A high voltage ignition control circuit

Abstract

The application provides a high-voltage ignition control circuit, which comprises an ignition coil and an ignition control circuit, a primary coil of the ignition coil is connected with the ignition control circuit, a secondary coil of the ignition coil is respectively connected with two electrode terminals of a spark plug, the ignition control circuit comprises a charge-discharge circuit, the charge-discharge circuit is electrically connected with the primary coil of the ignition coil, a spark duration control module and a spark energy control module are further arranged on the charge-discharge circuit, and the application adopts a pulse high-voltage ignition control mode, a periodically changed high voltage is generated between the output electrodes of the secondary winding of a second transformer, so that the gas discharge of the electrode gap is broken down, and then the hydrogen-oxygen mixture is ignited, and the operation is simple, safe and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of launching technology, in particular to a high-voltage ignition control circuit. BACKGROUND

[0002] Due to the limitation of physical properties of solid propellant, the muzzle velocity generated by the combustion work of the solid propellant in a closed container reaches the theoretical limit. In view of the practical demand for high muzzle velocity of launching technology, the research on new mechanism launching technology is carried out, that is, the high-temperature and high-pressure light gas is formed by the combustion of hydrogen and oxygen mixture and then expands to do work, so as to obtain extremely high muzzle velocity, which provides a new way and method for high muzzle velocity launching technology. The hydrogen-oxygen mixture is flammable and explosive gas, and a small spark energy can cause the combustion and explosion of the hydrogen-oxygen mixture. In order to deeply carry out the research on the combustion mechanism of hydrogen and oxygen, analyze the influence of ignition energy and action time on the combustion process of hydrogen and oxygen in a closed container, and lay a foundation for the research on the combustion mechanism of hydrogen and oxygen in a closed container, the research on the ignition control circuit of hydrogen and oxygen combustion is needed. SUMMARY

[0003] The technical problem to be solved by the present application is to deeply carry out the research on the combustion mechanism of hydrogen and oxygen, analyze the influence of ignition energy and action time on the combustion process of hydrogen and oxygen in a closed container, and lay a foundation for the research on the combustion mechanism of hydrogen and oxygen in a closed container, the research on the ignition control circuit of hydrogen and oxygen combustion is needed. In order to solve the above problems, a high-voltage ignition control circuit is provided.

[0004] The purpose of the present application is achieved in the following manner:

[0005] A high-voltage ignition control circuit, the circuit comprises an ignition coil and an ignition control circuit, the primary coil of the ignition coil is connected with the ignition control circuit, and the secondary coil of the ignition coil is connected with two electrode ends of a spark plug respectively; the ignition control circuit comprises a charge and discharge circuit, and the charge and discharge circuit is electrically connected with the primary coil of the ignition coil; the charge and discharge circuit is further provided with an ignition time length control module and an ignition energy control module; the ignition time length control module is a time relay KT, and the ignition energy control module is a first transformer T1; the ignition coil is a second transformer T2; one end of the primary winding of the first transformer T1 is connected with one end of an alternating current input power source AC through a first button switch SA1, the other end of the primary winding of the first transformer T1 is connected with the other end of the alternating current input power source AC through the contact of the time relay KT, one end of the coil of the time relay KT is connected with one end of the primary winding of the first transformer T1, and the other end of the coil of the time relay KT is connected with the other end of the primary winding of the first transformer T1 through the contact of the time relay KT.

[0006] The charging and discharging circuit comprises an alternating current input power supply AC, a first button switch SA1, an ignition time length control module, an ignition energy control module, a first resistor R1, a second resistor R2, a third resistor R3, a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3, a first capacitor C1, a second capacitor C2, and a first thyristor VS1.

[0007] The voltage resistance value of the first capacitor C1 needs to be greater than 2 times of the effective value of the working voltage.

[0008] The ignition discharge period is 1 times or n times of the period of the alternating current input power supply AC.

[0009] The present application has the following advantages: compared with the prior art, the present application adopts the control mode of pulse high-voltage ignition, generates periodic high-voltage between the output electrodes of the secondary winding of the second transformer T2, thereby breaking down the gas discharge between the electrode gaps, igniting the hydrogen-oxygen mixture, and achieving the advantages of simple operation, safety and reliability; the present application adopts the mode of adjusting the number of turns of the secondary winding of the first transformer T1 to change the amplitude of the periodic high-voltage between the output electrodes of the secondary winding of the second transformer T2, thereby achieving the function of ignition energy control; and the present application adopts the mode of time relay KT power-on delay to disconnect the alternating current input power supply AC, thereby achieving the function of ignition time length control. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 The present application is a high-voltage ignition control circuit. DETAILED DESCRIPTION

[0011] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0012] It should be noted that the following detailed description is exemplary in nature and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0013] As shown in Figure 1 The present application provides a high-voltage ignition control circuit, which comprises a first transformer T1, a time relay KT, a first push-button switch SA1, an alternating current input power source AC, a first resistor R1, a second resistor R2, a third resistor R3, a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3, a first capacitor C1, a second capacitor C2, a first thyristor VS1, and a second transformer T2. The first push-button switch SA1 has an action rear contact self-locking function. The time relay KT has a coil end power-on contact delay disconnection function, and the contact delay time can be adjusted within a range of 0.01s-20s. The first transformer T1 has a voltage adjustment function by adjusting the number of turns of the secondary winding coil. When the alternating current input power source AC is a commercial power supply of 220V, the output voltage of the secondary winding of T1 can vary between 80V-240V. The first thyristor VS1 is turned on between the anode and the cathode by inputting a forward trigger voltage between the control electrode and the cathode. The second transformer T2 generates a pulse current through the repeated charging and discharging of the first capacitor C1, generates an alternating potential between the two ends of the primary winding of T2, and further generates a high voltage of more than 10,000 volts between the two ends of the secondary winding of T2.

[0014] One end of the primary winding of the first transformer T1 is connected with one end of the AC input power source AC through the first button switch SA1, the other end of the primary winding of the first transformer T1 is connected with the other end of the AC input power source AC through the time relay KT contacts, one end of the time relay KT coil is connected with one end of the primary winding of the first transformer T1, the other end of the time relay KT coil is connected with the other end of the primary winding of the first transformer T1 through the time relay KT contacts; one end of the secondary winding of the first transformer T1 is connected with one end of the primary winding of the second transformer T2 through the first resistor R1, the first rectifier diode D1 and the first capacitor C1, the tap end of the secondary winding of the first transformer T1 is connected with the other end of the primary winding of the second transformer T2 through the second rectifier diode D2; the tap end of the secondary winding of the first transformer T1 is connected with one end of the secondary winding of the first transformer T1 through the second resistor R2, the second capacitor C2, the third rectifier diode D3 and the first resistor R1; one end of the third resistor R3 is connected with one end of the second capacitor C2 and the control electrode end of the first thyristor VS1, the other end of the third resistor R3 is connected with the other end of the second capacitor C2; the anode end of the first thyristor VS1 is connected with one end of the first capacitor C1, the cathode end of the first thyristor VS1 is connected with the other end of the primary winding of the second transformer T2; the secondary winding of the second transformer T2 is connected with the two electrode ends of the spark plug respectively.

[0015] In order to make the ignition circuit work reliably, the voltage resistance value of the first capacitor C1 needs to be greater than 2 times of the effective value of the working voltage; the ignition discharge period is 1 times or n times of the AC input power source AC period.

[0016] The working principle of the present application is as follows: after the first button switch SA1 triggers an action, the ignition control circuit is connected to the commercial AC 220V to be turned on; after the coil of the time relay KT is electrified, its contact is immediately closed; the AC input power supply AC, the first button switch SA1 and the primary winding of the first transformer T1 form a circuit loop to generate alternating current, and then an alternating potential is generated at both ends of the primary winding of the first transformer T1, thereby generating an induced voltage at both ends of the secondary winding of the first transformer T1; by adjusting the number of turns of the coil of the secondary winding of the first transformer T1, the induced voltage can be changed between AC 80V-240V; during the positive half wave of the AC, the first capacitor C1 is charged through the first resistor R1 and the first rectifier diode D1, and the voltage of the first capacitor C1 gradually rises to meet the potential difference requirement of the first thyristor VS1 being positive on top and negative on bottom. The first resistor R1, the first rectifier diode D1, the first capacitor C1, the second rectifier diode D2 and the primary coil of the second transformer T2 form a charging circuit; during the negative half wave of the AC, a charging circuit is formed by the second resistor R2, the second capacitor C2, the third rectifier diode D3 and the first resistor R1, and a potential difference is formed at both ends of the third resistor R3 to provide a trigger voltage for the control electrode of the first thyristor VS1, at this time the anode and cathode of the first thyristor VS1 can be triggered to be conductive. The charge stored in the first capacitor C1 is rapidly released through the first thyristor VS1 and the primary coil of the second transformer T2, and a discharge circuit is formed by the first capacitor C1, the first thyristor VS1 and the primary coil of the second transformer T2, and the first thyristor VS1 is restored to be cut off after the discharge is completed; the on-off of the first thyristor VS1 causes the first capacitor C1 to charge and discharge repeatedly, and the pulse current generated thereby generates an alternating potential at both ends of the primary winding of the second transformer T2, thereby inducing a high voltage of more than 10,000 volts at both ends of the secondary winding of the second transformer T2; the high voltage generated at the secondary winding of the second transformer T2 breaks down the gas discharge between the electrode gaps of the spark plug, causing the local temperature of the mixture to rise sharply, the gas molecules are decomposed by heat, and a fire core is formed at the local electrode, which in turn causes the hydrogen-oxygen mixture to burn; after the time relay KT measures the time, its contact is opened, and the high-voltage ignition control circuit stops working.

[0017] The present application adopts the control mode of pulse high-voltage ignition, generates a periodically changing high voltage between the output electrodes of the secondary winding of the second transformer T2, thereby breaking down the gas discharge between the electrode gaps and igniting the hydrogen-oxygen mixture, which is simple and convenient to operate and safe and reliable; by adjusting the number of turns of the coil of the secondary winding of the first transformer T1, the amplitude of the periodically changing high voltage between the output electrodes of the secondary winding of the second transformer T2 is changed to realize the function of ignition energy control; by using the time relay KT to delay the disconnection of the AC input power supply AC after being electrified, the function of ignition time control is realized.

[0018] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present application, and these should also be considered as the protection scope of the present application.

Claims

1. A high voltage ignition control circuit, characterized by: The circuit comprises an ignition coil and an ignition control circuit, a primary coil of the ignition coil is connected with the ignition control circuit, a secondary coil of the ignition coil is connected with two electrode terminals of a spark plug respectively; the ignition control circuit comprises a charge-discharge circuit, the charge-discharge circuit is electrically connected with the primary coil of the ignition coil; the charge-discharge circuit is further provided with an ignition time length control module and an ignition energy control module; the ignition time length control module is a time relay (KT), the ignition energy control module is a first transformer (T1); the ignition coil is a second transformer (T2); one end of a primary winding of the first transformer (T1) is connected with one end of an alternating current input power source (AC) through a first button switch (SA1), the other end of the primary winding of the first transformer (T1) is connected with the other end of the alternating current input power source (AC) through a time relay (KT) contact, one end of a coil of the time relay (KT) is connected with one end of the primary winding of the first transformer (T1), the other end of the coil of the time relay (KT) is connected with the other end of the primary winding of the first transformer (T1) through the time relay (KT) contact; The control mode of pulse high-voltage ignition is adopted, periodic change high-voltage between output electrodes of the secondary winding of the second transformer T2 is generated, so that the gas discharge of the electrode gap is broken down, and then the hydrogen-oxygen mixture is ignited; the mode of adjusting the number of turns of the secondary winding of the first transformer T1 is adopted, the amplitude of the periodic change high-voltage between output electrodes of the secondary winding of the second transformer T2 is changed, the function of ignition energy control is realized; the mode of delaying the disconnection of the alternating current input power source AC after the time relay KT is energized is adopted, the function of ignition time length control is realized.

2. The high-tension ignition control circuit of claim 1, wherein: The charging and discharging circuit comprises an alternating current input power supply (AC), a first button switch (SA1), an ignition time length control module, an ignition energy control module, a first resistor (R1), a second resistor (R2), a third resistor (R3), a first rectifier diode (D1), a second rectifier diode (D2), a third rectifier diode (D3), a first capacitor (C1), a second capacitor (C2), and a first thyristor (VS1).

3. The high voltage ignition control circuit of claim 1, wherein: The first capacitor (C1) has a withstand voltage value greater than 2 times the effective value of the working voltage.

4. The high voltage ignition control circuit of claim 1, wherein: The ignition and discharging period is 1 times or n times of the AC input power supply AC period.

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