CN2784942Y - Insulating gas dielectric strength tester - Google Patents
Insulating gas dielectric strength tester Download PDFInfo
- Publication number
- CN2784942Y CN2784942Y CN 200520049902 CN200520049902U CN2784942Y CN 2784942 Y CN2784942 Y CN 2784942Y CN 200520049902 CN200520049902 CN 200520049902 CN 200520049902 U CN200520049902 U CN 200520049902U CN 2784942 Y CN2784942 Y CN 2784942Y
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- end cap
- end cover
- cylinder body
- gas
- hole
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Abstract
The utility model relates to a device for testing the pressure resistance of insulating gas, which is provided with a round cylinder body made from insulating material, wherein both ends of the cylinder body are respectively spliced and fixedly provided with metal flanges, the flanges are respectively provided with end caps fixed by screw bolts, and an O-shaped rubber sealing ring is arranged between the flange and the end cap; a high voltage measuring electrode is fixedly arranged on an upper end cap, a threaded sleeve is fixedly arranged on a lower end cap, and the high voltage measuring electrode for a grounding terminal, which is inscribed with a scale, is screwed in the threaded sleeve; a through hole is arranged on the lower end cap, and is communicated with the cylinder body, the outer end of the through hole is welded with a cross joint, and the other three openings of the cross joint are respectively connected with an air inlet valve, a compound gauge and a vacuum valve; the outlet of the vacuum valve is communicated with a miniature vacuum pump, and the upper part of the lower end cap is also provided with an automatic heating device. The utility model can directly measure the electrical insulating property of the insulating gases of SF< 6 >, etc., and has the advantages of high measuring speed, low cost, wide range, simple operation and high safety.
Description
Technical field
The utility model relates to the specialized equipment that is used for the test of gas electrical insulation properties, belongs to the high-voltage electrical apparatus measurement mechanism.
Background technology
Along with sulfur hexafluoride (SF
6) wait the widespread use of insulating gas in high voltage electric equipment, how to reclaim SF
6How to purify SF
6How to measure SF
6Withstand voltage properties? the key subjects that people press for solution have been become.
Though pure SF
6Gas is nontoxic, but through move in high voltage electric equipment, generate heat, make moist, generation being had hypertoxic fluoride after the reaction such as decomposition, does not reclaim serious harm environment and personal safety.Therefore the power industry rules are defined in high voltage electric equipment installation and the overhaul and forbid used SF
6Gas must reclaim, purify and recycling with the purpose airborne release.
SF
6The main effect of gas in high voltage electric equipment is insulation and extinguish arcs, so must guarantee SF
6Gas has good electrical insulation properties.But, the SF of recovery
6Often sneaked into greasy dirt, impurity in the gas, caused decreasing insulating, must just can reuse through the electric insulating quality energy measurement, otherwise can cause the high voltage electric equipment damage accident.
The best approach of weighing the object electrical insulation properties is to measure its voltage breakdown.Though have at present and measure the high-tension measurement loop that porcelain insulator one class solid body is used, never can carry out the device of gas voltage-withstand test, can not directly measure SF
6The electrical insulation properties of gas.Can only infer indirectly with chemical method.
Summary of the invention
The purpose of this utility model provides a kind of insulation gas voltage endurance testing device, accomplishes directly to measure the electrical insulation properties of tested gas, and fast measuring is easy to use.
Technical scheme is to make circular cylinder body with insulating material, and the cylindrical shell two ends are adhesively fixed with the metal flange dish respectively, with bolt end cap are arranged respectively on the ring flange, is equipped with O type rubber seal between ring flange and the end cap.Be fixed with the high-tension measurement electrode on the upper end cover, be fixed with the screw thread socket on the bottom end cover, the earth terminal high-tension measurement electrode that is carved with scale is spun in the screw shell.Have through hole to communicate with cylindrical shell on the bottom end cover, the through hole outer end is welded with four-way, is connected to gas admittance valve, vacuum pressure ga(u)ge, vacuum valve respectively on other three ports of four-way, and the vacuum valve outlet is communicated with minipump, and automatic heating device also is equipped with on bottom end cover top.
Using method of the present utility model is as follows:
1, at first cylindrical shell is removed and clean up, reinstall and give rotation earth terminal high-tension measurement electrode earlier, adjust two high-tension measurement distance between electrodes.
2, open vacuum valve, open automatic heating device and minipump simultaneously, stop heating after purification a period of time, close vacuum pump and vacuum valve.
3, open gas admittance valve, with the SF in basin or the operational outfit
6Gas charges in the cylindrical shell, observes tensimeter, makes SF
6Gas pressure intensity is consistent with the designing requirement air pressure of the high voltage electric equipment that uses it.
4, two high-tension measurement electrodes are inserted high-potting loop commonly used, the high-tension measurement electrode on upper end cover applies high voltage and increases gradually, till disruptive discharge, records instantaneous discharge voltage, i.e. voltage breakdown.This voltage breakdown can be used as weighs SF
6Gas electrical insulation properties parameter.
Can draw through test of many times: be 2mm in the potential electrode distance, air pressure is under the normal temperature condition of 0.5 ± 0.1MPa, meets the SF of request for utilization
6Gas breakdown voltage is generally all greater than 40KV.Therefore, the suggestion power industry with voltage breakdown 〉=40KV as SF
6Gas electrical insulation properties criterion of acceptability.
Compared with the prior art, the utility model has following characteristics:
1, measuring speed is fast, and measurement data directly reflects SF
6The gas electrical insulation properties.Every sample time Measuring Time was less than 1 hour.
2, the measurement cost is low, and every sample time measurement expense is less than 100 yuan.
3, measurement range is wide, not only can measure SF
6, and can measure the electrical insulation properties that gas is used in all insulation that comprise inert gas.
4, simple to operate, safe in utilization.
Description of drawings
Fig. 1 is an insulation gas voltage endurance testing apparatus structure synoptic diagram
Embodiment
As shown in the figure, proving installation has the circular cylinder body of being made by insulating material 1.Insulating material can be plastics, glass, pottery etc.Cylindrical shell 1 two ends are adhesively fixed with metal flange dish 2 respectively, upper end cover 3, bottom end cover 4 is fixed by bolts to respectively on the cylindrical shell 1, on the lower end ring flange 2, be equipped with O type rubber seal 8 between end cap and the ring flange, be fixed with high-tension measurement electrode 5 on the upper end cover 3, be fixed with screw shell 7 on the bottom end cover 4, the earth terminal high-tension measurement electrode 6 that is carved with scale is spun in the screw shell 7, there is through hole 9 to communicate on the bottom end cover 4 with cylindrical shell 1, through hole 9 outer ends are welded with four-way 13, be connected to gas admittance valve 15 respectively on other three ports of four-way 13, vacuum pressure ga(u)ge 14, vacuum valve 10, vacuum valve 10 outlets are communicated with minipump 11, and automatic heating device 12 also is equipped with on bottom end cover 4 tops.
Claims (1)
1, a kind of insulation gas voltage endurance testing device, it is characterized in that having the circular cylinder body of making by insulating material (1), cylindrical shell (1) two ends are adhesively fixed with metal flange dish (2) respectively, upper end cover (3), bottom end cover (4) is fixed by bolts to respectively on the cylindrical shell (1), on the lower end ring flange (2), be equipped with O type rubber seal (8) between end cap and the ring flange, be fixed with high-tension measurement electrode (5) on the upper end cover (3), be fixed with screw shell (7) on the bottom end cover (4), the earth terminal high-tension measurement electrode (6) that is carved with scale is spun in the screw shell (7), there is through hole (9) to communicate on the bottom end cover (4) with cylindrical shell (1), through hole (9) outer end is welded with four-way (13), be connected to gas admittance valve (15) respectively on other three ports of four-way (13), vacuum pressure ga(u)ge (14), vacuum valve (10), vacuum valve (10) outlet is communicated with minipump (11), and automatic heating device (12) also is equipped with on bottom end cover (4) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520049902 CN2784942Y (en) | 2005-04-26 | 2005-04-26 | Insulating gas dielectric strength tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520049902 CN2784942Y (en) | 2005-04-26 | 2005-04-26 | Insulating gas dielectric strength tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2784942Y true CN2784942Y (en) | 2006-05-31 |
Family
ID=36771913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520049902 Expired - Fee Related CN2784942Y (en) | 2005-04-26 | 2005-04-26 | Insulating gas dielectric strength tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2784942Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436963A (en) * | 2011-09-26 | 2012-05-02 | 安徽省电力公司阜阳供电公司 | Novel vacuum arc-extinguishing chamber detecting support frame |
| CN104595206A (en) * | 2013-10-31 | 2015-05-06 | 普发真空有限公司 | Vacuum pump |
| CN104730486A (en) * | 2015-02-11 | 2015-06-24 | 西安交通大学 | High-temperature and low-voltage aging test device |
| CN109581156A (en) * | 2018-11-12 | 2019-04-05 | 国网天津市电力公司电力科学研究院 | A kind of high-voltage mutual inductor pressure test method for semi-automatically detecting |
-
2005
- 2005-04-26 CN CN 200520049902 patent/CN2784942Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436963A (en) * | 2011-09-26 | 2012-05-02 | 安徽省电力公司阜阳供电公司 | Novel vacuum arc-extinguishing chamber detecting support frame |
| CN104595206A (en) * | 2013-10-31 | 2015-05-06 | 普发真空有限公司 | Vacuum pump |
| CN104730486A (en) * | 2015-02-11 | 2015-06-24 | 西安交通大学 | High-temperature and low-voltage aging test device |
| CN109581156A (en) * | 2018-11-12 | 2019-04-05 | 国网天津市电力公司电力科学研究院 | A kind of high-voltage mutual inductor pressure test method for semi-automatically detecting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060531 |