Gas extraction and treatment device for gas power generation

Abstract

The present application relates to the technical fields of gas power generation and gas transportation, and particularly relates to a gas extraction and treatment device for gas power generation, which comprises an air inlet pipe and an air outlet pipe, the air inlet pipe is located above the air outlet pipe, the air inlet pipe and the air outlet pipe are connected through a pipe group, a filter head is coaxially installed inside the pipe group, the filter head is provided in a gas permeable manner, the upper end of the filter head is conical, a gap is provided between the outer ring surface of the filter head and the inner wall of the pipe group, and a storage structure for collecting impurities is installed between the lower end of the filter head and the inner wall of the pipe group. The impurities are contacted with the filter head by the gas, the gas passes through the filter head, the filter head blocks the impurities on the upper side, the filtered gas is discharged from the air outlet pipe into the power generation device, since the filter head is conical, the impurities blocked by the filter head move to the outer ring side of the filter head under the blowing of the airflow, the impurities are stored in the storage structure, and the filter head can filter the impurities in the gas for a long time.

Description

Technical Field

[0001] This invention relates to the technical field of gas transportation in gas power generation, and in particular to a gas extraction and treatment device for gas power generation. Background Technology

[0002] Methane gas safe power generation is a technology that uses ventilation systems to remove underground coal mine gas (mainly methane) and convert it into electricity. It has the triple benefits of safe production, resource utilization and environmental protection. The underground gas is extracted to the surface for power generation through the ventilation system.

[0003] Chinese patent CN111878155A discloses a low-concentration methane power generation device for coal mines, comprising: a component group and a control group. The component group includes at least two boreholes, a drainage branch pipe, a drainage main pipe, an electrically controlled throttle valve, an air valve, a water ring vacuum pump, a conveying pipeline, a first combustion chamber, a generator, an exhaust pipe, an exhaust valve, and a recycling device. The control group includes a sensing unit, a valve group, and a control unit. The control unit receives real-time electrical signals generated by the sensing unit. The control unit has a reference information group, and compares the information in the real-time electrical signals with the information in the reference information group to generate a first response level control program and a second response level control program. The control unit controls the power generation device according to the response level control program. The valve assembly is operated by the aforementioned valve group. This invention solves the problems of unmanageable toxic gases such as CO generated during gas combustion power generation and unstable power supply from gas generators. The aforementioned related technologies have the following defects: when the gas for power generation is extracted and transported from underground, impurity particles will be mixed in the transported gas. In order to prevent the particles in the gas from affecting the power generation device, a filter structure is set in the pretreatment device to filter the impurities in the gas. Existing filter structures generally block impurities through filter discs or filter plates. However, as the gas is transported, impurities will gradually accumulate at the filter structure, affecting subsequent gas transport. Therefore, a gas extraction and treatment device for gas power generation is proposed, which can continuously filter impurities in the gas. Summary of the Invention

[0004] In order to ensure a stable and continuous gas supply during the filtration of impurities in the gas, this invention provides a gas extraction and treatment device for gas power generation.

[0005] The present invention provides a gas extraction and treatment device for gas power generation, which adopts the following technical solution: it includes an inlet pipe and an outlet pipe, the inlet pipe is located above the outlet pipe, the inlet pipe and the outlet pipe are connected by a pipe assembly, a filter head is coaxially installed inside the pipe assembly, the filter head is permeable, the upper end of the filter head is conical, the outer ring surface of the filter head is separated from the inner wall of the pipe assembly, and a storage structure for collecting impurities is installed between the lower end of the filter head and the inner wall of the pipe assembly.

[0006] The storage structure is positioned in contact with the upper end of the outlet pipe.

[0007] Optionally, the impurity storage structure includes a ring plate and a rotating ring, with the rotating ring coaxially contacting the lower side of the ring plate. The ring plate is installed between the filter head and the tube assembly, and the bottom surface of the rotating ring is in contact with the upper end surface of the air outlet pipe.

[0008] A collection structure is installed on the outside of the rotating ring, and the upper end of the collection structure is connected to the lower end of the pipe group.

[0009] The end face of the ring plate has multiple evenly distributed through holes, and the upper end face of the rotating ring has multiple evenly distributed transmission holes.

[0010] The distance between the transfer hole and the axis of the rotating ring is equal to the distance between the through hole and the axis of the rotating ring, and the lower end of the transfer hole is connected to the collection structure.

[0011] Optionally, a shaft is rotatably inserted at the axis of the filter head, and multiple evenly distributed spiral plates are installed at one end of the shaft on the lower side of the filter head. The spiral plates are located inside the air outlet pipe, and the lower end of the shaft is rotatably connected to the inner wall of the air outlet pipe.

[0012] The shaft is equipped with a transmission structure that drives the rotating ring to rotate on the lower part of the filter head.

[0013] Optionally, the collection structure includes a collection cylinder and a reducing pipe, the upper end of the reducing pipe being smaller than the lower end of the reducing pipe, the upper end of the reducing pipe being fixedly sleeved on the upper end of the outlet pipe, the rotating ring being rotatably inserted into the inner ring surface of the upper end of the reducing pipe, and the upper end of the reducing pipe being connected to the lower end of the pipe assembly.

[0014] The collecting cylinder is connected to the lower end of the reducing pipe. A movable collar is slidably sleeved on the outer surface of the lower end of the reducing pipe. The lower end of the movable collar contacts the inner bottom wall of the collecting cylinder. The movable collar is fixed to the outer surface of the air outlet pipe.

[0015] The reducing tube has multiple evenly distributed, vertically penetrating bent holes on its end face. The lower end of the bent hole is connected to the inside of the collecting cylinder, and the distance between the upper axis of the bent hole and the axis of the rotating ring is equal to the distance between the through hole and the axis of the rotating ring.

[0016] Optionally, the inner conical ring surface of the filter head is fixed with multiple force plates arranged in multiple layers. The multiple force plates in each layer are evenly distributed around the axis of the filter head. Inside the filter head, at each force plate layer, there is a striking ball. The striking ball is connected to the circumferential side of the shaft by a soft rope.

[0017] Optionally, the number of bent holes is equal to the number of through holes, and the number of bent holes is equal to one-third of the number of transmission holes.

[0018] The through hole is offset from the adjacent transmission hole.

[0019] Optionally, an air ring is coaxially arranged on the outside of the air inlet pipe, and a one-way vacuum pump is installed in connection with the air ring. The other end of the one-way vacuum pump penetrates through the outer surface of the pipe assembly. A return air extraction pipe is inserted through the upper surface of the ring plate and between each pair of adjacent through holes. The upper end of the return air extraction pipe penetrates through the inner wall of the air inlet pipe and is connected to the air ring.

[0020] The distance between the axis of the end of the return air extraction pipe connected to the ring plate and the axis of the rotating ring is equal to the distance between the through hole and the axis of the ring plate. The number of return air extraction pipes is equal to one-third of the number of transfer holes. The transfer holes are located between the through hole and the upper end of the bend hole.

[0021] Optionally, the transmission structure includes an end cover and a shaft cylinder, with the shaft cylinder rotatably contacting the underside of the end cover, the end cover rotatably sleeved on the outer surface of the shaft, and the end cover connected to the inner wall of the filter head via a connecting structure.

[0022] The shaft sleeve is fixedly sleeved on the outer surface of the shaft rod. A sleeve plate is installed through the circumference of the shaft sleeve. The extension line of the sleeve plate coincides with the axis of the shaft rod. A lever plate is slidably inserted inside the sleeve plate. Multiple evenly distributed blocks are fixed on the inner ring surface of the rotating ring. The number of blocks is equal to the number of transmission holes. The blocks and lever plates are on the same plane.

[0023] The dial plate is threaded with a reciprocating screw at one end near the shaft, and the sleeve plate is rotatably sleeved on the outer surface of the reciprocating screw at one end near the shaft. A bevel gear is coaxially fixed at one end of the reciprocating screw inside the shaft cylinder. A bevel gear ring meshes with the upper side of the bevel gear. The bevel gear ring is coaxial with the shaft and is installed on the bottom surface of the end cover.

[0024] A triangular block is provided in contact with the inner ring surface of the rotating ring. The triangular block is located below the stop block, and the upper end of the triangular block is pointed. The bottom surface of the triangular block is elastically connected to the inner wall of the air outlet pipe. The maximum width of the triangular block is greater than the distance between two adjacent stop blocks, and the tip of the triangular block is located between two adjacent stop blocks.

[0025] Optionally, the connection structure includes an air guide cylinder and a vertical rod. The upper end of the air guide cylinder is coaxially and fixedly inserted into the lower end of the filter head. The air guide cylinder is rotatably sleeved on the outer surface of the shaft. The two ends of the vertical rod are respectively fixed to the end cap and the air guide cylinder. The air guide cylinder is eccentrically set with respect to the shaft, and the lower end of the air guide cylinder is within the range of the spiral plate.

[0026] Optionally, the upper end of the through hole is arc-shaped, the upper ends of two adjacent through holes are concave arcs that contact each other, and the transmission hole is equidistant from the adjacent through holes and bending holes.

[0027] In summary, the present invention has the following beneficial technical effects:

[0028] 1. This invention, by setting up components such as a filter head, a storage structure, and a pipe assembly, allows gas extracted from underground to be introduced into the pipe assembly through an air inlet pipe. The gas carries impurities into contact with the filter head, through which the gas passes. The filter head blocks the impurities on the upper side, and the filtered gas is discharged into the power generation unit through an air outlet pipe. Because the filter head is conical, the impurities blocked by the filter head move towards the outer ring side of the filter head under the blowing of the airflow, causing the impurities to move into the storage structure for storage, so that the filter head can filter impurities in the gas for a long time.

[0029] 2. This invention, through the arrangement of components such as a ring plate, a rotating ring, through holes, transfer holes, and bending holes, allows airflow to pass through the filter head, pushing a spiral plate to rotate a shaft. During this rotation, the shaft drives a bevel gear to mesh with a bevel gear ring via a shaft sleeve, causing a reciprocating screw to rotate relative to a deflector plate. The deflector plate, through its meshing with the rotating reciprocating screw, slides back and forth within a sleeve plate. When the deflector plate moves to the outermost edge of the sleeve plate, it can move a stop block, causing the rotating ring to rotate once. As the rotating ring rotates, it continuously changes the transfer hole connected to the through holes and transfer holes. Impurities sliding down from the filter head continuously move through the through holes on the conversion end face to the connected transfer holes. Then, the transfer holes containing impurities connect with the bending holes during the rotation of the rotating ring, allowing the impurities in the transfer holes to fall into the collection cylinder through the connected bending holes. Thus, as the rotating ring continuously rotates, the impurities filtered by the filter head are moved into the collection cylinder, enabling the filter head to continuously filter gas.

[0030] 3. This invention, by setting up components such as an air ring, a one-way vacuum pump, and a reflux extraction pipe, causes the transfer hole to sequentially connect with the through hole, the reflux extraction pipe, and the bend hole during the rotation of the rotating ring. After the transfer hole and the through hole are misaligned, the transfer hole containing impurities first connects with the reflux extraction pipe, allowing the one-way vacuum pump to extract air from the transfer hole containing impurities through the reflux extraction pipe. This draws the residual gas between the impurities in the transfer hole back into the air inlet pipe, preventing residual gas inside from leaking into the collection cylinder through the bend hole when the transfer hole connects with the bend hole.

[0031] 4. This invention, by setting up components such as a force plate, a soft rope, and a striking ball, allows the striking ball to rotate via the soft rope as the shaft rotates. This causes the striking ball to move away from the shaft under centrifugal force. As the striking ball rotates with the shaft, it collides with and strikes the force plate, causing the filter head to vibrate. This causes impurities on the upper side of the filter head to tend to fall downwards, preventing impurities from adhering to the upper side of the filter head and increasing the gas flow of the filter head. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the internal structure of the pipe assembly in an embodiment of the present invention;

[0034] Figure 3This is a schematic diagram of the distribution of bending holes and transmission holes in an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the connection between the collecting cylinder and the movable collar in an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the connection between the filter head and the force-bearing plate in an embodiment of the present invention;

[0037] Figure 6 This is a front view schematic diagram of some structures in an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the connection between the sleeve plate and the dial plate in an embodiment of the present invention;

[0039] Figure 8 This is an embodiment of the present invention. Figure 7 Enlarged schematic diagram of the structure at point A in the middle.

[0040] Reference numerals: 1. Inlet pipe; 2. Outlet pipe; 3. Filter head; 31. Force plate; 32. Striking ball; 33. Soft rope; 4. Pipe assembly; 5. Storage structure; 51. Ring plate; 52. Rotating ring; 53. Collection structure; 531. Collection cylinder; 532. Variable diameter pipe; 533. Movable collar; 534. Bending hole; 54. Through hole; 55. Transmission hole; 56. Shaft; 57. Spiral plate; 58. Transmission structure; 581. End cap; 582. Shaft cylinder; 583. Connecting structure; 5831. Air guide cylinder; 5832. Vertical rod; 584. Sleeve plate; 585. Pulley plate; 586. Stop block; 587. Reciprocating screw; 588. Triangular block; 589. Bevel gear; 5810. Bevel gear ring; 6. Gas ring; 7. One-way vacuum pump; 8. Return suction pipe. Detailed Implementation

[0041] The following is in conjunction with the appendix Figures 1-8 The present invention will be described in further detail below.

[0042] This invention discloses a gas extraction and treatment device for gas power generation. For example... Figures 1-8 As shown, it includes an inlet pipe 1 and an outlet pipe 2. The inlet pipe 1 is located above the outlet pipe 2. The inlet pipe 1 and the outlet pipe 2 are connected by a pipe assembly 4. A filter head 3 is coaxially installed inside the pipe assembly 4. The surface of the filter head 3 has pores that allow gas to pass through. At the same time, the filter head 3 can block impurities carried in the gas. The filter head 3 is designed to be permeable. The upper end of the filter head 3 is conical. There is a gap between the outer ring surface of the filter head 3 and the inner wall of the pipe assembly 4. The conical design of the filter head 3 prevents impurities from accumulating on the upper side of the filter head 3. The impurities blocked by the filter head 3 move to the outer ring side of the filter head 3 by sliding on the conical surface of the filter head 3.

[0043] A shaft 56 is rotatably inserted at the axis of the filter head 3. Multiple evenly distributed spiral plates 57 are installed at one end of the shaft 56 on the lower side of the filter head 3. The spiral plates 57 are located inside the air outlet pipe 2. The lower end of the shaft 56 is rotatably connected to the inner wall of the air outlet pipe 2. Gas flow from the filter head 3 impacts the spiral plates 57, causing the shaft 56 to rotate.

[0044] Multiple multi-layered force plates 31 are fixed on the conical inner ring surface of the filter head 3. The multiple force plates 31 in each layer are evenly distributed around the axis of the filter head 3. A striking ball 32 is set at each force plate 31 inside the filter head 3. The striking ball 32 is connected to the circumferential side of the shaft 56 by a soft rope 33. When the shaft 56 rotates, it drives the striking ball 32 to rotate through the soft rope 33. During the rotation of the striking ball 32, it is in a suspended rotation state due to centrifugal force. The striking ball 32 strikes the force plate 31 while suspended and rotating with the shaft 56, causing the filter head 3 to vibrate. During the vibration of the filter head 3, the impurities on the upper side are moved to the outer ring side of the filter head 3.

[0045] A storage structure 5 for collecting impurities is installed between the lower end of the filter head 3 and the inner wall of the tube assembly 4. Impurities blocked on the upper side of the filter head 3 tend to move into the storage structure 5.

[0046] The storage structure 5 is positioned in contact with the upper end of the outlet pipe 2.

[0047] The storage structure 5 includes a ring plate 51 and a rotating ring 52. The rotating ring 52 is coaxially contacted on the lower side of the ring plate 51. The ring plate 51 is installed between the filter head 3 and the tube group 4. The bottom surface of the rotating ring 52 is in contact with the upper surface of the air outlet pipe 2.

[0048] The shaft 56 is located on the lower part of the filter head 3 and is equipped with a transmission structure 58 that drives the rotating ring 52 to rotate.

[0049] A collection structure 53 is installed on the outside of the rotating ring 52, and the upper end of the collection structure 53 is connected to the lower end of the pipe group 4.

[0050] The end face of the ring plate 51 is provided with multiple evenly distributed through holes 54. Impurities moving down from the top of the filter head 3 gradually fall into the through holes 54 under gravity. The upper end face of the rotating ring 52 is provided with multiple evenly distributed transfer holes 55. Then, impurities fall into the transfer holes 55 that are connected to the through holes 54.

[0051] The distance between the transfer hole 55 and the axis of the rotating ring 52 is equal to the distance between the through hole 54 and the axis of the rotating ring 52. The lower end of the transfer hole 55 is connected to the collection structure 53. Impurities falling into the transfer hole 55 can fall into the collection structure 53 as the rotating ring 52 rotates, so that impurities will not accumulate on the outer ring side of the filter head 3, and the filter head 3 can continuously filter impurities in the gas.

[0052] The collection structure 53 includes a collection cylinder 531 and a reducing pipe 532. The upper end of the reducing pipe 532 is smaller than the lower end of the reducing pipe 532. The upper end of the reducing pipe 532 is fixedly sleeved on the upper end of the air outlet pipe 2. The rotating ring 52 is rotatably inserted into the inner ring surface of the upper end of the reducing pipe 532. The upper end of the reducing pipe 532 is connected to the lower end of the pipe group 4.

[0053] The collecting cylinder 531 is connected to the lower end of the reducing pipe 532. A movable collar 533 is slidably sleeved on the outer surface of the lower end of the reducing pipe 532. The lower end of the movable collar 533 contacts the inner bottom wall of the collecting cylinder 531. The movable collar 533 is fixed to the outer surface of the air outlet pipe 2.

[0054] The reducing tube 532 has multiple evenly distributed, vertically penetrating bends 534 on its end face. The lower end of the bends 534 is connected to the inside of the collecting cylinder 531. The distance between the upper axis of the bends 534 and the axis of the rotating ring 52 is equal to the distance between the through hole 54 and the axis of the rotating ring 52. Impurities in the transfer hole 55 fall into the collecting cylinder 531 through the bends 534. Pushing the movable collar 533 upward can open the collecting cylinder 531 and remove the impurities inside the collecting cylinder 531.

[0055] The number of bent holes 534 is equal to the number of through holes 54, and the number of bent holes 534 is equal to one-third of the number of transfer holes 55. The through holes 54 and the adjacent transfer holes 55 are staggered.

[0056] An air ring 6 is coaxially arranged on the outside of the air inlet pipe 1. A one-way vacuum pump 7 is connected to the air ring 6. The one-way vacuum pump 7 is equipped with a one-way valve. The one-way vacuum pump 7 allows the airflow to flow unidirectionally into the air inlet pipe 1. The other end of the one-way vacuum pump 7 penetrates the outer surface of the pipe assembly 4. A return air extraction pipe 8 is inserted through the upper surface of the ring plate 51 and between each two adjacent through holes 54. The upper end of the return air extraction pipe 8 penetrates the inner wall of the air inlet pipe 1 and is connected to the air ring 6.

[0057] The distance between the axis of the end of the return suction pipe 8 connected to the ring plate 51 and the axis of the rotating ring 52 is equal to the distance between the axis of the through hole 54 and the axis of the ring plate 51. The number of return suction pipes 8 is equal to one-third of the number of transfer holes 55. The transfer holes 55 are located between the through hole 54 and the upper end of the bend hole 534. As the rotating ring 52 rotates, the transfer holes 55 are connected to the through hole 54, the return suction pipe 8 and the bend hole 534 in sequence. Impurities on the upper side of the filter head 3 fall into the transfer holes 55 connected to it through the through hole 54. Then, as the transfer holes 55 follow the rotation of the rotating ring 52, they first flow with the return suction pipe 8. The one-way vacuum pump 7 draws the gas in the impurities in the transfer holes 55 connected to it back into the inlet pipe 1 through the return suction pipe 8. The ring plate 51 continues to rotate, causing the transfer holes 55 after vacuuming to connect with the bend hole 534. This allows the impurities in the transfer holes 55 after vacuuming to fall into the collection cylinder 531 through the bend hole 534, preventing gas from leaking to the outside.

[0058] The upper end of the through hole 54 is set in an arc shape, and the upper ends of two adjacent through holes 54 are set in an arc-shaped depression that contacts each other. The transfer hole 55 is set at the same distance from the adjacent through hole 54 and the bending hole 534. The through hole 54 with the upper end set in an arc shape and depression prevents impurities from accumulating on the upper side of the ring plate 51, so that all impurities on the upper side of the ring plate 51 can fall into the through hole 54.

[0059] The transmission structure 58 includes an end cap 581 and a shaft sleeve 582. The shaft sleeve 582 is rotatably contacted on the lower side of the end cap 581. The end cap 581 is rotatably sleeved on the outer surface of the shaft 56. The end cap 581 is connected to the inner wall of the filter head 3 through a connecting structure 583. The connecting structure 583 includes an air guide cylinder 5831 and a vertical rod 5832. The upper end of the air guide cylinder 5831 is coaxially fixedly inserted into the lower end of the filter head 3, and the air guide cylinder 5831 is rotatably sleeved on the outer surface of the shaft 56. On the face, the two ends of the upright 5832 are fixed to the end cap 581 and the air guide cylinder 5831 respectively. The air guide cylinder 5831 is eccentrically set with the shaft 56. The lower end of the air guide cylinder 5831 is within the range of the spiral plate 57. The spiral plate 57 is spirally arranged. The gas passing through the filter head 3 passes through the air guide cylinder 5831. The airflow flowing out from the lower end of the air guide cylinder 5831 impacts the spiral plate 57, so that the airflow can stably pass through the impact spiral plate 57 to drive the shaft 56 to rotate.

[0060] The shaft sleeve 582 is fixedly sleeved on the outer surface of the shaft rod 56. A sleeve plate 584 is installed through the circumference of the shaft sleeve 582. The extension line of the sleeve plate 584 coincides with the axis of the shaft rod 56. A lever plate 585 is slidably inserted inside the sleeve plate 584. Multiple evenly distributed stops 586 are fixed on the inner ring surface of the rotating ring 52. The number of stops 586 is equal to the number of transmission holes 55. The stops 586 and the lever plate 585 are on the same plane.

[0061] A reciprocating screw 587 is threaded into one end of the lever 585 near the shaft 56. A sleeve 584 is rotatably sleeved on the outer surface of the reciprocating screw 587 near the shaft 56. A bevel gear 589 is coaxially fixed to one end of the reciprocating screw 587 inside the shaft sleeve 582. A bevel gear ring 5810 meshes with the upper side of the bevel gear 589. The bevel gear ring 5810 is coaxial with the shaft 56 and is mounted on the bottom surface of the end cover 581. During the rotation of the shaft 56, the shaft sleeve 582 rotates, which in turn drives the sleeve 584 and the lever 585 to rotate synchronously. The sleeve 584 rotates around the axis of the shaft 56. During rotation, the bevel gear 589 meshes with the bottom surface of the bevel gear ring 5810, causing the reciprocating screw 587 to rotate relative to the dial plate 585. The dial plate 585, through meshing with the rotating reciprocating screw 587, moves back and forth within the sleeve 584. When the dial plate 585 moves to the outermost position of the sleeve 584, it can push the stop block 586 as it rotates with the shaft 56, causing the ring plate 51 to rotate. After the ring plate 51 rotates to the angle between two adjacent through holes 54, the dial plate 585 moves into the shaft 56, which can cause the dial plate 585 to disengage from the stop block 586.

[0062] A triangular block 588 is disposed on the inner ring surface of the rotating ring 52. The triangular block 588 is located below the stop block 586, with its upper end pointed. The bottom surface of the triangular block 588 is elastically connected to the inner wall of the air outlet pipe 2. The triangular block 588 and the air outlet pipe 2 are elastically connected by an elastic telescopic rod, which has a tendency to push the triangular block 588 upward. The elastic connection between the triangular block 588 and the air outlet pipe 2 provides gravity support for the triangular block 588. When the lever plate 585 applies a pushing force to the stop block 586, it can push the rotating ring 52 to rotate. During the rotation of the rotating ring 52, through... The stop block 586 pushes the triangular block 588 to move downward elastically. The maximum width of the triangular block 588 is greater than the distance between two adjacent stop blocks 586. The tip of the triangular block 588 is located between two adjacent stop blocks 586. After the lever plate 585 disengages from the stop block 586, when the elastic connection between the triangular block 588 and the air outlet pipe 2 moves upward, it pushes the stop block 586 to limit the angle at which the rotating ring 52 stops. When the rotating ring 52 stops, different through holes 54, bending holes 534 and return air extraction pipe 8 are connected to the corresponding through holes 54.

[0063] The working principle is as follows: Gas extracted from underground is introduced into pipe group 4 through inlet pipe 1. When the gas, carrying impurities, comes into contact with filter head 3, the gas passes through filter head 3. Filter head 3 blocks the impurities on the upper side. After filtration, the gas is discharged into the power generation unit through outlet pipe 2. Since filter head 3 is conical, the impurities blocked by filter head 3 move to the outer ring side of filter head 3 under the blowing of airflow, so that the impurities are moved into the storage structure 5 for storage, so that the impurities do not accumulate on the upper side of filter head 3, and filter head 3 can filter the impurities in the gas for a long time.

[0064] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A gas extraction and treatment device for gas power generation, comprising an inlet pipe (1) and an outlet pipe (2), characterized in that: The air inlet pipe (1) is located above the air outlet pipe (2). The air inlet pipe (1) and the air outlet pipe (2) are connected by a pipe assembly (4). A filter head (3) is coaxially installed inside the pipe assembly (4). The filter head (3) is designed to be breathable. The upper end of the filter head (3) is conical. There is a gap between the outer ring surface of the filter head (3) and the inner wall of the pipe assembly (4). A storage structure (5) for collecting impurities is installed between the lower end of the filter head (3) and the inner wall of the pipe assembly (4). The storage structure (5) is arranged in contact with the upper end of the outlet pipe (2); The storage structure (5) includes a ring plate (51) and a rotating ring (52). The rotating ring (52) is coaxially contacted on the lower side of the ring plate (51). The ring plate (51) is installed between the filter head (3) and the tube group (4). The bottom surface of the rotating ring (52) is in contact with the upper surface of the air outlet pipe (2). A collection structure (53) is installed on the outside of the rotating ring (52), and the upper end of the collection structure (53) is connected to the lower end of the pipe group (4); The end face of the ring plate (51) is provided with a plurality of evenly distributed through holes (54), and the upper end face of the rotating ring (52) is provided with a plurality of evenly distributed transmission holes (55). The distance between the transfer hole (55) and the axis of the rotating ring (52) is equal to the distance between the through hole (54) and the axis of the rotating ring (52), and the lower end of the transfer hole (55) is connected to the collection structure (53); A shaft (56) is rotatably inserted at the axis of the filter head (3). Multiple evenly distributed spiral plates (57) are installed at one end of the shaft (56) on the lower side of the filter head (3). The spiral plates (57) are located inside the air outlet pipe (2). The lower end of the shaft (56) is rotatably connected to the inner wall of the air outlet pipe (2). The shaft (56) located on the lower side of the filter head (3) is equipped with a transmission structure (58) that drives the rotating ring (52) to rotate; The filter head (3) has multiple force plates (31) fixed on its conical inner ring surface. The multiple force plates (31) in each layer are evenly distributed around the axis of the filter head (3). Inside the filter head (3), there are striking balls (32) at each force plate (31). The striking balls (32) are connected to the circumferential side of the shaft (56) by a soft rope (33).

2. The gas extraction and treatment device for gas power generation according to claim 1, characterized in that: The collection structure (53) includes a collection cylinder (531) and a reducing pipe (532). The upper end of the reducing pipe (532) is smaller than the lower end of the reducing pipe (532). The upper end of the reducing pipe (532) is fixedly sleeved on the upper end of the air outlet pipe (2). The rotating ring (52) is rotatably inserted into the inner ring surface of the upper end of the reducing pipe (532). The upper end of the reducing pipe (532) is connected to the lower end of the pipe group (4). The collecting cylinder (531) is connected to the lower end of the reducing pipe (532). A movable collar (533) is slidably sleeved on the outer surface of the lower end of the reducing pipe (532). The lower end of the movable collar (533) is in contact with the inner bottom wall of the collecting cylinder (531). The movable collar (533) is fixed to the outer surface of the air outlet pipe (2). The end face of the variable diameter tube (532) is provided with a plurality of evenly distributed vertically penetrating bends (534). The lower end of the bend (534) is connected to the inside of the collecting cylinder (531). The distance between the upper axis of the bend (534) and the axis of the rotating ring (52) is equal to the distance between the through hole (54) and the axis of the rotating ring (52).

3. The gas extraction and treatment device for gas power generation according to claim 2, characterized in that: The number of the bent holes (534) is equal to the number of the through holes (54), and the number of the bent holes (534) is equal to one-third of the number of the transmission holes (55); The through hole (54) is offset from the adjacent transmission hole (55).

4. The gas extraction and treatment device for gas power generation according to claim 3, characterized in that: An air ring (6) is coaxially arranged on the outside of the air inlet pipe (1). A one-way vacuum pump (7) is connected to the air ring (6). The other end of the one-way vacuum pump (7) penetrates the outer surface of the pipe assembly (4). A return air extraction pipe (8) is inserted through the upper surface of the ring plate (51) and between each two adjacent through holes (54). The upper end of the return air extraction pipe (8) penetrates the inner wall of the air inlet pipe (1) and is connected to the air ring (6). The distance between the axis of the reflux extraction pipe (8) connected to the ring plate (51) and the axis of the rotating ring (52) is equal to the distance between the axis of the through hole (54) and the axis of the ring plate (51). The number of reflux extraction pipes (8) is equal to one-third of the number of transfer holes (55). The transfer holes (55) are located between the through hole (54) and the upper end of the bend hole (534).

5. A gas extraction and treatment device for gas power generation according to claim 4, characterized in that: The transmission structure (58) includes an end cap (581) and a shaft cylinder (582). The shaft cylinder (582) is rotatably contacted on the lower side of the end cap (581). The end cap (581) is rotatably sleeved on the outer surface of the shaft (56). The end cap (581) is connected to the inner wall of the filter head (3) through a connecting structure (583). The shaft sleeve (582) is fixedly sleeved on the outer surface of the shaft rod (56). A sleeve plate (584) is installed through the circumferential side of the shaft sleeve (582). The extension line of the sleeve plate (584) coincides with the axis of the shaft rod (56). A lever plate (585) is slidably inserted inside the sleeve plate (584). Multiple evenly distributed stop blocks (586) are fixed on the inner ring surface of the rotating ring (52). The number of stop blocks (586) is equal to the number of transmission holes (55). The stop blocks (586) and the lever plate (585) are on the same plane. The dial plate (585) is threaded with a reciprocating screw (587) at one end near the shaft (56). The sleeve plate (584) is rotatably sleeved on the outer surface of the reciprocating screw (587) at one end near the shaft (56). The reciprocating screw (587) is coaxially fixed with a bevel gear (589) at one end inside the shaft cylinder (582). A bevel gear ring (5810) meshes with the upper side of the bevel gear (589). The bevel gear ring (5810) is coaxial with the shaft (56) and is installed on the bottom surface of the end cover (581). A triangular block (588) is provided on the inner ring surface of the rotating ring (52). The triangular block (588) is located below the stop block (586). The upper end of the triangular block (588) is pointed. The bottom surface of the triangular block (588) is elastically connected to the inner wall of the air outlet pipe (2). The maximum width of the triangular block (588) is greater than the distance between two adjacent stop blocks (586). The tip of the triangular block (588) is located between two adjacent stop blocks (586).

6. A gas extraction and treatment device for gas power generation according to claim 5, characterized in that: The connection structure (583) includes an air guide cylinder (5831) and a vertical rod (5832). The upper end of the air guide cylinder (5831) is coaxially fixedly inserted into the lower end of the filter head (3). The air guide cylinder (5831) is rotatably sleeved on the outer surface of the shaft (56). The two ends of the vertical rod (5832) are fixed to the end cap (581) and the air guide cylinder (5831) respectively. The air guide cylinder (5831) and the shaft (56) are eccentrically set. The lower end of the air guide cylinder (5831) is within the range of the spiral plate (57).

7. A gas extraction and treatment device for gas power generation according to claim 5, characterized in that: The upper end of the through hole (54) is set in an arc, and the upper ends of two adjacent through holes (54) are set in an arc that contacts each other. The transmission hole (55) is set at the same distance from the adjacent through hole (54) and the bending hole (534).

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