CN110067764B - Remote switching and intelligent regulation and control device for local ventilator of coal mine and control method - Google Patents
Remote switching and intelligent regulation and control device for local ventilator of coal mine and control method Download PDFInfo
- Publication number
- CN110067764B CN110067764B CN201910293029.6A CN201910293029A CN110067764B CN 110067764 B CN110067764 B CN 110067764B CN 201910293029 A CN201910293029 A CN 201910293029A CN 110067764 B CN110067764 B CN 110067764B
- Authority
- CN
- China
- Prior art keywords
- ventilation
- monitoring
- local
- fan
- parameters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- 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
-
- 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
- F05D2260/00—Function
- F05D2260/81—Modelling or simulation
Abstract
A remote switching and intelligent regulation and control device for a local ventilator of a coal mine and a control method thereof are disclosed, which comprise a ground monitoring center, an industrial Ethernet communication system, a local ventilator frequency conversion monitoring system and a tunneling working surface environment monitoring system; the ground monitoring center consists of a central station and a server; the industrial Ethernet communication system consists of an optical fiber network, an Ethernet module and a switch; the fan frequency conversion monitoring system consists of a fan working condition monitoring sensor, a monitoring substation and a frequency conversion control component; the environment monitoring system for the tunneling working face consists of a ventilation parameter monitoring sensor and a monitoring substation. The system realizes the unattended operation of local ventilation by remotely and continuously switching the local ventilation fans in a inching mode; the required air volume is analyzed and predicted through the monitoring data of the tunneling working face, the optimal air volume supply and demand matching model of the tunneling working face is established, the required operating frequency is searched in real time according to a characteristic curve library of the local ventilator, intelligent regulation and control are carried out, and remote visualization of local ventilation and safety and energy conservation are realized.
Description
Technical Field
The invention belongs to the field of air volume regulation and control of coal mine ventilation systems, and particularly relates to a remote switching and intelligent regulation and control device and a control method for a local ventilator of a coal mine.
Background
The mine ventilation system is one of the most important systems for safety production of coal mines, can continuously deliver oxygen for underground workers, is the most effective means for diluting and discharging underground toxic and harmful gases, and is an important guarantee for safety, health and labor of the underground workers and disaster prevention and resistance. The coal mine underground environment changes all the time, so that the air supply system is required to change dynamically. The local ventilation place is the safety protection measure of double fans, double power supply, wind power locking and gas power locking, but at present, the mine adopts a mode of manually switching the fans to a local working surface, so that the required time is long, the production efficiency is low, and the probability of accidents is high. The invention can realize the remote automatic switching of the local ventilator, can monitor the running state of the ventilator on the ground in real time, can switch in time once the ventilator fails, ensures the safe production of the driving working surface, continuously produces and improves the production efficiency.
Mines at home and abroad generally adopt an artificial mode to collect local ventilation parameters, and the workload is very huge. Therefore, a large amount of manpower and financial resources are wasted, local ventilation parameters are difficult to accurately obtain, and the potential safety hazards existing in the process of staff are difficult to find in time, so that the probability of potential safety hazard steering accidents is increased. At present, a tunneling working face supplies air to the working face in a 'one-wind blowing' mode, a large amount of electric power resources are wasted, and a lot of potential safety hazards exist. In order to meet the economic development requirement of a coal market and reduce the occurrence of serious accidents of coal mines in China, the construction of a high-yield high-efficiency intensive mine is a necessary trend of coal development in China, the safe and green mining of the mine is a goal of fighting, the abnormal intelligent regulation theory and technology of a ventilation system of the coal mine become a key direction for the research of improving the disaster prevention and reduction capability of the ventilation system, the adjustment of a current frequency converter is staged adjustment, and the adjustment is not linked with the intelligent wind volume adjustment; the existing local wind resistance regulation is mostly manual regulation, and is only mechanical automatic regulation of local wind quantity, and the regulation of an intelligent system of a full wind network system is not formed.
The invention content is as follows:
the invention aims to solve the technical problem of providing a device and a method for automatically switching and intelligently regulating and controlling a local ventilator of a coal mine, which are simple and convenient in method, high in sensitivity and good in using effect, aiming at the defects of the background technology, organically combining a coal mine monitoring and controlling system with a plurality of field knowledge such as computer technology, PLC control technology, intelligent air quantity regulating and controlling technology, optimization selection algorithm of regulating branches, intelligent software development and the like, realizing that the system switches the local ventilator in a remote continuous inching manner, and realizing unattended operation of local ventilation; the air demand is analyzed and predicted through the monitoring data of the tunneling working face, the optimal air supply and demand matching model of the tunneling working face is established, the required operating frequency is searched in real time according to the characteristic curve library of the local ventilator, intelligent regulation and control are carried out, remote visualization and safety and energy conservation of local ventilation are realized, and disaster accidents caused by various abnormal ventilation can be effectively prevented and treated.
The invention adopts the following technical scheme to solve the technical problems
A remote switching and intelligent regulation and control device for a local ventilator of a coal mine comprises a ground monitoring center, an industrial Ethernet communication system, an underground local fan frequency conversion monitoring system and an underground tunneling working surface ventilation monitoring system;
the system comprises an underground tunneling working face ventilation monitoring system, a working face air supply and demand matching model and a working face air supply and demand matching model, wherein the underground tunneling working face ventilation monitoring system is used for monitoring the ventilation and environmental parameters of the underground tunneling working face in real time, studying and judging and predicting the air demand and determining the working face air supply and demand matching model;
the underground local fan frequency conversion monitoring system is used for monitoring the operating condition parameters of the local fan in real time and finishing the regulation and control of the operating frequency of the local fan;
the industrial Ethernet communication system is used for transmitting the acquired environmental parameters, ventilation parameters, the operating condition parameters of the local fan and the control instructions of the ground monitoring center of the underground tunneling working face;
the ground monitoring center is used for monitoring the operating parameters of local fans of all the tunneling working faces of the whole coal mine in real time, quickly realizing remote switching and intelligent control when ventilation is abnormal, recovering the safety state and alarming when abnormality cannot be eliminated.
As a further preferable scheme of the remote switching and intelligent regulation and control device and method for the local ventilator of the coal mine, the ventilation monitoring system for the underground excavation working face comprises an underground monitoring substation, a ventilation parameter monitoring module and an environmental parameter acquisition module;
the underground monitoring substation is used for monitoring the environmental parameters and the ventilation parameters of the underground ventilation network branches in real time;
the system comprises a ventilation parameter monitoring module, a data processing module and a data processing module, wherein the ventilation parameter monitoring module is used for monitoring the ventilation parameters of underground ventilation network branches in real time, and the ventilation parameters comprise wind speed, wind pressure and dry and wet air temperature;
the environmental parameter acquisition module is used for monitoring the environmental parameters of the underground ventilation network branches in real time, and the environmental parameters comprise CH4Concentration, CO concentration, O2Concentration, CO2Concentration and temperature.
As a further preferable scheme of the remote switching and intelligent regulation and control device and method for the local ventilator of the coal mine, the underground local fan variable-frequency monitoring system comprises a fan operation condition monitoring sensor, a monitoring substation and a variable-frequency control component,
the local fan operation condition monitoring sensor is used for acquiring the operation condition parameters of the fan in real time; the operating condition parameters comprise: sensors for air quantity, temperature, atmospheric pressure, negative pressure, full pressure, differential pressure, rotating speed and shaft temperature, current, voltage, power and efficiency;
the monitoring substation is used for monitoring the operating condition parameters of the local fans in real time;
and the frequency conversion control component is used for regulating and controlling the running frequency of the local fan.
As a further preferable scheme of the remote switching and intelligent regulation and control device and method for the local ventilator of the coal mine, the ground monitoring center comprises a PLC (programmable logic controller), an Ethernet communication module, a tunneling working face ventilation parameter display terminal and a server;
the local ventilation parameter display terminal is used for displaying the operation parameters of the local ventilation systems of the multiple tunneling working faces of the whole mine in real time;
the PLC is used for preprocessing the received local ventilation system operation parameters of the multiple tunneling working faces of the whole mine;
the Ethernet communication module is used for data transmission between the ground monitoring center and the industrial Ethernet communication system;
and the server is used for installing application software and functional software and providing services for users.
A control method based on a remote switching and intelligent regulation and control device of a local ventilator of a coal mine specifically comprises the following steps;
step 1, realizing continuous inching type remote automatic switching of local ventilators at regular time, monitoring and recording the switching process in real time, and realizing unattended operation of a plurality of groups of local ventilators; when the switching is abnormal, the system informs the abnormal condition by combining underground alarm and ground remote alarm;
step 2, the environment and ventilation parameters monitored by a plurality of underground tunneling working face local ventilation systems and the operation working condition parameters collected by a local fan monitoring system are transmitted to a ground monitoring center through an industrial Ethernet communication system, so that remote real-time monitoring and early warning analysis of the underground tunneling working face ventilation states are realized;
step 3, when the environmental parameters and the ventilation parameters monitored by the local ventilation system of the underground excavation working face are abnormal, transmitting the environmental parameters and the ventilation parameters of the abnormal excavation working face to a ground monitoring center, and sending an alarm;
step 4, the ground monitoring center determines and calculates the optimal air demand of the working face through analysis according to the environmental parameters and the ventilation parameters of the underground tunneling working face, and determines the local fan regulation and control scheme for eliminating the abnormity according to the Q-F characteristic model; meanwhile, the server uses a preset ventilation model and monitored ventilation parameters in the database to carry out safety inspection on the running state of the fan, so that advanced simulation of an adjusting scheme is realized, a proposed adjusting scheme is verified in a simulation mode, and the safety of the adjusting process is guaranteed; if the frequency of the local fan is calculated and adjusted to 50HZ, and abnormal gas emission cannot be eliminated, immediately alarming and taking other measures;
step 5, the regulation and control scheme for energy conservation and emission reduction of the local ventilation system in a normal state is as follows:
counting gas monitoring data of a driving face and determining the maximum value W of gas emission quantity0Frequency of operation of fan f0The air suction quantity of the fan is Q0，Defining the maximum value of the gas emission quantity in the current state as WNThe operating frequency of the fan is fNThe fan operating frequency in the next hour is fTSet gas concentration early warning value c00.5%; the frequency-conversion automatic air-conditioning dilution that 5 kinds of gas and fan frequency linkage regulation rules were proposed, different gas gushes out in the one hour of the back and is satisfied specifically as follows:
(1) adjustment rule 1: if the gas emission quantity in the current state is increased by a value (W)N-W0)∈[0,0.5M0]Then the fan frequency fN＝f0(ii) a Fan frequency initial value f of the next hourT＝f0；
(2) Adjustment rule 2: if the gas emission quantity in the current state is increased by a value (W)N-W0)∈(0.5M0，0.9M0]Then the fan frequency f of the same dayN＝f0Initial value f of fan frequency in the next hourTThe increase of the wind quantity is adjusted upwards, and the diluted gas emission increment is more than 0.5M0A value;
(3) adjustment rule 3: if the gas emission quantity in the current state is increased by a value (W)N-W0)＞0.9M0Then the fan frequency must be adjusted up to f'NDiluting the abnormally gushed gas by increasing the air volume; if the concentration of the driving face ci≤c0When the fan frequency is equal to 0.5%, the fan frequency initial value f in the next hour is obtainedT＝f'N(ii) a If the concentration c of the driving face is measured after the frequency modulation of the fani≥c0When the gas content is 0.5 percent, other measures are needed to treat the gas on the tunneling working face; .
(4) Adjustment rule 4: if the current gas emission quantity is reduced by a value (W)0-WN)∈[0,0.9M0]Then the current state fan frequency fN＝f0(ii) a The fan frequency initial value f of the next hourT＝f0；
(5) Adjustment rule 5: if the current gas emission quantity is reduced by a value (W)0-WN)＞0.9M0And if the duration exceeds 2h, the frequency of the fan in the current state is adjusted to f "NSo as to achieve the purposes of energy conservation and consumption reduction; the fan frequency initial value f of the next hourT＝f”N。
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
1. the invention overcomes the defects in the prior art, organically combines the coal mine monitoring and controlling system with a plurality of field knowledge such as computer technology, PLC control technology, fan frequency conversion regulation and control technology, optimization selection algorithm of regulation branches, intelligent software development and the like, and realizes the intelligent regulation and control of the air network in the local ventilation abnormal period; the remote automatic switching and intelligent regulating and controlling device for the mine local ventilation machine determines the air supply quantity through the parameters collected by the underground sensor and the underground substation, and avoids the phenomenon of one wind blowing of the existing fan, thereby solving the problem of air supply of the mine local ventilation according to the requirement. The system starts from the requirements of safety and energy conservation, adopts a control system formed by combining a PLC and a frequency converter to regulate and control the rotating speed of the fan in real time, and achieves the effects of remote monitoring and early warning, combination of man-machine control and intelligent regulation and control of air supply according to needs, so that the local mine ventilator realizes the functions of remote automatic switching, energy conservation and emission reduction, air supply according to needs and disaster prevention and reduction.
2. Aiming at the problem of the periodic switching between the underground local ventilator and the standby fan of the coal mine, the coal mine monitoring and controlling technology, the computer technology and the PLC control technology are adopted to realize the remote continuous inching type switching of the local ventilator and realize the unattended operation of the local ventilation; the air demand is analyzed and predicted through the monitoring data of the tunneling working face, the optimal air supply and demand matching model of the tunneling working face is established, the required operating frequency is searched in real time according to the characteristic curve library of the local ventilator, intelligent regulation and control are carried out, remote visualization and safety and energy conservation of local ventilation are realized, and disaster accidents caused by various abnormal ventilation can be effectively prevented and treated.
Drawings
Fig. 1 is a schematic diagram of the remote switching and intelligent control device for the local ventilator of the coal mine.
The specific implementation mode is as follows:
the invention is further explained below with reference to the drawings.
According to the limitation existing in the prior art, a remote switching and intelligent control device for a local ventilator of a coal mine is developed. The device organically combines a coal mine monitoring and controlling system with a plurality of domain knowledge such as computer technology, PLC control technology, fan frequency conversion regulation and control technology, optimization selection algorithm of regulating branches, intelligent software development and the like. The remote inching type local ventilator and the standby fan can be switched according to the ventilation state of the tunneling surface, the change of the ventilation parameters monitored by the sensor, the operation state of the ventilation facility, the operation parameters of the local fan and the local ventilation parameters can be realized, the intelligent software can correctly study and judge each local ventilation parameter through the data counted by the underground substation, thereby finding out abnormal air volume, the server carries out contrastive analysis on the ventilation parameter model preset in the database and the monitored ventilation parameters, and carries out high-speed iterative calculation, the solution regulation and control scheme of the abnormal ventilation parameters can be intelligently calculated, after safety check calculation and simulation verification, the staff of the ground monitoring center station is reminded to regulate the air volume, and the air volume can meet the requirement automatically by regulating the motor frequency of the ventilation facility and the local fan, thereby achieving a safe state. The device can also realize the advanced simulation of the ventilation scheme and carry out early warning on the possible abnormal condition of the air volume. The remote switching and intelligent regulation and control device for the local ventilator of the coal mine realizes the functions of remote automatic switching, energy conservation and emission reduction, air supply according to needs, disaster prevention and reduction, and can effectively prevent mine disaster accidents caused by abnormal ventilation.
The specific scheme is as follows:
as shown in fig. 1, a remote switching and intelligent regulation and control device and method for a local ventilator of a coal mine comprises a ground monitoring center, an industrial ethernet communication system, a local ventilator frequency conversion monitoring system and a tunneling working surface environment monitoring system; the ground monitoring center consists of a central station and a server; the industrial Ethernet communication system consists of an optical fiber network, an Ethernet module and a switch; the fan frequency conversion monitoring system consists of a fan working condition monitoring sensor, a monitoring substation and a frequency conversion control component; the environment monitoring system for the tunneling working face consists of a ventilation parameter monitoring sensor and a monitoring substation. The system realizes the unattended operation of local ventilation by remotely and continuously switching the local ventilation fans in a inching mode; the required air volume is analyzed and predicted through the monitoring data of the tunneling working face, the optimal air volume supply and demand matching model of the tunneling working face is established, the required operating frequency is searched in real time according to a characteristic curve library of the local ventilator, intelligent regulation and control are carried out, and remote visualization of local ventilation and safety and energy conservation are realized.
When the ventilation is monitored to be abnormal, the server carries out comparative analysis on a ventilation parameter model preset in the database and the monitored ventilation parameters, carries out high-speed iterative calculation, can intelligently calculate a solution regulation and control scheme for the ventilation parameter abnormality, carries out safety check calculation and simulation verification regulation scheme, and then monitors the ventilation parameters in the intelligent regulation process of the ventilation network in real time and eliminates the abnormal effect.
The ground monitoring center consists of a PLC controller, an EM243 Ethernet communication module, a tunneling working face ventilation parameter display terminal and an upper computer server. The PLC controller selects Siemens PLC S7-200 series including S7-224, S7-226, S7-231 and S7-232; the Ethernet communication module selects S7-243 to be connected with the underground gigabit Ethernet switch; a ventilation parameter display terminal of the driving face displays ventilation parameters on a server terminal in real time by compiling a man-machine friendly window; and the server selects a porphyry RICH-300B series industrial personal computer.
The tunneling working face environment monitoring system comprises an underground monitoring substation, a tunneling ventilation parameter monitoring module, an environment parameter acquisition module and a local ventilation facility control module. The underground environment parameter acquisition module comprises a temperature sensor, a carbon monoxide sensor, a carbon dioxide sensor, an oxygen sensor and a gas concentration sensor. The environment parameter acquisition module comprises a temperature sensor, a wind speed sensor, a negative pressure sensor and a wet and dry bulb temperature sensor on each branch. The system can collect environmental parameters such as methane, carbon monoxide, carbon dioxide and temperature, ventilation parameters such as wind speed (air quantity), negative pressure and wet-dry bulb temperature of a tunneling roadway, and can control the state of an underground ventilation facility according to instructions. The local ventilation facility control assembly comprises a power device and a monitoring sensor for controlling the on-off state of the ventilation facility.
The industrial Ethernet communication system comprises an optical fiber network, an Ethernet module and a switch. The transmission medium of the Ethernet communication network system is an optical fiber and is in a ring-shaped networking structure.
The local fan frequency conversion monitoring system comprises a fan operation condition monitoring sensor, a monitoring substation and a frequency conversion control assembly. The operation condition parameter monitoring module of the fan comprises a wind speed sensor, a wind pressure sensor, a dynamic pressure sensor, a static pressure sensor, a differential pressure sensor, a shaft temperature sensor, a rotating speed sensor and the like on each branch, and an EM231 module is adopted for sampling and monitoring; motor parameters such as current, voltage, power, efficiency and the like are mainly sampled and monitored by an EDA9033 module; the fan frequency conversion control component mainly adopts an EM232 module and a transfer function (PID) adjusting model to control and adjust a frequency converter of the fan.
The model number of the wind speed sensor is as follows: GFW15 type, mining intrinsically safe.
The model number of the gas sensor is as follows: GJ40A type, Exibd I mining intrinsic safety and explosion-proof type, it can be continuously and automatically convert the methane concentration value into standard electric signal and transmit to the associated equipment, the detection range is 0.00% -40.0%.
The carbon monoxide sensor has the following types: the GTH1000 type and the Exibi intrinsic safety type are adopted, the measuring range is 0-1000 ppm, the response time of the sensor is not more than 30s, and the protection grade is IP 54.
The specific working principle is as follows:
step 1, according to the rules of coal mine safety regulations, the local ventilator and the standby local ventilator which normally work once every day are subjected to automatic switching tests, the local ventilation cannot be influenced during the tests, and test records are filed for future reference. By the development of the system, the continuous inching type remote automatic switching of the local ventilators is realized regularly, the switching process is monitored and recorded in real time, and the unattended operation of a plurality of groups of local ventilators is realized; when the switching is abnormal, the system informs the abnormal condition by combining underground alarm and ground remote alarm.
Step 2, the environment and ventilation parameters monitored by a plurality of underground tunneling working face local ventilation systems and the operation working condition parameters collected by a local fan monitoring system are transmitted to a ground monitoring center through an industrial Ethernet communication system, so that remote real-time monitoring and early warning analysis of the underground tunneling working face ventilation states are realized;
step 3, when the environmental parameters and the ventilation parameters monitored by the local ventilation system of the underground excavation working face are abnormal, transmitting the environmental parameters and the ventilation parameters of the abnormal excavation working face to a ground monitoring center, and sending an alarm;
step 4, the ground monitoring center determines and calculates the optimal air demand of the working face through analysis according to the environmental parameters and the ventilation parameters of the underground tunneling working face, and determines the local fan regulation and control scheme for eliminating the abnormity according to the Q-F characteristic model; meanwhile, the server uses a preset ventilation model and monitored ventilation parameters in the database to carry out safety inspection on the running state of the fan, so that advanced simulation of an adjusting scheme is realized, a proposed adjusting scheme is verified in a simulation mode, and the safety of the adjusting process is guaranteed; if the local fan frequency is calculated and adjusted to 50HZ, abnormal gas emission cannot be eliminated, an alarm is immediately given to take other measures.
Step 5, the regulation and control scheme for energy conservation and emission reduction of the local ventilation system in a normal state is as follows:
according to the gas emission rule of the tunneling working face measured and counted in the coal mine field, an intelligent air regulation method for diluting gas based on gas emission amount monitoring and fan variable-frequency air regulation is provided. In order to avoid the too frequent adjustment of the working frequency of the fan, research and judgment and adjustment are carried out by taking hours as units, and the dynamic management of gas emission on the tunneling working face is matched with the supply and demand of air volume. Counting gas monitoring data of a driving face and determining the maximum value W of gas emission quantity0Frequency of operation of fan f0The air suction quantity of the fan is Q0. The one hundred thirty-six items of coal mine safety regulations: the gas concentration in the return air tunnel of mining area and the return air tunnel of mining working face is overWhen the concentration is over 1.0%, the work is stopped, the personnel are removed, and measures are taken for treatment. Therefore, we set the gas concentration 0.5% as the daily management early warning value, 0.5% Q0Maximum value W of gas emission0The difference value to be compared is called the margin M of the fan regulation0. Defining the maximum value of the gas emission quantity in the current state as WNThe operating frequency of the fan is fNThe fan operating frequency in the next hour is fTSet gas concentration early warning value c00.5%. 5 kinds of gas and fan frequency linkage regulation rules are proposed, and the frequency conversion automatic air regulation dilution that different gas gushed in the next hour is satisfied:
(1) adjustment rule 1: if the gas emission quantity in the current state is increased by a value (W)N-W0)∈[0,0.5M0]Then the fan frequency fN＝f0(ii) a Fan frequency initial value f of the next hourT＝f0。
(2) Adjustment rule 2: if the gas emission quantity in the current state is increased by a value (W)N-W0)∈(0.5M0，0.9M0]Then the fan frequency f of the same dayN＝f0Initial value f of fan frequency in the next hourTThe increase of the wind quantity is adjusted upwards, and the diluted gas emission increment is more than 0.5M0The value is obtained.
(3) Adjustment rule 3: if the gas emission quantity in the current state is increased by a value (W)N-W0)＞0.9M0Then the fan frequency must be adjusted up to f'NAnd the abnormal gas gushing out is diluted by increasing the air quantity. If the concentration of the driving face ci≤c00.5%, and the fan frequency initial value f in the next hourT＝f'N(ii) a If the concentration c of the driving face is measured after the frequency modulation of the fani≥c0And (5) controlling the gas on the tunneling working face by adopting other measures.
(4) Adjustment rule 4: if the current gas emission quantity is reduced by a value (W)0-WN)∈[0,0.9M0]Then the current state fan frequency fN＝f0(ii) a Fan frequency initial value f in the next hourT＝f0。
(5) Regulating deviceSection rule 5: if the current gas emission quantity is reduced by a value (W)0-WN)＞0.9M0And if the duration exceeds 2h, the frequency of the fan in the current state is adjusted to f "NSo as to achieve the purpose of energy conservation and consumption reduction. Fan frequency initial value f in the next hourT＝f”N。
Claims (1)
1. The utility model provides a colliery auxiliary ventilating fan remote switch and intelligent regulation and control device which characterized in that: the underground ventilation monitoring system comprises a ground monitoring center, an industrial Ethernet communication system, an underground local fan frequency conversion monitoring system and an underground tunneling working surface ventilation monitoring system;
the system comprises an underground tunneling working face ventilation monitoring system, a working face air supply and demand matching model and a working face air supply and demand matching model, wherein the underground tunneling working face ventilation monitoring system is used for monitoring the ventilation and environmental parameters of the underground tunneling working face in real time, studying and judging and predicting the air demand and determining the working face air supply and demand matching model;
the underground local fan frequency conversion monitoring system is used for monitoring the operating condition parameters of the local fan in real time and finishing the regulation and control of the operating frequency of the local fan;
the industrial Ethernet communication system is used for transmitting the acquired environmental parameters, ventilation parameters, the operating condition parameters of the local fan and the control instructions of the ground monitoring center of the underground tunneling working face;
the ground monitoring center is used for monitoring the operating condition parameters of local fans of all driving faces of the whole coal mine in real time, quickly realizing remote switching and intelligent regulation and control when ventilation is abnormal, recovering the safety state and alarming when the abnormality cannot be eliminated;
the ventilation monitoring system for the underground tunneling working face comprises an underground monitoring substation, a ventilation parameter monitoring module and an environmental parameter acquisition module;
the underground monitoring substation is used for monitoring the environmental parameters and the ventilation parameters of the underground ventilation network branches in real time;
the system comprises a ventilation parameter monitoring module, a data processing module and a data processing module, wherein the ventilation parameter monitoring module is used for monitoring the ventilation parameters of underground ventilation network branches in real time, and the ventilation parameters comprise wind speed, wind pressure and dry and wet air temperature;
an environmental parameter acquisition module for real-time monitoring of the rings of the downhole ventilation network branchesAn environment parameter comprising CH4Concentration, CO concentration, O2Concentration, CO2Concentration and temperature;
the underground local fan frequency conversion monitoring system comprises a local fan operating condition monitoring sensor, a monitoring substation and a frequency conversion control component,
the local fan operation condition monitoring sensor is used for acquiring the operation condition parameters of the fan in real time; the operating condition parameters comprise: air quantity, temperature, atmospheric pressure, negative pressure, full pressure, differential pressure, rotating speed, current, voltage, power and efficiency;
the monitoring substation is used for monitoring the operating condition parameters of the local fans in real time;
the variable frequency control assembly is used for regulating and controlling the running frequency of the local fan;
the ground monitoring center comprises a PLC controller, an Ethernet communication module, a local ventilation parameter display terminal and a server;
the local ventilation parameter display terminal is used for displaying the operation parameters of the local ventilation systems of the multiple tunneling working faces of the whole mine in real time;
the PLC is used for preprocessing the received local ventilation system operation parameters of the multiple tunneling working faces of the whole mine;
the Ethernet communication module is used for data transmission between the ground monitoring center and the industrial Ethernet communication system;
the server is used for installing application software and functional software and providing services for users;
the control method of the remote switching and intelligent control device of the local ventilator of the coal mine specifically comprises the following steps;
step 1, realizing continuous inching type remote automatic switching of local ventilators at regular time, monitoring and recording the switching process in real time, and realizing unattended operation of a plurality of groups of local ventilators; when the switching is abnormal, the system informs the abnormal condition by combining underground alarm and ground remote alarm;
step 2, the environment and ventilation parameters monitored by the underground tunneling working face ventilation monitoring system and the operation working condition parameters collected by the underground local fan frequency conversion monitoring system are transmitted to a ground monitoring center through an industrial Ethernet communication system, so that the remote real-time monitoring and early warning analysis of the ventilation state of all underground tunneling working faces are realized;
step 3, when the environmental parameters and the ventilation parameters monitored by the underground tunneling working face ventilation monitoring system are abnormal, transmitting the environmental parameters and the ventilation parameters of the abnormal tunneling working face to a ground monitoring center, and sending an alarm;
step 4, the ground monitoring center determines and calculates the optimal air demand of the working face through analysis according to the environmental parameters and the ventilation parameters of the underground tunneling working face, and determines the local fan regulation and control scheme for eliminating the abnormity according to the Q-F characteristic model; meanwhile, the server uses a preset ventilation model and monitored ventilation parameters in the database to carry out safety inspection on the running state of the fan, so that advanced simulation of an adjusting scheme is realized, a proposed adjusting scheme is verified in a simulation mode, and the safety of the adjusting process is guaranteed; if the abnormal gas emission cannot be eliminated when the local fan frequency is adjusted to 50HZ by calculation, immediately alarming and taking other measures;
step 5, the regulation and control scheme for energy conservation and emission reduction of the local ventilation system in a normal state is as follows:
counting gas monitoring data of a driving face and determining the maximum value W of gas emission quantity0Frequency of operation of fan f0The air suction quantity of the fan is Q0Defining the maximum gas emission quantity of the current state as WNCurrent fan frequency fNAnd the initial value of the fan frequency in the next hour is fTSet gas concentration early warning value c00.5%; the frequency-conversion automatic air-conditioning dilution that 5 kinds of gas and fan frequency linkage regulation rules were proposed, different gas gushes out in the one hour of the back and is satisfied specifically as follows:
(1) adjustment rule 1: if the gas emission quantity in the current state is increased by a value (W)N-W0)∈[0,0.5M0]Then the current fan frequency fN＝f0(ii) a Fan frequency initial value f of the next hourT＝f0；M0The margin for fan regulation;
(2) adjustment rule 2: if the gas emission quantity in the current state is increased by a value (W)N-W0)∈(0.5M0，0.9M0]Then the current fan frequency fN＝f0Initial value f of fan frequency in the next hourTThe increase of the wind quantity is adjusted upwards, and the diluted gas emission increment is more than 0.5M0A value;
(3) adjustment rule 3: if the gas emission quantity in the current state is increased by a value (W)N-W0)＞0.9M0Then the fan frequency must be adjusted up to f'NDiluting the abnormally gushed gas by increasing the air volume; if the concentration of the driving face ci≤c0When the fan frequency is equal to 0.5%, the fan frequency initial value f in the next hour is obtainedT＝f′N(ii) a If the concentration c of the driving face is measured after the frequency modulation of the fani≥c0When the gas content is 0.5 percent, other measures are needed to treat the gas on the tunneling working face;
(4) adjustment rule 4: if the current gas emission quantity is reduced by a value (W)0-WN)∈[0,0.9M0]Then the current state fan frequency fN＝f0(ii) a The fan frequency initial value f of the next hourT＝f0；
(5) Adjustment rule 5: if the current gas emission quantity is reduced by a value (W)0-WN)＞0.9M0And if the duration exceeds 2h, the frequency of the fan in the current state is adjusted to f "NSo as to achieve the purposes of energy conservation and consumption reduction; the fan frequency initial value f of the next hourT＝f”N。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293029.6A CN110067764B (en) | 2019-04-12 | 2019-04-12 | Remote switching and intelligent regulation and control device for local ventilator of coal mine and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293029.6A CN110067764B (en) | 2019-04-12 | 2019-04-12 | Remote switching and intelligent regulation and control device for local ventilator of coal mine and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110067764A CN110067764A (en) | 2019-07-30 |
| CN110067764B true CN110067764B (en) | 2021-05-11 |
Family
ID=67367663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910293029.6A Active CN110067764B (en) | 2019-04-12 | 2019-04-12 | Remote switching and intelligent regulation and control device for local ventilator of coal mine and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110067764B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953011A (en) * | 2019-12-18 | 2020-04-03 | 西安重装矿山电器设备有限公司 | Automatic air door remote control system |
| CN111206951B (en) * | 2020-01-22 | 2021-09-14 | 中铁隧道局集团有限公司 | Tunnel energy-saving ventilation method based on air volume and power of fan |
| CN111489609A (en) * | 2020-06-08 | 2020-08-04 | 中国矿业大学 | Fan performance detection experiment teaching system and method based on virtual reality |
| CN112177661B (en) * | 2020-08-28 | 2021-11-26 | 中国矿业大学 | Accurate monitoring and abnormity early warning system and method for local ventilation parameters of coal mine |
| CN113700516A (en) * | 2021-09-02 | 2021-11-26 | 西安重装韩城煤矿机械有限公司 | Remote switching device and method for coal mine variable-frequency local ventilator |
| CN113790076B (en) * | 2021-09-29 | 2022-05-20 | 重庆工程职业技术学院 | Intelligent ventilation system and method for air intake flow of coal mine excavation working face |
| CN114017090A (en) * | 2021-10-20 | 2022-02-08 | 中国计量大学 | Intelligent control system and method for mine main fan |
| CN114151122A (en) * | 2021-11-26 | 2022-03-08 | 西安重装韩城煤矿机械有限公司 | Mining intelligent local ventilation system |
| CN114151123A (en) * | 2021-11-26 | 2022-03-08 | 西安重装韩城煤矿机械有限公司 | Intelligent monitoring system for local ventilator of coal mine |
| CN114135337A (en) * | 2021-11-29 | 2022-03-04 | 西安石油大学 | Internet of things mine ventilation remote monitoring management system based on LSTM network |
| CN114673558B (en) * | 2022-04-12 | 2023-01-31 | 中国矿业大学 | Coal mine driving face risk identification and intelligent pre-control system and method |
| CN114622944B (en) * | 2022-04-19 | 2023-02-24 | 中国矿业大学 | On-demand frequency conversion air adjusting system and method for mine multi-fan combined operation |
| CN117073142A (en) * | 2023-06-30 | 2023-11-17 | 中建三局集团有限公司 | Complex underground cavern air quality dynamic control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201982142U (en) * | 2010-11-17 | 2011-09-21 | 重庆飞尔达机械有限责任公司 | Adaptive control system for coal mine main ventilator |
| CN206071931U (en) * | 2016-09-30 | 2017-04-05 | 平顶山天安煤业股份有限公司 | A kind of Coal Mine Undergound Fan M ＆ system |
| CN107288677A (en) * | 2017-06-28 | 2017-10-24 | 中国矿业大学 | A kind of coalmine ventilation parameter intelligentization monitoring regulation device and its control method |
| CN109578045A (en) * | 2018-12-03 | 2019-04-05 | 中国矿业大学 | The Fan Regulation method, apparatus and electronic equipment of face gas density are adopted in regulation |
-
2019
- 2019-04-12 CN CN201910293029.6A patent/CN110067764B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201982142U (en) * | 2010-11-17 | 2011-09-21 | 重庆飞尔达机械有限责任公司 | Adaptive control system for coal mine main ventilator |
| CN206071931U (en) * | 2016-09-30 | 2017-04-05 | 平顶山天安煤业股份有限公司 | A kind of Coal Mine Undergound Fan M ＆ system |
| CN107288677A (en) * | 2017-06-28 | 2017-10-24 | 中国矿业大学 | A kind of coalmine ventilation parameter intelligentization monitoring regulation device and its control method |
| CN109578045A (en) * | 2018-12-03 | 2019-04-05 | 中国矿业大学 | The Fan Regulation method, apparatus and electronic equipment of face gas density are adopted in regulation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110067764A (en) | 2019-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110067764B (en) | Remote switching and intelligent regulation and control device for local ventilator of coal mine and control method | |
| CN107288677B (en) | A kind of coalmine ventilation parameter intelligentization monitoring regulation device and its control method | |
| CN204925745U (en) | Roots blower intelligent monitoring system | |
| CN105370609A (en) | Intelligent control system for high-altitude cluster ventilation and method thereof | |
| CN112128107A (en) | Intelligent control system and method for air compressor | |
| CN106970564B (en) | A kind of cable shaft ditch on-line monitoring system and method | |
| CN112796817A (en) | Tunnel ventilation intelligence control system | |
| CN203756571U (en) | Intelligent frequency-conversion energy-saving control device of main fan on ground of coal mine | |
| CN206174984U (en) | Online monitored control system of mine owner ventilation blower | |
| CN114135337A (en) | Internet of things mine ventilation remote monitoring management system based on LSTM network | |
| CN206071925U (en) | A kind of lampblack fan exception automatic monitoring device | |
| CN206075106U (en) | A kind of lampblack fan plugged filter supervising device | |
| CN114995272A (en) | Intelligent centralized control system and method for blasting and air exhaust in tunnel construction | |
| CN113570829B (en) | Wireless gas detection alarm system | |
| CN214464318U (en) | Tunnel ventilation intelligence control system | |
| CN103941785A (en) | Method for controlling intelligent control device for power distribution station environment | |
| CN213298277U (en) | Intelligent control system of air compressor | |
| CN111120386B (en) | Automatic setting method for action threshold of electromechanical equipment for coal mine | |
| CN205375128U (en) | Coal mine safety monitoring information system based on PLC control | |
| CN212508393U (en) | Remote online monitoring system of local fan | |
| CN203847145U (en) | Automatic control device for underground mine ventilation | |
| CN115898551A (en) | Internet of things-based tunneling working face ventilation parameter monitoring and linkage regulation and control system | |
| CN206696656U (en) | A kind of cable shaft ditch on-line monitoring system | |
| CN215486761U (en) | Coal mine ventilator frequency conversion speed regulation system device based on multi-sensor fusion | |
| CN214623360U (en) | Control system for underground local ventilator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221024 Address after: No. 12, Luoshan Road, Xuzhou Economic and Technological Development Zone, Xuzhou, Jiangsu 221000 Patentee after: XUZHOU ZHONGKUANG KEGUANG MACHINE & ELECTRICITY TECHNIQUE Co.,Ltd. Address before: 221116 No. 1 Tongshan University Road, Xuzhou City, Jiangsu Province Patentee before: CHINA University OF MINING AND TECHNOLOGY |
|
| TR01 | Transfer of patent right |