Bulb tube

Abstract

The invention provides a bulb tube. The bulb tube comprises an anode target disc, a rotor, a stator, a rotating shaft, a shell, cooling liquid and a heat exchanger, the shell is provided with a mounting cavity, the stator is mounted on the inner side wall of the mounting cavity, one side of the rotating shaft is connected with the anode target disc, and the rotor sleeves the rotating shaft; the shell is provided with a first flow channel and a second flow channel, the rotating shaft is provided with a first liquid storage tank in the circumferential direction, the rotating shaft is provided with a second liquid storage tank in the circumferential direction, the rotating shaft is provided with a third flow channel and a fourth flow channel, the anode target disc is provided with a fifth flow channel, one side of the fifth flow channel is communicated with the third flow channel, and the other side of the fifth flow channel is communicated with the fourth flow channel; the heat exchanger is connected with the first flow channel and the second flow channel. The cooling liquid circularly flows in the preset path, heat in the shell, the rotating shaft and the anode target disc is taken away, the problems that a traditional bulb tube is insufficient in heat dissipating capacity and short in service life are solved, and the service life of the bulb tube is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of CT tubes, and in particular to a tube. Background Art

[0002] There are two major "consumables" in the imaging equipment industry, namely the cold head of MR and the tube of CT. The tube is actually a huge, well-protected light bulb that emits invisible light. The cathode is composed of a filament, a focusing cover, a cathode sleeve and a glass column core. The electrons generated by the heating of the cathode filament form a space charge around the filament, namely an electron cloud. Its function is to emit electrons and focus the high-speed electron beam so that the electron beam has a certain shape and size to bombard the anode target plate to produce X-rays with a focus.

[0003] At present, the main heat dissipation methods of the anode target plate are mainly divided into several parts. Part of the heat is radiated to the shell, and part is taken away through the rotor copper sleeve and bearings. The rotor copper sleeve and bearings absorb most of the heat. The above cooling method is inefficient and causes the components inside the tube to heat up, resulting in a shorter service life of the tube. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. For example, the present invention aims to provide a tube that can solve the deficiencies of the prior art, improve the heat dissipation efficiency of the tube, and extend the service life of the tube.

[0005] To this end, the present invention provides a tube, comprising: an anode target plate, a rotor, a stator, a rotating shaft, a shell, a coolant and a heat exchanger; the shell is provided with an installation cavity, the stator is installed on the inner side wall of the installation cavity, one side of the rotating shaft is connected to the anode target plate, the rotor is sleeved on the rotating shaft, and the stator surrounds the rotor; one side of the shell is provided with a first flow channel communicating with the installation cavity, the other side of the shell is provided with a second flow channel communicating with the installation cavity, the rotating shaft is provided with a first liquid storage tank adapted to the first flow channel along the circumferential direction, and the rotating shaft is provided with a second liquid storage tank adapted to the first flow channel along the circumferential direction. The second flow channel is adapted to a second liquid storage tank, the rotating shaft is provided with a third flow channel connected to the first liquid storage tank, the rotating shaft is provided with a fourth flow channel connected to the second liquid storage tank, the anode target plate is provided with a fifth flow channel, one side of the fifth flow channel is connected to the third flow channel, and the other side of the fifth flow channel is connected to the fourth flow channel; one side of the heat exchanger is connected to the first flow channel, and the other side of the heat exchanger is connected to the second flow channel, and the coolant can flow in the first flow channel, the second flow channel, the third flow channel, the fourth flow channel and the fifth flow channel.

[0006] The present invention sets a first flow channel, a second flow channel, a third flow channel, a fourth flow channel, a fifth flow channel, a first liquid storage tank and a second liquid storage tank, so that during the operation of the tube, the coolant can circulate between the first flow channel, the second flow channel, the third flow channel, the fourth flow channel and the fifth flow channel and the heat exchanger under the action of a pump, and the heat exchanger can cool the coolant that has absorbed heat. The coolant flows along a preset path, and the coolant is finally discharged from the second flow channel and enters the heat exchanger. The heat exchanger cools the coolant and then flows into the first flow channel. During the flow, the coolant passes through the shell, the rotating shaft and the anode target plate, and takes away the heat in the shell, the rotating shaft and the anode target plate, thereby solving the problem of insufficient heat dissipation and short life of the traditional tube and extending the service life of the tube.

[0007] Optionally, the first flow channel is located on an upper side of the shell, and the second flow channel is located on a lower side of the shell.

[0008] Optionally, the rotating shaft is circumferentially mounted with two oppositely disposed first seals, the first liquid storage tank is located between the two first seals, and the rotating shaft is circumferentially mounted with two oppositely disposed second seals, the second liquid storage tank is located between the two second seals.

[0009] Optionally, the mounting cavity includes a first mounting portion and a second mounting portion, the first mounting portion is connected to the second mounting portion, the inner diameter of the first mounting portion is larger than the inner diameter of the second mounting portion, the stator is installed on the inner side wall of the first mounting portion, the first flow channel is connected to the second mounting portion, and the second flow channel is connected to the second mounting portion.

[0010] Optionally, the fifth flow channel is spiral-shaped, the outer side of the fifth flow channel is connected to the third flow channel, and the inner side of the fifth flow channel is connected to the fourth flow channel.

[0011] Optionally, the depth of the first liquid storage tank is greater than the depth of the second liquid storage tank.

[0012] Optionally, the coolant is any one of liquid metal, water and oil, and the coolant is driven by a pump to circulate between the first flow channel, the second flow channel, the third flow channel, the fourth flow channel, the fifth flow channel and the heat exchanger.

[0013] Optionally, the third flow channel and the fourth flow channel both extend along the axial direction of the rotating shaft.

[0014] Optionally, the shell is made of gold-plated stainless steel.

[0015] Optionally, the rotating shaft is made of molybdenum alloy.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] Figure 1 is a schematic diagram of a ball tube in one embodiment of the present invention;

[0019] Figure 2 Schematic diagram of an anode target plate in one embodiment of the present invention.

[0020] Reference numerals:

[0021] 1-housing, 2-first mounting part, 3-second mounting part, 4-rotating shaft, 5-anode target plate, 6-first flow channel, 7-first liquid storage tank, 8-third flow channel, 9-fifth flow channel, 10-fourth flow channel, 11-second liquid storage tank, 12-second flow channel, 13-first sealing member, 14-second sealing member, 15-rotor, 16-stator. DETAILED DESCRIPTION

[0022] The technical scheme of the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the following embodiments are only exemplary descriptions and explanations of the present invention and should not be construed as limiting the scope of protection of the present invention. All technologies implemented based on the above content of the present invention are included in the scope that the present invention is intended to protect.

[0023] Please refer to Figure 1 to Figure 2As shown, this embodiment provides a tube, which mainly includes an anode target plate 5, a rotor 15, a stator 16, a rotating shaft 4, a shell 1, a heat exchanger and a coolant; the shell 1 is provided with an installation cavity, and the stator 16 is installed on the inner side wall of the installation cavity, one side of the rotating shaft 4 is connected to the anode target plate 5, the rotating shaft 4 is connected to the rotor 15, the rotor 15 is sleeved on the rotating shaft 4, and can rotate synchronously with the rotating shaft 4; one side of the shell 1 is provided with a first flow channel 6 connected to the installation cavity, the other side of the shell 1 is provided with a second flow channel 12 connected to the installation cavity, and the rotating shaft 4 is provided with a first liquid storage tank 7 adapted to the first flow channel 6 along the circumferential direction. The rotating shaft 4 is provided with a second liquid storage tank 11 adapted to the second flow channel 12 along the circumferential direction, the rotating shaft 4 is provided with a third flow channel 8 connected to the first liquid storage tank 7, the rotating shaft 4 is provided with a fourth flow channel 10 connected to the second liquid storage tank 11, the anode target plate 5 is provided with a fifth flow channel 9, one side of the fifth flow channel 9 is connected to the third flow channel 8, and the other side of the fifth flow channel 9 is connected to the fourth flow channel 10; one side of the heat exchanger is connected to the first flow channel 6, and the other side of the heat exchanger is connected to the second flow channel 12, and the coolant can flow in the first flow channel 6, the second flow channel 12, the third flow channel 8, the fourth flow channel 10 and the fifth flow channel 9.

[0024] In the above embodiment, the stator 16 can drive the rotor 15 to rotate after generating a magnetic field, and the rotor 15 can drive the rotating shaft 4 to rotate after rotating. Specifically, when photographing, the staff first controls the application of a magnetic field to drive the rotating shaft 4 to rotate, and the rotating shaft 4 drives the anode target plate 5 to rotate. At this time, high voltage is applied to the positive and negative electrodes, and the cathode gathers a high-speed electron beam, so that the electron beam has a certain shape and size to bombard the anode target plate 5 to generate X-rays with a focus. Since the anode target plate 5 keeps rotating at a high speed at all times, the heat of the high-speed electron bombardment is evenly distributed on the anode target plate 5, and the heat per unit area is greatly reduced, thereby improving the power of the tube.

[0025] In the above embodiment, the anode target plate 5 generates a large amount of heat during operation of the bulb. During this period, the coolant (the coolant can be liquid metal, water, oil, etc.) enters the housing 1 from the first flow channel 6, and the coolant flows from the first flow channel 6 to the first liquid reservoir 7. The coolant is stored in the first liquid reservoir 7, and the coolant flows from the first liquid reservoir 7 to the third flow channel 8 in the rotating shaft 4, and then the coolant flows from the third flow channel 8 to the fifth flow channel 9 in the anode target plate 5, and then the coolant flows from the fifth flow channel 9 to the fourth flow channel 10, and then the coolant flows from the fourth flow channel 10 to the second liquid reservoir 11, and finally the coolant flows from the second liquid reservoir 11 to the second flow channel 12 and is discharged from the housing 1. , the heat exchanger collects and cools it, the depth of the first liquid storage tank 7 is greater than that of the second liquid storage tank 11, the third flow channel 8 will not pass through the second liquid storage tank 11 (the third flow channel 8 is closer to the axis of the rotating shaft 4 than the second liquid storage tank 11), the above-mentioned coolant passes through the shell 1, the rotating shaft 4 and the anode target plate 5 during the flow process, and the coolant can take away the heat in the shell 1, the rotating shaft 4 and the anode target plate 5 to dissipate the heat, and the coolant can circulate between the first flow channel 6, the second flow channel 12, the third flow channel 8, the fourth flow channel 10 and the fifth flow channel 9 and the heat exchanger under the action of the pump, and the heat exchanger can cool the coolant that has absorbed the heat.

[0026] In the above embodiment, during the operation of the bulb, the coolant enters the shell 1 from the first flow channel 6, flows along a preset path, and finally is discharged from the second flow channel 12 and enters the heat exchanger. The cooled coolant flows into the first flow channel 6 again. During the flow, the coolant passes through the shell 1, the rotating shaft 4 and the anode target plate 5, and takes away the heat in the shell 1, the rotating shaft 4 and the anode target plate 5, thereby solving the problem of insufficient heat dissipation and short life of the traditional bulb, and extending the service life of the bulb.

[0027] Further, in some embodiments, the first flow channel 6 is located on the upper side of the housing 1, the second flow channel 12 is located on the lower side of the housing 1, and the third flow channel 8 and the fourth flow channel 10 both extend along the axial direction of the rotating shaft 4. In this embodiment, the coolant enters the housing 1 from the first flow channel 6, flows along a preset path, and is finally discharged from the second flow channel 12 to enter the heat exchanger for cooling. The cooled coolant enters the first flow channel 6 again. Since the first flow channel 6 is located on the upper side of the housing 1, the coolant can enter the first flow channel 6 under the action of gravity, thereby avoiding the problem of the coolant spilling out of the first flow channel 6.

[0028] Further, two oppositely arranged first seals 13 are circumferentially mounted on the rotating shaft 4. The first liquid storage tank 7 is located between the two first seals 13. Two oppositely arranged second seals 14 are circumferentially mounted on the rotating shaft 4. The second liquid storage tank 11 is located between the two second seals 14. In this embodiment, the coolant flows from the first flow channel 6 to the first liquid storage tank 7, and the coolant is stored in the first liquid storage tank 7. First seals 13 are provided on both sides of the first liquid storage tank 7. The first seals 13 can block the gap between the rotating shaft 4 and the installation cavity, avoiding the problem of coolant leakage; the coolant flows from the second liquid storage tank 11 to the second flow channel 12, and the coolant is stored in the second liquid storage tank 11. Second seals 14 are provided on both sides of the second liquid storage tank 11. The second seals 14 can block the gap between the rotating shaft 4 and the installation cavity, avoiding the problem of coolant leakage.

[0029] Further, in some embodiments, the installation cavity includes a first installation part 2 and a second installation part 3. The first installation part 2 communicates with the second installation part 3. The inner diameter of the first installation part 2 is larger than the inner diameter of the second installation part 3. The stator 16 is installed in the first installation part 2. The first flow channel 6 communicates with the second installation part 3. The second flow channel 12 communicates with the second installation part 3. In this embodiment, the stator 16 is circumferentially installed on the inner side wall of the first installation part 2. The inner diameter of the rotor 15 is adapted to the rotating shaft 4. The rotating shaft 4 sequentially passes through the rotor 15 and the second installation part 3, thereby reducing the gap between the rotating shaft 4 and the second installation part 3 and avoiding the problem of coolant leakage.

[0030] Further, the fifth flow channel 9 is spiral. The outer side of the fifth flow channel 9 communicates with the third flow channel 8. The inner side of the fifth flow channel 9 communicates with the fourth flow channel 10. In this embodiment, the spiral fifth flow channel 9 can be more widely dispersed and have a longer path distance on the anode target disc 5, so that the coolant can stay in the fifth flow channel 9 for a longer time, thereby improving the heat dissipation effect on the anode target disc 5.

[0031] Further, the material of the housing 1 is gold-plated stainless steel. In this embodiment, the gold-plated stainless steel has the advantages of low density, high strength, excellent corrosion resistance and good heat resistance. The gold-plated stainless steel is an existing known material, and its application to the housing 1 can improve the overall performance of the X-ray tube.

[0032] Further, the coolant can be any one of liquid metal, water and oil. The coolant is circulated between the first flow channel 6, the second flow channel 12, the third flow channel 8, the fourth flow channel 10, the fifth flow channel 9 and the heat exchanger by a pump.

[0033] Furthermore, the material of the rotating shaft 4 is molybdenum alloy. In this embodiment, the molybdenum alloy has good thermal and electrical conductivity and a low expansion coefficient, and has high strength at high temperatures (1100 - 1650 °C), and is easier to process than tungsten. The molybdenum alloy is an existing known material, and its application to the rotating shaft 4 can improve the overall performance of the X-ray tube.

[0034] An embodiment of the present invention provides an X-ray tube, including an anode target disc 5, a rotor 15, a stator 16, a rotating shaft 4, a housing 1, a heat exchanger and a coolant; the housing 1 is provided with a first mounting portion 2 and a second mounting portion 3, the inner side wall of the first mounting portion 2 is provided with the stator 16, one side of the rotating shaft 4 is connected to the anode target disc 5, and the rotating shaft 4 is connected to the rotor 15; one side of the housing 1 is provided with a first flow channel 6 communicating with the second mounting portion 3, the other side of the housing 1 is provided with a second flow channel 12 communicating with the second mounting portion 3, the rotating shaft 4 is circumferentially provided with a first liquid storage tank 7 adapted to the first flow channel 6, the rotating shaft 4 is circumferentially provided with a second liquid storage tank 11 adapted to the second flow channel 12, the rotating shaft 4 is provided with a third flow channel 8 communicating with the first liquid storage tank 7, the rotating shaft 4 is provided with a fourth flow channel 10 communicating with the second liquid storage tank 11, the anode target disc 5 is provided with a fifth flow channel 9, one side of the fifth flow channel 9 is communicated with the third flow channel 8, and the other side of the fifth flow channel 9 is communicated with the fourth flow channel 10; one side of the heat exchanger is communicated with the first flow channel 6, the other side of the heat exchanger is communicated with the second flow channel 12, and the coolant flows in the first flow channel 6, the second flow channel 12, the third flow channel 8, the fourth flow channel 10 and the fifth flow channel 9.

[0035] In the above embodiment, a large amount of heat is generated by the anode target disc 5 during the operation of the X-ray tube. The coolant enters the housing 1 from the first flow channel 6, the coolant flows from the first flow channel 6 to the first liquid storage tank 7, the coolant is stored in the first liquid storage tank 7, and the coolant flows from the first liquid storage tank 7 into the third flow channel 8 in the rotating shaft 4, then the coolant flows from the third flow channel 8 into the fifth flow channel 9 in the anode target disc 5, then the coolant flows from the fifth flow channel 9 into the fourth flow channel 10, then the coolant flows from the fourth flow channel 10 into the second liquid storage tank 11, and finally the coolant flows from the second liquid storage tank 11 into the second flow channel 12 and is discharged from the housing 1. The heat exchanger collects and cools it. The above coolant flows through the housing 1, the rotating shaft 4 and the anode target disc 5 during the flow process, and the coolant can take away the heat in the housing 1, the rotating shaft 4 and the anode target disc 5 and dissipate the heat. In this embodiment, during the operation of the X-ray tube, the coolant enters the housing 1 from the first flow channel 6, the coolant flows along a preset path, and the coolant finally discharges from the second flow channel 12. The coolant will pass through the housing 1, the rotating shaft 4 and the anode target disc 5 during the flow process and take away the heat in the housing 1, the rotating shaft 4 and the anode target disc 5, solving the problems of insufficient heat dissipation and short service life of the traditional X-ray tube and extending the service life of the X-ray tube.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0038] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0040] In the present invention, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0041] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tube, characterized in that, it includes: an anode target disc (5), a rotor (15), a stator (16), a rotating shaft (4), a housing (1), a coolant and a heat exchanger; The housing (1) is provided with an installation cavity, the inner side wall of the installation cavity is provided with the stator (16), one side of the rotating shaft (4) is connected to the anode target disc (5), the rotor (15) is sleeved on the rotating shaft (4), and the stator (16) surrounds the rotor (15); One side of the housing (1) is provided with a first flow channel (6) communicated with the installation cavity, the other side of the housing (1) is provided with a second flow channel (12) communicated with the installation cavity, the rotating shaft (4) is circumferentially provided with a first liquid storage tank (7) adapted to the first flow channel (6), the rotating shaft (4) is circumferentially provided with a second liquid storage tank (11) adapted to the second flow channel (12), the rotating shaft (4) is provided with a third flow channel (8) communicated with the first liquid storage tank (7), the rotating shaft (4) is provided with a fourth flow channel (10) communicated with the second liquid storage tank (11), the anode target disc (5) is provided with a fifth flow channel (9), one side of the fifth flow channel (9) is communicated with the third flow channel (8), and the other side of the fifth flow channel (9) is communicated with the fourth flow channel (10); One side of the heat exchanger is communicated with the first flow channel (6), the other side of the heat exchanger is communicated with the second flow channel (12), and the coolant can flow in the first flow channel (6), the second flow channel (12), the third flow channel (8), the fourth flow channel (10) and the fifth flow channel (9).

2. The tube according to claim 1, characterized in that, the first flow channel (6) is located on the upper side of the housing (1), and the second flow channel (12) is located on the lower side of the housing (1).

3. The tube according to claim 1, characterized in that, Two relatively arranged first seals (13) are circumferentially installed on the rotating shaft (4), the first liquid storage tank (7) is located between the two first seals (13), two relatively arranged second seals (14) are circumferentially installed on the rotating shaft (4), and the second liquid storage tank (11) is located between the two second seals (14).

4. The tube according to claim 1, characterized in that, the installation cavity includes a first installation part (2) and a second installation part (3), the first installation part (2) is communicated with the second installation part (3), the inner diameter of the first installation part (2) is larger than the inner diameter of the second installation part (3), the stator (16) is installed on the inner side wall of the first installation part (2), the first flow channel (6) is communicated with the second installation part (3), and the second flow channel (12) is communicated with the second installation part (3).

5. The tube according to claim 1, characterized in that, the fifth flow channel (9) is spiral, the outer side of the fifth flow channel (9) is communicated with the third flow channel (8), and the inner side of the fifth flow channel (9) is communicated with the fourth flow channel (10).

6. The tube according to claim 1, characterized in that, the depth of the first liquid storage tank (7) is greater than the depth of the second liquid storage tank (11).

7. The tube according to claim 1, characterized in that, the coolant is any one of liquid metal, water and oil, and the coolant is circulated between the first flow channel (6), the second flow channel (12), the third flow channel (8), the fourth flow channel (10), the fifth flow channel (9) and the heat exchanger by being driven by a pump.

8. The tube according to claim 1, characterized in that, both the third flow channel (8) and the fourth flow channel (10) extend along the axial direction of the rotating shaft (4).

9. The tube according to claim 1, characterized in that, the material of the housing (1) is gold-plated stainless steel.

10. The tube according to claim 1, characterized in that, the material of the rotating shaft (4) is molybdenum alloy.

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