Mining ventilation system

Abstract

The utility model discloses a mining ventilation system which comprises ventilators, air doors, a disaster prevention device, a plurality of collecting devices and a master control device which are installed in ventilation roadways of a mine, the air doors are provided with pneumatic actuators, and the disaster prevention device comprises a flame detector and an automatic fire extinguishing device. The various acquisition devices comprise an opening degree sensor mounted on an air door, a wind measurement sensor, a gas sensor, a laser dust sensor and a flue gas sensor which are mounted in each roadway, and a camera and a thermal infrared imager which are mounted at the air door; and the main control device is electrically connected with a control device of the ventilator, the pneumatic actuator, the flame detector, the automatic fire extinguishing device and the various acquisition devices. According to the mine ventilation system, mine ventilation is always in a reasonable state, and the mine ventilation system further has the capabilities of disaster prevention, early warning and hidden danger elimination.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of coal mine ventilation, and specifically relates to a mine ventilation system. BACKGROUND

[0002] Mine ventilation management is a basic work for ensuring the safety production of mine, and ensuring the rationality and reliability of the ventilation system is the primary task of the ventilation work.

[0003] The coal mining system is huge, the correlation is complex, the disaster-causing factors are many, the environment is poor, and the ventilation system mainly faces the following problems: the resource occurrence condition is complex, the ventilation safety perception, cognition and decision-making are difficult. The ventilation quantitative control technology lags behind, and the intelligent ventilation continues to be difficult to apply efficiently. The ventilation control is a systematic, systematic and collaborative engineering, and the control is difficult.

[0004] At present, the ventilation system in the market depends on personal ability and manual operation in the aspects of ventilation regulation and control, field information feedback and the like. The cognition is not deep enough, once misjudgment occurs, the influence is huge, the regulation and control are time-consuming, and fine management cannot be realized. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a mine ventilation system, which keeps the mine ventilation in a reasonable state in daily ventilation management, and has the ability of disaster prevention, early warning and hidden danger elimination.

[0006] In order to realize the above object, the utility model provides the following technical scheme: a mine ventilation system, a ventilator is installed in each ventilation roadway of the mine;

[0007] An air door is installed in each roadway of the mine and has a pneumatic actuator.

[0008] A disaster prevention device includes a flame detector and an automatic fire extinguishing device.

[0009] A plurality of collection devices include an opening degree sensor installed on the air door, a wind measuring sensor, a gas sensor, a laser dust sensor and a smoke sensor installed in each roadway, and a camera and an infrared thermal imager installed at the air door.

[0010] A main control device is electrically connected with the control device of the ventilator, the pneumatic actuator, the flame detector, the automatic fire extinguishing device and the plurality of collection devices, receives signals collected by the plurality of collection devices and the flame detector, controls the ventilator, the air door and the automatic fire extinguishing device, and communicates with a remote control center through a network.

[0011] Preferably, the wind measuring sensor is arranged in the roadway at an inclined angle.

[0012] Preferably, the flame detector is a four-waveband flame detector, and the automatic fire extinguishing device is a perfluorocyclohexanone automatic fire extinguishing device.

[0013] Preferably, the camera and the infrared thermal imager are both intrinsically safe.

[0014] Preferably, a wind window is embedded on the air door, the wind window is of a louver structure and is controlled by a second pneumatic actuator, and the second pneumatic actuator is electrically connected with the master control device.

[0015] Preferably, the pneumatic actuator and the second pneumatic actuator are pneumatic motors or explosion-proof motors.

[0016] Preferably, the master control device further comprises a man-machine operation screen and a communication module, and the master control device is connected to a network through the communication module.

[0017] Compared with the prior art, the mine ventilation system has the following beneficial effects:

[0018] In daily ventilation management, the air volume in the roadway is measured in real time through the air flow sensor, the air door opening is detected in cooperation with the air door opening sensor, the collected data are compared with the preset threshold value by the master control device, and the ventilation machine and the air door are automatically controlled, so that the mine ventilation is always in a reasonable state.

[0019] The gas sensor, the laser dust sensor, the smoke sensor and the fire extinguishing device are additionally arranged to detect the internal dangerous factors and directly process the abnormality, so that the safety hidden danger is eliminated in time and disasters are prevented. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a principle framework diagram of the embodiment of the utility model. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] For example, Figure 1As shown, the utility model discloses a kind of mine ventilation system, realize the intelligent ventilation of each roadway in mine, specifically including ventilator 1. Air door 2, disaster prevention device 3, multiple acquisition devices 4 and main control device 5, the ventilator is arranged at the top of roadway, air door is arranged in each roadway, play the role of partition, disaster prevention device is also synchronously arranged in each roadway, multiple acquisition devices include opening degree sensor installed on air door, wind sensor, gas sensor, laser dust sensor, flue gas sensor installed in each roadway, and camera, infrared thermal imager installed at air door.

[0023] Specifically, the ventilator is arranged in the ventilation duct of air inlet side and air return side of roadway, which has the ventilator itself and the control system for controlling the operation of the ventilator, and the control system is connected with the remote control center through the main control device, and the running state of the ventilator is uploaded to the remote control center through the main control device.

[0024] The air door is installed at each position in the roadway, and the air door is opened and closed by the pneumatic actuator, and the opening degree sensor is installed on the air door to monitor the opening size of the air door. The pneumatic actuator is a pneumatic motor or an explosion-proof motor, which is electrically connected with the main control device, and the opening degree sensor is also electrically connected with the main control device. The air door is driven by compressed air through the pneumatic actuator to make the roller blind piece rise and fall, so as to adjust the current air door area. The lifting and lowering of the roller blind is controlled by the remote control center through the main control device to control the pneumatic actuator to execute, and the lifting and lowering state of the roller blind piece is accurately and quickly controlled by combining the data of the peripheral wind speed sensor and the opening degree sensor, so as to realize the accurate adjustment of the air volume of the roadway and improve the informatization and automation of the mine ventilation management.

[0025] The air door is installed at each position in the roadway, and the air door is opened and closed by the pneumatic actuator, and the opening degree sensor is installed on the air door to monitor the opening size of the air door. The pneumatic actuator is a pneumatic motor or an explosion-proof motor, which is electrically connected with the main control device, and the opening degree sensor is also electrically connected with the main control device. The air door is driven by compressed air through the pneumatic actuator to make the roller blind piece rise and fall, so as to adjust the current air door area. The lifting and lowering of the roller blind is controlled by the remote control center through the main control device to control the pneumatic actuator to execute, and the lifting and lowering state of the roller blind piece is accurately and quickly controlled by combining the data of the peripheral wind speed sensor and the opening degree sensor, so as to realize the accurate adjustment of the air volume of the roadway and improve the informatization and automation of the mine ventilation management.

[0026] The air door needs to be passed by pedestrians and vehicles, so the intrinsic safety camera and the intrinsic safety infrared thermal imager are installed at the air door, and the camera and the infrared thermal imager are also used to detect the situation in the roadway, and the air door is closed and an alarm is given when an abnormality occurs.

[0027] The fire extinguishing device is also installed in the roadway, which includes a four-waveband flame detector and a perfluoroketone automatic fire extinguishing device, which are electrically connected with the main control device. The four-waveband flame detector detects whether a fire occurs in the roadway according to the light intensity of the detected flame and the flicker frequency of the flame, and uploads the monitoring result to the main control device. When an abnormality occurs, the main control device controls the perfluoroketone automatic fire extinguishing device to extinguish the fire, so as to eliminate hidden dangers and prevent disasters.

[0028] The master control device comprises a data acquisition and processing module, a communication module and a man-machine operation screen, the data acquisition and processing module is connected with various acquisition devices, receives and processes data values acquired by the acquisition devices, and is uploaded to a remote control center through the communication module in combination with a network, and the man-machine operation screen is used for displaying the running state of the ventilation system and providing a field operation interface.

[0029] The wind measuring sensor adopts the time difference method principle of ultrasonic waves, is installed in the roadway in a diagonal arrangement form, the measured wind speed is the average wind speed of the ultrasonic wave passing path, and the master control device controls the ventilation fan and the air door opening degree according to the measured wind speed in combination with the air volume demand in the roadway.

[0030] The gas sensor, the laser dust sensor and the smoke sensor are all installed in the roadway, measure the gas condition, the dust condition and the smoke condition in the roadway respectively, are fed back to the master control device, are transmitted to the remote control center through the network, and the remote control center performs early warning judgment according to the feedback data.

[0031] The mine ventilation system disclosed by the utility model can realize real-time determination of the air volume in the roadway through the wind measuring sensor, detect the air door opening degree in cooperation with the air door opening degree sensor, compare the collected data with the preset threshold value by the master control device, automatically control the ventilation fan and the air door, and thus make the mine ventilation always in a reasonable state; meanwhile, the dangerous factors in the roadway can be detected and directly treated in case of abnormality, so that the safety hidden danger can be eliminated in time to prevent disasters

[0032] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A mine ventilation system characterised in that The application relates to a mine disaster prevention and control system. The system comprises: ventilation fans installed in various ventilation roadways of a mine; air doors installed in various roadways of the mine and provided with pneumatic actuators; a disaster prevention device comprising a flame detector and an automatic fire extinguishing device; and various acquisition devices comprising opening degree sensors installed on the air doors, air flow sensors, gas sensors, laser dust sensors and smoke sensors installed in various roadways, and cameras and infrared thermal imagers installed at the air doors. The main control device is electrically connected with the control devices of the ventilation fans, the pneumatic actuators, the flame detector, the automatic fire extinguishing device and the various acquisition devices, receives signals collected by the various acquisition devices and the flame detector, controls the ventilation fans, the air doors and the automatic fire extinguishing device, and communicates with a remote control center through a network. The air flow sensors are diagonally arranged in the roadways. The flame detector is a four-waveband flame detector, and the automatic fire extinguishing device is a perfluorohexone automatic fire extinguishing device. The cameras and the infrared thermal imagers are intrinsically safe.

2. A mine ventilation system according to claim 1, characterised in that: The air doors are provided with air windows, the air windows are of a louver structure, are controlled by second pneumatic actuators, and the second pneumatic actuators are electrically connected with the main control device.

3. A mine ventilation system according to claim 1, characterised in that: The pneumatic actuators and the second pneumatic actuators are pneumatic motors or explosion-proof motors.

4. A mine ventilation system according to claim 1, characterised in that: The main control device further comprises a man-machine operation screen and a communication module, and the main control device is connected to the network through the communication module.

5. A mine ventilation system according to claim 1, characterised in that: ​ 6. A mine ventilation system according to claim 5, characterised in that: ​ 7. A mine ventilation system according to claim 1, characterised in that: ​

Images