A cable flexible sleeve

Abstract

The utility model provides a kind of cable flexible sleeve, inner core pipe, first tensile layer, wear-preventing layer, second tensile layer, fiber protective layer and outer protective layer are sequentially arranged from inside to outside, and make outer protective layer be made of anticorrosive material. Through the above-mentioned cable flexible sleeve, not only can effectively avoid seawater corrosion, but also can prevent external impact and the attachment erosion of marine organisms, and can prevent cable dynamic overbending and prevent seabed abrasion problems from occurring in large wind and wave, and winter ice impact resistance.

Description

Technical Field

[0001] This utility model relates to the field of cable protection, specifically a flexible cable sleeve. Background Technology

[0002] A cable is a rope-like cable made of several or several groups of conductors (at least two conductors in each group) twisted together. Each group of conductors is insulated from each other and is often twisted around a central core. The entire cable is covered with a highly insulating outer layer, which is usually made of polyvinyl chloride, polyethylene, cross-linked polyethylene, rubber and mineral insulating materials, giving the cable the characteristics of being internally energized and externally insulated.

[0003] With the development of offshore wind power projects in my country, cables in seawater are exposed to external impacts and corrosion from marine organisms. Therefore, there is an urgent need for a protective sleeve that can protect cables on the seabed. Utility Model Content

[0004] In view of this, the present invention provides a flexible cable sleeve to protect cables in seawater.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A flexible cable sheath includes: an inner core tube, a first tensile layer, an anti-abrasion layer, a second tensile layer, a fiber protective layer, and an outer protective layer;

[0007] The inner core tube, the first tensile layer, the wear-resistant layer, the second tensile layer, the fiber protective layer, and the outer protective layer are arranged sequentially from the inside to the outside. The outer protective layer is made of corrosion-resistant material.

[0008] Preferably, the inner core tube includes: an inner liner, a skeleton layer, and a covering layer;

[0009] The inner lining layer is placed inside the skeleton layer;

[0010] The covering layer is placed over the skeleton layer.

[0011] Preferably, the skeleton layer is formed by winding steel wire around the inner lining layer.

[0012] Preferably, the inner liner and / or the covering layer are made of any one of polyethylene, polyamide nylon, polyurethane, polyvinylidene fluoride and polymeric resins.

[0013] Preferably, the first tensile layer is formed by multiple fiber strips wound along the axial direction of the inner core tube at a first preset angle.

[0014] The second tensile layer is formed by multiple fiber strips wound in the opposite direction along the axial direction of the inner core tube at a first preset angle.

[0015] Preferably, the fiber tape is made of any one of the following materials: polyester, aramid, basalt, and glass fiber.

[0016] Preferably, the first tensile layer is formed by multiple metal armored steel wires wound along the axial direction of the inner core tube at a second preset angle.

[0017] The second tensile layer is formed by multiple metal armored steel wires wound in the opposite direction along the axial direction of the inner core tube at a second preset angle.

[0018] Preferably, the range of the first preset angle or the second preset angle is 30° to 50°.

[0019] Preferably, the wear-resistant layer is made of any one of polyethylene, polyamide nylon, polyurethane, polyvinylidene fluoride, and polymeric resin.

[0020] Preferably, the fiber protective layer is made of aramid fibers and yarn twisted together.

[0021] Based on the above-described flexible cable sleeve provided by this utility model, an inner core tube, a first tensile layer, an anti-wear layer, a second tensile layer, a fiber protective layer, and an outer protective layer are sequentially arranged from the inside out, and the outer protective layer is made of a corrosion-resistant material. The disclosed flexible cable sleeve can effectively prevent seawater corrosion, protect against external impacts and marine organism adhesion, prevent dynamic bending of the cable and seabed wear during periods of high wind and waves, and resist ice impact in winter. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of a flexible cable sleeve provided in an embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the inner core tube provided in an embodiment of the present utility model;

[0025] Figure 3 A cross-sectional view of the inner core tube provided in an embodiment of this utility model.

[0026] The structure includes an inner core tube 1, an inner lining layer 11, a skeleton layer 12, a covering layer 13, a first tensile layer 2, an anti-wear layer 3, a second tensile layer 4, a fiber protective layer 5, and an outer protective layer 6. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In this application, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] This utility model embodiment provides a flexible cable sleeve, see [link]. Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a flexible cable sleeve, which includes: an inner core tube 1, a first tensile layer 2, an anti-wear layer 3, a second tensile layer 4, a fiber protective layer 5, and an outer protective layer 6;

[0030] The inner core tube 1, the first tensile layer 2, the wear-resistant layer 3, the second tensile layer 4, the fiber protective layer 5, and the outer protective layer 6 are arranged sequentially from the inside to the outside. The outer protective layer 6 is made of corrosion-resistant material.

[0031] It should be noted that the inner core tube 1 of this application is mainly used for placing the cable inside the sleeve and for protecting against external impacts and compression, while the first tensile layer 2 and the second tensile layer 4 mainly enhance the axial tensile performance of the pipe, the anti-wear layer 3 prevents wear between the first tensile layer 2 and the second tensile layer 4, and the fiber protective layer 5 is used to fix the first tensile layer 2 and the second tensile layer 4, and to prevent radial (birdcage) buckling failure of the cable flexible sleeve when axial compression occurs.

[0032] Since the outer protective layer 6 of this application is made of corrosion-resistant material, it not only resists corrosion but also provides some protection for the flexible cable sleeve during transportation and installation.

[0033] In this embodiment of the invention, the inner core tube 1, the first tensile layer 2, the abrasion-resistant layer 3, the second tensile layer 4, the fiber protective layer 5, and the outer protective layer 6 are arranged sequentially from the inside out, and the outer protective layer 6 is made of a corrosion-resistant material. The cable flexible sheath disclosed above can not only effectively prevent seawater corrosion, but also protect against external impacts and the adhesion and erosion of marine organisms. Furthermore, it can prevent dynamic bending of the cable and seabed wear during periods of high wind and waves, and resist ice impact in winter.

[0034] Preferably, the outer protective layer 6 is formed by extrusion coating process of high molecular polymer.

[0035] It should be noted that the outer protective layer 6 is mainly made of polyethylene, polyurethane, nylon, and high-performance, high-wear-resistant chain or network polymers.

[0036] Specifically, the inner core tube 1 includes: an inner liner 11, a skeleton layer 12, and a covering layer 13;

[0037] The inner lining layer 11 is disposed inside the skeleton layer;

[0038] The covering layer 13 is set on the skeleton layer 12.

[0039] It should be noted that by placing the inner lining layer 11 inside the skeleton layer and the covering layer 13 on the skeleton layer 12, the skeleton layer 12 can significantly increase the extrusion resistance and large bending resistance of the inner core tube 1.

[0040] Specifically, the skeleton layer 12 is formed by steel wires wound around the inner lining layer 11.

[0041] It should be noted that the skeleton layer 12 is formed by winding steel wire around the inner lining layer 11, which can further increase the inner core tube 1's resistance to compression and large bending.

[0042] It should also be noted that the inner core tube 1 can be formed simultaneously by two or more extruders along with the skeleton layer 12 during production.

[0043] It is worth noting that in this application, the skeleton layer 12 can be made of other materials as needed, and the wire diameter and pitch of the steel wire can also be selected as needed. Furthermore, it can be customized through surface preheating and softening treatment so that the skeleton layer 12 can be bonded and cured with the inner lining layer 11 and the covering layer 13.

[0044] Specifically, the inner liner 11 and / or the covering layer 13 are made of any one of polyethylene, polyamide nylon, polyurethane, polyvinylidene fluoride and polymeric resins.

[0045] It should be noted that the inner liner 11 and the covering layer 13 can be made of any one of polyethylene, polyamide nylon, polyurethane, polyvinylidene fluoride and polymeric resin, or they can be made of different materials. Those skilled in the art can choose according to their needs.

[0046] Specifically, the first tensile layer 2 is formed by multiple fiber strips wound along the axial direction of the inner core tube 1 at a first preset angle;

[0047] The second tensile layer 4 is formed by multiple fiber strips wound in the opposite direction along the axial direction of the inner core tube 1 at a first preset angle.

[0048] It should be noted that by setting the first tensile layer 2 to be formed by multiple fiber strips wound along the axial direction of the inner core tube 1 at a first preset angle, and setting the second tensile layer 4 to be formed by multiple fiber strips wound along the axial direction of the inner core tube 1 at a first preset angle, the axial tensile performance of the cable flexible sleeve can be further enhanced.

[0049] It should also be noted that both the first tensile layer 2 and the second tensile layer 4 are composed of even-numbered fiber tapes interlaced together.

[0050] Specifically, the fiber tape is made of any one of the following materials: polyester, aramid, basalt, and glass fiber.

[0051] It should be noted that the fiber tape can be made of polyester, aramid, or basalt. Those skilled in the art can rotate any of the materials among polyester, aramid, basalt, and glass fiber to make it according to their needs.

[0052] Preferably, the thickness of the fiber tape is in the range of 0.3mm-5.0mm.

[0053] It should be noted that the thickness of the fiber tape can be 0.3mm, 3.0mm, or 5.0mm. Those skilled in the art can choose any thickness from 0.3mm to 5.0mm according to their needs.

[0054] Specifically, the first tensile layer 2 is formed by multiple metal armored steel wires wound along the axial direction of the inner core tube 1 at a second preset angle.

[0055] The second tensile layer consists of multiple metal armored steel wires wound in the opposite direction along the axial direction of the inner core tube 1 at a second preset angle.

[0056] It should be noted that setting the first tensile layer 2 to be formed by multiple metal armored steel wires wound along the axial direction of the inner core tube 1 at a second preset angle and setting the second tensile layer 4 to be formed by multiple metal armored steel wires wound along the axial direction of the inner core tube 1 at a second preset angle can further enhance the axial tensile performance of the cable flexible sleeve.

[0057] Preferably, the first tensile layer 2 and the second tensile layer 4 are formed by twisting and weaving together materials with a circular or rectangular cross-section.

[0058] The first tensile layer 2 and the second tensile layer 4 of this application are made of braided fiber tape when considering the underwater weight of the cable flexible sleeve.

[0059] Specifically, the range of the first preset angle or the second preset angle is 30° to 50°.

[0060] It should be noted that the first preset angle or the second preset angle can be 30°, 35° or 50°. Those skilled in the art can choose any preset angle from 30° to 50° according to their needs. However, since the smaller the first preset angle or the second preset angle is, the higher its axial tensile strength, but the larger the bending radius of the cable flexible sleeve, this application prefers the first preset angle or the second preset angle to be 30°.

[0061] Specifically, the wear-resistant layer 3 is made of any one of polyethylene, polyamide nylon, polyurethane, polyvinylidene fluoride, and polymeric resin.

[0062] It should be noted that the wear-resistant layer 3 can be made of polyethylene, polyamide nylon, or polyurethane. Those skilled in the art can select any material from polyethylene, polyamide nylon, polyurethane, polyvinylidene fluoride, and polymeric resins to make the wear-resistant layer 3 according to their needs.

[0063] It is worth noting that the wear-resistant layer 3 of this application is typically formed by extrusion molding.

[0064] Preferably, the thickness of the wear-resistant layer 3 ranges from 0.1 mm to 1.0 mm.

[0065] It should be noted that the thickness of the anti-wear layer 3 can be 0.1mm, 0.8mm, or 1.0mm. Those skilled in the art can choose the thickness of the anti-wear layer 3 from 0.1mm to 1.0mm according to their needs.

[0066] Specifically, the fiber protective layer 5 is made of aramid fibers and yarn twisted together.

[0067] It should be noted that the fiber protective layer 5 can be made of aramid fibers and yarn twisted together, or it can be made of other materials. Those skilled in the art can choose according to their needs.

[0068] Preferably, the thickness of the fiber protective layer 5 is 0.3 mm to 1.0 mm.

[0069] It should be noted that the thickness of the fiber protective layer 5 can be 0.3mm, 0.6mm, or 1.0mm. Those skilled in the art can choose the thickness of the fiber protective layer 5 from 0.3mm to 1.0mm according to their needs.

[0070] Preferably, the fiber protective layer 5 can be woven from aramid fibers and yarns twisted together at a winding angle of 70° to 89.5°.

[0071] It should be noted that the fiber protective layer 5 can be formed by twisting aramid fibers and yarn together in the forward direction or in the reverse direction. Those skilled in the art can choose according to their needs.

[0072] It should also be noted that the winding angle can be 70°, 80°, or 89.5°, and those skilled in the art can choose according to their needs.

[0073] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flexible cable sleeve, characterized in that, include: Inner core tube, first tensile layer, wear-resistant layer, second tensile layer, fiber protective layer and outer protective layer; The inner core tube, the first tensile layer, the wear-resistant layer, the second tensile layer, the fiber protective layer, and the outer protective layer are arranged sequentially from the inside to the outside, wherein the outer protective layer is made of corrosion-resistant material.

2. The flexible cable sleeve according to claim 1, characterized in that, The inner core tube includes: an inner liner, a skeleton layer, and a covering layer; The inner lining layer is disposed inside the skeleton layer; The covering layer is fitted onto the skeleton layer.

3. The flexible cable sleeve according to claim 2, characterized in that, The skeleton layer is formed by winding steel wire around the inner lining layer.

4. The flexible cable sleeve according to claim 2, characterized in that, The inner liner and / or the covering layer are made of any one of polyethylene, polyamide nylon, polyurethane, polyvinylidene fluoride and polymeric resins.

5. The flexible cable sleeve according to claim 1, characterized in that, The first tensile layer is formed by multiple fiber strips wound along the axial direction of the inner core tube at a first preset angle. The second tensile layer is formed by multiple fiber strips wound in the opposite direction along the axial direction of the inner core tube at the first preset angle.

6. The flexible cable sleeve according to claim 5, characterized in that, The fiber tape is made of any one of the following materials: polyester, aramid, basalt, and glass fiber.

7. The flexible cable sleeve according to claim 1, characterized in that, The first tensile layer is formed by multiple metal armored steel wires wound along the axial direction of the inner core tube at a second preset angle. The second tensile layer is formed by multiple metal armored steel wires wound in the opposite direction along the axial direction of the inner core tube at the second preset angle.

8. The flexible cable sleeve according to claim 7, characterized in that, The second preset angle ranges from 30° to 50°.

9. The flexible cable sleeve according to claim 1, characterized in that, The wear-resistant layer is made of any one of polyethylene, polyamide nylon, polyurethane, polyvinylidene fluoride, and polymeric resin.

10. The flexible cable sleeve according to claim 1, characterized in that, The fiber protective layer is made of aramid fibers and yarn twisted together.

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