X-ray tube core

Abstract

The X-ray tube core comprises a metal shell, a cathode component and an anode component, the anode component comprises an anode target disc, a rotor and a first bearing, the metal shell is provided with a containing cavity and a containing through hole, the anode target disc is located in the containing cavity, the top end of the rotor is arranged in the containing through hole of the metal shell in a penetrating mode, and the first bearing is arranged in the containing through hole of the metal shell. The top end of the first bearing is fixedly arranged at the top end in an inner cavity of the rotor, the anode target disc is connected with the top end of the rotor, the anode target disc extends downwards to be provided with an extension part, the extension part forms a containing groove, one end of the second bearing is fixedly arranged on the bottom wall of the containing groove, and the other end of the second bearing is fixedly arranged on the inner cavity of the rotor. And the other end of the second bearing is fixedly arranged on the top surface of the metal shell. Through the mode, one part of heat generated by the anode target disc can be conducted to the insulating oil from the anode component, and the other part of the heat is conducted to the insulating oil through the cathode component, so that better heat dissipation is realized, and the service life of the X-ray tube core is effectively prolonged.

Description

Technical Field

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

[0002] The X-ray tube core is the main core component of the CT machine. The X-ray tube core is a vacuum diode working under high voltage. Generally, the X-ray tube core is connected to the cathode component and the anode component through a metal shell, and the anode component includes an anode target plate, a rotor and a bearing.

[0003] However, the bearing of the X-ray tube core on the market is set at one end of the metal shell. When the X-ray tube core is working, the centrifugal force generated by the high-speed rotation of the X-ray tube core and the CT frame is mainly borne by the bearing, so a large load is placed on one end of the bearing. At the same time, the heat of the anode target is conducted to the inside of the bearing through one end of the bearing, and the bearing is easily damaged, which will also affect the service life of the X-ray tube core. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an X-ray tube core that can solve the above technical problems.

[0006] (II) Technical solution

[0007] To solve the above technical problems, the utility model provides the following technical solutions: an X-ray tube core, comprising a metal shell, a cathode component and an anode component, wherein the cathode component is arranged on the top surface of the metal shell, the anode component comprises an anode target disk, a rotor and a first bearing, the metal shell is provided with a receiving cavity, the bottom surface of the metal shell is provided with a receiving through hole communicating with the receiving cavity, the anode target disk is located in the receiving cavity, the top end of the rotor is penetrated in the receiving through hole of the metal shell, the first bearing is located in the rotor, the top end of the first bearing is fixedly arranged at the top end in the inner cavity of the rotor, the anode target disk is connected to the top end of the rotor, and the X-ray tube core further comprises a second bearing, wherein an extension portion connected to the top end of the rotor is extended downward from the center of the anode target disk, the extension portion is formed with a receiving groove, and one end of the second bearing is fixedly arranged on the bottom wall of the receiving groove, and the other end of the second bearing is fixedly arranged on the top surface of the metal shell.

[0008] Furthermore, the first bearing and the second bearing are arranged on the same straight line.

[0009] Furthermore, the first bearing and the second bearing are in the shape of long strips and are symmetrically arranged.

[0010] Furthermore, a connecting flange is provided at the top end of the inner cavity of the rotor, wherein the top end of the first bearing is connected to one side of the connecting flange, and one end of the second bearing is connected to the other side of the connecting flange.

[0011] Furthermore, the connecting flange serves as the bottom wall of the receiving groove.

[0012] Furthermore, an opening is provided on the top surface of the metal shell, and the other end of the second bearing is fixedly disposed in the inner wall of the opening.

[0013] Furthermore, the inner ring of the first bearing is connected to one side of the connecting flange by a threaded connection, and the inner ring of one end of the second bearing is connected to the other side of the connecting flange by a threaded connection.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides an X-ray tube core, which has the following beneficial effects: the X-ray tube core disclosed in the utility model comprises a second bearing, a metal shell, a cathode component and an anode component, wherein the anode component comprises an anode target disk, a rotor and a first bearing, the metal shell is provided with a receiving cavity and a receiving through hole, the anode target disk is in the receiving cavity, the top end of the rotor is penetrated in the receiving through hole of the metal shell, the top end of the first bearing is fixedly arranged at the top end in the inner cavity of the rotor, the anode target disk is connected to the top end of the rotor, and the anode target disk is extended downwardly to be provided with an extension portion, the extension portion is formed with a receiving groove, one end of the second bearing is fixedly arranged on the bottom wall of the receiving groove, and the other end of the second bearing is fixedly arranged on the top surface of the metal shell. Through the above-mentioned manner, the utility model carries out a new structural design for the X-ray tube core, which can make a part of the heat generated by the anode target disk be transferred from the anode component to the insulating oil, and a part of the heat be transferred to the insulating oil through the cathode component, so as to dissipate heat better; the first bearing and the second bearing can make the X-ray tube core have less noise at a high rotation speed of the anode target disk; at the same time, the centrifugal force of the anode target disk and the centrifugal force of the CT frame borne by the first bearing and the second bearing can be dispersed to the cathode component and the anode component respectively, so that the bearings are not easily damaged, and the service life of the X-ray tube core is effectively increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the X-ray tube core of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the cross-section structure of the X-ray tube core;

[0018] Figure 3 for Figure 1 A schematic cross-sectional view of a first partial structure of the X-ray tube core;

[0019] Figure 4 for Figure 1 A schematic cross-sectional structural diagram of the second partial structure of the X-ray tube core. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-4 The utility model provides an X-ray tube core, which includes a metal shell 10, a cathode component 11, an anode component 12 and a second bearing 13.

[0022] In this embodiment, the cathode component 11 is arranged on the top surface of the metal shell 10, and the anode component 12 includes an anode target plate 121, a rotor 122 and a first bearing 123. Further, the metal shell 10 is provided with a receiving cavity 101, and the bottom surface of the metal shell 10 is provided with a receiving through hole connected to the receiving cavity 101, the anode target plate 121 is in the receiving cavity 101, the top end of the rotor 122 is penetrated in the receiving through hole of the metal shell 10, the first bearing 123 is in the rotor 122, the top end of the first bearing 123 is fixedly arranged at the top end of the inner cavity of the rotor 122 (that is, the outer ring of the first bearing 123 is fixedly connected to the top end of the inner cavity of the rotor 122), and the anode target plate 121 is connected to the top end of the rotor 122. In other words, the anode target plate 121, the rotor 122 and the outer ring of the first bearing 123 rotate synchronously.

[0023] It is worth noting that the anode target plate 121, the rotor 122 and the first bearing 123 in this embodiment can be implemented by using products in the prior art, and their principles and structures are not described in detail here.

[0024] In this embodiment, an extension portion 1211 connected to the top of the rotor 122 extends downward from the center of the anode target plate 121 , wherein the extension portion 1211 is formed with a receiving groove 1212 , and one end of the second bearing 13 is fixedly disposed on the bottom wall of the receiving groove 1212 .

[0025] Further, the other end of the second bearing 13 is fixedly disposed on the top surface of the metal shell 10. Specifically, an opening is provided on the top surface of the metal shell 10, wherein the other end of the second bearing 13 is fixedly disposed in the inner wall of the opening.

[0026] In this embodiment, the first bearing 123 and the second bearing 13 are arranged in the same straight line. It should be understood that the first bearing 123 is arranged on the bottom surface of the metal shell 10, and the other end of the second bearing 13 is fixedly arranged on the top surface of the metal shell 10, so the centrifugal force of the anode target plate 121 and the centrifugal force of the CT frame borne by the first bearing 123 and the second bearing 13 can be dispersed to the cathode component 11 and the anode component 12 respectively, so that the bearings are not easily damaged, and part of the heat generated by the anode target plate 121 can be conducted from the anode component 12 to the insulating oil, and part of it can be conducted to the insulating oil through the cathode component 11, so as to better dissipate heat.

[0027] Preferably, the first bearing 123 and the second bearing 13 are in the shape of long strips and are symmetrically arranged, so that the first bearing 123 and the second bearing 13 can make the X-ray tube core have less noise at a high rotation speed of the anode target plate 121 .

[0028] Furthermore, a connecting flange 124 is provided at the top end of the inner cavity of the rotor 122 , wherein the top end of the first bearing 123 is connected to one side of the connecting flange 124 , and one end of the second bearing 13 is connected to the other side of the connecting flange 124 .

[0029] Preferably, the connecting flange 124 serves as the bottom wall of the receiving groove 1212, and the connecting flange 124 serves as the top wall of the inner cavity of the rotor 122. That is, the receiving groove 1212 and the inner cavity of the rotor 122 are arranged in the same straight line.

[0030] In this embodiment, the inner ring of the first bearing 123 is connected to one side of the connecting flange 124 by a threaded connection, and the inner ring of one end of the second bearing 13 is connected to the other side of the connecting flange 124 by a threaded connection.

[0031] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An X-ray tube core, comprising a metal shell, a cathode component and an anode component, wherein the cathode component is arranged on the top surface of the metal shell, the anode component comprises an anode target disk, a rotor and a first bearing, the metal shell is provided with a receiving cavity, the bottom surface of the metal shell is provided with a receiving through hole connected to the receiving cavity, the anode target disk is located in the receiving cavity, the top end of the rotor is penetrated in the receiving through hole of the metal shell, the first bearing is located in the rotor, the top end of the first bearing is fixedly arranged at the top end in the inner cavity of the rotor, the anode target disk is connected to the top end of the rotor, and the invention is characterized in that: The X-ray tube core also includes a second bearing, wherein an extension portion connected to the top of the rotor is extended downward from the center of the anode target plate, the extension portion is formed with a receiving groove, and one end of the second bearing is fixedly arranged on the bottom wall of the receiving groove, and the other end of the second bearing is fixedly arranged on the top surface of the metal shell.

2. The X-ray tube core according to claim 1, characterized in that: The first bearing and the second bearing are arranged on the same straight line.

3. The X-ray tube core according to claim 1, characterized in that: The first bearing and the second bearing are in the shape of long strips and are symmetrically arranged.

4. The X-ray tube core according to claim 2 or 3, characterized in that: A connecting flange is arranged at the top end of the inner cavity of the rotor, wherein the top end of the first bearing is connected to one side of the connecting flange, and one end of the second bearing is connected to the other side of the connecting flange.

5. The X-ray tube core according to claim 4, characterized in that: The connecting flange serves as the bottom wall of the receiving groove.

6. The X-ray tube core according to claim 5, characterized in that: An opening is provided on the top surface of the metal shell, and the other end of the second bearing is fixedly arranged in the inner wall of the opening.

7. The X-ray tube core according to claim 6, characterized in that: The inner ring of the first bearing is connected to one side of the connecting flange by a threaded connection, and the inner ring of one end of the second bearing is connected to the other side of the connecting flange by a threaded connection.

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