阅读说明：本技术 海底光缆奇数不等径钢丝复合铜管一体化拱形内铠结构 (Submarine optical cable odd-number unequal-diameter steel wire composite copper pipe integrated arched inner armor structure ) 是由 胥国祥 许人东 张超 范明海 刘斌 李涛 王畅 于文慧 于 2020-03-18 设计创作，主要内容包括：本发明涉及海底光缆奇数不等径钢丝复合铜管一体化拱形内铠结构,包括铜管,钢丝层由第一钢丝、第二钢丝、第三钢丝三种不同外径的钢丝绕不锈钢管轴线环形阵列分布并绞合而成,每种外径的钢丝数量为奇数,第一钢丝、第二钢丝、第三钢丝外径依次减小,第一钢丝设置于钢丝层内层,第二钢丝和第三钢丝设置于钢丝层外层且相互间隔排列,第一钢丝相邻之间彼此相切,第一钢丝与不锈钢管外壁之间存在间隙,钢丝层内层的外壁与钢丝层外层的内壁紧贴。本发明采用奇数根三种不等径钢丝绞合,复合铜管形成一体化式内铠结构,降低钢丝间隙,优化了载荷传递形式,并形成“拱形”结构,大幅提升了海底光缆的抗拉伸性能,抗冲击、压扁性能。(The invention relates to an integral arched inner armor structure of an odd-number unequal-diameter steel wire composite copper pipe of a submarine optical cable, which comprises a copper pipe, wherein a steel wire layer is formed by annularly arranging and twisting three steel wires with different outer diameters, namely a first steel wire, a second steel wire and a third steel wire, around the axis of a stainless steel pipe, the steel wires with different outer diameters are distributed in an array mode, the number of the steel wires with different outer diameters is an odd number, the outer diameters of the first steel wire, the second steel wire and the third steel wire are sequentially reduced, the first steel wire is arranged on the inner layer of the steel wire layer, the second steel wire and the third steel wire are arranged on the outer layer of the steel wire layer and are arranged at intervals, the first steel wires are adjacent and tangent to each other. According to the invention, odd three different-diameter steel wires are stranded, and the composite copper pipe forms an integrated inner armor structure, so that the steel wire gaps are reduced, the load transfer form is optimized, an arch structure is formed, and the tensile resistance, impact resistance and flattening performance of the submarine optical cable are greatly improved.)

1. The odd-number unequal-diameter steel wire composite copper pipe integrated arched inner armor structure of the submarine optical cable comprises a steel wire layer sleeved outside a stainless steel pipe and a copper pipe sleeved outside the steel wire layer, it is characterized in that the steel wire layer is formed by annularly arraying and twisting three steel wires with different outer diameters, namely a first steel wire, a second steel wire and a third steel wire, around the axis of the stainless steel pipe, wherein the number of the steel wires with each outer diameter is odd, the outer diameters of the first steel wire, the second steel wire and the third steel wire are reduced in sequence, the first steel wire is arranged on the inner layer of the steel wire layer, the second steel wires and the third steel wires are arranged on the outer layer of the steel wire layer and are arranged at intervals, the first steel wires are adjacent and tangent to each other, the diameter of the tangent circle at the inner side of each first steel wire is larger than the outer diameter of the stainless steel pipe, namely, a gap is formed between the first steel wire and the outer wall of the stainless steel pipe, and the outer wall of the inner layer of the steel wire layer is tightly attached to the inner wall of the outer layer of the steel wire layer.

2. The submarine optical cable odd-number unequal-diameter steel wire composite copper pipe integrated arched inner armor structure according to claim 1, wherein the first steel wire, the second steel wire and the third steel wire are all high-strength phosphated steel wires.

3. The submarine optical cable odd-number unequal-diameter steel wire composite copper pipe integrated arched inner armor structure according to claim 1, wherein the copper pipe is a seamless copper pipe formed by seamless welding and drawing in a three-gun argon arc welding mode, and the inner wall of the copper pipe is embedded into a gap between the third steel wire and the second steel wire to form a steel wire layer and copper pipe integrated inner armor structure.

4. The submarine optical cable odd-number unequal-diameter steel wire composite copper pipe integrated arched inner armor structure according to claim 1, wherein the copper pipe is a three-gun argon arc welding seamless welding integrated drawing type copper pipe.

Technical Field

The invention relates to a submarine optical cable, in particular to an odd-number unequal-diameter steel wire composite copper pipe integrated arched inner armor structure of the submarine optical cable.

Background

The light submarine optical cable (L W) applied to deep sea mainly depends on the inner armor to bear mechanical external force, and comprises loads such as stretching, impact, flattening, repeated bending and the like generated when the submarine optical cable is manufactured, stored, transported, laid, operated and recovered, meanwhile, the inner armor needs to play the best protection role on a central optical unit, and high-reliability transmission performance of the submarine optical cable for 25 years is ensured.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide an integral arched inner armor structure of an odd-number unequal-diameter steel wire composite copper pipe of a submarine optical cable.

The technical scheme adopted by the invention for solving the technical problems is as follows: an odd-number unequal-diameter steel-plastic composite copper pipe integrated arched inner armor structure of a submarine optical cable comprises a steel wire layer sleeved outside a stainless steel pipe and a copper pipe sleeved outside the steel wire layer, the steel wire layer is formed by distributing and twisting three steel wires with different outer diameters, namely a first steel wire, a second steel wire and a third steel wire, around the axis of the stainless steel pipe in an annular array manner, wherein the number of the steel wires with each outer diameter is odd, the outer diameters of the first steel wire, the second steel wire and the third steel wire are reduced in sequence, the first steel wire is arranged on the inner layer of the steel wire layer, the second steel wires and the third steel wires are arranged on the outer layer of the steel wire layer and are arranged at intervals, the first steel wires are adjacent and tangent to each other, the diameter of the tangent circle at the inner side of each first steel wire is larger than the outer diameter of the stainless steel pipe, namely, a gap is formed between the first steel wire and the outer wall of the stainless steel pipe, and the outer wall of the inner layer of the steel wire layer is tightly attached to the inner wall of the outer layer of the steel wire layer.

In the design, three different-diameter steel wires with odd numbers are stranded, and the composite copper pipe forms an integrated inner armor structure, so that the cable is firm and compact, the steel wire gaps are reduced, the load transfer form is optimized, an arch structure is formed, and the tensile resistance, impact resistance and flattening performance of the submarine optical cable are greatly improved.

As a further improvement of the design, the first steel wire, the second steel wire and the third steel wire are all high-strength phosphated steel wires, so that the tensile resistance of the submarine optical cable is greatly improved.

As a further improvement of the design, the copper pipe is a seamless copper pipe formed by drawing after seamless welding is carried out on three-gun argon arc welding, and the inner wall of the copper pipe is embedded into a gap between the third steel wire and the second steel wire to form an inner armor structure integrating a steel wire layer and the copper pipe. The integrated structure further reduces the steel wire gap, so that the structure is firm and compact, and the mechanical performance of the submarine optical cable is greatly improved.

As a further improvement of the design, the copper pipe is a three-gun argon arc welding seamless welding integrated drawing type copper pipe. High strength and high water resistance.

The invention has the beneficial effects that: according to the invention, odd three different-diameter steel wires are stranded, and the composite copper pipe forms an integrated inner armor structure, so that the steel wire gaps are reduced, the load transfer form is optimized, an arch structure is formed, and the tensile resistance, impact resistance and flattening performance of the submarine optical cable are greatly improved. Adopt three kinds of inequality steel wire transposition, compare in the equal diameter steel wire transposition structure, show and improve the steel wire volume and account for the ratio, under the prerequisite of equal cable load member sectional area, promoted submarine cable stretch-proofing performance by a wide margin, adopt three kinds of inequality steel wire transposition of odd numbers, from the cross-section, always can guarantee that first steel wire when receiving lateral pressure, its counterpoint always has two first steel wire load, has optimized the impact and has flattened load transmission form, has promoted submarine cable shock resistance, flattening performance.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic cross-sectional structure of the present invention.

In the figure, 1 is a stainless steel pipe, 2 is a copper pipe, 3 is a second steel wire, 4 is a third steel wire, and 5 is a first steel wire.

Detailed Description

The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.