CN113702819A - Electric arc experimental apparatus - Google Patents
Electric arc experimental apparatus Download PDFInfo
- Publication number
- CN113702819A CN113702819A CN202110981310.6A CN202110981310A CN113702819A CN 113702819 A CN113702819 A CN 113702819A CN 202110981310 A CN202110981310 A CN 202110981310A CN 113702819 A CN113702819 A CN 113702819A
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- base
- oil
- arc
- cylindrical cavity
- micrometer
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- 238000010891 electric arc Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 230000001133 acceleration Effects 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 46
- 229910052742 iron Inorganic materials 0.000 claims description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 238000002474 experimental method Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000004581 coalescence Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Abstract
The invention relates to an arc experimental device, which comprises a cylindrical cavity, a top end component, an arc component, a measuring component, a base and a base component, wherein the arc component is arranged on the top end of the cylindrical cavity; the method comprises the following steps of controlling the distance between an upper electrode and a lower electrode by using a micrometer-like ruler in an arc assembly so as to control the length and the energy of an arc, simulating arc faults under different energies, increasing the oil temperature by using a heating pipe in the arc assembly so as to simulate the oil temperature under the normal working condition of oil-immersed power equipment, obtaining a product after arc discharge by using a second gas taking valve in a top end assembly and a first oil drain valve and a second oil drain valve in a bottom end assembly, and measuring the vibration in a cavity by using an acceleration sensor in a measuring assembly; a chamber pressure value can be obtained by a pressure transducer in the tip assembly. The invention can accurately study the change caused by arc discharge through the arc experimental device, provides data reference for the control of the power equipment with the oiled paper insulation structure and also improves the safety of the equipment.
Description
Technical Field
The invention relates to the field of arc experiments, in particular to an experimental device for arc discharge in insulating oil
Background
In an electric power system, there are various electric power apparatuses using an oil-paper insulation structure inside, such as an oil-immersed transformer, an oil-paper insulation bushing, and the like. The insulation requirement of the equipment is completed by utilizing good electrical characteristics of insulating oil and insulating paper, but micro bubbles can be generated inside the oil paper insulation along with the long-time operation of the equipment, and the discharge possibility is increased along with the movement and coalescence of the micro bubbles in an oil passage of the transformer. When discharge occurs, the arc with larger energy leads the surrounding insulating oil to be cracked and gasified, so that more bubbles are generated, further more serious faults of the electrical equipment are caused, and the normal operation is influenced. Meanwhile, discharge in the oil-filled closed space can cause generation of a large amount of gas, so that the pressure of equipment is rapidly increased, and dangerous accidents such as explosion and explosion can occur. In order to prevent such accidents, it is necessary to provide a basis for improving the structure of the electrical equipment and to study the progress of the changes caused by the arc discharge.
Disclosure of Invention
The invention aims to provide an arc experimental device which can accurately judge the pressure change of a cavity caused by bubble discharge.
In order to achieve the purpose, the invention provides the following scheme:
an arc experiment apparatus, the apparatus comprising: cylindrical cavity, top subassembly, electric arc subassembly, measuring component, base and base subassembly.
The cylindrical cavity includes: a cylindrical cavity top cover and a cylindrical cavity base; the cylindrical cavity base is connected with the base;
the tip assembly includes: the oil conservator, the second air taking valve, the second oil inlet, the pressure transmitter and the insulating column; the top end component is arranged on the top cover of the cylindrical cavity;
the arc assembly: the device comprises a micrometer-like ruler, a spring, a circular iron sheet, a guide rod base, an upper electrode base, a lower electrode base, a guide rail, an oil guide pipe and a heating pipe; the spring, the circular iron sheet, the guide rod base, the upper electrode base, the lower electrode base and the guide rail are all arranged in the cylindrical cavity; the upper electrode is fixed on the upper electrode base, the upper electrode base can slide relative to the guide rail, the lower electrode is arranged on the lower electrode base, the lower electrode base is fixed on the guide rail, and the upper electrode is opposite to the lower electrode; the micrometer penetrates through the cylindrical cavity and is connected with the spring through the circular iron sheet, the guide rod is arranged in the spring, one end of the guide rod is connected with the circular iron sheet, and the other end of the guide rod is connected with the guide rod base; the guide rod base is connected with the upper electrode base; one end of the oil guide pipe is arranged between the upper electrode and the lower electrode; the heating pipe is arranged at the bottom of the cylindrical cavity;
the measurement assembly includes: a temperature sensor and an acceleration sensor; the temperature sensor and the acceleration sensor are arranged on the guide rail;
the base assembly includes: the device comprises a heating pipe electrode, a first oil delivery pipe, a first oil drain valve, a second oil delivery pipe and a second oil drain valve; the heating pipe electrode is connected with the heating pipe through the cylindrical cavity base, and the first oil delivery pipe and the second oil delivery pipe are connected with the other end of the oil guide pipe through the cylindrical cavity base; the first oil drain valve is arranged on the first oil delivery pipe, and the second oil drain valve is arranged on the second oil delivery pipe.
Optionally, the conservator comprises: the first safety valve, the first oil inlet, the first air intake valve and the conservator valve; the first oil inlet is formed in the upper end of the oil conservator, and the oil conservator valve is arranged on a pipeline connecting the oil conservator and the cylindrical cavity; the first safety valve, the first oil inlet and the first air intake valve are all connected with the oil conservator through threads.
Optionally, a copper core is arranged in the insulating column, and the copper core is connected with the upper electrode through a copper wire.
Optionally, a micrometer-like base is arranged on the cylindrical cavity top cover, and the micrometer-like is inserted into a hole of the micrometer-like base; the micrometer-like comprises a micrometer-like micrometer screw rod, and the micrometer-like micrometer screw rod is connected with the circular iron sheet.
Optionally, one end of the guide rod is connected with the circular iron sheet in a welding mode, and the micrometer-like screw rod is connected with the circular iron sheet in a welding mode.
Optionally, the cylindrical cavity top cover is provided with an aviation plug.
Optionally, an observation window is arranged on the side surface of the cylindrical cavity.
Optionally, a lower observation window is arranged on the cylindrical cavity base.
Optionally, the tip assembly further comprises: an insulating column base; the insulating column is arranged on the cylindrical cavity top cover through the insulating column base.
Optionally, the top end of the guide rail is connected with the cylindrical cavity top cover.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the invention has reasonable design and skillful structure, adopts the design of a micrometer-like ruler to control the distance between the upper electrode and the lower electrode, further can control the arc length of the electric arc, can simply control the energy of the electric arc according to the different waiting time after the electric arc is generated, and can obtain accurate electric arc energy by the subsequent data processing. Meanwhile, the experimental device utilizes the heating pipe in the electric arc component to increase the oil temperature so as to simulate the working environment of the oil-immersed power equipment under the normal working condition, and provides an experimental device for analyzing the electric arc fault caused by bubble discharge of the oil-immersed power equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic view of the overall structure of an arc experimental apparatus according to the present invention.
Fig. 2 is a schematic structural view of a tip assembly of the arc experimental apparatus of the present invention.
Fig. 3 is a schematic diagram of the internal structure of the chamber of the arc experimental apparatus of the present invention.
Fig. 4 is a schematic structural view of a bottom assembly of the arc experimental apparatus of the present invention.
Description of the symbols:
1-safety valve, 2-first oil inlet, 3-first air intake valve, 4-conservator, 5-conservator valve, 6-second air intake valve, 7-second oil inlet, 8-type micrometer, 9-type micrometer base, 10-pressure transmitter, 11-insulating column, 12-insulating column base, 13-aviation plug, 14-cylindrical cavity top cover, 15-observation window, 16-cylindrical cavity, 17-type micrometer screw, 18-spring, 181-guide rod, 182-guide rod base, 19-guide rail, 20-upper electrode base, 21-upper electrode, 22-lower electrode, 23-lower electrode base, 24-oil guide pipe, 25-temperature sensor, 26-acceleration sensor, 27-a heating pipe, 28-a cylindrical cavity base, 29-a heating pipe electrode, 30-a lower observation window, 31-a first oil pipeline, 32-a second oil pipeline, 33-a first oil drain valve, 34-a second oil drain valve, and 35-a base.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an arc experimental device which can accurately judge the pressure change of a cavity caused by bubble discharge.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 of the present invention shows an overall structural schematic diagram of an arc experimental apparatus, and fig. 2 to 4 respectively show a structural schematic diagram of a top component of the arc experimental apparatus, a structural schematic diagram of a cavity interior of the arc experimental apparatus, and a structural schematic diagram of a bottom component of the arc experimental apparatus.
The arc experimental apparatus of the present invention comprises: a cylindrical chamber 16, a tip assembly, an arc assembly, a measurement assembly, a base 35, and a base assembly.
The cylindrical cavity 16 includes: a cylindrical chamber top cover 14 and a cylindrical chamber base 28; the cylindrical chamber base 28 is connected to the base 35. The cylindrical cavity 16 is connected with the cylindrical cavity top cover 14 through bolts, and the cylindrical cavity 16 is connected with the base 35 through a welding mode.
The tip assembly includes: the oil conservator 4, the second air intake valve 6, the second oil inlet 7, the pressure transmitter 10, the insulating column 11 and the aviation plug 13; the tip assembly is bolted to the cylindrical chamber top cover 14. Pressure transmitter 10 is used to measure the internal pressure of cylindrical cavity 16. The second gas sampling valve 6 is used for sampling gas generated in the cylindrical cavity 16. The aviation plug 13 facilitates sensor outlet inside the cylindrical cavity 16. The insulating column 11 is provided with a copper core, and the copper core is connected with the upper electrode 21 through a copper wire. The power supply applies a voltage current across the upper electrode through the copper core in the insulating column 11. An insulating column base 12; the insulating column 11 is arranged on a cylindrical cavity top cover 14 via an insulating column base 12.
An arc component: the device comprises a micrometer-like ruler 8, a spring 18, a round iron sheet, a guide rod 181, a guide rod base 182, an upper electrode 21, an upper electrode base 20, a lower electrode 22, a lower electrode base 23, a guide rail 19, an oil guide pipe 24 and a heating pipe 27; the spring 18, the round iron sheet, the guide rod 181, the guide rod base 182, the upper electrode 21, the upper electrode base 20, the lower electrode 22, the lower electrode base 23 and the guide rail 19 are all arranged inside the cylindrical cavity 16; the upper electrode 21 is fixed on the upper electrode base 20 through screws, the upper electrode base 20 can slide relative to the guide rail 19, the lower electrode 22 is arranged on the lower electrode base 23 through screws, the lower electrode base 23 is fixed on the guide rail 19, and the upper electrode 21 is opposite to the lower electrode 22; the similar micrometer 8 penetrates through the cylindrical cavity 16 and is connected with the spring 18 through a circular iron sheet, a guide rod 181 is arranged in the spring 18, one end of the guide rod 181 is connected with the circular iron sheet in a welding mode, the other end of the guide rod 181 is connected with a guide rod base 182 through a screw, specifically, the similar micrometer base 9 is arranged on the cylindrical cavity top cover 14, and the similar micrometer 8 is inserted into a hole of the similar micrometer base 9; the micrometer-like 8 comprises a micrometer-like micrometer screw rod 17, the micrometer-like micrometer screw rod 17 is connected with the circular iron sheet, and the guide rod base 182 is connected with the upper electrode base 20 through a screw. The bottom end of the guide rod base 182 is provided with a rectangular groove, so that the top end of the upper electrode 21 is conveniently connected with the copper core of the insulating column 11 on the top cover 14 of the cylindrical cavity through a copper wire. The rotating micrometer 8 makes the micrometer screw 17 extend outwards, the micrometer screw 17 withstands the round iron sheet, the round iron sheet pressing spring 18 and the guide rod 181 move downwards, so that the upper electrode base 20 moves and the upper electrode 21 moves downwards. When the micrometer screw 17 of the 8-type micrometer is rotated to contract inwards, the compressed spring 18 applies upward force to the round iron sheet at the top end of the guide rod 181, and the round iron sheet moves upwards. Since the circular patch is welded with the guide rod 181, the guide rod 181 will move upward, and drive the upper electrode base and the upper electrode to move upward. The top end of the guide rail 19 is connected to the cylindrical chamber top cover 14. One end of the oil conduit 24 is arranged between the upper electrode 21 and the lower electrode 22; the heating pipe 27 is arranged at the bottom of the cylindrical cavity 16 and used for heating insulating oil inside the cylindrical cavity 16 and simulating the normal operation temperature of the electrical equipment.
The measuring assembly comprises: a temperature sensor 25 and an acceleration sensor 26; the temperature sensor 25 and the acceleration sensor 26 are fixed on the guide rail 19 by screws;
the base assembly includes: a heater tube electrode 29, a first delivery pipe 31, a first bleed valve 33, a second delivery pipe 32, and a second bleed valve 34; the heating pipe electrode 29 is connected with the heating pipe 27 through the cylindrical cavity base 28, and the first oil delivery pipe 31 and the second oil delivery pipe 32 are both connected with the other end of the oil guide pipe 24 through the cylindrical cavity base 28; the first oil drain valve 33 is provided in the first oil delivery pipe 31, and the second oil drain valve 34 is provided in the second oil delivery pipe 32.
The conservator 4 specifically comprises: the first safety valve 1, the first oil inlet 2, the first air intake valve 3 and the conservator valve 5; the first oil inlet 2 is arranged at the upper end of the oil conservator 4. The conservator valve 5 is arranged on a pipeline connecting the conservator 4 and the cylindrical cavity 16, the open conservator valve 5 can be used for filling oil into the cylindrical cavity 16, and the close conservator valve 5 prevents gas from entering the conservator. The first safety valve 1, the first oil inlet 2 and the first air intake valve 3 are all connected with the oil conservator 4 through threads. The first relief valve 1 prevents the internal pressure of the conservator 4 from becoming too high.
The side of the cylindrical cavity 16 is provided with an observation window 15, and the cylindrical cavity base 28 is provided with a lower observation window 30, so that the arc reaction condition inside the cylindrical cavity 16 can be conveniently observed.
Compared with the prior art, the invention has the technical effects that:
the method comprises the following steps of controlling the distance between an upper electrode and a lower electrode by using a micrometer-like ruler in an arc assembly so as to control the length and the energy of an arc, simulating arc faults under different energies, increasing the oil temperature by using a heating pipe in the arc assembly so as to simulate the oil temperature under the normal working condition of oil-immersed power equipment, obtaining a product after arc discharge by using a second gas taking valve in a top end assembly and a first oil drain valve and a second oil drain valve in a bottom end assembly, and measuring the vibration in a cavity by using an acceleration sensor in a measuring assembly; a chamber pressure value can be obtained by a pressure transducer in the tip assembly. The invention can accurately study the change caused by arc discharge through the arc experimental device, provides data reference for the control of the power equipment with the oiled paper insulation structure and also improves the safety of the equipment. The arc experimental device is reasonable in design and ingenious in structure, the distance between the electrodes can be controlled by adopting a micrometer-like design, the arc length of the arc can be further controlled, the energy of the arc can be simply controlled by the difference of waiting time after the arc is generated, and accurate arc energy can be obtained by processing data subsequently.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. An arc experiment apparatus, characterized in that the apparatus comprises: cylindrical cavity, top subassembly, electric arc subassembly, measuring component, base and base subassembly.
The cylindrical cavity includes: a cylindrical cavity top cover and a cylindrical cavity base; the cylindrical cavity base is connected with the base;
the tip assembly includes: the oil conservator, the second air taking valve, the second oil inlet, the pressure transmitter and the insulating column; the top end component is arranged on the top cover of the cylindrical cavity;
the arc assembly: the device comprises a micrometer-like ruler, a spring, a circular iron sheet, a guide rod base, an upper electrode base, a lower electrode base, a guide rail, an oil guide pipe and a heating pipe; the spring, the circular iron sheet, the guide rod base, the upper electrode base, the lower electrode base and the guide rail are all arranged in the cylindrical cavity; the upper electrode is fixed on the upper electrode base, the upper electrode base can slide relative to the guide rail, the lower electrode is arranged on the lower electrode base, the lower electrode base is fixed on the guide rail, and the upper electrode is opposite to the lower electrode; the micrometer penetrates through the cylindrical cavity and is connected with the spring through the circular iron sheet, the guide rod is arranged in the spring, one end of the guide rod is connected with the circular iron sheet, and the other end of the guide rod is connected with the guide rod base; the guide rod base is connected with the upper electrode base; one end of the oil guide pipe is arranged between the upper electrode and the lower electrode; the heating pipe is arranged at the bottom of the cylindrical cavity;
the measurement assembly includes: a temperature sensor and an acceleration sensor; the temperature sensor and the acceleration sensor are arranged on the guide rail;
the base assembly includes: the device comprises a heating pipe electrode, a first oil delivery pipe, a first oil drain valve, a second oil delivery pipe and a second oil drain valve; the heating pipe electrode is connected with the heating pipe through the cylindrical cavity base, and the first oil delivery pipe and the second oil delivery pipe are connected with the other end of the oil guide pipe through the cylindrical cavity base; the first oil drain valve is arranged on the first oil delivery pipe, and the second oil drain valve is arranged on the second oil delivery pipe.
2. The arc experiment apparatus of claim 1, wherein the conservator comprises: the first safety valve, the first oil inlet, the first air intake valve and the conservator valve; the first oil inlet is formed in the upper end of the oil conservator, and the oil conservator valve is arranged on a pipeline connecting the oil conservator and the cylindrical cavity; the first safety valve, the first oil inlet and the first air intake valve are all connected with the oil conservator through threads.
3. The arc experiment device according to claim 1, wherein a copper core is disposed in the insulating cylinder, and the copper core is connected to the upper electrode through a copper wire.
4. The arc experimental apparatus according to claim 1, wherein a micrometer-like base is disposed on the cylindrical chamber top cover, and the micrometer-like is inserted into a hole of the micrometer-like base; the micrometer-like comprises a micrometer-like micrometer screw rod, and the micrometer-like micrometer screw rod is connected with the circular iron sheet.
5. The arc experimental apparatus according to claim 4, wherein one end of the guide rod is connected with the circular iron sheet in a welding manner, and the micrometer-like screw is connected with the circular iron sheet in a welding manner.
6. The arc testing apparatus of claim 1, wherein said cylindrical chamber top cap is provided with an aircraft plug.
7. The arc experiment device according to claim 1, wherein a side surface of the cylindrical cavity is provided with an observation window.
8. The arc experiment device according to claim 1, wherein a lower observation window is arranged on the cylindrical cavity base.
9. The arc experiment device of claim 1, wherein the tip assembly further comprises: an insulating column base; the insulating column is arranged on the cylindrical cavity top cover through the insulating column base.
10. The arc experiment device according to claim 1, wherein the top end of the guide rail is connected to the cylindrical chamber top cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110981310.6A CN113702819A (en) | 2021-08-25 | 2021-08-25 | Electric arc experimental apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110981310.6A CN113702819A (en) | 2021-08-25 | 2021-08-25 | Electric arc experimental apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN113702819A true CN113702819A (en) | 2021-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110981310.6A Pending CN113702819A (en) | 2021-08-25 | 2021-08-25 | Electric arc experimental apparatus |
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| Country | Link |
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| CN (1) | CN113702819A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355131A (en) * | 2022-03-21 | 2022-04-15 | 合肥航太电物理技术有限公司 | EWIS electric arc test device suitable for low atmospheric pressure environment |
-
2021
- 2021-08-25 CN CN202110981310.6A patent/CN113702819A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355131A (en) * | 2022-03-21 | 2022-04-15 | 合肥航太电物理技术有限公司 | EWIS electric arc test device suitable for low atmospheric pressure environment |
| CN114355131B (en) * | 2022-03-21 | 2022-05-17 | 合肥航太电物理技术有限公司 | EWIS electric arc test device suitable for low atmospheric pressure environment |
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