CN113933477A - Continuous monitoring system for coal mining machine after airborne gas monitoring power failure - Google Patents
Continuous monitoring system for coal mining machine after airborne gas monitoring power failure Download PDFInfo
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- CN113933477A CN113933477A CN202111243995.0A CN202111243995A CN113933477A CN 113933477 A CN113933477 A CN 113933477A CN 202111243995 A CN202111243995 A CN 202111243995A CN 113933477 A CN113933477 A CN 113933477A
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- 238000005065 mining Methods 0.000 title claims abstract description 63
- 239000003245 coal Substances 0.000 title claims abstract description 62
- 238000012544 monitoring process Methods 0.000 title claims abstract description 58
- 238000012795 verification Methods 0.000 claims abstract description 30
- 239000007858 starting material Substances 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect 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
- 230000005641 tunneling Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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
Abstract
The invention relates to a continuous monitoring system for a coal mining machine after airborne gas monitoring power failure, which comprises a power failure 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 failure instrument module is electrically connected with a starter of the coal mining machine, and the airborne electromagnetic switch is electrically connected with an electronic control main transformer of the coal mining machine and the power failure instrument module through airborne cables respectively; the airborne cable is electrically connected with the airborne verification loop and the wall-mounted control loop respectively in a parallel connection mode, the airborne verification loop is connected with the airborne sensor in series, and the wall-mounted control loop is connected with the wall-mounted sensor in series, so that the electric control main transformer of the coal mining machine can simultaneously supply power to the power failure instrument module, the airborne electromagnetic switch, the airborne sensor, the airborne 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 wall-mounted monitoring system has the advantage that the gas content in the roadway can still be monitored 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 a coal mining machine after airborne gas monitoring and power failure.
Background
The existing airborne gas monitoring power-off instrument does not have a special power supply in design, the power supply is provided by a control transformer after the coal mining machine works with electricity, and a relay outputs a switch signal after the coal mining machine airborne gas monitoring power-off instrument collects a gas concentration signal to control the start-stop state of the coal mining machine. If the power-off instrument is not electrified in the power-off and shutdown state of the coal mining machine, the gas concentration cannot be continuously monitored and monitored. And when the gas is over-limit in the power-off and shutdown state of the coal mining machine, the power-off instrument is not electrified and can not give an alarm.
In addition, the output switch signal of the power outage instrument does not directly control the starter to start the control loop, but is input into a main controller plc of the coal mining machine, then the control center outputs the switch signal to switch on or off the self-protection control loop of the starter, when the gas exceeds the limit, the coal mining machine can still be started, and the coal mining machine can continuously run as long as a start button is manually pressed, so that 'gas electricity locking' in the true sense cannot be realized.
Because of the requirement of initializing the coal mining machine on-board gas monitoring power-off instrument, the time for an operator to press a start button is required to be long when the coal mining machine is started every time, so that the time for the coal mining machine to enter a normal working state is prolonged, and the starting rate of the coal mining machine is reduced.
Therefore, aiming at the defects, the continuous monitoring system for the coal mining machine after the power failure is realized during the onboard gas monitoring process is needed.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problems that the existing outage instrument cannot continuously monitor the gas condition and the locking effect is poor.
(II) technical scheme
In order to solve the technical problems, the invention provides a continuous monitoring system for a coal mining machine after airborne gas monitoring power failure, which comprises a power failure 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 failure instrument module is electrically connected with a starter of the coal mining machine, and the airborne electromagnetic switch is electrically connected with an electric control main transformer of the coal mining machine and the power failure instrument module through airborne cables respectively; the airborne cable is electrically connected with the airborne verification loop and the wall-mounted control loop respectively in a parallel connection mode, the airborne verification loop is connected with the airborne sensor in series, and the wall-mounted control loop is connected with the wall-mounted sensor in series, so that the electric control main transformer of the coal mining machine can simultaneously supply power to the power failure instrument module, the airborne electromagnetic switch, the airborne sensor, the airborne 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 to control the airborne electromagnetic switch to conduct current or break current.
As a further explanation of the present invention, preferably, 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 the wall-mounted sensor and the wall-mounted control loop are all installed on the side wall of the roadway.
As a further explanation of the present invention, it is preferable that 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 the electric control main transformer of the coal mining machine through an onboard cable, 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, and the gas monitoring power-off instrument is respectively connected with a starter of the coal mining machine and an onboard electromagnetic switch.
As a further description of the present invention, preferably, when the gas monitoring power-off instrument monitors 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 electric control main transformer of the coal mining machine does not flow into the starter, and the coal mining machine does not start.
As a further explanation of the present invention, it is preferable that a conduction indicator lamp is provided in the gas monitoring power-off instrument, and the conduction indicator lamp is turned on if a switch between the gas power-off instrument and the starter is closed; if the switch between the gas power-off instrument and the starter is disconnected, the conducting indicator lamp is turned off.
As a further explanation of the present invention, preferably, the onboard sensor and the wall-mounted sensor are both gas sensors, the onboard sensor, the power-off unit module and the wall-mounted sensor operate simultaneously, the onboard sensor feeds back a monitoring signal to the onboard verification loop, the wall-mounted sensor feeds back the monitoring signal to the wall-mounted control loop, and if the onboard verification loop or the wall-mounted control loop judges that gas exceeds the standard, the onboard electromagnetic switch is controlled to be turned off.
As a further description of the present invention, preferably, a wall-mounted cable is fixed on the side wall of the roadway, and the wall-mounted cable is connected with the wall-mounted control loop and the airborne cable.
As a further description of the present invention, it is preferable that a lighting lamp and a warning lamp are installed on the top surface of the roadway, and the surface of the warning lamp is blue or yellow.
As a further explanation of the present invention, it is preferable that the power cutoff instrument module is replaced if the warning lamp and the on indicator lamp are simultaneously turned on.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
the invention improves the problem that the on-board gas monitoring power-off instrument of the coal mining machine can work in an electrified way only when the coal mining machine is in an electrified running state, and can continuously monitor and control the gas concentration for more than 4 hours through the storage battery when the coal mining machine is in a power-off shutdown state. The storage battery is used for supplying power continuously, when the gas exceeds the limit after the coal mining machine is powered off and shut down, the coal mining machine-mounted gas monitoring power-off instrument can monitor and alarm, and the main controller is powered off, so that the coal mining machine cannot work. And a plurality of groups of verification loops are used for ensuring that the coal mining machine cannot be started when the gas exceeds the limit, and the working conditions of all equipment can be monitored simultaneously, so that a fault unit can be found in time and maintained or replaced when the fault occurs, and the high-efficiency work of the coal mining machine can be ensured on the premise of safe work.
Drawings
FIG. 1 is a general control logic diagram of the present invention;
fig. 2 is a structural diagram of the power-off instrument module of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The utility model provides a coal-winning machine carries gas monitoring outage back and lasts monitoring system, as shown in figure 1, including outage appearance module, machine carries electromagnetic switch, machine carries sensor, machine carries verification return circuit, hanging sensor and hanging control circuit, the starter electric connection of outage appearance module and coal-winning machine, for the starter power supply through outage appearance module, under normal conditions, presses the starter button, and the starter combined floodgate can make the coal-winning machine begin work. The airborne electromagnetic switch is respectively electrically connected with the electric control main transformer of the coal mining machine and the outage appearance module through the airborne cable, a switch is additionally arranged, the effect of a starter main switch is achieved, and the risk that the coal mining machine continues to work when the gas concentration exceeds the standard due to the failure of the outage appearance module can be reduced by matching with other electronic devices, so that the safety is improved. The airborne cable is electrically connected with the airborne verification loop and the wall-mounted control loop respectively in a parallel connection mode, the airborne verification loop is connected with the airborne sensor in series, and the wall-mounted control loop is connected with the wall-mounted sensor in series, so that the electric control main transformer of the coal mining machine can simultaneously supply power to the power failure instrument module, the airborne electromagnetic switch, the airborne sensor, the airborne 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 to control the airborne electromagnetic switch to conduct current or break current.
As shown in fig. 1, the outage instrument module, the airborne electromagnetic switch, the airborne sensor, the airborne cable and the airborne verification circuit are all installed on the coal mining machine and can move with the coal mining machine without being installed and arranged again by an operator, so that the working hours are saved. The wall-mounted sensor and the wall-mounted control circuit are both mounted 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 related monitoring device are matched to judge the gas content in the roadway more accurately. In addition, in the tunneling process of the coal mining machine, the wall-mounted sensor and the wall-mounted control circuit can be transferred simultaneously by moving the wood board in a mode that the wall-mounted sensor and the wall-mounted control circuit are both mounted on the wood board, and the dismounting difficulty is reduced.
Combine fig. 1, fig. 2, be equipped with gas monitoring outage appearance and power in the outage appearance module, the power passes through the automatically controlled main transformer electric connection of machine-carried cable and coal-winning machine, and gas monitoring outage appearance links to each other with the starter of coal-winning machine and machine-carried electromagnetic switch respectively, and the automatically controlled main transformer of coal-winning machine outwards exports 12V's voltage to supply power for power and gas monitoring outage appearance simultaneously through machine-carried electromagnetic switch, can enough make gas monitoring outage appearance normal work, can make the power accumulate again. The power supply is electrically connected with the gas monitoring power-off instrument, so that the gas monitoring power-off instrument continues to work after the coal mining machine is shut down by supplying power through the power supply. When the gas monitoring outage instrument monitors that the gas content in the roadway exceeds the standard, the switch of the control starter is switched off, so that the current of the electric control main transformer of the coal mining machine does not flow into the starter, and the coal mining machine is not started by pressing the switch of the starter. A conduction indicator lamp is arranged in the gas monitoring power-off instrument, and if a switch between the gas power-off instrument and the starter is closed, the conduction indicator lamp is on; if the switch between the gas outage appearance and the starter is disconnected, the switch-on indicator lamp is turned off, so that an operator can observe the state of the outage appearance conveniently, and the problem that whether the coal mining machine is not started is judged conveniently.
Combine fig. 1, fig. 2, airborne sensor and hanging sensor are gas sensor, are fixed with the hanging cable on the tunnel lateral wall, and the hanging cable links to each other with hanging control circuit and airborne cable for supply power for hanging sensor and control circuit. Light and warning light are installed to the tunnel top surface, the warning light divide into two kinds, the surface of two kinds of warning lights is blue or yellow respectively, the light is through hanging cable power supply and often bright, blue warning light also often brightens under normal conditions, when gas content exceeds standard, hanging sensor transmission signal of telecommunication to hanging control circuit, hanging control circuit control machine carries the disconnection of electromagnetic switch, and make light and blue warning light disconnection, control yellow warning light often bright, be used for following the visual operating personnel gas that reminds superscript directly perceivedly, can not open the coal-winning machine, in order to ensure the safety of personnel and equipment.
In addition, if switch on pilot lamp and blue warning light and light simultaneously, then explain the equal normal work of hanging sensor and outage appearance module, if yellow warning light with switch on the pilot lamp and light simultaneously, then explain that the outage appearance module breaks down, can not detect gas content, should change the outage appearance module. If the on-state indicator light is turned off, the airborne electromagnetic switch is also turned off, and the yellow warning light is not on, which indicates that the wall hanging detection part has a fault. The operation condition through all kinds of banks not only is used for directly reminding operating personnel gas content to exceed standard from the vision, but also can be used for judging equipment trouble, makes operating personnel can directly find the trouble place, in time and gets rid of fast, reduces and overhauls the degree of difficulty, further improves the security.
In conclusion, the airborne sensor, the outage instrument module and the wall-mounted sensor work simultaneously, the airborne sensor feeds monitoring signals back to the airborne verification loop, the wall-mounted sensor feeds the monitoring signals back to the wall-mounted control loop, if the airborne verification loop or the wall-mounted control loop judges that gas exceeds the standard, the airborne electromagnetic switch is controlled to be switched off, and meanwhile, the indicator lamp is turned off when the airborne verification loop or the wall-mounted control loop judges that gas exceeds the standard, so that the starter cannot start the coal mining machine to ensure safety when the starter is not powered. Combine the power in the outage appearance, can not only realize still can continuously monitoring the interior gas content of tunnel when the coal-winning machine cuts off the power supply, can also carry out dual fail-safe by airborne sensor and hanging sensor when the coal-winning machine circular telegram to avoid the outage appearance module to break down and lead to the operating personnel mistake for the starter normal power supply and think that the gas content does not exceed standard and start the risk of coal-winning machine, further improve the security.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a coal-winning machine carries and lasts monitoring system after gas monitoring outage which characterized in that: the on-board electromagnetic switch is electrically connected with an electric control main transformer of the coal mining machine and the outage instrument module respectively through an on-board cable; the airborne cable is electrically connected with the airborne verification loop and the wall-mounted control loop respectively in a parallel connection mode, the airborne verification loop is connected with the airborne sensor in series, and the wall-mounted control loop is connected with the wall-mounted sensor in series, so that the electric control main transformer of the coal mining machine can simultaneously supply power to the power failure instrument module, the airborne electromagnetic switch, the airborne sensor, the airborne 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 to control the airborne electromagnetic switch to conduct current or break current.
2. The system for continuously monitoring the coal mining machine-borne gas after power failure according to claim 1, characterized in that: the outage appearance module, machine carry electromagnetic switch, machine carry sensor, machine carry cable and machine carry verification return circuit all install on the coal-winning machine, and hanging sensor and hanging control circuit all install on the tunnel lateral wall.
3. The system for continuously monitoring the coal mining machine-borne gas after power failure according to claim 2, characterized in that: be equipped with gas monitoring outage appearance and power in the outage appearance module, the power passes through machine-carried cable and the automatically controlled main transformer electric connection of coal-winning machine, power and gas monitoring outage appearance electric connection to make coal-winning machine shut down back gas monitoring outage appearance pass through the power supply and continue work, gas monitoring outage appearance links to each other with the starter and the machine-carried electromagnetic switch of coal-winning machine respectively.
4. The system for continuously monitoring the coal mining machine-mounted gas after power failure according to claim 3, characterized in that: when the gas monitoring outage instrument monitors that the gas content in the roadway exceeds the standard, the switch of the control starter is switched off, so that the current of the electric control main transformer of the coal mining machine does not flow into the starter, and the coal mining machine does not start.
5. The system for continuously monitoring the coal mining machine-mounted gas after power failure according to claim 4, characterized in that: a conduction indicator lamp is arranged in the gas monitoring power-off instrument, and if a switch between the gas power-off instrument and the starter is closed, the conduction indicator lamp is on; if the switch between the gas power-off instrument and the starter is disconnected, the conducting indicator lamp is turned off.
6. The system for continuously monitoring the coal mining machine-borne gas after power failure according to claim 5, characterized in that: airborne sensor and hanging sensor are gas sensor, and airborne sensor, outage appearance module and hanging sensor simultaneous working, airborne sensor feed back monitoring signal to airborne verification return circuit, and the hanging sensor feeds back monitoring signal to hanging control circuit, if airborne verification return circuit or hanging control circuit judge that gas exceeds standard control airborne electromagnetic switch disconnection.
7. The system for continuously monitoring the coal mining machine-mounted gas after power failure according to claim 6, characterized in that: 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.
8. The system for continuously monitoring the coal mining machine-borne gas after power failure according to claim 7, characterized in that: the top surface of the roadway is provided with a lighting lamp and a warning lamp, and the surface of the warning lamp is blue or yellow.
9. The system for continuously monitoring the coal mining machine-mounted gas after power failure according to claim 8, characterized in that: if the warning light and the conducting indicating lamp are simultaneously on, the outage 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 true CN113933477A (en) | 2022-01-14 |
| CN113933477B CN113933477B (en) | 2024-04-19 |
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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 |
| 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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| CN113933477B (en) | 2024-04-19 |
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