CN214624471U

CN214624471U - Flexible wind power control cable

Info

Publication number: CN214624471U
Application number: CN202121193160.4U
Authority: CN
Inventors: 张林锐; 程斌; 李沿; 华健; 蒋晶晶; 郭丽霞
Original assignee: Wuxi Huamei Cable Co ltd
Current assignee: Wuxi Huamei Cable Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-11-05
Anticipated expiration: 2031-05-31

Abstract

The utility model relates to the technical field of cables, particularly, relate to flexible wind power control cable, include: the cable comprises a conductor wire core, a wrapping layer and a filling layer; the shielding layer is coated on the outer wall of the wrapping layer; the braided layer is coated on the outer wall of the shielding layer; the outer sheath is coated on the outer wall of the woven layer; the shielding layer comprises a second shielding net and a first shielding net which are distributed from inside to outside, the second shielding net and the first shielding net are distributed in a staggered mode, and two layers of sliding shielding films which can slide relatively are arranged on one side, opposite to the first shielding net and the second shielding net, of each first shielding net so that the first shielding net and the second shielding net can slide in the circumferential direction; the cable is characterized in that the flexibility and the torsion resistance of the cable are improved, the inner core and the outer coating layer of the cable can slide in the circumferential direction by arranging the double layers of the shielding layers which can slide relatively, the torsion resistance of the cable is enhanced, the weaving density of each single layer of the shielding net is low, the bending capacity of the cable is improved, and the cable is softer.

Description

Flexible wind power control cable

Technical Field

The utility model relates to the technical field of cables, particularly, relate to flexible wind power control cable.

Background

The development speed of wind power generation is remarkable as a power generation mode with the most mature technology, the most scale development condition and the most commercial development prospect in new energy, the parameters of each unit are required to be remotely monitored in the wind power generation, a wind power control cable is used for transmitting the parameters to a control center to realize the functions of automatic power generation control, equipment protection and the like, the wind power control cable meets the performance of a common cable, and also needs to meet the requirements of small bending radius, frequent torsion, large environment temperature and operation temperature range, and meanwhile, the cable needs to have the capability of bearing the dead weight and flexibility with a certain length.

At present, a shielding layer is arranged in a wind power control cable, the shielding layer is mostly formed by a copper wire mesh or a copper foil formed by weaving copper wires, the wind power control cable is required to be woven with a coverage rate larger than 90% so as to keep signal transmission stable, but the shielding layer with high weaving density can enhance the strength of the cable in the axial direction, so that the flexibility of the cable is reduced, in addition, the twisting resistance of the shielding layer with high weaving density under the twisting condition is poor, and the service life of the shielding layer with high weaving density is reduced under frequent twisting.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible wind power control cable, include: the conductor wire core is used for transmitting electric signals; the wrapping layer is wound outside the conductor wire core; a filling layer is filled between the wrapping layer and the conductor wire core; the shielding layer is coated on the outer wall of the wrapping layer; the braided layer is coated on the outer wall of the shielding layer; the outer sheath is coated on the outer wall of the woven layer; the shielding layer comprises a second shielding net and a first shielding net which are distributed from inside to outside, the second shielding net is in contact with the wrapping layer, the first shielding net is in contact with the braided layer, and a joint surface of the first shielding net and the second shielding net is provided with two layers of sliding shielding films which can slide relatively, so that the first shielding net and the second shielding net can slide relatively in the circumferential direction.

Further, the overlapping coverage rate of the first shielding net and the second shielding net is more than 90%.

Further, the weaving angles of the first shielding net and the second shielding net are 65-75 degrees by taking the axis of the cable as a reference.

Furthermore, the slip shielding film is a copper foil with the thickness of 0.1 mm-0.15 mm

Further, the wrapping layer comprises a first wrapping layer and a second wrapping layer which are distributed from inside to outside, and the first wrapping layer and the second wrapping layer are wound in opposite winding directions to be arranged outside the filling layer.

Further, the first wrapping layer is a polyester tape, and the second wrapping layer is a PP tape.

Furthermore, the weaving layer is formed by weaving aramid fibers, and the thickness of the weaving layer is 0.5-0.8 mm.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments in accordance with the teachings of the present invention.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a schematic view of an exemplary embodiment of a flexible wind power control cable of the present invention.

Fig. 2 is a schematic view of a cross-sectional cutaway exemplary embodiment of a flexible wind power control cable of the present invention.

Fig. 3 is a schematic view of the exemplary embodiment of fig. 2, partially enlarged.

Fig. 4 is a schematic diagram of an exemplary embodiment of a two-layer shielding mesh in the present invention.

Detailed Description

For a better understanding of the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways with any flexible wind power control cable, as the disclosed concepts and embodiments are not limited to any implementation. Additionally, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

The wind power control cable combined with the examples shown in fig. 1-4 aims to increase the flexibility and torsion resistance of the cable, and the inner core and the outer cladding of the cable can relatively slide in the circumferential direction by arranging the double layers of the shielding layers which can relatively slide, so that the torsion resistance of the cable is enhanced, wherein the weaving density of the shielding net of each single layer is low, the strength of the cable in the axial direction can be reduced, and the cable is more flexible.

By means of the achievement of this purpose, as shown in fig. 1 and fig. 2, the present embodiment provides a flexible wind power control cable, which includes a conductor core 1 for electric signal transmission, a wrapping layer 3 wound around the exterior of the conductor core 1, and a filling layer 2 filled between the wrapping layer 3 and the conductor core 1.

The copper guide core in the conductor core 1 can adopt a 5 th copper or tin-plated copper conductor specified in GB/T3956, the outer wall of the copper guide core can adopt a non-hygroscopic material band for lapping or longitudinally wrapping, an insulating material of ethylene propylene rubber is extruded outside, the filling layer 2 can adopt a low-smoke halogen-free flame-retardant rope, a glass fiber rope or a hemp rope, and gaps among the conductor core 1 are filled to ensure the roundness of the surface of the cable.

Further, wrap 3 includes from inside to outside distributed first wrap 31 and second wrap 32, and first wrap 31 and second wrap 32 are around the outside of establishing at filling layer 2 with opposite winding direction.

In this embodiment, the first lapping layer 31 that is located the inlayer is the polyester area, and the polyester area uses the cable axis as the benchmark, and slope 30 ~ 45 twines, and lapping the percentage of coverage is not less than 15%, mainly plays the compact effect of twisting conductor sinle silk 1, is located outer second lapping layer 32 and is the PP area, uses the cable axis as the benchmark, and reverse slope 30 ~ 45 twines, and lapping the percentage of coverage is not less than 15%, mainly plays balanced impedance's effect.

So, two-layer reverse around establishing around covering 3, when cable conductor sinle silk 1 takes place to twist reverse repeatedly, can avoid appearing not hard up condition around covering 3.

As shown in fig. 3 and 4, the shielding layer 4 is coated on the outer wall of the wrapping layer 3, so as to reduce the influence of the external electromagnetic field on the circuit or the communication line on the inner conductor core 1.

Further, the shielding layer 4 comprises a second shielding net 42 and a first shielding net 41 which are distributed from inside to outside, the second shielding net 42 is in contact with the wrapping layer 3, and the first shielding net 41 is in contact with the braid layer 5.

In this embodiment, the first shielding net 41 and the second shielding net 42 may be formed by weaving copper wires, and the diameter of the braided wires is greater than 0.1 mm. Preferably 0.2mm to 0.5 mm. The cable axis is used as a reference, the weaving angles of the first shielding net 41 and the second shielding net 42 are 65-75 degrees, particularly, a large weaving angle in the range of 70-75 degrees is selected, so that the weaving density of the single-layer shielding net is small, and meshes are loose, so that the supporting force of the cable is reduced, the axial strength of the cable is reduced, the cable is softer, the cable is applied to a fan control circuit, the bending radius of the cable is smaller, and the cable can adapt to a narrow installation environment.

Preferably, the overlapping coverage ratio of the first shielding mesh 41 and the second shielding mesh 42 is required to be more than 90%.

Furthermore, two layers of slidable shielding films 43 are disposed on the joint surface of the first shielding net 41 and the second shielding net 42, so that the first shielding net 41 and the second shielding net 42 can slide relatively in the circumferential direction.

In this embodiment, the shielding net and the shielding film play a shielding role together, the sliding shielding film 43 can be made of copper foil, the thickness is 0.1 mm-0.15 mm, the copper foil can be completely coated outside the conductor wire core 1, and when the sliding shielding film is connected to a receiving circuit, equipment or a system, the receiving circuit, the equipment or the system can be surrounded, so that the conductor wire core 1 is prevented from being affected by an external electromagnetic field, and the stability of signal transmission is improved.

The two slipping shielding films 43 may also adopt opposite winding directions.

In an optional embodiment, a lubricating material, specifically graphite powder, is filled between the sliding shielding films 43, so that the shielding effect is not affected, the surfaces of the copper foils are smoothly butted, and after the graphite powder is arranged between the copper foils, the frictional resistance between the two copper foils is smaller.

Thus, when the cable is twisted, the outer layer and the inner layer of the slip shielding film 43 partially slide relative to each other, so that the twisting space can be increased, and the twisting resistance of the cable can be improved.

As shown in fig. 1 to 4, the braid 5 is coated on the outer wall of the shielding layer 4, and the outer sheath 6 is coated on the outer wall of the braid 5.

In this embodiment, the woven layer 5 is woven from aramid filaments, and the thickness of the woven layer 5 is 0.5mm to 0.8mm to enhance the longitudinal tensile strength and tear strength.

The outer sheath 6 can adopt a chloroprene rubber sheath and a thermoplastic elastomer sheath, has better cold resistance and torsion resistance, and improves the overall service life of the cable.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is intended to cover by those skilled in the art various modifications and adaptations of the invention without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the claims.

Claims

1. A flexible wind control cable, comprising:

the conductor wire core is used for transmitting electric signals;

the wrapping layer is wound outside the conductor wire core; a filling layer is filled between the wrapping layer and the conductor wire core;

the shielding layer is coated on the outer wall of the wrapping layer;

the braided layer is coated on the outer wall of the shielding layer;

the outer sheath is coated on the outer wall of the woven layer;

the shielding layer comprises a second shielding net and a first shielding net which are distributed from inside to outside, the second shielding net is in contact with the wrapping layer, the first shielding net is in contact with the braided layer, and a joint surface of the first shielding net and the second shielding net is provided with two layers of sliding shielding films which can slide relatively, so that the first shielding net and the second shielding net can slide relatively in the circumferential direction.

2. The flexible wind control cable of claim 1, wherein the overlapping coverage of the first and second shielding meshes is greater than 90%.

3. The flexible wind power control cable of claim 1, wherein the braiding angles of the first and second shielding meshes are each between 65 ° and 75 ° with respect to the cable axis.

4. The flexible wind power control cable of claim 1, wherein the slip shielding film is a copper foil having a thickness of 0.1mm to 0.15 mm.

5. The flexible wind power control cable according to claim 1, wherein the wrapping layer comprises a first wrapping layer and a second wrapping layer which are distributed from inside to outside, and the first wrapping layer and the second wrapping layer are wound outside the filling layer in opposite winding directions.

6. The flexible wind control cable of claim 5 wherein said first wrapped layer is a polyester tape and said second wrapped layer is a PP tape.

7. The flexible wind power control cable of claim 1, wherein the braid is woven from aramid filaments, the braid having a thickness of 0.5mm to 0.8 mm.