CN110007363A - A kind of underground cable report damage system - Google Patents
A kind of underground cable report damage system Download PDFInfo
- Publication number
- CN110007363A CN110007363A CN201910396869.5A CN201910396869A CN110007363A CN 110007363 A CN110007363 A CN 110007363A CN 201910396869 A CN201910396869 A CN 201910396869A CN 110007363 A CN110007363 A CN 110007363A
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- Prior art keywords
- cable
- data acquisition
- air cavity
- underground
- acquisition components
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- 238000009422 external insulation Methods 0.000 claims abstract description 10
- 239000002274 desiccant Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 13
- 230000009466 transformation Effects 0.000 abstract description 11
- 230000006837 decompression Effects 0.000 description 29
- 238000010276 construction Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 9
- 238000011835 investigation Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 238000009966 trimming Methods 0.000 description 3
- 238000013024 troubleshooting Methods 0.000 description 3
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Locating Faults (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a kind of underground cable reports to damage system, and including several cables for being embedded in underground, the cable includes core wire, external insulation layer and the armor layer that from-inner-to-outer is successively set with, and forms air cavity between the external insulation layer and the armor layer；It further include the compressor and air accumulator set gradually along airflow direction, the communicating downstream of the air accumulator has main line, the communicating downstream of the main line has several data acquisition components for corresponding and being connected to each air cavity, and the data acquisition components include baroceptor and data ultramagnifier；It further include the monitor cooperated with each data acquisition components and the compressor.Underground cable report damage system can rapidly and accurately determine the damaged part of cable, to exclude corresponding cable fault in time, guarantee the steady and continuous operation of power transmission and transformation system.
Description
Technical field
The present invention relates to cable fault detection and malfunction elimination technical fields, in particular to a kind of underground cable report damage system
System.
Background technique
Underground cable is the most common way of the distribution facilities such as power transmission and transformation system access cell, factory, in long-term work
It is found with practice, cable sheath often causes to damage during construction and road administration construction etc. due to by external force, greatly
In most cases, only the crust of damage cable has a power failure without directly resulting in construction, therefore power department can not be found in time,
In the case, unit in charge of construction generally can directly backfill construction site, thus give the normal table of power transmission and transformation system
Operation and power supply cause great security risk and huge economic losses.
Correspondingly, in subsequent power transmission and transformation system operational process, if leading to entire defeated change because of above-mentioned cable fault position
Electric system breaks down, then because cable is embedded in underground, and is backfilled in time, and cable failure position can not be directly determined, therefore
This not only the malfunction elimination time it is long, manpower and material resources needed for troubleshooting procedure loss it is larger, also give relevant electricity unit and user
Normal work and life cause inconvenience.
Therefore, how rapidly and accurately to determine the damaged part of cable, to exclude corresponding cable fault in time, guarantee defeated
The steady and continuous operation of transformer substation system is the important technological problems that those skilled in the art need to solve at present.
Summary of the invention
The object of the present invention is to provide a kind of underground cable reports to damage system, which damages system can be quick and precisely
Ground determines the damaged part of cable, to exclude corresponding cable fault in time, guarantees the steady and continuous operation of power transmission and transformation system.
In order to solve the above technical problems, the present invention provides a kind of underground cable report damage system, including several undergrounds that are embedded in
Cable, the cable include core wire, external insulation layer and the armor layer that from-inner-to-outer is successively set with, the external insulation layer and the armour
Air cavity is formed between first layer；
It further include the compressor and air accumulator set gradually along airflow direction, the communicating downstream of the air accumulator has supervisor
Road, the communicating downstream of the main line have several data acquisition components for corresponding and being connected to each air cavity, the number
It include baroceptor and data ultramagnifier according to acquisition component；
It further include the monitor cooperated with each data acquisition components and the compressor.
Preferably, the data acquisition components further include combined aural and visual alarm.
Preferably, the connectivity part between the data acquisition components and the air cavity can be opened and closed to be provided with valve gear.
Preferably, the filter device equipped with desiccant is communicated between the air accumulator and the main line.
It preferably, is wire signal connection or wireless signal connection between the data feedback device and the monitor.
Relatively above-mentioned background technique, underground cable report provided by the present invention damage system, arrange in operational process, pass through
Compressor cooperation air accumulator is inflated each air cavity via main line, and baroceptor incudes in real time and monitors gas in air cavity
Pressure, until air pressure reaches preset pressure value in the air cavity of each cable, baroceptor passes through data feedback device to monitor at this time
Feedback signal, and inflation is stopped by monitor control compressor and pressure maintaining is implemented to main pipe and each air cavity；Cable operates normally
In use, if because caused by outside construction or other reasons the cables such as armor layer main structure it is damaged, the air cavity meeting of the breakage
Gas leak and decompression occurs, if the atmospheric pressure value at the air cavity declines rapidly and reach air pressure lower limit, baroceptor passes through
Data feedback device feeds back rapidly decompression signal to monitor, and staff accurately determines current feedback rapidly decompression by monitor
The corresponding cable position of data feedback device of signal, and reach scene in time and live trimming and failure are carried out to corresponding damaged cable
Exclude operation；If causing air pressure in air cavity slowly to decline and reach because longtime running or part are subtle damaged in cable operational process
To air pressure lower limit, then baroceptor feeds back slow decompression signal to monitor by data feedback device, and monitor controls later
Compressor cooperates air accumulator to implement tonifying Qi to the corresponding air cavity of the data feedback device for feeding back the slow decompression signal by main line,
Until the air pressure of the air cavity restores to preset pressure value, follow-up operation and the breakage failure feedback to guarantee respective cable are accurate
Property, when necessary, even if what monitor received is slow decompression signal, staff can also directly rush towards according to anticipation operating condition
Feed back at the corresponding cable of data feedback device of the slow decompression signal, so as to carry out cable failure and failure pre- investigation and and
When handle, guarantee power transmission and transformation system steady and continuous operation.
In another preferred embodiment of the invention, the data acquisition components further include combined aural and visual alarm.When cable occurs
When damaged, which sounds an alarm sound and alarm light, to receive the breakage of data feedback device sending in staff
Decompression feedback signal and rushing towards, which can be determined rapidly according to the alarm tone and alarm light behind scene, occurs damaged cable position, from
And further shorten the positioning investigation time of staff, damaged maintenance and the fault removal efficiency of respective cable are improved, is reduced
Intensity of workers and cost of labor.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram that underground cable report provided by a kind of specific embodiment of the present invention damages system.
Wherein, 11- compressor, 111- air accumulator, 112- filter device, 12- main line, 13- data acquisition components, 14-
Monitor, 21- external insulation layer, 22- armor layer, 23- air cavity, 231- valve gear.
Specific embodiment
Core of the invention is to provide a kind of underground cable report damage system, which damages system can be quick and precisely
Ground determines the damaged part of cable, to exclude corresponding cable fault in time, guarantees the steady and continuous operation of power transmission and transformation system.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Referring to FIG. 1, the structure that Fig. 1 is underground cable report damage system provided by a kind of specific embodiment of the present invention is shown
It is intended to.
In a specific embodiment, underground cable report provided by the present invention damages system, including several electricity for being embedded in underground
Cable, cable include core wire, external insulation layer and the armor layer that from-inner-to-outer is successively set with, and form gas between external insulation layer and armor layer
Chamber；It further include the compressor and air accumulator set gradually along airflow direction, the communicating downstream of air accumulator has main line, main line
Communicating downstream has several data acquisition components for corresponding and being connected to each air cavity, and data acquisition components include baroceptor
With data ultramagnifier；It further include the monitor cooperated with each data acquisition components and compressor.
It arranges in operational process, cooperates air accumulator to be inflated via main line to each air cavity by compressor, air pressure transmission
Sensor incudes in real time and monitors air pressure in air cavity, until air pressure reaches preset pressure value in the air cavity of each cable, air pressure transmission at this time
Sensor passes through data feedback device to monitor feedback signal, and stops inflating and to main pipe and respectively by monitor control compressor
Air cavity implements pressure maintaining；Cable operates normally in use, if because of the cables main body knot such as armor layer caused by outside construction or other reasons
Structure is damaged, then gas leak can occur for the air cavity of the breakage and decompression, if the atmospheric pressure value at the air cavity declines and reaches rapidly
Air pressure lower limit, then by data feedback device, to monitor feedback, rapidly decompression signal, staff pass through monitoring to baroceptor
Device accurately determines the corresponding cable position of data feedback device of current feedback rapidly decompression signal, and reaches scene in time to corresponding
Damaged cable carries out scene trimming and troubleshooting operation；If in cable operational process due to longtime running or part are subtle damaged
Air pressure in air cavity is caused slowly to decline and reach air pressure lower limit, then baroceptor is slow to monitor feedback by data feedback device
Slow decompression signal, the compressor cooperation air accumulator of monitor control later is by main line to the data for feeding back the slow decompression signal
The corresponding air cavity of ultramagnifier implements tonifying Qi, until the air pressure of the air cavity restores to preset pressure value, after guaranteeing respective cable
Reforwarding row and breakage failure feed back accuracy, when necessary, even if that monitor receives is slow decompression signal, staff
It can be rushed towards according to anticipation operating condition and directly at the corresponding cable of data feedback device for feeding back the slow decompression signal, to carry out electricity
The pre- investigation and processing in time of cable breakage and failure, guarantee the steady and continuous operation of power transmission and transformation system.
Further, since cable main structure occurs the subtle breakage in part or slowly corrodes existing in equipment actual moving process
As when, air pressure in air cavity can't dramatic decrease, therefore when compressor cooperation air accumulator implements above-mentioned slow decompression situation
When ftercompction is handled, if air cavity does not restore yet to preset pressure value after ftercompction processing certain time, baroceptor according to
Rapidly decompression situation feeds back corresponding signal, implements investigation so that staff rushes towards construction site in time, avoids occurring because of cable
Subtle breakage slowly corrodes and leads to subsequent power transmission and transformation system failure, guarantees power system stability continuous operation.
It should be noted that specific in practical application, it is contemplated that the anti-pressure ability of related equipment and equipment, and meet big
Operating condition in most cases needs, and the preset pressure value in above-mentioned air cavity is preferably 2atm (standard atmospheric pressure, 1 standard atmospheric pressure
For 101.325kPa), and above-mentioned air pressure lower limit value is preferably 1.5atm, if slow decompression occurs in air cavity, compressor cooperation
Air accumulator is corresponding air cavity ftercompction to 2atm, if rapidly decompression occurs in air cavity and be depressurized to 1.5atm rapidly hereinafter, if work
Personnel rush towards rapidly at cable failure implementation and handle, and in this case, compressor does not start usually, finish to respective cable repairing
Afterwards, then to its corresponding air cavity implement tonifying Qi operation.
Furthermore it should be noted that when cable leads to damage because of construction or municipal construction, by described buried
After cable report damage system quickly determines cable failure position in time, staff can be on the scene in time and and associated construction
Unit divides cable fault responsibility, in order to avoid cause cable to be tieed up after directly implementing scene backfill because not determining that construction causes damage responsible party
The cost repaired independently is undertaken by electric system relevant unit, thus greatly reduce the plant maintenance of electric system relevant unit at
This, specifies the divisions of responsibility of cable failure accident, improves the construction efficiency of correlation engineering.
It should be further noted that monitor is set to associate power system operation supervision unit when practical application
In monitoring room, so that staff understands cable operating condition in time, and can be fast when decompression alarm occurs for the air cavity of cable
Speed obtains relevant information and implements corresponding processing.
Further, data acquisition components further include combined aural and visual alarm.When cable occurs damaged, combined aural and visual alarm hair
Alarm tone and alarm light out, to receive the damaged decompression feedback signal of data feedback device sending in staff and to rush towards scene
It can be determined rapidly according to the alarm tone and alarm light afterwards and damaged cable position occurs, to further shorten staff's
The positioning investigation time improves damaged maintenance and the fault removal efficiency of respective cable, reduces intensity of workers and artificial
Cost.
More specifically, the connectivity part between data acquisition components and air cavity can be opened and closed to be provided with valve gear.Cable production
In the process, when to implementing to seal at cable armor layer and external insulation layer, valve gear is installed in corresponding position, so as in electricity
By the valve gear by air cavity and main line reliable connected when cable is embedded, and the gaseous environment of data acquisition components is effectively ensured
Sensing capability, can rapidly and accurately to feed back damaged information when decompression occurs for air cavity, so that staff implements in time
Relevant treatment.
On the other hand, the filter device equipped with desiccant is communicated between air accumulator and main line.The filter device can
The moisture being mingled in the gas exported in air accumulator is completely removed, in case moist air stream is passed through normally leading to cable after air cavity
Electricity operation adversely affects, and guarantees the reliable and stable operation of power transmission and transformation system.
In addition, being wire signal connection or wireless signal connection between data feedback device and monitor.Specifically, above-mentioned
Signal can be transmitted using wired connection modes such as data cables between data feedback device and monitor, it can also be using bluetooth etc.
Radio connection transmits signal, in practical application, staff can according at cable burial actual environment and correlation apply
Type of attachment between work maintenance cost flexible choice data feedback device and monitor, in principle, as long as can satisfy described
The actual use that underground cable report damages system needs.
In summary, underground cable report provided in the present invention damages system, arranges in operational process, is matched by compressor
It closes air accumulator to be inflated each air cavity via main line, baroceptor incudes in real time and monitor air pressure in air cavity, until each
Air pressure reaches preset pressure value in the air cavity of cable, at this time baroceptor by data feedback device to monitor feedback signal,
And inflation is stopped by monitor control compressor and pressure maintaining is implemented to main pipe and each air cavity；Cable operate normally in use, if
Because the cables such as armor layer main structure is damaged caused by outside construction or other reasons, then the air cavity of the breakage can occur outside gas
It lets out and decompression, if the atmospheric pressure value at the air cavity declines rapidly and reach air pressure lower limit, baroceptor passes through data feedback device
To monitor feedback rapidly decompression signal, staff accurately determines the data of current feedback rapidly decompression signal by monitor
The corresponding cable position of ultramagnifier, and reach scene in time and live trimming and troubleshooting operation are carried out to corresponding damaged cable；
If causing air pressure in air cavity slowly to decline and reach under air pressure because of longtime running or local subtle breakage in cable operational process
Limit, then baroceptor feeds back slow decompression signal to monitor by data feedback device, and the compressor of monitor control later is matched
It closes air accumulator and tonifying Qi is implemented to the corresponding air cavity of the data feedback device for feeding back the slow decompression signal by main line, until the gas
The air pressure of chamber restores to preset pressure value, to guarantee the follow-up operation and breakage failure feedback accuracy of respective cable, when necessary,
Even if what monitor received is slow decompression signal, staff can also rush towards feedback according to anticipation operating condition and directly, and this is slow
At the corresponding cable of data feedback device of decompression signal, to carry out the pre- investigation and processing in time of cable failure and failure, protect
Demonstrate,prove the steady and continuous operation of power transmission and transformation system.
Underground cable report provided by the present invention damage system is described in detail above.It is used herein specifically a
Principle and implementation of the present invention are described for example, and it is of the invention that the above embodiments are only used to help understand
Method and its core concept.It should be pointed out that for those skilled in the art, not departing from the principle of the invention
Under the premise of, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the claims in the present invention
Protection scope in.
Claims (5)
1. a kind of underground cable report damages system, it is characterised in that: including several cables for being embedded in underground, the cable includes in
And core wire, external insulation layer and the armor layer being successively set with outside, air cavity is formed between the external insulation layer and the armor layer；
It further include the compressor and air accumulator set gradually along airflow direction, the communicating downstream of the air accumulator has main line, institute
The communicating downstream for stating main line has several data acquisition components for corresponding and being connected to each air cavity, the data acquisition
Component includes baroceptor and data ultramagnifier；
It further include the monitor cooperated with each data acquisition components and the compressor.
2. underground cable report as described in claim 1 damages system, it is characterised in that: the data acquisition components further include acousto-optic
Alarm.
3. underground cable report as described in claim 1 damages system, it is characterised in that: the data acquisition components and the air cavity
Between connectivity part can be opened and closed to be provided with valve gear.
4. underground cable report as described in claim 1 damages system, it is characterised in that: between the air accumulator and the main line
It is communicated with the filter device equipped with desiccant.
5. underground cable report as described in claim 1 damages system, it is characterised in that: the data feedback device and the monitor
Between for wire signal connection or wireless signal connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396869.5A CN110007363B (en) | 2019-05-13 | 2019-05-13 | Buried cable loss reporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396869.5A CN110007363B (en) | 2019-05-13 | 2019-05-13 | Buried cable loss reporting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110007363A true CN110007363A (en) | 2019-07-12 |
| CN110007363B CN110007363B (en) | 2024-05-17 |
Family
ID=67176790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910396869.5A Active CN110007363B (en) | 2019-05-13 | 2019-05-13 | Buried cable loss reporting system |
Country Status (1)
| Country | Link |
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| CN (1) | CN110007363B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508702A (en) * | 2022-03-01 | 2022-05-17 | 青岛西海岸市政新能源热力有限公司 | Optimization control method for pressure difference and flow at tail end of main pipe network |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0755871A (en) * | 1993-08-23 | 1995-03-03 | Toshiba Corp | Fault locating system |
| JPH0843473A (en) * | 1994-08-01 | 1996-02-16 | Hitachi Cable Ltd | Fault-section judgment method for power cable |
| US20080100307A1 (en) * | 2006-11-01 | 2008-05-01 | Abb Research Ltd. | Cable fault detection |
| CN101192853A (en) * | 2006-12-01 | 2008-06-04 | 苏州工业园区大诚电讯科技有限公司 | Remote monitoring system and monitoring method for underground communication cable |
| CN201117088Y (en) * | 2007-11-12 | 2008-09-17 | 苏州工业园区新大诚科技发展有限公司 | Electric cable air pressure collecting equipment |
| EP2518521A2 (en) * | 2011-04-29 | 2012-10-31 | General Electric Company | System and device for detecting defects in underground cables |
| CN106855603A (en) * | 2016-12-19 | 2017-06-16 | 李庆忠 | Feeder line fault independent positioning method, detecting terminal, main website, alignment system |
| CN209656911U (en) * | 2019-05-13 | 2019-11-19 | 国网冀北电力有限公司承德供电公司 | A kind of underground cable report damage system |
-
2019
- 2019-05-13 CN CN201910396869.5A patent/CN110007363B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0755871A (en) * | 1993-08-23 | 1995-03-03 | Toshiba Corp | Fault locating system |
| JPH0843473A (en) * | 1994-08-01 | 1996-02-16 | Hitachi Cable Ltd | Fault-section judgment method for power cable |
| US20080100307A1 (en) * | 2006-11-01 | 2008-05-01 | Abb Research Ltd. | Cable fault detection |
| CN101192853A (en) * | 2006-12-01 | 2008-06-04 | 苏州工业园区大诚电讯科技有限公司 | Remote monitoring system and monitoring method for underground communication cable |
| CN201117088Y (en) * | 2007-11-12 | 2008-09-17 | 苏州工业园区新大诚科技发展有限公司 | Electric cable air pressure collecting equipment |
| EP2518521A2 (en) * | 2011-04-29 | 2012-10-31 | General Electric Company | System and device for detecting defects in underground cables |
| CN106855603A (en) * | 2016-12-19 | 2017-06-16 | 李庆忠 | Feeder line fault independent positioning method, detecting terminal, main website, alignment system |
| CN209656911U (en) * | 2019-05-13 | 2019-11-19 | 国网冀北电力有限公司承德供电公司 | A kind of underground cable report damage system |
Non-Patent Citations (1)
| Title |
|---|
| 王立军 等: "城区电缆接头故障在线监测与预警系统", 中国电业(技术版), no. 01, 31 December 2013 (2013-12-31), pages 18 - 21 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508702A (en) * | 2022-03-01 | 2022-05-17 | 青岛西海岸市政新能源热力有限公司 | Optimization control method for pressure difference and flow at tail end of main pipe network |
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| Publication number | Publication date |
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| CN110007363B (en) | 2024-05-17 |
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