CN211784056U - GIS electric power system vacuum degree detection device - Google Patents
GIS electric power system vacuum degree detection device Download PDFInfo
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- CN211784056U CN211784056U CN202020263147.0U CN202020263147U CN211784056U CN 211784056 U CN211784056 U CN 211784056U CN 202020263147 U CN202020263147 U CN 202020263147U CN 211784056 U CN211784056 U CN 211784056U
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Abstract
The utility model discloses a GIS electric power system vacuum detection device, including the switching-over valve, data acquisition processing unit, the display element, wide range pressure sensor, narrow range pressure sensor, be provided with an air inlet and two gas outlets on the switching-over valve, the air inlet on the switching-over valve links to each other with the GIS air chamber, wide range pressure sensor and narrow range pressure sensor connect respectively on two gas outlets on the switching-over valve, wide range pressure sensor and narrow range pressure sensor are connected with data acquisition processing unit electricity respectively, the display element is connected with the data acquisition processing unit electricity. The utility model discloses a mode that wide range pressure sensor and narrow range pressure sensor combined together has satisfied the measurement demand of GIS system under different states, has improved measurement accuracy.
Description
Technical Field
The utility model relates to an electric power tech field, in particular to GIS electric power system vacuum detection device.
Background
The vacuum degree is one of three major factors needing attention in the installation process of a GIS power system, the vacuumizing is also an important process link in the maintenance process, the degree of the vacuum degree directly influences the drying degree in the equipment, and the method has great significance for the safe operation of the equipment. And after the GIS air chamber is cleaned in the tank body, the adsorbent is packaged, then the tank body is vacuumized, and SF6 gas is filled in the tank body. The operation condition of the installed GIS equipment is determined by four factors, namely the purity, pressure, water content and annual leakage rate of SF6 filled in the air chamber. The annual leakage rate is generally controlled in the installation and detection process, and the other three indexes need to be strictly monitored in the processes of vacuumizing and inflating. Therefore, the process of vacuumizing and filling with SF6 gas is the most important factor for installing the GIS. The vacuum degree must reach 133Pa, and the vacuum is continuously pumped for 30min to fill SF6 gas, and in addition, the sealing performance is also fed back by the vacuum degree. The existing GIS equipment is usually provided with a pressure sensor for measuring the air pressure in a GIS air chamber. The pressure sensor can display the pressure change of the GIS air chamber in the vacuumizing process and the pressure change of the GIS air chamber in the normal operation process. In practice, in order to meet the two measurement requirements, a wide-range pressure sensor is generally adopted, but although the measurement range of the wide-range pressure sensor is wider, the measurement accuracy is poor when the pressure variation range is smaller, and accurate pressure variation data cannot be provided.
Disclosure of Invention
The utility model aims at solving the pressure in the GIS air chamber of measuring through the pressure sensor of wide range among the current GIS electric power system, the pressure sensor of wide range is wide although measuring range, but when to the less condition of pressure variation range, measurement accuracy is not good, can't provide the problem of accurate pressure variation data, provides a GIS electric power system vacuum detection device, can effectively solve above-mentioned problem.
The utility model aims at realizing through the following technical scheme: the utility model provides a GIS electric power system vacuum detection device, including the switching-over valve, the data acquisition processing unit, the display element, wide range pressure sensor, narrow range pressure sensor, be provided with an air inlet and two gas outlets on the switching-over valve, the air inlet on the switching-over valve links to each other with the GIS air chamber, wide range pressure sensor and narrow range pressure sensor connect respectively on two gas outlets on the switching-over valve, wide range pressure sensor and narrow range pressure sensor are connected with the data acquisition processing unit electricity respectively, the display element is connected with the data acquisition processing unit electricity.
The utility model discloses in, adopt the mode that wide range pressure sensor and narrow range pressure sensor combined together to monitor the pressure in the GIS air chamber, the effect of switching-over valve is to switching over two pressure sensor to different circumstances, when the GIS air chamber evacuation, pressure variation range is great this moment, through switching-over valve with wide range pressure sensor and GIS air chamber switch-on, narrow range pressure sensor then not switch-on, because wide range pressure sensor's range is big, can monitor the pressure variation in the GIS air chamber effectively; when the GIS system normally operates, the pressure change range in the GIS air chamber is small, the narrow-range pressure sensor is communicated with the GIS air chamber through the reversing valve, the wide-range pressure sensor is not communicated, and higher measurement accuracy is obtained through the small-range pressure sensor. The data acquisition and processing unit is used for processing the measurement signal of the pressure sensor and displaying the pressure value through the display unit. The utility model discloses a mode that wide range pressure sensor and narrow range pressure sensor combined together has satisfied the measurement demand of GIS system under different states, has improved measurement accuracy.
Preferably, the reversing valve is an electromagnetic reversing valve.
Preferably, the reversing valve is a manual reversing valve.
Preferably, the data acquisition and processing unit is electrically connected with a power supply. The power supply provides electric power for the data acquisition and processing unit.
Preferably, the power source is a lithium battery.
Preferably, the data acquisition and processing unit is electrically connected with the wireless transmission unit. The wireless transmission unit can send out measured data through wireless signal, and the operator accessible remote equipment is received to realize remote monitoring.
Preferably, the wireless transmission unit is a GPRS module.
The utility model has the advantages that: the utility model discloses a mode that wide range pressure sensor and narrow range pressure sensor combined together has satisfied the measurement demand of GIS system under different states, has improved measurement accuracy.
Drawings
Fig. 1 is a block diagram of the system structure of the present invention.
In the figure: 1. GIS air chamber, 2, switching-over valve, 3, wide range pressure sensor, 4, narrow range pressure sensor, 5, data acquisition processing unit, 6, display element, 7, power, 8, GPRS module.
Detailed Description
The invention will be further described with reference to the following detailed description and accompanying drawings.
Example 1:
as shown in fig. 1, a vacuum degree detection device for a GIS power system comprises a GIS air chamber 1, a reversing valve 2, a data acquisition and processing unit 5, a display unit 6, a wide-range pressure sensor 3, a narrow-range pressure sensor 4 and a wireless transmission unit. The reversing valve 2 is provided with an air inlet and two air outlets. In this embodiment, the direction valve 2 is an electromagnetic direction valve. An air inlet on the reversing valve 2 is connected with the GIS air chamber 1, the wide-range pressure sensor 3 and the narrow-range pressure sensor 4 are respectively connected with two air outlets on the reversing valve 2, and the wide-range pressure sensor 3 and the narrow-range pressure sensor 4 are respectively and electrically connected with the data acquisition and processing unit 5. The display unit 6 is electrically connected with the data acquisition and processing unit 5. The data acquisition and processing unit 5 is electrically connected with a power supply 7. The power supply 7 is a lithium battery. The wireless transmission unit is electrically connected with the data acquisition and processing unit 5. The wireless transmission unit is a GPRS module. The wireless transmission unit can send out measured data through wireless signal, and the operator accessible remote equipment is received to realize remote monitoring.
The utility model discloses in, adopt the mode that wide range pressure sensor and narrow range pressure sensor combined together to monitor the pressure in the GIS air chamber, the effect of switching-over valve is to switching over two pressure sensor to different circumstances, when the GIS air chamber evacuation, pressure variation range is great this moment, through switching-over valve with wide range pressure sensor and GIS air chamber switch-on, narrow range pressure sensor then not switch-on, because wide range pressure sensor's range is big, can monitor the pressure variation in the GIS air chamber effectively; when the GIS system normally operates, the pressure change range in the GIS air chamber is small, the narrow-range pressure sensor is communicated with the GIS air chamber through the reversing valve, the wide-range pressure sensor is not communicated, and higher measurement accuracy is obtained through the small-range pressure sensor. The data acquisition and processing unit is used for processing the measurement signal of the pressure sensor and displaying the pressure value through the display unit. The utility model discloses a mode that wide range pressure sensor and narrow range pressure sensor combined together has satisfied the measurement demand of GIS system under different states, has improved measurement accuracy.
Example 2:
example 2 differs from example 1 in that: in embodiment 2, the direction changing valve 2 is a manual direction changing valve, and the rest of the structure is the same as that of embodiment 1.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.
Claims (7)
1. The utility model provides a GIS electric power system vacuum detection device which characterized in that: the gas inlet on the reversing valve is connected with the GIS gas chamber, the wide-range pressure sensor and the narrow-range pressure sensor are respectively connected to the two gas outlets on the reversing valve, the wide-range pressure sensor and the narrow-range pressure sensor are respectively electrically connected with the data acquisition and processing unit, and the display unit is electrically connected with the data acquisition and processing unit.
2. The GIS power system vacuum degree detection device of claim 1, wherein the reversing valve is an electromagnetic reversing valve.
3. The GIS power system vacuum degree detection device of claim 1, wherein the reversing valve is a manual reversing valve.
4. The GIS power system vacuum degree detection device of claim 1, wherein the data acquisition processing unit is electrically connected with a power supply.
5. The GIS power system vacuum degree detection device of claim 4, wherein the power source is a lithium battery.
6. The GIS power system vacuum degree detection device of claim 1, wherein the data acquisition processing unit is electrically connected with the wireless transmission unit.
7. The GIS power system vacuum degree detection device of claim 6, wherein the wireless transmission unit is a GPRS module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020263147.0U CN211784056U (en) | 2020-03-05 | 2020-03-05 | GIS electric power system vacuum degree detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020263147.0U CN211784056U (en) | 2020-03-05 | 2020-03-05 | GIS electric power system vacuum degree detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211784056U true CN211784056U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020263147.0U Active CN211784056U (en) | 2020-03-05 | 2020-03-05 | GIS electric power system vacuum degree detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN211784056U (en) |
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2020
- 2020-03-05 CN CN202020263147.0U patent/CN211784056U/en active Active
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