Dynamic cable anti-bending device suspension angle adjusting device

Abstract

The utility model relates to the field of dynamic cable protection, in particular to a suspension angle adjusting device of a dynamic cable anti-bending device, which comprises a support provided with a mounting groove. The connecting part is located above the mounting groove, an anti-bending device is arranged on the connecting part, and the anti-bending device is connected with a dynamic cable; the suspension angle adjusting mechanism is arranged on the inner wall of the mounting groove and used for adjusting the suspension angle of the anti-bending device in the cable arrangement direction and in the direction perpendicular to the cable arrangement direction. According to the utility model, whether the maximum curvature of the dynamic cable meets the allowable curvature or not under the suspension angle of the anti-bending device can be judged according to the wave direction and grade, and if not, the suspension angle of the anti-bending device along the wave direction can be automatically adjusted through the servo motor a and the servo motor b in the two directions; therefore, the maximum curvature of the dynamic cable is always in an allowable curvature range, and the cable is prevented from being excessively bent.

Description

Technical Field

[0001] The utility model relates to the field of dynamic cable protection, in particular to a dynamic cable anti-bending device suspension angle adjustment device. Background Art

[0002] As a key device connecting floating wind turbines with static submarine cables, dynamic cables are subject to a variety of dynamic loads during service, such as floating body movement, waves and ocean currents, and are subjected to large tensile and bending loads. Excessive bending may occur, especially at the interface with rigid equipment, which may cause fatigue failure. In order to prevent the dynamic cable from excessive bending failure, it is necessary to achieve a stiffness transition between the dynamic cable and the floating platform suspension area. The use of a conical structure made of polyurethane, i.e., a bend preventer, is an effective way to achieve this goal. However, existing bend preventers are usually fixed on floating platforms, which can prevent the dynamic cable from excessive bending at the connection. However, under extreme working conditions, the maximum curvature of the part of the dynamic cable that exceeds the bend preventer may exceed the maximum allowable curvature of the cable under extreme working conditions. Exceeding the allowable limit will directly aggravate the fatigue damage of the dynamic submarine cable. At present, the main methods to reduce the curvature at this location are to add a weight after the bend preventer outlet or adjust the suspension angle of the bend preventer.

[0003] In engineering practice, the gravity block is located underwater. If you want to adjust it according to the working conditions, the operation is difficult. At the same time, adding a gravity block will also increase the maximum effective tension and von Mises stress of the dynamic cable, which is not conducive to the life of the submarine cable and imposes additional loads on the connectors between the submarine cable and the platform. The adjustment of the suspension angle can be achieved through an automatically adjustable angle anti-bending device. The device is small and close to the sea surface, which is more convenient to operate. At the same time, when the suspension angle is adjusted, no additional stress load will be generated on the submarine cable, which is more conducive to engineering practice. The currently proposed automatically adjustable angle anti-bending device can only adjust its suspension angle along the direction of the submarine cable layout. This is the best effect of reducing the dynamic cable curvature at the outlet of the anti-bending device when the wave direction is the same as the cable layout direction. However, as the angle between the wave direction and the cable layout direction increases until the two directions are perpendicular, the effect of the device on reducing the dynamic cable curvature at the outlet of the anti-bending device gradually decreases until the corresponding effect is lost. Utility Model Content

[0004] The utility model aims to propose a dynamic cable anti-bending device suspension angle adjustment device to solve the problem that the automatic angle adjustment anti-bending device in the background technology can only adjust its suspension angle along the arrangement direction of the submarine cable.

[0005] The technical solution of the utility model is: a dynamic cable anti-bending device suspension angle adjustment device, comprising a bracket, a mounting groove is arranged on the bracket; and further comprising:

[0006] A connecting component is located above the mounting groove, a bending preventer is arranged on the connecting component, and a dynamic cable is connected to the bending preventer;

[0007] And a hanging angle adjustment mechanism is arranged on the inner wall of the installation groove and is used to adjust the hanging angle of the anti-bending device along the cable arrangement direction and perpendicular to the cable arrangement direction.

[0008] Preferably, the suspension angle adjustment mechanism includes a support member arranged on the inner wall of the mounting groove, a central rotating component rotatably arranged on the support member, an inner rotating guide member rotatably arranged on the inner wall of the mounting groove, and an outer rotating guide member rotatably arranged on the inner wall of the mounting groove, the outer rotating guide member and the central rotating component are rotatably connected; the rotation direction of the inner rotating guide member is the same as the rotation direction of the central rotating component on the support member, the rotation center line of the outer rotating guide member passes through the rotation center point of the central rotating component, and the rotation directions of the outer rotating guide member and the inner rotating guide member are perpendicular.

[0009] Preferably, a sliding member b is provided on the supporting member, a sliding groove b is provided on the outer peripheral wall at the bottom of the central rotating member, and the sliding member b is slidably connected to the sliding groove b.

[0010] Preferably, the bracket is provided with a servo motor a and a servo motor b for driving the inner rotating guide and the outer rotating guide to rotate, the servo motor a is provided with a wave sensor and a servo motor controller a, and the servo motor b is provided with a servo motor controller b and a single chip microcomputer.

[0011] Preferably, the outer rotating guide is located outside the inner rotating guide, and arc grooves are provided on both the inner rotating guide and the outer rotating guide, and the two arc grooves are located on two vertical planes perpendicular to each other. A slide groove a is provided on the outer peripheral wall of the central rotating component, and the slide groove a and the slide groove b are respectively located on two vertical planes perpendicular to each other. A sliding member a is slidably provided in the slide groove a, and a connecting rod is provided at the bottom of the connecting component, which passes through the arc grooves on the inner rotating guide and the outer rotating guide and is connected to the sliding member a.

[0012] Compared with the prior art, the utility model has the following beneficial technical effects: it can be judged whether the maximum curvature of the dynamic cable meets the allowable curvature under the suspension angle of the anti-bending device according to the wave direction and level. If not, the suspension angle of the anti-bending device along the wave direction can be automatically adjusted by servo motors a and b in two directions, so that the maximum curvature of the dynamic cable is always within the allowable curvature range, preventing the cable from excessive bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0014] Figure 2 for Figure 1 Bottom view of

[0015] Figure 3 and Figure 4 Both Figure 1 Schematic diagram of part of the structure.

[0016] Figure numerals: 1. bracket; 2. central rotating part; 3. inner rotating guide; 4. outer rotating guide; 5. servo motor a; 6. servo motor b; 7. wave sensor; 8. servo motor controller a; 9. servo motor controller b; 10. single chip microcomputer; 11. connecting part; 12. anti-bending device; 13. dynamic cable; 14. mounting groove; 15. support member; 16. connecting rod; 17. sliding member a; 18. sliding member b. DETAILED DESCRIPTION

[0017] Embodiment 1

[0018] like Figure 1-Figure 2 As shown, the utility model provides a suspension angle adjustment device for a dynamic cable anti-bending device, comprising a bracket 1, on which a mounting groove 14 is arranged; and further comprising:

[0019] A connecting component 11 is located above the mounting groove 14, and a bending preventer 12 is provided on the connecting component 11, and a dynamic cable 13 is connected to the bending preventer;

[0020] And a suspension angle adjustment mechanism is arranged on the inner wall of the installation groove 14, and is used to adjust the suspension angle of the anti-bending device 12 along the cable arrangement direction and perpendicular to the cable arrangement direction.

[0021] Embodiment 2

[0022] like Figure 3-Figure 4 As shown, the utility model proposes a dynamic cable anti-bending device suspension angle adjustment device. Compared with the first embodiment, this embodiment introduces the structure of the suspension angle adjustment mechanism.

[0023] The suspension angle adjustment mechanism includes a support member 15 arranged on the inner wall of the mounting groove 14, a central rotating component 2 rotatably arranged on the support member 15, an inner rotating guide member 3 rotatably arranged on the inner wall of the mounting groove 14, and an outer rotating guide member 4 rotatably arranged on the inner wall of the mounting groove 14, the outer rotating guide member 4 and the central rotating component 2 are rotatably connected; the rotation direction of the inner rotating guide member 3 is the same as the rotation direction of the central rotating component 2 on the support member 15, the rotation of the inner rotating guide member 3 drives the central rotating component 2 to rotate, the rotation center line of the outer rotating guide member 4 passes through the rotation center point of the central rotating component 2, the rotation directions of the outer rotating guide member 4 and the inner rotating guide member 3 are perpendicular, the rotation of the outer rotating guide member 4 makes it move along the arc-shaped peripheral wall of the central rotating component 2, the inner rotating guide member 3 and the outer rotating guide member 4 respectively drive the connecting component 11 to rotate in two perpendicular directions, and each rotation direction is arc-shaped.

[0024] Embodiment 3

[0025] like Figure 2-Figure 4 As shown, the utility model proposes a dynamic cable anti-bending device suspension angle adjustment device. Compared with the first or second embodiment, this embodiment introduces the detailed structure of the suspension angle adjustment mechanism in detail.

[0026] A sliding member b18 is arranged on the support member 15, and a sliding groove b is arranged on the outer peripheral wall at the bottom of the central rotating part 2. The sliding member b18 is slidably connected with the sliding groove b, so that the central rotating part 2 can rotate relative to the support member 15 in one direction. It should be noted that the support member 15 is fixed and only the central rotating part 2 rotates.

[0027] The bracket 1 is provided with a servo motor a5 and a servo motor b6 for driving the inner rotating guide member 3 and the outer rotating guide member 4 to rotate. The servo motor a5 is provided with a wave sensor 7 and a servo motor controller a8, and the servo motor b6 is provided with a servo motor controller b9 and a single chip microcomputer 10; the wave sensor 7 measures waves, and collects and transmits data in real time, inputs the collected wave data into the single chip microcomputer 10, and obtains the data of the wave sensor 7 by writing a program in the single chip microcomputer 10. By simulating and analyzing the working process of the dynamic cable in the professional hydrodynamic analysis software OrcaFlex, different In order to meet the allowable curvature of the dynamic cable under conditions of different wave levels in different directions, the suspension angle of the anti-bending device along the wave direction is required. The servo motor controller a8 and the servo motor controller b9 are controlled by writing a program in the single-chip computer 10. It is determined whether the suspension angle of the anti-bending device needs to be adjusted according to the wave level and wave direction. If the suspension angle of the anti-bending device needs to be adjusted under the wave direction and wave level, the servo motor a5 and the servo motor b6 in two directions are driven to rotate a specified number of circles respectively, so that the dynamic cable anti-bending device finally reaches the specified angle along the wave direction, so that the maximum curvature of the dynamic cable is always within the allowable curvature range.

[0028] The outer rotating guide member 4 is located outside the inner rotating guide member 3, and arc grooves are arranged on both the inner rotating guide member 3 and the outer rotating guide member 4, and the two arc grooves are arranged on two vertical planes perpendicular to each other. A slide groove a is arranged on the outer peripheral wall of the central rotating component 2, and the slide groove a and the slide groove b are respectively arranged on two vertical planes perpendicular to each other. A sliding member a17 is arranged to slide in the slide groove a, and a connecting rod 16 is arranged at the bottom of the connecting component 11, and the connecting rod 16 passes through the arc grooves on the inner rotating guide member 3 and the outer rotating guide member 4 and is connected to the sliding member a17.

[0029] In summary, when the utility model is used, first, a wave sensor 7 is selected and installed on one side of the servo motor a5, the function of the anti-bending device 12 is expanded, wave measurement is performed, and data is collected and transmitted in real time, and the collected wave data is input into the single-chip microcomputer 10 on the side of the servo motor b6, and the wave data obtained in real time by writing a program is judged in the single-chip microcomputer 10 in the above program, and whether it is necessary to adjust the suspension angle of the anti-bending device 12 is determined according to the program judgment result. If adjustment is required, the single-chip microcomputer 10 controls the servo motor controller a8 and the servo motor controller b9, and then controls the servo motor a5 and the servo motor b6. The motor drives the inner rotating guide member and the outer rotating guide member 4 to rotate in two directions, so that the connecting rod 16 and the connecting component 11 drive the anti-bending device 12 to rotate in two directions by a specified angle, and finally the suspension angle of the dynamic cable anti-bending device is adjusted to a suitable angle along the wave direction, so as to achieve the purpose of controlling the maximum curvature of the dynamic cable during operation by controlling the suspension angle of the anti-bending device 12.

[0030] The utility model can judge whether the maximum curvature of the dynamic cable meets the allowable curvature under the hanging angle of the anti-bending device 12 according to the wave direction and level. If not, the hanging angle of the anti-bending device 12 along the wave direction can be automatically adjusted by servo motors a5 and b6 in two directions, so that the maximum curvature of the dynamic cable 13 is always within the allowable curvature range, preventing the cable from being excessively bent.

[0031] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A dynamic cable anti-bending device suspension angle adjustment device, comprising a bracket (1), wherein a mounting groove (14) is arranged on the bracket (1); characterized in that: Also includes: A connecting component (11) is located above the mounting groove (14), a bending preventer (12) is provided on the connecting component (11), and a dynamic cable (13) is connected to the bending preventer; and a suspension angle adjustment mechanism, which is arranged on the inner wall of the installation groove (14) and is used to adjust the suspension angle of the anti-bending device (12) along the cable arrangement direction and perpendicular to the cable arrangement direction; The suspension angle adjustment mechanism comprises a support member (15) arranged on the inner wall of the installation groove (14), a central rotating component (2) rotatably arranged on the support member (15), an inner rotating guide member (3) rotatably arranged on the inner wall of the installation groove (14), and an outer rotating guide member (4) rotatably arranged on the inner wall of the installation groove (14), wherein the outer rotating guide member (4) and the central rotating component (2) are rotatably connected; the rotation direction of the inner rotating guide member (3) is the same as the rotation direction of the central rotating component (2) on the support member (15), the rotation center line of the outer rotating guide member (4) passes through the rotation center point of the central rotating component (2), and the rotation directions of the outer rotating guide member (4) and the inner rotating guide member (3) are perpendicular.

2. The dynamic cable anti-bending device suspension angle adjustment device according to claim 1 is characterized in that: A sliding member b (18) is arranged on the supporting member (15), a sliding groove b is arranged on the outer peripheral wall of the bottom of the central rotating member (2), and the sliding member b (18) is slidably connected with the sliding groove b.

3. The dynamic cable anti-bending device suspension angle adjustment device according to claim 1, characterized in that: The bracket (1) is provided with a servo motor a (5) and a servo motor b (6) for driving the inner rotating guide member (3) and the outer rotating guide member (4) to rotate; the servo motor a (5) is provided with a wave sensor (7) and a servo motor controller a (8); the servo motor b (6) is provided with a servo motor controller b (9) and a single chip computer (10).

4. The dynamic cable anti-bending device suspension angle adjustment device according to claim 1, characterized in that: The outer rotating guide member (4) is located outside the inner rotating guide member (3), and arc grooves are arranged on both the inner rotating guide member (3) and the outer rotating guide member (4), and the two arc grooves are arranged on two vertical planes perpendicular to each other. A sliding groove a is arranged on the outer peripheral wall of the central rotating component (2), and the sliding groove a and the sliding groove b are respectively arranged on two vertical planes perpendicular to each other. A sliding member a (17) is arranged to slide in the sliding groove a, and a connecting rod (16) is arranged at the bottom of the connecting component (11), and the connecting rod (16) passes through the arc grooves on the inner rotating guide member (3) and the outer rotating guide member (4) and is connected to the sliding member a (17).

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