CN118220408A

CN118220408A - Nonlinear anchor chain and fiber cable mooring system for adjusting mooring weight

Info

Publication number: CN118220408A
Application number: CN202410644061.5A
Authority: CN
Inventors: 叶琦; 吴国; 窦瑞; 方智超; 潘徐杰; 苏凌宇; 霍鹏飞; 陈巍旻
Original assignee: Shanghai Wison Offshore and Marine Co Ltd
Current assignee: Shanghai Wison Offshore and Marine Co Ltd
Priority date: 2024-05-23
Filing date: 2024-05-23
Publication date: 2024-06-21
Anticipated expiration: 2044-05-23
Also published as: CN118220408B

Abstract

The application relates to a nonlinear anchor chain and a fiber cable mooring system for adjusting mooring weight, which can reduce the risks of fiber cable water outlet and bottoming, wherein the nonlinear anchor chain comprises a first anchor chain, a second anchor chain and a third anchor chain which are sequentially connected, and the weight of the first anchor chain in unit length and the weight of the third anchor chain in unit length are smaller than those of the second anchor chain in unit length; the first anchor chain comprises a plurality of first anchor rings which are connected in sequence, the second anchor chain comprises a plurality of second anchor rings which are connected in sequence, the third anchor chain comprises a plurality of third anchor rings which are connected in sequence, and the shapes of the first anchor rings, the second anchor rings and the third anchor rings are the same; the diameter of the bar of the first anchor ring is equal to that of the bar of the third anchor ring and smaller than that of the bar of the second anchor chain; the first anchor ring, the second anchor ring and the third anchor ring are elliptical rings, and the ratio of the major axis to the minor axis of the elliptical rings is the same; the long axis of the elliptical ring is smaller than the long axis of the second anchor ring along the length direction of the nonlinear anchor chain.

Description

Nonlinear anchor chain and fiber cable mooring system for adjusting mooring weight

Technical Field

The application relates to the field of marine engineering of ships, in particular to a nonlinear anchor chain and fiber cable mooring system for adjusting mooring weight.

Background

With the promotion and development of renewable energy technologies, wind power is increasingly applied to energy systems, and floating fan technologies are rapidly developed.

The mooring system of the floating wind turbine is used for limiting the movement of the wind turbine and resisting external environmental conditions so as to ensure the stable operation of the wind turbine in a specific sea area. As a main part of the mooring system, there is also a great interest in the design and development of mooring lines, wherein the fiber cable can be used as a material of the mooring line, which has the advantages of high strength, light weight, corrosion resistance, etc., but the fiber cable has poor wear resistance compared with the traditional catenary, so that friction between the fiber cable and the seabed is avoided as much as possible, and the wear of the material is reduced. Actual engineering typically employs floats to raise the position of the fiber cables. In addition, the fiber cable is easy to age due to the irradiation of ultraviolet rays in sunlight, and in shallow water, in order to avoid the fiber cable approaching the water surface or floating out of the water surface due to overlarge buoyancy, a counterweight is needed to balance the buoyancy and the gravity of marine organisms attached to a mooring system so as to achieve the purposes of adjusting the whole weight and balancing the buoyancy.

However, the inventor practices found that the weight solution in the conventional art does not well meet the requirement that the fiber cable neither bottom out nor float out of the water during the life of the floating wind turbine, and that the fiber cable still runs the risk of bottoming out or water.

Disclosure of Invention

Based on this, it is necessary to propose a non-linear anchor chain for adjusting the mooring weight, which reduces the risk of bottoming out or water out of the fiber cable. A fibre cable mooring system is also presented.

According to one aspect of the application, a nonlinear anchor chain for adjusting mooring weight comprises a first anchor chain, a second anchor chain and a third anchor chain which are sequentially connected, wherein the weight per unit length of the first anchor chain and the weight per unit length of the third anchor chain are smaller than the weight per unit length of the second anchor chain;

The first anchor chain comprises a plurality of first anchor rings which are connected in sequence, the second anchor chain comprises a plurality of second anchor rings which are connected in sequence, and the third anchor chain comprises a plurality of third anchor rings which are connected in sequence, wherein the shapes of the first anchor rings, the second anchor rings and the third anchor rings are the same; the diameter of the rod of the first anchor ring is equal to the diameter of the rod of the third anchor ring and smaller than the diameter of the rod of the second anchor chain;

the first anchor ring, the second anchor ring and the third anchor ring are elliptical rings, and the ratio of the major axis to the minor axis of the elliptical rings is the same; the long axis of the elliptical ring is along the length direction of the nonlinear anchor chain, and the long axes of the first anchor ring and the third anchor ring are smaller than the long axis of the second anchor ring.

In some embodiments, the weight per unit length of the first anchor chain is equal to the weight per unit length of the third anchor chain.

In some embodiments, the length of the first anchor chain and the length of the second anchor chain are equal.

In some embodiments, the first anchor ring and the second anchor ring are detachably connected.

In some embodiments, the second anchor ring is detachably connected to the third anchor ring.

In some embodiments, at least one of the second anchor rings is detachably connected to an adjacent second anchor ring.

In some embodiments, the first, second and third anchor chains are all stainless steel.

According to another aspect of the application, a fiber cable mooring system comprises: a fiber cable connecting the float to the seabed; a float connected to the fiber optic cable; and a nonlinear anchor chain for adjusting mooring weight as claimed in any one of the preceding claims, a first anchor chain of the nonlinear anchor chain being connected to the fiber optic cable.

In some embodiments, the fiber cable comprises a first cable, a shackle, and a second cable, wherein the first cable and the second cable are both movably connected with the shackle, the first cable is connected with the floating body, and the second cable is connected with the seabed; the floater is movably connected to the shackle; the first anchor chain of the nonlinear anchor chain is movably connected to the shackle.

In some embodiments, the shackle includes a first guide pulley and a second guide pulley, the end of the first cable has a first collar that is sleeved on the first guide pulley, and the end of the second cable has a second collar that is sleeved on the second guide pulley.

In the application, in the middle period of marine organism growth, the whole anchor chain is used for balancing buoyancy, so that the risk of fiber cable water outlet is reduced; in addition, the nonlinear change of the sea creature weight attached to the surface of the fiber cable is considered, and the middle section (namely the second anchor chain) of the whole anchor chain is set to be the maximum weight per unit length, so that the second anchor chain can quickly bottom in the growth middle stage of the rapid increase of the sea creature weight, thereby quickly balancing the increase of the sea creature weight and reducing the risk of the fiber cable bottom.

Drawings

Fig. 1 is a schematic view showing a structure of a nonlinear anchor chain for adjusting mooring weight according to an embodiment of the present application.

Fig. 2 is a schematic structural view of a fiber cable mooring system according to an embodiment of the application in the early growth of marine organisms.

Fig. 3 is a schematic structural view of a fiber cable mooring system according to an embodiment of the application in marine growth metaphase.

Fig. 4 is a schematic structural view of a fiber cable mooring system according to an embodiment of the application at a later stage of marine growth.

Reference numerals illustrate:

10. A nonlinear anchor chain; 110. a first anchor chain; 111. a first anchor ring; 120. a second anchor chain; 121. a second anchor ring; 130. a third anchor chain; 131. a third anchor ring; 20. a fiber cable; 210. a first cable; 211. a first collar; 220. shackle off; 221. the first guide wheel; 222. the second guide wheel; 230. a second cable; 231. a second collar; 30. a float; 40. a floating body; 50. the seabed.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

As described in the background art, in a fiber cable mooring system used in shallow water, a float is required to be arranged on a fiber cable to raise the position of the fiber cable so as to avoid the problem that the fiber cable is easily aged due to the irradiation of ultraviolet rays in sunlight; and in order to avoid that the fiber cable approaches the water surface or floats out of the water surface due to excessive buoyancy, a counterweight is also required to be arranged.

One type of counterweight that is often used is an anchor chain. The anchor chain comprises a plurality of anchor rings which are connected in sequence along the length direction of the anchor chain. The anchor chain is usually made of a material having a certain self weight, such as steel.

In particular, in use the fibre cable connects the seabed with the float, and the anchor chain is connected to the fibre cable and submerged. The anchor chain can balance the buoyancy given by the floater and the fiber cable by means of the self weight of the anchor chain, so that the fiber cable is prevented from approaching the water surface or floating out of the water surface due to overlarge buoyancy. The float may be any device that needs to be moored in shallow water. Optionally, the float comprises a floating fan, but is not limited thereto.

Taking the example of a floating wind turbine, the inventors have found that marine growth can continue to attach to the lines, floats and weights during the life of the floating wind turbine, and thus the weight of the mooring system is dynamically changing. The counterweight in the prior art cannot well meet the requirement that the fiber cable neither bottoms out nor goes out. Therefore, how to balance the weight of the entire mooring system by means of counterweights, so that the fiber cable neither bottoms out nor floats out of the water, is a problem to be solved.

In view of the above problems, an aspect of the present application proposes a nonlinear anchor chain for adjusting mooring weight, which is applied to a fiber cable mooring system, and is capable of adapting to dynamic changes of the weight of the mooring system, thereby meeting the requirement that the fiber cable neither bottoms out nor goes out. The following detailed description is provided in connection with the accompanying drawings.

Referring to fig. 1 to 4, wherein fig. 1 is a schematic view illustrating a structure of a non-linear mooring chain 10 for adjusting mooring weight according to an embodiment of the present application, fig. 2 to 4 are views illustrating states of a fiber cable mooring system constructed based on the non-linear mooring chain 10 according to the present application before, during and after growth of marine organisms.

As shown in fig. 1, a nonlinear anchor chain 10 according to an embodiment of the present application includes a first anchor chain 110, a second anchor chain 120 and a third anchor chain 130 connected in sequence, wherein the weight per unit length of the first anchor chain 110 and the weight per unit length of the third anchor chain 130 are smaller than the weight per unit length of the second anchor chain 120. First anchor chain 110 is for connection to fiber cable 20 (see fig. 2).

The weight per unit length means a weight per unit length in the length direction of the nonlinear anchor chain 10. The weight per unit length is usually expressed in tons/meter. Taking a unit length of 1 meter as an example, the weight per unit length of the first chain 110 being less than the weight per unit length of the second chain 120 means that the weight of the first chain 110 per 1 meter length is less than the weight of the second chain 120 per 1 meter length. Similarly, the weight of third chain 130 per 1 meter length is less than the weight of second chain 120 per 1 meter length. The meaning of weight per unit length is exemplified by 1 meter per unit length; but the unit length is not limited to the above examples.

In this way, the self weight of the entire nonlinear anchor chain 10 does not change linearly as its length increases in its length direction; and the entire nonlinear anchor chain 10 is divided into three anchor chains based on the change rule of unit weight thereof, and the unit length weight of the second anchor chain 120 located in the middle is the largest.

The following details how the nonlinear anchor chain 10 accommodates dynamic changes in weight of the mooring system and meets the requirements of not bottoming out and running out the fiber optic cable 20.

As shown in fig. 2 to 4, the fiber rope mooring system constructed based on the nonlinear anchor chain 10 of the present application comprises the nonlinear anchor chain 10, the fiber rope 20, and the float 30 described above, wherein the fiber rope 20 is used to connect the float 40 with the seabed 50, the float 30 is connected to the fiber rope 20 for providing buoyancy, and the first anchor chain 110 of the nonlinear anchor chain 10 is connected to the fiber rope 20 for balancing the buoyancy of the float 30. In a fibre cable mooring system, the nonlinear mooring line 10 is submerged.

Referring to fig. 2, in the early growth stage of marine organisms, the nonlinear anchor chain 10 is submerged, and none of the first, second and third anchor chains 110, 120 and 130 touches the seabed 50 (hereinafter, bottoming). At this time, the entire self weight of the entire nonlinear anchor chain 10 is used to balance the buoyancy of the float 30 so that the fiber optic cable 20 does not go out of the water.

Referring to fig. 3, in the mid-growth period of the marine organism, as the marine organism grows around the fiber cable 20 such that the weight of the fiber cable 20 gradually increases, the increased weight of the marine organism will cause the nonlinear anchor chain 10, the fiber cable 20 and the float 30 to sink.

During sinking of the nonlinear chain 10, the third chain 130 begins to bottom out first, and the weight of the bottoming out portion of the nonlinear chain 10 is no longer used to balance the buoyancy of the float 30. The more the weight of the fiber cable 20 increases, the more the bottoming portion of the nonlinear line 10 is, the less the weight of the portion of the nonlinear line 10 that is used to balance buoyancy, thereby balancing the increased weight of marine organisms.

The cross-section of the fiber optic cable 20 is generally circular. The marine growth surrounds the fiber cable 20 such that the overall diameter of the fiber cable 20 is larger and larger, and the surface area of the fiber cable 20 is larger and larger, thereby creating a larger attachment area and accelerating the growth of the marine growth. The added weight of the marine creature varies non-linearly. The bottoming out speed of third chain 130 will be faster and faster.

In the present application, the weight per unit length of second chain 120 is greater than the weight per unit length of third chain 130. Accordingly, when the second chain 120 starts bottoming after the third chain 130 completely bottoms out, the weight of the portion of the nonlinear chain 10 for balancing buoyancy will be rapidly reduced, thereby being able to balance the rapidly increased weight of the marine organism, thereby avoiding sinking of the fiber optic cable 20 bottoming due to the excessively rapid increase in weight of the marine organism.

Referring to fig. 4, at the late growth stage of the marine organism, both the third chain 130 and the second chain 120 have bottomed out, and only the first chain 110 remains in the portion of the nonlinear chain 10 for balancing buoyancy. But since the added weight of the marine creature is already large at this time, a large counterweight is not required to balance the buoyancy. The use of a first anchor chain 110 having a relatively small weight per unit length has made it possible to balance the entire system, reducing the risk of the mooring lines 20 of the mooring system being run out and bottoming out in shallow water.

The nonlinear anchor chain 10 is used for balancing buoyancy in the middle period of marine organism growth, so that the risk of fiber cable water outflow is reduced; in addition, considering the nonlinear variation of the weight of the marine creature attached to the surface of the fiber optic cable 20, the middle section of the entire anchor chain (i.e., the second anchor chain 120) is set to have the maximum weight per unit length, so that the second anchor chain 120 can rapidly bottom out in the middle of the growth period in which the weight of the marine creature rapidly increases, thereby rapidly balancing the increase in the weight of the marine creature and reducing the risk of the fiber optic cable 20 bottoming out.

It should be noted that, in practical application, the length difference of the first anchor chain 110, the second anchor chain 120 and the third anchor chain 130 is determined according to the specific length of the fiber cable 20, the included angle between the fiber cable 20 and the seabed, the water depth, the growth speed of the marine creature, and the like.

For example, in the case that the length of the fiber cable 20, the angle between the fiber cable 20 and the seabed, the water depth, etc. are uniform, the faster the marine growth speed, the longer the length of the second anchor chain 120, so that the weight of the portion of the nonlinear anchor chain 10 for balancing buoyancy is also more rapidly reduced when the second anchor chain 120 is rapidly bottomed.

That is, based on the design concept of the nonlinear anchor chain 10 of the present application, nonlinear anchor chains 10 of different specifications can be formed. When the nonlinear anchor chains 10 with different specifications are applied in respective use environments, the second anchor chain 120 can be guaranteed to quickly bottom out when the marine organism weight is quickly increased, so that the increase of the marine organism weight is quickly balanced, and the risk of bottoming out of the fiber cable 20 is reduced.

In some embodiments, the weight per unit length of first chain 110 is equal to the weight per unit length of third chain 130. The first chain 110 and the third chain 130 have the same weight per unit length, and the number of parts is reduced when the nonlinear chain 10 is manufactured, so that the machining efficiency can be improved and the manufacturing cost can be reduced.

In some embodiments, the length of first anchor chain 110 and the length of third anchor chain 130 are equal. In the case that the weight per unit length of the first chain 110 is equal to the weight per unit length of the third chain 130, the lengths thereof are also the same. In this way, either the length of the first anchor chain 110 or the third anchor chain 130 may be used to connect to the fiber cable 20, thereby enabling ease of field installation.

In some embodiments, referring to fig. 1, the first anchor chain 110 includes a plurality of sequentially connected first anchor rings 111, the second anchor chain 120 includes a plurality of sequentially connected second anchor rings 121, and the third anchor chain 130 includes a plurality of sequentially connected third anchor rings 131, wherein the first anchor rings 111, the second anchor rings 121, and the third anchor rings 131 are identical in shape, and the bar diameter of the first anchor ring 111 is equal to the bar diameter of the third anchor rings 131 and smaller than the bar diameter of the second anchor chain 120.

Alternatively, as shown in fig. 1, each anchor ring is formed by bending a cylindrical bar material and has the same shape. The bar diameter of second chain 120 is maximized so that the weight per unit length of second chain 120 can be maximized.

Optionally, the first anchor ring 111, the second anchor ring 121 and the third anchor ring 131 are elliptical rings, and the ratio of the major axis to the minor axis of each anchor ring is the same; the major axis of the oblong ring is along the length of the nonlinear anchor chain 10, and the major axes of both the first anchor ring 111 and the third anchor ring 131 are smaller than the major axis of the second anchor ring 121.

The ratio of the major axis to the minor axis of each anchor ring is the same, whereby the first anchor ring 111, the second anchor ring 121, the third anchor ring 131 are elliptical rings of the same shape, while the major axis of each of the first anchor ring 111 and the third anchor ring 131 is smaller than the major axis of the second anchor ring 121. Thus, the second anchor ring 121 is comparable to a scale-up as compared to the first anchor ring 111 and the third anchor ring 131. In this case, the bar diameter of the second anchor ring 121 is maximized so that the weight per unit length of the second anchor chain 120 is also maximized along the length direction of the nonlinear anchor chain 10.

In other embodiments, the first, second, and third anchor rings 111, 121, 131 may not be limited to elliptical rings. For example, they may be replaced by circular rings, rectangular plates.

In some embodiments, the first anchor ring 111 and the second anchor ring 121 are detachably connected; or, the second anchor ring 121 and the third anchor ring 131 are detachably connected; or, at least one second anchor ring 121 is detachably connected with the adjacent second anchor ring 121. The detachable connection may be, for example, via a pin connection.

In the above manner, the length of at least one of the first chain 110, the second chain 120 or the third chain 130 can be flexibly adjusted according to the actual environment and the test data. Thus, based on the design concept of the nonlinear anchor chain 10 of the present application, nonlinear anchor chains 10 of different specifications can be formed.

In some embodiments, the materials of first chain 110, second chain 120, and third chain 130 are all stainless steel. The stainless steel has the advantages of corrosion resistance, easily obtained raw materials and convenient processing and manufacturing.

Referring to fig. 2 to 4, an embodiment of another aspect of the present application proposes a fiber cable mooring system comprising: the nonlinear anchor chain 10, the fiber optic cable 20, and the float 30 of any of the embodiments described above. Wherein the float 30 connects the float 40 to the seabed 50; the float 30 is connected to the fiber optic cable 20; the first anchor chain 110 of the nonlinear anchor chain 10 is connected to the fiber cable 20.

In the fiber rope mooring system, the weight of the nonlinear anchor chain 10 serving as a counterweight changes nonlinearly when the length dimension thereof increases, and the weight of the second anchor chain 120 serving as a counterweight is set to be the maximum weight per unit length, so that when the weight of marine organisms increases rapidly, the second anchor chain 120 can quickly bottom out, thereby rapidly balancing the increase of the weight of the marine organisms and reducing the risk of the fiber rope 20 bottoming out.

In some embodiments, as shown in fig. 2-4, the fiber optic cable 20 includes a first cable 210, a shackle 220, and a second cable 230, each of the first cable 210 and the second cable 230 being movably coupled to the shackle 220, the first cable 210 being coupled to the float 40, and the second cable 330 being coupled to the seabed 50; the float 30 is movably connected to the shackle 220 and the first anchor chain 110 of the nonlinear anchor chain 10 is movably connected to the shackle 220. The securing of the second cable 230 to the seabed 50 may be achieved in a manner known in the art. For example, an anchor is attached to the second cable 230 and anchored to the seabed 50.

By providing the shackle 220, the connection and fixation of the first cable 210 to the seabed 50 and the replacement of the first cable 210 are facilitated, and the connection and fixation of the second cable 230 to the floating body 40 and the replacement of the second cable 230 are facilitated. Also, the shackle 220 provides a convenient node for positioning the float 30 and the nonlinear anchor chain 10, so that the nonlinear anchor chain 10, the fiber optic cable 20, and the float 30 are easily assembled together.

In some embodiments, referring to fig. 2 and 3, shackle 220 includes a first guide pulley 221 and a second guide pulley 222, the end of first cable 210 having a first collar 211, first collar 211 being looped over first guide pulley 221, the end of the second cable having a second collar 231, second collar 231 being looped over second guide pulley 222.

By providing first guide pulley 221 and first collar 211, first cable 210 can be rotatably coupled to shackle 220 and easily separated, thereby facilitating installation and replacement. By providing the second guide pulley 222 and the second collar 231, the second cable 230 can be rotatably coupled to the shackle 220 and easily separated, thereby facilitating installation and replacement.

Finally, it should be noted that, in order to simplify the description, all possible combinations of the features of the above embodiments may be arbitrarily combined, however, as long as there is no contradiction between the combinations of the features, the description should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. The nonlinear anchor chain for adjusting mooring weight is characterized by comprising a first anchor chain, a second anchor chain and a third anchor chain which are sequentially connected, wherein the weight of the first anchor chain in unit length and the weight of the third anchor chain in unit length are smaller than those of the second anchor chain in unit length;

2. The non-linear mooring chain for adjusting mooring weight according to claim 1, wherein the weight per unit length of the first mooring chain is equal to the weight per unit length of the third mooring chain.

3. The non-linear anchor chain for adjusting mooring weight according to claim 2, wherein the length of the first anchor chain and the length of the second anchor chain are equal.

4. The non-linear anchor chain for adjusting mooring weight of claim 1, wherein the first anchor ring and the second anchor ring are detachably connected.

5. The non-linear anchor chain for adjusting mooring weight according to claim 1, wherein the second anchor ring and the third anchor ring are detachably connected.

6. A non-linear anchor chain for adjusting mooring weight according to claim 1, wherein at least one of the second anchor rings is detachably connected to an adjacent second anchor ring.

7. The non-linear anchor chain for adjusting mooring weight according to claim 1, wherein the materials of the first, second and third anchor chains are stainless steel.

8. A fiber cable mooring system, comprising:

a fiber cable connecting the float to the seabed;

a float connected to the fiber optic cable; and

A nonlinear anchor chain for adjusting mooring weight as claimed in any one of claims 1-7, a first anchor chain of the nonlinear anchor chain being connected to the fiber optic cable.

9. The fiber optic cable mooring system of claim 8, wherein the fiber optic cable comprises a first cable, a shackle, a second cable, both of which are movably connected to the shackle, the first cable being connected to the float, the second cable being connected to the seabed; the floater is movably connected to the shackle; the first anchor chain of the nonlinear anchor chain is movably connected to the shackle.

10. The fiber optic cable mooring system of claim 9, wherein the shackle comprises a first guide pulley and a second guide pulley, wherein the end of the first cable has a first collar that is sleeved on the first guide pulley, and wherein the end of the second cable has a second collar that is sleeved on the second guide pulley.