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CN-122014328-A - Gas emission device for coal mining and gas outburst prevention early warning system thereof

CN122014328ACN 122014328 ACN122014328 ACN 122014328ACN-122014328-A

Abstract

The invention relates to the technical field of coal mine safety production and gas control, and discloses a gas discharge device for coal mine exploitation and a gas outburst prevention early warning system. The gas discharging device is formed by connecting a plurality of discharging pipeline structures, wherein an air suction pipeline structure is arranged on the discharging pipeline to pump gas in different underground areas, a wind-following power mechanism is arranged in the air suction pipeline structure, a circulating filtering mechanism is arranged on the outer side of the air suction pipeline structure to filter air flow in the process of entering the discharging pipeline, and meanwhile, a sweeping mechanism and a knocking mechanism are arranged to continuously clean filtering parts so as to reduce the influence of coal ash adhesion on the discharging efficiency, and therefore the stability of the gas discharging process is ensured. The system comprises a multi-parameter detection unit, a data acquisition substation, a communication module, an intelligent early warning algorithm unit, a hierarchical execution linkage unit and a ground early warning unit, wherein the early warning system is used for monitoring and analyzing underground gas parameters and carrying out linkage control and early warning prompt under abnormal conditions.

Inventors

  • ZHOU QINGHONG
  • HUANG JIAHAI
  • XU JUN

Assignees

  • 安徽理工大学

Dates

Publication Date
20260512
Application Date
20260410

Claims (10)

  1. 1. The utility model provides a gas drainage device of coal mining which characterized in that: The gas-sucking device comprises a discharge pipeline formed by connecting a plurality of discharge pipeline structures (1) through flanges, wherein the end parts of the discharge pipeline structures (1) are used for being connected with a negative pressure pump to suck underground gas, suction pipeline structures (2) are arranged on the surfaces of the discharge pipeline structures (1) at intervals, and an electric control valve is arranged between each suction pipeline structure (2) and each discharge pipeline structure (1) and used for controlling the discharge of the gas in a corresponding region; The inside of the air suction pipeline structure (2) is provided with a wind-following power mechanism (3), the outer side of the air suction pipeline structure (2) is provided with a circulating filter mechanism (4), and the wind-following power mechanism (3) can drive the circulating filter mechanism (4) to rotate under the action of air flow so as to filter the air entering the discharge pipeline; One side of the air suction pipeline structure (2) is provided with a cleaning mechanism (5), and the top of the air suction pipeline structure (2) is provided with a knocking mechanism (6) for cleaning the circulating filter mechanism (4).
  2. 2. The gas drainage device for coal mining according to claim 1, wherein the drainage pipeline structure (1) comprises a main pipeline (11), the main pipelines (11) are communicated through flanges, a supporting seat (12) is fixed on the surface of the main pipeline (11), the supporting seat (12) is fixed above one side of a well through screws, and a butt joint pipe (13) is arranged on one side of the main pipeline (11) facing the center of the well.
  3. 3. The gas discharge device for coal mining according to claim 2, wherein the gas suction pipeline structure (2) comprises a branch pipeline (21) arranged at a port of the butt joint pipe (13), the branch pipeline (21) is horizontally arranged above a well, one end of the branch pipeline (21) facing away from the butt joint pipe (13) is fixed at the top of the well through a hanging bracket (22), and air suction ports (24) are uniformly formed below the surface of the branch pipeline (21).
  4. 4. A gas discharge device for coal mining according to claim 3, wherein the end of the branch pipe (21) is provided with a sealing end cover (23), and one end of the upper surface of the branch pipe (21) close to the sealing end cover (23) is provided with a boss (25).
  5. 5. The gas drainage device for coal mining according to claim 4, wherein the wind-driven power mechanism (3) comprises a power shaft (31) horizontally rotating to penetrate through the sealing end cover (23), a supporting hollowed-out frame (32) is arranged on the surface of the power shaft (31), an impeller (33) is arranged at one end of the power shaft (31), the wind-driven power mechanism (3) further comprises a transmission shaft (34) horizontally rotating to penetrate through the boss (25), the transmission shaft (34) is connected with the power shaft (31) through a transmission belt structure (35), and a driving gear (36) is arranged at one end of the transmission shaft (34).
  6. 6. A gas discharge device for coal mining according to claim 1, wherein the circulating filter mechanism (4) comprises a cylinder frame (41) rotatably arranged on the surface of the branch pipeline (21), a filter screen cylinder (42) corresponding to the air suction port (24) is arranged on the surface of the cylinder frame (41), a toothed ring (43) is fixed on one end surface of the cylinder frame (41), and the toothed ring (43) is meshed with the driving gear (36).
  7. 7. The gas discharge device for coal mining according to claim 6, wherein the cleaning mechanism (5) comprises a first rotating shaft (51) rotatably arranged outside the branch pipeline (21), a brush (52) is arranged on the surface of the first rotating shaft (51), and a coal ash collecting box (53) is arranged at the bottom of the first rotating shaft (51); The top symmetry of minute pipeline (21) is provided with bracing piece (26), strike mechanism (6) including rotatory second pivot (61) that set up between bracing piece (26), second pivot (61) surface is provided with swinging arms (62), and the tip of swinging arms (62) is provided with strikes hammer (63), and the one end of second pivot (61) is provided with toggle rod (64), and the one end surface of barrel holder (41) is provided with ratchet tooth (44).
  8. 8. The gas outburst prevention early warning system for coal mine gas emission is characterized by comprising a multi-parameter detection unit, a data acquisition substation, a communication module, an intelligent early warning algorithm unit, a hierarchical execution linkage unit and a ground early warning unit, wherein the hierarchical execution linkage unit is used for monitoring underground gas parameters and sending early warning when the underground gas parameters exceed a threshold value.
  9. 9. The gas outburst prevention early warning system for coal mine gas emission of claim 8, wherein the multi-parameter detection unit comprises a gas concentration sensor, a gas pressure sensor, a coal body stress sensor and an electromagnetic radiation sensor.
  10. 10. The gas outburst prevention early warning system for coal mine gas emission, according to claim 8, characterized in that the data acquisition substation is used for carrying out total sum preprocessing on sensor data, the communication module is used for transmitting the data to the intelligent early warning algorithm unit, the intelligent early warning algorithm unit is used for judging whether gas parameters exceed a threshold value and predicting a change trend, the grading execution linkage unit is used for controlling the power of the negative pressure pump and the electric control valves of all branch pipelines in a linkage mode, equipment outage control is carried out when necessary, and the ground early warning unit is used for sending out warning signals for stopping operation and personnel evacuation.

Description

Gas emission device for coal mining and gas outburst prevention early warning system thereof Technical Field The invention belongs to the technical field of coal mining, and particularly relates to a gas discharge device for coal mining and a gas outburst prevention early warning system thereof. Technical problem In the underground mining process of a coal mine, coal beds and surrounding rocks usually contain a certain amount of gas, and when the mining operation is continuously carried out, the gas is continuously released from the coal bodies and is accumulated in a roadway space. If the gas cannot be timely and stably discharged, the underground operation environment can be influenced, and the safety risk brought by gas accumulation can be increased. Therefore, in actual production, a gas discharge pipeline is usually arranged underground, gas is pumped out of an underground area through pumping equipment, and related parameters of the underground gas are monitored by combining a monitoring device, so that the production safety of a mine is ensured. Along with the increase of mine exploitation depth and the expansion of exploitation range, the underground gas distribution area is more complicated, and the gas release amount and the change condition are also more unstable, so that in practical application, a plurality of areas are often required to be provided with discharge pipelines and continuously pump out, and meanwhile, the underground gas concentration, the underground gas pressure and related parameters are detected in real time by matching with a monitoring system, and the discharge state is pre-warned or regulated according to the detection result. However, there remains a need in the art for an integrated device and system for downhole gas drainage and monitoring linkage applications that is further improved during long-term operation. Disclosure of Invention Aiming at the problems in the prior art, the invention aims to provide a gas emission device for coal mining and a gas outburst prevention early warning system thereof, which can realize that the emission system can stably operate for a long time while continuously carrying out gas pumping operation and form a more reliable cooperative relationship with underground gas monitoring and early warning processes, thereby guaranteeing the continuity and safety of gas emission work. In order to achieve the above purpose, the present invention provides the following technical solutions: The gas discharge device for coal mining comprises a discharge pipeline formed by connecting a plurality of discharge pipeline structures through flanges, wherein the end parts of the discharge pipeline structures are used for being connected with a negative pressure pump to pump underground gas, suction pipeline structures are arranged on the surfaces of the discharge pipeline structures at intervals, and an electric control valve is arranged between the suction pipeline structures and the discharge pipeline structures and used for controlling the discharge of the gas in corresponding areas; The inside of the air suction pipeline structure is provided with a wind-following power mechanism, the outer side of the air suction pipeline structure is provided with a circulating filter mechanism, and the wind-following power mechanism can drive the circulating filter mechanism to rotate under the action of air flow so as to filter the air entering the discharge pipeline; one side of the air suction pipeline structure is provided with a cleaning mechanism, and the top of the air suction pipeline structure is provided with a knocking mechanism for cleaning the circulating filtering mechanism. Further, the exhaust pipeline structure comprises a main pipeline, a plurality of main pipelines are communicated through flanges, a supporting seat is fixed on the surface of the main pipeline and fixed above one side of a well through screws, and a butt joint pipe is arranged on one side of the main pipeline facing the center of the well. Further, the air suction pipeline structure comprises a branch pipeline arranged at the port of the butt joint pipe, the branch pipeline is horizontally arranged above the well, one end of the branch pipeline, deviating from the butt joint pipe, is fixed at the top of the well through a hanging bracket, and air suction ports are uniformly formed below the surface of the branch pipeline. Further, the end part of the branch pipeline is provided with a sealing end cover, and one end, close to the sealing end cover, of the upper surface of the branch pipeline is provided with a boss. Further, wind-following power unit includes the power shaft that horizontal rotation runs through the seal end cover, and the power shaft surface is provided with the support fretwork frame, and the one end of power shaft is provided with the impeller, and wind-following power unit still includes the transmission shaft that horizontal rotation runs through the boss, connec