Blockage clearing and dredging device for normal-pressure shale gas discharging and mining pipeline

Abstract

The invention belongs to the technical field of pipeline blockage clearing, and particularly relates to a normal-pressure shale gas discharge and recovery pipeline blockage clearing and dredging device which comprises a self-driving module, a driving wheel is arranged on the self-driving module, a spring is connected between the driving wheel and the self-driving module, and a bearing is connected to the middle of the surface of one side of the self-driving module in a penetrating mode. A supporting sleeve column is fixedly installed on the outer arc face of the bearing, and the inner side wall of the supporting sleeve column is sleeved with a connecting sleeve. A plurality of cutting tool bits distributed in an annular array in the cutting assembly are matched with crushing wheels through the integrated cutting assembly, the washing assembly and the dirt suction assembly, hard blockages can be rapidly crushed, the blocky blockages are ground into small-particle-size chippings, and the high-pressure water spraying device washes the inner wall of a pipeline through high-pressure water flow to effectively remove residual dirt. The sewage suction assembly synchronously sucks crushed residues and sewage, secondary blockage and multi-assembly collaborative operation are avoided, and compared with a traditional single blockage clearing mode, the blockage clearing time is greatly shortened, the shale gas discharging and mining operation efficiency is remarkably improved, and shutdown loss caused by pipeline blockage is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline clearing and unblocking, and in particular relates to a device for clearing and unblocking a normal pressure shale gas production pipeline. Background Art

[0002] During shale gas extraction, the produced fluid contains not only natural gas but also fracturing flowback fluid. This fracturing flowback fluid has a complex composition, including guar gum, preservatives, breakers, petroleum, and various other chemical additives. It exhibits "three highs" (high COD, high stability, and high viscosity), which easily forms dirt and sediment within the pipeline, adhering to the inner wall. Over time, this gradually reduces the flow cross-section of the pipeline, ultimately leading to blockage. Furthermore, shale gas often contains a large amount of rock particles, which also easily accumulate in the pipeline, causing blockage.

[0003] Shale gas production pipelines are usually long and have complex layouts, including straight sections and curved sections. At the curved parts of the pipelines, the flow state of the fluid changes and the flow velocity decreases, which makes it more likely to cause the deposition of solid particles and the adhesion of dirt, thereby causing blockage.

[0004] A Chinese invention patent publication number CN 116174414 A discloses a scale removal device for building HVAC pipes, which relates to the technical field of scale removal for HVAC pipes. The device comprises an end seat, the other end of which is fixedly connected to an internal fixed pipe, and the end of the internal fixed pipe away from the end seat is connected to a multi-stage telescopic removal component; the multi-stage telescopic removal component comprises multiple bellows and multiple brush-moving removal devices, the multiple bellows and the multiple brush-moving removal devices are arranged in an alternating manner, and the end of the multi-stage telescopic removal component away from the internal fixed pipe is connected to a scale pushing device; by arranging the scale removal device, the present invention can adopt a pneumatic drive form to extend the multiple scale removal devices of the device in the HVAC pipe, and make the bristles contact the inner wall of the HVAC pipe, thereby realizing long-distance and large-area scale removal; by arranging the scale pushing device, the scale in the HVAC pipe can be pushed out after the scale removal is completed, thereby avoiding the scale remaining in the HVAC pipe. The present invention improves the scale cleaning work in the HVAC pipe and is easy to use.

[0005] However, the above technology often has the following defects: it uses pneumatic drive to achieve long-distance and large-area scale removal and can push out the cleaned scale, but this technology is mainly aimed at HVAC pipe scale with a single component and relatively simple structure, and cannot adapt to the needs of crushing and cleaning complex component blockages in shale gas production pipelines. Moreover, there are significant differences between HVAC pipelines and shale gas production pipelines in terms of pipe diameter, pressure, and conveying medium. Its multi-stage telescopic removal components and scale pushing devices are difficult to operate stably under the complex working conditions of shale gas production pipelines, and cannot effectively solve the problem of shale gas production pipeline blockage.

[0006] To this end, the present invention provides a device for clearing and unblocking atmospheric pressure shale gas production pipelines. Summary of the Invention

[0007] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0008] The technical solution adopted by the present invention to solve its technical problem is: the atmospheric shale gas drainage pipeline clearing and unblocking device of the present invention includes a self-driving module, the self-driving module is provided with a driving wheel, a spring is connected between the driving wheel and the self-driving module, a bearing is connected through the middle of one side surface of the self-driving module, a support sleeve is fixedly installed on the outer arc surface of the bearing, a connecting sleeve is sleeved on the inner side wall of the support sleeve, a connecting shaft portion is provided on both sides of the outer arc surface of the connecting sleeve, a deployment arm is movably connected to one side surface of the connecting shaft portion through a rotating shaft, an outer protrusion is provided at one side edge of the lower surface of the deployment arm, a locking ring is fixedly installed on the outer protrusion of the lower surface of the deployment arm, one end of the connecting sleeve abuts against a cutting assembly, the cutting assembly includes a compass cover connected to the outer arc surface of the bearing, the outer arc surface of the compass cover is provided with a mounting groove, a cutting head is movably connected to the middle part of the inner side wall of the mounting groove through a rotating shaft, a chamfered surface is provided on one side surface of the cutting head, and a receiving portion is provided on the lower surface of the cutting head.

[0009] The outer arc surface of the receiving part is provided with a tooth block, the outer arc surface of the bearing is fixedly mounted with a gear, the outer arc surface serrations of the gear are meshed with the tooth block, and the inner arc surface of the lock ring is sleeved onto the top of the cutting head.

[0010] There are several cutting heads, which are evenly distributed on the compass cover in the form of a ring array. A crushing wheel is fixedly mounted on one side surface of the compass cover, and crushing teeth are provided on the outer arc surface of the crushing wheel.

[0011] A water storage pump is fixedly installed on the upper surface of the self-driving module. A fixing ring is provided on the outer arc surface of the water storage pump. The water storage pump is connected to the self-driving module through the fixing ring on the outer arc surface.

[0012] A water pipe is fixedly installed on one output end of the water storage pump, and a high-pressure nozzle is fixedly installed on one end of the water pipe. One side of the high-pressure nozzle is placed and fixed on the self-driving module, and the high-pressure nozzle and the cutting assembly are in the same plane.

[0013] A dirt suction assembly is fixedly mounted on one end of the bearing away from the cutting assembly. The dirt suction assembly includes a negative pressure extraction member fixedly mounted on the outer arc surface of the bearing. An exhaust fan is provided at the rear end of one side surface of the negative pressure extraction member.

[0014] A suction pipe is provided on the side of the negative pressure extraction component close to the exhaust fan, and a connecting pipe is connected through the inner arc surface of the extraction pipe. A sewage suction nozzle is fixedly installed on one side of the extraction pipe through one end of the connecting pipe.

[0015] An inner sleeve is provided on the top of one side surface of the sewage suction nozzle, an inner arc surface of the inner sleeve is provided with an inclined end, the middle part of the inclined end is connected by a rotating shaft, and an aperture part is provided near the inner sleeve of the sewage suction nozzle.

[0016] The inner arc surface of the aperture part abuts against the inclined end. There are several inclined ends, which are evenly distributed on the sewage suction nozzle in the form of a ring array. The sewage suction nozzle and the driving wheel are on the same horizontal plane.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. Through the integration of cutting, flushing and sewage suction components, in the cutting component, multiple cutting heads distributed in a circular array cooperate with the crushing wheel to quickly break up hard blockages and grind block blockages into small-sized debris. The high-pressure water spray device flushes the inner wall of the pipeline with high-pressure water flow to effectively remove residual dirt. The sewage suction component simultaneously sucks in the broken residues and sewage to avoid secondary blockage. Compared with the traditional single clearing method, the coordinated operation of multiple components greatly shortens the clearing time, significantly improves the efficiency of shale gas drainage operations, and reduces the downtime losses caused by pipeline blockage.

[0019] 2. The driving wheel of the drive module cooperates with the spring to enable the device to perform elastic adjustment according to changes in the pipeline diameter. The elastic deformation of the spring can adapt to normal-pressure shale gas production pipelines of different specifications. Whether it is a branch pipeline with a smaller diameter or a main pipeline with a larger diameter, the driving wheel can fit tightly to the inner wall to ensure the stable movement of the device. This effectively solves the problem of traditional clearing equipment relying on specific pipe diameters and expands the application scenarios and scope of the device.

[0020] 3. Before the cutting assembly works, the connecting sleeve provides additional support for the cutting head through the unfolding arm and the locking ring, thereby enhancing stability during the cutting process, preventing the cutter head from shifting or falling off due to uneven force, and reducing the risk of equipment failure. At the same time, the suction nozzle of the sewage suction assembly adopts an adaptive caliber design, which can automatically adjust according to the state of the sucked material to avoid excessive internal pressure due to blockage, ensuring the stable operation of the device during the clearing process, reducing safety hazards, and providing protection for the safety of operators and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a three-dimensional diagram of the overall pipeline clearing method of the present invention;

[0023] Figure 2It is a schematic diagram of the overall structure of the connecting sleeve and the cutting assembly of the present invention;

[0024] Figure 3 It is a schematic diagram of the disassembled structure of the cutting assembly in the present invention;

[0025] Figure 4 It is a structural diagram of the self-driving module in the present invention;

[0026] Figure 5 It is a structural diagram of the water storage pump connection in the present invention;

[0027] Figure 6 It is a structural schematic diagram of the sewage suction component in the present invention;

[0028] Figure 7 It is a structural schematic diagram of the sewage suction nozzle in the present invention.

[0029] In the figure: 1, self-driving module; 11, driving wheel; 12, spring; 2, bearing; 3, support sleeve; 4, connecting sleeve; 41, shaft connection; 42, deployment arm; 43, locking ring;

[0030] 5. Cutting assembly; 51. Compass cover; 52. Mounting slot; 53. Cutting head; 531. Attachment; 532. Tooth block; 54. Gear; 55. Crushing wheel; 551. Crushing tooth;

[0031] 6. Water storage pump; 7. Fixing ring; 8. Water pipe; 9. High-pressure nozzle;

[0032] 10. Sewage suction assembly; 101. Negative pressure extraction component; 102. Exhaust fan; 103. Extraction pipeline; 104. Sewage suction nozzle; 105. Inner kit; 106. Inclined end; 107. Diameter part. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, the embodiment of the present invention includes a self-driving module 1, which is provided with a driving wheel 11, a spring 12 is connected between the driving wheel 11 and the self-driving module 1, a bearing 2 is connected through the middle of one side surface of the self-driving module 1, a support sleeve 3 is fixedly installed on the outer arc surface of the bearing 2, and a connecting sleeve 4 is sleeved on the inner side wall of the support sleeve 3, and a connecting sleeve 4 is provided on both sides of the outer arc surface of the connecting sleeve 4. A coupling portion 41 is provided on one side surface of the connecting portion 41 and a deployment arm 42 is movably connected to the deployment arm 42 through a rotating shaft. An outer protrusion is provided at an edge of one side of the lower surface of the deployment arm 42, and a locking ring 43 is fixedly installed on the outer protrusion of the lower surface of the deployment arm 42. One end of the connecting sleeve 4 is abutted against a cutting assembly 5, and the cutting assembly 5 includes a compass cover 51 connected to the outer arc surface of the bearing 2, and an installation groove 52 is opened on the outer arc surface of the compass cover 51. A cutting head 53 is movably connected to the middle part of the inner side wall of the installation groove 52 through a rotating shaft. A side surface of the cutting head 53 is provided with a chamfered surface, and a receiving portion 531 is provided on the lower surface of the cutting head 53.

[0035] At the shale gas mining site, technicians put on protective equipment and place the self-driving module 1 steadily at the entrance of the normal-pressure shale gas production pipeline. Faced with pipelines of different diameters, technicians manually adjust the distance between the driving wheel 11 and the spring 12. The spring 12 is compressed or stretched under force, and with its own elastic deformation characteristics, it pushes the driving wheel 11 to fit tightly against the inner wall of the pipeline. The elastic expansion and contraction range of the spring 12 ensures that the driving wheel 11 can provide stable grip under different pipe diameters. At the same time, the technicians check the internal water volume through the liquid level observation window on the water storage pump 6. If the water level is lower than the preset warning line, clean water is added in time to ensure that the water pressure is stable during high-pressure water spraying operations to meet the flushing needs during the clearing process.

[0036] When the start button of the device is pressed, the drive motor in the self-driving module 1 starts to run, driving the drive wheel 11 to rotate synchronously. Under the elastic buffering action of the spring 12, the drive wheel 11 maintains moderate pressure with the inner wall of the pipe and continues to roll along the inner wall of the pipe. During the pipeline clearing operation, if a slight blockage is encountered, the travel speed of the self-driving module 1 is controlled to the medium speed gear to ensure that the cutting component 5 has sufficient time to break the blockage. If the blockage is serious, the speed is reduced to make the device move slowly in the blocked area to enhance the clearing effect.

[0037] like Figure 2 and Figure 5 As shown, the outer arc surface of the receiving portion 531 is provided with a tooth block 532, the outer arc surface of the bearing 2 is fixedly mounted with a gear 54, the outer arc surface serrations of the gear 54 are meshed with the tooth block 532, the inner arc surface of the locking ring 43 is sleeved onto the top of the cutting head 53, and the number of cutting heads 53 is several, and they are evenly distributed on the compass cover 51 in the form of a circular array, and a crushing wheel 55 is fixedly mounted on one side surface of the compass cover 51, and the outer arc surface of the crushing wheel 55 is provided with crushing teeth 551.

[0038] When the self-driving module 1 carries the device to the blockage position, the resistance in the pipeline increases, triggering the built-in pressure sensor of the device. The sensor transmits the signal to the control system, and the control system immediately drives the bearing 2 to start rotating. While the bearing 2 rotates, it drives the gear 54 fixed on its outer arc surface to rotate synchronously. Since the gear 54 is engaged with the tooth block 532 of the receiving part 531 of the cutting head 53, the circular motion of the gear 54 is converted into the swing of the cutting head 53 around the rotating axis of the mounting groove 52. The cutting heads 53 evenly distributed in a circular array on the compass cover 51 repeatedly cut the hard blockages with their sharp beveled surfaces. At the same time, the crushing wheel 55 on one side of the compass cover 51, with its outer arc surface densely covered with crushing teeth 551, rotates at high speed, grinds the cut blockage for the second time, and breaks the block block into smaller debris for easy subsequent cleaning.

[0039] Before the cutting operation officially begins, the connecting sleeve 4 slowly expands the expansion arm 42 to a suitable angle through the connecting shaft 41 and the rotating shaft of the expansion arm 42 under the push of the hydraulic push rod, so that the locking ring 43 is accurately connected to the top of the cutting head 53. The locking ring 43 fits tightly with the groove on the top of the cutting head 53, providing additional lateral support for the cutting head 53, enhancing the stability during the cutting process, and effectively preventing the cutting head 53 from deviating or shaking during strong cutting.

[0040] like Figure 5 As shown, a water pump 6 is fixedly installed on the upper surface of the self-driving module 1, and a fixing ring 7 is provided on the outer arc surface of the water pump 6. The water pump 6 is connected to the self-driving module 1 through the fixing ring 7 on the outer arc surface. A water pipe 8 is fixedly installed on the output end of one side of the water pump 6, and a high-pressure nozzle 9 is fixedly installed on one end of the water pipe 8. One side of the high-pressure nozzle 9 is placed and fixed on the self-driving module 1, and the high-pressure nozzle 9 and the cutting assembly 5 are in the same plane.

[0041] The water storage pump 6 on the self-driving module 1 is started under the instruction of the control system, and the impeller inside it rotates at high speed, and the stored water is transported to the high-pressure nozzle 9 through the water pipe 8. The high-pressure nozzle 9 and the cutting component 5 are on the same horizontal circumferential surface. When the high-pressure water flow is ejected from the nozzle, a fan-shaped water curtain is formed, which performs all-round flushing on the inner wall of the pipe after being broken by the cutting component 5. At the same time, according to the residual dirt on the inner wall of the pipe, the water pressure is adjusted in real time through the pressure of the water storage pump 6. For stubborn dirt, the water pressure is increased, and the impact force of the high-pressure water flow is used to thoroughly flush out the remaining dirt and broken blockages.

[0042] like Figure 6 and Figure 7As shown, a sewage suction component 10 is fixedly installed at one end of the bearing 2 away from the cutting component 5. The sewage suction component 10 includes a negative pressure extraction member 101 fixedly installed on the outer arc surface of the bearing 2. An exhaust fan 102 is provided on the rear end of one side surface of the negative pressure extraction member 101. A suction pipe 103 is provided on the side of the negative pressure extraction member 101 close to the exhaust fan 102. A connecting pipe is connected to the inner arc surface of the extraction pipe 103. A sewage suction nozzle is fixedly installed on one side of the extraction pipe 103 through one end of the connecting pipe. 104, an inner sleeve 105 is provided on the top of one side surface of the suction nozzle 104, and an inner arc surface of the inner sleeve 105 is provided with an inclined end 106, and the middle part of the inclined end 106 is connected by a rotating shaft, and the suction nozzle 104 is provided with a diameter portion 107 near the inner sleeve 105, and the inner arc surface of the diameter portion 107 is in contact with the inclined end 106. There are several inclined ends 106, which are evenly distributed on the suction nozzle 104 in the form of a ring array, and the suction nozzle 104 and the driving wheel 11 are on the same horizontal plane.

[0043] While the cutting assembly 5 and the high-pressure water spraying device are working together, the rotation of the bearing 2 drives the sewage suction assembly 10 to operate through the transmission belt. The exhaust fan 102 on the negative pressure extraction member 101 rotates at high speed under the drive of the motor, generating a strong negative pressure suction force, forming a vacuum environment in the extraction pipeline 103. The blockage residue and sewage after cutting, crushing and high-pressure water flushing are sucked into the device through the sewage suction nozzle 104 under the action of negative pressure. The inner sleeve 105 and the inclined end 106 on the sewage suction nozzle 104 act as a guide groove to effectively guide and gather sewage To prevent blockage and residue, the aperture 107 and the inclined end 106 are made of flexible rubber material and can be adaptively deformed and adjusted according to the flow and state of the inhaled material. When the flow of the inhaled material is large, the aperture 107 expands to increase the suction area and ensure efficient sewage suction. When the inhaled material is relatively thick, the aperture 107 contracts to enhance the suction force and prevent blockage. Since the sewage suction nozzle 104 and the driving wheel 11 are on the same horizontal plane, during the movement of the device, the sewage suction component 10 can clean up the residual materials deposited at the bottom of the pipe in time to avoid secondary blockage.

[0044] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0046] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. The device for clearing and unblocking atmospheric shale gas production pipelines is characterized by: The invention comprises a self-driving module (1), wherein a driving wheel (11) is provided on the self-driving module (1), a spring (12) is connected between the driving wheel (11) and the self-driving module (1), a bearing (2) is connected through the middle of one side surface of the self-driving module (1), a support sleeve (3) is fixedly installed on the outer arc surface of the bearing (2), a connecting sleeve (4) is sleeved on the inner side wall of the supporting sleeve (3), a connecting shaft (4) is provided on both sides of the outer arc surface of the connecting sleeve (4), a side surface of the connecting shaft (41) is movably connected to an expansion arm (42) through a rotating shaft, an outer protrusion is provided at one side edge of the lower surface of the expansion arm (42), a locking ring (43) is fixedly installed on the outer protrusion of the lower surface of the expansion arm (42), and one end of the connecting sleeve (4) is in contact with a cutting assembly (5); The cutting assembly (5) comprises a compass cover (51) connected to the outer arc surface of the bearing (2); the outer arc surface of the compass cover (51) is provided with a mounting groove (52); a cutting head (53) is movably connected to the middle portion of the inner side wall of the mounting groove (52) via a rotating shaft; a side surface of the cutting head (53) is provided with a beveled surface; and a lower surface of the cutting head (53) is provided with a receiving portion (531).

2. The device for clearing and unblocking atmospheric shale gas production pipelines according to claim 1 is characterized in that: The outer arc surface of the receiving portion (531) is provided with a tooth block (532), the outer arc surface of the bearing (2) is fixedly mounted with a gear (54), the outer arc surface serrations of the gear (54) are meshed with the tooth block (532), and the inner arc surface of the locking ring (43) is sleeved onto the top of the cutting head (53).

3. The device for clearing and unblocking atmospheric shale gas production pipeline according to claim 2, characterized in that: The number of the cutting blades (53) is several and they are evenly distributed on the compass cover (51) in the form of a ring array. A crushing wheel (55) is fixedly mounted on one side surface of the compass cover (51), and the outer arc surface of the crushing wheel (55) is provided with crushing teeth (551).

4. The device for clearing and unblocking atmospheric shale gas production pipeline according to claim 1, characterized in that: A water storage pump (6) is fixedly mounted on the upper surface of the self-driving module (1); a fixing ring (7) is provided on the outer arc surface of the water storage pump (6); and the water storage pump (6) is connected to the self-driving module (1) via the fixing ring (7) on the outer arc surface.

5. The device for clearing and unblocking atmospheric shale gas production pipeline according to claim 4 is characterized in that: A water pipe (8) is fixedly mounted on one output end of the water storage pump (6), a high-pressure nozzle (9) is fixedly mounted on one end of the water pipe (8), one side of the high-pressure nozzle (9) is fixed on the self-driving module (1), and the high-pressure nozzle (9) and the cutting assembly (5) are in the same plane.

6. The device for clearing and unblocking atmospheric shale gas production pipeline according to claim 2, characterized in that: A dirt suction assembly (10) is fixedly mounted on one end of the bearing (2) away from the cutting assembly (5); The dirt suction assembly (10) comprises a negative pressure extraction member (101) fixedly mounted on the outer arc surface of the bearing (2), and an extraction fan (102) is provided at the rear end of one side surface of the negative pressure extraction member (101).

7. The device for clearing and unblocking atmospheric shale gas production pipelines according to claim 6, characterized in that: A suction pipe (103) is provided on one side of the negative pressure extraction member (101) close to the exhaust fan (102); a connecting pipe is connected through the inner arc surface of the extraction pipe (103); and a sewage suction nozzle (104) is fixedly installed on one side of the extraction pipe (103) through one end of the connecting pipe.

8. The device for clearing and unblocking atmospheric shale gas production pipelines according to claim 7, characterized in that: An inner sleeve (105) is provided on the top of one side surface of the sewage suction nozzle (104); an inner arc surface of the inner sleeve (105) is provided with an inclined end (106); the middle of the inclined end (106) is connected by a rotating shaft; and an opening portion (107) is provided near the inner sleeve (105) of the sewage suction nozzle (104).

9. The device for clearing and unblocking atmospheric shale gas production pipeline according to claim 8, characterized in that: The inner arc surface of the aperture portion (107) abuts against the inclined end (106), and the inclined ends (106) are multiple in number and evenly distributed on the sewage suction nozzle (104) in the form of a ring array. The sewage suction nozzle (104) and the driving wheel (11) are on the same horizontal plane.

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