EP2141729A1 - Photomultiplier with attachment device - Google Patents

Photomultiplier with attachment device Download PDF

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Publication number
EP2141729A1
EP2141729A1 EP08011901A EP08011901A EP2141729A1 EP 2141729 A1 EP2141729 A1 EP 2141729A1 EP 08011901 A EP08011901 A EP 08011901A EP 08011901 A EP08011901 A EP 08011901A EP 2141729 A1 EP2141729 A1 EP 2141729A1
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EP
European Patent Office
Prior art keywords
photomultiplier
socket
connecting means
connection
plug contact
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
EP08011901A
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German (de)
French (fr)
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EP2141729B1 (en
Inventor
Frank Becherer
Winfried Rauer
Ralf Körnle
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Vega Grieshaber KG
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Vega Grieshaber KG
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 Vega Grieshaber KG filed Critical Vega Grieshaber KG
Priority to EP08011901.9A priority Critical patent/EP2141729B1/en
Priority to US12/219,374 priority patent/US7812298B2/en
Priority to CN200910150978.5A priority patent/CN101620973B/en
Publication of EP2141729A1 publication Critical patent/EP2141729A1/en
Application granted granted Critical
Publication of EP2141729B1 publication Critical patent/EP2141729B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes

Definitions

  • the invention relates to a photomultiplier with a fastening device.
  • Photomultipliers are used in the prior art for detecting weak light signals and converting these light signals into an electrical signal.
  • a common field of application are, for example, so-called scintillation counters, in which ionizing radiation is converted into weak flashes of light in a so-called scintillator, which are then converted by the photomultiplier into an electrical signal.
  • Scintillation counters of this kind are used, for example, in radiometric fill level measurement, wherein the contents to be measured are irradiated with a gamma source and the radiation penetrating through the contents is detected by means of a scintillation counter.
  • Photomultipliers for these applications are widely available on the market, but have the disadvantage that the cylindrically shaped photomultiplier tubes in the production have a large length variance. In applications in which only a few photons are detected, it is necessary to obstruct the photomultipliers as light-tight as possible and with high precision.
  • the photomultipliers available on the market are manufactured with an accuracy of ⁇ 5 mm in their longitudinal extension, so that in the worst case there can be a difference of up to 10 mm between the minimum available installation length and the maximum available installation length. When installing in a level gauge, in which many standard parts are used, such length tolerances not acceptable and must be corrected by a suitable length compensation.
  • a photomultiplier with a fastening device wherein the photomultiplier having a cylindrical solid, in particular glass body and a tubular sheath, the front side a light inlet and rear terminal contacts and the fastening device front side a socket and the back of a plug contact, which sits on the terminal contacts and between the plug contact and the socket with a connecting means a non-positive connection can be produced.
  • the connecting means is tubular, for example as an aluminum or steel tube.
  • the aluminum tube is advantageously designed in its diameter so that it surrounds the photomultiplier form-fitting or almost positive fit and the back is connectable to the plug contact via a plug connection and in particular a bayonet closure.
  • the plug-in contact has a circumferential edge and at least two recesses, via which two lugs formed on the connecting means can be introduced, so that a lock according to the bayonet principle is made possible.
  • a connection between the connecting means and the socket is preferably formed by an adhesive connection, which is produced for example with a potting compound.
  • a sealing ring is arranged between an inner wall of the bushing and the photomultiplier.
  • the sealing ring can be placed for example in an inner groove of the socket.
  • the socket front has a circumferential ridge, which simultaneously prevents mechanical influences from the front of the photomultiplier.
  • the socket has a peripheral edge, which serves as a front stop for the photomultiplier.
  • FIG. 1 shows a longitudinal section through a photomultiplier 10 according to the invention with fastening device.
  • the photomultiplier 10 has a cylindrical glass body 11, which is surrounded by a tubular sheath 13 circumferentially, so that only the front side, a light inlet 12 is exposed.
  • terminal contacts 14 are arranged, via which an electrical signal, which is generated from the light inlet 12 received light flash, can be tapped off.
  • the problem is that a radial clamping of the photomultiplier 10 due to the tubular sheath 13 provides no secure mounting option.
  • the tubular connection means 40, z. B. a metallic tube surrounds the photomultiplier 10 and engages the back engages over a bayonet lock in a plug contact 30, which sits on the terminal contacts 14 of the photomultiplier 10.
  • the bayonet closure is designed such that the plug contact 30 has a peripheral edge 36 in which at least two circumferential recesses 37 are provided, engage in the correspondingly arranged on the connecting means 40 lugs, so that after twisting of the connecting means a positive connection to the bayonet Principle is made.
  • the connecting tube 40 thus serves on the one hand as connecting and fastening means and on the other hand also offers the photomultiplier 10 mechanical protection against external influences.
  • the plug contact 30 has a circuit board 32 via which the electrical signals of the connection contacts 14 to a Plug 34 are guided.
  • the plug 34 is placed in the assembled state of the arrangement so as to be located outside the circumference of the connection pipe 40.
  • the socket 34 is designed such that contact pins 51 for contacting the socket 34 can be completely inserted therethrough, so a further length compensation when installing the inventive arrangement is possible.
  • a socket 20 is arranged on the connecting tube 40 and the photomultiplier 10, which serves as a mounting bracket.
  • the bush 20 has a cylindrical receiving opening, which is closed at the front by a peripheral edge.
  • the peripheral edge 36 serves as a front stop for the photomultiplier 10 and prevents the photomultiplier from slipping through the sleeve 20 and sliding out of the fastener on the front.
  • the edge 36 is dimensioned such that it comes to rest only in the side region of the light inlet 12 and at the same time as a slight phasing the photomultiplier 10 centered. Further centering of the photomultiplier 10 is achieved by a seal 22 located inside a groove 23 of the bush 20.
  • the sealing ring 22 also ensures that a potting compound 18, which establishes the connection between the connecting tube 40, the photomultiplier 10 and the bush 20, is prevented from running out of the fastening device on the front side and thus, for example, polluting the light inlet 12.
  • a potting compound 18 for example, a PUR adhesive from Delo can be used.
  • the socket 20 further comprises in the rear region so-called Start edges 25, which lead the photomultiplier 10 and the connecting tube 40 in a centered position.
  • a circumferential web 26 is arranged on the bushing 20, which on the one hand ensures that mechanical influences are kept away from the light inlet 12 of the photomultiplier 10 and, on the other hand, serves as a centering ring for a light guide plate which is used to produce a defined refractive index between a scintillator and the photomultiplier is arranged at this point.
  • FIG. 1 clearly recognizable, it is possible by the arrangement according to the invention to produce a frictional connection between the plug contact 30 and the socket 20, so that the photomultiplier 10 can be mounted with a defined distance of the light inlet 12 to the front edge of the socket 20.
  • FIGS. 2a and 2b show a perspective view of the photomultiplier 10 with fastening device FIG. 1 , Because the two FIGS. 2a and 2b show only different angles on the arrangement, they are largely explained together.
  • FIGS. 2a and 2b show the assembled arrangement, ie that the photomultiplier 10 is seated in the connecting tube 40, the rear side of the plug contact 30 is mounted and the front side, the socket 20 is connected via the adhesive connection 18.
  • the substantially cylindrically shaped bushing 20 has a mounting edge 27 in the middle region, in which holes 28 are provided.
  • the mounting edge 27 is formed substantially rectangular with various recesses, so that results in a coding form that ensures a rotationally secure installation in a predetermined position.
  • the board 32 of the plug contact 30 is also formed with a coded shape.
  • FIG. 3a shows a plan view of the light inlet 12 of the photomultiplier 10 with mounted socket 20.
  • the mounting edge 27 with the holes 28 and the coded shape of the mounting edge 27 can be seen particularly well.
  • the photomultiplier 10 is seated centered in the socket 20, wherein it is the front side protected at least from a large force application by the circumferential ridge 26 on the sleeve 20.
  • FIG. 3b shows a plan view of the plug contact 30 in the mounted state.
  • the coded shape of the board 32 can be seen particularly well, which is aligned corresponding to the mounting edge 27 of the sleeve 20.
  • the circularly arranged connection contacts 14 of the photomultiplier are also provided with a coding, which is achieved in that the otherwise equidistantly arranged on the circumference of a circle terminal contacts have at one point no pin.
  • the socket 34 is designed as a through-hole socket, so that a contact with contact pins 51 by a piercing of the socket 34 takes place.
  • the contact pins 51 depending on the overall length of the photomultiplier 10 and thus of the mounting arrangement, can be passed through the socket 34 at different distances, thereby achieving a length compensation. If the contact pins 51 are made appropriately long, thereby the variations of the installation length of the photomultiplier can be compensated.
  • FIG. 4 finally shows the photomultiplier 10 with the fastening device in the installed state in an electronics housing. Shown is a longitudinal section through the electronics housing, which corresponds to the cut in FIG. 1 is guided. Since the construction of the photomultiplier 10 with the fastening device already in FIG. 1 has been explained in detail, will be discussed only on the contact of the female connector 34 through the contact pins 51 of the electronics housing 50.
  • the contact pins 51 are made in a suitable length, that they can achieve a length compensation, the about 10 mm length variance of the photomultiplier 10.
  • the photomultiplier 10 approximately has the maximum installation length, so that the board 32 comes to rest in the electronics housing 50 when installed near the rear wall of the electronics housing 50.
  • the photomultiplier 10 can be exchanged with the fastening device as a module, while a secure contact and a defined position for the light inlet 12 guaranteed.

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Abstract

The photomultiplier (10) has a solid cylindrical body e.g. glass body, a tubular jacket, a light inlet (12) on a front end, and connecting contacts (14) on a back end. A fastening device has a socket (20) on the front end and a plug contact (30) resting on the connecting contacts on the back end. A force-fitting and form-fitting connection is produced between the plug contact and the socket by a connecting component (40) that is tubular in shape. An adhesive bond (18) is positioned between the connecting component and the socket.

Description

Die Erfindung betrifft einen Photomultiplier mit einer Befestigungsvorrichtung.The invention relates to a photomultiplier with a fastening device.

Photomultiplier werden im Stand der Technik zur Detektion schwacher Lichtsignale und Überführung dieser Lichtsignale in ein elektrisches Signal eingesetzt. Ein häufiger Anwendungsbereich sind beispielsweise sogenannte Scintillationszähler, bei denen in einem sogenannten Scintillator ionisierende Strahlung in schwache Lichtblitze umgesetzt wird, die anschließend von dem Photomultiplier in ein elektrisches Signal umgewandelt werden.Photomultipliers are used in the prior art for detecting weak light signals and converting these light signals into an electrical signal. A common field of application are, for example, so-called scintillation counters, in which ionizing radiation is converted into weak flashes of light in a so-called scintillator, which are then converted by the photomultiplier into an electrical signal.

Derartige Scintillationszähler finden beispielsweise in der radiometrischen Füllstandsmessung Anwendung, wobei das zu messende Füllgut mit einer Gammaquelle durchstrahlt und die Füllgut durchdringende Strahlung mittels eines Scintillationszählers detektiert wird.Scintillation counters of this kind are used, for example, in radiometric fill level measurement, wherein the contents to be measured are irradiated with a gamma source and the radiation penetrating through the contents is detected by means of a scintillation counter.

Photomultiplier für diese Anwendungen sind auf dem Markt vielfältig verfügbar, weisen aber den Nachteil auf, dass die zylindrisch ausgeformten Photomultiplier-Röhren in der Fertigung eine große Längenvarianz aufweisen. Bei Anwendungen, bei denen teilweise nur wenige Photonen detektiert werden, ist es jedoch nötig, die Photomultiplier möglichst lichtdicht und hochpräzise zu verbauen. Die auf dem Markt verfügbaren Photomultiplier werden in ihrer Längserstreckung mit einer Genauigkeit von ±5 mm hergestellt, so dass zwischen der minimal verfügbaren Einbaulänge und der maximal verfügbaren Einbaulänge im ungünstigsten Fall eine Differenz von bis zu 10 mm bestehen kann. Beim Einbau in ein Füllstandsmessgerät, bei dem sehr viele Standardteile zum Einsatz kommen, sind derartige Längentoleranzen nicht akzeptabel und müssen durch einen geeigneten Längenausgleich korrigiert werden.Photomultipliers for these applications are widely available on the market, but have the disadvantage that the cylindrically shaped photomultiplier tubes in the production have a large length variance. In applications in which only a few photons are detected, it is necessary to obstruct the photomultipliers as light-tight as possible and with high precision. The photomultipliers available on the market are manufactured with an accuracy of ± 5 mm in their longitudinal extension, so that in the worst case there can be a difference of up to 10 mm between the minimum available installation length and the maximum available installation length. When installing in a level gauge, in which many standard parts are used, such length tolerances not acceptable and must be corrected by a suitable length compensation.

Es ist Aufgabe der Erfindung, einen Photomultiplier mit einer Befestigungsvorrichtung zur Verfügung zu stellen, wobei durch die Befestigungsvorrichtung Längenabweichungen des Photomultipliers ausgleichbar sind.It is an object of the invention to provide a photomultiplier with a fastening device, wherein by the fastening device length deviations of the photomultiplier are compensated.

Diese Aufgabe wird gelöst durch einen Photomultiplier mit den Merkmalen des Patentanspruchs 1.This object is achieved by a photomultiplier having the features of patent claim 1.

Zur Verfügung gestellt wird ein Photomultiplier mit einer Befestigungsvorrichtung, wobei der Photomultiplier einen zylindrischen Fest-, insbesondere Glaskörper und eine schlauchförmige Ummantelung, vorderseitig einen Lichteinlass und rückseitig Anschlusskontakte aufweist und die Befestigungsvorrichtung vorderseitig eine Buchse und rückseitig einen Steckkontakt, der auf den Anschlusskontakten sitzt, aufweist und zwischen dem Steckkontakt und der Buchse mit einem Verbindungsmittel eine kraftschlüssige Verbindung herstellbar ist.Provided is a photomultiplier with a fastening device, wherein the photomultiplier having a cylindrical solid, in particular glass body and a tubular sheath, the front side a light inlet and rear terminal contacts and the fastening device front side a socket and the back of a plug contact, which sits on the terminal contacts and between the plug contact and the socket with a connecting means a non-positive connection can be produced.

Durch eine derartige Verbindung wird erreicht, dass der Photomultiplier zwischen der vorderseitig angeordneten Buchse und dem rückseitig angeordneten Steckkontakt eingespannt ist und gleichzeitig keine radialen Kräfte auf den relativ empfindlichen Glaskörper des Photomultipliers wirken.By such a connection it is achieved that the photomultiplier is clamped between the sleeve arranged on the front side and the plug contact arranged on the rear side and at the same time no radial forces act on the relatively sensitive glass body of the photomultiplier.

Ein guter Schutz gegen äußere Krafteinwirkung auf dem Glaskörper des Photomultipliers und eine besonders einfache Herstellung der kraftschlüssigen Verbindung ist möglich, wenn das Verbindungsmittel rohrförmig, beispielsweise als Aluminium-oder Stahlrohr, ausgebildet ist. Das Aluminiumrohr ist dabei in seinem Durchmesser vorteilhafterweise so gestaltet, dass es den Photomultiplier formschlüssig oder nahezu formschlüssig umgibt und rückseitig mit dem Steckkontakt über eine Steckerverbindung und insbesondere einen Bajonettverschluss verbindbar ist. Der Steckkontakt weist dazu einen umlaufenden Rand sowie wenigsten zwei Ausnehmungen auf, über die zwei an dem Verbindungsmittel angeformte Nasen einführbar sind, so dass eine Verriegelung nach dem Bajonett-Prinzip ermöglicht ist.A good protection against external force on the glass body of the photomultiplier and a particularly simple production of the frictional connection is possible if the connecting means is tubular, for example as an aluminum or steel tube. The aluminum tube is advantageously designed in its diameter so that it surrounds the photomultiplier form-fitting or almost positive fit and the back is connectable to the plug contact via a plug connection and in particular a bayonet closure. For this purpose, the plug-in contact has a circumferential edge and at least two recesses, via which two lugs formed on the connecting means can be introduced, so that a lock according to the bayonet principle is made possible.

Eine Verbindung zwischen dem Verbindungsmittel und der Buchse ist bevorzugterweise durch eine Klebeverbindung, die beispielsweise mit einer Vergussmasse hergestellt wird, gebildet. Durch unterschiedlich weites Überlappen des Verbindungsmittels mit der Buchse ist außerdem ein Ausgleich von Fertigungstoleranzen bei der Herstellung des Photomultiplers möglich.A connection between the connecting means and the socket is preferably formed by an adhesive connection, which is produced for example with a potting compound. By varying widely overlapping the connecting means with the socket, a compensation of manufacturing tolerances in the manufacture of the photomultiplier is also possible.

Um zu verhindern, dass die Vergussmasse an den vorderseitigen Lichteinlass des Photomultipliers gelangt und um bei der Montage eine zentrierte Ausrichtung des Photomultipliers in der Buchse zu erreichen, ist es sinnvoll, wenn zwischen einer Innenwandung der Buchse und dem Photomultiplier ein Dichtring angeordnet ist. Der Dichtring kann dabei beispielsweise in einer Innennut der Buchse platziert sein.In order to prevent the potting compound from reaching the front-side light inlet of the photomultiplier and in order to achieve a centered alignment of the photomultiplier in the bushing during assembly, it is expedient if a sealing ring is arranged between an inner wall of the bushing and the photomultiplier. The sealing ring can be placed for example in an inner groove of the socket.

Zur Gewährleistung eines konstanten vorderseitigen Abstands des Lichteinlasses zu einem davon angebrachten Scintillator sowie zur zentrierten Anbringung eines Lichtleitblättchens zwischen dem Scintillator und dem Lichteinlass kann es sinnvoll sein, wenn die Buchse vorderseitig einen umlaufenden Steg aufweist, der gleichzeitig mechanische Einflüsse von der Vorderseite des Photomultipliers abhält.To ensure a constant front-to-back distance of the light inlet to a scintillator mounted thereon and centered attachment of a light guide between the scintillator and the light inlet, it may be useful if the socket front has a circumferential ridge, which simultaneously prevents mechanical influences from the front of the photomultiplier.

Innenseitig kann es sinnvoll sein, wenn die Buchse einen umlaufenden Rand aufweist, die als vorderseitiger Anschlag für den Photomultiplier dient.On the inside, it may be useful if the socket has a peripheral edge, which serves as a front stop for the photomultiplier.

Bei Verwendung eines rohrförmigen Verbindungsmittels ist es für eine zentrierte Ausrichtung des Verbindungsmittels und des Photomultipliers zweckmäßig, wenn in der Buchse innenseitig Anlaufkanten vorgesehen sind, die den Photomultiplier und das Verbindungsmittel in eine zentrierte Position führen und damit definiert ausrichten.When using a tubular connecting means, it is expedient for a centered alignment of the connecting means and the photomultiplier when in the sleeve inside start-up edges are provided which guide the photomultiplier and the connecting means in a centered position and aligned with defined.

Die Erfindung wird anschließend unter Bezugnahme auf die beigefügten Figuren ausführlich erläutert. Es zeigen:

Figur 1
einen Längsschnitt durch einen erfindungsgemäßen Pho- tomultiplier mit Befestigungsvorrichtung,
Figur 2a
eine perspektivische Darstellung des Photomultipliers aus Figur 1,
Figur 2b
die perspektivische Darstellung des Photomultipliers aus Figur 2a unter anderem Blickwinkel,
Figur 3a
eine Draufsicht auf den Lichteinlass des Photomul- tipliers mit Befestigungsvorrichtung,
Figur 3b
eine Draufsicht auf den Steckkontakt des Photomul- tipliers und
Figur 4
einen Längsschnitt durch ein Elektronikgehäuse mit darin verbautem Photomultiplier mit Befestigungsvor- richtung.
The invention will be explained in detail below with reference to the attached figures. Show it:
FIG. 1
a longitudinal section through a Pho tomultiplier invention with fastening device,
FIG. 2a
a perspective view of the photomultiplier FIG. 1 .
FIG. 2b
the perspective view of the photomultiplier FIG. 2a among other things,
FIG. 3a
a top view of the light inlet of the photomultiplier with fastening device,
FIG. 3b
a plan view of the plug contact of the photomultiplier and
FIG. 4
a longitudinal section through an electronics housing with built-in photomultiplier with Befestigungsvor- direction.

Figur 1 zeigt einen Längsschnitt durch einen erfindungsgemäßen Photomultiplier 10 mit Befestigungsvorrichtung. Der Photomultiplier 10 weist einen zylindrischen Glaskörper 11 auf, der von einer schlauchförmigen Ummantelung 13 umfänglich umgeben ist, so dass lediglich vorderseitig ein Lichteinlass 12 freigelegt ist. Rückseitig sind an dem Photomultiplier 10 Anschlusskontakte 14 angeordnet, über die ein elektrisches Signal, das aus durch den Lichteinlass 12 aufgenommenen Lichtblitz erzeugt wird, abgreifbar ist. Problematisch ist, dass eine radiale Klemmung des Photomultiplers 10 auf Grund der schlauchförmigen Ummantelung 13 keine sichere Befestigungsmöglichkeit bietet. Außerdem hätte eine Klemmung den Nachteil, dass temperaturbedingte Volumenänderungen einer Klemmhülse Kräfte auf den zylindrischen Glaskörper 11 des Photomultiplers 10 leiten, die zu dessen Zerstörung führen können. Das rohrförmig ausgebildete Verbindungsmittel 40, z. B. ein metallisches Rohr, umgibt den Photomultipler 10 und greift rückseitig über einen Bajonettverschluss in einen Steckkontakt 30 eingreift, der auf den Anschlusskontakten 14 des Photomultipliers 10 sitzt. Der Bajonettverschluss ist derart ausgebildet, dass der Steckkontakt 30 einen umlaufenden Rand 36 aufweist, in dem wenigstens zwei umfängliche Ausnehmungen 37 vorgesehen sind, in die korrespondierend an dem Verbindungsmittel 40 angeordnete Nasen eingreifen, so dass nach einem Verdrehen des Verbindungsmittels eine formschlüssige Verbindung nach dem Bajonett-Prinzip hergestellt ist. Das Verbindungsrohr 40 dient damit einerseits als Verbindungs- und Befestigungsmittel und bietet dem Photomultipler 10 andererseits auch mechanischen Schutz vor äußeren Einflüssen. FIG. 1 shows a longitudinal section through a photomultiplier 10 according to the invention with fastening device. The photomultiplier 10 has a cylindrical glass body 11, which is surrounded by a tubular sheath 13 circumferentially, so that only the front side, a light inlet 12 is exposed. On the back of the photomultiplier 10 terminal contacts 14 are arranged, via which an electrical signal, which is generated from the light inlet 12 received light flash, can be tapped off. The problem is that a radial clamping of the photomultiplier 10 due to the tubular sheath 13 provides no secure mounting option. In addition, a clamping would have the disadvantage that temperature-induced changes in volume of a clamping sleeve forces on the cylindrical glass body 11 of the photomultiplier 10, which can lead to its destruction. The tubular connection means 40, z. B. a metallic tube surrounds the photomultiplier 10 and engages the back engages over a bayonet lock in a plug contact 30, which sits on the terminal contacts 14 of the photomultiplier 10. The bayonet closure is designed such that the plug contact 30 has a peripheral edge 36 in which at least two circumferential recesses 37 are provided, engage in the correspondingly arranged on the connecting means 40 lugs, so that after twisting of the connecting means a positive connection to the bayonet Principle is made. The connecting tube 40 thus serves on the one hand as connecting and fastening means and on the other hand also offers the photomultiplier 10 mechanical protection against external influences.

Zur Herstellung einer elektrischen Verbindung zu dem Photomultiplier weist der Steckkontakt 30 eine Platine 32 auf, über die die elektrischen Signale der Anschlusskontakte 14 zu einem Stecker 34 geführt werden. Der Stecker 34 ist in zusammengebautem Zustand der Anordnung derart platziert, dass er außerhalb des Umfangs des Verbindungsrohrs 40 angeordnet ist. Die Steckerbuchse 34 ist derart ausgestaltet, dass Kontaktpins 51 zur Kontaktierung der Steckerbuchse 34 vollständig durch diese hindurchgesteckt werden können, so ist ein weiterer Längenausgleich beim Verbau der erfindungsgemäß Anordnung möglich.To produce an electrical connection to the photomultiplier, the plug contact 30 has a circuit board 32 via which the electrical signals of the connection contacts 14 to a Plug 34 are guided. The plug 34 is placed in the assembled state of the arrangement so as to be located outside the circumference of the connection pipe 40. The socket 34 is designed such that contact pins 51 for contacting the socket 34 can be completely inserted therethrough, so a further length compensation when installing the inventive arrangement is possible.

Vorderseitig ist an dem Verbindungsrohr 40 sowie dem Photomultiplier 10 eine Buchse 20 angeordnet, die als Montagehalterung dient. Die Buchse 20 weist eine zylindrische Aufnahmeöffnung auf, die vorderseitig durch einen umlaufenden Rand abgeschlossen ist. Der umlaufende Rand 36 dient als vorderseitiger Anschlag für den Photomultiplier 10 und verhindert, dass der Photomultiplier durch die Buchse 20 hindurchrutscht und vorderseitig aus der Befestigungsvorrichtung rutschen kann. Der Rand 36 ist derart dimensioniert, dass er lediglich im Seitenbereich des Lichteinlasses 12 zum Liegen kommt und gleichzeitig so eine leichte Anphasung den Photomultiplier 10 zentriert. Eine weitere Zentrierung des Photomultipliers 10 wird durch einen innenseitig in einer Nut 23 der Buchse 20 liegenden Dichtung 22 erreicht. Der Dichtring 22 gewährleistet außerdem, dass eine Vergussmasse 18, die die Verbindung zwischen dem Verbindungsrohr 40, dem Photomultiplier 10 und der Buchse 20 herstellt, daran gehindert wird, vorderseitig aus der Befestigungsvorrichtung herauszulaufen und damit beispielsweise den Lichteinlass 12 zu verschmutzen. Als Vergussmasse 18 kann beispielsweise ein PUR-Klebstoff der Firma Delo zum Einsatz kommen.On the front side, a socket 20 is arranged on the connecting tube 40 and the photomultiplier 10, which serves as a mounting bracket. The bush 20 has a cylindrical receiving opening, which is closed at the front by a peripheral edge. The peripheral edge 36 serves as a front stop for the photomultiplier 10 and prevents the photomultiplier from slipping through the sleeve 20 and sliding out of the fastener on the front. The edge 36 is dimensioned such that it comes to rest only in the side region of the light inlet 12 and at the same time as a slight phasing the photomultiplier 10 centered. Further centering of the photomultiplier 10 is achieved by a seal 22 located inside a groove 23 of the bush 20. The sealing ring 22 also ensures that a potting compound 18, which establishes the connection between the connecting tube 40, the photomultiplier 10 and the bush 20, is prevented from running out of the fastening device on the front side and thus, for example, polluting the light inlet 12. As a potting compound 18, for example, a PUR adhesive from Delo can be used.

Zur weiteren zentrierten Ausrichtung der Anordnung aus Photomultiplier 10 und Verbindungsrohr 40 in der Buchse 20 weist die Buchse 20 des Weiteren im rückseitigen Bereich sogenannte Anlaufkanten 25 auf, die den Photomultiplier 10 und das Verbindungsrohr 40 in eine zentrierte Position führen.For further centered alignment of the arrangement of photomultiplier 10 and connecting tube 40 in the socket 20, the socket 20 further comprises in the rear region so-called Start edges 25, which lead the photomultiplier 10 and the connecting tube 40 in a centered position.

Vorderseitig ist an der Buchse 20 ein umlaufender Steg 26 angeordnet, der einerseits gewährleistet, dass mechanische Einflüsse von dem Lichteinlass 12 des Photomultipliers 10 ferngehalten werden und andererseits als Zentrierring für ein Lichtleitblättchen dient, das zur Herstellung eines definierten Brechungsindex verlaufendes zwischen einem Scintillator und dem Photomultiplier an dieser Stelle angeordnet ist.On the front side, a circumferential web 26 is arranged on the bushing 20, which on the one hand ensures that mechanical influences are kept away from the light inlet 12 of the photomultiplier 10 and, on the other hand, serves as a centering ring for a light guide plate which is used to produce a defined refractive index between a scintillator and the photomultiplier is arranged at this point.

Wie aus Figur 1 deutlich erkennbar, ist es durch die erfindungsgemäße Anordnung möglich, eine kraftschlüssige Verbindung zwischen dem Steckkontakt 30 und der Buchse 20 herzustellen, so dass der Photomultiplier 10 mit einem definierten Abstand des Lichteinlasses 12 zur Vorderkante der Buchse 20 montiert werden kann.How out FIG. 1 clearly recognizable, it is possible by the arrangement according to the invention to produce a frictional connection between the plug contact 30 and the socket 20, so that the photomultiplier 10 can be mounted with a defined distance of the light inlet 12 to the front edge of the socket 20.

Die Figuren 2a und 2b zeigen eine perspektivische Darstellung des Photomultipliers 10 mit Befestigungsvorrichtung aus Figur 1. Da die beiden Figuren 2a und 2b nur unterschiedliche Blickwinkel auf die Anordnung zeigen, werden sie weitgehend gemeinsam erläutert.The FIGS. 2a and 2b show a perspective view of the photomultiplier 10 with fastening device FIG. 1 , Because the two FIGS. 2a and 2b show only different angles on the arrangement, they are largely explained together.

Die Figuren 2a und 2b zeigen die zusammengebaute Anordnung, d. h. dass der Photomultiplier 10 in dem Verbindungsrohr 40 sitzt, rückseitig der Steckkontakt 30 angebracht ist und vorderseitig die Buchse 20 über die Klebeverbindung 18 verbunden ist. In dieser Darstellung ist besonders deutlich zu erkennen, dass die im Wesentlichen zylindrisch ausgeformte Buchse 20 im mittleren Bereich einen Montagerand 27 aufweist, in den Bohrungen 28 vorgesehen sind. Der Montagerand 27 ist im Wesentlichen rechteckig mit verschiedenen Aussparungen ausgebildet, so dass sich eine kodierende Form ergibt, die einen verdrehsicheren Einbau in einer vorgegebenen Position gewährleistet. Bei Zusammenbau der Anordnung ist darauf zu achten, dass die kodierende Form des Montagerandes 27 korrekt zur Platine 32 des Steckkontakts 30 im rückseitigen Bereich ausgerichtet ist. Die Platine 32 des Steckkontakts 30 ist ebenfalls mit einer kodierten Form ausgebildet. Beim Einbau der Anordnung in ein Gehäuse ist durch Formumgebung nach Schlüssel-Schloss-Prinzip gewährleistet, dass die Steckerbuchse 34 korrekt kontaktiert wird.The FIGS. 2a and 2b show the assembled arrangement, ie that the photomultiplier 10 is seated in the connecting tube 40, the rear side of the plug contact 30 is mounted and the front side, the socket 20 is connected via the adhesive connection 18. In this illustration, it can be seen particularly clearly that the substantially cylindrically shaped bushing 20 has a mounting edge 27 in the middle region, in which holes 28 are provided. The mounting edge 27 is formed substantially rectangular with various recesses, so that results in a coding form that ensures a rotationally secure installation in a predetermined position. When assembling the arrangement, make sure that the coding shape of the mounting edge 27 is aligned correctly with the board 32 of the plug-in contact 30 in the rear area. The board 32 of the plug contact 30 is also formed with a coded shape. When installing the arrangement in a housing is ensured by mold environment key-lock principle that the socket 34 is contacted correctly.

Figur 3a zeigt eine Draufsicht auf den Lichteinlass 12 des Photomultipliers 10 mit montierter Buchse 20. In dieser Darstellung ist der Montagerand 27 mit den Bohrungen 28 sowie die kodierte Form des Montagerands 27 besonders gut zu erkennen. Der Photomultiplier 10 sitzt zentriert in der Buchse 20, wobei er vorderseitig zumindest vor einer großflächigen Krafteinwirkung durch den umlaufenden Steg 26 an der Buchse 20 geschützt ist. FIG. 3a shows a plan view of the light inlet 12 of the photomultiplier 10 with mounted socket 20. In this illustration, the mounting edge 27 with the holes 28 and the coded shape of the mounting edge 27 can be seen particularly well. The photomultiplier 10 is seated centered in the socket 20, wherein it is the front side protected at least from a large force application by the circumferential ridge 26 on the sleeve 20.

Figur 3b zeigt eine Draufsicht auf den Steckkontakt 30 im montierten Zustand. In dieser Darstellung ist besonders gut die kodierte Form der Platine 32 zu erkennen, die korrespondierend zum Montagerand 27 der Buchse 20 ausgerichtet ist. Die kreisförmig angeordneten Anschlusskontakte 14 des Photomultipliers sind ebenfalls mit einer Kodierung versehen, die dadurch erreicht wird, dass die ansonsten äquidistant auf dem Umfang eines Kreises angeordneten Anschlusskontakte an einer Stelle keinen Pin aufweisen. Durch eine korrespondierende Ausführung der Platine wird damit ebenfalls eine definierte Anschlusskonfiguration erreicht. FIG. 3b shows a plan view of the plug contact 30 in the mounted state. In this illustration, the coded shape of the board 32 can be seen particularly well, which is aligned corresponding to the mounting edge 27 of the sleeve 20. The circularly arranged connection contacts 14 of the photomultiplier are also provided with a coding, which is achieved in that the otherwise equidistantly arranged on the circumference of a circle terminal contacts have at one point no pin. By a corresponding design of the board thus also a defined connection configuration is achieved.

Wie schon oben angeführt, ist die Steckerbuchse 34 als Durchlochsteckerbuchse ausgeführt, so dass eine Kontaktierung mit Kontaktpins 51 durch ein Durchstechen der Steckerbuchse 34 erfolgt. Durch dieses Durchstechen können die Kontaktpins 51 je nach Baulänge des Photomultipliers 10 und damit der Montageanordnung unterschiedlich weit durch die Steckerbuchse 34 hindurchgeführt werden, so dass dadurch ein Längenausgleich erreicht wird. Wenn die Kontaktpins 51 geeignet lang ausgeführt sind, können dadurch die Variationen der Einbaulänge des Photomultipliers kompensiert werden.As already stated above, the socket 34 is designed as a through-hole socket, so that a contact with contact pins 51 by a piercing of the socket 34 takes place. As a result of this piercing, the contact pins 51, depending on the overall length of the photomultiplier 10 and thus of the mounting arrangement, can be passed through the socket 34 at different distances, thereby achieving a length compensation. If the contact pins 51 are made appropriately long, thereby the variations of the installation length of the photomultiplier can be compensated.

Figur 4 zeigt schließlich den Photomultiplier 10 mit der Befestigungsvorrichtung in eingebautem Zustand in einem Elektronikgehäuse. Gezeigt ist ein Längsschnitt durch das Elektronikgehäuse, der korrespondierend zu dem Schnitt in Figur 1 geführt ist. Da der Aufbau des Photomultipliers 10 mit der Befestigungsvorrichtung bereits in Figur 1 ausführlich erläutert wurde, wird lediglich auf die Kontaktierung der Steckerbuchse 34 durch die Kontaktpins 51 des Elektronikgehäuses 50 eingegangen. Die Kontaktpins 51 sind in geeigneter Länge ausgeführt, dass sie einen Längenausgleich, der etwa 10 mm Längenvarianz des Photomultipliers 10 erreichen können. In der in Figur 4 dargestellten Ausführungsform weist der Photomultiplier 10 annähernd die maximale Einbaulange auf, so dass die Platine 32 in dem Elektronikgehäuse 50 bei Einbau nahe der Rückwand des Elektronikgehäuses 50 zum Liegen kommt. Bei einer geringeren Einbaulänge des Photomultipliers 10 wird durch die Befestigungsvorrichtung trotzdem eine definierte Vorderkante für den Lichteinlass 12 gewährleistet und durch die Kontaktpins 51, eine rückseitige Kontaktierung der Anordnung erreicht. Durch den oben beschriebenen Aufbau kann der Photomultipler 10 mit der Befestigungsvorrichtung als Modul ausgetauscht werden, während eine sichere Kontaktierung sowie eine definierte Position für den Lichteinlass 12 gewährleistet bleiben. Beim Zusammenbau der Anordnung aus Photomultipler 10 und Befestigungsvorrichtung wird der Lichteinlass 12 durch die rückseitige Verspannung über das Verbindungsrohr 40 und den über dem Bajonettverschluss verbundenen Steckkontakt 30 vorderseitig gegen den umlaufenden Rand 36 gepresst. Dieser Zustand wird durch das Verkleben des Verbindungsrohrs 40 mit der Buchse 20 fixiert, sodass die Position des Photomultiplers 10 festgelegt ist. Das Verbindungsrohr 40 taucht beim Verspannen je nach Baulänge des Photomultiplers 10 unterschiedlich tief in die Buchse 20 ein und gewährleistet so die kraftschlüssige Verbindung zwischen dem Steckkontakt 30 und der Buchse 20. FIG. 4 finally shows the photomultiplier 10 with the fastening device in the installed state in an electronics housing. Shown is a longitudinal section through the electronics housing, which corresponds to the cut in FIG. 1 is guided. Since the construction of the photomultiplier 10 with the fastening device already in FIG. 1 has been explained in detail, will be discussed only on the contact of the female connector 34 through the contact pins 51 of the electronics housing 50. The contact pins 51 are made in a suitable length, that they can achieve a length compensation, the about 10 mm length variance of the photomultiplier 10. In the in FIG. 4 In the illustrated embodiment, the photomultiplier 10 approximately has the maximum installation length, so that the board 32 comes to rest in the electronics housing 50 when installed near the rear wall of the electronics housing 50. In the case of a smaller installation length of the photomultiplier 10, a defined leading edge for the light inlet 12 is nevertheless ensured by the fastening device, and the back contact of the arrangement is achieved by the contact pins 51. Due to the structure described above, the photomultiplier 10 can be exchanged with the fastening device as a module, while a secure contact and a defined position for the light inlet 12 guaranteed. When assembling the assembly of photomultiplier 10 and fastening device of the light inlet 12 is pressed by the back tension on the connecting tube 40 and connected via the bayonet fitting plug contact 30 on the front side against the peripheral edge 36. This state is fixed by bonding the connection pipe 40 to the socket 20, so that the position of the photomultiplier 10 is fixed. The connecting tube 40 immersed during clamping depending on the length of the photomultiplier 10 of different depths in the socket 20 and thus ensures the frictional connection between the plug contact 30 and the socket 20th

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Photomultiplierphotomultiplier
1111
zylindrischer Glaskörpercylindrical glass body
1212
Lichteinlasslight inlet
1414
Anschlusskontakteterminals
1818
Klebeverbindungadhesive bond
2020
BuchseRifle
2222
Dichtungpoetry
2323
Nutgroove
2424
Randedge
2525
Anlaufkanteleading edge
2626
Stegweb
2727
Montagerandmounting edge
2828
Bohrungendrilling
3030
Steckkontaktplug contact
3232
Platinecircuit board
3434
Steckerbuchsesocket
3636
Randedge
3737
Ausnehmungrecess
4040
Verbindungsmittel/VerbindungsrohrConnecting means / connecting pipe
4242
Nasenose
5050
Elektronikgehäuseelectronics housing
5151
Kontaktpinscontact pins

Claims (11)

Photomultiplier (10) mit einer Befestigungsvorrichtung, wobei der Photomultiplier (10) einen zylindrischen Festkörper (11) und eine schlauchförmige Ummantelung, vorderseitig einen Lichteinlass (12) und rückseitig Anschlusskontakte (14) aufweist, und wobei
die Befestigungsvorrichtung vorderseitig über eine Buchse (20) und rückseitig über einen Steckkontakt (30), der auf den Anschlusskontakten (14) sitzt, verfügt, und wobei zwischen dem Steckkontakt (30) und der Buchse (20) eine kraftschlüssige und formschlüssige Verbindung mit einem Verbindungsmittel (40) herstellbar ist.Photomultiplier (10) with a fastening device, wherein the photomultiplier (10) has a cylindrical solid (11) and a tubular sheath, the front side a light inlet (12) and rear terminal contacts (14), and wherein
the fastening device on the front side via a socket (20) and the back via a plug contact (30) which sits on the connection contacts (14) has, and wherein between the plug contact (30) and the socket (20) a non-positive and positive connection with a Connecting means (40) can be produced. Photomultiplier (10) nach Anspruch 1,
dadurch gekennzeichnet, dass
das Verbindungsmittel (40) rohrförmig ausgebildet ist.Photomultiplier (10) according to claim 1,
characterized in that
the connecting means (40) is tubular. Photomultiplier (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
zwischen dem Verbindungsmittel (40) und der Buchse (20) eine Klebeverbindung (18) angeordnet ist.Photomultiplier (10) according to one of the preceding claims,
characterized in that
between the connecting means (40) and the sleeve (20) an adhesive connection (18) is arranged. Photomultipler (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
durch ein unterschiedlich weites Überlappen des Verbindungsmittels (40) mit Buche (20) ein Längenausgleich von Herstellungstoleranzen des Photomultiplers (10) möglich ist.Photomultiplier (10) according to one of the preceding claims,
characterized in that
by a different far overlap of the connecting means (40) with beech (20) a length compensation of manufacturing tolerances of the photomultiplier (10) is possible. Photomultiplier (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Klebeverbindung (18) aus einer Vergussmasse besteht.Photomultiplier (10) according to one of the preceding claims,
characterized in that
the adhesive connection (18) consists of a potting compound. Photomultiplier (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
eine Verbindung zwischen dem Verbindungsmittel (40) und dem Steckkontakt (30) durch einen Bajonettverschluss gebildet ist.Photomultiplier (10) according to one of the preceding claims,
characterized in that
a connection between the connecting means (40) and the plug contact (30) is formed by a bayonet closure. Photomultiplier (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
zwischen einer Innenwandung der Buchse (20) und dem Photomultiplier (10) ein Dichtring (22) angeordnet ist.Photomultiplier (10) according to one of the preceding claims,
characterized in that
between a inner wall of the sleeve (20) and the photomultiplier (10) a sealing ring (22) is arranged. Photomultiplier (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Buchse (20) vorderseitig einen innen umlaufenden Rand (24) aufweist.Photomultiplier (10) according to one of the preceding claims,
characterized in that
the socket (20) has an inner circumferential edge (24) on the front side. Photomultiplier (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Buchse (20) vorderseitig einen umlaufenden Steg (26) aufweist.Photomultiplier (10) according to one of the preceding claims,
characterized in that
the socket (20) has on the front side a circumferential web (26). Photomultiplier (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
zwischen einer Vorderkante der Buchse (20) und einer Vorderkante des Photomultipliers (10) ein definierter Abstand festlegbar ist.Photomultiplier (10) according to one of the preceding claims,
characterized in that
between a front edge of the socket (20) and a front edge of the photomultiplier (10) a defined distance can be fixed. Photomultiplier (10) nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, dass
der Festkörper (11) ein Glaskörper ist.Photomultiplier (10) according to one of claims 1 to 10,
characterized in that
the solid body (11) is a glass body.
EP08011901.9A 2008-07-02 2008-07-02 Photomultiplier with attachment device Not-in-force EP2141729B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08011901.9A EP2141729B1 (en) 2008-07-02 2008-07-02 Photomultiplier with attachment device
US12/219,374 US7812298B2 (en) 2008-07-02 2008-07-21 Photomultiplier with fastening device
CN200910150978.5A CN101620973B (en) 2008-07-02 2009-07-01 Photomultiplier with attachment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08011901.9A EP2141729B1 (en) 2008-07-02 2008-07-02 Photomultiplier with attachment device

Publications (2)

Publication Number Publication Date
EP2141729A1 true EP2141729A1 (en) 2010-01-06
EP2141729B1 EP2141729B1 (en) 2018-08-29

Family

ID=40225149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08011901.9A Not-in-force EP2141729B1 (en) 2008-07-02 2008-07-02 Photomultiplier with attachment device

Country Status (3)

Country Link
US (1) US7812298B2 (en)
EP (1) EP2141729B1 (en)
CN (1) CN101620973B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020206944A1 (en) 2020-06-03 2021-12-09 Vega Grieshaber Kg ELECTRONIC CUP WITH INTEGRATED BASE CONTACTS

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Publication number Priority date Publication date Assignee Title
US3692415A (en) * 1971-03-22 1972-09-19 John W Shiller Photometric analyzer employing fiber optic light transmitting means
FR2297416A1 (en) * 1975-01-07 1976-08-06 Anvar Analytical determn. of luminescence of solids - using filter and movable heater, in material structure study, archaeology, geology

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Publication number Priority date Publication date Assignee Title
US3305689A (en) * 1963-06-26 1967-02-21 Sanders Associates Inc Electro-optical signal converter system
US5070249A (en) * 1989-12-12 1991-12-03 Bicron Corporation Photomultiplier tube mounting for well logging detectors
US6465767B2 (en) * 2000-12-27 2002-10-15 General Electric Company Photomultiplier tube reprocessing
US7694610B2 (en) * 2007-06-27 2010-04-13 Siemens Medical Solutions Usa, Inc. Photo-multiplier tube removal tool

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692415A (en) * 1971-03-22 1972-09-19 John W Shiller Photometric analyzer employing fiber optic light transmitting means
FR2297416A1 (en) * 1975-01-07 1976-08-06 Anvar Analytical determn. of luminescence of solids - using filter and movable heater, in material structure study, archaeology, geology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020206944A1 (en) 2020-06-03 2021-12-09 Vega Grieshaber Kg ELECTRONIC CUP WITH INTEGRATED BASE CONTACTS

Also Published As

Publication number Publication date
EP2141729B1 (en) 2018-08-29
CN101620973B (en) 2014-05-14
US20100001172A1 (en) 2010-01-07
CN101620973A (en) 2010-01-06
US7812298B2 (en) 2010-10-12

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