Device for testing corrosion resistance of metal pipe

Abstract

The invention belongs to the technical field of metal pipe testing, and discloses a metal pipe corrosion resistance testing device which comprises a mounting frame, a mounting plate is fixedly connected to the inner wall of the mounting frame, an air cylinder is fixedly connected to the inner wall of the mounting plate, a fixing frame is fixedly connected to the output end of the air cylinder, and a fixing rod is fixedly connected to the inner wall of the fixing frame. A fixing seat is fixedly connected to the outer wall of the fixing rod, a supporting plate is fixedly connected to the outer wall of the fixing seat, a third motor is fixedly connected to the outer wall of the supporting plate, and a worm is fixedly connected to the output end of the third motor. An electric sliding rail drives a pipeline to move, so that the pipeline moves to the position above a liquid containing cylinder, a third motor drives a worm to rotate, the worm drives a worm wheel to rotate, the worm wheel drives a driving wheel to rotate through an output shaft, the driving wheel drives a rubber sleeve to rotate, the rubber sleeve drives a metal pipe to move up and down, and stable movement of the metal pipe is achieved; the metal tube is prevented from colliding with the outer wall of the glass container.

Description

Technical Field

[0001] The invention relates to the field of metal pipe testing, and more specifically to a metal pipe corrosion resistance testing device. Background Art

[0002] Oil casing, especially petroleum casing, is a steel pipe used to support the well wall of oil and gas wells to ensure the smooth progress of the drilling process and the normal operation of the entire oil well after completion. As the development of oil and gas fields gradually shifts to more demanding environments, the development of high-sulfur oil and gas fields continues to increase, and the number of sulfur resistance tests on oil casing materials has also increased. When oil casing works in a corrosive environment such as hydrogen sulfide, various forms of corrosion may occur, such as hydrogen induced cracking (HIC), sulfide stress cracking (SSC), stress-directed hydrogen induced cracking (SOHIC), etc. These corrosion phenomena will seriously damage the performance of the oil casing and even cause it to fail, thereby affecting the normal operation and safety of the oil well.

[0003] The corrosion resistance test can evaluate the durability and reliability of oil casing in a specific corrosive environment. In the actual operation of the existing pipe corrosion resistance test device, the operator needs to place the metal pipe sample in a glass container filled with a corrosive solution and carefully take out the metal pipe sample for testing after a specific period of time. However, when placing and picking up the metal pipe sample, it is necessary to be extremely careful to avoid collision between the metal pipe and the glass container, causing damage to the glass container, which increases the difficulty of the test. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a metal pipe corrosion resistance test device, which drives the metal pipe to move up and down through a rubber sleeve to achieve stable movement of the metal pipe and avoid collision between the metal pipe and the outer wall of the glass container.

[0005] The technical solution of the present invention is: a metal pipe corrosion resistance testing device, comprising a mounting frame, the inner wall of the mounting frame is fixedly connected to a mounting plate, the inner wall of the mounting plate is fixedly connected to a cylinder, the output end of the cylinder is fixedly connected to a fixing frame, the inner wall of the fixing frame is fixedly connected to a fixing rod, the outer wall of the fixing rod is fixedly connected to a fixing seat, the outer wall of the fixing seat is fixedly connected to a support plate, the outer wall of the support plate is fixedly connected to a third motor, the output end of the third motor is fixedly connected to a worm, the end of the worm is rotatably connected to the support plate, the inner wall of the fixing seat is rotatably connected to an output shaft, the end of the output shaft passes through the fixing seat and extends to its outside, the circumferential outer wall of the output shaft is fixedly connected to a worm wheel, the worm wheel meshes with the worm, the circumferential outer wall of the output shaft is fixedly connected to a driving wheel, the outer wall of the driving wheel is fixedly connected to a rubber sleeve, and the outer wall of the rubber sleeve is provided with a plurality of anti-slip grooves.

[0006] Preferably, it also includes a mounting seat, and a liquid container is fixedly connected to the top of the mounting seat.

[0007] Preferably, an electric slide rail is fixedly connected to the outer wall of the mounting seat, and a sliding part is installed on the top of the electric slide rail.

[0008] Preferably, the top of the sliding part is fixedly connected to a support frame, the outer wall of the support frame is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a threaded rod, the top of the threaded rod is rotatably connected to the support frame, and the threaded rod passes through the mounting frame and is threadedly connected thereto.

[0009] Preferably, a limiting plate is fixedly connected to the outer wall of the mounting frame, a limiting hole is provided on the top of the supporting frame, and an end of the limiting plate passes through the limiting hole and is slidably connected thereto.

[0010] Preferably, two guide rails are fixedly connected to the inner wall of the mounting frame, and the inner walls of the guide rails are slidably connected to sliders, and the sliders are fixedly connected to the fixing frame respectively.

[0011] Preferably, the top and bottom of the mounting frame are fixedly connected to a base, the outer wall of the base is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a drive shaft, and the outer wall of the drive shaft is fixedly connected to a gear.

[0012] Preferably, two fixed sleeves are fixedly connected to the end of the mounting frame, the inner walls of the fixed sleeves are rotatably connected to rotating sleeves, the circumferential outer walls of the rotating sleeves are fixedly connected to connecting sleeves, the circumferential outer walls of the connecting sleeves are fixedly connected to gear rings, and the gear rings are meshed with gears.

[0013] Preferably, the circumferential outer wall of the rotating sleeve is slidably connected to a plurality of connecting rods, the ends of the connecting rods pass through the rotating sleeve and extend to the inner side thereof, the ends of the connecting rods are fixedly connected to hinge seats, the inner walls of the hinge seats are rotatably connected to rollers, the circumferential outer walls of the connecting rods are sleeved with springs, the circumferential outer walls of the connecting rods are fixedly connected to limiting sleeves, the ends of the connecting rods are fixedly connected to guide blocks, and the inner wall of the gear ring is fixedly connected to a plurality of extrusion blocks.

[0014] Preferably, one end of the spring is fixedly connected to the limiting sleeve, and the other end of the spring is fixedly connected to the fixing sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The corrosion resistance testing device for metal pipes uses an electric slide rail to move the pipe so that the pipe moves to the top of the liquid storage cylinder. The third motor drives the worm to rotate, which drives the worm wheel to rotate. The worm wheel drives the driving wheel to rotate through the output shaft, which drives the rubber sleeve to rotate, and drives the metal pipe up and down through the rubber sleeve, so as to achieve stable movement of the metal pipe and avoid collision between the metal pipe and the outer wall of the glass container.

[0017] 2. The corrosion resistance testing device for metal pipes has a cylinder that pushes the fixed frame to move, and the fixed frame drives the slider to slide along the inner wall of the guide rail. When the fixed frame moves, it drives the fixed rod to move, and when the fixed rod moves, it drives the driving wheel to move, so that the rubber sleeve on the outer wall of the driving wheel abuts against the outer wall of the pipe, so as to be suitable for pipes of different sizes.

[0018] 3. The metal pipe corrosion resistance testing device drives the threaded rod to rotate by the first motor, so that the mounting frame drives the limit plate to slide along the inner wall of the limit hole, thereby adapting to the use of pipes of different lengths.

[0019] 4. The metal pipe corrosion resistance testing device drives the driving shaft to rotate through the second motor, drives the gear to rotate through the driving shaft, drives the gear ring to rotate through the gear, drives multiple extrusion blocks to rotate through the gear ring, and extrude the guide block through the extrusion block. At this time, the guide block pushes the connecting rod to slide along the inner wall of the rotating sleeve, and pushes the hinge seat to move through the connecting rod, so that the hinge seat pushes the roller to extrude and limit the outer walls of pipes of different sizes.

[0020] 5. The corrosion resistance testing device for metal pipes drives the sliding part to move through the electric slide rail, drives the support frame to move through the sliding part, drives the mounting frame to move through the support frame, thereby driving the rotating sleeve to move, thereby facilitating the fixing and disassembly of the metal pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the partial structure of the support frame of the present invention;

[0024] Figure 3 It is a schematic diagram of the partial structure of the mounting frame of the present invention;

[0025] Figure 4 It is a schematic diagram of the installation structure of the fixing bracket of the present invention;

[0026] Figure 5 It is a schematic diagram of the installation structure of the rotating sleeve of the present invention;

[0027] Figure 6 It is a schematic diagram of the installation structure of the roller of the present invention;

[0028] Figure 7 It is a schematic diagram of the installation structure of the driving wheel of the present invention.

[0029] Explanation of the numbers in the figure: 1. Mounting seat; 2. Liquid storage cylinder; 3. Electric slide rail; 4. Sliding part; 5. First motor; 6. Support frame; 7. Threaded rod; 8. Limit plate; 9. Limit hole; 10. Mounting frame; 11. Mounting plate; 12. Cylinder; 13. Fixed frame; 14. Guide rail; 15. Sliding block; 16. Machine base; 17. Second motor; 18. Drive shaft; 19. Gear; 20. Fixed sleeve; 21. Rotating sleeve; 22. Connecting sleeve; 23. Gear ring; 24. Extrusion block; 25. Connecting rod; 26. Hinge seat; 27. Roller; 28. Spring; 29. ​​Limit sleeve; 30. Guide block; 31. Fixed rod; 32. Fixed seat; 33. Support plate; 34. Third motor; 35. Worm; 36. Output shaft; 37. Worm wheel; 38. Drive wheel; 39. Rubber sleeve; 40. Anti-skid groove. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation mode of the present application clearer, the technical solution in the implementation mode of the present application will be clearly and completely described in combination with the drawings in the implementation mode of the present application. Obviously, the described implementation mode is a part of the implementation mode of the present application, not all the implementation modes. Based on the implementation mode in the present application, all other implementation modes obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application. The specific implementation modes of the present invention are described in detail in combination with the drawings in the specification.

[0031] like Figure 4 and Figure 7As shown, a corrosion resistance testing device for metal pipes includes a mounting frame 10, wherein the inner wall of the mounting frame 10 is fixedly connected to a mounting plate 11, the inner wall of the mounting plate 11 is fixedly connected to a cylinder 12, the output end of the cylinder 12 is fixedly connected to a fixing frame 13, the inner wall of the fixing frame 13 is fixedly connected to a fixing rod 31, the outer wall of the fixing rod 31 is fixedly connected to a fixing seat 32, the outer wall of the fixing seat 32 is fixedly connected to a supporting plate 33, the outer wall of the supporting plate 33 is fixedly connected to a third motor 34, the output end of the third motor 34 is fixedly connected to a worm 35, the end of the worm 35 is rotatably connected to the supporting plate 33, the inner wall of the fixing seat 32 is rotatably connected to an output shaft 36, the end of the output shaft 36 passes through the fixing seat 32 and extends to the outside thereof, and the circumferential outer wall of the output shaft 36 is fixedly connected to There is a worm wheel 37, which meshes with the worm 35. The outer wall of the output shaft 36 is fixedly connected to a driving wheel 38, and the outer wall of the driving wheel 38 is fixedly connected to a rubber sleeve 39. The outer wall of the rubber sleeve 39 is provided with a plurality of anti-skid grooves 40; the cooperation between the worm 35 and the worm wheel 37, and the threaded connection between the threaded rod 7 and the mounting frame 10, both provide precise transmission ratio and positioning capability, which enables the device to operate at a precise position, thereby improving the accuracy and efficiency of the work; the rubber sleeve 39 and the anti-skid grooves 40 arranged on the outer wall of the driving wheel 38 can increase the friction between the driving wheel 38 and the driven object, and prevent slipping during the driving process, which can not only improve the driving force and stability of the equipment, but also extend the service life of the equipment.

[0032] like Figure 1 As shown, the metal pipe corrosion resistance testing device also includes a mounting seat 1, and a liquid container 2 is fixedly connected to the top of the mounting seat 1.

[0033] like Figure 1 As shown, an electric slide rail 3 is fixedly connected to the outer wall of the mounting seat 1 , and a sliding part 4 is installed on the top of the electric slide rail 3 .

[0034] like Figure 1 As shown, the top of the sliding part 4 is fixedly connected to a support frame 6, the outer wall of the support frame 6 is fixedly connected to a first motor 5, the output end of the first motor 5 is fixedly connected to a threaded rod 7, the top of the threaded rod 7 is rotatably connected to the support frame 6, and the threaded rod 7 passes through the mounting frame 10 and is threadedly connected thereto; Figure 1-Figure 3 As shown, a limiting plate 8 is fixedly connected to the outer wall of the mounting frame 10, a limiting hole 9 is opened on the top of the supporting frame 6, and the end of the limiting plate 8 passes through the limiting hole 9 and is slidably connected thereto; the threaded rod 7 is driven to rotate by the first motor 5, so that the mounting frame 10 drives the limiting plate 8 to slide along the inner wall of the limiting hole 9, thereby adapting to the use of pipes of different lengths.

[0035] Two guide rails 14 are fixedly connected to the inner wall of the mounting frame 10, and sliders 15 are slidably connected to the inner walls of the guide rails 14, and the sliders 15 are fixedly connected to the fixing frame 13 respectively; through the sliding connection between the guide rails 14 and the sliders 15, and the cooperation between the limit plates 8 and the limit holes 9, stable support and guidance are provided for the entire device, which not only prevents the device from shaking or deflecting during operation, but also improves the durability and stability of the equipment.

[0036] like Figure 4 As shown, the top and bottom of the mounting frame 10 are fixedly connected to a base 16, the outer wall of the base 16 is fixedly connected to a second motor 17, the output end of the second motor 17 is fixedly connected to a drive shaft 18, and the outer wall of the drive shaft 18 is fixedly connected to a gear 19.

[0037] like Figure 5 and Figure 6 As shown, two fixed sleeves 20 are fixedly connected to the end of the mounting frame 10, the inner wall of the fixed sleeve 20 is rotatably connected to the rotating sleeve 21, the outer wall of the rotating sleeve 21 is fixedly connected to the connecting sleeve 22, the outer wall of the connecting sleeve 22 is fixedly connected to the gear ring 23, and the gear ring 23 is meshed with the gear 19;

[0038] A plurality of connecting rods 25 are slidably connected to the circumferential outer wall of the rotating sleeve 21, and the ends of the connecting rods 25 penetrate the rotating sleeve 21 and extend to the inner side thereof, and the ends of the connecting rods 25 are fixedly connected to hinge seats 26, and the inner walls of the hinge seats 26 are rotatably connected to rollers 27, and the circumferential outer walls of the connecting rods 25 are sleeved with springs 28, and the circumferential outer walls of the connecting rods 25 are fixedly connected to limiting sleeves 29, and the ends of the connecting rods 25 are fixedly connected to guide blocks 30, and the inner wall of the ring gear 23 is fixedly connected to a plurality of extrusion blocks 24, one end of the spring 28 is fixedly connected to the limiting sleeve 29, and the other end of the spring 28 is fixedly connected to the fixed sleeve 20; the ring gear 23 is driven to rotate by the second motor 17, and the plurality of extrusion blocks 24 are driven to rotate by the ring gear 23, and the guide block 30 is extruded by the extrusion block 24, and the guide block 30 pushes the roller 27 at the end of the connecting rod 25 to extrude and limit the outer walls of pipes of different sizes.

[0039] Working principle: The electric slide rail 3 drives the sliding part 4 to move, the sliding part 4 drives the support frame 6 to move, and the support frame 6 drives the mounting frame 10 to move, thereby driving the rotating sleeve 21 to move, thereby facilitating the fixing and disassembly of the metal pipe;

[0040] Put the metal pipe in the two rotating sleeves 21, drive the driving shaft 18 to rotate through the second motor 17, drive the gear 19 to rotate through the driving shaft 18, drive the gear ring 23 to rotate through the gear 19, drive the multiple extrusion blocks 24 to rotate through the gear ring 23, and extrude the guide block 30 through the extrusion block 24. At this time, the guide block 30 pushes the connecting rod 25 to slide along the inner wall of the rotating sleeve 21, and pushes the hinge seat 26 to move through the connecting rod 25, and the hinge seat 26 pushes the roller 27 to extrude and limit the outer wall of the pipes of different sizes;

[0041] At the same time, the cylinder 12 pushes the fixing frame 13 to move, and the fixing frame 13 drives the slider 15 to slide along the inner wall of the guide rail 14. When the fixing frame 13 moves, it drives the fixing rod 31 to move, and when the fixing rod 31 moves, it drives the driving wheel 38 to move, so that the rubber sleeve 39 on the outer wall of the driving wheel 38 is in friction contact with the outer wall of the pipe, and the pipe is fixed to be suitable for pipes of different sizes;

[0042] After being fixed, the electric slide rail 3 drives the pipeline to move, so that the pipeline moves to the top of the liquid storage cylinder 2, and the worm 35 is driven to rotate by the third motor 34, and the worm 35 drives the worm gear 37 to rotate, and the worm gear 37 drives the driving wheel 38 to rotate through the output shaft 36, and the driving wheel 38 drives the rubber sleeve 39 to rotate, and the rubber sleeve 39 drives the metal pipe to move up and down, so as to realize the stable movement of the metal pipe and avoid the collision between the metal pipe and the outer wall of the glass container;

[0043] The threaded rod 7 is driven to rotate by the first motor 5, so that the mounting frame 10 drives the limiting plate 8 to slide along the inner wall of the limiting hole 9, thereby adapting to the use of pipelines of different lengths.

[0044] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal pipe corrosion resistance testing device, comprising a mounting frame (10), characterized in that: The inner wall of the mounting frame (10) is fixedly connected to a mounting plate (11), the inner wall of the mounting plate (11) is fixedly connected to a cylinder (12), the output end of the cylinder (12) is fixedly connected to a fixing frame (13), the inner wall of the fixing frame (13) is fixedly connected to a fixing rod (31), the outer wall of the fixing rod (31) is fixedly connected to a fixing seat (32), the outer wall of the fixing seat (32) is fixedly connected to a supporting plate (33), the outer wall of the supporting plate (33) is fixedly connected to a third motor (34), and the output end of the third motor (34) is fixedly connected to a worm (35) The end of the worm (35) is rotatably connected to the support plate (33); the inner wall of the fixed seat (32) is rotatably connected to an output shaft (36); the end of the output shaft (36) passes through the fixed seat (32) and extends to the outside thereof; the circumferential outer wall of the output shaft (36) is fixedly connected to a worm wheel (37); the worm wheel (37) is meshed with the worm (35); the circumferential outer wall of the output shaft (36) is fixedly connected to a driving wheel (38); the outer wall of the driving wheel (38) is fixedly connected to a rubber sleeve (39); and the outer wall of the rubber sleeve (39) is provided with a plurality of anti-slip grooves (40).

2. The metal pipe corrosion resistance testing device according to claim 1, characterized in that: It also comprises a mounting seat (1), the top of which is fixedly connected to a liquid container (2).

3. The metal pipe corrosion resistance testing device according to claim 2, characterized in that: An electric slide rail (3) is fixedly connected to the outer wall of the mounting seat (1), and a sliding portion (4) is installed on the top of the electric slide rail (3).

4. The metal pipe corrosion resistance testing device according to claim 3 is characterized in that: The top of the sliding part (4) is fixedly connected to a support frame (6), the outer wall of the support frame (6) is fixedly connected to a first motor (5), the output end of the first motor (5) is fixedly connected to a threaded rod (7), the top of the threaded rod (7) is rotatably connected to the support frame (6), and the threaded rod (7) passes through the mounting frame (10) and is threadedly connected thereto.

5. The metal pipe corrosion resistance testing device according to claim 4, characterized in that: The outer wall of the mounting frame (10) is fixedly connected to a limiting plate (8), the top of the support frame (6) is provided with a limiting hole (9), and the end of the limiting plate (8) passes through the limiting hole (9) and is slidably connected thereto.

6. The metal pipe corrosion resistance testing device according to claim 5, characterized in that: Two guide rails (14) are fixedly connected to the inner wall of the mounting frame (10), and the inner walls of the guide rails (14) are slidably connected to sliders (15), and the sliders (15) are fixedly connected to the fixing frame (13) respectively.

7. The metal pipe corrosion resistance testing device according to claim 6, characterized in that: The top and bottom of the mounting frame (10) are fixedly connected to a base (16), the outer wall of the base (16) is fixedly connected to a second motor (17), the output end of the second motor (17) is fixedly connected to a drive shaft (18), and the outer wall of the drive shaft (18) is fixedly connected to a gear (19).

8. The metal pipe corrosion resistance testing device according to claim 7, characterized in that: Two fixed sleeves (20) are fixedly connected to the ends of the mounting frame (10); the inner walls of the fixed sleeves (20) are rotatably connected to rotating sleeves (21); the circumferential outer walls of the rotating sleeves (21) are fixedly connected to connecting sleeves (22); the circumferential outer walls of the connecting sleeves (22) are fixedly connected to gear rings (23); and the gear rings (23) are meshed with the gears (19).

9. The metal pipe corrosion resistance testing device according to claim 8, characterized in that: The outer circumferential wall of the rotating sleeve (21) is slidably connected to a plurality of connecting rods (25); the ends of the connecting rods (25) penetrate the rotating sleeve (21) and extend to the inner side thereof; the ends of the connecting rods (25) are fixedly connected to hinge seats (26); the inner walls of the hinge seats (26) are rotatably connected to rollers (27); the outer circumferential walls of the connecting rods (25) are sleeved with springs (28); the outer circumferential walls of the connecting rods (25) are fixedly connected to limiting sleeves (29); the ends of the connecting rods (25) are fixedly connected to guide blocks (30); and the inner wall of the gear ring (23) is fixedly connected to a plurality of extrusion blocks (24).

10. The metal pipe corrosion resistance testing device according to claim 9, characterized in that: One end of the spring (28) is fixedly connected to the limiting sleeve (29), and the other end of the spring (28) is fixedly connected to the fixing sleeve (20).

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