CN115111183B - Coal mine fan control system - Google Patents
Coal mine fan control system Download PDFInfo
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- CN115111183B CN115111183B CN202210839694.2A CN202210839694A CN115111183B CN 115111183 B CN115111183 B CN 115111183B CN 202210839694 A CN202210839694 A CN 202210839694A CN 115111183 B CN115111183 B CN 115111183B
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- 239000003245 coal Substances 0.000 title claims description 19
- 238000012545 processing Methods 0.000 claims abstract description 57
- 238000001514 detection method Methods 0.000 claims description 52
- 238000005192 partition Methods 0.000 claims description 16
- 238000012216 screening Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 230000002159 abnormal effect Effects 0.000 description 9
- 238000011109 contamination Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/13—Purpose of the control system to control two or more engines simultaneously
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model relates to a colliery fan control system, it includes that main fan opens and stops module, secondary fan start-stop module, pneumatic fan start-stop module, data acquisition module, data processing module and first judgement module, and first judgement module is provided with the start priority of main fan, secondary fan and pneumatic fan, first judgement module is used for receiving the processing signal, according to received processing signal and combination start priority output first judgement signal to the main fan that control corresponds opens and stops module or secondary fan start-stop module or pneumatic fan and stop module work. This application has when main fan and secondary fan all break down, and the work of airing exhaust under the mine is guaranteed to the automatic switch-over pneumatic fan, uses in the pneumatic fan is applicable to explosion-proof environment moreover, and safety more can reduce the effect of unnecessary energy consumption energy saving environmental protection more.
Description
Technical Field
The application relates to the field of coal mine fans, in particular to a coal mine fan control system.
Background
At present, in order to meet the requirement of uninterrupted ventilation in a coal mine, a main local ventilator and an auxiliary local ventilator are generally arranged, a dual-power dedicated line is adopted for supplying power, and then a dual-power vacuum electromagnetic starter is used for respectively controlling the start and stop of the main local ventilator and the auxiliary local ventilator. When the main fan is in a working state during normal operation, the dual-power vacuum electromagnetic starter automatically starts the auxiliary fan when a superior power supply of the main fan is overhauled or has a fault; and when the main machine is overhauled or the fault is eliminated, the main machine is switched to the main fan to operate. When a main fan (or an auxiliary fan) upper-level power supply is overhauled, a starter loop for controlling the auxiliary fan (or the main fan) can not work due to fault tripping or main and auxiliary fan upper-level power supplies can not trip due to fault in the operation process, and the air can not be exhausted to the mine environment, so that the gas in a tunneling roadway exceeds the standard easily, and potential safety hazards are caused.
Disclosure of Invention
In order to guarantee the air exhaust effect of the coal mine fan, the application provides a coal mine fan control system.
The application provides a coal mine fan control system adopts following technical scheme:
the main fan starting and stopping module is used for controlling the starting and stopping of the main fan;
the auxiliary fan starting and stopping module is used for controlling the auxiliary fan to start and stop;
the pneumatic fan starting and stopping module is used for controlling the starting and stopping of the pneumatic fan;
the data acquisition module is used for acquiring various data information of the main fan, the auxiliary fan and the pneumatic fan in real time;
the data processing module is used for receiving the data information sent by the data acquisition module in real time, and judging whether the main fan, the auxiliary fan and the pneumatic fan can work normally or not according to the received data information; the output end of the data processing module outputs a corresponding processing signal according to the judgment result;
the first judgment module is provided with the starting priorities of the main fan, the auxiliary fan and the pneumatic fan, and is used for receiving the processing signals and outputting first judgment signals according to the received processing signals and in combination with the starting priorities so as to control the corresponding main fan start-stop module or auxiliary fan start-stop module or pneumatic fan start-stop module to work.
By adopting the technical scheme, the data processing module is used for receiving the data information sent by the data acquisition module in real time, when all the data information of the main fan are normal, the first judgment module preferentially controls the main fan start-stop module to work according to the received processing signal and the start priority, and at the moment, the main fan start-stop module controls the main fan to keep the start state; when the data processing module receives that the data information of the main fan is abnormal, the data processing module indicates that the main fan has a fault, the first judgment module controls the main fan start-stop module to stop the main fan at the moment, and then the first judgment module controls the auxiliary fan start-stop module to start the auxiliary fan; when the data processing module receives that all data information of the main fan is recovered to be normal, the first judging module controls the auxiliary fan starting and stopping module to stop the auxiliary fan, and then the first judging module controls the main fan starting and stopping module to start the main fan, so that automatic switching between the main fan and the auxiliary fan is realized; when the data processing module receives that the data information of the main fan and the auxiliary fan is abnormal, the first judging module controls the main fan starting and stopping module and the auxiliary fan starting and stopping module to stop the main fan and the auxiliary fan, and then the first judging module controls the pneumatic fan starting and stopping module to keep the pneumatic fan in an opening state; similarly, when the data processing module receives various data information of the main fan and returns to normal, the first judgment module controls the pneumatic fan start-stop module to stop the pneumatic fan, and then controls the main fan start-stop module to start the main fan; in addition, when the data processing module receives that the data information of the main fan is still in an abnormal state and the data information of the auxiliary fan is recovered to be normal, the first judgment module controls the pneumatic fan starting and stopping module to stop the pneumatic fan and then controls the auxiliary fan starting and stopping module to start the auxiliary fan, so that the automatic switching among the main fan, the auxiliary fan and the pneumatic fan is realized; when the main fan and the auxiliary fan are in failure, the pneumatic fan is automatically switched to ensure the air exhaust work under a mine, and the pneumatic fan is suitable for being used in an explosion-proof environment and is safer.
Optionally, the method further comprises:
the gas concentration detection module is used for detecting gas concentration values in the surrounding environment in real time, a multi-level gas concentration preset interval is arranged in the gas concentration detection module, and when the gas concentration values detected by the gas concentration detection module reach the corresponding gas concentration preset intervals, the gas concentration detection module outputs alarm signals of different levels according to different gas concentration preset intervals reached by the gas concentration values.
By adopting the technical scheme, the gas concentration detection module can monitor the gas concentration in the surrounding environment in real time, classify the gas concentration value detected in the current environment, output alarm signals of different grades according to the classification result, and the worker can accurately and visually judge the danger coefficient of the current underground gas concentration according to the different grades of the output alarm signals, so that the preparation for timely evacuation from a mine is made, and the life safety of the underground worker is improved.
Optionally, the method further comprises:
the wind speed control module is controlled by the alarm signal output by the gas concentration detection module, and outputs corresponding wind speed grade signals according to the received alarm signals of different grades so as to control the main fan, the auxiliary fan and the pneumatic fan in a working state to adjust to corresponding wind speed grades; the higher the level of the received alarm signal, the higher the wind speed level.
By adopting the technical scheme, the wind speed control module controls the main fan, the auxiliary fan and the pneumatic fan in the working state to be adjusted to the corresponding wind speed grades according to the received alarm signals of different grades along with the continuous rising of the gas concentration under the mine; the higher the grade of the received alarm signal is, the higher the corresponding wind speed grade is, and the gas under the mine can be more quickly discharged by increasing the wind speed grade; in addition, when the grade of the received alarm signal is lower, the gas concentration under the mine is indicated to be lower, and the corresponding wind speed grade is also reduced, so that unnecessary energy consumption can be reduced, and the energy-saving and environment-friendly effects are achieved; the wind speed grade is automatically adjusted according to the grade of the received alarm signal, on one hand, the air exhaust effect is guaranteed, and on the other hand, the whole control process is more intelligent through automatic adjustment.
Optionally, the method further includes:
the second judgment module is provided with a gas concentration warning value and a gas concentration stable value, and when the gas concentration value detected by the gas concentration detection module exceeds the gas concentration warning value, the second judgment module outputs a second judgment signal to control the main fan start-stop module, the auxiliary fan start-stop module and the pneumatic fan start-stop module to be simultaneously started, so that the main fan, the auxiliary fan and the pneumatic fan are kept in a starting state; when the gas concentration value detected by the gas concentration detection module is lower than the stable gas concentration value, the second judgment module stops working, the starting priority of the second judgment module is higher than that of the first judgment module, and when the second judgment module stops working, the second judgment module is switched to the first judgment module to work.
By adopting the technical scheme, when the detected gas concentration value exceeds the gas concentration warning value, the gas concentration in the current mine is indicated to be too high, and a great safety accident can be caused if the gas cannot be discharged in time; the second judgment module outputs a second judgment signal to control the main fan start-stop module, the auxiliary fan start-stop module and the pneumatic fan start-stop module to be started simultaneously so as to ensure that the main fan, the auxiliary fan and the pneumatic fan are kept in a starting state simultaneously, so that the gas under a mine can be discharged more rapidly, the gas discharge efficiency is greatly improved, and the safety of workers in the mine is greatly enhanced; when the gas concentration value detected by the gas concentration detection module is lower than the stable gas concentration value, the gas concentration under the mine is reduced to the stable value, the second judgment module stops working and the first judgment module is started, and the first judgment module closes the redundant fan, so that the redundant energy loss is reduced.
Optionally, the second determining module is further provided with a timing unit, the timing unit is configured to time a duration of a gas concentration value reaching a preset gas concentration interval, the timing unit is provided with a time threshold, and when the duration of the gas concentration value exceeds the time threshold, the second determining module will also output a second determining signal.
Through adopting above-mentioned technical scheme, when the duration that detects the gas concentration value in appointed gas concentration preset interval exceeded the time threshold, then showed that the exhaust efficiency of current gas is on the low side, the gas concentration value in the environment lasts and keeps at higher level, and the second judges the module at this moment and will be triggered once more, through keeping the opening state with main fan, auxiliary fan and pneumatic fan simultaneously to can guarantee the exhaust efficiency of gas, ensure that the gas under the mine can be discharged fast, in order to guarantee the operational environment safety under the mine.
Optionally, the method further includes:
the mobile fan control module is used for controlling the mobile fan to slide along a specified track paved in the mine;
the wind direction adjusting module is used for controlling the direction of an air outlet of the movable fan to rotate;
the gas concentration detection module comprises a plurality of groups of gas concentration detectors for collecting the gas concentration in the surrounding environment, and the gas concentration detectors are arranged on the sliding path of the movable fan; at least one group of gas concentration detectors is arranged on the movable fan.
By adopting the technical scheme, in order to more comprehensively guarantee the construction safety under the mine, the movable fan is arranged under the mine, and the movable position of the movable fan is controlled by the movable fan control module, so that the movable fan slides along the appointed track; the gas concentration detector arranged on the movable fan can realize movable detection of the gas concentration under the mine, on one hand, the detection of the gas concentration in an undeveloped area can be realized, and on the other hand, the more comprehensive detection of the gas concentration under the mine can be more flexibly and accurately carried out; when detecting the gas concentration in the appointed area when higher, accessible wind direction adjusting module rotates the air exit orientation of portable fan and adjusts, makes the air exit of portable fan just right with this region to can be more effective and quick with the gas discharge of the interior gathering of appointed area.
Optionally, the method further includes:
the input end of the transceiving processing unit is used for receiving the gas concentration values collected by the gas concentration detectors of each group, and screening out the area where the gas concentration detector with the highest gas concentration value is located according to the received gas concentration values of each group; the output end of the receiving and sending processing unit is used for sending positioning information of an area where the highest gas concentration detector is located to the mobile fan control module, and the mobile fan control module controls the mobile fan to move to a specified area according to the obtained positioning information.
By adopting the technical scheme, the input end of the receiving and sending processing unit is used for receiving the gas concentration values collected by the gas concentration detection ends of all groups in real time, when the receiving and sending processing unit screens out the region where the gas concentration detector with the highest gas concentration value is located, the output end of the receiving and sending processing unit sends the positioning information of the region where the highest gas concentration detector is located to the mobile fan control module, the mobile fan control module controls the mobile fan to automatically move to the designated region according to the obtained positioning information, therefore, timely and quick air exhaust of the region with the highest gas concentration in the mine is realized, and the potential safety hazard is further reduced.
Optionally, the system further comprises a plurality of groups of baffle plate plugging modules detachably mounted on the movable fan, wherein a driving module for driving the baffle plate plugging modules to rotate is arranged on each baffle plate plugging module, each group of baffle plate plugging modules is provided with a gas flow rate detection unit, and the gas flow rate detection unit is used for detecting the gas flow rate in the environment; the gas flow rate detection unit is provided with a gas flow rate alarm value, when the gas flow rate detection unit detects that the gas flow rate in the environment exceeds the gas flow rate alarm value, the gas flow rate detection unit sends a control signal to a specified driving module, and the driving module drives the partition plate plugging modules where the partition plate plugging modules are respectively located to rotate to the direction towards the gas flow rate detection unit which sends the control signal.
By adopting the technical scheme, when the gas flow velocity detection unit detects that the gas flow velocity in the environment exceeds the gas flow velocity warning value, the gas flow velocity detection unit indicates that a larger gas leakage accident possibly exists in the current area, at the moment, the driving module drives the partition plate plugging modules respectively to rotate to the direction towards the gas flow velocity detection unit which sends the control signal according to the position of the gas flow velocity detection unit which sends the control signal, and a gas barrier is formed through the partition plate plugging modules, so that the diffusion speed of gas to the periphery can be further inhibited, the escape of workers in a mine is guaranteed, and the time is strived for the escape work.
Optionally, the method further includes:
and the UPS power supply module is controlled by the pneumatic fan starting and stopping module and is used for supplying power to the pneumatic fan.
By adopting the technical scheme, the UPS power supply module can provide uninterrupted power supply for the pneumatic fan, can supply high-quality power supply for the pneumatic fan and effectively protect the pneumatic fan; therefore, the normal starting of the pneumatic fan can be ensured when the main fan and the auxiliary fan are both powered off.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the main fan and the auxiliary fan are in failure, the pneumatic fan is automatically switched to ensure the air exhaust work under a mine, and the pneumatic fan is suitable for being used in an explosion-proof environment, so that the safety is higher;
2. the wind speed grade is automatically adjusted according to the grade of the received alarm signal, so that on one hand, the air exhaust effect is ensured, and on the other hand, the whole control process is more intelligent through automatic adjustment;
3. when the second judgment module is triggered, the main fan, the auxiliary fan and the pneumatic fan are kept in an opening state at the same time, so that the gas discharge efficiency can be ensured, the gas under a mine can be rapidly discharged, and the safety of the working environment under the mine can be ensured.
Drawings
Fig. 1 is a partial structure flowchart of the present application.
FIG. 2 is a flow chart illustrating a partial structure of a gas concentration detection module according to an embodiment of the present disclosure.
Fig. 3 is a flowchart highlighting a partial structure of a second determining module according to an embodiment of the present application.
Fig. 4 is a flow chart illustrating a partial structure of a transceiver processing unit according to an embodiment of the present application.
Fig. 5 is a flow chart showing a partial structure of a partition plugging module according to an embodiment of the present application.
Description of reference numerals: 1. a main fan starting and stopping module; 10. a separator plate plugging module; 11. a drive module; 12. a gas flow rate detection unit; 13. a UPS power supply module; 2. the auxiliary fan starting and stopping module; 3. a pneumatic fan start-stop module; 4. a data acquisition module; 5. a data processing module; 6. a first judgment module; 7. a gas concentration detection module; 71. a second judgment module; 72. a timing unit; 73. a gas concentration detector; 8. a wind speed control module; 9. a mobile blower control module; 91. a wind direction adjusting module; 92. a transceiving processing unit.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses coal mine fan control system. Referring to fig. 1 and 2, a coal mine fan control system includes: the system comprises a main fan starting and stopping module 1 for controlling the starting and stopping of a main fan, an auxiliary fan starting and stopping module 2 for controlling the starting and stopping of an auxiliary fan, a pneumatic fan starting and stopping module 3 for controlling the starting and stopping of a pneumatic fan, a data acquisition module 4, a data processing module 5 and a first judgment module 6. Each module related in this embodiment may include a central processing unit such as a CPU or MPU, or a system constructed with the CPU or MPU as a core, including hardware or software, and people can freely control each module by programming to operate according to their wishes. The data transmission among all the modules can adopt optical fiber communication, is anti-electromagnetic interference, has no explosion risk, and ensures that the normal work of other loops is not influenced when any module breaks down.
As shown in fig. 1 and fig. 2, the data collecting module 4 is configured to collect various data information of the main fan, the auxiliary fan, and the pneumatic fan in real time, where the collected data information includes, but is not limited to: working voltage value, working current value, leakage resistance value, whether short circuit occurs and whether overload occurs. The data processing module 5 is used for receiving the data information sent by the data acquisition module 4 in real time, and the data processing module 5 judges whether the main fan, the auxiliary fan and the pneumatic fan can work normally according to the received data information. The output end of the data processing module 5 outputs a corresponding processing signal to the first judging module 6 according to the judging result.
As shown in fig. 1 and 2, the first determination module 6 is provided therein with a main fan, an auxiliary fan, and air
The starting priority of the dynamic fan is as follows: the starting priority of the main fan > the starting priority of the auxiliary fan > the starting priority of the pneumatic fan. After receiving the processing signal, the first judgment module 6 outputs a first judgment signal in combination with the start priority to control the corresponding main fan start-stop module 1, auxiliary fan start-stop module 2 or pneumatic fan start-stop module 3 to work.
The specific control process of the first judging module 6 is as follows: when a processing signal that all data information of the main fan are normal is received, the first judging module 6 preferentially controls the main fan start-stop module 1 to work, and at the moment, the main fan start-stop module 1 controls the main fan to keep a start state. When a processing signal that data information of the main fan is abnormal is received, the main fan is indicated to have a fault, at the moment, the first judgment module 6 controls the main fan start-stop module 1 to stop the main fan, and then the first judgment module 6 controls the auxiliary fan start-stop module 2 to start the auxiliary fan. When receiving a processing signal that each item of data information of the main fan recovers to be normal, the first judging module 6 controls the auxiliary fan start-stop module 2 to stop the auxiliary fan, and then the first judging module 6 controls the main fan start-stop module 1 to start the main fan again, so that automatic switching between the main fan and the auxiliary fan is realized. When receiving processing signals that the data information of the main fan and the auxiliary fan is abnormal, the first judging module 6 controls the main fan start-stop module 1 and the auxiliary fan start-stop module 2 to keep the main fan and the auxiliary fan in a stop state, and then the first judging module 6 controls the pneumatic fan start-stop module 3 to keep the pneumatic fan in an open state. Similarly, when receiving a processing signal that each item of data information of the main fan recovers to be normal, the first judging module 6 controls the pneumatic fan start-stop module 3 to stop the pneumatic fan, and then controls the main fan start-stop module 1 to start the main fan. In addition, when the data information of the main fan is still in an abnormal state and the data information of the auxiliary fan is recovered to a normal processing signal, the first judgment module 6 controls the pneumatic fan start-stop module 3 to stop the pneumatic fan, and then controls the auxiliary fan start-stop module 2 to start the auxiliary fan, so that the automatic switching among the main fan, the auxiliary fan and the pneumatic fan is realized. When the main fan and the auxiliary fan are in failure, the pneumatic fan is automatically switched to ensure the air exhaust work under a mine, the pneumatic fan adopts the intrinsic safety type electromagnetic valve to control the start and stop, and no spark is generated in the opening or closing process, so that the air exhaust device is suitable for being used in an explosion-proof environment, and the safety of the start and stop work is ensured.
As shown in fig. 2 and 3, the system further includes a gas concentration detection module 7 for detecting a gas concentration value in the surrounding environment in real time, a multi-stage gas concentration preset interval is provided in the gas concentration detection module 7, and the number of the gas concentration preset intervals and a specific interval value can be manually input through programming. When the gas concentration detection module 7 detects that the gas concentration value in the surrounding environment reaches the corresponding preset gas concentration interval, the gas concentration detection module 7 outputs alarm signals of different grades according to different preset gas concentration intervals reached by the gas concentration value. Specific alarm signals can be divided into, but are not limited to: mild contamination, moderate contamination, and severe contamination. The gas concentration detection module 7 comprises a plurality of groups of gas concentration detectors 73 used for collecting gas concentrations in surrounding environments, and when the gas concentrations in a mine need to be detected, the gas concentration detectors 73 are sequentially arranged at intervals along the depth direction of the mine, so that the gas concentrations at different depths in the mine can be collected in a segmented mode.
As shown in fig. 2 and 3, the wind speed control module 8 is further included, and is controlled by the alarm signal output by the gas concentration detection module 7, and the wind speed control module 8 outputs corresponding wind speed grade signals according to the received alarm signals of different grades to control the main fan, the auxiliary fan and the pneumatic fan in the working state to adjust to corresponding wind speed grades. Specifically, the method comprises the following steps: when the wind speed control module 8 receives the alarm signal of light pollution, the wind speed control module 8 outputs a light wind grade signal to control the wind speed of the appointed fan in work to be adjusted to a light wind state; when the wind speed control module 8 receives the alarm signal of moderate pollution, the wind speed control module 8 outputs a wind stroke grade signal to control the wind speed of the appointed fan in work to be adjusted to a wind stroke state; when the wind speed control module 8 receives the alarm signal of heavy pollution, the wind speed control module 8 outputs a strong wind grade signal to control the wind speed of the appointed fan in work to be adjusted to a strong wind state. That is, the higher the level of the alarm signal received by the wind speed control module 8 is, the higher the wind speed level output by the wind speed control module 8 will be.
As shown in fig. 1 and 3, the gas concentration monitoring device further includes a second determining module 71, and a gas concentration warning value and a gas concentration stabilizing value are disposed in the second determining module 71, where the gas concentration warning value is greater than the gas concentration stabilizing value. The input end of the second judgment module 71 is configured to receive a gas concentration value acquired by the gas concentration detector 73, the second judgment module 71 is configured to compare the received gas concentration value with a gas concentration warning value and a gas concentration stable value one by one, and when the received gas concentration value in any region exceeds the gas concentration warning value, the second judgment module 71 outputs a second judgment signal to control the main fan start-stop module 1, the auxiliary fan start-stop module 2 and the pneumatic fan start-stop module 3 to be simultaneously started, so that the main fan, the auxiliary fan and the pneumatic fan are simultaneously kept in a start state. When the received gas concentration values are all lower than the stable gas concentration value, the second determination module 71 is switched to the closed state. It should be mentioned that the start priority of the second judging module 71 is higher than the start priority of the first judging module 6, and when the second judging module 71 is in the triggering state, the first judging module 6 automatically switches to the off state. When the second determination module 71 is in the off state, the first determination module 6 will automatically switch to the trigger state.
As shown in fig. 1 and 3, a timing unit 72 is further disposed in the second determining module 71, the timing unit 72 is configured to time a duration of a gas concentration value reaching the preset gas concentration range, the timing unit 72 is provided with a time threshold, and when the duration of the gas concentration value exceeds the time threshold, the second determining module 71 will also output a second determining signal. The specific range and the specific time threshold of the specified gas concentration preset interval can be manually input according to the actual application environment, and similarly, when the received gas concentration values are all lower than the gas concentration stable value, the second judgment module 71 is switched to the closed state.
As shown in fig. 3 and 4, the mine shaft further comprises a mobile fan control module 9 and a wind direction adjusting module 91, wherein the mobile fan control module 9 is used for controlling a driving source on the mobile fan to start and stop, the driving source can adopt an intrinsic safety type motor, the mobile fan is driven by the driving source to slide along a specified track laid in a mine, the mobile fan is arranged on the track in a rolling manner by adopting a roller, and a rubber sleeve is wrapped outside the roller to prevent spark generation in the rolling process. It should be mentioned that at least one set of gas concentration detectors 73 is arranged on the mobile fan, and the gas concentration detectors 73 will follow the mobile fan to move along the laying direction of the track, which can be laid along the depth direction of the mine. Wind direction adjustment module 91 is used for controlling the driving piece on the portable fan to open and stop, and the driving piece can adopt this ampere of type motor, and the driving piece is used for controlling the air exit orientation of portable fan and rotates.
As shown in fig. 3 and fig. 4, the system further includes a transceiving processing unit 92, an input end of the transceiving processing unit 92 is configured to receive gas concentration values collected by the gas concentration detectors 73 of each group, and screen out an area where the gas concentration detector 73 with the highest gas concentration value is located according to the received gas concentration values of each group. After the transceiving processing unit 92 acquires the location information of the region where the screened gas concentration detector 73 is located, the output end of the transceiving processing unit 92 sends the location information of the region where the highest gas concentration detector 73 is located to the mobile fan control module 9, and then the mobile fan control module 9 controls the mobile fan to move to the region according to the acquired location information.
As shown in fig. 5, the air blower further includes a plurality of groups of partition plugging modules 10 detachably mounted on the mobile air blower, and each partition plugging module 10 includes a mounting rack detachably mounted on the mobile air blower and a partition rotatably disposed on the mounting rack. Be provided with on the mounting bracket and be used for driving baffle pivoted drive module 11, drive module 11's driving source can adopt this ampere of type motor or pneumatic motor, all is provided with gaseous velocity of flow detecting element 12 on every group baffle, and gaseous velocity of flow detecting element 12 is arranged in detecting the current gaseous velocity of flow towards the environment, is provided with gaseous velocity of flow warning value on the gaseous velocity of flow detecting element 12. When the gas flow rate detection unit 12 detects that the gas flow rate currently facing the environment exceeds the gas flow rate alarm value, the gas flow rate detection unit 12 sends a control signal to the driving modules 11 on the remaining partition plate plugging modules 10, and then the remaining driving modules 11 drive the partition plates on the respective partition plate plugging modules 10 to rotate to the direction facing the gas flow rate detection unit 12 sending the control signal according to the position of the gas flow rate detection unit 12 sending the control signal.
As shown in fig. 2, the system further includes a UPS power supply module 13, the UPS power supply module 13 is controlled by the pneumatic fan start-stop module 3, and the UPS power supply module 13 is configured to supply power to the pneumatic fan.
The implementation principle of the coal mine fan control system in the embodiment of the application is as follows: the data processing module 5 is used for receiving data information sent by the data acquisition module 4 in real time, when all items of received data information of the main fan are normal, the first judgment module 6 preferentially controls the main fan start-stop module 1 to work according to the received processing signals and the start priority, and at the moment, the main fan start-stop module 1 controls the main fan to keep in a start state. When the data processing module 5 receives that the data information of the main fan is abnormal, the data processing module indicates that the main fan has a fault, at the moment, the first judging module 6 controls the main fan start-stop module 1 to stop the main fan, and then the first judging module 6 controls the auxiliary fan start-stop module 2 to start the auxiliary fan. After the data processing module 5 receives various data information of the main fan and recovers to normal, the first judging module 6 controls the auxiliary fan start-stop module 2 to stop the auxiliary fan, and then the first judging module 6 controls the main fan start-stop module 1 to start the main fan, so that automatic switching between the main fan and the auxiliary fan is realized. When the data processing module 5 receives that the data information of the main fan and the auxiliary fan is abnormal, the first judging module 6 controls the main fan start-stop module 1 and the auxiliary fan start-stop module 2 to stop the main fan and the auxiliary fan, and then the first judging module 6 controls the pneumatic fan start-stop module 3 to keep the pneumatic fan in an open state. Similarly, when the data processing module 5 receives various data information of the main fan and returns to normal, the first judging module 6 controls the pneumatic fan start-stop module 3 to stop the pneumatic fan, and then controls the main fan start-stop module 1 to start the main fan. In addition, when the data processing module 5 receives that the data information of the main fan is still in an abnormal state and the data information of each item of the auxiliary fan is recovered to be normal, the first judging module 6 controls the pneumatic fan start-stop module 3 to stop the pneumatic fan, and then controls the auxiliary fan start-stop module 2 to start the auxiliary fan, so that the automatic switching among the main fan, the auxiliary fan and the pneumatic fan is realized. When the main fan and the auxiliary fan are in failure, the pneumatic fan is automatically switched to ensure the air exhaust work under a mine, and the pneumatic fan is suitable for being used in an explosion-proof environment and is safer.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A coal mine fan control system is characterized by comprising:
the main fan starting and stopping module (1) is used for controlling the starting and stopping of the main fan;
the auxiliary fan starting and stopping module (2) is used for controlling the auxiliary fan to start and stop;
the pneumatic fan starting and stopping module (3) is used for controlling the starting and stopping of the pneumatic fan;
the data acquisition module (4) is used for acquiring various data information of the main fan, the auxiliary fan and the pneumatic fan in real time;
the data processing module (5) is used for receiving the data information sent by the data acquisition module (4) in real time, and the data processing module (5) judges whether the main fan, the auxiliary fan and the pneumatic fan can work normally or not according to the received data information; the output end of the data processing module (5) outputs a corresponding processing signal according to the judgment result;
the first judgment module (6) is provided with a starting priority of the main fan, the auxiliary fan and the pneumatic fan, and the first judgment module (6) is used for receiving the processing signal and outputting a first judgment signal according to the received processing signal and by combining the starting priority so as to control the corresponding main fan start-stop module (1), auxiliary fan start-stop module (2) or pneumatic fan start-stop module (3) to work;
the mobile fan control module (9) is used for controlling the mobile fan to slide along a specified track paved in the mine;
the device is characterized by further comprising a plurality of groups of partition plate plugging modules (10) which are detachably mounted on the movable fan, wherein a driving module (11) for driving the partition plate plugging modules (10) to rotate is arranged on each partition plate plugging module (10), each group of partition plate plugging modules (10) is provided with a gas flow rate detection unit (12), and each gas flow rate detection unit (12) is used for detecting the gas flow rate in the environment; the gas flow rate detection unit (12) is provided with a gas flow rate alarm value, when the gas flow rate detection unit (12) detects that the gas flow rate in the environment exceeds the gas flow rate alarm value, the gas flow rate detection unit (12) sends a control signal to a specified driving module (11), the driving module (11) drives the partition plate plugging module (10) to rotate to the direction where the gas flow rate detection unit (12) which sends the control signal is located according to the position where the gas flow rate detection unit (12) which sends the control signal is located.
2. The coal mine fan control system of claim 1, further comprising:
the gas concentration detection module (7) is used for detecting the gas concentration value in the surrounding environment in real time, a multi-level gas concentration preset interval is arranged in the gas concentration detection module (7), when the gas concentration value detected by the gas concentration detection module (7) reaches the corresponding gas concentration preset interval, the gas concentration detection module (7) outputs alarm signals of different levels according to the fact that the gas concentration preset interval where the gas concentration value reaches is different.
3. The coal mine fan control system of claim 2, further comprising:
the wind speed control module (8) is controlled by the alarm signal output by the gas concentration detection module (7), and the wind speed control module (8) outputs corresponding wind speed grade signals according to the received alarm signals of different grades so as to control the main fan, the auxiliary fan and the pneumatic fan in a working state to adjust to corresponding wind speed grades; the higher the level of the received alarm signal, the higher the wind speed level.
4. The coal mine fan control system of claim 2, further comprising:
the second judgment module (71) is provided with a gas concentration warning value and a gas concentration stable value, when the gas concentration value detected by the gas concentration detection module (7) exceeds the gas concentration warning value, the second judgment module (71) outputs a second judgment signal to control the main fan start-stop module (1), the auxiliary fan start-stop module (2) and the pneumatic fan start-stop module (3) to be started simultaneously, so that the main fan, the auxiliary fan and the pneumatic fan keep the starting states; when the gas concentration value detected by the gas concentration detection module (7) is lower than the stable gas concentration value, the second judgment module (71) stops working, the starting priority of the second judgment module (71) is higher than that of the first judgment module (6), and when the second judgment module (71) stops working, the first judgment module (6) is switched to work.
5. The coal mine fan control system of claim 4, wherein: the second judgment module (71) is further provided with a timing unit (72), the timing unit (72) is used for timing the duration of the gas concentration value reaching the specified preset gas concentration interval, the timing unit (72) is provided with a time threshold, and when the duration of the gas concentration value exceeds the time threshold, the second judgment module (71) outputs a second judgment signal.
6. The coal mine fan control system of claim 2, further comprising:
the wind direction adjusting module (91) is used for controlling the direction of an air outlet of the movable fan to rotate;
the gas concentration detection module (7) comprises a plurality of groups of gas concentration detectors (73) used for collecting the gas concentration in the surrounding environment, and the gas concentration detectors (73) are arranged on the sliding path of the movable fan; at least one group of gas concentration detectors (73) is arranged on the movable fan.
7. The coal mine fan control system of claim 6, further comprising:
the input end of the transceiving processing unit (92) is used for receiving the gas concentration values collected by the gas concentration detectors (73) of all groups, and screening the area where the gas concentration detector (73) with the highest gas concentration value is located according to the received gas concentration values of all groups; the output end of the transceiving processing unit (92) is used for sending positioning information of an area where the highest gas concentration detector (73) is located to the mobile fan control module (9), and the mobile fan control module (9) controls the mobile fan to move to a specified area according to the obtained positioning information.
8. The coal mine fan control system of claim 1, further comprising:
the UPS power supply module (13) is controlled by the pneumatic fan starting and stopping module (3), and the UPS power supply module (13) is used for supplying power to the pneumatic fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210839694.2A CN115111183B (en) | 2022-07-18 | 2022-07-18 | Coal mine fan control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210839694.2A CN115111183B (en) | 2022-07-18 | 2022-07-18 | Coal mine fan control system |
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| CN115111183A CN115111183A (en) | 2022-09-27 |
| CN115111183B true CN115111183B (en) | 2022-12-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203206156U (en) * | 2013-04-10 | 2013-09-18 | 南京双京电器集团有限公司 | Three-power supply vacuum electromagnetic starter for coal mine air blower |
| CN205805978U (en) * | 2016-06-20 | 2016-12-14 | 中国神华能源股份有限公司 | Electromagnetic starter for coal mine blower system |
| CN108590765A (en) * | 2018-03-26 | 2018-09-28 | 山东大学 | Ventilation intelligent monitor system and method suitable for the tunneling and underground engineering construction time |
| CN113371084A (en) * | 2021-06-16 | 2021-09-10 | 中国矿业大学 | Track bionical robot that dilutes gaseous underground gas |
| CN113565553B (en) * | 2021-07-22 | 2023-06-27 | 中交第二公路工程局有限公司 | Ventilation system and general type gas tunnel comprehensive rapid disposal system |
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