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

Abstract

The present invention discloses a high-power microwave dual-drive source power combining device and method, which relates to the field of high-power microwave conduction. There are two pulse drive sources, and a voltage-doubling switch is used to connect the two pulse drive sources. The voltage-doubling switch includes a cavity. The two sides of the cavity are input ports, and the input ports are respectively connected to the two pulse drive sources. A movable pulse voltage high-voltage electrode is provided in the cavity. An output port is provided at one end of the cavity, and a pulse voltage ground electrode is provided at the output port. The pulse voltage high-voltage electrode is opposite to the pulse voltage ground electrode, and the pulse voltage high-voltage electrode can be displaced towards the pulse voltage ground electrode. The cavity is filled with an insulating gas. The device provided by the present invention has a relatively small overall mass and volume, low power loss, and the power combining method is simple to operate. Moreover, through the adjustable electrode gap, arbitrary adjustment of the power can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of high-power microwave conduction, and specifically to a high-power microwave dual-drive source power synthesis device.

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

[0003] High Power Microwave (HPM) technology, as a key technology in the field of modern electronic science and engineering, has demonstrated extremely important application value in many fields such as radar, communication, and electronic countermeasures. With the rapid development of technology, the demand for high-power microwaves in various fields is increasing day by day. There are not only higher requirements for output power, but also more stringent standards for the stability, reliability, and efficiency of microwave sources.

[0004] Traditional high-power microwave sources usually adopt a single-drive source mode. However, this mode has many limitations. In terms of power improvement, the power output of a single-drive source has a theoretical upper limit. When attempting to further increase the power, a series of technical bottlenecks will be faced, such as difficulties in electron beam focusing, saturation of cathode emission current density, and internal electric field breakdown of devices. This makes 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 range and higher target resolution, extremely high transmission power is required, and a single-drive source is difficult to reach such a high power level.

[0005] In terms of efficiency, a single-drive source will generate relatively large energy losses during the energy conversion and transmission processes. 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 a relatively low overall energy conversion efficiency. This not only causes waste of energy, but also makes the device generate excessive heat, requiring an additional heat dissipation system to maintain the 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 be able to work properly, which is unacceptable in some applications with extremely high requirements for system reliability. For example, in the field of electronic countermeasures, if the high-power microwave system fails due to a single-drive source failure, it may lead to the failure of the mission, bringing adverse consequences.

[0007] In order to break through these limitations of a single-drive source, the dual-drive source power synthesis technology has emerged. By synthesizing the powers of two pulsed drive sources, the output power can be effectively increased, overcoming the bottleneck of power improvement of a single-drive source. However, the current dual-drive source power synthesis technology also faces many challenges in practical applications.

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

[0009] In addition, when the existing voltage multiplier switch structure connects two pulsed drive sources, there is a problem of insufficient electrical insulation performance. Under high-voltage and high-power working conditions, electrical breakdown is likely to occur, which not only damages the equipment but also affects the normal operation of the system. Moreover, for the adjustment of the distance between the pulse voltage high-voltage electrode and the pulse voltage ground electrode inside the voltage multiplier switch, there is a lack of effective and precise control means, making it difficult to flexibly adjust according to different working requirements and conditions, thus limiting the performance and application range of the device. Summary of the Invention

[0010] The purpose of the present invention is to: in view of the above problems, the present invention provides a high-power microwave dual-drive source power combining device. Through two pulsed drive sources, ordinary commercial power is converted into large pulsed voltages with high voltage and low current by a Tesla transformer. Two groups of pulsed drive sources share a set of voltage multiplier switches. When the voltage reaches a specific value, the voltage multiplier switch automatically conducts and propagates to the voltage multiplier line assembly. The high-voltage pulses are repeatedly superimposed and increased inside the voltage multiplier 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. This device solves the problem of synchronous synthesis triggering of two sources.

[0011] The technical solution adopted by the present invention is as follows:

[0012] A high-power microwave dual-drive source power combining device, the device includes:

[0013] Two pulsed drive sources, used to provide pulsed voltages;

[0014] A voltage multiplier switch, used to connect two pulsed drive sources;

[0015] The voltage multiplier switch includes:

[0016] A cavity, with input ports on both sides of the cavity. The input ports are respectively connected to two pulsed drive sources. A movable pulse voltage high-voltage electrode is provided inside the cavity. An output port is provided at one end of the cavity, and a pulse voltage ground electrode is provided at the output port. The pulse voltage high-voltage electrode is opposite to the pulse voltage ground electrode, and the pulse voltage high-voltage electrode can be displaced towards the pulse voltage ground electrode; the cavity is filled with insulating gas.

[0017] Furthermore, the pulse voltage high-voltage electrode is arranged inside the cavity through a moving device, and the moving device can drive the pulse voltage high-voltage electrode to be displaced towards the pulse voltage ground electrode.

[0018] Further, a support frame for supporting the pulse pressure high-voltage electrode is further included in the cavity. The pulse pressure high-voltage electrode is in clearance fit with the support frame, and the support frame is used for displacement guiding of the pulse pressure high-voltage electrode.

[0019] Due to the adoption of the above technical solution, the setting of the support frame provides support and displacement guiding for the pulse pressure high-voltage electrode, ensuring that the pulse pressure high-voltage electrode maintains a stable movement trajectory during movement, avoiding shaking or deviation, and guaranteeing the reliability and stability of the device.

[0020] Further, the moving device includes:

[0021] A gear commutator, which is located inside 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 engaged with the gear commutator;

[0022] A gear commutation driving device, which is connected to the adjusting link of the gear commutator in a cooperative manner and is used for driving the gear commutator.

[0023] Due to the adoption of the above technical solution, by using the cooperation of the gear commutator and the adjusting screw, and the gear commutation driving device driving the gear commutator, the movement of the driving device can be converted into the linear displacement of the pulse pressure high-voltage electrode, realizing the precise adjustment of the position of the pulse pressure high-voltage electrode and improving the control precision of the device.

[0024] Further, the gear commutation driving device includes:

[0025] An adjusting rod, which is coaxially connected to the adjusting link of the 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 the cavity. The end of the adjusting rod extending out of the cavity is rotatably connected to the cavity through a planar thrust bearing.

[0026] Due to the adoption of the above technical solution, the use of the non-metallic adjusting rod can avoid problems such as conduction in a high-voltage environment, ensuring the safety of the device; the adjusting rod is rotatably connected to the cavity through a planar thrust bearing, facilitating the operator to operate the gear commutation driving device outside the cavity to realize the adjustment of the position of the pulse pressure high-voltage electrode.

[0027] Further, a sealing adjusting cover is also provided at the connection between the end of the adjusting rod extending out of the cavity and the cavity.

[0028] Due to the adoption of the above technical solution, the setting of the sealing adjusting cover can prevent the leakage of the insulating gas in the cavity, and at the same time can also prevent external dust, moisture, etc. from entering the cavity, ensuring the environmental stability in the cavity and improving the reliability and service life of the device.

[0029] Further, the insulating gas is sulfur hexafluoride.

[0030] Due to the adoption of the above technical solution, sulfur hexafluoride has good insulation performance and arc extinguishing performance. Filling it in the cavity can effectively prevent electrical breakdown, improve the voltage withstand capacity and safety of the device, and ensure the stable operation of the high-power microwave dual-drive source power synthesis device.

[0031] The present invention also adopts the following solution: a high-power microwave dual-drive source power synthesis method, which uses a high-power microwave dual-drive source power synthesis device and is specifically implemented according to the following steps:

[0032] Step 1, determine the power to be output by the voltage multiplier switch;

[0033] 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. If the pressure is too low, supplement the insulating gas to the specified pressure;

[0034] Step 3, adjust the position of the pulse voltage high-voltage electrode according to the required power by operating the adjusting rod of the gear commutation drive device. Specifically: rotate the adjusting rod to make the pulse voltage high-voltage electrode point to the displacement of the pulse voltage ground electrode and change the gap distance between the two;

[0035] Step 4, monitor the output power of the voltage multiplier switch in real time and obtain the accurate power value through the power monitor; compare the actual output power with the expected power value. If there is a deviation, further adjust the position of the pulse voltage high-voltage electrode, the output parameters of the pulse drive source or the parameters of the insulating gas.

[0036] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0037] The device of the present invention uses two pulse drive sources and performs power synthesis through a voltage multiplier switch, effectively breaking through the limitation of power improvement of a single drive source, meeting high-power demand scenarios such as long-range early warning radars, significantly increasing the output power, and greatly increasing the detection range in radar applications. The collaborative work of the two drive sources and the reasonable power synthesis method reduce the energy loss of a single drive source during energy conversion and transmission, improve the overall energy conversion efficiency, reduce energy waste, make the device operation more energy-efficient. The device has a variety of adjustment mechanisms, such as the position of the pulse compression high-voltage electrode can be adjusted, and it can flexibly adjust the electric field distribution and the electrical performance of the device according to different working conditions to ensure the stability of the output power and microwave signal, reduce fluctuations and interference. The mobile device realizes precise adjustment of the position of the pulse compression high-voltage electrode through the cooperation of a gear commutator, an adjustment screw, and a gear commutation drive device. The operator can flexibly change the electrode spacing according to actual needs, improving the controllability and adaptability of the device. It has good application effects in multiple fields such as radar, communication, electronic countermeasure, and industrial heating, 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

[0038] Figure 1 is a schematic structural diagram of the high-power microwave dual-drive source power synthesis device of the present invention;

[0039] Figure 2 is the present invention Figure 1 The sectional view taken along the line A-A in.

[0040] Reference numerals in the figures: 1 - pulse drive source, 2 - voltage multiplier switch, 3 - pulse compression high-voltage electrode, 4 - pulse compression ground electrode, 5 - adjustment screw, 6 - adjustment link, 7 - cavity, 8 - support frame, 9 - sealed adjustment cover, 10 - adjustment rod, 11 - gear commutator. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The present invention will be described in detail below with reference to the accompanying drawings.

[0042] 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.

[0043] Embodiment

[0044] The present invention provides a high-power microwave dual-drive source power synthesis device, as Figure 1 and Figure 2 shown, including:

[0045] Two pulse drive sources 1 for providing pulse voltage;

[0046] The voltage multiplier switch 2 is used to connect two pulse drive sources;

[0047] By setting two pulse drive sources 1 to provide pulse voltages and using the voltage multiplier switch 2 to connect them, the power synthesis of the dual drive sources can be achieved; the movable pulse voltage high-voltage electrode 3 and the pulse voltage ground electrode 4 in the cavity 7 are opposite to each other and can be displaced. Combined with the insulating gas filled in the cavity 7, it helps to control the voltage output at the appropriate time, avoid problems such as electrical breakdown, and ensure the safe and stable power synthesis of the device;

[0048] The voltage multiplier switch 2 includes:

[0049] The cavity 7 has input ports on both sides. The input ports are respectively connected to two pulse drive sources 1. A movable pulse voltage high-voltage electrode 3 is provided in the cavity 7. An output port is provided at one end of the cavity 7. A pulse voltage ground electrode 4 is provided at the output port. The pulse voltage high-voltage electrode 3 is opposite to the pulse voltage ground electrode 4. The pulse voltage high-voltage electrode 3 is arranged in the cavity 7 through a moving device, and the moving device can drive the pulse voltage high-voltage electrode 3 to displace towards the pulse voltage ground electrode 4;

[0050] The cavity 7 further includes a support frame 8 for supporting the pulse voltage high-voltage electrode 3. The pulse voltage high-voltage electrode 3 is in clearance fit with the support frame 8, and the support frame 8 is used for the displacement guidance of the pulse voltage high-voltage electrode 3.

[0051] The moving device includes a gear commutator 11. The gear commutator 11 is located inside the support frame 8. An adjusting screw rod 5 is threadedly connected below the pulse voltage high-voltage electrode 3. One end of the adjusting screw rod 5 away from the pulse voltage high-voltage electrode 3 is engaged with the gear commutator 11;

[0052] By driving the pulse voltage high-voltage electrode 3 to displace towards the pulse voltage ground electrode 4 through the moving device, the distance between the pulse voltage high-voltage electrode 3 and the pulse voltage ground electrode 4 can be flexibly adjusted, thereby changing the electric field distribution and the electrical performance of the device to meet different working requirements and power synthesis requirements.

[0053] The gear commutation drive device is connected to the adjusting link 6 of the gear commutator for driving the gear commutator 11. The gear commutation drive device includes an adjusting rod 10. One end of the adjusting rod 10 is coaxially connected to the adjusting link 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 flat 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.

[0054] The cavity 7 is filled with an insulating gas, and the insulating gas is sulfur hexafluoride.

[0055] The specific application process of this embodiment is as follows:

[0056] In a long-range early warning radar system, high-power microwave signals are required to effectively detect targets at long distances. Traditional single drive sources are difficult to meet such high power requirements, so this high-power microwave dual drive source power synthesis device is adopted.

[0057] Specific implementation steps:

[0058] Install two pulse drive sources 1 at appropriate positions in the radar system to ensure their stable connection to the radar's power supply system to obtain sufficient power supply.

[0059] Use a dedicated connection line to reliably connect the pulse drive source 1 to the input port of the voltage multiplier switch 2 to ensure the stability of signal transmission.

[0060] Connect the output port of the voltage multiplier switch 2 to the radar's transmitting antenna so that the synthesized high-power microwave signal can be effectively radiated.

[0061] Parameter setting and debugging:

[0062] According to the working requirements of the radar system, set the output parameters of the pulse drive source 1; start the pulse drive source 1 and observe whether the output pulse voltage waveform and parameters meet the set requirements; if there are deviations, make fine adjustments through the adjustment device of the drive source.

[0063] Operate the moving device of the pulse compression high-voltage electrode 3 to adjust the distance between the pulse compression high-voltage electrode 3 and the pulse compression ground electrode 4, and then observe the transmitting power and signal quality through the monitoring equipment of the radar system.

[0064] According to the monitoring results, gradually adjust the position of the pulse compression high-voltage electrode 3. 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. The gear commutator 11 drives the adjusting screw 5 to rotate. Since the adjusting screw is threadedly connected to the pulse compression high-voltage electrode 3 and the pulse compression high-voltage electrode 3 is in a fitting clearance with the support frame 8, the pulse compression high-voltage electrode 3 will displace in its specified direction while the adjusting screw 5 rotates, thereby adjusting the gap between the pulse compression high-voltage electrode 3 and the pulse compression ground electrode 4, and observing the output data;

[0065] During the operation of the radar system, real-time monitor key indicators such as the output power, pulse parameters, and temperature of the device. Check the pressure and purity of the insulating gas at regular intervals. If the pressure drops below the specified value, replenish sulfur hexafluoride gas in a timely manner.

[0066] Regularly inspect and maintain each component of the device, such as checking whether the connection lines are loose and whether the moving device is operating normally, to ensure the long-term stable operation of the device.

[0067] By using the high-power microwave dual-drive source power synthesis device of the present invention, the transmission power of the radar system is significantly improved, enabling the detection of distant targets earlier and greatly enhancing the early warning ability. At the same time, the improvement of the signal quality also improves the accuracy of target recognition.

[0068] In this article, specific embodiments are used to elaborate on the principles and implementation methods of the present invention. The descriptions of the above embodiments are only used to help understand the method of the present invention and its core idea. It should be noted that for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0069] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", 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 to the present invention.

[0070] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "couple" 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 situations.

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: A cavity, wherein both sides of the cavity are input ports, and the input ports are respectively connected to two pulse drive sources. A movable pulse pressure high-voltage electrode is arranged in the cavity, and an output port is arranged at one end of the cavity, and 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 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. The cavity also includes a support frame for supporting the pulse pressure high-voltage electrode, and the pulse pressure high-voltage electrode is gap-matched with the support frame, and the support frame is used for displacement guidance of the pulse pressure high-voltage electrode; the cavity is filled with insulating gas; 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.

2. The high-power microwave dual-drive source power synthesis device according to claim 1, 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.

3. The high-power microwave dual-drive source power synthesis device according to claim 2, 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.

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

5. 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 4, 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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