Method for determining electrode spacing of an ion generating device

Abstract

The application relates to a method for determining the electrode spacing of an ion generating device, belonging to the field of corona discharge devices. The method comprises the following steps: discharging test is carried out on a simulated device of de-energizing / energizing under different electrode spacings between two adjacent electrodes, the maximum value I of the discharge current received by an oscilloscope within a time T (s) is measured, the current value per unit length is calculated, the maximum current density received under various discharge electrode spacings is calculated, and the electrode spacing D corresponding to the maximum value is taken as the optimal electrode spacing. The method uses the parameter of the maximum current density to determine the optimal discharge electrode spacing between the two adjacent electrodes, so as to increase the ion quantity generated by the ion generating device under the same voltage, and the de-energizing / energizing rod releases the most ions within the length range, and the discharge efficiency is maximized. The method can be widely used in the design and manufacturing field of various specifications of de-energizing / energizing rods.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of corona discharge device, and particularly relates to a method for determining the electrode spacing of an ion generating device. BACKGROUND

[0002] The existing ion generating products, whether a corona discharge type static eliminator for static electricity elimination or a corona discharge type electric charger for electric charging, have never systematically studied the influence of the spacing between the discharge electrodes on the effect of static electricity elimination or electric charging.

[0003] The spacing between the discharge electrodes has an important influence on the discharge efficiency. The optimal discharge electrode spacing will produce the maximum discharge efficiency and the largest number of ions under other same conditions. For example, the optimal spacing between the electrodes is determined by the current density to achieve the largest number of ions generated by the ion generating device under the same voltage. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a method for determining the electrode spacing of an ion generating device. The method performs discharge test through a discharge simulation device and determines the optimal discharge electrode spacing by using the maximum current density as a parameter, so that the static electricity elimination / electric charging rod can release the largest number of ions within its length range and achieve the maximum discharge efficiency.

[0005] The technical solution of the present application is to provide a method for determining the electrode spacing of an ion generating device, characterized in that:

[0006] 1) fixing or determining the values of the related test parameters;

[0007] 2) setting an AC / DC high voltage power supply, a simulated static electricity elimination / electric charging object, a test instrument, and a static electricity elimination / electric charging rod at a vertical distance H from the center of the simulated static electricity elimination / electric charging object;

[0008] 3) vertically arranging the static electricity elimination / electric charging rod or the discharge electrode and the surface of the simulated static electricity elimination / electric charging object, and setting the vertical distance between them as the static electricity elimination / electric charging distance H;

[0009] 4) electrically connecting the output end of the AC / DC high voltage power supply to the power input end of the static electricity elimination / electric charging rod;

[0010] 5) starting the AC / DC high voltage power supply to slowly increase the voltage and make the high voltage on the discharge electrode reach the discharge electrode voltage U;

[0011] 6) simultaneously starting the test instrument and the AC / DC high voltage power supply to measure the maximum value I of the discharge current received by the test instrument within a measurement time T (s);

[0012] 7) calculating the current value per unit length;

[0013] 8) Test the various discharge electrode spacings D1, D2, D3…D according to the above steps. m During setup, the maximum currents I1, I2, I3…I received by the test instrument are... m ;

[0014] 9) Calculate the electrode spacings D1, D2, D3…D for various discharge electrodes. m The maximum current density received under the following conditions: J1, J2, J3…J m ;

[0015] 10) Take J1, J2, J3...J m The maximum value in the figure corresponds to the electrode spacing D, which is the optimal electrode spacing for the ion generator.

[0016] The fixed relevant test parameter values ​​mentioned therein include at least the effective excitation / application length L of the excitation / application rod, the diameter d of the discharge electrode and needle tip, the discharge electrode voltage U, and the excitation / application distance H.

[0017] The formula for calculating the current value per unit length is as follows:

[0018] ①When L≤λ:

[0019] ②When L>λ:

[0020] Where L represents the effective power-dissipating / power-applying length of the power-dissipating / power-applying rod, and λ represents the length of the simulated power-dissipating / power-applying body.

[0021] Specifically, the testing instrument is an oscilloscope.

[0022] A resistor is connected in parallel between the two input terminals of the oscilloscope.

[0023] The resistor mentioned is a non-inductive resistor.

[0024] The simulated object to be energized / energized includes a U-shaped grounding plate made of stainless steel; the U-shaped grounding plate is grounded only through a grounding socket to prevent the inflow of other stray currents.

[0025] Specifically, the U-shaped grounding plate is connected to the ground through a non-inductive resistor.

[0026] Furthermore, an oscilloscope is connected in parallel across the non-inductive resistor to observe the discharge voltage or current, thereby calculating the discharge current density under different electrode spacings, and selecting the maximum value to determine the optimal electrode spacing D.

[0027] Furthermore, a plastic film is laid on the surface of the U-shaped ground plane to facilitate the simulation of the static elimination / static effect on the material surface.

[0028] The beneficial effects of the technical solution of this invention are:

[0029] By conducting the discharge electrode spacing test, the optimal electrode spacing between each discharge electrode of the current elimination / electricity application rod can be determined, thereby maximizing the discharge efficiency of the current elimination / electricity application rod, generating the most ions for current elimination / electricity application on the object surface, and improving the current elimination / electricity application effect. Attached Figure Description

[0030] Figure 1 This is a flowchart of the electrode spacing determination method of the present invention;

[0031] Figure 2 This is a schematic diagram of the discharge test device with optimized electrode spacing according to the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of the power-off / power-on simulation device of the present invention;

[0033] Figure 4 yes Figure 3 Side view.

[0034] In the diagram, 1 is the power-off / power-on rod, 2 is the discharge electrode, 3 is the stainless steel U-shaped grounding plate, 4 is the simulated object to be powered off / on, 5 is the oscilloscope, 6 is the connector, 7 is the high-voltage cable, 8 is the AC / DC high-voltage power supply, 9 is the grounding socket, 10 is the PTFE insulating clip, R is the non-inductive resistor, and V is the high-voltage voltmeter. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Figure 1 The present invention provides a method for determining the electrode spacing of an ion generator, the basic operating steps of which include:

[0037] 1. Fix the relevant test parameter values, such as the effective discharge / energization length L (mm) of the discharge / energization rod (i.e., the length of the discharge electrode arrangement), the diameter d (mm) of the discharge electrode and the needle tip, the discharge electrode voltage U (KV), and the discharge / energization distance H (mm).

[0038] 2. Press Figure 2 As shown, an AC / DC high-voltage power supply, a simulated object to be energized / energized, and a testing instrument are set up, and an energizing / energizing rod is set at a vertical distance H from the center of the energizing / energizing simulation device; wherein, the output ripple of the AC / DC high-voltage power supply is below 1%, and the voltage stability is below 1% (only due to the output voltage change rate caused by the input source voltage variation within 10%).

[0039] 3. Start the AC / DC high voltage power supply and let its voltage rise slowly until the high voltage on the discharge electrode reaches the discharge electrode voltage U (KV).

[0040] 4. With the oscilloscope and DC high-voltage power supply turned on simultaneously, measure the maximum value I (μA) of the discharge current received by the oscilloscope within a measurement time T (s).

[0041] 5. Calculate the current value per unit length using the formula:

[0042] ①When L≤λ:

[0043] ②When L>λ:

[0044] Where L(mm) represents the effective power-dissipating / power-applying length of the power-dissipating / power-applying rod, and λ(mm) represents the length of the simulated power-dissipating / power-applying body.

[0045] 6. Test the various discharge electrode spacings D1, D2, D3…D according to the above steps. m During setup, the maximum currents I1, I2, I3…I received by the oscilloscope are... m .

[0046] 7. Calculate the electrode spacings D1, D2, D3…D for various discharge electrodes. m The maximum current density received under the following conditions: J1, J2, J3…J m After calculation, take J1, J2, J3...J m The maximum value in the value corresponds to the electrode spacing D.

[0047] Figure 2 The resistors used are non-inductive resistors with a resistance of 100Ω and an allowable error of 5%; the effective frequency band of the oscilloscope is above 100MHz.

[0048] Figure 2 The AC / DC high-voltage power supply shown is a matching high-voltage power supply for the power suppression / power-on rod. The output high voltage is infinitely adjustable and the output high voltage value and output current value can be displayed in real time.

[0049] The high-voltage power supply and the extinguishing / energizing rod are connected by a high-voltage cable. The high-voltage cable and the extinguishing / energizing rod can be connected by welding to achieve a non-detachable electrical connection, or by adding an external high-voltage connector to achieve a detachable electrical connection.

[0050] The current elimination / energizing rod or discharge electrode and Figure 3 The simulated surfaces of the objects being electrified / charged are perpendicular, and the vertical distance between them is the electrification / charge distance H.

[0051] The distance between the central axes of the two discharge electrodes is the electrode spacing D.

[0052] The specific structure of the above-mentioned discharge / charge simulation device is shown in Figure 3 and Figure 4 .

[0053] Specifically, the discharge / charge object simulation device comprises a stainless steel U-shaped grounding plate, the bottom of which is clamped with a Teflon insulating piece, and only grounded through a grounding socket to avoid other stray current flowing in.

[0054] The stainless steel U-shaped grounding plate also needs to pass through a 100-ohm non-inductive resistor and then be connected to the ground; an oscilloscope is connected in parallel across the non-inductive resistor to observe the discharge voltage (current), so as to calculate the discharge current density J under different electrode spacings, and select the maximum value from them to determine the optimal electrode spacing D.

[0055] The surface of the stainless steel U-shaped grounding plate can be coated with a layer of plastic film to facilitate the simulation of the discharge / charge effect on the surface of the material.

[0056] The technical solution determines the optimal discharge electrode spacing between two adjacent electrodes by conducting discharge tests on the discharge / charge simulation device under different electrode spacings of two adjacent electrodes, and uses the maximum current density as a parameter to achieve the purpose of increasing the ion quantity generated by the ion generating device under the same voltage, so that the discharge / charge rod releases the most ions within its length range and achieves the maximum discharge efficiency.

[0057] The technical solution can be widely used in the design and manufacturing field of various specifications of discharge / charge rods.

Claims

1. A method for determining the electrode spacing of an ion generator, characterized in that: 1) Fix or determine the values ​​of relevant test parameters; 2) Set up an AC / DC high-voltage power supply, a simulated object to be energized / energized, and testing instruments, and place an energizing / energizing rod at a vertical distance H from the center of the simulated object to be energized / energized; 3) The discharge electrode of the power-off / power-on rod is set perpendicular to the surface of the simulated object to be powered off / on, and the vertical distance between the two is the power-off / power-on distance H; 4) Connect the output terminal of the AC / DC high voltage power supply to the corresponding power input terminal of the power suppression / power-on rod; 5) Start the AC / DC high voltage power supply, allowing its voltage to rise slowly until the high voltage on the discharge electrode reaches the discharge electrode voltage U; 6) The test instrument and the AC / DC high voltage power supply are turned on simultaneously, and the maximum value I of the discharge current received by the test instrument within the measurement time T (s) is measured. 7) Calculate the current value per unit length; 8) Test the various discharge electrode spacings D1, D2, D3…D according to the above steps. m During setup, the maximum currents I1, I2, I3…I received by the test instrument are... m ; 9) Calculate the electrode spacings D1, D2, D3…D for various discharge electrodes. m The maximum current density received under the following conditions: J1, J2, J3…J m ; 10) Take J1, J2, J3...J m The electrode spacing D corresponding to the maximum value in the figure is the optimal electrode spacing for the ion generator. The method for determining the electrode spacing of the ion generator involves conducting discharge tests on the energized / energized simulation device at different electrode spacings between two adjacent electrodes. The optimal electrode spacing between the two adjacent electrodes is determined using the parameter of maximum current density. This achieves the goal of increasing the amount of ions generated by the ion generator under the same voltage, allowing the energized / energized rod to release the most ions within its length range, thereby maximizing the discharge efficiency.

2. The method for determining the electrode spacing of the ion generating device according to claim 1, characterized in that: The fixed relevant test parameter values ​​include at least the effective excitation / application length L of the excitation / application rod, the tip diameter d of the discharge electrode, the discharge electrode voltage U, and the excitation / application distance H.

3. The method for determining the electrode spacing of the ion generating device according to claim 1, characterized in that the formula for calculating the current value per unit length is as follows: ①When L≤λ: ②When L>λ: in, L represents the effective power-dissipating / power-applying length of the power-dissipating / power-applying rod, and λ represents the length of the simulated power-dissipating / power-applying body.

4. The method for determining the electrode spacing of the ion generating device according to claim 1, characterized in that: The testing instrument mentioned is an oscilloscope.

5. The method for determining the electrode spacing of the ion generating device according to claim 4, characterized in that: A resistor is connected in parallel between the two input terminals of the oscilloscope.

6. The method for determining the electrode spacing of the ion generating device according to claim 5, characterized in that: The resistor mentioned is a non-inductive resistor.

7. The method for determining the electrode spacing of the ion generating device according to claim 1, characterized in that: The simulated object to be electrified / energized includes a U-shaped ground plane made of stainless steel. The U-shaped grounding plate is grounded only through a grounding socket to prevent the inflow of other stray currents.

8. The method for determining the electrode spacing of the ion generating device according to claim 7, characterized in that: The U-shaped grounding plate is connected to the ground via a non-inductive resistor.

9. The method for determining the electrode spacing of the ion generating device according to claim 8 is characterized in that an oscilloscope is connected in parallel across the non-inductive resistor to observe the discharge voltage or current, thereby calculating the discharge current density under different electrode spacings, and selecting the maximum value to determine the optimal electrode spacing D.

10. The method for determining the electrode spacing of the ion generating device according to claim 7, characterized in that: A plastic film is applied to the surface of the U-shaped ground plane to facilitate the simulation of the static elimination / static effect on the material surface.

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