An oil pipe wall crawling device

Abstract

The utility model belongs to the pipeline cleaning equipment technical field that petroleum, chemical industry adopts belongs to, disclose a kind of petroleum pipe wall inside crawling device, comprising the same structure of crawling device upper section and crawling device lower section group, the crawling device upper section includes crawling support, the upper end of the crawling support is fixedly connected with upper cover, the lower end of the crawling support is fixedly connected with bottom plate, three sets of telescopic wall claw mechanism of being located at the same height are equipped on the side wall of the crawling support, the screw rod that the middle axis in the crawling support coincides with is equipped in the crawling support.This application, driver driving screw rod rotation is located on the upper cover and is connected with the top end of screw rod, and then drive the lifting of the connecting block on screw rod, the hinge point position of connecting block and connecting rod changes, and piston is hinged to the other end of connecting rod and moves along the radial direction of crawling support, wall claw is telescopic relative to crawling support, therefore, when pipe wall crawling device needs to move, wall claw can be retracted along the radial direction of crawling support.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipeline cleaning equipment used in the petroleum and chemical industries, and specifically relates to a crawling device inside the oil pipe wall. Background Technology

[0002] In the petroleum industry and related fields involving pipeline maintenance, steel risers are widely used in various fluid transportation scenarios. Over time, oil and impurities easily accumulate on the inner walls of steel risers, affecting normal pipeline operation and fluid transportation efficiency. Therefore, regular cleaning of the inner walls of steel risers is essential.

[0003] In actual steel riser cleaning, the degree and accumulation of dirt in different parts often vary, requiring cleaning equipment to remain in specific locations for extended periods to perform targeted and thorough cleaning of heavily soiled areas. However, existing equipment cannot meet this need. When encountering areas requiring intensive cleaning, it cannot stop and operate continuously, and can only pass through quickly, resulting in incomplete removal of dirt from these areas. Over time, dirt will continuously accumulate on the inner wall of the steel riser, not only reducing pipeline transport efficiency and increasing energy consumption, but also causing serious problems such as pipe blockage and corrosion, affecting the pipeline's service life and safety. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an oil pipe wall crawling device that can stop at any position on the inner wall of a steel riser so that a pipe wall cleaning device connected to it can perform targeted cleaning of the inner wall of the steel riser.

[0005] The technical solution of this utility model is as follows: a crawling device inside an oil pipe wall, comprising an upper section and a lower section of a crawling device with identical structures. The upper section of the crawling device includes a crawling bracket, with a top cover fixedly connected to the upper end of the crawling bracket and a base plate fixedly connected to the lower end of the crawling bracket. Three sets of retractable wall claw mechanisms at the same height are provided on the side wall of the crawling bracket. A lead screw with its central axis coinciding with the central axis of the crawling bracket is provided inside the crawling bracket. A driver is fixedly connected to the top of the top cover. The output end of the driver is connected to the top of the lead screw. A connecting block is sleeved on the lead screw. The three sets of retractable wall claw mechanisms are respectively connected to the connecting block. The driver drives the lead screw to rotate, and the connecting block moves up and down on the lead screw.

[0006] Preferably, the driver is a servo motor.

[0007] Preferably, the retractable wall claw mechanism includes a guide sleeve, which is vertically disposed on the side wall of the crawling bracket. A wall claw is movably disposed inside the guide sleeve. An axial blind hole is provided in the inner end of the wall claw. A piston is movably disposed in the axial blind hole. At least one spring is provided between the inner surface of the piston and the bottom surface of the axial blind hole. A connecting rod is hinged to the outer surface of the piston. The end of the connecting rod away from the piston is hinged to a connecting block.

[0008] Preferably, the outer end of the guide sleeve is fixed inside the side wall of the crawling bracket.

[0009] Preferably, the wall claw can extend and retract along the guide sleeve axially, the outer end of the wall claw is located outside the crawling bracket, and the end face of the outer end of the wall claw is in contact with the inner wall of the steel riser to be cleaned.

[0010] Preferably, the outer end of the guide sleeve is provided with an inner retaining ring, and the outer wall of the inner end of the wall claw is provided with an outer retaining ring that cooperates with the inner retaining ring.

[0011] Preferably, the upper cover of the lower section of the crawling device is connected to the base plate of the upper section of the crawling device.

[0012] Preferably, the upper cover of the upper section of the crawling device is provided with a lifting ring and an aviation connector.

[0013] Preferably, a pipe wall cleaning device is provided on the lower end face of the lower section of the crawling device.

[0014] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0015] In this application, a driver located on the upper cover and connected to the top of the lead screw drives the lead screw to rotate, thereby causing the connecting block located on the lead screw to rise and fall. The position of the hinge point between the connecting block and the connecting rod changes accordingly, and the piston hinged to the other end of the connecting rod moves radially along the crawling bracket. The wall claw is retractable relative to the crawling bracket. Therefore, when the pipe wall crawling device needs to move, the wall claw can retract radially along the crawling bracket, thereby stopping at any position on the inner wall of the steel riser, so that the pipe wall cleaning device connected to it can perform fixed-point cleaning on the inner wall of the steel riser. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top view of the structure of this utility model;

[0018] Figure 2This is a cross-sectional view of the upper section of the pipe wall crawling device of this utility model;

[0019] Figure 3 A 3D schematic diagram of a steel riser cleaning equipment for oilfields;

[0020] Figure 4 This is a three-dimensional schematic diagram of a partial structure of a steel riser cleaning equipment for oilfields.

[0021] Attached Figure

[0022] 1. Cabinet; 2. Extending arm; 3. Column; 4. Frame; 5. Winding servo motor; 6. Reducer; 7. Wire winding machine; 8. Wire rope drum; 9. Wire rope pulley; 10. Wire pulley; 11. Wire rope; 12. Cable; 13. Pipe wall crawling device; 1301. Crawling bracket; 1302. Top cover; 1303. Base plate; 1304. Lead screw; 1305. Driver; 1306. Connecting block; 1307. Guide sleeve; 13071. Inner retaining ring; 1308. Wall claw; 13081. Axial blind hole; 13082. Outer retaining ring; 1309. Piston; 1310. Spring; 1311. Connecting rod; 1312. Lifting ring; 1313. Aviation connector; 14. Pipe wall cleaning device. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] like Figure 1 and Figure 2 As shown, an oil pipe wall crawling device includes an upper section and a lower section of the crawling device with identical structures. The upper section of the crawling device includes a crawling bracket 1301, with a top cover 1302 fixedly connected to the upper end of the crawling bracket 1301 and a base plate 1303 fixedly connected to the lower end of the crawling bracket 1301. Three sets of retractable wall claw mechanisms at the same height are provided on the side wall of the crawling bracket 1301. A lead screw 1304 with its central axis coinciding with the central axis of the crawling bracket 1301 is provided inside the crawling bracket 1301. A driver 1305 is fixedly connected to the top of the lead screw 1304, and a connecting block 1306 is sleeved on the lead screw 1304. The three sets of retractable wall claw mechanisms are respectively connected to the connecting block 1306. The driver 1305 drives the lead screw 1304 to rotate, and the connecting block 1306 moves up and down on the lead screw 1304. The driver 1305 is a servo motor.

[0025] Here, the retractable wall claw mechanism includes a guide sleeve 1307, which is vertically mounted on the side wall of the crawling bracket 1301. A wall claw 1308 is movably mounted inside the guide sleeve 1307. An axial blind hole 13081 is provided in the inner end of the wall claw 1308. A piston 1309 is movably mounted in the axial blind hole 13081. At least one spring 1310 is provided between the inner surface of the piston 1309 and the bottom surface of the axial blind hole 13081. A connecting rod 1311 is hinged to the outer surface of the piston 1309. The end of the connecting rod 1311 away from the piston 1309 is hinged to the connecting block 1306.

[0026] The outer end of the guide sleeve 1307 is fixed inside the side wall of the crawling bracket 1301. The wall claw 1308 can extend and retract axially along the guide sleeve 1307. The outer end of the wall claw 1308 is located outside the crawling bracket 1301, and the end face of the outer end of the wall claw 1308 is in contact with the inner wall of the steel riser to be cleaned. Therefore, the shape of the outer end face of the wall claw 1308 is adapted to the shape of the inner wall of the steel riser. Here, the inner end of the wall claw 1308 refers to the end located inside the guide sleeve 1307, and the outer end of the wall claw 1308 refers to the end located outside the crawling bracket 1301.

[0027] In this embodiment, in order to make the extension and retraction process of the wall claw 1308 more stable, two springs 1310 are provided between the inner surface of the piston 1309 and the bottom surface of the axial blind hole 13081; an inner retaining ring 13071 is provided in the outer end of the guide sleeve 1307, and an outer retaining ring 13082 that cooperates with the inner retaining ring 13071 is provided on the outer wall of the inner end of the wall claw 1308 to prevent the wall claw 1308 from disengaging from the guide sleeve 1307.

[0028] The upper cover of the lower section of the crawling device is connected to the base plate of the upper section of the crawling device. The upper cover 1302 of the upper section of the crawling device is provided with a lifting ring 1312 and an aviation connector 1313. The lifting ring 1312 is used to connect to the wire rope 11 from the suspension rope device, and the aviation connector 1313 is used to connect to the cable 12.

[0029] In summary, the driver 1305, located on the upper cover 1302 and connected to the top of the lead screw 1304, drives the lead screw 1304 to rotate, thereby causing the connecting block 1306 on the lead screw 1304 to rise and fall. The hinge point position between the connecting block 1306 and the connecting rod 1311 changes accordingly. The piston 1309, which is hinged to the other end of the connecting rod 1311, moves radially along the crawling bracket 1301. The wall claw 1308 is retractable relative to the crawling bracket 1301. Therefore, when the pipe wall crawling device needs to move, the wall claw 1308 can retract radially along the crawling bracket 1301, and can then stop at any position on the inner wall of the steel riser so that the pipe wall cleaning device connected to it can perform targeted cleaning on the inner wall of the steel riser.

[0030] like Figure 3 and Figure 4As shown, a steel riser cleaning device includes a cabinet 1 and a suspension rope device mounted on the cabinet 1. A pipe wall crawling device 13 is connected to the suspension rope device, and a pipe wall cleaning device 14 is provided on the lower end face of the lower section of the pipe wall crawling device 13.

[0031] Two parallel extension arms 2 are fixedly connected to the front and rear surfaces of the cabinet 1 and extend beyond one side of the cabinet 1. Each extension arm 2 has a column 3 fixedly connected to its free end, which is perpendicular to the extension arm 2.

[0032] The hoisting device includes a frame 4 fixed to the upper surface of the cabinet 1, a winding servo motor 5, a reducer 6, a wire rope winding machine 7, a wire rope drum 8, wire rope pulleys 9 and wire pulleys 10 mounted on the frame 4. The output end of the winding servo motor 5 is connected to the input end of the reducer 6, and the wire rope drum 8 is connected to the output end of the reducer 6. The wire rope 11 from the wire rope drum 8 passes through the wire rope pulley 9 and is connected to the pipe wall crawling device 13. The cable 12 from the wire rope winding machine 7 passes through the wire pulley 10 and is connected to the pipe wall crawling device 13. Generally, two wire ropes 11 are used, one for hoisting and one as a spare.

[0033] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crawling device for the inner wall of an oil pipe, comprising an upper section and a lower section of a crawling device with identical structures, characterized in that, The upper section of the crawling device includes a crawling bracket, with a top cover fixedly connected to the upper end of the crawling bracket and a base plate fixedly connected to the lower end of the crawling bracket. Three sets of retractable wall claw mechanisms at the same height are provided on the side wall of the crawling bracket. A lead screw with its central axis coinciding with the central axis of the crawling bracket is provided inside the crawling bracket. A driver is fixedly connected to the top cover, and the output end of the driver is connected to the top of the lead screw. A connecting block is sleeved on the lead screw, and the three sets of retractable wall claw mechanisms are respectively connected to the connecting block. The driver drives the lead screw to rotate, and the connecting block moves up and down on the lead screw.

2. The oil pipe wall crawling device as described in claim 1, characterized in that, The driver is a servo motor.

3. The oil pipe wall crawling device as described in claim 1, characterized in that, The retractable wall claw mechanism includes a guide sleeve, which is vertically disposed on the side wall of the crawling bracket. A wall claw is movably disposed inside the guide sleeve. An axial blind hole is provided in the inner end of the wall claw. A piston is movably disposed in the axial blind hole. At least one spring is provided between the inner surface of the piston and the bottom surface of the axial blind hole. A connecting rod is hinged to the outer surface of the piston. The end of the connecting rod away from the piston is hinged to a connecting block.

4. The oil pipe wall crawling device as described in claim 3, characterized in that, The outer end of the guide sleeve is fixed inside the side wall of the crawling support.

5. The oil pipe wall crawling device as described in claim 4, characterized in that, The wall claw can extend and retract along the guide sleeve axially. The outer end of the wall claw is located outside the crawling bracket, and the end face of the outer end of the wall claw is in contact with the inner wall of the steel riser to be cleaned.

6. The oil pipe wall crawling device as described in claim 5, characterized in that, The outer end of the guide sleeve is provided with an inner retaining ring, and the outer wall of the inner end of the wall claw is provided with an outer retaining ring that cooperates with the inner retaining ring.

7. The oil pipe wall crawling device as described in claim 1, characterized in that, The upper cover of the lower section of the crawling device is connected to the base plate of the upper section of the crawling device.

8. The oil pipe wall crawling device as described in claim 7, characterized in that, The upper cover of the crawling device is equipped with a lifting ring and an aviation connector.

9. The oil pipe wall crawling device as described in claim 8, characterized in that, The lower end face of the lower section of the crawling device is equipped with a pipe wall cleaning device.

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