EP1477991B1 - Radiation screening cabin for an X-ray apparatus - Google Patents

Radiation screening cabin for an X-ray apparatus Download PDF

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Publication number
EP1477991B1
EP1477991B1 EP03090439A EP03090439A EP1477991B1 EP 1477991 B1 EP1477991 B1 EP 1477991B1 EP 03090439 A EP03090439 A EP 03090439A EP 03090439 A EP03090439 A EP 03090439A EP 1477991 B1 EP1477991 B1 EP 1477991B1
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EP
European Patent Office
Prior art keywords
radiation protection
protection cabin
profile elements
elements
wall panel
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 - Lifetime
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EP03090439A
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German (de)
French (fr)
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EP1477991A1 (en
Inventor
Michael Wüstenbecker
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Baker Hughes Digital Solutions GmbH
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GE Inspection Technologies GmbH
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Priority claimed from DE2003121434 external-priority patent/DE10321434A1/en
Application filed by GE Inspection Technologies GmbH filed Critical GE Inspection Technologies GmbH
Priority to EP03090439A priority Critical patent/EP1477991B1/en
Publication of EP1477991A1 publication Critical patent/EP1477991A1/en
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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
    • 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
    • G21F3/00—Shielding characterised by its physical form, e.g. granules, or shape of the material

Definitions

  • the invention relates to a radiation protection cabin for an X-ray device for non-destructive testing of test parts according to the preamble of claim 1.
  • An X-ray device for non-destructive testing of test parts, for example castings, by means of X-radiation is arranged inside a radiation protection cabin and is operated when the cabin is closed.
  • the walls of the cabin are essentially formed by wall panel elements with a lead layer.
  • the wall panel elements are usually supported by profile tubes. At the junctions between the wall elements arise shielding gaps between the lead layers of the wall panel elements.
  • lead-containing strips and corner pieces are attached to the junctions of the wall panel elements, for example on the outside. This is expensive and leads to undesirable protruding parts on the outer walls of the radiation protection cabin.
  • FR 2 443 121 A US 4 514 640 .
  • EP 0 762 433 A and FR 1 441 764 disclose radiation protection cabins according to the preamble of claim 1, wherein the shielding is achieved by special radiation protection materials, in particular lead elements.
  • GB 1 276 165 discloses a film holder for a dental X-ray device comprising steel sheet shields.
  • the object of the invention is to provide a radiation protection cabin, in which the production cost is reduced, without the radiation protection function is impaired.
  • the invention solves this problem with the means of claim 1.
  • the invention uses already existing at the junctions of the wall panel elements existing profile elements for radiation attenuation.
  • the X-rays are attenuated over the entire cross section of the solid profile elements and not as conventional only in the tube walls.
  • the emission of X-radiation between the lead layers of the wall plate elements can therefore be substantially completely prevented.
  • Additional shielding elements, in particular lead elements, in the region of the connection points of the wall panel elements of the radiation protection cabin can therefore be dispensed with according to the invention.
  • This reduces the production costs of the radiation protection cabin.
  • a weight reduction of the radiation protection cabin can be achieved.
  • By means of internal profile elements can be avoided on the outer walls of the radiation protection cabin protruding parts, so that substantially flat outer walls can be achieved.
  • the profile elements according to the invention made of steel have high load capacity and high radiation absorption at low cost.
  • the dimensioning of the profile elements is sufficient to ensure radiation protection for conventional X-ray inspection systems.
  • Ensuring radiation protection means that in the operation of the X-ray device no or at most negligible X-ray radiation, which is generally defined by limit values, escapes from the radiation protection cabin.
  • the diameter of the profile elements is therefore at least 20 mm, preferably at least 25 mm, more preferably at least 30 mm.
  • the X-ray absorption of the profile elements is at least about that of conventionally used lead layers, i. preferably at least 2 mm, preferably at least 2.5 mm lead.
  • the use of the invention for X-ray devices with more than 200 W, preferably more than 400 W, is particularly advantageous, since the use of additional lead-containing shields in conventional radiation protection booths is indispensable for these energies or performances.
  • the invention is applicable to all wall panel elements supporting, connecting and / or limiting profile elements. This concerns at least profile elements on the vertical edges of the radiation protection cabin, preferably also profile elements on the horizontal edges of the radiation protection cabin. Preferably, also arranged between the edges of the radiation protection cabin profile elements are solid.
  • the invention preferably also relates to profile elements which delimit an opening of the radiation protection cabin, in particular as part of a frame. This may, for example, be a door opening in walk-through radiation protection booths or openings for transporting test parts through the radiation protection cabin.
  • the wall panel elements have fastening means projecting over the surface thereof for securing the wall panel elements to the profile elements.
  • the attachment point can be spaced from the wall panel elements and the lead layer contained therein. This is particularly advantageous in a welded joint, since the increased distance between the weld and the lead layer heating of the lead can be significantly reduced. A heating of the lead could lead to a reduction in the lead strength due to the bleeding of the lead and thus to an impairment of the radiation protection.
  • the claim 10 directed to the fasteners may be self-contained, i. claimed in a back-only on the preamble of claim 1 form. The object of such a claim is to provide a radiation protection cabin with improved radiation safety, in particular an impairment of the radiation protection in the area of welds between the Wandplatten- and profile elements is avoided.
  • the fastening means are formed from an already existing part of the wall panel elements, in particular a cladding, for example, by folding sheet metal tabs from the cladding, which reduces the production cost.
  • the fasteners are applicable to all connections between profile elements and wall panel elements.
  • the radiation protection cabin 10 is an in Fig. 1 schematically indicated holding device 30 arranged for a test part.
  • an X-ray manipulator 32 is attached to holding means 31.
  • the side walls 11-14 of the radiation protection cabin 10 are essentially formed by a plurality of wall panel elements 15.
  • the bottom wall and the ceiling wall of the radiation protection cabin 10, not shown, are expediently likewise formed by wall panel elements 16.
  • the walls of the radiation protection cabin 10 include the side walls 11-14, the bottom wall and the ceiling wall.
  • the following explanations essentially relate to the side walls 11-14; However, the ceiling wall and / or the bottom wall of the radiation protection cabin 10 preferably also have the preferred features explained on the basis of the side walls.
  • the wall panel elements 15 are attached to profile elements 20-25 and are supported by them. However, not all profile elements 20-25 have a supporting function. Profile elements 20-24 are provided in particular at the connection points between the wall plate elements 15, 16. In particular, profile elements 20 are provided on the vertical edges of the radiation protection cabin 10, preferably furthermore profile elements 21 between the vertical edges, profile elements 24 on the horizontal edges and / or profile elements 22 between the horizontal edges of the radiation protection cabin 10. On the side wall 11 also not shown profile elements between the vertical edges for connecting the side wall 11 forming wall panel elements may be provided.
  • the wall panel elements 15 have an outer panel 17, for example made of sheet metal, an inner panel 18, for example made of sheet metal and a shielding layer 19, in particular made of lead. At the junctions between the wall panel elements 15, shield gaps between the lead layers 19 occur, as best in Fig. 2 recognizable. In the case of conventional radiation protection cabins, strips, edge strips or corner parts for covering these shielding gaps are therefore attached externally to the radiation protection cabin.
  • the profile elements 20-24 are solid, ie they consist essentially over their entire cross-section of solid material, preferably steel, and are designed in particular cavity-free. X-radiation, which is directed to the joints between the wall panel elements 15, therefore, passes through the full cross section of the profile elements 20-24 and is substantially completely absorbed therein. Additional lead-containing shielding elements are not required.
  • the walk-through radiation protection cabin 10 has a door opening 26 for operating personnel.
  • the door opening 26 is closed during operation of the X-ray device 30 by a door 27 which contains a lead layer 28.
  • the door 27 can from the in the Fig. 1 . 3 shown closed position in the arrow direction by means not shown guides are moved to an open position.
  • the frame of the door opening 26 comprises profile elements 25 as frame parts.
  • the door 27 comprises profile parts 29 which are preferably arranged on the side of the door 27 pointing into the interior of the radiation protection cabin 10.
  • the profile elements 25, 29 are solid and preferably made of steel and engage in the closed state of the door 27 preferably into each other, so that directed to the shield gap between the door 27 and adjacent wall panel elements 15 X-ray radiation is effectively shielded. Additional lead-containing shields, such as conventional angle-shaped, in the closed state of the door engaging behind each other lead elements on the door and the door frame are therefore not required.
  • the x-ray device 30 is preferably operated with an x-ray tube in the range of 60-200 kV, for example 160 kV, with a tube power in the range of 300-3000 W, for example 640 W.
  • the diameter of the profile elements 20-24 is preferably at least 25 mm, for example about 35 mm, which corresponds to the absorption of about 2 to 2.5 mm of lead.
  • the diameter denotes the smallest cross-sectional diameter, for square cross-section than, for example, the square edge length.
  • the wall panel elements 15, 16 can be fastened by means of welded connections 41 to the corresponding profile elements 20-25.
  • cutouts 42 are provided in the sheet metal covering 18 of a wall plate element 15, as seen from Fig. 4, 5 seen.
  • the sheet metal panel 18 is folded in the form of a tab 40.
  • the tab 40 is in the example of Fig. 4, 5 bent into the interior of the radiation protection cabin 10.
  • the welded connection 41 is arranged on the free outer edge 43 of the tab 40. How out Fig. 4 can be seen, the weld 41 due to the tab 40 a much greater distance from the lead layer 19 of the wall plate member 15, as if the tab 40 would not be present.
  • the heating of the lead layer 19 during welding of the welded joint 41 is thereby reduced to the extent that a disadvantageous bleeding of the lead layer 19 in the region of the joint is avoided and a substantially uniform thickness of the lead layer 19 is ensured.

Description

Die Erfindung betrifft eine Strahlenschutzkabine für eine Röntgenvorrichtung zur zerstörungsfreien Prüfung von Prüfteilen nach dem Oberbegriff von Anspruch 1.The invention relates to a radiation protection cabin for an X-ray device for non-destructive testing of test parts according to the preamble of claim 1.

Eine Röntgenvorrichtung zur zerstörungsfreien Prüfung von Prüfteilen, beispielsweise Gussteilen, mittels Röntgenstrahlung ist im Innern einer Strahlenschutzkabine angeordnet und wird bei geschlossener Kabine betrieben. Die Wände der Kabine werden im Wesentlichen von Wandplattenelementen mit einer Bleilage gebildet. Die Wandplattenelemente werden üblicherweise von Profilrohren getragen. An den Verbindungsstellen zwischen den Wandelementen entstehen Abschirmungslücken zwischen den Bleilagen der Wandplattenelemente. Um das Entweichen von Strahlung zu verhindern, werden an den Verbindungsstellen der Wandplattenelemente, beispielsweise außen, bleihaltige Leisten und Eckteile angebracht. Dies ist aufwendig und führt zu unerwünschten hervorstehenden Teilen an den Außenwänden der Strahlenschutzkabine.An X-ray device for non-destructive testing of test parts, for example castings, by means of X-radiation is arranged inside a radiation protection cabin and is operated when the cabin is closed. The walls of the cabin are essentially formed by wall panel elements with a lead layer. The wall panel elements are usually supported by profile tubes. At the junctions between the wall elements arise shielding gaps between the lead layers of the wall panel elements. In order to prevent the escape of radiation, lead-containing strips and corner pieces are attached to the junctions of the wall panel elements, for example on the outside. This is expensive and leads to undesirable protruding parts on the outer walls of the radiation protection cabin.

FR 2 443 121 A , US 4 514 640 , EP 0 762 433 A und FR 1 441 764 offenbaren Strahlenschutzkabinen nach dem Oberbegriff von Anspruch 1, wobei die Abschirmung durch spezielle Strahlenschutzmaterialien, insbesondere Bleielemente erreicht wird. FR 2 443 121 A . US 4 514 640 . EP 0 762 433 A and FR 1 441 764 disclose radiation protection cabins according to the preamble of claim 1, wherein the shielding is achieved by special radiation protection materials, in particular lead elements.

GB 1 276 165 offenbart einen Filmhalter für eine dentalmedizinische Röntgenvorrichtung, der Abschirmbleche aus Stahlblech aufweist. GB 1 276 165 discloses a film holder for a dental X-ray device comprising steel sheet shields.

US 2 838 592 , US 5 043 529 und US 4 817 337 offenbaren Faradaysche Käfige. US 2,838,592 . US 5 043 529 and US 4,817,337 reveal Faraday cages.

Die Aufgabe der Erfindung besteht darin, eine Strahlenschutzkabine bereitzustellen, bei der der Herstellungsaufwand reduziert ist, ohne dass die Strahlenschutzfunktion beeinträchtigt wird.The object of the invention is to provide a radiation protection cabin, in which the production cost is reduced, without the radiation protection function is impaired.

Die Erfindung löst diese Aufgabe mit den Mitteln des Anspruchs 1. Die Erfindung nutzt ohnehin an den Verbindungsstellen der Wandplattenelemente vorhandene Profilelemente zur Strahlungsabschwächung. Die Röntgenstrahlen werden über den gesamten Querschnitt der massiven Profilelemente abgeschwächt und nicht wie herkömmlich nur in den Rohrwänden. Das Austreten von Röntgenstrahlung zwischen den Bleilagen der Wandplattenelemente kann daher im Wesentlichen vollständig verhindert werden. Auf zusätzliche Abschirmungselemente, insbesondere Bleielemente, im Bereich der Verbindungsstellen der Wandplattenelemente der Strahlenschutzkabine kann daher erfindungsgemäß verzichtet werden. Dies verringert den Herstellungsaufwand der Strahlenschutzkabine. Gegebenenfalls kann eine Gewichtsreduzierung der Strahlenschutzkabine erreicht werden. Mittels innenliegender Profilelemente können über die Außenwände der Strahlenschutzkabine hervorstehende Teile vermieden werden, so dass im Wesentlichen ebene Außenwände erreicht werden können. Die erfindungsgemäßen Profilelemente aus Stahl verfügen über hohe Tragfähigkeit und hohe Strahlungsabsorption bei geringen Kosten.The invention solves this problem with the means of claim 1. The invention uses already existing at the junctions of the wall panel elements existing profile elements for radiation attenuation. The X-rays are attenuated over the entire cross section of the solid profile elements and not as conventional only in the tube walls. The emission of X-radiation between the lead layers of the wall plate elements can therefore be substantially completely prevented. Additional shielding elements, in particular lead elements, in the region of the connection points of the wall panel elements of the radiation protection cabin can therefore be dispensed with according to the invention. This reduces the production costs of the radiation protection cabin. Optionally, a weight reduction of the radiation protection cabin can be achieved. By means of internal profile elements can be avoided on the outer walls of the radiation protection cabin protruding parts, so that substantially flat outer walls can be achieved. The profile elements according to the invention made of steel have high load capacity and high radiation absorption at low cost.

Zweckmäßigerweise ist die Dimensionierung der Profilelemente ausreichend, um Strahlenschutz für übliche Röntgenprüfsysteme zu gewährleisten. Gewährleistung von Strahlenschutz bedeutet, dass im Betrieb der Röntgenvorrichtung keine oder allenfalls vernachlässigbar wenig Röntgenstrahlung, die in der Regel durch Grenzwerte definiert wird, aus der Strahlenschutzkabine entweicht. Erfindungsgemäß beträgt der Durchmesser der Profilelemente daher mindestens 20 mm, vorzugsweise mindestens 25 mm, weiter vorzugsweise mindestens 30 mm. Vorzugsweise entspricht die Röntgenabsorption der Profilelemente mindestens etwa derjenigen von herkömmlich verwendeten Bleilagen, d.h. vorzugsweise von mindestens 2 mm, vorzugsweise mindestens 2.5 mm Blei. Besonders vorteilhaft ist der Einsatz der Erfindung für Röntgenvorrichtungen mit mehr als 200 W, vorzugsweise mehr als 400 W, da bei diesen Energien bzw. Leistungen der Einsatz von zusätzlichen bleihaltigen Abschirmungen in herkömmlichen Strahlenschutzkabinen unverzichtbar ist.Appropriately, the dimensioning of the profile elements is sufficient to ensure radiation protection for conventional X-ray inspection systems. Ensuring radiation protection means that in the operation of the X-ray device no or at most negligible X-ray radiation, which is generally defined by limit values, escapes from the radiation protection cabin. According to the invention, the diameter of the profile elements is therefore at least 20 mm, preferably at least 25 mm, more preferably at least 30 mm. Preferably, the X-ray absorption of the profile elements is at least about that of conventionally used lead layers, i. preferably at least 2 mm, preferably at least 2.5 mm lead. The use of the invention for X-ray devices with more than 200 W, preferably more than 400 W, is particularly advantageous, since the use of additional lead-containing shields in conventional radiation protection booths is indispensable for these energies or performances.

Die Erfindung ist auf sämtliche Wandplattenelemente tragende, verbindende und/oder begrenzende Profilelemente anwendbar. Dies betrifft mindestens Profilelemente an den Vertikalkanten der Strahlenschutzkabine, vorzugsweise auch Profilelemente an den Horizontalkanten der Strahlenschutzkabine. Vorzugsweise sind ebenfalls zwischen den Kanten der Strahlenschutzkabine angeordnete Profilelemente massiv ausgebildet. Die Erfindung betrifft vorzugsweise ebenfalls Profilelemente, die eine Öffnung der Strahlenschutzkabine insbesondere als Teil eines Rahmens begrenzen. Dabei kann es sich beispielsweise um eine Türöffnung bei begehbaren Strahlenschutzkabinen oder um Öffnungen zum Transportieren von Prüfteilen durch die Strahlenschutzkabine handeln.The invention is applicable to all wall panel elements supporting, connecting and / or limiting profile elements. This concerns at least profile elements on the vertical edges of the radiation protection cabin, preferably also profile elements on the horizontal edges of the radiation protection cabin. Preferably, also arranged between the edges of the radiation protection cabin profile elements are solid. The invention preferably also relates to profile elements which delimit an opening of the radiation protection cabin, in particular as part of a frame. This may, for example, be a door opening in walk-through radiation protection booths or openings for transporting test parts through the radiation protection cabin.

Bei einer bevorzugten Ausführungsform weisen die Wandplattenelemente über deren Oberfläche hervorstehende Befestigungsmittel zum Befestigen der Wandplattenelemente an den Profilelementen auf. Mittels der hervorstehenden Befestigungsmittel kann die Befestigungsstelle von den Wandplattenelementen und der darin enthaltenen Bleilage beabstandet werden. Dies ist insbesondere bei einer Schweißverbindung vorteilhaft, da durch den vergrößerten Abstand zwischen der Schweißstelle und der Bleilage eine Erhitzung des Bleis erheblich verringert werden kann. Eine Erhitzung des Bleis könnte zur Verringerung der Bleistärke durch Verlaufen des Bleis und damit zur Beeinträchtigung des Strahlenschutzes führen. Der auf die Befestigungsmittel gerichtete Anspruch 10 ist gegebenenfalls eigenständig, d.h. in einer nur auf den Oberbegriff des Anspruchs 1 rückbezogenen Form beanspruchbar. Die Aufgabe eines solchen Anspruchs besteht darin, eine Strahlenschutzkabine mit verbesserter Strahlenschutzsicherheit bereitzustellen, bei der insbesondere eine Beeinträchtigung des Strahlenschutzes im Bereich von Schweißstellen zwischen den Wandplatten- und Profilelementen vermieden wird.In a preferred embodiment, the wall panel elements have fastening means projecting over the surface thereof for securing the wall panel elements to the profile elements. By means of the protruding fastening means, the attachment point can be spaced from the wall panel elements and the lead layer contained therein. This is particularly advantageous in a welded joint, since the increased distance between the weld and the lead layer heating of the lead can be significantly reduced. A heating of the lead could lead to a reduction in the lead strength due to the bleeding of the lead and thus to an impairment of the radiation protection. The claim 10 directed to the fasteners may be self-contained, i. claimed in a back-only on the preamble of claim 1 form. The object of such a claim is to provide a radiation protection cabin with improved radiation safety, in particular an impairment of the radiation protection in the area of welds between the Wandplatten- and profile elements is avoided.

Vorzugsweise sind die Befestigungsmittel aus einem ohnehin vorhandenen Teil der Wandplattenelemente, insbesondere einer Verkleidung gebildet, beispielsweise durch Abkanten von Blechlaschen aus der Verkleidung, was den Herstellungsaufwand reduziert. Die Befestigungsmittel sind auf sämtliche Verbindungen zwischen Profilelementen und Wandplattenelementen anwendbar.Preferably, the fastening means are formed from an already existing part of the wall panel elements, in particular a cladding, for example, by folding sheet metal tabs from the cladding, which reduces the production cost. The fasteners are applicable to all connections between profile elements and wall panel elements.

Weitere vorteilhafte Merkmale und Ausführungsformen der Erfindung gehen aus der folgenden Beschreibung der Erfindung unter Bezugnahme auf die beigefügten Zeichnungen hervor. Es zeigen:

Fig. 1:
eine Draufsicht auf einen horizontalen Querschnitt einer Strahlenschutzkabine;
Fig. 2:
einen Ausschnitt aus Fig. 1 im Bereich einer Vertikalkante der Strahlenschutz-Kabine;
Fig. 3:
einen Ausschnitt aus Fig. 1 im Bereich eines Türrahmenelements;
Fig. 4:
einen Ausschnitt aus Fig. 1 im Bereich einer Verbindungsstelle zwischen einem Profilelement und einem Wandplattenelement; und
Fig. 5:
eine Ansicht, wie in Fig. 4 gezeigt, auf die Verbindungsstelle zwischen einem Profilelement und einem Wandplattenelement.
Further advantageous features and embodiments of the invention will become apparent from the following description of the invention with reference to the accompanying drawings. Show it:
Fig. 1:
a plan view of a horizontal cross section of a radiation protection cabin;
Fig. 2:
a section from Fig. 1 in the area of a vertical edge of the radiation protection cabin;
3:
a section from Fig. 1 in the area of a door frame element;
4:
a section from Fig. 1 in the region of a connection point between a profile element and a wall plate element; and
Fig. 5:
a view as in Fig. 4 shown at the junction between a profile element and a wall plate element.

In der Strahlenschutzkabine 10 ist eine in Fig. 1 schematisch angedeutete Haltevorrichtung 30 für ein Prüfteil angeordnet. An einer Seitenwand 11 der Strahlenschutzkabine 10 ist ein Röntgenmanipulator 32 an Haltemitteln 31 befestigt. Die Seitenwände 11-14 der Strahlenschutzkabine 10 werden im wesentlichen von einer Mehrzahl von Wandplattenelementen 15 gebildet. Die Bodenwand sowie die nicht gezeigte Deckenwand der Strahlenschutzkabine 10 werden zweckmäßigerweise ebenfalls von Wandplattenelementen 16 gebildet. Die Wände der Strahlenschutzkabine 10 umfassen die Seitenwände 11-14, die Bodenwand und die Deckenwand. Die folgenden Erläuterungen betreffen im wesentlichen die Seitenwände 11-14; vorzugsweise weisen jedoch auch die Deckenwand und/oder die Bodenwand der Strahlenschutzkabine 10 die anhand der Seitenwände erläuterten bevorzugten Merkmale entsprechend auf.In the radiation protection cabin 10 is an in Fig. 1 schematically indicated holding device 30 arranged for a test part. On a side wall 11 of the radiation protection cabin 10, an X-ray manipulator 32 is attached to holding means 31. The side walls 11-14 of the radiation protection cabin 10 are essentially formed by a plurality of wall panel elements 15. The bottom wall and the ceiling wall of the radiation protection cabin 10, not shown, are expediently likewise formed by wall panel elements 16. The walls of the radiation protection cabin 10 include the side walls 11-14, the bottom wall and the ceiling wall. The following explanations essentially relate to the side walls 11-14; However, the ceiling wall and / or the bottom wall of the radiation protection cabin 10 preferably also have the preferred features explained on the basis of the side walls.

Die Wandplattenelemente 15 sind an Profilelementen 20-25 befestigt und werden von diesen getragen. Es müssen jedoch nicht sämtliche Profilelemente 20-25 eine tragende Funktion aufweisen. Profilelemente 20-24 sind insbesondere an den Verbindungsstellen zwischen den Wandplattenelementen 15, 16 vorgesehen. Es sind insbesondere Profilelemente 20 an den Vertikalkanten der Strahlenschutzkabine 10, vorzugsweise weiterhin Profilelemente 21 zwischen den Vertikalkanten, Profilelemente 24 an den Horizontalkanten und/oder Profilelemente 22 zwischen den Horizontalkanten der Strahlenschutzkabine 10 vorgesehen. An der Seitenwand 11 können ebenfalls nicht gezeigte Profilelemente zwischen den Vertikalkanten zum Verbinden der die Seitenwand 11 bildenden Wandplattenelemente vorgesehen sein.The wall panel elements 15 are attached to profile elements 20-25 and are supported by them. However, not all profile elements 20-25 have a supporting function. Profile elements 20-24 are provided in particular at the connection points between the wall plate elements 15, 16. In particular, profile elements 20 are provided on the vertical edges of the radiation protection cabin 10, preferably furthermore profile elements 21 between the vertical edges, profile elements 24 on the horizontal edges and / or profile elements 22 between the horizontal edges of the radiation protection cabin 10. On the side wall 11 also not shown profile elements between the vertical edges for connecting the side wall 11 forming wall panel elements may be provided.

Die Wandplattenelemente 15 weisen eine äußere Verkleidung 17 beispielsweise aus Blech, eine innere Verkleidung 18 beispielsweise aus Blech und eine Abschirmungslage 19 insbesondere aus Blei auf. An den Verbindungsstellen zwischen den Wandplattenelemente 15 treten Abschirmungslücken zwischen den Bleilagen 19 auf, wie am besten in Fig. 2 erkennbar. Bei herkömmlichen Strahlenschutzkabinen sind daher Leisten, Kantenleisten bzw. Eckteile zur Abdeckung dieser Abschirmungslücken außen an der Strahlenschutzkabine angebracht. Bei der vorliegenden Strahlenschutzkabine 10 sind die Profilelemente 20-24 massiv ausgeführt, d.h. sie bestehen im wesentlichen über ihren gesamten Querschnitt aus Vollmaterial, vorzugsweise Stahl, und sind insbesondere hohlraumfrei ausgeführt. Röntgenstrahlung, die auf die Verbindungsstellen zwischen den Wandplattenelementen 15 gerichtet ist, tritt daher durch den vollen Querschnitt der Profilelemente 20-24 und wird darin im wesentlichen vollständig absorbiert. Zusätzliche bleihaltige Abschirmungselemente sind nicht erforderlich.The wall panel elements 15 have an outer panel 17, for example made of sheet metal, an inner panel 18, for example made of sheet metal and a shielding layer 19, in particular made of lead. At the junctions between the wall panel elements 15, shield gaps between the lead layers 19 occur, as best in Fig. 2 recognizable. In the case of conventional radiation protection cabins, strips, edge strips or corner parts for covering these shielding gaps are therefore attached externally to the radiation protection cabin. In the present radiation protection cabin 10, the profile elements 20-24 are solid, ie they consist essentially over their entire cross-section of solid material, preferably steel, and are designed in particular cavity-free. X-radiation, which is directed to the joints between the wall panel elements 15, therefore, passes through the full cross section of the profile elements 20-24 and is substantially completely absorbed therein. Additional lead-containing shielding elements are not required.

Die begehbare Strahlenschutzkabine 10 weist eine Türöffnung 26 für Bedienpersonal auf. Die Türöffnung 26 ist im Betrieb der Röntgenvorrichtung 30 durch eine Tür 27 verschlossen, die eine Bleilage 28 enthält. Die Tür 27 kann aus der in den Fig. 1, 3 gezeigten geschlossenen Position in Pfeilrichtung mittels nicht gezeigten Führungen in eine geöffnete Position verschoben werden. Der Rahmen der Türöffnung 26 umfaßt Profilelemente 25 als Rahmenteile. Die Tür 27 umfaßt Profilteile 29, die vorzugsweise an der in den Innenraum der Strahlenschutzkabine 10 weisenden Seite der Tür 27 angeordnet sind. Die Profilelemente 25, 29 sind massiv und vorzugsweise aus Stahl ausgeführt und greifen im geschlossenen Zustand der Tür 27 vorzugsweise ineinander, so daß auf die Abschirmungslücke zwischen Tür 27 und angrenzenden Wandplattenelementen 15 gerichtete Röntgenstrahlung wirksam abgeschirmt wird. Zusätzliche bleihaltige Abschirmungen, beispielsweise herkömmliche winkelförmige, im geschlossenen Zustand der Tür einander hintergreifende Bleielemente an der Tür und dem Türrahmen sind daher nicht erforderlich.The walk-through radiation protection cabin 10 has a door opening 26 for operating personnel. The door opening 26 is closed during operation of the X-ray device 30 by a door 27 which contains a lead layer 28. The door 27 can from the in the Fig. 1 . 3 shown closed position in the arrow direction by means not shown guides are moved to an open position. The frame of the door opening 26 comprises profile elements 25 as frame parts. The door 27 comprises profile parts 29 which are preferably arranged on the side of the door 27 pointing into the interior of the radiation protection cabin 10. The profile elements 25, 29 are solid and preferably made of steel and engage in the closed state of the door 27 preferably into each other, so that directed to the shield gap between the door 27 and adjacent wall panel elements 15 X-ray radiation is effectively shielded. Additional lead-containing shields, such as conventional angle-shaped, in the closed state of the door engaging behind each other lead elements on the door and the door frame are therefore not required.

Die am Beispiel der Tür 27 erläuterten Merkmale können entsprechend für andere nicht gezeigte Öffnungen der Strahlenschutzkabine 10, beispielsweise Öffnungen zum Transportieren von Prüfteilen durch die Strahlenschutzkabine, gelten. Statt der in den Figuren gezeigten einteiligen Tür 27 kann auch eine Zweiflügeltür vorgesehen sein.The features explained using the example of the door 27 can apply correspondingly to other openings, not shown, of the radiation protection cabin 10, for example openings for transporting test parts through the radiation protection cabin. Instead of the one-piece door 27 shown in the figures, a double-wing door can also be provided.

Die Röntgenvorrichtung 30 wird vorzugsweise mit einer Röntgenröhre im Bereich von 60 - 200 kV, beispielsweise 160 kV, mit einer Röhrenleistung im Bereich von 300 - 3000 W, beispielsweise 640 W betrieben. Der Durchmesser der Profilelemente 20-24 beträgt vorzugsweise mindestens 25 mm, beispielsweise etwa 35 mm, was der Absorption von etwa 2 - 2.5 mm Blei entspricht. Der Durchmesser bezeichnet den kleinsten Querschnittsdurchmesser, bei quadratischem Querschnitt als beispielsweise die Quadratkantenlänge.The x-ray device 30 is preferably operated with an x-ray tube in the range of 60-200 kV, for example 160 kV, with a tube power in the range of 300-3000 W, for example 640 W. The diameter of the profile elements 20-24 is preferably at least 25 mm, for example about 35 mm, which corresponds to the absorption of about 2 to 2.5 mm of lead. The diameter denotes the smallest cross-sectional diameter, for square cross-section than, for example, the square edge length.

Die Wandplattenelemente 15, 16 können mittels Schweißverbindungen 41 an den entsprechenden Profilelementen 20-25 befestigt sein. Im Bereich der Verbindungsstellen zwischen Wandplattenelementen 15, 16 und Profilelementen 20-25 sind Ausschneidungen 42 in der Blechverkleidung 18 eines Wandplattenelements 15 vorgesehen, wie aus Fig. 4, 5 ersichtlich. Im Bereich der Ausschneidung 42 ist die Blechverkleidung 18 in Form einer Lasche 40 abgekantet. Die Lasche 40 ist im Beispiel der Fig. 4, 5 ins Innere der Strahlenschutzkabine 10 gebogen. Die Schweißverbindung 41 ist an der freien Außenkante 43 der Lasche 40 angeordnet. Wie aus Fig. 4 ersichtlich, weist die Schweißverbindung 41 infolge der Lasche 40 einen erheblich größeren Abstand von der Bleilage 19 des Wandplattenelements 15 auf, als wenn die Lasche 40 nicht vorhanden wäre. Die Erhitzung der Bleilage 19 beim Schweißen der Schweißverbindung 41 wird hierdurch soweit verringert, daß ein nachteiliges Verlaufen der Bleilage 19 im Bereich der Verbindungsstelle vermieden wird und eine im wesentlichen gleichmäßige Stärke der Bleilage 19 sichergestellt ist.The wall panel elements 15, 16 can be fastened by means of welded connections 41 to the corresponding profile elements 20-25. In the region of the joints between wall plate elements 15, 16 and profile elements 20-25 cutouts 42 are provided in the sheet metal covering 18 of a wall plate element 15, as seen from Fig. 4, 5 seen. In the area of cutout 42, the sheet metal panel 18 is folded in the form of a tab 40. The tab 40 is in the example of Fig. 4, 5 bent into the interior of the radiation protection cabin 10. The welded connection 41 is arranged on the free outer edge 43 of the tab 40. How out Fig. 4 can be seen, the weld 41 due to the tab 40 a much greater distance from the lead layer 19 of the wall plate member 15, as if the tab 40 would not be present. The heating of the lead layer 19 during welding of the welded joint 41 is thereby reduced to the extent that a disadvantageous bleeding of the lead layer 19 in the region of the joint is avoided and a substantially uniform thickness of the lead layer 19 is ensured.

Claims (11)

  1. Radiation protection cabin for an X-ray apparatus for non-destructive testing of test samples, wherein the radiation protection cabin (10) comprises wall panel elements (15, 16) and profile elements (20-25) for supporting and/or connecting the wall panel elements, characterized in that the profile elements (20-25) consist of steel and are massive, wherein the minimum diameter of the profile elements (20-25) is at least 20 mm such that the dimensioning of the profile elements (20-25) is sufficient to ensure radiation protection for X-Ray apparatuses with more than 100 kV.
  2. Radiation protection cabin according to claim 1, characterized in that the dimensioning of the profile elements (20-25) is sufficient to ensure radiation protection for usual non-destructive testing apparatuses.
  3. Radiation protection cabin according to claim 1 or 2, characterized in that the dimensioning of the profile elements (20-25) is sufficient to ensure radiation protection for X-Ray apparatuses with more than 200 W, preferably more than 400 W.
  4. Radiation protection cabin according to any one of claims 1 to 3, characterized in that the dimensioning of the profile elements (20-25) is chosen such that the X-ray absorption of the profile elements (20-25) corresponds to that of at least 2 mm lead, preferably at least 2.5 mm lead.
  5. Radiation protection cabin according to any one of claims 1 to 4, characterized in that the diameter of the profile elements (20-25) is at least 25 mm, preferably at least 30 mm.
  6. Radiation protection cabin according to any one of claims 1 to 5, characterized in that at least profile elements (20) at the vertical edges of the radiation protection cabin (10) are massive.
  7. Radiation protection cabin according to any one of claims 1 to 6, characterized in that profile elements (21, 22) arranged between the edges of the radiation protection cabin are massive.
  8. Radiation protection cabin according to any one of claims 1 to 7, characterized in that profile elements (25) surrounding an opening (26) of the radiation protection cabin are massive.
  9. Radiation protection cabin according to any one of claims 1 to 8, characterized in that the wall panel elements (15, 16) comprise projecting connection means (40) for connecting at the profile elements (20-25).
  10. Radiation protection cabin according to claim 9, characterized in that the connection means (40) are formed form a part of the wall panel elements (15).
  11. Radiation protection cabin according to claim 10, characterized in that the connection means (40) are lugs bent off a cladding (18) of the wall panel elements (15).
EP03090439A 2003-05-12 2003-12-15 Radiation screening cabin for an X-ray apparatus Expired - Lifetime EP1477991B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03090439A EP1477991B1 (en) 2003-05-12 2003-12-15 Radiation screening cabin for an X-ray apparatus

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE2003121434 DE10321434A1 (en) 2003-05-12 2003-05-12 Cabin for protecting against radiation from X-ray arrangement, comprises wall plate elements, profiled elements and fixing members
DE10321434 2003-05-12
EP03090422 2003-12-03
EP03090422 2003-12-03
EP03090439A EP1477991B1 (en) 2003-05-12 2003-12-15 Radiation screening cabin for an X-ray apparatus

Publications (2)

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EP1477991A1 EP1477991A1 (en) 2004-11-17
EP1477991B1 true EP1477991B1 (en) 2008-03-26

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008020730B3 (en) * 2008-04-25 2009-12-31 Bruker Axs Gmbh Safety housing for an X-ray machine with combined sash and sliding door
US8759805B2 (en) 2012-01-06 2014-06-24 Fred Lambert Radiation shielding barriers
CN103661071A (en) * 2013-11-26 2014-03-26 苏州江南航天机电工业有限公司 Radiation protection structure of X-ray detection compartment
US10600522B2 (en) * 2017-04-10 2020-03-24 United States Of America As Represented By The Administrator Of Nasa Method of making thin atomic (Z) grade shields
WO2024003264A1 (en) * 2022-07-01 2024-01-04 Freemelt Ab Additive manufacturing using a particle beam

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2838592A (en) * 1956-03-27 1958-06-10 Feketics Frank Shielding enclosures
FR1441764A (en) * 1965-04-30 1966-06-10 Calhene Protective wall
FR2443121A1 (en) * 1978-02-09 1980-06-27 Pillot Alain X=Ray screening panels - comprising laminates of sheet lead and resin-bonded board for ease of enclosure of hospital radiographic equipment etc.
US4514640A (en) * 1982-09-28 1985-04-30 Bagnell Michael J Radiation shielding structures
US4817337A (en) * 1987-09-08 1989-04-04 Amca International Corp. Radiation resistant door seal
US5043529A (en) * 1990-07-13 1991-08-27 Biomagnetic Technologies, Inc. Construction of shielded rooms using sealants that prevent electromagnetic and magnetic field leakage
NL1001051C2 (en) * 1995-08-24 1997-02-25 Intos Interieurmakers B V Shielding wall.

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