CN223612116U - Novel basalt fiber mechanical resistance cable - Google Patents

Abstract

The utility model belongs to the technical field of cables, and discloses a novel basalt fiber mechanical resistance cable which comprises a wire core, basalt fiber wrapping tape, an inner protective layer, an aluminum foil layer and an outer sheath, wherein the basalt fiber wrapping tape, the inner protective layer, the aluminum foil layer, the first basalt fiber weaving layer and the outer sheath are concentrically arranged and sequentially wrap the periphery of the wire core from inside to outside, and basalt fiber bulked yarns are filled between the wire core and the basalt fiber wrapping tape. The structure of the utility model can reduce the weight of the cable, optimize the conductor resistance, reduce the cable cost, improve the use and the processability of the cable, be lighter and more convenient when laying and installing, be environment-friendly, and have the drag chain test times from 1000 ten thousand times to 1200 ten thousand times, thereby improving the overall mechanical property of the cable and having strong practicability.

Description

Novel basalt fiber mechanical resistance cable

Technical Field

The utility model relates to the technical field of cables, in particular to a novel basalt fiber mechanical resistance cable.

Background

Cables are one of the indispensable infrastructures in modern society, and are widely used in various fields, and have functions of controlling installation, connecting devices, and transmitting power. With the progress of technology and the expansion of application fields, the performance and quality of cables are also continuously improved to meet the requirements of higher levels.

The mechanical performance of the cable has a crucial influence on the normal operation, the service life and the safety of the circuit, and meets the requirements of specific application scenes. In the transportation, installation and use processes of the cable, the cable can be subjected to external forces such as bending, extrusion and stretching, and if the mechanical properties of the cable are poor, faults such as short circuit and open circuit can be caused, so that the normal operation of the equipment is affected. In addition, the cable has poor mechanical properties, cannot resist the damage of external force, and can be damaged and failed due to the action of the external force, so that the service life of the cable is reduced.

Disclosure of utility model

The utility model aims to provide a novel basalt fiber cable with mechanical property resistance, which is simple in structure, easy to realize, environment-friendly, good in mechanical property and strong in practicability.

In order to achieve the aim, the utility model provides a novel basalt fiber mechanical resistance cable which comprises a wire core, basalt fiber wrapping tape, an inner protecting layer, an aluminum foil layer and an outer protecting sleeve, wherein the basalt fiber wrapping tape, the inner protecting layer, the aluminum foil layer, the first basalt fiber wrapping layer and the outer protecting sleeve are concentrically arranged and sequentially wrap the periphery of the wire core from inside to outside, and basalt fiber bulked yarns are filled between the wire core and the basalt fiber wrapping tape.

Further, the wire core comprises a center layer basalt fiber braided wire, and further comprises a first conductor, a second basalt fiber braided wire, a second conductor, a third basalt fiber braided wire and an insulating layer which are concentrically arranged and sequentially coated on the periphery of the center layer basalt fiber braided wire from inside to outside.

Further, the first conductor is a stranded aluminum alloy conductor, and the diameter of aluminum alloy monofilaments in the stranded aluminum alloy conductor is less than or equal to 0.30mm.

Further, the second conductor is a stranded copper alloy conductor, and the diameter of copper alloy monofilaments in the stranded copper alloy conductor is less than or equal to 0.12mm.

Further, the filling volume of the basalt fiber bulked yarn accounts for 10-60% of the inner cavity volume of the basalt fiber wrapping tape.

Further, the number of the wire cores is more than two, and every two adjacent wire cores are tangent.

The basalt fiber adopted in the utility model has excellent mechanical properties, has excellent temperature impact resistance, can keep stable mechanical properties under extreme temperature conditions, and particularly has mechanical properties far higher than those of other inorganic fiber materials under low-temperature and extremely-low-temperature environments. The basalt fiber adopted also has better mechanical performance indexes such as elastic modulus, elongation at break and the like, and the performances enable the basalt fiber to keep better elasticity and toughness when being acted by external force, and the basalt fiber is not easy to break or deform.

In addition, basalt fiber is used as a functional material, the main component of the functional material is natural inorganic material, compared with the common organic polymer material of a cable, the functional material is more environment-friendly, basalt is a product of volcanic activity, and 'greenhouse' gas possibly released in the fiber processing process is discharged in the process of eruption of magma hundreds of years ago, so that wastes can be naturally weathered and degraded. In addition, basalt is still basalt rather than carbon dioxide and other toxic and harmful substances produced by burning other organic matters, has hundred percent inertness, does not have toxic reaction with air and water, does not burn and is explosion-proof.

The utility model has the beneficial effects that the weight of the cable can be reduced, the conductor resistance is optimized, the cost of the cable is reduced, the use and the processability of the cable are improved, the cable is lighter and more convenient to lay and install, the environment is protected, the number of times of drag chain tests is increased from 1000 ten thousand times to 1200 ten thousand times of drag chain times, the overall mechanical property of the cable is improved, and the practicability is strong.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the present utility model will be further described with reference to the accompanying drawings and embodiments, in which the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained by those skilled in the art without inventive effort:

fig. 1 is a schematic cross-sectional view of the cable of the present utility model.

Fig. 2 is an enlarged schematic view of the core of fig. 1.

In the figure, a wire core, a basalt fiber wrapping tape, an inner protective layer, an aluminum foil layer, a first basalt fiber weaving layer, an outer sheath and basalt fiber bulked yarn, wherein the wire core, the basalt fiber wrapping tape, the inner protective layer, the aluminum foil layer, the first basalt fiber weaving layer, the outer sheath and the basalt fiber bulked yarn are respectively arranged in sequence;

101. a basalt fiber braided wire of a central layer; 102, a first conductor, 103, a second basalt fiber woven layer, 104, a second conductor, 105, a third basalt fiber woven layer and 106, an insulating layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.

As shown in fig. 1 to 2, the novel basalt fiber mechanical resistance cable comprises a wire core 1, basalt fiber wrapping tape 2, an inner protecting layer 3, an aluminum foil layer 4 and an outer protecting sleeve 6, wherein the basalt fiber wrapping tape 2, the inner protecting layer 3, the aluminum foil layer 4, a first basalt fiber wrapping layer 5 and the outer protecting sleeve 6 are concentrically arranged and sequentially wrap the periphery of the wire core 1 from inside to outside, and basalt fiber bulked yarns 7 are further filled between the wire core 1 and the basalt fiber wrapping tape 2.

The cable of the present utility model is a cable in which the core 1 mainly functions to transmit current and electric energy. The basalt fiber has strength comparable to that of high-strength S-shaped glass fiber and tensile strength equivalent to that of T300-shaped carbon fiber, the basalt fiber wrapping tape 2 wrapping the wire core 1 can play an insulating role, prevent current leakage and ensure cable safety, can effectively shield electromagnetic interference, protect signal transmission inside the cable from external interference and ensure stability and reliability of signal transmission, and can play roles of fire prevention, moisture prevention and the like, and prevent the wire core 1 from being physically damaged and corroded by environment, so that the service life of the cable is effectively prolonged. When the electric wire and cable are bent, twisted or pulled by external force, the basalt fiber wrapping tape 2 can also disperse stress, so that the wire core 1 is prevented from being damaged. The material of the inner protective layer 3 is environment-friendly ultra-soft polypropylene material, which can ensure the support and fixation between the wire cores 1 and prevent the dislocation of the wire cores.

The outer sheath 6 mainly protects the internal structural components of the cable from external factors, and prevents the internal structure of the cable from being damaged, so that the service life of the cable is prolonged. The material of the outer sheath 6 is a common material in the prior art, and when the material of the outer sheath 6 is selected, the material with good durability is required to be selected, so that the cable can still work normally under severe conditions. In actual selection, the cable is reasonably selected according to specific use environment and performance requirements, and the factors such as mechanical property, electrical insulation property, thermal aging resistance, chemical stability, environmental protection and safety of the material are fully considered. For example, polyurethane (PUR) jackets have excellent mechanical properties suitable for applications requiring dynamic movement and bending, while polyvinyl chloride (PVC) jackets are widely used in a variety of cables due to their low cost, good flexibility, and durability.

In one embodiment of the present utility model, the outer sheath 6 is a semi-extruded vinyl chloride (PVC) coated material, and PVC has good electrical insulation and flame retardant properties, has high resistance to various chemicals, has high mechanical strength, and can meet the requirements of various application scenarios.

In another embodiment of the present utility model, the outer sheath 6 is a semi-extruded form of a coated irradiation cross-linked polyolefin (XLPO) material, XLPO has excellent properties of high strength, corrosion resistance, abrasion resistance, aging resistance, thermal stability, chemical stability, etc., which can flexibly adapt to different product design and manufacturing requirements.

According to the utility model, the basalt fiber bulked yarn 7 filled between the wire core 1 and the basalt fiber wrapping tape 2 can fill the gap between the wire core 1 and the basalt fiber wrapping tape 2. During actual processing, the basalt fiber bulked yarn 4 fills gaps between the embedded type wire core and the first basalt fiber wrapping tape 1 in a triangular or polygonal special-shaped mode, can play a supporting role, guarantees the overall roundness of the appearance of the cable, improves the overall aesthetic feeling of the cable, and can also prevent the wire core 1 of the cable from being deformed loosely. In addition, the basalt fiber bulked yarn 7 has strong mechanical property and fireproof and moistureproof performances, and can improve the overall mechanical strength and stability of the cable. In the utility model, the filling volume of the basalt fiber bulked yarn 7 accounts for 10-60% of the volume of the inner cavity of the basalt fiber wrapping tape 2.

The thickness of the basalt fiber tape 2 is processed to be 0.08-0.10mm, and preferably 0.09mm, so that the thickness of the basalt fiber tape 2 is thinned, the working efficiency is effectively improved, the tape replacement times are reduced, the knitting density of the basalt fiber tape 2 is optimized from about 85% to 100%, the flame retardant property of the basalt fiber tape 2 can be effectively improved from class B to class A, the laying and installation mechanical property can be enhanced, the phenomenon of breaking conductors in the installation and laying process can be effectively avoided, and the friction force between the basalt fiber tape 2 and a sheath layer can be reduced.

The thickness of the basalt fiber tape 2 is 0.01mm, and the thickness of at least two layers of synthetic mica tapes adopted by the traditional similar products is more than or equal to 0.14mm. Compared with the traditional product, the basalt fiber tape 2 used in the utility model reduces the raw material cost to 15%.

As shown in figure 1, in the utility model, the number of the wire cores 1 is more than two, and every two adjacent wire cores 1 are tangent. More than two wire cores 1 are filled with the inner cavities of basalt fiber wrapping tapes 2, so that the overall roundness of the appearance of the cable can be ensured, and the tensile strength of the cable can be enhanced. In a preferred embodiment of the utility model, the number of the wire cores 1 is seven, one wire core 1 is arranged on the central line of the cable, the other six wire cores are uniformly distributed on the periphery of the central wire core 1, and the six wire cores 1 on the periphery are tangent to the inner cavity wall of the basalt fiber wrapping tape 2. In this embodiment, the gaps between each core 1 are also filled with basalt fiber bulked yarn 7.

As shown in fig. 2, the wire core 1 includes a center layer basalt fiber braided wire 101, and further includes a first conductor 102, a second basalt fiber braided layer 103, a second conductor 104, a third basalt fiber braided layer 105 and an insulating layer 106 which are concentrically arranged and sequentially coated on the periphery of the center layer basalt fiber braided wire 101 from inside to outside.

According to the utility model, basalt fiber is taken as the center of the wire core 1, so that the tensile specific strength of the whole wire core 1 is higher, and the basalt fiber is arranged at the center of the wire core 1, but is not used for transmitting current, and is mainly used for the strength and the durability of the wire core 1.

The weaving densities of the center layer basalt fiber weaving line 101, the first basalt fiber weaving layer 5, the second basalt fiber weaving layer 103 and the third basalt fiber weaving layer 105 are all more than or equal to 98 percent. The basalt fiber woven layer with the density can effectively isolate flame, increase the longitudinal tensile strength of the cable, effectively avoid the phenomenon of breaking conductors in the installation and laying processes, and have better performances such as fire resistance, moisture resistance and the like.

The first conductor 102 is a stranded aluminum alloy conductor and is an ultra-soft aluminum alloy conductor, and the ultra-soft aluminum alloy conductor has excellent flexibility, does not generate cracks even if repeatedly stressed, reduces potential safety hazards generated in the installation process, also enables the aluminum alloy cable to be easier in bending, reduces the space of installation layout, and reduces the installation cost. Although aluminum alloys have lower electrical conductivity than copper, because of their lower density, both electrical resistivity per unit length and electrical quality are relatively superior.

The second conductor 104 is a stranded copper alloy conductor and is a copper alloy conductor, the mechanical strength and the conductivity of the whole cable are obviously improved by using the copper alloy conductor, the resistance loss is reduced, the power transmission efficiency is improved, the oxidation resistance of the copper alloy conductor is superior to that of an aluminum alloy conductor, and the copper alloy conductor can effectively prevent oxidation reaction under severe environments such as humidity or high temperature and the like, so that the stability and the reliability of the cable are maintained.

In actual processing, the diameter of the aluminum alloy conductor monofilament is optimized from conventional 0.5-0.7mm to less than or equal to 0.30mm, so that the overall tensile strength of the aluminum alloy conductor is further improved, and the overall flexibility is enhanced. The diameter of the copper alloy conductor monofilament is optimized from conventional 0.21-0.31mm to less than or equal to 0.12mm, the elongation at break is improved to more than or equal to 35%, and the resistivity of the monofilament is reduced to less than or equal to 0.016900 Ω & mm ²/m. The center layer basalt fiber braided wire 101, aluminum alloy monofilament and second basalt fiber braided layer 103 and copper monofilament are twisted and formed, so that the high temperature resistance of the brown fiber filament is fully reflected when tank annealing is carried out together, the trouble of secondary annealing is reduced, the weight of the cable can be reduced, and the cost is reduced. The traditional braiding layer mainly adopts aramid fiber filaments, and is only added at the periphery of the stranded conductor center layer in a filament form, and the second basalt fiber braiding layer 103 has high braiding strength, and the second basalt fiber braiding layer 103 has the supporting and buffering effects, so that abrasion between the first conductor 102 and the second conductor 104 is reduced.

The insulating layer 106 is tightly coated on the surface of the third basalt fiber woven layer 105, so that the adhesive force of the insulating layer 106 can be effectively increased, the insulating wire core 1 is more round, the insulating thickness is uniform, the concentricity between the insulating layer 106 and the basalt fiber woven wire 101 at the central layer is more than or equal to 85%, and the outer diameter of the insulating wire core 1 can be effectively reduced to 0.01mm.

The product of the utility model is subjected to mechanical fatigue resistance test according to the China robot industry alliance standard CRIA0003, and the test result is that the number of times of drag chain experiments is 1200 ten thousand times. The current common cable tow chain number of times in market is 1000 ten thousand, the utility model discloses a tow chain number of times is 1200 ten thousand times, has improved the whole mechanical properties of cable greatly, and the practicality is strong.

The foregoing description of the embodiments provides further details of the objects, aspects and advantages of the present utility model, and it should be understood that the foregoing description is only illustrative of the practice of the present utility model, it is intended that the utility model be not limited to the exact embodiment and that any modifications, equivalents, and improvements made within the spirit and scope of the utility model are included within the scope of the utility model.

Claims (9)

1. The novel basalt fiber mechanical property-resistant cable is characterized by comprising a wire core (1), basalt fiber wrapping tape (2), an inner protective layer (3), an aluminum foil layer (4), a first basalt fiber weaving layer (5) and an outer sheath (6), wherein the basalt fiber wrapping tape (2), the inner protective layer (3), the aluminum foil layer (4) and the outer sheath (6) are concentrically arranged and sequentially wrapped on the periphery of the wire core (1) from inside to outside, and basalt fiber bulked yarns (7) are further filled between the wire core (1) and the basalt fiber wrapping tape (2).

2. The novel basalt fiber mechanical property-resistant cable according to claim 1, wherein the cable core (1) comprises a center layer basalt fiber braided wire (101), and further comprises a first conductor (102), a second basalt fiber braided layer (103), a second conductor (104), a third basalt fiber braided layer (105) and an insulating layer (106) which are concentrically arranged and sequentially coated on the periphery of the center layer basalt fiber braided wire (101) from inside to outside.

3. The novel basalt fiber mechanical property-resistant cable according to claim 2, wherein the first conductor (102) is a stranded aluminum alloy conductor, and the aluminum alloy monofilament diameter in the stranded aluminum alloy conductor is less than or equal to 0.30mm.

4. A green novel basalt fiber mechanical property-resistant cable according to claim 2 or 3, wherein the second conductor (104) is a stranded copper alloy conductor, and the diameter of copper alloy monofilaments in the stranded copper alloy conductor is less than or equal to 0.12mm.

5. A green novel basalt fiber mechanical property-resistant cable according to claim 1, 2 or 3, wherein the filling volume of the basalt fiber bulked yarn (7) accounts for 10% -60% of the inner cavity volume of the basalt fiber wrapping tape (2).

6. The novel basalt fiber mechanical property resistant cable according to claim 4, wherein the filling volume of the basalt fiber bulked yarn (7) accounts for 10% -60% of the inner cavity volume of the basalt fiber wrapping tape (2).

7. The novel basalt fiber mechanical property-resistant cable according to claim 1, 2, 3 or 6, wherein the number of the wire cores (1) is more than two, and every two adjacent wire cores (1) are tangent.

8. The novel basalt fiber mechanical property-resistant cable according to claim 4, wherein the number of the wire cores (1) is more than two, and every two adjacent wire cores (1) are tangent.

9. The novel basalt fiber mechanical property-resistant cable according to claim 5, wherein the number of the wire cores (1) is more than two, and every two adjacent wire cores (1) are tangent.