US2320559A - X-ray tube - Google Patents

X-ray tube Download PDF

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Publication number
US2320559A
US2320559A US374582A US37458241A US2320559A US 2320559 A US2320559 A US 2320559A US 374582 A US374582 A US 374582A US 37458241 A US37458241 A US 37458241A US 2320559 A US2320559 A US 2320559A
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United States
Prior art keywords
tube
metal
envelope
heat
ray tube
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Expired - Lifetime
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US374582A
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English (en)
Inventor
Bouwers Albert
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Individual
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Individual
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Publication of US2320559A publication Critical patent/US2320559A/en
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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

Definitions

  • This shield is of such size that it can easily give oil the heat to the surrounding air and its temperature does not rise excessively.
  • the wall of the tube is preferably provided with a metal part surrounding the anode and care is taken that'the anode has a good heatradiating surface and is fastened in such manner that no appreciable conduction of heat to other parts than the metal part of the wall can occur.
  • a t ube of the said 7 type is connected to the metal wall of the housing, filled with an insulated liquid, in such heatconductive manner that the heat is transferred directly to the housing, that is to say without any appreciable conduction by liquid.
  • X-ray apparatus are already known in which the X-ray tube and the high-tension transformer are arranged in a common housing filled with oil and in which the heat. of the anode is carried ofi without the oil serving as conveying means, for example due to the cooler bein led through the wall of the housing. In this case the tube is wholly surrounded by oil and insulated by this liquid from the metal housing connected to earth. Since the anode is connected to the housingthe cathode has to be insulated for the full working voltage of the housing. This precaution also applies to the terminal of the'source of supply to which the cathode is connected and to the current-supply conductors. Because of this the advantage of a symmetrical arrangement has to be abandoned.
  • the tube and the shield do not constitute one separate part of the X-ray tube but the housing, in addition to the X-ray nents, as condensers, transformers, or valves it-is of importance that the tube can be easily "removed from the remainder of the In order to facilitate in this case the replace ment of the tube it may be fastened to the cover oi' the housing so that, together with this cover.
  • the latter or the cover of the housing may be providedw ith r s 15 to a plate I] which constitutes the cover oi a a saddle-shaped part which serves to support the tube, and one or more-metal clips provided which embrace the X-ray tube, clamping it against the saddle-shaped part.
  • 'Ihese metal clips serve in this case also for the conduction or The heat-conductive contact from the wall of the X-ray tube to the wall of the housing, the
  • thermal short-circuit is further promoted by surrounding the tube with an envelope con-- sisting or a suit substance .01 good heat-conductive material, for example lead. -The possible contact-surface or the tube wall with the tube and the metal-clips respectively is thus obtained. The soft material can'be easily forced against the parts with which it is in thus reducing interruptions in the contact surface to.
  • the heat is carried-a'wa'yirom the wall of 'thetube directly to the housing. Thereis no perceptible diiterence in temperature between the tube wall and the housing and, since the whole outer surface oi the latter is available to transier theheat to the surroundings; itundergoesabut 1 slight heating.
  • the insulating liquid serves exclusively as an insulator and does not act as means to'can-y oil the heat from the tube. It consequently remains oooland thus retains its good properties for a much longer time.
  • the conversion of electrical enersyintoheat is principally eiieotedby the x ray Thelossesintransrormersandothercom- Donents are but slight compared heat which is; developed inthe tube anddo not cause 8.
  • 1 is a longitudinal sectbn' and I Fig. 2 is a cross-section oi a'a'X-ray apparatus comprising an x-ray tube. and a device 'ior' increasing the voltage.
  • the x-rsy tube. together with the other components of the apparatus is 75,
  • the cylinder-shaped, lead-covered metal part of the wall 01 the tube tits-into a depression 01 a metalbody l.
  • Metalclipslandlembraoethe X-ray tube clamping it against the saddle-' shaped part I so that 'a good heat conductive connection is obtained between the metal part oi the tubewall and the bodyl.
  • the latter isiastened metal tank 22- and seals the latter hermetically.
  • the tank 22 contains not only the x-ray tube but also two rectifying tubes 8 and I, two condensers ll and II and two heating-current transformers l2 and H.
  • One electrode of the condenser II is connected 'tothe anode a of the x-ray tube andto'the cathode oi the rectifying tube I.
  • trode is connected to-the cathode oi the tube 3 and to a current-simply conductor ll.
  • Oneelectrode of the condenser H isomnected to the anode of th'erectiiying tube l and to the cathode It or the x-ray tube.
  • other electrode is connected totheanode oi'thego tube land to a current-supply conductor II.
  • the condensers and rectiners serve to increase the voltage applied so that the supp y voltage nced'be only P rt of the voltage of the-tube.
  • the current transformer It has a primary 7 winding I which is energized from the exterior with a' low voltage, and two secondary windings II and II which are'insulated for high tension relatively to one another and to the Winding it.
  • the incandescent cathode of the rectifying lotubelisenergizedbythewlndlngl'landthe incandescent cathode oi theimtifying tube I isenergized by thewindingll,
  • the current transformer. II has a primary winding I! which is energisedirom the exterior with a; low voltage, and a secondary 20 p which is insulated ior. high tension relatively" to thewinding
  • An apparatus such as described for a continuous power oi 100 watts may have a total length of 50 cm. (30 cm. without the projecting caps 23 and 24), a height of 25 cm. and a width of 12 cm.
  • Thelead layer 2 surrounding the metal part of the x-ray tube promotes a good heat-conduction between the tube and the body since the soft metal may be easily forced into the irregularities of the surfaces of themetal bodies.
  • the side-walls oi the housing 22 or one at these walls are not of too thick metal they can slightly curve to the exterior in the case of expansion oi the liquid, resulting in a suflicient increaseof volume to permit the expansion of the liquid which is but slight due to the highly moderate heating.
  • an X-ray tube comprising an evacuated envelope, a cathodeand an anode within said envelope, said envelope comprising a metal wall portion electrically insulated from and extending beyond the ends oi the anode and absorbing substantially all of the heat generated thereby, a metal container enclosing the x-ray tube, an insulating fluid in said container and metallic heat transmitting means directly conducting substantially all of the heat absorbed by said wall portion to said container.
  • an x-ray tube comprising an evacuated envelope, a cathode and an anode within said envelope, said envelope comprising a metal wall portion electrically insulated irom and extending beyond the ends oi the anode and absorbing substantially all oi the heat generated thereby, a metal container enclosing the x-ray tube, an insulating fluid in said container, means securing said tube to a wall of said container, said means directly.
  • an X-ray tube comprising an evacuated envelo a cathode and an anode within said envelope, said envelope comprising a metal wall portion electrically insulated from and extending beyond the ends oi. the anode and absorbing substantially all of the heat the X-ray tube, an insulating fluid in said container, means securing said tube toa wall of said container and directly conducting substantially all oi the heat absorbed by said. wall portion to said container, said means comprising a metal-saddle member secured to said container wall and to the metal portion of said envelope a metal container enclosing and a soft metal layer interposed between said saddle member and themetal portion of said envelope.
  • the X-ray tube,.an insulating fluid in said container means securing said tube to a wall of said container and directly conducting substantially all or the heat absorbed by said wall portion to said container, said means comprising a metal saddle member secured to said container wall and tothe metal portion of said envelope and a layer oi lead metal interposed between said saddle member and the metal portion of said envelope.
  • an X-ray tube comprising an evacuated envelope, a cathode and an anode within said envelope, said envelope comprising a metal wall portion electrically insulated' from and extending beyond the'ends of the anode and absorbing substantially all of the heat mit heat expansion of said fluid, said means com prising a concave deformable resilient wall portion of said container.
  • an X-ray tube comprising an evacuated envelope, a cathode and an anode within said envelope, said envelope comprising a metal wall portion electrically insulated from and extending beyond the ends or the anode and absorbing substantially all of the heat generated thereby, a metal container enclosing the X-ray tube, an insulating fluid in said container, meanssecuring said tube to a wall of said container and directly conducting substantially all 0! the heat absorbed by said wall portion to said container, said means comprising a metal saddle member secured to said container velope and a metalclip member embracing the metal portion of said envelope and securing said tube to said saddle member.
  • an X-ray tube comprising an evacuated envelope, a cathode and an anode within said envelope.
  • said envelope comprising a metal wall portion electrically insulated from and extending beyond the ends of the anode and absorbing substantially all of the 'heat generated thereby, a metal container enclosing the X-ray tube, an insulating fluid in said container, means securing said tube to a wall of said container and directly conducting substantially all of the heat absorbed by said wall portion to said container, said meanscomprising a metal saddle member secured to said container wall arid engaging the metal portion of said envelope and a metal clip member embracing the metal portlon of said envelope and securing said tube to said saddle member, and a layer of soft metal surrounding the metal portion of said envelope and in contact with said clip member and said saddle member.
  • portion 01 said'en-.

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  • X-Ray Techniques (AREA)
US374582A 1939-10-06 1941-01-15 X-ray tube Expired - Lifetime US2320559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL95462A NL57780C (nl) 1939-10-06 1939-10-06 Roentgentoestel, waarbij de roentgenbuis met ten minste een deel van de voedingsapparaten is ondergebracht in een met een isoleerende vloeistof gevuld metalen huis

Publications (1)

Publication Number Publication Date
US2320559A true US2320559A (en) 1943-06-01

Family

ID=39706865

Family Applications (1)

Application Number Title Priority Date Filing Date
US374582A Expired - Lifetime US2320559A (en) 1939-10-06 1941-01-15 X-ray tube

Country Status (3)

Country Link
US (1) US2320559A (xx)
FR (1) FR873941A (xx)
NL (1) NL57780C (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454525A (en) * 1946-10-09 1948-11-23 Machlett Lab Inc X-ray apparatus
US2548489A (en) * 1946-12-20 1951-04-10 Ritter Co Inc X-ray apparatus
US3061728A (en) * 1954-03-08 1962-10-30 Schlumberger Well Surv Corp Well logging apparatus
EP0426897A1 (de) * 1989-11-09 1991-05-15 Siemens Aktiengesellschaft Röngenstrahler
US20030099326A1 (en) * 2001-11-27 2003-05-29 Ge Medical Systems Sa Oil expansion compensation method for integrated X-ray generator
US20080187106A1 (en) * 2007-02-07 2008-08-07 Grady John K Grounded rotating anode x-ray tube housing

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454525A (en) * 1946-10-09 1948-11-23 Machlett Lab Inc X-ray apparatus
US2548489A (en) * 1946-12-20 1951-04-10 Ritter Co Inc X-ray apparatus
US3061728A (en) * 1954-03-08 1962-10-30 Schlumberger Well Surv Corp Well logging apparatus
EP0426897A1 (de) * 1989-11-09 1991-05-15 Siemens Aktiengesellschaft Röngenstrahler
US5067146A (en) * 1989-11-09 1991-11-19 Siemens Aktiengesellschaft X-ray radiator
US20030099326A1 (en) * 2001-11-27 2003-05-29 Ge Medical Systems Sa Oil expansion compensation method for integrated X-ray generator
US6814488B2 (en) 2001-11-27 2004-11-09 Ge Medical Systems Global Technology Company, Llc Oil expansion compensation method for integrated X-ray generator
US20080187106A1 (en) * 2007-02-07 2008-08-07 Grady John K Grounded rotating anode x-ray tube housing
US7553080B2 (en) * 2007-02-07 2009-06-30 Grady John K Grounded rotating anode x-ray tube housing

Also Published As

Publication number Publication date
NL57780C (nl) 1946-07-15
FR873941A (fr) 1942-07-23

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