An automatic cleaning device and method for oilfield pumping pipelines

Abstract

This invention discloses an automatic cleaning device and method for oilfield pumping pipelines, relating to the field of pipeline dredging technology. It includes a pipeline handling system for loading and unloading materials from the pumping pipeline. The pipeline handling system includes a base, with a steel pipe platform and a finished product platform respectively installed on both sides of the base. Several material handling mechanisms are fixedly connected to the top of the base. One end of the pipeline handling system is equipped with an air compressor system for blowing air into the pipeline, and a heating component for heating the pipeline is installed above the pipeline handling system. This invention uses a medium-frequency heater to heat the pipeline before cleaning, thereby melting and separating the contaminants adhering to the inner wall of the pipeline. After the pipeline is heated, the compressed air valve is opened, and the instantaneous burst of compressed air flushes out the blockages inside the pipe, achieving non-destructive dredging of the pipeline. This allows the pipeline to be reused, thus reducing oilfield costs.

Description

Technical Field

[0001] This invention relates to the field of pipeline dredging technology, specifically to an automatic cleaning device and method for oilfield pumping pipelines. Background Technology

[0002] During oilfield extraction, crude oil is drawn up through pumping pipes. As the crude oil passes through these pipes, some substances from the oil adhere and solidify on the inner wall. Furthermore, because oilfield pumping pipes need to traverse frozen soil areas, and these deposits gradually accumulate on the pipe walls, blockages can occur, hindering oil transport operations. In practice, these pipes need to be cleaned and dredged to facilitate reuse and reduce oilfield costs.

[0003] Existing oil pipeline cleaning and dredging equipment, such as the oil pipeline cleaning and dredging device disclosed in publication number CN206997270U, ​​cleans by pushing a flexible metal shaft with spiral blades into the oil pipeline for comparison. This cleaning method causes significant damage to the pipeline, is slow and inefficient, and cannot meet the requirements for continuous cleaning of multiple pipelines. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic cleaning device and method for oilfield pumping pipelines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An automatic cleaning device for oilfield pumping pipelines includes a pipeline handling system for loading and unloading materials into the pipeline. One end of the pipeline handling system is equipped with an air compressor system for blowing air into the pipeline, and the other end of the pipeline handling system is equipped with a sewage discharge assembly for discharging contaminants from the pipeline. Above the pipeline handling system is a heating assembly for heating the pipeline. The heating assembly includes a mounting bracket, and a medium-frequency heater is fixedly installed in the middle of the mounting bracket.

[0007] As a further embodiment of the present invention: the pipeline handling system includes a base, on both sides of the base are respectively provided a steel pipe platform and a finished product platform, and a number of picking and placing mechanisms are fixedly connected to the top of the base. The picking and placing mechanism includes a limiting frame, the top of the limiting frame is inclined and has a number of equally spaced limiting grooves, and the height of the top of the limiting frame closer to the finished product platform is lower.

[0008] A rotating block is rotatably connected to the top of one side of the limiting frame, and a transfer frame is rotatably connected to one end of the rotating block. Several transfer rollers arranged at equal intervals are rotatably connected to the inner wall of the transfer frame. A transfer cylinder is fixedly connected to the bottom of one side of the limiting frame. A transfer push plate is rotatably connected to the output end of the transfer cylinder. The middle part of the transfer push plate is rotatably connected to one side of the transfer frame. A receiving plate is slidably connected to one end of the limiting frame. One side of the receiving plate is rotatably connected to one end of the transfer push plate. The rotation of the transfer push plate drives the receiving plate to move up and down. The top of the transfer push plate extends into the transfer frame.

[0009] As a further aspect of the present invention: a lifting and rotating mechanism is fixedly connected to the middle of the base, the lifting and rotating mechanism includes a lifting cylinder, the output unit of the lifting cylinder is fixedly connected to a lifting frame, the inner wall of the lifting frame is rotatably connected to a lifting roller, a rotating cylinder is provided on one side of the lifting cylinder, the output end of the rotating cylinder is fixedly connected to a rotating support frame, and the inner wall of the rotating support frame is rotatably connected to two rotating guide wheels.

[0010] As a further aspect of the present invention: the compressed air system includes a compressed air assembly for generating high-pressure airflow and a docking and locking assembly for docking and locking the pipe ends.

[0011] The docking locking assembly includes a docking frame, a docking cylinder is fixedly installed on one side of the docking frame, a connecting frame is fixedly connected to the output end of the docking cylinder, a docking sleeve is fixedly connected to the top of the connecting frame, the end edge of the docking sleeve is inclined, and an air supply pipe is fixedly connected to the other side of the docking sleeve. One end of the air supply pipe is connected to the output end of the air compressor assembly. The air compressor assembly includes a cooling water tank, an air storage tank, an operating platform, and a controller, etc., and the structure is implemented using existing technology.

[0012] As a further aspect of the present invention: the sewage discharge assembly includes a sewage discharge frame, a sealing docking ring is fixedly installed in the middle of the sewage discharge frame, a sewage discharge pipe is fixedly connected to one side of the sealing docking ring, and the bottom of the sewage discharge pipe is bent downwards.

[0013] As a further aspect of the present invention: the steel pipe platform includes several equidistantly arranged placement racks, the tops of the placement racks are all inclined, and the end closer to the pipe handling system is lower in height. The tops of the two placement racks at both ends are fixedly connected to end baffles, and the sides of the two end baffles that are far apart are bent upwards; the steel pipe platform is used to place the pipes to be cleaned.

[0014] As a further aspect of the present invention: the finished product platform includes several storage racks, the top of which is fixedly connected to a storage plate. The storage plate is tilted upwards on the side away from the pipeline transport system. The finished product platform is used to place the cleaned pipeline.

[0015] As a further aspect of the present invention, both sides of the base are fixedly connected with a sludge collection groove.

[0016] The present invention also provides a method for cleaning oilfield pumping pipelines, comprising the following steps;

[0017] Step 1: Arrange the pipes to be cleaned on the steel pipe platform;

[0018] Step 2: Move the pipes one by one from the steel pipe platform to the lifting position;

[0019] Step 3: Lift the pipes on the lifting station to bring them close to the heating components, and then lock the pipe ends with the docking and locking components;

[0020] Step 4: Heat the pipes and drive them to rotate during the heating process;

[0021] Step 5: After the pipe is heated, a high-pressure airflow is introduced from one end of the pipe, and the dirt inside the pipe is discharged from the other end, completing the cleaning of the pipe;

[0022] Step Six: Loosen the pipe by connecting the locking assembly, and send the cleaned pipe into the finished product platform for collection.

[0023] Compared with the prior art, the beneficial effects of the present invention are: the present invention sets up a heating component and uses a medium frequency heater to heat the pipeline before cleaning, thereby melting the dirt attached to the inner wall of the pipeline and separating it from the pipeline; after the pipeline is heated, compressed air is used to burst out the blockage in the pipeline in an instant, realizing non-destructive unblocking of the pipeline, making the pipeline reusable and thus reducing oilfield costs.

[0024] This invention features a steel pipe platform for placing pipes to be cleaned, with two end baffles limiting the positions of the pipes to ensure consistent loading and unloading postures, facilitating pipe transfer and docking during the cleaning process. A finished product platform with a raised storage plate at one end provides temporary storage for the cleaned pipes.

[0025] During the movement of the pipeline, the present invention uses several limiting grooves to support multiple sections of the pipeline. The top of the limiting frame is lower on the side near the finished product platform, which facilitates the pipeline to slide down the limiting frame and improves the convenience of pipeline material transfer operation. The movement of the material transfer cylinder drives the material transfer push plate to rotate, which in turn drives the receiving plate to rise and one end of the material transfer frame to lift up, so that the pipeline moves under the action of gravity, realizing the one-by-one feeding operation of the pipeline. Attached Figure Description

[0026] Figure 1 The three-dimensional representation of the present invention Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the material handling mechanism of the present invention;

[0028] Figure 3 This is a schematic diagram of the lifting and rotating mechanism of the present invention;

[0029] Figure 4 The three-dimensional representation of the present invention Figure 2 ;

[0030] Figure 5 This is a schematic diagram of the structure of the docking locking assembly of the present invention;

[0031] Figure 6 This is a flowchart of the method of the present invention.

[0032] In the diagram: 1. Base; 2. Sewage rack; 3. Air compressor assembly; 4. Sewage receiving trough; 5. Storage rack; 7. Placement rack; 8. End baffle; 9. Limiting frame; 10. Limiting groove; 11. Transfer frame; 12. Transfer roller; 13. Rotating block; 14. Transfer cylinder; 15. Transfer push plate; 16. Receiving plate; 17. Rotary cylinder; 18. Rotary support frame; 19. Rotary guide wheel; 20. Lifting cylinder; 21. Lifting roller; 22. Docking frame; 23. Docking cylinder; 24. Docking sleeve; 25. Air supply pipe; 26. Sealing docking ring; 27. Sewage pipe; 28. Mounting suspension; 29. ​​Medium frequency heater; 30. Pipeline. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-5In this embodiment of the invention, an automatic cleaning device for oilfield pumping pipelines includes a pipeline handling system for loading and unloading pumping pipelines 30. One end of the pipeline handling system is equipped with an air compressor system for blowing airflow into the pipeline 30, and the other end of the pipeline handling system is equipped with a sewage discharge component for discharging contaminants from the pipeline 30. Above the pipeline handling system is a heating component for heating the pipeline 30. The heating component includes a mounting bracket 28, and a medium-frequency heater 29 is fixedly installed in the middle of the mounting bracket 28. By setting up the heating component, the medium-frequency heater 29 heats the pipeline 30 before cleaning, thereby melting the contaminants adhering to the inner wall of the pipeline 30 and separating them from the pipeline 30, thus improving the cleaning effect of subsequent air-blowing cleaning.

[0035] The pipeline handling system includes a base 1, and several sludge collection troughs 4 are fixedly connected to both sides of the base 1. The sludge collection troughs 4 are set as arc-shaped plates with a concave center, which are used to receive sludge spilled during cleaning and material handling, so as to facilitate the centralized treatment of sludge.

[0036] A steel pipe platform and a finished product platform are respectively set on both sides of the base 1. The steel pipe platform includes several equidistantly arranged placement racks 7. The tops of the placement racks 7 are all inclined, and the end closer to the pipe handling system is lower, so that the pipe 30 can gradually fall under the action of gravity during the loading process. The tops of the two placement racks 7 at both ends are fixedly connected to end baffles 8, and the two end baffles 8 are bent upward on the side away from each other. By setting up the steel pipe platform, the pipe 30 to be cleaned is placed. The two end baffles 8 limit the two ends of the pipe 30 to ensure the consistency of the loading posture and position of the pipe 30, thereby facilitating the transfer and docking operation of the pipe 30 during loading, unloading and cleaning.

[0037] The finished product platform includes several storage racks 5. A storage plate is fixedly connected to the top of the storage rack 5. The storage plate is tilted upwards on the side away from the pipeline transportation system. By setting up the finished product platform, the cleaned pipeline 30 can be temporarily stored using the storage plate with one end tilted upwards.

[0038] Several waste collection troughs 4 on both sides are arranged with gaps, which are used to facilitate the placement of racks 7 and storage racks 5.

[0039] Several material handling mechanisms are fixedly connected to the top of the base 1. The material handling mechanism includes a limiting frame 9. The top of the limiting frame 9 is inclined and has several equally spaced limiting grooves 10. The limiting grooves 10 support multiple sections of the pipe 30 during its downward movement. The height of the top of the limiting frame 9 near the finished product platform is relatively low, which facilitates the pipe 30 to slide down along the limiting frame 9 and improves the convenience of material handling operation of the pipe 30.

[0040] A rotating block 13 is rotatably connected to the top of one side of the limiting frame 9. A transfer frame 11 is rotatably connected to one end of the rotating block 13. Several transfer rollers 12 are rotatably connected to the inner wall of the transfer frame 11. A gap is provided between any two adjacent transfer rollers 12. Several gaps correspond to several limiting grooves 10 and are used to cooperate with the limiting grooves 10 to achieve temporary storage of several pipes 30.

[0041] To achieve the individual transfer of pipes 30 on the limiting frame 9, a transfer cylinder 14 is fixedly connected to the bottom of one side of the limiting frame 9. A transfer push plate 15 is rotatably connected to the output end of the transfer cylinder 14. The middle part of the transfer push plate 15 is rotatably connected to one side of the transfer frame 11. A receiving plate 16 is slidably connected to one end of the limiting frame 9. One side of the receiving plate 16 is rotatably connected to one end of the transfer push plate 15. The rotation of the transfer push plate 15 drives the receiving plate 16 to move up and down. The top of the transfer push plate 15 extends into the transfer frame. The movement of the transfer cylinder 14 drives the transfer push plate 15 to rotate, which in turn drives the receiving plate 16 to rise and one end of the transfer frame to lift, so that the pipes 30 are moved under the action of gravity, realizing the individual feeding operation of the pipes 30.

[0042] A lifting and rotating mechanism is fixedly connected to the middle of the base 1. The lifting and rotating mechanism includes a lifting cylinder 20. The output unit of the lifting cylinder 20 is fixedly connected to a lifting frame. The inner wall of the lifting frame is rotatably connected to a lifting roller 21. A rotating cylinder 17 is provided on one side of the lifting cylinder 20. A rotating support frame 18 is fixedly connected to the output end of the rotating cylinder 17. Two rotating guide wheels 19 are rotatably connected to the inner wall of the rotating support frame 18. By setting up the lifting and rotating mechanism, the pipe 30 is driven to rise and move closer to the heating component. The heating component works with the heating component to heat the pipe 30, improving the heating efficiency of the heating component. After approaching the heating component, the pipe 30 is driven to rotate, thereby improving the heating uniformity of the pipe 30.

[0043] The compressed air system includes a compressed air assembly 3 for generating high-pressure airflow and a docking locking assembly for docking and locking the end of the pipe 30. The docking locking assembly includes a docking frame 22, a docking cylinder 23 fixedly installed on one side of the docking frame 22, a connecting frame fixedly connected to the output end of the docking cylinder 23, and a docking sleeve 24 fixedly connected to the top of the connecting frame. The end edge of the docking sleeve 24 is inclined, and an air supply pipe 25 is fixedly connected to the other side of the docking sleeve 24. One end of the air supply pipe 25 is connected to the output end of the compressed air assembly 3. The docking cylinder 23 drives the docking sleeve 24 to move and push against the end of the pipe 30, so that the other end of the pipe 30 is inserted into the sealing docking ring 26, thereby locking the position of the pipe 30 and ensuring the positional stability of the pipe 30 during the cleaning process. The compressed air assembly 3 includes a cooling water tank, an air storage tank, an operating platform, and a controller, etc., and the structure is implemented using existing technology.

[0044] To achieve stable collection of sewage discharged from the end of pipe 30, the sewage discharge assembly includes a sewage discharge frame 2, a sealing docking ring 26 is fixedly installed in the middle of the sewage discharge frame 2, a sewage discharge pipe 27 is fixedly connected to one side of the sealing docking ring 26, and the bottom of the sewage discharge pipe 27 is bent downward.

[0045] Please see Figure 6 This embodiment also provides a method for cleaning oilfield pumping pipelines, including the following steps;

[0046] Step 1: Arrange the pipes to be cleaned 30 on the steel pipe platform;

[0047] Step 2: Move the 30 pipes on the steel pipe platform one by one to the lifting position;

[0048] Step 3: Lift the pipe 30 on the lifting station to bring it close to the heating component, and then lock the pipe 30 with the docking locking component;

[0049] Step 4: Heat pipe 30 and drive pipe 30 to rotate during the heating process;

[0050] Step 5: After the pipe 30 is heated, a high-pressure airflow is sent into one end of the pipe 30, and the dirt in the pipe 30 is discharged from the other end, completing the cleaning of the pipe 30;

[0051] Step Six: Loosen the pipe by connecting the locking assembly, and send the cleaned pipe 30 into the finished product platform for collection.

[0052] When using this invention, the pipes 30 to be cleaned are arranged in a single layer on a steel pipe platform, and several placement racks 7 support the steel pipes. The bent portions of the end baffles 8 on both sides limit the two ends of the pipes 30. Due to the inclined setting of the placement racks 7, each pipe 30 moves towards the limiting racks 9 under the action of gravity.

[0053] When the pipe 30 needs to be moved, the transfer cylinder 14 is activated to drive the transfer push plate 15 to rotate, which in turn drives the receiving plate 16 to rise and one end of the transfer frame to lift, so that the pipe 30 moves to the next limiting groove 10 at a lower height position until the pipe 30 moves to the position of the lifting and rotating mechanism. The lifting roller 21 and the rotating guide rail support the pipe 30. This position is the lifting position of the pipe 30. The lifting cylinder 20 and the rotating cylinder 17 are activated to drive the pipe 30 to rise close to the medium frequency heater 29. The docking cylinder 23 drives the docking sleeve 24 to move and push against the end of the pipe 30, so that the other end of the pipe 30 is inserted into the sealing docking ring 26 to lock the position of the pipe 30. The medium frequency heater 29 is activated to heat the pipe 30. The common blockages in the pipe 30 are mainly composed of ice, paraffin and oil. Medium frequency heating melts the main blockages. The heating temperature is controlled within 200 degrees Celsius to ensure that the mechanical properties of the pipe 30 are not affected.

[0054] During the heating process, the rotating guide wheel 19 drives the pipe 30 to rotate, so that the pipe 30 is heated evenly. After the heating is completed, the air compressor assembly 3 is started and high-pressure air is sent into the air supply pipe 25 to blow out the dirt in the pipe 30, so that the dirt enters the drain pipe 27 and is sent out, thus completing the cleaning of the pipe 30.

[0055] After cleaning is completed, the lifting cylinder 20 and the rotating cylinder 17 drive the pipe 30 to descend and reset. Then, the docking cylinder 23 drives the docking sleeve 24 to reset. The material transfer cylinder 14 is started again, driving the pipe 30 on the next station to move down, so that the cleaned pipe 30 moves down along the top surface of the limit frame 9 and moves to the finished product platform, where it is supported and collected.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automatic cleaning device for oilfield pumping pipelines, characterized in that, The system includes a pipeline handling system for loading and unloading oil extraction pipeline (30). The pipeline handling system includes a base (1), on both sides of which are respectively provided a steel pipe platform and a finished product platform. Several material handling mechanisms are provided on the top of the base (1). One end of the pipeline handling system is provided with an air compressor system for blowing air into the pipeline (30), and the other end of the pipeline handling system is provided with a sewage discharge assembly. A heating assembly for heating the pipeline (30) is provided above the pipeline handling system. The material handling mechanism includes a limiting frame (9), the top of which is inclined and has several limiting grooves (10); a rotating block (13) is rotatably connected to the top of one side of the limiting frame (9), a transfer frame (11) is rotatably connected to one end of the rotating block (13), and several transfer rollers (12) are rotatably connected to the inner wall of the transfer frame (11); a transfer cylinder (14) is fixedly connected to the bottom of one side of the limiting frame (9), a transfer push plate (15) is rotatably connected to the output end of the transfer cylinder (14), the middle part of the transfer push plate (15) is rotatably connected to one side of the transfer frame (11), and a receiving plate (16) is slidably connected to one end of the limiting frame (9), and one side of the receiving plate (16) is rotatably connected to one end of the transfer push plate (15); A lifting and rotating mechanism is fixedly connected to the middle of the base (1). The lifting and rotating mechanism includes a lifting cylinder (20). The output unit of the lifting cylinder (20) is fixedly connected to a lifting frame. The inner wall of the lifting frame is rotatably connected to a lifting roller (21). A rotating cylinder (17) is provided on one side of the lifting cylinder (20). A rotating support frame (18) is fixedly connected to the output end of the rotating cylinder (17). Two rotating guide wheels (19) are rotatably connected to the inner wall of the rotating support frame (18). The compressed air system includes a compressed air assembly (3) for generating high-pressure airflow and a docking locking assembly for docking and locking the end of the pipe (30). The docking locking assembly includes a docking frame (22), a docking cylinder (23) is fixedly installed on one side of the docking frame (22), a connecting frame is fixedly connected to the output end of the docking cylinder (23), a docking sleeve (24) is fixedly connected to the top of the connecting frame, and an air supply pipe (25) is fixedly connected to the other side of the docking sleeve (24). One end of the air supply pipe (25) is connected to the output end of the compressed air assembly (3).

2. The automatic cleaning device for oilfield pumping pipelines according to claim 1, characterized in that, The sewage discharge assembly includes a sewage discharge frame (2), a sealing docking ring (26) is fixedly installed in the middle of the sewage discharge frame (2), a sewage discharge pipe (27) is fixedly connected to one side of the sealing docking ring (26), and the bottom of the sewage discharge pipe (27) is bent downward.

3. The automatic cleaning device for oilfield pumping pipelines according to claim 1, characterized in that, The steel pipe platform includes several equidistant placement racks (7), the tops of the several placement racks (7) are inclined, and the tops of the two placement racks (7) at both ends are fixedly connected with end baffles (8).

4. The automatic cleaning device for oilfield pumping pipelines according to claim 1, characterized in that, The finished product platform includes several storage racks (5), and a storage plate is fixedly connected to the top of the storage rack (5). The storage plate is inclined on the side away from the pipeline transportation system.

5. A method for cleaning oilfield pumping pipelines, characterized in that, Includes the following steps; Step 1: Arrange the pipes (30) to be cleaned on the steel pipe platform; Step 2: Transfer the pipes (30) one by one from the steel pipe platform to the lifting position; Step 3: Lift the pipe (30) on the lifting station to bring it close to the heating component, and then lock the pipe (30); Step 4: Heat the pipe (30) and drive the pipe (30) to rotate during the heating process; Step 5: After the pipe (30) is heated, a high-pressure airflow is sent into one end of the pipe (30), and the dirt in the pipe (30) is discharged from the other end, thus completing the cleaning of the pipe (30); Step 6: Send the cleaned pipe (30) to the finished product platform for collection.

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