GB1438317A - Rotary-anode x-ray tubes - Google Patents
Rotary-anode x-ray tubesInfo
- Publication number
- GB1438317A GB1438317A GB5896473A GB5896473A GB1438317A GB 1438317 A GB1438317 A GB 1438317A GB 5896473 A GB5896473 A GB 5896473A GB 5896473 A GB5896473 A GB 5896473A GB 1438317 A GB1438317 A GB 1438317A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- members
- coils
- bearing
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000000149 penetrating effect Effects 0.000 abstract 2
- 230000006698 induction Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000000523 sample Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
- H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
- H01J35/101—Arrangements for rotating anodes, e.g. supporting means, means for greasing, means for sealing the axle or means for shielding or protecting the driving
- H01J35/1017—Bearings for rotating anodes
- H01J35/103—Magnetic bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- X-Ray Techniques (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
1438317 Magnetic bearings SIEMENS AG 19 Dec 1973 [21 Dec 1972] 58964/73 Heading F2A [Also in Divisions G3 H2 and H1] A rotary anode X-ray tube is supported mechanically by only bearing 24, additional anode support being provided by magnetic bearing means in a radial direction, the mechanical bearing serving also to conduct current by way of the anode. The magnetic bearing means may additionally give axial support. The bearing in Fig. 1 includes a stack of aligned annular e.m. coils 9 to 15 with a second stack of coils 36 to 42 producing opposed fields, rotor 27 having two hollow cylindrical parts and magnetically conductive annular yoke members 28 to 35. Shaft 25 is axially supported by the mechanical end bearing 24 which with the tensioned disc 7<SP>1</SP> electrically contacts connecting socket 7. Cylinder 71 carries further yoke members 43 to 50 while the drive part 51 on rotor 71 is surrounded by stator winding 52. Electrically connected cylinder 72 protects members 43 to 50 from high anode potentials. Eccentricity is detected by capacitance measurements between probe 60 and cylinder 72 using device 55 which also controls the current to the coils so that rotor 27 is subjected to forces which counteract the eccentricity only for long enough to prevent the rotor hunting about its central position. Shaft 25 length is such that the axial supports is at 103, the intersection between the shaft axis and a perpendicular from target surface 102. To facilitate assembly, the inner cylinder of the rotary part, with its annular members, may be split. Fig. 3 (not shown) includes drive part (51<SP>1</SP>) between anode plate and coil stacks and is preferable for high loads. External stack (80) should be at anode potential in view of the narrower gap between members (81), (82) and 83 to 85) the latter penetrating the envelope. Fig. 4 (not shown) includes mid-way drive part (51<SP>11</SP>). Gap (87<SP>1</SP>) corresponds to gap (87) of Fig. 3. Members (83<SP>1</SP>-85<SP>1</SP>) and (97, 98) are retained by lining (100) rather than penetrating the envelope as in Fig. 3. Ball bearing (104) provides the mechanical support against the flat or concave shaft end. Reference is made to permanent magnets and to e.m. coils fixed to the rotary shaft and employing slip-rings or induction coils.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2262757A DE2262757C3 (en) | 1972-12-21 | 1972-12-21 | X-ray rotating anode storage |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1438317A true GB1438317A (en) | 1976-06-03 |
Family
ID=5865127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5896473A Expired GB1438317A (en) | 1972-12-21 | 1973-12-19 | Rotary-anode x-ray tubes |
Country Status (5)
Country | Link |
---|---|
US (1) | US3878395A (en) |
CH (1) | CH570699A5 (en) |
DE (1) | DE2262757C3 (en) |
FR (1) | FR2211749B1 (en) |
GB (1) | GB1438317A (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2601529C2 (en) * | 1976-01-16 | 1982-04-29 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Magnetic bearing of the rotating shaft of the rotating anode for an X-ray tube |
DE2716079C2 (en) * | 1977-04-12 | 1979-04-05 | Kernforschungsanlage Juelich Gmbh, 5170 Juelich | Rotating anode x-ray tube |
NL7902477A (en) * | 1979-03-30 | 1980-10-02 | Philips Nv | ROENTGEN TUBE WITH A MAGNETICALLY BEARING TURNING ANode. |
NL7903580A (en) * | 1979-05-08 | 1980-11-11 | Philips Nv | TURNAROOD RODGEN TUBE WITH AXIAL MAGNET BEARING AND RADIAL BEARING. |
DE3000357C2 (en) * | 1980-01-07 | 1982-12-30 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar | Mechanical auxiliary bearing for magnetic storage |
DE3004531C2 (en) * | 1980-02-07 | 1983-01-05 | Siemens AG, 1000 Berlin und 8000 München | Rotating anode X-ray tube |
DE3043046A1 (en) * | 1980-11-14 | 1982-07-15 | Siemens AG, 1000 Berlin und 8000 München | TURNING ANODE TUBE TUBES |
DE3043670A1 (en) * | 1980-11-19 | 1982-07-08 | Siemens AG, 1000 Berlin und 8000 München | TURNING ANODE TUBE TUBES |
JPS5819844A (en) * | 1981-07-30 | 1983-02-05 | Toshiba Corp | Rotary anode x ray-tube |
DE3149936A1 (en) * | 1981-12-16 | 1983-06-23 | Siemens AG, 1000 Berlin und 8000 München | TURNING ANODE X-RAY TUBES |
DE3233076A1 (en) * | 1982-09-06 | 1984-03-08 | Siemens AG, 1000 Berlin und 8000 München | Rotating-anode X-ray tube |
FR2545649B1 (en) * | 1983-05-06 | 1985-12-13 | Thomson Csf | RADIOGENIC TUBE WITH ROTATING ANODE |
DE3343886A1 (en) * | 1983-12-05 | 1985-06-13 | Philips Patentverwaltung Gmbh, 2000 Hamburg | TURNING ANODE X-RAY TUBES WITH A SLIDE BEARING |
JPS60164013A (en) * | 1984-02-03 | 1985-08-27 | Toshiba Corp | Magnetic bearing |
FR2581823B1 (en) * | 1985-05-07 | 1987-06-12 | Thomson Cgr | RADIOLOGICAL DEVICE WITH RADIOGENIC TUBE WITH MAGNETIC BEARINGS |
JPS6276246A (en) * | 1985-09-30 | 1987-04-08 | Toshiba Corp | Rotary anode x-ray tube |
DE19931296A1 (en) * | 1999-07-07 | 2001-01-11 | Philips Corp Intellectual Pty | Rotating anode X-ray tube used in a combination with a spiral flute bearing has an axial bearing with a magnetic arrangement having two elements exerting a magnetic force fixed in an axial direction to the anode |
JP2015522908A (en) * | 2012-05-22 | 2015-08-06 | コーニンクレッカ フィリップス エヌ ヴェ | X-ray tube balancing |
US10672585B2 (en) * | 2018-09-28 | 2020-06-02 | Varex Imaging Corporation | Vacuum penetration for magnetic assist bearing |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3502926A (en) * | 1967-03-24 | 1970-03-24 | Hitachi Ltd | Rotating anode x-ray tube with magnetic damper |
NL7307042A (en) * | 1973-05-21 | 1974-11-25 |
-
1972
- 1972-12-21 DE DE2262757A patent/DE2262757C3/en not_active Expired
-
1973
- 1973-09-12 CH CH1304073A patent/CH570699A5/xx not_active IP Right Cessation
- 1973-12-11 US US423665A patent/US3878395A/en not_active Expired - Lifetime
- 1973-12-19 GB GB5896473A patent/GB1438317A/en not_active Expired
- 1973-12-21 FR FR7346085A patent/FR2211749B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2262757B2 (en) | 1978-10-26 |
FR2211749B1 (en) | 1978-02-10 |
US3878395A (en) | 1975-04-15 |
DE2262757C3 (en) | 1979-06-21 |
CH570699A5 (en) | 1975-12-15 |
FR2211749A1 (en) | 1974-07-19 |
DE2262757A1 (en) | 1974-06-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |