High-pressure gas switch trigger circuit

Abstract

The invention provides a high-pressure gas switch trigger circuit, which comprises a power supply module, an input isolation module, a charging energy storage module, a discharging trigger module, a first capacitor C1 and an isolation transformer T1, and is characterized in that the power supply module is connected with the charging energy storage module, the charging energy storage module is connected with the first capacitor C1, and the first capacitor C1 is connected with the starting end of a primary winding of the isolation transformer T1; the tail end of a primary winding of the isolation transformer T2 is grounded, the input isolation module is connected with an external input signal and is respectively connected with the charging energy storage module and the discharging trigger module, the discharging trigger module is connected with the charging energy storage module, the discharging trigger module is connected with the charging energy storage module, and a secondary winding of the isolation transformer T1 outputs a trigger signal. The high-pressure gas switch trigger circuit provided by the invention is low in cost and high in safety.

Description

Technical Field

[0001] The present invention relates to the field of circuit technologies, and particularly to a trigger circuit for a high-voltage gas switch. Background Art

[0002] In a power system, a high-voltage gas switch is used to cut off and connect a circuit. When it is necessary to close the circuit to transmit electric energy, after receiving a control signal, the trigger circuit precisely generates a trigger pulse with sufficient energy and appropriate pulse width to quickly turn on the gas switch and ensure the continuity of power transmission; when it is necessary to disconnect the circuit, the trigger circuit can also generate corresponding trigger pulses according to a predetermined program to help the gas switch extinguish the arc and achieve reliable turn-off. However, due to the very high bus voltage and large energy of the high-voltage gas switch, the safety requirements for the trigger circuit connected in parallel to the switch are relatively high.

[0003] That is, how to provide a new type of trigger circuit for a high-voltage gas switch to achieve the technical effects of improving the safety of the circuit and reducing costs is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0004] Aiming at the above existing problems, the present invention aims to provide a trigger circuit for a high-voltage gas switch to solve at least one of the above technical problems.

[0005] The present invention provides a trigger circuit for a high-voltage gas switch, which includes: a power supply module, an input isolation module, a charging and energy storage module, a discharge trigger module, a first capacitor C1, and an isolation transformer T1. The output end of the power supply module is connected to the first end of the charging and energy storage module. The second end of the charging and energy storage module is connected to one end of the first capacitor C1. The other end of the first capacitor C1 is connected to the starting end of the primary winding of the isolation transformer T1. The end of the primary winding of the isolation transformer T2 is grounded. The first end of the input isolation module accesses an external input signal. The second end of the input isolation module is respectively connected to the third end of the charging and energy storage module and the first end of the discharge trigger module. The second end of the discharge trigger module is connected to the fourth end of the charging and energy storage module. The third end of the discharge trigger module is connected to the second end of the charging and energy storage module. The secondary winding of the isolation transformer T1 outputs a trigger signal.

[0006] Preferably, the charging and energy storage module includes:

[0007] A triode Q1, the emitter of the triode Q1 being the first end of the charging and energy storage module;

[0008] A first resistor R1, one end of the first resistor R1 being connected to the collector of the triode Q1, and the other end of the first resistor R1 being the second end of the charging and energy storage module;

[0009] A second resistor R2, the second resistor R2 being connected between the base and the emitter of the triode Q1;

[0010] A third resistor R3, one end of the third resistor R3 being connected to the emitter of the triode Q1;

[0011] A fourth resistor R4, one end of the fourth resistor R4 being connected to the base of the triode Q1;

[0012] A first field effect transistor Q2, the gate of the first field effect transistor Q2 being connected to the other end of the third resistor R3, the drain of the first field effect transistor Q2 being connected to the other end of the fourth resistor R4, and the source of the first field effect transistor Q2 being the fourth terminal of the charging and energy storage module;

[0013] A fifth resistor R5, one end of the fifth resistor R5 being connected to the other end of the third resistor R3, and the other end of the fifth resistor R5 being the third terminal of the charging and energy storage module.

[0014] Preferably, the charging and energy storage module further includes:

[0015] A first diode D1, the cathode of the first diode D1 being connected to the emitter of the triode Q1, and the anode of the first diode D1 being connected to the collector of the triode Q1;

[0016] A second diode D2, the anode of the second diode D2 being connected to the source of the first field effect transistor Q2, and the cathode of the second diode D2 being connected to the gate of the first field effect transistor Q2.

[0017] Preferably, the discharge trigger module includes:

[0018] A second field effect transistor Q3, the gate of the second field effect transistor Q3 being the first terminal of the discharge trigger module, and the source of the second field effect transistor Q3 being the second terminal of the discharge trigger module;

[0019] A sixth resistor R6, one end of the sixth resistor R6 being connected to the drain of the second field effect transistor Q3;

[0020] A unidirectional thyristor Q4, the anode of the unidirectional thyristor Q4 being the third terminal of the discharge trigger module, the cathode of the unidirectional thyristor Q4 being grounded, and the control electrode of the unidirectional thyristor Q4 being connected to the other end of the sixth resistor R6;

[0021] A seventh resistor R7, the seventh resistor R7 being connected between the control electrode and the cathode of the unidirectional thyristor Q4;

[0022] A second capacitor C2, one end of the second capacitor C2 is connected to the source electrode of the second field effect transistor Q3, and the other end of the second capacitor C2 is grounded;

[0023] A third diode D3, the cathode of the third diode D3 is connected to one end of the second capacitor C2, and the anode of the third diode D3 is connected to the other end of the second capacitor C2.

[0024] Preferably, the discharge trigger module further includes:

[0025] A fourth diode D4, the cathode of the fourth diode D4 is connected to the anode of the unidirectional thyristor Q4, and the anode of the fourth diode D4 is connected to the cathode of the unidirectional thyristor Q4.

[0026] Preferably, the input isolation module includes:

[0027] An eighth resistor R8, one end of the eighth resistor R8 is the first end of the input isolation module;

[0028] A ninth resistor R9, one end of the ninth resistor R9 is connected to the other end of the eighth resistor R8, and the other end of the ninth resistor R9 is grounded through an electrostatic discharge device;

[0029] An optocoupler U1, the anode of the emitting end of the optocoupler U1 is connected to the other end of the eighth resistor R8, the cathode of the emitting end of the optocoupler U1 is connected to the other end of the ninth resistor R9, the collector of the receiving end of the optocoupler U1 is the second end of the input isolation module, and the emitter of the receiving end of the optocoupler U1 is grounded.

[0030] Preferably, the input voltage range of the power supply module is 20 - 100V, the output voltage range of the power supply module is 100V to 300V, and the power supply module is an isolated flyback PWM modulation circuit.

[0031] Preferably, the external input signal is a TTL level pulse, and the pulse width of the TTL level pulse is less than 1mS and the pulse interval is less than 20mS.

[0032] Preferably, the second diode D2 and the third diode D3 are zener diodes.

[0033] Preferably, the first field effect transistor Q2 is an NMOS transistor, the second field effect transistor Q3 is a PMOS transistor, and the triode Q1 is a PNP triode.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] Specifically, the present invention provides a high-voltage gas switch trigger circuit, which includes a power supply module, an input isolation module, a charging energy storage module, a discharge trigger module, a first capacitor C1, and an isolation transformer T1. The output end of the power supply module is connected to the first end of the charging energy storage module. The second end of the charging energy storage module is connected to one end of the first capacitor C1. The other end of the first capacitor C1 is connected to the starting end of the primary winding of the isolation transformer T1. The end of the primary winding of the isolation transformer T2 is grounded. The first end of the input isolation module accesses an external input signal. The second end of the input isolation module is respectively connected to the third end of the charging energy storage module and the first end of the discharge trigger module. The second end of the discharge trigger module is connected to the fourth end of the charging energy storage module. The third end of the discharge trigger module is connected to the second end of the charging energy storage module. The secondary winding of the isolation transformer T1 outputs a trigger signal. Among them, the power supply module is used to provide a charging power supply for the charging energy storage module. The charging energy storage module is used to charge and store energy for the first capacitor C1. By setting the input isolation module, the external input signal is isolated from the trigger circuit of the present application. By using the isolation transformer, the high-voltage gas switch is isolated from the trigger circuit, improving the safety of the circuit. By setting the discharge trigger module, when the discharge trigger module is triggered to conduct through the input isolation module, the first capacitor C1 discharges. At the same time, the current on the primary winding side of the isolation transformer T1 changes, causing an induced electromotive force to be generated on the secondary winding side of the isolation transformer T1, thereby forming a trigger signal and outputting it to the high-voltage gas switch. The high-voltage gas switch trigger circuit provided by the present application has a low cost and high safety.

[0036] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following specifically illustrates the specific embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0038] Figure 1 It is a connection schematic diagram of the high-voltage gas switch trigger circuit in the embodiment of the present application;

[0039] Figure 2 It is a connection schematic diagram of the power supply module in the embodiment of the present application.

[0040] Reference numerals:

[0041] 1. Input isolation module;

[0042] 2. Charging and energy storage module;

[0043] 3. Discharge triggering module. Specific implementation manner

[0044] Next, the technical solutions in the embodiments of this specification will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention; among them, the keyword "and / or" involved in this embodiment represents two situations, namely, and and or. In other words, A and / or B mentioned in the embodiments of this specification represents two situations, A and B, and A or B, describing three states existing between A and B. For example, A and / or B means: only including A but not B; only including B but not A; including both A and B.

[0045] At the same time, in the embodiments of this specification, when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time.

[0046] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0047] Embodiment 1

[0048] Please refer to Figure 1, Specifically, in this embodiment of the high-voltage gas switch trigger circuit, the high-voltage gas switch trigger circuit provided by the present application specifically includes a power supply module, an input isolation module 1, a charging and energy storage module 2, a discharge trigger module 3, a first capacitor C1, and an isolation transformer T1. The output terminal of the power supply module is connected to the first end of the charging and energy storage module 2. The second end of the charging and energy storage module 2 is connected to one end of the first capacitor C1. The other end of the first capacitor C1 is connected to the starting end of the primary winding of the isolation transformer T1. The end of the primary winding of the isolation transformer T2 is grounded. The first end of the input isolation module 1 is connected to an external input signal. The second end of the input isolation module 1 is respectively connected to the third end of the charging and energy storage module 2 and the first end of the discharge trigger module 3. The second end of the discharge trigger module 3 is connected to the fourth end of the charging and energy storage module 2. The third end of the discharge trigger module 3 is connected to the second end of the charging and energy storage module 2. The secondary winding of the isolation transformer T1 outputs a trigger signal.

[0049] Specifically, an embodiment of the present invention provides a high-voltage gas switch trigger circuit, including a power supply module, an input isolation module 1, a charging and energy storage module 2, a discharge trigger module 3, a first capacitor C1, and an isolation transformer T1. The output terminal (such as the VO+ terminal in the attachment Figure 1 ) of the power supply module is connected to the first end of the charging and energy storage module 2. The second end of the charging and energy storage module 2 is connected to one end of the first capacitor C1. The other end of the first capacitor C1 is connected to the starting end of the primary winding of the isolation transformer T1. The end of the primary winding of the isolation transformer T2 is grounded. The first end of the input isolation module 1 is connected to an external input signal. The second end of the input isolation module 1 is respectively connected to the third end of the charging and energy storage module 2 and the first end of the discharge trigger module 3. The second end of the discharge trigger module 3 is connected to the fourth end of the charging and energy storage module 2. The third end of the discharge trigger module 3 is connected to the second end of the charging and energy storage module 2. The secondary winding of the isolation transformer T1 is connected in parallel to the high-voltage gas switch to output a trigger signal to the high-voltage gas switch. Among them, the power supply module is used to provide a charging power supply for the charging and energy storage module 2. The charging and energy storage module 2 is used to charge and store energy for the first capacitor C1. By setting the input isolation module 1, the external input signal is isolated from the trigger circuit of the present application. By using the isolation transformer, the high-voltage gas switch is isolated from the trigger circuit, improving the safety of the circuit. By setting the discharge trigger module 3, when the discharge trigger module 3 is triggered to conduct through the input isolation module 1, the first capacitor C1 discharges. At the same time, the current on the primary winding side of the isolation transformer T1 changes, so that an induced electromotive force is generated on the secondary winding side of the isolation transformer T1, thereby forming a trigger signal and outputting it to the high-voltage gas switch. The high-voltage gas switch trigger circuit provided by the embodiment of the present application has a low cost and high safety.

[0050] In a possible implementation, the charging and energy storage module 2 includes a triode Q1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first field-effect transistor Q2, and a fifth resistor R5. Among them, the emitter of the triode Q1 is the first end of the charging and energy storage module 2; one end of the first resistor R1 is connected to the collector of the triode Q1, and the other end of the first resistor R1 is the second end of the charging and energy storage module 2; the second resistor R2 is connected between the base and the emitter of the triode Q1; one end of the third resistor R3 is connected to the emitter of the triode Q1; one end of the fourth resistor R4 is connected to the base of the triode Q1; the gate of the first field-effect transistor Q2 is connected to the other end of the third resistor R3, the drain of the first field-effect transistor Q2 is connected to the other end of the fourth resistor R4, and the source of the first field-effect transistor Q2 is the fourth end of the charging and energy storage module 2; one end of the fifth resistor R5 is connected to the other end of the third resistor R3, and the other end of the fifth resistor R5 is the third end of the charging and energy storage module 2.

[0051] Among them, the triode Q1 is a PNP triode, and the first field-effect transistor Q2 is an NMOS transistor.

[0052] It can be understood that by connecting a second resistor R2 between the base and the emitter of the PNP-type triode Q1 and connecting the second resistor R2 to the power supply module, a suitable bias current is provided for the triode Q1 to stabilize the working state of the circuit. The first resistor R1, the third resistor R3, the fourth resistor R4, and the fifth resistor R5 are used to limit the current of the circuit to maintain the stability of the circuit.

[0053] When the first end (VO+) of the charging and energy storage module 2 receives the output voltage of the power supply module, a part of the current passes through the third resistor R3 to turn on the first field-effect transistor Q2. After the first field-effect transistor Q2 is turned on, it pulls down the base of the triode Q1 to turn on the triode Q1. The current passes through the triode Q1 and the first resistor R1 and then reaches the first capacitor C1. Since the current is relatively small and is a direct current, the primary impedance and inductive reactance of the isolation transformer T1 can be ignored. At this time, the current passes through the first capacitor C1 and the primary winding of the isolation transformer T1 and then directly flows to GND to charge the first capacitor C1; another part of the current passes through the fourth resistor R4 and the first field-effect transistor Q2 to charge C2, and the voltage of C2 is clamped by the zener diode D3.

[0054] In a possible implementation, the charging and energy storage module 2 further includes a first diode D1 and a second diode D2. The cathode of the first diode D1 is connected to the emitter of the triode Q1, and the anode of the first diode D1 is connected to the collector of the triode Q1. The anode of the second diode D2 is connected to the source of the first field effect transistor Q2, and the cathode of the second diode D2 is connected to the gate of the first field effect transistor Q2. The second diode D2 is a zener diode to protect the triode Q1 and the first field effect transistor Q2 through the first diode D1 and the second diode D2 respectively.

[0055] In a possible implementation, the discharge trigger module 3 includes a second field effect transistor Q3, a sixth resistor R6, a unilateral thyristor Q4, a seventh resistor R7, a second capacitor C2, and a third diode D3. The gate of the second field effect transistor Q3 is the first terminal of the discharge trigger module 3, and the source of the second field effect transistor Q3 is the second terminal of the discharge trigger module 3; one end of the sixth resistor R6 is connected to the drain of the second field effect transistor Q3; the anode of the unilateral thyristor Q4 is the third terminal of the discharge trigger module 3, the cathode of the unilateral thyristor Q4 is grounded, and the control electrode of the unilateral thyristor Q4 is connected to the other end of the sixth resistor R6; the seventh resistor R7 is connected between the control electrode and the cathode of the unilateral thyristor Q4; one end of the second capacitor C2 is connected to the source of the second field effect transistor Q3, and the other end of the second capacitor C2 is grounded; the cathode of the third diode D3 is connected to one end of the second capacitor C2, and the anode of the third diode D3 is connected to the other end of the second capacitor C2.

[0056] Specifically, by setting the sixth resistor R6 and connecting a seventh resistor R7 between the control electrode and the cathode of the unilateral thyristor Q4, it can limit the current of the trigger signal input to the unilateral thyristor Q4 to ensure the stability of the trigger signal. Among them, the second field effect transistor Q3 is a PMOS transistor, and the third diode D3 is a zener diode.

[0057] In a possible implementation, the discharge trigger module 3 further includes a fourth diode D4. The cathode of the fourth diode D4 is connected to the anode of the unilateral thyristor Q4, and the anode of the fourth diode D4 is connected to the cathode of the unilateral thyristor Q4 to protect the unilateral thyristor Q4, thereby improving the safety of the circuit.

[0058] In a possible implementation, the input isolation module 1 includes an eighth resistor R8, a ninth resistor R9, and an optocoupler U1. One end of the eighth resistor R8 is the first end of the input isolation module 1; one end of the ninth resistor R9 is connected to the other end of the eighth resistor R8, and the other end of the ninth resistor R9 is grounded through an electrostatic discharge device; the anode of the emitter of the optocoupler U1 is connected to the other end of the eighth resistor R8, the cathode of the emitter of the optocoupler U1 is connected to the other end of the ninth resistor R9, the collector of the receiver of the optocoupler U1 is the second end of the input isolation module 1, and the emitter of the receiver of the optocoupler U1 is grounded.

[0059] Specifically, through the eighth resistor R8 and the ninth resistor R9, the emitter current of the optocoupler is limited within a safe range to ensure the normal operation of the light-emitting diode, extend its service life, and at the same time, the spike pulses can be smoothed and filtered to reduce their impact on the optocoupler. By setting the optocoupler, the circuit part of the external input signal is isolated from the charge storage module 2 and the discharge trigger module 3, improving the safety and stability of the circuit.

[0060] In a possible implementation, the input voltage range of the power supply module is 20 - 100V, the output voltage range of the power supply module is 100V to 300V, and the power supply module is an isolated flyback PWM modulation circuit.

[0061] As Figure 2 shown, the power supply is input from ports P1 and P2, and the input voltage range is 20 - 100V DC, providing power for the entire circuit. The power supply module is an isolated flyback PWM modulation circuit, and a DC voltage of 100 - 300V is output through the isolation transformer in the circuit for the subsequent system. The isolation voltage of the transformer in this circuit is generally 2kV, and the reinforced insulation can be 8KV isolation, which isolates the input voltage from the entire circuit. The isolated flyback PWM modulation circuit in this application can be implemented using an existing circuit scheme, and the specific circuit structure is as Figure 2 shown, which will not be elaborated here.

[0062] In a possible implementation, the external input signal is a TTL level pulse. The pulse width of the TTL level pulse is related to the charging speed of the C10 capacitor. Specifically, the pulse width of the TTL level pulse can be set to be less than 1mS, and the pulse spacing is less than 20mS. The external input signal is input from ports P4 and P5 in the Figure 1 .

[0063] After the external input signal is input from ports P4 and P5 and isolated by the optocoupler U1, there will be 4 states before and after this circuit: standby state, static state, conducting state, and cutoff state:

[0064] (1) Preparation state: When the power supply module supplies power normally (when the VO+ is in the normal standby voltage state) and the external input signal is at a low level (no trigger), a part of the current passes through the third resistor R3 to turn on the first field-effect transistor Q2. After the first field-effect transistor Q2 is turned on, it pulls down the base of the transistor Q1 to turn on the transistor Q1. The current passes through the transistor Q1 and the first resistor R1 and then reaches the first capacitor C1. Since the current is relatively small and is a direct current, the primary impedance and inductive reactance of the isolation transformer T1 can be ignored. At this time, the current passes through the first capacitor C1 and the primary winding of the isolation transformer T1 and then directly flows to the GND to charge the first capacitor C1; another part of the current passes through the fourth resistor R4 and the first field-effect transistor Q2 to charge C2, and the voltage of C2 is clamped by the zener diode D3.

[0065] (2) Static state: After C1 is fully charged, the entire circuit will continuously wait for the arrival of the external input signal;

[0066] (3) Conducting state: When a positive TTL pulse level is input by the external input signal, the optocoupler U1 is turned on. At this time, one path pulls down the first field-effect transistor Q2 through the fifth resistor R5 to make Q2 cut off, and the transistor Q1 will also cut off without emitter current. At this time, the power supply module for charging is disconnected; the other path pulls down the gate of the second field-effect transistor Q3 to turn on Q3. The charge of the second capacitor C2 will flow through the second field-effect transistor Q3 to the unilateral thyristor Q4 to turn on Q4. The charge stored in C1 is released by Q4 and applied to the primary coil of the isolation transformer T1 to form energy transfer. At this time, an induced voltage will appear in the secondary coil. If the turns ratio of the T1 transformer is set to be very large, then the secondary winding will induce an electric spark of about 10 - 50 kV and output it to the trigger end of the high-voltage gas switch as Figure 1 shown, and the trigger signal is output from the P3 and P6 ports.

[0067] (4) Cut-off state: Due to the continuous conduction of the thyristor, even if the charge of the second capacitor C2 is released, the external input signal will not be cut off until the charge of the first capacitor C1 is released and then restored. At this time, since the input signal continues to be input, the first capacitor C1 will not be charged. The transistor Q1, the first field-effect transistor Q2, the second field-effect transistor Q3, and the unilateral thyristor Q4 will all be in the cut-off state until the input signal disappears and returns to the preparation state.

[0068] The electrostatic discharge device involved in this application is formed by connecting the discharge resistor R12, the capacitor C3, and the toothed copper foil G1 in parallel, as specifically shown in Figure 1 shown, and the resistance value of the discharge resistor can be taken as 1 - 10 megohms.

[0069] The circuit provided by this application is applicable to occasions that require generating time and voltage controllable electric sparks or voltages, such as high-voltage gas switches, ignition devices with strict real-time requirements, etc.

[0070] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they do not have any substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear description and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present invention can be implemented.

[0071] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not used to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to the above-disclosed technical content to obtain equivalent embodiments with equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A high-voltage gas switch trigger circuit for triggering the conduction or cutoff of a high-voltage gas switch, characterized in that, The high-voltage gas switch triggering circuit includes: a power supply module, an input isolation module, a charging and energy storage module, a discharge triggering module, a first capacitor C1, and an isolation transformer T1. The output end of the power supply module is connected to the first end of the charging and energy storage module. The second end of the charging and energy storage module is connected to one end of the first capacitor C1. The other end of the first capacitor C1 is connected to the starting end of the primary winding of the isolation transformer T1. The end of the primary winding of the isolation transformer T2 is grounded. The secondary winding of the isolation transformer T1 outputs a triggering signal to the high-voltage gas switch. The first end of the input isolation module accesses an external input signal. The second end of the input isolation module is respectively connected to the third end of the charging and energy storage module and the first end of the discharge triggering module. The second end of the discharge triggering module is connected to the fourth end of the charging and energy storage module. The third end of the discharge triggering module is connected to the second end of the charging and energy storage module.

2. The high-voltage gas switch trigger circuit according to claim 1, wherein The charging and energy storage module includes: a triode Q1, and the emitter of the triode Q1 is the first end of the charging and energy storage module; a first resistor R1, one end of the first resistor R1 is connected to the collector of the triode Q1, and the other end of the first resistor R1 is the second end of the charging and energy storage module; a second resistor R2, which is connected between the base and the emitter of the triode Q1; a third resistor R3, one end of the third resistor R3 is connected to the emitter of the triode Q1; a fourth resistor R4, one end of the fourth resistor R4 is connected to the base of the triode Q1; a first field-effect transistor Q2, the gate of the first field-effect transistor Q2 is connected to the other end of the third resistor R3, the drain of the first field-effect transistor Q2 is connected to the other end of the fourth resistor R4, and the source of the first field-effect transistor Q2 is the fourth end of the charging and energy storage module; a fifth resistor R5, one end of the fifth resistor R5 is connected to the other end of the third resistor R3, and the other end of the fifth resistor R5 is the third end of the charging and energy storage module.

3. The high-voltage gas switch trigger circuit according to claim 2, characterized in that, The charging and energy storage module further includes: a first diode D1, the cathode of the first diode D1 is connected to the emitter of the triode Q1, and the anode of the first diode D1 is connected to the collector of the triode Q1; a second diode D2, the anode of the second diode D2 is connected to the source of the first field-effect transistor Q2, and the cathode of the second diode D2 is connected to the gate of the first field-effect transistor Q2.

4. The high-voltage gas switch triggering circuit according to claim 3, characterized in that, The discharge triggering module includes: a second field-effect transistor Q3, the gate of the second field-effect transistor Q3 is the first end of the discharge triggering module, and the source of the second field-effect transistor Q3 is the second end of the discharge triggering module; a sixth resistor R6, one end of the sixth resistor R6 is connected to the drain of the second field-effect transistor Q3; a unidirectional thyristor Q4, the anode of the unidirectional thyristor Q4 is the third end of the discharge triggering module, the cathode of the unidirectional thyristor Q4 is grounded, and the control electrode of the unidirectional thyristor Q4 is connected to the other end of the sixth resistor R6; The seventh resistor R7, where the seventh resistor R7 is connected between the control electrode and the cathode of the unidirectional thyristor Q4; The second capacitor C2, where one end of the second capacitor C2 is connected to the source electrode of the second field-effect transistor Q3, and the other end of the second capacitor C2 is grounded; The third diode D3, where the cathode of the third diode D3 is connected to one end of the second capacitor C2, and the anode of the third diode D3 is connected to the other end of the second capacitor C2.

5. The high-voltage gas switch triggering circuit according to claim 4, characterized in that, The discharge trigger module further includes: The fourth diode D4, where the cathode of the fourth diode D4 is connected to the anode of the unidirectional thyristor Q4, and the anode of the fourth diode D4 is connected to the cathode of the unidirectional thyristor Q4.

6. The high-voltage gas switch trigger circuit according to claim 1, wherein The input isolation module includes: The eighth resistor R8, where one end of the eighth resistor R8 is the first end of the input isolation module; The ninth resistor R9, where one end of the ninth resistor R9 is connected to the other end of the eighth resistor R8, and the other end of the ninth resistor R9 is grounded through an electrostatic discharge device; The optocoupler U1, where the anode of the emitter of the optocoupler U1 is connected to the other end of the eighth resistor R8, the cathode of the emitter of the optocoupler U1 is connected to the other end of the ninth resistor R9, the collector of the receiver of the optocoupler U1 is the second end of the input isolation module, and the emitter of the receiver of the optocoupler U1 is grounded.

7. The high-voltage gas switch trigger circuit according to claim 1, wherein, The input voltage range of the power supply module is 20 - 100V, the output voltage range of the power supply module is 100V to 300V, and the power supply module is an isolated flyback PWM modulation circuit.

8. The high-voltage gas switch triggering circuit according to claim 1, characterized in that, The external input signal is a TTL-level pulse, and the pulse width of the TTL-level pulse is less than 1mS and the pulse spacing is less than 20mS.

9. The high-voltage gas switch trigger circuit according to claim 4, characterized in that, The second diode D2 and the third diode D3 are zener diodes.

10. The high-voltage gas switch triggering circuit according to claim 4, wherein, The first field-effect transistor Q2 is an NMOS transistor, the second field-effect transistor Q3 is a PMOS transistor, and the triode Q1 is a PNP triode.

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