Electron accelerator and composite insulating device therefor

Abstract

Disclosed in the present invention are an electron accelerator and a composite insulating device therefor. The electron accelerator comprises a housing cylinder, a base, an accelerating tube, and a high-voltage support. The housing cylinder is arranged on the outer side of the high-voltage support. The composite insulating device comprises a solid insulating device and a liquid-cooling heat dissipation device. The solid insulating device comprises a solid insulating cylinder and an insulating top cover; the solid insulating cylinder is arranged between the housing cylinder and the high-voltage support; the top of the solid insulating cylinder is fixed to the insulating top cover; the solid insulating cylinder comprises insulating films; and the insulating top cover is arranged above the high-voltage support. The liquid-cooling heat dissipation device comprises a liquid inlet, a liquid outlet, and an insulating liquid; and the insulating liquid flows through the outer sides of the solid insulating cylinder, the high-voltage support, and the accelerating tube. The present application achieves solid insulation, and has the advantages of a small size, a simple structure, convenient maintenance, safety and reliability. Moreover, a high-performance liquid material is used for insulation and heat dissipation, thereby significantly improving insulation and heat dissipation efficiency of the accelerator and ensuring stable operation of the accelerator.

Description

Electron accelerator and its composite insulation device Technical Field

[0001] This invention relates to an electron accelerator and its composite insulation device. Background Technology

[0002] A high-frequency, high-voltage accelerator is a device that uses a high-frequency electric field to accelerate charged particles. It is known that a high-frequency, high-voltage accelerator includes a sealed outer shell filled with a high-voltage insulating gas, such as sulfur hexafluoride (SF6), for insulation and heat dissipation.

[0003] However, high-voltage insulating gases have limited insulation properties and often result in bulky equipment. Meanwhile, among non-carbon dioxide greenhouse gases, sulfur hexafluoride (SF6) has the strongest greenhouse effect and is listed as one of the six restricted greenhouse gases.

[0004] SF6 has a greenhouse potential 23,500 times that of CO2 and a lifespan of approximately 3,200 years in the atmosphere. This means that 1 kg of SF6 leaked into the atmosphere has the same impact on global warming as approximately 23.5 tons of carbon dioxide, and it can be considered to remain permanently in the atmosphere, unable to be degraded, posing a huge threat to the environment.

[0005] Electron accelerators based on high-voltage insulating gases suffer from drawbacks such as large size, complex structure, and difficult maintenance.

[0006] Therefore, there is a great need for an electron accelerator that can overcome the shortcomings of existing technologies, is small in size, occupies little space, requires little factory space, has a simple structure, low manufacturing cost, is safer, and is easy to move, transport and install. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of the existing electron accelerators which use gas insulation, resulting in large size, complex structure, difficult maintenance and poor heat dissipation. The present invention provides an electron accelerator and its composite insulation device that are small in size, simple in structure, easy to maintain, safe and reliable, and can significantly improve the insulation and heat dissipation efficiency of the accelerator and ensure the stable operation of the accelerator.

[0008] The present invention solves the above-mentioned technical problems through the following technical solution:

[0009] A composite insulation device for an electron accelerator is disclosed, characterized in that the electron accelerator includes an outer shell, a base, an accelerating tube, and a high-voltage support; the outer shell is disposed outside the high-voltage support; and the composite insulation device includes a solid-state insulation device and a liquid-cooled heat dissipation device.

[0010] The solid insulation device includes a solid insulation cylinder and an insulating top cover. The solid insulation cylinder is disposed between the outer shell and the high-voltage support. The top of the solid insulation cylinder is fixed to the insulating top cover. The solid insulation cylinder includes several layers of insulating film. The insulating top cover is disposed above the high-voltage support.

[0011] The liquid cooling heat dissipation device includes a liquid inlet, a liquid outlet, and an insulating liquid, which flows through the outside of the solid insulating cylinder, the high-voltage support, and the acceleration tube.

[0012] Preferably, the liquid inlet is divided into a first pipeline and a second pipeline inside the outer shell. The first pipeline is connected to the top of the outer shell, and the second pipeline is connected to the high-pressure cap at the top of the high-pressure support.

[0013] Preferably, both the inlet and outlet are located on the base, the first pipe connects to the top of the outer shell through the gap between the solid insulating cylinder and the outer shell, and the second pipe connects to the bottom of the first pipe and connects to the high-pressure cap through the gap between the high-pressure bracket and the acceleration tube.

[0014] Preferably, the composite insulation device further includes an internal liquid inlet cover and an external liquid inlet cover, the internal liquid inlet cover being located on the top of the high-voltage cap and the external liquid inlet cover being located on the top of the outer shell.

[0015] Preferably, both the inner and outer liquid inlet caps are provided with a liquid inlet and several liquid outlets. A first pipeline is connected from below to the liquid inlet of the outer liquid inlet cap, and a second pipeline is connected from below to the liquid inlet of the inner liquid inlet cap.

[0016] Preferably, the insulating liquid flows from the inner inlet cover through the gap between the high-voltage support and the acceleration tube, and the insulating liquid flows from the outer inlet cover through the gap between the solid insulating cylinder and the outer shell.

[0017] Preferably, the composite insulation device further includes a cooling system, which includes an oil pump, a coolant tank, and a radiator, with the inlet and outlet connected to the cooling system.

[0018] Preferably, the outer shell, the acceleration tube, and the high-voltage support are all mounted on the base, the high-voltage support is located outside the acceleration tube, and the top of the solid insulating cylinder is fixed to the insulating top cover.

[0019] Preferably, the electron accelerator includes a high-voltage cap, an insulating top cover is fixed to the high-voltage cap using insulating sealant, a solid insulating cylinder is higher than the high-voltage cap, an mounting protrusion is provided below the insulating top cover, the shape of the lower surface of the mounting protrusion matches the shape of the upper surface of the high-voltage cap, the insulating top cover includes a fixing member mounting groove, and the solid insulating cylinder is installed in the fixing member mounting groove.

[0020] The present invention also provides an electron accelerator, characterized in that the electron accelerator includes the composite insulation device described above.

[0021] The present invention also provides an assembly method for an electron accelerator, the assembly method being used to assemble the electron accelerator as described above, the assembly method comprising:

[0022] The accelerator tube and the high-voltage bracket are mounted on the base;

[0023] The first pipeline for conveying the insulating liquid is connected to the internal liquid inlet cap of the high-pressure support;

[0024] The solid insulating cylinder is sleeved on the outside of the high-voltage support;

[0025] Install the insulating top cover onto the high-voltage cap at the top of the high-voltage bracket;

[0026] Fix the solid insulating cylinder to the insulating top cover;

[0027] Connect the second pipeline for conveying the insulating liquid to the external liquid inlet cover at the top of the outer casing;

[0028] The outer shell is fitted over the outside of the solid insulating cylinder;

[0029] Insulating liquid is injected into the outer shell using the first and second pipelines;

[0030] Determine whether the insulating liquid has filled the outer shell. If so, start the oil pump of the cooling system to circulate the insulating liquid to the electron accelerator.

[0031] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0032] The positive and progressive effects of this invention are as follows:

[0033] This application achieves solid-state insulation, which has the advantages of small size, simple structure, convenient maintenance, and safety and reliability. At the same time, it uses high-performance liquid materials for insulation and heat dissipation, which can significantly improve the insulation and heat dissipation efficiency of the accelerator and ensure the stable operation of the accelerator.

[0034] High-performance plastic film material is used as the main insulation layer, which has excellent insulation performance and mechanical strength. It can effectively isolate the high-voltage electric field between the high-voltage support and the shell and prevent electrical breakdown.

[0035] By using high-performance liquid materials for insulation and heat dissipation, the insulation and heat dissipation efficiency of the accelerator can be significantly improved, ensuring the stable operation of the accelerator.

[0036] This composite insulation solution does not require the use of toxic or harmful gaseous materials, making it environmentally friendly and compliant with environmental protection requirements.

[0037] This composite insulation solution has a simple structure, is easy to implement and maintain, and has significantly reduced costs and size, making it promising for widespread application and promotion. Attached Figure Description

[0038] Figure 1 is a schematic diagram of the structure of the electron accelerator of Embodiment 1 of the present invention.

[0039] Figure 2 is another structural schematic diagram of the electron accelerator of Embodiment 1 of the present invention.

[0040] Figure 3 is another structural schematic diagram of the electron accelerator of Embodiment 1 of the present invention.

[0041] Figure 4 is a schematic diagram of the solid insulation device according to Embodiment 1 of the present invention.

[0042] Figure 5 is a schematic diagram of the solid insulating cylinder of Embodiment 1 of the present invention.

[0043] Figure 6 is another structural schematic diagram of the solid insulating cylinder of Embodiment 1 of the present invention.

[0044] Figure 7 is a schematic diagram of the structure of the insulating top cover of Embodiment 1 of the present invention.

[0045] Figure 8 is a schematic diagram of the external liquid inlet cover of Embodiment 1 of the present invention. Detailed Implementation

[0046] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0047] Example 1

[0048] In this embodiment, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Referring to Figures 1 to 8, this embodiment provides an electron accelerator, which includes an outer shell 100, a base 101, an acceleration tube 102, a high-voltage support 103, and a composite insulation device.

[0050] The composite insulation device includes a solid insulation device 104 and a liquid cooling heat dissipation device.

[0051] The outer shell 100, the acceleration tube 102, and the high-pressure bracket 103 are all mounted on the base 101.

[0052] The high-pressure support 103 is located on the outside of the acceleration tube 102.

[0053] The outer shell 100 is located on the outside of the high-pressure support 103.

[0054] The solid insulation device 104 includes a solid insulation cylinder 1041 and an insulation top cover 1042.

[0055] The liquid cooling heat dissipation device includes an inlet 200, an outlet 201, and an insulating liquid 202, which flows through the outside of the solid insulating cylinder, the high-voltage support, and the acceleration tube.

[0056] In this embodiment, the insulating liquid fills the cavity formed by the outer shell and the base, and flows through the gap between the solid insulating cylinder, the high-voltage support, and the acceleration tube.

[0057] In this embodiment, the insulating liquid is silicone oil. Silicone oil has excellent fluidity and excellent insulation properties, with a breakdown voltage of over 20 kilovolts.

[0058] The liquid inlet is divided into a first pipe 203 and a second pipe 204 inside the outer shell. The first pipe is connected to the top of the outer shell, and the second pipe is connected to the high-pressure cap at the top of the high-pressure support.

[0059] Both the liquid inlet and the liquid outlet are located on the base.

[0060] The first conduit connects from the base to the top of the outer casing through the gap between the solid insulating cylinder and the outer casing.

[0061] The second pipeline connects to the bottom of the first pipeline and connects to the high-pressure cap along the gap between the high-pressure support and the acceleration tube.

[0062] The composite insulation device also includes an internal liquid inlet cover 205 and an external liquid inlet cover 206.

[0063] The inner liquid inlet cover is horizontally positioned on top of the high-pressure cap, and the outer liquid inlet cover is horizontally positioned on top of the outer shell.

[0064] Both the internal liquid inlet cover and the external liquid inlet cover 206 are provided with a liquid inlet 207 and several liquid outlets 208.

[0065] The first pipe is connected from below to the inlet of the external liquid inlet cover, and the second pipe is connected from below to the inlet of the internal liquid inlet cover.

[0066] The insulating liquid flows from the inner inlet cover through the gap between the high-voltage support and the acceleration tube, and the insulating liquid flows from the outer inlet cover through the gap between the solid insulating cylinder and the outer shell.

[0067] The solid insulating cylinder 1041 is disposed in the gap between the outer shell cylinder 100 and the high-voltage support 103.

[0068] The top of the solid insulating cylinder 1041 is fixed to the insulating top cover 1042.

[0069] The solid insulating cylinder includes several layers of insulating film 1043, and the height of the insulating film is greater than the height of the high voltage support.

[0070] In this embodiment, the solid insulating cylinder includes a supporting fixed cylinder, which can be made of diamond, quartz, injection molded material, or ceramic. The insulating film is wound onto the fixed cylinder to form the solid insulating cylinder.

[0071] The insulating top cover is located above the high-voltage support.

[0072] The outer shell is used to define a chamber, specifically for housing and supporting other components of the accelerator.

[0073] Accelerator tube and high-voltage support: Located within the outer shell cavity and connected to the base. The accelerator tube and the shell together define a vacuum space. The high-voltage support is located outside the accelerator tube and is used to generate and amplify the voltage required for acceleration.

[0074] The electron accelerator includes a high-voltage cap 105, and the insulating top cover is fixed to the high-voltage cap using insulating sealant.

[0075] The solid insulating cylinder 1041 is higher than the high voltage cap 105, and an installation protrusion 1044 is provided below the insulating top cover 1042. The shape of the lower surface of the installation protrusion 1044 matches the shape of the upper surface of the high voltage cap.

[0076] The solid insulation cylinder and the insulating top cover of the solid insulation device form an insulating cavity, and the acceleration tube, high voltage support and high voltage cap are located inside the insulating cavity.

[0077] An insulating top cover is placed on the solid insulating cylinder. To further secure the connection between the components, the insulating top cover is fixed to the high-voltage cap using insulating sealant. The solid insulating cylinder is placed between the base and the insulating top cover.

[0078] The insulating top cover includes a fixing mounting groove 1045, and the solid insulating cylinder is installed in the fixing mounting groove 1045.

[0079] The solid insulating cylinder and insulating top cover with the above structure can serve as a device to fix the solid insulating device, making the solid insulating device more stable and reliable.

[0080] As shown in Figure 6, in this embodiment, the solid insulating cylinder 1041 includes an inner insulating cylinder 1046. In this embodiment, only the inner insulating cylinder is needed for fixing.

[0081] In other embodiments, referring to FIG5, the solid insulating cylinder 1041 includes an inner insulating cylinder 1046 and an outer insulating cylinder 1047, the insulating film is wrapped around the outer surface of the inner insulating cylinder, and the outer insulating cylinder is disposed on the outside of the insulating film.

[0082] The inner and outer insulating cylinders serve both a fixing function and a certain degree of insulation. By adjusting the height of the inner and outer insulating cylinders, they can be adapted to the internal structure of the electron accelerator, facilitating installation and production.

[0083] The insulating film is a polyimide film, and the thickness of a single layer of the insulating film is 0.025 mm to 0.05 mm. The total number of layers of the insulating film is 600 to 2200. In this embodiment, the total number of layers of the insulating film is preferably 1800.

[0084] The insulating film is made of solid insulating material, especially polyimide (PI) film. In other embodiments, the insulating film may also be other high-performance films such as ultra-high molecular weight polyethylene film.

[0085] The insulating top cover is made of polytetrafluoroethylene.

[0086] The inner and outer insulating cylinders are made of diamond, quartz, injection molding, or ceramic.

[0087] The electron accelerator includes a high-frequency electrode, which is disposed between the solid insulating cylinder and the outer shell.

[0088] An insulating sealant is provided in the gap between the accelerating tube and the outer shell. The insulating sealant is an organosilicon potting compound, which has excellent high temperature resistance, voltage resistance, and insulation properties.

[0089] The electron accelerator with solid-state insulation in this embodiment uses PI thin film winding technology to achieve solid-state insulation, which overcomes the problems of large size, complex structure and difficult maintenance caused by the use of high-pressure insulating gas in traditional electron accelerators. It has the advantages of small size, simple structure, convenient maintenance and safety and reliability.

[0090] Meanwhile, the excellent properties of the PI film ensure the stable operation and long lifespan of the accelerator. The solid-state insulated electron accelerator of this embodiment has broad application prospects in radiation processing, medicine, scientific research, and other fields.

[0091] The composite insulation device also includes a cooling system 209, which includes an oil pump, a coolant tank, and a radiator. The inlet and outlet are connected to the cooling system.

[0092] This embodiment achieves solid-state insulation, which has the advantages of small size, simple structure, convenient maintenance, and safety and reliability. At the same time, it uses high-performance liquid materials for insulation and heat dissipation, which can significantly improve the insulation and heat dissipation efficiency of the accelerator and ensure the stable operation of the accelerator.

[0093] This embodiment also provides an assembly method for an electron accelerator, the assembly method being used to assemble the electron accelerator described above, the assembly method comprising:

[0094] The accelerator tube and the high-voltage bracket are mounted on the base;

[0095] The first pipeline for conveying the insulating liquid is connected to the internal liquid inlet cap of the high-pressure support;

[0096] The solid insulating cylinder is sleeved on the outside of the high-voltage support;

[0097] Install the insulating top cover onto the high-voltage cap at the top of the high-voltage bracket;

[0098] Fix the solid insulating cylinder to the insulating top cover;

[0099] Connect the second pipeline for conveying the insulating liquid to the external liquid inlet cover at the top of the outer casing;

[0100] The outer shell is fitted over the outside of the solid insulating cylinder;

[0101] Insulating liquid is injected into the outer shell using the first and second pipelines;

[0102] Determine whether the insulating liquid has filled the outer shell. If so, start the oil pump of the cooling system to circulate the insulating liquid to the electron accelerator.

[0103] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A composite insulation device for an electron accelerator, characterized in that, The electron accelerator includes an outer shell, a base, an accelerating tube, and a high-voltage support. The outer shell is located outside the high-voltage support. The composite insulation device includes a solid-state insulation device and a liquid-cooled heat dissipation device. The solid insulation device includes a solid insulation cylinder and an insulating top cover. The solid insulation cylinder is disposed between the outer shell and the high-voltage support. The top of the solid insulation cylinder is fixed to the insulating top cover. The solid insulation cylinder includes several layers of insulating film. The insulating top cover is disposed above the high-voltage support. The liquid cooling heat dissipation device includes a liquid inlet, a liquid outlet, and an insulating liquid, which flows through the outside of the solid insulating cylinder, the high-voltage support, and the acceleration tube.

2. The composite insulation device as described in claim 1, characterized in that, The liquid inlet is divided into a first pipe and a second pipe inside the outer shell. The first pipe is connected to the top of the outer shell, and the second pipe is connected to the high-pressure cap at the top of the high-pressure support.

3. The composite insulation device as described in claim 2, characterized in that, Both the inlet and outlet are located on the base. The first pipe connects to the top of the outer shell through the gap between the solid insulating cylinder and the outer shell. The second pipe connects to the bottom of the first pipe and connects to the high-pressure cap through the gap between the high-pressure bracket and the acceleration tube.

4. The composite insulation device as described in claim 2, characterized in that, The composite insulation device further includes an internal liquid inlet cover and an external liquid inlet cover. The internal liquid inlet cover is located on the top of the high-voltage cap, and the external liquid inlet cover is located on the top of the outer shell.

5. The composite insulation device as described in claim 4, characterized in that, Both the inner and outer liquid inlet caps have a liquid inlet and several liquid outlets. A first pipe is connected from below to the liquid inlet of the outer liquid inlet cap, and a second pipe is connected from below to the liquid inlet of the inner liquid inlet cap.

6. The composite insulation device as described in claim 5, characterized in that, The insulating liquid flows from the inner inlet cover through the gap between the high-voltage support and the acceleration tube, and the insulating liquid flows from the outer inlet cover through the gap between the solid insulating cylinder and the outer shell.

7. The composite insulation device as described in claim 1, characterized in that, The composite insulation device also includes a cooling system, which includes an oil pump, a coolant tank, and a radiator, with the inlet and outlet connected to the cooling system.

8. The composite insulation device as described in claim 1, characterized in that, The outer shell, the accelerating tube, and the high-voltage support are all mounted on the base. The high-voltage support is located on the outside of the accelerating tube, and the top of the solid insulating cylinder is fixed to the insulating top cover. The electron accelerator includes a high-voltage cap, an insulating top cover is fixed to the high-voltage cap with insulating sealant, a solid insulating cylinder is higher than the high-voltage cap, an mounting protrusion is provided below the insulating top cover, the shape of the lower surface of the mounting protrusion matches the shape of the upper surface of the high-voltage cap, the insulating top cover includes a fixing component mounting groove, and the solid insulating cylinder is installed in the fixing component mounting groove.

9. An electron accelerator, characterized in that, The electron accelerator includes the composite insulation device as described in any one of claims 1 to 8.

10. A method for assembling an electron accelerator, characterized in that, The assembly method is used to assemble the electron accelerator as described in claim 9, and the assembly method includes: The accelerator tube and the high-voltage bracket are mounted on the base; The first pipeline for conveying the insulating liquid is connected to the internal liquid inlet cap of the high-pressure support; The solid insulating cylinder is sleeved on the outside of the high-voltage support; Install the insulating top cover onto the high-voltage cap at the top of the high-voltage bracket; Fix the solid insulating cylinder to the insulating top cover; Connect the second pipeline for conveying the insulating liquid to the external liquid inlet cover at the top of the outer casing; The outer shell is fitted over the outside of the solid insulating cylinder; Insulating liquid is injected into the outer shell using the first and second pipelines; Determine if the insulating liquid has filled the outer casing; if so, turn on the oil pump of the cooling system.

Images