CN110600997B - Experimental electrode structure for accurately adjusting interelectrode barrier and operation method thereof - Google Patents
Experimental electrode structure for accurately adjusting interelectrode barrier and operation method thereof Download PDFInfo
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- CN110600997B CN110600997B CN201910887851.5A CN201910887851A CN110600997B CN 110600997 B CN110600997 B CN 110600997B CN 201910887851 A CN201910887851 A CN 201910887851A CN 110600997 B CN110600997 B CN 110600997B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/20—Means for starting arc or facilitating ignition of spark gap
- H01T1/22—Means for starting arc or facilitating ignition of spark gap by the shape or the composition of the electrodes
Abstract
An experimental electrode structure for accurately adjusting an interelectrode barrier and an operation method thereof belong to the technical field of discharge experiments. The invention solves the problems of complicated operation and low measurement accuracy of the discharge experiment for researching the inter-electrode insulation barrier caused by inconvenient position adjustment and low adjustment precision of the existing inter-electrode insulation barrier. The upper insulating flat plate is fixedly arranged above the lower insulating flat plate in parallel through two insulating support columns, the barrier fixing plate is sleeved on the two insulating support columns and is arranged between the upper insulating flat plate and the lower insulating flat plate in an up-and-down sliding mode, and the barrier fixing plate and each insulating support column are limited through limiting parts; scales are arranged on each insulating support; the middle part of the barrier fixing plate is vertically provided with a through hole, the upper flat plate electrode and the lower flat plate electrode are respectively positioned at the upper side and the lower side of the through hole and are arranged oppositely, the upper flat plate electrode is fixedly connected with the upper insulating flat plate, and the lower flat plate electrode is fixedly connected with the lower insulating flat plate.
Description
Technical Field
The invention relates to an experimental electrode structure for accurately adjusting an interelectrode barrier and an operation method thereof, and belongs to the technical field of discharge experiments.
Background
In the technical field of dielectric discharge experiments, the discharge rule of an insulating medium is always a key problem for research of numerous scholars. The discharge experiment of the insulating medium is an important method for researching the discharge mechanism. When the discharge mechanism of an insulating medium is researched in a laboratory, a needle plate electrode or a flat plate electrode structure is mostly adopted, and the type of the electrode and the medium filled between the electrodes have important influence on the gap discharge process.
In designing the insulation structure, there are different insulation modes, and an electrode covering type insulation structure is often encountered, such as an insulation barrier (insulation paper board) with a certain size is placed between windings of a transformer. Therefore, in the study of discharge laws, the discharge characteristics of the medium after the electrode coating is also a major concern. The electrode covering can be generally expressed by adding an insulating dielectric sheet between parallel plate electrodes, which can effectively block and control the distribution and movement of space charges between the electrodes, improve the distribution of a discharge gap electric field and improve the breakdown strength of a medium. In the process of medium discharge, the insulating barrier mainly plays a role in limiting current and preventing arc discharge.
When the influence of an insulating medium on the discharge of an electrode gap is researched, the influence rule of different positions of an insulating barrier in the electrode on the discharge of the gap is often needed to be researched. This requires that the experimenter, when conducting the experiment, must make a dedicated electrode structure that allows the insulation barrier to move freely at different positions in the electrode gap. However, the electrode structure that adopts in the laboratory at present can't adjust the inter-electrode barrier accurately, generally need measure the distance after manual adjustment again, and this kind of operation is very inconvenient and the degree of accuracy of measuring the distance is on the low side, and the position of also giving the quantitative research insulating barrier simultaneously brings the trouble to the influence rule of clearance discharge.
Disclosure of Invention
The invention aims to solve the problems of complex operation and low measurement accuracy of an experiment for researching discharge of an inter-electrode insulation barrier caused by inconvenient position adjustment and low adjustment precision of the existing inter-electrode insulation barrier, and further provides an experimental electrode structure for accurately adjusting the inter-electrode barrier and an operation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an experimental electrode structure for accurately adjusting an interelectrode barrier comprises an upper insulating flat plate, a lower insulating flat plate, an upper flat plate electrode, a lower flat plate electrode, a barrier fixing plate and two insulating support columns, wherein the upper insulating flat plate is fixedly arranged above the lower insulating flat plate in parallel through the two insulating support columns; scales are arranged on each insulating support;
the middle part of the barrier fixing plate is vertically provided with a through hole, the upper flat plate electrode and the lower flat plate electrode are respectively positioned at the upper side and the lower side of the through hole and are arranged oppositely, the upper flat plate electrode is fixedly connected with the upper insulating flat plate, and the lower flat plate electrode is fixedly connected with the lower insulating flat plate.
Furthermore, two fixing clamping pieces are fixedly arranged on the barrier fixing plate, and the two fixing clamping pieces are arranged on two sides of the through hole in parallel.
Furthermore, two insulating supporting blocks are fixedly arranged at the bottom of the lower insulating flat plate, and the two insulating supporting blocks and the two insulating supporting columns are arranged in a one-to-one correspondence mode.
Furthermore, the lower parts of the two insulating support columns penetrate through the two insulating support blocks in a one-to-one correspondence mode.
Furthermore, the upper flat plate electrode comprises a first circular plate and a first connecting rod vertically fixedly connected to the upper end face of the first circular plate, the first circular plate is connected to the upper insulating flat plate through the first connecting rod in a threaded mode and fixed through a nut, the lower flat plate electrode comprises a second circular plate and a second connecting rod vertically fixedly connected to the lower end face of the second circular plate, and the second circular plate is connected to the lower insulating flat plate through the second connecting rod in a threaded mode and fixed through a nut.
Further, the limiting part is of a hoop structure.
Further, the through hole is a rectangular through hole.
An operation method for accurately adjusting the inter-electrode barrier by adopting the experimental electrode structure comprises the following steps:
before an experiment, connecting an upper flat plate electrode with high voltage, connecting a lower flat plate electrode with low voltage, switching on a power supply, starting a voltage regulator and a test transformer, uniformly increasing test voltage at the speed of 500V/S until an electrode gap is broken down, recording the voltage value at the moment, and then switching off the power supply;
placing the insulating barrier on the barrier fixing plate to cover the insulating barrier above the through hole, and fixing the edge of the insulating barrier;
moving the barrier fixing plate to an initial position by adjusting the limiting piece, wherein the insulating barrier is in gapless contact with the upper flat plate electrode;
step four, during the experiment, the power supply is switched on, and the voltage regulator and the test transformer are started;
step five, uniformly increasing the test voltage at the speed of 500V/S, and when the gap between the upper flat plate electrode and the lower flat plate electrode breaks down, along with the breakdown of the insulation barrier between the electrodes, pausing the test, disconnecting the power supply, and taking down the broken insulation barrier;
moving the barrier fixing plate downwards, selecting a plurality of different height positions within the up-down moving range of the barrier fixing plate, placing a new insulating barrier on the barrier fixing plate according to the mode of the step two after the height position is adjusted each time, repeating the step four to the step five to continue the test, and recording the relative positions of the insulating barrier, the upper flat plate electrode and the lower flat plate electrode when the barrier fixing plate is at the different height positions;
and step seven, moving the barrier fixing plate to a final position, enabling the insulating barrier to be in gapless contact with the lower flat plate electrode, and after the step four to the step five are repeated, finishing the test.
Further, in the second step, the edge of the insulating barrier is fixed by two fixing clips.
Compared with the prior art, the invention has the following effects:
realize the position control of insulating protective screen between two flat electrodes through the locating part in this application, the position of accurate adjustment insulating protective screen is realized to cooperation scale part, compares with prior art, and insulating protective screen position control is more convenient, and it is higher to adjust the precision, effectively improves experiment degree of accuracy and experimental efficiency, more helps studying the influence law of the position of insulating protective screen to gap discharge.
Drawings
FIG. 1 is a schematic front view of the present application;
FIG. 2 is a schematic top view of the present application;
fig. 3 is a schematic top view of a barrier fixing plate;
fig. 4 is a front view of the barrier securing plate;
fig. 5 is a top view of the limiting member.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 5, and an experimental electrode structure for accurately adjusting an inter-electrode barrier includes an upper insulating plate 1, a lower insulating plate 2, an upper plate electrode 3, a lower plate electrode 4, a barrier fixing plate 5, and two insulating support columns 6, wherein the upper insulating plate 1 is fixedly disposed above the lower insulating plate 2 in parallel via the two insulating support columns 6, the barrier fixing plate 5 is sleeved on the two insulating support columns 6, and is disposed between the upper insulating plate 1 and the lower insulating plate 2 in a vertically sliding manner, and the barrier fixing plate 5 and each insulating support column 6 are respectively limited by a limiting member 7; each insulating support 6 is provided with a scale 8;
the middle part of the barrier fixing plate 5 is vertically provided with a through hole 51, the upper flat plate electrode 3 and the lower flat plate electrode 4 are respectively positioned at the upper side and the lower side of the through hole 51 and are arranged oppositely, the upper flat plate electrode 3 is fixedly connected with the upper insulating flat plate 1, and the lower flat plate electrode 4 is fixedly connected with the lower insulating flat plate 2.
The upper insulating plate 1 and the lower insulating plate 2 are arranged opposite to each other up and down, and the through hole 51 is preferably arranged opposite to both the upper insulating plate 1 and the lower insulating plate 2. The upper insulating flat plate 1 and the lower insulating flat plate 2 are both rectangular insulating plates; the barrier fixing plate 5 is a rectangular insulating plate.
The two insulating pillars 6 are both cylindrical insulating rods, and the division value of the scales 8 on the insulating pillars 6 is 1 mm. The insulating support 6 and the insulating flat plate and the barrier fixing plate 5 are all arranged perpendicular to each other.
In the application, the position of the upper flat plate electrode 3 on the upper insulating flat plate 1 and the position of the lower flat plate electrode 4 on the lower insulating flat plate 2 can be adjusted, so that the distance between the upper flat plate electrode 3 and the lower flat plate electrode 4 can be adjusted, and the operation is simple and convenient; the position of locating part 7 on insulating pillar 6 is adjustable to realize the position of insulating barrier between two flat electrodes, the position of accurate adjustment insulating barrier is realized to cooperation scale 8 part, compares with prior art, more helps studying the influence rule of the position of insulating barrier to the clearance discharge.
Two fixing clamping pieces 9 are fixedly arranged on the barrier fixing plate 5, and the two fixing clamping pieces 9 are arranged on two sides of the through hole 51 in parallel. The fixed clamping piece 9 is a long-strip-shaped stainless steel sheet, the thickness is preferably 0.5mm, four corner positions of each fixed clamping piece 9 can be set to be in a round angle structure, and each fixed clamping piece 9 is fixedly installed on the barrier fixing plate 5 through two screws. Insert insulating barrier in fixed clamping piece 9 during the experiment and be used for fixing, prevent that the loose insulating paper of quality from dropping, influence the accuracy of experimental result
Two insulation support blocks 10 are fixedly arranged at the bottom of the lower insulation flat plate 2, and the two insulation support blocks 10 are arranged in one-to-one correspondence with the two insulation struts 6. The insulating support block 10 is an epoxy insulating block.
The lower parts of the two insulating support columns 6 are correspondingly arranged on the two insulating support blocks 10 in a penetrating mode.
The upper plate electrode 3 comprises a first circular plate 31 and a first connecting rod 32 vertically fixed on the upper end surface of the first circular plate 31, the first circular plate 31 is connected on the upper insulation plate 1 through the first connecting rod 32 by screw threads and fixed through nuts, the lower plate electrode 4 comprises a second circular plate 41 and a second connecting rod 42 vertically fixed on the lower end surface of the second circular plate 41, and the second circular plate 41 is connected on the lower insulation plate 2 through the second connecting rod 42 by screw threads and fixed through nuts. The first circular plate 31 and the second circular plate 41 are both subjected to surface polishing treatment, threads are machined on the outer surface of the connecting rod, the positions of the circular plates are adjusted by adjusting the positions of the connecting rod on the corresponding insulating flat plate, and finally the position adjustment of the flat electric plate is realized.
The limiting piece 7 is of a hoop structure. The structure is simple, and the position of the barrier fixing plate 5 on the insulating support 6 can be conveniently adjusted. The hoop structure can be in any form, for example, the hoop structure can be formed by connecting a left half hoop and a right half hoop after the left half hoop and the right half hoop are closed, the left half hoop and the right half hoop are both semicircular, two ends of the semicircular are bent outwards to form mounting lugs respectively, and the two mounting lugs which are arranged oppositely are fixedly connected through bolts. The left and right two half sheet hoops can be made of stainless steel and have the thickness of 2 mm.
The through hole 51 is a rectangular through hole.
An operation method for accurately adjusting the inter-electrode barrier by adopting the experimental electrode structure comprises the following steps:
before an experiment, connecting an upper flat plate electrode with high voltage, connecting a lower flat plate electrode with low voltage, switching on a power supply, starting a voltage regulator and a test transformer, uniformly increasing test voltage at the speed of 500V/S until an electrode gap is broken down, recording the voltage value at the moment, and then switching off the power supply;
placing the insulating barrier on the barrier fixing plate to cover the insulating barrier above the through hole, and fixing the edge of the insulating barrier;
moving the barrier fixing plate to an initial position by adjusting the limiting piece, wherein the insulating barrier is in gapless contact with the upper flat plate electrode; the position of the limiting piece on the insulating support column is adjusted to achieve position adjustment and fixing of the barrier fixing plate, and the position of the insulating barrier between the electrodes is determined by matching with the scales on the insulating support column.
Step four, during the experiment, the power supply is switched on, and the voltage regulator and the test transformer are started;
step five, uniformly increasing the test voltage at the speed of 500V/S, and when the gap between the upper flat plate electrode and the lower flat plate electrode breaks down, along with the breakdown of the insulation barrier between the electrodes, pausing the test, disconnecting the power supply, and taking down the broken insulation barrier;
moving the barrier fixing plate downwards, selecting a plurality of different height positions within the up-down moving range of the barrier fixing plate, placing a new insulating barrier on the barrier fixing plate according to the mode of the step two after the height position is adjusted each time, repeating the step four to the step five to continue the test, and recording the relative positions of the insulating barrier, the upper flat plate electrode and the lower flat plate electrode when the barrier fixing plate is at the different height positions;
and step seven, moving the barrier fixing plate to a final position, enabling the insulating barrier to be in gapless contact with the lower flat plate electrode, and after the step four to the step five are repeated, finishing the test. The rule of the influence of the position of the insulating barrier between the two electrodes on gap discharge is obtained by measuring the relative positions of the insulating barrier and the upper flat plate electrode and the lower flat plate electrode.
In step two, the edge of the insulating barrier is fixed by two fixing clips 9.
The second embodiment is as follows: the upper insulating flat plate 1 is a rectangular epoxy resin insulating plate with the length of 240mm, the width of 60mm and the thickness of 10mm, and the lower insulating flat plate 2 is a rectangular epoxy resin insulating plate with the length of 300mm, the width of 200mm and the thickness of 10 mm; the insulating support 6 is a cylindrical epoxy resin insulating rod with the length of 300mm and the diameter of 15 mm; the scales 8 on the two insulating support columns 6 have the same measuring range, both are 0-100mm, and the division values are both 1 mm; the insulation supporting block 10 is an epoxy resin insulation block;
two end parts of the upper insulating flat plate 1 and two end parts of the lower insulating flat plate 2 are respectively provided with a first connecting hole, and two insulating struts 6 correspondingly penetrate through the four first connecting holes, wherein the inner diameter of each first connecting hole is 15 mm;
a second connecting hole with the inner diameter of 15mm is processed on the insulating supporting block 10, and the two insulating supports 6 are correspondingly arranged in the two insulating supporting blocks 10 in a penetrating manner;
the middle part of the upper insulating flat plate 1 and the middle part of the lower insulating flat plate 2 are respectively provided with a third connecting hole with the inner diameter of 10 mm;
the upper flat plate electrode 3 and the lower flat plate electrode 4 are both processed by brass, the outer diameters of the first circular plate 31 and the second circular plate 41 are both 80mm, the thicknesses of the first circular plate and the second circular plate are both 10mm, and the surfaces of the first circular plate and the second circular plate are polished; the lengths of the first connecting rod 32 and the second connecting rod 42 are both 80mm, and the diameters thereof are both 10 mm;
the barrier fixing plate 5 is a rectangular epoxy resin insulating plate with the length of 200mm, the width of 160mm and the thickness of 5mm, and the two end parts of the barrier fixing plate are respectively provided with a fourth connecting hole with the inner diameter of 16mm, so that the barrier fixing plate can slide up and down on the insulating support 6 conveniently;
the insulating barrier is a square with the thickness of 0.1mm and the side length of 120 mm;
the fixed clamping piece 9 is a stainless steel sheet with the length of 130mm, the width of 10mm and the thickness of 0.5mm, two end parts of each fixed clamping piece 9 are respectively provided with a mounting hole with the diameter of 2mm and fixedly connected on the barrier fixing plate 5 through screws, the insulating barrier is inserted into the fixed clamping piece 9 for fixing during the experiment, the quality is prevented from being higher than that of the fixed clamping piece 9
The insulation paper falls off, and the accuracy of an experimental result is influenced.
The locating part 7 is the staple bolt structure, and the radius of left and right two halves piece staple bolts is 7.5mm, and thickness is 2mm, and the length of installation ear is 20mm, and the width is 10mm, and the aperture that is used for connecting bolt on it is 5 mm.
Claims (8)
1. An experimental electrode structure for accurately adjusting an interelectrode barrier is characterized in that: the device comprises an upper insulation flat plate (1), a lower insulation flat plate (2), an upper flat plate electrode (3), a lower flat plate electrode (4), a barrier fixing plate (5) and two insulation support columns (6), wherein the upper insulation flat plate (1) is fixedly arranged above the lower insulation flat plate (2) in parallel through the two insulation support columns (6), the barrier fixing plate (5) is sleeved on the two insulation support columns (6) and is arranged between the upper insulation flat plate (1) and the lower insulation flat plate (2) in a vertically sliding manner, and the barrier fixing plate (5) and each insulation support column (6) are respectively limited through a limiting piece (7); each insulating support column (6) is provided with a scale (8);
through-hole (51) have vertically been seted up at the middle part of protective screen fixed plate (5), go up dull and stereotyped electrode (3) and dull and stereotyped electrode (4) down and be located the upper and lower both sides of through-hole (51) respectively and just to setting up, and go up dull and stereotyped electrode (3) and last insulating flat board (1) rigid coupling, dull and stereotyped electrode (4) and insulating flat board (2) rigid coupling down, two fixed clamping piece (9), and two have set firmly on protective screen fixed plate (5) fixed clamping piece (9) are parallel to each other and set up the both sides at through-hole (51).
2. An experimental electrode structure for accurately adjusting an inter-electrode barrier according to claim 1, wherein: two insulation supporting blocks (10) are fixedly arranged at the bottom of the lower insulation flat plate (2), and the two insulation supporting blocks (10) are arranged in one-to-one correspondence with the two insulation supporting columns (6).
3. An experimental electrode structure for accurately adjusting an inter-electrode barrier according to claim 2, wherein: the lower parts of the two insulating support columns (6) are correspondingly arranged on the two insulating support blocks (10) in a penetrating way.
4. An experimental electrode structure for accurately adjusting an inter-electrode barrier according to claim 1, 2 or 3, wherein: go up dull and stereotyped electrode (3) and include first plectane (31) and perpendicular rigid coupling first connecting rod (32) at first plectane (31) up end, first plectane (31) are fixed through the nut through first connecting rod (32) threaded connection on last insulating flat board (1), lower dull and stereotyped electrode (4) include second plectane (41) and perpendicular rigid coupling second connecting rod (42) at second plectane (41) lower extreme face, second plectane (41) are fixed through the nut through second connecting rod (42) threaded connection on insulating flat board (2) down.
5. An experimental electrode structure for accurately adjusting an inter-electrode barrier according to claim 4, wherein: the limiting piece (7) is of a hoop structure.
6. An experimental electrode structure for accurately adjusting an inter-electrode barrier according to claim 1, 2, 3 or 5, wherein: the through hole (51) is a rectangular through hole.
7. An operating method for accurately adjusting an inter-electrode barrier using an experimental electrode structure according to any one of the preceding claims, characterized in that: it comprises the following steps:
before an experiment, connecting an upper flat plate electrode with high voltage, connecting a lower flat plate electrode with low voltage, switching on a power supply, starting a voltage regulator and a test transformer, uniformly increasing test voltage at the speed of 500V/S until an electrode gap is broken down, recording the voltage value at the moment, and then switching off the power supply;
placing the insulating barrier on the barrier fixing plate to cover the insulating barrier above the through hole, and fixing the edge of the insulating barrier;
moving the barrier fixing plate to an initial position by adjusting the limiting piece, wherein the insulating barrier is in gapless contact with the upper flat plate electrode;
step four, during the experiment, the power supply is switched on, and the voltage regulator and the test transformer are started;
step five, uniformly increasing the test voltage at the speed of 500V/S, and when the gap between the upper flat plate electrode and the lower flat plate electrode breaks down, along with the breakdown of the insulation barrier between the electrodes, pausing the test, disconnecting the power supply, and taking down the broken insulation barrier;
moving the barrier fixing plate downwards, selecting a plurality of different height positions within the up-down moving range of the barrier fixing plate, placing a new insulating barrier on the barrier fixing plate according to the mode of the step two after the height position is adjusted each time, repeating the step four to the step five to continue the test, and recording the relative positions of the insulating barrier, the upper flat plate electrode and the lower flat plate electrode when the barrier fixing plate is at the different height positions;
and step seven, moving the barrier fixing plate to a final position, enabling the insulating barrier to be in gapless contact with the lower flat plate electrode, and after the step four to the step five are repeated, finishing the test.
8. The operating method for precisely adjusting an inter-electrode barrier according to claim 7, wherein: in the second step, the edge of the insulating barrier is fixed by two fixing clamping pieces (9).
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| CN201910887851.5A CN110600997B (en) | 2019-09-19 | 2019-09-19 | Experimental electrode structure for accurately adjusting interelectrode barrier and operation method thereof |
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| CN110600997B true CN110600997B (en) | 2020-12-25 |
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