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Janner, K.; Gregorius, K.
Kraftwerk Union A.G., Berlin (Germany, F.R.)1982
Kraftwerk Union A.G., Berlin (Germany, F.R.)1982
AbstractAbstract
[en] A nozzle for adiabatically expanding a gas mixture in separating uranium isotopes and/or compounds of uranium isotopes is claimed. The slot-shaped nozzle is defined by two nozzle walls. These are symmetrically disposed on either side of a plane of symmetry passing through the nozzle. Insulation means which reduces heat transfer from the nozzle to a gas mixture passing through the nozzle is disposed adjacent sides of the nozzle walls remote from the nozzle
Primary Subject
Source
23 Dec 1982; vp; AU PATENT DOCUMENT 79/44144/B/; Copies available from the Commissioner of Patents, Canberra; Filed 12 Feb 1979, priority 13 Feb 1978 (2805958DE).
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Tybus, G.; Neuking, H.; Waldhoer, R.; Bichler, P.; Ebner, L.; Merges, V.; Bier, W.
Messerschmitt-Boelkow-Blohm G.m.b.H., Muenchen (Germany, F.R.); Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.)1983
Messerschmitt-Boelkow-Blohm G.m.b.H., Muenchen (Germany, F.R.); Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.)1983
AbstractAbstract
[en] The separating nozzle is designed so that the profile bars and the pipe body are tensioned by a leaf spring. The spring has a rolled edge which engages in a groove of the profile rods. This measure ensures that interference with gas flow in the area of the peeling shutters and nozzle lips is considerably reduced. This construction makes it easy to replace individual profile bars. Other modifications ensure that an even pressure is produced over the whole length of the profile bars. (PW)
[de]
Die Trennduese ist so konstruiert, dass die Profilstaebe und der Rohrkoerper mittels einer Blattfeder gegeneinander verspannt sind. Die Feder besitzt eine eingerollte Kante, die in eine Nut der Profilstaebe eingreift. Durch diese Massnahme wird erreicht, dass im Bereich der Abschaelblenden und Duesenlippen Stoerungen der Gasstroemung erheblich gemindert werden. Diese Bauart erlaubt es einzelne Profilstaebe leicht auszuwechseln. Andere Bauaenderungen dienen dazu, ueber die ganze Laenge der Profilstaebe einen moeglichst gleichfoermigen Anpressdruck zu erzeugen. (PW)Original Title
Trennduese zum Trennen von gas- oder dampffoermigen Stoffen mit unterschiedlichen Molekulargewichten und/oder verschiedenen gaskinetischen Querschnitten
Primary Subject
Source
26 May 1983; 10 Dec 1977; 4 p; DE PATENT DOCUMENT 2755140/C/; Available from Deutsches Patentamt, Muenchen (Germany, F.R.); ?: 10 Dec 1977
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Wodrich, G.W.; Heckh, G.; Zerweckh, M.
Siemens A.G., Berlin (F.R. Germany); Siemens A.G., Muenchen (F.R. Germany)1973
Siemens A.G., Berlin (F.R. Germany); Siemens A.G., Muenchen (F.R. Germany)1973
AbstractAbstract
No abstract available
Original Title
Schlitzduese zur Trennung gasfoermiger Isotopengemische
Primary Subject
Source
30 May 1973; 5 p; DE PATENT DOCUMENT 2009265/C/; 4 figs.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Grossstueck, W.
Weber (Klaus D.) K.G., Pforzheim (F.R. Germany)1973
Weber (Klaus D.) K.G., Pforzheim (F.R. Germany)1973
AbstractAbstract
No abstract available
Original Title
Verfahren zur Ausbildung der Duesenwaende von Trennduesen
Primary Subject
Source
1 Feb 1973; 3 p; DE PATENT DOCUMENT 1908693/B/; 6 figs.; 3 refs.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] X-ray lithography using synchrotron radiation has been applied in a multi-step process for the production of plastic moulds to be used in the fabrication of separation nozzles by electrodeposition. For characteristic dimensions of a few microns a total height of the nozzle structure of about 400 μm has been achieved. Structural details of about 0.1 μm are being reproduced across the total thickness of the polymer layer. The surface finish of metallic separation nozzles produced by electrodeposition was equivalent to the high quality of the polymer surface. The separation-nozzle systems fabricated by the described method allow an increase by a factor three of the gas pressure in separation-nozzle plants as compared to the present standard. This results in considerable savings in the enrichment of 235U for nuclear power production. (orig.)
Primary Subject
Source
Record Type
Journal Article
Journal
Naturwissenschaften; ISSN 0028-1042;
; v. 69(11); p. 520-523

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Fox, R.L.; Eaton, R.R.
Sandia Labs., Albuquerque, N.Mex. (USA)1976
Sandia Labs., Albuquerque, N.Mex. (USA)1976
AbstractAbstract
[en] The analysis presented is based on two methods of numerically determining flow parameters: finite-difference solution of the governing fluid dynamic equations, and Monte Carlo simulation. A set of fluid equations for ternary flow with disparate mass were derived from the kinetic equation assuming a 95 percent, 5 percent mixture of light molecules to heavy molecules. The finite-difference solution of these equations initially was obtained for a simple two-dimensional channel separator. A direct simulation method also was applied to the channel. Results of the two methods are presented. The extension of the direct simulation method to separation devices of practical size required the tracing of sample particle trajectories. The flow predicted by the sample particle method is compared with direct simulation results. Results obtained for systems of practical size and Knudsen number are presented for parametric variations of geometry and flow conditions
Primary Subject
Secondary Subject
Source
Dec 1976; 27 p; Available from NTIS. $4.00.
Record Type
Report
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Bley, P.; Ehrfeld, W.; Eisenbeiss, G.
Gesellschaft fuer Kernforschung m.b.H., Karlsruhe (F.R. Germany)1974
Gesellschaft fuer Kernforschung m.b.H., Karlsruhe (F.R. Germany)1974
AbstractAbstract
[en] The described procedure for the separation of gaseous and vaporous materials, particularly isotopes, with different molar weight and for different gasdynamic cross section operates with nozzles which are passed by the gas or gas mixture as an expanding jet. The jet is separated into fractional jets by means of a skimmer blade edge which is placed in its flow route. A following deflection makes the separation of the fractional jet possible. Additional expansion renders post-acceleration possible. The partial jets which are lead away outwards are combined in a cascade if their material composition is equivalent. The skimmer blade edge itself is constructed as a deflection wall with respect to the surface which is turned towards the fractional jet. The particular advantages of the process and the separation nozzle device are the enhanced separation factor together with the reduced operational costs. (RB)
[de]
Das beschriebene Verfahren zur Trennung von gas- oder dampffoermigen Stoffen, besonders Isotopen, mit unterschiedlichem Molekulargewicht und/oder verschiedenem gaskinetischen Querschnitt arbeitet mit Duesen, durch die das Gas oder Gasgemisch als expandierender Strahl hindurchstroemt. Durch eine in seinem Stroemungsweg angeordnete Schaelblende wird dieser in Teilstrahlen zerlegt. Durch anschliessende Umlenkung kann ein Teilstrahl einer weiteren Trennung zugefuehrt werden. Durch zusaetzliche Expansion kann eine Nachbeschleunigung erfolgen. In einer Kaskade werden die nach aussen abgefuehrten Teilstrahlen gleicher stofflicher Zusammensetzung vereinigt. Die Schaelblende selbst ist an der dem Teilstrahl zugewandten Oberflaeche zu einer Umlenkwand ausgebildet. Die besonderen Vorzuege des Verfahrens und der Duesentrenneinrichtung liegen in der Erhoehung des Trennfaktors und gleichzeitigen Verminderung des Betriebsaufwandes. (RB)Original Title
Verfahren und Vorrichtung zum Trennen von gas- oder dampffoermigen Stoffen, insbesondere Isotopen
Primary Subject
Source
4 Apr 1974; 10 p; DE PATENT DOCUMENT 2243730/S/; Available from ZAED; 1 fig. Available from ZAED.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Becker, E.; Ehrfeld, W.; Krieg, G.; Bier, W.
Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.)1984
Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.)1984
AbstractAbstract
[en] A method for producing a component of a separation element for separating a gaseous mixture into fractions is claimed. The element is composed of separating nozzle structures presenting passages defining mixture supply channels, separating chambers and fraction discharge channels. A negative mold of the component is formed by providing a plate of an electrically non-conductive material, whose ability to be removed from the plate is influenced by application of selected radiation. Portions of the plate are irradiated in a pattern corresponding to the passage presented by the nozzle structure to an extent such that material outside of the regions delimiting the passages is removable more easily than material within those regions. The plate of the electrically non-conductive material is mounted on a substrate of an electrically conductive material either before or after irradiation. Material is removed from the plate to create the negative mold of the component. The openings are electrochemically filled with a metal to create a sold plate-shaped member and the negative mold is removed
Primary Subject
Source
31 May 1984; 2 Jun 1979; vp; AU PATENT DOCUMENT 80/58960/B/; DE PRIORITY 2922642; Available from Patent Office, P.O. Box 200, Woden, A.C.T; Priority date: 2 Jun 1979
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The separation nozzles used for the enrichment of gaseous isotopes, above all UF6, consist of foil packets, which are pressed together by cover plates. These packets are supported in separation pipes. The invention deals with an improved design of the cover plates and the holding pipe, which makes possible a cheaper production and an improvement of the plant compactness. Drawings and a detailed description explain the patent application. (UWI)
[de]
Die fuer die Anreicherung von gasfoermigen Isotopen, insbesondere UF6, eingesetzten Trennduesen bestehen aus Paketen von Folien, die von Deckplatten zusammengepresst werden. Diese Pakete werden in Trennrohren gehaltert. Die Erfindung betrifft die verbesserte Ausgestaltung von Deckplatten und Halterungsrohr, die eine billigere Herstellung ermoeglichen soll und durch die auch die Dichtigkeit der Anlage verbessert wird. Drei Zeichnungen und eine detaillierte Beschreibung erlaeutern den Vorschlag. (UWI)Original Title
Trennrohre zur Halterung von Trennduesen
Primary Subject
Source
20 Oct 1977; 10 p; DE PATENT DOCUMENT 2615028/A/
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Grossstuck, W.
Nustep Trennduesen Entwicklungs- und Patentverwertungsgesellschaft m.b.H. und Co. K.G., Essen (Germany, F.R.)1984
Nustep Trennduesen Entwicklungs- und Patentverwertungsgesellschaft m.b.H. und Co. K.G., Essen (Germany, F.R.)1984
AbstractAbstract
[en] The present invention relates to an improved apparatus for the separation of a fluid mixture, particularly an isotope mixture, into fractions by difference in mass. Apparatus for the separation nozzle method is described. The advantages of the system derive from the fact that the separating elements can be formed as a one-piece unit for each station or at most from two plates for each station, with especially high precision by electrodeposition techniques. They can be emplaced in the seats machined with equally high precision in the cast passage-forming body so that all of the tolerances can be preestablished in the separating element or by the precision of the machining of the fitting surfaces
Primary Subject
Source
23 Feb 1984; 30 Jan 1980; vp; AU PATENT DOCUMENT 81/66707/B/; DE PRIORITY 3003202; Available from Patent Office, P.O. Box 200, Woden, A.C.T; Priority date: 30 Jan 1980
Record Type
Patent
Country of publication
ACTINIDE COMPOUNDS, ACTINIDE NUCLEI, ALPHA DECAY RADIOISOTOPES, DEPOSITION, ELECTROLYSIS, EVEN-ODD NUCLEI, FLUORIDES, FLUORINE COMPOUNDS, HALIDES, HALOGEN COMPOUNDS, HEAVY NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPE SEPARATION, ISOTOPES, MINUTES LIVING RADIOISOTOPES, NUCLEI, RADIOISOTOPES, SEPARATION PROCESSES, SURFACE COATING, URANIUM COMPOUNDS, URANIUM FLUORIDES, URANIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
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