CN202854298U - Sulphur hexafluoride inflatable circuit breaker insulation state on-line monitoring device - Google Patents
Sulphur hexafluoride inflatable circuit breaker insulation state on-line monitoring device Download PDFInfo
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- CN202854298U CN202854298U CN 201220585632 CN201220585632U CN202854298U CN 202854298 U CN202854298 U CN 202854298U CN 201220585632 CN201220585632 CN 201220585632 CN 201220585632 U CN201220585632 U CN 201220585632U CN 202854298 U CN202854298 U CN 202854298U
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- isolating switch
- sulfur hexafluoride
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Abstract
The utility model discloses a sulphur hexafluoride inflatable circuit breaker insulation state on-line monitoring device which comprises an SF6 inflatable circuit breaker (1). The SF6 inflatable circuit breaker (1) is connected with a gas circulation monitoring pipe (17). The gas circulation monitoring pipe (17) is connected in series with an intake air switch solenoid valve (6), an electrochemical and infrared sensing device (7), a return air switch solenoid valve (10) and a pressure pump (12). The electrochemical and infrared sensing device (7) is connected with a data acquisition unit (11), a control unit (13) and a display transmission unit (14). The control unit (13) is connected with the intake air switch solenoid valve (6), the return air switch solenoid valve (10) and the pressure pump (12). The sulphur hexafluoride inflatable circuit breaker insulation state on-line monitoring device provided by the utility model can carry out on-line monitoring on the SF6 circuit breaker, can monitor the purity and the decomposer condition of the SF6 in real time, can analyze the health condition of the SF6 circuit breaker, and can prevent SF6 circuit breaker faults.
Description
Technical field
The utility model relates to a kind of sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device, belongs to electrical network detection technique field.
Background technology
SF6 inflatable isolating switch at home electrical network put into operation in a large number at nearly 10 years, some problems occurred.For example two 800 pot type SF6 isolating switch major insulation faults occured in 2008 and 2009 in Ningxia power, and culprit is respectively insulated tension pole discharge explosion and bad ground short circuit fault and the serious scaling loss of switching-on resistance body of causing of insulated tension pole manufacturing process of isolating switch.The 220 kV Han Xi of Guangdong Power Grid company in 2010 become, Guizhou Power Grid 500 kV Kweiyang in 2012 become and circuit breaker failure also occured cause circuit and Generatrix cease accident, and the SF6 isolating switch of fault phase is carried out the gas composition test, have all found SO
2Analyte.Explicitly call for each minute province company all SF6 isolating switchs are carried out gas composition to detect take 3 years as the cycle at the beginning of the Southern Power Grid Company 2012 in new " the power equipment preventive trial rules " of promulgating, note abnormalities and in time process.The difficulty because the application of 500 kV transformer stations has a power failure, the prerun cycle in 3 years differs and in time finds surely the latency fault that exists in the isolating switch, Guizhou Power Test Institute is on the basis of successfully developing SF6 current transformer on-line monitoring system, operation characteristic for isolating switch, inherit the advantage of SF6 current transformer on-line monitoring method, further the method is improved, guaranteed after being connected with body, to propose under the complete hermetic condition SF6 circuit breaker gas the method for monitoring.
Summary of the invention
The technical problems to be solved in the utility model is: do not have a power failure and can detect SF6 isolating switch moderate purity and decomposition product SO
2The monitoring problem of content, but the sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device of the operation conditions of Real-Time Monitoring inflatable isolating switch can overcome the deficiencies in the prior art
The technical solution of the utility model is: sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device, it comprises the sulfur hexafluoride inflatable-type isolating switch, be connected with the gas circulation monitoring pipe at the sulfur hexafluoride inflatable-type isolating switch, be serially connected with the air inlet switch solenoid valve in the gas circulation monitoring pipe, galvanochemistry and infrared ray sensing equipment, return-air switch electromagnetic valve and force (forcing) pump, be connected with data acquisition unit in galvanochemistry and infrared ray sensing equipment, control module and demonstration transmission unit, control module while and air inlet switch solenoid valve, the return-air switch electromagnetic valve is connected with force (forcing) pump.
On the gas circulation monitoring pipe, the air inlet side of galvanochemistry and infrared ray sensing equipment is connected with reduction valve.
Be connected with the interface conversion threeway at the sulfur hexafluoride inflatable-type isolating switch, the gas outlet of gas circulation monitoring pipe is connected with the interface conversion threeway.
Being connected with screen pack and taking back the gas threeway in the gas circulation monitoring pipe. screen pack is positioned at the side of giving vent to anger of interface conversion threeway, takes back the side of giving vent to anger that the gas threeway is positioned at screen pack.
On the gas circulation monitoring pipe, the air inlet side of galvanochemistry and infrared ray sensing equipment is connected with and demarcates gas air inlet threeway, an interface demarcating gas air inlet threeway is connected with demarcation gas control hand valve processed.
Galvanochemistry and infrared ray sensing equipment are by SO
2Electrochemical sensor and SF6 infrared sensor consist of, and gas passes through first SO
2Electrochemical sensor passes through the SF6 infrared sensor again.
The steam output side of force (forcing) pump is connected with retaining valve on the gas circulation monitoring pipe, and the force (forcing) pump two ends are respectively equipped with and vacuumize connecting pipe on the gas circulation monitoring pipe, is connected with and vacuumizes hand valve vacuumizing connecting pipe.
Be connected with environment temperature sensor at data acquisition unit.
Be connected with digital type tensimeter in galvanochemistry and infrared ray sensing equipment, digital type tensimeter is connected with control module.
Compared with the prior art, the utility model can be implemented the on-line monitoring to the SF6 isolating switch, the purity of Real-Time Monitoring SF6 and analyte situation, can analyze the health status of SF6 isolating switch, can prevent the circuit breaker failure because of SF6, cause the generation of the accidents such as Leakage Gas, power failure, have great economic and social benefit.Such as model machine hanging net operation three months, can monitor at any time whether decomposition product SO is arranged in the SF6 isolating switch
2Generation and monitoring whether leakage phenomenon is arranged, can save power off time and staff and go expense that Site Detection produces near 50,000 yuan, within 5 years quality guarantee periods, can bring into play immeasurable value.
The utility model also has the following advantages simultaneously:
(1) adopts infrared sensor on-line measurement SF6 purity and employing electrochemical process on-line measurement SO
2Content is namely opened the air cock solenoid valve, and air inlet enters galvanochemistry and infrared ray sensing equipment to the sample pneumatic transmission by pressure maintaining valve, reaches specified pressure autoshutdown air intake valve, realizes SF6 purity and SO in the sample gas
2The measurement of content, measuring-signal are used high-precision a/d converter and single-chip microcomputer collection, storage behind filter and amplification, measure simultaneously temperature signal and realize the temperature compensation of electrochemical sensor measuring-signal, and show in real time SF6 purity and SO by charactron
2Content is patrolled and examined for the operation maintenance personnel, accurately judges state of insulation, fault category and the degree of SF6 inflatable isolating switch according to gas content.Adopt pressure maintaining valve control admission pressure, can satisfy infrared sensor and the requirement of electrochemical sensor applying pressure, realized infrared sensor and electrochemical sensor to the application of gases at high pressure on-line monitoring, measuring accuracy is 0.1%;
(2) to SF6 inflatable isolating switch state of insulation on-line monitoring the time, after measurement is finished, open pressure-releasing electromagnetic valve by Single-chip Controlling, start accurate force (forcing) pump, by accurate force (forcing) pump the gas in the air chamber is discharged, when reaching certain pressure between retaining valve and the accurate force (forcing) pump, retaining valve is automatically opened gas is flow back in the SF6 inflatable isolating switch, until tensimeter monitoring pressure value is when reaching very little, at first close pressure-releasing electromagnetic valve, close again accurate force (forcing) pump, finish the recycling of measurement gas.The gas circulation monitoring pipe adopts 6 mm pipelines, can improve the gas circuit vacuumizing effect like this, can satisfy the rules requirement.The pipeline junction adopts metal ferrule to connect, and can strictly seal and bear high pressure.
(3), two vacuum-pumping tube two parts gas circuits are communicated with, only have a vacuum orifice, improved the convenience of operation.Demarcate mouth and be used for transducer calibration, air inlet electromagnetic valve and return-air solenoid valve are in open mode under calibration mode, need simultaneously to open for exhaust vacuumizing hand valve.
(4) the sensor measurement SF6 isolating switch SF6 purity of the infrared principles of employing import high stability, its infrared sensor is through correction, the compensation of internal circuit, and its output linearity degree is good, and precision is high; The sensor external structure also is more suitable for the measurement under the high-frequency electric field environment, and it and processing of circuit partly combine together, with the reduce disturbance coupling, improves stability and the reliability of circuit long-term work.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Wherein: 1-sulfur hexafluoride inflatable-type isolating switch; 2-takes back the gas threeway; The 3-reduction valve; 4-demarcates gas air inlet threeway; 5-demarcates gas control hand valve processed; 6-air inlet switch solenoid valve; 7-galvanochemistry and infrared ray sensing equipment; The digital type tensimeter of 8-; The 9-environment temperature sensor; 10-return-air switch electromagnetic valve; The 11-data acquisition unit; The 12-force (forcing) pump; The 13-control module; 14-shows transmission unit; The 15-retaining valve; 16-vacuumizes hand valve; 17-gas circulation monitoring pipe; 18-vacuumizes connecting pipe; The 19-screen pack; The threeway of 20-interface conversion.
Embodiment
Embodiment 1: embodiment: as shown in Figure 1: the inflation inlet at sulfur hexafluoride inflatable-type isolating switch 1 is connected with interface conversion threeway 20, and in a port connection gas circulation monitoring pipe 17 of interface conversion threeway 20, it is for subsequent use that the another port connects plug.Gas circulation monitoring pipe 17 is interrupted by the equipment that need connect and is multistage, equipment in gas circulation monitoring pipe 17 serial connection has successively screen pack 19, takes back gas threeway 2, reduction valve 3, demarcate gas air inlet threeway 4, air inlet switch solenoid valve 6, galvanochemistry and infrared ray sensing equipment 7, return-air switch electromagnetic valve 10, force (forcing) pump 12 and retaining valve 15, and the outlet of gas circulation monitoring pipe 17 is connected to and takes back the circulation that can finish gas in the gas threeway 2.For realizing on-line monitoring control, be connected with data acquisition unit 11 at galvanochemistry and infrared ray sensing equipment 7, data acquisition unit 11 is connected with control module 13, control module 13 be connected that transmission unit 14 connects, air inlet switch solenoid valve 6, return-air switch electromagnetic valve 10 and force (forcing) pump 12 are controlled by control module 13.The in addition interface that is serially connected in the demarcation gas air inlet threeway 4 on the gas circulation monitoring pipe 17 is connected with demarcation gas control hand valve 5 processed.Galvanochemistry and infrared ray sensing equipment 7 are by SO
2Electrochemical sensor and SF6 infrared sensor consist of, and gas passes through first SO
2Electrochemical sensor passes through the SF6 infrared sensor again.For realizing vacuumizing, force (forcing) pump 12 two ends are respectively equipped with and vacuumize connecting pipe 18 on gas circulation monitoring pipe 17, be connected with and vacuumize hand valve 16 vacuumizing connecting pipe 18, two vacuumize connecting pipe 18 is connected with gas circulation monitoring pipe 17 by threeway, and simultaneously two two vacuumize connecting pipe 18 and merge into a vacuum orifice by three-way pipe again.Measured value is more accurate in order to make, and is connected with environment temperature sensor 9 at data acquisition unit 11.Simultaneously be connected with digital type tensimeter 8 in galvanochemistry and infrared ray sensing equipment 7, digital type tensimeter 8 is connected with control module 13.
The on-line monitoring process of this device is:
1, connect vacuum extractors whole gas circulation monitoring pipe 17 vacuumized vacuumizing connecting pipe 18.
2, demarcating gas air inlet threeway 4 connection demarcation device of air, air inlet switch solenoid valve 6 and return-air switch electromagnetic valve 10 are in open mode under calibration mode, need simultaneously to open for exhaust vacuumizing hand valve; Demarcate and close all switches of gas circuit after complete, removal is demarcated device of air.
3, sense cycle is to detect once in 2 hours, observation process is that control module 13 control air inlet switch solenoid valves 6 are opened, return-air switch electromagnetic valve 10 is closed, sulfur hexafluoride inflatable-type isolating switch 1 interior gas enters galvanochemistry and infrared ray sensing equipment 7 through filter screen 19 filtrations, pressurizing valve 3 after reducing pressure by interface conversion threeway 20, and gas passes through first SO
2Electrochemical sensor passes through the SF6 infrared sensor again, realizes SF6 purity and SO in the sample gas
2The measurement of content, measuring-signal are used high-precision a/d converter and single-chip microcomputer collection, storage behind filter and amplification, measure simultaneously temperature signal and realize the temperature compensation of electrochemical sensor measuring-signal, and show in real time SF6 purity and SO by charactron
2Content is patrolled and examined for the operation maintenance personnel, accurately judges state of insulation, fault category and the degree of SF6 inflatable isolating switch according to gas content.
4, measure complete after, close by control module 13 control air inlet switch solenoid valves 6, return-air switch electromagnetic valve 10 is opened, force (forcing) pump 12 is opened, realize exhaust, by accurate force (forcing) pump 12 gas in galvanochemistry and the infrared ray sensing equipment 7 is discharged, when reaching certain pressure between retaining valve 15 and the accurate force (forcing) pump 12, retaining valve 15 is automatically opened gas is flow back in the SF6 inflatable isolating switch 1, until tensimeter 21 monitors force value when reaching very little, at first close pressure-releasing electromagnetic valve, close again accurate force (forcing) pump, finish the recycling of measurement gas.
Claims (9)
1. sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device, it comprises sulfur hexafluoride inflatable-type isolating switch (1), it is characterized in that: be connected with gas circulation monitoring pipe (17) at sulfur hexafluoride inflatable-type isolating switch (1), be serially connected with air inlet switch solenoid valve (6) in gas circulation monitoring pipe (17), galvanochemistry and infrared ray sensing equipment (7), return-air switch electromagnetic valve (10) and force (forcing) pump (12), be connected with data acquisition unit (11) in galvanochemistry and infrared ray sensing equipment (7), control module (13) and demonstration transmission unit (14), control module (13) and air inlet switch solenoid valve (6), return-air switch electromagnetic valve (10) is connected 12 with force (forcing) pump) connect.
2. sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device according to claim 1 is characterized in that: the air inlet side of, galvanochemistry upper in gas circulation monitoring pipe (17) and infrared ray sensing equipment (7) is connected with reduction valve (3).
3. sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device according to claim 1, it is characterized in that: be connected with interface conversion threeway (20) at sulfur hexafluoride inflatable-type isolating switch (1), the gas outlet of gas circulation monitoring pipe (17) is connected with interface conversion threeway (20).
4. sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device according to claim 3, it is characterized in that: be connected with screen pack (19) and take back gas threeway (2) in gas circulation monitoring pipe (17), screen pack (19) is positioned at the side of giving vent to anger of interface conversion threeway (20), takes back the side of giving vent to anger that gas threeway (2) is positioned at screen pack (19).
5. sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device according to claim 1, it is characterized in that: the air inlet side of, galvanochemistry upper in gas circulation monitoring pipe (17) and infrared ray sensing equipment (7) is connected with demarcates gas air inlet threeway (4), and an interface demarcating gas air inlet threeway (4) is connected with demarcation gas control hand valve processed (5).
6. sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device according to claim 1, it is characterized in that: galvanochemistry and infrared ray sensing equipment (7) are by SO
2Electrochemical sensor and SF6 infrared sensor consist of, and gas passes through first the SO2 electrochemical sensor, passes through the SF6 infrared sensor again.
7. sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device according to claim 1, it is characterized in that: the steam output side at the upper force (forcing) pump (12) of gas circulation monitoring pipe (17) is connected with retaining valve (15), be respectively equipped with at upper force (forcing) pump (12) two ends of gas circulation monitoring pipe (17) and vacuumize connecting pipe (18), be connected with and vacuumize hand valve (16) vacuumizing connecting pipe (18).
8. sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device according to claim 1 is characterized in that: be connected with environment temperature sensor (9) at data acquisition unit (11).
9. sulfur hexafluoride inflatable-type isolating switch insulation state on-line monitoring device according to claim 1, it is characterized in that: be connected with digital type tensimeter (8) in galvanochemistry and infrared ray sensing equipment (7), digital type tensimeter (8) is connected with control module (13).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585632 CN202854298U (en) | 2012-11-08 | 2012-11-08 | Sulphur hexafluoride inflatable circuit breaker insulation state on-line monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220585632 CN202854298U (en) | 2012-11-08 | 2012-11-08 | Sulphur hexafluoride inflatable circuit breaker insulation state on-line monitoring device |
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| CN 201220585632 Expired - Lifetime CN202854298U (en) | 2012-11-08 | 2012-11-08 | Sulphur hexafluoride inflatable circuit breaker insulation state on-line monitoring device |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558066A (en) * | 2013-11-15 | 2014-02-05 | 国家电网公司 | On-line monitoring sampling system for sulfur hexafluoride gas |
| CN103743602A (en) * | 2013-11-26 | 2014-04-23 | 广西电网公司电力科学研究院 | Gas circulating apparatus applied to SF6 decomposer on-line monitoring equipment |
| CN104198393A (en) * | 2014-04-29 | 2014-12-10 | 贵州电力试验研究院 | On-line monitoring system and method for SF6 decomposition gas components in electrical equipment |
| CN104659700A (en) * | 2015-01-29 | 2015-05-27 | 重庆市送变电工程有限公司 | Automatic gas filling warning device of SF6 gas insulated metal closed switch equipment |
| CN104876189A (en) * | 2015-05-21 | 2015-09-02 | 国家电网公司 | SF6 gas online purifying device of electrical SF6 circuit breaker and application method of SF6 gas online purifying device |
| CN105513782A (en) * | 2015-11-16 | 2016-04-20 | 任红霞 | Intelligent inflatable voltage transformer |
| CN106058644A (en) * | 2016-06-12 | 2016-10-26 | 华中科技大学 | Gas filling proportion control device of graphite electrode gas switch, and gas filling device and method |
| CN108181202A (en) * | 2018-03-08 | 2018-06-19 | 国网安徽省电力有限公司电力科学研究院 | A kind of novel GIS SF6Density on-Line Monitor Device and system |
| CN108458984A (en) * | 2018-05-21 | 2018-08-28 | 郑州力创光电技术有限公司 | The online gas-monitoring control system of air insulating device based on photoelectric sensing principle |
| CN110823470A (en) * | 2019-11-18 | 2020-02-21 | 国家电网有限公司 | Movable SF6 decomposition product online monitoring system and method |
| CN111024161A (en) * | 2019-12-30 | 2020-04-17 | 安徽理工大学 | SF6 decomposed gas detection device based on electrochemical sensor |
| CN111337628A (en) * | 2020-04-02 | 2020-06-26 | 国网安徽省电力有限公司电力科学研究院 | Electrified detecting and purifying system for insulating gas |
| CN112326596A (en) * | 2020-10-30 | 2021-02-05 | 国网上海市电力公司 | SF based on long-optical-path TDLAS technology6Online monitoring device for decomposed substances |
| CN114839235A (en) * | 2022-04-22 | 2022-08-02 | 国网黑龙江省电力有限公司电力科学研究院 | Mixed gas decomposition product measuring device based on electrochemical principle |
-
2012
- 2012-11-08 CN CN 201220585632 patent/CN202854298U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558066A (en) * | 2013-11-15 | 2014-02-05 | 国家电网公司 | On-line monitoring sampling system for sulfur hexafluoride gas |
| CN103743602A (en) * | 2013-11-26 | 2014-04-23 | 广西电网公司电力科学研究院 | Gas circulating apparatus applied to SF6 decomposer on-line monitoring equipment |
| CN104198393B (en) * | 2014-04-29 | 2015-08-19 | 贵州电力试验研究院 | SF 6decomposed gas component on-line monitoring system and method in electrical equipment |
| CN104198393A (en) * | 2014-04-29 | 2014-12-10 | 贵州电力试验研究院 | On-line monitoring system and method for SF6 decomposition gas components in electrical equipment |
| CN104659700B (en) * | 2015-01-29 | 2017-02-22 | 重庆市送变电工程有限公司 | Automatic gas filling warning device of SF6 gas insulated metal closed switch equipment |
| CN104659700A (en) * | 2015-01-29 | 2015-05-27 | 重庆市送变电工程有限公司 | Automatic gas filling warning device of SF6 gas insulated metal closed switch equipment |
| CN104876189A (en) * | 2015-05-21 | 2015-09-02 | 国家电网公司 | SF6 gas online purifying device of electrical SF6 circuit breaker and application method of SF6 gas online purifying device |
| CN105513782A (en) * | 2015-11-16 | 2016-04-20 | 任红霞 | Intelligent inflatable voltage transformer |
| CN106058644A (en) * | 2016-06-12 | 2016-10-26 | 华中科技大学 | Gas filling proportion control device of graphite electrode gas switch, and gas filling device and method |
| CN108181202A (en) * | 2018-03-08 | 2018-06-19 | 国网安徽省电力有限公司电力科学研究院 | A kind of novel GIS SF6Density on-Line Monitor Device and system |
| CN108181202B (en) * | 2018-03-08 | 2023-11-21 | 国网安徽省电力有限公司电力科学研究院 | Novel SF for GIS 6 Density on-line monitoring device and system |
| CN108458984A (en) * | 2018-05-21 | 2018-08-28 | 郑州力创光电技术有限公司 | The online gas-monitoring control system of air insulating device based on photoelectric sensing principle |
| CN110823470A (en) * | 2019-11-18 | 2020-02-21 | 国家电网有限公司 | Movable SF6 decomposition product online monitoring system and method |
| CN111024161A (en) * | 2019-12-30 | 2020-04-17 | 安徽理工大学 | SF6 decomposed gas detection device based on electrochemical sensor |
| CN111337628A (en) * | 2020-04-02 | 2020-06-26 | 国网安徽省电力有限公司电力科学研究院 | Electrified detecting and purifying system for insulating gas |
| CN112326596A (en) * | 2020-10-30 | 2021-02-05 | 国网上海市电力公司 | SF based on long-optical-path TDLAS technology6Online monitoring device for decomposed substances |
| CN114839235A (en) * | 2022-04-22 | 2022-08-02 | 国网黑龙江省电力有限公司电力科学研究院 | Mixed gas decomposition product measuring device based on electrochemical principle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20130403 |
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