Oil and gas pipeline inner wall rust removal equipment and use method

Abstract

The petroleum and natural gas pipeline inner wall rust removal equipment and use method discloses to petroleum and natural gas technical field, including bottom plate, the bottom plate one side fixedly connected with side base, the bottom plate top is equipped with the row groove board, and the row groove board lower extreme is equipped with the support leg fixed with the bottom plate, a plurality of V-shaped grooves for placing natural gas pipeline are set up on the row groove board, and the bottom plate other side is equipped with the material receiving table;The stepping mechanism can be set up to the pipeline step feeding, when the pipeline moves to the clamping mechanism, the pipeline is fixed through the clamping mechanism, then the inner wall of the pipeline is polished and rusted through the rust removal mechanism, moves to the slag removal mechanism after rust removal, then the pipeline is ejected to the material receiving table through the pipe pushing mechanism and completes the unloading, and then the automatic continuous rust removal work of the pipeline can be realized, the batch pipeline rust removal work can be applied, the problem that the feeding and unloading need to waste a lot of time is avoided, and the work efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of oil and gas technology, specifically to rust removal equipment and its usage method for the inner walls of oil and gas pipelines. Background Technology

[0002] Natural gas is a mixture of hydrocarbon and non-hydrocarbon gases naturally occurring in underground strata. In petroleum geology, it usually refers to oilfield gas and natural gas field gas; it is mainly found in oil fields and natural gas fields, with a small amount also found in coal seams. The primary use of natural gas is as fuel. It can also be used to manufacture carbon black, chemicals, and liquefied petroleum gas. Propane and butane produced from natural gas are important raw materials for modern industry. Natural gas pipelines are used for transportation, and because the inner walls of these pipelines are prone to rusting during storage and transportation, rust removal is necessary before the pipelines are assembled and used.

[0003] For example, prior art CN109693169B proposes a rust removal and cleaning device for the inner wall of metal pipelines in chemical construction. This device can extend into the pipeline to grind and remove rust from the inner wall. Another example is prior art CN115625165B, which proposes a rust removal device and rust removal vehicle for the inner wall of a pipeline. This vehicle can enter the pipeline and then use a striking mechanism to remove rust from the inner wall of the pipeline.

[0004] While the aforementioned existing technologies can all remove rust from the inner walls of pipelines, during application, after processing one pipeline, manual manipulation of the pipeline or machine is required to place the next pipeline in the work position for grinding and rust removal. This wastes a significant amount of time when moving pipelines up and down, and the efficiency is relatively low. It cannot achieve continuous automated rust removal and is not suitable for batch pipeline rust removal. To address these issues, we provide an oil and gas pipeline inner wall rust removal device and its usage method to overcome the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a rust removal device and method for the inner wall of oil and gas pipelines to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The equipment for removing rust from the inner wall of oil and gas pipelines includes a base plate, a side base fixedly connected to one side of the base plate, a grooving plate above the base plate, a support leg fixed to the base plate at the lower end of the grooving plate, a number of V-shaped grooves for placing natural gas pipelines on the grooving plate, and a receiving platform on the other side of the base plate.

[0008] The base plate is provided with a stepping mechanism located below the channel plate to push the pipe to move one V-shaped groove at a time;

[0009] The base plate is provided with clamping mechanisms on both sides for clamping the natural gas pipeline;

[0010] The side base is provided with a rust removal mechanism for removing rust from the inner wall of the pipe held by the clamping mechanism. The rust removal mechanism includes a mounting plate, which is fixedly connected to both ends of the side base. A hexagonal bushing is rotatably connected to the mounting plate near the base plate. A rust removal head for grinding the inner wall of the natural gas pipeline is slidably connected inside the hexagonal bushing. A drive assembly for driving the hexagonal bushing to rotate is provided above the hexagonal bushing on the mounting plate. A push assembly for driving the hexagonal bushing to slide inside the hexagonal bushing is also provided between the two mounting plates.

[0011] The bottom plate is also equipped with a slag removal mechanism at one end of the drainage plate for removing rust from the pipe.

[0012] Below the slag removal mechanism is a pipe jacking mechanism for transferring the cleaned pipe to the receiving platform.

[0013] As a further embodiment of the present invention: the stepping mechanism includes a bottom slide rail, which is fixedly connected to the upper surface of the base plate. A sliding base plate is slidably connected between the two bottom slide rails. An inverted U-shaped frame is fixedly connected to both sides of the upper surface of the sliding base plate. A sliding frame is slidably connected to each of the inverted U-shaped frames. A V-groove plate that cooperates with the slotting plate is fixedly connected between the upper ends of the sliding frames. A second electric cylinder for driving the sliding frame to lift and lower is provided in the middle of the inverted U-shaped frame. A third electric cylinder for pushing the sliding base plate to move along the bottom slide rail is also provided at the position below the sliding base plate on the base plate.

[0014] As a further embodiment of the present invention: the clamping mechanism includes a vertical plate, which is fixedly connected to the base plate at the positions on both sides of the channel plate. The upper and lower ends of the vertical plate are provided with vertical sliding grooves, and I-shaped sliders are slidably connected in the vertical sliding grooves. Clamping arms for clamping the pipe are fixedly connected to the I-shaped sliders. A third gear is rotatably connected in the middle of the vertical plate. A third rack is fixedly connected to the two I-shaped sliders. The third racks mesh with the two sides of the third gear. The lower end of the vertical plate is also provided with a first electric cylinder for pushing the third racks to move up and down.

[0015] As a further embodiment of the present invention: the rust removal head includes a housing, which is fixedly connected to one end of a hexagonal shaft. A plurality of hollow sliders are slidably connected to the housing. A bidirectional lead screw is rotatably connected to the middle of the housing. Threaded sleeves are threaded onto the threads at both ends of the bidirectional lead screw. Connecting rods are rotatably connected to the threaded sleeves. The end of the connecting rod away from the threaded sleeve is rotatably connected to the hollow slider. An end ring is fixedly connected to one end of the housing. The end ring is provided with a locking screw for fixing the bidirectional lead screw. Grinding blocks are slidably connected inside each hollow slider. A top pressure spring is installed between the grinding block and the inner end face of the hollow slider.

[0016] As a further embodiment of the present invention: the drive assembly includes a motor, which is fixedly connected to the upper end of the mounting plate, and pulleys are installed at both the output end of the motor and one end of the hexagonal bushing, with a belt installed between the two pulleys.

[0017] As a further embodiment of the present invention: the pushing assembly includes a sliding rail, which is fixedly connected between two mounting plates. A threaded rod is provided above the sliding rail, and both ends of the threaded rod are rotatably connected to the mounting plates. A pushing block is slidably connected to the sliding rail, and the pushing block is threadedly connected to the threaded rod. A rotating sleeve is fixedly connected to the upper end of the pushing block, and the rotating sleeve is rotatably connected to a hexagonal shaft. A first gear is installed on the connecting shaft at one end of the hexagonal shaft sleeve and one end of the threaded rod, and the two first gears mesh with each other.

[0018] As a further embodiment of the present invention: the slag cleaning mechanism includes a rotating seat, which is fixedly connected to one end of the upper surface of the base plate near the receiving platform. A pin is rotatably connected inside the rotating seat, and a support frame is fixedly connected to the pin. A second gear is fixedly connected to one end of the pin. An L-shaped bracket is fixedly connected to one end of the support frame near the groove. Two sliding seats are fixedly connected to the upper surface of the base plate near the rotating seat. A first rack is provided between the two sliding seats. Limiting grooves that slide with the sliding seats are provided at both ends of the first rack. A second cylinder is fixedly connected to the upper surface of the base plate. A second piston rod is provided inside the second cylinder. The end of the second piston rod is connected to the first... A rack and pinion is fixedly connected, and a first cylinder is fixedly connected to the lower end of the mounting plate near the base plate. A first piston rod is slidably connected inside the first cylinder. A first connecting pipe connects the rodless chamber of the first cylinder and the rod chamber of the second cylinder. Hydraulic oil is filled in the rodless chamber of the first cylinder, the rod chamber of the second cylinder, and the first connecting pipe. A first vent hole is provided at the end of the second cylinder away from the second piston rod and at the end of the first cylinder near the first piston rod. A support plate is also fixedly connected to the upper surface of the base plate below the support bracket. A first return spring is also provided inside the rodless chamber of the first cylinder. A collection box for collecting rust is also provided below the L-shaped support bracket.

[0019] As a further embodiment of the present invention: the jacking mechanism includes two sliding boxes, which are fixedly connected to the upper surface of the base plate at a position below both sides of the support frame. Each sliding box is slidably connected to a lifting inclined block. A connecting shaft rotatably connects the two sliding boxes. An eccentric wheel is fixedly connected to the connecting shaft inside each sliding box. A tension spring is installed between the lower end of each lifting inclined block and the lower end surface inside the sliding box. A one-way gear is fixedly connected to one end of the connecting shaft. A sliding bottom block is fixedly connected to the upper surface of the base plate near the sliding boxes, and a sliding bottom block is slidably connected to... The device has a second rack, and a fourth cylinder is fixedly connected to the base plate. The fourth cylinder has a fourth piston rod inside, and one end of the fourth piston rod is fixedly connected to the second rack. A third cylinder is fixedly connected to the lower end of the mounting plate away from the base plate. The third cylinder has a third piston rod inside. A second connecting pipe connects the rodless chamber and the rodless chamber of the fourth cylinder. The rodless chamber, the rodless chamber of the fourth cylinder, and the second connecting pipe are all filled with hydraulic oil. A second return spring is provided in the rod chamber of the fourth cylinder. A first exhaust hole is opened on the end face of the rod chamber of the third and fourth cylinders.

[0020] As a further embodiment of the present invention: the side of the receiving platform near the rotating seat is an inclined surface, and a baffle is fixedly connected to the end of the receiving platform away from the rotating seat.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention uses a stepping mechanism to feed pipes in a stepping manner. When the pipe moves to the clamping mechanism, it is fixed by the clamping mechanism. Then, the rust removal mechanism grinds and removes rust from the inner wall of the pipe. After rust removal, the pipe moves to the slag removal mechanism, and then the pipe is pushed out to the receiving platform by the pipe jacking mechanism to complete the unloading. This enables automatic and continuous rust removal of pipes, which is suitable for batch pipe rust removal work. It avoids the problem of wasting a lot of time on loading and unloading, and greatly improves work efficiency.

[0023] 2. The present invention, through the setting of a bidirectional lead screw, connecting rod, and hollow slider, allows the position of the hollow slider to be adjusted during use. This enables the position of the hollow slider to be adjusted according to the diameter of the pipe, thereby making it applicable to pipes of different diameters within a certain range and greatly improving its application range.

[0024] 3. The present invention has a slag removal mechanism that can be tilted during operation to remove rust and iron filings generated during grinding in the pipe, so that no manual cleaning is required afterward, making it convenient to use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the structure on the other side of the present invention.

[0027] Figure 3 This is a schematic diagram of the stepping mechanism in this invention.

[0028] Figure 4 This is a schematic diagram of the bottom structure of the sliding base plate in this invention.

[0029] Figure 5 This is a schematic diagram of the clamping mechanism in this invention.

[0030] Figure 6 This is a schematic diagram of the rust removal mechanism in this invention.

[0031] Figure 7 This is a schematic diagram of the driving component in this invention.

[0032] Figure 8 This is a schematic diagram of the pushing component in this invention.

[0033] Figure 9 This is a schematic diagram of the internal structure of the rust removal head in this invention.

[0034] Figure 10 This is a schematic diagram of the slag removal mechanism in this invention.

[0035] Figure 11 This is a schematic diagram of the internal structure of the first cylinder and the second cylinder in this invention.

[0036] Figure 12 This is a schematic diagram of the pipe jacking mechanism in this invention.

[0037] Figure 13 This is a schematic diagram of the internal structure of the third and fourth cylinders in this invention.

[0038] Among them: 101, base plate; 102, baffle; 103, receiving platform; 104, trough plate; 105, support leg; 106, side base;

[0039] Rust removal mechanism; 201. Mounting plate; 202. Hexagonal shaft; 203. Hexagonal shaft sleeve;

[0040] Drive components; 211, motor; 212, belt; 213, pulley;

[0041] 220. Rust removal head; 221. Housing; 222. Grinding block; 223. Top pressure spring; 224. Hollow slider; 225. Locking screw; 226. End ring; 227. Connecting rod; 228. Threaded sleeve; 229. Double-acting lead screw;

[0042] 230. Pushing assembly; 231. Pushing block; 232. Rotating sleeve; 233. Threaded rod; 234. Sliding rail; 235. First gear;

[0043] 300. Slag removal mechanism; 301. Rotating seat; 302. L-shaped bracket; 303. Second gear; 304. Support bracket; 305. First cylinder body; 306. First piston rod; 307. First connecting pipe; 308. Second cylinder body; 309. Support plate; 310. Second piston rod; 311. Sliding seat; 312. First rack; 313. Limiting groove;

[0044] 400. Pipe jacking mechanism; 402. Second rack; 403. Sliding base block; 404. Third piston rod; 405. Third cylinder; 406. Second connecting pipe; 407. Fourth piston rod; 408. Fourth cylinder; 409. One-way gear; 410. Connecting shaft; 411. Lifting wedge block; 412. Sliding box; 413. Eccentric wheel; 414. Tension spring.

[0045] 500. Clamping mechanism; 501. Vertical plate; 502. Third gear; 503. Third rack; 504. First electric cylinder; 505. I-shaped slider; 506. Vertical groove; 507. Clamping arm;

[0046] 600. Stepping mechanism; 601. Sliding base plate; 602. V-groove plate; 603. Inverted U-shaped frame; 604. Bottom slide rail; 605. Second electric cylinder; 606. Sliding frame; 607. Third electric cylinder. Detailed Implementation

[0047] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Please see Figures 1-13In this embodiment of the invention, the rust removal equipment for the inner wall of oil and gas pipelines includes a base plate 101. A side base 106 is fixedly connected to one side of the base plate 101. A grooving plate 104 is provided above the base plate 101. A support leg 105 fixed to the base plate 101 is provided at the lower end of the grooving plate 104. Several V-shaped grooves for placing natural gas pipelines are opened on the grooving plate 104. A receiving platform 103 is provided on the other side of the base plate 101. A position on the base plate 101 below the grooving plate 104 is provided for pushing natural gas pipelines. The gas pipeline moves one V-groove at a time using a stepping mechanism 600; the receiving platform 103 has an inclined side near the rotating seat 301, and a baffle 102 is fixedly connected to the end of the receiving platform 103 away from the rotating seat 301. During operation, the baffle 102 can block the unloading pipeline to prevent it from rolling directly off the receiving platform 103. The stepping mechanism 600 can cooperate with the grooving plate 104 to move the pipeline, so that the pipeline on the grooving plate 104 moves one V-groove distance at a time.

[0049] Please see Figures 2-4 The stepping mechanism 600 includes a bottom slide rail 604, which is fixedly connected to the upper surface of the base plate 101. A sliding base plate 601 is slidably connected between the two bottom slide rails 604. An inverted U-shaped frame 603 is fixedly connected to both sides of the upper surface of the sliding base plate 601. A sliding frame 606 is slidably connected to each inverted U-shaped frame 603. A V-groove plate 602 that mates with the slotted plate 104 is fixedly connected between the upper ends of the sliding frames 606. A second electric cylinder 605 for driving the sliding frames 606 to rise and fall is provided in the middle of the inverted U-shaped frame 603. The base plate 101... A third electric cylinder 607 is also provided below the sliding base plate 601 to push the sliding base plate 601 to move along the bottom slide rail 604. When the pipe is moved, the second electric cylinder 605 pushes the sliding frame 606 to move upward. The upward movement of the sliding frame 606 drives the V-groove plate 602. The V-groove plate 602 lifts the pipe placed on the grooving plate 104. Then the third electric cylinder 607 drives the sliding base plate 601 to move, pushing the lifted pipe forward a distance of one V-groove. Then the second electric cylinder 605 resets and puts the pipe down, thereby realizing the step-by-step conveying of the pipe.

[0050] Please see Figure 5The base plate 101 has clamping mechanisms 500 on both sides for clamping natural gas pipelines. Each clamping mechanism 500 includes a vertical plate 501, which is fixedly connected to the base plate 101 at positions on both sides of the trough plate 104. Vertical grooves 506 are provided at both the upper and lower ends of each vertical plate 501. I-shaped sliders 505 are slidably connected within each vertical groove 506. Clamping arms 507 for clamping the pipeline are fixedly connected to each I-shaped slider 505. A third gear 502 is rotatably connected to the middle of the vertical plate 501. Two I-shaped sliders... Each block 505 is fixedly connected with a third rack 503, which meshes with both sides of the third gear 502. The lower end of the vertical plate 501 is also provided with a first electric cylinder 504 for pushing the third rack 503 to move up and down. When it is necessary to clamp the pipe, the first electric cylinder 504 pushes the third rack 503 on one side to move. The movement of the third rack 503 drives the third gear 502, causing the third rack 503 on the other side to move accordingly. This allows the two clamping arms 507 to move relative to or in opposite directions, thereby achieving the clamping and lowering of the pipe.

[0051] Please see Figures 6-9 The side base 106 is provided with a rust removal mechanism 200 for removing rust from the inner wall of the natural gas pipeline held by the clamping mechanism 500. The rust removal mechanism 200 includes a mounting plate 201, which is fixedly connected to both ends of the side base 106. A hexagonal bushing 203 is rotatably connected to the mounting plate 201 near the base plate 101. A hexagonal shaft 202 is slidably connected inside the hexagonal bushing 203. One end of the hexagonal shaft 202 is provided with a rust removal head 220 for grinding the inner wall of the natural gas pipeline. A drive assembly 210 for driving the hexagonal bushing 203 to rotate is provided on the mounting plate 201 above the hexagonal bushing 203. A drive assembly 210 for driving the hexagonal shaft 202 is also provided between the two mounting plates 201. The hexagonal bushing 203 has a sliding push assembly 230 inside; the drive assembly 210 includes a motor 211, which is fixedly connected to the upper end of the mounting plate 201. Both the output end of the motor 211 and one end of the hexagonal bushing 203 are equipped with pulleys 213, and a belt 212 is installed between the two pulleys 213. During operation, the motor 211 drives the belt 212 and pulleys 213 to rotate, which in turn drives the hexagonal bushing 203 to rotate. The rotation of the hexagonal bushing 203 drives the hexagonal shaft 202 to rotate, which in turn drives the rust removal head 220 to rotate. Then, the push assembly 230 moves the hexagonal shaft 202, causing the rust removal head 220 to extend into the pipe and polish the inner wall of the pipe, removing surface rust.

[0052] Please see Figure 9The rust removal head 220 includes a housing 221, which is fixedly connected to the end of the hexagonal shaft 202 away from the push block 231. Several hollow sliders 224 are slidably connected to the housing 221. A bidirectional lead screw 229 is rotatably connected to the middle of the housing 221. Threaded sleeves 228 are threaded onto the threads at both ends of the bidirectional lead screw 229. Connecting rods 227 are rotatably connected to the threaded sleeves 228. The end of the connecting rod 227 away from the threaded sleeves 228 is rotatably connected to the hollow sliders 224. An end ring 226 is fixedly connected to one end of the housing 221. Locking screws 225 for fixing the bidirectional lead screw 229 are provided on the end ring 226. The hollow sliders 224 slide within each other. A grinding block 222 is connected, and a top pressure spring 223 is installed between the grinding block 222 and the inner end face of the hollow slider 224. A hexagonal block can be installed at the end of the double-acting screw 229 for easy rotation with a wrench. During operation, the top pressure spring 223 is loosened first, and then the double-acting screw 229 is rotated. The rotation of the double-acting screw 229 can drive the two threaded sleeves 228 to move relative to each other or in opposite directions, which in turn can drive the connecting rod 227 to move. The rotation of the connecting rod 227 drives the hollow slider 224 to move, thereby adjusting the position of the grinding block 222. At the same time, the top pressure spring 223 provides the grinding block 222 with a certain retraction capability, and also allows the grinding block 222 to adhere to the inner wall of the pipe, ensuring the rust removal effect.

[0053] Please see Figure 8 The pushing assembly 230 includes a sliding rail 234, which is fixedly connected between two mounting plates 201. A threaded rod 233 is provided above the sliding rail 234, with both ends of the threaded rod 233 rotatably connected to the mounting plates 201. A pushing block 231 is slidably connected to the sliding rail 234, and the pushing block 231 is threadedly connected to the threaded rod 233. A rotating sleeve 232 is fixedly connected to the upper end of the pushing block 231, and the rotating sleeve 232 is rotatably connected to the hexagonal shaft 202. The connecting shafts at one end of the hexagonal bushing 203 and the other end of the threaded rod 233 are each equipped with a first gear 235. The two first gears 235 mesh with each other. During operation, the rotation of the hexagonal bushing 203 drives the first gear 235 to rotate, which in turn drives the threaded rod 233 to rotate. The rotation of the threaded rod 233 can drive the push block 231 to move along the sliding rail 234. The movement of the sliding rail 234 can drive the hexagonal shaft 202 to move, allowing the rust removal head 220 to extend into the pipe.

[0054] Please see Figures 10-11The base plate 101, located at one end of the drain plate 104, is also equipped with a slag removal mechanism 300 for discharging rust from the pipes. The slag removal mechanism 300 includes a rotating seat 301, which is fixedly connected to the upper surface of the base plate 101 near the receiving platform 103. A pin is rotatably connected inside the rotating seat 301, and a support frame 304 is fixedly connected to the pin. A second gear 303 is fixedly connected to one end of the pin. An L-shaped bracket 302 is fixedly connected to one end of the support frame 304 near the groove. Two sliding seats 311 are fixedly connected to the upper surface of the base plate 101 near the rotating seat 301. A first rack 312 is provided between the seats 311. The first rack 312 has limiting grooves 313 at both ends that are slidably connected to the sliding seats 311. A second cylinder 308 is fixedly connected to the upper surface of the base plate 101. A second piston rod 310 is provided inside the second cylinder 308. The end of the second piston rod 310 is fixedly connected to the first rack 312. A first cylinder 305 is fixedly connected to the lower end of the mounting plate 201 near the base plate 101. A first piston rod 306 is slidably connected inside the first cylinder 305. A first connecting pipe 307 connects the rodless chamber of the first cylinder 305 and the rod chamber of the second cylinder 308. Both the rod chamber of the second cylinder 308 and the first connecting pipe 307 are filled with hydraulic oil. The end of the second cylinder 308 away from the second piston rod 310 and the end of the first cylinder 305 near the first piston rod 306 are each provided with a first vent hole. A support plate 309 is fixedly connected to the upper surface of the base plate 101 below the support bracket 304. A first return spring is also provided inside the rodless chamber of the first cylinder 305. A collection box for collecting rust residue is also provided below the L-shaped support bracket 302. During operation, when the push block 231 drives the rust removal head 220 to extend into the pipe for grinding, the push block 231 will push the second piston rod 310 to move. The piston rod 306 moves, pushing the hydraulic oil in the first cylinder 305 into the rod chamber of the second cylinder 308. Then the second piston rod 310 retracts, which drives the first rack 312 to move. The movement of the first rack 312 drives the second gear 303 to rotate. The rotation of the second gear 303 drives the pin to rotate. The rotation of the pin drives the support bracket 304 to rotate 60 degrees. The rotation angle of the support bracket 304 can be controlled by controlling the extension length of the second piston rod 310 and the movement distance of the first rack 312. After the support bracket 304 rotates, the pipeline can be tilted, thereby expelling rust and debris from the pipeline.

[0055] Please see Figures 12-13Below the slag removal mechanism 300, there is also a pipe jacking mechanism 400 for transferring the cleaned pipe to the receiving platform 103. The pipe jacking mechanism 400 includes two sliding boxes 412, which are fixedly connected to the upper surface of the base plate 101 at the position below both sides of the support frame 304. Each sliding box 412 is slidably connected to a lifting inclined block 411. A connecting shaft 410 is rotatably connected between the two sliding boxes 412. An eccentric wheel 413 is fixedly connected to the connecting shaft 410 at the position inside the sliding box 412. A [missing information - likely a device or mechanism] is installed between the lower end of the lifting inclined block 411 and the lower end surface inside the sliding box 412. A tension spring 414 is provided. One end of the connecting shaft 410 is fixedly connected to a one-way gear 409. A sliding block 403 is fixedly connected to the upper surface of the base plate 101 near the sliding box 412. A second rack 402 is slidably connected to the sliding block 403. A fourth cylinder 408 is also fixedly connected to the base plate 101. A fourth piston rod 407 is provided inside the fourth cylinder 408. One end of the fourth piston rod 407 is fixedly connected to the second rack 402. A third cylinder 405 is fixedly connected to the lower end of the mounting plate 201 away from the base plate 101. A third piston rod 404 is provided inside the third cylinder 405. A second connecting pipe 406 connects the rodless chamber of the third cylinder 405 and the rodless chamber of the fourth cylinder 408. Both the rodless chambers of the third cylinder 405 and the fourth cylinder 408, as well as the second connecting pipe 406, are filled with hydraulic oil. A second return spring is installed in the rod chamber of the fourth cylinder 408. A first vent hole is opened on the end face of the rod chambers of both the third cylinder 405 and the fourth cylinder 408. During operation, when the push block 231 resets, it squeezes the third piston rod 404, which in turn squeezes the oil in the third cylinder 405 into the fourth cylinder 408. Then, the fourth piston rod 407 drives the second tooth... The second rack 402 moves, and the distance that the second rack 402 moves causes the one-way gear 409 to rotate one revolution. One revolution of the one-way gear 409 can cause the eccentric wheel 413 to rotate one revolution along the connecting shaft 410. One revolution of the connecting shaft 410 can lift the lifting inclined block 411 and then lower it, thereby pushing out the cleaned pipe on the support frame 304 and causing the pipe to roll down onto the receiving platform 103. When the fourth piston rod 407 is reset under the action of the second reset spring, the second rack 402 and the one-way gear 409 cooperate. Since the one-way gear 409 is a one-way transmission, the rotation of the one-way gear 409 will not drive the connecting shaft 410 to rotate at this time.

[0056] The working principle of this invention is as follows: During operation, the pipe is placed into the V-shaped groove on the trough plate 104. Then, the stepping mechanism 600 gradually moves the pipe towards the rust removal mechanism 200. When the pipe reaches the corresponding position of the rust removal mechanism 200, the clamping mechanism 500 clamps the pipe. After clamping, the motor 211 drives the belt 212 and pulley 213 to rotate, which in turn drives the hexagonal bushing 203 to rotate. The rotation of the hexagonal bushing 203 drives the hexagonal shaft 202 to rotate, and the rotation of the hexagonal shaft 202 drives the rust removal head 220 to rotate. Then, the pushing component 230 drives the hexagonal shaft 202 to move, causing the rust removal head 220 to extend. The pipe is inserted into the ground, and the inner wall of the pipe is ground to remove surface rust. After grinding, the clamping mechanism 500 lowers the pipe. During the grinding process, the pusher block 231 first presses against the first piston rod 306, causing the first piston rod 306 to move and push the hydraulic oil in the first cylinder 305 into the rod chamber of the second cylinder 308. Then, the second piston rod 310 retracts, which drives the first rack 312 to move. The movement of the first rack 312 drives the second gear 303 to rotate, which in turn drives the pin to rotate. The rotation of the pin causes the support bracket 304 to rotate 60 degrees. After the bracket 304 flips, the pipe can be tilted, allowing rust and debris to be discharged. Simultaneously, after grinding, the drive assembly 210 reverses, and the push block 231 resets. During this movement, the push block 231 first moves away from the first piston rod 306, which resets under the action of the first spring. At the same time, the support bracket 304 resets under its own weight and the retracting force of the second piston rod 310. When the push block 231 returns to its starting position, it presses against the third piston rod 404. The third piston rod 404 forces the oil in the third cylinder 405 into the fourth cylinder 408, and then the fourth piston rod 40... 7 drives the second rack 402 to move. The distance the second rack 402 moves drives the one-way gear 409 to rotate one revolution. One revolution of the one-way gear 409 can drive the eccentric wheel 413 to rotate one revolution along the connecting shaft 410. One revolution of the connecting shaft 410 can lift the lifting inclined block 411 and then lower it, thereby pushing out the cleaned pipe on the support frame 304 and making the pipe roll down to the receiving table 103. Then the stepping mechanism 600 performs stepping conveying of the pipe again, so that the cleaned pipe enters the slag removal mechanism 300, while the uncleaned pipe enters the clamping mechanism 500. This process is repeated to achieve continuous rust removal of the pipe.

[0057] The circuit control part in this solution can be implemented by those skilled in the art with simple programming, and is common knowledge in the field. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Although this specification describes embodiments, not every embodiment contains only one technical solution. This method of description is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Rust removal equipment for the inner wall of oil and gas pipelines, including a base plate (101), a side base (106) fixedly connected to one side of the base plate (101), a grooving plate (104) provided above the base plate (101), a support leg (105) fixed to the base plate (101) at the lower end of the grooving plate (104), a plurality of V-shaped grooves for placing natural gas pipelines are opened on the grooving plate (104), and a receiving platform (103) is provided on the other side of the base plate (101). Its features are: The base plate (101) is provided with a stepping mechanism (600) located below the channel plate (104) for pushing the pipe to move one V-shaped groove each time. The base plate (101) is provided with clamping mechanisms (500) on both sides for clamping the natural gas pipeline. The side base (106) is provided with a rust removal mechanism (200) for removing rust from the inner wall of the pipe held by the clamping mechanism (500). The rust removal mechanism (200) includes a mounting plate (201), which is fixedly connected to both ends of the side base (106). A hexagonal bushing (203) is rotatably connected to the mounting plate (201) near the bottom plate (101). A hexagonal shaft (202) is slidably connected inside the hexagonal bushing (203). One end of the hexagonal shaft (202) is provided with a rust removal head (220) for grinding the inner wall of the natural gas pipeline. The mounting plate (201) is provided with a drive assembly (210) for driving the hexagonal bushing (203) to rotate at the position above the hexagonal bushing (203). A push assembly (230) for driving the hexagonal shaft (202) to slide inside the hexagonal bushing (203) is also provided between the two mounting plates (201). The bottom plate (101) is also provided with a slag removal mechanism (300) at one end of the drain plate (104) for discharging the rust cleaned from the pipe. Below the slag removal mechanism (300) is a pipe jacking mechanism (400) for transferring the cleaned pipe to the receiving platform (103). The pushing assembly (230) includes a sliding rail (234), which is fixedly connected between two mounting plates (201). A threaded rod (233) is provided above the sliding rail (234), and both ends of the threaded rod (233) are rotatably connected to the mounting plates (201). A pushing block (231) is slidably connected on the sliding rail (234), and the pushing block (231) is threadedly connected to the threaded rod (233). A rotating sleeve (232) is fixedly connected to the upper end of the pushing block (231), and the rotating sleeve (232) is rotatably connected to a hexagonal shaft (202). A first gear (235) is installed on the connecting shaft at one end of the hexagonal shaft sleeve (203) and one end of the threaded rod (233), and the two first gears (235) mesh with each other. The slag removal mechanism (300) includes a rotating seat (301), which is fixedly connected to one end of the upper surface of the base plate (101) near the receiving platform (103). A pin is rotatably connected inside the rotating seat (301), and a support frame (304) is fixedly connected to the pin. A second gear (303) is fixedly connected to one end of the pin. An L-shaped bracket (302) is fixedly connected to one end of the support frame (304) near the groove. The base plate (101) has... Two sliding seats (311) are fixedly connected to the end face near the rotating seat (301). A first rack (312) is provided between the two sliding seats (311). The two ends of the first rack (312) are provided with limiting grooves (313) that are slidably connected to the sliding seats (311). A second cylinder (308) is fixedly connected to the upper end face of the base plate (101). A second piston rod (310) is provided inside the second cylinder (308). The end of the second piston rod (310) is connected to the first rack (312). A first cylinder (305) is fixedly connected to the lower end of the mounting plate (201) near the base plate (101). A first piston rod (306) is slidably connected inside the first cylinder (305). A first connecting pipe (307) connects the rodless chamber of the first cylinder (305) and the rod chamber of the second cylinder (308). The rodless chamber of the first cylinder (305), the rod chamber of the second cylinder (308), and the first connecting pipe (307) are all filled with [missing information]. Hydraulic oil, the second cylinder (308) is provided with a first exhaust hole at the end away from the second piston rod (310) and the first cylinder (305) is provided with a first exhaust hole at the end near the first piston rod (306), the upper end of the base plate (101) is also fixedly connected to a support plate (309) at the position below the support bracket (304), the rodless cavity of the first cylinder (305) is also provided with a first return spring, and the L-shaped support bracket (302) is also provided with a collection box for collecting rust residue below it; The jacking mechanism (400) includes two sliding boxes (412). The sliding boxes (412) are fixedly connected to the upper surface of the base plate (101) at the position below both sides of the support frame (304). Each sliding box (412) is slidably connected to a lifting inclined block (411). A connecting shaft (410) is rotatably connected between the two sliding boxes (412). An eccentric wheel (413) is fixedly connected to the position of the connecting shaft (410) inside the sliding box (412). A tension spring (414) is installed between the lower end of the lifting inclined block (411) and the lower end surface inside the sliding box (412). A one-way gear (409) is fixedly connected to one end of the connecting shaft (410). A sliding bottom block (403) is fixedly connected to the upper surface of the base plate (101) near the sliding box (412). A second rack (402) is slidably connected to the sliding bottom block (403). A fourth cylinder (408) is fixedly connected to the base plate (101). A fourth piston rod (407) is provided inside the fourth cylinder (408). One end of the fourth piston rod (407) is fixedly connected to the second rack (402). A third cylinder (405) is fixedly connected to the lower end of the mounting plate (201) away from the base plate (101). A third piston rod (404) is provided inside the third cylinder (405). A second connecting pipe (406) is connected between the rodless chamber of the third cylinder (405) and the rodless chamber of the fourth cylinder (408). Hydraulic oil is filled in the rodless chamber of the third cylinder (405), the rodless chamber of the fourth cylinder (408), and the second connecting pipe (406). A second return spring is provided in the rod chamber of the fourth cylinder (408). A first exhaust hole is opened on the end face of the rod chamber of the third cylinder (405) and the fourth cylinder (408).

2. The rust removal equipment for the inner wall of oil and gas pipelines according to claim 1, characterized in that, The stepping mechanism (600) includes a bottom slide rail (604), which is fixedly connected to the upper surface of the base plate (101). A sliding base plate (601) is slidably connected between the two bottom slide rails (604). An inverted U-shaped frame (603) is fixedly connected to both sides of the upper surface of the sliding base plate (601). A sliding frame (606) is slidably connected to each of the inverted U-shaped frames (603). A V-groove plate (602) that cooperates with the slotted plate (104) is fixedly connected between the upper ends of the sliding frames (606). A second electric cylinder (605) for driving the sliding frame (606) to lift and lower is provided in the middle of the inverted U-shaped frame (603). A third electric cylinder (607) for pushing the sliding base plate (601) to move along the bottom slide rail (604) is also provided at the position below the sliding base plate (601) on the base plate (101).

3. The rust removal equipment for the inner wall of oil and gas pipelines according to claim 2, characterized in that, The clamping mechanism (500) includes a vertical plate (501), which is fixedly connected to the base plate (101) on both sides of the slotted plate (104). The vertical plate (501) has vertical grooves (506) at both the upper and lower ends. I-shaped sliders (505) are slidably connected in the vertical grooves (506). Clamping arms (507) for clamping the pipe are fixedly connected to the I-shaped sliders (505). A third gear (502) is rotatably connected in the middle of the vertical plate (501). A third rack (503) is fixedly connected to both I-shaped sliders (505). The third rack (503) meshes with both sides of the third gear (502). The lower end of the vertical plate (501) is also provided with a first electric cylinder (504) for pushing the third rack (503) to move up and down.

4. The rust removal equipment for the inner wall of oil and gas pipelines according to claim 3, characterized in that, The rust removal head (220) includes a housing (221), which is fixedly connected to one end of a hexagonal shaft (202). Several hollow sliders (224) are slidably connected to the housing (221). A bidirectional lead screw (229) is rotatably connected to the middle of the housing (221). Threaded sleeves (228) are threaded onto the threads at both ends of the bidirectional lead screw (229). Connecting rods (227) are rotatably connected to the threaded sleeves (228). (227) The end away from the threaded sleeve (228) is rotatably connected to the hollow slider (224). One end of the housing (221) is fixedly connected to an end ring (226). The end ring (226) is provided with a locking screw (225) for fixing the bidirectional lead screw (229). Grinding blocks (222) are slidably connected inside the hollow slider (224). A top pressure spring (223) is installed between the grinding block (222) and the inner end face of the hollow slider (224).

5. The rust removal equipment for the inner wall of oil and gas pipelines according to claim 4, characterized in that, The drive assembly (210) includes a motor (211), which is fixedly connected to the upper end of the mounting plate (201). The output end of the motor (211) and one end of the hexagonal bushing (203) are both equipped with pulleys (213), and a belt (212) is installed between the two pulleys (213).

6. The rust removal equipment for the inner wall of oil and gas pipelines according to claim 5, characterized in that, The receiving platform (103) has an inclined side near the rotating seat (301), and a baffle (102) is fixedly connected to the end of the receiving platform (103) away from the rotating seat (301).

7. A method of using the rust removal equipment for the inner wall of an oil and gas pipeline as described in claim 6, characterized in that, Includes the following steps: Step 1: During operation, the pipe is placed in the V-groove on the grooving plate (104), and then the stepping mechanism (600) moves the pipe gradually toward the rust removal mechanism (200). When the pipe moves to the position opposite to the rust removal mechanism (200), the clamping mechanism (500) clamps the pipe. After clamping, the motor (211) drives the belt (212) and pulley (213) to rotate, which in turn drives the hexagonal bushing (203) to rotate. The rotation of the hexagonal bushing (203) drives the hexagonal shaft (202) to rotate. The rotation of the hexagonal shaft (202) drives the rust removal head (220) to rotate. Then the pushing component (230) drives the hexagonal shaft (202) to move, so that the rust removal head (220) extends into the pipe to polish the inner wall of the pipe and remove the surface rust. Step 2: After grinding, the clamping mechanism (500) lowers the pipe. During the grinding process, the push block (231) will first squeeze the first piston rod (306). The first piston rod (306) moves and pushes the hydraulic oil in the first cylinder (305) into the rod chamber of the second cylinder (308). Then the second piston rod (310) retracts. The retraction of the second piston rod (310) drives the first rack (312) to move. The movement of the first rack (312) can drive the second gear (303) to rotate. The rotation of the second gear (303) drives the pin to rotate. The rotation of the pin drives the support frame (304) to rotate 60 degrees. After the support frame (304) rotates, the pipe can be tilted, and the rust and debris in the pipe can be discharged. Step 3: Simultaneously, after grinding is completed, the drive assembly (210) reverses, and the push block (231) performs a reset movement. During the movement, the push block (231) will first move away from the first piston rod (306). The first piston rod (306) resets under the action of the first spring. At the same time, the support bracket (304) resets under its own weight and the retraction force of the reset second piston rod (310). When the push block (231) returns to its original position, it will press against the third piston rod (404). The third piston rod (404) squeezes the oil in the third cylinder (405) into the fourth cylinder (408). Then, the fourth piston rod (407) drives the second rack (402) to move forward. As the second rack (402) moves, the distance it moves drives the one-way gear (409) to rotate once. The rotation of the one-way gear (409) once can drive the eccentric wheel (413) to rotate once along the connecting shaft (410). The connecting shaft (410) can lift the lifting block (411) once and then lower it, thereby pushing the cleaned pipe out of the support frame (304) and making the pipe roll down to the receiving platform (103). Then the stepping mechanism (600) will step and convey the pipe again, so that the cleaned pipe enters the slag removal mechanism (300), while the uncleaned pipe enters the clamping mechanism (500). This process is repeated to achieve continuous rust removal of the pipe.

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