阅读说明：本技术 一种用于x射线管的误差校正装置及其使用方法 (Error correction device for X-ray tube and use method thereof ) 是由 张桥杰 龚海华 王鹏 王瑞海 于 2021-08-07 设计创作，主要内容包括：本发明提供一种用于X射线管的误差校正装置及其使用方法,该误差校正装置包括用于与外管套结合固定的第一转轮；以及用于与X射线管结合固定的可相对于第一转轮转动的第二转轮；所述第一轮与第二转轮同轴设置且通过一转轴连接；所述第一转轮以及第二转轮均可绕转轴转动；所述第二转轮被配置为可带动X射线管相对于外管套转动以校正X射线管射线束发射角度的角度偏差。该误差校正装置能够在补偿射线束角度偏差的同时,完成X射线管在外管套中的精准定位与安装。(The invention provides an error correction device for an X-ray tube and a using method thereof, wherein the error correction device comprises a first rotating wheel, a second rotating wheel and a third rotating wheel, wherein the first rotating wheel is used for being combined and fixed with an outer sleeve; and a second wheel fixed for association with the X-ray tube and rotatable relative to the first wheel; the first wheel and the second rotating wheel are coaxially arranged and are connected through a rotating shaft; the first rotating wheel and the second rotating wheel can rotate around the rotating shaft; the second wheel is configured to rotate the X-ray tube relative to the outer jacket to correct angular deviations in the angle of emission of the X-ray tube beam. The error correction device can compensate the angle deviation of the ray beams and complete the accurate positioning and installation of the X-ray tube in the outer tube sleeve.)

1. An error correction device for an X-ray tube, comprising:

the first rotating wheel is used for being combined and fixed with the outer pipe sleeve; and

a second wheel fixed for combination with the X-ray tube and capable of rotating relative to the first wheel;

the first wheel and the second rotating wheel are coaxially arranged and are connected through a rotating shaft;

the first rotating wheel and the second rotating wheel can rotate around the rotating shaft;

the second wheel is configured to rotate the X-ray tube relative to the outer jacket to correct angular deviations in the angle of emission of the X-ray tube beam.

2. The error correction device of claim 1, wherein the first wheel comprises a first outer profile, a first central portion, and a plurality of first connection portions connecting the first outer profile and the first central portion; the second rotating wheel comprises a second outline part, a second central part and a plurality of second connecting parts for connecting the second outline part and the second central part; the first rotating wheel is positioned above the second rotating wheel, and the inner diameter of the first rotating wheel is larger than the outer diameter of the second rotating wheel.

3. The error correction device of claim 2, wherein the first wheel further comprises a pointer extending outwardly from the first central portion; and a dial which is correspondingly matched with the outer end part of the pointer is arranged on the surface of the top wall of the second connecting part of the second rotating wheel.

4. The error correction device according to claim 3, wherein the first wheel comprises four first connecting portions and two fingers, an included angle between two adjacent first connecting portions is 90 °, and an included angle between two fingers is 180 °; the second rotating wheel comprises six second connecting parts and two dials, and the included angle between every two adjacent second connecting parts is 60 degrees.

5. The error correction device for an X-ray tube of claim 2, wherein the first central portion includes a first central aperture therein and the second central portion includes a second central aperture therein; the rotating shaft comprises a main body part and a boss part integrally formed with the main body part; the main body part comprises a third central hole, and the main body part sequentially penetrates through the second central hole and the first central hole; the boss portion abuts against the second center portion.

6. The error correction device for an X-ray tube according to claim 2, wherein the first profile includes a plurality of first positioning holes equidistantly arranged along a circumferential direction of the first profile, the plurality of first positioning holes corresponding to the mounting holes provided on the edge of the mounting port at the upper end of the outer sleeve, so that the first rotor is coaxially mounted with the outer sleeve; the second outline part comprises a plurality of second positioning holes; the first rotating wheel is fixedly combined with the outer pipe sleeve through a bolt; the second rotating wheel is fixedly combined with the X-ray tube through the upright post.

7. The error correction device for an X-ray tube according to claim 3, wherein the pointer includes a needle body portion connected to the first center portion and a tip portion, and a width of the needle body portion of the pointer is the same as a width of the second connecting portion.

8. A method of using an error correction apparatus, comprising:

combining and fixing the second rotating wheel with the X-ray tube;

placing the second rotating wheel and the X-ray tube into the inner cavity of the outer sleeve along the vertical direction;

combining and fixing the first rotating wheel with the outer pipe sleeve;

providing a correction angle theta, and rotating the second rotating wheel to enable the second rotating wheel to drive the X-ray tube to rotate in the outer sleeve, so that the X-ray tube rotates relative to the outer sleeve by the angle theta;

positioning and installing an X-ray tube in an inner cavity of an outer sleeve;

the error correction device is separated from the X-ray tube and the outer envelope.

9. Use according to claim 8, wherein the second wheel is screwed and coaxially arranged with the X-ray tube; the first rotating wheel is in threaded connection with the outer pipe sleeve and is coaxially arranged.

10. The use method according to claim 8, wherein the second wheel comprises a dial, the first wheel comprises a pointer, and the second wheel is rotated so that the outer end of the pointer points to the correction angle θ on the dial.

Technical Field

The invention relates to the technical field of medical instruments. And more particularly, to an error correction apparatus for an X-ray tube and a method of using the same.

Background

X-ray tubes are used in a variety of industrial and medical applications, such as in the fields of medical diagnostic examinations, therapeutic radiation, semiconductor manufacturing, and material analysis. X-rays are high frequency electromagnetic radiation that are accelerated towards an anode by applying an electric current to the cathode to cause electrons to be emitted from the cathode by thermionic emission, which electrons may collide with the anode when they strike the anode to produce X-rays, the area on the anode where the electrons collide being commonly referred to as the focal point.

When the X-ray generated by the collision of the electrons and the anode irradiates a detection object, the intensity of the X-ray is attenuated, and finally the X-ray is received by the detector, and the radiation change is converted into an image by the control system for evaluating the internal structure and the change of the object.

Before irradiating the detection object, the X-ray firstly penetrates through the insulating oil layer, then penetrates through the window of the outer sleeve and then enters the air layer. Due to manufacturing and assembly errors of the X-ray tube itself, the X-ray beam cannot be transmitted along the normal of the oil-window-air layer, but is refracted at the oil-window-air layer. When X-rays are transmitted to the outer sleeve window from the oil layer, the material of the outer sleeve window does not cause the X-rays to generate obvious refraction, and the thickness of the outer sleeve window is thinner, so that the outer sleeve window is an intermediate medium in the whole refraction process and has small influence on the refraction result. Therefore, the axis of the X-ray beam forms an included angle with the normal line of the oil-air layer, and the two sides of the oil-air layer are respectively an incident angle and a refraction angle. When the deviation of the emission direction of the X-ray tube ray beam is large, the whole machine verification test link of the X-ray tube cannot be smoothly carried out, and even the product is discarded or scrapped.

Disclosure of Invention

In view of the above problems, it is an object of the present invention to provide an error correction device for an X-ray tube, which can perform precise positioning and mounting of the X-ray tube in an outer tube housing while compensating for angular deviation of the beam.

In order to achieve the purpose, the invention adopts the following technical scheme:

the present invention provides an error correction device for an X-ray tube, including:

the first rotating wheel is used for being combined and fixed with the outer pipe sleeve; and

a second wheel fixed for combination with the X-ray tube and capable of rotating relative to the first wheel;

the first wheel and the second rotating wheel are coaxially arranged and are connected through a rotating shaft;

the first rotating wheel and the second rotating wheel can rotate around the rotating shaft;

the second wheel is configured to rotate the X-ray tube relative to the outer jacket to correct angular deviations in the angle of emission of the X-ray tube beam.

In addition, it is preferable that the first wheel includes a first outer profile portion, a first central portion, and a plurality of first connection portions connecting the first outer profile portion and the first central portion; the second rotating wheel comprises a second outline part, a second central part and a plurality of second connecting parts for connecting the second outline part and the second central part; the first rotating wheel is positioned above the second rotating wheel, and the inner diameter of the first rotating wheel is larger than the outer diameter of the second rotating wheel.

In addition, preferably, the first wheel further comprises a pointer extending outwards from the first central part; and a dial which is correspondingly matched with the outer end part of the pointer is arranged on the surface of the top wall of the second connecting part of the second rotating wheel.

In addition, preferably, the first rotating wheel comprises four first connecting parts and two pointers, an included angle between every two adjacent first connecting parts is 90 degrees, and an included angle between every two pointers is 180 degrees; the second rotating wheel comprises six second connecting parts and two dials, and the included angle between every two adjacent second connecting parts is 60 degrees.

In addition, it is preferable that the first central portion includes a first central hole, and the second central portion includes a second central hole; the rotating shaft comprises a main body part and a boss part integrally formed with the main body part; the main body part comprises a third central hole, and the main body part sequentially penetrates through the second central hole and the first central hole; the boss portion abuts against the second center portion.

In addition, preferably, the first profile part comprises a plurality of first positioning holes which are equidistantly arranged along the circumferential direction of the first profile part, and the plurality of first positioning holes correspond to the mounting holes arranged on the edge of the mounting port at the upper end of the outer pipe sleeve, so that the first rotating wheel and the outer pipe sleeve are coaxially mounted; the second outline part comprises a plurality of second positioning holes; the first rotating wheel is fixedly combined with the outer pipe sleeve through a bolt; the second rotating wheel is fixedly combined with the X-ray tube through the upright post.

Furthermore, it is preferable that the pointer includes a needle body portion connected to the first central portion and a needle tip portion, and a width of the needle body portion of the pointer is the same as a width of the second connecting portion.

Another object of the present invention is to provide a method for using an error correction apparatus, including:

combining and fixing the second rotating wheel with the X-ray tube;

placing the second rotating wheel and the X-ray tube into the inner cavity of the outer sleeve along the vertical direction;

combining and fixing the first rotating wheel with the outer pipe sleeve;

providing a correction angle theta, and rotating the second rotating wheel to enable the second rotating wheel to drive the X-ray tube to rotate in the outer sleeve, so that the X-ray tube rotates relative to the outer sleeve by the angle theta;

positioning and installing an X-ray tube in an inner cavity of an outer sleeve;

the error correction device is separated from the X-ray tube and the outer envelope.

Furthermore, it is preferable that the second rotor is screwed to the X-ray tube and is coaxially disposed; the first rotating wheel is in threaded connection with the outer pipe sleeve and is coaxially arranged.

Further, it is preferable that the second wheel includes a dial, the first wheel includes a pointer, and the second wheel is rotated so that an outer end portion of the pointer points to the correction angle θ on the dial.

The invention has the beneficial effects that:

the X-ray tube is driven by the second rotating wheel to rotate relative to the outer sleeve to correct the angle deviation of the emission angle of the X-ray beam of the X-ray tube, so that the assembly of the X-ray tube and the outer sleeve is accurately, efficiently and accurately completed, the safety and the reliability are high, the operability is strong, and the labor intensity of workers is reduced; and the problem that the focus position deviation amount of the medical CT bulb tube is too large or cannot be aligned in the whole machine testing link can be solved, and the labor intensity of workers is reduced.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the first rotor of the present invention.

Fig. 3 is a schematic view of the structure of the second wheel of the present invention.

Fig. 4 is a schematic structural view of the rotating shaft of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

The problem that the emission direction deviation of X-ray tube ray beams is large is solved. The present invention provides an error correction device for an X-ray tube, specifically comprising, as shown in fig. 1 to 4: a first rotary wheel 10 for fixing in combination with the outer jacket 50; and a second rotor 20 fixed for combination with the X-ray tube 40 to be rotatable with respect to the first rotor 10; the first wheel and the second rotating wheel 20 are coaxially arranged and are connected through a rotating shaft 30; the first runner 10 and the second runner 20 are both rotatable about a rotation shaft 30; the second wheel 20 is configured to rotate the X-ray tube 40 relative to the outer jacket 50 to correct angular deviations of the angle of emission of the X-ray beam from the X-ray tube 40. By combining and fixing the first runner 10 and the outer jacket 50, the second runner 20 drives the X-ray tube 40 to rotate relative to the first runner 10 and the outer jacket 50, so as to correct the angular deviation of the ray beam emission angle of the X-ray tube 40 according to the provided correction angle theta and complete the accurate positioning and assembling of the X-ray tube 40 and the outer jacket 50.

It will be appreciated that the X-ray tube 40, as a medical instrument, needs to be fitted into the outer jacket 50 for use during normal use. The upper end of the outer sleeve 50 comprises a mounting port 51, the outer sleeve 50 further comprises a window 52, theoretically, when the X-ray tube 40 and the outer sleeve 50 are mounted, the X-ray emitting port of the X-ray tube 40 and the window 52 are required to be arranged coaxially, the invention does not relate to how to measure the correction angle theta, but utilizes the correction angle theta to adjust the circumferential angle of the X-ray tube 40 to solve the manufacturing error of the X-ray tube 40, so that X-ray beams can be transmitted along the normal of an oil-window-air layer, and on the basis of obtaining the correction angle theta required when the X-ray tube 40 and the outer sleeve 50 are assembled, the invention provides an error correction device for the X-ray tube 40, which can finish the accurate positioning and mounting of the X-ray tube 40 in the outer sleeve 50.

In an alternative embodiment, the first wheel 10 comprises a first profile 11, a first central portion 12 and a plurality of first connecting portions 13 connecting the first profile 11 and the first central portion 12; the second runner 20 comprises a second outline part 21, a second central part 22 and a plurality of second connecting parts 23 for connecting the second outline part 21 and the second central part 22; the first rotor 10 is located above the second rotor 20 and the inner diameter of the first rotor 10 is larger than the outer diameter of the second rotor 20 to fit the X-ray tube 40 with the outer jacket 50.

In this embodiment, the first wheel 10 further includes a pointer 14 extending outward from the first central portion 12; the second connecting portion 23 of the second wheel 20 includes a dial 24 on a top wall surface thereof for correspondingly engaging an outer end portion of the pointer 14. After the correction angle theta is obtained, the adjustment is completed by rotating the second rotating wheel 20 to enable the pointer 14 to point to a corresponding angle on the dial 24, so that the adjustment and correction are more accurate, the operation is simpler, and the rotating angle is more intuitive.

Referring to fig. 2 and 3, further, the first rotating wheel 10 includes four first connecting portions 13 and two pointers 14, an included angle between two adjacent first connecting portions 13 is 90 °, and an included angle between two pointers 14 is 180 °; the second runner 20 is including six second connecting portions 23 and two calibrated scales 24, and the contained angle of two adjacent second connecting portions 23 makes first runner 10 more firm can bear the weight of second runner 20 and X-ray tube 40 simultaneously for four first connecting portions 60, and the contained angle equals between the adjacent connecting portion to make the runner atress more even, and two sets of pointers 14 and calibrated scales 24 are convenient for operating personnel to observe the operation from different directions, save operating space.

With regard to the manner in which the first rotor 10 cooperates with the second rotor 20, in particular, the first center portion 12 includes a first center hole 15, and the second center portion 22 includes a second center hole 25; referring to fig. 4, the rotation shaft 30 includes a main body portion 31 and a boss portion 32 integrally formed with the main body portion 31; the main body part 31 comprises a third central hole 33, and the main body part 31 sequentially penetrates through the second central hole 25 and the first central hole 15; the boss portion 32 abuts against the second center portion 22. It should be noted that both the first runner 10 and the second runner 20 are rotatable with respect to the rotation shaft 30, but since the outer jacket 50 is heavy, the outer jacket 50 is usually fixed to adjust the X-ray tube 40, but the present invention is not limited thereto, and a bolt whose head prevents the first runner 10 and the second runner 20 from falling off from the rotation shaft 30 is disposed in the third center hole 33.

In a specific embodiment, the first profile 11 includes a plurality of first positioning holes 16 equidistantly arranged along a circumferential direction of the first profile 11, the plurality of first positioning holes 16 correspond to mounting holes provided on an edge of a mounting port 51 at an upper end of the outer sleeve 50, so that the first rotor 10 is coaxially mounted with the outer sleeve 50, and the second profile 21 includes a plurality of second positioning holes; the first runner 10 is fixedly combined with the outer sleeve 50 through bolts; the second wheel 20 is fixed by a column in combination with the X-ray tube 40. Specifically, the plurality of first positioning holes 16 are equidistantly arranged, bolts penetrate through the first positioning holes 16 to combine and fix the first rotating wheel 10 and the outer sleeve 50, and the first rotating wheel 10 and the outer sleeve 50 are coaxially arranged, so that the X-ray tube 40 and the outer sleeve 50 are coaxially mounted; similarly, the plurality of second positioning holes are equidistantly arranged, and the second runner 20 and the X-ray tube 40 are coaxially arranged, so that the X-ray tube 40 and the outer jacket 50 can be coaxially positioned and installed.

In a specific embodiment, the pointer 14 includes a needle body 141 connected to the first central portion 12 and a needle tip portion 142, and the width of the needle body 141 of the pointer 14 is the same as the width of the second connecting portion 23. Referring to fig. 2 and 3, H1 is the width of the second connecting portion 23, H2 is the width of the needle body 141 of the pointer 14, and H2 is equal to or less than H1 for the operator to observe, and further, when H2 is H1 and the needle body 141 of the pointer 14 coincides with the second connecting portion 23, the correction angle θ at this time is 0, that is, the needle tip 142 of the pointer 14 is located at the middle scale of the scale 24, which is 0 °.

The invention also provides a using method of the error correction device, which comprises the following steps: the second rotating wheel 20 is combined with the X-ray tube 40 and fixed; the second rotating wheel 20 is connected with the X-ray tube 40 in a threaded manner and is coaxially arranged; placing the second rotating wheel 20 and the X-ray tube 40 into the inner cavity of the outer sleeve 50 along the vertical direction; combining and fixing the first rotating wheel 10 and the outer sleeve 50; the first rotating wheel 10 is in threaded connection with the outer sleeve 50 and is coaxially arranged; providing a correction angle theta, rotating the second rotating wheel 20 to enable the second rotating wheel 20 to drive the X-ray tube 40 to rotate in the outer sleeve 50, enabling the X-ray tube 40 to rotate relative to the outer sleeve 50, specifically, the second rotating wheel 20 comprises a dial 24, the first rotating wheel 10 comprises a pointer 14, rotating the second rotating wheel 20 to enable the outer end part of the pointer 14 to point to the correction angle theta on the dial 24, and if the theta is equal to 0, the pointer 14 is overlapped with a second connecting part 23, provided with the dial 24, of the second rotating wheel 20; positioning the X-ray tube 40 within the interior of the outer jacket 50; the error correction device is separated from the X-ray tube 40 and the outer envelope 50.

In conclusion, the X-ray tube is driven by the second rotating wheel to rotate relative to the outer sleeve to correct the angle deviation of the ray beam emitting angle of the X-ray tube, so that the assembly of the X-ray tube and the outer sleeve is accurately, efficiently and accurately completed, the safety and the reliability are high, the operability is high, and the labor intensity of workers is reduced; and the problem that the focus position deviation amount of the medical CT bulb tube is too large or cannot be aligned in the whole machine testing link can be solved, and the labor intensity of workers is reduced.

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.