Torsion-resistant aluminum alloy lightning-protection cable for wind power generation

Abstract

The invention relates to the technical field of wind power generation, and discloses a wind power generation torsion-resistant aluminum alloy lightning protection cable which comprises a cable core, the cable core is wrapped with a first insulating layer, the first insulating layer is wrapped with a heat-resistant layer, a second insulating layer is fixed to the outer side of the heat-resistant layer, and the second insulating layer is fixed to the outer side of the heat-resistant layer. A groove is formed in the outer surface of the second insulating layer, and a metal sleeve is fixed to the outer side of the second insulating layer. According to the torsion-resistant aluminum alloy lightning-protection cable for wind power generation, when the cable is struck by lightning, the metal sleeve can lead electricity into the ground to play a role in lightning protection, the components in the cable are expanded by changing heat, the grooves can be contracted, and the through holes can exhaust air, so that the components in the cable can be effectively prevented from being deformed and damaged, and the limiting rods play a role in limiting the heat-resistant layer and the second insulating layer; connection between the heat-resistant layer and the second insulating layer can be enhanced, relative torsion displacement of the heat-resistant layer and the second insulating layer is avoided, and the overall structure is more compact and firmer.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, in particular to a wind power generation torsion-resistant aluminum alloy lightning protection cable. Background Art

[0002] Wind power cables are an indispensable and important part of wind power generation systems. Their main function is to transmit power and control signals within wind turbine nacelles and towers.

[0003] The connections between the internal components of existing cables are not tight and strong enough. When subjected to strong winds, the internal components are prone to relative twisting. When using cables for lightning protection, if the cables are struck by lightning, their internal temperature will rise, and the internal components are prone to heat expansion, thereby being squeezed and deformed, and easily damaged. To address the above problems, existing equipment needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a wind power generation torsion-resistant aluminum alloy lightning protection cable to solve the problem proposed in the above background technology that the connection between the internal components of the existing cable is not tight and firm enough, and the internal components are prone to relative twisting when impacted by strong winds. When using the cable for lightning protection, if the cable is struck by lightning, its internal temperature will rise, and the internal components are prone to heat expansion, thereby being squeezed and deformed, and easily damaged.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a wind power generation torsion-resistant aluminum alloy lightning protection cable, comprising a cable core, the outer side of the cable core is wrapped with a first insulating layer, the outer side of the first insulating layer is wrapped with a heat-resistant layer, the outer side of the heat-resistant layer is fixed with a second insulating layer, the outer surface of the second insulating layer is provided with a groove, and the outer side of the second insulating layer is fixed with a metal sleeve.

[0006] Preferably, the cable core is made of aluminum alloy, and there are five cable cores, which are evenly distributed circumferentially on the inner side of the heat-resistant layer.

[0007] Preferably, an asbestos core is fixed between the five first insulating layers.

[0008] Preferably, a limiting rod is fixed on the outer side of the heat-resistant layer, and the limiting rod extends into the second insulating layer.

[0009] Preferably, the limiting rods are evenly distributed on the heat-resistant layer in the circumferential direction.

[0010] Preferably, the grooves are evenly distributed circumferentially on the second insulating layer.

[0011] Preferably, the metal sleeve is provided with through holes, and the through holes are arranged in a one-to-one correspondence with the second insulating layer.

[0012] Preferably, a protective mesh sleeve is fixed to the outside of the metal sleeve.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This wind power generation torsion-resistant aluminum alloy lightning protection cable can achieve the purpose of buffering and preventing expansion and deformation through the coordinated use of the asbestos core, grooves, metal sleeves and through holes. The asbestos core is compressible, which conveniently acts as a buffer. When the device is struck by lightning, the metal sleeve can conduct electricity into the ground to protect against lightning. When the internal components of the device heat up and expand, the grooves can shrink and the through holes can be vented, effectively preventing deformation and damage of the internal components of the device. 2. The wind power generation torsion-resistant aluminum alloy lightning protection cable can achieve the purpose of heat resistance and wear resistance through the mutual use of the heat-resistant layer and the protective net sleeve. The heat-resistant layer can play a heat-resistant role, and the material of the protective net sleeve has good wear-resistant effect, which can play a comprehensive protection role. 3. The wind power generation torsion-resistant aluminum alloy lightning protection cable can achieve the purpose of limiting torsion resistance through the mutual cooperation of the heat-resistant layer, the limiting rod and the second insulating layer. The limiting rod plays a limiting role on the heat-resistant layer and the second insulating layer, which can strengthen the connection between the heat-resistant layer and the second insulating layer, avoid relative torsional displacement between the heat-resistant layer and the second insulating layer, and make the overall structure more compact and firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the heat-resistant layer and the limiting rod of the present invention; Figure 3 Schematic diagram of the second insulating layer and groove distribution structure of the present invention.

[0015] In the figure: 1. Cable core; 2. First insulation layer; 3. Asbestos core; 4. Heat-resistant layer; 5. Limit rod; 6. Second insulation layer; 7. Groove; 8. Metal sleeve; 9. Through hole; 10. Protective mesh sleeve. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0017] See also Figures 1 to 3The present invention provides a technical solution: a wind power generation torsion-resistant aluminum alloy lightning protection cable, comprising a cable core 1, the outer side of the cable core 1 is wrapped with a first insulating layer 2, the outer side of the first insulating layer 2 is wrapped with a heat-resistant layer 4, the outer side of the heat-resistant layer 4 is fixed with a second insulating layer 6, the outer surface of the second insulating layer 6 is provided with a groove 7, and the outer side of the second insulating layer 6 is fixed with a metal sleeve 8.

[0018] In this embodiment, Figure 1 As shown, the cable core 1 is made of aluminum alloy, there are five cable cores 1, and the five cable cores 1 are evenly distributed circumferentially on the inner side of the heat-resistant layer 4. The circumferentially evenly distributed cable cores 1 can make the wiring effect more neat and orderly, and the heat-resistant layer 4 can play a heat-resistant role.

[0019] In this embodiment, Figure 1 As shown, an asbestos core 3 is fixed between the five first insulating layers 2. The asbestos core 3 is compressible and can conveniently play a buffering role.

[0020] In this embodiment, Figure 1 and Figure 2 As shown, a limiting rod 5 is fixed on the outside of the heat-resistant layer 4, and the limiting rod 5 extends into the second insulating layer 6. The limiting rod 5 limits the heat-resistant layer 4 and the second insulating layer 6, which can strengthen the connection between the heat-resistant layer 4 and the second insulating layer 6 and avoid relative torsional displacement between the heat-resistant layer 4 and the second insulating layer 6.

[0021] In this embodiment, Figure 1 and Figure 2 As shown, the limiting rods 5 are evenly distributed on the heat-resistant layer 4 in the circumferential direction, and the limiting rods 5 evenly distributed in the circumferential direction have a better limiting effect.

[0022] In this embodiment, Figure 1 and Figure 3 As shown, the grooves 7 are evenly distributed on the second insulating layer 6 in the circumferential direction. When the device is struck by lightning, the temperature of the device rises and the interior expands. At this time, the grooves 7 contract, which facilitates the exhaust protection.

[0023] In this embodiment, Figure 1 As shown, the metal sleeve 8 is provided with through holes 9, and the through holes 9 are arranged in a one-to-one correspondence with the second insulating layer 6. When the device is struck by lightning, the groove 7 can shrink and the through holes 9 can be vented to prevent the internal temperature of the device from expanding and deforming.

[0024] In this embodiment, Figure 1 As shown, a protective mesh sleeve 10 is fixed to the outside of the metal sleeve 8, and the protective mesh sleeve 10 can play a role in wear-resistant protection.

[0025] The use method and advantages of the present invention: The working process of the wind power generation torsion-resistant aluminum alloy lightning protection cable is as follows: like Figures 1 to 3 As shown: the first insulating layer 2 and the second insulating layer 6 can play an insulating role, the asbestos core 3 is compressible and can play a buffering role, the limit rod 5 can strengthen the connection between the heat-resistant layer 4 and the second insulating layer 6, when the device is struck by lightning, the metal sleeve 8 can conduct electricity to the ground, which is convenient for achieving the lightning protection effect. The inside of the device becomes hot and expands, the groove 7 can shrink, and the through hole 9 can exhaust air to avoid deformation and damage of internal components.

[0026] In summary, the wind power generation torsion-resistant aluminum alloy lightning protection cable achieves the purpose of buffering, avoiding expansion and deformation, heat resistance, wear resistance, and limited torsion resistance, meeting people's usage needs.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

[0028] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the protection content of the present invention.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wind power generation torsion-resistant aluminum alloy lightning protection cable, comprising a cable core (1), characterized in that: The outer side of the cable core (1) is wrapped with a first insulating layer (2), the outer side of the first insulating layer (2) is wrapped with a heat-resistant layer (4), the outer side of the heat-resistant layer (4) is fixed with a second insulating layer (6), the outer surface of the second insulating layer (6) is provided with a groove (7), and the outer side of the second insulating layer (6) is fixed with a metal sleeve (8).

2. The wind power generation torsion-resistant aluminum alloy lightning protection cable according to claim 1, characterized in that: The cable core (1) is made of aluminum alloy, and five cable cores (1) are provided, and the five cable cores (1) are evenly distributed circumferentially on the inner side of the heat-resistant layer (4).

3. The wind power generation torsion-resistant aluminum alloy lightning protection cable according to claim 1, characterized in that: An asbestos core (3) is fixed between the five first insulating layers (2).

4. The wind power generation torsion-resistant aluminum alloy lightning protection cable according to claim 1, characterized in that: A limiting rod (5) is fixed on the outer side of the heat-resistant layer (4), and the limiting rod (5) extends into the second insulating layer (6).

5. The wind power generation torsion-resistant aluminum alloy lightning protection cable according to claim 4, characterized in that: The limiting rods (5) are evenly distributed on the heat-resistant layer (4) in the circumferential direction.

6. The wind power generation torsion-resistant aluminum alloy lightning protection cable according to claim 1, characterized in that: The grooves (7) are evenly distributed circumferentially on the second insulating layer (6).

7. The wind power generation torsion-resistant aluminum alloy lightning protection cable according to claim 1, characterized in that: The metal sleeve (8) is provided with through holes (9), and the through holes (9) are arranged in a one-to-one correspondence with the second insulating layer (6).

8. The wind power generation torsion-resistant aluminum alloy lightning protection cable according to claim 1, characterized in that: A protective mesh sleeve (10) is fixed to the outside of the metal sleeve (8).

Images