CN105758990B - A kind of calibration system for being used for SF6 gas micro water content detectors in GIS - Google Patents
A kind of calibration system for being used for SF6 gas micro water content detectors in GIS Download PDFInfo
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- CN105758990B CN105758990B CN201410787260.8A CN201410787260A CN105758990B CN 105758990 B CN105758990 B CN 105758990B CN 201410787260 A CN201410787260 A CN 201410787260A CN 105758990 B CN105758990 B CN 105758990B
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- water content
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 230000001502 supplementing effect Effects 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 84
- 238000001914 filtration Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010292 electrical insulation Methods 0.000 abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The present invention provides a kind of for SF in GIS6The calibration system of gas micro water content detector, including SF is connected respectively6The micro- water of gas detects the branch road one and branch road two of special air chamber, the SF in branch road one6The micro- water of gas detects one end connection demarcating module of special air chamber, other end connection gas supplementing opening；SF in branch road two6The both ends that the micro- water of gas detects special air chamber are connected with gas micro water content adjustment module and pressure control module and form loop respectively.Compared to the prior art, provided by the present invention for SF in GIS6The calibration system of gas micro water content detector, demarcation accuracy rate are 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 are got well and ensure that whole GIS operational efficiency and security.
Description
Technical field
It is in particular to a kind of to be used for SF in GIS the present invention relates to electrical engineering field6Gas micro water content detector
Calibration system.
Background technology
With rapid economic development, power system capacity drastically expands, for the SF in GIS6Electrical equipment uses model
Enclose also more and more extensive.And wherein SF6Moisture measurement in gas has become SF6Vital one in maintenance of electric device
Ring.For GIS, SF6The increase of moisture can significantly reduce its electrical insulation properties in gas, have influence on power equipment
Safe operation, and be used to detect SF6The precision height of the detection device of moisture, then determine SF in gas6Gas reclaimed water
Divide the accuracy of content, and then influence whole GIS operational efficiency and security.
It is and existing for measuring SF in GIS6One of the key problem of measuring instrument of micro-water content be：For measuring
Instrument brand it is various, principle is different, and spread in performance is uneven, as Subscriber Unit it is difficult to hold the standard of these Instrumental results
True property.
To solve the above problems, measuring instrument is demarcated by the way of manually estimating more, but such a demarcation mode
Accuracy rate is low and time-consuming, can not meet in GIS to SF6The requirement of the precision of gas micro water content measuring instrument.
And for following SF6For the bigger GIS of electrical equipment usage amount demand, above mentioned problem will be protruded more.In addition,
With the continuous development of power network, the demand of GIS engineering constructions is also increasing, therefore, how to design a kind of can be used in GIS
SF6The calibration system of gas micro water content detector, to demarcate SF in GIS6The precision of the measuring instrument of gas micro water content, it is
This area technical problem urgently to be resolved hurrily.
The content 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 mark
Determining system, the moisture in itself air accumulator can be adjusted, and obtain standard micro-water content data, and micro- by standard of comparison
Water content measuring instrument and micro- water detector to be calibrated, draw for detecting SF6Micro- water inspection to be calibrated of gas micro water content
Whether accurate the precision for surveying instrument is；The demarcation accuracy rate of this calibration system is high, it is ensured that detected SF6Micro- water detector of gas
Precision so that the SF after micro- water detector detects and rebuilds6The electrical insulation properties of electrical equipment are got well and ensure that
Whole GIS operational efficiency and security.
One kind is used for SF in GIS6The calibration system of gas micro water content detector, the calibration system are to be measured for demarcating
Micro-water content measuring instrument, the system include connecting SF respectively6The micro- water of gas detects the branch road one and branch road two of special air chamber, institute
State the SF in branch road one6The micro- water of gas detects one end connection demarcating module of special air chamber, other end connection gas supplementing opening；Institute
State the SF in branch road two6The micro- water of gas detect the both ends of special air chamber respectively with gas micro water content adjustment module and pressure
Control module connects and forms loop.
Preferably, the demarcating module includes the micro-water content measuring instrument to be measured and standard micro-water content measurement in parallel
Instrument, the connection end of the micro-water content measuring instrument to be measured and the connection end of the standard micro-water content measuring instrument are equipped with manually
Valve.
Preferably, the gas micro water content adjustment module includes water inlet in parallel and filtration system, the water inlet
Both ends be equipped with hand-operated valve, the both ends of the filtration system are equipped with magnetic valve.
Preferably, the filtration system includes the device for drying and filtering and dirt filter of series connection.
Preferably, the pressure control module include be sequentially connected pressure-reducing valve, dirt filter, first pressure controller,
Compressor and second pressure controller.
Preferably, air gauge, the second pressure controller and institute are provided between the dirt filter and the compressor
State and be provided with safety valve between compressor.
Preferably, the demarcating module in the branch road one and the SF6The micro- water of gas detects special air chamber, described
SF6The micro- water of gas detects and is equipped with hand-operated valve between special air chamber and the gas supplementing opening.
Preferably, the gas micro water content adjustment module in the branch road two and the SF6The micro- water detection of gas is special
With air chamber, the SF6The micro- water of gas detects and is equipped with magnetic valve between special air chamber and the pressure control module.
Preferably, the SF6The micro- water of gas detects and is connected with air gauge and safety valve on special air chamber.
It can be seen from the above technical scheme that the invention provides one kind to be used for SF in GIS6Gas micro water content detects
The calibration system of instrument, calibration system include connecting SF respectively6The micro- water of gas detects the branch road one and branch road two of special air chamber, passes through
The SF in branch road one6The micro- water of gas detects one end connection demarcating module of special air chamber, other end connection gas supplementing opening；With
And the SF in branch road two6The micro- water of gas detect the both ends of special air chamber respectively with gas micro water content adjustment module and pressure control
Molding block connects and forms loop.The calibration system is adjusted to the moisture in itself air accumulator, obtains 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 SF6
Whether 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 rebuilds6Electrically
The electrical insulation properties of equipment are got well and ensure that whole GIS operational efficiency and security.
With immediate prior art ratio, technical scheme provided by the invention has following excellent effect：
1st, technical scheme provided by the invention, by the micro- water of SF6 gases detect special air chamber one end connect demarcating module,
The other end connects gas supplementing opening, and the micro- water of SF6 gases detect the both ends of special air chamber respectively with gas micro water content adjustment module
Connected with pressure control module and form loop, realize that the moisture in itself air accumulator is adjusted calibration system, so as to
The data of standard are enough obtained, and by standard of comparison micro-water content measuring instrument and micro- water detector to be calibrated, are drawn for examining
Survey 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 ensure that detected SF6The precision of micro- water detector of gas, so that the SF after micro- water detector detects and rebuilds6
The electrical insulation properties of electrical equipment are got well and ensure that whole GIS operational efficiency and security.
2nd, technical scheme provided by the invention, by demarcating module, gas supplementing opening, gas micro water content adjustment module and pressure control
The calibration system of molding block composition, the participation of whole oil-free in its calibration process, therefore the problem of avoid secondary pollution.
3rd, technical scheme provided by the invention, by demarcating module, gas supplementing opening, gas micro water content adjustment module and pressure control
Molding block composition and the calibration system that is participated in without large-scale device, its is simple in construction, small power consumption and noise is low.
4th, technical scheme provided by the invention, the design of hand-operated valve and magnetic valve in calibration system so that calibration system
Operation is simple, and saves the time cost of operation.
5th, technical scheme provided by the invention, is widely used, and has significant Social benefit and economic benefit.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description briefly to introduce, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is 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 road one, 102-branch road two, 103-calibration mold
Block, 104-pressure control module, 105-gas micro water content adjustment module, 2-air gauge, 3-safety valve, 4-hand-operated valve,
5-polishing mouth, 6-magnetic valve, 7-magnetic valve, 8-dirt filter, 9-device for drying and filtering, 10-magnetic valve, 11-manually
Valve, 12-hand-operated valve, 13-water inlet, 14-hand-operated valve, 15-compressor, 16-safety valve, 17-dirt filter, 18-
Air gauge, 19-second pressure controller, 20-first pressure controller, 21-pressure-reducing valve, 22-magnetic valve, 23-manually
Valve, 24-hand-operated valve, 25-hand-operated valve, 26-micrometer water gaging instrument to be checked, the micro- water gaging instrument of 27-standard.
Embodiment
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 carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiments of the invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of protection of the invention.
As shown in figure 1, it is used for SF in GIS in the present invention6The calibration system of gas micro water content detector includes connecting respectively
Meet SF6The micro- water of gas detects the branch road 1 and branch road 2 102 of special air chamber 1, in SF6The micro- water of gas is detected on special air chamber 1
It is connected with air gauge 2 and safety valve 3；SF in branch road 16One end that the micro- water of gas detects special air chamber 1 is connected with mark
Cover half block 103, other end connection gas supplementing opening 5；SF in branch road 2 1026The micro- water of gas detect the both ends of special air chamber 1 respectively with
Gas micro water content adjustment module 105 and pressure control module 104 connect and form loop.
Wherein, demarcating module 103 includes micro-water content measuring instrument 26 and standard micro-water content measuring instrument 27 to be measured in parallel,
The connection end of micro-water content measuring instrument 26 to be measured and the standard micro-water content measuring instrument 27 is equipped with hand-operated valve 24,25；
Gas micro water content adjustment module 105 is equipped with the water inlet 13 of hand-operated valve 14,11 including both ends and both ends are all provided with
There is the filtration system of magnetic valve 10,7, water inlet 13 and filtration system are connected in parallel, and water inlet is also hand-operated valve 12 in itself, mistake
Filter system includes the device for drying and filtering 9 and dirt filter 8 of series connection.
Pressure control module 104 include be sequentially connected pressure-reducing valve 21, dirt filter 17, first pressure controller 20, pressure
Contracting machine 15 and second pressure controller 19；Air gauge 18, second pressure controller are provided between dirt filter 17 and compressor 15
Safety valve 16 is provided between 19 and compressor 15.
Wherein, the SF in branch road 16The micro- water of gas detects and is provided with hand-operated valve between special air chamber 1 and demarcating module 103
23 and hand-operated valve 4 is provided between gas supplementing opening 5；SF in branch road 2 1026It is micro- that the micro- water of gas detects special air chamber 1 and gas
Magnetic valve 6 is provided between water content adjustment module 105 and magnetic valve 22 is provided between pressure control module 104.
High Purity Nitrogen has been filled with during use during the calibration system of the present invention, when being dispatched from the factory due to this equipment in system to pressure-fired,
Therefore during normal use, it is necessary to device itself is vacuumized first, that is, is first turned on hand-operated valve 4 by the High Purity Nitrogen in system
Gas is discharged into air.Then external vavuum pump is connected into gas supplementing opening 5, magnetic valve 6,7 and 10,22 is pressed after opening hand-operated valve 11,14
Button, start vavuum pump, the gas in system is extracted out.After observation vacuum reaches requirement, vavuum pump and all valves are closed,
Carry out the next step tonifying Qi stage.
The tonifying Qi stage is by SF6Steel cylinder is connected to gas supplementing opening 5 by pressure-reducing valve 21 and connecting tube.Hand-operated valve 4 is opened, slowly
Cylinder valve is opened, pressure-reducing valve 21 is adjusted, then by SF6Slowly it is filled with SF6The micro- water of gas observes pressure after detecting special air chamber 1
The pressure of table 2, after it reaches requirement (0.4MPa~0.5MPa), hand-operated valve 4 and cylinder valve are closed, carry out regulation gas in next step
Body moisture.
When adjusting measurement of moisture content of gas, if moisturizing content, hand-operated valve 12 is opened, is instilled in right amount from water inlet 13
Water, close hand-operated valve 12.Hand-operated valve 11,14 is opened, magnetic valve 6,22 and the button of compressor 15 is pressed, gas circulation is flowed through dirt
After the certain time of filter 17, closing hand-operated valve 11,14, magnetic valve 6,22 and compressor 15.
If reducing moisture, magnetic valve 7,10 and 6,22 is pressed, the button of compressor 15, makes gas circulation excessively dried
Filter 9 and dirt filter 8, after 17 certain times, close magnetic valve 11,14,6,22 and compressor 15.
After regulation measurement of moisture content of gas terminates, SF is detected6The precision of on-line checking instrument, that is, confirm to treat micrometer water gaging instrument
26 and after the micro- water gaging instrument 27 of standard connects, hand-operated valve 23,24,25, the reading of observation caliber measuring instrument 27 are opened, micrometer is treated in judgement
Whether the reading of water gaging instrument 26 is accurate.
During calibration system use, it should be noted and maintenance is carried out to device：(1) device and environment should keep clear
It is clean；(2) drier has certain water adsorption capacity, reaches or should be changed in time close to saturation state, in order to avoid influence drying effect；
(3) by the unlatching flexibility of regulation periodic check safety valve；(4) by regulation periodic check pressure gauge；(5) present apparatus is before dispatching from the factory
Air-tight test had been done, but due to a variety of causes, in use for some time, periodically to have done leakage check.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, although with reference to above-described embodiment pair
The present invention is described in detail, and those of ordinary skill in the art can still enter to the embodiment of the present invention
Row modification or equivalent substitution, and these are without departing from any modification of spirit and scope of the invention or equivalent substitution, it exists
Apply within pending claims of the invention.
Claims (8)
1. a kind of calibration system for being used for SF6 gas micro water content detectors in GIS, the calibration system treat micrometer for demarcation
Water content measuring instrument, it is characterised in that the system includes connecting the He of branch road one that the micro- water of SF6 gases detects special air chamber respectively
Branch road two,
The micro- water of the SF6 gases in the branch road one detects one end connection demarcating module of special air chamber, other end connection is mended
Gas port；
The micro- water of SF6 gases in the branch road two detect the both ends of special air chamber respectively with gas micro water content adjustment module
Connected with pressure control module and form loop；
In the calibration system, the micro- water of SF6 gases detects and is connected with air gauge and safety valve on special air chamber.
2. calibration system as claimed in claim 1, it is characterised in that the demarcating module includes the described of parallel connection and treats micrometer water
Content measuring instrument and standard micro-water content measuring instrument, the connection end of the micro-water content measuring instrument to be measured and the micro- water of the standard contain
The connection end of flowmeter is equipped with hand-operated valve.
3. calibration system as claimed in claim 1, it is characterised in that the gas micro water content adjustment module includes in parallel
Water inlet and filtration system, the both ends of the water inlet are equipped with hand-operated valve, and the both ends of the filtration system are equipped with magnetic valve.
4. calibration system as claimed in claim 3, it is characterised in that the filtration system include series connection device for drying and filtering and
Dirt filter.
5. calibration system as claimed in claim 1, it is characterised in that pressure-reducing valve of the pressure control module including connection,
Dirt filter, first pressure controller, compressor and second pressure controller.
6. calibration system as claimed in claim 5, it is characterised in that gas is provided between the dirt filter and the compressor
Table is pressed, safety valve is provided between the second pressure controller and the compressor.
7. calibration system as claimed in claim 1, it is characterised in that the demarcating module in the branch road one and described
The micro- water of SF6 gases detects to be equipped with manually between the micro- water special air chamber of detection of special air chamber, the SF6 gases and the gas supplementing opening
Valve.
8. calibration system as claimed in claim 1, it is characterised in that the gas micro water content regulation in the branch road two
Module and the micro- water of the SF6 gases detect the micro- water of special air chamber, the SF6 gases and detect special air chamber and the Stress control mould
Magnetic valve is equipped between block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN105758990A CN105758990A (en) | 2016-07-13 |
| CN105758990B true CN105758990B (en) | 2018-01-19 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN108254417B (en) * | 2018-01-04 | 2020-11-27 | 广东美的制冷设备有限公司 | Air detection device, air quality detection method, and computer-readable storage medium |
| CN109248545B (en) * | 2018-09-27 | 2021-04-09 | 国网新疆电力有限公司和田供电公司 | Micro-water treatment system for combined transformer 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 |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88211603U (en) * | 1988-04-07 | 1988-12-28 | 中国科学院上海冶金研究所 | Calibrating apparatus of dynamic humidity |
| CN1498345A (en) * | 2002-01-30 | 2004-05-19 | �й�ʯ�ͻ����ɷ�����˾ | Method and device for calibrating humidity sensor and sensor arrangement comprising humidity sensor that can be calibrated |
| CN101936939A (en) * | 2010-08-12 | 2011-01-05 | 重庆大学 | Saturated saline solution method for humidity calibration of humidity sensitive element for measuring micro-water contained in SF6 gas and device thereof |
| CN101949747A (en) * | 2010-09-03 | 2011-01-19 | 兰州交通大学 | Calibration measuring system and measuring method of dynamic response characteristic of humidity sensing element |
| CN201828554U (en) * | 2010-06-29 | 2011-05-11 | 河南省电力公司商丘供电公司 | Comprehensive evaluation device for sulfur hexafluoride electrical equipment |
| CN102169113A (en) * | 2011-01-19 | 2011-08-31 | 四川电力科学研究院 | Verifying device and method for online sulfur hexafluoride hygrometer |
| 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 |
| CN204007679U (en) * | 2014-07-15 | 2014-12-10 | 国家电网公司 | A kind of band is depressed the verification platform of sulfur hexafluoride gas humidity sensor |
| CN204241462U (en) * | 2014-12-17 | 2015-04-01 | 国家电网公司 | A kind of for SF in GIS 6the calibration system of gas micro water content detector |
-
2014
- 2014-12-17 CN CN201410787260.8A patent/CN105758990B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88211603U (en) * | 1988-04-07 | 1988-12-28 | 中国科学院上海冶金研究所 | Calibrating apparatus of dynamic humidity |
| CN1498345A (en) * | 2002-01-30 | 2004-05-19 | �й�ʯ�ͻ����ɷ�����˾ | Method and device for calibrating humidity sensor and sensor arrangement comprising humidity sensor that can be calibrated |
| CN201828554U (en) * | 2010-06-29 | 2011-05-11 | 河南省电力公司商丘供电公司 | Comprehensive evaluation device for sulfur hexafluoride electrical equipment |
| CN101936939A (en) * | 2010-08-12 | 2011-01-05 | 重庆大学 | Saturated saline solution method for humidity calibration of humidity sensitive element for measuring micro-water contained in SF6 gas and device thereof |
| CN101949747A (en) * | 2010-09-03 | 2011-01-19 | 兰州交通大学 | Calibration measuring system and measuring method of dynamic response characteristic of humidity sensing element |
| CN102169113A (en) * | 2011-01-19 | 2011-08-31 | 四川电力科学研究院 | Verifying device and method for online sulfur hexafluoride hygrometer |
| 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 |
| CN204007679U (en) * | 2014-07-15 | 2014-12-10 | 国家电网公司 | A kind of band is depressed the verification platform of sulfur hexafluoride gas humidity sensor |
| CN204241462U (en) * | 2014-12-17 | 2015-04-01 | 国家电网公司 | A kind of for SF in GIS 6the calibration system of gas micro water content detector |
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