High-temperature-resistant cable for photovoltaic power generation

Abstract

The invention relates to the technical field of cables, and provides a high-temperature-resistant cable for photovoltaic power generation, which comprises a conductor, an insulating layer and a sheath, and further comprises a plurality of shading mechanisms and an air cooling mechanism, the shading mechanisms are used for shading the sheath, each shading mechanism comprises a mounting ring and a shading plate, the mounting ring is detachably connected to the outside of the sheath, and the shading plate is detachably connected to the outside of the sheath. The light shielding plate is mounted on the mounting ring, the light shielding plate is movably arranged on the mounting ring, one end of the light shielding plate is fixedly connected with a connecting plate, the other end of the light shielding plate is provided with a connecting port matched with the connecting plate, the connecting plate is detachably connected to the interior of the connecting port, and the air cooling mechanism is used for conducting air cooling on the sheath and comprises a driving shaft and fan blades. The driving shaft is rotationally arranged on the mounting ring, and the fan blades are fixedly connected to the outer portion of the driving shaft. According to the technical scheme, the problem that a photovoltaic cable in the prior art lacks an active cooling part and is easily damaged in a high-temperature light environment for a long time is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to a high temperature resistant cable for photovoltaic power generation. Background Art

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect of semiconductor interfaces to directly convert light energy into electrical energy. It is mainly composed of three parts: solar panels (modules), controllers and inverters. Photovoltaic cables are important connecting components in the wiring system used to connect solar photovoltaic modules and inverters.

[0003] Photovoltaic power generation systems are usually installed outdoors in environments with strong sunlight. Photovoltaic cables will be exposed to high temperatures and ultraviolet radiation. Most photovoltaic cables on the current market usually rely on the cable material to provide high temperature protection for the cables, and lack active cooling components. Under long-term high temperature and light, the sheath of the photovoltaic cable will become fragile or even decompose the insulation layer, increasing the risk of cable short circuits and posing hidden dangers such as fire or personal injury. Summary of the invention

[0004] The present invention provides a high temperature resistant cable for photovoltaic power generation, which solves the problem in the prior art that photovoltaic cables lack active cooling components and are easily damaged when exposed to high temperature and light environments for a long time.

[0005] The technical solution of the present invention is as follows: High temperature resistant cable for photovoltaic power generation, including conductor, insulation layer and sheath, and also including: A shading mechanism, wherein a plurality of shading mechanisms are provided for shading the sheath, and the shading mechanism comprises: a mounting ring, the mounting ring being detachably connected to the outside of the sheath; a sunshade, the sunshade being mounted on the mounting ring; An air cooling mechanism, the air cooling mechanism is used to cool the jacket by air, and the air cooling mechanism comprises: a drive shaft, the drive shaft being rotatably disposed on the mounting ring; The fan blades are fixedly connected to the outside of the driving shaft.

[0006] In order to improve air fluidity and improve the air cooling effect, there is a gap between the two shading plates in two adjacent shading mechanisms.

[0007] In order to provide more comprehensive shading for the sheath, the shading plate is movably arranged on the mounting ring, one end of the shading plate is fixedly connected to a connecting plate, the other end of the shading plate is provided with a connecting port matching the connecting plate, and the connecting plate is detachably connected to the inside of the connecting port.

[0008] In order to realize the movement of the shading plate and the rotation of the fan blades, a driving mechanism is also included, and the driving mechanism is used to drive the shading plate to move, and the driving mechanism includes: A mounting frame, the mounting frame is fixedly connected to the mounting ring, and the shading plate and the mounting frame are in sliding cooperation; A reciprocating screw rod is rotatably arranged on the mounting frame, the shading plate is fixedly connected with a moving block, the moving block is threadedly connected to the reciprocating screw rod, and the driving shaft is transmission-connected to the reciprocating screw rod.

[0009] In order to realize the synchronous movement of multiple sunshades, a connecting assembly is also included, and the connecting assembly is used to connect two adjacent driving shafts or two adjacent reciprocating screws. The connecting assembly includes: A connecting head, the driving shaft and the reciprocating screw are both provided with connecting grooves matching the connecting head, and a connecting rod is fixedly connected between two adjacent connecting heads.

[0010] In order to further cool the cable, a water cooling mechanism is also included, and the water cooling mechanism is used to cool the sheath by water. The water cooling mechanism includes: A water collecting tank, the water collecting tank is fixedly connected to the sunshade; A water inlet bucket, the water inlet bucket is fixedly connected to the top of the water collecting tank; A water outlet pipe is connected to the bottom of the water collecting tank, and a water outlet of the water outlet pipe passes through the sunshade.

[0011] The working principle and beneficial effects of the present invention are: 1. In the present invention, the sunshade is installed on the outside of the sheath through the installation ring to provide light shielding protection for the cable, reduce the high temperature and radiation damage to the cable caused by direct sunlight, and drive the fan blades to rotate through the driving shaft to perform air cooling between the sunshade and the cable, thereby further improving the cooling effect on the cable and improving the high temperature resistance of the cable.

[0012] 2. In the present invention, there are gaps between the shading plates, which can promote the flow of air and improve the effect of air cooling. The reciprocating screw can be driven to rotate through the driving shaft, thereby driving the shading plates to reciprocate on the outside of the cable to shade different areas of the sheath, thereby preventing the gaps between the shading plates from being damaged by light for a long time.

[0013] 3. In the present invention, rainwater is collected by a water collecting tank, and the rainwater enters the water collecting tank through a water inlet bucket. The water inlet bucket is large at the top and small at the bottom, which can reduce the evaporation of rainwater in the water collecting tank. The rainwater is dripped under the sunshade, that is, on the surface of the sheath, through the water outlet pipe, and the sheath is water-cooled. In the dripping process, the fan blades blow the water droplets to expand the range of water cooling, thereby ensuring the cooling effect on the cable.

[0014] 4. Therefore, compared with the photovoltaic cables in the prior art, the present invention sets a sunshade on the outside of the cable to block direct sunlight, and drives the fan blades to rotate through the driving shaft to cool the cable with air. At the same time, the driving shaft drives the reciprocating screw to rotate, so that the sunshade moves back and forth to shade different areas of the cable. Rainwater is collected by a water collecting tank, and water drops on the surface of the sheath through an outlet pipe. At the same time, the fan blades expand the range of water droplets, thereby improving the cooling effect on the cable, actively cooling the cable, and having good high temperature resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic structural diagram of the shading mechanism, air cooling mechanism, driving mechanism and connecting assembly of the present invention; Figure 3 It is a schematic diagram of the structures of the shading mechanism, the air cooling mechanism and the driving mechanism of the present invention; Figure 4 It is a structural schematic diagram of the air cooling mechanism and the driving mechanism of the present invention; Figure 5 It is a structural schematic diagram of the driving mechanism and the connecting assembly of the present invention; Figure 6 It is a structural schematic diagram of the water cooling mechanism of the present invention; Figure 7 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle; Figure 8 For the present invention Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0017] In the figure: 1. Conductor; 2. Insulation layer; 3. Sheath; 4. Connecting plate; 101. mounting ring; 102. sunshade; 201, driving shaft; 202, fan blade; 301, mounting frame; 302, reciprocating screw; 303, slider; 304, motor; 401, connector; 402, connecting rod; 501, water collecting tank; 502, water inlet hopper; 503, water outlet pipe. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 8 As shown, this embodiment proposes a high temperature resistant cable for photovoltaic power generation, including a conductor 1, an insulating layer 2 and a sheath 3. The insulating layer 2 is wrapped around the outside of the conductor 1 to insulate and protect the conductor 1. The sheath 3 is wrapped around the outside of the insulating layer 2 to protect the insulating layer 2. At the same time, the sheath 3 and the insulating layer 2 are made of high temperature resistant materials to ensure the high temperature resistance of the cable. It also includes a shading mechanism and an air cooling mechanism. Compared with the photovoltaic cable in the prior art, the present invention sets a shading plate 102 on the outside of the cable to isolate direct sunlight, drives the fan blades 202 to rotate through the driving shaft 201, and air-cools the cable. At the same time, the driving shaft 201 drives the reciprocating screw 302 to rotate, so that the shading plate 102 moves back and forth to shade different areas of the cable, collects rainwater through the water collecting tank 501, and drops water on the surface of the sheath 3 through the outlet pipe 503. At the same time, the fan blades 202 expand the range of water drops, improve the cooling effect on the cable, and actively cool the cable, with good high temperature resistance.

[0020] There are multiple shading mechanisms for shading the sheath 3. The shading mechanism includes a mounting ring 101 and a shading plate 102. The mounting ring 101 is detachably connected to the outside of the sheath 3. The mounting ring 101 is composed of two half rings, which are detachably connected by bolts. The inside of the half rings is fixedly connected with an anti-slip pad. The mounting ring 101 can be fixedly connected to the outside of the sheath 3 by bolts. The shading plate 102 is installed on the mounting ring 101. The shading plate 102 is arc-shaped. When the mounting ring 101 is fixed to the outside of the sheath 3, the position of the shading plate 102 is adjusted to be located above the sheath 3 to provide shading protection for the sheath 3 and prevent direct sunlight from shining on the sheath 3, causing high temperature or radiation damage to the sheath 3.

[0021] The air cooling mechanism is used to cool the sheath 3. The air cooling mechanism includes a driving shaft 201 and fan blades 202. The driving shaft 201 is rotatably set on the mounting ring 101. A plurality of fan blades 202 are provided. The fan blades 202 are fixedly connected to the outside of the driving shaft 201. In order to improve air flow and improve the air cooling effect, there is a gap between the two shading plates 102 in two adjacent shading mechanisms. The driving shaft 201 drives the plurality of fan blades 202 to rotate, and an airflow is formed between the shading plates 102 and the sheath 3 to blow away the high-temperature air outside the sheath 3, thereby achieving air cooling of the cable. At the same time, there is a gap between the shading plates 102, which can promote air flow between the shading plates 102 and the sheath 3 and improve the air cooling effect.

[0022] In order to provide more comprehensive shading for the sheath 3, the shading plate 102 is movably arranged on the mounting ring 101, one end of the shading plate 102 is fixedly connected to a connecting plate 4, and the other end of the shading plate 102 is provided with a connecting port matching the connecting plate 4, and the connecting plate 4 is detachably connected to the inside of the connecting port by bolts, and the connecting plate 4 has a certain length, so that there is a gap between two adjacent shading plates 102, and the connecting plate 4 is inserted into the inside of the connecting port and fixed by bolts, so that the two shading plates 102 can be connected, so that multiple shading plates 102 can move synchronously, and when installing the photovoltaic cable, try to make most of its area in a straight line state, select a suitable number of shading plates 102 and install them within the straight line range of the photovoltaic cable, and provide shading protection for the photovoltaic cable, and at the same time, multiple shading plates 102 can move in a straight line along the photovoltaic cable, and provide more comprehensive shading protection for the outside of the photovoltaic cable, so as to prevent sunlight from shining on the same position of the sheath 3 for a long time through the gap between the shading plates 102, thereby improving the service life of the sheath 3.

[0023] In order to realize the movement of the shading plate 102 and the rotation of the fan blade 202, a driving mechanism is also included, which is used to drive the shading plate 102 to move. The driving mechanism includes a mounting frame 301 and a reciprocating screw 302. The mounting frame 301 is fixedly connected to the mounting ring 101. The shading plate 102 and the mounting frame 301 are in sliding cooperation. A slider 303 is fixedly connected to the shading plate 102. A sliding groove matching the slider 303 is provided on the mounting frame 301. The reciprocating screw 302 is rotatably arranged on the mounting frame 301. The shading plate 102 is fixedly connected to a moving block 305. The moving block 305 is threadedly connected to the reciprocating screw 302. The driving shaft 201 is transmission-connected to the reciprocating screw 302. The outside of the reciprocating screw 302 is fixedly provided with a sprocket, and the two sprockets are connected by a chain transmission. A motor 304 is installed on the mounting frame 301 located at one end of the multiple mounting frames 301, and the corresponding driving shaft 201 on the mounting frame 301 is fixedly connected to the output end of the motor 304. The motor 304 can drive the driving shaft 201 and the multiple fan blades 202 to rotate, and the jacket 3 is cooled by air. At the same time, under the transmission action of the sprocket chain, the reciprocating screw 302 is rotated, driving the moving block 305 and the shading plate 102 to move back and forth, and under the action of the connecting plate 4, the multiple shading plates 102 are driven to move synchronously, so as to shade different areas of the jacket 3 and prevent sunlight from irradiating the same position for a long time.

[0024] In order to realize the synchronous movement of multiple shading plates 102, a connecting component is also included, and the connecting component is used to connect two adjacent driving shafts 201 or two adjacent reciprocating screws 302. The connecting component includes a connecting head 401. The driving shaft 201 and the reciprocating screw 302 are both provided with a connecting groove that matches the connecting head 401. A connecting rod 402 is fixedly connected between two adjacent connecting heads 401. The connecting head 401 is set to a polygonal pointed shape, and a chamfer is set at the opening of the connecting groove to facilitate the insertion of the connecting head 401 into the interior of the connecting groove. The length of the connecting rod 402 is adapted to the distance between the two adjacent driving shafts 201 and the distance between the two reciprocating screws 302. When the mounting ring 101 and the shading plate 102 are connected, When installing on the sheath 3, first insert a connector 401 into the connecting groove of the installed drive shaft 201 and the reciprocating screw 302, then install the new sunshade 102 on the outside of the sheath 3, insert the connecting plate 4 into the connecting port of the installed sunshade 102, and at the same time insert the connector 401 into the connecting groove of the drive shaft 201 and the reciprocating screw 302 to be installed, and then fix the mounting ring 101 to realize the connection between multiple drive shafts 201 and multiple reciprocating screws 302. The output end of the motor 304 is fixedly connected with the connector 401, and the connector 401 is inserted into the connecting groove on the corresponding drive shaft 201 to realize the connection between the motor 304 and the drive shaft 201.

[0025] In order to further cool the cable, a water cooling mechanism is also included. The water cooling mechanism is used to cool the sheath 3 with water. The water cooling mechanism includes a water collecting tank 501, a water inlet bucket 502 and a water outlet pipe 503. The water collecting tank 501 is fixedly connected to the sunshade 102, the water inlet bucket 502 is fixedly connected to the top of the water collecting tank 501, the water outlet pipe 503 is connected to the bottom of the water collecting tank 501, and the water outlet of the water outlet pipe 503 passes through the sunshade 102. The rainwater is discharged through the water inlet bucket 502. The rainwater falls into the water collecting box 501 for collection. The cross-sectional area of ​​the top of the water inlet bucket 502 is larger, and the cross-sectional area of ​​the bottom is smaller, which can reduce the evaporation of rainwater in the water collecting box 501. The diameter of the outlet pipe 503 is small, and the rainwater slowly drips under the sunshade 102. After the rainwater drips through the outlet pipe 503, the fan blades 202 blow the rainwater to diffuse the area of ​​the rainwater, thereby achieving water cooling of more positions of the sheath 3 and improving the high temperature resistance of the photovoltaic cable.

[0026] The working principle or use process of the high temperature resistant cable for photovoltaic power generation is: First, the photovoltaic cable is laid at a suitable position of the photovoltaic power generation system so that most of the area of ​​the photovoltaic cable is arranged in a straight line as much as possible. According to the length of the photovoltaic cable in a straight line, a suitable number of shading plates 102 are selected, and the shading plates 102 are fixedly connected to the outside of the sheath 3 through the mounting ring 101. At the same time, the position of the shading plates 102 is adjusted so that the sheath 3 is shaded to reduce the direct sunlight on the sheath 3 as much as possible; During installation of the sunshade 102, a connector 401 in the connecting assembly is inserted into the already installed drive shaft 201 and reciprocating screw 302, and then the connecting plate 4 on the newly installed sunshade 102 is inserted into the connecting port on the installed sunshade 102. At the same time, the connecting grooves on the newly installed drive shaft 201 and reciprocating screw 302 are aligned and inserted with the already installed connector 401, so as to realize the connection between two adjacent drive shafts 201 and two reciprocating screws 302. The motor 304 is installed on the mounting frame 301 corresponding to the sunshade 102 located at the end, so that the connector 401 at the output end of the motor 304 is inserted into the corresponding drive shaft 201. Initially, the relative positions between the plurality of sunshade plates 102 and the mounting frame 301 are fixed, for example, the moving blocks 305 are all located at the same end of the reciprocating screw 302. During use, the motor 304 drives the drive shaft 201 connected thereto to rotate, thereby driving the multiple fan blades 202 to rotate, and the jacket 3 is cooled by air. At the same time, under the action of the sprocket chain, the drive shaft 201 drives the reciprocating screw 302 to rotate, and drives the moving block 305 and the shading plate 102 to reciprocate along the jacket 3, and shades different areas of the jacket 3; Rainwater falls into the water collecting box 501 through the water inlet hopper 502 and is collected. The rainwater in the water collecting box 501 drips slowly through the outlet pipe 503, and the rainwater falls on the surface of the sheath 3. At the same time, the fan blades 202 blow the rainwater to expand the contact area between the rainwater and the sheath 3, thereby improving the water cooling effect on the sheath 3.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high temperature resistant cable for photovoltaic power generation, comprising a conductor (1), an insulating layer (2) and a sheath (3), characterized in that: Also includes: A shading mechanism, wherein a plurality of shading mechanisms are provided and used to shade the sheath (3), the shading mechanism comprising: A mounting ring (101), the mounting ring (101) being detachably connected to the outside of the sheath (3); A light shielding plate (102), the light shielding plate (102) being mounted on the mounting ring (101); An air cooling mechanism, the air cooling mechanism is used to cool the jacket (3) by air, and the air cooling mechanism comprises: A drive shaft (201), the drive shaft (201) being rotatably disposed on the mounting ring (101); A fan blade (202), wherein the fan blade (202) is fixedly connected to the outside of the driving shaft (201).

2. The high temperature resistant cable for photovoltaic power generation according to claim 1, characterized in that: There is a gap between the two shading plates (102) in two adjacent shading mechanisms.

3. The high temperature resistant cable for photovoltaic power generation according to claim 2, characterized in that: The shading plate (102) is movably arranged on the mounting ring (101); one end of the shading plate (102) is fixedly connected to a connecting plate (4); the other end of the shading plate (102) is provided with a connecting port matching the connecting plate (4); the connecting plate (4) is detachably connected to the inside of the connecting port.

4. The high temperature resistant cable for photovoltaic power generation according to claim 3, characterized in that: It also includes a driving mechanism, the driving mechanism is used to drive the shading plate (102) to move, and the driving mechanism includes: A mounting frame (301), the mounting frame (301) being fixedly connected to the mounting ring (101), the light shielding plate (102) and the mounting frame (301) being in sliding cooperation; A reciprocating screw (302), the reciprocating screw (302) being rotatably arranged on the mounting frame (301), the light shielding plate (102) being fixedly connected to a moving block (305), the moving block (305) and the reciprocating screw (302) being threadedly connected, and the driving shaft (201) and the reciprocating screw (302) being transmission-connected.

5. The high temperature resistant cable for photovoltaic power generation according to claim 4, characterized in that: It also includes a connecting assembly, the connecting assembly is used to connect two adjacent driving shafts (201) or two adjacent reciprocating screws (302), and the connecting assembly includes: A connecting head (401), the driving shaft (201) and the reciprocating screw rod (302) are both provided with connecting grooves matching the connecting head (401), and a connecting rod (402) is fixedly connected between two adjacent connecting heads (401).

6. The high temperature resistant cable for photovoltaic power generation according to claim 5, characterized in that: It also includes a water cooling mechanism, which is used to cool the jacket (3) with water, and the water cooling mechanism includes: A water collecting tank (501), the water collecting tank (501) being fixedly connected to the sunshade (102); A water inlet hopper (502), the water inlet hopper (502) being fixedly connected to the top of the water collecting tank (501); A water outlet pipe (503), the water outlet pipe (503) is connected to the bottom of the water collecting tank (501), and the water outlet of the water outlet pipe (503) passes through the sunshade (102).

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