CN105758990A - Calibration system used for SF6 gas micro-water content detector in GIS - Google Patents
Calibration system used for SF6 gas micro-water content detector in GIS Download PDFInfo
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- CN105758990A CN105758990A CN201410787260.8A CN201410787260A CN105758990A CN 105758990 A CN105758990 A CN 105758990A CN 201410787260 A CN201410787260 A CN 201410787260A CN 105758990 A CN105758990 A CN 105758990A
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Abstract
The present invention provides a calibration system used for a SF6 gas micro-water content detector in GIS, the calibration system includes a branch I and a branch II, the branch I and the branch II are respectively connected with a SF6 gas micro-water content detection special gas chamber, in the branch I, one end of the SF6 gas micro-water content detection special gas chamber is connected with a calibration module, the other end of the SF6 gas micro-water content detection special gas chamber is connected with a gas supplementing port, and in the branch II, both ends of the SF6 gas micro-water content detection special gas chamber are respectively connected with a gas micro-water content regulation module and a pressure control module to form a loop. Compared with the prior art, the calibration system used for the SF6 gas micro-water content detector in the GIS has high calibration accuracy, and ensures the accuracy of the to-be-tested SF6 gas micro-water content detector, so that electrical insulation properties of repaired SF6 electrical equipment which is detected by the micro-water content detector are good, and the entire GIS operational efficiency and safety can be ensured.
Description
Technical field
The present invention relates to electrical engineering field, in particular to one for SF in GIS6The calibration system of gas micro water content detector.
Background technology
Along with rapid economic development, power system capacity sharply expands, for the SF in GIS6The use scope of electrical equipment is also more and more extensive.And wherein SF6Moisture measurement in gas has become as SF6A vital ring in maintenance of electric device.For GIS, SF6In gas, the increase of moisture can significantly reduce its electrical insulation properties, has influence on the safe operation of power equipment, and is used for detecting SF6In gas, the precision height of the detection equipment of moisture, then determine SF6The accuracy of moisture in gas, and then affect operational efficiency and the safety of whole GIS.
And it is existing for measuring SF in GIS6One of the key problem measuring instrument of micro-water content be: the instrument brand for measuring is various, and principle is different, and spread in performance is uneven, is difficult to hold the accuracy of these Instrumental results as Subscriber Unit.
For solving the problems referred to above, the mode that many employings are manually estimated is demarcated measuring instrument, but this kind is demarcated, and mode accuracy rate is low and length consuming time, it is impossible to meet in GIS SF6Gas micro water content measures the requirement of the precision of instrument.
And for following SF6Electrical equipment makes the GIS that consumption demand is bigger, and the problems referred to above will be more prominent.Additionally, along with the development of electrical network, the demand of GIS engineering construction is also increasing, therefore, how to design one and can be used for SF in GIS6The calibration system of gas micro water content detector, demarcates SF in GIS6The precision measuring instrument of gas micro water content, is this area technical problem urgently to be resolved hurrily.
Summary of the invention
In view of this, the present invention provides a kind of for SF in GIS6The calibration system of gas micro water content detector, the moisture in self air accumulator can be adjusted by this calibration system, obtains standard micro-water content data, and by standard of comparison micro-water content measuring instrument and micro-water detector to be calibrated, draws for detecting SF6Whether accurate the precision of micro-water detector to be calibrated of gas micro water content is；The demarcation accuracy rate of this calibration system is high, it is ensured that detected SF6The precision of micro-water detector of gas, so that the SF after micro-water detector detects and rebuilds6The electrical insulation properties of electrical equipment is got well and ensure that operational efficiency and the safety of whole GIS.
A kind of for SF in GIS6The calibration system of gas micro water content detector, described calibration system is used for demarcating micro-water content measuring instrument to be measured, and described system includes connecting respectively SF6The micro-water of gas detects branch road one and branch road two, the described SF in described branch road one of special air chamber6The micro-water of gas detects one end of special air chamber and connects demarcating module, other end connection gas supplementing opening；Described SF in described branch road two6The micro-water of gas detects the two ends of special air chamber and is connected with gas micro water content adjustment module and pressure control module respectively and forms loop.
Preferably, described demarcating module include parallel connection micro-water content measuring instrument described to be measured and standard micro-water content measuring instrument, the link of described micro-water content measuring instrument to be measured and the link of described standard micro-water content measuring instrument be equipped with hand-operated valve.
Preferably, described gas micro water content adjustment module includes water inlet and the filtration system of parallel connection, and the two ends of described water inlet are equipped with hand-operated valve, and the two ends of described filtration system are equipped with electromagnetic valve.
Preferably, described filtration system includes device for drying and filtering and the dirt filter of series connection.
Preferably, described pressure control module includes the air relief valve, dirt filter, the first pressure controller, compressor and the second pressure controller that are sequentially connected with.
Preferably, it is provided with air gauge between described dirt filter and described compressor, between described second pressure controller and described compressor, is provided with relief valve.
Preferably, the described demarcating module in described branch road one and described SF6Gas micro-water detection special air chamber, described SF6The micro-water of gas detects and is equipped with hand-operated valve between special air chamber and described gas supplementing opening.
Preferably, the described gas micro water content adjustment module in described branch road two and described SF6Gas micro-water detection special air chamber, described SF6The micro-water of gas detects and is equipped with electromagnetic valve between special air chamber and described pressure control module.
Preferably, described SF6The micro-water of gas detects and is connected to air gauge and relief valve on special air chamber.
From above-mentioned technical scheme it can be seen that the invention provides a kind of for SF GIS6The calibration system of gas micro water content detector, calibration system includes connecting respectively SF6The micro-water of gas detects branch road one and the branch road two of special air chamber, by the described SF in branch road one6The micro-water of gas detects one end of special air chamber and connects demarcating module, other end connection gas supplementing opening；And the SF in branch road two6The micro-water of gas detects the two ends of special air chamber and is connected with gas micro water content adjustment module and pressure control module respectively and forms loop.Moisture in self air accumulator can be adjusted by this calibration system, obtain standard micro-water content data, and by standard of comparison micro-water content measuring instrument and micro-water detector to be calibrated, draw for detecting SF6Whether accurate the precision of micro-water detector to be calibrated of gas micro water content is；The demarcation accuracy rate of this calibration system is high, it is ensured that detected SF6The precision of micro-water detector of gas, so that the SF after micro-water detector detects and rebuilds6The electrical insulation properties of electrical equipment is got well and ensure that operational efficiency and the safety of whole GIS.
With immediate prior art ratio, technical scheme provided by the invention has following excellent effect:
1, technical scheme provided by the invention, the one end being detected special air chamber by the micro-water of SF6 gas connects demarcating module, other end connection gas supplementing opening, and be connected with gas micro water content adjustment module and pressure control module respectively at the two ends of SF6 gas micro-water special air chamber of detection and form loop, realize calibration system the moisture in self air accumulator is adjusted, it is thus possible to the data of the standard of acquisition, and by standard of comparison micro-water content measuring instrument and micro-water detector to be calibrated, draw for detecting SF6Whether accurate the precision of micro-water detector to be calibrated of gas micro water content is；The demarcation accuracy rate of this calibration system is high, it is ensured that detected SF6The precision of micro-water detector of gas, so that the SF after micro-water detector detects and rebuilds6The electrical insulation properties of electrical equipment is got well and ensure that operational efficiency and the safety of whole GIS.
2, technical scheme provided by the invention, the calibration system being made up of demarcating module, gas supplementing opening, gas micro water content adjustment module and pressure control module, the participation of omnidistance oil-free, the problem therefore avoiding secondary pollution in its calibration process.
3, technical scheme provided by the invention, by demarcating module, gas supplementing opening, gas micro water content adjustment module and calibration system that is that pressure control module forms and that participate in without large-scale device, its simple in construction, power consumption is little and noise is low.
4, technical scheme provided by the invention, the design of hand-operated valve and electromagnetic valve in calibration system so that the operation of calibration system is simple and easy, and saves the time cost of operation.
5, technical scheme provided by the invention, is widely used, and has significant Social benefit and economic benefit.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be introduced briefly below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 be the present invention for SF in GIS6The structural representation of the calibration system of gas micro water content detector.
Wherein, 1 SF6The micro-water of gas detects special air chamber, 101 branch roads one, 102 branch roads two, 103 demarcating modules, 104 pressure control module, 105 gas micro water content adjustment modules, 2 air gauges, 3 relief valve, 4 hand-operated valves, 5 polishing mouths, 6 electromagnetic valves, 7 electromagnetic valves, 8 dirt filters, 9 devices for drying and filtering, 10 electromagnetic valves, 11 hand-operated valves, 12 hand-operated valves, 13 water inlets, 14 hand-operated valves, 15 compressors, 16 relief valve, 17 dirt filters, 18 air gauges, 19 second pressure controllers, 20 first pressure controllers, 21 air relief valve, 22 electromagnetic valves, 23 hand-operated valves, 24 hand-operated valves, 25 hand-operated valves, 26 micrometer water gaging instrument to be checked, the 27 micro-water gaging instrument of standard.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
As it is shown in figure 1, for SF in GIS in the present invention6The calibration system of gas micro water content detector includes connecting respectively SF6The micro-water of gas detects branch road 1 and the branch road 2 102 of special air chamber 1, at SF6The micro-water of gas detects and is connected to air gauge 2 and relief valve 3 on special air chamber 1；SF in branch road 16The micro-water of gas detects one end of special air chamber 1 and is connected to demarcating module 103, other end connection gas supplementing opening 5；SF in branch road 2 1026The micro-water of gas detects the two ends of special air chamber 1 and is connected with gas micro water content adjustment module 105 and pressure control module 104 respectively and forms loop.
Wherein, demarcating module 103 includes micro-water content measuring instrument 26 to be measured and the standard micro-water content measuring instrument 27 of parallel connection, and the link of micro-water content measuring instrument 26 to be measured and described standard micro-water content measuring instrument 27 is equipped with hand-operated valve 24,25；
Gas micro water content adjustment module 105 includes two ends and is equipped with the water inlet 13 of hand-operated valve 14,11 and two ends are equipped with the filtration system of electromagnetic valve 10,7, water inlet 13 and filtration system are connected in parallel, water inlet itself is also hand-operated valve 12, and filtration system includes device for drying and filtering 9 and the dirt filter 8 of series connection.
Pressure control module 104 includes the air relief valve 21, dirt filter the 17, first pressure controller 20, compressor 15 and the second pressure controller 19 that are sequentially connected with；It is provided with air gauge 18 between dirt filter 17 and compressor 15, between the second pressure controller 19 and compressor 15, is provided with relief valve 16.
Wherein, the SF in branch road 16The micro-water of gas detect be provided with between special air chamber 1 and demarcating module 103 hand-operated valve 23 and and gas supplementing opening 5 between be provided with hand-operated valve 4；SF in branch road 2 1026The micro-water of gas detect be provided with between special air chamber 1 and gas micro water content adjustment module 105 electromagnetic valve 6 and and pressure control module 104 between be provided with electromagnetic valve 22.
During use during the calibration system of the present invention, owing to system when this equipment dispatches from the factory being filled with High Purity Nitrogen to pressure-fired, when therefore normally using, it is necessary to first device self is carried out evacuation, namely it is first turned on hand-operated valve 4 and the high pure nitrogen in system is entered air.Then external vacuum pump is connected gas supplementing opening 5, after opening hand-operated valve 11,14, press electromagnetic valve 6,7 and 10,22 buttons, start vacuum pump, the gas in system is extracted out.Observation vacuum is closed vacuum pump and all valves, is carried out next step QI invigorating stage after reaching requirement.
The QI invigorating stage is by SF6Steel cylinder is connected to gas supplementing opening 5 by air relief valve 21 and connecting tube.Open hand-operated valve 4, slowly open cylinder valve, regulate air relief valve 21, then by SF6Slowly it is filled with SF6The micro-water of gas observes Pressure gauge 2 pressure after detecting special air chamber 1, after it reaches requirement (0.4MPa～0.5MPa), closes hand-operated valve 4 and cylinder valve, carries out next step and regulates measurement of moisture content of gas.
When regulating measurement of moisture content of gas, if moisturizing content, then opening hand-operated valve 12, instilling suitable quantity of water from water inlet 13, close hand-operated valve 12.Open hand-operated valve 11,14, press electromagnetic valve 6,22 and compressor 15 button, after making gas be circulated through dirt filter 17 certain time, close hand-operated valve 11,14, electromagnetic valve 6,22 and compressor 15.
If minimizing moisture, press electromagnetic valve 7,10 and 6,22, compressor 15 button, make gas be circulated throughout device for drying and filtering 9 and after dirt filter 8,17 certain time, close electromagnetic valve 11,14,6,22 and compressor 15.
Adjustment measurement of moisture content of gas detects SF after terminating6The precision of on-line checking instrument, namely confirms, after the micro-water gaging instrument 27 of micrometer water gaging instrument 26 and standard connects, to open hand-operated valve 23,24,25, observation caliber measuring instrument 27 reading, it is judged that treat that whether micrometer water gaging instrument 26 reading is accurate.
In calibration system use procedure, should be noted and device is carried out maintenance: (1) device and environment should keep cleaning；(2) desiccant has certain water absorbability, reaches or should change in time close to saturation, in order to avoid affecting drying effect；(3) by the unlatching motility of regulation periodic check relief valve；(4) by regulation periodic check Pressure gauge；(5) this device had all done air-tight test before dispatching from the factory, but due to a variety of causes, in use for some time, will regularly do leakage check.
Above example is only in order to illustrate that technical scheme is not intended to limit; although the present invention being described in detail with reference to above-described embodiment; the specific embodiment of the present invention still can be modified or equivalent replacement by those of ordinary skill in the field; and these without departing from any amendment of spirit and scope of the invention or equivalent are replaced, within the claims of its present invention all awaited the reply in application.
Claims (9)
1. one kind is used for SF in GIS6The calibration system of gas micro water content detector, described calibration system is used for demarcating micro-water content measuring instrument to be measured, it is characterised in that described system includes connecting respectively SF6The micro-water of gas detects branch road one and the branch road two of special air chamber,
Described SF in described branch road one6The micro-water of gas detects one end of special air chamber and connects demarcating module, other end connection gas supplementing opening；
Described SF in described branch road two6The micro-water of gas detects the two ends of special air chamber and is connected with gas micro water content adjustment module and pressure control module respectively and forms loop.
2. calibration system as claimed in claim 1, it is characterized in that, described demarcating module includes micro-water content measuring instrument described to be measured in parallel and standard micro-water content measuring instrument, the link of described micro-water content measuring instrument to be measured and the link of described standard micro-water content measuring instrument are equipped with hand-operated valve.
3. calibration system as claimed in claim 1, it is characterised in that described gas micro water content adjustment module includes water inlet and the filtration system of parallel connection, and the two ends of described water inlet are equipped with hand-operated valve, and the two ends of described filtration system are equipped with electromagnetic valve.
4. calibration system as claimed in claim 3, it is characterised in that described filtration system includes device for drying and filtering and the dirt filter of series connection.
5. calibration system as claimed in claim 1, it is characterised in that described pressure control module includes the air relief valve, dirt filter, the first pressure controller, compressor and the second pressure controller that are sequentially connected with.
6. calibration system as claimed in claim 5, it is characterised in that be provided with air gauge between described dirt filter and described compressor, be provided with relief valve between described second pressure controller and described compressor.
7. calibration system as claimed in claim 1, it is characterised in that described demarcating module in described branch road one and described SF6Gas micro-water detection special air chamber, described SF6The micro-water of gas detects and is equipped with hand-operated valve between special air chamber and described gas supplementing opening.
8. calibration system as claimed in claim 1, it is characterised in that described gas micro water content adjustment module in described branch road two and described SF6Gas micro-water detection special air chamber, described SF6The micro-water of gas detects and is equipped with electromagnetic valve between special air chamber and described pressure control module.
9. calibration system as claimed in claim 1, it is characterised in that described SF6The micro-water of gas detects and is connected to air gauge and relief valve on special air chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410787260.8A CN105758990B (en) | 2014-12-17 | 2014-12-17 | A kind of calibration system for being used for SF6 gas micro water content detectors in GIS |
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| CN201410787260.8A CN105758990B (en) | 2014-12-17 | 2014-12-17 | A kind of calibration system for being used for SF6 gas micro water content detectors in GIS |
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| CN105758990A true CN105758990A (en) | 2016-07-13 |
| CN105758990B CN105758990B (en) | 2018-01-19 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647605A (en) * | 2016-12-28 | 2017-05-10 | 国网江苏省电力公司检修分公司 | Intelligent gas supplementation and mini-amount water monitoring device for SF6 electrical equipment |
| CN108254417A (en) * | 2018-01-04 | 2018-07-06 | 广东美的制冷设备有限公司 | Air detecting device, Detection of Air Quality method and computer readable storage medium |
| CN109248545A (en) * | 2018-09-27 | 2019-01-22 | 国网新疆电力有限公司和田供电公司 | Micro- water treatment system for prefabricated substation |
| CN111389173A (en) * | 2020-03-31 | 2020-07-10 | 马鞍山钢铁股份有限公司 | SF6 moisture content excess online processing device |
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| CN109248545A (en) * | 2018-09-27 | 2019-01-22 | 国网新疆电力有限公司和田供电公司 | Micro- water treatment system for prefabricated substation |
| CN111389173A (en) * | 2020-03-31 | 2020-07-10 | 马鞍山钢铁股份有限公司 | SF6 moisture content excess online processing device |
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| CN105758990B (en) | 2018-01-19 |
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