CN116614111A - Coaxial type integrated quick discharge unit - Google Patents

Abstract

The invention discloses a coaxial integrated quick discharge unit.A switch and a capacitor positioned on the circumference of the switch form a coaxial structure, a high-voltage electrode of a gas switch is led out by a high-voltage electrode of the capacitor, the capacitor is tightly and uniformly distributed for a circle by taking the switch as a center, and the inductance of a discharge loop is reduced; the gas switch comprises a switch high-low voltage electrode, an insulating supporting structure and a trigger leading-in structure, and the switch high-voltage electrode is directly connected with a capacitor leading-out high-voltage electrode; the high-low voltage electrode comprises a ring-shaped and flat plate structure; the trigger pulse lead-in structure comprises a trigger lead-in electrode, an insulating filler, a trigger isolation built-in resistor and a plasma micro-jet structure, and is led out from the center of the high-voltage electrode; the invention reduces the design size of the module and the loop inductance under the condition of equal energy storage, solves the problem of large output jitter of the switch under the condition of lower working coefficient, increases the working coefficient range of the gas switch, prolongs the service life, and has good application prospect in the pulse power primary energy storage Marx generator and the linear transformer driving source.

Description

Coaxial type integrated quick discharge unit

Technical Field

The invention belongs to the technical field of fast discharge pulse driving sources, and particularly relates to a coaxial integrated fast discharge unit.

Background

The pulse power driving source is the basis and the core of the pulse power device, and the improvement of the pulse power driving source technology can greatly promote the development of the pulse power technology. Currently, the most widely used driving source technology is a Marx generator and a fast pulse linear transformer driving source (Linear Transformer Driver, LTD for short). For the reduction of the overall inductance of the circuit, the switch itself must not be too bulky and the RLC discharge circuit connected to the capacitor should be sufficiently compact. The gas switch plays a critical role in pulse power, and the output energy of each stage should be as large as possible, so the gas switch used in each stage needs to work as stably as possible, and the output pulses of each stage are superposed to obtain a pulse output with a fast front edge and a high amplitude.

In order to reduce the inductance of the discharge loop, the current research mainly aims at the miniaturization design of the switch volume and the insulation design of the discharge loop to achieve the purpose of reducing the volume of the discharge unit, however, a bottleneck always exists in a single optimization design direction. Meanwhile, experimental researches have found that when smaller switch jitter is used in an LTD device, discharge jitter among loops can be obviously increased. Aiming at the problem of switch jitter, methods for improving the working coefficient of the switch and increasing an ultraviolet pre-ionization structure are often adopted at present, but when the switch jitter is reduced, the probability of self-discharge of the switch is improved, the pulse output with a fast front edge and a high amplitude is not facilitated, and the miniaturization design of the switch is difficult due to the increase of the ultraviolet pre-ionization structure.

Through changing the space structure of the discharging loop, the structure design of the switch is optimized, meanwhile, the working coefficient and the jitter of the switch are reduced, the insulation size of the switch is reduced, and the device has very important application value for the miniaturization design and the stability improvement of the device.

Disclosure of Invention

The invention aims to solve the technical problem of providing a coaxial integrated quick discharge unit for solving the technical problem of large output jitter of a gas switch under a lower working coefficient aiming at the defects in the prior art.

The invention adopts the following technical scheme:

the utility model provides a coaxial type integration quick discharge unit, includes the charge capacitor subassembly, and the charge capacitor subassembly uses gas switch as the annular connection setting of center and constitutes coaxial structure, and gas switch's high voltage electrode is connected with the high voltage extraction electrode of charge capacitor subassembly.

Specifically, the capacitor charging assembly comprises a capacitor arranged in an insulating package body, wherein the top of the capacitor is provided with an upper capacitor inserting sheet, the bottom of the capacitor is correspondingly provided with a lower capacitor inserting sheet, a high-voltage extraction electrode is arranged on the upper side of the upper capacitor inserting sheet, a low-voltage extraction electrode is arranged on the lower side of the lower capacitor inserting sheet, a charging electrode is arranged on the high-voltage extraction electrode, and the charging electrode penetrates through the high-voltage extraction electrode and is connected with the upper capacitor inserting sheet.

Specifically, the gas switch comprises a high-voltage electrode, the high-voltage electrode is arranged in an insulating cylinder, the upper end of the high-voltage electrode is connected with a high-voltage extraction electrode, a trigger electrode is arranged at the center of the high-voltage electrode, a low-voltage electrode is arranged below the trigger electrode, and the upper part of the trigger electrode is connected with a trigger electrode insulating support through a trigger introduction electrode.

Further, the high-voltage electrode is of an annular structure, the bottom of the high-voltage electrode is of an annular cylindrical structure, and the insulating cylinder is of an annular groove structure and is fixedly connected with the end faces of the high-voltage electrode and the low-voltage external electrode respectively.

Further, the bottom of the insulating cylinder is connected with a low-voltage external electrode, the low-voltage electrode is arranged at the center of the low-voltage external electrode, and the edge of the low-voltage electrode is in a rounding structure.

Further, the front section of the trigger lead-in electrode is of a conductor structure, the middle section of the trigger lead-in electrode is of a structure that a trigger needle is buried in the center of the insulating filler, the rear section of the trigger lead-in electrode is connected with a trigger isolation built-in resistor, a layer of conductor structure is filled on the outer side of the trigger lead-in electrode to serve as a trigger electrode, the tail end of the trigger isolation built-in resistor is led out of a plasma micro-jet electrode, the plasma micro-jet electrode is connected with a ceramic tube, and the plasma micro-jet electrode is led out from the center of the high-voltage electrode; the two ends of the trigger isolation built-in resistor are respectively and electrically connected with the needle-shaped structure of the trigger introducing electrode and the plasma micro-jet electrode.

Furthermore, the trigger electrode is of a horn-shaped structure, is electrically insulated from the trigger introducing electrode, is internally provided with a trigger isolation built-in resistor and the plasma micro-jet electrode through insulating fillers, is provided with an annular cylindrical groove on the side surface of the bottom of the trigger electrode, and is overlapped with the center of the high-voltage electrode.

Furthermore, the bottom surface of the trigger electrode is parallel to the low-voltage electrode, and the edge of the trigger electrode is rounded.

Further, the diameter of the plasma microfluidic electrode is greater than the inner diameter of the ceramic tube.

Further, the trigger electrode insulation support is of a sleeve type structure, the trigger introducing electrode is arranged at the center of the trigger electrode insulation support, and the trigger introducing electrode, the high-voltage electrode, the low-voltage external electrode and the insulation cylinder form a gas switch sealing chamber.

Compared with the prior art, the invention has at least the following beneficial effects:

the coaxial integrated fast discharge unit consists of a miniaturized three-electrode gas switch and charging capacitor groups uniformly distributed on the circumference taking the gas switch as the center of a circle, the coaxial structure design reduces the inductance of a discharge loop, the two gap electrodes of the switch are designed in parallel, the uniformity of two electric fields is ensured, meanwhile, a trigger isolation built-in resistor and a plasma micro-jet tube are designed in a trigger introduction structure, the miniaturized design of the switch is ensured, and meanwhile, the working coefficient and the jitter of the switch are reduced, so that the front edge of pulse output is improved; peak and stability.

Furthermore, the high-low voltage extraction electrodes are respectively and tightly connected with the upper and lower inserting sheets of the capacitor, and then are connected with the switch electrode; the charging electrode is connected with the upper inserting sheet of the capacitor and is used for high-voltage charging of the device.

Further, the switch is composed of a high-low voltage electrode and a trigger electrode, the electrodes are insulated by gas, two gas discharge gaps of the three-electrode switch are formed, the high-voltage electrode and the trigger electrode are located in an insulating structure, and solid external insulation of the gas switch is formed.

Further, the high-voltage electrode is designed into a symmetrical annular structure, and the annular cylindrical structure at the bottom end is used for forming one discharge gap with the trigger electrode; the annular groove structure of the insulating cylinder is used for increasing the creepage distance between the high-voltage electrode and the low-voltage electrode, enhancing the insulating capability of the switch and fixedly connecting the upper section with the high-voltage electrode.

Further, the low-voltage electrode is positioned at the center, is fixedly connected with the low-voltage external electrode and the insulating cylinder, forms another discharge gap with the trigger electrode, and leads a round corner at the edge to improve the uniformity degree of the electric field and reduce the jitter in discharge.

Further, the trigger introducing structure is composed of three sections, wherein the front section is used for being directly connected with an external trigger signal; the introduction of the switch plasma micro-jet structure keeps the introduction structure of the trigger pulse electrically insulated from the trigger electrode, so that the switch plasma micro-jet structure is realized by insulating filler between the introduction structure and the trigger electrode in the middle and rear sections; in order to reduce the influence of switch discharge on a trigger pulse power supply and meet the miniaturization design requirement of an integral structure, an isolation resistor is built in an insulating filler of an introduction structure, and in order to reduce the discharge jitter of the switch, a plasma micro-jet structure is added at the rear section, so that when a trigger pulse reaches a plasma micro-jet electrode, plasma is generated in a ceramic tube and expands into a gas gap formed by a trigger electrode and a low-voltage electrode, the introduction structure is electrically connected with the trigger electrode, and meanwhile, the generated plasma provides effective initial electrons for the gas gap discharge formed by the trigger electrode and the low-voltage electrode, and the jitter of a statistical time delay part in the discharge development process is obviously reduced.

Further, the side surface of the trigger electrode and the high-voltage electrode form a gas discharge gap, and the side surface of the trigger electrode is designed into an annular cylindrical groove structure for ensuring the uniformity of an electric field due to the annular cylindrical structure at the bottom end of the high-voltage electrode, and the circle center of the groove is coincident with the circle center of the annular cylindrical structure at the bottom of the high-voltage electrode; due to the electrical insulation requirement of the trigger introducing structure and the trigger electrode, the trigger isolation built-in resistor and the plasma micro-jet electrode are insulated from the trigger electrode through the insulating filler in the rear section of the trigger introducing structure.

Furthermore, in order to ensure the electric field uniformity of the discharge gap formed by the trigger electrode and the low-voltage electrode, the edge of the low-voltage electrode is rounded, and the edge of the bottom of the trigger electrode opposite to the edge is also rounded, and the circle center of the rounded corner is coincident with the circle center of the rounded corner led by the low-voltage electrode.

Further, the plasma micro-jet electrode is connected with the ceramic tube, in order to ensure that plasma expands in one direction in the ceramic tube to form a gap between the trigger electrode and the low-voltage electrode, the radius of the electrode is slightly larger than the inner diameter of the ceramic tube, and the electrode and the low-voltage electrode are sealed.

Further, the trigger electrode insulation support is used for fixing the trigger electrode introduction structure and determining the position of the trigger electrode, and forms a closed cavity together with the high-low voltage electrode and the insulation cylinder of the gas switch.

In conclusion, the bearing ring grinding roundness online measuring device is simple in structure and convenient to operate, and can realize bearing ring grinding roundness online measurement.

The technical scheme of the invention is further described in detail through the drawings and the embodiments.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a cross-sectional view of a trigger introducing structure in a fast discharge cell of the present invention;

FIG. 3 is a schematic diagram of the positions of the switch and circumferentially distributed capacitor banks in the fast discharge unit of the present invention;

fig. 4 is a diagram showing a structure of a switching electrode in the fast discharge unit according to the present invention.

Wherein: 1. an upper insert of the capacitor; 2. a high voltage extraction electrode; 3. a low voltage extraction electrode; 4. a capacitor lower insert; 5. a charging electrode; 6. a capacitor; 7. an inner insulating package; 8. an outer insulating package; 9. a high voltage electrode; 10. a low voltage electrode; 11. a low-voltage external electrode; 12. an insulating cylinder; 13. triggering the lead-in electrode; 14. an insulating filler; 15. triggering and isolating the built-in resistor; 16. a plasma microjet electrode; 17. a ceramic tube; 18. a trigger electrode; 19. and the trigger electrode is supported in an insulating way.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "one side", "one end", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Various structural schematic diagrams according to the disclosed embodiments of the present invention are shown in the accompanying drawings. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and their relative sizes, positional relationships shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required.

The invention provides a coaxial integrated quick discharge unit, a switch and a charging capacitor component positioned on the circumference of the switch form a coaxial structure, a high-voltage electrode of a gas switch is led out from a high-voltage electrode of a capacitor, the capacitor is tightly and uniformly distributed for a circle by taking the gas switch as the center, and the inductance of a discharge loop is reduced; the gas switch comprises a switch high-low voltage electrode; the high-voltage electrode of the switch is directly connected with the high-voltage electrode of the capacitor; the high-low voltage electrode comprises a ring-shaped and flat plate structure; the trigger pulse introducing structure comprises a trigger introducing electrode; an insulating filler; and triggering and isolating the built-in resistor and the plasma micro-jet structure, and leading out from the center of the high-voltage electrode. The high-stability coaxial integrated quick discharge unit can obviously reduce the design size and loop inductance of the module under the condition of equal energy storage, simultaneously solve the problem of large output jitter of the switch under a lower working coefficient, enlarge the working coefficient range of the gas switch, improve the service life of the device, and have good application prospects in a pulse power primary energy storage Marx generator and a linear transformer driving source (LTD).

Referring to fig. 1 and 3, the coaxial integrated fast discharge unit of the present invention includes a gas switch and a charging capacitor assembly, wherein the charging capacitor assembly is uniformly distributed on the outer side of the gas switch along the circumference of the gas switch; the gas switch and the charging capacitor components which are uniformly distributed on the circumference form a coaxial structure, the high-voltage electrode 9 of the gas switch is led out by the high-voltage leading-out electrode 2 of the charging capacitor component, the charging capacitor component is uniformly distributed for a circle by taking the gas switch as the center, and the inductance of a discharge loop is reduced.

The charging capacitor assembly comprises a capacitor 6, an upper capacitor inserting sheet 1 is arranged at the top of the capacitor 6, a lower capacitor inserting sheet 4 is correspondingly arranged at the bottom of the capacitor, an inner insulating package body 7 is arranged on the inner side of the charging capacitor assembly 6, an outer insulating package body 8 is correspondingly arranged on the outer side of the charging capacitor assembly, a Z-shaped high-voltage extraction electrode 2 is arranged on the upper side of the upper capacitor inserting sheet 1, a charging electrode 5 is arranged on the high-voltage extraction electrode 2, and a low-voltage extraction electrode 3 is arranged on the lower side of the lower capacitor inserting sheet 4.

The gas switch comprises a high-voltage electrode 9, a low-voltage electrode 10, an insulating cylinder 12, a trigger electrode insulating support 19, a trigger introducing electrode 13, an insulating filler 14, a trigger isolation built-in resistor 15, a plasma micro-jet electrode 16, a ceramic tube 17 and a trigger electrode 18.

One end of the high-voltage lead-out electrode 2 is respectively connected with the high-voltage electrode 9 and the trigger electrode insulation support 19, the lower end of the high-voltage electrode 9 is connected with the low-voltage external electrode 11 through the insulation cylinder 12, the low-voltage electrode 10 is arranged at the center of the low-voltage external electrode 11, the trigger electrode 18 is arranged above the low-voltage electrode 10, the upper end of the trigger electrode 18 is connected with the trigger electrode insulation support 19 through the trigger lead-in electrode 13, the ceramic tube 17 is arranged in the trigger electrode 18, the plasma micro-jet electrode 16 is arranged in the ceramic tube 17, and the trigger isolation built-in resistor 15 is arranged on the plasma micro-jet electrode 16.

The high-voltage electrode 9 is of an annular structure, and the bottom of the high-voltage electrode is similar to an annular cylindrical structure; the low voltage electrode 10 is fixed to the center of the low voltage external electrode 11 by 2 insulating fastening screws and rounded at the edge positions.

The insulating cylinder 12 has an annular groove structure and is fixed with the end surfaces of the high-voltage electrode and the low-voltage electrode by 4 insulating fastening screws.

The trigger electrode insulating support 19 is of a sleeve-shaped structure, the trigger leading-in electrode 13 is inserted in the center of the trigger electrode insulating support, the trigger leading-in electrode and the trigger leading-in electrode are fixed by insulating fastening screws at the contact positions of the trigger leading-in electrode end face and the insulating support, and the structure, the gas switch high-voltage electrode 9, the gas switch low-voltage outer electrode 11 and the annular groove structure 12 form a gas switch sealing cavity; the front section of the trigger lead-in electrode 13 is of a conductor structure, the middle section is of a structure that a trigger needle is buried in the center of the insulating filler 14, the rear section is in contact with the built-in resistor 15, the outer side is filled with a layer of conductor structure, the conductor structure is used as a trigger electrode 18, the tail end of the resistor is led out of the plasma micro-jet electrode 16, and the plasma micro-jet electrode 16 is connected with the ceramic tube 17.

Referring to fig. 2 and 4, the trigger electrode 18 has a horn structure and is connected to the trigger introducing electrode 13; the trigger isolation built-in resistor 15 and the needle electrode 16 are electrically insulated through the middle insulating filler 14, an annular cylindrical groove is formed in the side surface of the bottom of the trigger electrode 18, the circle center of the section arc coincides with the circle center of the section arc at the bottom of the high-voltage electrode 9, the bottom surface of the trigger electrode 18 is parallel to the low-voltage electrode 10, and the edge chamfering position of the low-voltage electrode 10 is of an arc structure;

the two ends of the trigger isolation built-in resistor 15 are respectively and electrically connected with the needle-shaped structure of the trigger introducing electrode 13 and the plasma micro-jet electrode 16; the diameter of the plasma micro-jet electrode 16 is the same as the inner diameter of the ceramic tube 17; the bottom end of the ceramic tube is kept flush with the end face of the trigger electrode 18;

an annular cylindrical groove is formed on the side face of the trigger electrode 18, and the circle center of the cylinder is coincident with the high-voltage electrode 9.

The bottom surface of the trigger electrode 18 is kept parallel to the electrode 10 and the edges are rounded.

The trigger isolation built-in resistor 15 is a noninductive high-frequency high-voltage resistor.

The plasma micro-jet electrode 16 is thicker than the inner diameter of the ceramic tube 17, and sealing treatment is carried out at the contact position of the electrode and the ceramic tube.

The ceramic tube 17 is composed of a cylindrical structure of different outer diameters, with a smaller radius at the bottom of the trigger introduction structure.

The switching high-voltage electrode 9 is directly connected with the capacitor lead-out high-voltage electrode 2.

In a preferred embodiment of the invention, the electric fields in the two gaps formed by the high voltage electrode 9, the low voltage electrode 10 and the trigger electrode 18 are uniformly distributed, the distance between the trigger electrode 18 and the high voltage electrode 9 is 6mm, and the distance between the trigger electrode 18 and the low voltage electrode 10 is 3mm.

The trigger introducing electrode 13 is terminated with a cylindrical structure having a diameter of 1mm.

The resistance of the trigger isolation built-in resistor 15 is 1kΩ.

The plasma microfluidic electrode 16 was 1mm in diameter and 7mm in length.

The ceramic tube 17 has an inner diameter of 400 μm and a length of 1mm, and an outer diameter of 1mm at the level of the trigger electrode 18.

The working principle of the coaxial integrated quick discharge unit is as follows:

the working process of the fast-release point branch circuit is as follows: the switch is connected with the gas cylinder through the gas nozzle for charging, the direct current source is connected with the charging electrode 5 for charging the capacitor high-voltage electrode 1, meanwhile, the outer high-voltage electrode 2 is connected with the switch high-voltage electrode 9, and the high-voltage electrode 9 of the gas switch is also provided with the same high-voltage potential; after the charging is completed, the trigger introducing electrode 13 is connected with an external trigger signal, the trigger signal is introduced into the plasma micro-jet electrode 16 through the trigger isolation built-in resistor 15, then an arc channel is generated on the inner wall of the ceramic tube, and the gas expands under the heating effect to spray out the arc surface plasmoid. The ejected plasma and an arc channel in the ceramic tube are connected with the plasma micro-jet electrode 16 and the trigger electrode 18 of the gas switch, and the gap between the trigger electrode 18 and the switch high-voltage electrode 9 breaks down under the action of trigger pulse. The trigger electrode 18 and the high voltage electrode 9 are then equipotential, and the trigger electrode 18 and the high voltage electrode 10 are broken down by the gap overvoltage. Is led out through the capacitor high-voltage lead-out electrode 2 and the capacitor low-voltage lead-out electrode 3 as basic discharge units of the Marx generator and the LTD.

Examples

The gas switch is manufactured by adopting the structural design of the invention.

The gas gap distance between the trigger electrode and the high-low voltage electrode is 6mm and 3mm respectively, the trigger introducing structure is positioned at the center of the high-voltage electrode, the tail end of the trigger introducing electrode is of a cylindrical structure with the diameter of 1mm, the resistance value of the trigger isolation resistor is 1kΩ, the diameter of the plasma micro-jet electrode is 1mm, the length of the plasma micro-jet electrode is 3mm, the inner diameter of the ceramic tube is 400 mu m, and the outer diameter of the ceramic tube at the position flush with the trigger electrode is 1mm.

The minimum working coefficient of the switch is measured by a switch breakdown characteristic experiment, the breakdown jitter of the gap between the trigger electrode and the low-voltage electrode is less than 2ns, and the requirements of the current pulse power device can be well met.

In summary, the coaxial integrated fast discharge unit of the invention has the following advantages:

1. coaxial compact structure, the inductance of the discharge loop is little: the miniaturized gas switch and the charging capacitor components which are uniformly distributed around the miniaturized gas switch as the center form a coaxial structure, and the trigger isolation resistor is built in the trigger introduction structure to solve the problem that components are arranged externally; the reliability is low, the structural size is reduced, and the module size and the loop inductance can be obviously reduced under the condition of equivalent energy storage;

2. the switch breakdown jitter is reduced, and the stability of a discharge loop is improved: by optimizing the structures of the high-low voltage electrode and the trigger electrode, the distribution of electric fields between the two air gaps is improved to be uniform, and the stability of time delay formed in the discharge development is improved; introducing a plasma micro-jet structure, wherein in breakdown of an overvoltage gap, the plasma micro-jet is performed; the jet head stably generates effective initial electrons on the photoionization of the gap space and the distortion of the electric field, and the jitter of statistical time delay in the discharge development is obviously reduced;

3. can be applied in a larger working coefficient range: through the design of the switch electrode structure and the introduction of the plasma micro-jet structure, the gas switch can have more stable breakdown characteristic under lower working coefficient, thereby meeting the application requirement under lower working coefficient and effectively prolonging the service life of the switch.

The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a coaxial type integration quick discharge unit which characterized in that, includes the charge capacitor subassembly, and the charge capacitor subassembly uses gas switch as the annular connection setting of center and constitutes coaxial structure, and gas switch's high-voltage electrode (9) is connected with charge capacitor subassembly's high voltage extraction electrode (2).

2. The coaxial integrated quick discharge unit according to claim 1, wherein the charging capacitor assembly comprises a capacitor (6) arranged in an insulating package body, an upper capacitor inserting sheet (1) is arranged at the top of the capacitor (6), a lower capacitor inserting sheet (4) is correspondingly arranged at the bottom of the capacitor, the high-voltage extraction electrode (2) is arranged on the upper side of the upper capacitor inserting sheet (1), a low-voltage extraction electrode (3) is arranged on the lower side of the lower capacitor inserting sheet (4), a charging electrode (5) is arranged on the high-voltage extraction electrode (2), and the charging electrode (5) penetrates through the high-voltage extraction electrode (2) to be connected with the upper capacitor inserting sheet (1).

3. The coaxial integrated quick discharge unit according to claim 1, wherein the gas switch comprises a high-voltage electrode (9), the high-voltage electrode (9) is arranged in an insulating cylinder (12), the upper end of the high-voltage electrode (9) is connected with a high-voltage extraction electrode (2), a trigger electrode (18) is arranged at the center of the high-voltage electrode (9), a low-voltage electrode (10) is arranged below the trigger electrode (18), and the upper part of the trigger electrode (18) is connected with a trigger electrode insulating support (19) through a trigger introduction electrode (13).

4. A coaxial integrated fast discharge unit according to claim 3, characterized in that the high voltage electrode (9) is of an annular structure, the bottom is of an annular cylindrical structure, the insulating cylinder (12) is of an annular groove structure, and the insulating cylinder is fixedly connected with the end surfaces of the high voltage electrode (9) and the low voltage external electrode (11) respectively.

5. A coaxial integrated fast discharge unit according to claim 3, characterized in that the bottom of the insulating cylinder (12) is connected with a low-voltage external electrode (11), the low-voltage electrode (10) is arranged at the center of the low-voltage external electrode (11), and the edge position of the low-voltage electrode (10) is in a rounded structure.

6. The coaxial integrated quick discharge unit according to claim 3, wherein the front section of the trigger lead-in electrode (13) is of a conductor structure, the middle section is of a structure that a trigger needle is buried in the center of the insulating filler (14), the rear section is connected with a trigger isolation built-in resistor (15), a layer of conductor structure is filled outside the trigger lead-in electrode (13) to serve as a trigger electrode (18), a plasma micro-jet electrode (16) is led out from the tail end of the trigger isolation built-in resistor (15), the plasma micro-jet electrode (16) is connected with a ceramic tube (17), and the plasma micro-jet electrode is led out from the center of the high-voltage electrode (9); the two ends of the trigger isolation built-in resistor (15) are respectively and electrically connected with the needle-shaped structure of the trigger introducing electrode (13) and the plasma micro-jet electrode (16).

7. The coaxial integrated fast discharge unit according to claim 6, wherein the trigger electrode (18) has a horn-shaped structure, is electrically insulated from the trigger introducing electrode (13), the trigger isolation built-in resistor (15) and the plasma micro-jet electrode (16) by the insulating filler (14), and has an annular cylindrical groove on the bottom side surface of the trigger electrode (18) and is coincident with the center of the high-voltage electrode.

8. The coaxial integrated fast discharge unit of claim 6, wherein the bottom surface of the trigger electrode (18) is kept parallel to the low voltage electrode (10), and the edges of the trigger electrode (18) are rounded.

9. The coaxial integrated fast discharge unit of claim 6, wherein the diameter of the plasma microjet electrode (16) is larger than the inner diameter of the ceramic tube (17).

10. A coaxial integrated fast discharge unit according to claim 3, characterized in that the trigger electrode insulation support (19) is of a sleeve-type structure, the trigger introducing electrode (13) is arranged in the center of the trigger electrode insulation support (19), and forms a gas switch sealing chamber together with the high-voltage electrode (9), the low-voltage external electrode (11) and the insulating cylinder (12).