CN112378995B - Electric spark generating device, energy testing device and electric spark generating system - Google Patents
Electric spark generating device, energy testing device and electric spark generating system Download PDFInfo
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Abstract
The invention provides an electric spark generating device, an energy testing device and an electric spark generating system, which comprise: the low-voltage arc continuation module, the high-voltage breakdown module and the discharge electrode module; the discharge electrode module comprises discharge electrodes, and electrode materials and electrode distances of the discharge electrodes are adjustable; the low-voltage continuous arc module is connected with the discharge electrode module and is used for generating electric sparks between the discharge electrodes; the discharge energy required for generating the electric spark is adjustable; the high-voltage breakdown module is connected with the discharge electrode module and used for generating breakdown energy so as to enable air between the discharge electrodes to be broken down; wherein the breakdown energy is adjustable. The invention can adjust the discharge energy of the low-voltage continuous arc loop and the breakdown energy of the high-voltage breakdown loop, and is suitable for discharge under different discharge electrode parameter working conditions.
Description
Technical Field
The invention relates to the technical field of electric spark generation, in particular to an electric spark generation device, an energy testing device and an electric spark generation system.
Background
Electric sparks are dangerous accident hazards, and can cause serious fire disasters and explosion disasters; meanwhile, the electric spark is also an important ignition mode and has wide application in the fields of energy, power and the like. The electric spark generating device is a key means for researching electric spark safety control and energy utilization, and the electric spark generating device based on the high-voltage breakdown and low-voltage arc continuation principle is an advanced and more applied electric spark generating technology at present. The discharge energy of a high-voltage breakdown loop of the existing electric spark generating device is generally a fixed value and cannot be adjusted according to special environments, electrode materials and electrode distances, the electric spark energy generated by a low-voltage arc continuous loop is inaccurate to test, the electric spark energy is complex to calculate and has large processing errors, and therefore the existing electric spark generating device is not suitable for working conditions that parameters such as discharge electrode materials or electrode gaps need to be accurately adjusted.
Disclosure of Invention
In view of the above, the present invention provides an electric spark generating device, an energy testing device and an electric spark generating system, which can adjust the discharge energy of a low-voltage continuous arc loop and the breakdown energy of a high-voltage breakdown loop, and are suitable for discharge under different discharge electrode parameter conditions.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides an electric spark generating apparatus, including: the low-voltage arc continuation module, the high-voltage breakdown module and the discharge electrode module; the discharge electrode module comprises discharge electrodes, and electrode materials and electrode distances of the discharge electrodes are adjustable; the low-voltage continuous arc module is connected with the discharge electrode module and is used for generating electric sparks between the discharge electrodes; the discharge energy required for generating the electric spark is adjustable; the high-voltage breakdown module is connected with the discharge electrode module and used for generating breakdown energy so as to enable air between the discharge electrodes to be broken down; wherein the breakdown energy is adjustable.
In one embodiment, the low-voltage continuous arc module comprises an adjustable resistor, a high-voltage power supply unit and a plurality of first capacitors connected in parallel; the low-voltage arc continuation module adjusts discharge energy by switching on different first capacitors and adjusting the output voltage of the high-voltage power supply unit, and controls the discharge time of the first capacitors by adjusting the adjustable resistors.
In one embodiment, the high voltage power supply unit is used for providing charging power for the first capacitor in the low voltage continuous arc module.
In one embodiment, the high voltage breakdown module includes a boost coil and a plurality of second capacitors connected in parallel; the high-voltage breakdown module adjusts breakdown energy by switching on different second capacitors; after starting ignition, the electric energy released by the switched-on second capacitor reaches the discharge electrode after passing through the booster coil, so that the air between the discharge electrodes is broken down.
In one embodiment, the electric spark generating device further comprises a power supply module; the power supply module is respectively connected with the low-voltage arc continuation module and the high-voltage breakdown module and is used for providing electric energy for the high-voltage power supply unit of the low-voltage arc continuation module and the high-voltage breakdown module.
In a second aspect, an embodiment of the present invention provides an energy testing apparatus, including a measuring module and a calculating module; the measuring module is connected with the electric spark generating device and used for obtaining the instantaneous voltage value and the instantaneous current value of the instantaneous discharge electrode when the electric spark occurs; the calculation module is connected with the measurement module and used for determining the electric spark energy according to the instantaneous voltage value and the instantaneous current value.
In one embodiment, the measurement module comprises: a high-voltage probe, a current probe and an oscilloscope; the high-voltage probes are arranged at two ends of the discharge electrode and used for acquiring the instantaneous voltage value of the discharge electrode at the moment of electric spark occurrence; the current probe is arranged in a discharge electrode loop and used for acquiring the instantaneous current value at the moment of electric spark occurrence; the oscilloscope is respectively connected with the high-voltage probe and the current probe and is used for acquiring and storing the instantaneous voltage value and the instantaneous current value.
In one embodiment, the calculation module includes electronics for obtaining an instantaneous voltage value and an instantaneous current value from an oscilloscope and determining the spark energy based on the instantaneous voltage value and the instantaneous current value.
In one embodiment, the calculation module is configured to calculate the spark energy according to the following formula:
wherein the content of the first and second substances,Erepresenting the spark energy;nthe number of sampling points is represented,n=1,2,3……N；U n representing the instantaneous voltage value of the sampling point;I n representing the instantaneous current value of the sampling point.
In a third aspect, an embodiment of the present invention provides an electric spark generation system, including the electric spark generation apparatus provided in any one of the first aspects and the energy testing apparatus provided in any one of the second aspects.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides an electric spark generating device, an energy testing device and an electric spark generating system, wherein the electric spark generating device comprises: the low-voltage arc continuation module, the high-voltage breakdown module and the discharge electrode module; the discharge electrode module comprises discharge electrodes, and electrode materials and electrode distances of the discharge electrodes are adjustable; the low-voltage continuous arc module is connected with the discharge electrode module and is used for generating electric sparks between the discharge electrodes; the discharge energy required for generating the electric spark is adjustable; the high-voltage breakdown module is connected with the discharge electrode module and used for generating breakdown energy so as to enable air between the discharge electrodes to be broken down; wherein the breakdown energy is adjustable. The electrode material and the electrode distance of the discharge electrode in the electric spark generating device can be adjusted, so that the electric spark generating device is suitable for discharge under different discharge electrode parameter working conditions; meanwhile, the discharge energy of the low-voltage continuous arc module and the breakdown energy of the high-voltage breakdown module can be adjusted, so that the electric spark energy can be accurately controlled, and the influence of the breakdown energy on the discharge spark energy is reduced.
The energy testing device provided by the embodiment of the invention comprises a measuring module and a calculating module; the measuring module is connected with the electric spark generating device and used for obtaining the instantaneous voltage value and the instantaneous current value of the instantaneous discharge electrode when the electric spark occurs; the calculation module is connected with the measurement module and used for determining the electric spark energy according to the instantaneous voltage value and the instantaneous current value. The energy testing device can acquire the instantaneous voltage value and the instantaneous current value of the electrode discharging instantly when the electric spark occurs through the measuring module at high precision, and calculate the energy of the electric spark according to the acquired data, thereby reducing the error generated by data measurement and improving the precision of the electric spark energy testing.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an electric spark generating apparatus according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of another electric spark generating device according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an electric spark generating device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an energy testing apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electric spark generation system according to an embodiment of the present invention.
Icon:
101-low voltage arc continuing module; 102-a high voltage breakdown module; 103-a discharge electrode module; 104-a power supply module; 401-a measurement module; 402-a calculation module; 100-an electric spark generating device; 400-energy test device.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An electric spark generating device based on the high-voltage breakdown and low-voltage arc continuation principle is an electric spark generating technology which is advanced and applied more at present. The electric spark generating device discharges instantaneously through the small capacitance of the high-voltage loop, and the air between the discharge electrodes is broken down to form a passage after the voltage is boosted, so that the electric spark is generated by utilizing the large capacitance of the low-voltage continuous arc loop. However, the breakdown energy of the high-voltage breakdown loop of the existing electric spark generating device is generally a fixed value and cannot be adjusted according to a special environment, an electrode material and an electrode distance, the electric spark energy generated by the low-voltage arc-continuing loop is inaccurate to test, the electric spark energy is complicated to calculate and has large processing errors, and therefore, the existing electric spark generating device is not suitable for working conditions where parameters such as a discharge electrode material or an electrode gap need to be accurately adjusted.
Based on this, the electric spark generation device, the energy testing device and the electric spark generation system provided by the embodiment of the invention can adjust the discharge energy of the low-voltage continuous arc loop and the breakdown energy of the high-voltage breakdown loop, and are suitable for discharge under different discharge electrode parameter working conditions.
To facilitate understanding of the present embodiment, first, a detailed description is given of an electric spark generating apparatus disclosed in the present embodiment, referring to a schematic structural diagram of an electric spark generating apparatus shown in fig. 1, which schematically illustrates the apparatus including: a low-voltage continuous arc module 101, a high-voltage breakdown module 102 and a discharge electrode module 103; the discharge electrode module 103 comprises discharge electrodes, and electrode materials and electrode distances of the discharge electrodes are adjustable; the low-voltage arc continuation module 101 is connected with the discharge electrode module 103 and used for generating electric sparks between discharge electrodes; the discharge energy required for generating the electric spark is adjustable; the high-voltage breakdown module 102 is connected with the discharge electrode module 103 and is used for generating breakdown energy so that air between the discharge electrodes is broken down; wherein the breakdown energy is adjustable.
In one embodiment, the low-voltage arc continuing module 101 has a function of generating an electric spark, and the discharge energy required for generating the electric spark can be adjusted, specifically, the function of adjusting the discharge energy can be realized by adjusting the capacitance and the charging voltage of the capacitor; the high voltage breakdown module 102 charges the capacitor, when ignition is started, the capacitor starts to discharge, and the capacitor discharge instantaneous voltage is very high, so that air between the discharge electrodes of the discharge electrode module 103 is broken down to form a high voltage loop. In order to ensure that the two ends of the discharge electrode are smoothly broken down to generate the electric spark, the breakdown energy generated by the high-voltage breakdown module 102 can be adjusted by adjusting the capacitor in this embodiment.
The discharge electrode module 103 is a location where an electric spark is generated, and mainly includes a discharge electrode. The discharge electrode is composed of two conductor probes, and the discharge electrode can be broken down to form a passage at the discharge moment of the high-voltage breakdown module 102, so that the capacitor in the low-voltage continuous arc module 101 discharges to generate electric sparks. The breakdown energy of the discharge electrode is related to the electrode material, the electrode distance, the environmental temperature, the humidity and other parameters, and based on the parameters, in order to meet various different working conditions and improve the discharge precision of the electric spark generating device, the electrode material, the electrode distance and other parameters of the discharge electrode module 103 can be adjusted.
The embodiment of the invention provides an electric spark generating device, which comprises: the low-voltage arc continuation module, the high-voltage breakdown module and the discharge electrode module; the discharge electrode module comprises discharge electrodes, and electrode materials and electrode distances of the discharge electrodes are adjustable; the low-voltage continuous arc module is connected with the discharge electrode module and is used for generating electric sparks between the discharge electrodes; the discharge energy required for generating the electric spark is adjustable; the high-voltage breakdown module is connected with the discharge electrode module and used for generating breakdown energy so as to enable air between the discharge electrodes to be broken down; wherein the breakdown energy is adjustable. The electrode material and the electrode distance of the discharge electrode in the electric spark generating device can be adjusted, so that the electric spark generating device is suitable for discharge under different discharge electrode parameter working conditions; meanwhile, the discharge energy of the low-voltage continuous arc module and the breakdown energy of the high-voltage breakdown module can be adjusted, so that the electric spark energy can be accurately controlled, and the influence of the breakdown energy on the discharge spark energy is reduced.
In order to accurately control the discharge energy of the low-voltage continuous arc module and improve the protection of a low-voltage continuous arc loop, the low-voltage continuous arc module provided by the embodiment of the invention comprises an adjustable resistor, a high-voltage power supply unit and a plurality of first capacitors connected in parallel. In aIn an embodiment, the first capacitor may be a capacitor of different specifications or a capacitor of the same specification, and the power supply voltage of the high-voltage power supply unit may be adjustable, and is used to provide charging power for the first capacitor in the low-voltage continuous arc module to charge the first capacitor. The low-voltage arc continuation module can adjust discharge energy by switching on different first capacitor capacities and adjusting the output voltage (namely, charging voltage) of the high-voltage power supply module, and particularly can select the number and specification of the switched-on capacitors and the charging voltage according to the required discharge energy; the low-voltage arc continuing module is also connected with an adjustable resistor in series, and the low-voltage arc continuing module can control the discharge time of the first capacitor by adjusting the adjustable resistor, specifically according to the discharge time of the capacitort=RC（RWhich represents the resistance value of the adjustable resistor,Ca capacitance value representing the switched-on first capacitor), the discharge time of the first capacitor can be changed by adjusting the resistance value of the adjustable resistor after the switched-on first capacitor is determined.
Further, considering that in the existing device, the breakdown energy generated by the capacitor discharge of the high-voltage breakdown module is small, only two ends of the discharge electrode can be broken down, and whether the discharge electrode can be broken down is also related to the electrode material, the electrode spacing, the ambient temperature and the humidity of the discharge electrode, based on this, in order to ensure that the two ends of the discharge electrode are smoothly broken down, and the breakdown energy just reaches the critical point of the energy required by the breakdown electrode, and reduce the interference of the breakdown energy on the discharge of the low-voltage follow-up arc module, the high-voltage breakdown module provided by the embodiment of the invention comprises a booster coil and a plurality of second capacitors connected in parallel; the high-voltage breakdown module adjusts breakdown energy by switching on different second capacitors; after starting ignition, the electric energy released by the switched-on second capacitor reaches the discharge electrode after passing through the booster coil, so that the air between the discharge electrodes is broken down.
In one embodiment, the second capacitor may be a capacitor with different specifications or a capacitor with the same specification, and in practical application, different numbers of capacitors may be selectively connected according to the required breakdown energy, so that the function of adjusting the capacitors to change the breakdown energy can be achieved, and the accurate control of the discharge energy of the electric spark generating device is realized; when the charging of the second capacitor is completed, the second capacitor starts to discharge after the ignition control is started, and after the voltage is boosted by the boosting coil, higher voltage can be generated, so that the air between the discharge electrodes is broken down.
Further, on the basis of fig. 1, another electric spark generating apparatus is provided in the embodiment of the present invention, referring to a schematic structural diagram of another electric spark generating apparatus shown in fig. 2, which further includes a power module 104; the power module 104 is connected to the low-voltage arc continuation module 101 and the high-voltage breakdown module 102, respectively, and is configured to provide electric energy for the low-voltage arc continuation module 101 and the high-voltage breakdown module 102. In one embodiment, the power module may provide power to the high voltage power supply unit and the high voltage breakdown module of the low voltage sustained arc module. Specifically, the power module comprises a power supply, the power supply is rectified by a rectifying circuit and then respectively provides electric energy for the high-voltage power supply unit and the high-voltage breakdown module, and then the high-voltage power supply unit can provide charging electric energy for the first capacitor of the low-voltage continuous arc module.
For the convenience of understanding, the embodiment of the invention also provides a circuit schematic diagram of the electric spark generating device, and the electric spark generating device is shown in fig. 3. A power supply (such as a 220V power supply in fig. 3) is converted into direct current through a rectifying circuit, and charges the capacitors connected among the capacitors C7, C8, C9 and C10, and specifically, the connected capacitors can be adjusted through switches S26 to S28, so as to realize the function of adjusting the breakdown energy; the high-voltage power supply unit (0- +1600V (DC)) is switched on, the high-voltage capacitor charging switch S13 is switched on to charge the capacitors switched on in the capacitors C2, C3, C4, C5 and C6, and the switched-on capacitors can be specifically adjusted through the charging switch S14 to the charging switch S18, so that the function of adjusting the discharging energy is realized.
Assume that the switched-on capacitors are selected to be the capacitor C7, the capacitor C8, the capacitor C6 and the capacitor C5 according to the magnitude of the discharge energy and the breakdown energy. In specific application, firstly, the charging switches S18 and S17 and the discharging switches S22 and S21 are closed, then the high-voltage capacitor charging switch S13 is closed, the charging voltage of the high-voltage power supply unit is adjusted, the capacitors C6 and C5 are charged, and the S13 is disconnected after charging; at the same time, the combination switch S28 is closed to charge the capacitors C7, C8. After the charging is completed, next, the discharge switch S25 is closed, and the capacitors C7 and C8 break down the discharge electrode (such as the ignition needle in fig. 3) to form a passage through a discharge circuit; then, the capacitor C5 and the capacitor C6 are discharged, and a spark is generated between the discharge electrodes.
In addition, in order to prevent the circuit from being damaged by the high voltage generated in the moment of discharging the capacitor, in the electric spark generating device provided in the embodiment of the present invention, the circuit may be protected by the high voltage silicon stack, specifically, as shown in fig. 3, the high voltage breakdown circuit further includes a high voltage silicon stack D3, and the low voltage sustained arc circuit further includes a high voltage silicon stack D4. The high-voltage silicon stack is a silicon high-frequency high-voltage rectifier diode, and when a capacitor in a high-voltage breakdown loop discharges, the high-voltage silicon stack D3 can prevent high current generated during the discharge of the capacitor from flowing into a low-voltage arc continuation loop, so that components in the low-voltage arc continuation loop are damaged; meanwhile, when the capacitor in the low-voltage continuous arc loop discharges, the high-voltage silicon stack D4 can also prevent high current generated when the capacitor discharges from flowing into the high-voltage breakdown loop, so that components in the high-voltage breakdown loop are damaged.
In summary, compared with the existing electric spark generating device, the electric spark generating device provided by the embodiment of the invention has the advantages that the discharge energy and the discharge time of the low-voltage arc continuing module are adjustable, and the breakdown energy of the high-voltage breakdown module, the electrode material of the discharge electrode and the electrode distance are also adjustable, so that the electric spark generating device can be suitable for breakdown of the discharge electrode under different electrode parameter working conditions, the breakdown energy is the lowest, the influence on the discharge spark energy is reduced, and the precision of the discharge energy of the electric spark generating device is improved.
Considering that, the electric spark energy of the existing electric spark generating device is calculated only by a capacitance discharge energy formula:
because energy loss in an actual circuit is large, the electric spark energy calculated by the existing method has large error and low reference value. In addition, in the prior art, the electric spark energy is calculated by measuring the voltage and the current at the moment of electric spark generation. The current test generally adopts series connection of a non-inductive small resistor in a capacitance loop, calculates the discharge instantaneous current by testing the voltage at two ends of the resistor,the measurement mode of introducing the sampling resistor brings certain interference to a discharge loop, and the energy calculation error is large.
Based on this, an embodiment of the present invention further provides an energy testing apparatus, and referring to a schematic structural diagram of an energy testing apparatus shown in fig. 4, the energy testing apparatus is schematically illustrated to include: a measurement module 401 and a calculation module 402; the measuring module 401 is connected with the electric spark generating device and is used for acquiring an instantaneous voltage value and an instantaneous current value of an instantaneous discharge electrode when the electric spark occurs; the calculation module 402 is connected to the measurement module 401 for determining the spark energy from the instantaneous voltage value and the instantaneous current value.
The energy testing device provided by the embodiment of the invention can acquire the instantaneous voltage value and the instantaneous current value of the electric spark generation instantaneous discharge electrode at high precision through the measuring module, and calculate the electric spark energy according to the acquired data, thereby reducing the error generated by data measurement and improving the precision of the electric spark energy test.
In one embodiment, the measurement module, i.e. the voltage current measurement module, comprises: a high-voltage probe, a current probe and an oscilloscope; the high-voltage probes are arranged at two ends of the discharge electrode and used for acquiring the instantaneous voltage value of the discharge electrode at the moment of electric spark occurrence; the current probe is arranged in a discharge electrode loop and used for acquiring the instantaneous current value at the moment of electric spark occurrence; the oscilloscope is respectively connected with the high-voltage probe and the current probe and is used for acquiring and storing the instantaneous voltage value and the instantaneous current value.
Specifically, the high-voltage probe can be a Tektronix P6015A high-voltage probe, has a measurement acquisition frequency of over 75 MHz, and is used for measuring the instantaneous voltage values at two ends of an electric spark generation instantaneous discharge electrode; the current probe can be a PINCECH-PT 720 coil type non-inductive current tester, and the instantaneous current value of the circuit is measured at the discharge moment of the discharge electrode, in the embodiment, the current tester adopts a coil type and is not connected to a discharge loop, so that the interference and the error caused by the test can be reduced; the oscilloscope can be a Tektronix MSO 2024B type digital storage oscilloscope which is connected with the high-voltage probe and the current probe and collects and stores an instantaneous voltage value, an instantaneous current value and voltage and current data waveforms.
Further, the calculation module, i.e. the energy calculation module, comprises electronics for obtaining an instantaneous voltage value and an instantaneous current value from the oscilloscope and determining the energy of the electric spark based on the instantaneous voltage value and the instantaneous current value. In one embodiment, the electronic device may be a computer, and the computer has the upper software of the LABVIEW installed therein. The oscilloscope is connected with the computer through a USB connecting wire, and the instantaneous voltage value and the instantaneous current value acquired by the oscilloscope are transmitted to LABVIEW upper software; or the calculation module can also comprise a communication line, the oscilloscope is in communication connection with the computer by utilizing the communication line, and the instantaneous voltage value and the instantaneous current value acquired by the oscilloscope are transmitted to the LABVIEW upper software. The LABVIEW upper software can process, analyze and calculate the acquired data to obtain the electric spark energy.
Considering that the electric spark generated by the electrode discharge is completed in a very short time and the instantaneous voltage and current changes greatly due to the instantaneous voltage valueU(t) And instantaneous current valueI(t) The function is a continuous function in a time domain, so that the data measured by the measuring module needs to be filtered and smoothed, and then interval sampling calculation is carried out. Based on this, the energy testing device provided by the embodiment of the present invention may directly calculate the electric spark energy by using a sampling integration method, wherein the electric spark energy sampling integration calculation may be calculated in the upper software of the LABVIEW by using a programmed program, and a calculation formula is as follows:
wherein the content of the first and second substances,Erepresenting the spark energy;nthe number of sampling points is represented,n=1,2,3……N；U n representing the instantaneous voltage value of the sampling point;I n representing the instantaneous current value of the sampling point. Specifically, the amount of sampling data may be adjusted according to the calculation accuracy.
In addition, the integration method can be directly adopted to calculate the electric spark energy, and the calculation formula is as follows:
wherein the content of the first and second substances,U(t) Representing the instantaneous voltage value across the discharge electrode;I(t) Representing the instantaneous current value;tindicating the discharge time (i.e. the duration of the discharge spark).
In summary, the energy testing device provided in the embodiments of the present invention can utilize the high-precision high-voltage probe and the coil type non-inductive current probe to test the voltage and current values at the moment of the occurrence of the electric spark with high precision, and perform filtering and smoothing processing and sampling integral calculation on the collected data through the upper software of the LABVIEW to obtain a high-precision electric spark energy testing value.
An embodiment of the present invention further provides an electric spark generation system, which is shown in fig. 5 and includes an electric spark generation apparatus 100 and an energy testing apparatus 400. The electric spark generating apparatus 100 includes: the device comprises a power supply module 104, a high-voltage breakdown module 102, a low-voltage continuous arc module 101 and a discharge electrode module 103; the energy testing apparatus 400 includes: a measurement module 401 and a calculation module 402.
According to the electric spark generation system provided by the embodiment of the invention, the electrode material and the electrode distance of the discharge electrode in the electric spark generation device can be adjusted, so that the electric spark generation system is suitable for discharge under different discharge electrode parameter working conditions; meanwhile, the discharge energy of the low-voltage continuous arc module and the breakdown energy of the high-voltage breakdown module can be adjusted, so that the electric spark energy can be accurately controlled, and the influence of the breakdown energy on the discharge spark energy is reduced; the energy testing device can collect the instantaneous voltage value and the instantaneous current value of the electric spark generation instantaneous discharge electrode at high precision through the measuring module, and calculate the electric spark energy according to the collected data, thereby reducing the error generated by data measurement and improving the precision of the electric spark energy testing.
For convenience of understanding, the embodiment of the present invention further provides a specific implementation flow of an electric spark generation system, which mainly includes the following steps 1 to 5:
step 1: adjusting the electrode material and the electrode distance of the discharge electrode.
Step 2: and switching on the low-voltage continuous arc module, adjusting the output voltage of the high-voltage power supply unit and the resistance value of the adjustable resistor, and switching on the first capacitor for charging.
Specifically, before the power supply is switched on, the magnitude of the discharge energy and the discharge time need to be determined, that is, the preset discharge energy and the preset discharge time are determined; adjusting the resistance value of the adjustable resistor according to the preset discharging time, determining the number of the first capacitors to be connected, simultaneously connecting the first capacitors with corresponding number according to the preset discharging energy, and adjusting the output voltage of the high-voltage power supply unit to the charging voltage required by the preset discharging energy; then, a high-voltage power supply unit of the low-voltage arc continuing module (low-voltage arc continuing loop) is switched on to charge the first capacitor.
And step 3: and switching on the high-voltage breakdown module, and switching on the second capacitor for charging.
Specifically, the required second capacitor may be selected according to the breakdown energy required for breaking down the discharge electrode, and the power supply of the high-voltage breakdown module is turned on to charge the selected second capacitor.
And 4, step 4: after the low-voltage arc continuing module and the high-voltage breakdown module are charged, the high-voltage power supply unit of the low-voltage arc continuing module is closed, and the energy testing device is debugged to be in a state to be triggered.
In one embodiment, the commissioning of the energy testing device includes the following steps 41 to 43:
step 41: high voltage probes are installed at both ends of the discharge electrode.
Step 42: the current probe was placed in the discharge electrode circuit.
Step 43: and respectively connecting the high-voltage probe and the current probe with a data acquisition channel 1 and a data acquisition channel 2 of the oscilloscope.
And 5: starting ignition, collecting voltage and current data at the moment of electric spark occurrence, and calculating electric spark energy.
In one embodiment, after ignition is initiated,a second capacitor of the high-voltage breakdown module discharges, and instantaneous high voltage is formed at two ends of a discharge electrode through the booster coil, so that the discharge electrode is broken down to form a passage; and discharging the first capacitor of the low-voltage arc continuation module to generate electric sparks between the discharge electrodes to finish discharging. Meanwhile, a high-voltage probe acquires an instantaneous voltage value of an electrode for instantaneous discharge of electric spark, a current probe acquires an instantaneous current value, an oscilloscope is in communication connection with a computer through a data wire (communication wire), voltage and current data (the instantaneous voltage value and the instantaneous current value) acquired by the oscilloscope are transmitted to LABVIEW software on the computer, and LABVIEW upper software performs filtering smoothing processing on the voltage and current data, then performs interval sampling and performs interval sampling according to a formula
And calculating to obtain the electric spark energy value.
The system provided by the embodiment of the present invention has the same implementation principle and technical effect as the foregoing device embodiment, and for the sake of brief description, reference may be made to the corresponding contents in the foregoing device embodiment for the part of the system embodiment that is not mentioned.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. An electric spark generating device, comprising: the low-voltage arc continuation module, the high-voltage breakdown module and the discharge electrode module;
the discharge electrode module comprises discharge electrodes, and electrode materials and electrode distances of the discharge electrodes are adjustable;
the low-voltage continuous arc module is connected with the discharge electrode module and is used for generating electric sparks between the discharge electrodes; the discharge energy required for generating the electric spark is adjustable;
the high-voltage breakdown module is connected with the discharge electrode module and used for generating breakdown energy so as to enable air between the discharge electrodes to be broken down; wherein the breakdown energy is tunable;
the low-voltage arc continuation module comprises an adjustable resistor, a high-voltage power supply unit and a plurality of first capacitors connected in parallel; the low-voltage arc continuation module adjusts the discharge energy by switching on different first capacitors and adjusting the output voltage of the high-voltage power supply unit, and controls the discharge time of the first capacitors by adjusting the adjustable resistors;
the high-voltage breakdown module comprises a booster coil and a plurality of second capacitors connected in parallel;
before a power supply is switched on, determining the discharge energy and the discharge time, adjusting the resistance value of the adjustable resistor and determining the number of the first capacitors which are switched on according to the discharge time, adjusting the output voltage of the high-voltage power supply unit to the charging voltage required by the discharge energy, and charging the first capacitors through the high-voltage power supply unit;
after the first capacitor is charged, determining the second capacitor to be switched on according to the breakdown energy, and switching on a power supply of the high-voltage breakdown module to charge the switched-on second capacitor;
after ignition is started, the second capacitor discharges, and instantaneous high voltage is formed at two ends of the discharge electrode through the booster coil, so that the discharge electrode breaks down to form a passage; the first capacitor discharges, and electric sparks are generated between the discharge electrodes to finish the discharge.
2. The electric spark generation device according to claim 1, wherein the high voltage power supply unit is configured to provide charging power to the first capacitor in the low voltage continuous arc module.
3. The spark generation device according to claim 1, wherein the high voltage breakdown module adjusts the breakdown energy by switching on different second capacitances;
after ignition is started, electric energy released by the second capacitor which is switched on reaches the discharge electrode after passing through the boosting coil, so that air between the discharge electrodes is broken down.
4. The electric spark generation device according to claim 1, further comprising a power supply module;
the power supply module is respectively connected with the low-voltage arc continuation module and the high-voltage breakdown module and is used for providing electric energy for the high-voltage power supply unit of the low-voltage arc continuation module and the high-voltage breakdown module.
5. An electric spark generating system comprising an electric spark generating apparatus as claimed in any one of claims 1 to 4 and an energy testing apparatus.
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