A solar photovoltaic power cable that facilitates heat dissipation

Abstract

The utility model belongs to new energy power generation cable technical field especially relates to a solar photovoltaic power generation cable that is helpful to heat dissipation, including mounting panel, be equipped with cable accommodating groove on mounting panel, cable body is embedded in cable accommodating groove, the groove wall of cable accommodating groove is covered with heat conduction sheet, the heat dissipation fin that the heat conduction sheet outwardly extends continues to extend the column body outwardly after passing mounting panel, the threaded rod that extends on the board surface of cable accommodating groove on mounting panel, the limit strip and the compression rod sleeve are equipped on the threaded rod, be equipped with spring between the limit strip and the compression rod, and the compression rod compresses spring to be thus through the limit strip and is elastically compressed in cable accommodating groove with cable body, the rainwater collection box is equipped above heat dissipation fin, is equipped with the shunt groove under rainwater collection box, and the shunt groove bottom is correspondingly provided with the water seepage hole that sets up with heat dissipation fin.

Description

Technical Field

[0001] This utility model belongs to the field of new energy power generation cable technology, and specifically relates to a solar photovoltaic power generation cable that helps dissipate heat. Background Technology

[0002] Solar photovoltaic (PV) power generation is the process of converting solar radiation energy into electrical energy through the photovoltaic effect of semiconductor materials. To reduce the risk of damage to solar panels from humans or animals, they are often fixed to a certain height above the ground using pillars. These pillars are typically hollow, allowing power cables to be routed within them, thus minimizing environmental corrosion. However, the transmission of current through the metal conductors inside the cables continuously generates heat. The relatively small, enclosed space of the pillar hinders airflow and heat dissipation. When the heat on the cables becomes excessive and cannot dissipate quickly enough, it not only affects the cable's lifespan but also increases the risk of the cables catching fire. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a solar photovoltaic power generation cable that helps dissipate heat, including a vertical mounting plate. On one side of the mounting plate, there are several cable receiving grooves arranged horizontally at intervals with vertical axial direction. The cable receiving grooves are formed by a partial horizontal inward indentation on the mounting plate. Both ends of the cable receiving grooves are open. The mounting plate has mounting holes that are vertically connected to the two sides of the mounting plate in the axial direction at a distance away from the cable receiving grooves. Through the mounting holes, the mounting plate can be detachably installed on the inner wall of the column. Each cable receiving groove is covered with a heat-conducting plate. The heat dissipation fins on the heat-conducting plate extend radially outward along the cable receiving groove to pass through the mounting plate from the bottom of the cable receiving groove and continue to extend outward out of the column.

[0004] The cable bodies are fitted into the cable receiving grooves in parallel, corresponding to each other. Several fastening mechanisms are arranged vertically at intervals on the mounting plate. Each fastening mechanism includes a threaded rod extending outwards from the cable receiving groove on the mounting plate surface, perpendicular to the mounting plate surface in its length direction. A horizontally positioned limiting strip, parallel to the mounting plate surface, is provided on the side of the cable body away from the mounting plate. The limiting strip is fitted onto the threaded rod, and a limiting groove is formed on the side of the limiting strip away from the cable body, with its axial direction perpendicular to the length direction of the limiting strip. A clamping rod, parallel in length to the limiting strip, is provided on the side away from the cable body. The clamping rod is also fitted onto the threaded rod. A spring, axially aligned with the limiting groove, is provided between the limiting strip and the clamping rod. One end of the spring is fixed to the clamping rod, and the other end is coaxially fitted into the limiting groove. The clamping rod slides along the length of the threaded rod to achieve axial compression of the spring. This further ensures that each cable body is always elastically clamped into its respective cable receiving groove by the limiting strip. The clamping rod is then locked in its current position by a limiting nut that is screwed onto the threaded rod.

[0005] On the outer wall of the column, above each heat dissipation fin, there is a rainwater collection box with an open top. The top opening of the rainwater collection box is equipped with a horizontal filter screen. The filter screen is vertically upward and there is a gap between it and the top opening of the rainwater collection box. A water outlet pipe extends vertically downward from the bottom of the rainwater collection box, and a solenoid valve is installed on the water outlet pipe. Below the rainwater collection box, there is a diversion channel with a vertical opening facing upward. The rainwater collection box vertically downward exactly covers the opening of the diversion channel. The diversion channel is vertically downward and close to or even abuts against the horizontal top edge of each heat dissipation fin. The bottom of the diversion channel has vertical seepage holes that correspond to the heat dissipation fins and connect the diversion channel cavity to the outside. The seepage holes are vertically downward along their own horizontal length and are vertically aligned with the top edge of the corresponding heat dissipation fin. The width of the seepage hole is 1.1 to 1.3 times the thickness of the corresponding heat dissipation fin. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure on the inner wall of the column when the heat-dissipating solar photovoltaic power generation cable of this utility model is assembled on the column.

[0007] Figure 2 For the appendix Figure 1 Front sectional view (cable body omitted);

[0008] Figure 3 For the appendix Figure 1 The exploded view shows the heat-conducting plates and their heat dissipation fins being assembled one-to-one in the cable receiving groove.

[0009] Figure 4 For the appendix Figure 1The diagram shows an enlarged view of the structure in which the cable body is always elastically pressed and fitted into the cable receiving groove by a fastening mechanism.

[0010] Figure 5 This is a structural diagram on the outer wall of the column when the heat dissipation-aiding solar photovoltaic power generation cable of this utility model is assembled on the column (the two box plates of the rainwater collection box and the diversion channel are omitted to better show the internal structure of the rainwater collection box).

[0011] Figure 6 For the appendix Figure 5 The diagram shows the relative positional relationship between the bottom seepage hole of the diversion channel and the top edge of the heat dissipation fins.

[0012] Among them, 1—mounting plate, 11—cable receiving groove, 111—strip-shaped perforation opened at the bottom of the cable receiving groove for heat dissipation fins to fit through the mounting plate, 2—heat conducting plate, 21—heat dissipation fin, 3—cable body, 4—threaded rod, 5—limiting strip, 51—limiting groove, 6—clamping rod, 7—spring, 8—limiting nut, 9—rainwater collection box, 91—water outlet pipe, 92—filter screen, 93—solenoid valve, 10—diversion groove, 101—water seepage hole, 12—column, 13—bolt. Detailed Implementation

[0013] It should be noted that the terms "left," "right," "front," "back," "horizontal," and "vertical" used in the description of this application refer to the appendix. Figure 1 , 2 In 4, 5, and 6, "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0014] As shown in the attached diagram, the heat-dissipating solar photovoltaic power generation cable of this utility model first includes a vertical mounting plate 1. On the vertical right side of the mounting plate 1 (i.e., the side facing the inner cavity of the column 12), there are several evenly spaced, horizontally arranged cable receiving grooves 11, each with a vertical axial direction. The cable receiving grooves 11 are formed by a partial horizontal inward (leftward) recess on the vertical right side of the mounting plate 1. Both ends of the cable receiving grooves 11 are open. Mounting holes are respectively opened on the front and rear sides of the area where the cable receiving grooves 11 are distributed, with a horizontal axial direction connecting the left and right sides of the mounting plate 1. Bolts 13, coaxially fitted into the mounting holes, are further coaxially threaded into threaded holes on the inner wall of the column 12 (as shown in the attached diagram). Figure 4This allows for the detachable installation of the mounting plate 1 onto the vertical inner wall of the column 12. Each cable receiving groove 11 has a heat-conducting plate 2 (the heat-conducting plate 2 is an arc-shaped copper sheet structurally matched to the cable receiving groove 11, surface-to-surface bonded and fixed to the groove wall of the cable receiving groove 11) extending radially outward (horizontally to the left) from the bottom of the cable receiving groove 11 along its own width direction, passing horizontally to the left through the mounting plate 1 (as shown in the attached figure). Figure 3 ), continue to extend outward and horizontally to the left to pass through the column 12 and extend outside the column 12. The heat dissipation fin 21 is a strip of copper that is parallel (both are vertical) to the heat conduction plate 2 in the length direction, and is integrally formed with the heat conduction plate 2.

[0015] Multiple cable bodies 3 extending downwards from the inner cavity of the column 12 are correspondingly and parallelly embedded in the cable receiving groove 11. To ensure more stable contact and abutment between the cable body 3 and the heat-conducting plate 2 in the cable receiving groove 11, several fastening mechanisms are arranged sequentially and evenly along the vertical direction on the mounting plate 1 (the vertical distance between adjacent fastening mechanisms is about 1.5 meters). Each fastening mechanism includes threaded rods 4 extending horizontally to the right on the right side of the mounting plate 1 where the cable receiving groove 11 is located, with their length direction perpendicular to the surface of the mounting plate 1. These two threaded rods 4 are parallel to each other in length direction and located at the same horizontal height. The fastening mechanism also includes a fastening mechanism located on the right side of the cable body 3. A limiting strip 5, horizontally extending forward and backward along its length, is fitted onto both threaded rods 4. The limiting strip 5 has a horizontally recessed rightward indentation corresponding to the cable receiving groove 11, forming a contact portion that engages with the cable body 1. A limiting groove 51, horizontally recessed inward (to the left) along the side of the limiting strip 5 away from the cable body 3, is formed, with its axial direction perpendicular to the length direction of the limiting strip 5. The limiting groove 51 is located at the center of the length direction of the limiting strip 5. A clamping rod 6, horizontally extending forward and backward along its length, is fitted onto both threaded rods 4 on the right side of the limiting strip 5. A spring 7, horizontally extending left and right along its axial direction, is located between the limiting strip 5 and the clamping rod 6. One end of the spring 7 is welded and fixed to the center of the length direction of the clamping rod 6, and the other end is coaxially fitted into the limiting groove 51. The clamping rod 6 slides horizontally to the left along the length of the threaded rod 4 to achieve axial compression of the spring 7. This, in turn, uses the spring 7 and the limiting strip 5 to elastically press each cable body 3 into its respective cable receiving groove 11. The limiting nuts 8, threaded onto each threaded rod 4, collectively lock the clamping rod 6 into its current position on the threaded rod 4. (See attached diagram.) Figure 4 ;

[0016] Above each heat dissipation fin 21, a rainwater collection box 9 with an open top is provided. The rainwater collection box 9 is screwed into a threaded hole on the vertical outer wall of the column 12 by a bolt 13 with a horizontal axial direction, so that it can be detachably installed on the outer wall of the column 12. A filter screen 92 with a horizontal mesh surface is provided in the inner cavity of the rainwater collection box 9. The filter screen 92 is vertically and circumferentially supported at a certain distance from the top opening of the rainwater collection box 9 (as shown in the attached figure). Figure 5 The rainwater collection tank 9 has a vertically downward-extending outlet pipe 91 at its bottom. An electromagnetic valve 93 (as shown in the attached image) is installed on the outlet pipe 91 to control the downward flow of water. Figure 2 Below the rainwater collection box 9 is a vertically upward-facing diversion channel 10. The rainwater collection box 9 vertically downwards precisely covers the opening of the diversion channel 10 (the rainwater collection box 9 and the diversion channel 10 are integrally formed, so the diversion channel 10 is also installed on the outer wall of the column 12 through the rainwater collection box 9). The diversion channel 10 is vertically downwards in its installation position, close to or just abutting against the horizontal top edge of each heat dissipation fin 21. The bottom of the diversion channel 10 and the heat dissipation fin 21 are respectively provided with vertically opening seepage holes 101 that connect the cavity of the diversion channel 10 to the outside. The seepage holes 101 are vertically downwards in their own length direction (horizontal in the left and right direction) and are vertically aligned with the top edge of the corresponding heat dissipation fin 21. The front-to-back width of the seepage hole 101 is 1.1 times the thickness of the corresponding heat dissipation fin 21. (See attached...) Figure 6 .

[0017] Based on the above structural design, the heat generated on the cable body 3 due to the transmission of current can be transferred to the corresponding heat dissipation fins 21 through the heat-conducting plate 2 in surface contact with it. This not only increases the heat dissipation area, but also, since the heat dissipation fins 21 extend to the outside of the column 12, the natural wind blowing over the heat dissipation fins 21 outside the column 12 helps to better remove heat and improve heat dissipation efficiency.

[0018] A rainwater collection box 9 is installed above the heat dissipation fins 21 to collect rainwater that falls into it during rainfall. Normally, the solenoid valve 93 is in a closed state. When further cooling of the cable body 3 is required, the wirelessly controlled solenoid valve 93 opens, allowing the collected rainwater to flow downwards into the diversion channel 10. After being diverted through the seepage holes 101, the water adheres to the surface of each heat dissipation fin 21 and flows downwards. During this downward flow, the water gradually evaporates, dries, and absorbs heat, which helps to further cool the heat dissipation fins 21. This, in turn, facilitates the transfer of heat from the cable body 3 to the external heat dissipation fins 21, improving the cooling effect of the cable body 3 and enhancing safety.

[0019] In addition, this solution uses rainwater as a water source for spraying water on the heat dissipation fins 21 to cool them down, which is in line with the energy-saving concept of turning waste into treasure.

[0020] A filter screen 92 is installed inside the rainwater collection tank 9 to prevent external sand and dust particles from falling into the rainwater collection tank 9 and further entering the water outlet pipe 91 and the seepage hole 101, which would cause blockage.

[0021] Furthermore, by placing the filter screen 92 at a certain distance below the top opening of the rainwater collection box 9, rather than directly at the top opening of the rainwater collection box 9, a transitional receiving cavity can be formed above the filter screen 92 in the rainwater collection box 9. During summer thunderstorms, when the rain is short-lived but heavy, this transitional receiving cavity can collect enough rainwater in a short time. This rainwater then slowly passes through the filter screen 92 for filtration and seepage. Therefore, this design can increase the amount of rainwater collected in a short time, especially when a certain amount of sand and dust particles accumulate on the upper surface of the filter screen 92, causing blockage and reducing the water flow capacity. In contrast, if the filter screen 92 is directly installed at the top opening of the rainwater collection box 9, a lot of rainwater will be blocked by the filter screen 92 and will not be able to enter the rainwater collection box 9 in time before it is lost outside the box. When the rain stops after a short period of time, the box often does not collect much rainwater.

[0022] In addition, the seepage hole 101 at the bottom of the diversion channel 10 is designed as a strip-shaped slit, and is parallel to or close to the top edge of the corresponding heat dissipation fin 21 in the length direction. The width of the seepage hole 101 is only slightly larger than the thickness of the corresponding heat dissipation fin 21 (the part that is wider than the thickness of the heat dissipation fin 21 is the actual outlet for rainwater to flow downward in the diversion channel 10). This is beneficial for the rainwater flowing downward from the seepage hole 101 to basically adhere to the surface of the heat dissipation fin 21 and flow downward, which improves the contact degree between the rainwater and the heat dissipation fin 21, improves the utilization rate of rainwater, and greatly avoids the rainwater from overflowing downward from the seepage hole 101 and falling directly to the ground without contacting the heat dissipation fin 21.

[0023] Meanwhile, through the elastic compression of the spring 7, the cable body 3 can always be horizontally pressed and fitted into the cable receiving groove 11 and maintain sufficient and effective contact with the heat-conducting plate 2 in the cable receiving groove 11, thereby promoting the heat generated on the cable body 3 to be conducted away more promptly through the heat-conducting plate 2; one end of the spring 7 is welded and fixed to the clamping rod 6 in the length direction, while the other end is only coaxially assembled into the limiting groove 51 during installation, and is normally separated from the limiting strip 5. This is equivalent to relieving the connection burden of one end of the spring 7 (i.e., the limiting strip 5), which not only allows the spring 7 to maintain its natural state when placed at will, but also avoids unnecessary elastic deformation of the spring 7 when the clamping rod 6 (or the limiting strip 5) is removed, thus affecting its service life.

Claims

1. A solar photovoltaic power cable that facilitates heat dissipation, characterized by: The cable includes a mounting plate (1) with a vertical surface. On one of the mounting plates (1), there are several cable receiving grooves (11) with a vertical axis arranged horizontally at intervals. Each of the cable receiving grooves (11) is covered with a heat-conducting plate (2). The heat dissipation fins (21) extending outward on the heat-conducting plate (2) pass through the mounting plate (1) and continue to extend outward into a column. The cable bodies (3) are fitted into the cable receiving grooves (11) in parallel with each other, and the mounting plate (1) is provided with a number of fastening mechanisms at intervals along the vertical direction. Each fastening mechanism includes a threaded rod (4) extending outward from the plate surface of the mounting plate (1) where the cable receiving groove (11) is located, a limiting strip (5) fitted on the threaded rod (4), and a clamping rod (6) fitted on the threaded rod (4) on the side of the limiting strip (5) away from the cable body (3). A spring (7) is provided between the limiting strip (5) and the pressing rod (6). The pressing rod (6) slides along the length of the threaded rod (4) to achieve axial compression of the spring (7), thereby further pressing each cable body (3) into the cable receiving groove (11) where it is located by the limiting strip (5). The pressing rod (6) is locked in the current position by the limiting nut (8) screwed on the threaded rod (4). A rainwater collection box (9) with an open top is provided above each of the heat dissipation fins (21). A water outlet pipe (91) extends downward from the rainwater collection box (9). A diversion channel (10) with a vertical opening is provided below the rainwater collection box (9). A seepage hole (101) is provided at the bottom of the diversion channel (10) corresponding to the heat dissipation fins (21) to connect the cavity of the diversion channel (10) with the outside.

2. The solar photovoltaic power cable that facilitates heat dissipation of claim 1, wherein: In the same fastening mechanism, a threaded rod (4) is provided on both sides of the area where the cable receiving groove (11) is located on the mounting plate (1), and the two threaded rods (4) are located at the same horizontal height and are parallel to each other in the length direction. The limiting strip (5) and the clamping rod (6) are simultaneously fitted on the two threaded rods (4).

3. The solar photovoltaic power cable with heat dissipation facilitated according to claim 2, characterized in that: On the side of the limiting strip (5) that is perpendicular to the threaded rod (4) in the length direction, away from the cable body (3), a limiting groove (51) is formed by horizontal inward indentation and is perpendicular to the length direction of the limiting strip (5). One end of the spring (7) is fixed to the clamping rod (6) in the axial direction, and the other end is coaxially engaged with the limiting groove (51).

4. The solar photovoltaic power cable that facilitates heat dissipation of claim 1, wherein: The rainwater collection box (9) has a filter screen (92) with a horizontal mesh surface at the top opening. The filter screen (92) is vertically upward and has a gap from the top opening of the rainwater collection box (9).

5. The solar photovoltaic power cable with heat dissipation facilitated according to claim 1, characterized in that: The rainwater collection box (9) is vertically downward and just covers the opening of the diversion channel (10).

6. The solar photovoltaic power cable that facilitates heat dissipation of claim 1, wherein: The diversion groove (10) is vertically downward and close to the horizontal top edge of each heat dissipation fin (21), and the water seepage hole (101) is vertically downward in its own horizontal length direction and is vertically parallel and aligned with the top edge of the corresponding heat dissipation fin (21).

7. The solar photovoltaic power cable facilitated for heat dissipation as claimed in claim 6 wherein: The width of the drainage hole (101) is 1.1 to 1.3 times the thickness of the corresponding heat dissipation fin (21).

8. The solar photovoltaic power cable that facilitates heat dissipation of claim 1, wherein: A solenoid valve (93) is installed on the water outlet pipe (91).

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