CN117790269B - Bipolar X-ray bulb tube - Google Patents
Bipolar X-ray bulb tube Download PDFInfo
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- CN117790269B CN117790269B CN202410053106.1A CN202410053106A CN117790269B CN 117790269 B CN117790269 B CN 117790269B CN 202410053106 A CN202410053106 A CN 202410053106A CN 117790269 B CN117790269 B CN 117790269B
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Abstract
The invention relates to the technical field of X-ray tube manufacturing, in particular to a bipolar X-ray tube. The cathode structure comprises a cover body, wherein the cover body comprises a cathode body and an anode body which are respectively arranged at two axial sides of the cover body, one side of the cover body, corresponding to the cathode body, is provided with a filament, a target disc is arranged in the cover body, an installation shaft is arranged in the cover body, the target disc is arranged on the installation shaft, a preset interval is arranged between the target disc and the cathode body, and the cathode structure is characterized in that two ends of the installation shaft are connected with two ends of the cover body, corresponding to the cathode body and the anode body, the installation shaft comprises an insulation section and a conductive section which are axially connected, the insulation section is connected with the cathode body, and the conductive section is connected with the anode body. Compared with the existing cantilever structure with one end connected with the anode body, the anode has the advantage of high stability.
Description
Technical Field
The invention relates to the technical field of X-ray tube manufacturing, in particular to a bipolar X-ray tube.
Background
Along with the rapid development of the medical imaging industry, the requirements on the X-ray bulb tube are higher and higher, especially the rigidity requirement on the installation of the target disc is greatly improved, and for the main stream bipolar bulb tube in the market, the target disc is in cantilever installation because the target disc needs to be insulated from the cathode body of the cover body, so that the target disc is completely isolated from the cathode body of the cover body, as the rotating anode rotor and the CT bulb tube of the built-in heat pipe provided by the Chinese patent application document with the publication number of CN 116130321A. However, the structure of the cantilever may cause poor stability of the target disk mounting, especially when the target disk is mounted on the rotating member, and the swing is inevitably generated during the high-speed rotation of the target disk, thereby negatively affecting the CT.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a bipolar X-ray tube, which has the advantage of high stability of target disk installation.
In order to achieve the above object, the present invention is realized by the following technical scheme:
The bipolar X-ray bulb tube comprises a cover body, wherein the cover body comprises a cathode body and an anode body which are respectively arranged at two axial sides of the cover body, one side of the cover body, corresponding to the cathode body, is provided with a filament, corresponding to the filament, is provided with a target disc in the cover body, is internally provided with a mounting shaft, the target disc is arranged on the mounting shaft, and a preset interval is arranged between the target disc and the cathode body.
Based on the structure, the bipolar X-ray tube has the principle that the conducting section is connected with the anode body, so that the target disc is electrically communicated with the anode body, the insulating section is connected with the cathode body, and the conducting section and the target disc are electrically isolated from the cathode body due to the isolation of the insulating section, so that the target disc and the cathode body generate potential difference to generate an electric field, and the filament generates electrons through external driving and bombards the target disc under the driving of the electric field to generate X-rays. The bipolar X-ray tube is axially connected to two ends of the cover body, corresponding to the cathode body and the anode body, through the mounting shaft, and the target disc is mounted on the mounting shaft, so that the bipolar X-ray tube has the advantage of high stability compared with the existing cantilever structure with one end connected to the anode body. The cathode body and the anode body are not conducted with each other on the cover body, and the cover body is a common arrangement of the bipolar X-ray bulb cover body.
Further, the bipolar X-ray tube of the application, wherein the cover body comprises a filament cover, the filament cover is arranged on the cathode body, and the filament is arranged in the filament cover.
Further, the bipolar X-ray tube further comprises a driving rotor, wherein the driving rotor is connected with the target disc, and the driving rotor is rotatably arranged on the mounting shaft. As a preferable scheme of the application, the driving rotor is driven to rotate through the driving coil arranged outside the cover body so as to drive the target coil to rotate around the mounting shaft.
Furthermore, the bipolar X-ray tube further comprises a mounting shaft sleeve, the mounting shaft sleeve is sleeved on the mounting shaft, the mounting shaft sleeve is in rotary connection with the mounting shaft, and the driving rotor and the target disc are mounted on the mounting shaft sleeve. As a preferred embodiment of the present application, the mounting sleeve, the driving rotor and the target disk integrally form an anode rotation system.
Furthermore, in the bipolar X-ray tube, a bearing medium is arranged between the mounting shaft sleeve and the mounting shaft. As a preferred embodiment of the present application, the bearing medium serves to reduce resistance received by the mounting sleeve rotating on the mounting shaft, and may be in the form of liquid metal, balls, or rollers. The mounting sleeve, the mounting shaft and the bearing medium integrally form a bearing. The form of the bearing corresponds to the liquid metal bearing, the ball bearing and the roller bearing respectively.
Furthermore, in the bipolar X-ray tube, the mounting shaft is provided with the cooling channel which is axially penetrated, and the cooling channel extends out of the outer end of the cover body. As a preferable scheme of the application, only one end of a shaft body of a target disk corresponding to the traditional bipolar X-ray tube is connected with a cover body, one end of the shaft body close to a filament is arranged in the cover body, cooling medium cannot axially pass out of the cover body during cooling, and only one loop is arranged in the rotating shaft, namely the cooling medium enters from the connecting end of the shaft body and the cover body and then passes out of the connecting end. The bipolar X-ray tube is characterized in that the mounting shaft is provided with a cooling channel which is axially communicated on the basis of the connection of the two ends of the mounting shaft with the cover body, namely, the mounting shaft is integrally in a tube body, and when the bipolar X-ray tube works, a cooling medium axially flows in the cooling channel so as to realize cooling of parts such as a target disc and the like connected to the mounting shaft. Compared with a traditional bipolar X-ray tube with one end connected with a cover body and the other end arranged in the cover body, under the condition that the shaft diameter of the mounting shaft is fixed, the cooling channels are also arranged in the shaft body, and the traditional bipolar X-ray tube is required to be provided with two cooling channels which are arranged in one out and one in the shaft body. Due to the improvement of cooling efficiency, the target disk of the bipolar X-ray tube can be designed into a single metal or single graphite target disk, so that the advantage of saving the cost of the target disk is achieved.
Furthermore, in the bipolar X-ray tube, the mounting boss is arranged on the mounting shaft sleeve, and the driving rotor and the target disc are arranged on two axial sides of the mounting boss. As a preferred embodiment of the present application, the mounting boss realizes axial positioning of the drive rotor and target disk.
Furthermore, in the bipolar X-ray tube, the limit nut is arranged on the mounting shaft sleeve, and the limit nut is arranged on one side of the target disc, which is far away from the mounting boss. As a preferable scheme of the application, the target disc is arranged between the mounting boss and the limit nut, and the limit nut realizes axial limit of the target disc.
The technical scheme can be seen that the invention has the following beneficial effects:
1. The invention provides a bipolar X-ray tube, which is axially connected with two ends of a cathode body and an anode body corresponding to a cover body through a mounting shaft, wherein a target disc is mounted on the mounting shaft, and the bipolar X-ray tube has the advantage of high stability compared with the existing cantilever structure with one end connected with the anode body.
2. The application provides a bipolar X-ray tube, which is characterized in that on the basis of connection of two ends of a mounting shaft with a cover body, an axially-through cooling channel is arranged on the mounting shaft, namely, the mounting shaft is integrally a tube body. And has the advantage of high cooling efficiency compared with the conventional bipolar X-ray tube.
Drawings
Fig. 1 is a schematic structural diagram of a bipolar X-ray tube according to an embodiment of the present application;
fig. 2 is a block diagram of a bearing device according to an embodiment of the present application.
In the figure, the lamp comprises a 1-cover body, a 101-cathode body, a 102-anode body, a 11-filament cover, a 2-filament, a 3-target plate, a 4-mounting shaft, a 40-cooling channel, a 41-insulation section, a 42-conductive section, a 5-driving rotor, a 6-mounting shaft sleeve, a 61-mounting boss and a 62-limit nut.
Detailed Description
Example 1
Along with the rapid development of the medical imaging industry, the requirements on the X-ray bulb tube are higher and higher, especially the rigidity requirement on the installation of the target disc is greatly improved, and for the main stream bipolar bulb tube in the market, the target disc is in cantilever installation because the target disc needs to be insulated from the cathode body of the cover body, so that the target disc is completely isolated from the cathode body of the cover body, such as a rotating anode rotor and a CT bulb tube with a built-in heat pipe provided by the publication No. CN 116130321A. However, the structure of the cantilever may cause poor stability of the target disk mounting, especially when the target disk is mounted on the rotating member, and the swing is inevitably generated during the high-speed rotation of the target disk, thereby negatively affecting the CT.
In this regard, as shown in fig. 1 and 2, the present embodiment provides a bipolar X-ray tube, which includes a housing 1, the housing 1 includes a cathode body 101 and an anode body 102 disposed at two sides of the housing 1 in an axial direction, one side of the housing 1 corresponding to the cathode body 101 is provided with a filament 2, a target disk 3 is disposed in the housing 1 corresponding to the filament 2, a mounting shaft 4 is disposed in the housing 1, the target disk 3 is disposed on the mounting shaft 4, and a preset distance is disposed between the target disk 3 and the cathode body 101, and the bipolar X-ray tube is characterized in that two ends of the mounting shaft 4 are connected with two ends of the housing 1 corresponding to the cathode body 101 and the anode body 102, the mounting shaft 4 includes an insulating section 41 and a conductive section 42 which are axially connected, the insulating section 41 is connected to the cathode body 101, and the conductive section 42 is connected to the anode body 102.
Based on the above structure, the bipolar X-ray tube is based on the principle that the conductive segment 42 is connected with the anode body 102, so that the target disk 3 is electrically connected with the anode body 102, the insulating segment 41 is connected with the cathode body 101, and the conductive segment 42 and the target disk 3 are electrically isolated from the cathode body 101 due to the isolation of the insulating segment 41, so that the target disk 3 and the cathode body 101 generate a potential difference to generate an electric field, the filament 2 generates electrons through external driving, and the target disk 3 is bombarded to generate X-rays under the driving of the electric field. The bipolar X-ray tube of the present application is axially connected to two ends of the cover body 1 corresponding to the cathode body 101 and the anode body 102 through the mounting shaft 4, and the target disc 3 is mounted on the mounting shaft 4, and has the advantage of high stability compared with the cantilever structure (it is to be noted that the whole bipolar X-ray tube is horizontal when in use, corresponding to the bipolar X-ray tube shown in fig. 1) that one end of the cantilever structure is connected to the anode body 102. The cathode body 101 and the anode body 102 are not conductive to each other in the cover body 1, which is a common arrangement of bipolar X-ray bulb covers. In this embodiment, the insulating section 41 is made of ceramic, the conductive section 42 is made of conductive metal, and the two sections are axially connected by brazing. The two ends of the mounting shaft 4 are welded on the cover body 1.
In this embodiment, the cover 1 includes a filament cover 11, the filament cover 11 is disposed on the cathode body 101, and the filament 2 is disposed in the filament cover 11.
In this embodiment, the apparatus further includes a driving rotor 5, where the driving rotor 5 is connected to the target disk 3, and the driving rotor 5 is rotatably disposed on the mounting shaft 4. The driving rotor 5 is driven to rotate by a driving coil arranged outside the cover body 1 so as to drive the target disc 3 to rotate around the mounting shaft 4.
In this embodiment, the motor further comprises a mounting shaft sleeve 6, the mounting shaft sleeve 6 is sleeved on the mounting shaft 4, the mounting shaft sleeve 6 is rotationally connected with the mounting shaft 4, and the driving rotor 5 and the target disc 3 are mounted on the mounting shaft sleeve 6. The mounting sleeve 6, the driving rotor 5 and the target disk 3 integrally form an anode rotation system.
In this embodiment, a bearing medium is disposed between the mounting sleeve 6 and the mounting shaft 4. The bearing medium acts to reduce the resistance to rotation of the mounting sleeve 6 on the mounting shaft 4, and may be in the form of liquid metal, balls or rollers. The mounting sleeve 6, the mounting shaft 4 and the bearing medium integrally form a bearing. The form of the bearing corresponds to the liquid metal bearing, the ball bearing and the roller bearing respectively.
The shaft body of the target disk corresponding to the traditional bipolar X-ray bulb tube is only connected with the cover body at one end, one end of the shaft body close to the filament is arranged inside the cover body, cooling medium cannot axially flow out of the cover body during cooling, and only one loop can be arranged inside the rotating shaft, namely, the cooling medium enters from the connecting end of the shaft body and the cover body and then flows out from the connecting end. In this embodiment, the mounting shaft 4 is provided with a cooling channel 40 that penetrates axially, and the cooling channel 40 extends out of the outer end of the cover 1. In the bipolar X-ray tube according to the present embodiment, on the basis that both ends of the mounting shaft 4 are connected to the cover 1, the mounting shaft 4 is provided with the cooling channel 40 that is axially through, that is, the entire mounting shaft 4 is a tube body, and when the bipolar X-ray tube according to the present application works, a cooling medium axially flows in the cooling channel 40 to cool the components such as the target disk 3 connected to the mounting shaft 4. Compared with a bipolar X-ray tube, wherein one end of a traditional shaft body is connected with a cover body, and the other end of the traditional bipolar X-ray tube is arranged in the cover body, under the condition that the shaft diameter of the installation shaft 4 is fixed, a cooling channel is also arranged in the shaft body, two one-outlet one-inlet cooling channels are required to be arranged in the shaft body of the traditional bipolar X-ray tube, and only one cooling channel 40 is required to be arranged in the application, so that the radial size of the cooling channel 40 can be set larger, and the cooling efficiency can be improved. Due to the improvement of cooling efficiency, the target disk 3 of the bipolar X-ray tube can be designed into a single metal or single graphite target disk, so that the advantage of saving the cost of the target disk is achieved.
In this embodiment, the mounting boss 61 is provided on the mounting sleeve 6, and the driving rotor 5 and the target disk 3 are disposed on two axial sides of the mounting boss 61. The mounting boss 61 enables axial positioning of the drive rotor 5 and target disk 3.
In this embodiment, the mounting sleeve 6 is provided with a limit nut 62, and the limit nut 62 is disposed on the side of the target disk 3 away from the mounting boss 61. The target disc 3 is arranged between the mounting boss 61 and the limit nut 62, and the limit nut 62 realizes axial limit of the target disc 3.
Example 2
The bearing device for a bipolar X-ray tube according to embodiment 1, as shown in fig. 2, includes a mounting shaft 4 according to embodiment 1, the mounting shaft 4 includes an insulating section 41 and a conductive section 42 that are axially connected, and further includes a mounting shaft sleeve 6, the mounting shaft sleeve 6 is sleeved on the mounting shaft 4, the mounting shaft sleeve 6 is rotationally connected with the mounting shaft 4, and a bearing medium is disposed between the mounting shaft sleeve 6 and the mounting shaft 4.
Based on the above bearing device, the two ends of 4=can be connected to the two ends of the cathode body 101 and the anode body 102 of the cover body 1, and the target disc 3 is mounted on the mounting shaft sleeve 6, so that the stability of rotation of the target disc 3 can be improved.
Further, in this embodiment, the mounting shaft 4 is provided with a cooling channel 40 that penetrates axially. The cooling efficiency can be improved.
Further, in this embodiment, the mounting boss 61 is provided on the mounting sleeve 6. For axially limiting the target disk 3 and the drive rotor 5 mounted on the mounting sleeve 6.
The technical principles of the present invention have been described above in connection with specific embodiments, which are provided for the purpose of explaining the principles of the present invention and are not to be construed as limiting the scope of the present invention in any way. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (5)
1. The bipolar X-ray bulb tube comprises a cover body (1), wherein the cover body (1) comprises a cathode body (101) and an anode body (102) which are respectively arranged at two axial sides of the cover body (1), one side of the cover body (1) corresponding to the cathode body (101) is provided with a filament (2), a target disc (3) is arranged in the cover body (1) corresponding to the filament (2), a mounting shaft (4) is arranged in the cover body (1), the target disc (3) is arranged on the mounting shaft (4), a preset interval is arranged between the target disc (3) and the cathode body (101), and the bipolar X-ray bulb tube is characterized in that two ends of the mounting shaft (4) are connected with two ends of the cover body (1) corresponding to the cathode body (101) and the anode body (102), the mounting shaft (4) comprises an insulating section (41) and a conducting section (42) which are axially connected, the insulating section (41) is connected to the cathode body (101), and the conducting section (42) is connected to the anode body (102);
The device also comprises a driving rotor (5), wherein the driving rotor (5) is connected with the target disc (3), and the driving rotor (5) is rotatably arranged on the mounting shaft (4);
The device further comprises a mounting shaft sleeve (6), wherein the mounting shaft sleeve (6) is sleeved on the mounting shaft (4), the mounting shaft sleeve (6) is rotationally connected with the mounting shaft (4), and the driving rotor (5) and the target disc (3) are mounted on the mounting shaft sleeve (6);
The mounting shaft sleeve (6) is provided with a mounting boss (61), and the driving rotor (5) and the target disc (3) are arranged on two axial sides of the mounting boss (61).
2. A bipolar X-ray tube according to claim 1, characterized in that the housing (1) comprises a filament housing (11), the filament housing (11) being arranged on the cathode body (101), the filament (2) being arranged in the filament housing (11).
3. A bipolar X-ray tube according to claim 1, characterized in that a bearing medium is arranged between the mounting sleeve (6) and the mounting shaft (4).
4. A bipolar X-ray tube according to claim 1, characterized in that the mounting shaft (4) is provided with an axially through cooling channel (40), which cooling channel (40) extends beyond the outer end of the housing (1).
5. The bipolar X-ray tube according to claim 1, wherein the mounting sleeve (6) is provided with a limit nut (62), and the limit nut (62) is arranged on one side of the target disc (3) away from the mounting boss (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410053106.1A CN117790269B (en) | 2024-01-15 | 2024-01-15 | Bipolar X-ray bulb tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410053106.1A CN117790269B (en) | 2024-01-15 | 2024-01-15 | Bipolar X-ray bulb tube |
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| Publication Number | Publication Date |
|---|---|
| CN117790269A CN117790269A (en) | 2024-03-29 |
| CN117790269B true CN117790269B (en) | 2025-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410053106.1A Active CN117790269B (en) | 2024-01-15 | 2024-01-15 | Bipolar X-ray bulb tube |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN221927960U (en) * | 2023-12-26 | 2024-10-29 | 无锡市宇寿医疗器械有限公司 | Rotary anode X-ray tube using bipolar liquid metal bearing |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6603834B1 (en) * | 2001-09-18 | 2003-08-05 | Koninklijke Philips Electronics, N.V. | X-ray tube anode cold plate |
| WO2005038852A1 (en) * | 2003-10-17 | 2005-04-28 | Kabushiki Kaisha Toshiba | X-ray apparatus |
| JP5259406B2 (en) * | 2006-12-04 | 2013-08-07 | 株式会社東芝 | Rotating anode X-ray tube |
| CN201673886U (en) * | 2010-04-30 | 2010-12-15 | 珠海瑞能真空电子有限公司 | CT pipet with outer rotor structure |
| JP5890309B2 (en) * | 2010-08-24 | 2016-03-22 | 株式会社日立メディコ | X-ray tube apparatus and X-ray CT apparatus |
| CN106941062A (en) * | 2017-04-20 | 2017-07-11 | 上海宏精医疗器械有限公司 | A kind of negative electrode tilting X-ray apparatus |
| CN208796943U (en) * | 2018-09-30 | 2019-04-26 | 汕头高新区聚德医疗科技有限公司 | A kind of glass shell CT bulb |
| CN110137061A (en) * | 2019-05-31 | 2019-08-16 | 麦默真空技术无锡有限公司 | A high temperature resistant X-ray CT tube |
| US11257652B2 (en) * | 2020-02-10 | 2022-02-22 | Richardson Electronics, Ltd. | Insulator with conductive dissipative coating |
| CN112563095B (en) * | 2020-12-26 | 2024-08-06 | 思柯拉特医疗科技（苏州）有限公司 | Medical X-ray tube with bearing structures at two ends |
| CN113270305B (en) * | 2021-05-26 | 2022-11-11 | 上海交通大学 | liquid metal bearings |
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- 2024-01-15 CN CN202410053106.1A patent/CN117790269B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN221927960U (en) * | 2023-12-26 | 2024-10-29 | 无锡市宇寿医疗器械有限公司 | Rotary anode X-ray tube using bipolar liquid metal bearing |
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| CN117790269A (en) | 2024-03-29 |
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