CN107807209B - Micro-water density monitoring device for gas - Google Patents
Micro-water density monitoring device for gas Download PDFInfo
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- CN107807209B CN107807209B CN201711156177.0A CN201711156177A CN107807209B CN 107807209 B CN107807209 B CN 107807209B CN 201711156177 A CN201711156177 A CN 201711156177A CN 107807209 B CN107807209 B CN 107807209B
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- sampler
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- vacuum pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000012806 monitoring device Methods 0.000 title claims abstract description 13
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 238000005070 sampling Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Gas-Insulated Switchgears (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The embodiment of the application discloses a micro water density monitoring device for gas, which comprises: the device comprises a first sampler, a second sampler, a first vacuum pump, a second vacuum pump, a pipeline and a micro water density sensor; the first connecting flange of the first sampler is connected with one port of the air chamber of the high-pressure gas insulation switch device; the first connecting flange of the second sampler is connected with the other port of the air chamber of the high-pressure gas insulation switch device; one end of the pipeline is connected with the second connecting flange of the first sampler, and the other end of the pipeline is connected with the second connecting flange of the second sampler; the first vacuum pump is arranged in a second connecting flange of the first sampler, and the second vacuum pump is arranged in a second connecting flange of the second sampler; wherein the first vacuum pump and the second vacuum pump are installed in opposite directions; the micro water density sensor is used for acquiring micro water density information of gas in the sampler in real time.
Description
Technical Field
The application relates to the technical field of micro water tightness of gas, in particular to a micro water tightness monitoring device of gas.
Background
SF 6 gas has excellent insulating property and arc extinguishing property, is widely applied to high-pressure Gas Insulated Switchgear (GIS) at the present stage, and is an ideal insulating and arc extinguishing medium under normal working conditions. The working pressure and the micro water content of the device have direct influence on the safe and reliable operation of the device, and if the SF 6 gas leaks to cause density reduction or the micro water content in the gas exceeds the standard, the high-voltage electric device has potential safety hazards and even causes accidents. Therefore, monitoring the density and micro water content of SF 6 gas in GIS has important effect on reducing accident and personal hazard.
Because GIS is the totally enclosed combined electrical apparatus, need use the sampler to monitor SF 6 gas in its inside, sampler cavity is linked together with GIS cavity, SF 6 micro-water density information can reflect the condition of SF 6 gas in the GIS basically in the sampler. As shown in fig. 1, a schematic diagram of a conventional gas micro-water density monitoring device is shown. The sampler is manufactured by adopting the processes of cutting, drilling and the like of an aluminum bar. The connection flange of the sampler is connected with the GIS body, SF 6 gas in the GIS automatically flows into the sampler cavity under the action of pressure difference, and the micro water density sensor is communicated with the sampling cavity, so that the micro water density sensor can detect micro water and density information of the gas in the sampler cavity, the information is remotely transmitted to a transformer substation background computer through a sensor cable, and transformer substation operation and maintenance personnel can know the micro water density condition of SF 6 gas in the GIS in real time.
According to the technical scheme, the monitoring process is that the volume of the cavity of the sampler is small, and convection cannot be formed between gas in the sampler and gas in the GIS cavity after the sampler is installed. Therefore, the micro-water density information of the SF 6 gas in the sampler can not truly reflect the micro-water density condition of the SF 6 gas in the GIS cavity. It is assumed that the gas micro-water content of SF 6 changes at a position far away from the sampler due to leakage or damp, and the gas micro-water content of SF 6 in the sampler does not change immediately. This results in micro-water density monitoring that is not real-time but rather is relatively slow.
Disclosure of Invention
The application aims to provide a micro-water density monitoring device for gas, which enables the gas in a sampler and the gas in a cavity of high-pressure gas insulated switchgear to flow by adding a vacuum pump and a pipeline. The micro water density information measured by the sensor can truly and effectively reflect the real-time micro water density condition of the gas in the high-pressure gas insulated switchgear.
In order to achieve the above object, an embodiment of the present application provides a micro water tightness monitoring device for gas, including:
the device comprises a first sampler, a second sampler, a first vacuum pump, a second vacuum pump, a pipeline and a micro water density sensor; wherein,
The first connecting flange of the first sampler is connected with one port of the air chamber of the high-pressure gas insulation switch device; the first connecting flange of the second sampler is connected with the other port of the air chamber of the high-pressure gas insulation switch device; the first sampler and the second sampler are respectively connected to different positions of the same air chamber of the high-pressure gas insulation switch device so that the gas in the whole air chamber is always in a circulating state;
One end of the pipeline is connected with the second connecting flange of the first sampler, and the other end of the pipeline is connected with the second connecting flange of the second sampler; the first vacuum pump is arranged in a second connecting flange of the first sampler, and the second vacuum pump is arranged in a second connecting flange of the second sampler; wherein the first vacuum pump and the second vacuum pump are installed in opposite directions;
The micro water density sensor is used for acquiring micro water density information of gas in the sampler in real time;
The first vacuum pump is used for providing power to enable the gas in the first sampler to flow into the pipeline; the second vacuum pump is used for providing power to enable the gas in the pipeline to flow into the second sampler.
Preferably, the second vacuum pump is configured to provide power to cause the gas in the second sampler to flow into the pipeline; the first vacuum pump is used for providing power to enable the gas in the pipeline to flow into the first sampler.
Preferably, the micro water density sensor comprises: a first micro-water density sensor and a second micro-water density sensor; the first micro water density sensor is used for acquiring micro water density information of gas in the first sampler in real time; the second micro water density sensor is used for acquiring micro water density information of the gas in the second sampler in real time.
Preferably, the micro water density sensor is connected with a transformer substation background computer through a sensor cable.
Compared with the prior art, the technical scheme has the advantages that the vacuum pump and the pipeline are additionally arranged, so that the gas in the sampler and the gas in the cavity of the high-pressure gas insulated switchgear form flow. The micro water content of the gas in the sampler is ensured to be the same as the micro water content in the air chamber of the high-pressure gas insulation switch equipment, so that the micro water information measured by the sensor is the real micro water content information of the gas in the air chamber of the high-pressure gas insulation switch equipment. If the gas is SF 6, reliable guarantee is provided for timely finding out that the micro water content of the SF 6 gas exceeds the standard, and safety accidents caused by the exceeding of the micro water content are avoided.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some of the embodiments described in the application, and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a conventional gas micro-water density monitoring device;
fig. 2 is a schematic diagram of a micro-water density monitoring device for gas according to an embodiment of the present application.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
Fig. 2 is a schematic diagram of a micro water density monitoring device for gas according to an embodiment of the present application. Comprising the following steps:
A first sampler 201, a second sampler 202, a first vacuum pump 203, a second vacuum pump 204, a pipeline 205 and a micro water density sensor; wherein,
The first connecting flange of the first sampler 201 is connected with one port of the air chamber of the high-pressure gas insulation switch device; the first connection flange of the second sampler 202 is connected to the other port of the gas chamber of the high-pressure gas-insulated switchgear.
One end of the pipeline 205 is connected with the second connecting flange of the first sampler 201, and the other end of the pipeline 205 is connected with the second connecting flange of the second sampler 202; the first vacuum pump 203 is arranged in a second connecting flange of the first sampler 201, and the second vacuum pump 204 is arranged in a second connecting flange of the second sampler; wherein the first vacuum pump 203 and the second vacuum pump 204 are installed in opposite directions.
The micro water density sensor is used for acquiring micro water density information of gas in the sampler in real time.
In fig. 2, the first connection flange of the first sampler 201 is located at the lower left of the illustrated sampler cavity, where the connection flange is connected to one port of the high-pressure gas-insulated switchgear, and the gas in the high-pressure gas-insulated switchgear flows into the cavity of the first sampler 201 through the first connection flange by the pressure difference. The port of the high-pressure gas-insulated switchgear is here taken as sampling point 1.
A second connection flange of the first sampler 201 is located at the upper right of the illustrated sampler chamber and is used to connect one end of the pipeline 205. When the first vacuum pump 203 is disposed in the second connection flange of the first sampler, the inlet of the vacuum pump 203 is at the lower outlet, so that the first vacuum pump 203 provides power to cause the gas in the chamber of the first sampler to flow into the pipe 205. The other end of the pipeline 205 is connected to a second connection flange of the second sampler 202. The second connection flange of the second sampler 202 is located at the upper right of the illustrated sampler cavity, and when the second vacuum pump 204 is disposed in the second connection flange of the second sampler 202, the inlet of the vacuum pump 204 is located at the lower upper outlet, so that the second vacuum pump 204 provides power to enable the gas in the pipeline 205 to flow into the cavity of the second sampler 202. The first connection flange of the second sampler 202 is connected to the other port of the high-pressure gas-insulated switchgear. The port of the high-pressure gas-insulated switchgear is here taken as sampling point 2.
After the installation is finished, the first vacuum pump and the second vacuum pump run simultaneously, and SF 6 gas in the cavity of the high-pressure gas insulated switchgear flows from the sampling point 1 to the sampling point 2 through the first sampler 201, the pipeline 205 and the second sampler 202 under the action of the pump. The sampling point 1 and the sampling point 2 are positioned in the air chambers of the same high-pressure gas insulated switchgear and are respectively connected to different positions of the same air chamber of the high-pressure gas insulated switchgear. So that the gas in the whole gas chamber is always in a circulating state. The micro water content of the gas in the sampler is ensured to be equivalent to the micro water content in the air chamber of the high-pressure gas insulated switchgear.
For the technical scheme, a vacuum pump and a pipeline system are added on the basis of the traditional sampler, and the sampler is always used in pairs. Further, as can be seen from the present embodiment, the first vacuum pump 203 is configured to provide power to enable the gas in the first sampler 201 to flow into the pipeline 205; the second vacuum pump 204 is configured to provide power to cause the gas in the line 205 to flow into the second sampler 202. The roles of the two vacuum pumps can be interchanged, namely: the second vacuum pump 204 is configured to provide power to cause the gas in the second sampler 202 to flow into the pipeline; the first vacuum pump 203 is configured to provide power to cause the gas in the pipeline to flow into the first sampler 201. As long as the installation directions of the two vacuum pumps are opposite, the air chamber of the high-pressure gas insulation switch device is communicated with the two samplers and the pipeline, and the gas is always in a flowing state under the action of the vacuum pumps.
As can be seen from fig. 2, the micro water density sensor includes: a first micro-water density sensor 206 and a second micro-water density sensor 206'; the first micro-water density sensor 206 is configured to acquire micro-water density information of the gas in the first sampler 201 in real time; the second micro water density sensor 206' is configured to obtain micro water density information of the gas in the second sampler 202 in real time. The first micro-water density sensor 206 and the second micro-water density sensor 206' are connected to a substation background computer through sensor cables, respectively. The micro water density information detected by the two sensors in real time is uploaded to a background computer, so that real micro water content information of SF 6 gas by a transformer substation is realized, reliable guarantee is provided for timely finding out that the micro water content of SF 6 gas exceeds the standard, and safety accidents caused by the real micro water content information are avoided.
While the present application has been described by way of embodiments, those of ordinary skill in the art will recognize that there are many variations and modifications of the present application without departing from the spirit of the application, and it is intended that the appended claims encompass such variations and modifications as do not depart from the spirit of the application.
Claims (3)
1. A micro-water density monitoring device for gas, comprising:
the device comprises a first sampler, a second sampler, a first vacuum pump, a second vacuum pump, a pipeline and a micro water density sensor; wherein,
The first connecting flange of the first sampler is connected with one port of the air chamber of the high-pressure gas insulation switch device; the first connecting flange of the second sampler is connected with the other port of the air chamber of the high-pressure gas insulation switch device; the first sampler and the second sampler are respectively connected to different positions of the same air chamber of the high-pressure gas insulation switch device so that the gas in the whole air chamber is always in a circulating state;
One end of the pipeline is connected with the second connecting flange of the first sampler, and the other end of the pipeline is connected with the second connecting flange of the second sampler; the first vacuum pump is arranged in a second connecting flange of the first sampler, and the second vacuum pump is arranged in a second connecting flange of the second sampler; wherein the first vacuum pump and the second vacuum pump are installed in opposite directions;
The micro water density sensor is used for acquiring micro water density information of gas in the sampler in real time;
the first vacuum pump is used for providing power to enable the gas in the first sampler to flow into the pipeline; the second vacuum pump is used for providing power to enable the gas in the pipeline to flow into the second sampler;
The roles of the two vacuum pumps can be interchanged, and the second vacuum pump is used for providing power to enable the gas in the second sampler to flow into the pipeline; the first vacuum pump is used for providing power to enable the gas in the pipeline to flow into the first sampler.
2. The micro-water density monitoring device according to claim 1, wherein the micro-water density sensor comprises: a first micro-water density sensor and a second micro-water density sensor; the first micro water density sensor is used for acquiring micro water density information of gas in the first sampler in real time; the second micro water density sensor is used for acquiring micro water density information of the gas in the second sampler in real time.
3. The micro water density monitoring device according to claim 1, wherein the micro water density sensor is connected with a substation background computer through a sensor cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711156177.0A CN107807209B (en) | 2017-11-20 | 2017-11-20 | Micro-water density monitoring device for gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711156177.0A CN107807209B (en) | 2017-11-20 | 2017-11-20 | Micro-water density monitoring device for gas |
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| CN107807209A CN107807209A (en) | 2018-03-16 |
| CN107807209B true CN107807209B (en) | 2024-05-14 |
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2704841Y (en) * | 2004-06-18 | 2005-06-15 | 长沙三德实业有限公司 | Volume fixing and closed loop cyclic gas analyzer of sulfur determiner |
| CN201277937Y (en) * | 2008-10-28 | 2009-07-22 | 山东泰开自动化有限公司 | SF6 gas small water density synthetic on-line monitoring system |
| CN201867326U (en) * | 2010-11-17 | 2011-06-15 | 郑州光力科技股份有限公司 | Sulfur hexafluoride (SF6) gas sampling detection device |
| CN102401834A (en) * | 2011-04-26 | 2012-04-04 | 中南大学 | Multi-channel on-line sampling and sample introducing method for high-temperature high-thickness liquid material |
| CN102507649A (en) * | 2011-12-29 | 2012-06-20 | 沈阳仪表科学研究院 | SF6 (Sulfur Hexafluoride) micro-water content transducer calibration device |
| CN203101118U (en) * | 2013-03-15 | 2013-07-31 | 太仓创造电子有限公司 | Novel non-pressure sampling system |
| CN203216523U (en) * | 2013-03-22 | 2013-09-25 | 朗松珂利(上海)仪器仪表有限公司 | Displacement type gas chamber for online monitoring of moisture content and density of SF6 gas |
| CN103512921A (en) * | 2013-08-01 | 2014-01-15 | 浙江工商大学 | Intelligent electronic nose system based device and method for analyzing freshness of pear |
| CN204269439U (en) * | 2014-12-12 | 2015-04-15 | 广西电网有限责任公司河池供电局 | Detect the online harmless sampling apparatus of sulfur hexafluoride decomposition gas |
| CN105628456A (en) * | 2015-12-18 | 2016-06-01 | 杭州同孚环保科技有限公司 | Field air sampling device with air current circulation |
| CN106123502A (en) * | 2016-06-16 | 2016-11-16 | 国网新疆电力公司检修公司 | 750 kilovolts of GIS excessive water content processing methods |
| CN205691995U (en) * | 2016-06-16 | 2016-11-16 | 国网新疆电力公司检修公司 | The composite control apparatus administered for 750 kilovolts of GIS air chamber excessive water content |
| CN206004206U (en) * | 2016-08-30 | 2017-03-08 | 山东惠工电气股份有限公司 | SF in a kind of GIS device6On-line period device |
| CN106501447A (en) * | 2016-10-14 | 2017-03-15 | 国网江西省电力公司电力科学研究院 | A kind of method that sulfur hexafluoride gas humidity is accurately measured online in GIS transformer stations |
| CN206192402U (en) * | 2016-11-14 | 2017-05-24 | 三峡大学 | Gaseous little water of SF6, density on -line monitoring system |
| CN207472852U (en) * | 2017-11-20 | 2018-06-08 | 北京国网富达科技发展有限责任公司 | A kind of micro- water density monitoring device of gas |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7073403B2 (en) * | 2002-10-03 | 2006-07-11 | Eai Corporation | Method and apparatus for the collection of samples |
-
2017
- 2017-11-20 CN CN201711156177.0A patent/CN107807209B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2704841Y (en) * | 2004-06-18 | 2005-06-15 | 长沙三德实业有限公司 | Volume fixing and closed loop cyclic gas analyzer of sulfur determiner |
| CN201277937Y (en) * | 2008-10-28 | 2009-07-22 | 山东泰开自动化有限公司 | SF6 gas small water density synthetic on-line monitoring system |
| CN201867326U (en) * | 2010-11-17 | 2011-06-15 | 郑州光力科技股份有限公司 | Sulfur hexafluoride (SF6) gas sampling detection device |
| CN102401834A (en) * | 2011-04-26 | 2012-04-04 | 中南大学 | Multi-channel on-line sampling and sample introducing method for high-temperature high-thickness liquid material |
| CN102507649A (en) * | 2011-12-29 | 2012-06-20 | 沈阳仪表科学研究院 | SF6 (Sulfur Hexafluoride) micro-water content transducer calibration device |
| CN203101118U (en) * | 2013-03-15 | 2013-07-31 | 太仓创造电子有限公司 | Novel non-pressure sampling system |
| CN203216523U (en) * | 2013-03-22 | 2013-09-25 | 朗松珂利(上海)仪器仪表有限公司 | Displacement type gas chamber for online monitoring of moisture content and density of SF6 gas |
| CN103512921A (en) * | 2013-08-01 | 2014-01-15 | 浙江工商大学 | Intelligent electronic nose system based device and method for analyzing freshness of pear |
| CN204269439U (en) * | 2014-12-12 | 2015-04-15 | 广西电网有限责任公司河池供电局 | Detect the online harmless sampling apparatus of sulfur hexafluoride decomposition gas |
| CN105628456A (en) * | 2015-12-18 | 2016-06-01 | 杭州同孚环保科技有限公司 | Field air sampling device with air current circulation |
| CN106123502A (en) * | 2016-06-16 | 2016-11-16 | 国网新疆电力公司检修公司 | 750 kilovolts of GIS excessive water content processing methods |
| CN205691995U (en) * | 2016-06-16 | 2016-11-16 | 国网新疆电力公司检修公司 | The composite control apparatus administered for 750 kilovolts of GIS air chamber excessive water content |
| CN206004206U (en) * | 2016-08-30 | 2017-03-08 | 山东惠工电气股份有限公司 | SF in a kind of GIS device6On-line period device |
| CN106501447A (en) * | 2016-10-14 | 2017-03-15 | 国网江西省电力公司电力科学研究院 | A kind of method that sulfur hexafluoride gas humidity is accurately measured online in GIS transformer stations |
| CN206192402U (en) * | 2016-11-14 | 2017-05-24 | 三峡大学 | Gaseous little water of SF6, density on -line monitoring system |
| CN207472852U (en) * | 2017-11-20 | 2018-06-08 | 北京国网富达科技发展有限责任公司 | A kind of micro- water density monitoring device of gas |
Non-Patent Citations (1)
| Title |
|---|
| SF6 电气设备中水分控制标准的研究;张欣 等;《高电压技术》;第43 卷(第1 期);第240页-246页 * |
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