CN101271031A - Tester for vacuum degree of vacuum switch - Google Patents
Tester for vacuum degree of vacuum switch Download PDFInfo
- Publication number
- CN101271031A CN101271031A CNA2008100507082A CN200810050708A CN101271031A CN 101271031 A CN101271031 A CN 101271031A CN A2008100507082 A CNA2008100507082 A CN A2008100507082A CN 200810050708 A CN200810050708 A CN 200810050708A CN 101271031 A CN101271031 A CN 101271031A
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- vacuum
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- switch
- pond
- vacuum switch
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Abstract
A vacuum switch vacuum degree calibration instrument includes a vacuum switch, an ionexclusion chromatography gauge pipe, a vacuum calibration pool, a molecular pump, a mechanical pump, an ion pump and a nitrogen gas bottle; the vacuum switch is respectively connected with the ionexclusion chromatography gauge pipe and the vacuum calibration pool by three-way interfaces; the vacuum calibration pool is connected with the molecular pump by a pipe and an extraction valve; the molecular pump is connected with the mechanical pump; the vacuum calibration pool is connected with the ion pump by a pipe and another extraction valve; the vacuum calibration pool is also connected with the nitrogen gas bottle by a pipe and an inlet valve. The vacuum switch vacuum degree calibration instrument has the advantages of wide scope of application, compact structure, simple operation process and applicability in calibrating all instruments which measure the vacuum degree of the vacuum switches; the highest vacuum degree which can be calibrated by the device is 10-7Pa, and the precision is high.
Description
Technical field
The present invention relates to the vacuum tightness calibration equipment, in particular a kind of tester for vacuum degree of vacuum switch.
Background technology
Vacuum switch is that the extremely promising electric power in pressure field cut-offs device in low pressure reaches, and it is to be the device for switching of insulation and blow-out medium with the vacuum.Gas molecule is very rare in the vacuum, and the chance that electron and molecule collides is few, so the dielectric strength of vacuum switch is very high.Vacuum switch is compared with other type isolating switch, has advantages such as safe and reliable, that the life-span is long, maintenance load is little, environment is not contaminated.For disjunction and the arc extinguishing of realizing electric current, the indoor pressure of the vacuum extinction of vacuum switch generally is not higher than 10
-2Pa.Therefore, vacuum tightness is one of the principal element of the break performance of decision vacuum switch, and the reduction of vacuum tightness will directly influence the connecting-disconnecting function of vacuum switch, will cause it to cut-off complete failure when serious.In the practical application, the method for testing of vacuum level of vacuum arc-quenching chamber mainly contains: industrial frequency withstand voltage method, magnetic charging method, high-frequency current cut-off electric discharge, high frequency prebreakdown current method, coupling capacitance method, electro-optical conversion method etc.Above-described method all is to utilize electric principle to measure the vacuum tightness of vacuum switch, must there be certain error in the instrument of making according to these principles when measurement of vacuum, so need carry out verification from physical method, judge whether the vacuum tightness of these surveying instruments measurement gained is controlled within the scope of error permission.
Through further retrieval to prior art, find that the patent No. is 96219300.3, name is called precision pressure vacuum tester.The purpose of this patent is to provide a kind of compact conformation, and is easy to operate, and it is little to detect error, again the precision pressure vacuum tester of while detected pressures table, vacuum meter.Find that again application number is 91220227.0, name is called portable multi-functional pressure table vacuum meter checker.This patent is the checker that checker comes calibration operation tensimeter, pressure vacuum degree and vacuum meter to use with precision pressure gauge, accurate vacuum meter, it both can be with liquid as actuating medium, again can be with air as actuating medium, make checker appraise and decide scope and can reach-0.1 ~ 60MPa, meet the requirement of JJ052-87 national metrological verification regulations.Above-mentioned prior art all is that vacuum meter is carried out verification, does not all relate to the verification to the vacuum degree of vacuum switch surveying instrument.
Summary of the invention
Technical matters to be solved by this invention aims to provide a kind of device that carries out verification at the instrument of measuring vacuum degree of vacuum switch specially, this device can be quantitative the error of judgement surveying instrument, precision height, compact conformation, operating process is simple, has wide range of applications.
For solving the problems of the technologies described above, the invention provides a kind of tester for vacuum degree of vacuum switch, it is characterized in that: comprise that vacuum switch, ion are regulated, vacuum is demarcated pond, molecular pump, mechanical pump, ionic pump and nitrogen gas cylinder, vacuum switch connects ion respectively by three-way interface and regulates and vacuum demarcation pond, vacuum is demarcated the pond and is connected molecular pump by pipeline with extraction valve, molecular pump connects mechanical pump, vacuum is demarcated the pond and is connected ionic pump by pipeline with another extraction valve again, and vacuum is demarcated the pond and also is connected the nitrogen gas cylinder with gas admittance valve by pipeline.
Applied range of the present invention, compact conformation, operating process is simple, is applicable to the various instruments that vacuum switch is carried out vacuum measurement of verification, and the maximum vacuum of utilizing this device to demarcate is 10
-7Pa, the precision height.
Description of drawings
Accompanying drawing is a structure principle chart of the present invention.
Embodiment
With reference to accompanying drawing, the present invention includes that vacuum switch 5, ion regulate 7, vacuum is demarcated pond 8, molecular pump 11, mechanical pump 12, ionic pump 14 and nitrogen gas cylinder 16, vacuum switch 5 by three-way interface 6 connect respectively ion regulate 7 and vacuum demarcate pond 8, vacuum is demarcated pond 8 and is connected molecular pump 11 by pipeline 9 with extraction valve 10, molecular pump 11 connects mechanical pump 12, vacuum is demarcated pond 8 and is connected ionic pump 14 by pipeline 9 with another extraction valve 13 again, and vacuum is demarcated pond 8 and also is connected nitrogen gas cylinder 16 by pipeline 9 with gas admittance valve 15.
During use, vacuum switch vacuum degree tester to be verified 1 is connected on the vacuum switch 5 by high-voltage output line 2 and slotted line 4, the field coil 3 of vacuum switch vacuum degree tester to be verified be added in vacuum switch 5 around.Open extraction valve 10, opening 12 pairs of vacuum demarcation of molecular pump 11 and mechanical pump pond 8 vacuumizes continuously, regulating 7 vacuum tightnesss that show when ion changes hour, close extraction valve 10, open extraction valve 13, opening 14 pairs of vacuum demarcation of ionic pump pond 8 vacuumizes continuously, when ion is regulated 7 vacuum tightnesss that show when meeting the requirements of near the vacuum tightness, open gas admittance valve 15, nitrogen in the nitrogen gas cylinder 16 is fed vacuum to be demarcated in the pond 8, regulate gas admittance valve 15, air inflow and rate of air sucked in required are balanced each other, the vacustat in the vacuum demarcation pond 8 is under the vacuum tightness that requires.Ion is regulated the vacuum tightness that 7 vacuum tightnesss that show are this moment.Open vacuum tightness switch vacuum degree measuring instrument to be calibrated, read the vacuum tightness that records.By comparing the error that vacuum tightness gets final product verification vacuum degree measuring instrument to be measured.
The present invention can carry out verification to the instrument of various measurement vacuum degree of vacuum switch, judges the measuring error of instrument.Can be widely used in vacuum degree of vacuum switch measuring instrument manufacturer and carry out verification, also can be widely used in Scientific Research in University Laboratory and institute, the electrical specification of vacuum switch and the relation of vacuum tightness are carried out correlative study.
Claims (1)
1, a kind of tester for vacuum degree of vacuum switch, it is characterized in that: comprise that vacuum switch, ion are regulated, vacuum is demarcated pond, molecular pump, mechanical pump, ionic pump and nitrogen gas cylinder, vacuum switch connects ion respectively by three-way interface and regulates and vacuum demarcation pond, vacuum is demarcated the pond and is connected molecular pump by pipeline with extraction valve, molecular pump connects mechanical pump, vacuum is demarcated the pond and is connected ionic pump by pipeline with another extraction valve again, and vacuum is demarcated the pond and also is connected the nitrogen gas cylinder with gas admittance valve by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100507082A CN101271031A (en) | 2008-05-14 | 2008-05-14 | Tester for vacuum degree of vacuum switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100507082A CN101271031A (en) | 2008-05-14 | 2008-05-14 | Tester for vacuum degree of vacuum switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101271031A true CN101271031A (en) | 2008-09-24 |
Family
ID=40005133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100507082A Pending CN101271031A (en) | 2008-05-14 | 2008-05-14 | Tester for vacuum degree of vacuum switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101271031A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156023A (en) * | 2011-03-14 | 2011-08-17 | 房刚 | Method for calibrating high pressure equipment |
| CN104299737A (en) * | 2014-09-29 | 2015-01-21 | 兰州空间技术物理研究所 | Method for improving stability of resistance value of thermistor in vacuum environment |
| CN105221401A (en) * | 2015-09-28 | 2016-01-06 | 南京三乐电子信息产业集团有限公司 | The pumping speed device of travelling wave valve Miniature sputtering ion pump and pumping speed test method thereof |
-
2008
- 2008-05-14 CN CNA2008100507082A patent/CN101271031A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156023A (en) * | 2011-03-14 | 2011-08-17 | 房刚 | Method for calibrating high pressure equipment |
| CN104299737A (en) * | 2014-09-29 | 2015-01-21 | 兰州空间技术物理研究所 | Method for improving stability of resistance value of thermistor in vacuum environment |
| CN105221401A (en) * | 2015-09-28 | 2016-01-06 | 南京三乐电子信息产业集团有限公司 | The pumping speed device of travelling wave valve Miniature sputtering ion pump and pumping speed test method thereof |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080924 |