High-power microwave dual-drive source power synthesis device and method

Abstract

The invention discloses a high-power microwave dual-drive source power synthesis device and method, which relates to the field of high-power microwave conduction, two pulse drive sources, and a voltage doubling switch for connecting the two pulse drive sources; the voltage doubling switch comprises a cavity, both sides of the cavity are input ports, the input ports are respectively connected to the two pulse drive sources, a movable pulse pressure high-voltage electrode is arranged in the cavity, an output port is arranged at one end of the cavity, a pulse pressure ground electrode is arranged at the output port, the pulse pressure high-voltage electrode is opposite to the pulse pressure ground electrode, and the pulse pressure high-voltage electrode can point to the pulse pressure ground electrode displacement; the cavity is filled with insulating gas; the device provided by the invention has a small overall mass and volume, low power loss, and a power synthesis method is simple to operate, and arbitrary power adjustment can be achieved through an adjustable electrode gap.

Description

Technical Field

[0001] The invention relates to the field of high-power microwave transmission, and in particular to a high-power microwave dual-drive source power synthesis device.

[0002] The invention also relates to a high-power microwave dual-drive source power synthesis method. Background Art

[0003] As a key technology in the field of modern electronic science and engineering, high power microwave (HPM) technology has shown extremely important application value in many fields such as radar, communication, and electronic countermeasures. With the rapid development of science and technology, the demand for high power microwaves in various fields is increasing, which not only requires higher output power, but also puts forward more stringent standards for the stability, reliability and efficiency of microwave sources.

[0004] Traditional high-power microwave sources usually use a single-drive source mode, but this mode has many limitations. From the perspective of power improvement, there is a theoretical upper limit to the power output of a single-drive source. When trying to further increase the power, there will be a series of technical bottlenecks such as difficulty in focusing the electron beam, saturation of the cathode emission current density, and breakdown of the internal electric field of the device, making it difficult for a single-drive source to meet some application scenarios with extremely high power requirements. For example, in a high-resolution radar system, in order to achieve a longer detection distance and higher target resolution, extremely high transmission power is required, and a single-drive source is difficult to achieve such a high power level.

[0005] In terms of efficiency, a single drive source will generate large energy losses during energy conversion and transmission. Due to the limitations of its internal structure and working principle, part of the input energy will be dissipated in the form of heat energy, resulting in low overall energy conversion efficiency. This not only causes energy waste, but also causes the device to generate excessive heat, requiring an additional cooling system to maintain normal operation of the device, increasing the complexity and cost of the device.

[0006] From the perspective of stability and reliability, once a single drive source fails, the entire high-power microwave system will not work properly, which is unacceptable in some applications that require extremely high system reliability. For example, in the field of electronic warfare, if the high-power microwave system fails due to a single drive source failure, it may lead to mission failure and bring adverse consequences.

[0007] In order to break through these limitations of a single drive source, dual drive source power synthesis technology came into being. By synthesizing the power of two pulse drive sources, the output power can be effectively increased, overcoming the bottleneck of single drive source power enhancement. However, the current dual drive source power synthesis technology also faces many challenges in practical applications.

[0008] In the process of power synthesis, how to achieve accurate synchronization and matching between the two pulse drive sources is a key issue. If the pulse voltages of the two drive sources cannot be accurately matched in time, amplitude and phase, it will lead to low power synthesis efficiency and may even cause mutual interference, affecting the quality and stability of the output microwave.

[0009] In addition, the existing voltage doubler switch structure has the problem of insufficient electrical insulation performance when connecting two pulse drive sources. Under high voltage and high power working conditions, electrical breakdown is prone to occur, which will not only damage the equipment but also affect the normal operation of the system. Moreover, there is a lack of effective and precise control means for adjusting the distance between the pulse voltage high voltage electrode and the pulse voltage ground electrode inside the voltage doubler switch, making it difficult to flexibly adjust according to different working requirements and working conditions, thereby limiting the performance and application range of the device. Summary of the invention

[0010] The purpose of the present invention is: to address the above-mentioned problems, the present invention provides a high-power microwave dual-drive source power synthesis device, which converts ordinary AC power into a high-voltage, low-current large pulse voltage through two pulse drive sources through a Tesla transformer. The two groups of pulse drive sources share a group of voltage doubling switches. When the voltage reaches a specific value, the voltage doubling switch automatically turns on and propagates to the voltage doubling line assembly. The high-voltage pulses are repeatedly superimposed and increased in the voltage doubling line assembly. When the required high voltage is reached, the insulating gas switch automatically breaks down, and the high-power microwave is transmitted to the next-level equipment. The device solves the problem of synchronous synthesis triggering of the two sources.

[0011] The technical solution adopted by the present invention is as follows: A high-power microwave dual-drive source power synthesis device, the device comprising: Two pulse driving sources for providing pulse voltage; A voltage doubler switch, used to connect two pulse drive sources; The voltage doubler switch comprises: The cavity has input ports on both sides, the input ports are respectively connected to two pulse drive sources, a movable pulse pressure high-voltage electrode is arranged in the cavity, an output port is arranged at one end of the cavity, the output port is provided with a pulse pressure ground electrode, the pulse pressure high-voltage electrode is opposite to the pulse pressure ground electrode, and the pulse pressure high-voltage electrode can point to the pulse pressure ground electrode displacement; the cavity is filled with insulating gas.

[0012] Furthermore, the pulse pressure high voltage electrode is arranged in the cavity via a moving device, and the moving device can drive the pulse pressure high voltage electrode to point to the pulse pressure electrode displacement.

[0013] Furthermore, the cavity also includes a support frame for supporting the pulse pressure high voltage electrode, the pulse pressure high voltage electrode and the support frame are gap-matched, and the support frame is used for displacement guidance of the pulse pressure high voltage electrode.

[0014] Due to the adoption of the above technical solution, the setting of the support frame provides support and displacement guidance for the pulse pressure high voltage electrode, ensuring that the pulse pressure high voltage electrode maintains a stable motion trajectory during movement, avoiding shaking or deviation, and ensuring the reliability and stability of the device.

[0015] Furthermore, the mobile device comprises: A gear commutator, the gear commutator is located in the support frame, an adjusting screw is threadedly connected below the pulse pressure high voltage electrode, and one end of the adjusting screw away from the pulse pressure high voltage electrode cooperates with the gear commutator; A gear reversing driving device is connected with the adjusting connecting rod of the gear commutator and is used for driving the gear commutator.

[0016] Due to the adoption of the above technical solution, by utilizing the cooperation of the gear commutator and the adjusting screw, and the gear commutation drive device driving the gear commutator, the movement of the drive device can be converted into the linear displacement of the pulse pressure high voltage electrode, thereby realizing the precise adjustment of the position of the pulse pressure high voltage electrode and improving the control accuracy of the device.

[0017] Furthermore, the gear reversing drive device comprises: An adjusting rod, wherein the adjusting rod is coaxially connected to an adjusting connecting rod of a gear commutator, the adjusting rod is a non-metallic adjusting rod, and one end of the adjusting rod away from the gear commutator extends out of a cavity, and one end of the adjusting rod extending out of the cavity is rotationally connected to the cavity through a planar thrust bearing.

[0018] Due to the adoption of the above technical solution, the use of a non-metallic adjusting rod can avoid problems such as conductivity in a high voltage environment, thereby ensuring the safety of the device; the adjusting rod is rotatably connected to the cavity through a planar thrust bearing, which makes it convenient for the operator to operate the gear reversing drive device outside the cavity to adjust the position of the pulse pressure high-voltage electrode.

[0019] Furthermore, a sealing adjustment cover is provided at the connection between one end of the adjustment rod extending out of the cavity and the cavity.

[0020] Due to the adoption of the above technical solution, the setting of the sealing adjustment cover can prevent the leakage of insulating gas in the cavity, and also prevent external dust, moisture, etc. from entering the cavity, thereby ensuring the stability of the environment in the cavity and improving the reliability and service life of the device.

[0021] Furthermore, the insulating gas is sulfur hexafluoride.

[0022] Due to the adoption of the above technical scheme, sulfur hexafluoride has good insulation and arc extinguishing properties. Filling it in the cavity can effectively prevent electrical breakdown, improve the voltage resistance and safety of the device, and ensure the stable operation of the high-power microwave dual-drive source power synthesis device.

[0023] The present invention also adopts the following scheme: a high-power microwave dual-drive source power synthesis method, using a high-power microwave dual-drive source power synthesis device, specifically implemented in the following steps: Step 1, determining the power to be output by the voltage doubler switch; Step 2, check whether the pressure and concentration of the insulating gas in the cavity are within the normal range, obtain the insulating gas pressure value through the pressure monitoring device, and if the pressure is too low, add insulating gas to the specified pressure; Step 3, adjusting the position of the pulse pressure high voltage electrode by operating the adjustment rod of the gear reversing drive device according to the required power, specifically: rotating the adjustment rod to make the pulse pressure high voltage electrode point to the pulse pressure ground electrode displacement, changing the gap distance between the two; Step 4, monitor the output power of the voltage doubler switch in real time, and obtain accurate power values ​​through a power monitor; compare the actual output power with the expected power value, and if there is a deviation, further adjust the position of the pulse pressure high-voltage electrode, the output parameters of the pulse drive source, or the parameters of the insulating gas.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: The device of the present invention adopts two pulse drive sources and performs power synthesis through a voltage doubling switch, which effectively breaks through the limitation of power enhancement of a single drive source, can meet high-power demand scenarios such as long-range early warning radar, significantly improves the output power, and greatly increases the detection distance in radar applications. The collaborative work of the dual drive sources and the reasonable power synthesis method reduce the energy loss of the single drive source in the process of energy conversion and transmission, improve the overall energy conversion efficiency, reduce energy waste, and make the device more energy-efficient. The device has a variety of adjustment mechanisms, such as adjustable pulse pressure high-voltage electrode position, can flexibly adjust the electric field distribution and device electrical performance according to different working conditions, ensure the stability of output power and microwave signals, reduce fluctuations and interference, and the mobile device realizes the precise adjustment of the pulse pressure high-voltage electrode position through the cooperation of the gear commutator, the adjusting screw and the gear commutation drive device. The operator can flexibly change the electrode spacing according to actual needs, which improves the controllability and adaptability of the device. It has good application effects in multiple fields such as radar, communication, electronic countermeasures, industrial heating, etc., and can be flexibly adjusted according to the parameter requirements of high-power microwaves in different fields, with strong versatility and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a structural schematic diagram of a high-power microwave dual-drive source power synthesis device of the present invention; Figure 2 The present invention Figure 1 Cross-section view along the AA direction.

[0026] Markings in the figure: 1-pulse driving source, 2-voltage doubler switch, 3-pulse pressure high voltage electrode, 4-pulse pressure ground electrode, 5-adjusting screw, 6-adjusting connecting rod, 7-cavity, 8-support frame, 9-sealed adjustment cover, 10-adjusting rod, 11-gear commutator. 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 The present invention provides a high-power microwave dual-drive source power synthesis device, such as Figure 1 and Figure 2 As shown, including: Two pulse driving sources 1, used for providing pulse voltage; Voltage doubler switch 2, used to connect two pulse drive sources; By setting two pulse drive sources 1 to provide pulse voltage and connecting them with a voltage doubler switch 2, power synthesis of dual drive sources can be achieved; the movable pulse pressure high voltage electrode 3 and the pulse pressure ground electrode 4 in the cavity 7 are opposite and can be displaced, and combined with the insulating gas filled in the cavity 7, it is helpful to control the output of voltage at the appropriate time, avoid electrical breakdown and other problems, and ensure that the device can perform power synthesis safely and stably; The voltage doubler switch 2 comprises: A cavity 7, with input ports on both sides of the cavity 7, the input ports are respectively connected to two pulse drive sources 1, a movable pulse pressure high voltage electrode 3 is provided in the cavity 7, an output port is provided at one end of the cavity 7, a pulse pressure ground electrode 4 is provided at the output port, the pulse pressure high voltage electrode 3 is opposite to the pulse pressure ground electrode 4, the pulse pressure high voltage electrode 3 is provided in the cavity 7 through a moving device, and the moving device can drive the pulse pressure high voltage electrode 3 to move toward the pulse pressure ground electrode 4; The cavity 7 also includes a support frame 8 for supporting the pulse pressure high voltage electrode 3 . The pulse pressure high voltage electrode 3 and the support frame 8 are clearance-matched. The support frame 8 is used for guiding the displacement of the pulse pressure high voltage electrode 3 .

[0030] The moving device includes a gear commutator 11, which is located in the support frame 8. An adjusting screw 5 is threadedly connected below the pulse pressure high voltage electrode 3, and one end of the adjusting screw 5 away from the pulse pressure high voltage electrode 3 cooperates with the gear commutator 11; By driving the pulse pressure high voltage electrode 3 to move toward the pulse pressure ground electrode 4 through the mobile device, the distance between the pulse pressure high voltage electrode 3 and the pulse pressure ground electrode 4 can be flexibly adjusted, thereby changing the electric field distribution and the electrical performance of the device to adapt to different working needs and power synthesis requirements.

[0031] The gear reversing drive device is connected with the adjusting connecting rod 6 of the gear commutator and is used to drive the gear commutator 11. The gear reversing drive device includes an adjusting rod 10. One end of the adjusting rod 10 is coaxially connected with the adjusting connecting rod 6. The adjusting rod 10 is a non-metallic adjusting rod, and the other end of the adjusting rod 10 extends out of the cavity 7. The end of the adjusting rod 10 extending out of the cavity 7 is rotatably connected to the cavity 7 through a plane thrust bearing. A sealing adjusting cover 9 is also provided at the connection between the end of the adjusting rod 10 extending out of the cavity 7 and the cavity 7.

[0032] The cavity 7 is filled with insulating gas, which is sulfur hexafluoride.

[0033] The specific application process of this embodiment is as follows: In a long-range early warning radar system, high-power microwave signals are required to effectively detect distant targets. Traditional single-drive sources are difficult to meet such high power requirements, so this high-power microwave dual-drive source power synthesis device is used.

[0034] Specific implementation steps: Install the two pulse drive sources 1 at appropriate locations of the radar system and ensure that they are stably connected to the radar's power supply system to obtain sufficient power supply.

[0035] A dedicated connection line is used to reliably connect the pulse drive source 1 and the input port of the voltage multiplier switch 2 to ensure the stability of signal transmission.

[0036] The output port of the voltage multiplier switch 2 is connected to the transmitting antenna of the radar so that the synthesized high-power microwave signal can be effectively radiated.

[0037] Parameter setting and debugging: According to the working requirements of the radar system, set the output parameters of the pulse driving source 1; start the pulse driving source 1 and observe whether the output pulse voltage waveform and parameters meet the setting requirements; if there is a deviation, make fine adjustments through the adjustment device of the driving source.

[0038] The moving device of the pulse pressure high voltage electrode 3 is operated to adjust the distance between the pulse pressure high voltage electrode 3 and the pulse pressure ground electrode 4, and then the transmission power and signal quality are observed through the monitoring equipment of the radar system.

[0039] According to the monitoring results, the position of the pulse pressure high voltage electrode 3 is gradually adjusted. By rotating the adjusting rod 10, the adjusting rod 10 drives the adjusting connecting rod 6 to rotate, thereby driving the gear commutator 11 to work, and the gear commutator 11 drives the adjusting screw 5 to rotate. Since the adjusting screw and the pulse pressure high voltage electrode 3 are threadedly connected, and the pulse pressure high voltage electrode 3 and the support frame 8 are fitted with a gap, the pulse pressure high voltage electrode 3 will move along its specified direction while the adjusting screw 5 rotates, thereby adjusting the gap between the pulse pressure high voltage electrode 3 and the pulse pressure ground electrode 4, and observing the output data; During the operation of the radar system, the output power, pulse parameters, temperature and other key indicators of the device are monitored in real time. The pressure and purity of the insulating gas are checked at regular intervals. If the pressure drops below the specified value, sulfur hexafluoride gas is replenished in time.

[0040] Regularly inspect and maintain the various components of the device, such as checking whether the connecting lines are loose, whether the mobile device is operating normally, etc., to ensure the long-term and stable operation of the device.

[0041] By using this high-power microwave dual-drive source power synthesis device, the transmission power of the radar system is significantly improved, which can detect long-distance targets earlier and greatly improve the early warning capability. At the same time, the improvement of signal quality also improves the accuracy of target recognition.

[0042] 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.

[0043] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0044] 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 dual-drive source power synthesis device, characterized in that: The device comprises: Two pulse driving sources for providing pulse voltage; A voltage doubler switch, used to connect two pulse drive sources; The voltage doubler switch comprises: The cavity has input ports on both sides, the input ports are respectively connected to two pulse drive sources, a movable pulse pressure high-voltage electrode is arranged in the cavity, an output port is arranged at one end of the cavity, the output port is provided with a pulse pressure ground electrode, the pulse pressure high-voltage electrode is opposite to the pulse pressure ground electrode, and the pulse pressure high-voltage electrode can point to the pulse pressure ground electrode displacement; the cavity is filled with insulating gas.

2. The high-power microwave dual-drive source power synthesis device according to claim 1, characterized in that: The pulse pressure high voltage electrode is arranged in the cavity through a moving device, and the moving device can drive the pulse pressure high voltage electrode to move toward the pulse pressure ground electrode.

3. The high-power microwave dual-drive source power synthesis device according to claim 2, characterized in that: The cavity also includes a support frame for supporting the pulse pressure high voltage electrode. The pulse pressure high voltage electrode is in clearance fit with the support frame, and the support frame is used for displacement guidance of the pulse pressure high voltage electrode.

4. The high-power microwave dual-drive source power synthesis device according to claim 2 or 3, characterized in that: The mobile device comprises: A gear commutator, wherein the gear commutator is located in the support frame, an adjusting screw is threadedly connected below the pulse pressure high voltage electrode, and one end of the adjusting screw away from the pulse pressure high voltage electrode is cooperatively connected with the gear commutator; A gear reversing driving device is connected with the adjusting connecting rod of the gear commutator and is used for driving the gear commutator.

5. The high-power microwave dual-drive source power synthesis device according to claim 4, characterized in that: The gear reversing drive device comprises: An adjusting rod, wherein the adjusting rod is coaxially connected to an adjusting connecting rod of a gear commutator, the adjusting rod is a non-metallic adjusting rod, and one end of the adjusting rod away from the gear commutator extends out of a cavity, and one end of the adjusting rod extending out of the cavity is rotationally connected to the cavity through a planar thrust bearing.

6. The high-power microwave dual-drive source power synthesis device according to claim 5, characterized in that: A sealing adjustment cover is also provided at the connection between one end of the adjustment rod extending out of the cavity and the cavity.

7. The high-power microwave dual-drive source power synthesis device according to claim 1, characterized in that: The insulating gas is sulfur hexafluoride.

8. A high-power microwave dual-drive source power synthesis method, using the high-power microwave dual-drive source power synthesis device according to any one of claims 1 to 7, characterized in that: Please follow the steps below to implement: Step 1, determining the power to be output by the voltage doubler switch; Step 2, check whether the pressure and concentration of the insulating gas in the cavity are within the normal range, obtain the insulating gas pressure value through the pressure monitoring device, and if the pressure is too low, add insulating gas to the specified pressure; Step 3, adjusting the position of the pulse pressure high voltage electrode by operating the adjustment rod of the gear reversing drive device according to the required power, specifically: rotating the adjustment rod to make the pulse pressure high voltage electrode point to the pulse pressure ground electrode displacement, changing the gap distance between the two; Step 4, monitor the output power of the voltage doubler switch in real time, and obtain accurate power values ​​through a power monitor; compare the actual output power with the expected power value, and if there is a deviation, further adjust the position of the pulse pressure high-voltage electrode, the output parameters of the pulse drive source, or the parameters of the insulating gas.

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