Mining gas extraction conveying device

Abstract

The invention discloses a mining gas extraction conveying device which comprises at least one protective sleeve used for conveying gas, an extraction pump used for extracting gas and a conveying pipe located in the protective sleeve, and the protective sleeves are fixedly connected through a fixing sleeve in an airtight embedded mode. A first butt joint sleeve in airtight connection with the conveying pipe is fixedly installed in the middle of the fixing sleeve. The inner wall of the protective sleeve is coated with the manganese dioxide coating, ozone is filled in cooperation with the one-way gas pipe, when gas leaks to the protective sleeve in the conveying pipe, the ozone generates hydroxyl free radicals under catalysis of manganese dioxide, the hydroxyl free radicals and methane are subjected to an oxidation reaction, and the hydroxyl free radicals are decomposed into carbon dioxide and water, so that the explosion risk is reduced while the gas concentration is reduced; leaked gas is actively treated by utilizing a chemical catalysis principle, decomposition can be carried out when the gas leaks, the safety of the device is effectively improved, meanwhile, generated water prompts the leakage position through a dyeing patch of a drainage pipe, and timely maintenance is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of gas mining, and in particular to a mining gas extraction and transportation device. Background Art

[0002] In the coal mining field, gas usually refers to coalbed methane, which is a combustible gas with methane as the main component. It is widely present in coal seams and natural gas deposits. Mining gas extraction and transportation equipment is the core equipment for gas resource utilization. It is mainly used to extract gas from coal seams or goafs and safely transport it to designated locations through gas transportation pipeline systems. Gas is both a major hidden danger to coal mine production safety and a very valuable clean energy. Gas extraction technology can reduce underground risks and convert it into green energy.

[0003] Due to the complex distribution state of gas in coal seams, there are differences in gas pressure at different locations. Therefore, during the extraction of gas from coal seams, when the extraction equipment is located in an area with higher gas pressure in the coal seam, gas tends to actively flow into the extraction and transportation pipe. This phenomenon will cause the overload of the transportation device to increase, and then cause a sudden increase in pipeline pressure. This sudden change in pressure will reduce the safety of the transportation device during the gas transportation process. At the same time, this pressure instability can easily cause pipeline leakage, thereby posing a threat to the safety of mine operations.

[0004] To this end, a mine gas extraction and transportation device is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a mine gas extraction and transportation device to solve the problem raised in the above background technology that when the extraction equipment is located in an area with higher gas pressure in the coal seam, the load of the transportation device will be overloaded, and the pipeline pressure will suddenly rise. This sudden change in pressure will reduce the safety of the transportation device during the gas transportation process. At the same time, this pressure instability will easily cause pipeline leakage, thereby posing a threat to the safety of mine operations.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A mining gas extraction and conveying device comprises at least one protective casing for conveying gas and an extraction pump for extracting gas, and a conveying pipe arranged inside the protective casing, wherein the protective casings are fixedly connected by an airtight interlocking connection via a fixed sleeve, a docking casing airtightly connected to the conveying pipe is fixedly installed in the middle of the fixed sleeve, one-way air pipes are fixedly installed in both sides of the protective casing, and the two sides are respectively used for air intake and air outlet, the inner wall of the protective casing is evenly coated with a manganese dioxide coating, and the one-way air pipe for air intake is used to fill with ozone gas, an extraction pipe is installed above one end of the protective casing, and the extraction pipe passes through the protective casing and is connected to the conveying pipe;

[0008] A bearing sleeve is fixedly mounted in the interior of the delivery pipe, and threaded delivery rods are fixedly mounted at both ends of the bearing sleeve, and the bearing sleeve and the threaded delivery rod are both hollow and through-set. A diverter pipe is fixedly mounted in the middle of the first docking sleeve, which is positioned opposite to the hollow threaded delivery rod, and diverter holes are equidistantly penetrated on the diverter pipe, and a centrifugal mechanism is mounted on one end of each threaded delivery rod;

[0009] The centrifugal mechanism includes a fixed base, and a fixed rod for engaging and fixing it on the threaded conveying rod is fixedly installed equidistantly on the outer side of the fixed base. A spring part 2 is equidistantly installed on one side of the centrifugal mechanism, one end of the spring part 2 is fixedly connected to the inner wall of the fixed base, and the other end of the spring part 2 is fixedly connected to the sleeve rod. A centrifugal fan is provided on one side of the fixed rod, and the centrifugal fan is equidistantly installed on the outer side of the fixed base. An inlay rod is fixedly installed on the inner side of the centrifugal fan, and the inlay rod is movably installed in the inner side of the fixed base in a limited position. An insertion rod is fixedly installed on one end of the inlay rod, and the insertion rod is in an inlay connection with the sleeve rod.

[0010] In the above scheme, preferably: support rods for supporting the delivery pipe are fixedly installed equidistantly around the inside of the protective sleeve, and a partition plate is fixedly installed in the middle of the protective sleeve and is airtightly fitted with the delivery pipe. Drain pipes are fixedly installed at both ends of the lower part of the protective sleeve, and the lower part of the drain pipe is sealed with a dye plug.

[0011] In the above scheme, preferably: a sealing block is fixedly installed at one end of the inside of the one-way air pipe, a honeycomb panel that allows gas to flow is fixedly installed at the other end of the inside of the one-way air pipe, a spring component 1 is fixedly installed on one side of the honeycomb panel, a sealing head is fixedly installed on one side of the spring component 1, and the sealing head is airtightly fitted to the sealing block.

[0012] In the above scheme, preferably: a guide plate for gas diversion is fixedly installed at the other end of the one-way air pipe for air outlet, a reed for blowing air to make sound is provided in the middle of the guide plate, and the reed is fixedly installed in the center of the guide plate.

[0013] In the above scheme, preferably: the extraction pipe includes an extraction pipe body for extracting gas deep into the coal seam, and the position where the extraction pipe is embedded in the protective sleeve is equidistantly surrounded by ventilation plates that are movably installed, and the top of the ventilation plates are movably connected with spring rods.

[0014] In the above solution, preferably, the two ends of the spring rod are respectively engaged and movably connected with the inner wall of the extraction tube and the ventilation piece, a tension sensor is provided inside the ventilation piece, and the tension sensor is connected to the extraction pump signal.

[0015] In the above scheme, preferably: one end of the protective sleeve in the front section is nested and fixedly installed with a connecting cover for sealing, and the interior of the connecting cover is provided with a docking sleeve 2 which is airtightly fixedly connected to the conveying pipe, one end of the connecting cover is through-connected with a connecting pipe, and the connecting pipe is through-connected with the extraction pump, and one end of the protective sleeve in the rear section is nested and fixedly installed with a sealing cover for sealing.

[0016] In the above scheme, preferably: a fixing plate is fixedly installed at equal intervals on the outer side of the bearing sleeve, and the bearing sleeve is fixedly installed inside the conveying pipe through the fixing plate, and a ball is movably installed in the interior of the bearing sleeve at equal intervals, and the ball is located between the drain pipe and the bearing sleeve and is movably set to limit position.

[0017] The present invention provides a mining gas extraction and transportation device, which has the following technical features and beneficial effects:

[0018] 1. The present invention applies a manganese dioxide coating on the inner wall of the protective sleeve and uses a one-way air pipe to inject ozone. When gas leaks into the protective sleeve from the delivery pipe, ozone generates hydroxyl radicals under the catalysis of manganese dioxide, which undergo an oxidation reaction with methane, decomposing it into carbon dioxide and water, thereby reducing the gas concentration and the risk of explosion. The leaked gas is actively treated by utilizing the principle of chemical catalysis, and can be decomposed when it leaks, effectively improving the safety of the device. At the same time, the generated water indicates the leakage location through the dyed plug of the drain pipe, facilitating timely maintenance.

[0019] 2. The present invention realizes the dynamic pressure balance function during the gas transportation process by designing a linkage structure of a centrifugal mechanism and a threaded conveying rod in the conveying pipe. When high-pressure gas flows into the extraction pipe, the power of the extraction pump is increased to accelerate the rotation speed of the threaded conveying rod. The centrifugal fan expands under the action of centrifugal force, reducing the flow space of the conveying pipe and increasing the air intake of the diversion pipe. The pressure in the pipeline is adjusted by changing the gas flow cross-sectional area, so that the pressure difference between the conveying pipe and the coal seam gas pressure gradually decreases, avoiding pipeline leakage or equipment overload caused by sudden pressure rise, and preventing the coal seam from being damaged due to rapid pressure relief.

[0020] 3. The present invention realizes the intelligent power regulation function during gas extraction by designing a linkage device of a vent plate and a tension sensor at the place where the extraction pipe is embedded in the protective casing. When the high-pressure gas pushes the vent plate to compress the spring rod, the tension sensor transmits the tension change signal to the extraction pump, so that it automatically increases the output power and speeds up the rotation rate of the threaded conveying rod to cope with the sudden influx of high-pressure gas. This design can dynamically adjust the extraction power according to real-time pressure changes, avoid the lag of manual adjustment, ensure that the extraction system can operate stably under different air pressure environments, and enhance the adaptability of the device to complex coal seam gas occurrence conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of the connecting cover in the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the delivery pipe in the present invention;

[0024] Figure 4 It is a schematic diagram of the partial structure of the threaded conveying rod in the present invention;

[0025] Figure 5 Schematic diagram of the internal structure of the protective sleeve in the present invention;

[0026] Figure 6 Schematic diagram of the internal structure of the one-way air pipe in the present invention;

[0027] Figure 7 Schematic diagram of the partial structure of the reed in the present invention;

[0028] Figure 8 For the present invention Figure 4 A magnified schematic diagram of the local structure at point A;

[0029] Figure 9 For the present invention Figure 5 A magnified schematic diagram of the local structure at point B in the middle;

[0030] Figure 10 For the present invention Figure 5 Enlarged schematic diagram of the local structure at point C in the middle.

[0031] In the figure: 1. Protective sleeve; 101. Separator plate; 102. Support rod; 2. Extraction pump; 3. Connecting pipe; 4. Fixing sleeve; 401. Connecting sleeve 1; 402. Diverter pipe; 403. Diverter hole; 5. Extraction pipe; 501. Spring rod; 502. Ventilation plate; 6. Connecting cover; 601. Connecting sleeve 2; 7. One-way air pipe; 701. Sealing block; 702. Sealing head; 703. Spring component 1; 704. Honeycomb panel; 705. Guide plate; 706. Reed; 8. Sealing cover; 9. Delivery pipe; 901. Bearing sleeve; 902. Ball; 903. Fixing plate; 10. Threaded delivery rod; 11. Centrifugal mechanism; 1101. Fixed base; 1102. Fixed rod; 1103. Centrifugal fan; 1104. Inlaid rod; 1105. Insert rod; 1106. Spring part 2; 1107. Sleeve rod; 12. Drain pipe; 1201. Dye plug. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1 to 10 The present invention provides a technical solution for a mine gas extraction and transportation device:

[0034] A mining gas extraction and conveying device includes at least one protective casing 1 for conveying gas and an extraction pump 2 for extracting gas, and a conveying pipe 9 arranged inside the protective casing 1. The protective casings 1 are airtightly interlocked and fixedly connected by a fixed sleeve 4. A docking casing 401 airtightly connected to the conveying pipe 9 is fixedly installed in the middle of the fixed sleeve 4. One-way air pipes 7 are interlocked and fixedly installed on both sides of the protective casing 1, and the two sides are respectively used for air intake and air outlet. The inner wall of the protective casing 1 is evenly coated with a manganese dioxide coating, and the one-way air pipe 7 for air intake is used to fill with ozone gas. An extraction pipe 5 is installed above one end of the protective casing 1, and the extraction pipe 5 passes through the protective casing 1 and is connected to the conveying pipe 9;

[0035] As an embodiment of the present invention, Figures 1 to 10 As shown, support rods 102 for supporting the delivery pipe 9 are fixedly installed equidistantly inside the protective sleeve 1, and a partition plate 101 is fixedly installed in the middle of the protective sleeve 1 to be airtightly fitted with the delivery pipe 9. Drain pipes 12 are fixedly installed at both ends of the lower part of the protective sleeve 1, and the lower part of the drain pipes 12 is sealed with dye plugs 1201.

[0036] During operation, ozone is filled into the protective sleeve 1 through the one-way air intake pipe 7, and an ozone storage space is formed between the two protective sleeves 1 through the partition plate 101, and the delivery pipe 9 is supported by the support rod 102. The manganese dioxide coating on the inner wall of the protective sleeve 1 catalyzes the decomposition of ozone to generate strong oxidizing substances such as hydroxyl radicals. When the extraction pipe 5 extracts and delivers the gas (mainly methane) to the delivery pipe 9, when the gas leaks during transportation through the delivery pipe 9, the hydroxyl radicals in the protective sleeve 1 react with the leaked methane to oxidize it, thereby reducing the gas concentration and decomposing it into carbon dioxide and water, and the protective sleeve 1 The water generated inside will accumulate in the drain pipe 12, and the drain pipe 12 will be sealed by the dyed plug 1201 to prevent direct discharge, and at the same time, an airtight seal will be created inside the protective sleeve 1. When water accumulates in the drain pipe 12, the dyed plug 1201 with dye pigment will gradually dissolve in the water. When the water generated in the protective sleeve 1 reaches a level sufficient to completely dissolve the dyed plug 1201, the dyed plug 1201 is completely dissolved, and the drain pipe 12 discharges the dyed water to serve as a gas leakage warning. At this time, the staff can inspect and maintain the protective sleeve 1 in the discharge section to ensure the safe operation of the device.

[0037] As an embodiment of the present invention, Figure 6 and Figure 7 As shown, a sealing block 701 is fixedly installed at one end of the one-way air pipe 7, and a honeycomb plate 704 that allows gas to circulate is fixedly installed at the other end of the one-way air pipe 7. A spring member 703 is fixedly installed on one side of the honeycomb plate 704, and a sealing head 702 is fixedly installed on one side of the spring member 703. The sealing head 702 is airtightly fitted with the sealing block 701. A guide plate 705 for guiding gas is fixedly installed at the other end of the one-way air pipe 7 for gas outlet. A reed 706 for blowing air to produce sound is provided in the middle of the guide plate 705, and the reed 706 is fixedly installed at the center of the guide plate 705.

[0038] During operation, the sealing head 702 in the air intake one-way air pipe 7 is first pushed in to cancel the fit with the sealing block 701, and then the air is extracted by inserting the air extraction device into the air intake one-way air pipe 7 to extract the gas in the protective sleeve 1, and then the air is extracted. The sealing head 702 in the air intake one-way air pipe 7 fits with the sealing block 701 under the action of the spring member 1 703. Only when the ozone pressure is greater than the spring force, the sealing head 702 is pushed open, and the one-way air intake is realized through the honeycomb plate 704. When the ozone gas content in the protective sleeve 1 is sufficient, the excess ozone gas is discharged through the air outlet one-way air pipe 7, and the guide plate 705 in the air outlet one-way air pipe 7 guides the airflow. The reed 706 is blown by the airflow to vibrate and make a sound when the airflow passes through, thereby indicating that the ozone inflation is completed.

[0039] As an embodiment of the present invention, Figure 1 and Figure 9 As shown, the extraction pipe 5 includes an extraction pipe body for extracting gas from deep coal seams. Ventilation plates 502 are equidistantly and movably mounted around the position where the extraction pipe 5 is embedded in the protective casing 1. Spring rods 501 are movably connected to the tops of the ventilating plates 502. The two ends of the spring rods 501 are movably connected to the inner wall of the extraction pipe 5 and the ventilating plates 502, respectively. A tension sensor is provided inside the ventilating plates 502, and the tension sensor is connected to the extraction pump 2 signal.

[0040] During operation, when in use, the gas in the coal seam is normally drawn into the extraction pipe 5 through the extraction pipe 5 under the operation of the extraction pump 2. When the high-pressure gas in the coal seam flows into the extraction pipe 5, the gas pressure pushes the vent plate 502 to compress the spring rod 501, and the vent plate 502 expands downward, thereby pulling the spring rod 501 out. At this time, the tension sensor senses the change in tension when the spring rod 501 is extended, and transmits this tension change signal to the extraction pump 2. At this time, the processor in the extraction pump 2 processes this change signal to send an output power increase instruction to the controller to increase the output power of the extraction pump 2 to increase the rotation rate of the threaded delivery rod 10 in the delivery pipe 9.

[0041] As an embodiment of the present invention, Figures 1 to 4 As shown, one end of the front section protective sleeve 1 is nested and fixedly installed with a connecting cover 6 for sealing, and the interior of the connecting cover 6 is provided with a docking sleeve 2 601 which is airtightly fixedly connected to the delivery pipe 9, one end of the connecting cover 6 is connected through the connecting pipe 3, and the connecting pipe 3 is connected through the extraction pump 2, and one end of the rear section protective sleeve 1 is nested and fixedly installed with a sealing cover 8 for sealing, a fixing plate 903 is fixedly installed equidistantly on the outside of the bearing sleeve 901, and the bearing sleeve 901 is fixedly installed inside the delivery pipe 9 through the fixing plate 903, and a ball bearing 902 is equidistantly and movably installed inside the bearing sleeve 901, and the ball bearing 902 is located between the drain pipe 12 and the bearing sleeve 901 and is movably arranged to limit position;

[0042] During operation, the protective sleeve 1 and the delivery pipe 9 are sealed and docked through the connecting cover 6 and the docking sleeve 2 601, and the multiple protective sleeves 1 and the delivery pipe 9 are sealed and docked through the fixing sleeve 4 and the docking sleeve 1 401, and the front and end of the multiple protective sleeves 1 are sealed through the connecting cover 6 and the sealing cover 8, and the gas extracted in the delivery pipe 9 is transported, collected and processed through the connecting pipe 3, the connecting cover 6 and the extraction pump 2. 901, and the bearing sleeve 901 is fixedly installed inside the delivery pipe 9 through the fixing plate 903. The drainage pipe 12 is limited and nested by the bearing sleeve 901, and the ball 902 is used to reduce the friction between the bearing sleeve 901 and the drainage pipe 12, so that the threaded delivery rod 10 can rotate in the delivery pipe 9. When the rotation speed of the threaded delivery rod 10 in the delivery pipe 9 increases, the centrifugal fan 1103 on the centrifugal mechanism 11 overcomes the elastic force of the spring member 2 1106 and extends outward under the action of centrifugal force.

[0043] As an embodiment of the present invention, Figures 2 to 8 As shown, a bearing sleeve 901 is fixedly installed in the interior of the delivery pipe 9, and a threaded delivery rod 10 is fixedly installed at both ends of the bearing sleeve 901, and the bearing sleeve 901 and the threaded delivery rod 10 are both hollow and through-set. A diverter pipe 402 is fixedly installed in the middle of the docking sleeve 401, which is opposite to the hollow threaded delivery rod 10, and diverter holes 403 are equidistantly penetrated on the diverter pipe 402. A centrifugal mechanism 11 is fixedly installed at one end of the threaded delivery rod 10. The centrifugal mechanism 11 includes a fixed base 1101, and fixed rods 1102 for fixing it to the threaded delivery rod 10 are fixedly installed equidistantly on the outside of the fixed base 1101. The centrifugal mechanism A spring member 1106 is equidistantly installed around one side of 11, one end of the spring member 1106 is fixedly connected to the inner wall of the fixed base 1101, and the other end of the spring member 1106 is fixedly connected to a sleeve rod 1107. A centrifugal fan 1103 is provided on one side of the fixed rod 1102, and the centrifugal fan 1103 is equidistantly installed around the outer side of the fixed base 1101. An inlay rod 1104 is fixedly installed on the inner side of the centrifugal fan 1103, and the inlay rod 1104 is movably installed in a limited position inlaid on the inner side of the fixed base 1101. An insertion rod 1105 is fixedly installed on one end of the inlay rod 1104, and the insertion rod 1105 is inlaid and connected with the sleeve rod 1107.

[0044] During operation, the fixed base 1101 is installed in the delivery pipe 9 through the fixed rod 1102, and the extraction pump 2 generates negative pressure through the connecting pipe 3. The gas enters the delivery pipe 9 through the extraction pipe 5 and is transported forward along the spiral structure of the threaded delivery rod 10. The threaded delivery rod 10 is driven to rotate by the wind during the gas flow process. When the gas pressure value in the extraction area is high, the gas enters the extraction pipe 5 under active extraction and high-pressure influx. At this time, the gas flow rate in the delivery pipe 9 is accelerated, and the threaded delivery rod 10 is pushed by the airflow. As the speed increases, the centrifugal fan 1103 gradually extends under the action of centrifugal force, and the centrifugal fan 1103 drives the embedded rod 1104 and the inserted rod 1105 to move outward, and the inserted rod 1105 drives the sleeve rod 1107 to compress the spring member 1106. At this time, the outer side of the centrifugal fan 1103 gradually tends to fit close to the inner wall of the conveying pipe 9, so that the cross-sectional area of the centrifugal fan 1103 in the conveying pipe 9 is increased, and the cross-sectional area of the hollow threaded conveying rod 10 is reduced, thereby increasing the centrifugal fan 1103 in the conveying pipe 9. The cross-sectional area of the delivery pipe 9 is reduced to reduce the flow space of the gas in the delivery pipe 9, and at the same time, more gas enters the diversion pipe 402 through the diversion hole 403, and enters the hollow threaded delivery rod 10 through the diversion pipe 402, so that the other gas in the rear section can be normally transported through the flow in the threaded delivery rod 10. By reducing the flow space of the gas in the delivery pipe 9, the flow of gas in the delivery pipe 9 is blocked, and the gas in the delivery pipe 9 is increased. The gas pressure gradually reduces the pressure difference with the high-pressure gas in the coal seam, and the gas pressure in this section of the conveying pipe 9 increases, so that its flow rate increases, and thus the rotation rate of this section of the threaded conveying rod 10 in the conveying pipe 9 is maintained to keep the cross-sectional area in the conveying pipe 9 increased when the centrifugal fan 1103 is extended, thereby avoiding the excessive gas pressure in this section of the conveying pipe 9 from impacting the gas in the rear and causing backflow, and at the same time avoiding the rapid decompression of the gas pressure in the coal seam, causing the coal seam to lose pressure, and leading to damage or collapse of the coal seam structure.

[0045] Working principle: During operation, the protective sleeve 1 and the delivery pipe 9 are sealed and connected by the connecting cover 6 and the docking sleeve 2 601. At the same time, the multiple protective sleeves 1 are sealed and connected to the delivery pipe 9 by using the fixing sleeve 4 and the docking sleeve 1 401. In addition, the front ends and the ends of the multiple protective sleeves 1 are sealed by the connecting cover 6 and the sealing cover 8. The through connection of the connecting pipe 3, the connecting cover 6 and the extraction pump 2 ensures that the gas extracted in the delivery pipe 9 can be effectively transported, collected and processed. Since the threaded delivery rod 10 is fixedly mounted on both sides of the bearing sleeve 901, and the bearing sleeve 901 is fixed to the inside of the delivery pipe 9 by the fixing plate 903, the drainage pipe 12 is limited and nested by the bearing sleeve 901, and the ball bearing 902 is used to reduce the friction between the bearing sleeve 901 and the drainage pipe 12, so that the threaded delivery rod 10 can rotate smoothly in the delivery pipe 9.

[0046] When the rotation speed of the threaded conveying rod 10 in the conveying pipe 9 increases, the centrifugal fan 1103 on the centrifugal mechanism 11 expands outward under the action of centrifugal force, overcoming the elastic force of the second spring member 1106. Through the extraction pipe 5, under the action of the extraction pump 2, the gas in the coal seam is effectively sucked into the extraction pipe 5. When high-pressure gas flows into the extraction pipe 5 from the coal seam, the gas pressure pushes the vent plate 502 to compress the spring rod 501. The vent plate 502 expands downward, thereby pulling the spring rod 501 out. At this time, the tension sensor detects the change in tension when the spring rod 501 is extended, and transmits this change signal to the extraction pump 2. After the processor in the extraction pump 2 processes this change signal, it sends an instruction to the controller to increase the output power, thereby increasing the output power of the extraction pump 2 and further increasing the rotation speed of the threaded conveying rod 10 in the conveying pipe 9.

[0047] After the air is exhausted, the sealing head 702 in the air intake unidirectional air pipe 7 is pressed against the sealing block 701, and the air is exhausted. Into strong oxidizing substances such as hydroxyl free radicals. When the extraction pipe 5 extracts the gas and transports it to the delivery pipe 9, if the gas leaks during the transportation process, the hydroxyl free radicals in the protective sleeve 1 will react with the leaked methane for oxidation, which not only reduces the gas concentration, but also decomposes it into carbon dioxide and water. The water generated in the protective sleeve 1 will accumulate in the drain pipe 12, and the drain pipe 12 is blocked by the dye plug 1201 to prevent direct discharge. At the same time, it is used to create an airtight seal in the protective sleeve 1. When the water accumulates to a certain extent in the drain pipe 12, the dye plug 1201 with the dye pigment will gradually dissolve. When the water generated in the protective sleeve 1 is sufficient to completely dissolve the dye plug 1201, the drain pipe 12 will discharge the dyed water to remind the gas leakage. At this time, the staff can inspect and maintain the protective sleeve 1 in the discharge section to ensure the safe operation of the device.

[0048] The extraction pump 2 generates negative pressure through the connecting pipe 3, and the gas enters the conveying pipe 9 through the extraction pipe 5 and is conveyed forward along the spiral structure of the threaded conveying rod 10. During the gas flow, the threaded conveying rod 10 rotates under the action of wind. When the gas pressure in the extraction area is high, the gas enters the extraction pipe 5 under the action of active extraction and high-pressure influx. At this time, the gas flow rate in the conveying pipe 9 is accelerated, and the rotation speed of the threaded conveying rod 10 is increased due to the push of the airflow. The centrifugal fan 1103 gradually extends under the action of centrifugal force, and the embedded rod 1104 and the insertion rod 1105 are driven outward by the centrifugal force. The insertion rod 1105 then pushes the sleeve rod 1107 to compress the spring part 2 1106. As the outer side of the centrifugal fan 1103 gradually fits and approaches the inner wall of the conveying pipe 9, its cross-sectional area in the conveying pipe 9 increases, while the cross-sectional area of the hollow threaded conveying rod 10 decreases accordingly. In this way, the cross-sectional area of the centrifugal fan 1103 in the conveying pipe 9 increases, thereby reducing the gas in this section of the conveying pipe 9. The gas circulation space is reduced, and at the same time, more gas enters the diversion pipe 402 through the diversion hole 403, and enters the hollow threaded conveying rod 10 through the diversion pipe 402. In this way, the gas in the rear section can be normally transported through the circulation in the threaded conveying rod 10. By reducing the circulation space of the gas in this section of the conveying pipe 9, the circulation of the gas in this section of the conveying pipe 9 is blocked, and at the same time, the gas pressure in this section of the conveying pipe 9 is increased, and the pressure difference with the high-pressure gas in the coal seam is gradually reduced. As the gas pressure in this section of the conveying pipe 9 increases, the flow rate also increases accordingly, which helps to maintain the rotation rate of the threaded conveying rod 10 in the conveying pipe 9. In this way, the state of increasing the cross-sectional area in the conveying pipe 9 when the centrifugal fan 1103 is extended can be maintained, thereby avoiding the impact of excessive gas pressure in this section of the conveying pipe 9 on the gas in the rear and backflow. At the same time, this also prevents the rapid pressure relief of gas pressure in the coal seam, avoids decompression of the coal seam, and prevents damage or collapse of the coal seam structure.

[0049] It should be noted that the tension sensor is mainly used to monitor the tension generated when the vent 502 is opened and the spring rod 501 is extended. The tension sensor is a prior art and its model may be GAD100, which will not be described in detail here.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A mining gas extraction and conveying device, comprising at least one protective casing for conveying gas, a gas extraction pump for extracting gas, and a conveying pipe disposed inside the protective casing, characterized in that: The protective sleeves are fixedly connected by a fixed sleeve in an airtight manner. A docking sleeve that is airtightly connected to the delivery pipe is fixedly installed in the middle of the fixed sleeve. One-way air pipes are fixedly installed on both sides of the protective sleeve, and the two sides are respectively used for air intake and air outlet. The inner wall of the protective sleeve is evenly coated with a manganese dioxide coating, and the one-way air pipe for air intake is used to fill with ozone gas. An extraction pipe is installed above one end of the protective sleeve, and the extraction pipe passes through the protective sleeve and is connected with the delivery pipe. A bearing sleeve is fixedly mounted in the interior of the delivery pipe, and threaded delivery rods are fixedly mounted at both ends of the bearing sleeve, and the bearing sleeve and the threaded delivery rod are both hollow and through-set. A diverter pipe is fixedly mounted in the middle of the first docking sleeve, which is positioned opposite to the hollow threaded delivery rod, and diverter holes are equidistantly penetrated on the diverter pipe, and a centrifugal mechanism is mounted on one end of each threaded delivery rod; The centrifugal mechanism includes a fixed base, and a fixed rod for engaging and fixing it on the threaded conveying rod is fixedly installed equidistantly on the outer side of the fixed base. A spring part 2 is equidistantly installed on one side of the centrifugal mechanism, one end of the spring part 2 is fixedly connected to the inner wall of the fixed base, and the other end of the spring part 2 is fixedly connected to the sleeve rod. A centrifugal fan is provided on one side of the fixed rod, and the centrifugal fan is equidistantly installed on the outer side of the fixed base. An inlay rod is fixedly installed on the inner side of the centrifugal fan, and the inlay rod is movably installed in the inner side of the fixed base in a limited position. An insertion rod is fixedly installed on one end of the inlay rod, and the insertion rod is in an inlay connection with the sleeve rod.

2. A mining gas extraction and transportation device according to claim 1, characterized in that: The interior of the protective sleeve is equidistantly fixed with support rods for supporting the delivery pipe, and the middle of the protective sleeve is fixed with a partition plate that is airtightly fitted with the delivery pipe. Drain pipes are fixedly installed at both ends of the lower part of the protective sleeve, and the lower part of the drain pipe is sealed with a dye plug.

3. A mining gas extraction and transportation device according to claim 1, characterized in that: A sealing block is fixedly installed at one end of the one-way air pipe, and a honeycomb panel that allows gas to circulate is fixedly installed at the other end of the one-way air pipe. A spring component 1 is fixedly installed on one side of the honeycomb panel, and a sealing head is fixedly installed on one side of the spring component 1, and the sealing head and the sealing block are arranged in an airtight fit.

4. A mining gas extraction and transportation device according to claim 3, characterized in that: A guide plate for gas diversion is fixedly installed at the other end of the one-way air pipe for air outlet, and a reed for air blowing and sound production is provided in the middle of the guide plate, and the reed is fixedly installed at the center of the guide plate.

5. The mining gas extraction and transportation device according to claim 1, characterized in that: The extraction pipe includes an extraction pipe body for extracting gas deep into the coal seam. Ventilation plates are equidistantly and movably installed around the position where the extraction pipe is embedded in the protective sleeve, and spring rods are movably connected above the ventilation plates.

6. A mining gas extraction and transportation device according to claim 5, characterized in that: The two ends of the spring rod are respectively engaged and movably connected with the inner wall of the extraction pipe and the ventilation piece. A tension sensor is provided inside the ventilation piece, and the tension sensor is connected to the extraction pump signal.

7. The mining gas extraction and transportation device according to claim 1, characterized in that: One end of the protective sleeve described in the front section is nested and fixedly installed with a connecting cover for sealing, and the interior of the connecting cover is provided with a docking sleeve 2 which is airtightly fixedly connected to the delivery pipe. One end of the connecting cover is through-connected with a connecting pipe, and the connecting pipe is through-connected with the extraction pump. One end of the protective sleeve described in the rear section is nested and fixedly installed with a sealing cover for sealing.

8. The mining gas extraction and transportation device according to claim 1, characterized in that: The outer side of the bearing sleeve is fixedly installed with a fixing plate at equal intervals, and the bearing sleeve is fixedly installed inside the conveying pipe through the fixing plate. The interior of the bearing sleeve is equidistantly and movably installed with ball bearings, and the ball bearings are positioned between the drainage pipe and the bearing sleeve and are movably arranged.

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