Low wind resistance special cable for suspended wind power generation

Abstract

The present application relates to the technical field of cable, especially to a low wind resistance special cable for suspended wind power generation, comprising a carbon fiber reinforced core, a TPV sheath located at the periphery of the carbon fiber reinforced core and a copper conductor located at the outside of the TPV sheath; a TPE insulation layer is sleeved on the outside of the copper conductor according to the length, and a low wind resistance surface pit design is adopted on the outside surface of the TPE insulation layer. The low wind resistance special cable for suspended wind power generation of the present application designs the cable into two parts, the low altitude part below 20 meters, in order to ensure the safety, adopts the structure of conductor + insulation + sheath + carbon fiber reinforced core, the high altitude part above 20 meters, adopts the structure of conductor + sheath + carbon fiber reinforced core, air insulation is adopted between the conductors, the weight of the cable is reduced; two carbon fiber reinforced cores are combined into one and arranged in the middle of the wire core, the tensile force is ensured and the stability of the structure is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable, in particular to a low wind resistance special cable for suspended wind power generation. BACKGROUND

[0002] Suspended wind power generation is an innovative wind power generation technology, which uses helium-filled floating airships to lift wind turbine generators to high altitudes (above 500 meters) to capture stronger and more stable wind energy. The floating technology can reduce mechanical friction and significantly improve power generation efficiency. Suspended wind power generation represents the future direction of wind power technology, and is particularly suitable for low wind speed areas and high altitude wind energy development.

[0003] The cable used for suspended wind power generation has high requirements. Traditional cables are hard, heavy, and weak in weather resistance, which cannot meet the requirements of suspended wind power generation. There is an urgent need for a special cable with compact structure, soft cable, light weight, convenient winding and unwinding, strong anti-breaking capacity, strong power transmission capacity, strong ultraviolet resistance, weather resistance, and strong acid and alkali resistance. SUMMARY

[0004] The technical problem to be solved by the present application is that traditional cables are hard, heavy, and weak in weather resistance, which cannot meet the requirements of suspended wind power generation.

[0005] The technical solution adopted by the present application to solve the technical problem is a low wind resistance special cable for suspended wind power generation, comprising a carbon fiber reinforced core, a TPV sheath located outside the carbon fiber reinforced core, and a copper conductor located outside the TPV sheath.

[0006] A TPE insulation layer is provided outside the copper conductor according to the length, and a low wind resistance surface pit design is adopted on the outer side of the TPE insulation layer.

[0007] The depth of a single pit on the outer side of the TPE insulation layer is about 0.5mm, and the diameter is about 5mm.

[0008] An arc-shaped flow guide chamber is provided inside the TPV sheath and is connected to the copper conductor connection surface.

[0009] A sunken mounting groove is provided on both sides of the outer side of the TPV sheath.

[0010] A semi-embedded flow guide assembly is fixedly assembled inside the sunken mounting groove.

[0011] The air inlet of the semi-embedded flow guide assembly on one side of the outer side of the TPV sheath is connected to the arc-shaped flow guide chamber, and the air outlet of the semi-embedded flow guide assembly on the other side of the outer side of the TPV sheath is connected to the arc-shaped flow guide chamber.

[0012] The outer telescopic sealing cover is slidably assembled on the outer side of the semi-embedded flow guide assembly, and an arc-shaped lateral air vent is formed on the outer side of the outer telescopic sealing cover.

[0013] The semi-embedded flow guide assembly comprises a flow guide cover fixed inside the sunken mounting groove, a centrifugal flow guide fan installed inside the flow guide cover, and an embedded support rod fixed on the inner top surface of the flow guide cover.

[0014] The arc-shaped flow guide chamber is connected with the inside of the semi-embedded flow guide assembly.

[0015] The arc-shaped flow guide chamber is connected with the inside of the semi-embedded flow guide assembly.

[0016] The beneficial effects of the present application are:

[0017] (1) The low wind resistance special cable for suspended wind power generation of the present application is designed as two parts, the low altitude part below 20 meters, and the high altitude part above 20 meters. For the low altitude part, the conductor + insulation + sheath + carbon fiber reinforced core structure is adopted to ensure safety, and for the high altitude part, the conductor + sheath + carbon fiber reinforced core structure is adopted. The conductors are air insulated to reduce the weight of the cable.

[0018] (2) The two carbon fiber reinforced cores are combined into one and arranged in the middle of the wire core to ensure the tensile force and the stability of the structure.

[0019] (3) The conductors above 20 meters are directly in contact with air, and the flowing air can carry away the heat generated by the conductors during power transmission, thereby reducing the temperature of the cable body, improving the current carrying capacity of the cable, and reducing the power transmission loss.

[0020] (4) The cable sheath material below 20 meters is minimized to cover only the central carbon fiber wire core and part of the insulation wire core, and then an arc-shaped flow guide chamber is formed in the TPV sheath to communicate with the copper conductor connecting surface. The semi-embedded flow guide assembly outside the TPV sheath guides the internal air, so that the largest area of the insulation wire core is in contact with the air, which can reduce the weight of the cable and enhance the heat dissipation of the cable conductor, thereby improving the current carrying capacity of the cable.

[0021] (5) The wire core is designed with low wind resistance surface dimples, with a depth of about 0.5 mm and a diameter of about 5 mm, which can reduce the wind pressure by about 15% compared with the circular surface, thereby improving the safety and stability of the power transmission system. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below in conjunction with the drawings and examples.

[0023] Figure 1 is the structure sectional view below 20 meters of the present application.

[0024] Figure 2 is the sectional view of the structure above 20 meters of the present application.

[0025] Figure 3 is the internal structure diagram of the exhaust end of the semi-embedded flow guide assembly in the present application.

[0026] Figure 4 is the internal structure diagram of the exhaust end of the semi-embedded flow guide assembly in the present application. DETAILED DESCRIPTION

[0027] The present application will now be further described in detail with reference to the drawings. These drawings are simplified schematic diagrams and only show the basic structure of the present application in a schematic manner, and thus only show the components related to the present application.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The low wind resistance special cable for suspended wind power generation shown in the drawings comprises a carbon fiber reinforced core 1, a TPV sheath 2 located on the periphery of the carbon fiber reinforced core 1, and a copper conductor 3 located on the outside of the TPV sheath 2.

[0030] A TPE insulation layer 4 is sleeved on the outside of the copper conductor 3 according to the length, and a low wind resistance surface pit design is adopted on the outer side surface of the TPE insulation layer 4.

[0031] The cable is designed as two parts, the low-altitude part below 20 meters, in order to ensure the safety in use, the conductor + insulation + sheath + carbon fiber reinforced core structure is adopted, and the high-altitude part above 20 meters, the conductor + sheath + carbon fiber reinforced core structure is adopted.

[0032] In order to reduce the wind pressure, the depth of a single pit is about 0.5mm, and the diameter is about 5mm, which can reduce the wind pressure by about 15% compared with the circular surface, and improve the safety and stability of the power transmission system.

[0033] In order to further reduce the weight and cooperate with the internal air communication, an arc-shaped flow guide chamber 5 is arranged in the TPV sheath 2 to communicate with the connecting surface of the copper conductor 3.

[0034] In order to cooperate with the installation and fixation, a sunken mounting groove is arranged on the both sides of the outer side surface of the TPV sheath 2.

[0035] In order to cooperate with the active drive, the semi-embedded flow guide assembly 6 is fixedly assembled inside the sunken mounting groove.

[0036] In order to cooperate with the communication gas guide, the air inlet of the semi-embedded flow guide assembly 6 on one side of the outer side of the TPV sheath 2 is connected in communication with the arc-shaped flow guide chamber 5, and the air outlet of the semi-embedded flow guide assembly 6 on the other side of the outer side of the TPV sheath is connected in communication with the arc-shaped flow guide chamber 5.

[0037] In order to cooperate with sealing and opening, the outer telescopic sealing cover 7 is slidingly assembled on the outer side of the semi-embedded flow guide assembly 6, and the arc-shaped lateral air outlet 8 is formed on the outer side of the outer telescopic sealing cover 7.

[0038] When the outer telescopic sealing cover 7 slides outward, the outside is connected in communication with the air inlet at the top of the semi-embedded flow guide assembly 6 through the arc-shaped lateral air outlet 8.

[0039] In order to cooperate with the control, the semi-embedded flow guide assembly 6 includes a flow guide cover 61 fixed inside the sunken mounting groove, a centrifugal flow guide fan 62 installed inside the flow guide cover 61, and an embedded support rod 63 fixed on the inner top surface of the flow guide cover 61.

[0040] The centrifugal flow guide fan 62 guides the air at the air inlet of the flow guide cover 61 into the lateral air outlet through high-speed rotation.

[0041] The embedded support rod 63 controls the sliding adjustment of the outer telescopic sealing cover 7 on the outer side of the flow guide cover 61 through telescopic extension.

[0042] In order to cooperate with the communication gas guide, the arc-shaped flow guide chamber 5 is connected in communication with the inside of the semi-embedded flow guide assembly 6.

[0043] In order to monitor the air temperature and humidity inside and outside the arc-shaped flow guide chamber 5 in real time, so as to automatically control the opening and closing of the embedded flow guide assembly 6, the temperature and humidity sensor module 9 is installed on the communication end and the outer side of the semi-embedded flow guide assembly 6.

[0044] When the temperature inside the arc-shaped flow guide chamber 5 is higher than the outside temperature, the embedded support rod 63 on both sides of the outer side of the TPV sheath 2 expands and contracts to control the lifting of the outer telescopic sealing cover 7, so that a gap is formed between the lower surface of the outer telescopic sealing cover 7 and the upper surface of the flow guide cover 61. At this time, the centrifugal flow guide fan 62 rotates to exhaust the air inside the arc-shaped flow guide chamber 5 and then introduces external air to form a circulating flow channel. When the humidity inside the arc-shaped flow guide chamber 5 is higher than the outside humidity, the embedded support rod 63 on both sides of the outer side of the TPV sheath 2 expands and contracts to control the lifting of the outer telescopic sealing cover 7, so that a gap is formed between the lower surface of the outer telescopic sealing cover 7 and the upper surface of the flow guide cover 61. At this time, the centrifugal flow guide fan 62 rotates to exhaust the air inside the arc-shaped flow guide chamber 5 and then introduces external air to form a circulating flow channel. It is determined that the TPV sheath 2 is damaged, and at the same time, an alarm signal is sent to the remote terminal through the built-in wireless warning module.

[0045] The inner top surface of the flow guide cover 61 on one side of the TPV sheath 2 is provided with an air inlet, and the inner position of the sunken mounting groove is provided with an exhaust port connected with the arc-shaped flow guide chamber 5. The inner bottom surface of the flow guide cover 61 on the other side of the TPV sheath 2 is provided with an air inlet, and the outer side is provided with an exhaust port connected with the outside.

[0046] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. A low wind resistance special cable for suspended wind power generation, characterized by: It includes carbon fiber reinforced core (1), TPV sheath (2) located in the outer periphery of carbon fiber reinforced core (1) and copper conductor (3) located outside TPV sheath (2); The outer side of the copper conductor (3) is sleeved with a TPE insulation layer (4) according to the length, and a low wind resistance surface pit design is adopted on the outer side surface of the TPE insulation layer (4); The TPV sheath (2) is internally provided with an arc-shaped flow guide chamber (5) in communication with the connecting surface of the copper conductor (3); the outer side surface of the TPV sheath (2) is provided with a sunken mounting groove on both sides; and a semi-embedded flow guide assembly (6) is fixedly assembled in the sunken mounting groove; The outer side surface of the semi-embedded flow guide assembly (6) is slidably assembled with an external telescopic sealing cover (7), and the outer side surface of the external telescopic sealing cover (7) is provided with an arc-shaped lateral air vent (8); The semi-embedded flow guide assembly (6) includes a flow guide cover shell (61) fixed in the sunken mounting groove, a centrifugal flow guide fan (62) installed in the flow guide cover shell (61), and an embedded support rod (63) fixed on the inner top surface of the flow guide cover shell (61).

2. The low wind resistance special cable for floating wind power generation according to claim 1, characterized in that: The depth of the single pit on the outer side surface of the TPE insulation layer (4) is 0.5mm, and the diameter is 5mm.

3. The low wind resistance special cable for floating wind power generation according to claim 1, characterized in that: The air inlet of the semi-embedded flow guide assembly (6) on one side of the outer side surface of the TPV sheath (2) is in communication with the arc-shaped flow guide chamber (5), and the air outlet of the semi-embedded flow guide assembly (6) on the other side of the outer side surface of the TPV sheath (2) is in communication with the arc-shaped flow guide chamber (5).

4. The low wind resistance special cable for floating wind power generation according to claim 1, characterized in that: The arc-shaped flow guide chamber (5) is in communication with the inside of the semi-embedded flow guide assembly (6).

5. The low wind resistance special cable for floating wind power generation according to claim 4, characterized in that: The arc-shaped flow guide chamber (5) and the outer side surface of the semi-embedded flow guide assembly (6) are both provided with a temperature and humidity sensor module (9) at the communication end.

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