An inner wall cleaning device for remanufacturing old oil pipes

Abstract

An inner wall cleaning device for old oil pipe remanufacturing, the utility model relates to oil pipe recycling technical field, the U-shaped frame is two, opposite symmetry fixed settings in the upper and lower two sides of the feeding column, and the U-shaped frame sets up in the right side of the movable groove that the U-shaped frame set up left end of the feeding column, the rotating block is two, is respectively through the hinged axle hinged settings in the U-shaped frame, the movable through slot is opened in the rotating block, the arc scraping head, the arc scraping head is two, is respectively set up in the left side of the rotating block, the drive assembly, the drive assembly sets up in the inside of the movable groove, through the automatic switching of double scraping heads, realized the purpose that can switch the scraping head continuous operation without stopping, thereby greatly promoted the cleaning efficiency, and ensured that the operation was stable and the cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of oil pipe reuse technology, specifically to an inner wall cleaning device for the remanufacturing of old oil pipes. Background Technology

[0002] As a key pressure-bearing component in the oil and gas extraction process, tubing serves for a long time in complex downhole environments. After one or more service cycles, tubing is brought to the surface, with a large number of tubing rendered unusable due to damage to its inner and outer walls. This damage mainly includes: scale buildup on the inner wall, corrosion products, residual drilling fluid, cementing fluid, and corrosion pits of varying degrees. Remanufacturing these old tubings to restore or even surpass their performance to that of new products has significant economic and environmental value. Among the many processes in the remanufacturing of old tubing, inner wall cleaning is a crucial and primary technical step. The most common existing tubing inner wall cleaning technology is mechanical cleaning. However, the scraper blades wear out quickly during cleaning, resulting in poor cleaning of the inner walls deep within the tubing. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a simple, rationally designed, and easy-to-use inner wall cleaning device for the remanufacturing of old oil pipes. Through automatic switching between dual scraper heads, it achieves continuous operation without stopping the machine, thereby significantly improving cleaning efficiency and ensuring stable operation and cleaning effect.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: it includes a base, a feed block, and a feed assembly. Two pipe supports are arranged on the upper left side of the base, a feed block is arranged on the upper right side of the base, a feed assembly is arranged on the right side of the feed block, a rotary motor is arranged on the left side of the feed block, a feed column is arranged at the output end of the rotary motor, and a grinding head is arranged at the left end of the feed column; it also includes: The U-shaped frame consists of two U-shaped frames, which are symmetrically fixed on the upper and lower sides of the feed column, and the U-shaped frame is located on the right side of the movable slot opened at the left end of the feed column; Two rotating blocks are respectively hinged to each other in the U-shaped frame via hinge shafts; a movable through groove is provided in the rotating block. Two arc-shaped scrapers are respectively located on the left side of the rotating block; A drive component, wherein the drive component is disposed inside the movable slot; With the above technical solution, the old oil pipe is placed on the pipe rack, and the drive assembly drives the rotating block to rotate one of the two arc-shaped scrapers to contact the inner wall of the oil pipe, while the other arc-shaped scraper is in a retracted state. During the feeding process, the arc-shaped scraper in contact with the inner wall of the oil pipe scrapes away the scale on the inner wall of the oil pipe. When the arc-shaped scraper is damaged, the drive assembly reverses, causing the damaged arc-shaped scraper to retract, and the originally retracted arc-shaped scraper opens to contact the oil pipe to continue the cleaning work.

[0005] As a further improvement of this utility model, the driving component includes: The driving rod is movably inserted into the movable groove, and a driving platform is sleeved and fixed on the driving rod. The driving platform is slidably disposed in the movable groove. The upper and lower ends of the driving rod are respectively movably inserted into the movable through groove. Guide rods are provided at the front and rear of the end of the driving rod located in the movable through groove. The guide rods are slidably inserted into the guide grooves that are provided on the front and rear sides of the movable through groove. The drive motor is fixedly mounted on the bottom of the movable slot by a motor bracket. A lead screw is provided on the output end of the drive motor and is threaded through the drive platform. The above technical solution design starts the drive motor to rotate the lead screw, which in turn drives the drive table via a threaded drive, causing the drive rod to move.

[0006] As a further improvement of this utility model, the feed assembly includes: A fixing block is fixedly installed on the upper right side of the base, and a feed motor is provided on the right side of the fixing block; A feed gear, wherein the feed gear is sleeved and fixed on the output end of the feed motor; The transmission gear consists of two gears, which are respectively meshed on the front and rear sides of the feed gear. A transmission shaft is inserted and fixed inside the transmission gear, and the transmission shaft is screwed into the fixed block through a bearing. The transmission screws consist of two screws, each fixedly mounted on the left end of the transmission shaft; and the transmission screws are threadedly inserted into the feed block. The above technical solution design starts the feed motor, which causes the feed gear to mesh with the transmission gears on both sides, thereby rotating the transmission screw, driving the feed block, and causing the feed column to move forward.

[0007] As a further improvement of this utility model, a cover is provided on the right side of the fixing block, and the feed gear and transmission gear are both located inside the cover; thus protecting the feed gear and transmission gear.

[0008] As a further improvement of this utility model, a limiting bracket is provided on the base, and the limiting bracket is located between the pipe rack and the feed block on the right side; to position the right end of the oil pipe.

[0009] As a further improvement of this utility model, a support block is fixedly and symmetrically arranged between the left and right pipe supports. An electric push rod is set on the upper side of the support block through a bracket, and a clamp is set on the inner end of the electric push rod to position the oil pipe.

[0010] The working principle of this utility model is as follows: The old oil pipe is placed horizontally on two pipe supports, with the right end of the pipe abutting against the limiting bracket. Simultaneously, two electric push rods are activated, causing the clamps to move towards the oil pipe, clamping it and reinforcing its stability. During cleaning, a drive motor drives a lead screw, causing the drive platform and drive rod to slide within the moving groove of the rotating block. This controls the arc-shaped scrapers on the two rotating blocks, with one pressing against the inner wall of the oil pipe and the other retracted for later use. Subsequently, a rotary motor starts, driving the grinding head at the front end of the feed column and the selected arc-shaped scraper to rotate together. Simultaneously, the feed motor drives the transmission gears and transmission screws on both sides through the feed gear, pushing the feed block, grinding head, and arc-shaped scraper into the oil pipe at a uniform speed. At this time, the rotating arc-shaped scraper scrapes away the scale. If the scraper is damaged during operation, it can be immediately switched to a spare scraper via the drive assembly to continue operation, thus achieving continuous and efficient cleaning without stopping the machine.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The pipe rack, limit bracket and clamp work together to limit and position the oil pipe, which not only makes the oil pipe more stable during the cleaning process, but also aligns the central axis of the oil pipe with the central axis of the feed column, so that the feed column can drive the grinding head to carry out the cleaning work. 2. By precisely controlling the direction and stroke of the drive motor, one of the rotating blocks can be completely retracted, with its arc-shaped scraper head moving away from the inner wall of the oil pipe, while the other rotating block is in an open state, with its arc-shaped scraper head precisely pressed against the inner wall of the oil pipe; when one of the arc-shaped scraper heads is damaged, it can be quickly switched to the other arc-shaped scraper head, reducing downtime for replacement and improving work efficiency. 3. Two synchronous transmission screws are used to drive the feed block, improving the drive balance and achieving smooth movement of the feed block. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 yes Figure 1 A schematic diagram of the southeast isometric structure.

[0014] Figure 3 This is a schematic diagram of the feed column in this utility model.

[0015] Figure 4 This is a schematic diagram of the internal structure of the feed column in this utility model.

[0016] Figure 5 yes Figure 4 Enlarged view of part A.

[0017] Figure 6 This is a schematic diagram of the limiting bracket in this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Base, 2. Feed block, 3. Feed assembly, 3-1. Fixed block, 3-2. Feed motor, 3-3. Feed gear, 3-4. Transmission gear, 3-5. Transmission screw, 3-6. Cover, 4. Pipe rack, 5. Rotary motor, 6. Feed column, 6-1. Movable groove, 7. Grinding head, 8. U-shaped frame, 9. Rotating block, 9-1. Moving through groove, 9-2. Guide groove, 10. Arc scraper, 11. Drive assembly, 11. Drive rod, 11-1. Drive table, 11-2. Guide rod, 11-3. Drive motor, 11-4. Lead screw, 11-5. Limit bracket, 12. Support block, 13. Electric push rod, 14. Clamp, 15. Oil pipe, 16. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example 1:

[0021] Please see Figures 1-6 This embodiment includes a base 1, a feed block 2, and a feed assembly 3. Two pipe supports 4 are arranged on the upper left side of the base 1. A limit bracket 12 is provided on the base 1, and the limit bracket 12 is positioned between the right-side pipe support 4 and the feed block 2. Support blocks 13 are symmetrically fixed between the two pipe supports 4. An electric push rod 14 is mounted on the upper side of the support block 13 via a bracket, and a clamp 15 is provided at the inner end of the electric push rod 14. The feed block 2 is arranged on the upper right side of the base 1. The feed assembly 3 is located on the right side of the feed block 2, and a rotary motor 5 is located on the left side of the feed block 2. The specific model of the rotary motor 5 is purchased and installed directly from the market according to actual usage requirements. A feed column 6 is provided at the output end of the rotary motor 5, and a grinding head 7 is provided at the left end of the feed column 6. It also includes: U-shaped frame 8, there are two U-shaped frames 8, which are symmetrically fixed on the upper and lower sides of the feed column 6, and the U-shaped frame 8 is located on the right side of the movable slot 6-1 opened at the left end of the feed column 6; Two rotating blocks 9 are respectively hinged to each other in the U-shaped frame 8 via hinge shafts; a movable through groove 9-1 is provided in the rotating block 9. Two arc-shaped scraper heads 10 are respectively located on the left side of the rotating block 9; Drive component 11, wherein the drive component 11 is disposed inside the movable slot 6-1; Using the above design, the old oil pipe 16 is placed on the pipe rack 4. The drive assembly 11 drives the rotating block 9 to rotate one of the two arc-shaped scrapers 10 to contact the inner wall of the oil pipe 16, while the other arc-shaped scraper 10 is in a retracted state. During the feeding process, the arc-shaped scraper 10 in contact with the inner wall of the oil pipe 16 scrapes away the scale on the inner wall of the oil pipe 16. When the arc-shaped scraper 10 is damaged, the drive assembly 11 reverses, causing the damaged arc-shaped scraper 10 to retract. The originally retracted arc-shaped scraper 10 opens to contact the oil pipe 16 and continues the cleaning work.

[0022] Example 2:

[0023] Please see Figures 1-6 Based on Embodiment 1, the driving component 11 is further improved and includes: A drive rod 11-1 is movably inserted into a movable groove 6-1, and a drive platform 11-2 is sleeved and fixed on the drive rod 11-1. The drive platform 11-2 is slidably disposed in the movable groove 6-1. The upper and lower ends of the drive rod 11-1 are respectively movably inserted into a movable through groove 9-1. Guide rods 11-3 are provided at the front and rear of the end of the drive rod 11-1 located in the movable through groove 9-1. The guide rods 11-3 are slidably inserted into guide grooves 9-2 that are provided through the front and rear sides of the movable through groove 9-1. The drive motor 11-4 is fixedly mounted on the bottom end of the movable slot 6-1 by a motor bracket. The specific model of the drive motor 11-4 is purchased and installed directly from the market according to the actual usage requirements. A lead screw 11-5 is provided on the output end of the drive motor 11-4. The lead screw 11-5 is threaded through the drive platform 11-2. Using the above design scheme, the drive motor 11-4 starts to make the lead screw 11-5 rotate, which drives the drive table 11-2 by thread, causing the drive rod 11-1 to move.

[0024] Example 3:

[0025] Please see Figures 1-6 Based on Embodiment 1, the feed component 3 is further improved and includes: The fixing block 3-1 is fixedly installed on the upper right side of the base 1, and the right side of the fixing block 3-1 is provided with a feed motor 3-2. The specific model of the feed motor 3-2 is purchased directly from the market and installed and used according to the actual use requirements. The right side of the fixing block 3-1 is provided with a cover 3-6, and the feed motor 3-2 is installed inside the cover 3-6. Feed gear 3-3 is sleeved and fixed on the output end of feed motor 3-2; The transmission gears 3-4 are two in number, respectively meshing on the front and rear sides of the feed gear 3-3, and a transmission shaft is inserted and fixed inside the transmission gears 3-4. The transmission shaft is screwed into the fixed block 3-1 through a bearing. There are two transmission screws 3-5, which are fixedly installed on the left end of the transmission shaft respectively; and the transmission screws 3-5 are threadedly screwed into the feed block 2. Using the above design scheme, the feed motor 3-2 is started, so that the feed gear 3-3 meshes with the transmission gears 3-4 on the front and rear sides, so that the transmission screw 3-5 rotates, thereby driving the feed block 2 and causing the feed column 6 to move forward.

[0026] When using this invention, the old oil pipe 16 is placed horizontally on two pipe supports 4, with the right end of the oil pipe 16 abutting against the limiting bracket 12. Simultaneously, the two electric push rods 14 are activated, causing the clamp 15 to move towards the oil pipe 16, clamping it and reinforcing its stability. During cleaning, the drive motor 11-4 drives the lead screw 11-5, causing the drive platform 11-2 and drive rod 11-1 to slide within the moving groove 9-1 of the rotating block 9. This controls the arc-shaped scrapers 10 on the two rotating blocks 9, causing one of them to press against the inner wall of the oil pipe 16. The other one is stored away for later use; then, the rotary motor 5 starts, driving the grinding head 7 at the front end of the feed column 6 and the selected arc-shaped scraper 10 to rotate together; at the same time, the feed motor 3-2 drives the transmission gears 3-4 and transmission screws 3-5 on both sides to start working through the feed gear 3-3, pushing the feed block 2, grinding head 7 and arc-shaped scraper 10 to feed into the oil pipe 16 at a uniform speed. At this time, the rotating arc-shaped scraper 10 scrapes off the scale; if the scraper is damaged during operation, it can be immediately switched to the spare scraper through the drive component 11 to continue the operation, thereby achieving continuous and efficient cleaning without stopping the machine.

[0027] Compared with the prior art, the beneficial effects of this utility model are: 1. The pipe rack 4, the limiting bracket 12 and the clamp 15 work together to limit and position the oil pipe 16, which not only makes the oil pipe 16 more stable during the cleaning process, but also aligns the central axis of the oil pipe 16 with the central axis of the feed column 6, making it easier for the feed column 6 to drive the grinding head 7 to perform cleaning work. 2. By precisely controlling the direction and stroke of the drive motor 11-4, one of the rotating blocks 9 can be completely retracted, with its arc-shaped scraper head 10 moving away from the inner wall of the oil pipe 16, while the other rotating block 9 is in an open state, with its arc-shaped scraper head 10 precisely pressed against the inner wall of the oil pipe 16; when one of the arc-shaped scraper heads 10 is damaged, it can be quickly switched to the other arc-shaped scraper head 10, reducing downtime for replacement and improving work efficiency; 3. Two transmission screws 3-5 are used for synchronous transmission to drive the feed block 2, thereby improving the driving balance and achieving smooth movement of the feed block 2.

[0028] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An inner wall cleaning device for remanufacturing old oil pipes, comprising a base (1), a feed block (2), and a feed assembly (3), wherein two pipe racks (4) are provided on the upper left side of the base (1), a feed block (2) is provided on the upper right side of the base (1), a feed assembly (3) is provided on the right side of the feed block (2), a rotary motor (5) is provided on the left side of the feed block (2), a feed column (6) is provided at the output end of the rotary motor (5), and a grinding head (7) is provided at the left end of the feed column (6); Its features are, Also includes: U-shaped frame (8), there are two U-shaped frames (8), which are symmetrically fixed on the upper and lower sides of the feed column (6), and the U-shaped frame (8) is located on the right side of the movable slot (6-1) opened at the left end of the feed column (6); Rotating blocks (9), there are two rotating blocks (9), which are respectively hinged in the U-shaped frame (8) by hinge shafts; a movable through groove (9-1) is opened in the rotating block (9); Two arc-shaped scraper heads (10) are respectively located on the left side of the rotating block (9); The drive component (11) is disposed inside the active slot (6-1).

2. The inner wall cleaning device for remanufacturing used oil pipes according to claim 1, characterized in that: The driving component (11) includes: A drive rod (11-1) is movably inserted into a movable groove (6-1), and a drive platform (11-2) is sleeved and fixed on the drive rod (11-1). The drive platform (11-2) is slidably disposed in the movable groove (6-1). The upper and lower ends of the drive rod (11-1) are respectively movably inserted into a movable through groove (9-1). Guide rods (11-3) are provided at the front and rear of the end of the drive rod (11-1) located in the movable through groove (9-1). The guide rods (11-3) are slidably inserted into guide grooves (9-2) that are provided on both the front and rear sides of the movable through groove (9-1). The drive motor (11-4) is fixedly mounted on the bottom end of the movable slot (6-1) by a motor bracket. A lead screw (11-5) is provided on the output end of the drive motor (11-4). The lead screw (11-5) is threaded through the drive platform (11-2).

3. The inner wall cleaning device for remanufacturing old oil pipes according to claim 1, characterized in that: The feed assembly (3) includes: The fixing block (3-1) is fixedly installed on the upper right side of the base (1), and a feed motor (3-2) is provided on the right side of the fixing block (3-1). The feed gear (3-3) is sleeved and fixed on the output end of the feed motor (3-2); The transmission gear (3-4) consists of two gears, which are respectively meshed on the front and rear sides of the feed gear (3-3). A transmission shaft is inserted and fixed inside the transmission gear (3-4), and the transmission shaft is screwed into the fixed block (3-1) through a bearing. The transmission screw (3-5) consists of two screws, which are fixedly installed on the left end of the transmission shaft. The transmission screw (3-5) is threaded through the feed block (2).

4. The inner wall cleaning device for remanufacturing old oil pipes according to claim 3, characterized in that: The right side of the fixed block (3-1) is provided with a cover (3-6), and the feed gear (3-3) and the transmission gear (3-4) are both located inside the cover (3-6).

5. The inner wall cleaning device for remanufacturing used oil pipes according to claim 1, characterized in that: The base (1) is provided with a limiting bracket (12), and the limiting bracket (12) is located between the tube rack (4) on the right side and the feed block (2).

6. The inner wall cleaning device for remanufacturing used oil pipes according to claim 1, characterized in that: Support blocks (13) are fixedly installed symmetrically between the left and right pipe supports (4). An electric push rod (14) is installed on the upper side of the support block (13) through a bracket. A clamp (15) is installed at the inner end of the electric push rod (14).

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