CN218631903U

CN218631903U - Rotary bulb for image scanning

Info

Publication number: CN218631903U
Application number: CN202223050234.6U
Authority: CN
Inventors: 段卫胜; 王慧亮; 刘旭; 赵莉; 钟铭; 杨跃明; 张小虎; 耿昇乐
Original assignee: Cgn Medical Technology Mianyang Co ltd
Current assignee: Cgn Medical Technology Mianyang Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-03-14
Anticipated expiration: 2032-11-14

Abstract

The utility model discloses a rotary bulb tube for image scanning, belonging to the technical field of radiotherapy; the tube core comprises a tube shell, a cathode and an anode target disc, the cathode and the anode target disc are arranged in the tube shell, the tube core further comprises a cooling shell and a cooling inner tube, the tube core is packaged in the cooling shell, a cooling cavity is reserved between the tube core and the cooling shell, a cooling medium inlet and a cooling medium outlet which are communicated with the cooling cavity are formed in the cooling shell, the anode target disc is of a hollow structure, one end of the cooling inner tube is communicated with the inner cavity of the anode target disc, the other end of the cooling inner tube penetrates through the anode target disc and extends to the outside of the cooling shell, and a fluid outlet which is communicated with the inner cavity of the anode target disc is formed in the anode target disc; the utility model greatly prolongs the service life of the X-ray bulb tube and ensures the stable proceeding of cone beam computer tomography in proton treatment.

Description

Rotary bulb for image scanning

Technical Field

The utility model relates to an image scanning especially relates to a cone beam is X ray bulb for computed tomography for rotatory bulb for image scanning belongs to radiotherapy technical field.

Background

Cancer has become a major killer that endangers human health, and is one of the major diseases threatening the health of the national people in China. Currently, radiation therapy remains one of the primary means of treating malignancies. Approximately 70% of cancer patients require radiation therapy in the course of cancer treatment. Photon therapy, which is a mainstream therapeutic method in clinical practice, has entered a bottleneck, and proton therapy, which has been in existence for a long time but has not been fully developed for various reasons, is gaining favor of scholars. Proton therapy, also called proton beam therapy, is a type of particle therapy, which is currently the most advanced radiation therapy. While the radiotherapy work is carried out, the four essences, namely accurate diagnosis, accurate planning, accurate positioning and accurate treatment, are required to be realized.

Among many factors affecting the treatment effect, the control of the positioning of the patient, the determination of the target area position, and the movement of the patient during the treatment (the movement of the target area driven by involuntary movement and organ movement) is the key to the implementation of precise image-guided radiotherapy (the combination of a radiotherapy machine and an imaging device, the acquisition of relevant image information during the treatment, the determination of the position and movement of the treatment target area and important structures, and the correction of the position and dose distribution when necessary). An existing image guidance system is Cone Beam Computed Tomography (CBCT), which provides three-dimensional volumetric images at the treatment isocenter for improved patient positioning and anatomical assessment. And rotating a single two-dimensional image device around the area to be imaged, acquiring a three-dimensional image, and reconstructing the three-dimensional image by using the acquired two-dimensional image. The stereo 2D image equipment comprises a bulb tube and an imaging flat plate in the orthogonal direction of proton treatment beam current. The bulb tube and the imaging flat plate are both arranged on the rotating frame, can rotate and can carry out image scanning on a target area of a patient. The bulb tube emits X-rays, and is a key component of scanning imaging as an X-ray source.

The X-ray bulb tube rotating with the rotating frame and scanning image is based on the principle that after the filament of the cathode part is electrified, accelerated electrons are emitted and captured by the tungsten target of the anode part, huge energy is emitted due to impact, and meanwhile, the tungsten target blocks the electron flow moving at high speed and radiates the X-ray generated during exposure. However, when the anode target is bombarded by high-speed electrons, 99% of the generated energy is converted into heat energy, that is, a large amount of heat is generated when the bulb tube generates X-rays, but if the temperature in the bulb tube is too high, the service life of the bulb tube is greatly affected, and therefore cooling is needed. The cooling effect of the structure of the existing X-ray bulb tube is not good enough, so that the service life of the X-ray bulb tube is greatly shortened; the X-ray bulb tube mainly shows that the heat transfer of the existing X-ray bulb tube is slow, the heat dissipation effect is poor, the heat taken away in unit time is less, the cooling effect of the X-ray bulb tube is poor, and a great deal of inconvenience is brought to clinical use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a rotary bulb tube for image scanning.

The utility model adopts the technical proposal that: the rotary bulb tube comprises a tube core, wherein the tube core comprises a tube shell, a cathode and an anode target disc, the cathode and the anode target disc are respectively arranged at two ends of the tube shell and used for generating X rays in the tube shell, the rotary bulb tube further comprises a cooling shell and a cooling inner tube, the tube core is packaged in the cooling shell, a cooling cavity is reserved between the periphery of the tube core and the periphery of the cooling shell, a cooling medium inlet and a cooling medium outlet which are communicated with the cooling cavity are formed in the cooling shell and used for introducing and discharging cooling media, the anode target disc is of a hollow structure, one end of the cooling inner tube is communicated with an inner cavity of the anode target disc, the other end of the cooling inner tube penetrates through the anode target disc and extends to the outside of the cooling shell, and a fluid outlet which is communicated with the inner cavity of the anode target disc is arranged on the anode target disc and used for discharging high heat of the cooling media introduced from the cooling inner tube and absorbed on the anode target disc.

Further, the tube shell comprises an end cover, a cathode part and an anode part which are sequentially and hermetically connected from top to bottom, a cathode assembly is arranged in the end cover, cathode filaments and the like are arranged in the cathode part, an anode target disc is arranged in the anode part, cooling fins are arranged on the outer surfaces of the cathode part and the anode part in an annular array mode, the cooling fins on the cathode part and the anode part are arranged in a one-to-one correspondence mode, the heat exchange contact area is increased, and the cooling efficiency is improved.

Further, the cooling fin width of anode portion is greater than the cooling fin width of cathode portion, and the former is twice and more than the latter, and anode portion heat is concentrated, increase fin area, improves the radiating efficiency, the tube core passes through the cooling fin fixed mounting of anode portion in cooling shell middle part, and on one hand, convenient the setting need not increase other connection structure, on the other hand through direct contact between the cooling fin of anode portion and the cooling shell, the improvement heat conductivity, and both coaxial settings, each structure department heat dissipation is even.

Furthermore, the cooling medium inlet and the cooling medium outlet are respectively positioned at the lower end and the upper end of the cooling shell, the upper end is the cooling medium outlet, the characteristic that the fluid is heated and floats upwards is added in a circulating mode from bottom to top, so that the anode target disk is cooled to the maximum extent, the anode target disk is respectively positioned at one opposite side of the cooling shell, and the cooling medium is fully utilized to absorb and take away the heat of the bulb tube.

Further, the positive pole target disc includes ring flange, positive pole target surface, rotor, bearing and stator, the stator passes through ring flange and tube fixed mounting, the rotor passes through the bearing and is connected with the stator rotation, positive pole target surface and rotor upper end fixed connection, inside the cooling inner tube extended to the stator, utilized the stator to carry out the heat absorption of cooling to the positive pole target surface of high fever.

Furthermore, a plurality of annular grooves are formed in the upper end of the stator, cooling rings which correspond to the annular grooves one by one are arranged at the lower end of the anode target surface, the contact area is increased, and the heat exchange efficiency is improved.

Furthermore, the stator is of a hollow T-shaped structure, the stator is simple to machine and manufacture and convenient to install, the cooling inner pipe extends to the upper end of the stator, and the fluid outlet is formed in the lower end of the stator to form internal cooling.

Furthermore, the end, located at the stator, of the cooling inner tube is provided with a heat dissipation disc, so that the cooling medium which is prevented from coming out of the cooling inner tube directly flows out along the cylindrical surface of the outer wall of the cooling inner tube, and sufficient contact time and contact area between the cooling medium which is prevented from coming out of the cooling inner tube and a heat source are guaranteed.

The flange plate is an insulating flange plate, the cooling medium can be liquid or gas, preferably, the cooling inner pipe is filled with liquid cooling medium (which can take away a large amount of heat), and gas cooling medium is filled between the cooling shell and the tube core (on one hand, leakage to the inside of the tube core or the outside of the cooling shell is prevented, on the other hand, the heat outside the tube core is relatively less, and only air cooling is needed).

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up the inner cooling shell outside the tube core, set up the recirculated cooling medium through coolant import and coolant export in the cavity between inner cooling shell and the tube core and cool off the bulb outside, carry out the internal cooling to the rotating part positive pole target surface sealed in the tube through inner cooling inner tube and fluid outlet simultaneously, cool down the heat dissipation simultaneously to the bulb inside and outside, the cooling effect to the X ray bulb is better, guarantees the life-span of X ray bulb; the utility model provides an X ray bulb heat transfer is relatively fast, and the radiating effect is better simultaneously, and the heat of taking away in unit time is more, and X ray bulb cooling effect is good, promotes the convenience of clinical use greatly.

2. The utility model has the advantages that the cooling liquid is conveyed to the interior of the stator through the inner cooling tube, the contact area is large, and the heat generated by the anode can be quickly transferred out through the cooling liquid, the cooling effect is good, the operation is convenient, the structure is reasonable, the stability is good, and the reliability is high; the surface of the tube core of the X-ray tube can be ensured not to have obvious temperature difference to a certain extent, and the service life of the X-ray tube is greatly prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of the present invention.

Fig. 2 is a schematic diagram of the tube core structure of the present invention.

In the figure: 1-cathode, 2-cooling shell, 3-cooling inner tube, 4-fluid outlet, 5-end cover, 6-cathode part, 7-anode part, 8-flange, 9-anode target surface, 10-rotor, 11-bearing, 12-stator, 13-radiating disk.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1 and 2: the rotary bulb tube for image scanning comprises a tube core, wherein the tube core comprises a tube shell, a cathode 1 and an anode target disc, the cathode 1 and the anode target disc are installed in the tube shell, the rotary bulb tube further comprises a cooling shell 2 and a cooling inner tube 3, the tube core is packaged in the cooling shell 2, a cooling cavity is reserved between the cooling shell and the cooling shell, a cooling medium inlet and a cooling medium outlet which are communicated with the cooling cavity are formed in the cooling shell 2, the anode target disc is of a hollow structure, one end of the cooling inner tube 3 is communicated with an inner cavity of the anode target disc, the other end of the cooling inner tube penetrates through the anode target disc and extends to the outside of the cooling shell 2, and a fluid outlet 4 communicated with the inner cavity of the anode target disc is formed in the anode target disc. The tube shell comprises an end cover 5, a cathode part 6 and an anode part 7 which are sequentially and hermetically connected from top to bottom, cooling fins are arranged on the outer surfaces of the cathode part 6 and the anode part 7 in an annular array, and the cooling fins on the cathode part 6 and the anode part 7 are arranged in a one-to-one correspondence mode. The width of the cooling fins of the anode part 7 is larger than that of the cooling fins of the cathode part 6, the tube core is fixedly arranged in the middle of the cooling shell 2 through the cooling fins of the anode part 7, and the tube core and the cooling fins are coaxially arranged.

The cooling medium inlet and the cooling medium outlet are respectively located at the lower end and the upper end of the cooling housing 2, and are respectively located at one opposite side of the cooling housing 2. The anode target disc comprises a flange plate 8, an anode target surface 9, a rotor 10, a bearing 11 and a stator 12, wherein the stator 12 is fixedly installed with a tube shell through the flange plate 8, the rotor 10 is rotatably connected with the stator 12 through the bearing 11, the anode target surface 9 is fixedly connected with the upper end of the rotor 10, and the cooling inner tube 3 extends into the stator 12. The upper end of the stator 12 is provided with a plurality of annular grooves, and the lower end of the anode target surface 9 is provided with cooling rings which correspond to the annular grooves one by one. The stator 12 is a hollow T-shaped structure, the cooling inner tube 3 extends to the upper end of the stator 12, and the fluid outlet 4 is opened at the lower end of the stator 12. And a heat dissipation disc 13 is arranged at one end of the cooling inner pipe 3, which is positioned at the stator 12.

While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The rotary ball tube for image scanning comprises a tube core, wherein the tube core comprises a tube shell, a cathode (1) and an anode target disc, the cathode (1) and the anode target disc are arranged in the tube shell, and the rotary ball tube is characterized in that: still include cooling shell (2) and cooling inner tube (3), the tube core is encapsulated in cooling shell (2), leaves the cooling chamber between the two, be provided with the coolant import and the coolant export with the cooling chamber intercommunication on cooling shell (2), the anode target dish is hollow structure, cooling inner tube (3) one end and anode target dish inner chamber intercommunication, the other end passes the anode target dish and extends to cooling shell (2) outside, be provided with fluid outlet (4) rather than the inner chamber intercommunication on the anode target dish.

2. The rotary bulb for image scanning according to claim 1, wherein: the tube shell comprises an end cover (5), a cathode part (6) and an anode part (7) which are sequentially and hermetically connected from top to bottom, wherein cooling fins are arranged on the outer surfaces of the cathode part (6) and the anode part (7) in an annular array mode, and the cooling fins on the cathode part (6) and the anode part (7) are arranged in a one-to-one correspondence mode.

3. The rotary bulb for image scanning according to claim 2, wherein: the width of the cooling fin of the anode part (7) is larger than that of the cooling fin of the cathode part (6), the tube core is fixedly arranged in the middle of the cooling shell (2) through the cooling fin of the anode part (7), and the tube core and the cooling fin are coaxially arranged.

4. The rotary bulb for image scanning according to claim 3, wherein: the cooling medium inlet and the cooling medium outlet are respectively positioned at the lower end and the upper end of the cooling shell (2) and are respectively positioned at one opposite side of the cooling shell (2).

5. The rotary bulb for image scanning according to any one of claims 1 to 4, wherein: the anode target disc comprises a flange plate (8), an anode target surface (9), a rotor (10), a bearing (11) and a stator (12), wherein the stator (12) is fixedly installed with a tube shell through the flange plate (8), the rotor (10) is rotatably connected with the stator (12) through the bearing (11), the anode target surface (9) is fixedly connected with the upper end of the rotor (10), and the cooling inner tube (3) extends into the stator (12).

6. The rotary bulb for image scanning according to claim 5, wherein: the upper end of the stator (12) is provided with a plurality of annular grooves, and the lower end of the anode target surface (9) is provided with cooling rings which correspond to the annular grooves one by one.

7. The rotary bulb for image scanning according to claim 6, wherein: the stator (12) is of a hollow T-shaped structure, the cooling inner pipe (3) extends to the upper end of the stator (12), and the fluid outlet (4) is formed in the lower end of the stator (12).

8. The rotary bulb for image scanning according to claim 7, wherein: and a heat dissipation disc (13) is arranged at one end of the cooling inner pipe (3) positioned at the stator (12).