Electron accelerator and composite insulation device thereof

Abstract

The utility model discloses an electron accelerator and a composite insulation device thereof, the electron accelerator comprises a shell cylinder, a base, an accelerating tube and a high-voltage support, the shell cylinder is arranged at the outer side of the high-voltage support, and the composite insulation device comprises a solid insulation device and a liquid cooling heat dissipation device. The solid-state insulation device comprises a solid-state insulation cylinder and an insulation top cover, the solid-state insulation cylinder is arranged between the shell cylinder and the high-voltage support, the top of the solid-state insulation cylinder is fixed with the insulation top cover, the solid-state insulation cylinder comprises an insulation film, and the insulation top cover is arranged above the high-voltage support; the liquid cooling heat dissipation device comprises a liquid inlet, a liquid outlet and insulating liquid, and the insulating liquid flows through the solid insulating cylinder, the high-voltage support and the outer side of the accelerating tube. Solid insulation is achieved, the accelerator has the advantages of being small in size, simple in structure, convenient to maintain, safe and reliable, meanwhile, high-performance liquid materials are adopted for insulation and heat dissipation, the insulation and heat dissipation efficiency of the accelerator can be remarkably improved, and stable operation of the accelerator is guaranteed.

Description

Technical Field

[0001] The utility model relates to an electron accelerator and a composite insulating device thereof. Background Art

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

[0003] However, the insulation performance of high-voltage insulating gas is limited and often results in bulky equipment. At the same time, among non-CO2 greenhouse gases, sulfur hexafluoride (SF6) has the strongest greenhouse effect and is listed as one of the six greenhouse gases with restricted use.

[0004] The greenhouse effect potential of SF6 is 23,500 times that of CO2, and its lifespan in the atmosphere is about 3,200 years. This means that the impact of 1 kg of SF6 leaking into the atmosphere on global warming is equivalent to about 23.5 tons of carbon dioxide, and it can be considered that it will remain in the atmosphere forever and cannot be degraded, causing great harm to the environment.

[0005] Electron accelerators based on high-voltage insulating gas have the disadvantages of being bulky, complex in structure, and difficult to maintain.

[0006] Therefore, there is a great need for an electron accelerator that can overcome the defects of the existing technology, has a small size, occupies a small area, has low requirements for factory space, has a simple structure, has low manufacturing cost, is safer, and is easy to move, transport and install. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the defects of the electron accelerator in the prior art that adopts gas insulation, has a large volume, a complex structure, is difficult to maintain and has a poor heat dissipation effect, and to provide an electron accelerator and a composite insulation device which have small volume, simple structure, convenient maintenance, safety and reliability, and can significantly improve the insulation and heat dissipation efficiency of the accelerator and ensure the stable operation of the accelerator.

[0008] The utility model solves the above technical problems through the following technical solutions:

[0009] A composite insulation device is used for an electron accelerator, wherein the electron accelerator comprises an outer shell cylinder, a base, an accelerating tube and a high-voltage bracket, wherein the outer shell cylinder is arranged outside the high-voltage bracket, and the composite insulation device comprises a solid insulation device and a liquid cooling device.

[0010] The solid-state insulation device comprises a solid-state insulation cylinder and an insulation top cover, wherein the solid-state insulation cylinder is arranged between the outer shell cylinder and the high-voltage support, the top of the solid-state insulation cylinder is fixed to the insulation top cover, the solid-state insulation cylinder comprises several layers of insulation film, and the insulation top cover is arranged above the high-voltage support;

[0011] The liquid cooling device comprises a liquid inlet, a liquid outlet and an insulating liquid, and the insulating liquid flows through the outer side of the solid insulating tube, the high voltage bracket and the accelerating tube.

[0012] Preferably, the liquid inlet is divided into a first pipeline and a second pipeline in the outer shell cylinder, the first pipeline is connected to the top of the outer shell cylinder, and the second pipeline is connected to the high-voltage cap on the top of the high-voltage support.

[0013] Preferably, the liquid inlet and the liquid outlet are both arranged on the base, the first pipeline is connected from the base to the top of the outer shell cylinder along the gap between the solid insulating cylinder and the outer shell cylinder, and the second pipeline is connected to the bottom of the first pipeline and connected to the high-voltage cap along the gap between the high-voltage bracket and the accelerating tube.

[0014] Preferably, the composite insulation device further comprises an internal liquid inlet cover and an external liquid inlet cover, wherein the internal liquid inlet cover is arranged on the top of the high-voltage cap, and the external liquid inlet cover is arranged on the top of the outer shell cylinder.

[0015] Preferably, both the internal liquid inlet cover and the external liquid inlet cover are provided with a liquid inlet and a plurality of liquid outlets, the first pipeline is connected to the liquid inlet of the external liquid inlet cover from below, and the second pipeline is connected to the liquid inlet of the internal liquid inlet cover from below.

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

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

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

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

[0020] The utility model also provides an electron accelerator, which is characterized in that the electron accelerator comprises the composite insulation device as described above.

[0021] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.

[0022] The positive and progressive effects of the utility model are:

[0023] The present application realizes solid-state insulation, which has the advantages of small size, simple structure, easy maintenance, safety and reliability. At the same time, it adopts 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.

[0024] High-performance plastic film material is used as the main insulating layer, which has excellent insulation performance and mechanical strength, and can effectively isolate the high-voltage electric field between the high-voltage support and the casing to prevent electrical breakdown.

[0025] 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.

[0026] This composite insulation solution does not require the use of toxic and harmful gas materials, is environmentally friendly, and meets environmental protection requirements.

[0027] This composite insulation solution has a simple structure, is easy to implement and has greatly reduced maintenance costs, a greatly reduced size, and has broad application prospects and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the electron accelerator of Example 1 of the utility model.

[0029] Figure 2 This is another structural schematic diagram of the electron accelerator of Example 1 of the utility model.

[0030] Figure 3 This is another structural schematic diagram of the electron accelerator of Example 1 of the utility model.

[0031] Figure 4 This is a schematic structural diagram of the solid-state insulation device of Example 1 of the utility model.

[0032] Figure 5 This is a schematic structural diagram of a solid insulating tube according to Embodiment 1 of the present utility model.

[0033] Figure 6 This is another structural schematic diagram of the solid insulating tube of Example 1 of the utility model.

[0034] Figure 7 This is a schematic structural diagram of the insulating top cover of Example 1 of the utility model.

[0035] Figure 8 This is a schematic structural diagram of the external liquid inlet cover of Example 1 of the utility model. DETAILED DESCRIPTION

[0036] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0037] Example 1

[0038] In this embodiment, the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] See also Figures 1 to 8 This embodiment provides an electron accelerator, which includes a shell cylinder 100, a base 101, an accelerating tube 102, a high-voltage bracket 103 and a composite insulating device.

[0040] The composite insulation device comprises a solid insulation device 104 and a liquid cooling device.

[0041] The outer shell 100 , the accelerating tube 102 and the high-voltage bracket 103 are all arranged on the base 101 .

[0042] The high-voltage support 103 is disposed outside the accelerating tube 102 .

[0043] The outer shell cylinder 100 is disposed outside the high-voltage support 103 .

[0044] The solid-state insulating device 104 includes a solid-state insulating tube 1041 and an insulating top cover 1042 .

[0045] The liquid cooling device comprises a liquid inlet 200, a liquid outlet 201 and an insulating liquid 202. The insulating liquid 202 flows through the solid insulating tube, the high voltage support and the outer side of the accelerating tube.

[0046] In this embodiment, the insulating liquid fills the cavity formed by the outer shell cylinder and the base, and flows through the gaps between the solid insulating cylinder, the high-voltage bracket and the accelerating tube.

[0047] In this embodiment, the insulating liquid is silicone oil, which has excellent fluidity and insulation performance, and a breakdown voltage of more than 20 kilovolts.

[0048] The liquid inlet is divided into a first pipeline 203 and a second pipeline 204 in the outer shell cylinder, the first pipeline is connected to the top of the outer shell cylinder, and the second pipeline is connected to the high-voltage cap on the top of the high-voltage support.

[0049] The liquid inlet and the liquid outlet are both arranged on the base.

[0050] The first pipeline is connected from the base to the top of the outer shell cylinder along the gap between the solid insulation cylinder and the outer shell cylinder.

[0051] The second pipeline is connected to the bottom of the first pipeline and is connected to the high-voltage cap along the gap between the high-voltage support and the accelerating tube.

[0052] The composite insulation device further includes an inner liquid inlet cover 205 and an outer liquid inlet cover 206 .

[0053] The internal liquid inlet cover is horizontally arranged on the top of the high-pressure cap, and the external liquid inlet cover is horizontally arranged on the top of the outer shell cylinder.

[0054] The inner liquid inlet cover and the outer liquid inlet cover 206 are each provided with a liquid inlet 207 and a plurality of liquid outlets 208 .

[0055] The first pipeline is connected to the liquid inlet of the external liquid inlet cover from below, and the second pipeline is connected to the liquid inlet of the internal liquid inlet cover from below.

[0056] The insulating liquid flows from the inner liquid inlet cover through the gap between the high-voltage support and the accelerating tube, and the insulating liquid flows from the outer liquid inlet cover through the gap between the solid insulating cylinder and the outer shell cylinder.

[0057] The solid insulating cylinder 1041 is disposed in the gap between the outer shell cylinder 100 and the high-voltage support 103 .

[0058] The top of the solid insulating cylinder 1041 is fixed to the insulating top cover 1042 .

[0059] The solid insulating cylinder includes several layers of insulating films 1043, and the height of the insulating films is greater than the height of the high-voltage support.

[0060] In this embodiment, the solid insulating cylinder includes a fixing cylinder for supporting, and the fixing cylinder can be diamond, quartz, injection molding or ceramic. The insulating film is wound onto the fixing cylinder to form the solid insulating cylinder.

[0061] The insulating top cover is arranged above the high-voltage support.

[0062] The outer shell cylinder is used to define a chamber, specifically used to accommodate and support other components of the accelerator.

[0063] Accelerator tube and high-voltage bracket: arranged in the cavity of the outer shell cylinder and connected to the base. The accelerator tube and the cylinder together define a vacuum space, and the high-voltage bracket is arranged outside the accelerator tube to generate and amplify the voltage required for acceleration.

[0064] The electron accelerator comprises a high voltage cap 105, and the insulating top cover is fixed to the high voltage cap by using insulating sealant.

[0065] The solid insulating tube 1041 is higher than the high-voltage cap 105 , and a mounting protrusion 1044 is provided below the insulating top cover 1042 . The lower surface shape of the mounting protrusion 1044 matches the upper surface shape of the high-voltage cap.

[0066] The solid insulating tube and the insulating top cover of the solid insulating device form an insulating cavity, and the accelerating tube, the high-voltage bracket and the high-voltage cap are arranged inside the insulating cavity.

[0067] The insulating top cover is arranged on the solid insulating cylinder. In order to further tighten the connection between the components, the insulating top cover is fixed to the high-voltage cap by insulating sealant. The solid insulating cylinder is arranged between the base and the insulating top cover.

[0068] The insulating top cover includes a fixing member installation groove 1045 , and the solid insulating cylinder is installed in the fixing member installation groove 1045 .

[0069] The solid insulating cylinder and insulating top cover of the above structure can serve as a device for fixing the solid insulating device, making the solid insulating device more stable and reliable.

[0070] like Figure 6 In this embodiment, the solid insulating tube 1041 includes an inner insulating tube 1046. In this embodiment, only the inner insulating tube is required to play a fixing role.

[0071] In other embodiments, see Figure 5The solid insulating tube 1041 includes an inner insulating tube 1046 and an outer insulating tube 1047, the insulating film is wound on the outer surface of the inner insulating tube, and the outer insulating tube is arranged on the outer side of the insulating film.

[0072] The inner insulating tube and the outer insulating tube can play a fixing role and also have a certain insulating function. By adjusting the height of the inner insulating tube and the outer insulating tube, the internal structure of the electron accelerator can be adapted to facilitate installation and production.

[0073] The insulating film is a polyimide film, the thickness of a single insulating film is 0.025 mm to 0.05 mm, the total number of layers of the insulating film is 600 to 2200 layers, and in this embodiment, the total number of layers of the insulating film is preferably 1800 layers.

[0074] The insulating film is made of solid insulating material, in particular, a polyimide (PI) film. In other embodiments, the insulating film may also be other high-performance films such as an ultra-high molecular weight polyethylene film.

[0075] The insulating top cover is made of polytetrafluoroethylene.

[0076] The inner insulating tube and the outer insulating tube are made of diamond, quartz, injection molding or ceramic.

[0077] The electron accelerator comprises a high-frequency electrode, which is arranged between the solid insulating cylinder and the outer shell cylinder.

[0078] Insulating sealant is arranged in the gap between the accelerating tube and the outer shell cylinder. The insulating sealant adopts organic silicon potting glue and has excellent high temperature resistance, voltage resistance and insulation performance.

[0079] The electron accelerator with a solid-state insulation device in this embodiment adopts PI film winding technology to achieve solid-state insulation, overcoming the problems of large size, complex structure, and difficult maintenance caused by the use of high-voltage insulating gas in traditional electron accelerators. It has the advantages of small size, simple structure, easy maintenance, safety and reliability.

[0080] At the same time, the excellent performance of the PI film ensures the stable operation and long life of the accelerator. The solid-state insulated electron accelerator of this embodiment has broad application prospects in the fields of radiation processing, medical treatment, scientific research, etc.

[0081] The composite insulation device further includes a cooling system 209, which includes an oil pump, a coolant tank and a radiator. The liquid inlet and the liquid outlet are connected to the cooling system.

[0082] This embodiment realizes solid-state insulation, and has the advantages of small size, simple structure, convenient maintenance, safety and reliability. At the same time, it adopts 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.

[0083] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. A composite insulating device for an electron accelerator, characterized in that: The electron accelerator comprises a shell cylinder, a base, an accelerating tube and a high-voltage bracket, wherein the shell cylinder is arranged outside the high-voltage bracket, and the composite insulation device comprises a solid insulation device and a liquid cooling device. The solid-state insulation device comprises a solid-state insulation cylinder and an insulation top cover, wherein the solid-state insulation cylinder is arranged between the outer shell cylinder and the high-voltage support, the top of the solid-state insulation cylinder is fixed to the insulation top cover, the solid-state insulation cylinder comprises several layers of insulation film, and the insulation top cover is arranged above the high-voltage support; The liquid cooling device comprises a liquid inlet, a liquid outlet and an insulating liquid, and the insulating liquid flows through the outer side of the solid insulating tube, the high voltage bracket and the accelerating tube.

2. The composite insulation device according to claim 1, characterized in that: The liquid inlet is divided into a first pipeline and a second pipeline in the outer shell cylinder, the first pipeline is connected to the top of the outer shell cylinder, and the second pipeline is connected to the high-voltage cap on the top of the high-voltage support.

3. The composite insulation device according to claim 2, characterized in that: The liquid inlet and the liquid outlet are both arranged on the base, the first pipeline is connected from the base to the top of the outer shell cylinder along the gap between the solid insulating cylinder and the outer shell cylinder, and the second pipeline is connected to the bottom of the first pipeline and is connected to the high-voltage cap along the gap between the high-voltage bracket and the accelerating tube.

4. The composite insulation device according to claim 2, characterized in that: The composite insulation device further comprises an internal liquid inlet cover and an external liquid inlet cover, wherein the internal liquid inlet cover is arranged on the top of the high-voltage cap, and the external liquid inlet cover is arranged on the top of the outer shell cylinder.

5. The composite insulation device according to claim 4, characterized in that: The internal liquid inlet cover and the external liquid inlet cover are each provided with a liquid inlet and a plurality of liquid outlets. The first pipeline is connected to the liquid inlet of the external liquid inlet cover from below, and the second pipeline is connected to the liquid inlet of the internal liquid inlet cover from below.

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

7. The composite insulation device according to claim 1, characterized in that: The composite insulation device further comprises a cooling system, which comprises an oil pump, a coolant tank and a radiator, and the liquid inlet and the liquid outlet are connected to the cooling system.

8. The composite insulation device according to claim 1, characterized in that: The outer shell cylinder, the accelerating tube and the high-voltage bracket are all arranged on the base, the high-voltage bracket is arranged on the outside of the accelerating tube, and the top of the solid insulating cylinder is fixed to the insulating top cover.

9. The composite insulation device according to claim 8, characterized in that: The electron accelerator includes a high-voltage cap, the insulating top cover is fixed to the high-voltage cap by using insulating sealant, the solid insulating tube is higher than the high-voltage cap, a mounting protrusion is provided below the insulating top cover, the lower surface shape of the mounting protrusion matches the upper surface shape of the high-voltage cap, the insulating top cover includes a fixing installation groove, and the solid insulating tube is installed in the fixing installation groove.

10. An electron accelerator, characterized in that: The electron accelerator comprises the composite insulation device according to any one of claims 1 to 9.

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