Steel wire rope for marine drilling riser tensioner

Abstract

The utility model discloses a steel wire rope for a marine drilling riser tensioner, which comprises a steel core, six outer-layer strands and high-molecular polymers, the six outer-layer strands surround the periphery of the steel core, and gaps among the six outer-layer strands, gaps between each outer-layer strand and the steel core and gaps inside the steel core are filled with the high-molecular polymers. The outer-layer strands are provided with three structures according to needs. The utility model belongs to the technical field of steel wire ropes for operation of marine riser tensioners of offshore oil drilling platforms, solves the problems of early fatigue, corrosion and insufficient ton-cycle life of steel wire ropes in use in the prior art, and has the advantages of high bearing capacity, wear resistance, fatigue resistance, corrosion resistance, impact resistance and the like. And excellent ton-cycle service life is shown in use.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel wire ropes for operating riser tensioners on offshore oil drilling platforms, and relates to steel wire ropes for operating riser tensioners on offshore drilling platforms. Background Art

[0002] Riser tensioners are devices installed during offshore drilling to ensure the proper operation of risers. They compensate for heave motion caused by waves and maintain constant tension on the riser. The riser tensioner wire rope is a key component in maintaining constant tension on the riser. To maintain this constant tension, the wire rope must meet stringent requirements for structural stability and fatigue resistance. Furthermore, the wire rope must possess excellent wear and corrosion resistance, as well as a high load-bearing capacity.

[0003] The existing steel wire rope used in the riser tensioner of offshore drilling platforms is a 6×36 steel core wire rope. During use, it suffers from problems such as early fatigue, corrosion, and insufficient ton-cycle life, which increases production costs and affects the normal operation of the riser tensioner of offshore drilling platforms. Utility Model Content

[0004] The purpose of the utility model is to provide a steel wire rope for an offshore drilling riser tensioner, which solves the problems of early fatigue, corrosion and insufficient ton-cycle life of the steel wire rope in the prior art.

[0005] The technical solution adopted by the present invention is that the steel wire rope for the marine drilling watertight pipe tensioner is composed of a steel core, six outer strands and a high molecular polymer. The six outer strands are wrapped around the outer circumference of the steel core, and the gaps between the six outer strands, the gaps between each outer strand and the steel core, and the gaps inside the steel core are all filled with high molecular polymer.

[0006] The utility model of the steel wire rope for the marine drilling riser tensioner is also characterized by:

[0007] The first structure of the outer layer strand is that from the center to the outer layer, there are one outer layer strand central steel wire, seven outer layer strand inner layer steel wires, seven outer layer strand second outer layer large wires and seven outer layer strand second outer layer small wires, and fourteen outer layer strand outer layer steel wires. The seven outer layer strand second outer layer large wires and the seven outer layer strand second outer layer small wires are arranged in sequence.

[0008] The second structure of the outer layer strands is that from the center to the outer layer, there are one outer layer strand central steel wire, eight outer layer strand inner steel wires, eight outer layer strand second outer layer large wires and eight outer layer strand second outer layer small wires, and sixteen outer layer strand outer layer steel wires. The eight outer layer strand second outer layer large wires and the eight outer layer strand second outer layer small wires are arranged in sequence.

[0009] The third structure of the outer layer strand is that from the center to the outer layer, there are one outer layer strand central steel wire, nine outer layer strand inner steel wires, nine outer layer strand second outer layer large wires and nine outer layer strand second outer layer small wires, and eighteen outer layer strand outer layer steel wires. The nine outer layer strand second outer layer large wires and the nine outer layer strand second outer layer small wires are arranged in sequence.

[0010] The outer strands are all compacted strands.

[0011] The structure of the steel core is composed of a steel core center strand, six steel core outer strands and a high molecular polymer. The six steel core outer strands surround the outer circumference of the steel core center strand, and the high molecular polymer fills and covers the space between the steel core center strand and the six steel core outer strands and the outer surface.

[0012] The structure of the steel core center strand is that six steel core center strand outer layer steel wires are wrapped around the periphery of one steel core center strand central steel wire.

[0013] The structure of the steel core outer layer strand is that six outer steel wires of the steel core outer layer strand are wrapped around the periphery of one central steel wire of the steel core outer layer strand.

[0014] The beneficial effects of the present invention include the following aspects:

[0015] 1) Compared with the conventional 6×36WS-IWRC steel wire rope, all outer strands of the steel wire rope of this utility model are compacted, which has the advantages of high load-bearing capacity and wear resistance.

[0016] 2) The rope core of the utility model adopts a padded steel core, and the inside and outer strands of the steel wire rope are filled with high molecular polymers. The strands and the strands and the steel core are isolated by high molecular polymers, which has better structural stability and excellent fatigue resistance and impact resistance.

[0017] 3) All steel wires of this utility model are coated with zinc-aluminum alloy, which shows excellent corrosion resistance in marine environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the first cross section of the utility model wire rope (6×K36WS-EPIWRC);

[0019] Figure 2 This is a schematic diagram of the second cross-section of the steel wire rope of the present invention (6×K41WS-EPIWRC).

[0020] In the figure, 1. outer layer strand, 2. steel core, 3. high molecular polymer, 4. center strand of steel core, 5. outer layer strand of steel core, 6. center steel wire of outer layer strand, 7. inner steel wire of outer layer strand, 8. second outer layer large wire of outer layer strand, 9. second outer layer small wire of outer layer strand, 10. outer layer steel wire of outer layer strand, 11. center steel wire of center strand of steel core, 12. outer layer steel wire of center strand of steel core, 13. center steel wire of outer layer strand of steel core, 14. outer layer steel wire of outer layer strand of steel core. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] Reference Figure 1 The overall structure of the utility model is composed of a steel core 2, six outer strands 1 and a polymer 3. The six outer strands 1 are wrapped around the outer circumference of the steel core 2, and the gaps between the six outer strands 1, the gaps between each outer strand 1 and the steel core 2, and the gaps inside the steel core 2 are all filled with the polymer 3; the six outer strands 1 and the steel core 2 are twisted on a rope closing machine, and the polymer 3 is filled in all the gaps inside the steel wire rope by using an online heating method during rope closing. The steel wire rope is twisted in the same direction.

[0023] Among them, the outer layer strand 1 is a compacted strand, composed of 36 to 46 zinc-aluminum alloy coated steel wires, wherein the typical structural expression is K(1-7-7 / 7-14), and arranged from the center to the outer layer are one outer layer strand center steel wire 6 (located in the center), seven outer layer strand inner layer steel wires 7 (located in the inner layer), seven outer layer strand second outer layer large wires 8 and seven outer layer strand second outer layer small wires 9 (all located at the second outer layer at intervals), fourteen outer layer strand outer layer steel wires 10 (located in the outer layer), the seven outer layer strand second outer layer large wires 8 and the seven outer layer strand second outer layer small wires 9 are arranged in sequence, twisted once on a stranding machine, and compacted by a roller mill.

[0024] The steel core 2 is composed of a steel core core strand 4, six steel core outer strands 5, and a polymer 3. The six steel core outer strands 5 are wrapped around the outer circumference of the steel core core strand 4. The steel core core strand 4 and the six steel core outer strands 5 are twisted on a rope closing machine. The polymer 3 is filled and coated between the steel core core strand 4 and the six steel core outer strands 5 and on the outer surface by an extruder.

[0025] The structural expression of the steel core center strand 4 is 1-6, and from the center to the outer layer, there are respectively arranged one steel core center strand center steel wire 11 and six steel core center strand outer layer steel wires 12, that is, the six steel core center strand outer layer steel wires 12 are wrapped around the outer periphery of one steel core center strand center steel wire 11, and are twisted once in the twisting machine.

[0026] The structural expression of each steel core outer layer strand 5 is 1-6, and from the center to the outer layer, there are respectively arranged one steel core outer layer strand central steel wire 13 and six steel core outer layer strand outer layer steel wires 14, that is, the six steel core outer layer strand outer layer steel wires 14 are wrapped around the outer periphery of one steel core outer layer strand central steel wire 13, and are twisted once in the twisting machine.

[0027] The steel wire rope for the marine drilling riser tensioner of the utility model is composed of 216 to 276 steel wires and a liner steel core. It is divided into three typical structures. The three structural expressions are as follows:

[0028] 6×K36WS-EPIWRC (see Figure 1 )、6×K41WS-EPIWRC(see Figure 2 ), 6×K46WS-EPIWRC (illustration omitted). All six outer strands 1 and one steel core 2 are made of zinc-aluminum alloy-coated steel wire. The polymer 3 is a modified material such as polypropylene or polyethylene.

[0029] The manufacturing process of the steel wire rope for the marine drilling riser tensioner of the utility model is as follows:

[0030] 1) Producing outer strands 1 as compacted strands, each outer strand 1 is composed of 36 to 46 zinc-aluminum alloy-coated steel wires. Taking the first structure K (1-7-7 / 7-14) as an example, arranged from the center to the outside are one outer strand center steel wire 6, seven outer strand inner layer steel wires 7, seven outer strand second outer layer large wires 8, seven outer strand second outer layer small wires 9, and fourteen outer strand outer layer steel wires 10. The strands are twisted once on a stranding machine and compacted by a roller mill.

[0031] 2) Producing a steel core 2, which is composed of a steel core core strand 4, six steel core outer strands 5, and a polymer 3. All steel wires are zinc-aluminum alloy-coated steel wires. The steel core core strand 4 and the six steel core outer strands 5 are twisted on a rope closing machine. The polymer is then filled and coated between and on the outer surfaces of the steel core core strand 4 and the six steel core outer strands 5 using an extruder.

[0032] Among them, the steel core center strand 4 has a structure of 1-6, and from the center to the outer layer, there are one steel core center strand center steel wire 11 and six steel core center strand outer layer steel wires 12, which are twisted once in the stranding machine;

[0033] The six steel core outer strands 5 are all structured as 1-6, with one steel core outer strand center wire 13 and six steel core outer strand outer wires 14 arranged from the center to the outer layer, and are twisted once in a stranding machine;

[0034] 3) After twisting, six outer strands 1 and a steel core 2 filled and coated with a polymer 3 are twisted on a rope closing machine. The polymer 3 is filled between the strands inside the steel wire rope using an online heating method. The steel wire rope is twisted in the same direction.

[0035] Example 1

[0036] Each outer strand 1 of this embodiment 1 is composed of 36 zinc-aluminum alloy coated steel wires. Figure 1 The overall structure expression is 6×K36WS-EPIWRC; all use zinc-aluminum alloy coated steel wire, compacted strands and padded steel core.

[0037] According to the above-mentioned overall structure, it is composed of six outer strands 1, a steel core 2 and a high molecular polymer 3. The six outer strands 1 are wrapped around the outer circumference of the steel core 2. The gaps between the six outer strands 1 and the gaps between each outer strand 1 and the steel core 2 are filled with high molecular polymer 3. The six outer strands 1 and the steel core 2 are twisted on a rope closing machine, and the high molecular polymer is filled between the strands inside the steel wire rope by online heating during rope closing. The steel wire rope is twisted in the same direction.

[0038] Among them, the outer layer strand 1 is a compacted strand, and the structural expression is K(1-7-7 / 7-14). From the center to the outer layer, there are one outer layer strand center steel wire 6, seven outer layer strand inner layer steel wires 7, seven outer layer strand second outer layer large wires 8 and seven outer layer strand second outer layer small wires 9, and fourteen outer layer strand outer layer steel wires 10. The seven outer layer strand second outer layer large wires 8 and the seven outer layer strand second outer layer small wires 9 are arranged in sequence, twisted once on a stranding machine, and compacted by a roller mill.

[0039] The steel core 2 is composed of a central steel strand 4, six outer steel strands 5, and a polymer 3. The central steel strand 4 and the six outer steel strands 5 are twisted together on a rope closing machine. The polymer 3 is then filled and coated between and on the outer surfaces of the central steel strand 4 and the six outer steel strands 5 using an extruder. The central steel strand 4 has a structural expression of 1-6 and consists of a central steel wire 11 and six outer steel wires 12, twisted in a single pass on the stranding machine. Each outer steel strand 5 has a structural expression of 1-6 and consists of a central steel wire 13 and six outer steel wires 14, twisted in a single pass on the stranding machine.

[0040] The wire rope in Example 1 has a diameter of 44.5 mm, an EIP strength grade, and a minimum breaking force of 1490 kN. Used in riser tensioners on offshore oil drilling platforms, the maximum load on a single wire rope is 370 kN. After three months of continuous operation, the wire rope was inspected and found to have no broken wires or deformation, confirming that it met technical requirements and exhibited an excellent ton-cycle service life.

[0041] Example 2

[0042] Each outer strand 1 of this embodiment 2 is composed of 36 zinc-aluminum alloy coated steel wires. Figure 1 , the structural expression is 6×K36WS-EPIWRC; all are made of zinc-aluminum alloy coated steel wire, compacted strands and padded steel core.

[0043] According to the above-mentioned overall structure, it is composed of six outer strands 1, a steel core 2 and a high molecular polymer 3. The six outer strands 1 are wrapped around the outer circumference of the steel core 2. The gaps between the six outer strands 1 and the gaps between each outer strand 1 and the steel core 2 are filled with high molecular polymer 3. The six outer strands 1 and the steel core 2 are twisted on a rope closing machine, and the high molecular polymer is filled between the strands inside the steel wire rope by online heating during rope closing. The steel wire rope is twisted in the same direction.

[0044] Among them, the outer layer strand 1 is a compacted strand, and the structural expression is K(1-7-7 / 7-14). From the center to the outer layer, there are one outer layer strand center steel wire 6, seven outer layer strand inner layer steel wires 7, seven outer layer strand second outer layer large wires 8 and seven outer layer strand second outer layer small wires 9, and fourteen outer layer strand outer layer steel wires 10. The seven outer layer strand second outer layer large wires 8 and the seven outer layer strand second outer layer small wires 9 are arranged in sequence, twisted once on a stranding machine, and compacted by a roller mill.

[0045] The steel core 2 is composed of a central steel strand 4, six outer steel strands 5, and a polymer 3. The central steel strand 4 and the six outer steel strands 5 are twisted together on a rope closing machine. The polymer 3 is then filled and coated between and on the outer surfaces of the central steel strand 4 and the six outer steel strands 5 using an extruder. The central steel strand 4 has a structural expression of 1-6 and consists of a central steel wire 11 and six outer steel wires 12, twisted in a single pass on the stranding machine. Each outer steel strand 5 has a structural expression of 1-6 and consists of a central steel wire 13 and six outer steel wires 14, twisted in a single pass on the stranding machine.

[0046] The wire rope in Example 2 has a diameter of 44.5 mm, an EIP strength grade, and a minimum breaking force of 1490 kN. It is used in riser tensioners on offshore oil drilling platforms, with a maximum load of 370 kN per single wire rope. After four months of continuous operation, the wire rope was inspected and found to have no broken wires or deformation, confirming that it met technical requirements and demonstrated an excellent ton-cycle service life.

[0047] Example 3

[0048] Each outer strand 1 of this embodiment 3 is composed of 41 zinc-aluminum alloy coated steel wires. Figure 2, the structural expression is 6×K41WS-EPIWRC; all are made of zinc-aluminum alloy coated steel wire, compacted strands and padded steel core.

[0049] According to the above-mentioned overall structure, it is composed of six outer strands 1, a steel core 2 and a high molecular polymer 3. The six outer strands 1 are wrapped around the outer circumference of the steel core 2. The gaps between the six outer strands 1 and the gaps between each outer strand 1 and the steel core 2 are filled with high molecular polymer 3. The six outer strands 1 and the steel core 2 are twisted on a rope closing machine, and the high molecular polymer is filled between the strands inside the steel wire rope by online heating during rope closing. The steel wire rope is twisted in the same direction.

[0050] Among them, the outer layer strand 1 is a compacted strand, and the structural expression is K(1-8-8 / 8-16). From the center to the outer layer, there are one outer layer strand center steel wire 6, eight outer layer strand inner layer steel wires 7, eight outer layer strand second outer layer large wires 8 and eight outer layer strand second outer layer small wires 9, and sixteen outer layer strand outer layer steel wires 10. The eight outer layer strand second outer layer large wires 8 and the eight outer layer strand second outer layer small wires 9 are arranged in sequence, twisted once on a stranding machine, and compacted by a roller mill.

[0051] The steel core 2 is composed of a central steel strand 4, six outer steel strands 5, and a polymer 3. The central steel strand 4 and the six outer steel strands 5 are twisted together on a rope closing machine. The polymer 3 is then filled and coated between and on the outer surfaces of the central steel strand 4 and the six outer steel strands 5 using an extruder. The central steel strand 4 has a structural expression of 1-6 and consists of a central steel wire 11 and six outer steel wires 12, twisted in a single pass on the stranding machine. Each outer steel strand 5 has a structural expression of 1-6 and consists of a central steel wire 13 and six outer steel wires 14, twisted in a single pass on the stranding machine.

[0052] The wire rope in Example 3 has a diameter of 57.2 mm, an EIP strength grade, and a minimum breaking force of 2370 kN. Used in riser tensioners on offshore oil drilling platforms, the maximum load on a single wire rope is 590 kN. After four months of continuous operation, the wire rope was inspected and found to have no broken wires or deformation, confirming compliance with technical requirements and demonstrating an excellent ton-cycle service life.

[0053] Example 4

[0054] Each outer strand 1 of this embodiment 4 is composed of 41 zinc-aluminum alloy coated steel wires. Figure 2 , the structural expression is 6×K41WS-EPIWRC; all are made of zinc-aluminum alloy coated steel wire, compacted strands and padded steel core.

[0055] According to the above-mentioned overall structure, it is composed of six outer strands 1, a steel core 2 and a high molecular polymer 3. The six outer strands 1 are wrapped around the outer circumference of the steel core 2. The gaps between the six outer strands 1 and the gaps between each outer strand 1 and the steel core 2 are filled with high molecular polymer 3. The six outer strands 1 and the steel core 2 are twisted on a rope closing machine, and the high molecular polymer is filled between the strands inside the steel wire rope by online heating during rope closing. The steel wire rope is twisted in the same direction.

[0056] Among them, the outer layer strand 1 is a compacted strand, and the structural expression is K(1-8-8 / 8-16). From the center to the outer layer, there are one outer layer strand center steel wire 6, eight outer layer strand inner layer steel wires 7, eight outer layer strand second outer layer large wires 8 and eight outer layer strand second outer layer small wires 9, and sixteen outer layer strand outer layer steel wires 10. The eight outer layer strand second outer layer large wires 8 and the eight outer layer strand second outer layer small wires 9 are arranged in sequence, twisted once on a stranding machine, and compacted by a roller mill.

[0057] The steel core 2 is composed of a central steel strand 4, six outer steel strands 5, and a polymer 3. The central steel strand 4 and the six outer steel strands 5 are twisted together on a rope closing machine. The polymer 3 is then filled and coated between and on the outer surfaces of the central steel strand 4 and the six outer steel strands 5 using an extruder. The central steel strand 4 has a structural expression of 1-6 and consists of a central steel wire 11 and six outer steel wires 12, twisted in a single pass on the stranding machine. Each outer steel strand 5 has a structural expression of 1-6 and consists of a central steel wire 13 and six outer steel wires 14, twisted in a single pass on the stranding machine.

[0058] The wire rope in Example 4 has a diameter of 57.2 mm, an EIP strength grade, and a minimum breaking force of 2370 kN. It is used in riser tensioners on offshore oil drilling platforms, with a maximum load of 590 kN per single wire rope. After six months of continuous operation, the wire rope was inspected and found to have no broken wires or deformation, confirming that it met technical requirements and demonstrated an excellent ton-cycle service life.

[0059] Example 5

[0060] Each outer strand 1 of this embodiment 5 is composed of 46 zinc-aluminum alloy coated steel wires, and the structural expression is 6×K46WS-EPIWRC; all of them are zinc-aluminum alloy coated steel wires, compacted strands and padded steel cores.

[0061] According to the above-mentioned overall structure, it is composed of six outer strands 1, a steel core 2 and a high molecular polymer 3. The six outer strands 1 are wrapped around the outer circumference of the steel core 2. The gaps between the six outer strands 1 and the gaps between each outer strand 1 and the steel core 2 are filled with high molecular polymer 3. The six outer strands 1 and the steel core 2 are twisted on a rope closing machine, and the high molecular polymer is filled between the strands inside the steel wire rope by online heating during rope closing. The steel wire rope is twisted in the same direction.

[0062] Among them, the outer layer strand 1 is a compacted strand, and the structural expression is K(1-9-9 / 9-18). From the center to the outer layer, there are one outer layer strand center steel wire 6, nine outer layer strand inner layer steel wires 7, nine outer layer strand second outer layer large wires 8 and nine outer layer strand second outer layer small wires 9, and eighteen outer layer strand outer layer steel wires 10. The nine outer layer strand second outer layer large wires 8 and the nine outer layer strand second outer layer small wires 9 are arranged in sequence, twisted once on a stranding machine, and compacted by a roller mill.

[0063] The steel core 2 is composed of a central steel strand 4, six outer steel strands 5, and a polymer 3. The central steel strand 4 and the six outer steel strands 5 are twisted together on a rope closing machine. The polymer 3 is then filled and coated between and on the outer surfaces of the central steel strand 4 and the six outer steel strands 5 using an extruder. The central steel strand 4 has a structural expression of 1-6 and consists of a central steel wire 11 and six outer steel wires 12, twisted in a single pass on the stranding machine. Each outer steel strand 5 has a structural expression of 1-6 and consists of a central steel wire 13 and six outer steel wires 14, twisted in a single pass on the stranding machine.

[0064] The wire rope in Example 5 has a diameter of 63.5 mm, an EIP strength grade, and a minimum breaking force of 2950 kN. Used in riser tensioners on offshore oil drilling platforms, the maximum load on a single wire rope is 890 kN. After six months of continuous operation, the wire rope was inspected and found to have no broken wires or deformation, confirming that it met technical requirements and exhibited an excellent ton-cycle service life.

[0065] Example 6

[0066] Each outer layer strand 1 of this embodiment 6 is composed of 46 zinc-aluminum alloy coated steel wires, and the structural expression is 6×K46WS-EPIWRC; all of them are zinc-aluminum alloy coated steel wires, compacted strands and padded steel cores.

[0067] According to the above-mentioned overall structure, it is composed of six outer strands 1, a steel core 2 and a high molecular polymer 3. The six outer strands 1 are wrapped around the outer circumference of the steel core 2. The gaps between the six outer strands 1 and the gaps between each outer strand 1 and the steel core 2 are filled with high molecular polymer 3. The six outer strands 1 and the steel core 2 are twisted on a rope closing machine, and the high molecular polymer is filled between the strands inside the steel wire rope by online heating during rope closing. The steel wire rope is twisted in the same direction.

[0068] Among them, the outer layer strand 1 is a compacted strand, and the structural expression is K(1-9-9 / 9-18). From the center to the outer layer, there are one outer layer strand center steel wire 6, nine outer layer strand inner layer steel wires 7, nine outer layer strand second outer layer large wires 8 and nine outer layer strand second outer layer small wires 9, and eighteen outer layer strand outer layer steel wires 10. The nine outer layer strand second outer layer large wires 8 and the nine outer layer strand second outer layer small wires 9 are arranged in sequence, twisted once on a stranding machine, and compacted by a roller mill.

[0069] The steel core 2 is composed of a central steel strand 4, six outer steel strands 5, and a polymer 3. The central steel strand 4 and the six outer steel strands 5 are twisted together on a rope closing machine. The polymer 3 is then filled and coated between and on the outer surfaces of the central steel strand 4 and the six outer steel strands 5 using an extruder. The central steel strand 4 has a structural expression of 1-6 and consists of a central steel wire 11 and six outer steel wires 12, twisted in a single pass on the stranding machine. Each outer steel strand 5 has a structural expression of 1-6 and consists of a central steel wire 13 and six outer steel wires 14, twisted in a single pass on the stranding machine.

[0070] The wire rope in Example 6 has a diameter of 63.5 mm, an EIP strength grade, and a minimum breaking force of 2950 kN. Used in riser tensioners on offshore oil drilling platforms, the maximum load on a single wire rope is 890 kN. After ten months of continuous operation, inspection confirmed that the wire rope had no broken wires or deformation, confirming that it met technical requirements and demonstrated an excellent ton-cycle service life.

Claims

1. Steel wire rope for offshore drilling riser tensioner, characterized by: The invention comprises a steel core (2), six outer strands (1) and a high molecular polymer (3), wherein the six outer strands (1) surround the outer periphery of the steel core (2), and the gaps between the six outer strands (1), the gaps between each outer strand (1) and the steel core (2), and the gaps inside the steel core (2) are all filled with the high molecular polymer (3).

2. The steel wire rope for marine drilling riser tensioner according to claim 1, characterized in that: The first structure of the outer strand (1) is that, from the center to the outer layer, there are arranged one outer strand center steel wire (6), seven outer strand inner layer steel wires (7), seven outer strand second outer layer large wires (8) and seven outer strand second outer layer small wires (9), and fourteen outer strand outer layer steel wires (10), and the seven outer strand second outer layer large wires (8) and the seven outer strand second outer layer small wires (9) are arranged in sequence.

3. The steel wire rope for marine drilling riser tensioner according to claim 1, characterized in that: The second structure of the outer strand (1) is that, from the center to the outer layer, there are arranged one outer strand center steel wire (6), eight outer strand inner layer steel wires (7), eight outer strand second outer layer large wires (8) and eight outer strand second outer layer small wires (9), and sixteen outer strand outer layer steel wires (10), and the eight outer strand second outer layer large wires (8) and the eight outer strand second outer layer small wires (9) are arranged in sequence.

4. The steel wire rope for marine drilling riser tensioner according to claim 1, characterized in that: The third structure of the outer strand (1) is that, from the center to the outer layer, there are arranged one outer strand center steel wire (6), nine outer strand inner layer steel wires (7), nine outer strand second outer layer large wires (8) and nine outer strand second outer layer small wires (9), and eighteen outer strand outer layer steel wires (10), and the nine outer strand second outer layer large wires (8) and the nine outer strand second outer layer small wires (9) are arranged in sequence.

5. The steel wire rope for an offshore drilling riser tensioner according to any one of claims 1 to 4, characterized in that: The outer strands (1) are all compacted strands.

6. The steel wire rope for marine drilling riser tensioner according to claim 1, characterized in that: The structure of the steel core (2) is composed of a steel core center strand (4), six steel core outer strands (5) and a high molecular polymer (3), wherein the six steel core outer strands (5) surround the outer periphery of the steel core center strand (4), and the high molecular polymer (3) fills and covers the space between the steel core center strand (4) and the six steel core outer strands (5) and the outer surface.

7. The steel wire rope for an offshore drilling riser tensioner according to claim 6, characterized in that: The structure of the steel core center strand (4) is that six steel core center strand outer layer steel wires (12) are wrapped around the outer periphery of one steel core center strand center steel wire (11).

8. The steel wire rope for an offshore drilling riser tensioner according to claim 6, characterized in that: The structure of the steel core outer strand (5) is that six steel core outer strand outer layer steel wires (14) are wrapped around the periphery of a steel core outer strand central steel wire (13).

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