Neutron tube aging device

Abstract

The utility model discloses a neutron tube aging device, which belongs to the field of neutron tubes and comprises a cylinder, an upper cover and a lower cover, the upper cover and the lower cover are detachably connected with two ends of the cylinder respectively, a first sealing element is arranged between the upper cover and the cylinder, and a second sealing element is arranged between the lower cover and the cylinder. A neutron tube, a high-voltage power supply and a transformer which are electrically connected in sequence are arranged in the cylinder, and the cylinder is filled with insulating oil; the upper cover is provided with a first binding post, one end of the first binding post is used for being electrically connected with an external power supply, the other end of the first binding post penetrates through the upper cover, extends into the cylinder and is electrically connected with the neutron tube, the lower cover is provided with a second binding post, one end of the second binding post is used for being electrically connected with the external power supply, and the other end of the second binding post penetrates through the lower cover, extends into the cylinder and is electrically connected with the transformer. Therefore, the neutron tube aging device can be carried and transported more conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of neutron tube technology, specifically relating to a neutron tube aging device. Background Technology

[0002] A neutron tube is a small, vacuum-sealed, controllable neutron source device. It is a vacuum device that completely seals the ion source, target, acceleration system, and pressure regulation system within a ceramic or glass tube. The working principle of a neutron tube is as follows: deuterium ions are generated by the ion source, accelerated by the accelerator, and then react with tritium or deuterium atoms in the target to undergo DT (deuterium-tritium) or DD (deuterium-deuterium) fusion reactions, producing neutrons with energies of 14 MeV or 2.5 MeV. The performance of the neutron tube determines the neutron yield, lifetime, and stability of the neutron generator.

[0003] Neutron tube aging is a process that improves the performance stability and reliability of neutron tubes. It typically employs high-voltage pulse discharge, using a high-voltage pulse to discharge the neutron tube, stimulating internal physical and chemical reactions, eliminating burrs on the electrode surface, accelerating the exposure of potential defects, and checking whether the equipment's stability and neutron yield meet standards. Aging ensures stable operation of the neutron tube in subsequent use, reducing failure rates and maintenance costs, and is a crucial step in ensuring long-term stable operation of the equipment.

[0004] Currently, common neutron tube aging devices include a power supply, a support assembly, and a high-voltage power transformer. The support assembly supports the neutron tube, and the power supply provides power to both the neutron tube and the high-voltage power transformer. The high-voltage power transformer is electrically connected to the neutron tube to provide it with high-voltage current. This structure, by supplying high-voltage current to the neutron tube through the high-voltage power transformer, enables neutron tube aging. However, because the aforementioned neutron tube aging device is relatively bulky and requires placement on an aging platform for operation, it is inconvenient to carry and transport. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a neutron tube aging device. The technical problem to be solved by this utility model is achieved through the following technical solution:

[0006] In the first aspect, this utility model provides a neutron tube aging device, including a cylinder, an upper cover and a lower cover, the upper cover and the lower cover being detachably connected to both ends of the cylinder, a first sealing element being provided between the upper cover and the cylinder, a second sealing element being provided between the lower cover and the cylinder, a neutron tube, a high-voltage power supply and a transformer being provided in sequence and electrically connected inside the cylinder, and insulating oil being filled inside the cylinder.

[0007] The upper cover is provided with a first terminal, one end of which is used to connect to an external power source, and the other end extends through the upper cover into the cylinder and is connected to the neutron tube. The lower cover is provided with a second terminal, one end of which is used to connect to an external power source, and the other end extends through the lower cover into the cylinder and is connected to the transformer.

[0008] In one embodiment of the present invention, an upper mounting base and a lower mounting base are also included. The upper mounting base includes a first base plate and a first annular protrusion disposed on the first base plate. The lower mounting base includes a second base plate and a second annular protrusion disposed on the second base plate. The first end of the neutron tube is sleeved in the first annular protrusion and the second end is sleeved in the second annular protrusion.

[0009] The length of the first base plate is greater than the outer diameter of the first end of the neutron tube and less than the inner diameter of the cylinder, and the length of the second base plate is greater than the outer diameter of the second end of the neutron tube and less than the inner diameter of the cylinder.

[0010] In one embodiment of this utility model, a through hole is provided on the second base plate. The diameter of the through hole is equal to the inner diameter of the second annular protrusion and the two are connected. Internal threads are provided on the inner walls of the through hole and the second annular protrusion. One end of the high-voltage power supply is provided with a threaded rod with external threads. The external threads and internal threads are threadedly connected.

[0011] In one embodiment of this utility model, one of the high-voltage power supply and the transformer is provided with a first slot, and the other is snapped into the first slot;

[0012] The lower cover has a second slot, in which the transformer is snapped into.

[0013] In one embodiment of the present invention, the upper cover includes an upper plate and a first protruding part. The upper plate abuts against the upper end face of the cylinder. The first protruding part extends into the cylinder and is threadedly connected to the inner wall of the cylinder. The first sealing element is a first sealing ring sleeved on the outer periphery of the first protruding part.

[0014] In one embodiment of this utility model, the first sealing ring is a double-layer sealing ring;

[0015] Alternatively, multiple first sealing rings may be provided, and these multiple first sealing rings may be arranged sequentially along the axial direction of the cylinder.

[0016] In one embodiment of the present invention, the lower cover includes a lower plate portion and a second protruding portion. The lower plate portion abuts against the lower end face of the cylinder body, the second protruding portion extends into the cylinder body and is threadedly connected to the inner wall of the cylinder body, and the second sealing element is a second sealing ring sleeved on the outer periphery of the second protruding portion.

[0017] In one embodiment of this utility model, the second sealing ring is a double-layer sealing ring;

[0018] Alternatively, multiple second sealing rings may be provided, and these multiple second sealing rings may be arranged sequentially along the axial direction of the cylinder.

[0019] In one embodiment of this utility model, the bottom of the cylinder is further provided with a support base, which includes a hollow cylindrical shell and an annular plate. The hollow cylindrical shell is sleeved on the outer periphery of the cylinder, and the end faces of the annular plate and the hollow cylindrical shell are connected and matched with the lower cover for limiting. The second terminal extends out through the central hole of the annular plate.

[0020] In one embodiment of this utility model, the cylinder is a transparent cylinder.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] In the above-described scheme of this application, the neutron tube aging device includes a cylinder, an upper cover, and a lower cover. The upper and lower covers are detachably connected to both ends of the cylinder. A first sealing element is provided between the upper cover and the cylinder, and a second sealing element is provided between the lower cover and the cylinder. The cylinder contains a neutron tube, a high-voltage power supply, and a transformer, all electrically connected in sequence, and is filled with insulating oil. With this structure, the neutron tube, high-voltage power supply, and transformer are all placed inside the cylinder. The upper and lower covers seal both ends of the cylinder. The high-voltage power supply and transformer work together to provide high-voltage current and voltage to the neutron tube, allowing the neutron tube to undergo aging tests under high-voltage conditions. When the cylinder is filled with insulating oil, it ensures that the internal components of the device will not experience breakdown or discharge due to excessive voltage, thereby protecting the safety of the device and operators. Furthermore, the presence of a first sealing element between the upper cover and the cylinder improves the sealing performance between them, while the presence of a second sealing element between the lower cover and the cylinder further enhances the sealing performance. This prevents dust, moisture, and other impurities from the external environment from entering the device and affecting the performance of the neutron tube, while also preventing personnel from being exposed to the high-voltage environment inside the cylinder and thus avoiding potential danger. Additionally, the upper cover has a first terminal block, one end of which is used for electrical connection to an external power source, and the other end extends through the upper cover into the cylinder and is electrically connected to the neutron tube. The lower cover has a second terminal block, one end of which is also used for electrical connection to an external power source, and the other end extends through the lower cover into the cylinder and is electrically connected to the transformer. In this way, the neutron tube can be connected to an external power source via the first terminal block to receive current, and the transformer can be connected to an external power source via the second terminal block to receive current. This ensures the normal operation of the neutron tube, high-voltage power supply, and transformer while maintaining the sealing and safety of the cylinder. Because the neutron tube aging device described in this application has a simple structure and is easy to install, with the neutron tube, high-voltage power supply and transformer all encapsulated in a cylindrical body, it is more convenient to carry and transport the neutron tube aging device.

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a neutron tube aging device provided in an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 An enlarged view at point A;

[0026] Figure 3 yes Figure 1 An enlarged view at point B;

[0027] Figure 4 yes Figure 1 Enlarged diagram at point C.

[0028] Reference numerals: 1-Cylinder, 2-Upper cover, 3-Lower cover, 4-First seal, 5-Second seal, 6-Neutron tube, 7-High voltage power supply, 8-Transformer, 9-First terminal, 10-Second terminal, 11-Upper mounting base, 12-Lower mounting base, 13-Support base. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0030] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a neutron tube aging device, including a cylinder 1, an upper cover 2, and a lower cover 3. The upper cover 2 and the lower cover 3 are detachably connected to both ends of the cylinder 1. A first sealing element 4 is provided between the upper cover 2 and the cylinder 1, and a second sealing element 5 is provided between the lower cover 3 and the cylinder 1. A neutron tube 6, a high-voltage power supply 7, and a transformer 8 are provided inside the cylinder 1 in sequence and are electrically connected. The cylinder 1 is filled with insulating oil. A first terminal 9 is provided on the upper cover 2. One end of the first terminal 9 is used for electrical connection to an external power source, and the other end extends through the upper cover 2 into the cylinder 1 and is electrically connected to the neutron tube 6. A second terminal 10 is provided on the lower cover 3. One end of the second terminal 10 is used for electrical connection to an external power source, and the other end extends through the lower cover 3 into the cylinder 1 and is electrically connected to the transformer 8.

[0031] In some embodiments of this application, the high-voltage power supply 7 is an electronic device that converts low voltage to high voltage. In this embodiment, the high-voltage power supply 7 is used to convert low-voltage AC power into 100kV high-voltage DC power via a voltage multiplier rectifier circuit.

[0032] In some embodiments of this application, the transformer 8 is a device that uses the principle of electromagnetic induction to change AC voltage. In this embodiment, the transformer 8, through its unique winding structure and the principle of electromagnetic induction, can increase or decrease the voltage input from an external power source to the required output voltage, and then transmit the output voltage to the high-voltage power supply 7. The high-voltage power supply 7 is used to convert the output voltage into a high-voltage current and transmit the high-voltage current to the neutron tube 6, enabling the neutron tube 6 to perform aging tests.

[0033] In some embodiments of this application, such as Figure 2 As shown, the first terminal 9 and the upper cover 2 are integrally formed, and the second terminal 10 and the lower cover 3 are integrally formed.

[0034] In some embodiments of this application, the first terminal 9 includes a neutron tube 6 anode voltage terminal, a hot wire voltage terminal, and a ground terminal, etc., to achieve ionization of the neutron tube 6. The second terminal 10 includes a transformer 8 drive voltage T5-1 terminal, a T5-2 terminal, a T5-3 terminal, a high-voltage sampling terminal, a current sampling terminal, and a ground terminal, to achieve high-voltage drive.

[0035] In some embodiments of this application, the insulating oil is dimethyl silicone oil. Before use, the dimethyl silicone oil can be vacuum dehydrated to improve its insulation performance.

[0036] In some embodiments of this application, during the aging test, power is first supplied to transformer 8 through the second terminal 10, and then high voltage is supplied to neutron tube 6 through transformer 8 and high voltage power supply 7. Then, it is observed whether there is arcing in neutron tube 6 and the relationship between neutron tube 6 and sampling current. If the sampling current is small, the high voltage is turned off, the upper anode power supply is turned on, and power is supplied to neutron tube 6 through the first terminal 9 to ionize neutron tube 6, thereby simulating the working state. After the ionization is stable, high voltage is supplied to neutron tube 6 through transformer 8 and high voltage power supply 7, and then it is observed again whether there is arcing in neutron tube 6 and the relationship between neutron tube 6 and sampling current.

[0037] In some embodiments of this application, the outer diameter of the neutron tube aging device is 70 mm and the height is 1 m.

[0038] In the above-described scheme of this application, the neutron tube aging device includes a cylinder 1, an upper cover 2, and a lower cover 3. The upper cover 2 and the lower cover 3 are detachably connected to both ends of the cylinder 1. A first sealing element 4 is provided between the upper cover 2 and the cylinder 1, and a second sealing element 5 is provided between the lower cover 3 and the cylinder 1. The cylinder 1 contains a neutron tube 6, a high-voltage power supply 7, and a transformer 8, which are electrically connected in sequence. The cylinder 1 is filled with insulating oil. With this structure, the neutron tube 6, the high-voltage power supply 7, and the transformer 8 are all placed inside the cylinder 1. The upper cover 2 and the lower cover 3 seal both ends of the cylinder 1. The high-voltage power supply 7 and the transformer 8 work together to provide high-voltage current and voltage to the neutron tube 6, allowing the neutron tube 6 to undergo aging tests under high-voltage conditions. When the cylinder 1 is filled with insulating oil, it can ensure that the internal components of the device will not break down or discharge due to excessive voltage, thereby protecting the safety of the device and the operators. Furthermore, the presence of a first sealing element 4 between the upper cover 2 and the cylinder 1 improves the sealing performance between them. Similarly, the presence of a second sealing element 5 between the lower cover 3 and the cylinder 1 further enhances the sealing performance. This prevents dust, moisture, and other impurities from the external environment from entering the device and affecting the performance of the neutron tube 6, while also preventing personnel from being exposed to the high-pressure environment inside the cylinder 1 and thus avoiding potential danger. Additionally, the upper cover 2 has a first terminal 9, one end of which is used for electrical connection to an external power source, and the other end extends through the upper cover 2 into the cylinder 1 and is electrically connected to the neutron tube 6. The lower cover 3 has a second terminal 10, one end of which is used for electrical connection to an external power source, and the other end extends through the lower cover 3 into the cylinder 1 and is electrically connected to the transformer 8. Thus, the neutron tube 6 can be connected to an external power source via the first terminal 9 to supply current, and the transformer 8 can be connected to an external power source via the second terminal 10 to supply current. This ensures the normal operation of the neutron tube 6, high-voltage power supply 7, and transformer 8 while maintaining the airtightness and safety of the cylinder 1. Because the neutron tube aging device described in this application has a simple structure and is easy to install, with the neutron tube 6, high-voltage power supply 7, and transformer 8 all encapsulated within the cylinder 1, the neutron tube aging device is easier to carry and transport.

[0039] In some embodiments of this application, such as Figure 1 and Figure 3As shown, the neutron tube aging device also includes an upper mounting base 11 and a lower mounting base 12. The upper mounting base 11 includes a first base plate and a first annular protrusion disposed on the first base plate. The lower mounting base 12 includes a second base plate and a second annular protrusion disposed on the second base plate. The first end of the neutron tube 6 is fitted into the first annular protrusion, and the second end is fitted into the second annular protrusion. The length of the first base plate is greater than the outer diameter of the first end of the neutron tube 6 and less than the inner diameter of the cylinder 1. The length of the second base plate is greater than the outer diameter of the second end of the neutron tube 6 and less than the inner diameter of the cylinder 1. With this structure, the neutron tube 6 can be installed and fixed by the upper mounting base 11 and the lower mounting base 12, making the installation of the neutron tube 6 more convenient. Furthermore, when the length of the first base plate is greater than the outer diameter of the first end of the neutron tube 6 and less than the inner diameter of the cylinder 1, the first base plate has a protrusion that protrudes relative to the neutron tube 6. The protrusion and the inner wall of the cylinder 1 mutually limit each other, which can improve the stability of the neutron tube 6 installation. When the length of the second base plate is greater than the outer diameter of the second end of the neutron tube 6 and less than the inner diameter of the cylinder 1, the second base plate has a protrusion that protrudes relative to the neutron tube 6. The protrusion and the inner wall of the cylinder 1 mutually limit each other, which can improve the stability of the neutron tube 6 installation.

[0040] In some embodiments of this application, there is a gap between the first base plate and the inner wall of the cylinder 1, and a gap between the second base plate and the inner wall of the cylinder 1, so as to facilitate the installation of the neutron tube 6.

[0041] In some embodiments of this application, the insulating oil does not pass over the mounting base 11.

[0042] In some embodiments of this application, the second base plate has a through hole, the diameter of which is equal to and communicates with the inner diameter of the second annular protrusion. Internal threads are provided on the inner walls of the through hole and the second annular protrusion. One end of the high-voltage power supply 7 has a threaded rod with external threads, and the external and internal threads are threaded together. With this structure, the second base plate can be threadedly connected to the high-voltage power supply 7, making the connection between the neutron tube 6 and the high-voltage power supply 7 more convenient.

[0043] In some embodiments of this application, one of the high-voltage power supply 7 and the transformer 8 is provided with a first slot, and the other is snapped into the first slot; the lower cover 3 is provided with a second slot, and the transformer 8 is snapped into the second slot. This structure, by snapping the high-voltage power supply 7 and the transformer 8 together, and by snapping the transformer 8 into the lower cover 3, makes the installation and fixing of the high-voltage power supply 7 and the transformer 8 more convenient, and improves the stability of the high-voltage power supply 7 and the transformer 8.

[0044] In some embodiments of this application, the upper cover 2 includes an upper plate and a first protruding portion. The upper plate abuts against the upper end face of the cylinder 1, and the first protruding portion extends into the cylinder 1 and is threadedly connected to the inner wall of the cylinder 1. The first sealing element 4 is a first sealing ring sleeved on the outer periphery of the first protruding portion. This structure not only makes the installation and connection between the upper cover 2 and the cylinder 1 more convenient, but also improves the sealing performance between the upper cover 2 and the cylinder 1, thereby improving the overall sealing performance of the neutron tube aging device.

[0045] In some embodiments of this application, the first sealing ring is a double-layer sealing ring; or, multiple first sealing rings are provided, and the multiple first sealing rings are arranged sequentially along the axial direction of the cylinder 1. This structure can further improve the sealing performance between the upper cover 2 and the cylinder 1.

[0046] In some embodiments of this application, the lower cover 3 includes a lower plate portion and a second protruding portion. The lower plate portion abuts against the lower end face of the cylinder 1, and the second protruding portion extends into the cylinder 1 and is threadedly connected to the inner wall of the cylinder 1. The second sealing element 5 is a second sealing ring sleeved on the outer periphery of the second protruding portion. This structure facilitates the installation and connection between the lower cover 3 and the cylinder 1, improves the sealing performance between the lower cover 3 and the cylinder 1, and thus enhances the overall sealing performance of the neutron tube aging device.

[0047] In some embodiments of this application, the second sealing ring is a double-layer sealing ring; or, multiple second sealing rings are provided, and the multiple second sealing rings are arranged sequentially along the axial direction of the cylinder 1. This structure can further improve the sealing performance between the lower cover 3 and the cylinder 1.

[0048] In some embodiments of this application, such as Figure 4 As shown, the bottom of the cylinder 1 is also provided with a support base 13. The support base 13 includes a hollow cylindrical shell and an annular plate. The hollow cylindrical shell is fitted around the outer periphery of the cylinder 1. The end faces of the annular plate and the hollow cylindrical shell are connected and matched with the lower cover 3 for limiting. The second terminal 10 extends through the central hole of the annular plate. With this structure, the bottom of the cylinder 1 is supported by the support base 13, which can further improve the overall stability of the neutron tube aging device and make the installation and use of the neutron tube aging device more convenient.

[0049] In some embodiments of this application, the cylinder 1 is a transparent cylinder 1. With this structure, the operator can observe the aging process of the neutron tube 6 inside the cylinder 1 in real time, identify and resolve potential problems based on the arcing situation and arcing location during the aging process of the neutron tube 6, thereby performing troubleshooting and routine maintenance, which helps to reduce equipment downtime and ensure its long-term stable operation.

[0050] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A neutron tube aging device, characterized in that, The device includes a cylinder, an upper cover, and a lower cover. The upper cover and the lower cover are detachably connected to both ends of the cylinder. A first sealing element is provided between the upper cover and the cylinder, and a second sealing element is provided between the lower cover and the cylinder. A neutron tube, a high-voltage power supply, and a transformer are provided inside the cylinder and are connected in sequence. The cylinder is filled with insulating oil. The upper cover is provided with a first terminal, one end of which is used to be electrically connected to an external power source, and the other end extends through the upper cover into the cylinder and is electrically connected to the neutron tube. The lower cover is provided with a second terminal, one end of which is used to be electrically connected to an external power source, and the other end extends through the lower cover into the cylinder and is electrically connected to the transformer.

2. The neutron tube aging apparatus according to claim 1, characterized in that, It also includes an upper mounting base and a lower mounting base. The upper mounting base includes a first base plate and a first annular protrusion disposed on the first base plate. The lower mounting base includes a second base plate and a second annular protrusion disposed on the second base plate. The first end of the neutron tube is sleeved in the first annular protrusion and the second end is sleeved in the second annular protrusion. The length of the first base plate is greater than the outer diameter of the first end of the neutron tube and less than the inner diameter of the cylinder, and the length of the second base plate is greater than the outer diameter of the second end of the neutron tube and less than the inner diameter of the cylinder.

3. The neutron tube aging apparatus according to claim 2, characterized in that, The second base plate is provided with a through hole, the diameter of the through hole is equal to the inner diameter of the second annular protrusion and the two are connected, the inner wall of the through hole and the second annular protrusion is provided with internal threads, one end of the high voltage power supply is provided with a threaded rod, the threaded rod is provided with external threads, and the external threads and the internal threads are threadedly connected.

4. The neutron tube aging apparatus according to claim 1, characterized in that, One of the high-voltage power supply and the transformer is provided with a first slot, and the other is snapped into the first slot; The lower cover is provided with a second slot, and the transformer is snapped into the second slot.

5. The neutron tube aging apparatus according to claim 1, characterized in that, The upper cover includes an upper plate and a first protrusion. The upper plate abuts against the upper end face of the cylinder. The first protrusion extends into the cylinder and is threadedly connected to the inner wall of the cylinder. The first sealing element is a first sealing ring sleeved on the outer periphery of the first protrusion.

6. The neutron tube aging apparatus according to claim 5, characterized in that, The first sealing ring is a double-layer sealing ring; Alternatively, multiple first sealing rings may be provided, and the multiple first sealing rings may be arranged sequentially along the axial direction of the cylinder.

7. The neutron tube aging apparatus according to claim 1, characterized in that, The lower cover includes a lower plate portion and a second protruding portion. The lower plate portion abuts against the lower end face of the cylinder body. The second protruding portion extends into the cylinder body and is threadedly connected to the inner wall of the cylinder body. The second sealing element is a second sealing ring sleeved on the outer periphery of the second protruding portion.

8. The neutron tube aging apparatus according to claim 7, characterized in that, The second sealing ring is a double-layer sealing ring; Alternatively, multiple second sealing rings may be provided, and the multiple second sealing rings may be arranged sequentially along the axial direction of the cylinder.

9. The neutron tube aging apparatus according to claim 1, characterized in that, The bottom of the cylinder is also provided with a support base, which includes a hollow cylindrical shell and an annular plate. The hollow cylindrical shell is sleeved on the outer periphery of the cylinder. The annular plate and the end face of the hollow cylindrical shell are connected and matched with the lower cover for limiting. The second terminal extends out through the central hole of the annular plate.

10. The neutron tube aging apparatus according to claim 1, characterized in that, The cylinder is a transparent cylinder.

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