CN207472852U - A kind of micro- water density monitoring device of gas - Google Patents
A kind of micro- water density monitoring device of gas Download PDFInfo
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- CN207472852U CN207472852U CN201721553577.0U CN201721553577U CN207472852U CN 207472852 U CN207472852 U CN 207472852U CN 201721553577 U CN201721553577 U CN 201721553577U CN 207472852 U CN207472852 U CN 207472852U
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- sampler
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- water density
- micro
- vacuum pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 abstract description 4
- 238000005070 sampling Methods 0.000 description 5
- 229910018503 SF6 Inorganic materials 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 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
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The application embodiment discloses a kind of micro- water density monitoring device of gas, including：First sampler, the second sampler, the first vacuum pump, the second vacuum pump, pipeline and micro- water density sensor；Wherein, the first connecting flange of first sampler is connected with the Single port of the gas chamber of high pressure gas insulated switching installation；First connecting flange of second sampler is connected with the another port of the gas chamber of high pressure gas insulated switching installation；One end of the pipeline is connected with the second connecting flange of first sampler, and the other end of the pipeline is connected with the second connecting flange of second sampler；First vacuum pump is arranged in the second connecting flange of first sampler, and second vacuum pump is arranged in the second connecting flange of second sampler；Wherein, first vacuum pump and the second vacuum pump installation direction are opposite；Micro- water density sensor, for obtaining micro- water density information of gas in sampler in real time.
Description
Technical Field
The application relates to the technical field of gas micro-water density, in particular to a gas micro-water density monitoring device.
Background
SF6The gas has excellent insulating property and arc extinguishing property, is widely applied to high-voltage Gas Insulated Switchgear (GIS) at the present stage, and is a relatively ideal insulating and arc extinguishing medium under normal working conditions. The working pressure and the micro-water content have direct influence on the safe and reliable operation of the equipment if SF6The density is reduced or the micro water content in the gas exceeds the standard due to gas leakage, and potential safety hazards and even accidents can be caused to high-voltage electrical equipment. Therefore, for SF in GIS6The monitoring of the density and the micro-water content of the gas plays an important role in reducing the generation of accidents and the personal harm.
Because GIS is a totally-enclosed combined electrical appliance, the SF in the GIS needs to be treated6A sampler is needed for monitoring gas, a cavity of the sampler is communicated with a GIS cavity, and SF in the sampler6The micro-water density information can basically reflect the SF inside the GIS6The condition of the gas. Fig. 1 is a schematic diagram of a conventional gas micro-water density monitoring device. The sampler is made of aluminum bars through processes such as cutting, drilling and the like. Connecting the connecting flange of the sampler with the GIS body, under the action of pressure difference, SF in the GIS6The gas automatically flows into the cavity of the sampler, 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 cavity of the sampler, the information is remotely transmitted to a background computer of a transformer substation through a sensor cable, and the transformer substation operation and maintenance personnel can know SF (sulfur hexafluoride) in the GIS in real time6Micro water density profile of gas.
According to the technical scheme, the monitoring process shows that the volume of the cavity of the sampler is small, and the gas in the sampler and the gas in the GIS cavity cannot form convection after the sampler is installed. Therefore, the SF in the sampler6The micro water density information of the gas cannot truly reflect SF in the GIS cavity6Micro water density condition of gas. Suppose that the GIS is away from the sampler and is affected by SF due to leakage or damp6The micro water content of the gas changes, and SF in the sampler6The gas micro-water content does not change immediately. This results in the micro-water density monitoring not being real time but rather being relatively delayed.
SUMMERY OF THE UTILITY MODEL
The purpose of the embodiment of the application is to provide a gas micro-water density monitoring device, which enables gas in a sampler and gas in a cavity of a high-pressure gas insulation switch device to form 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-voltage gas insulated switchgear.
In order to achieve the above object, an embodiment of the present invention provides a gas micro water density monitoring device, 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,
a first connecting flange of the first sampler is connected with one port of a gas chamber of the high-pressure gas insulated switchgear; the first connecting flange of the second sampler is connected with the other port of the gas chamber of the high-pressure gas insulated switchgear;
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.
Preferably, 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 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.
Preferably, the micro water density sensor includes: 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; and the second micro water density sensor is used for acquiring micro water density information of gas in the second sampler in real time.
Preferably, the micro water density sensor is connected with a substation background computer through a sensor cable.
From top to bottom, compare with prior art, this technical scheme makes gas form the flow in sample thief and high-pressure gas insulated switchgear's the cavity through increasing vacuum pump and pipeline. The micro-water content of the gas in the sampler is ensured to be the same as the micro-water content of the gas chamber of the high-pressure gas insulated switchgear, so that the micro-water information measured by the sensor is the real micro-water content information of the gas in the gas chamber of the high-pressure gas insulated switchgear. If the gas is SF6Then find SF in time6The excessive gas micro-water content provides reliable guarantee, and safety accidents caused by the excessive gas micro-water content are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a conventional gas micro-water density monitoring device;
fig. 2 is a schematic view of a gas micro-water density monitoring device according to an embodiment of the present disclosure.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application shall fall within the scope of protection of the present application.
Fig. 2 is a schematic view of a gas micro-water density monitoring device according to an embodiment of the present invention. The method comprises 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,
a first connecting flange of the first sampler 201 is connected with one port of a gas chamber of the high-pressure gas insulation switch device; the first connecting flange of the second sampler 202 is connected with the other end of the gas chamber of the high-pressure gas-insulated switchgear.
One end of the pipeline 205 is connected to the second connecting flange of the first sampler 201, and the other end of the pipeline 205 is connected to 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 connecting flange of the first sampler 201 is located at the lower left of the sampler chamber, where the connecting flange is connected to a port of the high-pressure gas-insulated switchgear, and the gas in the high-pressure gas-insulated switchgear flows into the chamber of the first sampler 201 through the first connecting flange by the pressure difference. The port of the high-voltage gas-insulated switchgear is referred to as sampling point 1.
The second connecting flange of the first sampler 201, which is used to connect one end of the pipe 205, is located at the upper right of the sampler chamber as shown. When the first vacuum pump 203 is disposed in the second connecting 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 make the gas in the cavity of the first sampler flow into the pipeline 205. The other end of line 205 is connected to a second connecting flange of second sampler 202. The second connecting flange of the second sampler 202 is located at the upper right of the sampler chamber as shown, and when the second vacuum pump 204 is disposed in the second connecting flange of the second sampler 202, the inlet of the vacuum pump 204 is located at the lower outlet, so that the second vacuum pump 204 provides power to make the gas in the pipeline 205 flow into the chamber 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-voltage gas-insulated switchgear is referred to as sampling point 2.
Is installed completelyAfter completion, the first vacuum pump and the second vacuum pump are operated simultaneously, and the SF in the cavity of the high-pressure gas insulated switchgear6Gas flows from sample point 1 through the first sampler 201, line 205, second sampler 202 to sample point 2 under the action of the pump. The sampling point 1 and the sampling point 2 are positioned in the same gas chamber of the high-voltage gas insulated switchgear and are respectively connected to different positions of the same gas chamber of the high-voltage 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 gas chamber of the high-voltage 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. Moreover, as can be seen from this embodiment, the first vacuum pump 203 is used to provide power to make the gas in the first sampler 201 flow into the pipeline 205; the second vacuum pump 204 is used to provide power to cause the gas in the line 205 to flow into the second sampler 202. In fact, the roles of the two vacuum pumps can be interchanged, that is: the second vacuum pump 204 is used for providing power to enable the gas in the second sampler 202 to flow into the pipeline; the first vacuum pump 203 is used for providing power to enable 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 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 obtain micro water density information of the gas in the first sampler 201 in real time; the second micro water density sensor 206' is used for acquiring 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 respectively connected with a substation background computer through sensor cables. Micro water density information detected by two sensors in real time is uploaded to a background meterComputer for realizing SF of transformer substation6Real micro water content information of gas for finding SF in time6The excessive gas micro-water content provides reliable guarantee, and safety accidents caused by the excessive gas micro-water content are avoided.
Although the present application has been described in terms of embodiments, those of ordinary skill in the art will recognize that there are numerous variations and permutations of the present application without departing from the spirit of the application, and it is intended that the appended claims encompass such variations and permutations without departing from the spirit of the application.
Claims (5)
1. A gas microwater density monitoring device, 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,
a first connecting flange of the first sampler is connected with one port of a gas chamber of the high-pressure gas insulated switchgear; the first connecting flange of the second sampler is connected with the other port of the gas chamber of the high-pressure gas insulated switchgear;
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.
2. The micro water density monitoring device of claim 1, wherein the first vacuum pump is used to provide power to make the gas in the first sampler 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.
3. The micro-water density monitoring device of claim 1, wherein the second vacuum pump is used to provide power to make the gas in the second sampler 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.
4. 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; and the second micro water density sensor is used for acquiring micro water density information of gas in the second sampler in real time.
5. The micro water density monitoring device of claim 1, wherein the micro water density sensor is connected to a substation background computer through a sensor cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721553577.0U CN207472852U (en) | 2017-11-20 | 2017-11-20 | A kind of micro- water density monitoring device of gas |
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| CN201721553577.0U CN207472852U (en) | 2017-11-20 | 2017-11-20 | A kind of micro- water density monitoring device of gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807209A (en) * | 2017-11-20 | 2018-03-16 | 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 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807209A (en) * | 2017-11-20 | 2018-03-16 | 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 |
| CN107807209B (en) * | 2017-11-20 | 2024-05-14 | 北京国网富达科技发展有限责任公司 | Micro-water density monitoring device for gas |
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