Method for ensuring stable electrostatic elimination capability of electrostatic eliminator in low-pressure environment

Abstract

The invention discloses a method for ensuring stable static elimination capability of a static eliminator in a low-pressure environment, and belongs to the field of static elimination. Under a set air pressure condition, an electric field model of a simulation domain of the electrostatic eliminator is established, electric field distribution of the simulation domain is solved, and electromigration of charged particles under an air pressure parameter is solved by utilizing integration of a Desen ionization coefficient alpha along an electric field. According to an electric breakdown discrimination formula, judging the voltage parameters of the discharge electrode and the electromigration type of the charged particles under the set air pressure parameters, and searching and solving the minimum and maximum working voltages of the discharge electrode under different air pressure parameters; the working voltage ranges of the discharge electrode under different air pressure parameters are obtained, the corresponding high-voltage circuit is designed according to the discharge electrode limit working voltage obtained through the simulation test, and the working voltage level is preset, so that the application problem of the static eliminator under different environment air pressures is solved. The electricity eliminating device is more suitable for a low-pressure working environment; the debugging feasibility and convenience are improved, and the good electricity elimination performance can be easily achieved.

Description

Technical Field

[0001] The invention belongs to the field of static elimination, and in particular relates to a method for ensuring the stable static elimination capability of a static eliminator in a low-pressure environment. Background Art

[0002] Static eliminator, also known as static eliminator or electrostatic eliminator, is mainly composed of a high-voltage power generator and a discharge electrode (needle). It ionizes the air into a large number of positive and negative ions through the high-voltage corona discharge mode at the tip, and then uses wind to blow a large number of positive and negative ions to the surface of the object to neutralize the static electricity carried by the surface of the object; or, directly put the static eliminator close to the surface of the object to be eliminator to neutralize the static electricity.

[0003] Static eliminators are mainly used in the static elimination operation in the industrial production process and belong to the electronic product series. They can usually be divided into: ion blowers, ion air guns, ion air rods, ion air drums, ion air snakes, ion air nozzles, ion air curtains, etc.

[0004] At present, the static eliminators on the market are basically used in relatively high pressure environments below 2000m above sea level. The working high voltage setting of the discharge electrode is based on the standard atmospheric pressure (101.3kPa); this can form a stable discharge state under atmospheric pressure, and then can stably output positive and negative ions to eliminate static charges on the surface of objects.

[0005] However, when the static eliminator is used in high altitude areas (such as 4000m), the atmospheric pressure will drop to about 61.3kPa, and the previously set discharge electrode working high voltage value may no longer be applicable, because under low pressure conditions, the higher discharge voltage is very likely to cause spark discharge (i.e. breakdown phenomenon), and it is impossible to form a stable and sustainable discharge, which in turn leads to the inability to form stable positive and negative ion output; or, the static eliminator is used in low pressure equipment (such as vacuum equipment, the air pressure environment is 1kPa, 0.1kPa), and the previously set discharge electrode working high voltage value will no longer be applicable. It is necessary to re-determine the discharge electrode working high voltage and design a high voltage circuit to achieve stable and sustainable discharge, thereby forming a stable positive and negative ion output, and ultimately achieving stable destaticization performance.

[0006] For usage scenarios at specific altitudes, existing static eliminators can only reset the working high voltage of the discharge electrode and determine the corresponding working parameters of the static eliminator high voltage circuit through actual on-site measurement and debugging.

[0007] The existing technical solutions have the following technical defects:

[0008] 1) The on-site measurement and debugging method is adopted, which has high implementation cost and poor convenience;

[0009] 2) Because the high-voltage output range of the high-voltage circuit of the existing anti-static device is designed without considering the application in a low-pressure environment, in a low-pressure environment, the debugging purpose cannot be achieved within the originally set high-voltage output amplitude control range, and a problem of failing to achieve good anti-static performance will occur.

[0010] The patent with the authorization announcement date of 2015.12.09 and the authorization announcement number of CN 104360177 B discloses a "surface electrification test system for dielectric materials in low-pressure environment", which relates to the field of devices or systems for measuring electrical variables. The test system includes a high-voltage electrostatic generator, whose voltage output end is electrically connected to the vacuum tank system through a wire and a vacuum lead connector; a non-contact electrostatic voltage tester is electrically connected to the vacuum tank system through a wire and a vacuum lead connector; a stepper motor controller is electrically connected to the vacuum tank system through a wire and a vacuum lead connector; the vacuum tank system is sealed with a vacuum pump through a vacuum tube; and a vacuum gauge is connected to the vacuum tank system through a wire and a vacuum lead connector. The test system is used to study the variation law of the electrostatic potential of different surface materials of a solar cell array, analyze the electrostatic coupling channel, and provide experimental data for theoretical research on secondary discharge energy and its influence on the solar power system, and determine the electrostatic discharge failure mechanism of the solar cell array. Although this technical solution involves an electrostatic voltage test device for testing electrical variables and a vacuum tank system for simulating low-pressure conditions, its overall technical idea is to simulate low-pressure conditions (equivalent to the use scenario in high-altitude areas) by using a vacuum device, and to obtain the variation law of the electrostatic potential of different surface materials of the solar cell array through actual testing. Its implementation cost is relatively high and its convenience is poor, and it cannot be used to conveniently determine the high-voltage output range of the high-voltage circuit of the de-static device in the low-pressure use scenario.

[0011] In summary, how to ensure that the deionizing device produces stable and sustainable discharge in a low-pressure environment, thereby forming a stable output of positive and negative ions, and ultimately achieving stable deionizing performance; how to improve the feasibility and convenience of debugging the deionizing device, and how to easily achieve good deionizing performance, are technical issues that need to be urgently solved in the design and manufacturing process of the deionizing device. Summary of the invention

[0012] The technical problem to be solved by the present invention is to provide a method for ensuring the stable de-staticization capability of the static eliminator in a low-pressure environment. It adopts a simulation method to obtain the limit working voltage of the discharge electrode of the de-staticization device under different pressures for the use scenarios under different preset pressures, and designs a high-voltage circuit and presets the working voltage level based on this, so that the de-staticization device can produce stable and sustainable discharge in a low-pressure environment, thereby forming a stable positive and negative ion output, and finally achieving stable de-staticization performance, making the de-staticization device more suitable for a low-pressure working environment; in this way, the feasibility and convenience of debugging are improved, and good de-staticization performance can be easily achieved.

[0013] The technical solution of the present invention is to provide a method for ensuring the stable destaticization capability of an electrostatic eliminator in a low pressure environment, which is characterized by:

[0014] 1) Set a required air pressure parameter; establish a simulation structure model based on the discharge structure of the existing static eliminator;

[0015] 2) For the above simulation structure model, a rectangular simulation area including the above simulation structure is established, and an electric field model of this simulation domain is established according to electrostatic field theory;

[0016] 3) Set the positive and negative discharge electrode voltage parameters and solve the electric field distribution in the above simulation domain first;

[0017] 4) The electric field distribution obtained under the above positive and negative discharge electrode voltage parameters is used as the background physical field of the discharge area, and the Townsend ionization coefficient α is used to integrate along the electric field to solve the electrical migration of charged particles under the set gas pressure parameters;

[0018] 5) According to the electric breakdown discrimination formula under the states of no discharge, sustained discharge, continuous discharge and streamer breakdown, the electric migration type of charged particles under the above-mentioned discharge electrode voltage parameters and set gas pressure parameters is determined;

[0019] 6) According to the above-mentioned electromigration type of charged particles, determine the discharge electrode limit working voltage of the discharge electrode under the set gas pressure parameter; that is, if it meets the electric breakdown discrimination formula under the maintaining discharge state, its voltage parameter is used as the starting discharge voltage; if it meets the electric breakdown discrimination formula under the streamer breakdown state, its lowest voltage parameter is used as the streamer breakdown voltage; based on these two parameters, determine the minimum and maximum working voltage ranges of the discharge electrode;

[0020] 7) If the electromigration of charged particles meets the electric breakdown judgment formula under the state of no discharge or continuous discharge, but does not meet the electric breakdown judgment formula under the state of sustained discharge or streamer breakdown, the discharge electrode voltage parameters need to be reset;

[0021] 8) Resetting the discharge electrode voltage parameter to solve its electric field distribution; and repeating the simulation process of charged particle electromigration under the set pressure parameter to find the discharge electrode voltage parameter of the charged particle electromigration type that meets the electric breakdown judgment formula under the state of maintaining discharge and streamer breakdown;

[0022] 9) Repeat the above steps 3 to 8 to find and solve the minimum and maximum operating voltages of the discharge electrode under different gas pressure parameters; obtain the operating voltage range of the discharge electrode under different gas pressure parameters;

[0023] 10) According to the discharge pole limit working voltage obtained from the simulation test, design the corresponding high-voltage circuit and preset the working voltage level to solve the application problem of the extinguisher under different ambient pressures.

[0024] Specifically, the discharge structure of the electrostatic eliminator includes at least a discharge electrode structure, a discharge electrode arrangement / layout, a discharge electrode spacing and an insulation structure setting; the rectangular simulation area is a constructed discharge area; and the positive and negative discharge electrode voltage parameters include voltage amplitudes.

[0025] Furthermore, the electrical breakdown judgment formulas in the no-discharge state, the sustained-discharge state, the continuous-discharge state, and the streamer-breakdown state are as follows:

[0026] Formula I:

[0027] Formula II:

[0028] Formula III:

[0029] Formula IV:

[0030] Where: γ i is the secondary emission coefficient, dimensionless; N is the gas molecule number density, SI unit: 1 / m 3 ; α is the Townsend coefficient, SI unit: m 2 ; s is the arc length along the charged particle trajectory, the upper limit of integration D is the distance from the source boundary to any target boundary; d is the gap distance in centimeters.

[0031] Specifically, in the electric breakdown judgment formula under the states of no discharge occurrence, sustained discharge, continuous discharge and streamer breakdown, the working temperature is set to 293.15 [K], the cathode secondary emission coefficient is set to 0.07, and clean dry air is set as the working gas.

[0032] Furthermore, the discharge electrode voltage parameter includes a voltage amplitude; and the discharge electrode minimum voltage parameter includes a voltage amplitude.

[0033] Specifically, the determination of the limit working voltage of the discharge electrode of the discharge device under the set gas pressure parameters includes: if it meets the electric breakdown judgment formula under the maintained discharge state, its voltage parameter is used as the starting discharge voltage; if it meets the electric breakdown judgment formula under the streamer breakdown state, its lowest voltage parameter is used as the streamer breakdown voltage; based on these two parameters, the minimum and maximum working voltage ranges of the discharge electrode are determined.

[0034] Furthermore, the minimum operating voltage U of the discharge electrode 维持放电 , Maximum operating voltage U 流注击穿 The working voltage U of the discharge electrode 工作电压 The relationship between them is as follows:

[0035] U 维持放电 <U 工作电压 <U 流注击穿 ;

[0036] The minimum and maximum operating voltages of the discharge electrodes of the static eliminator are within this range. Only when the static eliminator is within this range can it achieve normal discharge for the purpose of static elimination.

[0037] Specifically, in step 6, if the set discharge electrode voltage parameters make the electrical migration of charged particles conform to the electrical breakdown judgment formula under the maintained discharge state, then the lower limit of the discharge electrode working voltage under the above-mentioned set gas pressure parameters is determined; and when the set discharge electrode minimum voltage parameters make the electrical migration of charged particles conform to the electrical breakdown judgment formula under the streamer breakdown state, then the upper limit of the discharge electrode working voltage under the above-mentioned set gas pressure parameters is determined.

[0038] Specifically, the application problems of the dissipator under different ambient air pressures include the normal operation and normal use of the dissipator under different ambient air pressures.

[0039] Furthermore, the method for ensuring the stable static eliminator's destaticizing capability in a low-pressure environment takes a middle group of positive and negative discharge electrodes as the research object of electromigration; the middle negative discharge electrode is set as the cathode emitter, and the middle positive discharge electrode is set as the target electrode.

[0040] Compared with the prior art, the advantages of the present invention are:

[0041] 1. The technical solution of the present invention is to design a high-voltage circuit and preset a working voltage level specifically for a low-pressure environment, so that the anti-static device is more suitable for a low-pressure working environment, and to generate a stable and sustainable discharge in a low-pressure environment, thereby forming a stable positive and negative ion output, and finally achieving a stable anti-static performance; this reduces the difficulty of on-site debugging for customers, greatly improves the convenience of use, and reduces the cost of technical / sales services;

[0042] 2. The application of this technical solution reduces the discharge test cost of the low-pressure environment anti-static device and improves the product development efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a flowchart of the method of this technical solution;

[0044] Figure 2-1 It is a schematic diagram of the axonometric structure of the simulation structure model of this technical solution;

[0045] Figure 2-2 It is a schematic diagram of the top view of the simulation structure model of this technical solution;

[0046] Figure 2-3 It is a side view structural diagram of the simulation structural model of the technical solution;

[0047] Figure 3-1 This is a schematic diagram of the electromigration trajectory of charged particles when the discharge electrode voltage amplitude is 3250V under 61.3kPa gas pressure in this technical solution;

[0048] Figure 3-2 This is a schematic diagram of the electromigration trajectory of charged particles when the discharge electrode voltage amplitude is 5400V under a gas pressure of 61.3kPa in this technical solution;

[0049] Figure 4 Schematic diagram of the discharge electrode working voltage limit under different gas pressures.

[0050] In the figure, 1 is the positive discharge electrode, 2 is the negative discharge electrode, and 3 is the rod core insulating baffle. DETAILED DESCRIPTION

[0051] The present invention will be further described below in conjunction with the accompanying drawings.

[0052] The technical solution of the present invention first sets an air pressure parameter, that is, corresponds to an altitude, according to the need; then, in the use environment of the set air pressure parameter, the following steps are performed:

[0053] 1) According to the discharge structure of the existing electrostatic eliminator (including discharge electrode structure, discharge electrode arrangement / spacing, insulation structure setting, etc.), a simulation structure model is established. The axonometric structure, top view structure and side view structure of the simulation structure model are shown in Fig. Figure 2-1 , 2-2 , 2-3. Considering the spatial electric field interaction between the positive and negative discharge electrodes, three groups of positive and negative discharge electrodes are arranged. The positive and negative discharge electrodes are arranged at equal intervals in the horizontal direction, and the positive discharge electrode 1 and the negative discharge electrode 2 are spaced 50 mm apart. The positive discharge electrode and the negative discharge electrode are separated by an insulating baffle (also called a rod core insulating baffle 3);

[0054] 2) For the above-mentioned simulation structure model, a rectangular simulation area (i.e., a discharge area) including the above-mentioned simulation structure is established, and an electric field model of this simulation domain is established according to electrostatic field theory;

[0055] 3) Set the positive and negative discharge electrode voltage parameters (voltage amplitude) and first solve the electric field distribution in the above simulation domain;

[0056] 4) The electric field distribution obtained under the above discharge electrode voltage parameters is used as the background physical field of the discharge area, and the Townsend ionization coefficient α is used to integrate along the electric field to solve the electrical migration of charged particles under the set gas pressure parameters;

[0057] 5) According to the following electrical breakdown judgment formula, the type of electrical migration of charged particles under the above discharge electrode voltage parameters and set gas pressure parameters is determined:

[0058] Formula I:

[0059] Formula II:

[0060] Formula III:

[0061] Formula IV:

[0062] Where: γ i is the secondary emission coefficient (dimensionless), N is the gas molecule number density (SI unit: 1 / m 3 ), α is the Townsend coefficient (SI unit: m 2 ), s is the arc length along the charged particle trajectory, the upper limit of integration D is the distance from the source boundary (emission boundary) to any target boundary; d is the gap distance in centimeters;

[0063] In this technical solution, the operating temperature is set to 293.15[K], and the cathode secondary emission coefficient γ i is 0.07, and clean dry air is set as the working gas;

[0064] Considering the mutual influence of the electric field between the discharge electrodes, this technical solution takes a group of positive and negative discharge electrodes in the middle as the research object of electromigration; the middle negative discharge electrode (referred to as the negative discharge electrode) is set as the cathode emitter, and the middle positive discharge electrode (referred to as the positive discharge electrode) is set as the target electrode;

[0065] 6) If the electromigration of charged particles complies with formula I or III, but does not comply with formula II or IV, the discharge electrode voltage parameters need to be reset;

[0066] 7) Re-setting the discharge electrode voltage parameters and solving its electric field distribution; and repeating the charged particle electromigration simulation process under the above-mentioned set gas pressure parameters, and finding the discharge electrode voltage parameters of the charged particle electromigration type that meet formulas II and IV respectively;

[0067] 8) According to the above-mentioned electromigration type of charged particles, the limiting working voltage of the discharge electrode of the discharger under the set gas pressure parameters is determined; that is, if it meets Formula II, its voltage parameter is used as the starting discharge voltage; if it meets Formula IV, its lowest voltage parameter is used as the streamer breakdown voltage; thus, the minimum and maximum working voltage ranges of the discharge electrode are determined by the two;

[0068] 9) For example, see Figure 3-1 , 3-2 As shown, they are respectively the electromigration trajectories of charged particles when the positive / negative discharge electrode voltage amplitudes are 3250V and 5400V respectively under the gas pressure of 61.3kPa of the technical solution; when the positive / negative discharge electrode voltage amplitude is set to 3250V, the electromigration of charged particles is calculated by simulation to meet Formula II, just maintaining the discharge under this gas pressure, and the charged particles reach the maximum movement speed of 1.32m / s at the moment of collision with the middle positive electrode; and when the positive / negative discharge electrode voltage amplitude is set to be 5400V at the lowest, the electromigration of charged particles is calculated by simulation to meet Formula IV, then it is judged that streamer breakdown occurs between the positive and negative discharge electrodes under this gas pressure, and the charged particles reach the maximum movement speed of 3.37m / s at the moment of collision with the middle positive electrode; therefore, under the gas pressure of 61.3kPa, the working voltage (voltage amplitude) range of the ion rod discharge electrode is 3250V<U 工作电压 <5400V;

[0069] 10) Repeat the above steps 3-8 to find and solve the minimum and maximum working voltage of the discharge electrode under different gas pressure parameters, that is: U 维持放电 <U 工作电压 <U 流注击穿 ;

[0070] 11) See Figure 4 As shown in the figure, the discharge electrode working voltage limit under different gas pressure parameters obtained by simulation test, only when the discharge electrode voltage amplitude is within this range, can normal discharge for the purpose of static elimination be achieved;

[0071] 12) According to the above simulation test, the discharge electrode limit working voltage under different gas pressures is:

[0072] U 维持放电 <U 工作电压 <U 流注击穿 ,

[0073] Design high-voltage circuits and preset working voltage levels to solve the application problems of eliminators under different ambient air pressures.

[0074] The technical solution of the present invention adopts a simulation method to obtain the limiting working voltage of the discharge electrode of the destaticizing device under different air pressures for the usage scenarios under different preset air pressures, and uses this to design a high-voltage circuit and preset the working voltage level, so that the destaticizing device can produce stable and sustainable discharge in a low-pressure environment, thereby forming a stable positive and negative ion output, and finally achieving stable destaticizing performance, making the destaticizing device more suitable for a low-pressure working environment; in this way, the feasibility and convenience of debugging are improved, and good destaticizing performance can be easily achieved.

[0075] In addition, the technical solution of the present invention specially designs high-voltage circuits and presets working voltage levels for low-pressure environments, making the anti-static device more suitable for low-pressure working environments, generating stable and sustainable discharges in low-pressure environments, thereby forming stable positive and negative ion outputs, and ultimately achieving stable anti-static performance; this reduces the difficulty of on-site debugging for customers, greatly improves ease of use, and reduces the cost of technical / sales services.

[0076] Finally, the application of this technical solution reduces the cost of discharge testing of anti-static devices in low-pressure environments and improves product development efficiency.

[0077] The invention can be widely used in the field of design and manufacture of static elimination devices.

Claims

1. A method for ensuring stable static eliminator capability in a low pressure environment, characterized by: 1) Set a required air pressure parameter; establish a simulation structure model based on the discharge structure of the existing static eliminator; 2) For the above simulation structure model, a rectangular simulation area including the above simulation structure is established, and an electric field model of this simulation domain is established according to electrostatic field theory; 3) Set the positive and negative discharge electrode voltage parameters and solve the electric field distribution in the above simulation domain first; 4) The electric field distribution obtained under the above positive and negative discharge electrode voltage parameters is used as the background physical field of the discharge area, and the Townsend ionization coefficient α is used to integrate along the electric field to solve the electrical migration of charged particles under the set gas pressure parameters; 5) judging the type of electrical migration of charged particles under the above-mentioned discharge electrode voltage parameters and set gas pressure parameters according to the electrical breakdown discrimination formulas under the no-discharge state, the maintained-discharge state, the continuous-discharge state and the streamer breakdown state; 6) According to the above-mentioned type of electrical migration of charged particles, determine the discharge voltage limit of the discharge device under the set gas pressure parameter; that is, if it meets the electric breakdown judgment formula of the maintained discharge state, its voltage parameter is used as the starting discharge voltage; If the electric breakdown judgment formula of the streamer breakdown state is met, its lowest voltage parameter is taken as the streamer breakdown voltage; based on these two parameters, the minimum and maximum operating voltage ranges of the discharge electrode are determined; 7) If the electromigration of charged particles meets the electric breakdown judgment formula under the state of no discharge or continuous discharge, but does not meet the electric breakdown judgment formula under the state of sustained discharge or streamer breakdown, the discharge electrode voltage parameters need to be reset; 8) Reset the discharge electrode voltage parameter and solve its electric field distribution; and repeat the charged particle electromigration simulation process under the set pressure parameter to find the discharge electrode voltage parameter of the charged particle electromigration type that meets the electric breakdown judgment formula of the maintaining discharge state and the streamer breakdown state; 9) Repeat the above steps 3 to 8 to find and solve the minimum and maximum operating voltages of the discharge electrode under different gas pressure parameters; obtain the operating voltage range of the discharge electrode under different gas pressure parameters; 10) According to the discharge pole limit working voltage obtained from the simulation test, design the corresponding high-voltage circuit and preset the working voltage level to solve the application problem of the extinguisher under different ambient pressures.

2. The method for ensuring the stable destaticization capability of the static eliminator in a low pressure environment according to claim 1, characterized in that The discharge structure of the electrostatic eliminator at least includes a discharge electrode structure, a discharge electrode arrangement / layout, a discharge electrode spacing and an insulation structure setting; the rectangular simulation area is a constructed discharge area; and the positive and negative discharge electrode voltage parameters include voltage amplitudes.

3. The method for ensuring the stable destaticization capability of the static eliminator in a low pressure environment according to claim 1, characterized in that The electrical breakdown judgment formulas in the no-discharge state, the sustained-discharge state, the continuous-discharge state, and the streamer-breakdown state are as follows: Formula I: ——No discharge occurs; Formula II: - Maintain discharge; Formula III: - continuous discharge; Formula IV: ——streamer breakdown; Where: γ i is the secondary emission coefficient, dimensionless; N is the gas molecule number density, SI unit: 1 / m 3 ; α is the Townsend coefficient, SI unit: m 2 ; s is the arc length along the charged particle trajectory, and the upper limit of integration D is the distance from the source boundary to any target boundary; d is the gap distance in centimeters.

4. The method for ensuring stable static elimination capability of a static eliminator in a low pressure environment according to claim 3, characterized in that In the electric breakdown judgment formula under the states of no discharge occurrence, sustained discharge, continuous discharge and streamer breakdown, the working temperature is set to 293.15 [K], the cathode secondary emission coefficient is set to 0.07, and clean dry air is set as the working gas.

5. The method for ensuring the stable destaticization capability of an electrostatic eliminator in a low pressure environment according to claim 1, characterized in that The discharge electrode voltage parameter includes voltage amplitude; the discharge electrode minimum voltage parameter includes voltage amplitude.

6. The method for ensuring stable static eliminator capability in a low pressure environment according to claim 1, characterized in that The determination of the limit working voltage of the discharge electrode of the discharge device under the set gas pressure parameters includes: if it meets the electric breakdown judgment formula of the maintaining discharge state, its voltage parameter is used as the starting discharge voltage; if it meets the electric breakdown judgment formula of the streamer breakdown state, its lowest voltage parameter is used as the streamer breakdown voltage; based on these two parameters, the minimum working voltage and maximum working voltage range of the discharge electrode are determined.

7. The method for ensuring stable static elimination capability of a static eliminator in a low pressure environment according to claim 6, characterized in that Minimum operating voltage U of discharge electrode 维持放电 , Maximum operating voltage U 流注击穿 The working voltage U of the discharge electrode 工作电压 The relationship between them is as follows: IN 维持放电 <In 工作电压 <In 流注击穿 ; Only when the minimum and maximum operating voltages of the discharge electrode are within this range can the static eliminator achieve normal discharge for the purpose of static elimination.

8. The method for ensuring the stable destaticization capability of an electrostatic eliminator in a low-pressure environment according to claim 1 is characterized in that in step 6, if the set discharge electrode voltage parameter makes the electromigration of charged particles conform to the electric breakdown judgment formula under the maintained discharge state, then the lower limit of the discharge electrode working voltage under the above-mentioned set pressure parameter is determined; and when the set discharge electrode minimum voltage parameter makes the electromigration of charged particles conform to the electric breakdown judgment formula under the streamer breakdown state, then the upper limit of the discharge electrode working voltage under the above-mentioned set pressure parameter is determined.

9. The method for ensuring stable static eliminator capability in a low pressure environment according to claim 1, characterized in that The application problems of the electric discharge device under different ambient air pressures include the normal operation and normal use problems of the electric discharge device under different ambient air pressures.

10. The method for ensuring the stable destaticization capability of a static eliminator in a low pressure environment according to claim 1, wherein A method for ensuring the stable destaticization capability of an electrostatic eliminator in a low-pressure environment, taking a middle set of positive and negative discharge electrodes as the research object of electromigration; setting the middle negative discharge electrode as a cathode emitter, and the middle positive discharge electrode as a target electrode.

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