High-strength wear-resistant corona-resistant self-adhesive glass filament-wound sintered wire for wind power motor

Abstract

The utility model relates to sintering line technical field especially relates to a kind of high-strength wear-resisting corona-resistant self-adhesion glass silk package sintering line for wind power motor, including cable main body, cable main body includes the conductor core layer being set in center, the outside of conductor core layer is tightly wrapped with first insulating layer, the outer wall of first insulating layer is tightly wound with glass silk package layer, glass silk package layer is sequentially matched with self-adhesion coating and wear-resistant outer protective layer outside, the utility model is set by multiple groups of structure's conductor core layer, adopts multiple strand stranded metal conductor wire and is equipped with internal insulating layer and ceramic coating;First insulating layer uses polyimide film and contains nanoscale product corona inhibitor particle;Glass silk package layer is stacked by at least two layers of different weaving angle glass silk, and weaving density gradient decreases;Self-adhesion coating is blended by thermoplastic elastomer and adhesive;Wear-resistant outer protective layer is multilayer composite structure, realize the cable high-strength for wind power motor, wear-resisting, corona-resistant and self-adhesion.

Description

Technical Field

[0001] This utility model relates to the field of sintering line technology, and in particular to a high-strength, wear-resistant, corona-resistant, self-adhesive glass fiber wrapped sintering line for wind turbines. Background Technology

[0002] With the booming development of the wind power industry, the performance and reliability of wind turbines, as core components, are of paramount importance. Wind turbine cables, serving as the key carriers for energy transmission and signal transmission within the turbine, face increasingly harsh operating environment challenges.

[0003] Wind turbines typically operate in complex outdoor environments, enduring significant mechanical stress as well as frequent vibrations and friction. This places extremely high demands on the abrasion resistance of the cables. Furthermore, the motor generates corona discharge during operation, which accelerates the aging of the cable insulation material, reduces its insulation performance, and affects the safe and stable operation of the motor. Therefore, the cables must possess excellent corona resistance.

[0004] Furthermore, the installation and securing of cables is a major challenge in the manufacturing and maintenance of motors. If the cables lack self-adhesive properties, they are difficult to position precisely during installation and are prone to displacement during use, potentially leading to short circuits and other malfunctions. Moreover, to accommodate the compact internal space of the motor, the cables must possess high strength to ensure they are not easily damaged under various external forces.

[0005] Existing wind turbine cables fail to simultaneously meet practical requirements in terms of abrasion resistance, corona resistance, self-adhesion, and strength. While some cables possess a certain degree of abrasion resistance, their corona resistance is insufficient; others have poor self-adhesion, making installation inconvenient and resulting in poor stability; still others lack sufficient strength to withstand harsh working environments. Therefore, developing a glass-fiber-coated sintered wire with multiple superior properties, including high strength, abrasion resistance, corona resistance, and self-adhesion, is of significant practical importance for improving the performance and reliability of wind turbines and promoting the further development of the wind power industry. Utility Model Content

[0006] To address some of the problems existing in the prior art, this utility model provides a high-strength, wear-resistant, corona-resistant, self-adhesive glass fiber-clad sintered wire for wind turbines. This utility model employs a conductor core layer with multiple structures, using multi-strand stranded metal wires with an internal insulation layer and a ceramic coating. The first insulation layer is a polyimide film containing nano-sized corona inhibitor particles. The glass fiber cladding consists of at least two layers of glass fibers with different braiding angles, with a decreasing braiding density gradient. The self-adhesive coating is a blend of thermoplastic elastomer and adhesive. The wear-resistant outer protective layer is a multi-layered composite structure, achieving high strength, wear resistance, corona resistance, and self-adhesion in the wind turbine cable.

[0007] To achieve the above objectives, this utility model provides a high-strength, wear-resistant, corona-resistant, self-adhesive glass fiber-clad sintered wire for wind turbines, comprising a cable body, the cable body including a conductor core layer disposed at the center, the conductor core layer being tightly wrapped with a first insulation layer, the outer wall of the first insulation layer being tightly wound with a glass fiber cladding layer, and a self-adhesive coating and a wear-resistant outer protective layer being sequentially disposed outside the glass fiber cladding layer.

[0008] As a further improvement of this utility model, in order to improve the flexibility and conductivity of the conductor core, further enhance the insulation and high temperature resistance of the conductor core, and help improve the overall performance of the cable, the conductor core layer adopts a multi-group structure. The conductor core layer includes several groups of conductor cores. The conductor cores adopt a multi-strand twisted metal wire structure. An internal insulation layer is provided between adjacent conductor cores. The external surface of the internal insulation layer is coated with a ceramic coating.

[0009] As a further improvement of this utility model, in order to effectively suppress the occurrence of corona phenomenon, reduce the damage of corona to cables, and improve the corona resistance of cables, the first insulation layer is made of polyimide film material, and nano-sized corona inhibitor particles are uniformly dispersed inside the first insulation layer.

[0010] As a further improvement of this utility model, in order to ensure that the glass fiber sheath has sufficient strength and can adapt to the needs of the cable under different bending conditions, the glass fiber sheath is made of at least two layers of glass fibers with different braiding angles. The braiding density of the glass fiber sheath decreases gradually from the inside to the outside. The braiding angle of the inner layer of the glass fiber sheath is 30°-45°, and the braiding angle of the outer layer of the glass fiber sheath is 45°-60°.

[0011] As a further improvement of this utility model, in order to enhance the bonding force between the layers of the cable and improve the overall structural stability of the cable, the self-adhesive coating is composed of a blend of thermoplastic elastomer and adhesive, and the self-adhesive coating is applied to the glass fiber sheath.

[0012] As a further improvement of this utility model, in order to enhance the insulation performance and high temperature resistance of the cable, the wear-resistant outer protective layer is a multi-layer composite structure, including an inner high-temperature resistant polyimide film layer and an outer wear-resistant silicone rubber layer; the high-temperature resistant polyimide film layer is in direct contact with the self-adhesive coating.

[0013] When this invention is in operation, the conductor core layer is composed of multiple sets of conductor cores. The conductor cores adopt a multi-strand twisted metal wire structure. This structure gives the conductor core layer good conductivity, enabling it to efficiently transmit current and provide a stable power supply for wind turbines.

[0014] An internal insulation layer between adjacent conductor cores isolates them from each other, preventing short circuits and other abnormalities and ensuring stable current transmission along a predetermined path. The ceramic coating applied to the outside of the internal insulation layer enhances insulation performance, improves heat resistance, and increases wear resistance.

[0015] The first insulation layer is made of polyimide film material. Polyimide film has excellent insulation properties, which can effectively prevent current from leaking from the conductor core layer to the outside, ensuring the electrical safety of the cable during use. The uniformly dispersed nano-sized corona suppressor particles inside the first insulation layer can effectively suppress the generation of corona discharge.

[0016] The glass fiber sheath is composed of at least two layers of glass fibers with different braiding angles, and the braiding density decreases gradually from the inside to the outside. The inner layer of glass fibers has a braiding angle of 30° - 45°, which allows the inner layer of glass fibers to fit tightly against the first insulation layer; the outer layer of glass fibers has a braiding angle of 45° - 60°, which, while ensuring a certain mechanical strength, also enhances the flexibility of the cable, making it easier to bend and install.

[0017] The self-adhesive coating is composed of a blend of thermoplastic elastomer and adhesive. When the cable is under certain conditions, the thermoplastic elastomer softens and the adhesive comes into play, enabling the adjacent cables or the cable to bond tightly to other components.

[0018] The wear-resistant outer protective layer has a multi-layer composite structure. The inner high-temperature resistant polyimide film layer is in direct contact with the self-adhesive coating. This film layer has excellent high-temperature resistance, maintaining structural stability in high-temperature environments and protecting the internal cables from high-temperature damage. Simultaneously, it bonds tightly with the self-adhesive coating, ensuring the integrity of the entire cable structure. The outer wear-resistant silicone rubber layer has excellent wear resistance, effectively resisting friction and abrasion from external objects.

[0019] The beneficial effects of this utility model are as follows:

[0020] Reasonable structure and excellent electrical performance:

[0021] Conductor core layer: The conductor core layer contains several groups of multi-strand twisted metal conductor cores. An internal insulation layer and a ceramic coating are set between adjacent conductor cores. This structure helps to reduce mutual interference between conductor cores, improve the stability and efficiency of current transmission, and at the same time, the ceramic coating can enhance the insulation performance between conductor cores, reduce the risk of partial discharge, and improve electrical safety and reliability.

[0022] First insulation layer: using polyimide film material, with uniformly dispersed nano-sized corona inhibitor particles inside, which can effectively improve insulation performance, suppress corona discharge, and reduce energy loss and electromagnetic interference caused by corona.

[0023] High mechanical strength and good protective performance:

[0024] Fiberglass sheathing: Composed of at least two layers of fiberglass with different braiding angles, the braiding density gradually decreases from the inside to the outside. The inner layer has a braiding angle of 30° - 45°, and the outer layer has a braiding angle of 45° - 60°. This design allows the fiberglass sheathing to provide uniform and excellent mechanical support in different directions, enhancing the cable's tensile, compressive, and bending resistance, effectively resisting external mechanical stress, and protecting the internal structure from damage.

[0025] Wear-resistant outer protective layer: This is a multi-layer composite structure. The inner layer is a high-temperature resistant polyimide film layer, which is in direct contact with the self-adhesive coating. The outer layer is a wear-resistant silicone rubber layer. This structure combines the advantages of both materials. The high-temperature resistant polyimide film layer provides excellent high-temperature resistance, preventing damage to the cable from high-temperature environments. The wear-resistant silicone rubber layer has excellent wear resistance, effectively resisting external friction and abrasion, protecting the cable for long-term stable operation in complex environments. Attached Figure Description

[0026] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings:

[0027] Figure 1 This is a structural diagram of the present invention.

[0028] The structure consists of: 1 conductor core layer, 2 first insulation layer, 3 glass fiber sheathing layer, 4 self-adhesive coating, 5 wear-resistant outer protective layer, 6 conductor core wire, 7 inner insulation layer, 8 ceramic coating, 9 polyimide film layer, and 10 silicone rubber layer. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions in this application, the following description is provided in conjunction with the appendix. Figure 1 The present invention will be further described below. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the protection scope of the present invention.

[0030] like Figure 1 The high-strength, wear-resistant, corona-resistant, self-adhesive glass fiber-clad sintered wire for wind turbines shown includes a cable body. The cable body includes a conductor core layer 1 disposed at the center. The conductor core layer 1 is tightly wrapped with a first insulation layer 2. The outer wall of the first insulation layer 2 is tightly wound with a glass fiber cladding layer 3. A self-adhesive coating layer 4 and a wear-resistant outer protective layer 5 are sequentially disposed on the outside of the glass fiber cladding layer 3.

[0031] The conductor core layer 1 adopts a multi-group structure. The conductor core layer includes several groups of conductor cores 6. The conductor cores 6 adopt a multi-strand twisted metal wire structure. An internal insulation layer 7 is provided between adjacent conductor cores 6. The external surface of the internal insulation layer 7 is coated with a ceramic coating 8.

[0032] The first insulating layer 2 is made of polyimide film material, and nano-sized corona inhibitor particles are uniformly dispersed inside the first insulating layer 2.

[0033] The glass fiber cladding 3 is composed of at least two layers of glass fibers with different weaving angles. The weaving density of the glass fiber cladding 3 decreases gradually from the inside to the outside. The weaving angle of the inner layer of glass fiber cladding 3 is 30°-45°, and the weaving angle of the outer layer of glass fiber cladding 3 is 45°-60°.

[0034] The self-adhesive coating 4 is composed of a blend of thermoplastic elastomer and adhesive, and is applied to the glass fiber sheath 3.

[0035] The wear-resistant outer protective layer 5 is a multi-layer composite structure, including an inner high-temperature resistant polyimide film layer 9 and an outer wear-resistant silicone rubber layer 10; the high-temperature resistant polyimide film layer 9 is in direct contact with the self-adhesive coating 4.

[0036] When this utility model is in operation, the conductor core layer 1 is composed of multiple sets of conductor cores 6. The conductor cores 6 adopt a multi-strand twisted metal wire structure. This structure enables the conductor core layer 1 to have good conductivity and efficiently transmit current, providing a stable power supply for wind turbines.

[0037] An internal insulation layer 7 is provided between adjacent conductor cores 6 to isolate each conductor core 6 from each other, preventing abnormal situations such as short circuits between conductor cores 6 and ensuring stable current transmission along a predetermined path. The ceramic coating 8 applied to the outside of the internal insulation layer 7 enhances insulation performance, improves heat resistance, and increases wear resistance.

[0038] The first insulation layer 2 is made of polyimide film material. Polyimide film has excellent insulation properties and can effectively prevent current from leaking from the conductor core layer 1 to the outside, ensuring the electrical safety of the cable during use. The uniformly dispersed nano-sized corona inhibitor particles inside the first insulation layer 2 can effectively suppress the generation of corona phenomena.

[0039] The glass fiber sheath 3 is composed of at least two layers of glass fibers with different braiding angles, and the braiding density decreases gradually from the inside to the outside. The inner layer of glass fibers has a braiding angle of 30° - 45°, which allows the inner layer of glass fibers to fit tightly against the first insulation layer 2; the outer layer of glass fibers has a braiding angle of 45° - 60°, which, while ensuring a certain mechanical strength, also enhances the flexibility of the cable, making it easier to bend and install the cable.

[0040] The self-adhesive coating 4 is composed of a blend of thermoplastic elastomer and adhesive. When the cable is under specific conditions, the thermoplastic elastomer softens and the adhesive plays its role, enabling adjacent cables or cables to be tightly bonded to other components.

[0041] The wear-resistant outer protective layer 5 has a multi-layer composite structure. The inner high-temperature resistant polyimide film layer 9 is in direct contact with the self-adhesive coating 4. This film layer has excellent high-temperature resistance, maintaining structural stability in high-temperature environments and protecting the internal cables from high-temperature damage. Simultaneously, it bonds tightly with the self-adhesive coating 4, ensuring the integrity of the entire cable structure. The outer wear-resistant silicone rubber layer 10 has excellent wear resistance, effectively resisting friction and abrasion from external objects.

[0042] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A high-strength, wear-resistant, corona-resistant, self-adhesive glass fiber-wrapped sintered wire for wind turbines, comprising a cable body, characterized in that, The cable body includes a conductor core layer (1) located at the center. The conductor core layer (1) is tightly wrapped with a first insulation layer (2). The outer wall of the first insulation layer (2) is tightly wrapped with a glass fiber sheath (3). A self-adhesive coating (4) and a wear-resistant outer protective layer (5) are sequentially provided on the outside of the glass fiber sheath (3).

2. The high-strength, wear-resistant, corona-resistant, self-adhesive glass fiber-wrapped sintered wire for wind turbines according to claim 1, characterized in that, The conductor core layer (1) adopts a multi-group structure. The conductor core layer (1) includes several groups of conductor cores (6). The conductor cores (6) adopt a multi-strand twisted metal wire structure. An internal insulation layer (7) is provided between adjacent conductor cores (6). The internal insulation layer (7) is coated with a ceramic coating (8).

3. The high-strength, wear-resistant, corona-resistant, self-adhesive glass fiber-wrapped sintered wire for wind turbines according to claim 1, characterized in that, The first insulating layer (2) is made of polyimide film material.

4. The high-strength, wear-resistant, corona-resistant, self-adhesive glass fiber-wrapped sintered wire for wind turbines according to claim 1, characterized in that, The glass fiber cladding (3) is made of at least two layers of glass fibers with different weaving angles. The weaving density of the glass fiber cladding (3) decreases gradually from the inside to the outside. The weaving angle of the inner layer of glass fiber cladding (3) is 30°-45°, and the weaving angle of the outer layer of glass fiber cladding (3) is 45°-60°.

5. The high-strength, wear-resistant, corona-resistant, self-adhesive glass fiber-wrapped sintered wire for wind turbines according to claim 1, characterized in that, The wear-resistant outer protective layer (5) is a multi-layer composite structure, including an inner high-temperature resistant polyimide film layer (9) and an outer wear-resistant silicone rubber layer (10); the high-temperature resistant polyimide film layer (9) is in direct contact with the self-adhesive coating (4).

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