CN204008515U - Electrical equipment mix insulation gas concentration detection system - Google Patents
Electrical equipment mix insulation gas concentration detection system Download PDFInfo
- Publication number
- CN204008515U CN204008515U CN201420465685.2U CN201420465685U CN204008515U CN 204008515 U CN204008515 U CN 204008515U CN 201420465685 U CN201420465685 U CN 201420465685U CN 204008515 U CN204008515 U CN 204008515U
- Authority
- CN
- China
- Prior art keywords
- gas
- electrical equipment
- mix insulation
- thermal conductivity
- gas concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009413 insulation Methods 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000010168 coupling process Methods 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 description 26
- 229910018503 SF6 Inorganic materials 0.000 description 6
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 6
- 229960000909 sulfur hexafluoride Drugs 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000003822 preparative gas chromatography Methods 0.000 description 1
- 238000012113 quantitative test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a kind of electrical equipment mix insulation gas concentration detection system, it is characterized in that: comprise the electrical equipment that fills mix insulation gas, needle valve, rapid-acting coupling, gas purifier, heating element, micrometeor thermal conductivity sensor, mass flowmeter and gas concentration unit, wherein heating element and micrometeor thermal conductivity sensor are arranged in sensing chamber, mix insulation gas from the output terminal of electrical equipment successively through needle valve, rapid-acting coupling, clarifier, sensing chamber with heating element and micrometeor thermal conductivity sensor enters mass flowmeter, the output termination gas concentration unit of mass flowmeter.The utility model utilization trace thermal conductivity sensor carries out each gas concentration in mix insulation gas and detects, and can detect minipool gas, prevents a large amount of mixed gass discharges, cause atmospheric pollution, and accuracy of detection is high, and structure is small and exquisite, is easy to portable.
Description
Technical field
The utility model relates to a kind of electrical equipment mix insulation gas concentration detection system, belongs to electrical equipment detection technique field.
Background technology
Because sulfur hexafluoride electrical equipment is generally equipment with pressure, under subzero 40 DEG C of cryogenic conditions, sulfur hexafluoride electrical equipment can be because SF
6γ-ray emission liquefaction makes pressure decreased.In the time that pressure decreased arrives locking force value, sulfur hexafluoride electrical equipment cannot move, and even can cause large-area power failure when serious.For solving SF in cold district sulfur hexafluoride electrical equipment
6the problem of low-temperature gas liquefaction, general consideration replaces pure SF with mix insulation gas
6gas.Replace pure SF with mix insulation gas
6the prerequisite of gas is that mix insulation gas does not liquefy, and insulating property meet the demands, and has good arc extinction performance while being applied to arc extinguishing equipment, meets the operation needs of electrical equipment.Northern China cold district adopts SF more at present
6/ CF
4the pure SF of mix insulation gas instead
6gas, corresponding SF
6/ CF
4the CF adopting in mix insulation gas
4gas usage is also larger.
At present domestic and international SF
6the purity analysis method of gas has purity to send out and vapor-phase chromatography.Purity is sent out and only can be detected SF
6gas composition, and can not effectively distinguish SF
6and CF
4gas composition; Gc analysis SF
6the purity of gas is mainly for SF
6content is higher, CF
4content is micro-gas composition, adopts normalization method to carry out quantitative test.Research shows because component concentration differs greatly, for SF
6the gas chromatograph of gas and purity instrument can not meet the component concentration testing requirement of mix insulation gas.Also do not grasp at present the basic condition of the component concentration of mix insulation gas in China's low temp area electrical equipment, be difficult to carry out the ventilating control of ratio of gas mixture and the correlative study of equipment running status, therefore need each component concentration detection technique of research mix insulation gas badly.
Utility model content
The purpose of this utility model is to provide that a kind of reasonable in design, compact conformation, volume are little, lightweight, accuracy of detection and the high electrical equipment mix insulation gas concentration detection system of automaticity.Its technical scheme is:
A kind of electrical equipment mix insulation gas concentration detection system, it is characterized in that: comprise the electrical equipment that fills mix insulation gas, needle valve, rapid-acting coupling, gas purifier, heating element, micrometeor thermal conductivity sensor, mass flowmeter and gas concentration unit, wherein heating element and micrometeor thermal conductivity sensor are arranged in sensing chamber, mix insulation gas from the output terminal of electrical equipment successively through needle valve, rapid-acting coupling, clarifier, sensing chamber with heating element and micrometeor thermal conductivity sensor enters mass flowmeter, the output termination gas concentration unit of mass flowmeter.
Described electrical equipment mix insulation gas concentration detection system, micrometeor thermal conductivity sensor adopts MEMS structure.
Its principle of work is: mix insulation gas by rapid-acting coupling from the electrical equipment needle valve of flowing through, regulate needle valve to ensure that micro-mix insulation gas enters detection system, mix insulation gas carries out thermostatic control by system heating element, carry out the detection of component gas concentration by micro-thermal conductivity sensor, and contrast with the pure SF6 gas concentration of previous detection detected value the concentration that draws component gas in SF6/CF4 mix insulation gas.Gas after detection carries out detection of gas flow rate by mass flowmeter, finally enters gas concentration unit.
The utility model compared with prior art, has advantages of following aspect:
1, utilize micro-thermal conductivity sensor to carry out mix insulation gas as SF
6+ CF
4, SF
6+ N
2, SF
6the each minipool gas of+air detects, and prevents a large amount of mixed gass discharges, causes atmospheric pollution.
2, ensureing that under steady temperature and constant rate, thermal conductivity sensor accuracy of detection is high.
3, thermal conductivity sensor adopts MEMS structure, has ensured that whole system structure is small and exquisite, compact, is easy to portable.
4, can carry out concentration detection to the mix insulation gas in electrical equipment under subzero 40 DEG C of cryogenic conditions.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment.
In figure: 1, electrical equipment 2, needle valve 3, rapid-acting coupling 4, clarifier 5, heating element 6, micrometeor thermal conductivity sensor 7, sensing chamber 8, mass flowmeter 9, gas concentration unit
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is further described.In the embodiment shown in fig. 1: micrometeor thermal conductivity sensor 6 adopts MEMS structure, heating element 5 and micrometeor thermal conductivity sensor 6 are arranged in sensing chamber 7, mix insulation gas from the output terminal of electrical equipment 1 successively through needle valve 2, rapid-acting coupling 3, clarifier 4, enter mass flowmeter 8 with the sensing chamber 7 of heating element 5 and micrometeor thermal conductivity sensor 6, the output termination gas concentration unit 9 of mass flowmeter 8.
Claims (2)
1. an electrical equipment mix insulation gas concentration detection system, it is characterized in that: comprise the electrical equipment (1) that fills mix insulation gas, needle valve (2), rapid-acting coupling (3), gas purifier (4), heating element (5), micrometeor thermal conductivity sensor (6), mass flowmeter (8) and gas concentration unit (9), wherein heating element (5) and micrometeor thermal conductivity sensor (6) are arranged in sensing chamber (7), mix insulation gas from the output terminal of electrical equipment (1) successively through needle valve (2), rapid-acting coupling (3), clarifier (4), sensing chamber (7) with heating element (5) and micrometeor thermal conductivity sensor (6) enters mass flowmeter (8), the output termination gas concentration unit (9) of mass flowmeter (8).
2. electrical equipment mix insulation gas concentration detection system according to claim 1, is characterized in that: micrometeor thermal conductivity sensor (6) adopts MEMS structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420465685.2U CN204008515U (en) | 2014-08-18 | 2014-08-18 | Electrical equipment mix insulation gas concentration detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420465685.2U CN204008515U (en) | 2014-08-18 | 2014-08-18 | Electrical equipment mix insulation gas concentration detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204008515U true CN204008515U (en) | 2014-12-10 |
Family
ID=52048495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420465685.2U Active CN204008515U (en) | 2014-08-18 | 2014-08-18 | Electrical equipment mix insulation gas concentration detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204008515U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132956A (en) * | 2014-08-18 | 2014-11-05 | 国家电网公司 | Detection system for concentration of mixed insulating gas of electric equipment |
| CN114321703A (en) * | 2021-10-12 | 2022-04-12 | 广东电网有限责任公司电力科学研究院 | Online air supplement unit of insulating mist for environment-friendly gas-insulated transformer |
-
2014
- 2014-08-18 CN CN201420465685.2U patent/CN204008515U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132956A (en) * | 2014-08-18 | 2014-11-05 | 国家电网公司 | Detection system for concentration of mixed insulating gas of electric equipment |
| CN114321703A (en) * | 2021-10-12 | 2022-04-12 | 广东电网有限责任公司电力科学研究院 | Online air supplement unit of insulating mist for environment-friendly gas-insulated transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |