Distributed generation wind turbine cable

Abstract

The utility model discloses a distributed power generation wind turbine cable relates to cable technical field, solves the deficiency of the current power generation wind turbine cable torsion resistance, high temperature resistance, wear resistance and fire -retardant fire prevention performance, and there is certain safe hidden danger technical problem, including cable core subassembly, cable core subassembly includes a group of conductor structure, the polytetrafluoroethylene wrapping tape of wrapping in the conductor structure outside and the aramid fiber filling yarn of filling between conductor structure and polytetrafluoroethylene wrapping tape, wherein, every conductor structure includes conductor, the polyurethane insulating sleeve of wrapping on the conductor and the aramid fiber braiding protective layer of wrapping on every polyurethane insulating sleeve, still include: sheath subassembly, the design of the utility model has strengthened the cable's resistance to flexing, wear resistance, tensile, flame -retardant etc. Characteristic, can effectively improve the service life of cable to be able to provide strong safeguard for long -term stable operation of wind power generation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cable technical field especially relates to distributed power generation wind turbine cable. BACKGROUND

[0002] With the increasingly apparent earth environment problem, the global countries continue to increase the attention degree to the renewable energy. Wind energy, as the environmental protection clean energy, has occupied the pivotal position in the world energy structure with its renewable characteristics. In this green energy revolution wave, the wind turbine cable plays the key role, and it maintains the stable operation of the wind power generation system with its indispensable existence.

[0003] At present, the power generation wind turbine cable as the vital electric power transmission assembly in the wind power generation system undertakes the core task of connecting the wind turbine to the power grid, and occupies the extremely important position in the wind energy application field. However, the defects of the cable include the insufficient torsion resistance, high temperature resistance, wear resistance and flame retardant performance, which directly shortens the service life of the cable, and it is difficult to ensure the long-term stable operation of the wind power generation system, thereby burying the safety hazard. Therefore, in order to meet the current market demand, a kind of distributed power generation wind turbine cable is designed and developed. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in the prior art. Therefore, the utility model provides a distributed power generation wind turbine cable, which solves the technical problems of the insufficient torsion resistance, high temperature resistance, wear resistance and flame retardant performance of the existing cable, and certain safety hazard.

[0005] To achieve the above-mentioned purpose, according to the first aspect of the embodiment of the utility model, a distributed power generation wind turbine cable is provided, which comprises a cable core assembly,

[0006] The cable core assembly comprises a group of conductor structures, polytetrafluoroethylene wrapping tape wrapped outside the conductor structure and aramid fiber filling yarn filled between the conductor structure and the polytetrafluoroethylene wrapping tape,

[0007] Wherein, each conductor structure comprises a conductor, a polyurethane insulating sleeve wrapped on the conductor and an aramid fiber woven protective layer wrapped on each polyurethane insulating sleeve,

[0008] Further comprising:

[0009] The sheath assembly comprises a copper wire braided shielding layer wrapped outside the cable core assembly and a polyurethane sheath wrapped on the copper wire braided shielding layer.

[0010] Further improvement lies in that each conductor is made of copper core soft conductor and aramid fiber.

[0011] Further improvement lies in that the number of the conductor structure is at least three and is uniformly distributed.

[0012] Compared with the prior art, the power generation wind turbine cable has the advantages that:

[0013] The power generation wind turbine cable has the advantages that: the conductor structure is improved, the flexibility, the tensile resistance and the torsion resistance are effectively improved, the structure of the cable body is improved and the material is selected, the product has excellent oil resistance, wear resistance, corrosion resistance, high and low temperature resistance and flame retardant and fireproof performance, the product can be used for line connection of the wind turbine and is suitable for harsh working conditions, such as oil pollution, low temperature and serious pollution environment, and the product can maintain good flexibility and folding resistance in long-term harsh working conditions, and can be used for outdoor anti-ultraviolet occasions. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the overall structure schematic diagram of the utility model.

[0015] Markings in the figure:

[0016] 1, cable core assembly;11, conductor structure;12, aramid fiber filling yarn;13, polytetrafluoroethylene tape;101, conductor;102, polyurethane insulation sleeve;103, aramid fiber weaving;

[0017] 2, sheath assembly;21, polyurethane sheath;22, copper wire braided shielding layer. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be described clearly and completely in combination with embodiments, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0019] As shown in the figure, the distributed power generation wind turbine cable comprises a cable core assembly 1; Figure 1

[0020] The cable core assembly 1 comprises a group of conductor structures 11, polytetrafluoroethylene tape 13 wrapped outside the conductor structure 11 and aramid fiber filling yarn 12 filled between the conductor structure 11 and the polytetrafluoroethylene tape 13.

[0021] ​Each conductor structure 11 comprises a conductor 101, a polyurethane insulating sleeve 102 wrapped on the conductor 101, and an aramid fiber woven protective layer 103 wrapped on each polyurethane insulating sleeve 102, and in practice, the number of the group of conductor structures 11 is at least three, and is uniformly distributed; the embodiment takes three as an example;

[0022] Specifically, as a preferred embodiment, each conductor 101 is made of a copper core soft conductor and aramid yarn, and the diameter and number of the high-precision soft copper wire are designed and selected, and then combined with the aramid yarn for bundle twisting, so as to control the optimal diameter and twisting pitch of the single wire, so that the conductor has good flexibility and tensile resistance, and can fully meet the repeated bending requirements in the wind power generation process.

[0023] Further comprising: a sheath assembly 2, the sheath assembly 2 comprising a copper wire woven shielding layer 22 wrapped outside the cable core assembly 1 and a polyurethane sheath 21 wrapped on the copper wire woven shielding layer 22, by arranging the copper wire woven shielding layer 22, the electromagnetic interference to the outside can be better reduced, and the influence of the external electromagnetic field on the inside of the cable can be limited, and the durability and grounding protection of the cable in use can be improved. The external polyurethane sheath 21 is made of polyurethane material with low smoke and halogen-free flame retardant properties. The material has strong wear resistance, cutting resistance and tear resistance, and can maintain high flexibility even at low temperature, and is particularly suitable for applications requiring dynamic movement and bending in wind power generation, and can withstand millions of bending cycles or strong torsion.

[0024] It should be further noted that the cable in the application file is twisted and manufactured by using existing equipment, the manufacturing process is prior art, and the working principle is disclosed, which is omitted in the embodiment. In addition, it should be noted that the application file only improves the deficiencies of the existing cable in terms of torsion resistance, high temperature resistance, wear resistance and flame retardant performance, and the safety hazards, and does not involve other improvements; the working principle of the distributed power generation wind turbine cable is introduced as follows:

[0025] The cable conductor of the new type is a multi-strand copper core twisted soft conductor, the diameter and number of the high-precision soft copper wire are designed and selected, and then combined with the aramid yarn for bundle twisting, so as to control the optimal diameter and twisting pitch of the single wire, so that the conductor structure 11 has good flexibility and tensile resistance, and can fully meet the repeated bending requirements in the wind power generation process.

[0026] By setting the polyurethane insulation sleeve 102 outside the conductor structure, the polyurethane has good elasticity and flexibility, is a high-performance insulation material, has very high insulation strength and insulation resistance, can effectively prevent current leakage and conduction, and has superior low-temperature and high-temperature resistance, can work normally in an environment of -40 to +80℃, and maintain good insulation performance. The outer woven aramid fiber protective layer 103 of the insulation layer, aramid fiber belongs to special fiber, has the characteristics of anti-tension, high strength, high rigidity, light weight, wear resistance, etc. The woven aramid fiber protective layer 103 can effectively protect the insulation layer from wear and tear during continuous bending. The braided core is cabled and twisted, the aramid fiber filling yarn is filled to improve the tensile performance of the cable, and the polytetrafluoroethylene wrapping tape 13 is tightly wrapped. The polytetrafluoroethylene wrapping tape 13 has good electrical insulation, high withstand voltage, and superior high-temperature resistance, and can be used at a high temperature of 260℃ for a long time, which can improve the bending frequency and working temperature of the cable.

[0027] In addition, the copper wire braided shielding layer 22 is arranged in the cable core structure 1, the braiding density is greater than or equal to 85%, which can better reduce the electromagnetic interference to the outside, limit the influence of the external electromagnetic field on the inside of the cable, and improve the durability and grounding protection of the cable. The polyurethane sheath 21 of the product uses a polyurethane material with low smoke and halogen-free flame retardant properties. This material has strong wear resistance, cutting resistance and tear resistance, and can maintain high flexibility even at low temperatures. It is particularly suitable for applications that require dynamic movement and bending in wind power generation, can withstand millions of bending cycles or strong torsion, and has strong flame retardant, oil resistant, solvent resistant and ultraviolet radiation resistant capabilities. It can meet the use requirements in harsh environments such as oil pollution, high and low temperature environments, etc.

[0028] In summary, the product innovatively designs the structure to focus on the characteristics of cable bending resistance, wear resistance, tensile resistance, and flame retardance, and is used as a connecting cable for distributed power generation wind turbines, which can effectively improve the service life and provide strong protection for long-term stable operation of wind power generation.

[0029] The above examples are only used to illustrate the technical method of the utility model and are not limited. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical method of the utility model.

Claims

1. Distributed power wind turbine cable, characterized in that, The cable core assembly (1) comprises a group of conductor structures (11), a polytetrafluoroethylene wrapping tape (13) wrapped outside the conductor structures (11), and aramid fiber filler yarns (12) filled between the conductor structures (11) and the polytetrafluoroethylene wrapping tape (13). Each of the conductor structures (11) comprises a conductor (101), a polyurethane insulating sleeve (102) wrapped on the conductor (101), and an aramid fiber woven protective layer (103) wrapped on each polyurethane insulating sleeve (102). Further comprising: A sheath assembly (2) comprising a copper wire braided shielding layer (22) wrapped outside the cable core assembly (1), and a polyurethane sheath (21) wrapped on the copper wire braided shielding layer (22). Each of the conductors (101) is made of a copper core soft conductor and an aramid yarn.

2. A distributed generation wind turbine cable according to claim 1, characterised in that, The number of the group of conductor structures (11) is at least three, and is uniformly distributed.

3. A distributed generation wind turbine cable according to claim 1, characterised in that, ​

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