Gathering and transportation pipeline cleaner

Abstract

A gathering and transportation pipeline cleaner relates to the technical field of oil and gas gathering and transportation pipelines. A low-speed input shaft of the speed reducer A is fixedly connected with a propeller, a high-speed output shaft of the speed reducer A is fixedly connected with a universal joint, the other side of the universal joint is fixedly connected with a low-speed input shaft of a speed reducer B, and a high-speed output shaft of the speed reducer B is fixedly connected with a scraper; a shell of the speed reducer A is fixedly connected with the brake assembly. A shell of the speed reducer B is fixedly connected with the supporting assembly. The device has the beneficial effects that the braking assembly is arranged and has two effects, on one hand, a permanent magnet block is attracted to the inner wall of the pipeline, so that a speed reducer A moves slowly in the pipeline, the moving speed of a propeller is lower than the flowing speed of fluid, the propeller is driven by the fluid to rotate, and through the speed increasing effect of the speed reducer A and a speed reducer B, the speed of the propeller is increased; in addition, the brake assembly plays a role in centering and supporting, and the supporting assembly ensures that the scraper is centered to the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas gathering and transportation pipelines, and in particular to a gathering and transportation pipeline pig. Background Art

[0002] With the long-term operation of long-distance oil and gas pipelines, wax will form on the inner wall of the pipeline, and dust particles and impurities will be deposited, which will reduce the flow area of ​​the pipeline and cause the actual transportation capacity of the pipeline to decrease. It is very necessary to provide a pipe cleaner that can remove wax, deposited impurities and other impurities on the inner wall of the pipeline. Publication No. CN 110434129 B discloses a pipe cleaner, which is provided with a rear housing, a rotating member, a rear transmission assembly, an active universal shaft, a front housing, a driven universal shaft, a front transmission assembly, and a scraping member. When the fluid drives the rotating member to rotate, the rotating member sequentially transmits the rotational force to the rear transmission assembly, the active universal shaft, the driven universal shaft, the front transmission assembly, and the scraping member to scrape the dirt on the inner wall of the target pipe; In this technical solution, the fluid is used to drive the pipe cleaner to move forward. If the moving speed of the pipe cleaner is the same as the fluid, the propeller will flow with the fluid, and the pipe cleaner cannot use the kinetic energy of the fluid to clean the pipe. The pipe cleaner must be equipped with a braking mechanism, that is, the moving speed of the pipe cleaner is lower than the flow speed of the fluid, so that the kinetic energy of the fluid can be used to clean the pipe. The technical solution mentions the support wheel assembly, which is also for the scraper to center the pipeline, and it does not play a braking role for the pipe cleaner. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention provides a gathering and transportation pipeline pig.

[0004] The technical solution provided by the present invention is: a gathering and transportation pipeline pig, comprising a reducer A and a reducer B, both of which are coaxial low-speed input and high-speed output type reduction mechanisms, the low-speed input shaft of the reducer A is fixedly connected to a propeller, the high-speed output shaft of the reducer A is fixedly connected to a universal joint, the other side of the universal joint is fixedly connected to the low-speed input shaft of the reducer B, and the high-speed output shaft of the reducer B is fixedly connected to a scraper; The housing of reducer A is fixedly connected to a brake assembly, there are three brake assemblies, and the three brake assemblies are arranged circumferentially along the axis of reducer A. The housing of reducer B is fixedly connected to a support assembly, there are three support assemblies, and the three support assemblies are arranged circumferentially along the axis of reducer B. The brake assembly includes a base B, which is fixedly connected to the outer shell of the reducer A. A telescopic sleeve B is provided on the outer side of the base B. The telescopic sleeve B has a blind hole. The telescopic sleeve B is guided and slidably connected to the telescopic column B. A positioning column B is provided on the outer side of the telescopic column B. A support block is provided on the outer side of the positioning column B. A compression spring B is provided between the support block and the base B. A square groove is processed on the outer side of the support block, and a permanent magnet block is embedded in the square groove.

[0005] The supporting assembly includes a base A, which is fixedly connected to the outer shell of the reducer B. A telescopic sleeve A is provided on the outer side of the base A. The telescopic sleeve A has a blind hole. The telescopic sleeve A is slidingly connected to the telescopic column A through a guide. A positioning column A is provided on the outer side of the telescopic column A. A wheel bracket is provided on the outer side of the positioning column A. The wheel bracket is rotatably connected to a roller. A compression spring A is provided between the wheel bracket and the base A.

[0006] The outer surface of the permanent magnet block is an arc surface, and limiting grooves are opened inside the square groove on both sides of the permanent magnet block. The support block is provided with a set screw extending into the limiting groove.

[0007] The support block is provided with an elastic sheet in the scraper direction. The elastic sheet is fixedly connected to the support block by bolts. The outer end surface of the elastic sheet is flush with the outer end surface of the permanent magnet.

[0008] The universal joint includes a left half joint, a right half joint and a cross shaft, and the cross shaft connects the left half joint and the right half joint through a spherical roller bearing.

[0009] The inner hole of the compression spring B is sleeved on the outer side of the telescopic sleeve B and the positioning column B through interference fit, and the inner hole of the compression spring A is sleeved on the outer side of the telescopic sleeve A and the positioning column A through interference fit.

[0010] The beneficial effects of the present invention are as follows: reducer A and reducer B are connected by a universal joint, the pipe cleaner can adapt to curved pipes, and the arrangement of the brake assembly has two functions. On the one hand, the permanent magnet block is attracted to the inner wall of the pipe, so that reducer A moves slowly in the pipe, and the moving speed of the propeller is lower than the flow speed of the fluid. The propeller rotates under the drive of the fluid, and the speed-increasing effect of reducer A and reducer B drives the scraper to scrape the inner wall of the pipe at high speed. In addition, the brake assembly also plays the role of centering support, and the support assembly ensures that the scraper is centered on the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a schematic diagram of the structure of the present invention; Attached Figure 2 Yes Figure 1 BB cross-section diagram; Attached Figure 3 Yes Figure 2 A magnified image of point A; Attached Figure 4 It is a structural schematic diagram of the support assembly in the present invention; Attached Figure 5 It is a structural schematic diagram of the brake assembly in the present invention; Attached Figure 6 It is a structural schematic diagram of the universal joint in the present invention.

[0012] In the figure, 1-propeller, 2-reducer A, 3-reducer B, 4-scraper, 5-universal joint, 51-right half section, 52-left half section, 53-cross shaft, 54-spherical roller bearing, 6-support assembly, 61-roller, 62-wheel bracket, 63-positioning column A, 64-telescopic column A, 65-telescopic sleeve A, 66-base A, 67-compression spring A, 7-brake assembly, 71-permanent magnet block, 711-arc surface, 712-limiting groove, 72-support block, 721-square groove, 73-positioning column B, 74-telescopic column B, 75-telescopic sleeve B, 76-base B, 77-elastic sheet, 78-compression spring B. DETAILED DESCRIPTION

[0013] like Figures 1 to 6 As shown, a gathering and transportation pipeline pig includes a reducer A2 and a reducer B3. The reducers A2 and B3 are coaxial low-speed input and high-speed output type reduction mechanisms. The low-speed input shaft of the reducer A2 is fixedly connected to a propeller 1, and the high-speed output shaft of the reducer A2 is fixedly connected to a universal joint 5. The other side of the universal joint 5 is fixedly connected to the low-speed input shaft of the reducer B3, and the high-speed output shaft of the reducer B3 is fixedly connected to a scraper 4. The housing of reducer A2 is fixedly connected to a brake assembly 7, and there are three brake assemblies 7, which are arranged circumferentially along the axis of reducer A2. The housing of reducer B3 is fixedly connected to a support assembly 6, and there are three support assemblies 6, which are arranged circumferentially along the axis of reducer B3. The brake assembly 7 includes a base B76, which is fixedly connected to the outer shell of the reducer A2. A telescopic sleeve B75 is provided on the outer side of the base B76. The telescopic sleeve B75 has a blind hole. The telescopic sleeve B75 is internally guided and slidably connected to the telescopic column B74. A positioning column B73 is provided on the outer side of the telescopic column B74. A support block 72 is provided on the outer side of the positioning column B73. A compression spring B78 is provided between the support block 72 and the base B76. A square groove 721 is processed on the outer side of the support block 72, and a permanent magnet block 71 is embedded in the square groove 721.

[0014] The reducer A2 and the reducer B3 are connected by a universal joint 5, and the pipe cleaner can adapt to curved pipes. The brake assembly 7 has two functions. On the one hand, the permanent magnet block 71 is attracted to the inner wall of the pipe, so that the reducer A2 moves slowly in the pipe. The moving speed of the propeller 1 is lower than the flow speed of the fluid. The propeller 1 rotates under the drive of the fluid, and the speed-increasing effect of the reducer A2 and the reducer B3 drives the scraper 4 to scrape the inner wall of the pipe at a high speed. In addition, the brake assembly 7 also plays the role of centering support, and the support assembly 6 ensures that the scraper 4 is centered on the pipe.

[0015] The supporting assembly 6 includes a base A66, which is fixedly connected to the outer shell of the reducer B3. A telescopic sleeve A65 is provided on the outer side of the base A66. The telescopic sleeve A65 has a blind hole. The telescopic sleeve A65 is guided and slidably connected to the telescopic column A64. A positioning column A63 is provided on the outer side of the telescopic column A64. A wheel bracket 62 is provided on the outer side of the positioning column A63. The wheel bracket 62 is rotatably connected to the roller 61. A compression spring A67 is provided between the wheel bracket 62 and the base A66.

[0016] The outer surface of the permanent magnet block 71 is an arc surface 711, and the arc surface 711 has the same size as the inner wall of the pipe to be cleaned. Limiting grooves 712 are opened inside the square grooves 721 on both sides of the permanent magnet block 71. The support block 72 is provided with a fixing screw that extends into the limiting groove 712. Different permanent magnet blocks 71 can be replaced according to different pipes.

[0017] The support block 72 is provided with an elastic sheet 77 in the direction of the scraper 4. The elastic sheet 77 is fixedly connected to the support block 72 by bolts. The outer end surface of the elastic sheet 77 is flush with the outer end surface of the permanent magnet 71. The elastic sheet 77 can block impurities scraped off by the scraper 4 to ensure the fit and magnetic attraction between the permanent magnet block 71 and the inner wall of the pipe.

[0018] The universal joint 5 includes a left half section 52, a right half section 51 and a cross shaft 53. The cross shaft 53 connects the left half section 52 and the right half section 51 through a spherical roller bearing 54, so that the connection between the reducer A2 and the reducer B3 has a certain flexibility, which is suitable for the operation of the pipe cleaning device in the elbow, tee and other parts in the pipeline.

[0019] The inner hole of the compression spring B78 is interference fit on the outside of the telescopic sleeve B75 and the positioning column B73, and the inner hole of the compression spring A67 is interference fit on the outside of the telescopic sleeve A65 and the positioning column A63. The connection is reliable, and different compression springs A67 and compression springs B78 can be replaced according to different pipelines.

Claims

1. A gathering and transportation pipeline pig, comprising a reducer A (2) and a reducer B (3), characterized in that: The reducer A (2) and the reducer B (3) are both coaxial low-speed input and high-speed output type reduction mechanisms. The low-speed input shaft of the reducer A (2) is fixedly connected to the propeller (1), the high-speed output shaft of the reducer A (2) is fixedly connected to the universal joint (5), the other side of the universal joint (5) is fixedly connected to the low-speed input shaft of the reducer B3, and the high-speed output shaft of the reducer B (3) is fixedly connected to the scraper (4); The housing of the reducer A (2) is fixedly connected to a brake assembly (7), and there are three brake assemblies (7). The three brake assemblies (7) are arranged along the circumference of the axis of the reducer A (2). The housing of the reducer B (3) is fixedly connected to a support assembly (6), and there are three support assemblies (6). The three support assemblies (6) are arranged along the circumference of the axis of the reducer B (3). The brake assembly (7) comprises a base B (76), the base B (76) being fixedly connected to the outer shell of the reducer A (2), a telescopic sleeve B (75) being arranged on the outer side of the base B (76), the telescopic sleeve B (75) having a blind hole, a telescopic column B (74) being guided and slidably connected inside the telescopic sleeve B (75), a positioning column B (73) being arranged on the outer side of the telescopic column B (74), a support block (72) being arranged on the outer side of the positioning column B (73), a compression spring B (78) being arranged between the support block (72) and the base B (76), a square groove (721) being processed on the outer side of the support block (72), and a permanent magnet block (71) being embedded in the square groove (721).

2. A gathering and transportation pipeline pig according to claim 1, characterized in that: The support assembly (6) comprises a base A (66), the base A (66) being fixedly connected to the outer shell of the reducer B (3), a telescopic sleeve A (65) being arranged on the outer side of the base A (66), the telescopic sleeve A (65) having a blind hole, the telescopic sleeve A (65) being guided and slidably connected to the telescopic column A (64), a positioning column A (63) being arranged on the outer side of the telescopic column A (64), a wheel bracket (62) being arranged on the outer side of the positioning column A (63), the wheel bracket (62) being rotatably connected to the roller (61), and a compression spring A (67) being arranged between the wheel bracket (62) and the base A (66).

3. A gathering and transportation pipeline pig according to claim 1, characterized in that: The outer surface of the permanent magnet block (71) is an arc surface (711), and limiting grooves (712) are opened inside the square groove (721) on both sides of the permanent magnet block (71), and the support block (72) is provided with a set screw extending into the limiting groove (712).

4. A gathering and transportation pipeline pig according to claim 1, characterized in that: The support block (72) is provided with an elastic sheet (77) in the direction of the scraper (4); the elastic sheet (77) is fixedly connected to the support block (72) by bolts; and the outer end surface of the elastic sheet (77) is flush with the outer end surface of the permanent magnet (71).

5. A gathering and transportation pipeline pig according to claim 1, characterized in that: The universal joint (5) comprises a left half joint (52), a right half joint (51) and a cross shaft (53), wherein the cross shaft (53) connects the left half joint (52) and the right half joint (51) via a spherical roller bearing (54).

6. A gathering and transportation pipeline pig according to claim 1, characterized in that: The inner hole of the compression spring B (78) is sleeved on the outside of the telescopic sleeve B (75) and the positioning column B (73) by interference fit, and the inner hole of the compression spring A (67) is sleeved on the outside of the telescopic sleeve A (65) and the positioning column A (63) by interference fit.

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