EP0430755B1 - Hochspannungsanlage für Röntgenröhre mit in Sekundärkreis integriertem Kühlbehälter - Google Patents

Hochspannungsanlage für Röntgenröhre mit in Sekundärkreis integriertem Kühlbehälter Download PDF

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Publication number
EP0430755B1
EP0430755B1 EP90403252A EP90403252A EP0430755B1 EP 0430755 B1 EP0430755 B1 EP 0430755B1 EP 90403252 A EP90403252 A EP 90403252A EP 90403252 A EP90403252 A EP 90403252A EP 0430755 B1 EP0430755 B1 EP 0430755B1
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EP
European Patent Office
Prior art keywords
chamber
secondary windings
insulating
circuit
magnetic circuit
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Expired - Lifetime
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EP90403252A
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English (en)
French (fr)
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EP0430755A1 (de
Inventor
Hans Jedlitschka
Jacques Sireul
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General Electric CGR SA
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General Electric CGR SA
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/02—Constructional details
    • H05G1/04—Mounting the X-ray tube within a closed housing
    • H05G1/06—X-ray tube and at least part of the power supply apparatus being mounted within the same housing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/02—Constructional details
    • H05G1/025—Means for cooling the X-ray tube or the generator
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/10—Power supply arrangements for feeding the X-ray tube

Definitions

  • the invention relates to electrical devices which are used to power X-ray tubes and, more particularly in such devices, means for supporting and cooling the various elements of electrical circuits.
  • An X-ray tube includes a filament type cathode which emits an electron beam towards an anode or anti-cathode.
  • the anode is made of a material such as tungsten or molybdenum which emits X-rays when it is bombarded by the electron beam from the cathode.
  • the electrons are accelerated by an intense electric field created between the cathode and the anode.
  • the anode is brought to a positive potential of several tens of kilovolts relative to the cathode, this potential being able to exceed one hundred kilovolts and reach one hundred and forty kilovolts.
  • Such voltages are supplied by so-called high voltage power supply devices which include, as shown in FIG. 1, a transformer 10 which is connected to voltage rectifier-doubler circuits 11. More specifically, the transformer 10 comprises a single winding primary 12 to which an alternating voltage is applied and a secondary circuit 13 which is connected to the rectifier-doubling circuits 11.
  • Each rectifier-doubling circuit 11 consists, in a conventional manner, in a secondary winding 14, two diodes D1 and D2 and two capacitors C1 and C2 which are connected together according to the diagram in Figure 1.
  • Each voltage rectifier-doubler circuit is connected to the next one so that their output voltages add up, which makes it possible to obtain a very high voltage on the last doubler circuit of the assembly .
  • the transformer comprises a primary winding 12 and twelve secondary windings S1 to S12 which have been shown as the windings S1, S5, S6 and S12.
  • the transformer comprises twenty-four identical rectifying diodes D1 to D24 of which it has been shown that the elements D1, D2, D3 ... D12, D13, D14 ... D22, D23, D24.
  • Each secondary winding S1 to S12 has two output terminals. All the output terminals bear the references B1 to B24, only the terminals B1, B2, B3 ... B5, B6, B7, B8 ... B23, B24 having been represented.
  • the common point of the capacitor C1 and the diode D1 constitutes the high voltage output terminal HT through a resistor R while the common point of the capacitor C24 and the diode D24 constitutes the ground output terminal with which a spark gap 9 is associated.
  • the HT output terminal is connected to a measuring device (not shown) connected to point M via a resistor R ′ and a variable capacitor C ′.
  • the point M is connected to earth by a spark gap 9 ′.
  • each rectifier-doubler circuit has an output voltage of six kilovolts so that at the output of the twelfth rectifier-doubler circuit, the voltage is seventy-two kilovolts.
  • X-ray tubes are used more and more in impulse mode according to increasingly higher repetition frequencies.
  • the performance of the circuit of FIG. 1 is limited by the parasitic capacities and inductors of the conductors and the windings of the transformer, the values of which are difficult to know and to compensate for.
  • a high voltage supply device for an X-ray tube comprising a volume comprising a transformer which comprises at least one primary winding, a plurality of secondary windings and a magnetic circuit, the two output terminals of each of said secondary windings being connected to a voltage rectifier-doubler circuit which consists of two diodes and two filter capacitors, said rectifier-doubler circuits being connected together so that their output voltages add up, and a closed enclosure enclosing said volume in an insulating and refrigerating medium.
  • the secondary circuit in the form of concentric windings, only the parasitic capacitance between the first secondary winding and the mass has an influence because the other parasitic capacitances between the secondary windings between them do not intervene because they are at an alternating voltage.
  • the invention described in the aforementioned patent application first provides for making secondary windings whose similar output terminals of odd rank B1, B3 ... B23, are arranged on a first lateral side of the windings while the output terminals of even rank B2, B4 ... B24 are arranged on the other or second lateral side of the secondary windings.
  • the device comprises two half-shells 20 and 21 in which are provided housings for placing the primary winding 12, the secondary windings S1 to S12, the capacitors C1 to C24 and the diodes D1 to D24.
  • each half-shell 20 (or 21) comprises three annular compartments 22, 23 and 24 (or 26, 27, 28) around a cylindrical central part 25 (or 29).
  • the first annular compartment 22 (or 26) is at the periphery of the central part 25 (or 29) while the second annular compartment 23 (or 27) is at the external periphery of the first compartment 22 (or 26).
  • the third compartment 24 (or 29) is arranged laterally with respect to the first two 22 and 23 (or 26 and 27) and is separated from it by partitions 30 and 31 respectively (or 32 and 33) pierced with orifices.
  • the central parts 25 and 29 are provided for housing, in particular, the primary winding 12 and a branch 34 of the magnetic circuit 35 of the transformer 10.
  • the first annular compartments 22 and 26 are provided for housing the secondary windings 13 which are wound so concentric on a mandrel 36.
  • the external periphery of the mandrel 36 is closed by a cover constituted by a cylindrical ring 37.
  • the mandrel 36 and its cover 37 fit into compartments 22 and 26.
  • the second annular compartments 23 and 27 comprise twenty-four cells A1, A2, A3 ... A14, A15, A16..A24 which are designed to house the twenty-four capacitors C1 respectively to C24.
  • the third compartment 24 of the half-shell 20 is provided for housing the diodes D1 to D24 and making their connections to one another, with the capacitors C1 to C24 and to certain output terminals of the secondary windings S1 to S12. This arrangement will be described below in relation to FIG. 4.
  • the third compartment 28 of the half-shell 21 is provided for making the various connections between certain output terminals of the secondary windings S1 to S12 and the capacitors C1 to C24 as will be described below in relation to FIG. 5.
  • Each annular compartment 24 or 28 is closed respectively by an annular cover 40 or 41 which comes to fit on the outer periphery of the associated compartment.
  • each half-shell 20 (or 21) has its periphery interrupted by a notch 42 (or 43) and it is the same for each cover 40 (or 41).
  • a notch allows the passage of a branch of said magnetic circuit.
  • the diodes D1 to D24 are arranged on a printed circuit in the form of an annular wafer sector which makes their connections with one another, with one end of the capacitors C1 to C24 and with the output terminals B1, B3. ..B23 in accordance with the electric diagram of FIG. 1.
  • the diode D1 has its cathode which is connected to the terminal B1 of the winding S1 and its anode which is connected to a of the ends of the capacitor C1.
  • terminal B1 is connected to the anode of diode D2, the cathode of which is connected, on the one hand, to the anode of diode D3 and, on the other hand, at one end of the capacitors C2 and C3, and to the latter by a printed conductor CI1.
  • the other printed conductors CI2 to CI11 connect the other common points of the diodes equivalent to D2, D3 to the capacitors equivalent to C3.
  • Figure 5 is a top view, cover 41 partially broken away, on the other side of the secondary windings.
  • connection conductors CC5 to CC10 between the terminals B6, B8, and B10 and the associated capacitors (C5, C6), (C7, C8) and (C9, C10).
  • these conductors CC5 to CC10 can be produced in the form of conductors of a printed circuit analogous to the printed circuit 38 carrying the diodes or in the form of bars.
  • FIG. 5 also shows three of the four branches of the magnetic circuit 35, one of which is disposed in the notch 43.
  • the various elements which have just been described in relation to FIGS. 1 to 5 are assembled by interlocking into each other and held together with each other by assembly elements so as to obtain the assembly shown in partial section. in FIG. 6.
  • the assembly elements, not shown in FIGS. 1 to 5, consist of threaded tie rods and nuts and plates for supporting and holding the various branches of the magnetic circuit 35.
  • plates 55 and 56 (FIG. 6) these plates being held respectively against the covers 41 and 40 by threaded tie rods and nuts such as those bearing the references 57, 58 and 59 in FIGS. 2 and 6.
  • These plates 55 and 56 are provided to each house and hold a branch of the magnetic circuit.
  • the plate 55 supports the branch 60 of the U-shaped part while the plate 56 supports the branch 46 of the magnetic circuit which closes the opening of the U.
  • the device of FIG. 6 is placed in an enclosure 61 (FIG. 7) filled with an insulating cooling fluid.
  • a support plate 62 which constitutes the cover of the enclosure 61.
  • the mounting on the support plate 62 is carried out by means of two feet 63 and 64 which cooperate with the plates holding 55 and 56 by fitting into housings (not shown) provided inside. These feet 63 and 64 are pierced with holes, such as that referenced 65, for the passage of screws (not shown) which are screwed into a thread in the cover 62.
  • the cover 62 also supports an insulating pad 66 which supports the high voltage output terminal of the supply device.
  • the other electrical terminals of the supply device have not been shown in this figure 7.
  • the enclosure 61 must be large enough to contain a large volume of coolant, approximately 15 to 20 liters, which volume leads to a high-voltage block assembly. quite bulky.
  • the object of the present invention is therefore to produce a supply device for an X-ray tube of the type described in the aforementioned patent application, in which the enclosure containing the coolant is of reduced dimensions so as to obtain an assembly more compact and lighter.
  • the subject of the invention is a high-voltage supply device for an X-ray tube as defined in claim 1.
  • This closed enclosure is produced using two half-shells which have cells to set up and maintain the various elements of the secondary circuit as well as other elements which are connected to high voltages such as the transformer (s) of the supply circuit for the cathode filament (s).
  • Each half-shell has opposite two tunnels which pass right through them and which serve as support, on the inside of the enclosure, for the secondary windings and, on the outside of the enclosure, for the primary winding and magnetic circuit.
  • FIGS. 1 to 7 which have been used in the preamble to describe a high voltage supply device for x-ray tubes according to the prior art, will not be described again, but they nevertheless form an integral part of the description of the invention.
  • the invention with the exception of FIG. 7, with regard to the particular arrangement of the electrical and magnetic elements and of the transformer voltage doubler circuits.
  • Figure 8 identical or similar to those of Figures 1 to 6 have the same references.
  • the two half-shells 20 and 21 of the embodiment of Figures 2 to 6 have been combined into a single shell which has been referenced (20, 21) in Figure 8.
  • the invention is based on the observation that the energy dissipated in a feeder for an X-ray tube is due for about a first third to the primary circuit, about a second third to the circuit secondary and about a third to the magnetic circuit but that the insulation problems due to high voltage only exist for the elements of the secondary circuit. For this reason, it is necessary to use a cooling medium which is also a very good insulator, a quality which is not required to isolate the elements of the primary and magnetic circuits which can therefore remain in the open air.
  • the invention relates to a feed device for an X-ray tube in which only the elements of the secondary circuit are arranged in a tank 80 filled with a cooling and insulating medium, the tank being shaped to serve as a support inside. elements of the secondary circuit and outside the support of the elements of the primary and magnetic circuits.
  • the tank 80 comprises two half-shell parts 81 and 81 ′ which are assembled together using tie rods (not shown) passing through holes, such as those referenced 82 and 82 ′, drilled respectively in the thickness of the half-shells 81 and 81 ′.
  • a seal is provided to seal the tank after assembly of the two half-shells.
  • the interior of each half-shell 81 and 81 ′ is shaped in substantially the same way to serve as a mounting support for a certain number of elements, in particular those of the secondary circuit.
  • each half-shell 81 or 81 ′ has a bottom wall 83 or 83 ′ and side walls 84 or 84 ′, 85 or 85 ′, 86 or 86 ′, 87 or 87 ′.
  • Each bottom wall 83 or 83 ′ is pierced, substantially in the middle, with a hole 88 or 88 ′, to produce a tunnel 89 or 89 ′ which passes through each half-shell 81 or 81 ′.
  • Circular ends inside the tunnels 89, 89 ′ abut one on the other during the assembly of the two half-shells by means of a seal not shown.
  • Each half-shell has a notch 90 or 90 ′ in the shape of a letter L, the vertical arm of which is located on the bottom wall 83 or 83 ′ while the horizontal arm is situated on the side wall of 87 or 87 ′.
  • the vertical arm has a depth less than that of the thickness of the half-shell and the horizontal arm has a depth less than the distance from the tunnel to the side wall 87 or 87 ′.
  • each half-shell has cells to allow the establishment and maintenance of the elements of the secondary circuit as well as other elements.
  • a first cell 91 or 91 ′ is provided around the tunnel 89 or 89 ′ for the support and the maintenance of the secondary windings 13 and of the shell (20, 21) containing the capacitors, the diodes and the circuits of connection between these different elements carried by printed circuits in the shape of a horseshoe such as the shell (20, 21).
  • a second cell 92, arranged in the half-shell 81 and a third cell 92 ′, arranged in the half-shell 81 ′, are used to set up, respectively, the high-voltage connectors 93 and 93 ′.
  • These connectors 93 and 93 ′ are each produced in a conventional manner, by a sleeve, one closed end of which carries the connection pads located in the cell near the output terminal of the secondary winding, and the open end of which serves to passage of the output conductors via a male connector not shown in FIG. 8.
  • the sleeve is hermetically sealed in a orifice in the side wall 85 or 85 ′ using a gasket 94 or 94 ′ and a plate 95 or 95 ′ screwed to the side wall.
  • a fourth cell 96 arranged in the shell 81, allows the establishment of a vase 97 filled with air to absorb the expansions of the insulating and cooling medium.
  • the interior of this expansion vessel communicates with the exterior of the tank by a conduit 98.
  • a fifth cell 96 ′ disposed in the half-shell 81 ′, allows the installation of an electrical circuit 99 for measuring voltage.
  • This electrical circuit 99 consists, as indicated in relation to the description of FIG. 1, of a resistor R ′ and of a variable capacitor C ′ in parallel and of a spark gap 9 ′.
  • a sixth cell 100 in the half-shell 81 and a seventh cell 100 ′ in the half-shell 81 ′ are provided for positioning and maintaining the transformers 101 and 101 ′ of the filament supply circuits of the cathode of the tube, respectively. X-ray.
  • the different cells which have just been described are separated by walls, such as that referenced 102, whose shapes match those of the elements which they must maintain. These walls are pierced with orifices such as that referenced 103 ′ in the wall 102 ′ to allow the flow of coolant.
  • two orifices 104 and 104 ′ are provided, drilled respectively in the side walls 85 and 85 ′ and provided with plugs 105 and 105 ′.
  • the latter After mounting and wiring the various elements of the secondary circuit in the half-shells 81 and 81 ′, the latter are assembled to one another so as to produce a sealed tank on which the various elements of the primary circuit and the magnetic circuit.
  • the primary winding 12 is disposed inside the tunnel 89, 89 ′, that is to say on the side outside the enclosure 80, while the branch 34 of the magnetic circuit 35 passes through the tunnel 89, 89 ′ Inside the primary winding 12.
  • the branch 60 is placed in the vertical part of the notch 90 and the branch 44 in the horizontal part of said notch.
  • the fourth branch 46 is placed in the vertical part of the notch 90 ′ at the ends of the branches 34 and 44.
  • the primary winding can be supported by the magnetic circuit itself.
  • plates such as that referenced 106, associated with the half-shell 81, which are fixed to the bottom walls 83 and 83 ′. These plates serve as support for connection pads 107 of the primary winding.
  • the plate 106 can also serve as a support for a fan 108 or a pump for cooling the primary winding and the magnetic circuit by effecting a forced and rapid flow of air or a refrigerant fluid such as a gas inside the tunnel (89, 89 ′).
  • the two half-shells 81 and 81 ′ of the enclosure 80 are made of an insulating material made of plastic, for example.
  • the outer wall of each half-shell 81 and 81 ′ is coated with a metal casing or a conductive layer which is produced so as not to short-circuit the secondary winding disposed inside the half-shells.
  • the metallic envelope or the conductive layer are connected to the ground potential.
  • the insulating and cooling fluid with which the enclosure 80 is filled can be produced by an insulating and curable resin which, in combination with the two half-shells 81 and 81 ′, forms the encapsulation mold for the elements which they contain. By operating in this way, it is not necessary to use, during manufacture, an encapsulation mold whose assembly and disassembly are long.
  • the invention has been described in relation to a particular embodiment in which only the enclosure 80 was filled with an insulating and cooling liquid, the outside of the enclosure being in the open air. However, nothing prevents the enclosure 80 and the elements that it supports from being placed in a tank, similar to tank 61 in FIG. 7, which would be filled with a refrigerant. Such an arrangement applies as well to the case of an enclosure 80 filled with an insulating and cooling liquid with or without circulation of said liquid as to that of an enclosure 80 filled with a resin as indicated above.

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  • X-Ray Techniques (AREA)

Claims (23)

  1. Vorrichtung zur Versorgung einer Röntgenröhre mit Hochspannung, mit einem Raum (20, 21), der einen Transformator enthält, der wenigstens eine Primärwicklung (12), eine Vielzahl von Sekundärwicklungen (S1-S12) und einen magnetischen Kreis (35) aufweist, wobei die beiden Ausgangsanschlüsse (B1-B24) einer jeden Sekundärwicklung mit einem Gleichricht-Spannungsverdopplungskreis verbunden sind, der aus zwei Dioden (D1-D24) und aus zwei Filterkondensatoren (C1-C24) besteht, während die Gleichricht-Spannungsverdopplungskreise miteinander derart verbunden sind, daß sich ihre Ausgangsspannungen addieren, und mit einer geschlossenen Hülle (80), die den Raum in einer isolierenden und kühlenden Umgebung umgibt, dadurch gekennzeichnet, daß in dem Raum die Sekundärwicklungen auf konzentrischen Spulen angeordnet sind und daß ihre Ausgangsanschlüsse auf den Seitenflächen der Spulen verteilt sind, daß die Kondensatoren entlang des Außenumfangs der Spulen und die Dioden auf einer Seitenfläche der Spulen angeordnet sind und daß die Primärwicklung, die auf einer Spule konzentrisch zu den Sekundärwicklungen angeordnet ist und der magnetische Kreis außerhalb der Hülle angeordnet sind.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Hülle außerdem wenigstens einen Transformator (101, 101′) umgibt zur Versorgung einer Kathodenwendel der Röntgenröhre.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Hülle außerdem ein Ausdehnungsgefäß (97) für die Kühlflüssigkeit umgibt.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Hülle außerdem einen elektrischen Kreis (99) zur Messung der Hochspannung umgibt.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Hülle außerdem Hochspannungsanschlüsse (93, 93′) umgibt, die mittels Öffnungen, die in die Seitenwände gebohrt sind, eingesetzt werden.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Hülle aus zwei Halbschalen (81, 81′) besteht, welche Aussparungen aufweisen, in welche die Sekundärwicklungen eingesetzt und gehalten werden.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die die Aussparungen aufweisende Wand an die Formen der Bauteile angepaßt sind, welche sie aufnehmen und Öffnungen (103′) aufweisen, als Durchlaß für eine kühlende und isolierende Flüssigkeit.
  8. Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß der zentrale Abschnitt einer jeden Halbschale einen Tunnel (89, 89′) aufweist, der ihn vollständig durchsetzt und als Halterung für die Sekundärwicklungen im Inneren der Hülle dient, sowie als Halterung für die Primärwicklung außerhalb der Hülle.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß der Tunnel von einem Teil (34) des magnetischen Kreises durchsetzt wird.
  10. Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, daß jede Halbschale auf Höhe des Tunnels Aussparungen zum Einsetzen und Halten der anderen Teile (44, 46, 60) des magnetischen Kreises aufweist.
  11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die verschiedenen Teile des magnetischen Kreises untereinander und an den Halbschalen mittels Platten (106) gehalten werden, die an ihren Wänden befestigt sind, wobei die Platten Verbindungsstifte für die Primärwicklung tragen.
  12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß wenigstens eine der Platten eine Pumpe zur Zirkulation eines Kühlfluids im Tunnel aufweist.
  13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß die Pumpe ein Ventilator (108) ist, wenn das Kühlfluid Luft ist.
  14. Vorrichtung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß die Hülle aus einem isolierenden Material besteht.
  15. Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß das isolierende Material ein Kunststoff ist.
  16. Vorrichtung nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß die Hülle mit einer metallischen Beschichtung versehen ist als elektrischer Schutz, ohne die Sekundärwicklungen kurzzuschließen.
  17. Vorrichtung nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß die Hülle mit einer leitenden Beschichtung versehen ist als elektrischer Schutz, ohne die Sekundärwicklungen kurzzuschließen.
  18. Vorrichtung nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die isolierende und kühlende Umgebung in der Hülle ein Fluid ist.
  19. Vorrichtung nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die isolierende und kühlende Umgebung in der Hülle ein aushärtbarer Kunststoff ist.
  20. Vorrichtung nach Anspruch 18 oder 19, dadurch gekennzeichnet, daß sie in einem mit einem Kühlfluid gefüllten Behälter (61) angeordnet ist.
  21. Vorrichtung nach Anspruch 20, dadurch gekennzeichnet, daß das Kühlfluid im Behälter unterschiedlich ist zu der isolierenden und kühlenden Umgebung in der Hülle.
  22. Vorrichtung nach einem der Ansprüche 1 bis 21, dadurch gekennzeichnet, daß sie außerdem eine Anordnung aufweist, um das isolierende und kühlende Fluid in der Hülle zirkulieren und kühlen zu lassen.
  23. Vorrichtung nach einem der Ansprüche 20 bis 22, dadurch gekennzeichnet, daß sie außerdem eine Anordnung aufweist, um das in dem die Hülle aufweisenden Behälter enthaltene Kühlfluid zirkulieren und kühlen zu lassen.
EP90403252A 1989-11-24 1990-11-16 Hochspannungsanlage für Röntgenröhre mit in Sekundärkreis integriertem Kühlbehälter Expired - Lifetime EP0430755B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8915509A FR2655231B1 (fr) 1989-11-24 1989-11-24 Bloc haute tension pour tube a rayons x avec cuve de refroidissement integree au circuit secondaire.
FR8915509 1989-11-24

Publications (2)

Publication Number Publication Date
EP0430755A1 EP0430755A1 (de) 1991-06-05
EP0430755B1 true EP0430755B1 (de) 1994-10-05

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EP90403252A Expired - Lifetime EP0430755B1 (de) 1989-11-24 1990-11-16 Hochspannungsanlage für Röntgenröhre mit in Sekundärkreis integriertem Kühlbehälter

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US (1) US5060253A (de)
EP (1) EP0430755B1 (de)
DE (1) DE69013123T2 (de)
FR (1) FR2655231B1 (de)

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FR2672726B1 (fr) * 1991-02-08 1996-09-13 Gen Electric Cgr Commutateur haute tension a mouvement lineaire.
FR2672727B1 (fr) * 1991-02-08 1993-04-16 Gen Electric Cgr Dispositif interrupteur haute tension et commutateur haute tension.
FR2680939B1 (fr) * 1991-09-03 1993-11-26 General Electric Cgr Sa Dispositif et bloc d'alimentation haute tension pour tube a rayons x.
FR2680938B1 (fr) * 1991-09-03 1993-11-26 General Electric Cgr Sa Bloc radiogene avec dispositif d'alimentation haute tension integre dans la gaine.
JPH05176540A (ja) * 1991-12-25 1993-07-13 Toshiba Corp 高電圧発生装置
US5231564A (en) * 1992-03-30 1993-07-27 Lorad Corporation Power supply for producing excitation voltage for an x-ray tube filament
US5335161A (en) * 1992-03-30 1994-08-02 Lorad Corporation High voltage multipliers and filament transformers for portable X-ray inspection units
FR2700657B1 (fr) * 1993-01-15 1995-02-17 Gen Electric Cgr Ensemble radiogène.
FR2769787B1 (fr) * 1997-10-09 1999-12-24 Ge Medical Syst Sa Support modulaire pour les elements fonctionnels d'un bloc d'alimentation haute-tension et bloc ainsi obtenu
TWI287950B (en) * 2003-11-28 2007-10-01 Kobe Steel Ltd High-voltage generator and accelerator using same
DK1887840T3 (da) * 2006-08-08 2009-09-21 Bosello High Technology S R L Röntgenapparat og tilknyttet spændingsgenerator
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EP3102007B1 (de) * 2014-01-28 2019-01-09 Sociedad Española De Electromedicina Y Calidad, S. A. Hochspannungs-, hochfrequenz-, hochleistungstransformator
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US5060253A (en) 1991-10-22
FR2655231B1 (fr) 1992-02-14
FR2655231A1 (fr) 1991-05-31
DE69013123D1 (de) 1994-11-10
EP0430755A1 (de) 1991-06-05
DE69013123T2 (de) 1995-05-04

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