Gas switch electrode ablation product collecting device

Abstract

The invention relates to a collecting device, in particular to a gas switch electrode ablation product collecting device, and solves the technical problem that an existing gas switch electrode ablation product is difficult to stably collect. The gas switch electrode ablation product collection device comprises two first collection fixing discs and two second collection fixing discs which are arranged in a gas switch, and a sampling piece, the two first acquisition fixing discs are respectively connected with the inner walls of the gas switches corresponding to the upper electrode and the lower electrode through electrode lead rods, and the two first acquisition fixing discs are arranged in parallel; the two second acquisition fixing discs are vertically connected between the two first acquisition fixing discs respectively and are positioned on the two sides of the electrode respectively; a collection channel is formed between the two first collection fixing discs and the two second collection fixing discs; the sampling piece is detachably arranged in the mounting hole and used for collecting electrode ablation products in the collecting channel when the gas switch is conducted for discharging.

Description

Technical Field

[0001] The present invention relates to a collection device, in particular to a collection device for ablation products of gas switch electrodes. Background Art

[0002] Gas switches are widely used in primary pulse sources. They have the characteristics of simple structure, reliable performance, and convenient installation, and are key devices for realizing electric power amplification. The fast pulse linear transformer driver (FLTD) usually controls hundreds of thousands of gas switches during operation. Its structural characteristics determine that the gas switch has higher reliability, that is, the working life of the electrodes of the gas switch is as long as possible. Therefore, how to make the gas switch have low jitter, long life, and high stability is a difficult problem.

[0003] One of the main factors affecting the service life of existing gas switches is electrode ablation. The ablation products generated on the electrode surface when the gas switch conducts will deposit on the surface of the insulating material of the gas switch, reducing its electrical insulation performance. At the same time, the insulating material of the gas switch is prone to surface flashover, resulting in abnormal operation of the gas switch, and thus affecting the life and stability of the gas switch. At present, there is no special device for collecting electrode ablation products. Therefore, carrying out relevant research on the collection device for electrode ablation products is of great significance for improving the life of gas switches. Summary of the Invention

[0004] The purpose of the present invention is to solve the technical problem that it is difficult to stably collect the ablation products of the electrodes of existing gas switches, and a collection device for ablation products of gas switch electrodes is provided.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A collection device for ablation products of gas switch electrodes is characterized in that: the electrodes inside the gas switch are respectively led out through two electrode rods, including two first collection and fixing plates and two second collection and fixing plates arranged inside the gas switch, and a sampling sheet;

[0007] The two first collection and fixing plates are respectively connected to the inner wall of the gas switch corresponding to the upper electrode and the lower electrode through the electrode rods, and the two first collection and fixing plates are arranged in parallel;

[0008] The two second collection and fixing plates are respectively vertically connected between the two first collection and fixing plates and are respectively located on both sides of the electrode;

[0009] The adjacent first collection and fixing plate and the second collection and fixing plate are connected, so that a collection channel is formed between the two first collection and fixing plates and the two second collection and fixing plates;

[0010] Mounting holes are provided on both the first collection and fixing plate and the second collection and fixing plate;

[0011] The sampling piece is detachably arranged in the mounting hole and is used for collecting the electrode ablation products during the conduction and discharge of the gas switch in the collection channel.

[0012] Furthermore, the sampling piece has a circular structure, and two arc-shaped protrusions are symmetrically arranged on its circumference; the circle formed by the two arc-shaped protrusions is concentric with the sampling piece; the mounting hole includes a through hole adapted to the sampling piece and a groove adapted to the arc-shaped protrusion; the through hole is communicated with the groove; two inner grooves are symmetrically arranged along the circumference on the inner wall of the through hole, and the starting end of each inner groove is communicated with the groove, and the ending end is a blind groove; the diameter of the circle formed by the two arc-shaped protrusions on each mounting hole is less than or equal to the diameter of the circle formed by the bottoms of the two inner grooves, and the width of the inner groove is greater than or equal to the thickness of the sampling piece, so that the arc-shaped protrusion can be screwed into or out of the inner groove.

[0013] Furthermore, both the first collection fixing plate and the second collection fixing plate are rectangular flat plate structures; there are 2 mounting holes arranged on the first collection fixing plate, and the 2 mounting holes are arranged along the length direction of the first collection fixing plate and are respectively located on both sides of the upper electrode or the lower electrode; there is 1 mounting hole arranged on the second collection fixing plate for mounting 1 sampling piece, and the 1 mounting hole is arranged opposite to the discharge gap between the upper electrode and the lower electrode.

[0014] Furthermore, the included angle between the connecting line of the starting end and the ending end of the inner groove and the long side of the corresponding first collection fixing plate or the second collection fixing plate is 90°; the included angle between the central connecting line of the two grooves on each mounting hole and the long side of the corresponding first collection fixing plate or the second collection fixing plate is 37.5°.

[0015] Furthermore, it further includes two positioning blocks; the two positioning blocks are respectively arranged at both ends inside the gas switch and are used for positioning the two second collection fixing plates.

[0016] Furthermore, two support bars are symmetrically arranged at both ends of the second collection fixing plate; strip-shaped holes adapted to the support bars are arranged on the positioning blocks, and the two second collection fixing plates are positioned through the cooperation of the support bars and the strip-shaped holes.

[0017] Furthermore, there is an arc transition between the arc-shaped protrusion and the sampling piece; there is an arc transition between the second collection fixing plate and the support bar.

[0018] Furthermore, the materials of both the first collection fixing plate and the second collection fixing plate are plexiglass; the thickness of the sampling piece is 1 - 2 mm, and its material is polytetrafluoroethylene; the material of the positioning block is nylon or plexiglass.

[0019] Furthermore, the sampling piece and the two arc-shaped protrusions are integrally formed.

[0020] The beneficial effects of the present invention:

[0021] 1. A device for collecting ablation products of a gas switch electrode according to the present invention mounts a sampling piece on two first collection fixing plates and two second collection fixing plates; and sets the first collection fixing plate on the back of the electrode through an electrode lead rod; the second collection fixing plate is fixed on the side of the electrode through a positioning block to achieve complete collection of ablation products.

[0022] 2. The device for collecting ablation products of a gas switch electrode according to the present invention has a simple structure and is easy to install, and can meet the needs of researching ablation products of the electrode.

[0023] 3. The device for collecting ablation products of a gas switch electrode according to the present invention is designed with inner grooves inside the mounting holes. After the sampling piece is loaded into the inner grooves, the convex structure of the sampling piece can be embedded into the inner grooves by rotation, so as to realize stable installation of the sampling piece, which is simple and easy to achieve and will not damage the ablation products of the electrode.

[0024] 4. For the device for collecting ablation products of a gas switch electrode according to the present invention, the diameter of the circle formed by two arc protrusions on each mounting hole is less than or equal to the diameter of the circle formed by the bottoms of two inner grooves, and the width of the inner groove is greater than or equal to the thickness of the sampling piece, so that the arc protrusions can be screwed into or out of the inner grooves, facilitating the installation and removal of the sampling piece.

[0025] 5. For the device for collecting ablation products of a gas switch electrode according to the present invention, the included angle between the connection line of the starting end and the ending end of the inner groove and the long side of the corresponding first collection fixing plate or second collection fixing plate is 90°, and the included angle between the center connection line of two grooves on each mounting hole and the long side of the corresponding first collection fixing plate or second collection fixing plate is 37.5°, which can prevent the sampling piece from slipping.

[0026] 6. For the device for collecting ablation products of a gas switch electrode according to the present invention, two inner grooves are symmetrically arranged along the inner wall circumference of the through hole, which can prevent the sampling piece from rotating.

[0027] 7. For the device for collecting ablation products of a gas switch electrode according to the present invention, the first collection fixing plate is fixed to the electrode by an electrode lead rod, and the second collection fixing plate is fixed by a positioning block, fully considering the positions of the upper electrode and the lower electrode and the shape of the outer shell, which is convenient for the sampling piece to collect ablation products. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of a sampling piece in an embodiment of the device for collecting ablation products of a gas switch electrode according to the present invention;

[0029] Figure 2 is a schematic structural diagram of a first collection fixing plate in an embodiment of the device for collecting ablation products of a gas switch electrode according to the present invention;

[0030] Figure 3It is a schematic structural diagram of the second collection fixing plate in an embodiment of a gas switch electrode ablation product collection device of the present invention;

[0031] Figure 4 It is a schematic structural diagram of the mounting hole in an embodiment of a gas switch electrode ablation product collection device of the present invention;

[0032] Figure 5 It is a schematic structural diagram of the inner groove in an embodiment of a gas switch electrode ablation product collection device of the present invention;

[0033] Figure 6 It is a schematic diagram of being installed in a gas switch in an embodiment of a gas switch electrode ablation product collection device of the present invention.

[0034] Explanation of reference numerals:

[0035] 1 - First collection fixing plate, 2 - Second collection fixing plate, 21 - Support bar, 3 - Sampling piece, 4 - Arc protrusion, 5 - Mounting hole, 51 - Through hole, 52 - Groove, 6 - Inner groove, 7 - Positioning block, 8 - Gas switch, 9 - Electrode lead rod. Detailed implementation manners

[0036] A gas switch electrode ablation product collection device includes two first collection fixing plates 1, two second collection fixing plates 2, two positioning blocks 7 and a sampling piece 3 arranged inside the gas switch 8. The electrodes inside the gas switch 8 are respectively led out through two electrode lead rods 9. The two first collection fixing plates 1 are respectively connected to the inner walls of the gas switch 8 corresponding to the upper electrode and the lower electrode through the electrode lead rods 9, and the two first collection fixing plates 1 are arranged in parallel; the two second collection fixing plates 2 are respectively vertically connected between the two first collection fixing plates 1 and are respectively located on both sides of the electrode; the adjacent first collection fixing plate 1 and second collection fixing plate 2 are connected, so that a collection channel is formed between the two first collection fixing plates 1 and the two second collection fixing plates 2; mounting holes 5 are provided on both the first collection fixing plate 1 and the second collection fixing plate 2; the sampling piece 3 is detachably arranged in the mounting hole 5 for collecting the electrode ablation products when the gas switch 8 conducts and discharges in the collection channel.

[0037] Such as Figure 1As shown, the sampling piece 3 has a circular structure, and two arc-shaped protrusions 4 are symmetrically arranged on its circumference for fixing the sampling piece 3 on two first acquisition fixing plates 1 and two second acquisition fixing plates 2; the circle formed by the two arc-shaped protrusions 4 and the sampling piece 3 are concentric circles. The thickness of the sampling piece 3 is 1.7 mm, the diameter is 65 mm, the diameter of the circle formed by the two arc-shaped protrusions 4 is 68 mm, the chord length of the arc is 8 mm, the arc-shaped protrusion 4 and the sampling piece 3 are transitioned with an arc of radius 2.25 mm, and the chamfer radius at the edge of the arc-shaped protrusion 4 is 3.75 mm; the sampling piece 3 and the two arc-shaped protrusions 4 are integrally formed, and the materials of the sampling piece 3 and the arc-shaped protrusions 4 are both polytetrafluoroethylene, which can resist irradiation, and the number of sampling pieces 3 is 6.

[0038] As Figure 2 、 Figure 3 shown, both the first acquisition fixing plate 1 and the second acquisition fixing plate 2 have a rectangular flat plate structure, and mounting holes 5 for installing the sampling piece 3 are provided thereon; there are 2 mounting holes 5 on the first acquisition fixing plate 1, and the 2 mounting holes 5 are arranged along the length direction of the first acquisition fixing plate 1 and are respectively located on both sides of the upper electrode or the lower electrode; there is 1 mounting hole 5 on the second acquisition fixing plate 2 for installing 1 sampling piece 3, and the 1 mounting hole 5 is arranged opposite to the discharge gap between the upper electrode and the lower electrode. The mounting hole 5 includes a through hole 51 adapted to the sampling piece 3 and a groove 52 adapted to the arc-shaped protrusion 4; the through hole 51 is communicated with the groove 52; two inner grooves 6 are symmetrically arranged along the circumference on the inner wall of the through hole 51, and the starting end of each inner groove 6 is communicated with the groove 52, and the end point is a blind groove for the arc-shaped protrusion 4 to be screwed into or out of the inner groove 6. The diameter of the circle formed by the two arc-shaped protrusions 4 on each mounting hole 5 is less than or equal to the diameter of the circle formed by the bottom of the two inner grooves 6, and the width of the inner groove 6 is greater than or equal to the thickness of the sampling piece 3, so that the arc-shaped protrusion 4 can be screwed into or out of the inner groove 6.

[0039] The length of the first acquisition fixing plate 1 is 210 mm, the width is 73 mm, and the thickness is 5 mm; the diameter of the mounting hole 5 is 65.1 mm; the diameter of the circle formed by the two inner grooves 6 is 68 mm, and the width of each inner groove 6 is 1.8 mm. As Figure 4 、 Figure 5 shown, the included angle between the connecting line of the starting end and the end point of the inner groove 6 and the long side of the corresponding first acquisition fixing plate 1 and the second acquisition fixing plate 2 is 90°, and the included angle between the connecting line of the centers of the two grooves 52 on each mounting hole 5 and the long side of the corresponding first acquisition fixing plate 1 and the second acquisition fixing plate 2 is 37.5°. The material of the first acquisition fixing plate 1 is organic glass, and the number is 2.

[0040] The two positioning blocks 7 are internally adapted to the gas switch 8; the two positioning blocks 7 are respectively arranged at both ends inside the gas switch 8 for positioning the two second acquisition fixing plates 2; two support bars 21 are symmetrically arranged at both ends of the second acquisition fixing plate 2; a strip-shaped hole adapted to the support bar 21 is arranged on the positioning block 7; the two second acquisition fixing plates 2 are positioned by the cooperation of the support bar 21 and the strip-shaped hole. The thickness of the positioning block 7 is 50 mm, and a strip-shaped hole with a length of 16 mm, a width of 5 mm, a depth of 25 mm, and a chamfer radius of 1.5 mm is respectively opened at a position 40 mm away from the center on both sides. The material of the positioning block 7 is nylon, and the number is 2.

[0041] The length of the second acquisition fixing plate 2 is 210 mm, the width is 73 mm, the thickness is 5 mm, the length of the two support bars 21 on both sides is 30 mm, the width is 16 mm, the second acquisition fixing plate 2 and the support bar 21 are transitioned with an arc with a radius of 3 mm, and the edge of the support bar 21 is chamfered with a chamfer radius of 2.5 mm. The material of the second acquisition fixing plate 2 is plexiglass, and the number is 2.

[0042] As Figure 6 shown, both of the two first acquisition fixing plates 1 are installed on the back of the electrode, and the electrode lead rods 9 respectively pass through the two first acquisition fixing plates 1 to be connected to the electrode, and the upper electrode and the lower electrode press the first acquisition fixing plate 1 through gaskets; then one end of the positioning block 7 with a strip-shaped hole is arranged inward at one end of the housing of the gas switch 8, and the outer surface of the positioning block 7 is flush with the end face of the housing; then the second acquisition fixing plate 2 is installed on the sides of the upper electrode and the lower electrode and fixed by the positioning block 7, and finally the other positioning block 7 is installed at the other end of the housing of the gas switch 8 in a symmetric manner.

[0043] In the self-breakdown experiment of the gas switch 8, when the working gas of the gas switch 8 is dry air and the inflation pressure is 2.5 atm, the self-breakdown voltage of the gas switch 8 is 180 kV. Under this state, it operates continuously for 2000 times, and the surface resistivity of the sampling piece 3 drops by 4 orders of magnitude, that is, ablation products are collected on the surface of the sampling piece 3.

Claims

1. A gas switch electrode ablation product collection device, characterized in that: The electrodes inside the gas switch (8) are led out through two electrode lead rods (9) respectively, and include two first collection fixing disks (1) and two second collection fixing disks (2) arranged inside the gas switch (8), and a sampling sheet (3); The two first collection fixing disks (1) are respectively connected to the inner walls of the gas switches (8) corresponding to the upper electrode and the lower electrode through electrode guide rods (9), and the two first collection fixing disks (1) are arranged in parallel; The two second collecting and fixing plates (2) are respectively vertically connected between the two first collecting and fixing plates (1) and are respectively located on both sides of the electrode; The adjacent first collecting fixed disks (1) and the second collecting fixed disks (2) are connected, so that a collecting channel is formed between the two first collecting fixed disks (1) and the two second collecting fixed disks (2); The first collecting fixed disk (1) and the second collecting fixed disk (2) are both provided with mounting holes (5); The sampling sheet (3) is detachably arranged in the mounting hole (5) and is used to collect electrode ablation products in the collection channel when the gas switch (8) is turned on and discharges.

2. The gas switch electrode ablation product collection device according to claim 1, characterized in that: The sampling piece (3) is a circular structure, and two arc protrusions (4) are symmetrically arranged on its circumference; the circle formed by the two arc protrusions (4) is concentric with the sampling piece (3); The mounting hole (5) comprises a through hole (51) adapted to the sampling sheet (3) and a groove (52) adapted to the arc protrusion (4); the through hole (51) is in communication with the groove (52); Two inner grooves (6) are symmetrically arranged on the inner wall of the through hole (51) along the circumference, and the starting end of each inner groove (6) is connected to the groove (52), and the terminal end is a blind groove; The diameter of the circle formed by the two arc protrusions (4) on each mounting hole (5) is less than or equal to the diameter of the circle formed by the bottoms of the two inner grooves (6), and the width of the inner grooves (6) is greater than or equal to the thickness of the sampling sheet (3), so that the arc protrusion (4) can be screwed into or out of the inner grooves (6).

3. The gas switch electrode ablation product collection device according to claim 2, characterized in that: The first collecting fixed plate (1) and the second collecting fixed plate (2) are both rectangular flat plate structures; The first collecting fixed disk (1) is provided with two mounting holes (5), and the two mounting holes (5) are arranged along the length direction of the first collecting fixed disk (1) and are respectively located on both sides of the upper electrode or the lower electrode; The second collection fixing plate (2) is provided with a mounting hole (5) for mounting a sampling sheet (3), and the mounting hole (5) is arranged opposite to the discharge gap between the upper electrode and the lower electrode.

4. The gas switch electrode ablation product collection device according to claim 3, characterized in that: The angle between the connecting line of the starting end and the terminal end of the inner groove (6) and the long side of the corresponding first collecting fixed disk (1) or the second collecting fixed disk (2) is 90°; the angle between the connecting line of the centers of the two grooves (52) on each mounting hole (5) and the long side of the corresponding first collecting fixed disk (1) or the second collecting fixed disk (2) is 37.5°.

5. The gas switch electrode ablation product collection device according to claim 1, characterized in that: Also includes two positioning blocks (7); The two positioning blocks (7) are respectively arranged at two ends inside the gas switch (8) and are used to position the two second collection fixing plates (2).

6. The gas switch electrode ablation product collection device according to claim 5, characterized in that: Two support bars (21) are symmetrically arranged at two ends of the second collecting fixed plate (2); The positioning block (7) is provided with a strip-shaped hole matched with the support bar (21), and the two second collecting fixed plates (2) are positioned through the cooperation of the support bar (21) and the strip-shaped hole.

7. The gas switch electrode ablation product collection device according to claim 6, characterized in that: There is an arc transition between the arc protrusion (4) and the sampling piece (3); There is an arc transition between the second collecting fixed plate (2) and the supporting bar (21).

8. The gas switch electrode ablation product collection device according to claim 8, characterized in that: The first collecting fixed plate (1) and the second collecting fixed plate (2) are both made of organic glass; The sampling piece (3) has a thickness of 1-2 mm and is made of polytetrafluoroethylene; The material of the positioning block (7) is nylon or organic glass.

9. The gas switch electrode ablation product collection device according to claim 2, characterized in that: The sampling piece (3) and the two arc protrusions (4) are made in one piece.

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