Filament aim point adjusting tool

Abstract

The utility model provides a filament aim point adjusting tool which is used for adjusting the position of a filament in a cathode unit of an X-ray source, the filament aim point adjusting tool comprises a first mounting seat, a second mounting seat and a display device, the first mounting seat forms a mounting cavity used for fixing the cathode unit, the second mounting seat is connected to the first mounting seat, and the display device is arranged on the second mounting seat. The second mounting seat is positioned on the outer side of the electrode cap and is provided with an adjusting window; the adjusting window corresponds to the position of an adjusting bolt of the cathode unit; the display device is detachably connected to the second mounting base, image information of the electrode cap at the through hole can be amplified and displayed through the display window of the display device, so that the relative position of the lamp filament and the through hole can be obtained, and when the aim point degree of the lamp filament of the cathode unit does not meet the requirement, a user can operate the adjusting bolt through the adjusting window to adjust the aim point degree of the lamp filament. And adjusting the position of the filament in real time until the aim point degree of the filament meets the requirement.

Description

Technical Field

[0001] This utility model generally relates to the field of X-ray source production equipment, and more specifically to a filament collimator adjustment fixture. Background Technology

[0002] An X-ray source is a device that generates X-rays. The component in an X-ray source that produces thermionic emission through heating with an electric current is the filament. As the filament is used continuously, the metal atoms within it gradually wear down due to the high temperature and electron emission process. Generally, when the filament's resistance increases to a certain level, or its ability to emit electrons decreases significantly, resulting in excessively low X-ray generation efficiency, the filament needs to be replaced. Furthermore, the filament may be damaged due to unforeseen circumstances, also requiring replacement.

[0003] During the use of an X-ray source, it is essential to ensure that the centers of the filament and the hole in the perforated component are aligned. If the filament's installation position deviates from the center of the hole, the emitted X-rays will not meet expectations, affecting the uniformity of the X-ray intensity distribution, reducing the X-ray source's resolution, and causing energy loss during focusing, thus reducing the utilization rate of the X-rays and failing to achieve high-precision focusing of the target. When an X-ray source is used in medical X-ray imaging equipment, if the filament is not properly aligned, the emitted X-ray beam will deviate from the ideal central axis direction. In industrial non-destructive testing, uneven X-ray intensity distribution may affect normal imaging, causing defects in certain areas to be undetectable. In the process of developing this application, the inventors discovered at least the following problems in the prior art:

[0004] When replacing the filament, users need to repeatedly disassemble the X-ray source to adjust the position of the test filament and verify its alignment by measuring the focusing of the X-rays emitted by the source. However, this process is time-consuming. To ensure filament alignment and improve the efficiency of X-ray source filament replacement, users often choose to directly replace the entire cathode unit (including pre-installed perforated components and filament), which is costly and wasteful of resources.

[0005] Therefore, there is a need to provide a filament alignment adjustment fixture to at least partially solve the above problems. Utility Model Content

[0006] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0007] To at least partially solve the above problems, this utility model provides a filament collimation adjustment fixture for adjusting the position of the filament in the cathode unit of an X-ray source. The cathode unit includes an electrode cap, a filament, an electrode cover, and a locking nut arranged sequentially along the axial direction. The electrode cap covers the electrode cover and is threadedly connected to the locking nut to lock the electrode cover in the axial direction. The electrode cap has a through hole extending along the axial direction. The filament is installed on the electrode cover and faces the through hole. The filament is electrically connected to a conductive pin installed on the electrode cover. The conductive pin passes through the central hole of the locking nut. The electrode cap also has multiple adjusting bolts. The adjusting bolts are threaded radially and threadedly connected to the electrode cap to abut against the inner electrode cover. The filament collimation adjustment fixture includes:

[0008] A first mounting base has a mounting cavity for fixing the cathode unit, and the electrode cap is partially located in the mounting cavity and is clamped to the first mounting base;

[0009] A second mounting base, connected to the first mounting base and located outside the electrode cap, the second mounting base having an adjustment window, wherein when the second mounting base is connected to the first mounting base, the adjustment window corresponds to the position of the adjustment bolt; and

[0010] A display device is detachably connected to the second mounting base, the display device having a display window, the display device being configured to acquire image information of the electrode cap at the through hole and display it in magnified form in the display window.

[0011] Optionally, the second mounting base is cylindrical in shape, coaxially sleeved to the first mounting base, and configured to rotate relative to the first mounting base about its own axis.

[0012] Optionally, the display device is coaxially connected to the second mounting base.

[0013] Optionally, the display window is a circular window, and when the cathode unit is installed on the filament collimation adjustment fixture, the through holes are concentrically distributed in the imaging of the display window and the display window.

[0014] Optionally, the display window is provided with reference markers, which include a center reference marker and a through-hole contour reference marker.

[0015] Optionally, the reference identifier is pasted into the display window.

[0016] Optionally, the first mounting base is provided with a positioning socket in the mounting cavity, and when the cathode unit is installed on the first mounting base, the positioning socket is used to engage with the conductive pin.

[0017] Optionally, the second mounting base has a plurality of adjustment windows, the positions of which correspond one-to-one with the positions of the adjustment bolts; and / or

[0018] A crown spring is installed inside the socket of the positioning socket.

[0019] Optionally, the display device is configured as a magnifying glass.

[0020] Optionally, the display device includes:

[0021] An image acquisition module, wherein the image acquisition device is located vertically above the through hole, and is used to acquire an image at the location of the through hole; and

[0022] An image display module is electrically connected to the image acquisition module and is used to acquire image information from the image acquisition module and display it in a magnified manner.

[0023] This invention provides a filament alignment adjustment fixture, wherein a first mounting base forms a mounting cavity for fixing a cathode unit, which can clamp the electrode cap portion of the cathode unit that needs alignment adjustment. A second mounting base located outside the electrode cap can be used to mount a display device. The image information of the electrode cap at the through hole can be magnified and displayed in the display window of the display device, thereby obtaining the relative position of the filament and the through hole. Furthermore, the second mounting base forms an adjustment window corresponding to the position of the adjustment bolt. When the position of the filament is observed to deviate from the center of the through hole, the adjustment bolt can be operated through the adjustment window in a timely manner to adjust the position of the filament in real time until the alignment of the filament meets the requirements.

[0024] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0025] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0026] Figure 1 This is a schematic diagram of the filament alignment adjustment fixture according to a preferred embodiment of the present invention;

[0027] Figure 2 for Figure 1 A cross-sectional structural diagram of the filament aiming adjustment fixture;

[0028] Figure 3 for Figure 2 A partially enlarged structural diagram of the filament alignment tool; and

[0029] Figure 4 This is a schematic diagram of the display window of the filament aiming adjustment fixture according to this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Filament alignment adjustment fixture; 110. First mounting base; 111. Mounting cavity; 112. First step; 113. Positioning socket; 120. Second mounting base; 121. Adjustment window; 122. Second step; 130. Display device; 131. Display window; 132. Center reference mark; 133. Through hole outline reference mark; 200. Cathode unit; 210. Electrode cap; 211. Through hole; 212. Adjusting bolt; 220. Filament; 230. Electrode cover; 240. Locking nut; 250. Conductive pin; D. Axial direction; AX. Axis. Detailed Implementation

[0032] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0033] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments and should not be construed as being limited to the embodiments set forth herein.

[0034] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of the invention. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated feature, integral, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms “upper,” “lower,” “front,” “rear,” “left,” “right,” and similar expressions used in this invention are for illustrative purposes only and are not intended to be limiting.

[0035] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0036] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0037] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0038] The following will refer to the appendix. Figures 1 to 4 The specific embodiments of this utility model will be described in more detail below. These accompanying drawings illustrate representative embodiments of this utility model and are not intended to limit the scope of this utility model.

[0039] This utility model provides a filament collimator adjustment fixture 100 for adjusting the position of the filament 220 in the cathode unit 200 of an X-ray source.

[0040] To facilitate understanding this solution, please refer to the following: Figure 3 The structure of the cathode unit 200 adjusted by the filament collimator adjustment fixture 100 of this utility model will be briefly described. For example... Figure 3 As shown, the cathode unit 200 includes an electrode cap 210, a filament 220, an electrode cover 230, and a locking nut 240 arranged sequentially along the axial direction.

[0041] The filament 220 is mounted to the electrode cover 230, and the electrode cover 230 is also equipped with a conductive pin 250 electrically connected to the filament 220. The electrode cover 230, filament 220, and conductive pin 250 are integrated and installed within the receiving cavity of the electrode cap 210. The electrode cap 210 covers the electrode cover 230 and is threadedly connected to a locking nut 240 to lock the electrode cover 230 in the axial direction D. The electrode cap 210 has a through hole 211 extending along the axial direction D. Figure 3 In the middle, the through hole 211 is located in the direction away from the locking nut 240.

[0042] When the electrode cap 230 is installed onto the electrode cap 210, the filament 220 is located on the side facing the through hole 211, the conductive pin 250 is located on the side facing the locking nut 240, and the conductive pin 250 passes through the center hole of the locking nut 240.

[0043] The electrode cap 210 is also provided with multiple adjusting screws 212 (see Figure 1 Adjusting bolts 212 extend radially and are threaded to electrode caps 210. Multiple adjusting bolts 212 are spaced apart around the central axis of cathode unit 200. By tightening the adjusting bolts 212 against the electrode cap 230 inside the receiving cavity, the electrode cap 230 can be locked in the radial direction.

[0044] refer to Figures 1 to 3 The filament alignment adjustment fixture 100 includes a first mounting base 110, a second mounting base 120, and a display device 130. The first mounting base 110 has a mounting cavity 111. When using the filament alignment adjustment fixture 100, the electrode cap 210 is partially located in the mounting cavity 111 and is locked with the first mounting base 110, thereby fixing the cathode unit 200.

[0045] The second mounting base 120 is connected to the first mounting base 110 and is located outside the electrode cap 210. The second mounting base 120 has an adjustment window 121 (see Figure 1 and Figure 2 When the second mounting base 120 is connected to the first mounting base 110, the position of the adjustment window 121 corresponds to the position of the adjustment bolt 212. The adjustment bolt 212 can be operated through the adjustment window 121 to adjust the position of the electrode cover 230 inside the electrode cap 210, thereby changing the relative position of the filament 220 and the through hole 211 on the electrode cap 210, and realizing the aiming adjustment.

[0046] The display device 130 is detachably connected to the second mounting base 120, for example, by a snap-fit ​​connection or a threaded connection. The display device 130 has a display window 131, configured to acquire image information of the electrode cap 210 at the through hole 211 and display it magnified in the display window 131. This allows the user to observe the alignment of the filament 220 while simultaneously adjusting it in real time using the adjusting screw 212 until the alignment of the filament 220 reaches the required level.

[0047] See Figure 2 The cathode unit 200 is installed in the mounting cavity 111 of the first mounting base 110, and the portion of the electrode cap 210 including the through hole 211 and the adjusting bolt 212 is located outside the mounting cavity 111. The mounting cavity 111 is generally constructed in a cylindrical shape that conforms to the outer contour of the electrode cap 210.

[0048] Furthermore, to better secure the cathode unit 200, a positioning socket 113 is provided at the bottom of the mounting cavity 111. When the cathode unit 200 is installed onto the first mounting base 110, the positioning socket 113 and the conductive pin 250 are engaged (see...). Figure 2 and Figure 3 The positioning socket 113 can extend into the center hole of the locking nut 240 and engage with the conductive pin 250. Preferably, the size of the socket of the positioning socket 113 is slightly larger than the size of the conductive pin 250, and a crown spring is provided in the socket of the positioning socket 113. The crown spring achieves a reliable connection with the conductive pin 250, and the elastic deformation of the crown spring absorbs the displacement of the pin in the radial direction.

[0049] refer to Figure 3 The bottom of the first mounting base 110 is provided with a socket, and the positioning socket 113 is plugged into and fixed to the first mounting base 110.

[0050] See Figure 1 , Figure 2 and Figure 3 The display device 130 is coaxially connected to the second mounting base 120. The second mounting base 120 is cylindrical in shape and is coaxially connected to the first mounting base 110, and is configured to rotate relative to the first mounting base 110 about its own axis AX.

[0051] The top of the first mounting base 110 is provided with a first step portion 112 for engaging and locking with the bottom of the second mounting base 120. The top of the second mounting base 120 is provided with a second step portion 122 for engaging with the display device.

[0052] refer to Figure 4The display window 131 is a circular window. When the cathode unit 200 is installed on the filament collimation adjustment fixture 100, the imaging of the through hole 211 in the display window 131 is concentrically distributed with the display window 131. The display window 131 is also provided with reference marks, including a center reference mark 132 and a through hole outline reference mark 133, to improve the convenience of use for users.

[0053] Optionally, the reference marker can be pasted into display window 131. See also Figure 2 and Figure 3 The second mounting base 120 has multiple adjustment windows 121. When the filament aiming adjustment fixture 100 is in use, the positions of the adjustment windows 121 and the adjustment bolts 212 correspond one-to-one for easy adjustment.

[0054] Preferably, the plurality of adjustment windows 121 are evenly distributed at intervals around the central axis AX of the second mounting base 120.

[0055] See Figure 1 and Figure 2 In this embodiment, the display device 130 is constructed as a magnifying glass. When the filament aiming adjustment fixture 100 is in use, the magnifying glass is located directly above the through hole 211, and the display window 131 is approximately parallel to the plane where the through hole 211 is located.

[0056] Preferably, the magnifying glass is a magnifying glass with adjustable magnification.

[0057] It is understood that in other embodiments not shown in this utility model, the display device 130 may be configured to include an image acquisition module and an image display module. The image acquisition device is located vertically above the through-hole 211 and is used to acquire images at the location of the through-hole 211. The image display module is electrically connected to the image acquisition module and is used to acquire image information from the image acquisition module and display it in a magnified manner.

[0058] For example, the image acquisition module can be an image acquisition device or a video acquisition device, such as a camera, and the image display module can be a host computer with a display screen. It is understood that the advantages of this implementation include the ability to further adjust the magnification of the image information through image processing.

[0059] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0060] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A filament centering adjustment tool for adjusting the position of a filament in a cathode unit of an X-ray source, the cathode unit comprising, in axial succession, an electrode cap, a filament, an electrode cover and a locking nut, the electrode cap being arranged outside the electrode cover and being threadedly connected to the locking nut to axially lock the electrode cover, the electrode cap being provided with a through hole extending in the axial direction, the filament being mounted to the electrode cover and facing the through hole, the filament being electrically connected to an electrically conductive pin mounted to the electrode cover, the electrically conductive pin extending out of a central hole of the locking nut, the electrode cap being further provided with a plurality of adjustment bolts extending in a radial direction and being threadedly connected to the electrode cap to abut against the electrode cover on the inside, characterized in that, The filament centering adjustment tool comprises: a first mounting base, which is formed with a mounting cavity for fixing the cathode unit, and the electrode cap is partially located in the mounting cavity and clamped with the first mounting base; a second mounting base, which is connected to the first mounting base and located outside the electrode cap, and the second mounting base is formed with an adjustment window corresponding to the position of the adjustment screw when the second mounting base is connected to the first mounting base; and a display device, which is detachably connected to the second mounting base, and the display device has a display window and is configured to obtain image information of the electrode cap at the through hole and display in magnification at the display window.

2. The filament centering adjustment tool of claim 1, wherein, The second mounting base is configured in a cylindrical shape, coaxially sleeved to the first mounting base, and configured to rotate relative to the first mounting base around its own axis.

3. The filament centering adjustment tool of claim 2, wherein, The display device is coaxially sleeved to the second mounting base.

4. The filament centering adjustment tool of claim 3, wherein, The display window is a circular window, and the through hole and the display window are concentrically distributed when the cathode unit is mounted to the filament centering adjustment tool.

5. The filament centering adjustment tool of claim 4, wherein, The display window is provided with reference marks, which include a center reference mark and a through hole contour reference mark.

6. The filament centering adjustment tool of claim 5, wherein, The reference marks are pasted to the display window.

7. The filament centering adjustment tool of any one of claims 1 to 6, wherein, The first mounting base is provided with a positioning socket in the mounting cavity, which is used for plug-in cooperation with the conductive pin when the cathode unit is mounted to the first mounting base.

8. The filament centering adjustment tool of claim 7, wherein, The second mounting base is formed with a plurality of adjustment windows corresponding to the positions of the adjustment screws one by one; and / or A crown spring is arranged in the socket of the positioning socket.

9. The filament centering adjustment tool of claim 8, wherein, The display device is configured as a magnifying glass.

10. The filament centering adjustment tool of claim 8, wherein, The display device comprises: an image acquisition module, which is located vertically above the through hole and used for acquiring images at the position of the through hole; and an image display module, which is electrically connected to the image acquisition module and used for obtaining image information of the image acquisition module and displaying in magnification.

Images