阅读说明：本技术 一种用于真空火花间隙的高脉冲触发电路及装置 (High pulse trigger circuit and device for vacuum spark gap ) 是由 王炎 王小芹 郝家银 虞江华 于 2020-12-30 设计创作，主要内容包括：本发明涉及高脉冲触发电路及装置,具体涉及一种用于真空火花间隙的高脉冲触发电路及装置,包括火花间隙GAP、电容C、可控硅SCR、变压器T和充电电路,火花间隙GAP连接于主回路的进线端、出线端之间,火花间隙GAP上并联有分压电阻R1、分压电阻R2,火花间隙GAP与变压器T的二次侧相连,变压器T的一次侧连接有电容C、可控硅SCR,分压电阻R1与电容C之间连接有充电电路；本发明提供的技术方案能够有效克服现有技术所存在的不能对火花间隙进行有效控制的缺陷。(The invention relates to a high pulse trigger circuit and a device, in particular to a high pulse trigger circuit and a device for a vacuum spark GAP, which comprise a spark GAP GAP, a capacitor C, a Silicon Controlled Rectifier (SCR), a transformer T and a charging circuit, wherein the spark GAP GAP is connected between a wire inlet end and a wire outlet end of a main loop, a divider resistor R1 and a divider resistor R2 are connected in parallel on the spark GAP GAP, the spark GAP GAP is connected with the secondary side of the transformer T, the primary side of the transformer T is connected with the capacitor C and the Silicon Controlled Rectifier (SCR), and the charging circuit is connected between the divider resistor R1 and the capacitor C; the technical scheme provided by the invention can effectively overcome the defect that the spark gap can not be effectively controlled in the prior art.)

1. A high pulse trigger circuit for a vacuum spark gap, comprising: the high-voltage power supply comprises a spark GAP GAP, a capacitor C, a Silicon Controlled Rectifier (SCR), a transformer T and a charging circuit, wherein the spark GAP GAP is connected between an incoming line end and an outgoing line end of a main loop, a voltage dividing resistor R1 and a voltage dividing resistor R2 are connected in parallel on the spark GAP GAP, the spark GAP GAP is connected with the secondary side of the transformer T, the capacitor C and the Silicon Controlled Rectifier (SCR) are connected to the primary side of the transformer T, and the charging circuit is connected between the voltage dividing resistor R1 and the capacitor C.

2. The high pulse trigger circuit for a vacuum spark gap of claim 1, wherein: the opposite pole of the spark GAP GAP is connected with the wire inlet end of the main loop, and the adjacent pole of the spark GAP GAP is connected with the wire outlet end of the main loop.

3. The high pulse trigger circuit for a vacuum spark gap of claim 2, wherein: the opposite pole of the spark GAP GAP is connected with one end of a voltage dividing resistor R1, the adjacent pole of the spark GAP GAP is connected with one end of a voltage dividing resistor R2, and the voltage dividing resistor R1 is connected with the voltage dividing resistor R2 in series.

4. The high pulse trigger circuit for a vacuum spark gap of claim 3, wherein: the trigger electrode of the spark GAP GAP is connected with one end of the secondary side of the transformer T, and the adjacent electrode of the spark GAP GAP is connected with the other end of the secondary side of the transformer T.

5. The high pulse trigger circuit for a vacuum spark gap of claim 4, wherein: one end of the primary side of the transformer T is connected with the negative electrode of the capacitor C, the positive electrode of the capacitor C is connected with the anode of the silicon controlled rectifier SCR, and the cathode of the silicon controlled rectifier SCR is connected with the other end of the primary side of the transformer T.

6. The high pulse trigger circuit for a vacuum spark gap of claim 5, wherein: and the silicon controlled rectifier SCR is electrically connected with the photoelectric coupler.

7. The high pulse trigger circuit for a vacuum spark gap as claimed in any one of claims 1 to 6, wherein: the charging circuit is a rectifier bridge.

8. A high pulse trigger device for a vacuum spark gap, characterized by: a high pulse trigger circuit for a vacuum spark gap comprising any one of claims 1 to 6.

Technical Field

The invention relates to a high pulse trigger circuit and a device, in particular to a high pulse trigger circuit and a device for a vacuum spark gap.

Background

In the circuit, the spark gap is widely used because of its characteristics of simple structure, strong current capacity, high voltage resistance, short conduction time and the like. However, the spark gap is difficult to be completely cut off after being turned on, and when a short circuit occurs in a line, if the spark gap cannot be cut off in time, the circuit is still in a conducting state, and a fire or an electric shock accident is likely to be caused.

The conventional trigger circuit is usually conducted by adopting a switch and the like, so that the circuit is complex, the device is large in size, and a high-pulse trigger circuit and a device are designed to completely trigger and turn off a spark gap, so that the circuit where the spark gap is located is quickly switched on and off and is completely controllable.

Disclosure of Invention

Technical problem to be solved

In view of the above disadvantages of the prior art, the present invention provides a high pulse trigger circuit and device for vacuum spark gap, which can effectively overcome the defect of the prior art that the spark gap cannot be effectively controlled.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

a high pulse trigger circuit for a vacuum spark GAP comprises a spark GAP GAP, a capacitor C, a Silicon Controlled Rectifier (SCR), a transformer T and a charging circuit, wherein the spark GAP GAP is connected between an incoming line end and an outgoing line end of a main loop, a divider resistor R1 and a divider resistor R2 are connected in parallel on the spark GAP GAP, the spark GAP GAP is connected with the secondary side of the transformer T, the capacitor C and the Silicon Controlled Rectifier (SCR) are connected to the primary side of the transformer T, and the charging circuit is connected between the divider resistor R1 and the capacitor C.

Preferably, the opposite pole of the spark GAP is connected to the inlet end of the main circuit, and the adjacent pole of the spark GAP is connected to the outlet end of the main circuit.

Preferably, the opposite pole of the spark GAP is connected to one end of a voltage dividing resistor R1, the adjacent pole of the spark GAP is connected to one end of a voltage dividing resistor R2, and the voltage dividing resistor R1 is connected in series with the voltage dividing resistor R2.

Preferably, the trigger pole of the spark GAP is connected to one end of the secondary side of the transformer T, and the adjacent pole of the spark GAP is connected to the other end of the secondary side of the transformer T.

Preferably, one end of the primary side of the transformer T is connected to a negative electrode of the capacitor C, a positive electrode of the capacitor C is connected to an anode of the SCR, and a negative electrode of the SCR is connected to the other end of the primary side of the transformer T.

Preferably, the silicon controlled rectifier SCR is electrically connected to a photocoupler.

Preferably, the charging circuit is a rectifier bridge.

A high pulse triggering device for a vacuum spark gap comprises the high pulse triggering circuit for the vacuum spark gap.

(III) advantageous effects

Compared with the prior art, the high-pulse trigger circuit and the high-pulse trigger device for the vacuum spark gap, which are provided by the invention, can effectively control the spark gap and control the on-off of the main loop, have the advantages of simple structure, safety and reliability, can save the loss of a capacitor, and improve the stability of a power grid system and the comprehensive utilization rate of electric energy.

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. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic circuit diagram of the present invention;

fig. 2 is a schematic circuit diagram of the voltage divider resistor R1, the capacitor C and the charging circuit in fig. 1 according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. 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.

A high pulse trigger circuit for a vacuum spark GAP is disclosed, as shown in fig. 1 and fig. 2, and comprises a spark GAP GAP, a capacitor C, a Silicon Controlled Rectifier (SCR), a transformer T and a charging circuit, wherein the spark GAP GAP is connected between an inlet end and an outlet end of a main loop, a divider resistor R1 and a divider resistor R2 are connected in parallel on the spark GAP GAP, the spark GAP GAP is connected with the secondary side of the transformer T, the capacitor C and the Silicon Controlled Rectifier (SCR) are connected on the primary side of the transformer T, and the charging circuit is connected between the divider resistor R1 and the capacitor C.

The opposite pole of the spark GAP GAP is connected with the wire inlet end of the main loop, and the adjacent pole of the spark GAP GAP is connected with the wire outlet end of the main loop.

The opposite pole of the spark GAP is connected to one end of the voltage dividing resistor R1, the adjacent pole of the spark GAP is connected to one end of the voltage dividing resistor R2, and the voltage dividing resistor R1 is connected in series with the voltage dividing resistor R2.

The trigger pole of the spark GAP GAP is connected with one end of the secondary side of the transformer T, and the adjacent pole of the spark GAP GAP is connected with the other end of the secondary side of the transformer T.

One end of the primary side of the transformer T is connected with the negative electrode of the capacitor C, the positive electrode of the capacitor C is connected with the anode of the silicon controlled rectifier SCR, and the cathode of the silicon controlled rectifier SCR is connected with the other end of the primary side of the transformer T.

The SCR is electrically connected with the photoelectric coupler.

The charging circuit is a rectifier bridge.

A high pulse triggering device for a vacuum spark gap comprises the high pulse triggering circuit for the vacuum spark gap.

When the spark GAP GAP does not work, the main loop is put into operation through the voltage dividing resistor R1 and the voltage dividing resistor R2, the voltage dividing resistor R1 charges the capacitor C through the charging circuit, the capacitor C transmits electric energy to the silicon controlled rectifier SCR, but the control electrode G of the silicon controlled rectifier SCR can be conducted only when a trigger signal is obtained. At the moment, a trigger signal can be generated through the photoelectric coupler, when current passes through the photoelectric coupler, the light emitting diode emits light, the trigger tube senses the light signal and then outputs a high-frequency pulse electric signal, the control electrode G obtains the trigger signal, and the silicon controlled rectifier SCR is conducted. The capacitor C forms a trigger loop through the SCR and the primary side of the transformer T, the primary side of the transformer T provides a trigger voltage required for the conduction of the spark GAP for the secondary side, the spark GAP is thus conducted, and the main loop runs through the spark GAP.

If the spark GAP GAP needs to be switched off, the photoelectric coupler is only needed to be switched off, the control electrode G of the silicon controlled rectifier SCR does not receive high-frequency pulse electrical signals any more, the silicon controlled rectifier SCR is switched off, the trigger circuit is switched off, the primary side of the transformer T does not provide trigger voltage required by the switching on of the spark GAP GAP for the secondary side any more, the spark GAP GAP loses high pulse trigger voltage, and therefore the spark GAP GAP is completely switched off and operation is stopped.

In the technical scheme, the silicon controlled rectifier SCR selects the photoelectric coupler to carry out on-off control, but is not limited to adopt other modes to carry out on-off control on the silicon controlled rectifier SCR. The voltage dividing resistor R1 can be 300k omega, the voltage dividing resistor R2 can be 10M omega, and the capacitor C can be 4uF, wherein an achievable specification parameter is given, and the specific specification parameter also needs to be set according to the actual condition and the use requirement of the circuit.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.