Bearing structure of X-ray tube core

Abstract

The utility model discloses a bearing structure of an X-ray tube core, which comprises an anode bearing in a circular ring shape, and one end of the anode bearing is used for being connected with an anode rotor of the X-ray tube core; the heat dissipation piece is in a circular ring shape, and the top end of the heat dissipation piece is detachably connected with the other end of the anode bearing; wherein the outer diameter of the heat dissipation piece is larger than that of the anode bearing, and the outer wall of the heat dissipation piece is formed by integrally connecting a plurality of V-shaped heat dissipation fins in the length direction of the heat dissipation piece. By adopting the mode, the bearing structure of the X-ray tube core disclosed by the utility model can increase the contact area with cooling oil, effectively improve the heat conduction efficiency, and cool the anode more quickly, so that the heat bearing capacity of the anode is improved, and the long-time working cruising ability of an X-ray tube is also improved; after the heat conduction capability is enhanced, the high-temperature time of the bearing core ball can be effectively protected, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of X-rays, in particular to a bearing structure of an X-ray tube core. Background Art

[0002] The working principle of X-ray generation is to heat the cathode filament to generate an electron cloud. A strong electric field is then applied to the cathode and cathode ends of the X-ray tube core, causing the cathode electrons to move at high speeds, bombarding the anode metal target disk, generating X-rays. However, over 99% of the energy generated by this movement is converted into heat. This heat energy must be reduced through thermal radiation and heat conduction to achieve long-term operation. Heat conduction is typically conducted through the anode target disk to the anode rotor and bearings, and then transferred through the bearing sleeve to the cooling oil to reduce the anode temperature.

[0003] However, in traditional methods, the bearings of X-ray tube cores on the market use a straight-cylinder metal structure as a heat dissipation structure. However, the contact area with the cooling oil is relatively small, resulting in low heat conduction efficiency and slow cooling of the anode. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a bearing structure for an X-ray tube core, which can solve the above technical problems.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a bearing structure for an X-ray tube core, characterized in that it includes: an anode bearing, which is in a circular ring shape, one end of which is used to be connected to the anode rotor of the X-ray tube core; a heat sink, which is in a circular ring shape, the top end of which is detachably connected to the other end of the anode bearing; wherein the outer diameter of the heat sink is larger than the outer diameter of the anode bearing, and the outer wall of the heat sink is formed by a plurality of V-shaped heat sinks connected as a whole along its length direction.

[0008] Furthermore, a connecting plate is provided at the center of the inner hole at the top end of the heat sink, and a receiving through hole detachably connected to the other end of the anode bearing is provided at the center of the connecting plate.

[0009] Furthermore, an inner wall of the receiving through hole of the connecting plate is provided with an internal thread, and an outer wall of the other end of the anode bearing is provided with an external thread threadably connected to the internal thread.

[0010] Furthermore, a ring-shaped annular portion is provided on the bottom wall of the heat sink extending downward, wherein the outer diameter of the annular portion is smaller than the outer diameter of the heat sink.

[0011] Furthermore, the connecting plate, the heat sink and the annular portion are integrally formed.

[0012] Furthermore, an inner wall of the receiving through hole of the connecting plate is downwardly extended to form an annular extension portion, wherein the horizontal plane where the bottom end of the extension portion is located is the same as the horizontal plane where the bottom end of the annular portion is located.

[0013] Furthermore, a plurality of flow holes are arranged at intervals in the extension portion.

[0014] Furthermore, the bottom end of the annular portion is obliquely provided with an inclined piece facing the extending portion.

[0015] Furthermore, a plurality of extension pieces are arranged at intervals on the outer wall of the extension portion obliquely downward.

[0016] Furthermore, the included angle of the V-shaped heat sink is in the range of 30-60 degrees.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the present invention provides a bearing structure for an X-ray tube core, which has the following beneficial effects: the bearing structure for the X-ray tube core disclosed in the present invention includes: an anode bearing in a circular ring shape, one end of which is used to connect to the anode rotor of the X-ray tube core; a heat sink in a circular ring shape, the top end of which is detachably connected to the other end of the anode bearing; wherein the outer diameter of the heat sink is larger than the outer diameter of the anode bearing, and the outer wall of the heat sink is formed by a plurality of V-shaped heat sinks connected integrally along its length. Through the above-mentioned method, the bearing structure for the X-ray tube core disclosed in the present invention can increase the contact area with the cooling oil, effectively improve the heat conduction efficiency, and cool the anode more quickly, thereby improving the heat bearing capacity of the anode and the long-term working endurance of the X-ray tube. In addition, the enhanced heat conduction capacity can effectively protect the bearing core balls from being exposed to high temperatures and increase the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the bearing structure of the X-ray tube core of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the heat sink;

[0021] Figure 3 for Figure 2 A schematic cross-sectional view of a first embodiment of a middle heat sink;

[0022] Figure 4 for Figure 2 A schematic cross-sectional view of a second embodiment of the heat dissipation element. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1-3 The utility model provides a bearing structure of an X-ray tube core, including an anode bearing 11 and a heat sink 12.

[0025] The anode bearing 11 is annular, wherein one end of the anode bearing 11 is used to be connected to the anode rotor 10 of the X-ray tube core.

[0026] The heat sink 12 is annular, with its top end detachably connected to the other end of the anode bearing 11. It should be understood that heat from the anode bearing 11 can be transferred to the heat sink 12, and then to the cooling oil. Furthermore, since the top end of the heat sink 12 is detachably connected to the other end of the anode bearing 11, different heat sinks 12 can be replaced as needed.

[0027] Preferably, the outer diameter of the heat sink 12 is larger than the outer diameter of the anode bearing 11 , so as to achieve a better heat dissipation effect.

[0028] In this embodiment, the outer wall of the heat sink 12 is formed by a plurality of V-shaped fins 121 connected integrally along its length. It should be understood that the outer wall of the heat sink 12 is in contact with the cooling oil. Because the outer wall of the heat sink 12 is formed by the plurality of V-shaped fins 121, the contact area with the cooling oil is increased, effectively improving heat transfer efficiency and rapidly cooling the anode.

[0029] Preferably, the included angle of the V-shaped heat sink is in the range of 30-60 degrees.

[0030] Furthermore, a connecting plate 122 is provided at the center of the inner hole at the top of the heat sink 12 , and a receiving through hole 1221 detachably connected to the other end of the anode bearing 11 is provided at the center of the connecting plate 122 .

[0031] Specifically, the inner wall of the receiving through hole 1221 of the connecting plate 122 is provided with an internal thread, and the outer wall of the other end of the anode bearing 11 is provided with an external thread threadedly connected to the internal thread, so that the anode bearing 11 and the connecting plate 122 are connected by a threaded connection.

[0032] It should be understood that in some embodiments, in order to enhance the cooling effect, the V-shaped heat sink 121, the connecting plate 122 and the annular portion 123 may be provided with oil holes to facilitate the flow of cooling oil to drive heat and achieve better heat dissipation effect.

[0033] In this embodiment, a ring-shaped portion 123 is formed on the bottom wall of the heat dissipation element 12 and extends downward. The outer diameter of the ring-shaped portion 123 is smaller than the outer diameter of the heat dissipation element 12 .

[0034] Preferably, the connecting plate 122, the heat sink 12 and the annular portion 123 are integrally formed. It should be understood that the connecting plate 122, the heat sink 12 and the annular portion 123 are all made of heat-conducting metal (such as copper or aluminum).

[0035] Further, such as Figure 4 As shown, in some embodiments, an annular extension portion 124 is provided extending downward from the inner wall of the receiving through hole 1221 of the connecting plate 122, wherein the bottom end of the extension portion 124 is located at the same horizontal plane as the bottom end of the annular portion 123. It should be understood that since the heat sink 12 is immersed in the cooling oil, when the heat sink 12 is immersed in the cooling oil, the V-shaped heat sink fins 121, the annular portion 123, and the extension portion 124 of the heat sink 12 are all in contact with the cooling oil, resulting in a large contact area and a better cooling effect.

[0036] Preferably, a plurality of flow holes 1241 are provided at intervals in the extension portion 124 to facilitate the flow of cooling oil and facilitate heat dissipation.

[0037] Furthermore, the bottom end of the annular portion 123 is obliquely provided with an inclined piece 1231 toward the extension portion 124 . It should be understood that the inclined piece 1231 is provided mainly to increase the contact area with the cooling oil.

[0038] Furthermore, a plurality of extension pieces are provided at intervals on the outer wall of the extension portion 124 slanting downward. It should be understood that the extension pieces are provided to increase the contact area with the cooling oil.

[0039] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bearing structure for an X-ray tube core, characterized in that: include: The anode bearing is annular, one end of which is used to connect to the anode rotor of the X-ray tube core; a heat sink in a ring shape, the top end of which is detachably connected to the other end of the anode bearing; The outer diameter of the heat sink is larger than the outer diameter of the anode bearing, and the outer wall of the heat sink is formed by a plurality of V-shaped heat sinks connected integrally along its length direction.

2. The bearing structure of the X-ray tube core according to claim 1, characterized in that: A connecting plate is provided at the center of the inner hole at the top end of the heat sink, and a receiving through hole detachably connected to the other end of the anode bearing is provided at the center of the connecting plate.

3. The bearing structure of the X-ray tube core according to claim 2, characterized in that: An inner wall of the receiving through hole of the connecting plate is provided with an internal thread, and an outer wall of the other end of the anode bearing is provided with an external thread threadably connected to the internal thread.

4. The bearing structure of the X-ray tube core according to claim 3, characterized in that: The bottom wall of the heat sink is downwardly extended to form a ring-shaped annular portion, wherein the outer diameter of the annular portion is smaller than the outer diameter of the heat sink.

5. The bearing structure of the X-ray tube core according to claim 4, characterized in that: The connecting plate, the heat sink and the annular portion are integrally formed.

6. The bearing structure of the X-ray tube core according to claim 4, characterized in that: An inner wall of the receiving through hole of the connecting plate is downwardly extended to form an annular extension portion, wherein the horizontal plane where the bottom end of the extension portion is located is the same as the horizontal plane where the bottom end of the annular portion is located.

7. The bearing structure of the X-ray tube core according to claim 6, characterized in that: A plurality of flow holes are arranged at intervals in the extension portion.

8. The bearing structure of the X-ray tube core according to claim 6, characterized in that: The bottom end of the annular portion is obliquely provided with an inclined piece facing the extending portion.

9. The bearing structure of the X-ray tube core according to claim 6, characterized in that: The outer wall of the extension portion is provided with a plurality of extension pieces at intervals and slanting downward.

10. The bearing structure of the X-ray tube core according to claim 1, characterized in that: The included angle of the V-shaped heat sink is in the range of 30-60 degrees.

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