High-voltage protection device for particle accelerator

Abstract

The invention provides a high-voltage protection device for a particle accelerator, which is supported between a wire harness pipeline and an outer protection pipe of the particle accelerator and is used for connecting two adjacent wire harness pipelines in the axial direction, and the high-voltage protection device is symmetrically distributed relative to the splicing position of the two adjacent wire harness pipelines. Comprising at least two insulation sleeves, a first supporting ring and a second supporting ring which are coaxially distributed, the insulation sleeves are of a circular tube shape, the at least two insulation sleeves are arranged at intervals in the radial direction of the outer protection tube, and the insulation sleeve close to the outer protection tube is matched with the outer protection tube in an inserted mode so as to be connected with the two adjacent outer protection tubes in the axial direction; the first supporting rings are arranged between two adjacent insulating sleeves in a supporting manner; the second supporting ring is connected to the joint of every two adjacent wire harness pipelines in a sleeving mode, and the second supporting rings are arranged between the wire harness pipelines and the insulating sleeves close to the wire harness pipelines in a supporting mode. The symmetrical design of the high-voltage protection device can ensure the stability of a high-voltage electric field and improve the insulation protection effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of particle accelerator equipment, in particular to a high-voltage protection device for a particle accelerator. BACKGROUND

[0002] The total length of the particle accelerator beam tube is 10m, and since each electrode in the internal beam is suspended at a high voltage of 450kV, a metal tube is used to achieve uniform electric field. Considering the high voltage level and the need for ground insulation, the entire beam tube is suspended in an insulation cavity for transmission. In the design, two 5m tubes are spliced together. However, due to the size and length of the tube, the overall tube is relatively heavy, and the splicing method is prone to deformation at the splicing position, causing the two tube sections to be eccentric. This can interfere with the operation of the particle accelerator. The deformation also affects the insulation distance of the beam tube to the insulation cavity, which can compromise the safety performance of the entire system.

[0003] Therefore, there is a need to provide a high-voltage protection device for a particle accelerator to at least partially solve the above problems. SUMMARY

[0004] A series of simplified concepts are introduced in the summary section, which will be further described in detail in the detailed description section. The summary section of the present application does not mean to attempt to limit the key features and essential technical features of the claimed technical solutions, nor to determine the protection scope of the claimed technical solutions.

[0005] To at least partially solve the above problems, the present application provides a high-voltage protection device for a particle accelerator, which is supported between a beam tube and an outer protection tube of the particle accelerator, and is used to connect two adjacent sections of the beam tube in the axial direction. The high-voltage protection device is symmetrically distributed relative to the splicing position of the two adjacent sections of the beam tube, and the high-voltage protection device comprises:

[0006] At least two insulation sleeves, the insulation sleeves are configured in a circular tube shape, the at least two insulation sleeves are coaxially distributed and are spaced apart along the radial direction of the outer protection tube, and the insulation sleeve close to the outer protection tube is inserted and matched with the outer protection tube to connect two adjacent sections of the outer protection tube in the axial direction;

[0007] A first support ring is supported between the two adjacent insulation sleeves; and

[0008] A second support ring is sleeved at the connection of the two adjacent sections of the beam tube, the second support ring is coaxially arranged with the beam tube, and is supported between the beam tube and the insulation sleeve close to the beam tube.

[0009] According to the scheme, the symmetrical design of the high-voltage protection device can ensure the stability of the high-voltage electric field and improve the insulation protection effect. The two adjacent wire harness pipe channels are fixed by the second support ring, the two adjacent outer protection pipes are fixed by the insulation sleeve, and the wire harness pipe channel and the outer protection pipe are fixed and supported by the insulation sleeve and the first support ring. While achieving high-voltage insulation protection, the coaxiality of the wire harness pipe channel and the outer protection pipe is ensured.

[0010] Optionally, the lengths of the plurality of insulation sleeves are different in the radial direction of the insulation sleeve, and the length of the insulation sleeve closer to the outer protection pipe is greater.

[0011] According to the scheme, the lengths of the plurality of insulation sleeves are designed to gradually increase from the inside to the outside, which can improve the insulation protection at the splicing position of the wire harness pipe channel. The high-voltage protection device has a "pyramid" structure distribution in the radial direction. By the gradient distribution of the insulation sleeve, the creepage distance is improved, the gradient optimization of the high-voltage electric field is realized, and high-voltage discharge is avoided.

[0012] Optionally, the distance between the two adjacent insulation sleeves gradually increases from the wire harness pipe to the outer protection pipe in the radial direction.

[0013] According to the scheme, by optimizing the structure design at the low potential, the overall weight of the entire high-voltage protection device can be greatly reduced under the premise of ensuring the structural strength.

[0014] Optionally, the ratio of the length of each insulation sleeve in the axial direction to the distance of the insulation sleeve from the wire harness pipe in the radial direction is the same.

[0015] According to the scheme, a specific design of the insulation sleeve of the high-voltage protection device is provided, which can better realize the gradient optimization of the electric field.

[0016] Optionally, in the radial direction, the insulation sleeve comprises a first insulation sleeve, a second insulation sleeve and a third insulation sleeve arranged in sequence from the outer protection pipe to the wire harness pipe.

[0017] According to the scheme, three layers of insulation sleeves are designed. Those skilled in the art can flexibly select the number and size of the insulation sleeves according to actual needs.

[0018] Optionally, a pair of first support rings is arranged between the two adjacent insulation sleeves, and the pair of first support rings is symmetrical relative to the second support ring.

[0019] According to the scheme, the first support ring is arranged in pairs and symmetrically distributed, which can improve the structural strength and support stability of the high-voltage protection device, and ensure the safe and reliable connection of the outer protection pipe and the wire harness pipe.

[0020] Optionally, the first support ring has a dimension in the radial direction that is greater than a dimension of the insulating sleeve in the radial direction.

[0021] According to the present solution, the overall weight of the high-voltage protection device can be reduced.

[0022] Optionally, the first support ring is provided with at least two through holes extending in the axial direction, and the at least two through holes are distributed at equal intervals around the axis of the wire harness pipe.

[0023] According to the present solution, the through holes are uniformly arranged on the first support ring, and the overall weight of the high-voltage protection device can be further reduced without affecting the insulation effect.

[0024] Optionally, the first support ring and the second support ring are both made of polytetrafluoroethylene.

[0025] The insulating sleeve is made of DuPont paper or is a polytetrafluoroethylene insulating sleeve.

[0026] According to the present solution, the first support ring, the second support ring and the insulating sleeve can all be made of polytetrafluoroethylene, which has excellent insulation performance and is also suitable for extreme environments. When the inner diameter or length of the insulating sleeve is relatively large, the insulating sleeve can also be made of DuPont paper, which can greatly reduce the manufacturing difficulty.

[0027] Optionally, the insulating sleeve comprises a paper tube and a fixing ring, the paper tube is made of DuPont paper, and the fixing ring is clamped at both ends of the paper tube and is provided with a clamping groove matched with the paper tube.

[0028] According to the present solution, the fixing ring is installed at both ends of the paper tube to improve the overall structural strength of the insulating sleeve and prevent the paper tube from deforming. It can be understood that the fixing ring is made of an insulating material, and the material of the fixing ring can be flexibly selected by those skilled in the art.

[0029] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and achieved by means of the structures particularly pointed out in the description and the appended claims. BRIEF DESCRIPTION OF DRAWINGS

[0030] The following drawings for the embodiments of the present application are hereby incorporated into this application as part of the present application for understanding the present application. The embodiments of the present application and their description shown in the drawings are used to explain the principles of the present application. In the drawings,

[0031] Figure 1 It is a perspective view of a high-voltage protection device according to a preferred embodiment of the present application;

[0032] Figure 2 for Figure 1 A cross-sectional structural diagram of the medium- and high-voltage protection device during installation, showing only a portion of it;

[0033] Figure 3 for Figure 1 A side view of the medium- and high-voltage protection device; and

[0034] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of the medium- and high-voltage protection device along line AA.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. High-voltage protection device; 101. Wiring harness conduit; 102. Outer protective tube; 110. Insulating sleeve; 111. First insulating sleeve; 112. Second insulating sleeve; 113. Third insulating sleeve; 120. First support ring; 121. Through hole; 130. Second support ring; F. Splicing position. Detailed Implementation

[0037] In the following description, numerous specific details are set forth to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that embodiments of this application may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with embodiments of this application.

[0038] To fully understand the embodiments of this application, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may exist besides these detailed descriptions, and should not be construed as being limited to the embodiments presented herein.

[0039] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of this application. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms “upper,” “lower,” “front,” “rear,” “left,” “right,” and similar expressions used in this application are for illustrative purposes only and are not intended to be limiting.

[0040] Ordinal numbers such as “first” and “second” used in this application are merely identifiers and have no other meaning, such as a specific order. Moreover, for example, the term “first component” does not imply the existence of a “second component”, and the term “second component” does not imply the existence of a “first component”.

[0041] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0042] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0043] The specific embodiments of this application will be described in more detail below with reference to the accompanying drawings, which illustrate representative embodiments of this application and are not intended to limit this application.

[0044] like Figures 1 to 4 As shown, this application embodiment provides a high-voltage protection device 100 for a particle accelerator. (Reference) Figure 2 The high-voltage protection device 100 is supported between the wire harness pipe 101 and the outer protection pipe 102 of the particle accelerator, and is used to connect two adjacent sections of the wire harness pipe 101 in the axial direction.

[0045] like Figure 2 As shown, two adjacent sections of wire harness conduit 101 are joined together. The high-voltage protection device 100 is symmetrically distributed relative to the joint position F of the two adjacent sections of wire harness conduit 101. The high-voltage protection device 100 of this application is used to connect two adjacent sections of wire harness conduit 101 and also to support and fix the wire harness conduit 101 and the outer protective pipe 102. The symmetrical structure ensures uniform load distribution and prevents deformation at the pipe joints caused by uneven stress, thus affecting the overall safety of the equipment. Simultaneously, the symmetrical design ensures the stability of the high-voltage electric field and improves the insulation protection effect.

[0046] The high-voltage protection device 100 includes at least two insulating sleeves 110, a first support ring 120, and a second support ring 130. The insulating sleeves 110 are cylindrical, and at least two insulating sleeves 110 are coaxially distributed and spaced apart along the radial direction of the outer protective tube 102. The insulating sleeve 110 closest to the outer protective tube 102 is inserted into the outer protective tube 102, thereby connecting two adjacent sections of the outer protective tube 102 in the axial direction.

[0047] The first support ring 120 is supported between two adjacent insulating sleeves 110. The second support ring 130 is sleeved at the connection of two adjacent wire harness conduits 101. The second support ring 130 is coaxially arranged with the wire harness conduit 101 and is supported between the wire harness conduit 101 and the insulating sleeve 110 near the wire harness conduit 101.

[0048] In this embodiment, the high-voltage protection device 100 fixes two adjacent sections of wire harness conduit 101 by the second support ring 130 (see...). Figure 2 The high-voltage protection device 100 fixes two adjacent sections of the outer protective tube 102 with the insulating sleeve 110. Under the joint action of the insulating sleeve 110 and the first support ring 120, the wire harness pipe 101 and the outer protective tube 102 are supported and fixed. While achieving high-voltage insulation protection, the coaxiality of the wire harness pipe 101 and the outer protective tube 102 is ensured.

[0049] The high-voltage protection device 100 is made of insulating material. For example, the insulating material may be polytetrafluoroethylene (PTFE).

[0050] It is understandable that the number of insulating sleeves 110 can be increased or decreased depending on different withstand voltage requirements. For example, when the withstand voltage requirement is high, three or more insulating sleeves 110 can be set; when the withstand voltage requirement is low, only one insulating sleeve 110 can be set, and the first support ring 120 can be omitted.

[0051] For example, in this embodiment, the withstand voltage requirement is 450kV. The design of the high voltage protection device 100 needs to meet the withstand voltage requirements and connection strength. On this basis, the self-weight of the high voltage protection device 100 should also be considered to reduce the weight of the entire device as much as possible.

[0052] Furthermore, when there are at least two insulating sleeves 110, the lengths of the multiple insulating sleeves 110 are different along the radial direction of the insulating sleeves 110 (which is also the radial direction of the wire harness conduit 101), and the length of the insulating sleeve 110 closer to the outer protective tube 102 is larger.

[0053] The length of the multiple insulating sleeves 110 is designed to gradually increase from the inside out (radial direction), which can improve the insulation protection at the splicing position F of the wire harness conduit 101. The high-voltage protection device 100 is distributed in a "pyramid" structure in the radial direction. Through the gradient distribution of the insulating sleeves 110, the creepage distance is improved, the gradient optimization of the high-voltage electric field is achieved, and high-voltage discharge is avoided.

[0054] The second support ring 130 is shorter in the axial direction than the insulating sleeve 110, which facilitates installation into the wire harness conduit 101. In this embodiment, the second support ring 130 and the multiple insulating sleeves 110 together form a pyramid-shaped distribution, optimizing the electric field distribution.

[0055] Furthermore, in one specific embodiment of this application, the ratio of the axial length of each insulating sleeve 110 to its radial distance from the wire harness conduit 101 is the same. (See reference...) Figure 2 It can be understood that the splicing position F of the wire harness conduit 101 is a high-potential region, while the outer protective tube 102 is usually grounded. The combined design of the length and spacing dimensions of the multiple insulating sleeves 110 in the high-voltage protection device 100 can optimize the distribution of the high-voltage electric field. In another embodiment of this application, the ratio of the inner diameter to the axial length of each insulating sleeve 110 is the same.

[0056] It is understood that those skilled in the art can adjust the dimensions of each insulating sleeve 110, including its length, thickness and inner diameter, according to actual usage requirements to achieve the best pressure resistance.

[0057] Furthermore, along the radial direction from the wire harness conduit 101 to the outer protective tube 102, the spacing between two adjacent insulating sleeves 110 gradually increases. It should be understood that the radial spacing requirement between two adjacent insulating sleeves 110 is limited to preventing high-voltage discharge (breakdown) in the radial direction. In this embodiment, by optimizing the structural design at low potential, the overall weight of the entire high-voltage protection device 100 and the space occupation can be greatly reduced while ensuring structural strength and withstand voltage.

[0058] See Figure 1 , Figure 3 and Figure 4 In this embodiment, along the radial direction, the insulating sleeve 110 includes a first insulating sleeve 111, a second insulating sleeve 112, and a third insulating sleeve 113 arranged sequentially from the outer protective tube 102 to the wire harness conduit 101.

[0059] In one embodiment of this application, the first insulating sleeve 111 has a length of 1200 mm and an outer diameter of 356 mm. The second insulating sleeve 112 has a length of 720 mm and an outer diameter of 250 mm. The third insulating sleeve 113 has a length of 220 mm and an outer diameter of 160 mm.

[0060] A pair of first support rings 120 are provided between two adjacent insulating sleeves 110. The pair of first support rings 120 are symmetrically distributed on both sides of the second support ring 130, and are symmetrically distributed with respect to the splicing position F of the wire harness conduit 101 (see...). Figure 2 Multiple first support rings 120 can improve the structural strength and support stability of the high-voltage protection device 100, and ensure a safe and reliable connection between the outer protection pipe 102 and the wire harness pipe 101.

[0061] Further, refer to Figure 3 and Figure 4In this embodiment, the radial dimension of the first support ring 120 is larger than that of the insulating sleeve 110. This reduces the overall weight of the high-voltage protection device 100 and also reduces the manufacturing difficulty of the insulating sleeve 110.

[0062] The first support ring 120 has at least two through holes 121 extending axially, and the at least two through holes 121 are evenly spaced around the axis of the wire harness conduit 101. The through holes 121 can further reduce the overall weight of the high-voltage protection device 100 without affecting the insulation effect. Specifically, during the operation of the particle accelerator, insulating gas can be passed between the wire harness conduit 101 and the outer protective tube 102 to improve the withstand voltage performance, prevent high-voltage arcing, and enhance safety. The through holes 121 on the first support ring 120 facilitate the flow of insulating gas. Figure 3 Figure 3 As shown, in this embodiment, the first support ring 120 is provided with a plurality of through holes 121, which are distributed in a circumferential array.

[0063] In one embodiment, both the first support ring 120 and the second support ring 130 are made of polytetrafluoroethylene (PTFE) and are formed by mold casting. The insulating sleeve 110 can also be formed by mold casting of PTFE.

[0064] In one embodiment of this application, the first insulating sleeve 111 has a length of 1200 mm and an outer diameter of nearly 360 mm, which is relatively large. Manufacturing it using a custom mold would be costly. Furthermore, different insulating sleeves 110 have different dimensions, requiring custom molds of different sizes to be made according to actual needs, significantly increasing manufacturing costs. Therefore, the insulating sleeve 110 is made by winding DuPont paper. DuPont paper has a certain degree of flexibility and can be flexibly wound according to the actual dimensions of the insulating sleeve 110.

[0065] According to this design, the first support ring 120, the second support ring 130, and the insulating sleeve 110 can all be made of polytetrafluoroethylene (PTFE), which has excellent insulation properties and is suitable for extreme environments. When the inner diameter or length of the insulating sleeve 110 is relatively large, it can also be made by winding DuPont paper, which greatly reduces the manufacturing difficulty and production cost.

[0066] In a preferred embodiment of this application, the insulating sleeve 110 includes a paper tube and a retaining ring. The paper tube is made by winding DuPont paper, and the retaining ring has a slot that matches the paper tube. It is snapped onto both ends of the paper tube, which improves the overall structural strength of the insulating sleeve 110 and can effectively prevent the paper tube from deforming.

[0067] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “setup” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0068] This application has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this application, and all such variations and modifications fall within the scope of protection claimed in this application.

Claims

1. A high-voltage protection device for a particle accelerator, supported and disposed between the wire harness conduit and the outer protective tube of the particle accelerator, and used to connect two adjacent sections of the wire harness conduit in the axial direction, characterized in that, The high-voltage protection device is symmetrically distributed at the splicing positions of two adjacent sections of the wire harness conduit, and the high-voltage protection device includes: At least two insulating sleeves, the insulating sleeves being cylindrical in shape, the at least two insulating sleeves being coaxially distributed and spaced apart along the radial direction of the outer protective tube, the insulating sleeves closer to the outer protective tube being inserted into the outer protective tube to connect two adjacent sections of the outer protective tube in the axial direction; A first support ring, wherein the first support ring is supported and disposed between two adjacent insulating sleeves; and The second support ring is sleeved at the connection of two adjacent sections of the wire harness conduit. The second support ring is coaxially arranged with the wire harness conduit and is supported between the wire harness conduit and the insulating sleeve near the wire harness conduit.

2. The high-voltage protection device according to claim 1, characterized in that, Along the radial direction of the insulating sleeve, the lengths of the plurality of insulating sleeves are different, and the length of the insulating sleeve closer to the outer protective tube is larger.

3. The high-voltage protection device according to claim 2, characterized in that, Along the radial direction from the wire harness conduit to the outer protective tube, the spacing between two adjacent insulating sleeves gradually increases.

4. The high-voltage protection device according to claim 2, characterized in that, The ratio of the length of each insulating sleeve in the axial direction to its distance from the wire harness conduit in the radial direction is the same.

5. The high-voltage protection device according to claim 4, characterized in that, Along the radial direction, the insulating sleeve includes a first insulating sleeve, a second insulating sleeve, and a third insulating sleeve arranged sequentially from the outer protective tube to the wire harness conduit.

6. The high-voltage protection device according to claim 1, characterized in that, A pair of first support rings are provided between two adjacent insulating sleeves, and the pair of first support rings are symmetrical with respect to the second support ring.

7. The high-voltage protection device according to claim 1, characterized in that, The first support ring has a larger dimension in the radial direction than the insulating sleeve has in the radial direction.

8. The high-voltage protection device according to claim 1, characterized in that, The first support ring has at least two through holes, which extend along the axial direction and are evenly spaced apart around the axis of the wire harness conduit.

9. The high-voltage protection device according to any one of claims 1 to 8, characterized in that, Both the first support ring and the second support ring are made of polytetrafluoroethylene; The insulating sleeve is made by winding DuPont paper, or the insulating sleeve is a polytetrafluoroethylene insulating sleeve.

10. The high-voltage protection device according to any one of claims 1 to 8, characterized in that, The insulating sleeve includes a paper tube and a retaining ring. The paper tube is made by winding DuPont paper, and the retaining ring is snapped onto both ends of the paper tube. The retaining ring has a groove that matches the paper tube.

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