CN104089978A - Built-in detection system for sulfur hexafluoride gas humidity - Google Patents
Built-in detection system for sulfur hexafluoride gas humidity Download PDFInfo
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- CN104089978A CN104089978A CN201410335159.9A CN201410335159A CN104089978A CN 104089978 A CN104089978 A CN 104089978A CN 201410335159 A CN201410335159 A CN 201410335159A CN 104089978 A CN104089978 A CN 104089978A
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- sulfur hexafluoride
- tank body
- humidity
- sensor
- built
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- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 38
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 38
- 238000001514 detection method Methods 0.000 title abstract description 5
- 230000008878 coupling Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
本发明提供一种六氟化硫气体湿度的内置式检测系统，其特征在于：包括罐体、镜面式六氟化硫湿度密度传感器、电机、磁性联轴器和设置在罐体内的风扇，其中罐体上设有安全阀、压力表、真空计、进气口、出气口和用于安装待检测六氟化硫湿度传感器的转接头，镜面式六氟化硫湿度密度传感器安装在罐体内壁上，出气口经阀门接露点仪，磁性联轴器嵌装在罐体上，磁性联轴器的外转子与电机的输出轴连接，内转子与风扇固定连接。本发明的镜面式内置六氟化硫传感器采用冷镜原理，当镜面温度足够低时，气体中的水分在镜面上冷凝成露，直接测定气体中的水分在镜面上冷凝成露的温度，此时的温度即为露点，不受容器内压力的影响，因此测定更加准确，重现性好。
The invention provides a built-in detection system for the humidity of sulfur hexafluoride gas, which is characterized in that it includes a tank body, a mirror-surface sulfur hexafluoride humidity density sensor, a motor, a magnetic coupling and a fan arranged in the tank body, wherein The tank body is equipped with a safety valve, pressure gauge, vacuum gauge, air inlet, air outlet and an adapter for installing the sulfur hexafluoride humidity sensor to be detected. The mirror surface sulfur hexafluoride humidity density sensor is installed on the inner wall of the tank On the top, the air outlet is connected to the dew point meter through the valve, and the magnetic coupling is embedded on the tank body. The outer rotor of the magnetic coupling is connected to the output shaft of the motor, and the inner rotor is fixedly connected to the fan. The mirror-type built-in sulfur hexafluoride sensor of the present invention adopts the cold mirror principle. When the mirror surface temperature is low enough, the moisture in the gas condenses into dew on the mirror surface, and directly measures the temperature at which the moisture in the gas condenses into dew on the mirror surface. The temperature at that time is the dew point, which is not affected by the pressure in the container, so the measurement is more accurate and reproducible.
Description
Technical field
The invention provides a kind of built in test system of sulfur hexafluoride gas humidity, belong to sulfur hexafluoride gas Humidity Detection instrument technology.
Background technology
SF
6gas, owing to having good insulation characterisitic and arc quenching characteristic, is used widely in high voltage electric equipment.Due to SF
6gas is manufactured the factors such as link, electrical equipment manufacture and installation process, equipment leakage, adsorbent, causes SF
6in gas, moisture increases, thereby insulant inside surface generation arcing fault probability is increased; Isolating switch, owing to making moist or producing condensation, makes its decreasing insulating; SF
6in gas, moisture can participate in SF
6the decomposition reaction of gas, generates the extremely strong decomposition product of corrosivity, and then the interior metal original paper of corrosion electrical equipment and sealed insulating material, shortens the serviceable life of electrical equipment.
Along with the development of domestic intelligent grid, in a large amount of electrical equipments, SF is installed at present
6gas humidity device for detecting density, this type of monitoring device major part is the monitoring device of external, measuring accuracy is relatively low, and the impact that is vulnerable to pressure causes measurement accuracy to reduce.
Summary of the invention
The object of this invention is to provide that a kind of measuring accuracy is high, the built in test system of a kind of sulfur hexafluoride gas humidity of excellent working performance.Its technical scheme is:
A kind of built in test system of sulfur hexafluoride gas humidity, it is characterized in that: comprise tank body, mirror surface type sulfur hexafluoride humidity and compactibility sensor, motor, magnetic shaft coupling and be arranged on the fan in tank body, wherein tank body is provided with safety valve, tensimeter, vacuum meter, air intake opening, gas outlet and for the adapter of sulfur hexafluoride humidity sensor to be detected is installed, mirror surface type sulfur hexafluoride humidity and compactibility installation of sensors is in inner tank wall, gas outlet connects dew point hygrometer through valve, magnetic shaft coupling is inlaid on tank body, the outer rotor of magnetic shaft coupling is connected with the output shaft of motor, internal rotor is fixedly connected with fan.
The built in test system of described a kind of sulfur hexafluoride gas humidity, the interface that sulfur hexafluoride humidity sensor to be detected is installed is 2-4.
The built in test system of described a kind of sulfur hexafluoride gas humidity, the link of adapter and tank body is provided with external thread, both are threaded through sealing gasket, and the link of adapter and sulfur hexafluoride humidity sensor to be detected is provided with internal thread, and both are threaded by sealed tube.
Its principle of work is: first sulfur hexafluoride humidity sensor to be detected is installed on tank body through adapter.When detection, first by the nitrogen that is filled with certain humidity in tank body to set pressure, unlatching electric motor fan rotates, make nitrogen humidity equilibrium in tank body, humidity and the density of reading nitrogen in tank body by mirror surface type sulfur hexafluoride humidity and compactibility sensor, then analyze the output valve of sulfur hexafluoride humidity sensor to be detected, and contrast with the humidity of reading and density, to judge the accuracy of sulfur hexafluoride humidity sensor to be detected.
Compared with prior art, its advantage is in the present invention:
1, the present invention has higher accuracy in detection.Existing external sensor, in the time measuring in container high humility gas, need be decreased to gas in container pressure under normal pressure and measure, and the gas of larger humidity has moisture and separates out in decompression process, causes measuring inaccurate; And the built-in sulfur hexafluoride sensor of mirror surface type is to adopt Cold Mirrors principle, in the time that mirror temperature is enough low, the moisture in gas is condensed into dew on minute surface, temperature is now dew point, get final product direct mensurated gas composition dew point value, and the not impact of receptor internal pressure, it is more accurate therefore to measure.
2, the built-in sulfur hexafluoride sensor of mirror surface type has better measurement reappearance and stability.Existing resistance-capacitance type sensor is based on Al
2o
3, the resistance capacitance that occurs in the medium such as silicon semiconductor and gas contact process quantitatively changes, and measures, there is performance degradation in this type of medium, cause measuring repeated variation after long-term use; And the built-in sulfur hexafluoride sensor of mirror surface type adopts Cold Mirrors principle, directly the moisture in mensurated gas composition is condensed into the temperature of dew on minute surface, and temperature is now dew point, and this method is measured has the features such as accuracy is high, favorable reproducibility.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
In figure: 1, tank body 2, mirror surface type sulfur hexafluoride humidity and compactibility sensor 3, motor 4, magnetic shaft coupling 5, fan 6, safety valve 7, tensimeter 8, vacuum meter 9, air intake opening 10, gas outlet 11, adapter 12, valve 13, dew point hygrometer 14, O-ring seal 15, sealing gasket
Embodiment
In the embodiment shown in fig. 1: comprise tank body 1, mirror surface type sulfur hexafluoride humidity and compactibility sensor 2, motor 3, magnetic shaft coupling 4 and be arranged on the fan 5 in tank body 1, wherein tank body 1 is provided with safety valve 6, tensimeter 7, vacuum meter 8, air intake opening 9, 10 and 4 of gas outlets are for installing the adapter 11 of sulfur hexafluoride humidity sensor to be detected, mirror surface type sulfur hexafluoride humidity and compactibility sensor 2 is arranged on tank body 1 inwall, gas outlet 10 connects dew point hygrometer 13 through valve 12, magnetic shaft coupling 4 is inlaid on tank body 1, the outer rotor of magnetic shaft coupling 4 is connected with the output shaft of motor 3, internal rotor is fixedly connected with fan 5.Adapter 11 is provided with external thread with the link of tank body 1, and both are threaded through sealing gasket 15, and adapter 11 is provided with internal thread with the link of sulfur hexafluoride humidity sensor to be detected, and both are threaded by sealed tube.
Claims (3)
1. the built in test system of a sulfur hexafluoride gas humidity, it is characterized in that: comprise tank body (1), mirror surface type sulfur hexafluoride humidity and compactibility sensor (2), motor (3), magnetic shaft coupling (4) and be arranged on the fan (5) in tank body (1), wherein tank body (1) is provided with safety valve (6), tensimeter (7), vacuum meter (8), air intake opening (9), gas outlet (10) and for the adapter (11) of sulfur hexafluoride humidity sensor to be detected is installed, mirror surface type sulfur hexafluoride humidity and compactibility sensor (2) is arranged on tank body (1) inwall, gas outlet (10) connects dew point hygrometer (13) through valve (12), magnetic shaft coupling (4) is inlaid on tank body (1), the outer rotor of magnetic shaft coupling (4) is connected with the output shaft of motor (3), internal rotor is fixedly connected with fan (5).
2. the built in test system of a kind of sulfur hexafluoride gas humidity according to claim 1, is characterized in that: the adapter (11) that sulfur hexafluoride humidity sensor to be detected is installed is 2-4.
3. the built in test system of a kind of sulfur hexafluoride gas humidity according to claim 1, it is characterized in that: adapter (11) is provided with external thread with the link of tank body (1), both are threaded through sealing gasket (15), adapter (11) is provided with internal thread with the link of sulfur hexafluoride humidity sensor to be detected, and both are threaded by sealed tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335159.9A CN104089978A (en) | 2014-07-15 | 2014-07-15 | Built-in detection system for sulfur hexafluoride gas humidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335159.9A CN104089978A (en) | 2014-07-15 | 2014-07-15 | Built-in detection system for sulfur hexafluoride gas humidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104089978A true CN104089978A (en) | 2014-10-08 |
Family
ID=51637713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410335159.9A Pending CN104089978A (en) | 2014-07-15 | 2014-07-15 | Built-in detection system for sulfur hexafluoride gas humidity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104089978A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407101A (en) * | 2014-10-31 | 2015-03-11 | 中国工程物理研究院总体工程研究所 | Shutdown-free humidity monitoring device of toxic gas container |
| CN106093118A (en) * | 2016-06-01 | 2016-11-09 | 中国电力科学研究院 | The portable set of a kind of moisture in detected gas and method |
| CN113030384A (en) * | 2021-02-26 | 2021-06-25 | 国网河北省电力有限公司衡水供电分公司 | Sulfur hexafluoride gas full-life state online monitoring system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109593A (en) * | 1994-03-31 | 1995-10-04 | 万春 | Computerized photoelectric mirror surface condensing dew point instrument |
| WO2003048719A2 (en) * | 2001-11-30 | 2003-06-12 | Siemens Aktiengesellschaft | Device for detecting oil penetration into the measuring chamber of a gas sensor connected to a transformer chamber by means of a membrane, and heating device for transformer oil |
| CN102095753A (en) * | 2009-12-10 | 2011-06-15 | 上海莫克电子技术有限公司 | Precision cold mirror dew point meter |
| CN204008529U (en) * | 2014-07-15 | 2014-12-10 | 国家电网公司 | A kind of built in test system of sulfur hexafluoride gas humidity |
-
2014
- 2014-07-15 CN CN201410335159.9A patent/CN104089978A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109593A (en) * | 1994-03-31 | 1995-10-04 | 万春 | Computerized photoelectric mirror surface condensing dew point instrument |
| WO2003048719A2 (en) * | 2001-11-30 | 2003-06-12 | Siemens Aktiengesellschaft | Device for detecting oil penetration into the measuring chamber of a gas sensor connected to a transformer chamber by means of a membrane, and heating device for transformer oil |
| CN102095753A (en) * | 2009-12-10 | 2011-06-15 | 上海莫克电子技术有限公司 | Precision cold mirror dew point meter |
| CN204008529U (en) * | 2014-07-15 | 2014-12-10 | 国家电网公司 | A kind of built in test system of sulfur hexafluoride gas humidity |
Non-Patent Citations (1)
| Title |
|---|
| 郭伟等: ""现场检测SF6气体湿度准确性的分析"", 《华东电力》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407101A (en) * | 2014-10-31 | 2015-03-11 | 中国工程物理研究院总体工程研究所 | Shutdown-free humidity monitoring device of toxic gas container |
| CN106093118A (en) * | 2016-06-01 | 2016-11-09 | 中国电力科学研究院 | The portable set of a kind of moisture in detected gas and method |
| CN113030384A (en) * | 2021-02-26 | 2021-06-25 | 国网河北省电力有限公司衡水供电分公司 | Sulfur hexafluoride gas full-life state online monitoring system and method |
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Application publication date: 20141008 |
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