Wind power generation cable and preparation method thereof
Patent Information
- Application Number
- CN202411771502.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-03-07
Smart Images
Figure CN119581141A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of cables, and in particular to a wind power generation cable and a preparation method thereof. Background Art
[0002] Wind power generation refers to the process of converting wind energy into mechanical energy, and then converting mechanical energy into electrical energy. Wind power generation is inseparable from wind turbines, which are machines that convert wind energy into electrical energy. The work of wind turbines is inseparable from cables, which are used to transmit electrical energy in wind turbines. Power generation cables are mainly composed of cable cores (conductors and insulation layers), sheaths, etc., and are used to transmit and distribute electrical energy. The cable core of the cable is mainly composed of multiple core wires consisting of an internal conductor and an external insulating layer.
[0003] The Chinese patent with publication number CN118942777A discloses a high-performance wind power cable and a preparation method thereof. The filling layer material in the high-performance wind power cable is made of the following raw materials in parts by weight: 60-80 parts of modified polyester material, 20-30 parts of modified polyurethane material, 10-15 parts of vulcanizing agent, 1-5 parts of magnesium oxide, and 1-5 parts of silane coupling agent. The high-performance wind power cable prepared by the present invention has good tensile strength, high toughness, strong water resistance, and also has good twist resistance and aging resistance.
[0004] However, the above technical solution has the following disadvantages: the existing wind power generation cables are worn out due to friction during use, which damages the cables, not only shortening the service life of the cables, but also posing certain safety hazards. Summary of the invention
[0005] The purpose of the present invention is to solve the problems existing in the background technology and to provide a wind power generation cable and a preparation method thereof.
[0006] The technical solution of the present invention is a method for preparing a wind power cable, comprising the following steps:
[0007] S1. Use the wire bundle re-twisting process to re-twist multiple copper wires into a cable core;
[0008] S2, cable core annealing treatment, annealing temperature is generally between 500℃ and 700℃, holding time is 2 to 3 hours, cooling with the furnace to below 150℃ and then air cooling out of the furnace;
[0009] S3, double-layer co-extrusion is used to form a filling layer and an insulation layer outside the cable core, and the thickness of the insulation layer is 2 to 3 mm;
[0010] S4, braided shielding layer, a shielding layer is braided outside the insulating layer, and the material of the shielding layer is steel wire;
[0011] S5, a wrapped reinforcement layer, a buffer layer is wrapped outside the shielding layer, the thickness of the buffer layer is 4 to 5 mm, the material of the buffer layer is modified polyether polyurethane, and a reinforcement layer is woven outside the buffer layer;
[0012] S6. Apply an anti-corrosion layer. Apply an anti-corrosion layer outside the reinforcement layer. Wrap a flame retardant layer on the surface of the anti-corrosion layer. The material of the flame retardant layer is modified chloroprene rubber. Wrap a wear-resistant layer outside the flame retardant layer. The material of the wear-resistant layer is modified melamine resin.
[0013] Preferably, in step S5, the modified polyether polyurethane is a polyether polyurethane having an anti-ultraviolet agent and an anti-aging agent added to a polyurethane as a base.
[0014] Preferably, in step S6, the modified chloroprene rubber is made of the following raw materials in parts by weight: 35-50 parts of chloroprene rubber, 8-16 parts of methylphenyl vinyl silicone rubber, 10-15 parts of melamine glue, 6-9 parts of modified nano calcium carbonate, 1-2 parts of calcium hydrogen phosphate, 4-6 parts of sodium fatty alcohol polyoxyethylene ether carboxylate, 0.3-0.6 parts of plasticizer, and 0.9-1.5 parts of organic metal compound.
[0015] Preferably, the modification method of modified nano calcium carbonate is: mixing nano calcium carbonate with 3.2-3.7% carboxylated polybutadiene, 1.3-2.1% hexamethylphosphoric triamide, and 0.3-0.6% stearic acid, and ball milling at a temperature of 55-65° C. for 20-30 minutes.
[0016] Preferably, in step S6, the modified melamine resin is made from the following raw materials in parts by weight: 8-10 parts of melamine, 2-3 parts of urea and 2 parts of formaldehyde.
[0017] Preferably, the preparation method of the modified melamine resin comprises the following steps: solid raw materials melamine and urea are first put into a reaction kettle according to a ratio, the lid is sealed, and then liquid formaldehyde is introduced into the reaction kettle. After heating to 75°C-85°C, the reaction is sealed for 10-15 hours, and the heating is stopped; then cooling water is introduced to cool to 55°C-65°C, and the reactants are allowed to react naturally in the reaction kettle for 2-3 hours, and the reaction at this time is an acidification reaction; then alkali solution is added for neutralization reaction, and the pH is adjusted to 7-7.5, and then concentrated. The product remaining in the kettle after concentration is the modified melamine resin.
[0018] Specifically, the present invention further discloses a wind power generation cable, which includes:
[0019] The cable core has an isolation layer, a reinforcement layer and a protective layer wrapped in sequence on its surface, and a filling layer is arranged between the isolation layer and the cable core;
[0020] The isolation layer includes an insulating layer and a shielding layer; the insulating layer is sleeved on the cable core, and the shielding layer is sleeved on the insulating layer;
[0021] The reinforcement layer includes a buffer layer and a reinforcement layer; the buffer layer is sleeved outside the isolation layer, and the reinforcement layer is connected to the outer peripheral surface of the buffer layer;
[0022] The protective layer includes an anti-corrosion layer, a flame retardant layer and a wear-resistant layer; the anti-corrosion layer is coated on the surface of the reinforcing layer, the flame retardant layer is sleeved on the anti-corrosion layer, and the wear-resistant layer is arranged on the outer surface of the flame retardant layer.
[0023] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:
[0024] The present invention aims to improve the problems of poor high and low temperature torsion resistance and poor wear resistance of existing wind power generation cables. The torsion resistance and wear resistance of the cable in extreme weather are improved by sequentially wrapping an isolation layer, a reinforcement layer and a protective layer on the surface of a cable core, and arranging a filling layer between the isolation layer and the cable core. The torsion resistance of the cable is improved by arranging a modified polyether polyurethane buffer layer. The flame retardancy of the cable is improved by arranging a modified chloroprene rubber flame retardant layer. The wear resistance of the cable is effectively improved by arranging a modified melamine resin wear-resistant layer, thereby improving the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 The present invention is a schematic structural diagram of an embodiment of the present invention.
[0026] Figure numerals: 1, cable core; 2, isolation layer; 21, insulation layer; 22, shielding layer; 3, reinforcement layer; 31, buffer layer; 32, strengthening layer; 4, protective layer; 41, anti-corrosion layer; 42, flame retardant layer; 43, wear-resistant layer; 5, filling layer. DETAILED DESCRIPTION
[0027] Embodiment 1
[0028] Embodiment 1 discloses a method for preparing a wind power generation cable, comprising the following preparation steps:
[0029] S1, using the bundled wire re-twisting process to re-twist multiple copper wires into a cable core 1;
[0030] S2, annealing treatment of cable core 1, the annealing temperature is generally between 500℃ and 700℃, the holding time is 2 to 3 hours, and the cable core 1 is cooled to below 150℃ and then air-cooled;
[0031] S3, using double-layer co-extrusion to form a filling layer 5 and an insulating layer 21 outside the cable core 1, the thickness of the insulating layer 21 is 2 mm;
[0032] S4, a braided shielding layer 22, a shielding layer 22 is braided outside the insulating layer 21, and the material of the shielding layer 22 is steel wire;
[0033] S5, wrapping the reinforcement layer 3, wrapping the buffer layer 31 outside the shielding layer 22, the thickness of the buffer layer 31 is 4 mm, the material of the buffer layer 31 is modified polyether polyurethane, and the reinforcement layer 32 is woven outside the buffer layer 31;
[0034] S6. Apply an anti-corrosion layer 41. Apply an anti-corrosion layer 41 outside the reinforcing layer 3. Wrap a flame retardant layer 42 on the surface of the anti-corrosion layer 41. The material of the flame retardant layer 42 is modified chloroprene rubber. Wrap a wear-resistant layer 43 outside the flame retardant layer 42. The material of the wear-resistant layer 43 is modified melamine resin.
[0035] In step S5, the modified polyether polyurethane is a polyether polyurethane in which an anti-ultraviolet agent and an anti-aging agent are added to polyurethane as a base.
[0036] In step S6, the modified chloroprene rubber is made from the following raw materials in parts by weight: 35 parts of chloroprene rubber, 16 parts of methylphenyl vinyl silicone rubber, 15 parts of melamine glue, 6 parts of modified nano calcium carbonate, 2 parts of calcium hydrogen phosphate, 4 parts of sodium fatty alcohol polyoxyethylene ether carboxylate, 0.5 parts of plasticizer, and 0.9 parts of organic metal compound.
[0037] The modification method of modified nano calcium carbonate is as follows: mixing nano calcium carbonate with 3.2% carboxylated polybutadiene, 2.1% hexamethylphosphoric triamide and 0.6% stearic acid, and subjecting the mixture to ball milling at a temperature of 55-65° C. for 20-30 minutes.
[0038] In step S6, the modified melamine resin is prepared from the following raw materials in parts by weight: 10 parts of melamine, 2 parts of urea and 2 parts of formaldehyde.
[0039] The preparation method of the modified melamine resin comprises the following steps: solid raw materials melamine and urea are firstly put into a reaction kettle according to a proportion, a lid is sealed, liquid formaldehyde is introduced into the reaction kettle, after heating to 75-85°C, the reaction is sealed for 10-15 hours, and the heating is stopped; cooling water is then introduced to cool to 55-65°C, and the reactants are allowed to react naturally in the reaction kettle for 2-3 hours, and the reaction at this time is an acidification reaction; alkali solution is then added for neutralization reaction, and the pH is adjusted to 7-7.5, and then concentrated, and the product remaining in the kettle after concentration is the modified melamine resin.
[0040] This embodiment also discloses a wind power generation cable, which includes:
[0041] A cable core 1, the surface of which is sequentially wrapped with an isolation layer 2, a reinforcement layer 3 and a protective layer 4, and a filling layer 5 is arranged between the isolation layer 2 and the cable core 1;
[0042] The isolation layer 2 includes an insulating layer 21 and a shielding layer 22; the insulating layer 21 is sleeved on the cable core 1, and the shielding layer 22 is sleeved on the insulating layer 21;
[0043] The reinforcement layer 3 includes a buffer layer 31 and a reinforcement layer 32; the buffer layer 31 is sleeved outside the isolation layer 2, and the reinforcement layer 32 is connected to the outer peripheral surface of the buffer layer 31;
[0044] The protective layer 4 includes an anti-corrosion layer 41 , a flame retardant layer 42 and a wear-resistant layer 43 ; the anti-corrosion layer 41 is coated on the surface of the reinforcing layer 3 , the flame retardant layer 42 is sleeved on the anti-corrosion layer 41 , and the wear-resistant layer 43 is arranged on the outer surface of the flame retardant layer 42 .
[0045] Embodiment 2
[0046] Embodiment 2 discloses a method for preparing a wind power cable, comprising the following preparation steps:
[0047] S1, using the bundled wire re-twisting process to re-twist multiple copper wires into a cable core 1;
[0048] S2, annealing treatment of cable core 1, the annealing temperature is generally between 500℃ and 700℃, the holding time is 2 to 3 hours, and the cable core 1 is cooled to below 150℃ and then air-cooled;
[0049] S3, using double-layer co-extrusion to form a filling layer 5 and an insulating layer 21 outside the cable core 1, the thickness of the insulating layer 21 is 2.3 mm;
[0050] S4, a braided shielding layer 22, a shielding layer 22 is braided outside the insulating layer 21, and the material of the shielding layer 22 is steel wire;
[0051] S5, wrapping the reinforcement layer 3, wrapping the buffer layer 31 outside the shielding layer 22, the thickness of the buffer layer 31 is 4.3 mm, the material of the buffer layer 31 is modified polyether polyurethane, and the reinforcement layer 32 is woven outside the buffer layer 31;
[0052] S6. Apply an anti-corrosion layer 41. Apply an anti-corrosion layer 41 outside the reinforcing layer 3. Wrap a flame retardant layer 42 on the surface of the anti-corrosion layer 41. The material of the flame retardant layer 42 is modified chloroprene rubber. Wrap a wear-resistant layer 43 outside the flame retardant layer 42. The material of the wear-resistant layer 43 is modified melamine resin.
[0053] In step S5, the modified polyether polyurethane is a polyether polyurethane in which an anti-ultraviolet agent and an anti-aging agent are added to polyurethane as a base.
[0054] In step S6, the modified chloroprene rubber is made from the following raw materials in parts by mass: 40 parts of chloroprene rubber, 14 parts of methylphenyl vinyl silicone rubber, 13 parts of melamine glue, 7 parts of modified nano calcium carbonate, 1.7 parts of calcium hydrogen phosphate, 4.7 parts of sodium fatty alcohol polyoxyethylene ether carboxylate, 0.44 parts of plasticizer, and 1.1 parts of organic metal compound.
[0055] The modification method of modified nano calcium carbonate is as follows: the nano calcium carbonate is mixed with 3.4% of carboxylated polybutadiene, 1.8% of hexamethylphosphoric triamide and 0.5% of stearic acid, and the mixture is ball-milled at a temperature of 55-65° C. for 20-30 minutes.
[0056] In step S6, the modified melamine resin is prepared from the following raw materials in parts by weight: 9 parts of melamine, 2 parts of urea and 2 parts of formaldehyde.
[0057] The preparation method of the modified melamine resin comprises the following steps: solid raw materials melamine and urea are firstly put into a reaction kettle according to a proportion, a lid is sealed, liquid formaldehyde is introduced into the reaction kettle, after heating to 75-85°C, the reaction is sealed for 10-15 hours, and the heating is stopped; cooling water is then introduced to cool to 55-65°C, and the reactants are allowed to react naturally in the reaction kettle for 2-3 hours, and the reaction at this time is an acidification reaction; alkali solution is then added for neutralization reaction, and the pH is adjusted to 7-7.5, and then concentrated, and the product remaining in the kettle after concentration is the modified melamine resin.
[0058] This embodiment also discloses a wind power generation cable, which includes:
[0059] A cable core 1, the surface of which is sequentially wrapped with an isolation layer 2, a reinforcement layer 3 and a protective layer 4, and a filling layer 5 is arranged between the isolation layer 2 and the cable core 1;
[0060] The isolation layer 2 includes an insulating layer 21 and a shielding layer 22; the insulating layer 21 is sleeved on the cable core 1, and the shielding layer 22 is sleeved on the insulating layer 21;
[0061] The reinforcement layer 3 includes a buffer layer 31 and a reinforcement layer 32; the buffer layer 31 is sleeved outside the isolation layer 2, and the reinforcement layer 32 is connected to the outer peripheral surface of the buffer layer 31;
[0062] The protective layer 4 includes an anti-corrosion layer 41 , a flame retardant layer 42 and a wear-resistant layer 43 ; the anti-corrosion layer 41 is coated on the surface of the reinforcing layer 3 , the flame retardant layer 42 is sleeved on the anti-corrosion layer 41 , and the wear-resistant layer 43 is arranged on the outer surface of the flame retardant layer 42 .
[0063] Embodiment 3
[0064] Embodiment 3 discloses a method for preparing a wind power cable, comprising the following preparation steps:
[0065] S1, using the bundled wire re-twisting process to re-twist multiple copper wires into a cable core 1;
[0066] S2, annealing treatment of cable core 1, the annealing temperature is generally between 500℃ and 700℃, the holding time is 2 to 3 hours, and the cable core 1 is cooled to below 150℃ and then air-cooled;
[0067] S3, using double-layer co-extrusion to form a filling layer 5 and an insulating layer 21 outside the cable core 1, the thickness of the insulating layer 21 is 2.6 mm;
[0068] S4, a braided shielding layer 22, a shielding layer 22 is braided outside the insulating layer 21, and the material of the shielding layer 22 is steel wire;
[0069] S5, wrapping the reinforcing layer 3, wrapping the buffer layer 31 outside the shielding layer 22, the thickness of the buffer layer 31 is 4.7 mm, the material of the buffer layer 31 is modified polyether polyurethane, and the reinforcing layer 32 is woven outside the buffer layer 31;
[0070] S6. Apply an anti-corrosion layer 41. Apply an anti-corrosion layer 41 outside the reinforcing layer 3. Wrap a flame retardant layer 42 on the surface of the anti-corrosion layer 41. The material of the flame retardant layer 42 is modified chloroprene rubber. Wrap a wear-resistant layer 43 outside the flame retardant layer 42. The material of the wear-resistant layer 43 is modified melamine resin.
[0071] In step S5, the modified polyether polyurethane is a polyether polyurethane in which an anti-ultraviolet agent and an anti-aging agent are added to polyurethane as a base.
[0072] In step S6, the modified chloroprene rubber is made from the following raw materials in parts by mass: 45 parts of chloroprene rubber, 11 parts of methylphenyl vinyl silicone rubber, 11 parts of melamine glue, 8 parts of modified nano calcium carbonate, 1.4 parts of calcium hydrogen phosphate, 5.4 parts of sodium fatty alcohol polyoxyethylene ether carboxylate, 0.37 parts of plasticizer, and 1.3 parts of organic metal compound.
[0073] The modification method of modified nano calcium carbonate is as follows: the nano calcium carbonate is mixed with 3.6% of carboxylated polybutadiene, 1.6% of hexamethylphosphoric triamide and 0.4% of stearic acid, and the mixture is ball-milled at a temperature of 55-65° C. for 20-30 minutes.
[0074] In step S6, the modified melamine resin is prepared from the following raw materials in parts by weight: 9 parts of melamine, 3 parts of urea and 2 parts of formaldehyde.
[0075] The preparation method of the modified melamine resin comprises the following steps: solid raw materials melamine and urea are firstly put into a reaction kettle according to a proportion, a lid is sealed, liquid formaldehyde is introduced into the reaction kettle, after heating to 75-85°C, the reaction is sealed for 10-15 hours, and the heating is stopped; cooling water is then introduced to cool to 55-65°C, and the reactants are allowed to react naturally in the reaction kettle for 2-3 hours, and the reaction at this time is an acidification reaction; alkali solution is then added for neutralization reaction, and the pH is adjusted to 7-7.5, and then concentrated, and the product remaining in the kettle after concentration is the modified melamine resin.
[0076] This embodiment also discloses a wind power generation cable, which includes:
[0077] A cable core 1, the surface of which is sequentially wrapped with an isolation layer 2, a reinforcement layer 3 and a protective layer 4, and a filling layer 5 is arranged between the isolation layer 2 and the cable core 1;
[0078] The isolation layer 2 includes an insulating layer 21 and a shielding layer 22; the insulating layer 21 is sleeved on the cable core 1, and the shielding layer 22 is sleeved on the insulating layer 21;
[0079] The reinforcement layer 3 includes a buffer layer 31 and a reinforcement layer 32; the buffer layer 31 is sleeved outside the isolation layer 2, and the reinforcement layer 32 is connected to the outer peripheral surface of the buffer layer 31;
[0080] The protective layer 4 includes an anti-corrosion layer 41 , a flame retardant layer 42 and a wear-resistant layer 43 ; the anti-corrosion layer 41 is coated on the surface of the reinforcing layer 3 , the flame retardant layer 42 is sleeved on the anti-corrosion layer 41 , and the wear-resistant layer 43 is arranged on the outer surface of the flame retardant layer 42 .
[0081] Embodiment 4
[0082] Embodiment 4 discloses a method for preparing a wind power generation cable, comprising the following preparation steps:
[0083] S1, using the bundled wire re-twisting process to re-twist multiple copper wires into a cable core 1;
[0084] S2, annealing treatment of cable core 1, the annealing temperature is generally between 500℃ and 700℃, the holding time is 2 to 3 hours, and the cable core 1 is cooled to below 150℃ and then air-cooled;
[0085] S3, using double-layer co-extrusion to form a filling layer 5 and an insulating layer 21 outside the cable core 1, the thickness of the insulating layer 21 is 3mm;
[0086] S4, a braided shielding layer 22, a shielding layer 22 is braided outside the insulating layer 21, and the material of the shielding layer 22 is steel wire;
[0087] S5, wrapping the reinforcement layer 3, wrapping the buffer layer 31 outside the shielding layer 22, the thickness of the buffer layer 31 is 5 mm, the material of the buffer layer 31 is modified polyether polyurethane, and the reinforcement layer 32 is woven outside the buffer layer 31;
[0088] S6. Apply an anti-corrosion layer 41. Apply an anti-corrosion layer 41 outside the reinforcing layer 3. Wrap a flame retardant layer 42 on the surface of the anti-corrosion layer 41. The material of the flame retardant layer 42 is modified chloroprene rubber. Wrap a wear-resistant layer 43 outside the flame retardant layer 42. The material of the wear-resistant layer 43 is modified melamine resin.
[0089] In step S5, the modified polyether polyurethane is a polyether polyurethane in which an anti-ultraviolet agent and an anti-aging agent are added to polyurethane as a base.
[0090] In step S6, the modified chloroprene rubber is made from the following raw materials in parts by mass: 50 parts of chloroprene rubber, 8 parts of methylphenyl vinyl silicone rubber, 8 parts of melamine glue, 9 parts of modified nano calcium carbonate, 1 part of calcium hydrogen phosphate, 6 parts of sodium fatty alcohol polyoxyethylene ether carboxylate, 0.3 parts of plasticizer, and 1.5 parts of organic metal compound.
[0091] The modification method of modified nano calcium carbonate is as follows: mixing nano calcium carbonate with 3.7% carboxylated polybutadiene, 1.3% hexamethylphosphoric triamide and 0.3% stearic acid, and subjecting the mixture to ball milling at a temperature of 55-65° C. for 20-30 minutes.
[0092] In step S6, the modified melamine resin is prepared from the following raw materials in parts by weight: 8 parts of melamine, 3 parts of urea and 2 parts of formaldehyde.
[0093] The preparation method of the modified melamine resin comprises the following steps: solid raw materials melamine and urea are firstly put into a reaction kettle according to a proportion, a lid is sealed, liquid formaldehyde is introduced into the reaction kettle, after heating to 75-85°C, the reaction is sealed for 10-15 hours, and the heating is stopped; cooling water is then introduced to cool to 55-65°C, and the reactants are allowed to react naturally in the reaction kettle for 2-3 hours, and the reaction at this time is an acidification reaction; alkali solution is then added for neutralization reaction, and the pH is adjusted to 7-7.5, and then concentrated, and the product remaining in the kettle after concentration is the modified melamine resin.
[0094] This embodiment also discloses a wind power generation cable, which includes:
[0095] A cable core 1, the surface of which is sequentially wrapped with an isolation layer 2, a reinforcement layer 3 and a protective layer 4, and a filling layer 5 is arranged between the isolation layer 2 and the cable core 1;
[0096] The isolation layer 2 includes an insulating layer 21 and a shielding layer 22; the insulating layer 21 is sleeved on the cable core 1, and the shielding layer 22 is sleeved on the insulating layer 21;
[0097] The reinforcement layer 3 includes a buffer layer 31 and a reinforcement layer 32; the buffer layer 31 is sleeved outside the isolation layer 2, and the reinforcement layer 32 is connected to the outer peripheral surface of the buffer layer 31;
[0098] The protective layer 4 includes an anti-corrosion layer 41 , a flame retardant layer 42 and a wear-resistant layer 43 ; the anti-corrosion layer 41 is coated on the surface of the reinforcing layer 3 , the flame retardant layer 42 is sleeved on the anti-corrosion layer 41 , and the wear-resistant layer 43 is arranged on the outer surface of the flame retardant layer 42 .
[0099] The flame retardant performance, torsion resistance, tensile strength, wear resistance and corrosion resistance of the wind power generation cable in the control group and the wind power generation cables in the four embodiments of the present invention were tested respectively, and the experimental data were recorded as shown in Table 1:
[0100] Table 1 is the experimental comparison data of the wind power cable of the present invention and the control group
[0101]
[0102] By analyzing the data in Table 1, after the low-temperature environment torsion test, a large number of fine cracks appeared on the surface of the wind power cable in the control group, while the surface of the wind power cable prepared by the present invention had no cracks, therefore, the present invention improves the torsion resistance of the wind power cable in a low-temperature environment; after the high-temperature torsion test, a large number of fine wrinkles appeared on the surface of the wind power cable in the control group, while the surface of the wind power cable prepared by the present invention had no cracks, therefore, the present invention improves the torsion resistance of the wind power cable in a high-temperature environment, and the present invention improves the torsion resistance of the wind power cable in an extreme environment; the elongation of the wind power cable in the four embodiments of the present invention is significantly higher than that of the wind power cable in the control group, therefore, the present invention improves the tensile performance of the wind power cable; the wear amount of the wind power cable in the four embodiments of the present invention is significantly lower than that of the wind power cable in the control group, therefore, the present invention improves the wear resistance of the wind power cable; in Examples 2-4 of the present invention, after being immersed in acidic solution and alkaline solution, no cracks were generated on the surface of the outer sheath layer of the cable, therefore, the present invention improves the corrosion resistance of the wind power cable. In summary, the wind power generation cable prepared by the present invention has excellent properties such as low temperature resistance, torsion resistance, tensile resistance, and corrosion resistance, and can better protect the cable and increase the service life of the cable.
[0103] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. A method for preparing a wind power cable, characterized in that: The steps include: S1. Using a bundled wire re-twisting process, a plurality of copper wires are re-twisted into a cable core (1); S2, annealing the cable core (1), the annealing temperature is generally between 500°C and 700°C, the holding time is 2 to 3 hours, and the cable core is cooled to below 150°C in the furnace and then air-cooled; S3, using double-layer co-extrusion to form a filling layer (5) and an insulating layer (21) outside the cable core (1), wherein the thickness of the insulating layer (21) is 2 to 3 mm; S4, a braided shielding layer (22), a shielding layer (22) is braided outside the insulating layer (21), and the material of the shielding layer (22) is steel wire; S5, wrapping the reinforcement layer (3), wrapping the buffer layer (31) outside the shielding layer (22), the thickness of the buffer layer (31) is 4 to 5 mm, the material of the buffer layer (31) is modified polyether polyurethane, and the reinforcement layer (32) is woven outside the buffer layer (31); S6, applying an anti-corrosion layer (41), applying an anti-corrosion layer (41) outside the reinforcing layer (3), wrapping a flame retardant layer (42) on the surface of the anti-corrosion layer (41), wherein the material of the flame retardant layer (42) is modified chloroprene rubber, and wrapping a wear-resistant layer (43) outside the flame retardant layer (42), wherein the material of the wear-resistant layer (43) is modified melamine resin.
2. The method for preparing a wind power cable according to claim 1, characterized in that: In step S5, the modified polyether polyurethane is a polyether polyurethane in which an anti-ultraviolet agent and an anti-aging agent are added to polyurethane as a base.
3. The method for preparing a wind power cable according to claim 1, characterized in that: In step S6, the modified chloroprene rubber is made from the following raw materials in parts by weight: 35-50 parts of chloroprene rubber, 8-16 parts of methylphenyl vinyl silicone rubber, 10-15 parts of melamine glue, 6-9 parts of modified nano calcium carbonate, 1-2 parts of calcium hydrogen phosphate, 4-6 parts of sodium fatty alcohol polyoxyethylene ether carboxylate, 0.3-0.6 parts of plasticizer, and 0.9-1.5 parts of organic metal compound.
4. The method for preparing a wind power cable according to claim 3, characterized in that: The modification method of modified nano calcium carbonate is as follows: mixing nano calcium carbonate with 3.2-3.7% carboxylated polybutadiene, 1.3-2.1% hexamethylphosphoric triamide and 0.3-0.6% stearic acid, and subjecting the nano calcium carbonate to ball milling at a temperature of 55-65 DEG C for 20-30 minutes.
5. The method for preparing a wind power cable according to claim 1, characterized in that: In step S6, the modified melamine resin is prepared from the following raw materials in parts by weight: 8-10 parts of melamine, 2-3 parts of urea and 2 parts of formaldehyde.
6. The method for preparing a wind power cable according to claim 5, characterized in that: The preparation method of the modified melamine resin comprises the following steps: solid raw materials melamine and urea are firstly put into a reaction kettle according to a proportion, a lid is sealed, liquid formaldehyde is introduced into the reaction kettle, after heating to 75-85°C, the reaction is sealed for 10-15 hours, and the heating is stopped; cooling water is then introduced to cool to 55-65°C, and the reactants are allowed to react naturally in the reaction kettle for 2-3 hours, and the reaction at this time is an acidification reaction; alkali solution is then added for neutralization reaction, and the pH is adjusted to 7-7.5, and then concentrated, and the product remaining in the kettle after concentration is the modified melamine resin.
7. A wind power generation cable, characterized in that: The wind power generation cable is prepared by the preparation method of the wind power generation cable according to any one of claims 1 to 6; Wind power cables include: A cable core (1), the surface of which is sequentially wrapped with an isolation layer (2), a reinforcement layer (3) and a protective layer (4), and a filling layer (5) is provided between the isolation layer (2) and the cable core (1); The isolation layer (2) comprises an insulating layer (21) and a shielding layer (22); the insulating layer (21) is sleeved on the cable core (1), and the shielding layer (22) is sleeved on the insulating layer (21); The reinforcement layer (3) comprises a buffer layer (31) and a reinforcement layer (32); the buffer layer (31) is sleeved outside the isolation layer (2), and the reinforcement layer (32) is connected to the outer peripheral surface of the buffer layer (31); The protective layer (4) comprises an anti-corrosion layer (41), a flame retardant layer (42) and a wear-resistant layer (43); the anti-corrosion layer (41) is coated on the surface of the reinforcing layer (3), the flame retardant layer (42) is sleeved on the anti-corrosion layer (41), and the wear-resistant layer (43) is arranged on the outer surface of the flame retardant layer (42).
Citation Information
Patent Citations
High-performance wind power generation cable and preparation method thereof
CN118942777A