New energy photovoltaic intelligent power cable

Abstract

The invention belongs to the technical field of power cables, and particularly relates to a new energy photovoltaic intelligent power cable which comprises an outer protective layer, a positioning cylinder and a plurality of conductors are arranged in the outer protective layer, the positioning cylinder is arranged at the center of the outer protective layer, the conductors surround the positioning cylinder, and the conductors are arranged in the outer protective layer. A fastening mechanism is arranged between the positioning cylinder and the conductor; the fastening mechanism is used for fixing a plurality of conductors on the periphery of the positioning cylinder, a limiting plate is arranged on the positioning cylinder, and the limiting plate and the fastening mechanism are matched for fixing the conductors; a heat dissipation mechanism is further arranged between the positioning cylinder and the conductor, the heat dissipation mechanism comprises a plurality of mounting rings and heat dissipation rings, the heat dissipation rings are mounted on the mounting rings, the plurality of mounting rings are fixedly connected through ventilation pipes, heat dissipation grooves are formed in the ventilation pipes, and strip-shaped grooves are formed in the positioning cylinder; through cooperation of the structure, heat dissipation can be rapidly achieved, and good tensile property is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power cables, and more specifically, it is a new energy photovoltaic intelligent power cable. Background Art

[0002] A new energy photovoltaic intelligent power cable is a power cable with intelligent characteristics applied in the field of new energy photovoltaic power generation. It is characterized by having high efficient conductive performance, good insulation performance, intelligent detection function, and strong anti-electromagnetic interference ability. Power cables are generally divided into single-core cables and multi-core cables. A multi-core cable refers to a cable with more than one insulated conductor core, which reduces the skin effect of the cable, thereby reducing the line loss.

[0003] The specific structure of a multi-core cable includes multiple coaxially arranged inner sheaths. Cable cores are placed inside the inner sheaths, and the outside of the multiple inner sheaths is covered by a protective outer layer. In the prior art, the multiple inner sheaths are usually independently arranged, lacking a positioning structure between them. During the process of being pulled, squeezed, and twisted by external forces, the inner sheaths are prone to separating from the protective outer layer, resulting in the non-concentricity of the multiple inner sheaths, and further causing uneven electric field distribution of the cable and affecting its heat dissipation performance.

[0004] Existing cables usually use the heat dissipation materials filled inside for heat dissipation, and discharge the heat through the set heat dissipation holes. However, after long-term use, the heat dissipation holes are prone to being blocked, thus affecting the heat dissipation performance. In addition, cables erected outdoors are easily pulled by the wind due to their high positions, resulting in damage to the cable wires.

[0005] Therefore, the present invention provides a new energy photovoltaic intelligent power cable. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A new energy photovoltaic intelligent power cable described in the present invention includes an outer protective layer. Inside the outer protective layer, there are a positioning cylinder and a plurality of conductors. The positioning cylinder is arranged at the central position of the outer protective layer, and the plurality of conductors surround the positioning cylinder. A fastening mechanism is arranged between the positioning cylinder and the conductors; the fastening mechanism is used to fix the plurality of conductors around the positioning cylinder. A limiting plate is arranged on the positioning cylinder, and the limiting plate and the fastening mechanism cooperate to fix the conductors; a heat dissipation mechanism is also arranged between the positioning cylinder and the conductors. The heat dissipation mechanism includes a plurality of mounting rings and a heat dissipation ring. The heat dissipation ring is mounted on the mounting rings. The plurality of mounting rings are fixedly connected through ventilation pipes. Heat dissipation slots are opened on the ventilation pipes. Strip-shaped slots are opened on the positioning cylinder. The heat dissipation slots and the strip-shaped slots cooperate to form convection; an airbag is arranged on the inner wall of the outer protective layer. A transmission mechanism is arranged between the airbag and the ventilation pipes. The transmission mechanism is used to dredge the dirt on the heat dissipation slots.

[0008] Preferably, the fastening mechanism includes a threaded sleeve and a tapered ring. The threaded sleeve and the tapered ring are fixedly connected. The tapered ring is connected to one of the mounting rings. A plurality of gaps are opened on the tapered ring. A tapered cover is threadedly connected to the threaded sleeve. The tapered cover and the tapered ring cooperate.

[0009] Preferably, a limiting ring is slidably connected between the tapered rings. Threads matching the threaded sleeve are arranged on the inner wall of the tapered cover. The tapered part of the tapered cover corresponds to the tapered ring.

[0010] Preferably, the mounting rings are connected to the positioning cylinder. The heat dissipation rings are arranged on the front and back sides of the mounting rings. The conductors penetrate through the heat dissipation rings. Two mounting rings form a group, and the two mounting rings are located between the strip-shaped slots, that is, both ends of the strip-shaped slots are outside the two mounting rings.

[0011] Preferably, the transmission mechanism includes a positioning ring. The inside of the positioning ring is a hollow structure. The positioning ring is located in the middle of the heat dissipation slot. An air pipe is communicated between the airbag and the positioning ring.

[0012] Preferably, sliding rings are slidably connected to both ends inside the positioning ring. A first spring is connected between the two sliding rings. A connecting rod is fixedly connected to the sliding ring. The connecting rod extends outside the positioning ring and is fixedly connected to a moving block. The moving block is slidably connected to the heat dissipation slot.

[0013] Preferably, the conductor is composed of an internal cable core and a shell. The shell is composed of a flame-retardant layer, an inner shielding layer, an insulating layer, and an outer shielding layer from the inside to the outside. The cable core is wrapped inside the shell and a plurality of cable cores are arranged.

[0014] Preferably, an anti-stretching mechanism is provided between the two threaded sleeves. The anti-stretching mechanism includes a plurality of connecting plates and a moving plate. The connecting plates are connected to the mounting ring, and the plurality of connecting plates and the moving plate are connected to each other. A fixing ring is provided between the two limiting rings. The fixing ring divides the plurality of connecting plates and the moving plate into two groups. The connecting plates close to the fixing ring are slidably connected to the fixing ring.

[0015] Preferably, the connecting plate is of a hollow structure, and a second spring is arranged inside the connecting plate. The second spring is connected to the moving plate.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. For the new energy photovoltaic intelligent power cable of the present invention, through the cooperation of the positioning cylinder and the fastening mechanism, a plurality of conductors can be fixed on the positioning cylinder, preventing the conductors and other components inside the cable from being separated when the cable is stretched or dragged subsequently, and at the same time improving the concentricity of the conductors, thereby improving the electrical performance and insulation performance of the conductors.

[0018] 2. For the new energy photovoltaic intelligent power cable of the present invention, the cooperation of the heat dissipation mechanism and the positioning cylinder can not only dissipate heat, but also the plurality of mounting rings and heat dissipation rings can support and position the plurality of conductors. The heat dissipation ring directly wraps the outer surface of the conductor, and part of the heat is directly transferred to the heat dissipation ring, and the other part of the heat is dissipated to the outside of the positioning cylinder through the strip-shaped grooves on the positioning cylinder. At the same time, the ventilation pipes provided on the heat dissipation ring can also transfer the heat to other mounting rings, and the heat dissipation grooves provided on the ventilation pipes can form convection with the strip-shaped grooves opened on the positioning cylinder, thereby improving the heat dissipation efficiency.

[0019] 3. For the new energy photovoltaic intelligent power cable of the present invention, the cooperation of the transmission mechanism and the airbag can not only buffer the cable when it is squeezed and stretched through the airbag, converting the impact force into the elastic potential energy of the airbag, but also use the gas inside the airbag to drive the transmission mechanism to move, thereby scraping off the dust and dirt on the heat dissipation grooves, avoiding the blockage of the heat dissipation grooves, and further causing the heat dissipation effect to deteriorate.

[0020] 4. For the new energy photovoltaic intelligent power cable of the present invention, through the provided stretching mechanism, when the cable is pulled by wind in the air, the relative movement of the connecting plate and the moving plate stretches the second spring, thereby converting the pulling force into elastic potential energy, reducing the damage of the pulling force to the cable. At the same time, since the plurality of connecting plates and the moving plate are relatively independent and slidably connected to each other, it is easier to deform, further offsetting the pulling force, and thus protecting the conductor from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 is a schematic diagram of the external structure of the present invention;

[0023] Figure 2 is a schematic diagram of the conductor structure of the present invention;

[0024] Figure 3 is a schematic diagram of the anti - stretching mechanism in the present invention;

[0025] Figure 4 is a schematic diagram of the fastening mechanism structure in the present invention;

[0026] Figure 5 is a cross - sectional view of the fastening mechanism in the present invention;

[0027] Figure 6 is a schematic diagram of the heat - dissipation mechanism in the present invention;

[0028] Figure 7 is a schematic diagram of the cooperation between the heat - dissipation mechanism and the positioning cylinder in the present invention;

[0029] Figure 8 is a schematic diagram of the transmission mechanism in the present invention;

[0030] Figure 9 is the present invention Figure 8 magnified schematic diagram at position A;

[0031] Figure 10 is a cross - sectional view of the positioning ring in the transmission mechanism of the present invention;

[0032] Figure 11 is a schematic diagram of the anti - stretching mechanism in the present invention.

[0033] In the figure: 1. Outer protective layer; 2. Positioning cylinder; 21. Limiting plate; 22. Strip - shaped groove; 3. Conductor; 31. Outer shielding layer; 32. Insulating layer; 33. Inner shielding layer; 34. Flame - retardant layer; 4. Fastening mechanism; 41. Threaded sleeve; 42. Conical ring; 43. Gap; 44. Limiting ring; 45. Conical cover; 5. Heat - dissipation mechanism; 51. Mounting ring; 52. Heat - dissipation ring; 53. Ventilation pipe; 54. Heat - dissipation groove; 6. Transmission mechanism; 61. Positioning ring; 62. Air pipe; 63. Moving block; 64. Slip ring; 65. Connecting rod; 66. First spring; 7. Anti - stretching mechanism; 71. Connecting plate; 72. Moving plate; 73. Fixed ring; 74. Second spring; 8. Airbag. Detailed implementation manners

[0034] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0035] Embodiment 1: As Figures 1 to 6As shown in the figure, a new energy photovoltaic intelligent power cable according to an embodiment of the present invention includes an outer protective layer 1. Inside the outer protective layer 1, there are a positioning cylinder 2 and a plurality of conductors 3. The positioning cylinder 2 is arranged at the central position of the outer protective layer 1, and the plurality of conductors 3 surround the positioning cylinder 2. A fastening mechanism 4 is arranged between the positioning cylinder 2 and the conductors 3; the fastening mechanism 4 is used to fix the plurality of conductors 3 around the positioning cylinder 2. The conductor 3 is composed of an internal cable core and a shell. The shell is composed of a flame retardant layer 34, an inner shielding layer 33, an insulating layer 32, and an outer shielding layer 31 from the inside to the outside. The cable core is wrapped inside the shell and there are multiple cable cores. A limiting plate 21 is arranged on the positioning cylinder 2, and the limiting plate 21 and the fastening mechanism 4 cooperate to fix the conductor 3; the fastening mechanism 4 includes a threaded sleeve 41 and a conical ring 42. The threaded sleeve 41 and the conical ring 42 are fixedly connected. The conical ring 42 is connected to one of the mounting rings 51. A plurality of gaps 43 are provided on the conical ring 42. A conical cover 45 is threadedly connected to the threaded sleeve 41. The conical cover 45 cooperates with the conical ring 42. A limiting ring 44 is slidably connected between the conical rings 42. The inner wall of the conical cover 45 is provided with threads that cooperate with the threaded sleeve 41. The conical part of the conical cover 45 corresponds to the conical ring 42.

[0036] With the above - set technical solution, the fastening mechanism 4 fixes the plurality of conductors 3 around the positioning cylinder 2. The limiting plate 21 arranged on the positioning cylinder 2 cooperates with the fastening mechanism 4, which can fix the plurality of conductors 3 on the positioning cylinder 2, preventing the internal conductors 3 and other components from detaching when the subsequent cable is stretched or dragged. At the same time, it improves the concentricity of the conductors 3, thereby improving the electrical performance of the conductors 3. The working process of the fastening mechanism 4 is as follows: First, rotate the conical cover 45. The conical cover 45 moves on the threaded sleeve 41 until the conical part of the conical cover 45 gradually squeezes the conical ring 42, causing the conical ring 42 to deform, so that the conical ring 42 squeezes the shell of the conductor 3, and the conductor 3 and the limiting plate 21 on the positioning cylinder 2 are in contact.

[0037] As Figures 6 to 7 As shown in the figure, a heat - dissipation mechanism 5 is also arranged between the positioning cylinder 2 and the conductors 3. The heat - dissipation mechanism 5 includes a plurality of mounting rings 51 and a heat - dissipation ring 52. The heat - dissipation ring 52 is installed on the mounting ring 51. The plurality of mounting rings 51 are fixedly connected by a ventilation pipe 53. Heat - dissipation slots 54 are provided on the ventilation pipe 53. A strip - shaped slot 22 is provided on the positioning cylinder 2. The heat - dissipation slots 54 and the strip - shaped slot 22 cooperate to form a convection; the mounting ring 51 is connected to the positioning cylinder 2. The heat - dissipation ring 52 is arranged on the front and back sides of the mounting ring 51. The conductor 3 penetrates through the heat - dissipation ring 52. Two mounting rings 51 form a group, and the two mounting rings 51 are located between the strip - shaped slots 22, that is, both ends of the strip - shaped slot 22 are outside the two mounting rings 51.

[0038] The cooperation between the provided heat dissipation mechanism 5 and the positioning cylinder 2 can dissipate heat from the conductor 3 when its temperature is too high. At the same time, multiple mounting rings 51 and heat dissipation rings 52 can also support and position multiple conductors 3. The heat dissipation ring 52 is directly wrapped around the outer surface of the conductor 3. Part of the heat is directly transferred to the heat dissipation ring 52, and another part of the heat is dissipated to the outside of the positioning cylinder 2 through the strip-shaped grooves 22 on the positioning cylinder 2. At the same time, the ventilation pipes 53 provided on the heat dissipation ring 52 can also transfer the heat to other mounting rings 51, and the heat dissipation grooves 54 provided on the ventilation pipes 53 can form convection with the strip-shaped grooves 22 opened on the positioning cylinder 2, thereby increasing the heat dissipation efficiency.

[0039] Embodiment 2: As Figures 8 to 10 shown, compared with Embodiment 1, another implementation manner of the present invention is: an airbag 8 is provided on the inner wall of the outer protective layer 1, and a transmission mechanism 6 is provided between the airbag 8 and the ventilation pipe 53. The transmission mechanism 6 is used to dredge the dirt on the heat dissipation grooves 54. The transmission mechanism 6 includes a positioning ring 61. The inside of the positioning ring 61 is a hollow structure. The positioning ring 61 is located in the middle of the heat dissipation grooves 54. A trachea 62 is connected between the airbag 8 and the positioning ring 61. Two sliding rings 64 are slidably connected to both ends inside the positioning ring 61. A first spring 66 is connected between the two sliding rings 64. A connecting rod 65 is fixedly connected to the sliding ring 64. The connecting rod 65 extends to the outside of the positioning ring 61 and is fixedly connected to a moving block 63. The moving block 63 is slidably connected to the heat dissipation grooves 54.

[0040] The cooperation between the provided transmission mechanism 6 and the airbag 8 can not only buffer the cable when it is squeezed and stretched through the airbag 8, converting the impact force into the elastic potential energy of the airbag 8, but also, when the airbag 8 is squeezed, the gas inside expands. The expanded gas enters the positioning ring 61 through the trachea 62, and then squeezes the sliding ring 64 inside the positioning ring 61. The sliding ring 64 synchronously drives the connecting rod 65 and the moving block 63 to move. At the same time, the first spring 66 is stretched. As the moving block 63 slides on the heat dissipation grooves 54, the dust and dirt on the heat dissipation grooves 54 are scraped off, thus avoiding the blockage of the heat dissipation grooves 54 and further causing the deterioration of the heat dissipation effect.

[0041] As Figure 3 shown in connection with Figure 11 shown, an anti-stretching mechanism 7 is provided between the two threaded sleeves 41. The anti-stretching mechanism 7 includes multiple connecting plates 71 and a moving plate 72. The connecting plates 71 are connected to the mounting rings 51. The multiple connecting plates 71 and the moving plate 72 are connected to each other. A fixing ring 73 is provided between the two limiting rings 44. The fixing ring 73 divides the multiple connecting plates 71 and the moving plate 72 into two groups. The connecting plates 71 close to the fixing ring 73 are slidably connected to the fixing ring 73. The connecting plates 71 are hollow structures. A second spring 74 is provided inside the connecting plates 71. The second spring 74 is connected to the moving plate 72.

[0042] The provided anti-stretching mechanism 7 is composed of multiple connecting plates 71 and a moving plate 72. Since the connecting plates 71 and the moving plate 72 are slidably connected, when the cable is pulled by wind in the air, the connecting plates 71 and the moving plate 72 can move relative to each other. And the second spring 74 arranged in the connecting plate 71 converts the tensile force into elastic potential energy, thereby reducing the damage of the tensile force to the cable. At the same time, because the multiple connecting plates 71 and the moving plate 72 are relatively independent and slidably connected to each other, it is easier to deform, further offsetting the tensile force, and thus protecting the conductor 3 from being damaged.

[0043] Working principle: The provided fastening mechanism 4 and the positioning cylinder 2 can position the conductor 3 and the cable wires inside it, preventing the conductor 3 from detaching from other parts when being pulled or dragged, and at the same time improving the concentricity of multiple conductors 3, thereby improving the electrical performance and insulation performance of the cable; at the same time, the provided heat dissipation mechanism 5 not only improves the heat dissipation effect through the large-area heat dissipation ring 52 and forms convection on the positioning cylinder 2, but also can cooperate with the positioning cylinder 2 to support and position the conductor 3, thus preventing relative movement between multiple conductors 3; the provided airbag 8 and the transmission mechanism 6 can not only provide buffering when the cable is squeezed or stretched by the airbag 8, but also when the airbag 8 is squeezed, the gas inside enters the positioning ring 61 through the air pipe 62, and the gas pushes the sliding ring 64, the connecting rod 65 and the moving block 63 to move. As the moving block 63 slides, the dust and dirt in the heat dissipation groove 54 connected to it are cleaned, avoiding blockage and thus affecting the heat dissipation performance. The provided anti-stretching mechanism 7 can effectively deform through the cooperation of multiple connecting plates 71 and the moving plate 72 to convert the tensile force into elastic potential energy, thereby protecting the conductor 3 from being damaged.

[0044] The above front, back, left, right, up, and down are all based on the Figure 1 description in the accompanying drawings of the specification. Taking the observer's perspective as the standard, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left, and so on.

[0045] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy photovoltaic smart power cable, comprising an outer protective layer (1), characterized in that: A positioning cylinder (2) and a plurality of conductors (3) are arranged inside the outer protective layer (1); the positioning cylinder (2) is arranged at the center of the outer protective layer (1); the plurality of conductors (3) surround the positioning cylinder (2); and a fastening mechanism (4) is arranged between the positioning cylinder (2) and the conductors (3); The fastening mechanism (4) is used to fix a plurality of conductors (3) on the periphery of the positioning cylinder (2); a limiting plate (21) is provided on the positioning cylinder (2); the limiting plate (21) and the fastening mechanism (4) cooperate to fix the conductors (3); A heat dissipation mechanism (5) is also provided between the positioning cylinder (2) and the conductor (3), the heat dissipation mechanism (5) comprising a plurality of mounting rings (51) and heat dissipation rings (52), the heat dissipation rings (52) being mounted on the mounting rings (51), the plurality of mounting rings (51) being fixedly connected via a ventilation pipe (53), the ventilation pipe (53) being provided with a heat dissipation groove (54), the positioning cylinder (2) being provided with a strip groove (22), the heat dissipation groove (54) and the strip groove (22) being cooperated to form convection; An air bag (8) is arranged on the inner wall of the outer protective layer (1), and a transmission mechanism (6) is arranged between the air bag (8) and the ventilation pipe (53), and the transmission mechanism (6) is used to clear the dirt on the heat dissipation groove (54).

2. A new energy photovoltaic smart power cable according to claim 1, characterized in that: The fastening mechanism (4) comprises a threaded sleeve (41) and a tapered ring (42), wherein the threaded sleeve (41) and the tapered ring (42) are fixedly connected, the tapered ring (42) is connected to one of the mounting rings (51), a plurality of gaps (43) are provided on the tapered ring (42), a tapered cover (45) is threadedly connected to the threaded sleeve (41), and the tapered cover (45) and the tapered ring (42) cooperate.

3. A new energy photovoltaic smart power cable according to claim 2, characterized in that: The conical rings (42) are slidably connected with a limit ring (44), the inner wall of the conical cover (45) is provided with a thread that matches the threaded sleeve (41), and the conical part of the conical cover (45) corresponds to the conical ring (42).

4. A new energy photovoltaic smart power cable according to claim 1, characterized in that: The mounting ring (51) is connected to the positioning tube (2), the heat dissipation ring (52) is arranged on the front and rear surfaces of the mounting ring (51), the conductor (3) passes through the heat dissipation ring (52), the two mounting rings (51) form a group, and the two mounting rings (51) are located between the strip grooves (22), that is, the two ends of the strip grooves (22) are outside the two mounting rings (51).

5. The new energy photovoltaic smart power cable according to claim 1, characterized in that: The transmission mechanism (6) comprises a positioning ring (61), the interior of the positioning ring (61) is a hollow structure, the positioning ring (61) is located in the middle of the heat dissipation groove (54), and an air pipe (62) is connected between the air bag (8) and the positioning ring (61).

6. A new energy photovoltaic smart power cable according to claim 5, characterized in that: Slip rings (64) are slidably connected at both ends of the positioning ring (61), a first spring (66) is connected between the two slip rings (64), a connecting rod (65) is fixedly connected to the slip ring (64), the connecting rod (65) extends to the outside of the positioning ring (61) and is fixedly connected to a moving block (63), and the moving block (63) is slidably connected to the heat dissipation groove (54).

7. A new energy photovoltaic smart power cable according to claim 1, characterized in that: The conductor (3) is composed of an internal cable core and an outer shell, wherein the outer shell is composed of a flame retardant layer (34), an inner shielding layer (33), an insulating layer (32) and an outer shielding layer (31) from the inside to the outside, and the cable core is wrapped inside the outer shell and a plurality of cable cores are arranged.

8. The new energy photovoltaic smart power cable according to claim 3 is characterized by: An anti-stretching mechanism (7) is arranged between the two threaded sleeves (41), and the anti-stretching mechanism (7) comprises a plurality of connecting plates (71) and a movable plate (72), wherein the connecting plates (71) are connected to the mounting ring (51), and the plurality of connecting plates (71) and the movable plates (72) are connected to each other, and a fixing ring (73) is arranged between the two limiting rings (44), and the fixing ring (73) divides the plurality of connecting plates (71) and the movable plates (72) into two groups, and the connecting plates (71) and the fixing ring (73) close to the fixing ring (73) are slidably connected.

9. A new energy photovoltaic smart power cable according to claim 8, characterized in that: The connecting plate (71) is a hollow structure. A second spring (74) is arranged inside the connecting plate (71), and the second spring (74) is connected to the moving plate (72).

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