CN213544524U - Sulfur hexafluoride quality sensing device in GIS - Google Patents
Sulfur hexafluoride quality sensing device in GIS Download PDFInfo
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- CN213544524U CN213544524U CN202022594276.0U CN202022594276U CN213544524U CN 213544524 U CN213544524 U CN 213544524U CN 202022594276 U CN202022594276 U CN 202022594276U CN 213544524 U CN213544524 U CN 213544524U
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Abstract
The utility model discloses a sulfur hexafluoride quality perception device in GIS belongs to electrical detection equipment technical field, include the quality perception device body that is linked together through the pipeline with GIS air chamber (1), quality perception device body include with data acquisition analytic system (2) that GIS air chamber (1) links to each other, data acquisition analytic system (2) are linked together with inflation system (3) and gassing system (4) respectively, gassing system (4) are linked together with waste gas recovery system (5), the pipeline is linked together with evacuation system (6). The utility model provides a pair of sulfur hexafluoride quality perception device in GIS can high efficiency detect out the interior gas quality of GIS gas chamber, and the device is portable, convenient operation, is convenient for develop the witnessed inspections, has satisfied the gaseous demand of examining, gas overhaul retirement quality measurement of scene.
Description
Technical Field
The utility model relates to a sulfur hexafluoride quality perception device in GIS belongs to electrical detection equipment technical field.
Background
In order to control and reduce the emission of sulfur hexafluoride gas, national network companies are dedicated to a series of work of research and development, pilot application, comprehensive popularization, management and improvement and the like of a sulfur hexafluoride gas recycling system for many years. After a supervision and management method for sulfur hexafluoride gas recovery and recycling (national grid company, 2017) 1066 (national grid tongue and groove) (hereinafter referred to as the 'method') of 2017 national grid company, each unit strictly carries out sulfur hexafluoride gas recovery and recycling work according to the 'method' requirement specification.
And 3, 11 days in 2019, the state resource committee issues a 'notice on the issuance of a central enterprise energy conservation and ecological environment protection statistical statement', the notice is implemented from 7 and 1 days in 2019, and the 'sulfur hexafluoride gas recovery rate' is brought into the management performance assessment of the central enterprise responsible person in the duty period. As a constraint term, the target value was determined to be 96.5% (95.5% in 2019, 96.0% in 2020, and 96.5% in 2021), which is 1.5% higher than that in 2018. The sulfur hexafluoride gas use scene relates to a plurality of stages of capital construction, operation and maintenance, overhaul, equipment retirement, purification treatment and the like, and due to the complexity of the sulfur hexafluoride gas use range, the management department faces severe index assessment responsibility and great pressure on safe operation of the equipment.
At present, the density of sulfur hexafluoride (SF 6) gas in GIS power equipment can be measured, but the mass of the SF6 gas cannot be calculated or directly measured, and a measuring instrument is inconvenient to carry and operate.
Current SF6 gas sampling equipment often leans on the manual work to control, and sample volume control precision is low, seriously influences the degree of accuracy of SF6 gas quality survey, and the sample volume is too much to bring hidden danger for GIS electrical equipment internal insulation, and the vacuum of sample container is hardly guaranteed simultaneously to sample under the state of equipment stop work, the sampling process is loaded down with trivial details, and relevant check out time is long, consumes manpower, material resources.
The existing SF6 gas detection data are filled in manually, so that the problems of large workload, heavy task and relatively inaccurate data exist, and the difficulty is increased for the collection and analysis of the detection data.
Therefore, a method for rapidly and efficiently detecting the gas quality in the GIS gas chamber with unknown volume needs to be researched, and a suitable measuring device is developed to meet the requirements of field gas inspection and gas overhaul retirement quality measurement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a have inflation system and gassing system is provided, get and aerify, the twice measuring result average value of gassing be final testing result, make the more true and more reliable sulfur hexafluoride quality perception device in the GIS of testing result.
Further, the utility model provides a sulfur hexafluoride quality perception device in GIS that is applicable to GIS electrical equipment and shuts down or the work sight, can guarantee GIS electrical equipment safety, reliable, steady operation.
Further, the utility model provides an degree of automation is high, and the testing process is simple and direct, and data is complete accurate, sulfur hexafluoride quality perception device in the GIS that the result analysis efficiency is high.
Further, the utility model provides a but waste gas recycle's sulfur hexafluoride quality perception device in GIS.
In order to solve the technical problem, the utility model discloses a technical scheme does:
the sulfur hexafluoride quality sensing device in the GIS comprises a quality sensing device body communicated with a GIS air chamber through a pipeline, wherein the quality sensing device body comprises a data acquisition and analysis system connected with the GIS air chamber, the data acquisition and analysis system is respectively communicated with an inflation system and an deflation system, the deflation system is communicated with a waste gas recovery system, and the pipeline is communicated with a vacuumizing system.
The GIS air chamber is connected with a first pipeline, and the first pipeline is provided with a densimeter, a hand valve I and a pressure gauge; the other end of the first pipeline is connected with the data acquisition and analysis system.
The data acquisition and analysis system comprises a second pipeline communicated with the first pipeline, a mass flow controller, a temperature sensor and a pressure sensor are arranged on the second pipeline, the mass flow controller, the temperature sensor and the pressure sensor are all connected with the monitoring terminal, and the other end of the second pipeline is respectively communicated with the inflation system, the deflation system and the vacuum pumping system.
The inflation system comprises a third pipeline communicated with the second pipeline, a first electromagnetic valve, a second hand valve and a pressure reducing valve are arranged on the third pipeline, and the pressure reducing valve is connected with the pure gas bottle.
The air bleeding system comprises a fourth pipeline communicated with the second pipeline, a second electromagnetic valve is arranged on the fourth pipeline, the other end of the fourth pipeline is connected with an air storage tank, and the air storage tank is communicated with the waste gas recovery system.
The vacuumizing system comprises a fifth pipeline communicated with the second pipeline, a third electromagnetic valve and a vacuum pump are arranged on the fifth pipeline, a sixth pipeline is connected to the fifth pipeline between the third electromagnetic valve and the vacuum pump, and a fourth electromagnetic valve and a vacuum gauge are arranged on the sixth pipeline.
The waste gas recovery system comprises a seventh pipeline connected to the gas storage tank, a flow regulating valve, a buffer tank, a compressor, a heat exchanger and a waste gas bottle are sequentially arranged on the seventh pipeline, and a fifth electromagnetic valve is connected between the compressor and the heat exchanger in parallel.
The heat exchanger is connected with the refrigerating machine.
The mass flow controller is a digital mass flow controller.
The waste gas recovery system is connected with a purification system, and the purification system is connected with the pure gas cylinder.
The utility model provides a pair of sulfur hexafluoride quality perception device in GIS has following beneficial effect:
(1) the utility model discloses fill the blank of SF6 gas mass direct measurement technique in the unknown volume GIS air chamber, and the device is portable, convenient operation, is convenient for develop the witnessed inspections.
(2) The utility model discloses can be applicable to GIS electrical equipment and shut down or the work sight according to the accurate control sample volume of getting gas of setting for, can guarantee electrical equipment safety, reliable, steady operation.
(3) The utility model discloses measurement control and data analysis system with high integration, degree of automation is high, and the testing process is simple and direct, and data is complete accurate, and result analysis is efficient.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a flow chart of the inflation process of the present invention;
fig. 3 is a flow chart of the deflation process in the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the device for sensing the quality of sulfur hexafluoride in the GIS comprises an inflation system 3, an deflation system 4, a vacuum pumping system 6, a waste gas recovery system 5, a data acquisition and analysis system 2, and various valves and meters. The method comprises the following steps that a GIS air chamber 1 is inflated (qualified gas sample) and deflated, a digital mass flow controller is adopted to monitor the mass flow of sulfur hexafluoride gas in real time, and data are transmitted to a data acquisition and analysis system 2 through a digital interface; meanwhile, the pressure and temperature changes before and after inflation or deflation are monitored in real time, the pressure and temperature changes are transmitted into the data acquisition and analysis system 2 through the sensing equipment, the gas quality value in the GIS gas chamber 1 in the inflation and deflation processes is respectively obtained through the data acquisition and analysis system 2 according to the data of the gas quality increase (decrease), the pressure, the temperature change and the like in the inflation and deflation processes, and the average value of the two measurement results is taken as the final detection result.
The structure of the sulfur hexafluoride quality sensing device in the GIS of the embodiment is as follows:
1. inflation system
1) The inflation system 3 mainly comprises a pure gas cylinder 35, a pressure reducing valve 34, a first electromagnetic valve 32 and a second hand valve 33;
2) the gas in the pure gas bottle 35 is sulfur hexafluoride gas which is qualified through detection and can be filled into the GIS gas chamber 1.
2. Air bleed system
1) The air discharging system 4 mainly comprises an air storage tank 43, a second electromagnetic valve 42 and the like;
2) the air tank 43 has a capacity of 20L.
3. Vacuum pumping system
1) The vacuum pumping system 6 mainly comprises a vacuum pump 63, a vacuum gauge 66, a third electromagnetic valve 62, a fourth electromagnetic valve 65 and the like;
2) the vacuum pump 63 evacuates at a speed of 1L/s and its outlet is vented to atmosphere.
4. Waste gas recovery system
1) The waste gas recovery system 5 mainly comprises a compressor 54, a refrigerator 58, a heat exchanger 55, a waste gas bottle 56, a buffer tank 53, a five solenoid valve 57, a regulating valve 52 and the like;
2) the recovered gas is not purified and must be treated as waste gas, and cannot be directly filled into the GIS gas chamber 1.
5. Data acquisition and analysis system
1) The data acquisition and analysis system 2 mainly comprises a temperature sensor 23, a pressure sensor 24, a digital mass flow controller, a monitoring terminal 25 and the like.
2) The data acquisition and analysis system 2 calculates the gas quality value in the GIS gas chamber 1 in the inflation process and the gas quality value in the GIS gas chamber 1 in the deflation process by measuring the related data, and takes the average value as the final detection result.
6. Valve and meter
1) The valve and meter comprises an electromagnetic valve, a hand valve, a flow regulating valve, a temperature sensor, a pressure sensor, a digital mass flow controller and the like;
2) the digital mass flow controller adopts analog and digital compatible types; the instantaneous flow can be set and displayed through an analog secondary instrument and a PLC (programmable logic controller), and the instantaneous flow can also be directly communicated with a computer through a digital interface. The method has the characteristics of universality for analog control systems and digital control systems.
Specifically, the specific structure of the sulfur hexafluoride quality sensing device in the GIS of this embodiment is as follows:
the sulfur hexafluoride quality sensing device in the GIS comprises a quality sensing device body communicated with a GIS air chamber 1 through a pipeline, wherein the quality sensing device body comprises a data acquisition and analysis system 2 connected with the GIS air chamber 1, the data acquisition and analysis system 2 is respectively communicated with an inflation system 3 and an deflation system 4, the deflation system 4 is communicated with a waste gas recovery system 5, and the pipeline is communicated with a vacuum pumping system 6.
The GIS air chamber 1 is connected with a first pipeline 11, and a densimeter 12, a first hand valve 13 and a pressure gauge 14 are arranged on the first pipeline 11; the other end of the first pipeline 11 is connected with the data acquisition and analysis system 2.
The data acquisition and analysis system 2 comprises a second pipeline 21 communicated with the first pipeline 11, a mass flow controller 22, a temperature sensor 23 and a pressure sensor 24 are arranged on the second pipeline 21, the mass flow controller 22, the temperature sensor 23 and the pressure sensor 24 are all connected with a monitoring terminal 25, and the other end of the second pipeline 21 is respectively communicated with the inflation system 3, the deflation system 4 and the vacuum-pumping system 6.
The inflation system 3 comprises a third pipeline 31 communicated with the second pipeline 21, a first electromagnetic valve 32, a second hand valve 33 and a pressure reducing valve 34 are arranged on the third pipeline 31, and the pressure reducing valve 34 is connected with a pure gas bottle 35.
The air bleeding system 4 comprises a fourth pipeline 41 communicated with the second pipeline 21, a second electromagnetic valve 42 is arranged on the fourth pipeline 41, the other end of the fourth pipeline 41 is connected with an air storage tank 43, and the air storage tank 43 is communicated with the waste gas recovery system 5.
The vacuum pumping system 6 comprises a fifth pipeline 61 communicated with the second pipeline 21, the fifth pipeline 61 is provided with a third electromagnetic valve 62 and a vacuum pump 63, the fifth pipeline 61 between the third electromagnetic valve 62 and the vacuum pump 63 is connected with a sixth pipeline 64, and the sixth pipeline 64 is provided with a fourth electromagnetic valve 65 and a vacuum gauge 66.
The waste gas recovery system 5 comprises a seventh pipeline 51 connected to the gas storage tank 43, the seventh pipeline 51 is sequentially provided with a flow regulating valve 52, a buffer tank 53, a compressor 54, a heat exchanger 55 and a waste gas bottle 56, and a five electromagnetic valve 57 is connected in parallel between the compressor 54 and the heat exchanger 55.
The heat exchanger 55 is connected to a refrigerator 58.
The mass flow controller 22 is a digital type mass flow controller. The digital mass flow controller adopts analog and digital compatible types; the instantaneous flow can be set and displayed through an analog secondary instrument and a PLC (programmable logic controller), and the instantaneous flow can also be directly communicated with a computer through a digital interface. The method has the characteristics of universality for analog control systems and digital control systems. Thereby make the utility model discloses degree of automation is high, and the testing process is simple and direct, and data is complete accurate, and result analysis is efficient.
The waste gas recovery system 5 is connected to a purification system, which is connected to the pure gas cylinder 35. In this embodiment, after the sulfur hexafluoride gas pumped out from the GIS gas chamber 1 is purified, the pure gas bottle 35 can be refilled again, so that next inflation of the GIS gas chamber 1 is realized, and the sulfur hexafluoride gas is recycled.
As shown in fig. 2 to fig. 3, the working process of the device for sensing the quality of sulfur hexafluoride in the GIS of the present invention is as follows:
1. air inflation measurement
1) Recording the initial state (pressure and density) of the detected GIS gas chamber 1, and connecting the quality sensing device body with the detected GIS gas chamber 1;
2) switching on a power supply, and starting a vacuum pump 63 to vacuumize the quality sensing device body;
3) closing the vacuum pump 63 and related valves, opening the hand valve I13, and detecting the temperature and pressure data of the GIS air chamber 1;
4) opening a valve of a pure gas bottle 35, adjusting the pressure to a proper amount through a pressure reducing valve 34, and opening a related valve to charge the GIS gas chamber 1;
5) closing an inflation valve, finishing the inflation process, obtaining the mass of sulfur hexafluoride gas filled in the GIS gas chamber 1 through a digital mass flow controller, and measuring the temperature and pressure data of the inflated GIS gas chamber 1;
6) and according to the obtained data, the data acquisition and analysis system 2 calculates and obtains the total gas amount of the GIS gas chamber 1 measured in the inflation stage, and closes all valves.
The flow of the inflation phase measurement is shown in fig. 2.
2. Outgassing measurement
1) Opening a hand valve I13, and detecting temperature and pressure data of the GIS air chamber 1;
2) closing the first hand valve 13, opening a valve of the air storage tank 43, and detecting temperature and pressure data of the air storage tank 43;
3) opening the hand valve I13, deflating the GIS air chamber 1 until the pressure is balanced, and measuring the temperature and pressure data of the deflated GIS air chamber 1;
4) acquiring the mass of sulfur hexafluoride gas discharged from the GIS gas chamber 1 through a digital mass flow controller;
5) according to the obtained data, the data acquisition and analysis system 2 calculates and obtains the total gas amount of the GIS gas chamber 1 measured in the gas release stage, and closes all valves;
6) after the measurement is finished, the valve of the waste gas recovery system 5 is opened, and all the gas in the gas storage tank 43 and the pipeline is recovered to the waste gas bottle 56 through the waste gas recovery system 5.
The deflation phase measurement flow is shown in fig. 3.
3. Complete the measurement
1) Taking the average value of the two measurement results of inflation and deflation as a final detection result;
2) and (5) recovering the initial state of the GIS air chamber 1, completing the measurement process and dismantling the quality sensing device body.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (10)
- The sulfur hexafluoride quality perception device in the GIS is characterized in that: the device comprises a quality sensing device body communicated with a GIS air chamber (1) through a pipeline, wherein the quality sensing device body comprises a data acquisition and analysis system (2) connected with the GIS air chamber (1), the data acquisition and analysis system (2) is respectively communicated with an inflation system (3) and an deflation system (4), the deflation system (4) is communicated with a waste gas recovery system (5), and the pipeline is communicated with a vacuum pumping system (6).
- 2. The device for sensing the quality of sulfur hexafluoride in a GIS according to claim 1, wherein: the GIS air chamber (1) is connected with a first pipeline (11), and a densimeter (12), a hand valve I (13) and a pressure gauge (14) are arranged on the first pipeline (11); the other end of the first pipeline (11) is connected with the data acquisition and analysis system (2).
- 3. The device for sensing the quality of sulfur hexafluoride in a GIS according to claim 2, wherein: the data acquisition and analysis system (2) comprises a second pipeline (21) communicated with the first pipeline (11), a mass flow controller (22), a temperature sensor (23) and a pressure sensor (24) are arranged on the second pipeline (21), the mass flow controller (22), the temperature sensor (23) and the pressure sensor (24) are all connected with a monitoring terminal (25), and the other end of the second pipeline (21) is communicated with the inflation system (3), the deflation system (4) and the vacuum pumping system (6) respectively.
- 4. The device for sensing the quality of sulfur hexafluoride within a GIS according to claim 3, wherein: the inflation system (3) comprises a third pipeline (31) communicated with the second pipeline (21), a first electromagnetic valve (32), a second hand valve (33) and a pressure reducing valve (34) are arranged on the third pipeline (31), and the pressure reducing valve (34) is connected with a pure gas bottle (35).
- 5. The device for sensing the quality of sulfur hexafluoride within a GIS according to claim 4, wherein: the air bleeding system (4) comprises a fourth pipeline (41) communicated with the second pipeline (21), a second electromagnetic valve (42) is arranged on the fourth pipeline (41), the other end of the fourth pipeline (41) is connected with an air storage tank (43), and the air storage tank (43) is communicated with the waste gas recovery system (5).
- 6. The device for sensing the quality of sulfur hexafluoride within a GIS according to claim 5, wherein: the vacuumizing system (6) comprises a fifth pipeline (61) communicated with the second pipeline (21), a third electromagnetic valve (62) and a vacuum pump (63) are arranged on the fifth pipeline (61), a sixth pipeline (64) is connected to the fifth pipeline (61) between the third electromagnetic valve (62) and the vacuum pump (63), and a fourth electromagnetic valve (65) and a vacuum gauge (66) are arranged on the sixth pipeline (64).
- 7. The device for sensing the quality of sulfur hexafluoride within a GIS according to claim 6, wherein: the waste gas recovery system (5) comprises a seventh pipeline (51) connected to the gas storage tank (43), a flow regulating valve (52), a buffer tank (53), a compressor (54), a heat exchanger (55) and a waste gas bottle (56) are sequentially arranged on the seventh pipeline (51), and a fifth electromagnetic valve (57) is connected between the compressor (54) and the heat exchanger (55) in parallel.
- 8. The device for sensing the quality of sulfur hexafluoride in a GIS according to claim 7, wherein: the heat exchanger (55) is connected with a refrigerating machine (58).
- 9. The device for sensing the quality of sulfur hexafluoride within a GIS according to claim 3, wherein: the mass flow controller (22) is a digital mass flow controller.
- 10. The device for sensing the quality of sulfur hexafluoride within a GIS according to claim 4, wherein: the waste gas recovery system (5) is connected with a purification system, and the purification system is connected with the pure gas cylinder (35).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566937A (en) * | 2021-07-12 | 2021-10-29 | 国网安徽省电力有限公司电力科学研究院 | Sulfur hexafluoride gas weight measurement system and gas weighing device |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566937A (en) * | 2021-07-12 | 2021-10-29 | 国网安徽省电力有限公司电力科学研究院 | Sulfur hexafluoride gas weight measurement system and gas weighing device |
| CN113566937B (en) * | 2021-07-12 | 2023-11-28 | 国网安徽省电力有限公司电力科学研究院 | Sulfur hexafluoride gas weight measurement system and gas weighing device |
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