阅读说明：本技术 漂浮电缆 (Floating cable ) 是由 王澤宇 王知辉 于 2021-10-18 设计创作，主要内容包括：本发明涉及漂浮电缆,包括内缆,包括自内而外依次绕包的内芯线缆,抗拉纤维层；以及护套,绕包于内缆外,包括自内而外依次绕包的TPU内护套层,TPU外护套层；其中,TPU内护套层为发泡聚氨酯,TPU外护套层为实体聚氨酯。本发明的TPU发泡层与实体TPU层,是电缆整体密度降低的同时保证电缆护套的整体机械强度、平整度和光滑度,有效降低水下设备拖拽时的运行阻力,确保水下设备与母体连接的牢度和安全性。(The invention relates to a floating cable, which comprises an inner cable, an inner core wire cable and a tensile fiber layer, wherein the inner core wire cable and the tensile fiber layer are sequentially wrapped from inside to outside; the sheath is wrapped outside the inner cable and comprises a TPU inner sheath layer and a TPU outer sheath layer which are sequentially wrapped from inside to outside; the TPU inner sheath layer is made of foamed polyurethane, and the TPU outer sheath layer is made of solid polyurethane. The TPU foaming layer and the entity TPU layer ensure the integral mechanical strength, flatness and smoothness of the cable sheath while reducing the integral density of the cable, effectively reduce the running resistance when underwater equipment is dragged, and ensure the fastness and safety of the connection between the underwater equipment and a parent body.)

1. A buoyant cable, comprising

An inner cable (10) comprising a wrapping in turn from inside to outside

The inner core of the cable is provided with a cable core,

a tensile fibre layer (100); and

the sheath (20) is wrapped outside the inner cable (10) and comprises a plurality of layers which are sequentially wrapped from inside to outside

A TPU inner jacket layer (200),

a TPU outer jacket layer (300);

the TPU inner sheath layer (200) is made of foamed polyurethane, and the TPU outer sheath layer (300) is made of solid polyurethane.

2. The buoyant cable according to claim 1 wherein the foamed polyurethane comprises, by weight, 62-80% of TPU particles, 18-30% of ethylene acrylic resin, and 2-8% of microsphere foaming agent.

3. The buoyant cable of claim 1 wherein said inner core cable comprises at least one of a power wire pair, a signal twisted wire pair, an optical fiber, and a coaxial wire.

4. The buoyant cable of claim 1 wherein the tensile fiber layer (100) is a tensile fiber braid.

5. The buoyant cable of claim 1 wherein the TPU inner jacket layer (200) has a density of 0.55 to 0.85g/cm³。

6. The buoyant cable of claim 1 wherein the TPU outer jacket layer (300) has a thickness of 0.4mm to 1 mm.

7. The buoyant cable of claim 3 wherein the inner core cable has two co-located shielded data lines (110) and two co-located power lines (120).

8. The buoyant cable according to claim 7 wherein the spacing between any shielded data line (110) and its adjacent power line (120) is provided with a tensile fill (140).

The TPU foaming is characterized by comprising 62-80 wt% of TPU particles, 18-30 wt% of ethylene acrylic resin and 2-8 wt% of microsphere foaming agent.

Technical Field

The invention belongs to the technical field of cables, and particularly relates to a floating cable.

Background

The kind of cable floats at present has TPE foaming sheath cable, and the TPE foaming adds TPu entity sheath cable, and this cable structure is TPU foaming and adds TPU entity sheath. The TPE foaming sheath cable has a rough surface, poor mechanical property of the sheath and large running resistance in water; TPE foaming sheath adds TPU entity sheath cable, though sheath mechanical strength improves, and aquatic running resistance reduces, nevertheless because TPE foaming layer and entity sheath TPU layer are the great material of two kinds of polarity differences, and both layering, two-layer sheath relative slip easily, form the gasbag easily during the bending. At present, foamable polyurethane meeting a stable foundation does not exist in the market.

Disclosure of Invention

In order to solve the problems, the invention adopts the following technical scheme:

a floating cable comprising

Inner cable comprising wrapping from inside to outside in sequence

The inner core of the cable is provided with a cable core,

a tensile fiber layer; and

the sheath is wrapped outside the inner cable and comprises a plurality of layers which are sequentially wrapped from inside to outside

A TPU inner jacket layer,

a TPU outer jacket layer;

the TPU inner sheath layer is made of foamed polyurethane, and the TPU outer sheath layer is made of solid polyurethane.

In some modes, the foaming polyurethane comprises 62-80% of TPU particles, 18-30% of ethylene acrylic resin and 2-8% of microsphere foaming agent in parts by weight.

In some aspects, the inner-core cable includes at least one of a power line pair, a signal twisted pair, an optical fiber, and a coaxial line.

In some forms, the tensile fiber layer is a tensile fiber woven layer.

In some embodiments, the density of the TPU inner sheath layer is 0.55 to 0.85g/cm3.

In some embodiments, the TPU outer jacket layer has a thickness of 0.4mm to 1 mm.

In some aspects, the inner core cable has two shielded data lines and two power lines arranged in the same direction.

In some modes, a tensile filling is arranged at a spacing part between any shielding data wire and the power wire adjacent to the shielding data wire.

The TPU foaming comprises 62-80 wt% of TPU particles, 18-30 wt% of ethylene acrylic resin and 2-8 wt% of microsphere foaming agent.

The invention has the beneficial effects that:

the TPU foaming layer and the entity TPU layer ensure the integral mechanical strength, the flatness and the smoothness of the cable sheath while reducing the integral density of the cable, effectively reduce the running resistance when the underwater equipment is dragged, and ensure the fastness and the safety of the connection between the underwater equipment and a parent body.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of an exemplary structure of the present invention;

FIG. 3 is a schematic view of an inner cable structure according to the present invention;

fig. 4 is a schematic view of the structure of the sheath of the present invention.

In the figure:

10 inner cable, 100 tensile fiber layer, 110 shielding data line, 120 power line, 130 power line sheath, 140 tensile filling, 20 sheath, 200TPU inner sheath layer and 300TPU outer sheath layer.

Detailed Description

The invention is further illustrated below:

the first aspect of this section introduces specific schemes:

a floating cable comprising

The inner cable 10 comprises a plurality of inner and outer sequentially wrapped cables

The inner core of the cable is provided with a cable core,

a tensile fiber layer 100; and

the sheath 20, which is wrapped outside the inner cable 10, comprises a plurality of layers of inner and outer wrapping in sequence

The TPU inner jacket layer 200 is provided with,

a TPU outer jacket layer 300;

wherein, the TPU inner sheath layer 200 is foamed polyurethane, and the TPU outer sheath layer 300 is solid polyurethane. The polyurethane foaming layer (TPU inner sheath layer 200) and the solid polyurethane reinforcing layer (TPU outer sheath layer 300) form an inseparable whole through molecular bonding.

The following is a selection in some examples,

the foaming polyurethane comprises, by weight, 62-80% of TPU particles, 18-30% of ethylene acrylic resin and 2-8% of microsphere foaming agent.

The inner core wire cable at least comprises one of a power wire pair, a signal twisted wire pair, an optical fiber and a coaxial wire; on the premise of not influencing the integral structure, the inner core wire cable can be provided with other forms according to the requirement and is formed by one or more combinations.

The tensile fiber layer 100 is a tensile fiber woven layer.

The density of the TPU inner jacket layer 200 is 0.55-0.85 g/cm3.

The thickness of the TPU outer sheath layer 300 is 0.4 mm-1 mm.

The inner core cable has two shielded data lines 110 arranged in the same direction and two power lines 120 arranged in the same direction.

A space between any of the shielded data lines 110 and the power line 120 adjacent thereto is provided with a tensile filler 140.

The second aspect of this section introduces TPU foaming:

the TPU foaming comprises 62-80 wt% of TPU particles, 18-30 wt% of ethylene acrylic resin and 2-8 wt% of microsphere foaming agent.

The third aspect of this section is described with reference to a specific example:

in one embodiment, a floating cable, as shown in FIG. 2, includes

A floating cable comprising

The inner cable 10 comprises a plurality of inner and outer sequentially wrapped cables

The inner core of the cable is provided with a cable core,

a tensile fiber layer 100; and

the sheath 20, which is wrapped outside the inner cable 10, comprises a plurality of layers of inner and outer wrapping in sequence

The TPU inner jacket layer 200 is provided with,

a TPU outer jacket layer 300;

wherein, the TPU inner sheath layer 200 is foamed polyurethane, and the TPU outer sheath layer 300 is solid polyurethane.

The floating cable comprises a cable core, a shielding layer, a reinforcing layer and a sheath layer, wherein the cable core consists of a twisted signal line pair and a power line pair or a power line pair and an optical fiber, or a coaxial signal line pair or a pure power line pair, or the twisted signal line pair, the coaxial signal line, the power line pair and the optical fiber, the shielding layer comprises a braided shield or an aluminum-plastic copper-plastic shield, the reinforcing layer is a fiber braided layer outside the cable core, the sheath comprises a foaming weight reduction layer and an entity reinforcing layer, and an inseparable whole is formed between the polyurethane foaming layer and the entity polyurethane reinforcing layer through molecular bond action.

The tensile fiber layer 100 is arranged by weaving outside the cable core.

In one example, as shown in fig. 3, in any position of the floating cable in cross section, the center connecting line of the two shielded data lines 110 and the center connecting line of the two power lines 120 cross each other by 90 ± 10 °, that is, the 90 ° error floats by 10 °.

A space between any of the shielded data lines 110 and the power line 120 adjacent thereto is provided with a tensile filler 140. This allows the interior of the cable to be filled better.

The shield data line 110 has at least two data lines 150 therein. The data line 150 is formed by twisting 7 × 7 × 1 conductors.

In some examples, the conductors used are all tightly twisted and over class 5 soft conductors. The number of the twisted wire pairs, the power wire pairs, the optical fibers and the coaxial wire pairs is determined according to the transmission function requirement.

In some examples, a shielding layer is arranged between the inner core cable and the TPU inner sheath layer; the shielding layer is composed of a cable core bundling layer, a copper wire shielding layer and a non-woven fabric shielding protective layer

The power cord 120 has a stranded conductor therein and a power cord sheath 130 disposed over the stranded conductor.

The TPU inner jacket layer 200 is foamed with TPU in some ways.

The density of the solid polyurethane before foaming is 1.15g/cm3, and the density after foaming is 0.55-0.85 g/cm3, and the foaming is 48-75%.

The foaming composition of the TPU comprises 62-80 wt% of TPU particles, 18-30 wt% of ethylene acrylic resin and 2-8 wt% of microsphere foaming agent.

As shown in fig. 4, a sheath 20 is further provided to the inner cable 10. The TPU foaming sheath is the same as the entity TPU sheath, and the two layers are integrated into a whole because of the same base material, thereby greatly improving the mechanical property of the product and reducing the running resistance.

The TPU foaming comprises 62-80 wt% of TPU particles, 18-30 wt% of ethylene acrylic resin and 2-8 wt% of microsphere foaming agent. Because the melt strength of the polyurethane after melting is low, the polyurethane is difficult to form, and maleic anhydride and ethylene propylene resin are selected for grafting in order to improve the melt strength. However, the melt strength of the maleic anhydride grafted product is too high to achieve foaming. In order to obtain a stable foam, the proportion of the ethylene acrylic resin must be adjusted according to the proportion of the blowing agent, and the ethylene acrylic resin must be increased by 3% for every 0.5% increase in the blowing agent.

The foamed polyurethane is a key structure for realizing the floating of the cable in water, and the solid polyurethane layer is used for protecting the foamed layer and improving the water tightness and the integral mechanical property of the cable. The thickness of the solid layer is also repeatedly calculated according to the cable requirements, and the thickness of the solid layer is generally controlled to be 0.4 mm-1 mm. The cable is mainly used for transmission of cables and control signals of the underwater vehicle.

The TPU foaming sheath is the same as the entity TPU sheath, and the two layers are integrated into a whole because of the same base material, thereby greatly improving the mechanical property of the product and reducing the running resistance. Main components of the foamable TPU: 62 to 80 percent of TPU particles, 30 to 18 percent of Ethylene Acrylic Acid (EAA) resin and 8 to 2 percent of microsphere foaming agent are evenly mixed.

It will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the general spirit and concept of the invention. All falling within the scope of protection of the present invention. The protection scheme of the invention is subject to the appended claims.