner.
  • the holder 21 is slid out of the tray 19 in the longitudinal direction with the aid of a lug 29 which is moved stepwise in the direction indicated by arrow 27 and co-acts with a hook-like part 31 of the holder 21.
  • the lug 29 In unextended position the lug 29 is located at the extreme right.
  • the hook-like part 31 is arranged behind the lug 29 in said extreme right position by moving the tray 19 in the direction transversely to the plane of the drawing whereby the part 31 slides over the lug 29.
  • An index mechanism of conventional construction may serve to move on the lug 29.
  • a detector chamber formed by lead walls 37 and accommodating detection means 39, 41 is located underneath the chain conveyer.
  • a plunger 43 can be displaced in the direction of height in an aperture 48 of this chamber; it is driven by a shaft 45 which causes the pin 47 inserted in plunger 43 to move up and down through a suitable gear.
  • the plunger 43 In its highest position the plunger 43 can receive a bottle 51 from the holder 21, and hold it between the detectors 39 and 41 in its lowest position at which the measurement for radioactivity takes place in conventional manner.
  • the bushing 50 then provides for additional shielding of the light when the plunger 43 is in its upper position. As the plunger moves down the bushing is also taken along downwards by shoulder 52.
  • a shield 55 rotatable by shaft 53 and having apertures the shield passes a bottle 51 in one position and covers the space above the lowered bottle 51 in light-tight manner at one position farther.
  • measurement shield 55 is further rotated until another aperture is released in the path of the plunger, and the bottle 51 can be lifted again into the holder 21.
  • the upper side 59 of the plunger 43 is in the broken-line position and forms a temporary base for the bottle 51, the holder 21 is displaced over a desired distance and another bottle can be lowered.
  • the lug 29 is again moved to the extreme right and the holder 21 is thus returned to its original position. Subsequently the chains 1, 3 are moved slightly further so that the second row of bottles of the same holder 21 can be slid out.
  • the composition changer furthermore comprises an electronic control section with which a desired program of operations, such as transporting, measuring, recording, can be carried out.
  • This section can be seen in the right part of FIG. 1 and comprises a plurality of control and measuring units placed upon one another. Since these units do not form an essential part of the present invention their description has been omitted.
  • Apparatus for retaining a plurality of sample containers of radioactive material and transporting one at a time to a detector for examination comprising:
  • a plurality of holders each (i) having a plurality of apertures along a longitudinal axis for retaining sample containers, and (ii) secured to and axially movable relative to one carrier,
  • a transfer assembly for maintaining the carriers and holders spaced and parallel with respect to other carriers and holders, and for transporting the carriers and holders along a continuous generally elongated path having closely adjacent sides, with the carriers and holders on said sides of the path being correspondingly adjacent, the path also defining a discharge area to which each holder is transported,
  • a shielded detector including an aperture for receiving one sample container at a time
  • the transfer assembly further comprising means cooperating with each holder at the discharge area, for selectively moving each holder axially with respect to its carrier and a selected container to a discharge point for transport from the holder to said detector for examination thereof, and returning the container to its holder.
  • said transfer assembly further comprises flexible guide means disposed along said path and motor means driving the assembly for transporting the carriers and holders.
  • said frame further includes a closable duct between the discharge area and the detector, and said transfer assembly opens the duct before transporting each container via the duct to the detector, and subsequently closes the duct.

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  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Measurement Of Radiation (AREA)
US756998A 1967-09-02 1968-09-03 Apparatus for selectively examining radioactive samples Expired - Lifetime US3654472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6712087A NL6712087A (enrdf_load_stackoverflow) 1967-09-02 1967-09-02

Publications (1)

Publication Number Publication Date
US3654472A true US3654472A (en) 1972-04-04

Family

ID=19801104

Family Applications (1)

Application Number Title Priority Date Filing Date
US756998A Expired - Lifetime US3654472A (en) 1967-09-02 1968-09-03 Apparatus for selectively examining radioactive samples

Country Status (6)

Country Link
US (1) US3654472A (enrdf_load_stackoverflow)
BE (1) BE720331A (enrdf_load_stackoverflow)
DE (1) DE1764904A1 (enrdf_load_stackoverflow)
FR (1) FR1581271A (enrdf_load_stackoverflow)
GB (1) GB1238906A (enrdf_load_stackoverflow)
NL (1) NL6712087A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855473A (en) * 1972-07-21 1974-12-17 Searle & Co Radioactivity measuring device with a movable detector head
FR2307278A1 (fr) * 1975-04-11 1976-11-05 Lohr Wilhelm Appareil pour la mesure du rayonnement nucleaire d'une serie d'echantillons radioactifs
US4001585A (en) * 1974-07-05 1977-01-04 Intertechnique S.A. Sample conveyors
FR2357844A1 (fr) * 1975-12-02 1978-02-03 Interatom Dispositif pour echanger des creusets dans un four de chauffage a l'incandescence
FR2686330A1 (fr) * 1992-01-16 1993-07-23 Unimetall Sa Moyen de levage pour la manutention par lots des ferrailles consommees dans une acierie.
US5416329A (en) * 1990-05-08 1995-05-16 Wallac Oy Apparatus for counting liquid scintillation samples
LU90270B1 (en) * 1998-08-05 2000-02-07 Europ Economic Community Sample changer for transferring radioactive samples between a hot cell and a measuring apparatus
US20110098656A1 (en) * 2005-09-27 2011-04-28 Burnell Rosie L Auto-injection device with needle protecting cap having outer and inner sleeves
CN104359790A (zh) * 2014-11-06 2015-02-18 中国原子能科学研究院 一种用于k边界密度计的换样装置
US20160245935A1 (en) * 2013-10-09 2016-08-25 Hitachi, Ltd. Sample measuring device
US20160252634A1 (en) * 2013-10-09 2016-09-01 Hitachi, Ltd. Sample measuring device
WO2020103488A1 (zh) * 2018-11-19 2020-05-28 苏州瑞派宁科技有限公司 一种闪烁晶体测试装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128930A1 (de) * 1981-07-22 1983-02-10 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe "probenflaschenwechsler"

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932263A (en) * 1955-12-03 1960-04-12 Leuthauser Gustav Multi-floor baking oven with movable supports for the goods to be baked
US3257561A (en) * 1963-04-15 1966-06-21 Packard Instrument Co Inc Radioactivity level detecting apparatus for samples carried by portable trays with transfer and indexing means for the trays
US3422268A (en) * 1965-01-05 1969-01-14 Karl Heinz Meinig Radiation detecting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932263A (en) * 1955-12-03 1960-04-12 Leuthauser Gustav Multi-floor baking oven with movable supports for the goods to be baked
US3257561A (en) * 1963-04-15 1966-06-21 Packard Instrument Co Inc Radioactivity level detecting apparatus for samples carried by portable trays with transfer and indexing means for the trays
US3422268A (en) * 1965-01-05 1969-01-14 Karl Heinz Meinig Radiation detecting device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855473A (en) * 1972-07-21 1974-12-17 Searle & Co Radioactivity measuring device with a movable detector head
US4001585A (en) * 1974-07-05 1977-01-04 Intertechnique S.A. Sample conveyors
FR2307278A1 (fr) * 1975-04-11 1976-11-05 Lohr Wilhelm Appareil pour la mesure du rayonnement nucleaire d'une serie d'echantillons radioactifs
FR2357844A1 (fr) * 1975-12-02 1978-02-03 Interatom Dispositif pour echanger des creusets dans un four de chauffage a l'incandescence
US5416329A (en) * 1990-05-08 1995-05-16 Wallac Oy Apparatus for counting liquid scintillation samples
FR2686330A1 (fr) * 1992-01-16 1993-07-23 Unimetall Sa Moyen de levage pour la manutention par lots des ferrailles consommees dans une acierie.
US6630679B1 (en) 1998-08-05 2003-10-07 European Community Sample changer for transferring radioactive samples between a hot cell and a measuring apparatus
WO2000008450A1 (en) * 1998-08-05 2000-02-17 European Community Sample changer for transferring radioactive samples between a hot cell and a measuring apparatus
LU90270B1 (en) * 1998-08-05 2000-02-07 Europ Economic Community Sample changer for transferring radioactive samples between a hot cell and a measuring apparatus
US20110098656A1 (en) * 2005-09-27 2011-04-28 Burnell Rosie L Auto-injection device with needle protecting cap having outer and inner sleeves
US20160245935A1 (en) * 2013-10-09 2016-08-25 Hitachi, Ltd. Sample measuring device
US20160252634A1 (en) * 2013-10-09 2016-09-01 Hitachi, Ltd. Sample measuring device
US9791577B2 (en) * 2013-10-09 2017-10-17 Hitachi, Ltd. Sample measuring device
US9903965B2 (en) * 2013-10-09 2018-02-27 Hitachi, Ltd. Sample measuring device
CN104359790A (zh) * 2014-11-06 2015-02-18 中国原子能科学研究院 一种用于k边界密度计的换样装置
WO2020103488A1 (zh) * 2018-11-19 2020-05-28 苏州瑞派宁科技有限公司 一种闪烁晶体测试装置

Also Published As

Publication number Publication date
NL6712087A (enrdf_load_stackoverflow) 1969-03-04
BE720331A (enrdf_load_stackoverflow) 1969-03-03
DE1764904A1 (de) 1972-04-20
FR1581271A (enrdf_load_stackoverflow) 1969-09-12
GB1238906A (enrdf_load_stackoverflow) 1971-07-14

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