CN107907810B - Parallel plate electrode electromagnetic field irradiation discharge system with adjustable vacuum degree - Google Patents
Parallel plate electrode electromagnetic field irradiation discharge system with adjustable vacuum degree Download PDFInfo
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- CN107907810B CN107907810B CN201711068968.8A CN201711068968A CN107907810B CN 107907810 B CN107907810 B CN 107907810B CN 201711068968 A CN201711068968 A CN 201711068968A CN 107907810 B CN107907810 B CN 107907810B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/16—Construction of testing vessels; Electrodes therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
Abstract
The invention provides a parallel plate electrode electromagnetic field irradiation discharge system with adjustable vacuum degree, which comprises an electromagnetic field irradiation device, a parallel plate discharge device, a vacuum environment simulation device and a detection device, wherein the electromagnetic field irradiation device is used for irradiating a parallel plate electrode; the electromagnetic field irradiation device is arranged outside the vacuum environment simulation device and can simulate the irradiation condition of an external complex electromagnetic environment, the parallel plate discharge device can simulate the discharge condition of different parallel plates in an actual environment, the vacuum environment simulation device improves the repeatability of experiments, and the parallel plate discharge system under the electromagnetic field irradiation induced vacuum environment is formed by combining with a detection system. The system is used for researching the relevant technology of electromagnetic radiation emission, the influence of electromagnetic radiation on the induction parallel plate discharge system and the like, and provides accurate data for the protective equipment, thereby reducing the potential safety hazard of the railway system.
Description
Technical Field
The invention relates to the technical field of radiation emission and interference, in particular to a parallel plate electrode electromagnetic field irradiation discharge system with adjustable vacuum degree.
Background
The research on parallel plate discharge currently focuses on both numerical calculation and pulse voltage application experiments in China.
China has the rapid development of railways, the railway line is four-way and eight-reach, the train line is longer and more complex, and the train can pass through a plurality of regions and provinces and cities. The topographic features of each region are different, and the geographical environment and the elevation of each province and city are also different. Therefore, it is not uncommon that one train travels to cover areas with different altitudes.
In addition, the current electromagnetic environment is increasingly complex, the integrated circuit integration level is very high, and gas discharge occurs frequently.
When a train passes through different altitudes (different vacuum environments), the condition that the parallel plate discharge of the parallel plate is induced by the external complex electromagnetic environment is complex, and hidden dangers exist in the railway safety problem.
Disclosure of Invention
In order to solve the technical problems, the invention provides a parallel plate electrode electromagnetic field irradiation discharge system with adjustable vacuum degree, which can be used for researching the relevant technology of electromagnetic radiation emission, the influence of electromagnetic radiation on the induction of the parallel plate discharge system and the like, and provides accurate data for better protection equipment.
The invention provides a parallel plate electrode electromagnetic field irradiation discharge system with adjustable vacuum degree, which comprises an electromagnetic field irradiation device, a parallel plate discharge device, a vacuum environment simulation device and a detection device, wherein the electromagnetic field irradiation device is used for irradiating a parallel plate electrode;
the electromagnetic field irradiation device is arranged outside the vacuum environment simulation device and is used for simulating the irradiation condition of the external complex electromagnetic environment;
the parallel plate discharge device is connected with the vacuum environment simulation device and is used for simulating the discharge condition of different parallel plates in the actual environment; the vacuum environment simulation device is used for simulating vacuum conditions at different altitudes;
the detection device is connected with the parallel plate discharge device and is used for detecting the discharge waveform of the parallel plate discharge device.
Optionally, the parallel plate discharging device includes a parallel plate module and a power supply module;
the vacuum environment simulation device comprises a vacuum environment simulation cavity and a vacuum environment control module, wherein the vacuum environment simulation cavity is provided with a vacuumizing port and a vacuum electrode interface, and the vacuum electrode interface comprises a first vacuum electrode interface and a second vacuum electrode interface; the vacuum environment control module is connected with the vacuum environment simulation cavity through the vacuumizing port;
the parallel plate module is arranged in the vacuum environment simulation cavity and comprises a first electrode plate and a second electrode plate, and the wiring of the first electrode plate is led out from the first vacuum electrode interface and is connected with the positive electrode of the power supply module; the second electrode plate wiring is led out from the second vacuum electrode interface and is connected with the negative electrode of the power supply module;
the detection device is connected to a circuit between the second vacuum electrode interface and the negative electrode of the power supply module;
the electromagnetic field irradiation device is arranged outside the vacuum environment simulation cavity.
Optionally, the parallel plate discharge device further includes a current limiting resistor, and the current limiting resistor is connected in series in a circuit between the first vacuum electrode interface and the positive electrode of the power module, or in a circuit between the second vacuum electrode interface and the detection device.
Optionally, the parallel plate module further includes a supporting dielectric plate, the supporting dielectric plate is located in the vacuum environment simulation cavity and is used for supporting the first electrode plate and the second electrode plate, and the supporting dielectric plate is made of an insulating material.
Optionally, the detection device includes an oscilloscope and a current probe unit;
the current probe unit is connected in a circuit between the second vacuum electrode interface and the negative electrode of the power supply module;
the oscilloscope is connected with the current probe unit.
Optionally, the electromagnetic field irradiation device includes a signal generator, a power amplifier, and a transmitting antenna, and the signal generator, the power amplifier, and the transmitting antenna are sequentially connected by a coaxial cable.
Optionally, the vacuum environment simulation cavity is a vacuum glass tube, a first port of the vacuum glass tube is sealed and fixed, and a second port of the vacuum glass tube is detachable.
Optionally, the vacuum environment control module includes a vacuum pump, an electromagnetic valve and a pressure regulating unit;
the vacuum pump is connected with a first end of the electromagnetic valve, a second end of the electromagnetic valve is connected with an inlet of the pressure regulating unit, and an outlet of the pressure regulating unit is connected with the vacuumizing port;
the electromagnetic valve, the pressure regulating unit and the vacuumizing port are connected in a vacuum mode through a vacuum leather hose.
Optionally, the pressure regulating unit comprises a resistance vacuum gauge, a vacuum baffle valve, a four-way buffer tank and an inflation pressure regulating component; the four-way buffer tank is characterized in that a first port of the four-way buffer tank is an inlet of the pressure regulating unit and is connected with a second end of the electromagnetic valve, a second port of the four-way buffer tank is connected with the resistance vacuum gauge, a third port of the four-way buffer tank is connected with the inflation pressure regulating component, a fourth port of the four-way buffer tank is connected with one end of the vacuum baffle valve, and the other end of the vacuum baffle valve is an outlet of the pressure regulating unit and is connected with the vacuumizing port.
Optionally, the inflation pressure regulating component comprises an inflation valve and an inflation pump, and the inflation pump is connected with the third port of the four-way buffer tank through the inflation valve.
Compared with the prior art, the invention has the technical effects that:
the invention provides a parallel plate electrode electromagnetic field irradiation discharge system with adjustable vacuum degree, which comprises an electromagnetic field irradiation device, a parallel plate discharge device, a vacuum environment simulation device and a detection device, wherein the electromagnetic field irradiation device is used for irradiating a parallel plate electrode;
the electromagnetic field irradiation device is arranged outside the vacuum environment simulation device and can simulate the irradiation condition of an external complex electromagnetic environment, the parallel plate discharge device can simulate the discharge condition of different parallel plates in an actual environment, the vacuum environment simulation device improves the repeatability of experiments, and the parallel plate discharge system under the electromagnetic field irradiation induced vacuum environment is formed by combining with a detection system.
The system is used for researching the relevant technology of electromagnetic radiation emission, the influence of electromagnetic radiation on the induction parallel plate discharge system and the like, and provides accurate data for the protective equipment, thereby reducing the potential safety hazard of the railway system.
Specifically, the parallel plate discharging device comprises a parallel plate module and a power supply module;
the vacuum environment simulation device comprises a vacuum environment simulation cavity and a vacuum environment control module, wherein the vacuum environment simulation cavity is provided with a vacuumizing port and a vacuum electrode interface, and the vacuum electrode interface comprises a first vacuum electrode interface and a second vacuum electrode interface; the vacuum environment control module is connected with the vacuum environment simulation cavity through the vacuumizing port;
the parallel plate module is arranged in the vacuum environment simulation cavity and comprises a first electrode plate and a second electrode plate, and the wiring of the first electrode plate is led out from the first vacuum electrode interface and is connected with the positive electrode of the power supply module; the second electrode plate wiring is led out from the second vacuum electrode interface and is connected with the negative electrode of the power supply module;
the detection device is connected to a circuit between the second vacuum electrode interface and the negative electrode of the power supply module;
the electromagnetic field irradiation device is arranged outside the vacuum environment simulation cavity.
The parallel plate discharging device comprises a parallel plate module and a power supply module, wherein the power supply module supplies power to the parallel plate module; the vacuum environment simulation device comprises a vacuum environment simulation cavity and a vacuum environment control module, wherein the vacuum environment control module is used for controlling the vacuum environment in the vacuum environment simulation cavity.
The vacuum environment simulation cavity is provided with a vacuumizing port, and the vacuum environment control module is connected with the vacuum environment simulation cavity through the vacuumizing port so as to control the air pressure in the cavity.
In order to facilitate the connection of the parallel plates and the power module, the vacuum environment simulation cavity is provided with two vacuum electrode interfaces: the parallel plate module is arranged in the vacuum environment simulation cavity and comprises a first electrode plate and a second electrode plate, and a first electrode plate wiring is led out from the first vacuum electrode interface and is connected with the positive electrode of the power supply module; the second electrode plate wiring is led out from the second vacuum electrode interface and is connected with the negative electrode of the power supply module;
the vacuum environment simulation cavity is used for closing the parallel plate discharge module, and can simulate different altitude conditions in a real environment by changing the air pressure value of the environment where the parallel plate discharge system is located.
The detection device is connected to a circuit between the second vacuum electrode interface and the negative electrode of the power supply module; the detection device is used for detecting the discharge condition of the parallel plate discharge system under the condition of an external electromagnetic field.
The parallel plate electrode electromagnetic field irradiation discharge system with adjustable vacuum degree can measure the influence of electromagnetic irradiation interference with different frequencies and intensities on the discharge breakdown voltage and the discharge waveform of parallel plates induced under different gaps, waveforms, air pressures and parallel plate materials.
In addition, the parallel plate discharge device can be also provided with a current-limiting resistor, and the current-limiting resistor can be connected in series in a circuit between the first vacuum electrode interface and the positive electrode of the power supply module or in a circuit between the second vacuum electrode interface and the detection device. The current-limiting resistor protects the measuring device from being damaged by the sudden discharge signal, protects the safety of the system and prolongs the service life of the system.
Wherein, vacuum environment simulation chamber can be the vacuum glass pipe, for guaranteeing vacuum environment leakproofness, is convenient for change the parameter of parallel plate simultaneously, and its first port can be sealed non-detachable, and the second port can set up to detachable.
The system is applied to the aspect of combining electromagnetic environment testing and gas discharge, and plays a certain reference role in guaranteeing the railway safety problem.
The whole system has the following characteristics:
1) the influence of electromagnetic interference with different frequencies and different intensities on the induction of the parallel plate discharge breakdown voltage and the discharge waveform can be measured;
2) the influence of the discharge breakdown voltage and the discharge waveform of the parallel plates induced by different gaps under certain electromagnetic interference intensity can be measured;
3) the device can measure the condition of the parallel plate discharge breakdown voltage and the influence of the discharge waveform induced under different air pressures under certain electromagnetic interference intensity;
4) the influence of different parallel plate materials under different air pressures under certain electromagnetic interference intensity on the discharge breakdown voltage and the discharge waveform of the parallel plate can be measured;
5) the influence of different parallel plate sizes on breakdown discharge and discharge waveforms under certain electromagnetic interference can be measured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic diagram of an embodiment of an electromagnetic field irradiation discharge system with parallel plate electrodes capable of adjusting vacuum degree according to the present invention;
FIG. 2 is a schematic diagram of a fifth embodiment of an electromagnetic field irradiation discharge system with parallel plate electrodes capable of adjusting vacuum degree.
Wherein the correspondence between reference numerals and part names in fig. 1 and 2 is as follows:
1 an electromagnetic field irradiation apparatus for irradiating an electromagnetic field,
11 a signal generator for generating a signal in a time-division manner,
12 a power amplifier,
13 a transmitting antenna for the transmission of the electromagnetic wave,
2 a parallel-plate discharge device, wherein,
21 parallel plate module of the parallel plate module,
211 a first electrode plate for a first electrode,
212 a second electrode plate is provided on the first electrode plate,
213 support a dielectric plate which is provided with a dielectric plate,
22 a power supply module for supplying power to the mobile phone,
a current-limiting resistor 23 for limiting the current,
3 a vacuum environment simulation device,
31 a vacuum environment simulating a cavity, wherein,
311 is provided with a vacuum-pumping port,
312 a first vacuum electrode interface 312,
313 a second vacuum electrode interface, wherein the second vacuum electrode interface,
314 a first port of the first port, and a second port of the second port,
315 of the second port of the first port,
32 a vacuum environment control module for controlling the vacuum environment,
33 a vacuum pump, and a vacuum pump,
a 34 electromagnetic valve is arranged on the base plate,
341 the first end of the electromagnetic valve is provided,
342 at the second end of the solenoid valve,
a voltage-regulating unit (35) for regulating the voltage,
351 at the inlet of the pressure regulating unit,
352 the outlet of the pressure regulating unit,
a 36-resistance vacuum gauge is arranged on the vacuum gauge,
37 the vacuum flapper valve is then actuated,
a 38 four-way buffer tank is arranged on the upper portion of the shell,
the 382 four-way buffer tank has a second port,
383 the third port of the four-way buffer tank,
the 384 four-way buffer tank has a fourth port,
39 an inflation pressure-regulating member for inflating the bag,
4, a detection device.
Detailed Description
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of an embodiment of an electromagnetic field irradiation discharge system with parallel plate electrodes capable of adjusting vacuum degree according to the present invention;
FIG. 2 is a schematic diagram of a fifth embodiment of an electromagnetic field irradiation discharge system with parallel plate electrodes capable of adjusting vacuum degree.
Referring to fig. 1, the present invention provides a parallel plate electrode electromagnetic field irradiation discharge system with adjustable vacuum degree, which in one specific embodiment comprises an electromagnetic field irradiation device 1, a parallel plate discharge device 2, a vacuum environment simulation device 3 and a detection device 4;
the electromagnetic field irradiation device 1 is arranged outside the vacuum environment simulation device 3 and is used for simulating the irradiation condition of an external complex electromagnetic environment, the parallel plate discharge device 2 is connected with the vacuum environment simulation device 3, the parallel plate discharge device 2 is used for simulating the discharge condition of different parallel plates in an actual environment, and the vacuum environment simulation device 3 is used for simulating the vacuum condition at different altitudes; the detection device 4 is connected with the parallel plate discharge device 2 and is used for detecting the discharge waveform of the parallel plate discharge device 2.
The vacuum environment simulation device 3 improves the repeatability of the experiment, and combines with a detection device to form a parallel plate discharge system under the electromagnetic field irradiation induced vacuum environment. The system is used for researching the relevant technology of electromagnetic radiation emission, the influence of electromagnetic radiation on the induction parallel plate discharge system and the like, and provides accurate data for the protective equipment, thereby reducing the potential safety hazard of the railway system.
In another specific embodiment, the parallel plate discharge apparatus 2 includes a parallel plate module 21 and a power supply module 22;
the vacuum environment simulation device 3 comprises a vacuum environment simulation cavity and a vacuum environment control module 32, wherein the vacuum environment simulation cavity is provided with a vacuumizing port 311 and a vacuum electrode interface, and the vacuum electrode interface comprises a first vacuum electrode interface 312 and a second vacuum electrode interface 313; the vacuum environment control module 32 is connected with the vacuum environment simulation cavity through a vacuumizing port 311;
the parallel plate module 21 is arranged in the vacuum environment simulation cavity, the parallel plate module 21 comprises a first electrode plate 211 and a second electrode plate 212, and the wiring of the first electrode plate 211 is led out from a first vacuum electrode interface 312 and is connected with the positive electrode of the power supply module 22; the second electrode plate 212 is connected with the negative electrode of the power module 22 through a wire led out from the second vacuum electrode interface 313;
the detection device 4 is connected to the circuit between the second vacuum electrode interface and the negative electrode 22 of the power supply module;
the electromagnetic field irradiation device 1 is arranged outside the vacuum environment simulation cavity.
The parallel plate discharging device 2 comprises a parallel plate module 21 and a power supply module 22, wherein the power supply module 22 supplies power to the parallel plate module 21; the vacuum environment simulation apparatus 3 comprises a vacuum environment simulation chamber and a vacuum environment control module 32, and the vacuum environment control module 32 is used for controlling the vacuum environment in the vacuum environment simulation chamber.
The vacuum environment simulation cavity is provided with a vacuumizing port 311, and the vacuum environment control module 32 is connected with the vacuum environment simulation cavity through the vacuumizing port 311 so as to control the air pressure in the cavity.
To facilitate the connection of the parallel plates to the power module 22, the vacuum environment simulation chamber is provided with two vacuum electrode interfaces: the parallel plate module 21 is arranged in the vacuum environment simulation cavity, the parallel plate module 21 comprises a first electrode plate 211 and a second electrode plate 212, and the wiring of the first electrode plate 211 is led out from the first vacuum electrode interface 312 and is connected with the positive electrode of the power supply module 22; the second electrode plate 212 is connected with the negative electrode of the power module 22 through a wire led out from the second vacuum electrode interface 313;
the vacuum environment simulation cavity is used for closing the parallel plate discharge module, and can simulate different altitude conditions in a real environment by changing the air pressure value of the environment where the parallel plate discharge system is located.
The power module 22 employs a dc regulated power supply, which provides a stable voltage source for the parallel plate discharging device 2, and can be manually adjusted to provide a required base voltage for the parallel plate discharging device 2.
The detection device 4 may be connected to an electrical circuit between the second vacuum electrode interface 313 and the negative electrode of the power module 22. The detection device 4 is used for detecting the discharge condition of the discharge system under the condition of externally applied electromagnetic field.
The parallel plate electrode electromagnetic field irradiation discharge system with adjustable vacuum degree can measure the influence of electromagnetic irradiation interference with different frequencies and intensities on the discharge breakdown voltage and the discharge waveform of parallel plates induced under different gaps, waveforms, air pressures and parallel plate materials.
In addition, the parallel plate discharge device 2 may further include a current limiting resistor 23, and the current limiting resistor 23 may be connected in series in a circuit between the first vacuum electrode interface 312 and the positive electrode of the power module 22, or in a circuit between the second vacuum electrode interface 313 and the detection device 4. The current limiting resistor 23 protects the measuring device from being damaged by the sudden discharge signal, protects the safety of the system and prolongs the service life of the system.
Wherein, the vacuum environment simulation cavity can be a vacuum glass tube, in order to ensure the tightness of the vacuum environment and simultaneously facilitate the change of the parameters of the parallel plates, the first port 314 can be fixedly closed, and the second port 315 can be detachably arranged. The vacuum glass tube is used for closing the parallel plate discharge module, changing the air pressure value of the environment where the parallel plate discharge system is located and simulating different altitude conditions in a real environment. In order to ensure the tightness, the vacuum glass tube is only disassembled on one side, so that the discharge model is conveniently placed in the glass tube, and preferably, a circle of soft rubber can be added at the opening to increase the air tightness.
The system is applied to the aspect of combining electromagnetic environment testing and gas discharge, and plays a certain reference role in guaranteeing the railway safety problem.
In application, the electromagnetic radiation emission system used in the system is a system which is subjected to national certification, so that the repeatability of the test is ensured, the calibration of main instruments used in the test is also subjected to measurement calibration, and the repeatability and the reliability of the test are improved.
The whole system has the following characteristics:
1) the influence of electromagnetic interference with different frequencies and different intensities on the induction of the parallel plate discharge breakdown voltage and the discharge waveform can be measured;
2) the influence of the discharge breakdown voltage and the discharge waveform of the parallel plates induced by different gaps under certain electromagnetic interference intensity can be measured;
3) the device can measure the condition of the parallel plate discharge breakdown voltage and the influence of the discharge waveform induced under different air pressures under certain electromagnetic interference intensity;
4) the influence of different parallel plate materials under different air pressures under certain electromagnetic interference intensity on the discharge breakdown voltage and the discharge waveform of the parallel plate can be measured;
5) the influence of different parallel plate sizes on breakdown discharge and discharge waveforms under certain electromagnetic interference can be measured.
In the third specific embodiment, the parallel plate module 21 further includes a supporting dielectric plate 213, and the supporting dielectric plate 213 is disposed in the vacuum environment simulation chamber and is used for supporting the first electrode plate 211 and the second electrode plate 212.
Two support frames can be arranged on the support dielectric plate 213, the two support frames are respectively connected and fixed with the first electrode plate 211 and the second electrode plate 212, and the support dielectric plate 213 and the support frames are made of insulating materials.
In practical application, the medium plate and the support frame are used as a support platform. The parallel plates may be fixed by printing out the support outer frame of the parallel plates using 3D printing techniques and embedding the outer frame onto the dielectric plate platform.
In addition, the parallel plates can be made of materials with different sizes and shapes, such as metal and insulating materials.
In a fourth particular embodiment, the detection device 4 comprises an oscilloscope and a current probe unit;
the current probe unit is connected in a circuit between the second vacuum electrode interface 313 and the negative electrode of the power supply module 22;
the oscilloscope is connected with the current probe unit.
The oscilloscope displays the discharge condition of the discharge system under the condition of externally applying an electromagnetic field, and can capture time domain waveforms for the sudden voltage and current change condition.
The current probe unit is used for detecting the discharge condition and is convenient to display on an oscilloscope.
In a fifth embodiment, referring to fig. 2, the vacuum environment control module 32 includes a vacuum pump 33, an electromagnetic valve 34 and a pressure regulating unit 35;
the vacuum pump 33 is connected with the first end 341 of the electromagnetic valve, the second end 342 of the electromagnetic valve is connected with the inlet 351 of the pressure regulating unit, and the outlet 352 of the pressure regulating unit is connected with the vacuumizing port 311;
the electromagnetic valve 34, the pressure regulating unit 35 and the vacuumizing port 311 are connected in vacuum through a vacuum leather hose.
The vacuum pump 33 can control the air pressure in the vacuum glass tube, and adjust the air pressure to simulate the situation at different altitudes.
An electromagnetic valve 34 is installed between the vacuum pump 33 and the pressure regulating unit 35 so that the valve is closed to keep the air pressure constant after the air pressure in the vacuum glass tube reaches a desired value.
The pressure regulating unit 35 can regulate the air pressure in the vacuum glass tube according to the use requirement, and regulate the air pressure value in the vacuum glass tube in real time.
Specifically, the pressure regulating unit 35 includes a resistance vacuum gauge 36, a vacuum flapper valve 37, a four-way buffer tank 38, and an inflation pressure regulating component 39; the first port of the four-way buffer tank is an inlet 351 of the pressure regulating unit and is connected with the second end 342 of the electromagnetic valve, the second port 382 of the four-way buffer tank is connected with the resistance vacuum gauge 36, the third port 383 of the four-way buffer tank is connected with the inflation pressure regulating part 39, the fourth port 384 of the four-way buffer tank is connected with one end of the vacuum baffle valve 37, and the other end of the vacuum baffle valve 37 is an outlet 352 of the pressure regulating unit and is connected with the vacuumizing port 311.
The resistance vacuum gauge 36 measures and displays the air pressure value in the vacuum glass tube, so that the real-time monitoring of the air pressure value in the vacuum glass tube is facilitated, and the adjustment of the air pressure value in the vacuum glass tube by the vacuum pump 33 is facilitated;
after the vacuum baffle valve 37 is screwed, the gas in the vacuum glass tube can be prevented from leaking into the air;
the four-way buffer tank 38 stores gas with the same pressure as that in the vacuum glass tube, so that the measurement and the adjustment of the pressure are convenient;
the inflation pressure regulating part 39 can accurately regulate the air pressure value in the vacuum glass tube in real time.
It should be noted that the vacuum environment simulation chamber 31 and the vacuum environment control module 32 are connected by a vacuum hose, and the vacuum hose is used for conveying gas and ensuring tightness.
Specifically, the vacuum port 311 may be provided in the form of a vacuum bellows joint, which is mounted on the vacuum glass tube and is used for connecting a vacuum hose to change the pressure in the vacuum glass tube by the vacuum pump 33.
In the sixth specific embodiment, the electromagnetic field irradiation apparatus 1 comprises a signal generator 11, a power amplifier 12 and a transmitting antenna 13, and the signal generator 11, the power amplifier 12 and the transmitting antenna 13 are connected by coaxial cables in sequence.
The signal generator 11 is capable of generating continuous waves of a certain amplitude and different frequencies.
The power amplifier 12 is able to manually adjust the amplification level for the signal generated by the signal generator 11.
The transmitting antenna 13 radiates the amplified signal in the form of electromagnetic wave.
The coaxial cable is composed of copper conductors separated by insulating materials, another layer of annular conductors and insulators thereof are arranged outside the inner layer of insulating materials, and the whole cable is covered by a sheath made of polyvinyl chloride or teflon materials. The system is preferably a fundamental frequency coaxial cable which is used for transmitting signals amplified by the signal generator 11 through the power amplifier 12; the use of the coaxial cable can ensure impedance matching to the maximum extent and improve the transmission efficiency of the transmitting antenna 13.
The inflation pressure regulating component 39 comprises an inflation valve and an inflator pump, and the inflator pump is connected with the third port 383 of the four-way buffer tank through the inflation valve.
All devices in the system are connected to an electric control device, the electric control device is also provided with a liquid crystal display screen, and an air exhaust knob and an air inflation knob can be arranged in the electric control device to control air exhaust of the vacuum pump 33 and air inflation operation of the air inflation pump.
The inflation pressure regulating part can control the air pumping and inflation processes through the air pumping knob and the inflation knob, and the air pressure value in the vacuum glass tube is regulated in real time by combining the parameters displayed by the liquid crystal display screen.
Specifically, the air pressure adjusting process comprises the following steps: the air-extracting knob is turned on, the vacuum pump 33 is first pumped to a low-pressure state, the air-extracting knob is turned off, and then the air-inflating knob is adjusted according to the required air pressure.
In the seventh specific embodiment, the electromagnetic field irradiation apparatus 1 includes a signal generator 11, a power amplifier 12, a transmitting antenna 13, and a coaxial cable device. The device mainly comprises the steps of transmitting and converting signals, transmitting electric signals as electromagnetic wave signals through a transmitting antenna 13, acting on a parallel plate discharging device to discharge, and monitoring the power of the system.
Specifically, the transmitting antenna 13 with a wide bandwidth can be selected as required, and when the transmitting antenna 13 converts an electric signal into an electromagnetic wave signal to be transmitted, the electromagnetic wave signal acts on the parallel plate discharging device 2, a field intensity value can be calculated according to different types of antenna models, and the influence of frequency observation frequency can be changed. The whole electromagnetic field irradiation device keeps impedance matching, namely the impedance of the antenna, the characteristic impedance of the coaxial cable and the input and output impedance of the power amplifier are equal, and the impedance value is 50 omega.
The parallel plate discharging device 2 comprises a dielectric plate, a parallel plate, a direct current stabilized power supply and a current limiting resistor 23. The method is mainly used for simulating the discharge conditions of parallel plates of different materials and sizes in different gaps by using parallel plate discharge.
Under the condition of voltage stabilization and power supply of the direct-current stabilized power supply, a stable voltage difference is formed between the parallel plates to simulate the voltage difference existing between the surface-mounted metal devices or pins on the dielectric plate under the condition of power supply in a real environment, the parallel plates simulate two discharge electrodes, and the current-limiting resistor 23 protects the test equipment from being damaged when sudden discharge occurs under the interference condition.
The vacuum environment simulation device 3 comprises a vacuum pump 33, an electromagnetic valve 34, a resistance vacuum gauge 36, a vacuum flapper valve 37, a four-way buffer tank 38, an air inflation pressure regulating component 39, a vacuum hose, a vacuum leather hose joint and vacuum glass tube equipment. The method is mainly used for restoring and simulating the atmospheric pressure conditions of different altitudes of the real environment.
The detection device 4 comprises an oscilloscope and a current probe. The system functions to monitor and measure the discharge event and to measure the sudden discharge event. When external direct current high voltage is added to the critical discharge voltage of the model, external electromagnetic interference is turned on, and when the model discharges, the discharge waveform can be captured on the oscilloscope, so that the difference of different conditions can be compared.
Because the rising and falling edges of the discharge are in nanosecond level, the response speed of other devices cannot realize the acquisition of signals. An oscilloscope is the most preferred detection device.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. An electromagnetic field irradiation discharge system with adjustable vacuum degree for parallel plate electrodes is characterized by comprising an electromagnetic field irradiation device (1), a parallel plate discharge device (2), a vacuum environment simulation device (3) and a detection device (4);
the electromagnetic field irradiation device (1) is arranged outside the vacuum environment simulation device (3) and is used for simulating the irradiation condition of an external complex electromagnetic environment;
the parallel plate discharge device (2) is connected with the vacuum environment simulation device (3), and the parallel plate discharge device (2) is used for simulating the discharge condition of different parallel plates in the actual environment; the vacuum environment simulation device (3) is used for simulating vacuum conditions at different altitudes;
the detection device (4) is connected with the parallel plate discharge device (2) and is used for detecting the discharge waveform of the parallel plate discharge device (2);
the parallel plate discharging device (2) comprises a parallel plate module (21) and a power supply module (22);
the parallel plate module (21) comprises a supporting medium plate (213) and parallel plates, and the power supply module (22) comprises a direct current stabilized voltage power supply and a current-limiting resistor; parallel plate discharge is used for simulating the discharge conditions of parallel plates of different materials and sizes under different gap states;
the vacuum environment simulation device (3) comprises a vacuum environment simulation cavity (31) and a vacuum environment control module (32), wherein the vacuum environment simulation cavity (31) is provided with a vacuumizing port (311) and a vacuum electrode interface, and the vacuum electrode interface comprises a first vacuum electrode interface (312) and a second vacuum electrode interface (313); the vacuum environment control module (32) is connected with the vacuum environment simulation cavity (31) through the vacuumizing port (311);
the parallel plate module (21) is arranged in the vacuum environment simulation cavity (31), the parallel plate module (21) comprises a first electrode plate (211) and a second electrode plate (212), and the first electrode plate (211) is connected with the positive electrode of the power supply module (22) by leading out from the first vacuum electrode interface (312); the second electrode plate (212) is connected with the negative electrode of the power supply module (22) by leading out from the second vacuum electrode interface (313);
the detection device (4) is connected to a circuit between the second vacuum electrode interface (313) and the negative electrode of the power supply module (22);
the electromagnetic field irradiation device (1) is arranged outside the vacuum environment simulation cavity (31);
the vacuum environment control module (32) comprises a vacuum pump (33), an electromagnetic valve (34) and a pressure regulating unit (35);
the vacuum pump (33) is connected with a first end (341) of the electromagnetic valve, a second end (342) of the electromagnetic valve is connected with an inlet (351) of the pressure regulating unit, and an outlet (352) of the pressure regulating unit is connected with the vacuumizing port (311);
the electromagnetic valve (34), the pressure regulating unit (35) and the vacuumizing port (311) are connected in a vacuum manner through a vacuum leather hose;
the pressure regulating unit (35) comprises a resistance vacuum gauge (36), a vacuum baffle valve (37), a four-way buffer tank (38) and an inflation pressure regulating component (39); the four-way buffer tank is characterized in that a first port of the four-way buffer tank is a pressure regulating unit inlet (351) connected with a second end (342) of the electromagnetic valve, a second port (382) of the four-way buffer tank is connected with the resistance vacuum gauge (36), a third port (383) of the four-way buffer tank is connected with the inflation pressure regulating component (39), a fourth port (384) of the four-way buffer tank is connected with one end of the vacuum baffle valve (37), and the other end of the vacuum baffle valve (37) is a pressure regulating unit outlet (352) connected with the vacuumizing port (311).
2. The parallel-plate electrode electromagnetic field irradiation discharge system according to claim 1, characterized in that the current limiting resistor (23) is connected in series in the circuit between the first vacuum electrode interface (312) and the positive pole of the power supply module (22) or in the circuit between the second vacuum electrode interface (313) and the detection device (4).
3. The parallel-plate electrode electromagnetic field irradiation discharge system according to claim 2, wherein said supporting dielectric plate (213) is located in said vacuum environment simulation chamber (31) for supporting said first electrode plate (211) and said second electrode plate (212), and said supporting dielectric plate (213) is made of an insulating material.
4. The parallel-plate electrode electromagnetic field irradiation discharge system according to claim 3, wherein the detecting means (4) comprises an oscilloscope and a current probe unit;
the current probe unit is connected in a circuit between the second vacuum electrode interface (313) and the negative electrode of the power supply module (22);
the oscilloscope is connected with the current probe unit.
5. The parallel-plate electrode electromagnetic field irradiation discharge system according to claim 4, wherein the electromagnetic field irradiation apparatus (1) comprises a signal generator (11), a power amplifier (12), and a transmitting antenna (13), and the signal generator (11), the power amplifier (12), and the transmitting antenna (13) are connected by a coaxial cable in this order.
6. The parallel-plate electrode electromagnetic field irradiation discharge system according to claim 5, wherein the vacuum environment simulation chamber (31) is a vacuum glass tube, a first port (314) of the vacuum glass tube is closed and fixed, and a second port (315) of the vacuum glass tube is detachable.
7. The parallel-plate electrode electromagnetic field irradiation discharge system of claim 1, wherein the inflation pressure regulating component (39) comprises an inflation valve and an inflation pump, and the inflation pump is connected with the third port (383) of the four-way buffer tank through the inflation valve.
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| CN109932607B (en) * | 2019-04-16 | 2023-10-13 | 中国人民解放军陆军工程大学 | Space radiation environment strong electromagnetic field induced electrostatic discharge test system |
| CN113533914A (en) * | 2021-07-09 | 2021-10-22 | 中国人民解放军陆军工程大学 | Electrostatic pulse induced electrostatic discharge experimental system and method in vacuum environment |
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