CN109192644A - A kind of internal cooling ball bearing medical X-ray tube - Google Patents
A kind of internal cooling ball bearing medical X-ray tube Download PDFInfo
- Publication number
- CN109192644A CN109192644A CN201810825060.5A CN201810825060A CN109192644A CN 109192644 A CN109192644 A CN 109192644A CN 201810825060 A CN201810825060 A CN 201810825060A CN 109192644 A CN109192644 A CN 109192644A
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- Prior art keywords
- bearing
- target disc
- rotor
- ray tube
- hollow
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Classifications
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- 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
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- 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
- H01J35/105—Cooling of rotating anodes, e.g. heat emitting layers or structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
- H01J35/26—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by rotation of the anode or anticathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2235/00—X-ray tubes
- H01J2235/10—Drive means for anode (target) substrate
- H01J2235/1046—Bearings and bearing contact surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2235/00—X-ray tubes
- H01J2235/12—Cooling
- H01J2235/1204—Cooling of the anode
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- X-Ray Techniques (AREA)
Abstract
The invention discloses a kind of internal cooling ball bearing medical X-ray tubes, belong to medical detection and ray metering detection technique field, including target disc, support ring, rotor molybdenum bar, rotor copper sheathing, rotor iron seat, anode corrugations ceramics and hollow bearing.The present invention gives the cooling ball bearing medical X-ray tubes in the inside of a kind of hollow target disc of combination, hollow bearing system, anode corrugations ceramic structure and new target disc fixed form, to realize the solution of the big thermal capacity X-ray tube of 5MHU or more；Wherein, the structure design of hollow target disc, the heat of target disc are directly conducted heat on rotor copper sheathing by cavity；The design of hollow shaft sleeve, cooling oil can direct cool to inside axle sleeve；The design of anode corrugations ceramics, the heat of rotor copper sheathing is radiation-curable on anode ripple ceramic, then through anode corrugations ceramic conductive into cooling oil；The design of new anode disc fixed form, improves the reliability of high-speed rotation.
Description
Technical field
The invention belongs to medical detections and ray to measure detection technique field, in particular to a kind of internal cooling ball bearing
Medical X-ray tube.
Background technique
X-ray tube is mainly used on the Medical Devices such as X-ray production apparatus, CT machine, in the case where applying external high pressure effect, generates X and penetrates
Line is diagnosed or is treated to patient for doctor.
X-ray tube generates the mechanism of X-ray approximately as: the filament (cathode) of X-ray tube in a heated state, freely
Electronics escapes filament surface, forms electron cloud.Apply (generally 40 ~ 150 under high-voltage case between X-ray tube cathode, anode
Kilovolt), the electronics high speed at filament is flown to target disc (anode), generates X-ray after hitting anode disc, and defeated by ray window
Effective X-ray out.It has been observed that only 1% electronic kinetic energy is converted into X-ray in this energy conversion process, residue 99% is moved
It can be converted into thermal energy, by heat radiation or heat transfer, reached outside X-ray tube, by X-ray tube pipe sleeve and X-ray tube radiator band
It walks.Specifically, comprising: (1) heat (account for total amount of heat 90%) a part of target disc is radiated the metal-back in the middle part of X-ray tube
On, another part is radiated outside X-ray tube through both ends glass bulb or other materials, and last part is taken away by rotor copper sheathing.
The heat maximum for being wherein radiated metal-back accounts for about 60%, through the heat about 20% of glass radiation, is taken away by rotor copper sheathing
Heat about 20%.(2) heat (accounting for total amount of heat 10%) of cathode is taken away by cathode glass and metal-back.
In use, X-ray tube only has 1% energy to be converted into X-ray, remaining 99% is converted into thermal energy, it is necessary into
Row rapid cooling.Therefore, the thermal management of X-ray tube is to influence one of its reliability and the key factor in service life.
As shown in figure 5, under prior art, since the temperature at work of target disc can reach 1000 degree or more, heat
The temperature of amount conduction to ball bearing shaft has 500 degree or more, and shaft can only be transferred heat in insulating oil by axle sleeve, cause to dissipate
The thermal efficiency is very low.
In the prior art, X-ray tube has the drawback that in radiation processes
1, anode thermal capacity is limited；
2, bearing material is required high；
3, bearing life is limited；
4, in target disc high-speed rotation, fixed positional shift and the risk height that falls off occurs.
The reason of leading to conclusions, is as follows:
1, in existing X-ray tube design, high pressure generator anode is connected by the screw thread on ball bearing with target disc, structure limit
The radiating efficiency of ball bearing is made；Meanwhile target disc can reach 1100 degree of high temperature when working, heat is conducted by molybdenum rod to iron
Seat, then shaft is arrived, it is then conducted again by ball to bearing outer ring, outer ring is conducted to axle sleeve, is taken away by insulating oil.It can be seen that
The path of heat conducting and radiating is very long.And constraints above condition, cause anode thermal capacity that can only accomplish 3.5MHU and hereinafter, discomfort
Close the X-ray tube of the big thermal capacity of 5MHU or more；
2, in existing X-ray tube design, the heat of target disc is conducted to shaft, but the maximum operating temperature that shaft allows is not higher than
550 degree, so the material that manufacture shaft ring flange generally uses pyroconductivity extremely low, so bearing mnanufacture cost is very high；
3, since shaft long-term work is at 500 degree or so, this requires the operating temperature of bearing outer ring cannot be below 350 degree (note:
This kind of centripetal thrust force airframe bearing internal-external temperature difference does not allow more than 150 degree, and otherwise bearing internal external raceway is easily-deformable causes
Axis), and often the temperature of bearing outer ring can only meet most basic temperature requirement (maintaining 350 ° or so), lead to bearing life
Decline；
4, in existing X-ray tube design, target disc fixed form is that single thread fixed form specific structure is shown in Fig. 1, due to anode target
Revolving speed reaches 10800 RPM to disk at work, which results under high speed operation state screw thread be possible to loosen, it is current
Solution is: (1) target disc and rotor copper sheathing are fixed using single thread, subsequent using 1600 DEG C of high-temperature solder welding, the program
It is with high costs, electron beam welding equipment need to be put into；(2) target disc and rotor copper sheathing are fixed using molybdenum nut, molybdenum nut and rotor copper sheathing
Using machine riveting, program poor reliability, target disc falls off when being easy to cause high speed rotation, there is security risk；(3) target disc and
Rotor copper sheathing is fixed using molybdenum nut, is connected between molybdenum nut and rotor copper sheathing by tantalum gasket, which increase cost and
Loosening is had when high speed rotation, influences picture quality.
Summary of the invention
Goal of the invention: in order to overcome the above deficiency, the object of the present invention is to provide a kind of internal cooling ball bearing medical Xs
Ray tube solves the problems, such as X-ray tube heat dissipation.
Technical solution: a kind of internal cooling ball bearing medical X-ray tube, including target disc, support ring, rotor molybdenum bar, turn
Sub- copper sheathing, rotor iron seat, anode corrugations ceramics and hollow bearing, the target disc are connect with support ring, the support ring and rotor
Molybdenum bar connection, the rotor molybdenum bar are connect with rotor iron seat, and the rotor copper sheathing is set on the outer wall of rotor iron seat, the sun
Pole ripple ceramic is set in the outside of rotor copper sheathing, and the hollow bearing is arranged in rotor molybdenum bar and rotor iron seat.The present invention
Give the inside of a kind of hollow target disc of combination, hollow bearing system, anode corrugations ceramic structure and new target disc fixed form
Cooling ball bearing medical X-ray tube, to realize the solution of the big thermal capacity X-ray tube of 5MHU or more；Wherein, hollow target
The structure of disk designs, and the heat of target disc is directly conducted heat on rotor copper sheathing by cavity；The design of hollow shaft sleeve, it is cooling
Oil can direct cool to inside axle sleeve；The design of anode corrugations ceramics, the heat of rotor copper sheathing are radiation-curable to anode ripple ceramic
On, then through anode corrugations ceramic conductive into cooling oil；The design of new anode disc fixed form, improves high speed rotation
The reliability of process.
Further, the cooling ball bearing medical X-ray tube in above-mentioned inside, the target disc includes target disc graphite and TZM
It is hollow structure inside the target disc graphite and TZM and rhenium tungsten layer, the TZM and rhenium tungsten layer are set to target disc with rhenium tungsten layer
On the left side of graphite, the left side of the support ring is bonded with the right side of TZM and rhenium tungsten layer, and the left part of support ring
It is placed in the internal cavities of target disc graphite.TZM, graphite and support ring are connected by high-temperature soldering mode, and support ring passes through screw
It is connected with rotor, such target disc heat can only conduct heat to rotor when not considering radiation by support ring, and bearing will not
The high temperature for directly bearing target disc, can effectively improve bearing reliability.
Further, the cooling ball bearing medical X-ray tube in above-mentioned inside, the hollow bearing include hollow shaft sleeve,
On bearing outer ring, among bearing under ring, bearing outer ring and shaft, one end of the shaft be arranged in hollow shaft sleeve, the axis
It is arranged between the outer wall of shaft and the inner wall of hollow shaft sleeve under ring and bearing outer ring on bearing outer-ring, among bearing, the bearing
The setting of intermediate ring is on bearing outer ring and between under bearing outer ring, among the bearing under ring and bearing outer ring between be equipped with transition
Ring., the heat of target disc is less conducted to shaft, then is conducted to axle sleeve, takes away heat by cooling oil, bearing can be improved
Reliability.
Further, above-mentioned inside cools down ball bearing medical X-ray tube, the one of separate shaft in the hollow bearing
End is equipped with cavity.The cavity inside of setting can enter coolant liquid, improve thermal diffusivity.
Further, the cooling ball bearing medical X-ray tube in above-mentioned inside, the shaft are equipped with close to the end of target disc
Bearing flange.Hollow bearing is connect by setting bearing flange with rotor molybdenum bar.
Further, above-mentioned inside cools down ball bearing medical X-ray tube, sets on the outer wall of the anode corrugations ceramics
There is one group of ceramics ripple.Increase anode ceramic watch area, improve the heat-sinking capability of anode ceramics, rotor copper sheathing is radiated to anode pottery
The heat of porcelain can run through anode corrugations ceramic conductive into cooling oil, and heat a part of such target disc passes through metal-back
Conduction is into cooling oil, and a part passes through anode ceramic conductive into cooling oil, as long as such bearing solves itself at work
Fever.
Further, the cooling ball bearing medical X-ray tube in above-mentioned inside, the close target disc of the anode corrugations ceramics
End be equipped with anode and can cut down greatly, the anode corrugations ceramics are equipped with that anode is small cuts down far from the end of target disc.Anode can be cut down greatly
It being connect with small cut down of anode with anode corrugations ceramic end soldering and sealing, ripple ceramic and end seal structure may insure the concentricity of homogeneous tube,
The mechanical stress between insulating materials and metal is reduced, mechanical strength is enhanced.
Further, the cooling ball bearing medical X-ray tube in above-mentioned inside, the target disc and support ring and rotor copper sheathing
Between pass through the connection of 3-6 screw.
Further, the cooling ball bearing medical X-ray tube in above-mentioned inside, between the rotor copper sheathing and hollow bearing
It is fixed by 6-12 screw.
Further, the cooling ball bearing medical X-ray tube in above-mentioned inside, the screw are stainless steel material by melting
Melting point solid welding is fixed.It is designed using new anode disc fixed form, is fixed by more screws, can improved single in the prior art
One screw fixation method is wherein fixed between target disc and support ring and rotor copper sheathing using 3-6 screw, rotor copper sheathing and hollow
It is fixed between bearing using 6-12 screw, spot welding is melted using argon arc welding, do not need the height that any other technique realizes target disc
Speed rotation 10800rpm, reliability are high.
Above-mentioned technical proposal can be seen that the invention has the following beneficial effects: internal cooling balls of the present invention
Bearing medical X-ray tube, has the advantages that
1, the reliability that X-ray tube works under high speed rotation state is improved: due to using 6 screws of support ring and rotor copper sheathing
Connection and bearing are connected with 6 screws of rotor copper sheathing, avoid single fixed form, reduce the pine of target disc when rotating at high speed
Dynamic risk；
2, improve bearing service life and product reliability: target disc heat of the present invention will not be directly conducted to bearing, enable bearing
It is enough to work at low temperature, it will not overheating deforming；
3, increase dielectric strength: using ripple ceramic structure, surface creepage distance can be increased, that is, increase dielectric strength；
4, increase homogeneous tube mechanical strength: using ripple ceramic and end seal structure, it is ensured that the concentricity of homogeneous tube reduces insulation
Mechanical stress between material and metal increases mechanical strength；
5, improve the ability for bearing secondary electron bombardment: ceramics can be resistant to 1400 degree of high temperature, bear the energy of secondary electron bombardment
Power is significantly larger than glass, thus improves the service life of X-ray tube.
In conclusion the X-ray tube technical solution can effectively improve the heat-sinking capability of target disc, it is reliable to improve bearing
Property, so that anode thermal capacity is realized 5MHU or more.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of internal cooling ball bearing medical X-ray tube of the present invention；
Fig. 2 is the structural schematic diagram of hollow target disc of the present invention；
Fig. 3 is the structural schematic diagram of hollow bearing of the present invention；
Fig. 4 is the structural schematic diagram of anode corrugations ceramics of the present invention；
Fig. 5 is the structural schematic diagram of prior art X-ray tube of the present invention；
Fig. 6 is the structural schematic diagram that target disc of the present invention and hollow bearing radiate；
Fig. 7 is the partial enlarged view of Fig. 6.
In figure: target disc 1, support ring 2, rotor molybdenum bar 3, rotor copper sheathing 4, rotor iron seat 5, anode corrugations ceramics 6, hollow shaft
Hold 7, target disc graphite 8, TZM and rhenium tungsten layer 9, hollow shaft sleeve 10, on bearing outer ring among 11, bearing 13 under ring 12, bearing outer ring,
Shaft 14, cavity 15, bearing flange 16, ceramic ripple 17, anode can cut down greatly that 18, anode is small to cut down 19, screw 20, transition rings
21, target disc 1, anode glass bulb 1, rotor copper sheathing 1, bearing holder (housing, cover) 1, shaft 1, sleeve thread 1.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", " clockwise ", " inverse
The orientation or positional relationship of the instructions such as hour hands " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description originally
Invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific side
Position construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two, unless otherwise restricted clearly.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Embodiment
The cooling ball bearing medical X-ray tube in inside as shown in Figure 1, including target disc 1, support ring 2, rotor molybdenum bar 3, turn
Sub- copper sheathing 4, rotor iron seat 5, anode corrugations ceramics 6 and hollow bearing 7, the target disc 1 are connect with support ring 2, the support ring 2
It is connect with rotor molybdenum bar 3, the rotor molybdenum bar 3 is connect with rotor iron seat 5, and the rotor copper sheathing 4 is set in the outer of rotor iron seat 5
On wall, the anode corrugations ceramics 6 are set in the outside of rotor copper sheathing 4, and the setting of hollow bearing 7 is in rotor molybdenum bar 3 and turns
In sub- iron seat 5.
Target disc 1 as shown in Figure 2 includes target disc graphite 8 and TZM and rhenium tungsten layer 9, the target disc graphite 8 and TZM and rhenium tungsten
It is hollow structure inside layer 9, the TZM and rhenium tungsten layer 9 are set on the left side of target disc graphite 8, a left side for the support ring 2
End face is bonded with the right side of TZM and rhenium tungsten layer 9, and the left part of support ring 2 is placed in the internal cavities of target disc graphite 8.
Hollow target disc structure design: the TZM and graphite and support ring of rhenium tungsten layer become whole by high-temperature soldering technique, support ring material
Material uses molybdenum or TZM.
Hollow bearing 7 as shown in Figure 3 includes hollow shaft sleeve 10, ring 12, bearing outer ring among 11, bearing on bearing outer ring
13 and shaft 14 are descended, one end of the shaft 14 is arranged in hollow shaft sleeve 10, ring 12 among 11, bearing on the bearing outer ring
And 13 be arranged between the outer wall of shaft 14 and the inner wall of hollow shaft sleeve 10 under bearing outer ring, the setting of ring 12 exists among the bearing
On bearing outer ring 11 and bearing outer ring under between 13, among the bearing 13 under ring 12 and bearing outer ring between be equipped with transition rings
21.One end in hollow bearing 7 far from shaft 14 is equipped with cavity 15.Shaft 14 is equipped with bearing flange 16 close to the end of target disc 1.
Hollow bearing design scheme: mainly the design of hollow shaft sleeve 10, specific design structure are shown in Fig. 3, and cooling oil can be directly cooled to
Axle sleeve.
The design of above-mentioned target disc 1 and hollow bearing 7 as shown in Figures 6 and 7, so that the heat transfer that target disc 1 generates is to sky
Mandrel holds the path extension of 7 and shaft 14, can be effectively reduced the temperature at hollow bearing 7 and shaft 14, specific to radiate
Principle are as follows: target disc 1 generates heat, and since target disc 1 is hollow target disc, target disc 1 and rotor molybdenum bar 3 are not bonding structure, therefore heat
Amount can only transfer heat on rotor molybdenum bar 3 along the transmitting of target disc 1 up to the screw of target disc 1 and 3 junction of rotor molybdenum bar, heat
Amount is transmitted along rotor molybdenum bar 3 to the direction close to target disc 1, at the attachment screw for reaching rotor molybdenum bar 3 and hollow bearing 7, is led to
It crosses screw to transfer heat on hollow bearing 7, this structure heat transfer path greatly prolongs, due to the outer wall of hollow shaft sleeve 10
It is directly contacted with cooling oil, constantly carries out the cooling of hollow shaft sleeve 10, therefore when heat transfer to hollow bearing 7, temperature is significantly
It reduces, this structure plays good cooling effect, can guarantee the normal use of hollow bearing 7, prolong the service life.
The outer wall of anode corrugations ceramics 6 as shown in Figure 4 is equipped with one group of ceramics ripple 17.Anode corrugations ceramics 6 lean on
The end of near target disk 1, which is equipped with anode, can cut down greatly 18, and the anode corrugations ceramics 6 are equipped with that anode is small to be cut down far from the end of target disc 1
19.Anode corrugations Ceramic Art Design: anode uses ripple ceramic, and ceramics use 95%, 97%, 99% aluminum oxide industrial ceramics,
The ripple of any shape or the slot of transverse direction are opened in ceramic surfaces externally and internally, and ripple ceramic and the sealing structure that can be cut down use end seal, put down
Envelope, sleeve and clamp, wherein clamp can be metal or ceramics.
More screw fixed forms of anode disc: pass through 3-6 screw 20 between target disc 1 and support ring 2 and rotor copper sheathing 4
Connection.It is fixed by 6-12 screw 20 between rotor copper sheathing 4 and hollow bearing 7.Screw 20 is that stainless steel material passes through melting
Spot welding is fixed.Several screw fixed forms of anode disc: anode disc is connected by 6-12 screw with rotor copper sheathing, rotor copper
Set is connected by 3-6 screw with bearing, and all fixing screws use stainless steel material, melts spot welding mode.
The embodiment of the present invention and the prior art is as follows:
The present invention mainly uses hollow target disc structure, specific embodiment are as follows: hollow target disc high-temperature soldering-rotor copper sheathing welds twice
Connect-bearing integrated makeup installs with-hollow target disc and rotor copper sheathing assembly-integral shaft with-dynamic balancing-ripple ceramic argon arc
Weldering；Vacuum drying oven high temperature brazing and argon arc welding technique need to be used.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as of the invention
Protection scope.
Claims (10)
1. a kind of internal cooling ball bearing medical X-ray tube, it is characterised in that: including target disc (1), support ring (2), rotor molybdenum
Stick (3), rotor copper sheathing (4), rotor iron seat (5), anode corrugations ceramic (6) and hollow bearing (7), the target disc (1) and support
Ring (2) connection, the support ring (2) connect with rotor molybdenum bar (3), and the rotor molybdenum bar (3) connect with rotor iron seat (5), institute
It states rotor copper sheathing (4) to be set on the outer wall of rotor iron seat (5), the anode corrugations ceramic (6) are set in rotor copper sheathing (4)
Outside, hollow bearing (7) setting is in rotor molybdenum bar (3) and rotor iron seat (5).
2. internal cooling ball bearing medical X-ray tube according to claim 1, it is characterised in that: target disc (1) packet
Target disc graphite (8) and TZM and rhenium tungsten layer (9) are included, the target disc graphite (8) and TZM and rhenium tungsten layer (9) inside are hollow knot
Structure, the TZM and rhenium tungsten layer (9) are set on the left side of target disc graphite (8), the left side of the support ring (2) and TZM and
The right side of rhenium tungsten layer (9) is bonded, and the left part of support ring (2) is placed in the internal cavities of target disc graphite (8).
3. internal cooling ball bearing medical X-ray tube according to claim 1, it is characterised in that: the hollow bearing
It (7) include hollow shaft sleeve (10), (11) on bearing outer ring, (13) and shaft (14), institute under ring (12), bearing outer ring among bearing
One end setting of shaft (14) is stated in hollow shaft sleeve (10), (11), bearing centre ring (12) and bearing on the bearing outer ring
(13) are arranged between the outer wall of shaft (14) and the inner wall of hollow shaft sleeve (10) under outer ring, and ring (12) is arranged among the bearing
On bearing outer ring under (11) and bearing outer ring between (13), set between (13) under the bearing centre ring (12) and bearing outer ring
There are transition rings (21).
4. internal cooling ball bearing medical X-ray tube according to claim 3, it is characterised in that: the hollow bearing
(7) one end in far from shaft (14) is equipped with cavity (15).
5. internal cooling ball bearing medical X-ray tube according to claim 4, it is characterised in that: the shaft (14)
End close to target disc (1) is equipped with bearing flange (16).
6. internal cooling ball bearing medical X-ray tube according to claim 1, it is characterised in that: the anode corrugations
The outer wall of ceramic (6) is equipped with one group of ceramics ripple (17).
7. internal cooling ball bearing medical X-ray tube according to claim 6, it is characterised in that: the anode corrugations
The end of the close target disc (1) of ceramic (6), which is equipped with anode, can cut down greatly (18), and the anode corrugations ceramic (6) are far from target disc (1)
End is equipped with that anode is small cuts down (19).
8. internal cooling ball bearing medical X-ray tube according to claim 1, it is characterised in that: the target disc (1) and
It is connect between support ring (2) and rotor copper sheathing (4) by 3-6 screw (20).
9. internal cooling ball bearing medical X-ray tube according to claim 8, it is characterised in that: the rotor copper sheathing
(4) fixed by 6-12 screw (20) between hollow bearing (7).
10. internal cooling ball bearing medical X-ray tube according to claim 9, it is characterised in that: the screw (20)
It is fixed by fusion point solid welding for stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810825060.5A CN109192644B (en) | 2018-07-25 | 2018-07-25 | Medical X-ray tube with internal cooling ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810825060.5A CN109192644B (en) | 2018-07-25 | 2018-07-25 | Medical X-ray tube with internal cooling ball bearing |
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| Publication Number | Publication Date |
|---|---|
| CN109192644A true CN109192644A (en) | 2019-01-11 |
| CN109192644B CN109192644B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810825060.5A Active CN109192644B (en) | 2018-07-25 | 2018-07-25 | Medical X-ray tube with internal cooling ball bearing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582242A (en) * | 2020-12-28 | 2021-03-30 | 思柯拉特医疗科技（苏州）有限公司 | Liquid metal bearing medical X-ray tube |
| CN113001002A (en) * | 2021-03-30 | 2021-06-22 | 杭州凯龙医疗器械有限公司 | Fixing method for CT tube target disc and rotor copper sleeve |
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| CN2298601Y (en) * | 1997-05-14 | 1998-11-25 | 时代集团公司太原研究所 | Industrial X ray pipe with external target type anode substance |
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| CN113001002A (en) * | 2021-03-30 | 2021-06-22 | 杭州凯龙医疗器械有限公司 | Fixing method for CT tube target disc and rotor copper sleeve |
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