CN102522699A

CN102522699A - Rodlike three-electrode high-energy pulse discharge switch under gaseous environment

Info

Publication number: CN102522699A
Application number: CN2011104017830A
Authority: CN
Inventors: 陈景亮; 姚学玲
Original assignee: Xian Jiaotong University
Current assignee: Huage electronic (Kunshan) Co. Ltd.; Xian Jiaotong University
Priority date: 2011-12-06
Filing date: 2011-12-06
Publication date: 2012-06-27
Anticipated expiration: 2031-12-06
Also published as: CN102522699B

Abstract

The invention discloses a rodlike three-electrode high-energy pulse discharge switch under a gaseous environment, which comprises a left rodlike electrode, a right rodlike electrode and a sealed shell, wherein the left rodlike electrode and the right rodlike electrode are arranged in an insulated shell and are symmetrical left and right; the sealed shell is composed of the insulated shell and flow guide rods arranged on two ends of the insulated shell; at least one of the left electrode and the right electrode is a moving electrode; and a trigger electrode is arranged between the left electrode and the right electrode. As the left electrode and the right electrode are arranged under a certain air-pressure environment, under the action of Lorentz force, an electric arc quickly moves upwards along an electrode surface or quickly moves to the front end of the electrode; the ablativity of the electrode is extremely low, and a switch has great capability of conducting transient high-energy current; a conductive channel is under a sealing environment and is free from external interference, and the running reliability of a high-energy pulse switch is improved; gap distance between the left electrode and the right electrode is regulated by the moving electrode; and the high-energy pulse switch can stably work under a wide voltage range.

Description

Bar-shaped discharge switch of high-energy impulse in three electrodes under the gaseous environment

Technical field

The present invention relates to a kind of high-energy discharge switch, bar-shaped discharge switch of high-energy impulse in three electrodes under particularly a kind of gaseous environment that is used for Pulse Power Techniques, nuclear fusion, superlaser and high energy pulse current testing.

Background technology

Discharge switch of high-energy impulse is one of Primary Component commonly used in Pulse Power Techniques, nuclear fusion, superlaser and the high energy pulse technology.Development along with strong electromagnetic pulses such as Pulse Power Techniques technology; The high energy pulse generating means will be brought into play more and more big effect; The quantity of electric charge transfer amount of discharge switch and pulse energy are also increasing gradually; Under high voltage, big current condition, the physical process of the punch-through of switch and switch discharge is very complicated, and the ablation of switch electrode directly has influence on the flash-over characteristic and the useful life of switch.For this reason, having high withstand voltage, a time delay of discharging and shake little, equivalent electric sensibility reciprocal and resistance is little, electrode erosion is few and repetition rate is high switching device, is the focus and the difficult point problem of current electrotechnics section research.

Gas discharge switch has that the voltage of bearing height, conduction current are big, stability is high, equivalent inductance and plurality of advantages such as resistance is little, the operating voltage adjustment is convenient, simple in structure, cost is low, at high voltage, be used widely in electric current and the Pulse Power Techniques greatly.Gas switch is when conducting; Produce strong electric arc between switch gap; Arc temperature can reach several thousand even up to ten thousand degrees centigrade with the difference of switch air pressure, electric field strength, through-flow size etc.; This high-temperature electric arc causes strong ablation effect to electrode material, and the degree of ablating is also determining the stability and the life-span of switch work.

Summary of the invention

The object of the present invention is to provide bar-shaped discharge switch of high-energy impulse in three electrodes under a kind of gaseous environment, this switch possesses the ability of great conducting transient state high-energy current, high operational reliability, and low, the long service life of the ablating rate of electrode.

For achieving the above object; The technical scheme that the present invention adopts is: comprise insulation crust and the left electrode, the right electrode that are arranged in the insulation crust; Insulation crust is provided with the left and right diversion rod that is used to install left and right electrode; Left and right electrode joins through left and right diversion rod and outside, has at least one to be float electrode in described left electrode and the right electrode, between the discharging gap of left and right electrode, is provided with trigger electrode.

Described trigger electrode is a columnar electrode and to fall in left and right electrode vertical; This trigger electrode is connected with the outside through insulation crust, and the degree of depth that the distance between left electrode, right electrode and the trigger electrode and trigger electrode are inserted between left electrode and the right electrode is adjustable.

Described left electrode is parallel placement with right electrode.

The face that described left and right electrode is relative is that angle between inclined-plane and two inclined-planes is less than miter angle.

Described left electrode and right electrode are the electrode of pole shape, rectangular configuration, or the combining form of pole shape and rectangular configuration.

In the described switch air or the inert gas that is filled with adjustable pressure in the airtight insulation crust.

Because left and right electrode is enclosed under the gaseous environment; Gas medium with pressure has high insulation level; Left and right sides electrode parallel or that place at the elevation angle has the rapid diffusion ability of arc post plasma; Make it possess the ability of great conducting transient state high-energy current, and the switch stability that is enclosed in the gaseous environment is high with reliability; Gaseous arc is under the effect of long-range navigation magnetic force, and side shifting outside electrode has reduced the ablation to electrode rapidly; And through float electrode or change the operating voltage that gas can the conveniently regulating and controlling switch.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention 1;

Fig. 2 is the electrode structure sketch map of the embodiment of the invention 1;

Fig. 3 is the electrode structure sketch map of the embodiment of the invention 2.

Embodiment

Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are done further explain.

Embodiment 1; Referring to Fig. 1,2; Left electrode 1, the right electrode 2 of parallel placement in present embodiment comprises insulation crust 6 and is arranged on insulation crust 6; Left side electrode 1 constitutes main discharge gap 7 with right electrode 2, and insulation crust 6 is provided with the left and right diversion rod 4,5 that is used to install left and

right electrode

1,2, and left and

right electrode

1,2 joins through left and right diversion rod 4,5 and outside; A left side electrode 1, right electrode 2 are the electrode of pole shape, rectangular configuration, or the combining form of pole shape and rectangular configuration is rectangular configuration electrode but edge rounding; One of them electrode is a fixed electrode, and another electrode is a float electrode; Be provided with pole shape trigger electrode 3 between left electrode 1, the right electrode 2 and perpendicular to the plane of left electrode 1 and right electrode 2; This trigger electrode 3 is connected with outside through insulation crust 6; The degree of depth that distance between left side electrode 1, right electrode 2 and the trigger electrode 3 and trigger electrode 3 are inserted between left electrode 1 and the right electrode 2 can be adjusted, and is air or the inert gas that is filled with adjustable pressure in the airtight insulation crust 6 in the switch.

Embodiment 2, referring to Fig. 1, and 3, left and right electrode 1, the 2 relative faces of present embodiment are that angle 8 between inclined-plane and two inclined-planes is less than miter angle.

The course of work of the present invention is following: referring to 1,2,3; The present invention has the right electrode 2 and the trigger electrode 3 between left electrode 1, right electrode 2 of a fixing left electrode 1, an activity; When trigger electrode 3 provides the trigger impulse of q.s; Form field emission between trigger electrode 3 and the left electrode 1, thereby form initial plasma, along with the diffusion of initial plasma to discharging gap 7; Electric field between left electrode 1 and the right electrode 2 is distorted, directly cause the disruptive discharge between left electrode 1 and the right electrode 2.Owing to place about electrode of the present invention; Electrode surface upwards or to the electrode front end moves pulsed arc in the effect lower edge of the long-range navigation magnetic force in self-built magnetic field; Particularly when between left electrode 1 and the right electrode 2 during 8 (less than 45s) in a certain angle; Helping pulsed arc more upwards or to the electrode front end moves under the effect of self-built magnetic field Lauren magnetic force along electrode surface on the one hand; Local ablation effect weakens pulsed arc to electrode like this, strong conducting current capacity and long useful life such as make that bar-shaped three electrode pulse discharge switches have.

Claims

1. bar-shaped discharge switch of high-energy impulse in three electrodes under the gaseous environment; It is characterized in that: comprise airtight insulation crust (6) and be arranged on left electrode (1), the right electrode (2) in the insulation crust (6); Insulation crust (6) is provided with the left and right diversion rod (4,5) that is used to install left and right electrode (1,2); Left and right electrode (1,2) joins through left and right diversion rod (4,5) and outside; Have at least one to be float electrode in described left electrode (1) and the right electrode (2), between the discharging gap (7) of left and right electrode (1,2), be provided with trigger electrode (3).

2. bar-shaped discharge switch of high-energy impulse in three electrodes under the gaseous environment according to claim 1; It is characterized in that: described trigger electrode (3) is for columnar electrode and fall in left and right electrode (1,2); This trigger electrode (3) is connected with the outside through insulation crust (6), and the degree of depth that the distance between left electrode (1), right electrode (2) and the trigger electrode (3) and trigger electrode (3) are inserted between left electrode (1) and the right electrode (2) is adjustable.

3. bar-shaped discharge switch of high-energy impulse in three electrodes under the gaseous environment according to claim 1 is characterized in that: described left electrode (1) is parallel placement with right electrode (2).

4. bar-shaped discharge switch of high-energy impulse in three electrodes under the gaseous environment according to claim 1 is characterized in that: the relative face of described left and right electrode (1,2) is that angle (8) between inclined-plane and two inclined-planes is less than miter angle.

5. bar-shaped discharge switch of high-energy impulse in three electrodes under the gaseous environment according to claim 1 is characterized in that: described left electrode (1) and right electrode (2) are the electrode of pole shape, rectangular configuration, or the combining form of pole shape and rectangular configuration.

6. bar-shaped discharge switch of high-energy impulse in three electrodes under the gaseous environment according to claim 1 is characterized in that: be air or the inert gas that is filled with adjustable pressure in the airtight insulation crust (6) in the described switch.