High-power microwave driving source insulation large plate anti-slip flashover device
By designing a wave serrated structure on the insulating large plate of high-power microwave drive source and using MC nylon materials, the insulation performance and mechanical stability of the traditional insulating large plate in high voltage environments is solved, and higher insulation performance and longer service life are achieved.
Patent Information
- Application Number
- CN202510352448.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2025-05-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the high voltage environment, the insulating plates of traditional high-power microwave drive sources have problems such as insufficient creepage distance, aging of insulation materials, uneven electric field distribution, poor mechanical stability, difficulty in heat dissipation and weak moisture resistance, resulting in the equipment being prone to short circuits, degraded insulation performance and shortened service life.
A high-power microwave drive source insulation large plate anti-slip flash device is designed, and a wave sawtooth structure on the surface of the plate is used to increase the climbing distance of the arc through the wave sawtooth structure, block the arc conduction between the high-voltage medium cylinder and the low-voltage shell, and use MC nylon material to provide insulation and mechanical strength.
It significantly increases the climbing distance of the arc, improves insulation performance and mechanical stability, optimizes the electric field distribution, reduces the possibility of arc flashover, and extends the service life of the equipment.
Smart Images
Figure CN120048596A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of high-power microwave conduction, and particularly to an anti-slip flashover device for the insulating large board of a high-power microwave driver source. Background Art
[0002] In the current era of rapid technological development, high-power microwave driver sources play a crucial role in many fields such as radar systems, communication equipment, industrial heating, and medical instruments. The normal operation of high-power microwave driver sources has a decisive impact on the performance and working effect of the equipment in these fields, and the insulation problem has always been a key challenge to ensure its stable operation.
[0003] Application of traditional insulating materials: In the early stage, ceramic materials were often used for the insulating part of high-power microwave driver sources. Ceramics have high hardness and certain insulating properties, and can withstand high voltages to a certain extent. At the same time, glass fiber reinforced plastics are also widely used. It has good mechanical strength and electrical insulation characteristics, and can meet the basic insulation requirements in some conventional environments.
[0004] Insulating design with simple structure: Traditional insulating large boards are mostly flat-shaped structures. This design is relatively simple and easy to manufacture. Its working principle mainly relies on the insulating properties of the material itself to prevent the conduction of current and achieve the isolation between the high-voltage and low-voltage parts.
[0005] Problems existing in the prior art:
[0006] 1. In terms of insulation performance
[0007] Insufficient creepage distance: The surface of the traditional flat insulating large board is relatively smooth, and the path of the arc crawling on its surface is short. Under the action of the high voltage generated by the high-power microwave driver source, the arc is easily formed along the surface of the insulating board to cause flashover, resulting in a short circuit between the high-voltage middle cylinder and the low-voltage outer shell. Once the flashover phenomenon occurs, it will not only cause an instant failure of the equipment, affect its normal operation, but also may damage other components in the whole system, and greatly shorten the service life of the equipment.
[0008] Aging of insulating materials: Although ceramics have high hardness, they are prone to cracks and aging under long-term high-voltage and high-temperature environments, thus reducing their insulating performance. In a humid environment, moisture will penetrate into the interior of the glass fiber reinforced plastic, resulting in a decrease in its insulation resistance and increasing the risk of leakage and flashover.
[0009] 2. In terms of structural design
[0010] Uneven electric field distribution: The flat insulating structure cannot effectively optimize the distribution of the electric field. During the operation of the high-power microwave driving source, the electric field will concentrate at the edges and certain specific areas of the insulating plate, making the electric field intensity in these areas much higher than that in other parts. This uneven electric field distribution will lead to partial discharge phenomena, further accelerating the aging and damage of the insulating material and seriously affecting the insulation performance.
[0011] Poor mechanical stability: The structural design of the traditional large insulating board has limited bearing capacity for mechanical stress. During the installation, transportation and operation of the equipment, it will inevitably be affected by external forces such as vibration and impact. Due to the weak anti-deformation ability of the flat structure, it is easy to occur bending, fracture and other situations, thus destroying the insulation performance and even causing safety accidents.
[0012] 3. In terms of environmental adaptability
[0013] Difficult heat dissipation: A large amount of heat will be generated when the high-power microwave driving source is working, while the traditional large insulating board has poor heat dissipation performance. The accumulation of heat will not only lead to a decline in the performance of the insulating material, but also may cause thermal breakdown phenomena, resulting in insulation failure.
[0014] Weak moisture-proof ability: In a humid environment, a water film is likely to form on the surface of the traditional large insulating board. The water film will reduce the insulation resistance and increase the possibility of flashover. Moreover, the humid environment will also accelerate the corrosion and aging of the insulating material, further shortening its service life.
[0015] In summary, there are many problems in the existing insulation technology of high-power microwave driving sources, and it has been difficult to meet the requirements of modern high-power microwave equipment for insulation performance, stability and environmental adaptability. Therefore, it is of great practical significance to develop a new type of anti-flashover device for the insulating large board of high-power microwave driving sources. Summary of the Invention
[0016] The purpose of the present invention is: aiming at the above existing problems, the present invention provides an anti-flashover device for the insulating large board of a high-power microwave driving source. By placing the device between the high-voltage middle cylinder and the low-voltage outer shell of the driving source, it can effectively support the high-voltage middle cylinder and provide insulation; the wavy serrated structure on the surface of the board significantly increases the climbing distance of the arc, making it difficult for the arc to form a conduction path between the high-voltage middle cylinder and the low-voltage outer shell.
[0017] The technical solution adopted by the present invention is as follows:
[0018] An anti-flashover device for the insulating large board of a high-power microwave driving source, the device is arranged between the high-voltage middle cylinder and the low-voltage outer shell of the driving source, and is used to support the high-voltage middle cylinder through the device and provide insulation through the device. The device includes:
[0019] The plate body has a wavy serrated structure on its surface. By means of this wavy serrated structure, the climbing distance of the arc of the driving source is increased, and the arc conduction between the high-pressure middle cylinder and the low-pressure outer shell is blocked.
[0020] Further, the plate body is made of MC nylon material.
[0021] Further, both sides of the plate body are inclined planes, and the lengths of the top surface and the bottom surface of the plate body are different.
[0022] Further, the surface of the plate body opposite to the wavy serrated surface is a curved surface.
[0023] Further, the extensions of the two edges of the curved surface intersect at a right angle.
[0024] Further, a plurality of long slot openings are provided along the length direction on one side of the top surface and the bottom surface of the plate body close to the wavy serrated surface.
[0025] Further, the angle of each serration of the wavy serrated structure is 30°.
[0026] Further, the ratio of the lengths of the two tooth surfaces of each serration of the wavy serrated structure is 1:2.
[0027] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:
[0028] An anti - flashover device for the insulating large plate of a high - power microwave driving source of the present invention. The surface of the plate body adopts a wavy serrated structure, and this design greatly increases the climbing distance of the arc of the driving source. Compared with the traditional flat structure, the arc needs to crawl along a complex wavy serrated path and it is difficult to form conduction between the high - pressure middle cylinder and the low - pressure outer shell. The curved surface design and the unique design that the extensions of the two edges of the curved surface intersect at a right angle work together to optimize the electric field distribution; these special structures can guide the electric field lines to be more evenly distributed and avoid the over - concentration of the electric field in local areas. The plate body is made of MC nylon material, which has good insulation performance, mechanical strength and wear resistance; its insulation performance ensures that it can effectively isolate the current in the high - voltage environment of the high - power microwave driving source and prevent electric leakage. The relatively high mechanical strength enables the plate body to bear the weight of the high - pressure middle cylinder and the vibration during operation and is not easily deformed or damaged. Description of the Drawings
[0029] Figure 1 is a schematic structural diagram of an anti - flashover device for the insulating large plate of a high - power microwave driving source of the present invention;
[0030] Figure 2 is the present invention Figure 1 the enlarged view at A in;
[0031] Figure 3 is the present invention Figure 1Enlarged view at position B in the [drawing].
[0032] Reference numerals in the figure: 1 - plate body, 2 - wavy serrated structure surface, 3 - curved surface, 4 - long slot A, 5 - long slot B. Detailed implementation manners
[0033] The present invention will be described in detail below with reference to the accompanying drawings.
[0034] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0035] Embodiment
[0036] An anti - flashover device for the insulating large plate of a high - power microwave driving source. The device is arranged between the high - voltage middle cylinder and the low - voltage outer shell of the driving source, and is used to support the high - voltage middle cylinder and provide insulation through the device. The device includes:
[0037] The plate body 1. In this embodiment, the plate body 1 is made of MC nylon material. The MC nylon material has excellent comprehensive performance. It has good insulation performance, can effectively prevent current leakage, and ensure the normal operation of the device in a high - voltage environment. At the same time, the MC nylon material has high mechanical strength and wear resistance, can bear the weight of the high - voltage middle cylinder and the friction and wear during long - term use, reducing the maintenance cost and replacement frequency of the equipment.
[0038] As Figure 1 shown, the surface of the plate body 1 has a wavy serrated structure. The angle of each serration of the wavy serrated structure is 30°, and the ratio of the lengths of the two tooth surfaces of each serration of the wavy serrated structure is 1:2. The wavy serrated structure surface 2 increases the climbing distance of the driving - source arc and blocks the arc conduction between the high - voltage middle cylinder and the low - voltage outer shell; the wavy serrated structure on the surface of the plate body 1 significantly increases the climbing distance of the arc, making it difficult for the arc to form a conduction path between the high - voltage middle cylinder and the low - voltage outer shell, greatly improving the safety and stability of the operation of the high - power microwave driving source; the design of the angle of 30° for each serration of the wavy serrated structure is the optimal angle verified by a large number of experiments; this angle can increase the creepage distance while making it more difficult for the arc to crawl on the serrated surface, thereby improving the anti - flashover effect and enhancing the insulation performance of the device in a high - voltage environment. The design of the ratio of the lengths of the two tooth surfaces of each serration of the wavy serrated structure being 1:2 further optimizes the crawling path of the arc. This asymmetrical tooth - surface length makes the arc need to overcome more obstacles during crawling, increasing the difficulty of arc conduction and thus improving the anti - flashover ability.
[0039] Both sides of the plate body 1 are inclined planes, and the lengths of the top and bottom surfaces of the plate body are different. The surface opposite to the wavy serrated structure surface 2 in the plate body 1 is a curved surface 3, and the extended lines of both sides of the curved surface 3 intersect at a right angle; the inclined plane design on both sides of the plate body 1 and the structure with different lengths of the top and bottom surfaces optimize the mechanical properties and electric field distribution of the plate body 1; the inclined plane can disperse stress, making the plate body more stable when bearing the pressure of the high-pressure middle cylinder, and reducing the risk of damage caused by stress concentration. This special structure can also improve the electric field distribution, avoid the excessive concentration of the electric field in a local area, and thus reduce the possibility of arc flashover. The curved surface design of the plate body relative to the wavy serrated surface further optimizes the electric field distribution. The curved surface can guide the electric field lines to be more evenly distributed, avoid the concentration of the electric field in some areas, reduce the possibility of partial discharge, improve the insulation performance and reliability of the device. The design that the extended lines of both sides of the curved surface intersect at a right angle makes the electric field distribution in this area more regular and controllable; this precise geometric shape can further optimize the electric field distribution, reduce the electric field distortion, and thus reduce the risk of arc flashover and improve the stability of the device in a high-voltage environment.
[0040] As Figure 2 and Figure 3 shown, on the side of the top and bottom surfaces of the plate body 1 close to the wavy serrated surface, a plurality of long strip slots A4 and long strip slots B5 are respectively opened along the length direction; the long strip slots opened on the top and bottom surfaces of the plate body have various beneficial effects. On the one hand, these slots increase the creepage distance on the surface of the plate body, further enhancing the anti-slip flashover ability; on the other hand, they can also play a role in heat dissipation and drainage; during the operation of the high-power microwave drive source, the generated heat can be dissipated through the slots, avoiding the decline of insulation performance caused by too high temperature.
[0041] A non-slip flashover device for the insulating large plate of a high-power microwave drive source in this embodiment is used to prevent the high-voltage arc from conducting to the low-voltage outer shell, ensure the consistency of the concentric spacing between the high-pressure middle cylinder and the low-voltage outer shell, ensure the insulation between the high-pressure middle cylinder and the low-voltage outer shell, and prevent arc conduction and current breakdown. The surface of the structure is designed as a wavy serrated surface, increasing the climbing distance of the arc, and can effectively block the arc from conducting to the outer shell; the material is selected as MC nylon material, which can effectively prevent high-voltage breakdown, ensure that the distance between the inner cylinder and the outer shell bracket will not change due to temperature changes, and has strong environmental adaptability, high reliability, and light weight.
[0042] Specific embodiments are used in this article to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "top", "bottom", "opposite", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.
[0044] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
Claims
1. A high-power microwave drive source insulation large plate anti-slip flash device, characterized in that: The device is arranged between the high-voltage middle cylinder of the driving source and the low-voltage housing, and is used to erect the high-voltage middle cylinder through the device and provide insulation through the device, and the device comprises: The plate body has a wave sawtooth structure on its surface, which increases the climbing distance of the driving source arc and blocks the arc conduction between the high-voltage middle cylinder and the low-voltage shell.
2. A high-power microwave drive source insulating large plate anti-slip flash device according to claim 1, characterized in that: The plate body is made of MC nylon material.
3. The high-power microwave drive source insulation large plate anti-slip flash device according to claim 1, characterized in that: The two sides of the plate body are inclined surfaces, and the top surface and the bottom surface of the plate body are of different lengths.
4. The high-power microwave drive source insulating large plate anti-slip flash device according to claim 3, characterized in that: A surface of the plate body opposite to the wave serrated surface is a curved surface.
5. The high-power microwave drive source insulating large plate anti-slip flash device according to claim 4, characterized in that: The two edges of the curved surface intersect at a right angle along the extended lines of the curve.
6. The high-power microwave drive source insulating large plate anti-slip flash device according to claim 3, characterized in that: A plurality of long slots are provided along the length direction of the top surface and the bottom surface of the plate body on one side close to the wave sawtooth surface.
7. The high-power microwave drive source insulating large plate anti-slip flash device according to claim 1, characterized in that: The angle of each sawtooth of the wave sawtooth structure is 30°.
8. The high-power microwave drive source insulating large plate anti-slip flash device according to claim 1, characterized in that: The length of the two tooth surfaces of each sawtooth in the wave sawtooth structure is 1:2.