CN113745077B - Error correction device for X-ray tube and using method thereof - Google Patents
Error correction device for X-ray tube and using method thereof Download PDFInfo
- Publication number
- CN113745077B CN113745077B CN202110904811.4A CN202110904811A CN113745077B CN 113745077 B CN113745077 B CN 113745077B CN 202110904811 A CN202110904811 A CN 202110904811A CN 113745077 B CN113745077 B CN 113745077B
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- rotating wheel
- ray tube
- wheel
- error correction
- correction device
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
- A61B6/035—Mechanical aspects of CT
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/58—Testing, adjusting or calibrating apparatus or devices for radiation diagnosis
- A61B6/582—Calibration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
Abstract
The invention provides an error correction device for an X-ray tube and a use method thereof, wherein the error correction device comprises a first rotating wheel which is used for being combined and fixed with an outer tube sleeve; and a second runner rotatable relative to the first runner for being fixed in combination with the X-ray tube; the first wheel and the second wheel are coaxially arranged and connected through a rotating shaft; the first rotating wheel and the second rotating wheel can rotate around the rotating shafts; the second rotating wheel is configured to drive the X-ray tube to rotate relative to the outer tube sleeve so as to correct the angle deviation of the X-ray tube ray beam emission angle. The error correction device can compensate the angle deviation of the ray beam and simultaneously finish the accurate positioning and the installation of the X-ray tube in the outer tube sleeve.
Description
Technical Field
The invention relates to the technical field of medical appliances. And more particularly to an error correction device 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 examination, therapeutic radiation, semiconductor manufacturing, and material analysis. X-rays are high frequency electromagnetic radiation that causes electrons to be emitted from a cathode by thermionic emission by applying an electrical current to the cathode, the electrons being accelerated toward an anode, the electrons can collide with the anode when they strike the anode to produce X-rays, the region on the anode where the electrons collide is commonly referred to as the focal spot.
When the X-ray generated by collision of the electron and the anode irradiates the detection object, the intensity of the X-ray is attenuated and finally received by the detector, and the control system converts the radiation change into an image for evaluating the internal structure and change of the object.
Before the X-ray irradiates the detection object, the X-ray penetrates through the insulating oil layer, then penetrates through the outer tube window 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 rather forms a refraction at the oil-window-air layer. When X-rays are transmitted from the oil layer to the outer tube sleeve window, the material of the outer tube sleeve window does not cause obvious refraction of the X-rays, the thickness is thinner, and the X-rays are intermediate mediums in the whole refraction process, so that the influence on a refraction result is smaller. Thus, the X-ray beam axis forms an angle with the normal to the oil-air layer, which is flanked by an angle of incidence and an angle of refraction, respectively. When the deviation of the emitting 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 products are abandoned or scrapped.
Disclosure of Invention
In view of the foregoing, it is an object of the present invention to provide an error correction device for an X-ray tube, which is capable of accurately positioning and mounting the X-ray tube in an outer tube sleeve while compensating for a beam angle deviation.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the present invention provides an error correction device for an X-ray tube, comprising:
the first rotating wheel is used for being combined and fixed with the outer tube sleeve; and
a second runner rotatable relative to the first runner for being fixed in conjunction with the X-ray tube;
the first wheel and the second wheel are coaxially arranged and connected through a rotating shaft;
the first rotating wheel and the second rotating wheel can rotate around the rotating shafts;
the second rotating wheel is configured to drive the X-ray tube to rotate relative to the outer tube sleeve so as to correct the angle deviation of the X-ray tube ray beam emission angle.
Furthermore, preferably, the first rotating wheel comprises a first outline part, a first central part and a plurality of first connecting parts for connecting the first outline part and the first central part; 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 rotating wheel further comprises a pointer extending outwards from the first center part; the top wall surface of the second connecting part of the second rotating wheel comprises a dial correspondingly matched with the outer end part of the pointer.
In addition, preferably, the first rotating wheel comprises four first connecting parts and two pointers, wherein the included angle between two adjacent first connecting parts is 90 degrees, and the included angle between two pointers is 180 degrees; the second rotating wheel comprises six second connecting portions and two dials, and the included angle between two adjacent second connecting portions is 60 degrees.
Further, preferably, 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 mounting holes arranged on the edge of the mounting opening 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 tube sleeve through a bolt; the second rotating wheel is combined and fixed with the X-ray tube through the upright post.
Furthermore, preferably, the pointer includes a needle body portion connected to the first central portion and a needle tip portion, and the width of the needle body portion of the pointer is the same as the width of the second connecting portion.
Another object of the present invention is to provide a method for using an error correction device, 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 tube sleeve along the vertical direction;
the first rotating wheel is combined and fixed with the outer tube sleeve;
providing a correction angle theta, rotating the second rotating wheel to enable the second rotating wheel to drive the X-ray tube to rotate in the outer tube sleeve, and enabling the X-ray tube to rotate theta relative to the outer tube sleeve;
positioning and mounting the X-ray tube in the inner cavity of the outer tube sleeve;
the error correction device is separated from the X-ray tube and the outer jacket.
Furthermore, preferably, the second runner is screwed with the X-ray tube and coaxially arranged; the first rotating wheel is in threaded connection with the outer tube sleeve and is coaxially arranged.
In addition, preferably, the second rotating wheel comprises a dial, the first rotating wheel comprises a pointer, and the second rotating wheel is rotated so that the outer end part of the pointer points to the correction angle theta on the dial.
The beneficial effects of the invention are as follows:
according to the invention, the second rotating wheel drives the X-ray tube to rotate relative to the outer tube sleeve to correct the angle deviation of the X-ray tube beam emission angle, so that the assembly of the X-ray tube and the outer tube sleeve is accurately and correctly completed, the safety and reliability are high, the operability is strong, and the labor intensity of workers is reduced; and the problems that the focus position deviation amount of the medical CT bulb tube in the whole machine test link is too large or can not be aligned can be solved, and the labor intensity of workers is reduced.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of a first runner of the present invention.
Fig. 3 is a schematic structural view of a second runner 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, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In order to solve the problem of larger deviation of the emitting direction of the X-ray tube ray beam. The present invention provides an error correction device for an X-ray tube, as shown in fig. 1 to 4, specifically the error correction device for an X-ray tube includes: a first pulley 10 for being fixed in combination with the outer sleeve 50; and a second wheel 20 rotatable relative to the first wheel 10 for being fixed in combination with the X-ray tube 40; the first wheel and the second wheel 20 are coaxially arranged and connected through a rotating shaft 30; the first rotating wheel 10 and the second rotating wheel 20 can rotate around the rotating shaft 30; the second wheel 20 is configured to rotate the X-ray tube 40 relative to the outer tube housing 50 to correct for angular misalignment of the beam emission angle of the X-ray tube 40. Through the combination and fixation of the first rotating wheel 10 and the outer tube sleeve 50, the second rotating wheel 20 drives the X-ray tube 40 to rotate relative to the first rotating wheel 10 and the outer tube sleeve 50, so that the correction of the angle deviation of the ray beam emission angle of the X-ray tube 40 is realized according to the provided correction angle theta, and the accurate positioning and assembly of the X-ray tube 40 and the outer tube sleeve 50 are completed.
It will be appreciated that the X-ray tube 40 as a medical device is required to fit within the outer envelope 50 for use during normal use. The upper end of the outer tube sleeve 50 comprises a mounting opening 51, the outer tube sleeve 50 also comprises a window 52, theoretically, when the X-ray tube 40 and the outer tube sleeve 50 are mounted, the X-ray emitting opening of the X-ray tube 40 and the window 52 are required to be coaxially arranged, the invention does not relate to how to measure the correction angle theta, but the circumferential angle of the X-ray tube 40 is adjusted by using the correction angle theta to solve the manufacturing error of the X-ray tube 40, so that the X-ray beam can transmit along the normal line of an oil-window-air layer, and the error correction device for the X-ray tube 40 can finish the accurate positioning and mounting of the X-ray tube 40 in the outer tube sleeve 50 on the basis of obtaining the correction angle theta required when the X-ray tube 40 is assembled with the outer tube sleeve 50.
In an alternative embodiment, the first rotating wheel 10 includes a first outer profile portion 11, a first central portion 12, and a plurality of first connecting portions 13 connecting the first outer profile portion 11 and the first central portion 12; the second runner 20 includes a second profile portion 21, a second center portion 22, and a plurality of second connection portions 23 connecting the second profile portion 21 and the second center portion 22; the first runner 10 is located above the second runner 20 and the inner diameter of the first runner 10 is larger than the outer diameter of the second runner 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 outwardly from the first hub 12; the top wall surface of the second connecting portion 23 of the second rotating wheel 20 includes a dial 24 correspondingly engaged with the outer end portion of the pointer 14. After the correction angle θ is obtained, the pointer 14 is directed to the corresponding angle on the dial 24 by rotating the second rotating wheel 20, so that the adjustment and correction are more accurate, the operation is simpler, and the rotating angle is more visual.
Referring to fig. 2 and 3, further, the first rotating wheel 10 includes four first connecting portions 13 and two pointers 14, wherein an included angle between two adjacent first connecting portions 13 is 90 °, and an included angle between two pointers 14 is 180 °; the second rotating wheel 20 comprises six second connecting portions 23 and two dials 24, the included angle between two adjacent second connecting portions 23 is 60 ° and four first connecting portions enable the first rotating wheel 10 to be more stable and capable of bearing the weight of the second rotating wheel 20 and the weight of the X-ray tube 40 at the same time, the included angles between the adjacent connecting portions are equal, so that the rotating wheel is stressed more uniformly, the two groups of pointers 14 and dials 24 are convenient for operators to observe and operate from different directions, and operation space is saved.
Regarding the way of matching the first rotating wheel 10 with the second rotating wheel 20, specifically, the first central portion 12 includes a first central hole 15, and the second central portion 22 includes a second central hole 25; referring to fig. 4, the shaft 30 includes a main body 31 and a boss 32 integrally formed with the main body 31; the main body 31 includes a third central hole 33, and the main body 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. Although the first wheel 10 and the second wheel 20 are rotatable about the rotation axis 30, the outer tube 50 is usually fixed to adjust the X-ray tube 40 due to the heavy weight of the outer tube 50, but the present invention is not limited thereto, and a bolt having a head portion for preventing the first wheel 10 and the second wheel 20 from falling off the rotation axis 30 is disposed in the third center hole 33.
In a specific embodiment, the first profile portion 11 includes a plurality of first positioning holes 16 equidistantly disposed along the circumferential direction of the first profile portion 11, the plurality of first positioning holes 16 correspond to mounting holes disposed on the edge of the mounting opening 51 at the upper end of the outer sleeve 50, so that the first rotating wheel 10 is coaxially mounted with the outer sleeve 50, and the second profile portion 21 includes a plurality of second positioning holes; the first rotating wheel 10 is combined and fixed with the outer pipe sleeve 50 through bolts; the second runner 20 is fixed by a column in combination with an X-ray tube 40. Specifically, the plurality of first positioning holes 16 are equidistantly arranged, the first rotating wheel 10 and the outer tube sleeve 50 are combined and fixed through bolts passing through the first positioning holes 16, and the X-ray tube 40 and the outer tube sleeve 50 are coaxially arranged through the first rotating wheel 10 and the outer tube sleeve 50 so as to be coaxially arranged; likewise, the plurality of second positioning holes are equidistantly arranged, and the second rotating wheel 20 and the X-ray tube 40 are coaxially arranged, so that the X-ray tube 40 and the outer tube sleeve 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 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 is convenient for the operator to observe when H2 is equal to or less than H1, and further, when h2=h1 and the needle body 141 of the pointer 14 is overlapped with the second connecting portion 23, the correction angle θ=0 at this time, that is, the needle tip 142 of the pointer 14 is positioned at the middle scale of the dial 24, which is 0 °.
The invention also provides a use method of the error correction device, which comprises the following steps: the second rotating wheel 20 is combined and fixed with the X-ray tube 40; the second rotating wheel 20 is in threaded connection with the X-ray tube 40 and is coaxially arranged; placing the second runner 20 and the X-ray tube 40 in the inner cavity of the outer tube sleeve 50 in a 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 tube sleeve 50, so that the X-ray tube 40 rotates theta relative to the outer tube sleeve 50, specifically, the second rotating wheel 20 comprises a dial 24, the first rotating wheel 10 comprises a pointer 14, the second rotating wheel 20 is rotated to enable the outer end part of the pointer 14 to point to the correction angle theta on the dial 24, and if theta=0, the pointer 14 coincides with a second connecting part 23 of the second rotating wheel 20 with the dial 24; positioning and mounting the X-ray tube 40 within the inner cavity of the outer tube sleeve 50; the error correction device is separated from the X-ray tube 40 and the outer envelope 50.
In summary, the second rotating wheel drives the X-ray tube to rotate relative to the outer tube sleeve to correct the angle deviation of the X-ray tube beam emission angle, so that the assembly of the X-ray tube and the outer tube sleeve is accurately, efficiently and accurately completed, the safety and reliability are high, the operability is high, and the labor intensity of workers is reduced; and the problems that the focus position deviation amount of the medical CT bulb tube in the whole machine test link is too large or can not be aligned can be solved, and the labor intensity of workers is reduced.
It should be understood that the foregoing examples of the present invention are provided merely for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (10)
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 tube sleeve; and
a second runner rotatable relative to the first runner for being fixed in conjunction with the X-ray tube;
the first rotating wheel and the second rotating wheel are coaxially arranged and connected through a rotating shaft;
the first rotating wheel and the second rotating wheel can rotate around the rotating shafts;
the second rotating wheel is configured to drive the X-ray tube to rotate relative to the outer tube sleeve so as to correct the angle deviation of the X-ray tube ray beam emission angle.
2. The error correction device for an X-ray tube of claim 1, wherein the first wheel comprises a first outer contour portion, a first center portion, and a plurality of first connection portions connecting the first outer contour portion and the first center 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 for an X-ray tube of claim 2, wherein the first wheel further comprises a pointer extending outwardly from the first center portion; the top wall surface of the second connecting part of the second rotating wheel comprises a dial correspondingly matched with the outer end part of the pointer.
4. An error correction device for an X-ray tube according to claim 3, wherein the first rotating wheel comprises four first connecting portions and two pointers, the angle between two adjacent first connecting portions being 90 ° and the angle between two pointers being 180 °; the second rotating wheel comprises six second connecting portions and two dials, and the included angle between two adjacent second connecting portions 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 and the second central portion includes a second central aperture; 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 portion includes a plurality of first positioning holes provided at equal intervals in a circumferential direction of the first profile portion, the plurality of first positioning holes corresponding to mounting holes provided on an edge of a mounting port at an upper end of the outer tube housing so that the first rotating wheel is coaxially mounted with the outer tube housing; the second outline part comprises a plurality of second positioning holes; the first rotating wheel is fixedly combined with the outer tube sleeve through a bolt; the second rotating wheel is combined and fixed with the X-ray tube through the upright post.
7. An error correction device for an X-ray tube according to claim 3, wherein the pointer comprises a needle body portion connected to the first central portion and a needle tip portion, the width of the needle body portion of the pointer being the same as the width of the second connecting portion.
8. A method of using an error correction device, 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 tube sleeve along the vertical direction;
the first rotating wheel is combined and fixed with the outer tube sleeve;
providing a correction angle theta, rotating the second rotating wheel to enable the second rotating wheel to drive the X-ray tube to rotate in the outer tube sleeve, and enabling the X-ray tube to rotate theta relative to the outer tube sleeve;
positioning and mounting the X-ray tube in the inner cavity of the outer tube sleeve;
the error correction device is separated from the X-ray tube and the outer jacket.
9. The method of claim 8, wherein the second wheel is threadably coupled to the X-ray tube and coaxially disposed; the first rotating wheel is in threaded connection with the outer tube sleeve and is coaxially arranged.
10. The method of claim 8, wherein the second wheel includes a dial, the first wheel includes a pointer, and the second wheel is rotated such that the outer end of the pointer is directed at a correction angle θ on the dial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110904811.4A CN113745077B (en) | 2021-08-07 | 2021-08-07 | Error correction device for X-ray tube and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110904811.4A CN113745077B (en) | 2021-08-07 | 2021-08-07 | Error correction device for X-ray tube and using method thereof |
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| CN113745077A CN113745077A (en) | 2021-12-03 |
| CN113745077B true CN113745077B (en) | 2023-07-28 |
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|---|---|
| CN113745077A (en) | 2021-12-03 |
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