Scraping and washing device in pipeline and cleaning method

Abstract

The invention discloses a pipeline interior scraping and washing device and a cleaning method, the pipeline interior scraping and washing device comprises a first leather cup, a second leather cup, scraping bristles, a connecting assembly, a steering assembly and a receiving pipe, the scraping bristles are arranged between the first leather cup and the second leather cup, the connecting assembly is arranged between the first leather cup and the scraping bristles, and the steering assembly is arranged on the side, away from the first leather cup, of the second leather cup; the receiving pipe is arranged on the side, away from the second leather cup, of the steering assembly. By means of the design of the steering assembly and the receiving pipe, the inner scraping and washing device is placed in the pipeline, a medium is input into the pipeline, the pushing device moves along the pipeline, meanwhile, the medium flows into the straight pipe through the receiving pipe, and finally the medium is sprayed out through the spraying pipe, so that the whole steering assembly generates rotating force to drive the whole steering assembly to rotate; the steering assembly drives the inner scraping and washing device to rotate through the connecting rod, so that shearing force is achieved during scraping and sweeping of the scraping hairs, and pipeline scaling is better scraped, swept and removed.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning oil pipelines, and in particular to an internal scraping and cleaning device and a cleaning method for deep-water pipelines in offshore oil and gas production. Background Art

[0002] With the advancement of offshore oilfield exploitation methods and technologies, submarine pipelines are widely used in the development of offshore oilfields. During the use of submarine pipelines, dirt will be generated and scale will form on the inner wall of the pipeline, resulting in a reduction in the flow area of ​​the pipeline. Therefore, after the pipeline has been used for a long time, the inner wall of the pipeline needs to be cleaned.

[0003] Existing oil pipeline cleaning usually adopts a pipe cleaner, which is placed in the pipe and pushed to move in the pipe by the medium output in the pipe. The pipe cleaner scrapes the inner wall of the pipe through its own scraping device. However, when the medium pushes the pipe cleaner, the medium directly acts on the end of the pipe cleaner to continuously push the pipe cleaner. However, if there is firm scaling on the inner wall of the pipe, it is not easy to scrape and peel off the scaling from the inner wall of the pipe. Summary of the invention

[0004] The object of the present invention is to provide a pipe scraping and cleaning device and a cleaning method to solve the problem that pipe scale cannot be effectively scraped and removed.

[0005] To achieve the above object, the present invention provides the following technical solution: a pipe scraping and cleaning device, which is special in that:

[0006] It includes a first leather cup, a second leather cup, a scraper, a connecting assembly and a receiving tube; the second leather cup is arranged on one side of the first leather cup; the scraper is arranged between the first leather cup and the second leather cup; the connecting assembly is arranged between the first leather cup and the scraper; the steering assembly is arranged on the side of the second leather cup away from the first leather cup; the receiving tube is connected to the steering assembly, and the receiving tube is located on the side of the steering assembly away from the second leather cup.

[0007] Preferably, the connecting assembly includes a connecting column, a first flange and a second flange: the connecting column is arranged between the first leather cup and the shaving brush; one side of the first flange is fixedly connected to one end of the connecting column; one side of the second flange is fixedly connected to the other end of the connecting column.

[0008] Preferably, a third flange is provided on the side of the first leather cup away from the first flange, a fixed disk is sleeved inside the scraper, a partition column is provided between the fixed disk and the second leather cup, and a fourth flange is provided on the side of the second leather cup away from the scraper.

[0009] Preferably, the first leather cup, the first flange and the third flange are respectively provided with a plurality of first through holes, the second flange, the fixed plate, the partition column, the second leather cup and the fourth flange are respectively provided with a plurality of second through holes, the first through holes are interspersed with first fixing bolts, and the second through holes are interspersed with second fixing bolts.

[0010] Preferably, a pull ring for pulling the internal scraping and cleaning device is fixedly connected to a side of the third flange away from the first leather cup.

[0011] Preferably, the steering assembly is arranged on a side of the fourth flange away from the second leather cup, and a connecting piece is arranged between the steering assembly and the fourth flange.

[0012] Preferably, the steering assembly includes a straight pipe, the middle part of which is fixedly connected to the connecting piece; both ends of the straight pipe are connected to the nozzles through curved pipes respectively, the axis of the straight pipe is perpendicular to the axis of the partition column, the middle part of the straight pipe is connected to the receiving pipe, the axis of the receiving pipe is perpendicular to the axis of the straight pipe, and the inlet of the receiving pipe is funnel-shaped.

[0013] Preferably, the connecting member comprises a connecting rod, and two ends of the connecting rod are fixedly connected to the outer wall of the straight pipe and one side of the fourth flange respectively.

[0014] Preferably, a compression section, an acceleration section and an injection section are provided inside the nozzle.

[0015] A method for cleaning the interior of a pipeline, using the pipeline scraping and cleaning device, the cleaning method comprises the following steps:

[0016] The first step is to place the internal scraper and cleaner, open the pipe cover of the oil pipe, place the internal scraper and cleaner into the oil pipe, and close the pipe cover;

[0017] The second step is to move the internal scraping and cleaning device, open the valve, and allow the medium flowing in the pipeline to push the internal scraping and cleaning device to move along the inside of the pipeline;

[0018] The third step is pipeline cleaning. The medium flows into the straight pipe through the receiving pipe and is finally accelerated and ejected by two nozzles, thereby driving the scraping device in the pipeline to move along the pipeline and rotate. The device moves along the pipeline and scrapes the inner wall of the pipeline through the first leather cup, scraping hair and second leather cup. The device rotates, so that the scraping hair has shear force, which can better scrape and remove the scale in the pipeline.

[0019] Technical effects and advantages of the present invention:

[0020] The present invention utilizes the design of a steering assembly and a receiving tube. After the internal scraping and cleaning device is placed in the pipeline, a medium is input into the pipeline to push the device to move along the pipeline, thereby scraping the inner wall of the pipeline through the first leather cup, scraping bristles and the second leather cup. At the same time, the medium will flow into the interior of the straight pipe through the receiving tube and finally be sprayed out by the nozzle, so that the steering assembly as a whole has a rotational force, thereby driving the rotation of the steering assembly as a whole. The steering assembly drives the rotation of the internal scraping and cleaning device through the connecting rod, so that the scraping bristles have shear force when scraping, so as to better scrape and remove scale on the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 for Figure 1 Another angle view of

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the shaving and second leather cup of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the second leather cup and the steering assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the fourth flange and steering assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the steering assembly of the present invention;

[0027] Figure 7 For the present invention Figure 6 A is a schematic diagram of the enlarged structure.

[0028] In the figure: 1. first leather cup; 2. connecting assembly; 201. connecting column; 202. first flange; 203. second flange; 3. second leather cup; 4. scraper; 5. third flange; 6. first fixing bolt; 7. pull ring; 8. partition column; 9. fixing plate; 10. fourth flange; 11. second fixing bolt; 12. steering assembly; 1201. straight pipe; 1202. bent pipe; 1203. nozzle; 12031. compression section; 12032. acceleration section; 12033. injection section; 13. receiving pipe; 14. connecting rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1

[0031] See also Figure 1 and Figure 2 The present invention provides a scraping and cleaning device for a pipeline, comprising: a first leather cup 1, a second leather cup 3, a scraper 4, a connecting component 2, a steering component 12 and a receiving tube 13.

[0032] The second leather cup 3 is arranged on one side of the first leather cup 1; the scraper 4 is arranged between the first leather cup 1 and the second leather cup 3; the connecting component 2 is arranged between the first leather cup 1 and the scraper 4; the steering component 12 is arranged on the side of the second leather cup 3 away from the first leather cup 1; the receiving tube 13 is arranged on the side of the steering component 12 away from the second leather cup 3.

[0033] Specifically, see Figure 1 and Figure 2 The connecting component 2 includes a connecting column 201, a first flange 202 and a second flange 203, wherein the connecting column 201 is arranged between the first leather cup 1 and the shaving 4; one side of the first flange 202 is fixedly connected to one end of the connecting column 201; one side of the second flange 203 is fixedly connected to the other end of the connecting column 201.

[0034] Specifically, see Figure 1-Figure 4 A third flange 5 is provided on the side of the first leather cup 1 away from the first flange 202, the scraper 4 is installed on the fixed plate 9, a partition column 8 is provided between the fixed plate 9 and the second leather cup 3, and a fourth flange 10 is provided on the side of the second leather cup 3 away from the scraper 4.

[0035] Specifically, see Figure 3 and Figure 4 A plurality of first through holes are respectively provided in the interior of the first leather cup 1, the first flange 202 and the third flange 5, a plurality of second through holes are respectively provided in the interior of the second flange 203, the fixing plate 9, the partition column 8, the second leather cup 3 and the fourth flange 10, a first fixing bolt 6 is inserted and connected in the interior of the first through hole, and a second fixing bolt 11 is inserted and connected in the interior of the second through hole.

[0036] See also Figure 1 A pull ring 7 for pulling the inner scraping device is fixedly connected to the side of the third flange 5 away from the first leather cup 1.

[0037] See also Figure 1 and Figure 2 In this embodiment, the first leather cup 1, the connecting assembly 2, the second leather cup 3, the scraping bristles 4, the third flange 5, the first fixing bolt 6, the pull ring 7, the dividing column 8, the fixing plate 9, the fourth flange 10 and the second fixing bolt 11 constitute an existing leather cup type pipeline internal scraping and washing device, the scraping bristles 4 are bristles composed of metal wires, and the scraping bristles 4 are fixedly connected to the outer wall of the fixing plate 9 by means of hair planting, the dividing column 8 is used to separate the second leather cup 3 and the fixing plate 9, the third flange 5 and the first flange 202 are used to clamp the first leather cup 1, the pull ring 7 is convenient for hooking when the internal scraping and washing device is taken out, and the contact part between the pull ring 7 and the third flange 5 is welded and fixed; the fourth flange 10 and the second flange 203 are clamped to the fixing plate 9 and the second leather cup 3 by the second fixing bolt 11; the first leather cup 1 is arranged between the third flange 5 and the first flange 202, and is inserted in The first leather cup 1, the third flange 5 and the first flange 202 are fixedly installed by inserting the second fixing bolt 11 into the second through hole of the second leather cup 3, the partition column 8, the fixing plate 9, the fourth flange 10 and the second flange 203, and the matching nut is sleeved on the outer wall of the end of the second fixing bolt 11, and the second leather cup 3, the partition column 8, the fixing plate 9, the fourth flange 10 and the second flange 203 are fixedly installed. The two ends of the connecting column 201 are respectively welded and fixed to the opposite ends of the first flange 202 and the second flange 203, so that the first leather cup 1, the connecting assembly 2, the second leather cup 3, the scraper 4, the third flange 5, the pull ring 7, the partition column 8, the fixing plate 9 and the fourth flange 10 form a whole. The inner scraping and cleaning device is placed in the pipeline. As the medium in the pipeline flows in, the second leather cup 3 is pushed to move along the pipeline direction, so that the first leather cup 1, the second leather cup 3 and the scraper 4 scrape the inner wall of the pipeline to clean the inner wall of the pipeline.

[0038] Specifically, see Figure 1 , Figure 4 , Figure 5 and Figure 6 The steering assembly 12 is arranged on a side of the fourth flange 10 away from the second leather cup 3 , and a connecting piece is arranged between the steering assembly 12 and the fourth flange 10 .

[0039] The steering assembly 12 includes a straight pipe 1201, the middle part of which is fixedly connected to the connecting piece; both ends of the straight pipe 1201 are connected to the nozzle 1203 through the curved pipe 1202 respectively, the axis of the straight pipe 1201 is perpendicular to the axis of the partition column 8, the middle part of the straight pipe 1201 is connected to the receiving pipe 13, the axis of the receiving pipe 13 is perpendicular to the axis of the straight pipe 1201, and the inlet of the receiving pipe 13 is funnel-shaped.

[0040] The connecting member includes a connecting rod 14, and both ends of the connecting rod 14 are fixedly connected to the outer wall of the straight pipe 1201 and one side of the fourth flange 10 respectively. Figure 7 The interior of the nozzle 1203 is provided with a compression section 12031, an acceleration section 12032 and an injection section 12033, and the inner diameter of the acceleration section 12032 is smaller than the inner diameters of the compression section 12031 and the injection section 12033.

[0041] In this embodiment, see Figure 4-Figure 7 The two ends of the connecting rod 14 are respectively welded and fixed to the fourth flange 10 and the side opposite to the straight pipe 1201. The two ends of the straight pipe 1201 are respectively provided with a bent pipe 1202. The ends of the straight pipe 1201 and the bent pipe 1202 are connected through, and the end of the bent pipe 1202 away from the straight pipe 1201 is connected through the end of the nozzle 1203. The straight pipe 1201, the bent pipe 1202 and the nozzle 1203 are arranged parallel to the fourth flange 10. The straight pipe 1201, the bent pipe 1202 and The nozzle 1203 is S-shaped, the vertical section of the receiving tube 13 is funnel-shaped, the small-diameter end of the receiving tube 13 is connected to the outer wall of the straight tube 1201, the receiving tube 13 and the fourth flange 10 are arranged perpendicular to each other, and the medium part of the second leather cup 3 will enter the receiving tube 13, and then flow into the inside of the straight tube 1201, and flow into the nozzle 1203 through the elbow 1202. The inside of the nozzle 1203 is arranged in three sections, the compression section 12031 is the medium compression section, and the acceleration section 12032 is the medium The acceleration section and the injection section 12033 are medium injection sections, which flow from the bend pipe 1202 into the compression section 12031. The medium will increase in flow rate as the diameter of the compression section 12031 gradually decreases, and then flow into the acceleration section 12032. Finally, the medium is injected in the injection section 12033 as the diameter of the section gradually increases, thereby increasing the flow rate of the medium when it flows out of the nozzle 1203. Under the joint action of the two nozzles 1203, the steering assembly 12 has the power to rotate, so that the straight pipe 1201 drives the fourth flange 10 to rotate through the connecting rod 14, so that the entire internal scraping and washing device rotates, ensuring that the internal scraping and washing device can rotate synchronously while moving along the direction of the pipeline. The device moves along the pipeline, and scrapes the inner wall of the pipeline through the first leather cup, the scraping bristles and the second leather cup. The device rotates, so that the scraping bristles 4 have shear force when removing scale on the inner wall of the pipeline, thereby better scraping off the scale, cleaning the pipeline, and improving the cleaning ability of the internal scraping and washing device.

[0042] Embodiment 2, a method for cleaning the inside of a pipeline, which uses the above-mentioned internal scraping and cleaning device, and the cleaning method comprises the following steps:

[0043] The first step is to place the internal scraper and cleaner, open the pipe cover of the oil pipe, place the internal scraper and cleaner into the oil pipe, and close the pipe cover;

[0044] The second step is to move the internal scraping and cleaning device, open the valve, and allow the medium flowing in the pipeline to push the internal scraping and cleaning device to move along the inside of the pipeline;

[0045] The third step is pipeline cleaning. The medium flows into the straight pipe 1201 through the receiving pipe 13 and is finally ejected by the two nozzles 1203, thereby driving the scraping device in the pipeline to move and rotate. The device moves along the pipeline and scrapes the inner wall of the pipeline through the first leather cup 1, scraping bristles 4 and the second leather cup 3. The device rotates, so that the scraping bristles 4 have shear force to scrape and remove the scale on the pipeline.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A scraping and cleaning device for a pipeline, characterized in that: include: First leather bowl (1); A second leather cup (3), wherein the second leather cup (3) is arranged on one side of the first leather cup (1); A shaving device (4), wherein the shaving device (4) is arranged between the first leather cup (1) and the second leather cup (3); A connecting component (2), wherein the connecting component (2) is arranged between the first leather cup (1) and the shaving brush (4); A steering assembly (12), wherein the steering assembly (12) is arranged on a side of the second leather cup (3) away from the first leather cup (1); A receiving tube (13) is connected to the steering assembly (12), and the receiving tube (13) is located on a side of the steering assembly (12) away from the second leather cup (3).

2. A pipe scraping and cleaning device according to claim 1, characterized in that: The connection component (2) comprises: A connecting column (201), wherein the connecting column (201) is arranged between the first leather cup (1) and the shaving brush (4); A first flange (202), one side of the first flange (202) being fixedly connected to one end of the connecting column (201); A second flange (203), one side of the second flange (203) is fixedly connected to the other end of the connecting column (201).

3. A pipe scraping and cleaning device according to claim 2, characterized in that: A third flange (5) is provided on the side of the first leather cup (1) away from the first flange (202), a fixed plate (9) is sleeved inside the scraper (4), a partition column (8) is provided between the fixed plate (9) and the second leather cup (3), and a fourth flange (10) is provided on the side of the second leather cup (3) away from the scraper (4).

4. A pipe scraping and cleaning device according to claim 3, characterized in that: The third flange (5), the first leather cup (1) and the first flange (202) are respectively provided with first through holes, the second flange (203), the fixed plate (9), the partition column (8), the second leather cup (3) and the fourth flange (10) are respectively provided with second through holes, the first through hole is connected with a first fixing bolt (6) and the second through hole is connected with a second fixing bolt (11).

5. A pipe scraping and cleaning device according to claim 3, characterized in that: A pull ring (7) for pulling the internal scraping and cleaning device is fixedly connected to the side of the third flange (5) away from the first leather cup (1).

6. A pipe scraping and cleaning device according to claim 3, characterized in that: The steering assembly (12) is arranged on a side of the fourth flange (10) away from the second leather cup (3), and the steering assembly (12) and the fourth flange (10) are fixed via a connecting piece.

7. A pipe scraping and cleaning device according to claim 6, characterized in that: The steering assembly (12) comprises: A straight tube (1201), wherein the middle portion of the straight tube (1201) is fixedly connected to the connecting piece; both ends of the straight tube (1201) are connected to the nozzle (1203) via the curved tube (1202), and the axis of the straight tube (1201) is perpendicular to the axis of the partition column (8). The middle part of the straight tube (1201) is connected to the receiving tube (13), the axis of the receiving tube (13) is perpendicular to the axis of the straight tube (1201), and the inlet of the receiving tube 13 is funnel-shaped.

8. A pipe scraping and cleaning device according to claim 7, characterized in that: The connecting piece comprises: A connecting rod (14), wherein both ends of the connecting rod (14) are respectively fixedly connected to the outer wall of the straight pipe (1201) and one side of the fourth flange (10).

9. A pipe scraping and cleaning device according to claim 7, characterized in that: The interior of the nozzle (1203) is provided with a compression section (12031), an acceleration section (12032) and an injection section (12033) in sequence.

10. A method for cleaning the inside of a pipeline, using the pipeline scraping and cleaning device according to claim 7 or 9, characterized in that: The cleaning method includes the following steps: The first step is to place the internal scraper and cleaner, open the pipe cover of the oil pipe, place the internal scraper and cleaner into the oil pipe, and close the pipe cover; The second step is to move the internal scraping and cleaning device, open the valve, and allow the medium flowing in the pipeline to push the internal scraping and cleaning device to move along the inside of the pipeline; The third step is pipeline cleaning. The medium flows into the straight pipe (1201) through the receiving pipe (13) and is finally ejected by the two nozzles (1203), thereby driving the scraping device in the pipeline to move along the pipeline and rotate at the same time. The device moves along the pipeline and scrapes the inner wall of the pipeline through the first leather cup (1), scraping bristles (4) and the second leather cup (3). The device rotates, so that the scraping bristles (4) have shear force to scrape and remove the scale on the pipeline.

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