A pipe straightening device

Abstract

The utility model relates to a pipeline straightening device, include: base, torsion mechanism, with base fixed connection, drawing mechanism, with base sliding connection, at least one jacking mechanism, with base sliding connection, jacking mechanism includes jacking cylinder and with the first connecting seat of jacking cylinder's acting end connection, first connecting seat is set up as the surface of sticking to pipeline and supports the pipeline, at least one press -down mechanism, with base sliding connection, press -down mechanism includes servo electric jar, with servo electric jar's output end connection's bandage, with base sliding connection's third base and with third base rotary connection's guide wheel, and the bandage of guide wheel changes the direction of servo electric jar output's force of action is bound pipeline, the utility model has high integration, can integrate multiple single experimental equipment, reduce infrastructure, reduce the straightening cost of ocean oil and gas pipeline to carry out prototype experiment.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a pipe straightening device. Background Technology

[0002] Non-adhesive flexible pipelines are laid in the ocean to transport high-temperature and high-pressure mixtures of oil, gas, and water. The pipeline's ability to resist deformation is measured by its stiffness, including axial stiffness, bending stiffness, and torsional stiffness. These data are crucial parameters for calculating the pipeline's fatigue life.

[0003] According to API specifications, pipelines must undergo prototype testing before leaving the factory, and the pipelines must be in a straight state. Non-adhesive flexible pipelines are wound onto reels during production. Test pipes are taken from the reel, typically 3-8 meters in length. This length of test pipe is bent, which is unfavorable for joint installation and prototype testing. The pipe structure is complex, with many layers, and cannot be straightened manually. A straightening system is needed to adjust the pipeline to a straight state, facilitating subsequent joint installation and prototype testing.

[0004] There is a need for a testing device to straighten flexible pipes. Since the prototype test pipes will naturally bend after processing and manufacturing, instead of being straight, this will affect the test results. A new testing system is needed to ensure that the pipes are straight before the prototype test.

[0005] In existing technologies, most testing systems directly measure and calculate key performance parameters such as bending stiffness and axial stiffness of pipes after they have been manufactured. These parameters will have certain errors compared to the test results of pipes in straight pipe conditions, resulting in poor accuracy of the calculated stiffness. Utility Model Content

[0006] In view of the shortcomings of the existing technology, this utility model discloses a pipe straightening device.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A pipe straightening device, comprising:

[0009] Base;

[0010] The torsion mechanism is fixedly connected to the base;

[0011] The tensioning mechanism is slidably connected to the base;

[0012] At least one lifting mechanism is slidably connected to the base; the lifting mechanism includes a lifting cylinder and a first connecting seat connected to the working end of the lifting cylinder; the first connecting seat is configured to conform to the surface of the pipe and support the pipe.

[0013] At least one pressing mechanism is slidably connected to the base; the pressing mechanism includes a servo electric cylinder, a strap connected to the output end of the servo electric cylinder, a third base slidably connected to the base, and a guide wheel rotatably connected to the third base; the strap passes around the guide wheel to bind the pipe, and the guide wheel changes the direction of the force output by the servo electric cylinder.

[0014] In one embodiment of the present invention, the first connecting seat includes a second base slidably connected to the base, a second connecting rod fixed to the second base, and a second V-shaped device fixedly connected to the second connecting rod; the second V-shaped device has a second opening; the second opening faces the pipe; the second base is configured to install the lifting cylinder.

[0015] In one embodiment of the present invention, the first connecting seat further includes two second rollers; the two second rollers are respectively disposed at the ends of the second opening; the second rollers are configured to contact the surface of the pipe.

[0016] In one embodiment of the present invention, the torsion mechanism includes a hydraulic rotary cylinder fixed to the base and a first connecting module connected to the output end of the hydraulic rotary cylinder; the first connecting module is configured to abut one end of the pipe.

[0017] In one embodiment of the present invention, the stretching mechanism includes a stretching cylinder slidably connected to the base and a second connecting module connected to the output end of the stretching cylinder; the second connecting module is configured to approach and abut against the other end of the pipe through the action of the stretching cylinder.

[0018] In one embodiment of this utility model, the tensioning cylinder is horizontally positioned.

[0019] In one embodiment of the present invention, at least one support mechanism slidably connected to the base is further included; the support mechanism is configured to support the pipe.

[0020] In one embodiment of the present invention, the support mechanism includes a first base slidably connected to the base, a first connecting rod vertically fixed to the first base, and a first V-shaped device fixedly connected to the first connecting rod; the first V-shaped device has a first opening; the first opening faces the pipe.

[0021] In one embodiment of the present invention, the support mechanism further includes two first rollers; the two first rollers are respectively disposed at the ends of the first opening; the first rollers are configured to contact the surface of the pipe.

[0022] In one embodiment of this utility model, the base is provided with multiple tracks along its length.

[0023] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0024] The pipeline straightening device described in this utility model reduces the cost of a single experimental device. This device integrates a support mechanism, a lifting mechanism, a pressing mechanism, a slide rail, and a base mechanism, with a high degree of integration. It can integrate multiple sets of single experimental devices, reduce infrastructure, and lower the cost of straightening marine oil and gas pipelines.

[0025] The pipe straightening device described in this utility model reduces experimental errors introduced by the natural bending state of the pipe during the test. Before leaving the factory, the pipe must undergo a series of prototype tests. According to API specifications, the pipe must be in a straight state before the prototype test to reduce the test errors caused by pipe bending. This patent can straighten pipes of different sizes and lengths along the 360° direction of the pipe circumference, improving the reliability of the pipe prototype test results.

[0026] The pipe straightening device described in this utility model provides pipe straightening test results that are closer to the theoretical design values. Based on the modules integrated into the device, it can straighten the pipe more comprehensively from multiple angles, ensuring that the test pipe is in a straight pipe state. The test results are fed back into the design, improving and optimizing the design capabilities. Attached Figure Description

[0027] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0028] Figure 1 This is a first-view structural schematic diagram of the pipe straightening device in this utility model.

[0029] Figure 2 This is a second-view structural schematic diagram of the pipe straightening device in this utility model.

[0030] Figure 3 yes Figure 2 Enlarged schematic diagram of the middle support mechanism.

[0031] Figure 4 yes Figure 2 Enlarged schematic diagram of the central lifting mechanism.

[0032] Figure 5 yes Figure 2 Enlarged schematic diagram of the middle and lower pressure mechanism.

[0033] Explanation of reference numerals on the accompanying drawings:

[0034] 10. Torsion mechanism; 101. Hydraulic rotary cylinder; 102. First connecting module;

[0035] 20. Support mechanism; 201. First base; 202. First connecting rod; 203. First V-shaped device; 204. First roller;

[0036] 30. Lifting mechanism; 301. Lifting cylinder; 302. Second base; 303. Second connecting rod; 304. Second V-shaped device; 305. Second roller;

[0037] 40. Pressing mechanism; 401. Servo electric cylinder; 402. Strap; 403. Third base; 404. Guide wheel;

[0038] 50. Tensioning mechanism; 501. Tensioning cylinder; 502. Second connecting module;

[0039] 60. Base;

[0040] 70. Track;

[0041] 80. Pipeline. Detailed Implementation

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0043] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present utility model. Furthermore, in all embodiments, the same reference numerals denote the same elements.

[0044] Combination Figure 1 and Figure 2 A pipe straightening device includes a torsion mechanism 10, two support mechanisms 20, a lifting mechanism 30, four pressing mechanisms 40, a tensioning mechanism 50, and a base 60. The torsion mechanism 10 and the tensioning mechanism 50 are configured to abut against both ends of a pipe 80. The two support mechanisms 20, the lifting mechanism 30, and the four pressing mechanisms 40 are configured to support the pipe 80.

[0045] The torsion mechanism 10 and the base 60 are fixedly connected. Specifically, the torsion mechanism 10 includes a hydraulic rotary cylinder 101 fixed to the base 60 and a first connection module 102 connected to the output end of the hydraulic rotary cylinder 101. The first connection module 102 is configured to abut one end of the pipe 80.

[0046] Both support mechanisms 20 are slidably connected to the base 60. The two support mechanisms 20 are respectively located at the ends near the pipe 80. Specifically, as shown... Figure 3 As shown, the support mechanism 20 includes a first base 201 slidably connected to the base 60, a first connecting rod 202 vertically fixed to the first base 201, and a first V-shaped device 203 fixedly connected to the first connecting rod 202. The first V-shaped device 203 has a first opening. The first opening faces the pipe 80.

[0047] Furthermore, the support mechanism 20 also includes two first rollers 204. The two first rollers 204 are respectively located at the ends of the first opening. The first rollers 204 are configured to contact the surface of the pipe 80. The first rollers 204 support the pipe 80 through rolling contact, significantly reducing friction between the pipe 80 and the first V-shaped device 203. This low-friction contact reduces resistance when the pipe 80 moves or adjusts its position, making operation smoother.

[0048] The lifting mechanism 30 and the base 60 are slidably connected. The lifting mechanism 30 is generally located in the middle of the pipe 80. Specifically, as shown... Figure 4 As shown, the lifting mechanism 30 includes a lifting cylinder 301 and a first connecting seat connected to the actuating end of the lifting cylinder 301. The first connecting seat is configured to conform to the surface of the pipe 80 and support the pipe 80. The first connecting seat includes a second base 302 slidably connected to the base 60, a second connecting rod 303 fixed to the second base 302, and a second V-shaped device 304 fixedly connected to the second connecting rod 303. The second V-shaped device 304 has a second opening. The second opening faces the pipe 80. The second base 302 is configured to mount the lifting cylinder 301.

[0049] Furthermore, the first connecting seat also includes two second rollers 305. The two second rollers 305 are respectively located at the ends of the second opening. The second rollers 305 are configured to contact the surface of the pipe 80. The second rollers 305 support the pipe 80 through rolling contact, significantly reducing friction between the pipe 80 and the second V-shaped device 304. This low-friction contact reduces resistance when the pipe 80 moves or adjusts its position, making operation smoother.

[0050] The pressing mechanism 40 and the base 60 are slidably connected. Specifically, as shown... Figure 5As shown, the pressing mechanism 40 includes a servo cylinder 401, a strap 402 connected to the output end of the servo cylinder 401, a third base 403 slidably connected to the base 60, and a guide wheel 404 rotatably connected to the third base 403. The strap 402 wraps around the guide wheel 404 to bind the pipe 80, and the guide wheel 404 changes the direction of the force output by the servo cylinder 401. The servo cylinder 401 converts the rotational motion of the servo motor into linear motion, used to tighten or loosen the strap 402.

[0051] Furthermore, the strap 402 is a high-strength wide nylon strap.

[0052] The tensioning mechanism 50 and the base 60 are slidably connected. The tensioning mechanism 50 includes a tensioning cylinder 501 slidably connected to the base 60 and a second connecting module 502 connected to the output end of the tensioning cylinder 501. The second connecting module 502 is positioned to approach and abut against the other end of the pipe 80 by the action of the tensioning cylinder 501. The tensioning cylinder 501 is horizontally positioned.

[0053] The base 60 has multiple tracks 70 laid along its length, and the support mechanism 20, lifting mechanism 30, pressing mechanism 40 and tensioning mechanism 50 can all slide along the tracks 70.

[0054] It should be noted that the number of support mechanism 20, lifting mechanism 30 and pressing mechanism 40 can be designed according to the actual situation.

[0055] The working principle of this utility model is as follows:

[0056] The pipe 80 is placed on the two end support mechanisms 20 of the straightening device. The pipe 80 is initially in a bent state, and one end of the pipe 80 is fixed first.

[0057] The pressing mechanism 40 is connected to the middle of the pipe 80 via a strap 402. The other end of the pipe 80 is fixed by adjusting the four pressing mechanisms 40, at which point the pipe 80 is in a U-shape.

[0058] The middle lifting mechanism 30 acts on the pipe 80, supporting the middle of the pipe 80 through the second V-shaped device 304. The four pressing mechanisms 40 work simultaneously, tightening the binding strap 402. The horizontal binding strap 402 provides a downward vertical force to the pipe 80 through the guide wheel 404. When the pressing mechanism 40 retracts slightly, the lifting cylinder 301 of the lifting mechanism 30 retracts slightly downward (the action time is slightly later than that of the pressing mechanism 40). During this process, the elastic deformation of the pipe 80 itself is overcome, and the friction force is provided by the wide and flat binding strap 402 to ensure that the pipe 80 does not rotate during the straightening process.

[0059] The lifting mechanism 30 and the pressing mechanism 40 can move freely within the slide rail to make fine adjustments and reverse bends at each bend position (after straightening one position, it can be rotated along the axis of the pipe 80 and then fixed). The above actions are repeated until the pipe is straightened. After multiple adjustments and measurements, the pipe 80 is in a straight state.

[0060] As described above, the pipe straightening device provided by this utility model can straighten the manufactured pipe 80 before prototype testing, and can straighten the pipe 80 in 360° direction. The pipe 80 straightened by this device can minimize the test errors introduced by the non-straight pipe state during prototype testing.

[0061] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0062] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A pipe straightening device, characterized in that, include: Base (60); The torsion mechanism (10) is fixedly connected to the base (60); The tensioning mechanism (50) is slidably connected to the base (60); At least one lifting mechanism (30) is slidably connected to the base (60); the lifting mechanism (30) includes a lifting cylinder (301) and a first connecting seat connected to the working end of the lifting cylinder (301); the first connecting seat is configured to conform to the surface of the pipe (80) and support the pipe (80). At least one pressing mechanism (40) is slidably connected to the base (60); the pressing mechanism (40) includes a servo electric cylinder (401), a strap (402) connected to the output end of the servo electric cylinder (401), a third base (403) slidably connected to the base (60), and a guide wheel (404) rotatably connected to the third base (403); the strap (402) wraps around the guide wheel (404) to bind the pipe (80), and the guide wheel (404) changes the direction of the force output by the servo electric cylinder (401).

2. The pipe straightening device according to claim 1, characterized in that, The first connecting seat includes a second base (302) slidably connected to the base (60), a second connecting rod (303) fixed to the second base (302), and a second V-shaped device (304) fixedly connected to the second connecting rod (303); the second V-shaped device (304) has a second opening; the second opening faces the pipe (80); the second base (302) is configured to install the lifting cylinder (301).

3. The pipe straightening device according to claim 2, characterized in that, The first connecting seat also includes two second rollers (305); the two second rollers (305) are respectively disposed at the ends of the second opening; the second rollers (305) are configured to contact the surface of the pipe (80).

4. The pipe straightening device according to claim 1, characterized in that, The torsion mechanism (10) includes a hydraulic rotary cylinder (101) fixed to the base (60) and a first connecting module (102) connected to the output end of the hydraulic rotary cylinder (101); the first connecting module (102) is configured to abut one end of the pipe (80).

5. The pipe straightening device according to claim 1, characterized in that, The tensioning mechanism (50) includes a tensioning cylinder (501) slidably connected to the base (60) and a second connecting module (502) connected to the output end of the tensioning cylinder (501); the second connecting module (502) is configured to approach and abut against the other end of the pipe (80) through the action of the tensioning cylinder (501).

6. The pipe straightening device according to claim 5, characterized in that, The tensioning cylinder (501) is set horizontally.

7. The pipe straightening device according to claim 1, characterized in that, It also includes at least one support mechanism (20) that is slidably connected to the base (60); the support mechanism (20) is configured to support the pipe (80).

8. The pipe straightening device according to claim 7, characterized in that, The support mechanism (20) includes a first base (201) slidably connected to the base (60), a first connecting rod (202) vertically fixed to the first base (201), and a first V-shaped device (203) fixedly connected to the first connecting rod (202); the first V-shaped device (203) has a first opening; the first opening faces the pipe (80).

9. The pipe straightening device according to claim 8, characterized in that, The support mechanism (20) further includes two first rollers (204); the two first rollers (204) are respectively disposed at the ends of the first opening; the first rollers (204) are configured to contact the surface of the pipe (80).

10. The pipe straightening device according to claim 1, characterized in that, The base (60) has multiple tracks (70) laid along its length.

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