CN109490934B - X-ray detection platform for vacuum arc-extinguishing chamber - Google Patents
X-ray detection platform for vacuum arc-extinguishing chamber Download PDFInfo
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- CN109490934B CN109490934B CN201811558394.7A CN201811558394A CN109490934B CN 109490934 B CN109490934 B CN 109490934B CN 201811558394 A CN201811558394 A CN 201811558394A CN 109490934 B CN109490934 B CN 109490934B
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- vacuum arc
- screw
- extinguish chamber
- arc extinguish
- connecting screw
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
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- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- X-Ray Techniques (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses an X-ray detection platform for a vacuum arc extinguish chamber, which comprises a bottom plate, wherein four screw holes and a long slotted hole are formed in the bottom plate, each screw hole penetrates through a grounding screw, and the grounding screw is sleeved with a flat pad and is locked in the screw hole through a nut; a connecting screw for connecting the static end of the vacuum arc-extinguishing chamber penetrates through the long slot hole, and a flat pad is sleeved on the connecting screw and a connecting nut is screwed on the connecting screw; the position of the connecting screw in the long slotted hole can be moved by loosening the connecting nut; during detection, the threaded hole at the static end of the vacuum arc extinguish chamber is connected with the connecting screw, and the height of the vacuum arc extinguish chamber can be adjusted by adjusting the length of the connecting screw; the screw rod at the movable end of the vacuum arc extinguish chamber is sleeved with a limit sleeve and is fastened through a nut screwed on the screw rod at the movable end of the vacuum arc extinguish chamber, and a high-voltage lead connecting screw is screwed on the screw rod at the movable end of the vacuum arc extinguish chamber. The invention has simple and reliable structure adjustment and strong economical efficiency of the realization scheme.
Description
Technical Field
The invention relates to the technical field of detection of vacuum arc extinguish chambers of circuit breaker cabinets, in particular to an X-ray detection platform for the vacuum arc extinguish chambers.
Background
The vacuum circuit breaker is applied to the field of power transmission and transformation power grids in a large amount due to the inexplicable advantages of the vacuum circuit breaker, and the vacuum arc-extinguishing chamber serving as a core component of the vacuum circuit breaker is a passive electric vacuum device, and the main factor influencing the reliability of the vacuum circuit breaker is the vacuum degree. The dielectric strength in a vacuum circuit breaker is closely related to the degree of vacuum. Therefore, the vacuum degree of the vacuum arc-extinguishing chamber is an important technical index for ensuring the insulating performance and the arc-extinguishing performance of the vacuum circuit breaker. If the vacuum degree of a vacuum arc extinguish chamber of the circuit breaker in operation is lower than a certain order of magnitude, the circuit can not be normally opened and closed by the vacuum circuit breaker, normal power supply of a power distribution system is affected, and great harm is caused. Meanwhile, with increasing importance on environmental protection, people are gradually concerned about: is the X-ray generated by the vacuum interrupter at high voltage hazardous to personnel? However, no final conclusion is formed so far, and both IEC and DL incorporate X-ray measurement items into new standards as bases for judging the quality of the vacuum circuit breaker and the arc extinguish chamber thereof. According to the requirements of the national standard GB/T11022.11, the vacuum arc-extinguishing chamber must be subjected to X-ray detection to ensure the breaking capacity of the vacuum arc-extinguishing chamber.
According to the requirement of GB/T11022, one end of a vacuum arc-extinguishing chamber is applied with rated power frequency voltage under the condition of certain open distance, the other end of the vacuum arc-extinguishing chamber is grounded, the power frequency withstand voltage of a conventional 12KV circuit breaker cabinet is 42KV, the vacuum arc-extinguishing chamber can bear the voltage in the air generally, and the vacuum arc-extinguishing chamber is convenient to introduce and reliably grounded in the air, but if the voltage grade is improved to 24kV or higher voltage grade of 40.5kV, the problems that how to solve the external insulation problem and how to keep the open distance of the vacuum arc-extinguishing chamber in an insulating medium are necessary to face are solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing an X-ray detection platform for a vacuum arc extinguish chamber, aiming at keeping a certain distance between the vacuum arc extinguish chamber and the insulating medium, and realizing high-voltage introduction and reliable grounding. The vacuum arc extinguish chamber X-ray detection platform can adjust the pulling distance of the vacuum arc extinguish chamber through special tool design, can realize the position adjustment of the vacuum arc extinguish chamber in an insulating medium, and finally realizes the X-ray detection of the vacuum arc extinguish chamber under the detection condition.
The technical problem to be solved by the invention can be realized by the following technical scheme:
an X-ray detection platform of a vacuum arc extinguish chamber comprises a bottom plate, wherein four screw holes and a long slotted hole are formed in the bottom plate, each screw hole penetrates through a grounding screw, and a flat pad is sleeved on the grounding screw and locked in the screw hole through a nut; and a connecting screw for connecting the static end of the vacuum arc-extinguishing chamber penetrates through the long slot hole, and a flat pad is sleeved on the connecting screw and a connecting nut is screwed on the connecting screw. The position of the connecting screw in the long slotted hole can be moved by loosening the connecting nut; during detection, the threaded hole at the static end of the vacuum arc extinguish chamber is connected with the connecting screw, and the height of the vacuum arc extinguish chamber can be adjusted by adjusting the length of the connecting screw. The screw rod at the movable end of the vacuum arc extinguish chamber is sleeved with a limiting sleeve and is fastened through a nut screwed on the screw rod at the movable end of the vacuum arc extinguish chamber, and a high-voltage lead connecting screw is screwed on the screw rod at the movable end of the vacuum arc extinguish chamber.
During detection, the grounding lead is connected to any grounding screw, the high-voltage lead is connected to the high-voltage lead connecting screw, or the vacuum arc-extinguishing chamber X-ray detection platform and the vacuum arc-extinguishing chamber are placed into a measuring cylinder filled with an insulating medium together, and then the vacuum arc-extinguishing chamber X-ray detection can be started.
Due to the adoption of the technical scheme, the X-ray detection device can be applied to the field of detection of the vacuum arc-extinguishing chamber, can effectively solve the X-ray detection of 24kV and above voltage levels, and can quickly and effectively realize detection by multi-dimensional adjustment of the vacuum arc-extinguishing chamber on the detection platform up, down, left and right. The invention has simple and reliable structure adjustment and strong economical efficiency of the realization scheme.
Drawings
Fig. 1 is a schematic perspective view of a vacuum interrupter mounted on an X-ray inspection platform of the vacuum interrupter of the present invention.
Fig. 2 is a schematic front view of a vacuum interrupter mounted on the X-ray inspection platform of the vacuum interrupter of the present invention.
Fig. 3 is a schematic diagram of a state of the vacuum interrupter in a closing position.
Fig. 4 is a schematic view of the vacuum interrupter in the open position.
Fig. 5 is a schematic diagram of X-ray detection of the vacuum interrupter.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described below by combining the specific drawings.
Referring to fig. 1 and 2, the vacuum interrupter X-ray detection platform shown in the figures comprises a bottom plate 5, wherein four screw holes 52 and a slotted hole 51 are formed in the bottom plate 5, each screw hole 52 penetrates through a grounding screw 61, and the grounding screw 61 is sleeved with a flat pad 62 and locked in the screw hole 52 through a nut 63.
A connecting screw 73 for connecting the static end 41 of the vacuum interrupter 4 is inserted through the long slot hole 51, and a flat pad 72 is sleeved on the connecting screw 73 and a connecting nut 71 is screwed on the connecting screw 73. The position of the connection screw 73 in the long slot hole 51 can be moved by loosening the connection nut 71.
During detection, the threaded hole of the static end 41 of the vacuum arc-extinguishing chamber 4 is connected with the connecting screw 73, and the height of the vacuum arc-extinguishing chamber 4 can be adjusted by adjusting the length of the connecting screw 73. A screw 43 at the movable end 42 of the vacuum arc-extinguishing chamber 4 is sleeved with a limit sleeve 3 and is fastened through a nut 2 screwed on the screw 43 at the movable end 42 of the vacuum arc-extinguishing chamber 4, and a high-voltage lead connecting screw 1 is screwed on the screw 43 at the movable end 42 of the vacuum arc-extinguishing chamber 4. The opening distance can be adjusted by adjusting the nut 2. In fig. 4 a and fig. 3B, the difference between the two is the actual distance between the vacuum interrupter 4 and the vacuum interrupter. The minimum opening distances of the vacuum arc-extinguishing chambers 4 with different voltage grades are different, so that the distance between A and B is adjusted, any opening distance can be realized, and the X-ray detection of the arc-extinguishing chambers under different voltage grades is met.
The invention can be realized by adjusting the vacuum arc-extinguishing chamber 4 at a proper test position without adjusting the amount of the insulating medium again through the length of the connecting screw 73 between the vacuum arc-extinguishing chamber 4 and the bottom plate 5, and is also convenient for the adjustment of testers.
The grounding lead C shown in fig. 5 can be fixed to any position of any one grounding screw 61 of the bottom plate 5 by using a conventional wire, so that the static end 41 of the vacuum interrupter 4 is in a grounding position. The high-voltage lead D is led in through the high-voltage lead connecting screw 1 on the movable end 42 of the vacuum arc-extinguishing chamber 4, and power frequency voltage is applied. During detection, the vacuum arc extinguish chamber X-ray detection platform and the vacuum arc extinguish chamber 4 are placed into the measuring cylinder F containing the insulating medium E together, and then the vacuum arc extinguish chamber X-ray detection can be started.
Due to the protection of the insulating medium E, the outer insulation and porcelain shell part of the vacuum arc extinguish chamber 4 can bear power frequency withstand voltage, can bear 95kV power frequency withstand voltage at most, and covers the tests of all voltage levels in the current medium-voltage field. The design of the limiting sleeve 3 can realize the opening distance change of 8mm to 20mm, the minimum opening distance of the vacuum arc-extinguishing chamber with the voltage level of 12kV is 8mm, the minimum opening distance of the vacuum arc-extinguishing chamber with the voltage level of 40.5kV is 16mm, and the X-ray detection of the whole series of vacuum arc-extinguishing chambers can be carried out under the medium voltage. The invention has the advantages of relatively simple structure, easy realization and strong practicability.
The foregoing has described the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited by the foregoing examples, which are provided for purposes of illustration only, and are not intended to limit the scope of the invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The X-ray detection platform for the vacuum arc extinguish chamber is characterized by comprising a bottom plate, wherein four screw holes and a long slotted hole are formed in the bottom plate, each screw hole penetrates through a bolt for grounding, and the bolt for grounding is sleeved with a flat pad and is locked in the screw hole through a nut; a connecting screw for connecting the static end of the vacuum arc-extinguishing chamber penetrates through the long slot hole, and a flat pad is sleeved on the connecting screw and a connecting nut is screwed on the connecting screw; the position of the connecting screw in the long slotted hole can be moved by loosening the connecting nut; during detection, the X-ray detection platform of the vacuum arc extinguish chamber and the vacuum arc extinguish chamber are placed into a measuring cylinder containing insulating media, a threaded hole at the static end of the vacuum arc extinguish chamber is connected with the connecting screw, and the height of the vacuum arc extinguish chamber can be adjusted by adjusting the length of the connecting screw; the screw rod at the movable end of the vacuum arc extinguish chamber is sleeved with a limiting sleeve and is fastened through a nut screwed on the screw rod at the movable end of the vacuum arc extinguish chamber, and a high-voltage lead connecting screw is screwed on the screw rod at the movable end of the vacuum arc extinguish chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558394.7A CN109490934B (en) | 2018-12-19 | 2018-12-19 | X-ray detection platform for vacuum arc-extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558394.7A CN109490934B (en) | 2018-12-19 | 2018-12-19 | X-ray detection platform for vacuum arc-extinguishing chamber |
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| Publication Number | Publication Date |
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| CN109490934A CN109490934A (en) | 2019-03-19 |
| CN109490934B true CN109490934B (en) | 2022-11-25 |
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| CN201811558394.7A Active CN109490934B (en) | 2018-12-19 | 2018-12-19 | X-ray detection platform for vacuum arc-extinguishing chamber |
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Citations (18)
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|---|---|---|---|---|
| FR1398091A (en) * | 1964-03-26 | 1965-05-07 | Radiologie Cie Gle | Improvements to chi fluorescence assay devices |
| GB1423407A (en) * | 1972-04-28 | 1976-02-04 | Westinghouse Electric Corp | High voltage vacuum interrupter with an x-ray absorbing outer shield |
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| CN205484588U (en) * | 2016-01-13 | 2016-08-17 | 厦门理工学院 | Automatic test equipment of cubical switchboard |
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2018
- 2018-12-19 CN CN201811558394.7A patent/CN109490934B/en active Active
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| FR1398091A (en) * | 1964-03-26 | 1965-05-07 | Radiologie Cie Gle | Improvements to chi fluorescence assay devices |
| GB1423407A (en) * | 1972-04-28 | 1976-02-04 | Westinghouse Electric Corp | High voltage vacuum interrupter with an x-ray absorbing outer shield |
| FR2299713A1 (en) * | 1975-01-30 | 1976-08-27 | Gen Electric | METHOD OF DETECTION OF A LOSS OF |
| JPH04132131A (en) * | 1990-09-21 | 1992-05-06 | Hitachi Ltd | Vacuum pressure measuring device for vacuum circuit breaker vacuum bulb |
| US5286933A (en) * | 1991-11-22 | 1994-02-15 | Gec Alsthom Sa | Vacuum circuit-breaker equipped with self-diagnosis means |
| CN2213343Y (en) * | 1994-12-08 | 1995-11-22 | 郭秋丰 | Distribution equipment and electric energy calculating safety monitor |
| JPH08320379A (en) * | 1995-05-25 | 1996-12-03 | Japan Atom Energy Res Inst | Method and apparatus for measuring dose |
| CA2298789A1 (en) * | 1997-08-14 | 1999-02-25 | Hendry Mechanical Works | Electric arc monitoring systems |
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| CN101493502A (en) * | 2008-12-16 | 2009-07-29 | 天津市百利电气有限公司 | Plastic case breaker over-travel test tool and using method |
| CN102822639A (en) * | 2010-01-25 | 2012-12-12 | 吉尼瓦洁净技术公司 | Automatic detection of appliances |
| CN105137307A (en) * | 2015-09-18 | 2015-12-09 | 扬州市双宝电力设备有限公司 | Automatic tester for dielectric strength of insulating oil |
| CN105405707A (en) * | 2015-12-03 | 2016-03-16 | 上海天灵开关厂有限公司 | Gas-insulated load switch and arc extinguishing device thereof |
| CN105467311A (en) * | 2015-12-29 | 2016-04-06 | 天津平高智能电气有限公司 | Flexible connection testing tool |
| CN205484588U (en) * | 2016-01-13 | 2016-08-17 | 厦门理工学院 | Automatic test equipment of cubical switchboard |
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| CN109490934A (en) | 2019-03-19 |
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