CN114017090A - Intelligent control system and method for mine main fan - Google Patents
Intelligent control system and method for mine main fan Download PDFInfo
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- CN114017090A CN114017090A CN202111218298.XA CN202111218298A CN114017090A CN 114017090 A CN114017090 A CN 114017090A CN 202111218298 A CN202111218298 A CN 202111218298A CN 114017090 A CN114017090 A CN 114017090A
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- mine
- ventilation
- main fan
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- air
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Classifications
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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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- 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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- 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
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
Abstract
The invention provides an intelligent control system of a mine main fan, which comprises a mine ventilation three-dimensional simulation system, a sensor, a main fan and a mine intelligent ventilation regulation and control system; the invention also provides an intelligent control method of the mine main fan, which comprises the following steps: establishing a mine ventilation network resolving model by using mine ventilation three-dimensional simulation system software; monitoring working condition parameters of a main fan and air flow parameters of a main ventilation roadway, and transmitting monitoring data to a mine intelligent ventilation regulation and control system in time, so that real-time monitoring and display of mine ventilation parameters such as air quantity, air pressure, toxic and harmful gas concentration and temperature are realized, and mine ventilation and main fan operation working condition states are visually expressed; and the mine intelligent ventilation regulating and controlling system calculates the mine ventilation network in real time according to the monitoring data and the mine ventilation network resolving model. The invention constructs the mine intelligent ventilation system, realizes the intellectualization of the operation of the mine ventilation system, and realizes the real-time intelligent regulation and control of the main fan, the auxiliary fan and the like.
Description
Technical Field
The invention relates to the technical field of mine ventilation, in particular to an intelligent control system and method for a mine main fan.
Background
The mine ventilation system is one of eight systems for underground mining and is an important guarantee for the safety production of the mine mining. The purpose of mine ventilation is to provide fresh air for underground operators, and to remove dust, toxic and harmful gases and the like generated in the mining operation process, so as to create a good working environment for the underground operators.
In recent years, with the rapid development of mining industry, the mining depth of a mine is gradually increased, the network structure of a mine ventilation system is more and more complex, the complex ventilation network is solved by adopting a manual means, the development of the industry cannot be followed, the management is not convenient, and potential safety hazards are not easy to discover and eliminate in time.
With the intensive research and discussion on mine ventilation, many computer simulation management systems have been developed at home and abroad, so that the application of computers in mine production operation is also becoming common. Scientific and technical personnel at home and abroad obtain great achievements in the aspects of computer calculation of a mine ventilation network, three-dimensional visualization of a mine ventilation system, remote control of a main fan and the like. However, at the same time, there are also deficiencies in real-time solution of the ventilation network, intelligent control of the operation of the main fan, and the like. At present, the mine ventilation network resolving cannot be combined with a mine main fan and a wind flow parameter monitoring system, the wind flow parameters of a main ventilation roadway cannot be automatically adjusted by regulating and controlling the operation condition of the main fan according to the actual underground ventilation condition, and the intelligent control of the main fan is not realized.
Accordingly, there is a need for improvements in the art.
Disclosure of Invention
The invention aims to provide a high-efficiency intelligent control system and method for a mine main fan.
In order to solve the technical problem, the invention provides an intelligent control system of a mine main fan, which comprises a mine ventilation network simulation computing system, a sensor, a main fan and a mine intelligent ventilation regulation and control system;
the sensors comprise sensors of wind speed, wind pressure, temperature, CO concentration and the like;
the mine ventilation network simulation computing system is used for establishing a mine ventilation network resolving model;
the sensor is used for monitoring parameters such as air quantity, air pressure, concentration of toxic and harmful gases, temperature and the like of a key position in the well;
the main fan is used for mine ventilation;
the mine intelligent ventilation regulating and controlling system is used for controlling the main fan to operate.
Preferably, the mine ventilation network simulation computing system, the sensor and the main fan are in signal connection with the mine intelligent ventilation regulating and controlling system.
The invention also provides an intelligent control method of the mine main fan, which comprises the following steps:
step 1), establishing a mine ventilation network resolving model by using mine ventilation network simulation computing system software;
step 2), monitoring working condition parameters of a main fan and air flow parameters of a main ventilation roadway, and transmitting monitoring data to a mine intelligent ventilation regulating and controlling system in time, so that real-time monitoring and display of mine ventilation parameters, namely air volume, air pressure, concentration of toxic and harmful gases and temperature are realized, and the working condition states of mine ventilation and main fan operation are expressed visually;
step 3), the mine intelligent ventilation regulating and controlling system calculates the mine ventilation network in real time according to the monitoring data obtained in the step 2 and the mine ventilation network calculation model obtained in the step 1;
according to parameters such as air volume, air pressure, toxic and harmful gas concentration and temperature of key positions in the pit, the air intake of the mine and the air intake of an operation area are predicted in real time based on a mine ventilation intelligent algorithm model and the like to obtain predicted values, the predicted values are analyzed and compared with set values, whether operation parameters of a main fan, an air door switch and the like are adjusted or not is decided, and state indication of the main fan and the air door is displayed; decision instructions made by the mine intelligent ventilation regulating and controlling system are sent to control devices such as a main fan and the like through a central control platform.
Preferably, in step 1:
the mine ventilation network simulation computing system comprises a mine ventilation network resolving model, a natural wind pressure computing model and a main fan characteristic curve fitting model;
analyzing the change characteristics of the surface temperature and the underground temperature under different climatic conditions, and establishing a mine ventilation network resolving model by using a mine ventilation network simulation computing system;
the rule that the operation condition of the main fan of the mine changes along with the temperature is analyzed through experiments, and a natural wind pressure calculation model and a main fan characteristic curve fitting model are established by applying a mine ventilation network simulation calculation system.
Preferably, step 2 comprises the steps of:
2.1) installing corresponding sensors on the ventilation roadway needing sensing, monitoring the average wind speed, wind pressure, temperature, CO concentration and the like by the sensors, and sending the average wind speed, wind pressure, temperature, CO concentration and the like to an intelligent ventilation regulation and control system of the mine;
2.2) monitoring the running condition states of the main fan, such as the average wind speed, the wind pressure and the like; sending the data to a mine intelligent ventilation regulation and control system;
the air quantity can be obtained from the average air speed.
Preferably, in step 3:
the mine intelligent ventilation regulation and control system comprises the following functions:
the main screen displays a three-dimensional view of the mine ventilation system, and the three-dimensional view is marked with roadway airflow parameters;
the main screen displays the running state of the fan;
an alarm system;
and adjusting the air volume and the air pressure of the main fan by controlling the operating frequency of the motor of the main fan according to the sensed air speed and air pressure values.
Preferably, in step 3:
the set value is a threshold value of an air quantity parameter of an underground operation area which is preset in the mine intelligent ventilation regulation and control system; the mutual influence among the multiple main fans is considered during prediction; reasonably setting the air quantity required in the underground shift time in the mine ventilation intelligent regulation and control system;
when the predicted value is more than 25% of the set value, the intelligent algorithm model of the mine ventilation system sends an instruction to reduce the operating frequency of the main fan motor, so that the effect of ventilation and energy conservation is achieved; when the air quantity entering the operation area is less than 25% of the set value, the intelligent algorithm model of the mine ventilation system sends an instruction, the operation frequency of the main fan motor is properly increased, and the ventilation effect of the underground operation area is ensured.
Preferably, in step 3:
when the wind temperature monitored by the temperature sensor is greater than the early warning temperature and less than or equal to the warning temperature and the CO concentration reaches the early warning concentration, determining that a fire disaster is about to occur, and performing fire warning;
and when the wind temperature monitored by the temperature sensor is higher than the alarm temperature, judging that a fire disaster occurs, and performing fire alarm.
The intelligent control system and method for the mine main fan have the technical advantages that:
1. the intelligent mine ventilation system is constructed, so that the intelligent operation of the mine ventilation system is realized, and the main fan, the auxiliary fan and the like are intelligently regulated and controlled in real time;
2. the visual management of mine ventilation safety is realized on a dispatching room main control computer and a mobile phone;
3. risk early warning and forecasting are realized;
4. and the unattended operation of the main fan is realized.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
Embodiment 1, an intelligent control system of a mine main fan, comprising a mine ventilation network analog computation system, a sensor, a main fan and a mine intelligent ventilation regulation and control system;
the main fan is arranged in a wind tunnel at the wellhead of the mine return air shaft or an underground return air stone door;
the mine ventilation network simulation computing system, the sensor and the main fan are in signal connection with the mine intelligent ventilation regulating and controlling system;
the sensors comprise sensors of wind speed, wind pressure, temperature and the like;
the mine ventilation network simulation computing system is used for establishing a mine ventilation network real-time resolving model, including a mine ventilation network resolving model;
the sensor is used for monitoring parameters such as air quantity, air pressure, concentration of toxic and harmful gases, temperature and the like of a key position in the well; the concentration of toxic and harmful gases comprises CO concentration and the like;
the main fan is used for mine ventilation;
the mine intelligent ventilation regulation and control system is used for controlling the main fan;
an intelligent control system and method for a mine main fan comprises the following steps:
step 1), establishing a mine ventilation network resolving model by using mine ventilation network simulation computing system software;
the method mainly takes the following two points into consideration in the establishment of the mine ventilation network real-time calculation model:
the natural wind pressure time-varying law of the mine. A mine ventilation network simulation calculation system is applied, a mine ventilation network real-time calculation model is built, the surface and underground temperature change characteristics under different weather conditions are analyzed in an experiment, a natural wind pressure calculation module in mine ventilation network simulation calculation system software is applied to research the influence factors of mine natural wind pressure change, and the time-varying rule of mine natural wind pressure changing along with the surface temperature change in different seasons and day and night is disclosed.
The ventilation network comprises characteristic parameters of roadway branches (roadway length, roadway ventilation resistance coefficient and roadway cross-sectional area), roadway branch nodes, roadway branch numbers, main fan characteristic curves, main fan positions and numbers and the like.
And secondly, the operation working conditions of the main fan under the action of variable natural wind pressure. On the basis of revealing the mine natural wind pressure time-varying rule, the rule that the mine main fan operation condition changes with the temperature is analyzed, a natural wind pressure and main fan wind pressure coupling relation model is built according to the mine natural wind pressure value, the main fan characteristic curve, the mine ventilation resistance curve and the like under different temperature conditions, the time-varying rule that the mine main fan operation condition changes with the natural wind pressure is researched, and a foundation is laid for the determination of an intelligent control mechanism.
The temperature and humidity of the air on the earth surface, the bottom of the air inlet shaft and the bottom of the air return shaft under different season conditions are actually measured on site, the natural air pressure is calculated, and the time-varying law of the natural air pressure of the mine is revealed;
the method specifically comprises the following steps:
establishing a mine ventilation network simulation computing system model; the ventilation network simulation calculation can be carried out through the mine ventilation network simulation calculation system model, and the calculation result (wind speed, wind quantity, wind pressure, ventilation resistance and wind flow direction) of the ventilation network can be marked on the three-dimensional map.
The mine ventilation network simulation computing system model comprises a mine ventilation network resolving model, a natural wind pressure computing model and a main fan characteristic curve fitting model;
the prediction result of the mine ventilation network calculation model is the prediction of the air demand.
And 2) monitoring working condition parameters (air quantity, air pressure and the like) of a main fan and air flow parameters (air quantity, air pressure, temperature, CO concentration and the like) of a main ventilation roadway, and transmitting monitoring data to a mine intelligent ventilation regulation and control system in time, so that the mine air flow parameters including the air quantity, the air pressure, the concentration of toxic and harmful gases and the temperature are monitored and displayed in real time, and the working condition states of mine ventilation and main fan operation are expressed visually.
The method specifically comprises the following steps:
2.1) installing corresponding sensors on the ventilation roadway needing sensing, monitoring air quantity, air pressure, temperature, CO concentration, average air speed and the like by the sensors, and sending the monitored air quantity, air pressure, temperature, CO concentration, average air speed and the like to an intelligent mine ventilation regulation and control system;
the method specifically comprises the following steps: according to the arrangement of a mine mining area and the operation condition of a main fan and an auxiliary fan, sensors of wind speed, wind pressure, temperature and the like are reasonably arranged in a main fan room and an auxiliary fan room and a main ventilation tunnel (a mine air inlet and return shaft, an air inlet and return tunnel of an operation area and the like), and monitoring data are transmitted to a mine intelligent ventilation regulation and control system by utilizing an existing underground communication system (or newly erected optical fibers);
2.2) monitoring the running working condition states of the average wind speed, the wind pressure and the like of the fan (the main fan and the auxiliary fan) of the main fan, and monitoring the video monitoring of the state of the main air door; sending the data to a mine intelligent ventilation regulation and control system;
the air quantity can be obtained from the average air speed.
Step 3), the mine intelligent ventilation regulating and controlling system calculates the mine ventilation network in real time according to the monitoring data obtained in the step 2 and the mine ventilation network calculation model obtained in the step 1;
according to parameters such as air volume, air pressure, toxic and harmful gas concentration and temperature of key positions in the pit, the air intake of the mine and the air intake of an operation area are predicted in real time based on a mine ventilation intelligent algorithm model and the like to obtain predicted values, the predicted values are analyzed and compared with set values, whether operation parameters of a main fan, an air door switch and the like are adjusted or not is decided, and state indication of the main fan and the air door is displayed; decision instructions made by the mine intelligent ventilation regulating and controlling system are sent to control devices such as a main fan and the like through a central control platform.
Data such as air volume, air pressure, CO concentration, temperature and the like monitored by sensors such as air speed, air pressure, temperature, CO and the like reasonably arranged in a main fan room and a main ventilation tunnel are used as actual monitoring values; sensing (predicting) an air flow parameter value entering an operation area by using a mine ventilation intelligent algorithm model as a predicted value;
the set value is a threshold value of an air quantity parameter of an underground operation area which is preset in the mine intelligent ventilation regulation and control system; the mutual influence among the multiple main fans is considered during prediction; reasonably setting the air quantity required in the underground shift time in the mine ventilation intelligent regulation and control system;
for the set value of the air volume:
when the air volume (namely the predicted value) entering the operation area is more than 25% of the set value, the intelligent algorithm model of the mine ventilation system sends an instruction to reduce the running frequency of a main fan motor, so that the effect of ventilation and energy conservation is achieved; when the air quantity entering the operation area is less than 25% of the set value, the intelligent algorithm model of the mine ventilation system sends an instruction, the operation frequency of the main fan motor is properly increased, and the ventilation effect of the underground operation area is ensured.
In the actual production process, the design air demand of the underground operation area provided by the mine initial design text is provided;
the design air demand of a certain mining operation area is 20m3S, that is, when someone works, the fresh air quantity entering the working area should be not less than 20m3S; if downhole handoverThe fresh air quantity entering the working area can be less than 20m in the working time period3/s。
Manually setting a plurality of time periods as underground unmanned operation or duty-shifting time periods, and setting the rest time periods as underground working time; 15 to 17 o 'clock and 0 to 2 o' clock in the morning can be used as the underground shift time period.
When the predicted value of the average wind speed (namely the fresh air volume entering the working area) is more than 25m during the underground working time3S or less than 15m3When the temperature is in the second range, the intelligent analysis and decision system sends a regulation and control instruction to regulate the operating condition parameters of the main fan; in the period of unmanned operation or duty change, the running frequency of the main fan motor is directly reduced to meet the requirement of 12m3The air volume per second is only needed.
Set values for CO concentration and temperature:
when the wind temperature monitored by the temperature sensor is greater than the early warning temperature and less than or equal to the warning temperature and the CO concentration reaches the early warning concentration, determining that a fire disaster is about to occur, and performing fire warning;
and when the wind temperature monitored by the temperature sensor is higher than the alarm temperature, judging that a fire disaster occurs, and performing fire alarm.
The mutual influence among a plurality of main fan fans (including auxiliary fans) is considered during prediction; the air demand parameters of the underground shift and different season periods are reasonably set in the mine ventilation intelligent control system. The air demand of the operation areas in different seasons is the set value.
The mine intelligent ventilation regulation and control system comprises the following functions:
the main screen displays a mine ventilation system stereogram (marked with main ventilation parameters, a main fan and an air door switch);
the main screen displays the running state of the main fan (air volume, air pressure, motor running monitoring parameters (frequency, temperature and the like));
the position of the operating personnel and the total number of underground workers are displayed on a stereo map of the mine ventilation system;
alarm systems (main fan failure, disaster location and type);
and adjusting the air volume and the air pressure of the main fan by controlling the operating frequency of the motor of the main fan according to the sensed air speed and air pressure values.
Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (8)
1. The utility model provides an intelligent control system of mine owner fan which characterized in that: the system comprises a mine ventilation network simulation computing system, a sensor, a main fan and a mine intelligent ventilation regulation and control system;
the sensors comprise sensors of wind speed, wind pressure, temperature, CO concentration and the like;
the mine ventilation network simulation computing system is used for establishing a mine ventilation network resolving model;
the sensor is used for monitoring parameters such as air quantity, air pressure, concentration of toxic and harmful gases, temperature and the like of a key position in the well;
the main fan is used for mine ventilation;
the mine intelligent ventilation regulating and controlling system is used for controlling the main fan to operate.
2. The intelligent control system of the mine main fan as claimed in claim 1, wherein:
and the mine ventilation network analog computation system, the sensor and the main fan are in signal connection with the mine intelligent ventilation regulation and control system.
3. A method for intelligent control of a mine main fan using an intelligent control system of a mine main fan as claimed in any one of claims 1 to 2, characterized by: the method comprises the following steps:
step 1), establishing a mine ventilation network resolving model by using mine ventilation network simulation computing system software;
step 2), monitoring working condition parameters of a main fan and air flow parameters of a main ventilation roadway, and transmitting monitoring data to a mine intelligent ventilation regulating and controlling system in time, so that real-time monitoring and display of mine ventilation parameters, namely air volume, air pressure, concentration of toxic and harmful gases and temperature are realized, and the working condition states of mine ventilation and main fan operation are expressed visually;
step 3), the mine intelligent ventilation regulating and controlling system calculates the mine ventilation network in real time according to the monitoring data obtained in the step 2 and the mine ventilation network calculation model obtained in the step 1;
according to parameters such as air volume, air pressure, toxic and harmful gas concentration and temperature of key positions in the pit, the air intake of the mine and the air intake of an operation area are predicted in real time based on a mine ventilation intelligent algorithm model and the like to obtain predicted values, the predicted values are analyzed and compared with set values, whether operation parameters of a main fan, an air door switch and the like are adjusted or not is decided, and state indication of the main fan and the air door is displayed; decision instructions made by the mine intelligent ventilation regulating and controlling system are sent to control devices such as a main fan and the like through a central control platform.
4. The intelligent control method of the mine main fan as claimed in claim 3, wherein:
in step 1:
the mine ventilation network simulation computing system comprises a mine ventilation network resolving model, a natural wind pressure computing model and a main fan characteristic curve fitting model;
analyzing the change characteristics of the surface temperature and the underground temperature under different climatic conditions, and establishing a mine ventilation network resolving model by using a mine ventilation network simulation computing system;
the rule that the operation condition of the main fan of the mine changes along with the temperature is analyzed through experiments, and a natural wind pressure calculation model and a main fan characteristic curve fitting model are established by applying a mine ventilation network simulation calculation system.
5. The intelligent control method of the mine main fan as claimed in claim 4, wherein:
the step 2 comprises the following steps:
2.1) installing corresponding sensors on the ventilation roadway needing sensing, monitoring the average wind speed, wind pressure, temperature, CO concentration and the like by the sensors, and sending the average wind speed, wind pressure, temperature, CO concentration and the like to an intelligent ventilation regulation and control system of the mine;
2.2) monitoring the running condition states of the main fan, such as the average wind speed, the wind pressure and the like; sending the data to a mine intelligent ventilation regulation and control system;
the air quantity can be obtained from the average air speed.
6. The intelligent control method of the mine main fan as claimed in claim 5, wherein:
the mine intelligent ventilation regulation and control system comprises the following functions:
the main screen displays a three-dimensional view of the mine ventilation system, and the three-dimensional view is marked with roadway airflow parameters;
the main screen displays the running state of the fan;
an alarm system;
and adjusting the air volume and the air pressure of the main fan by controlling the operating frequency of the motor of the main fan according to the sensed air speed and air pressure values.
7. The intelligent control method of the mine main fan as claimed in claim 6, wherein:
in step 3:
the set value is a threshold value of an air quantity parameter of an underground operation area which is preset in the mine intelligent ventilation regulation and control system; the mutual influence among the multiple main fans is considered during prediction; reasonably setting the air quantity required in the underground shift time in the mine ventilation intelligent regulation and control system;
when the predicted value is more than 25% of the set value, the intelligent algorithm model of the mine ventilation system sends an instruction to reduce the operating frequency of the main fan motor, so that the effect of ventilation and energy conservation is achieved; when the air quantity entering the operation area is less than 25% of the set value, the intelligent algorithm model of the mine ventilation system sends an instruction, the operation frequency of the main fan motor is properly increased, and the ventilation effect of the underground operation area is ensured.
8. The intelligent control method of the mine main fan as claimed in claim 7, wherein:
when the wind temperature monitored by the temperature sensor is greater than the early warning temperature and less than or equal to the warning temperature and the CO concentration reaches the early warning concentration, determining that a fire disaster is about to occur, and performing fire warning;
and when the wind temperature monitored by the temperature sensor is higher than the alarm temperature, judging that a fire disaster occurs, and performing fire alarm.
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| CN202111218298.XA CN114017090A (en) | 2021-10-20 | 2021-10-20 | Intelligent control system and method for mine main fan |
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| CN202111218298.XA CN114017090A (en) | 2021-10-20 | 2021-10-20 | Intelligent control system and method for mine main fan |
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