CN113933477B - Continuous monitoring system for coal mining machine after onboard gas monitoring and power failure - Google Patents
Continuous monitoring system for coal mining machine after onboard gas monitoring and power failure Download PDFInfo
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- CN113933477B CN113933477B CN202111243995.0A CN202111243995A CN113933477B CN 113933477 B CN113933477 B CN 113933477B CN 202111243995 A CN202111243995 A CN 202111243995A CN 113933477 B CN113933477 B CN 113933477B
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- 239000003245 coal Substances 0.000 title claims abstract description 70
- 238000005065 mining Methods 0.000 title claims abstract description 64
- 238000012544 monitoring process Methods 0.000 title claims abstract description 64
- 238000012795 verification Methods 0.000 claims abstract description 30
- 239000007858 starting material Substances 0.000 claims abstract description 28
- 239000002023 wood Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels, explosives
- G01N33/227—Explosives, e.g. combustive properties thereof
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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Abstract
The invention relates to a continuous monitoring system for monitoring onboard gas of a coal mining machine after power failure, which comprises a power failure instrument module, an onboard electromagnetic switch, an onboard sensor, an onboard verification loop, a wall-mounted sensor and a wall-mounted control loop, wherein the power failure instrument module is electrically connected with a starter of the coal mining machine, and the onboard electromagnetic switch is electrically connected with an electric control main transformer of the coal mining machine and the power failure instrument module respectively through onboard cables; the onboard cable is respectively and electrically connected with the onboard verification loop and the wall-mounted control loop in a parallel connection mode, the onboard verification loop is connected with the onboard sensor in series, and the wall-mounted control loop is connected with the wall-mounted sensor in series, so that the coal mining machine electric control main transformer can simultaneously supply power for the outage instrument module, the onboard electromagnetic switch, the onboard sensor, the onboard verification loop, the wall-mounted sensor and the wall-mounted control loop; the wall-mounted control loop and the airborne verification loop are electrically connected with the airborne electromagnetic switch, and the invention has the advantage of being capable of monitoring the gas content in the roadway in real time when the coal mining machine is closed.
Description
Technical Field
The invention relates to the technical field of mining equipment, in particular to a continuous monitoring system for monitoring onboard gas of a coal mining machine after power failure.
Background
The existing airborne gas monitoring power-off instrument is not provided with a special power supply in design, and is powered by a control transformer after the coal mining machine works in an electrified mode, and a relay outputs a switching signal after the coal mining machine airborne gas monitoring power-off instrument collects a gas concentration signal to control the on-off state of the coal mining machine. If the power-off instrument is not powered in the power-off and shutdown state of the coal mining machine, the gas concentration cannot be continuously monitored. And the gas is over-limited in the state of power-off and shutdown of the coal mining machine, and the power-off instrument cannot alarm when no power is supplied.
In addition, the power-off instrument outputs a switching signal to not directly control the starter to start the control loop, but input the switching signal into the master controller plc of the coal mining machine, and then the control center outputs the switching signal to switch on or off the starter self-protection control loop, so that the coal mining machine can still be started when the gas is over-limit, and can continuously run as long as the starting button is manually pressed, so that the gas electric locking cannot be realized in the true sense.
Because the initialization operation of the onboard gas monitoring power-off instrument of the coal mining machine is required, each time the coal mining machine is started, operators are required to press a start button for a long time, so that the time for the coal mining machine to enter a normal working state is prolonged, and the open probability of the coal mining machine is reduced.
Therefore, in order to address the above shortcomings, it is desirable to provide a continuous monitoring system for monitoring the onboard gas of a coal mining machine after power failure.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to solve the technical problems that the existing power-off instrument cannot continuously monitor the gas condition and has poor locking effect.
(II) technical scheme
In order to solve the technical problems, the invention provides a continuous monitoring system for monitoring gas carried by a coal mining machine after power failure, which comprises a power failure instrument module, an onboard electromagnetic switch, an onboard sensor, an onboard verification loop, a wall-mounted sensor and a wall-mounted control loop, wherein the power failure instrument module is electrically connected with a starter of the coal mining machine, and the onboard electromagnetic switch is electrically connected with an electric control main transformer of the coal mining machine and the power failure instrument module respectively through onboard cables; the onboard cable is respectively and electrically connected with the onboard verification loop and the wall-mounted control loop in a parallel connection mode, the onboard verification loop is connected with the onboard sensor in series, and the wall-mounted control loop is connected with the wall-mounted sensor in series, so that the coal mining machine electric control main transformer can simultaneously supply power for the outage instrument module, the onboard electromagnetic switch, the onboard sensor, the onboard verification loop, the wall-mounted sensor and the wall-mounted control loop; the wall-mounted control loop and the airborne verification loop are electrically connected with the airborne electromagnetic switch so as to control the on-current or off-current of the airborne electromagnetic switch.
As a further illustration of the invention, the de-energized meter module, the on-board electromagnetic switch, the on-board sensor, the on-board cable, and the on-board verification loop are preferably all mounted on the shearer, and the wall-mounted sensor and the wall-mounted control loop are both mounted on the roadway side wall.
As a further explanation of the invention, preferably, the power-off instrument module is internally provided with a gas monitoring power-off instrument and a power supply, the power supply is electrically connected with the coal mining machine electric control main transformer through an onboard cable, and the power supply is electrically connected with the gas monitoring power-off instrument, so that the gas monitoring power-off instrument continuously works through power supply after the coal mining machine is powered off, and the gas monitoring power-off instrument is respectively connected with the starter and the onboard electromagnetic switch of the coal mining machine.
As a further explanation of the present invention, preferably, when the gas monitoring and power-off device detects that the gas content in the roadway exceeds the standard, the switch of the control starter is turned off, so that the current of the main transformer of the coal mining machine does not flow into the starter, and the coal mining machine is not started.
As a further explanation of the present invention, preferably, the gas monitoring power-off instrument is internally provided with a conduction indicator lamp, and if a switch between the gas monitoring power-off instrument and the starter is closed, the conduction indicator lamp is turned on; if the switch between the gas power-off instrument and the starter is disconnected, the on-state indicator light is turned off.
As a further explanation of the present invention, preferably, the on-board sensor and the wall-mounted sensor are both gas sensors, the on-board sensor, the power-off module and the wall-mounted sensor operate simultaneously, the on-board sensor feeds back a monitoring signal to the on-board verification loop, and the wall-mounted sensor feeds back a monitoring signal to the wall-mounted control loop, and if the on-board verification loop or the wall-mounted control loop determines that the gas exceeds the standard, the on-board electromagnetic switch is controlled to be turned off.
As a further illustration of the invention, wall-mounted cables are preferably secured to the roadway sidewalls, the wall-mounted cables being connected to the wall-mounted control loop and the on-board cables.
As a further explanation of the present invention, it is preferable that the tunnel top surface is provided with a lighting lamp and a warning lamp, and the warning lamp surface is blue or yellow.
As a further explanation of the present invention, it is preferable that the power-off module is replaced if the warning lamp and the on indicator lamp are simultaneously turned on.
(III) beneficial effects
The technical scheme of the invention has the following advantages:
According to the invention, the uninterrupted power supply is additionally arranged in the existing power-off instrument, so that the power-on work of the coal cutter on-board gas monitoring power-off instrument is improved only when the coal cutter is in a power-on running state, and the gas concentration of the coal cutter on-board gas monitoring power-off instrument can be continuously monitored and monitored for more than 4 hours through the storage battery when the coal cutter is in a power-off shutdown state. When the gas exceeds the limit after the coal mining machine is powered off and stopped, the onboard gas monitoring power-off instrument of the coal mining machine can monitor and alarm and power off the main controller, so that the coal mining machine cannot work. And the multi-group verification loop is used for assisting, so that the coal mining machine cannot be started when the gas is over-limit, the working conditions of all equipment can be monitored, a fault unit can be found in time and maintained or replaced when faults occur, and the coal mining machine can be ensured to work efficiently on the premise of safe work.
Drawings
FIG. 1 is a general control logic diagram of the present invention;
fig. 2 is a block diagram of a power outage apparatus module according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The utility model provides a continuous monitoring system behind coal-winning machine airborne gas monitoring outage, as shown in fig. 1, including outage appearance module, airborne electromagnetic switch, airborne sensor, airborne verification return circuit, hanging sensor and hanging control circuit, outage appearance module and coal-winning machine's starter electric connection is the starter power supply through outage appearance module, under normal condition, presses the starter button, and the starter combined floodgate can make the coal-winning machine begin work. The onboard electromagnetic switch is electrically connected with the electric control main transformer of the coal mining machine and the power-off instrument module respectively through onboard cables, and a switch is additionally arranged to play a role of a starter main switch, so that the risk that the coal mining machine still continues to work when the gas concentration exceeds the standard due to the failure of the power-off instrument module can be reduced by matching with other electronic devices, and the safety is improved. The onboard cable is respectively and electrically connected with the onboard verification loop and the wall-mounted control loop in a parallel connection mode, the onboard verification loop is connected with the onboard sensor in series, and the wall-mounted control loop is connected with the wall-mounted sensor in series, so that the coal mining machine electric control main transformer can simultaneously supply power for the outage instrument module, the onboard electromagnetic switch, the onboard sensor, the onboard verification loop, the wall-mounted sensor and the wall-mounted control loop; the wall-mounted control loop and the airborne verification loop are electrically connected with the airborne electromagnetic switch so as to control the on-current or off-current of the airborne electromagnetic switch.
As shown in fig. 1, the outage instrument module, the airborne electromagnetic switch, the airborne sensor, the airborne cable and the airborne verification loop are all installed on the coal mining machine, and can move along with the tunneling of the coal mining machine, so that the operator is not required to install and arrange again, and the working time is saved. The wall-mounted sensor and the wall-mounted control loop are both arranged on the side wall of the roadway and used for monitoring the gas content in the roadway close to the working area, and the wall-mounted sensor and the wall-mounted control loop are matched with an airborne relevant monitoring device to accurately judge the gas content in the roadway. In addition, in the tunneling process of the coal mining machine, the wall-mounted sensor and the wall-mounted control loop are installed on one wood plate, the aim of transferring the wall-mounted sensor and the wall-mounted control loop simultaneously can be achieved by moving the wood plate, and the disassembly and assembly difficulty is reduced.
With reference to fig. 1 and 2, a gas monitoring power-off instrument and a power supply are arranged in the power-off instrument module, the power supply is electrically connected with a main transformer of a coal cutter through an onboard cable, the gas monitoring power-off instrument is respectively connected with a starter of the coal cutter and an onboard electromagnetic switch, the main transformer of the coal cutter outputs 12V voltage outwards, and the power supply and the gas monitoring power-off instrument are simultaneously powered through the onboard electromagnetic switch, so that the gas monitoring power-off instrument can work normally, and the power supply can store electricity. The power supply is electrically connected with the gas monitoring power-off instrument, so that the gas monitoring power-off instrument continues to work through power supply of the power supply after the coal mining machine is shut down. When the gas monitoring power-off instrument monitors that the gas content in the roadway exceeds the standard, a switch of the starter is controlled to be disconnected, so that the current of the main transformer of the coal mining machine power supply does not flow into the starter, and the coal mining machine is not started by pressing the starter switch. A conduction indicator lamp is arranged in the gas monitoring power-off instrument, and the conduction indicator lamp is on if a switch between the gas monitoring power-off instrument and the starter is closed; if a switch between the gas outage instrument and the starter is disconnected, the on indicator light is turned off, so that an operator can observe the state of the outage instrument conveniently, and the problem that whether the coal mining machine is not started to be the gas monitoring outage instrument is also solved conveniently.
With reference to fig. 1 and 2, the airborne sensor and the wall-mounted sensor are both gas sensors, and a wall-mounted cable is fixed on the side wall of the roadway and is connected with the wall-mounted control loop and the airborne cable for supplying power to the wall-mounted sensor and the control loop. The roadway top surface is provided with an illuminating lamp and an alarming lamp, the two types of alarming lamps are respectively blue or yellow, the illuminating lamp is normally on through wall hanging cable power supply, the blue alarming lamp is normally on, when the gas content exceeds the standard, the wall hanging sensor transmits an electric signal to the wall hanging control loop, the wall hanging control loop controls the on-board electromagnetic switch to be disconnected, the illuminating lamp and the blue alarming lamp are disconnected, the yellow alarming lamp is controlled to be normally on, and the operating personnel can be visually reminded of exceeding the standard gas, and the coal mining machine cannot be started, so that the safety of personnel and equipment is ensured.
In addition, if turn on pilot lamp and blue warning light and light simultaneously, then indicate that wall-hanging sensor and outage appearance module all normally work, if yellow warning light and turn on the pilot lamp and light simultaneously, then indicate that outage appearance module breaks down, can not detect the gas content, should change outage appearance module. If the on-state indicator light is turned off, the on-board electromagnetic switch is also turned off, and the yellow warning light is not turned on, so that the wall hanging detection component is indicated to be faulty. The operation condition of various lamp groups is not only used for visually and directly prompting operators that the gas content exceeds the standard, but also can be used for judging equipment faults, so that operators can directly find out the fault and timely and quickly remove the fault, the overhaul difficulty is reduced, and the safety is further improved.
In summary, the invention simultaneously works through the airborne sensor, the outage instrument module and the wall-mounted sensor, the airborne sensor feeds back the monitoring signal to the airborne verification loop, the wall-mounted sensor feeds back the monitoring signal to the wall-mounted control loop, and if the airborne verification loop or the wall-mounted control loop judges that the gas exceeds the standard, the airborne electromagnetic switch is controlled to be disconnected, and meanwhile, the on indicator lamp is also required to be turned off, so that the starter cannot start the coal mining machine without power supply, and safety is ensured. The power supply in the power-off instrument is combined, so that the gas content in a roadway can be continuously monitored when the coal mining machine is powered off, and when the coal mining machine is powered on, double insurance can be carried out by the airborne sensor and the wall-mounted sensor, so that the risk that an operator mistakenly starts the coal mining machine when the gas content is out of standard due to normal power supply of the starter caused by failure of the power-off instrument module is avoided, and the safety is further improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. Continuous monitoring system after coal-winning machine carries gas monitoring outage, its characterized in that: the system comprises a power-off instrument module, an airborne electromagnetic switch, an airborne sensor, an airborne verification loop, a wall-mounted sensor and a wall-mounted control loop, wherein the power-off instrument module, the airborne electromagnetic switch, the airborne sensor, an airborne cable and the airborne verification loop are all arranged on a coal mining machine, and the wall-mounted sensor and the wall-mounted control loop are all arranged on the side wall of a roadway; wall hanging cables are fixed on the side wall of the roadway, the wall hanging cables are connected with a wall hanging control loop and an airborne cable, and the wall hanging sensor and the wall hanging control loop are both arranged on a wood board; the power-off instrument module is electrically connected with a starter of the coal mining machine, and the airborne electromagnetic switch is electrically connected with the electric control main transformer of the coal mining machine and the power-off instrument module respectively through airborne cables; the onboard cable is respectively and electrically connected with the onboard verification loop and the wall-mounted control loop in a parallel connection mode, the onboard verification loop is connected with the onboard sensor in series, and the wall-mounted control loop is connected with the wall-mounted sensor in series, so that the coal mining machine electric control main transformer can simultaneously supply power for the outage instrument module, the onboard electromagnetic switch, the onboard sensor, the onboard verification loop, the wall-mounted sensor and the wall-mounted control loop; the wall-mounted control loop and the airborne verification loop are electrically connected with the airborne electromagnetic switch so as to control the on-current or off-current of the airborne electromagnetic switch; the machine carries sensor and hanging sensor and is gas sensor, and machine carries sensor, outage appearance module and hanging sensor simultaneous working, and machine carries sensor with monitoring signal feedback to machine carries the verification return circuit, and hanging sensor feeds back monitoring signal to hanging control circuit, if machine carries the verification return circuit or hanging control circuit judges that the gas exceeds standard the machine carries electromagnetic switch disconnection of control.
2. The continuous monitoring system after power failure for monitoring onboard gas of coal mining machine as claimed in claim 1, wherein: the power-off instrument module is internally provided with a gas monitoring power-off instrument and a power supply, the power supply is electrically connected with the coal mining machine electric control main transformer through an onboard cable, and the power supply is electrically connected with the gas monitoring power-off instrument, so that the gas monitoring power-off instrument continuously works through power supply after the coal mining machine is powered off, and the gas monitoring power-off instrument is respectively connected with a starter of the coal mining machine and an onboard electromagnetic switch.
3. The continuous monitoring system after power failure for monitoring gas on board a coal mining machine according to claim 2, wherein: when the gas monitoring power-off instrument monitors that the gas content in the roadway exceeds the standard, a switch of the starter is controlled to be disconnected, so that the current of the main transformer of the coal mining machine power supply does not flow into the starter, and the coal mining machine is not started.
4. A continuous monitoring system after power failure for monitoring gas on board a coal mining machine according to claim 3, wherein: a conduction indicator lamp is arranged in the gas monitoring power-off instrument, and the conduction indicator lamp is on if a switch between the gas monitoring power-off instrument and the starter is closed; if the switch between the gas power-off instrument and the starter is disconnected, the on-state indicator light is turned off.
5. The continuous monitoring system after power failure for monitoring onboard gas of coal mining machine as claimed in claim 4, wherein: the top surface of the roadway is provided with an illuminating lamp and a warning lamp, and the surface of the warning lamp is blue or yellow.
6. The continuous monitoring system after power failure for monitoring onboard gas of coal mining machine as claimed in claim 5, wherein: if the warning lamp and the conduction indicator lamp are on at the same time, the power-off instrument module is replaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111243995.0A CN113933477B (en) | 2021-10-26 | 2021-10-26 | Continuous monitoring system for coal mining machine after onboard gas monitoring and power failure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111243995.0A CN113933477B (en) | 2021-10-26 | 2021-10-26 | Continuous monitoring system for coal mining machine after onboard gas monitoring and power failure |
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| Publication Number | Publication Date |
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| CN113933477A CN113933477A (en) | 2022-01-14 |
| CN113933477B true CN113933477B (en) | 2024-04-19 |
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| CN2613003Y (en) * | 2003-04-18 | 2004-04-21 | 抚顺煤矿安全仪器总厂 | Gas monitoring explosion-proof magnetic starter |
| CN201546761U (en) * | 2009-12-23 | 2010-08-11 | 黑龙江科技学院 | Mine gas overrun signal wireless transmission system based on gas alarming mining lamp |
| CN202190114U (en) * | 2011-08-04 | 2012-04-11 | 山西潞安环保能源开发股份有限公司常村煤矿 | Control circuit for methane gas monitoring power-off device |
| CN202772552U (en) * | 2012-07-17 | 2013-03-06 | 吴增明 | Gas uninterrupted monitoring protection circuit based on coal mining machine |
| CN110247468A (en) * | 2019-06-14 | 2019-09-17 | 龙口矿业集团有限公司 | A kind of coalcutter airborne sensor uninterruptible power supply |
| CN210134975U (en) * | 2019-05-07 | 2020-03-10 | 山西金鼎高宝钻探有限责任公司 | While-drilling gas alarm system |
-
2021
- 2021-10-26 CN CN202111243995.0A patent/CN113933477B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2613003Y (en) * | 2003-04-18 | 2004-04-21 | 抚顺煤矿安全仪器总厂 | Gas monitoring explosion-proof magnetic starter |
| CN201546761U (en) * | 2009-12-23 | 2010-08-11 | 黑龙江科技学院 | Mine gas overrun signal wireless transmission system based on gas alarming mining lamp |
| CN202190114U (en) * | 2011-08-04 | 2012-04-11 | 山西潞安环保能源开发股份有限公司常村煤矿 | Control circuit for methane gas monitoring power-off device |
| CN202772552U (en) * | 2012-07-17 | 2013-03-06 | 吴增明 | Gas uninterrupted monitoring protection circuit based on coal mining machine |
| CN210134975U (en) * | 2019-05-07 | 2020-03-10 | 山西金鼎高宝钻探有限责任公司 | While-drilling gas alarm system |
| CN110247468A (en) * | 2019-06-14 | 2019-09-17 | 龙口矿业集团有限公司 | A kind of coalcutter airborne sensor uninterruptible power supply |
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