Cleaning device for dredging flexible shaft of oil and gas pipeline

Abstract

The invention discloses an oil and gas pipeline dredging flexible shaft cleaning device, which relates to the technical field of pipeline dredging, and comprises a spray head main body, a connector, an end cover and a guide piece, and the guide piece is connected to the spray head main body and is glidingly embedded with a guide groove on a rotating part of the connector. The connector is rotationally sleeved with the spray head body, so that the connector enables water flow to enter the water flow channel through the water outlet through the water outlet channel, the water flow is sprayed out from the multiple nozzles obliquely arranged in the circumferential direction, and the spray head body rotates on the connector; by means of a guide groove which is formed in the rotating part of the connector and is of an annular wave structure and a guide piece which is connected to the spray head body and embedded into the guide groove, the spray head body can do reciprocating motion in the axial direction of the connector in the rotating process, so that scales and deposits located on the inner wall of the oil and gas pipeline are rotationally impacted; the dredging efficiency of the oil-gas pipeline is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of pipeline dredging technology, specifically to a flexible shaft cleaning device for oil and gas pipeline dredging. Background Technology

[0002] As pipelines for transporting oil and gas, oil and gas pipelines accumulate scale, including inorganic matter and organic matter, primarily petroleum and asphalt. The large amounts of oilfield scale found in these pipelines can be broadly categorized into salt scale, corrosion scale, and silt deposit scale. When different production layers are transported together, incompatible liquid phases mix, and some ions combine to form substances that are insoluble, slightly soluble, or sparingly soluble in water. These substances deposit in the pipeline, forming salt scale, such as carbonate scale and sulfate scale. Simultaneously, corrosion products and silt from within the metal pipeline deposit, collectively forming mixed scale. If this continues to form, it can eventually block the pipeline, even completely sealing it off, leading to pipeline abandonment.

[0003] Currently, physical unclogging of oil and gas pipelines mainly involves inserting a flexible shaft high-pressure nozzle into the pipeline and relying on the high-pressure jet to flush away the scale on the inner wall of the pipeline to unclog it. For example, CN221602732U discloses a pipeline unclogging nozzle and a pipeline unclogging trolley using the same, including a nozzle body. The nozzle body includes a head section and a tail section connected sequentially from front to back. Both the head section and the tail section are cylindrical and coaxial. The head section also has a cavity that extends towards and out of the tail section. The side wall of the cavity also has multiple first water outlet holes that penetrate the side wall of the cavity. The axis of the first water outlet hole intersects the axis of the head section with an angle of less than 90°, and the first water outlet holes are evenly arranged around the axis of the nozzle body. The top of the cavity also has a second water outlet hole whose axis coincides with the axis of the head section and extends forward out of the top of the head section.

[0004] The aforementioned nozzles used for pipe dredging mainly rely on setting multiple water outlets to form water jets in different directions to clean the inner wall of the pipe. However, the nozzles cannot rotate and reciprocate to impact the inner wall of the pipe during the water jet spraying process, making their dredging function relatively simple. Therefore, this application proposes a rotary reciprocating impact flexible shaft cleaning device for oil and gas pipeline dredging. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the above-mentioned technologies by proposing a flexible shaft cleaning device for unblocking oil and gas pipelines. This device aims to solve the problem that the nozzles cannot rotate and reciprocate against the inner wall of the pipeline during water jet spraying, resulting in a limited unblocking function.

[0006] This invention provides a flexible shaft cleaning device for unblocking oil and gas pipelines, comprising: The nozzle body has a tip, a water flow channel, and multiple nozzles connected to the water flow channel; The connector has a water outlet channel and a water outlet connected to the water outlet channel. The water outlet channel is connected to the pressurization equipment through a hose. The nozzle body is rotated and sleeved on the connector so that the water outlet channel is connected to the water flow channel through the water outlet. The end cap restricts the rotation of the connector within the nozzle body; The guide component is connected to the nozzle body and slides into the guide groove on the rotating part of the connector, so that the water entering the water flow channel through the water outlet channel is sprayed out through the nozzle to drive the nozzle body to rotate on the connector, so that the guide groove slides on the guide component, thereby making the nozzle body perform axial reciprocating linear motion on the connector.

[0007] Preferably, the guide groove has an annular wave structure, and a guide ball is provided at the end of the guide member, with the guide ball located inside the guide groove. Multiple nozzles are evenly distributed circumferentially on the nozzle body and are inclined downwards and to one side. The rotating part has multiple connecting holes along the axial direction, which connect the upper and lower spaces of the water flow channel.

[0008] Preferably, the tip is a conical structure with drill teeth and a spray hole communicating with the water flow channel.

[0009] Preferably, the oil and gas pipeline unblocking flexible shaft cleaning device also includes a cone head, which is connected to a tip to close the spray hole. A connecting rod is provided at the end of the cone head, and the connecting rod is threaded or plugged into the spray hole; the cone head has multiple mounting holes, and the tip has multiple connecting holes, with the cone head threadedly connected to the connecting holes via connecting bolts passing through the mounting holes.

[0010] Preferably, the guide is provided with external threads, and the nozzle body is provided with threaded through holes, and the guide is connected to the threaded through holes through the external threads.

[0011] A locking hole is provided axially inside the nozzle body, and a second mounting hole for installing an end cap is provided at the end of the nozzle body. One end of the locking hole is perpendicularly connected to the threaded through hole, and the other end of the locking hole is connected to the second mounting hole. An elastic locking rod is slidably provided inside the locking hole, and a slot is provided on the guide. By screwing in the mounting bolt in the second mounting hole, the elastic locking rod is pushed to press the spring, so as to move and engage with the slot on the guide located in the threaded through hole.

[0012] Preferably, the oil and gas pipeline unblocking flexible shaft cleaning device also includes an annular impeller, which is located inside the nozzle body; the water outlet is inclined on the connector so that the water coming out of the water outlet is jetted onto the blade of the annular impeller.

[0013] Preferably, an annular sealing ring is provided at the connection between the end cap and the nozzle body.

[0014] Compared with existing technologies, it has the following beneficial effects: This invention involves rotating the nozzle body onto the connector head, allowing water to flow through the outlet into the water channel and exit from multiple circumferentially inclined nozzles. This causes the nozzle body to rotate on the connector head. Furthermore, a guide groove with an annular wave structure on the rotating part of the connector head, and a guide member connected to the nozzle body and fitted into the guide groove, enable the nozzle body to reciprocate along the axial direction of the connector head during rotation. This reciprocating motion impacts scale and deposits on the inner wall of oil and gas pipelines, effectively improving the unblocking efficiency of oil and gas pipelines. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the internal structure of the nozzle body of the present invention; Figure 2 This is a schematic diagram of the internal structure of the connector of the present invention; Figure 3 This is a side view of the nozzle body of the present invention; Figure 4 This is a schematic diagram of the structure of the nozzle body of the present invention; Figure 5 This is a schematic diagram of the connector structure of the present invention; Figure 6 This is a schematic diagram of the cone head of the present invention mounted on the nozzle body; Figure 7 This is a schematic diagram of the locking rod of the present invention installed on the nozzle body; Figure 8 This is a schematic diagram showing the connection between the lock hole and the mounting hole of the present invention; Figure 9 This is a schematic diagram of the nozzle body with a lock hole according to the present invention; Figure 10 A schematic diagram of the nozzle body of the present invention, which is provided with a cone head and a locking rod; Figure 11 This is a schematic diagram showing the connection between the guide member and the locking rod of the present invention; Figure 12 A schematic diagram of the main body of the nozzle, which is equipped with a cone head and a locking rod; Figure 13 for Figure 12 Enlarged view of point A in the middle; Figure 14 for Figure 12 Enlarged view of point B in the middle; Figure 15This is a schematic diagram of the annular impeller of the present invention disposed inside the nozzle body; Figure 16 This is a schematic diagram of the high-pressure jet operation of the nozzle body of the present invention; Figure 17 This is a before-and-after comparison diagram of the cleaning of oil and gas pipelines.

[0017] In the diagram, 1-nozzle body; 11-tip; 111-drill tooth; 112-connecting hole; 12-water flow channel; 13-nozzle; 14-spray hole; 15-threaded through hole; 16-locking hole; 17-mounting hole two; 2-Connector; 21-Outlet channel; 22-Outlet; 23-Rotating part; 24-Guide groove; 25-Connecting hole; 3-End cap; 4-Guide component; 41-Guide ball; 42-Slot; 5-Conical head; 51-Connecting rod; 52-Mounting hole one; 6-Elastic locking bar; 61-Spring; 7- Annular impeller. Detailed Implementation

[0018] To better understand the structure, functional features, and advantages of the present invention, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings: Example 1: like Figures 1 to 5 As shown, the present invention provides a flexible shaft cleaning device for unclogging oil and gas pipelines, comprising: The nozzle body 1 has a tip 2, a water flow channel 12, and multiple nozzles 13 connected to the water flow channel 12; The connector 2 has a water outlet channel 21 and a water outlet 22 connected to the water outlet channel 21. The water outlet channel 21 is connected to the pressurizing equipment through a hose. The nozzle body 1 is rotated and sleeved on the connector 2 so that the water outlet channel 21 is connected to the water flow channel 12 through the water outlet 22. End cap 3, which restricts the rotation of connector 2 within nozzle body 1; The guide member 4 is connected to the nozzle body 1 and slides into the guide groove 24 on the rotating part 23 of the connector 2, so that the water entering the water flow channel 12 through the water outlet channel 21 is sprayed out through the nozzle 13 to drive the nozzle body 1 to rotate on the connector 2, so that the guide groove 24 slides on the guide member 4, thereby making the nozzle body 1 perform axial reciprocating linear motion on the connector 2.

[0019] Furthermore, the pressurization device of the present invention uses a high-pressure pump or a high-pressure pumping device to spray water through the nozzle body 1 at high pressure.

[0020] See Figure 5The guide groove 24 has an annular wave structure, and a guide ball 41 is provided at the end of the guide member 4, with the guide ball 41 located within the guide groove 24. Furthermore, the annular wave structure of the guide groove 24 can have multiple wave crests, so that the guide ball 41 rotates once around the rotating part 23, and the nozzle body 1 performs multiple reciprocating movements. Further, the number of wave crests is 1-4. When there is one wave crest, the guide ball 41 rotates once around the rotating part 23, and the nozzle body 1 performs one reciprocating movement. When there are two wave crests, the guide ball 41 rotates once around the rotating part 23, and the nozzle body 1 performs two reciprocating movements.

[0021] See Figure 4 Multiple nozzles 13 are evenly distributed circumferentially on the nozzle body 1, and are inclined downward and to one side along the nozzle body 1 so that the water jet from the nozzles 13 can drive the nozzle body 1 to rotate on the connector 2.

[0022] See Figure 2 and Figure 5 The rotating part 23 is provided with a plurality of connecting holes 25 along the axial direction. The connecting holes 25 connect the upper and lower spaces of the water flow channel 12 so that when the nozzle body 1 moves axially back and forth on the connector 2, the water flow in the water flow channel 12 at the lower end of the nozzle body 1 can flow into the upper part of the water flow channel 12 to reduce the water resistance when the nozzle body 1 moves axially back and forth.

[0023] See Figure 3 The tip 2 has a conical structure and is provided with drill teeth 111. The tip 2 is also provided with a nozzle 14 that communicates with the water flow channel 12. The nozzle 14 is used to spray water jets along the axial direction of the nozzle body 1 to clean the scale sample located at the front end. Furthermore, the nozzles 13 can also be evenly distributed circumferentially between the drill teeth 111. The nozzles 13 can be inclined along the rotation direction of the nozzle body 1 or along the axial direction of the nozzle body 1.

[0024] The working principle of this invention is as follows: In use, a high-pressure device pressurizes the water to force a high-pressure water flow through a hose into the connector 2, and then into the nozzle body 1 through the outlet 22 on the connector 2. The high-pressure water flow inside the nozzle body 1 is then ejected outwards through multiple nozzles 13. The nozzle body 1 rotates on the connector 2 due to the downward and side-sloping nozzles 13. During this rotation, the guide member 4 on the nozzle body 1 slides within the guide groove 24 of the annular wave structure on the connector 2, causing the nozzle body 1 to perform axial reciprocating linear motion on the connector 2, thereby impacting the scale deposited on the inner wall of the pipeline. Simultaneously, the downward and side-sloping nozzles 13 allow the nozzle body 1 to move automatically forward within the pipeline.

[0025] Example 2: As another embodiment of the present invention, such as Figure 6 and Figure 13 As shown, the oil and gas pipeline unblocking flexible shaft cleaning device also includes a cone head 5, which is connected to the tip 2 to close the nozzle 14. A connecting rod 51 is provided at the end of the cone head 5, and the connecting rod 51 is threaded or plugged into the nozzle 14. The cone head 5 has multiple mounting holes 52, and the tip 2 has multiple connecting holes 112. The cone head 5 is threaded into the connecting holes 112 by connecting bolts passing through the mounting holes 52. The connecting rod 51 is used to seal the nozzle 14, and the mounting holes 52 are used to fix the cone head 5 onto the nozzle 14. Additionally, when the nozzle 14 has internal threads, the connecting rod 51 has external threads; when the nozzle 14 is a smooth hole, the connecting rod 51 is a smooth rod. In this case, the cone head 5 can be connected to the end face of the nozzle 14 through the mounting holes 52 using connecting bolts. There are three mounting holes 52 on the cone head 5. Each mounting hole 52 is a through hole or has a recessed platform with a through hole in the recessed platform.

[0026] When the mounting hole 52 is a round hole with a recessed platform and a through hole on the recessed platform, the connecting rod 51 can be a smooth rod structure, and the cone head 5 can be connected through multiple connecting holes 112 on the tip 2 of the connecting bolt to fix the cone head 5 to the end of the tip 2.

[0027] This embodiment uses a detachable cone head 5 to close and open the nozzle 14, so as to select whether to use the front nozzle 14 on the tip 2 as needed.

[0028] Example 3: As another embodiment of the present invention, such as Figures 7 to 14 As shown, the guide 4 is provided with an external thread, and the nozzle body 1 is provided with a threaded through hole 15. The guide 4 is threadedly connected to the threaded through hole 15 through the external thread, so that the guide ball 41 at its end passes through the threaded through hole 15 to slide and engage with the guide groove 24, so that the guide ball 41 can pass through the guide groove 24 to make the rotating nozzle body 1 reciprocate axially on the connector 2.

[0029] See Figure 14The nozzle body 1 has a locking hole 16 arranged axially inside, and a second mounting hole 17 for mounting the end cap 3 is provided at the end of the nozzle body 1. One end of the locking hole 16 is perpendicularly connected to the threaded through hole 15, and the other end of the locking hole 16 is connected to the second mounting hole 17. An elastic locking rod 6 is slidably arranged in the locking hole 16. A groove 42 is provided on the guide member 4. By screwing in the mounting bolt in the second mounting hole 17, the elastic locking rod 6 is pushed to press the spring 61, so as to move and engage with the groove 42 on the guide member 4 located in the threaded through hole 15, thereby locking the rotational freedom of the guide member 4. This prevents the guide member 4 from rotating during the rotation of the nozzle body 1 on the connector 2, thus preventing the guide ball 41 from disengaging from the guide groove 24. Furthermore, the guide ball 41 can be a ball bearing, which is rotatably located at the end of the guide member 4, so that the rotating guide ball 41 at the end of the guide member 4 rolls and abuts against the guide groove 24.

[0030] Example 4: As another embodiment of the present invention, such as Figure 15 As shown, the oil and gas pipeline unblocking flexible shaft cleaning device also includes an annular impeller 7, which is located inside the nozzle body 1; the water outlet 22 is inclinedly located on the connector 2, so that the water coming out of the water outlet 22 is jetted onto the blade of the annular impeller 7, so that the water flow drives the annular impeller 7 to rotate, thereby driving the nozzle body 1 to rotate on the connector 2.

[0031] Furthermore, a threaded hole is provided through the nozzle body 1, and a connecting screw hole is provided on the outer ring of the annular impeller 7. The annular impeller 7 is inserted into the nozzle body 1, and a connecting bolt is used to pass through the threaded hole to connect with the connecting screw hole, so as to fix the annular impeller 7 in the nozzle body 1.

[0032] Furthermore, the water outlet 22 of the present invention can also be provided on the rotating part 23, so that the water flow from the connector 2 is directly aligned with the annular impeller 7, so that the water flow drives the annular impeller 7 to rotate the nozzle body 1 on the connector 2.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of the present invention.

Claims

1. An oil and gas pipeline clearing flexible shaft cleaning device, characterized in that , comprising: a spray head body (1) having a tip (2) and a water flow channel (12) and a plurality of spray openings (13) in communication with the water flow channel (12); a connector (2) having a water outlet channel (21) and a water outlet (22) in communication with the water outlet channel (21), the water outlet channel (21) being connected to a pressurized device through a hose, the spray head body (1) being rotatably sleeved on the connector (2) to make the water outlet channel (21) communicate with the water flow channel (12) through the water outlet (22); an end cover (3) limiting the rotation of the connector (2) in the spray head body (1); a guide (4) connected to the spray head body (1) and slidably fitted with a guide groove (24) on a rotating part (23) of the connector (2) to make the water entering the water flow channel (12) through the water outlet channel (21) sprayed out through the spray openings (13) to drive the spray head body (1) to rotate on the connector (2), so that the guide groove (24) slides on the guide (4), thereby making the spray head body (1) perform axial reciprocating linear motion on the connector (2).

2. The pigging device of claim 1, wherein, The guide groove (24) is in a ring wave structure, and the end of the guide (4) is provided with a guide ball (41) located in the guide groove (24).

3. The pigging device of claim 2, wherein, A plurality of the spray openings (13) are circumferentially and uniformly arranged on the spray head body (1) and are inclined downward and to one side.

4. The pig of claim 3, wherein, The tip (2) is in a conical structure, and the tip (2) is provided with a drill tooth (111); the tip (2) is provided with a spray hole (14) in communication with the water flow channel (12).

5. The pig of claim 4, wherein, The rotating part (23) is provided with a plurality of communication holes (25) in the axial direction, and the communication holes (25) communicate the upper and lower spaces of the water flow channel (12).

6. The pig of claim 5, wherein, It also includes a cone head (5) connected to the tip (2) to close the spray hole (14).

7. The pig of claim 6, wherein, The end of the cone head (5) is provided with a connecting rod (51) threadedly or plug-connected with the spray hole (14); the cone head (5) is provided with a plurality of mounting holes (52), and the tip (2) is provided with a plurality of connecting holes (112), and the cone head (5) is threadedly connected with the connecting holes (112) by connecting bolts passing through the mounting holes (52).

8. The pig of claim 7, wherein, The guide (4) is provided with external threads, and the spray head body (1) is provided with threaded through holes (15), and the guide (4) is connected with the threaded through holes (15) through the external threads.

9. The pig of claims 1 or 8, wherein, The lock hole (16) is arranged axially in the spray head body (1), the end of the spray head body (1) is provided with a mounting hole two (17) for mounting the end cover (3), one end of the lock hole (16) is in vertical communication with the threaded hole (15), the other end of the lock hole (16) is in communication with the mounting hole two (17), the elastic lock rod (6) is slidably arranged in the lock hole (16), the guide piece (4) is provided with a clamping groove (42), the mounting hole two (17) is pushed by a rotating mounting bolt to push the elastic lock rod (6) to press the spring (61), and the clamping groove (42) on the guide piece (4) located in the threaded hole (15) is inserted and connected.

10. The pig of claim 1, wherein, Further comprising a ring impeller (7), the ring impeller (7) is arranged in the spray head body (1); the water outlet (22) is arranged obliquely on the connecting head (2), so that the water jet from the water outlet (22) is sprayed on the blade plate of the ring impeller (7).

Images