X-ray tube and window body applied to X-ray tube

Abstract

The utility model discloses an X-ray tube and a window body applied to the X-ray tube, the X-ray tube comprises a shell, and a cathode assembly and an anode assembly which are respectively arranged at two ends of the shell, and further comprises a window body fixedly connected between the shell and the anode assembly, the window body comprises a connecting part and a convex part, the connecting part is connected with the convex part, and the convex part is connected with the shell. The thickness of the protruding part is larger than that of the connecting part, and the thickness of the protruding part is larger than or equal to 2 mm. And the window body is made of beryllium aluminum alloy.

Description

Technical Field

[0001] The present application relates to the technical field of X-ray tubes, and in particular to an X-ray tube and a window body applied to the X-ray tube. Background Art

[0002] With the continuous development of the current medical device field, X-ray tubes have become one of the important means of medical diagnosis.

[0003] An X-ray tube primarily consists of a cathode assembly, an anode assembly, and a housing. The housing primarily supports the cathode and anode assemblies and ensures electron acceleration in a vacuum electric field. It's important to note that the interior of the housing requires a complete vacuum, and a window is located at the X-ray exit.

[0004] Therefore, the window body, as part of the housing, not only serves as the X-ray outlet but also supports the cathode and anode assemblies. Since the tube core rotates at high speed during normal operation, a large amount of heat is transferred to the window body. Existing window bodies are mostly 0.2mm thick. Therefore, after a period of use, the window body will develop varying degrees of wrinkling and deformation due to the torque and heat from rotation. This can cause the coaxiality of the cathode and anode assemblies inside the housing to change, shortening the life of the tube core.

[0005] Furthermore, the existing window bodies are generally thicker at both ends and thinner in the middle, which increases the difficulty of processing. Furthermore, due to the high manufacturing process requirements, the window body scrap rate is significantly increased, which increases economic costs.

[0006] With regard to the technical problem in the prior art mentioned above, how to solve the problem that the thickness of the window body of the existing X-ray tube is too thin, so that when the tube core rotates at high speed or a large amount of heat is transferred to the window body, the window body is prone to wrinkling and deformation to varying degrees, thereby shortening the life of the tube core, no effective solution has been proposed so far. Utility Model Content

[0007] The utility model provides an X-ray tube and a window body applied to the X-ray tube, so as to at least solve the technical problem existing in the prior art of how to solve the problem that the thickness of the window body of the existing X-ray tube is too thin, so that when the tube core rotates at high speed or a large amount of heat is transferred to the position of the window body, the window body is prone to wrinkling and deformation to varying degrees, thereby shortening the life of the tube core.

[0008] According to an aspect of the present application, an X-ray tube is provided, comprising a housing, a cathode assembly and an anode assembly arranged at two ends of the housing respectively, and further comprising a window body fixedly connected between the housing and the anode assembly, wherein the window body comprises a connecting portion and a protruding portion, the connecting portion is connected with the protruding portion, the thickness of the protruding portion is greater than the thickness of the connecting portion, and the thickness of the protruding portion is greater than or equal to 2 mm; and the material of the window body is beryllium aluminum alloy.

[0009] Optionally, the connecting portion comprises a first connecting portion and a second connecting portion, wherein the first connecting portion is fixedly connected with the housing, and the second connecting portion is fixedly connected with the anode assembly.

[0010] Optionally, the first connecting portion is fixedly connected with the housing by laser welding, and the second connecting portion is fixedly connected with the anode assembly by laser welding.

[0011] According to another aspect of the present application, a window body applied to an X-ray tube is provided, wherein the window body comprises a connecting portion and a protruding portion, the connecting portion is connected with the protruding portion, the thickness of the protruding portion is greater than the thickness of the connecting portion, and the thickness of the protruding portion is greater than or equal to 2 mm; and the material of the window body is beryllium aluminum alloy.

[0012] Optionally, the connecting portion comprises a first connecting portion and a second connecting portion, wherein the first connecting portion is connected with the housing, and the second connecting portion is connected with the anode assembly.

[0013] Optionally, the first connecting portion is fixedly connected with the housing by laser welding, and the second connecting portion is fixedly connected with the anode assembly by laser welding.

[0014] The present application provides an X-ray tube, wherein the window body comprises a connecting portion and a protruding portion, the thickness of the protruding portion is greater than the thickness of the connecting portion, and the thickness of the protruding portion is greater than or equal to 2 mm; and the material of the window body is beryllium aluminum alloy.

[0015] Since the thickness of the protruding portion of the window body provided by the present application is greater than the thickness of the connecting portion, and the thickness of the protruding portion is greater than or equal to 2 mm, compared with the thickness of the existing window body (the thickness of the existing window body is 0.2 mm), the thickness of the window body in the present application is sufficient to ensure that even in the case of high-speed rotation of the tube core, or in the case of a large amount of heat, it will not wrinkle or deform.

[0016] Further, since the material of the window body provided by the present application is beryllium aluminum alloy, and the beryllium aluminum alloy can transmit X-rays, the thickness of the window body is increased while the normal operation of the window body is ensured.

[0017] As can be seen from the foregoing, the window body provided by the present application can, while ensuring normal operation, avoid wrinkling or deformation caused by high-speed rotation of the tube core or large amounts of heat, thereby extending the life of the tube core. This solves the technical problem in the prior art of how to address the problem of the window body of existing X-ray tubes being too thin, which can easily cause varying degrees of wrinkling and deformation of the window body when the tube core rotates at high speed or when large amounts of heat are transferred to the window body, thereby shortening the life of the tube core.

[0018] Based on the detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Hereinafter, some specific embodiments of the present application will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the drawings:

[0020] Figure 1 is a schematic structural diagram of an X-ray tube according to an embodiment of the present application;

[0021] Figure 2A is a structural diagram of a window body according to an embodiment of the present application;

[0022] Figure 2B It is a partially enlarged view of the window body according to the embodiment of the present application. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to help those skilled in the art better understand the present invention, 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 should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate for the embodiments of the present invention described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatuses.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] Figure 1 Schematic diagram of an X-ray tube according to an embodiment of the present application. Figure 2A A schematic structural diagram of the window body according to an embodiment of the present application. Figure 2B This is a partial enlarged view of the window body according to the embodiment of the present application. Figure 1 、 Figure 2A and Figure 2B As shown, an X-ray tube includes: a shell 10, and a cathode assembly 20 and an anode assembly 30 respectively arranged at both ends of the shell 10, and also includes: a window body 40 fixedly connected between the shell 10 and the anode assembly 30, wherein the window body 40 includes a connecting portion 410 and a protruding portion 420, the connecting portion 410 is connected to the protruding portion 420, and the thickness of the protruding portion 420 is greater than the thickness of the connecting portion 410, and the thickness of the protruding portion 420 is greater than or equal to 2 mm; and the window body 140 is made of beryllium aluminum alloy.

[0028] As described in the background, the window body, as part of the housing, not only serves as the X-ray outlet but also supports the cathode and anode assemblies. Because the tube core rotates at high speed during normal operation, a significant amount of heat is transferred to the window body. Existing window bodies are mostly 0.2 mm thick. Consequently, after a period of use, the window body will wrinkle and deform to varying degrees due to the torque and heat from the rotation. This can cause the coaxiality of the cathode and anode assemblies inside the housing to change, shortening the life of the tube core.

[0029] Furthermore, the existing window bodies are generally thicker at both ends and thinner in the middle, which increases the difficulty of processing. Furthermore, due to the high manufacturing process requirements, the window body scrap rate is significantly increased, which increases economic costs.

[0030] In view of this, the present application provides an X-ray tube. The X-ray tube includes a housing 10, and a cathode assembly 20 and an anode assembly 30 respectively disposed at two ends of the housing 10. The X-ray tube also includes a window body 40 disposed between the housing 10 and the anode assembly 30.

[0031] The window body 40 is an annular structure and includes a connecting portion 410 and a protruding portion 420. The protruding portion 420 is thicker than the connecting portion 410 and has a thickness greater than or equal to 2 mm.

[0032] Thus, when the connecting portion 410 is fixedly connected to the housing 10, the thickness of the raised portion 420 of the window body 40 corresponds to the combined thickness of the housing 10 and the connecting portion 410. In other words, unlike the prior art, even when the die rotates at high speed or a large amount of heat is conducted to the window body 40, the window body 40 will not wrinkle or deform due to the excessive thickness of the raised portion 420, thereby extending the service life of the die.

[0033] In addition, the embodiment of the present application uses beryllium aluminum alloy material as the window body 40, which has a tensile strength of 524-670 MPa, a yield strength of 479-516 MPa, and a density of 2.1 g / cm 3 This material has the advantages of low density, good thermal conductivity, good vibration resistance, thermal stability, corrosion resistance, high fracture toughness, high fatigue resistance, high strength and high toughness, combining the excellent properties of beryllium's low density and aluminum's easy processing.

[0034] Furthermore, since beryllium aluminum alloy has good X-ray transmittance, the wall thickness can be increased to enhance the physical properties at the position of the window body 40 without affecting the X-ray transmittance, thereby improving the mechanical strength of the tube core.

[0035] Thus, the window body provided by the present application can achieve the goal of preventing wrinkles or deformation caused by high-speed rotation of the tube core or large amounts of heat while ensuring normal operation, thereby extending the life of the tube core. This solves the technical problem in the prior art of how to solve the problem of how to solve the problem of the window body of the existing X-ray tube being too thin, which makes the window body prone to wrinkling and deformation to varying degrees when the tube core rotates at high speed or when a large amount of heat is transferred to the window body, thereby shortening the life of the tube core.

[0036] Preferably, the grade of the beryllium aluminum alloy is LX-62.

[0037] Optionally, the connecting portion 410 includes: a first connecting portion 411 and a second connecting portion 412 , wherein the first connecting portion 411 is fixedly connected to the housing 10 ; and the second connecting portion 412 is fixedly connected to the anode assembly 30 .

[0038] Specifically, refer to Figure 1 、 Figure 2A and Figure 2B As shown, the connecting portion 410 includes a first connecting portion 411 and a second connecting portion 412. The first connecting portion 411 is fixedly connected to the housing 10, such that the sum of the thickness of the first connecting portion 411 and the thickness of the housing 10 corresponds to the thickness of the raised portion 420. The second connecting portion 412 is fixedly connected to the anode assembly 30, and the sum of the thickness of the second connecting portion 412 and the thickness at the edge of the anode assembly 30 corresponds to the thickness of the raised portion 420. Therefore, even if a large amount of heat is generated at the position corresponding to the window body 40 or the tube die rotates at high speed, the normal operation of the window body 40 will not be affected, and the window body 40 will not be wrinkled or deformed.

[0039] Optionally, the first connection portion 410 is fixedly connected to the housing 10 by laser welding, and the second connection portion 420 is fixedly connected to the anode assembly 30 by laser welding.

[0040] Specifically, refer to Figure 1 、 Figure 2A and Figure 2B As shown, the first connection portion 410 of the window body 40 is fixedly connected to the housing 10 by laser welding, and the second connection portion 420 of the window body 40 is fixedly connected to the anode assembly 30 by laser welding. Thus, the housing 10 and the anode assembly 30 are fixedly connected by laser welding, thereby achieving the technical effect of ensuring the vacuum tightness of the X-ray tube.

[0041] According to another aspect of the present application, a window body 40 for an X-ray tube is provided, wherein the window body 40 includes: a connecting portion 410 and a protruding portion 420, wherein the connecting portion 410 is connected to the protruding portion 420, and wherein the thickness of the protruding portion 420 is greater than the thickness of the connecting portion 410, and the thickness of the protruding portion 420 is greater than or equal to 2 mm; and the window body 40 is made of beryllium aluminum alloy.

[0042] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0043] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0044] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0045] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An X-ray tube, comprising: A housing (10), and a cathode assembly (20) and an anode assembly (30) respectively arranged at both ends of the housing (10), characterized in that it also includes: a window body (40) fixedly connected between the housing (10) and the anode assembly (30), wherein The window body (40) includes a connecting portion (410) and a protruding portion (420), wherein the connecting portion (410) is connected to the protruding portion (420), and wherein The thickness of the raised portion (420) is greater than the thickness of the connecting portion (410), and the thickness of the raised portion (420) is greater than or equal to 2 mm; and The window body (40) is made of beryllium aluminum alloy.

2. The X-ray tube according to claim 1, wherein The connecting portion (410) includes a first connecting portion (411) and a second connecting portion (412), wherein The first connecting portion (411) is fixedly connected to the housing (10); and The second connecting portion (412) is fixedly connected to the anode assembly (30).

3. The X-ray tube according to claim 2, wherein The first connection portion (411) is fixedly connected to the housing (10) by laser welding, and the second connection portion (412) is fixedly connected to the anode assembly (30) by laser welding.

4. A window body (40) for an X-ray tube, characterized in that: The window body (40) includes: a connecting portion (410) and a protruding portion (420), wherein the connecting portion (410) is connected to the protruding portion (420), and wherein The thickness of the raised portion (420) is greater than the thickness of the connecting portion (410), and the thickness of the raised portion (420) is greater than or equal to 2 mm; and The window body (40) is made of beryllium aluminum alloy.

5. The window body (40) for an X-ray tube according to claim 4, characterized in that: The connecting portion (410) includes a first connecting portion (411) and a second connecting portion (412), wherein The first connecting portion (411) is connected to the housing (10); and The second connecting portion (412) is connected to the anode assembly (30).

6. The window body (40) for an X-ray tube according to claim 5, characterized in that: The first connection portion (411) is fixedly connected to the housing (10) by welding, and the second connection portion (412) is fixedly connected to the anode assembly (30) by welding.

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