High-power microwave driving source tail end insulator

Abstract

The invention discloses an insulator at the tail end of a high-power microwave driving source, relates to the field of high-power microwave conduction, is applied to a high-power microwave pulse driving source and is used for solving the problems that high-voltage and low-voltage conduction in the driving source exists, most existing insulating supports are made of common insulating materials, the surface is flat, and the cost is low. The surface of the insulator is designed to be a wave-shaped surface, so that the climbing distance of the electric arc between a high-voltage electrode and a low-voltage electrode is effectively increased, the electric arc is effectively blocked, a high-molecular polyethylene material is selected in the aspect of material, and the electric arc is prevented from being broken down in the ultrahigh-voltage environment. And high-voltage breakdown can be effectively prevented.

Description

Technical Field

[0001] The invention relates to the field of high-power microwave conduction, and in particular to a high-power microwave driving source tail end insulator. Background Art

[0002] In the context of the booming development of high-power microwave drive source technology today, the tail insulator, as one of the core components to ensure the safe and stable operation of the entire system, shoulders the important task of supporting high-voltage electrodes and low-voltage electrodes and ensuring electrical insulation. The quality of its performance is directly related to whether the high-power microwave drive source can function reliably.

[0003] Traditional high-power microwave drive source tail insulators have many limitations in material selection. For a long time, ceramic materials have become a more common insulator material due to their relatively good insulation properties and certain mechanical strength. However, the inherent disadvantages of ceramic insulators are difficult to ignore. Due to their inherent brittleness, they will inevitably encounter various working conditions during the actual operation of high-power microwave drive sources. Frequent thermal expansion and contraction, due to the heat changes generated during system operation and the fluctuations in ambient temperature, cause the internal stress of ceramic insulators to accumulate continuously, which can easily cause cracking problems over time. At the same time, mechanical vibration is the norm of equipment operation. Whether it is the operating vibration of the drive source itself or the vibration interference transmitted from other surrounding equipment, it increases the risk of ceramic insulator damage. What's worse, occasional external force impact, even an inadvertent slight collision, may be the last straw that breaks the camel's back, causing the insulator to crack instantly. Once cracks or damage occur, the insulating effect of the insulator will be greatly reduced, and the hidden danger of electrode short circuit will follow. In severe cases, it will directly induce catastrophic equipment failure, posing a huge threat to the life safety of operators. According to detailed industry statistics, in many industrial application scenarios such as industrial microwave heating and radar transmission, high-power microwave drive sources using ceramic insulators have an average annual increase in the frequency of equipment downtime maintenance due to insulator cracks, which not only causes a large amount of production downtime loss, but also comes with high maintenance costs.

[0004] Ordinary glass insulators also have obvious shortcomings in terms of chemical stability. In the actual working environment, the surface of ordinary glass insulators will gradually undergo chemical reactions under the long-term erosion of humid air, acid-base corrosive gases or liquids, forming tiny pits, cracks, and even conductive channels. In this way, the risk of leakage increases exponentially, seriously threatening the electrical safety of the entire system. In addition, the processing characteristics of the glass material itself determine that it is difficult to manufacture. It is extremely difficult to create a fine and complex structure that meets the special needs of high-power microwave drive sources. This leads to the fact that when faced with key technical problems such as optimizing the electric field distribution and suppressing the generation of arcs, ordinary glass insulators often seem to be unable to do their best and cannot provide strong support for high-power microwave drive sources.

[0005] From the perspective of structural design, most traditional insulators adopt a simple and intuitive columnar or flat shape. This overly conventional and uninnovative structural design allows the arc to easily find a "shortcut" on the surface of the insulator, and the crawling distance is greatly shortened. Once the high-power microwave drive source is in a high-intensity working state of high voltage and high current, the arc can easily break through the insulator and instantly cause an electrical accident. Moreover, traditional insulators lack flexibility in the design of the connection section. They usually adopt a unified length specification and a single form, without considering the diverse needs of different high-voltage and low-voltage electrodes in terms of structural form, installation method, etc. As a result, in the actual assembly process, operators have to spend a lot of extra time and energy to perform tedious adjustments and adaptations, which undoubtedly significantly increases the difficulty of assembly, prolongs the assembly time, and makes the production efficiency invisibly greatly reduced. Summary of the invention

[0006] The purpose of the present invention is: to address the above-mentioned problems, the present invention provides a high-power microwave drive source tail insulator, by designing the surface of the insulator structure into a wavy surface, the climbing distance of the arc is increased, and the arc can be effectively blocked. The insulator material is made of ultra-high molecular polyethylene material, which can effectively prevent high-voltage breakdown.

[0007] The technical solution adopted by the present invention is as follows:

[0008] A high-power microwave driving source tail end insulator, the insulator is used to support the high-voltage electrode and the low-voltage electrode of the driving source, the insulator is a non-metallic insulator, and the insulator includes:

[0009] The middle section is an undulating structure for increasing the arc climbing distance;

[0010] The connecting sections are located at both ends of the middle section and are used to connect the high-voltage electrode and the low-voltage electrode.

[0011] Due to the adoption of the above technical solution, the insulator is made of non-metallic material, and the undulating structure of the middle section effectively increases the arc climbing distance, greatly improves the arc resistance of the insulator, reduces the risk of arc breakdown, and makes the high-power microwave drive source more stable and reliable during operation. The connecting sections are located at both ends of the middle section, which can stably connect the high-voltage electrode and the low-voltage electrode, ensure the connection stability between the electrode and the insulator, and further improve the safety of the entire drive source system.

[0012] Furthermore, the insulator is made of ultra-molecular weight polyethylene material.

[0013] Due to the adoption of the above technical solutions, the ultra-molecular polyethylene material has excellent insulation performance, wear resistance and chemical stability. Its good insulation performance can further enhance the insulation isolation effect of the insulator between the high-voltage electrode and the low-voltage electrode, reducing the occurrence of leakage. At the same time, the wear resistance ensures that the insulator is not easily damaged during long-term use, extending the service life of the insulator. The chemical stability enables the insulator to adapt to various complex working environments, such as humid and chemically corrosive environments, and improves the applicability and reliability of the tail end insulator of the high-power microwave drive source.

[0014] Furthermore, the undulating structure of the middle section is specifically a wave-like structure.

[0015] Due to the adoption of the above technical solution, the wave-type structure has a more regular and continuous shape compared to other undulating structures, which can more effectively increase the arc climbing distance. This regular shape requires the arc to pass through a longer path when crawling on the surface of the insulator, thereby greatly improving the arc resistance performance of the insulator. At the same time, the wave-type structure is easier to achieve standardization and large-scale production during the manufacturing process, reducing production costs and improving production efficiency.

[0016] Furthermore, the wave-like structure includes no less than 4 wave peaks.

[0017] Furthermore, in the wave-like structure, the wave crest height is the same as the wave trough depth.

[0018] Due to the adoption of the above technical solution, the design of the same crest height and trough depth makes the wave-like structure more symmetrical and uniform. This symmetry and uniformity helps to make the arc crawling process on the insulator surface more stable and controllable, avoiding the arc concentration in a certain area due to the large difference between the crest height and the trough depth, thereby improving the overall arc resistance performance of the insulator. At the same time, this regular structure is also conducive to the quality control and inspection of the insulator during the production process.

[0019] Furthermore, the distances between two adjacent wave crests in the wave-like structure are the same.

[0020] Due to the adoption of the above technical solution, the design of equal distance between two adjacent wave peaks makes the wave structure have good periodicity and regularity. This not only makes the obstruction of the arc when crawling on the surface of the insulator more uniform, further improving the arc resistance performance, but also facilitates the precise design and processing of the wave structure during the manufacturing process. At the same time, this regular structure helps to accurately evaluate and predict the performance of the insulator in practical applications.

[0021] Furthermore, the connecting section includes a first connecting section and a second connecting section, the first connecting section and the second connecting section are respectively arranged at two ends of the middle section, and the first connecting section and the second connecting section have different lengths.

[0022] Due to the adoption of the above technical solution, the design of different lengths of the first connecting section and the second connecting section can be specifically adapted according to the different structures and installation requirements of the high-voltage electrode and the low-voltage electrode. The connecting sections of different lengths can better connect with the electrodes, improving the stability and reliability of the connection. At the same time, this design also increases the flexibility of the insulator in practical applications, allowing it to adapt to more different types of high-power microwave drive sources and expand its scope of application.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] A high-power microwave drive source tail insulator of the present invention uses non-metallic ultra-molecular weight polyethylene material, which combines excellent insulation performance, outstanding wear resistance and outstanding chemical stability, and solves the problem that traditional materials are fragile and easy to corrode; the undulating structure is innovatively designed, that is, the wave structure, which cleverly extends the climbing distance of the arc, greatly increases the climbing distance of the arc on the surface of the insulator without increasing the length of the device itself, greatly improves the arc resistance, saves usage space, and solves the problem that traditional structures are easily broken down by arcs; it effectively solves the insulation support problem of high voltage and low voltage, has strong environmental adaptability, high reliability and light weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a tail end insulator of a high-power microwave driving source of the present invention.

[0026] Markings in the figure: 1-middle section, 2-first connecting section, 3-second connecting section, 4-peak, 5-trough. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended to limit the present invention.

[0029] Example

[0030] This embodiment provides a high-power microwave drive source tail end insulator, such as Figure 1 As shown, the insulator of this embodiment is used to support the high-voltage electrode and the low-voltage electrode of the high-power microwave pulse drive source to ensure the consistency of the concentric spacing between the high-voltage electrode and the low-voltage electrode. The insulator in this embodiment is a non-metallic insulator, including insulating materials such as polytetrafluoroethylene, ceramic materials, and epoxy resins. Preferably, this embodiment selects ultra-molecular polyethylene materials; the specific structure of the insulator in this implementation includes:

[0031] The middle section 1, i.e. the core part of the insulator, is selected as an undulating structure in the present embodiment. In a high-power microwave environment, arc discharge may occur on the surface of the insulator, and the arc will generate high temperature and strong electromagnetic interference. The undulating structure can effectively increase the climbing distance of the arc, thereby effectively blocking the arc; the undulating structure selected in the present embodiment is specifically a wave-like structure, which is more regular and continuous in the undulating structure, and more effectively increases the climbing distance of the arc. Moreover, in the undulating structure in the present embodiment, the height of the crest 4 is the same as the depth of the trough 5, which makes the wavy structure more symmetrical, avoiding the arc being concentrated in a certain area due to the large difference between the crest height and the trough depth, thereby improving the overall arc resistance of the insulator.

[0032] The connecting sections in this embodiment are respectively located at both ends of the middle section 1 and are used to connect the high-voltage electrode and the low-voltage electrode.

[0033] In this embodiment, the connecting section includes a first connecting section 2 and a second connecting section 3, which are respectively arranged at two ends of the middle section 1, and the first connecting section 2 and the second connecting section 3 are different in length. The design of different lengths of the first connecting section 2 and the second connecting section 3 can be specifically adapted according to the different structures and installation requirements of the high-voltage electrode and the low-voltage electrode. Connecting sections of different lengths can better connect with the electrode, thereby improving the stability and reliability of the connection.

[0034] The insulator of this embodiment is applied to a high-power microwave pulse drive source to solve the problem of high and low voltage conduction in the drive source. Existing insulating supports are mostly made of ordinary insulating materials with a flat surface. They are easily broken down in an ultra-high voltage environment or cannot block the arc, causing high and low voltage conduction, affecting the quality and service life of the equipment. In this embodiment, the surface of the insulator is designed to be a wavy surface, which effectively increases the climbing distance of the arc between the high and low voltage electrodes and effectively blocks the arc. In terms of material, high molecular polyethylene material is selected to effectively prevent high voltage breakdown.

[0035] The principles and implementation methods of the present invention are described in this article using specific embodiments. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0036] In the description of the present invention, it should be noted that the orientation or position relationship indicated by the term "middle" etc. is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, 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 tail insulator, characterized in that: The insulator is used to support the high-voltage electrode and the low-voltage electrode of the driving source. The insulator is a non-metallic insulator and includes: The middle section is an undulating structure for increasing the arc climbing distance; The connecting sections are located at both ends of the middle section and are used to connect the high-voltage electrode and the low-voltage electrode.

2. The high-power microwave driving source tail insulator according to claim 1, characterized in that: The insulator is made of ultra-molecular weight polyethylene material.

3. The high-power microwave driving source tail insulator according to claim 1, characterized in that: The undulating structure of the middle section is specifically a wave-like structure.

4. The high-power microwave driving source tail insulator according to claim 3, characterized in that: The wave-like structure includes no less than 4 wave peaks.

5. The high-power microwave driving source tail insulator according to claim 3, characterized in that: The wave crest height and the wave trough depth in the wave-like structure are the same.

6. The high-power microwave driving source tail insulator according to claim 3, characterized in that: The distances between two adjacent wave crests in the wave-like structure are the same.

7. The high-power microwave driving source tail insulator according to claim 1, characterized in that: The connecting section comprises a first connecting section and a second connecting section. The first connecting section and the second connecting section are respectively arranged at two ends of the middle section, and the first connecting section and the second connecting section have different lengths.

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