High and low temperature resistant cable for vessel

Abstract

The invention discloses a high and low temperature resistant cable for a vessel, and relates to the technical field of cables, the high and low temperature resistant cable comprises an outer cladding layer, wire cores uniformly distributed in the outer cladding layer and a flexible filling layer tightly wrapping the wire cores, an interval inner layer is arranged between the outer cladding layer and the flexible filling layer, and when the cable is twisted to a large extent, the interval inner layer is arranged between the outer cladding layer and the flexible filling layer. Due to the fact that stress on a distortion center point is serious, if no space exists in the cable to buffer distortion deformation of the distortion center point, a wire core can be synchronously subjected to serious distortion force, and when the interval inner layer formed by spirally stacking and combining the multiple sets of rubber sheets at equal angles transmits the distortion force, the cable core is not prone to deformation. When the spiral rubber sheets are twisted, the two adjacent spiral rubber sheets are subjected to staggered secondary deformation, the original tightening state is converted into the expanding state, and strong twisting force concentrated at the twisting center can be transmitted to the two sides of the rubber sheets by utilizing the tightness of the spiral rubber sheets, so that the twisting force concentrated at the twisting center is primarily dispersed and weakened.

Description

Technical Field

[0001] The invention relates to the technical field of cables, in particular to a high and low temperature resistant cable for ships. Background Art

[0002] With the increasing number of projects such as underwater operations, detection, laying cables and optical fibers, the performance requirements for cables are also increasing. They not only need to meet the basic needs of power supply, but also have requirements for video and signal transmission, tension, longitudinal and lateral watertightness, etc. In this context, optoelectronic composite cables, as a communication cable that combines the functions of optical fiber communication and cable transmission, are highly favored due to their long transmission distance, good anti-interference ability, high bandwidth, and space saving.

[0003] The current drag series composite cables have not yet reached the ideal level in terms of production technology and comprehensive performance. In the marine environment, cables need to meet the requirements of power supply, as well as video and signal transmission, tension, longitudinal and lateral watertightness and other challenges. The current solution is usually to separate multiple cables or cables from tension elements. However, this method not only increases the cost output of cable components, but also increases the difficulty of cable laying operations; Ship cables not only need to be used at high intensity on ships, but also enter the deep sea with underwater operations, where they will be frequently dragged and frequently rub against hard objects such as seabed reefs and ships. Therefore, the requirements for the cable's torque resistance, flexibility, and secondary protection performance are relatively high; In addition, there are also requirements for ship cables to withstand high and low temperatures. Therefore, there is a large temperature difference between the sea surface and the seabed. The existence of the temperature difference means that the cables that enter the deep seabed from the sea surface need to withstand the large temperature difference stimulation, and will quickly change from thermal expansion to cold contraction. This has greater requirements on the expansion and contraction performance of the material. Traditional ship cables are prone to different expansion and contraction ratios under long-term high and low temperature stimulation, thereby forming a certain regional distortion and affecting the strength.

[0004] In view of the above problems, it is urgent to carry out innovative designs based on the original high and low temperature resistant cables for ships. Summary of the invention

[0005] The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present invention is to provide a high and low temperature resistant cable for ships to solve the above-mentioned background technology that the current towing series composite cables have not yet reached the ideal level in terms of production process and comprehensive performance. In the marine environment, in addition to meeting the power supply requirements, the cables must also cope with challenges in video and signal transmission, tension, longitudinal and lateral watertightness, etc. The current solution is usually to separate multiple cables or separate cables from tension elements. However, this method not only increases the cost output of cable components, but also increases the difficulty of cable laying operations.

[0006] To achieve the above object, the present invention provides the following technical solution: A high and low temperature resistant cable for ships, comprising an outer sheath, wire cores evenly distributed inside the outer sheath, and a flexible filling layer that tightly wraps the wire cores, wherein a spacer inner layer is provided between the outer sheath and the flexible filling layer; The spacer inner layer is made of a plurality of groups of rubber sheets combined at equal angles.

[0007] Preferably, the rubber sheet is spirally wound around the outside of the flexible filling layer, and the inside of the rubber sheet is doped with polyethylene polymer material.

[0008] Preferably, an outer groove matching the spiral rubber sheet is formed on an outer wall of the flexible filling layer, and an inner groove matching the spiral rubber sheet is formed on an inner wall of the outer covering layer.

[0009] Preferably, two adjacent rubber sheets are arranged with overlapping edges.

[0010] Preferably, the spacer inner layer is solidly connected to the outer covering layer and the flexible filling layer without any gap.

[0011] Compared with the prior art, the present invention has the following beneficial effects: When the cable is twisted at a large angle, the outer sheath first undergoes an adaptive deformation of shrinking inward and expanding outward at the twist center to adapt to the twisting needs of the cable's internal material. When the traditional composite cable is twisted at a large angle, its high-strength outer sheath shrinks inward and expands outward at the twist center, which will produce a stronger squeezing and pulling effect on the inner layer. This is mainly because the space from the outer layer to the inner layer of the cable is gradually reduced. The greater the twist of the outer layer, the greater the squeezing force of the outer layer on the inner layer. When the cable is twisted to a large extent, due to the severe force on the twisting center, if there is no space inside the cable to buffer the twisting deformation at the twisting center, the wire core will be subjected to a more severe twisting force at the same time. In the present invention, a plurality of groups of rubber sheets are stacked at equal angles to form an interval inner layer. When transmitting the twisting force, a staggered secondary deformation will occur between two adjacent spiral rubber sheets, changing from the original tightened state to an expanded state, and the strong twisting force concentrated at the twisting center can be transmitted to both sides of the rubber sheet by utilizing the tightness of the spiral rubber sheet, so as to achieve the initial dispersion and weakening of the twisting force concentrated at the twisting center. At the same time, the expansion of the two adjacent spiral rubber sheets will further expand the outer sheath and force a certain gap to be opened between the outer sheath, the interval inner layer and the flexible filling layer at the twisting center, so that the flexible filling layer has enough twisting deformation space, and the twisting force will not be concentrated inside the flexible filling layer, so that the wire core will not be rigidly twisted to affect normal use, and the dispersion and weakening of the twisting force concentrated at the twisting center is further achieved. In addition, the inner layer of the spacer, which is made of several groups of rubber sheets stacked spirally at equal angles, is tightly stacked together. Even when it is affected by hard damage, such as scratches, wear, etc., the spiral rubber sheet can avoid hard scratches to a certain extent. At the same time, when the outer sheath is damaged, the inner layer of the spacer can also temporarily act as the outer sheath to perform basic functions such as insulation protection, moisture-proof and waterproof, and wear-resistant, thereby avoiding the problem of direct exposure of the flexible filling layer and the wire core due to damage to the outer sheath. Moreover, in the present invention, the inner layer of the spacer, which is made of several groups of rubber sheets stacked spirally at equal angles, has a certain gap. In the case of a large temperature difference, the spiral contraction and expansion can effectively adapt to the rapid expansion and contraction caused by the temperature difference, thereby avoiding regional distortion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a first stereoscopic schematic diagram of the present invention; Figure 2 It is a second stereoscopic schematic diagram of the present invention; Figure 3 It is a schematic diagram of the connection structure between the spacer inner layer and the flexible filling layer of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the inner layer of the spacer of the present invention; Figure 5 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0013] In the figure: 1. Outer covering layer; 2. Spacer inner layer; 3. Wire core; 4. Flexible filling layer. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figure 1-5 The present invention provides a technical solution: a high and low temperature resistant cable for ships, comprising an outer sheath 1, a wire core 3 evenly distributed inside the outer sheath 1, and a flexible filling layer 4 tightly wrapping the wire core 3, and a spacer inner layer 2 is arranged between the outer sheath 1 and the flexible filling layer 4; The spacer inner layer 2 is made of a plurality of rubber sheets combined at equal angles.

[0016] The rubber sheet is spirally wound around the outside of the flexible filling layer 4, and the inside of the rubber sheet is doped with polyethylene polymer material.

[0017] The outer wall of the flexible filling layer 4 is provided with an outer groove matching the spiral rubber sheet, and the inner wall of the outer covering layer 1 is provided with an inner groove matching the spiral rubber sheet.

[0018] Two adjacent rubber sheets are arranged with overlapping edges.

[0019] The spacer inner layer 2 is solidly connected to the outer covering layer 1 and the flexible filling layer 4 without any gap.

[0020] During operation, the outer sheath 1 presses the spacer inner layer 2 made of several groups of rubber sheets spirally stacked at equal angles onto the outside of the flexible filling layer 4, the core 3 is wrapped inside the flexible filling layer 4, and there is no gap between the flexible filling layer 4, the spacer inner layer 2 and the outer sheath 1. The cable has high integrity and integration, and has the advantages of excellent compressive strength and high deformation recovery performance.

[0021] When the cable is twisted at a large angle, the outer sheath 1 first undergoes an adaptive deformation of shrinking inward and expanding outward at the twisting center to adapt to the twisting needs of the cable's internal material. When the traditional composite cable is twisted at a large angle, its high-strength outer sheath 1 shrinks inward and expands outward at the twisting center, which will produce a stronger squeezing and pulling effect on the inner layer. This is mainly because the space from the outer layer to the inner layer of the cable is gradually reduced. The greater the twisting of the outer layer, the greater the squeezing force of the outer layer on the inner layer. Secondly, when the cable is twisted to a large extent, due to the severe force on the center of the twist, if there is no space inside the cable to buffer the twisting deformation at the center of the twist, the core 3 will be simultaneously subjected to a more severe twisting force. In the present invention, the spacing inner layer 2 is made of a plurality of groups of rubber sheets stacked at equal angles to form a staggered secondary deformation when transmitting the twisting force, and the original contracted state is changed to an expanded state, and the strong twisting force concentrated at the center of the twist can be transmitted to both sides of the rubber sheet by utilizing the tightness of the spiral rubber sheet, so as to achieve the initial dispersion and weakening of the twisting force concentrated at the center of the twist. At the same time, the expansion of the two adjacent spiral rubber sheets will cause the outer sheath 1 to further expand outward and force a certain gap to be opened between the outer sheath 1, the spacing inner layer 2 and the flexible filling layer 4 at the center of the twist, so that the flexible filling layer 4 has sufficient twisting deformation space, and the twisting force will not be concentrated inside the flexible filling layer 4, so that the core 3 will not be rigidly twisted to affect normal use, and the dispersion and weakening of the twisting force concentrated at the center of the twist is further achieved.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high and low temperature resistant cable for ships, comprising an outer sheath (1), a wire core (3) evenly distributed inside the outer sheath (1), and a flexible filling layer (4) tightly wrapping the wire core (3), characterized in that: A spacer inner layer (2) is provided between the outer covering layer (1) and the flexible filling layer (4); The spacer inner layer (2) is made of a plurality of groups of rubber sheets combined at equal angles.

2. The high and low temperature resistant cable for ships according to claim 1, characterized in that: The rubber sheet is spirally wound around the outside of the flexible filling layer (4), and polyethylene polymer material is doped inside the rubber sheet.

3. A high and low temperature resistant cable for ships according to claim 2, characterized in that: The outer wall of the flexible filling layer (4) is provided with an outer groove matching the spiral rubber sheet, and the inner wall of the outer covering layer (1) is provided with an inner groove matching the spiral rubber sheet.

4. The high and low temperature resistant cable for ships according to claim 2, characterized in that: Two adjacent rubber sheets are arranged with overlapping edges.

5. The high and low temperature resistant cable for ships according to claim 3, characterized in that: The spacer inner layer (2) is solidly fitted and connected to the outer covering layer (1) and the flexible filling layer (4) without any gap.

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