CN220535888U - Resettable inertial device of mooring system - Google Patents

Abstract

The utility model provides a resettable inertial device of a mooring system. The utility model comprises an outer shell and a damping device arranged in the outer shell, wherein the damping device comprises a damper, an inertial element, a combined disc spring and a central spring rod, the central spring rod is arranged in the outer shell, the central spring rod is arranged in parallel with the damper, two ends after parallel connection are respectively connected with the bottom of an upper cable connecting device and the inertial element, the inertial element is connected with the top of a lower cable connecting device, a plurality of combined disc springs are sequentially and tightly sleeved on the central spring rod, and the upper cable connecting device and the lower cable connecting device are connected with a mooring cable. Compared with the existing common damping equipment such as heave plates or pontoons arranged at the bottom, the inertial-to-hold damper has smaller volume and simpler structure, and is suitable for small ocean platforms such as floating fans.

Description

Resettable inertial device of mooring system

Technical Field

The utility model relates to the technical field of mooring systems, in particular to a resettable inertial device of a mooring system.

Background

Cable failure is a common occurrence of floating ocean platforms when subjected to severe sea conditions, and for platforms undergoing oil and gas exploration, once the cable fails, the platform will lose control, possibly drifting and causing damage to the wellhead, thereby presenting serious environmental problems such as oil or gas leakage. Currently, in order to reduce the risk of cable failure, it is common practice to reduce the motion response of the platform by providing pontoons and heave plates to achieve the goal of reducing cable tension. However, these devices are bulky and have undesirable effects. Meanwhile, the existing damping equipment mostly does not consider the problem of influence of mooring ropes connected with the ocean platform, and when the mooring ropes are subjected to impact tension, the mooring system failure phenomenon is easy to occur, so that the operation safety of the platform is influenced. Therefore, the existing device has a plurality of limitations in the application range and effect. The existing device is not easy to replace. Meanwhile, the existing floating platform vibration damper is oversized, so that the resistance in water is oversized, and the stress of the platform and mooring ropes is increased.

Disclosure of Invention

According to the technical problem set forth above, a resettable inertial device for a mooring system is provided that is capable of absorbing the tension of a cable and automatically resetting after the tension has disappeared. Such a device is smaller and more effective in reducing the risk of cable failure than conventional methods. The utility model adopts the following technical means:

the utility model provides a mooring system can restore to throne inertial device, includes the outside casing and sets up the inside damping device of outside casing, damping device includes attenuator, inertial element, combination formula dish spring and center spring pole, center spring pole sets up in the outside casing, and center spring pole and the parallel setting of attenuator, the both ends after the parallel are respectively with go up cable connecting device's bottom inertial element links to each other, inertial element links to each other with lower cable connecting device's top, and a plurality of combination formula dish springs closely cup joint in proper order on center spring pole, go up cable connecting device, lower cable connecting device all links to each other with the mooring rope.

Further, the combined type disc spring comprises a spring plate and an arched friction energy consumption plate, the upper cable connecting device is connected with the spring plate of the uppermost combined type disc spring, and the inertia element is connected with the spring plate of the lowermost combined type disc spring.

Further, the outer housing is a flexible protective housing.

The utility model has the following advantages:

compared with the conventional damping equipment such as a heave plate or a pontoon arranged at the bottom, the inertial damping device has smaller volume and simpler structure, is suitable for small ocean platforms such as floating fans, and can simultaneously reduce the impact tension of cables and the motion response of the platform, thereby effectively reducing and avoiding the occurrence of the phenomenon of cable fracture failure. If the damping device is worn, the ocean platform can be continuously used only by replacing the inertial damper, and the ocean platform is very convenient. The utility model designs a novel inertial-to-volume damper device suitable for mooring cables aiming at the problem of cable failure of the ocean platform, which can better adapt to the ocean environment and ensure the safe operation of the ocean platform.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of the present utility model.

FIG. 2 is a schematic view of the installation position of the present utility model.

FIG. 3 is a diagram of the inertial component of an embodiment of the present utility model.

In the figure, 1: damper, 2: flexible protective housing, 3: inertial element, 4: arcuate friction energy dissipation plate, 5: spring plate, 6: a center spring rod; 7: ocean platform, 8: sea surface, 9: inertial Rong Zuni device, 10: mooring lines; 11. a rack; 12. a pinion gear; 13. a large gear; 14. and (3) a flywheel.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, the embodiment of the utility model discloses a resettable inertial device of a mooring system, which comprises an outer shell and a damping device arranged in the outer shell, wherein the damping device comprises a damper 1, an inertial element 3, a combined disc spring and a central spring rod 6, the central spring rod is arranged in the outer shell, the central spring rod is arranged in parallel with the damper, two ends (i.e. the left end and the right end in fig. 1) after being connected in parallel are respectively connected with the bottom of an upper cable connecting device and the inertial element, the inertial element is connected with the top of a lower cable connecting device, a plurality of combined disc springs are sequentially and tightly sleeved on the central spring rod, and the upper cable connecting device and the lower cable connecting device are connected with a mooring cable.

In this embodiment, the combined disc spring and the damper are connected in parallel to form a complete energy dissipation structure, when the external load is conducted to the parallel structure, the combined disc spring and the damper are simultaneously subjected to the same external force, part of the external force can be eliminated simultaneously, and when the external force disappears, the restoring force of the damper and the combined disc spring can also assist the whole device and the external structure to reset. The inertia element has the functions of inertia adjustment and energy transfer, and external force is conducted to the parallel energy dissipation devices.

Further, the combined type disc spring comprises a spring plate 5 and an arched friction energy dissipation plate 4, the upper cable connecting device is connected with the spring plate of the uppermost combined type disc spring, and the inertia element is connected with the spring plate of the lowermost combined type disc spring. The device comprises a plurality of arc-shaped friction energy dissipation plates, wherein the arc-shaped friction energy dissipation plates are arranged between two spring plates in a back-to-back mode, the two arc-shaped friction energy dissipation plates are in a group, the spring plates are arranged between the adjacent groups of arc-shaped friction energy dissipation plates, and a preset number of arc-shaped friction energy dissipation plates and spring plates are arranged according to the calculation design requirement.

Further, the outer housing is a flexible protective housing 2.

As an alternative embodiment, as shown in fig. 3, the inertial element is a rack-and-pinion inertial element, that is, the flywheel 14 is driven to rotate by the meshing transmission of the rack 11, the pinion 12 and the bull gear 13, so as to achieve the purpose of energy transfer.

In the assembly process, firstly, a spring plate and a central spring rod are welded, an arch-shaped friction energy consumption plate is pre-pressed and connected to the central spring rod in series, the arch-shaped friction energy consumption plate and the spring plate do not slide all the time, and structural adhesive can be used for assembling, so that the rest arch-shaped friction energy consumption plates are combined and connected in series; the damper is connected in parallel with the arched friction energy dissipation plate and the spring plate and then connected in series with the inertia element, two ends of the inertia damper are connected with the mooring cable, a layer of flexible protective sleeve is arranged outside the inertia damper, the protective sleeve is sealed, and the reverse flow of seawater when the inertia damper is influenced by external force can be prevented. And (5) finishing assembly.

The floating ocean platform 7 floats on the sea surface 8, below which mooring lines 10 are connected. When in use, the inertial damping device is arranged on one side of the cable close to the floating ocean platform 7, and the upper and lower parts of the inertial damping device 9 are connected with mooring ropes. When the mooring rope is impacted, the cable can generate larger impact tension, at the moment, the upper cable and the lower cable are mutually stretched, the two ends of the inertial damping device are relatively displaced, the inertial Rong Zuni device generates control force to act on the upper mooring rope and the lower mooring rope, the upper friction plate and the lower friction plate of the disc spring are compressed, so that the disc spring device is compressed, the effect of absorbing the impact tension is achieved, most of internal force is counteracted, the possibility that the structure is damaged under the load of a complex environment is reduced, and when the tension is reduced, the inertial Rong Zuni device can automatically reset.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (3)

1. The utility model provides a mooring system can restore to throne inertial appearance device, its characterized in that includes the outside casing and sets up the inside damping device of outside casing, damping device includes attenuator, inertial element, combination formula dish spring and center spring pole, center spring pole sets up in the outside casing, and center spring pole and attenuator parallel arrangement, the both ends after the parallel connection respectively with go up cable connecting device's bottom inertial element links to each other, inertial element links to each other with lower cable connecting device's top, and a plurality of combination formula dish springs closely cup joint in proper order on center spring pole, go up cable connecting device, lower cable connecting device all link to each other with the mooring rope.

2. A mooring system resettable inertial device according to claim 1, wherein the modular disc springs comprise spring plates and arcuate friction dissipative plates, the upper cable connection means being connected to the spring plates of the uppermost modular disc spring and the inertial member being connected to the spring plates of the lowermost modular disc spring.

3. A mooring system resettable inertial device according to claim 1, wherein the outer hull is a flexible protective hull.