A cold-resistant and ice-resistant cable for photovoltaic power stations

Abstract

The present invention relates to the technical field of photovoltaic cables, and more specifically, to a cold-resistant and ice-resistant cable for photovoltaic power stations. The cable comprises a conductor layer, an elastic insulating layer, and a protective layer arranged from the inside out. The cable further comprises a buffer assembly, and the buffer assembly comprises a fixed part and a movable part. In the present invention, when ice particles contact the surface of the cable, the graphene coating deforms inward, so that the impact of the ice particles is transmitted through the graphene coating to the rubber membrane layer, and the rubber membrane layer then drives the movable rod to move into the insulating tube. During the movement, the rubber membrane layer itself squeezes the outer shielding layer and the inner insulating layer, causing the outer shielding layer and the inner insulating layer to undergo elastic deformation, and the movement of the movable rod drives the connecting ring to move downward, and then pulls the auxiliary elastic ropes on both sides through the connecting ring, causing the auxiliary elastic ropes to undergo elastic deformation, further eliminating the impact of the ice particles, thereby achieving force unloading treatment of the impact and avoiding damage to the cable cortex.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic cables, in particular to a cold-resistant and icing-resistant cable for photovoltaic power stations. Background Art

[0002] Photovoltaic power station cables refer to cables used in solar photovoltaic power station systems for DC side circuit power transmission. Their main function is to transmit the electricity generated by solar panels. In solar power generation systems, the performance of photovoltaic cables directly affects the efficiency and stability of the entire system.

[0003] Since photovoltaic power stations are usually located outdoors in cold areas, when rainwater contacts cables, ice droplets will form on the cable surface and gradually accumulate to form long and heavy ice strings, increasing the load on the cables. This additional gravity may cause the cables to be stretched and broken, resulting in large-scale power outages. For example, CN108231257A involves an ice and snow resistant cable. By coating the outermost layer of the cable with a hydrophobic graphene coating, the adhesion of rainwater can be reduced, thereby preventing the cable from freezing. However, rainwater itself has a certain kinetic energy when falling. In cold seasons, rainwater will contain ice particles. When rainwater and ice particles continue to impact the cable surface, the cable cortex will still be damaged. When the graphene coating is damaged, the adhesion of rainwater cannot be avoided, causing the cable to freeze. The ice cubes will pull down and cause the cable to be tightened, thereby increasing the risk of cable breakage. Summary of the Invention

[0004] The purpose of the present invention is to avoid the problem that the cable surface water removal effect is reduced due to damage to the cable graphene coating, which in turn causes condensation and ice formation on the cable surface, thereby increasing the mass and volume of the cable. When the mass of the ice exceeds the mechanical strength that the cable can withstand, it will cause the cable to be tightened and broken.

[0005] The purpose of the present invention is to provide a cold-resistant and ice-resistant cable for photovoltaic power stations. By setting a deformable cable interlayer structure, when the cable surface is subjected to force, the cable interlayer structure elastically deforms from the outside to the inside to buffer and eliminate the impact force, thereby avoiding damage to the graphene coating caused by the hard impact of rainwater and ice particles, thereby ensuring the surface water removal effect of the cable and avoiding cable breakage.

[0006] To achieve the above object, the present invention provides a cold-resistant and ice-resistant photovoltaic power station cable, comprising a conductor layer, an elastic insulation layer, and a protective layer arranged from the inside out, the cable also comprising a buffer assembly;

[0007] The buffer assembly includes a fixed part and a movable part, one end of the fixed part is fixedly connected to the conductor layer, the other end of the fixed part is located in the elastic insulation layer, one end of the movable part is connected to the protective layer, and the other end of the movable part is plugged into the other end of the fixed part, an elastic net is provided in the elastic insulation layer, and the multiple movable parts are connected by the elastic net;

[0008] When the cable surface is subjected to force, the protective layer is deformed due to the impact, thereby driving the movable part to move along the fixed part. The protective layer itself can absorb the impact by squeezing the elastic insulating layer. At the same time, the displacement of the movable part will also pull the elastic net, thereby unloading the force through the elastic deformation of the elastic net.

[0009] As a further improvement of the present technical solution, the conductor layer includes a stranded core and a plurality of conductive wire cores twisted around the stranded core, the conductive wire core being used to transmit electrical energy, and a contact surface between the stranded core and the conductive wire core being provided with a limiting groove for fixing the conductive wire core, thereby preventing the conductive wire core from moving relative to the stranded core;

[0010] One end of the fixing part is fixedly arranged on the surface of the stranded core, and a filling layer is arranged in the gap between the inner periphery of the elastic insulating layer and the stranded core and the conductor core. The purpose of providing the filling layer is to avoid shaking of the combination of the stranded core and multiple conductor cores, while keeping the cable cross-section circular or elliptical.

[0011] As a further improvement of the present technical solution, the protective layer includes a rubber membrane layer and a graphene coating disposed on the periphery of the rubber membrane layer. Using the graphene coating as the outermost layer of the cable can utilize the hydrophobicity of the graphene coating so that when rainwater drops onto the cable surface, the rainwater cannot stay on the cable surface, thereby achieving an anti-icing effect.

[0012] The movable part includes a plurality of movable rods equidistantly arranged on the inner wall of the rubber membrane layer. One end of the movable rod is plugged into the fixed part. When rainwater or ice particles contact the graphene coating, the impact force is transmitted to the rubber membrane layer through the graphene coating, and then the rubber membrane layer drives the movable rod to move along the fixed part, so that the elastic insulation layer is squeezed, and the deformation of the elastic insulation layer is used to initially absorb the impact force.

[0013] As a further improvement of the present technical solution, the fixing member includes an insulating tube arranged corresponding to the movable rod, the insulating tube being a rod structure with one end wide and the other narrow, the narrow end of the insulating tube being fixedly connected to the surface of the stranded wire core, the wide end of the insulating tube being provided with a hollow groove, one end of the movable rod passing through the elastic net and located in the hollow groove, and one end of the movable rod being plugged into and mated with the insulating tube;

[0014] The deformation of the elastic insulating layer is utilized to absorb shock, and the movable rod is plugged into the insulating tube in such a manner that the movable rod can only move vertically toward the stranded core, that is, the movable rod can only move toward or away from the stranded core and cannot move laterally relative to the stranded core.

[0015] The use of the stranded core and the connection of adjacent movable rods via an elastic net can prevent the spacing between adjacent movable rods from changing, thereby preventing the cable from being stretched and broken.

[0016] As a further improvement of the present technical solution, the elastic insulation layer includes an inner insulating layer and an outer shielding layer arranged outside the inner insulating layer, the elastic net is located inside the outer shielding layer, the inner insulating layer is provided with a plurality of first through holes, the outer shielding layer is provided with a second through hole connected to the first through hole, the wide end of the insulating tube is located in the first through hole, and one end of the movable rod passes through the second through hole;

[0017] The inner insulating layer and the outer shielding layer are both made of rubber;

[0018] A double-layer valve is provided in the first through hole, and an annular protrusion is correspondingly provided on the surface of the movable rod. The annular protrusion is stuck between the double-layer valves. When the movable rod moves toward the insulating tube, the annular protrusion of the movable rod will drive the valve to deform, and then use the elastic deformation of the valve to further absorb the impact.

[0019] As a further improvement of the present technical solution, the elastic net includes a plurality of connecting rings located in the second through hole, one end of the movable rod passes through the connecting ring, and a chuck is provided on the surface of the movable rod, the chuck is used to clamp the connecting ring, the connecting ring is connected to two main elastic ropes and four auxiliary elastic ropes, the adjacent connecting rings along the axial direction of the cable are directly connected by the provided main elastic ropes, and the connecting rings along the axial direction of the cable are cross-connected by the provided auxiliary elastic ropes;

[0020] The main elastic rope is used to maintain the spacing between adjacent movable rods, thereby preventing the cable from being stretched and broken. The secondary elastic rope is used to pull the cable through a cross setting to prevent excessive twisting of the cable, which can avoid twisting and breaking of the cable, thereby increasing the service life of the cable.

[0021] In the present invention, when subjected to an impact, the graphene coating deforms inward, so that the impact force is transmitted to the rubber membrane layer through the graphene coating. The rubber membrane layer causes the outer shielding layer and the inner insulating layer to undergo elastic deformation through compression to initially unload the force, while driving the connecting ring to move downward to pull the main elastic rope, further eliminating the impact, thereby achieving force unloading of the impact.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In this cold-resistant and ice-resistant photovoltaic power station cable, when rainwater and ice particles contact the cable surface, the graphene coating deforms inward, so that the impact of rainwater and ice particles is transmitted to the rubber membrane layer through the graphene coating. The rubber membrane layer then drives the movable rod to move into the insulating tube. During movement, the rubber membrane layer itself squeezes the outer shielding layer and the inner insulating layer, causing the outer shielding layer and the inner insulating layer to undergo elastic deformation. The movement of the movable rod drives the connecting ring to move downward, and then pulls the main elastic ropes on both sides through the connecting ring, causing the main elastic ropes to undergo elastic deformation, further eliminating the impact of rainwater and ice particles, thereby achieving force unloading of the impact, avoiding damage to the cable cortex, and improving the service life of the cable.

[0024] 2. In the cold-resistant and ice-resistant photovoltaic power station cable, the elastic net is connected to adjacent connecting rings by connecting rings through main elastic ropes and auxiliary elastic ropes, indirectly connecting adjacent movable rods. The main elastic rope is used to directly connect adjacent connecting rings, thereby maintaining the spacing between adjacent movable rods, thereby preventing the cable from being stretched and broken. The cross setting of the auxiliary elastic ropes is used to pull the cable to prevent excessive twisting of the cable, thereby avoiding twisting and breaking of the cable, thereby improving the service life of the cable.

[0025] 3. In the cold-resistant and ice-resistant photovoltaic power station cable, the movable rod and the insulating tube are plugged in and matched in such a way that the movable rod can only move vertically toward the stranded core, that is, the movable rod can only move close to or away from the stranded core, and cannot move laterally relative to the stranded core. By utilizing the stranded core and connecting adjacent movable rods through an elastic net, the spacing between adjacent movable rods can be prevented from changing, thereby preventing the cable from breaking when stretched. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A partial cross-sectional view of the cable cross-sectional structure of the present invention;

[0027] Figure 2 It is a cross-sectional view of the conductor layer structure of the present invention;

[0028] Figure 3 It is a partial structural cross-sectional view of the elastic insulating layer of the present invention;

[0029] Figure 4 A top view of the elastic net structure of the present invention;

[0030] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0031] Figure 6 This is a partial structural cross-sectional view of the protective layer of the present invention;

[0032] Figure 7 It is a cross-sectional structural diagram of the movable rod of the present invention;

[0033] Figure 8 for Figure 1 A schematic diagram of the structure at center A;

[0034] Figure 9 It is a schematic diagram of the force unloading of the buffer assembly structure of the present invention.

[0035] The meaning of each number in the figure is:

[0036] 1. Wire core; 11. Insulation tube; 12. Limiting groove; 2. Conductor core; 3. Filling layer; 4. Inner insulation layer; 41. First through hole; 411. Valve; 5. Outer shielding layer; 51. Second through hole; 52. Elastic net; 521. Connecting ring; 522. Main elastic rope; 523. Auxiliary elastic rope; 6. Rubber membrane layer; 61. Movable rod; 611. Chuck; 7. Graphene coating. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 understood as limiting the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0040] Existing ice and snow-resistant cables generally coat the outermost layer of the cable with a graphene coating, and then use the hydrophobicity of the graphene coating to remove water, which can reduce the adhesion of rainwater and thus prevent the cable from freezing. However, rainwater itself has a certain kinetic energy when falling. In cold seasons, rainwater will contain ice particles, which will still cause damage to the cable cortex under the impact of ice particles, causing damage to the graphene coating. After the graphene coating is damaged, rainwater will adhere to the cable, causing the cable to freeze and tighten, thereby increasing the risk of cable breakage.

[0041] Therefore, in order to prevent the graphene coating from being damaged by the impact of rain and ice particles, ensure the integrity of the graphene coating to prevent rain from adhering to the cable. Figure 1 As shown, the purpose of this embodiment is to provide a cold-resistant and ice-resistant photovoltaic power station cable, including a conductor layer, an elastic insulation layer and a protective layer arranged from the inside to the outside, and the cable also includes a buffer component;

[0042] The buffer assembly includes a fixed part and a movable part. One end of the fixed part is fixedly set on the conductor layer, and the other end of the fixed part is located in the elastic insulation layer. One end of the movable part is connected to the protective layer, and the other end of the movable part is located in the elastic insulation layer and plugged into the other end of the fixed part. An elastic net 52 is provided in the elastic insulation layer, and multiple movable parts are connected by the elastic net 52. When rainwater carrying ice particles drips onto the surface of the cable, the surface of the cable is subjected to force, and the protective layer is deformed due to the impact, thereby driving the movable part to move along the fixed part. The protective layer itself can absorb the impact by squeezing the elastic insulation layer. At the same time, the displacement of the movable part will also pull the elastic net 52, and then unload the force through the elastic deformation of the elastic net 52.

[0043] The above structure is disclosed below:

[0044] In order to avoid damage to the cable cortex caused by ice particle impact, first of all, it is necessary to be able to absorb the impact when ice particles contact the cable, such as Figure 1 、 Figure 2 、 Figure 6As shown, the conductor layer includes a stranded core 1 and a plurality of conductor cores 2 twisted around the stranded core 1. The conductor core 2 is used to transmit electrical energy. A limiting groove 12 for fixing the conductor core 2 is provided on the contact surface of the stranded core 1 with the conductor core 2. One end of the fixing piece is fixedly provided on the surface of the stranded core 1. A filling layer 3 is provided in the gap between the inner periphery of the elastic insulating layer and the stranded core 1 and the conductor core 2. The purpose of providing the filling layer 3 is to prevent the combination of the stranded core 1 and the plurality of conductor cores 2 from shaking, and at the same time to keep the cable cross-section circular or elliptical. In this embodiment, by spirally twisting the plurality of conductor cores 2 in the cable around the stranded core 1 as the axis, the cable can have better flexibility. In addition, by providing the limiting groove 12 to fix the conductor core 2, the conductor core 2 can be prevented from moving relative to the stranded core 1, so that the conductor core 2 is always out of contact with the fixing piece, thereby preventing the fixing piece from being broken by the conductor core 2, ensuring that the entire buffer assembly will not be damaged, and improving the service life of the cable.

[0045] In addition, the protective layer includes a rubber membrane layer 6 and a graphene coating 7 arranged on the periphery of the rubber membrane layer 6. The movable part includes a plurality of movable rods 61 equidistantly arranged on the inner wall of the rubber membrane layer 6. One end of the movable rod 61 is plugged into the fixing part. Using the graphene coating 7 as the outermost layer of the cable can utilize the hydrophobicity of graphene, so that when rainwater drops onto the surface of the cable, the rainwater cannot stay on the surface of the cable, thereby achieving an anti-icing effect. When ice particles in the rainwater contact the graphene coating 7, the impact force exerted on the graphene coating 7 is transmitted to the rubber membrane layer 6, and then the rubber membrane layer 6 drives the movable rod 61 to move along the fixing part, so that the elastic insulation layer is squeezed, and the deformation of the elastic insulation layer is used to initially absorb the impact force.

[0046] Specifically, the fixing part includes an insulating tube 11 arranged at equal intervals. The insulating tube 11 is a rod structure with one end wide and the other end narrow. The narrow end of the insulating tube 11 is fixedly connected to the surface of the wire core 1. A hollow groove is opened at the wide end of the insulating tube 11. One end of the movable rod 61 passes through the elastic net 52 and is located in the hollow groove. One end of the movable rod 61 is plugged into the insulating tube 11. The rubber membrane layer 6 can drive one end of the movable rod 61 to move in the hollow groove. The rubber membrane layer 6 itself squeezes the elastic insulation layer inward, and the deformation of the elastic insulation layer can absorb the impact. The way in which the movable rod 61 is plugged into the insulating tube 11 makes the movable rod 61 only able to produce vertical movement toward the wire core 1, that is, the movable rod 61 can only approach or move away from the wire core 1, and cannot move horizontally relative to the wire core 1. The way in which the adjacent movable rods 61 are connected on the wire core 1 and through the elastic net 52 avoids changes in the spacing between adjacent movable rods 61, thereby avoiding breakage when the cable is stretched.

[0047] The structures of the elastic insulating layer and the elastic net 52 are disclosed in detail below:

[0048] like Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 As shown, the elastic insulation layer includes an inner insulating layer 4 and an outer shielding layer 5 arranged on the periphery of the inner insulating layer 4. The inner insulating layer 4 and the outer shielding layer 5 are both made of rubber. The elastic net 52 is located in the outer shielding layer 5. The inner insulating layer 4 is provided with a plurality of first through holes 41. The outer shielding layer 5 is correspondingly provided with a plurality of second through holes 51. The second through holes 51 are connected to the first through holes 41. The wide end of the insulating tube 11 is located in the first through hole 41. One end of the movable rod 61 passes through the second through hole 51. A double-layer valve 411 is provided in the first through hole 41. The movable rod 61 is a combination rod formed by connecting three rod bodies through end-to-end threads, and the three combination rods are all three-section type. Structure, that is, metal rods with threaded surfaces at both ends, and the middle of the two metal rods are connected by rubber, wherein the surface of the combined rod located in the first through hole 41 is correspondingly provided with an annular protrusion, and the annular protrusion is stuck between the double-layer valves 411. When the movable rod 61 moves toward the insulating tube 11, the annular protrusion of the movable rod 61 will drive the valve 411 to deform, and then use the elastic deformation of the valve 411 to further absorb the impact. In addition, the three-section setting of the movable rod 61 can facilitate the bending of the cable when the cable is in the reeled state, and is also beneficial to the coordinated installation of the movable rod 61 itself and the movable rod 61 and the connecting ring 521 and other structures.

[0049] In addition, the elastic net 52 includes a plurality of connecting rings 521 located in the second through hole 51, one end of the movable rod 61 passes through the connecting ring 521, and a chuck 611 for clamping the connecting ring 521 is provided on the surface of the movable rod 61. The connecting ring 521 is connected to two main elastic ropes 522 and four auxiliary elastic ropes 523. The connecting ring 521 in the elastic net 52 is connected to the adjacent connecting ring 521 through the main elastic rope 522 and the auxiliary elastic rope 523, thereby indirectly connecting the adjacent movable rods 61.

[0050] Specifically, the connecting ring 521 is directly connected to the adjacent connecting rings 521 along the cable axis through the provided main elastic rope 522, and the connecting ring 521 is cross-connected to the adjacent connecting rings 521 along the cable axis through the provided auxiliary elastic rope 523. The elastic net 52 is connected to the movable rod 61 by providing the connecting ring 521, wherein the main elastic rope 522 is used to maintain the spacing between adjacent movable rods 61, thereby preventing the cable from being stretched and broken, and the auxiliary elastic rope 523 is used to pull the cable through the cross setting to prevent excessive twisting of the cable, which can avoid the twisting and breakage of the cable, thereby improving the service life of the cable.

[0051] In summary, when the cable is in a normal state, due to the plug-in fit between the movable rod 61 and the insulating tube 11, the movable rod 61 can only move longitudinally towards or away from the wire core 1, and cannot move laterally relative to the wire core 1, that is, the wire core 1 and the method of connecting adjacent movable rods 61 through the elastic net 52 can avoid changes in the spacing between adjacent movable rods 61. It is worth noting that by setting a limiting groove 12 to fix the conductor core 2, the conductor core 2 can be prevented from moving relative to the wire core 1, so that the conductor core 2 is always out of contact with the fixing part, thereby preventing the fixing part from being broken by the conductor core 2, ensuring that the entire buffer assembly will not be damaged, and improving the service life of the cable, thereby avoiding the cable from breaking when stretched.

[0052] When it rains in cold seasons, when rain carries ice particles and drips onto the surface of the cable, the cable surface will be impacted. When the cable surface is stressed, the protective layer will drive the movable part to move along the fixed part, absorbing the impact by squeezing the elastic insulating layer. At the same time, the movable part pulls the elastic net 52, and the elastic deformation of the elastic net 52 is used to unload the force. The specific unloading process is as follows: Figure 9 As shown, when rainwater and ice particles drip along the direction indicated by arrow a and contact the surface of the cable, the graphene coating 7 is deformed inwardly under the impact of the rainwater and ice particles, so that the impact of the ice particles can be transmitted through the graphene coating 7 to the rubber membrane layer 6, and the rubber membrane layer 6 can then drive the movable rod 61 to move, and one end of the movable rod 61 moves along the arrow b into the insulating tube 11. During the movement, the inward deformation of the graphene coating 7 will drive the rubber membrane layer 6 to squeeze the outer shielding layer 5 and the inner insulating layer 4, so that the outer shielding layer of the rubber material The shielding layer 5 and the inner insulating layer 4 undergo elastic deformation simultaneously, and the longitudinal movement of the movable rod 61 will drive the connecting ring 521 to move downward, and then pull the main elastic ropes 522 on both sides through the connecting ring 521, as shown by the arrow c, so that the main elastic ropes 522 also undergo elastic deformation, further eliminating the impact of rainwater and ice particles, thereby achieving force unloading of the impact, avoiding structural damage to the graphene coating 7 caused by the hard impact of rainwater and ice particles, thereby avoiding damage to the cable cortex and improving the service life of the cable.

[0053] The above shows and describes 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 to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A cold-resistant and ice-resistant photovoltaic power station cable, comprising a conductor layer, an elastic insulation layer, and a protective layer arranged from the inside out, characterized in that: The cable also includes a buffer assembly; The buffer assembly includes a fixed part and a movable part, one end of the fixed part is fixedly connected to the conductor layer, the other end of the fixed part is located in the elastic insulation layer, one end of the movable part is connected to the protective layer, and the other end of the movable part is plugged into the other end of the fixed part, an elastic net (52) is provided in the elastic insulation layer, and a plurality of movable parts are connected through the elastic net (52), when the surface of the cable is subjected to force, the protective layer drives the movable part to move, and the movable part drives the elastic net (52) to generate elastic deformation; The conductor layer comprises a stranded core (1) and a plurality of conductor cores (2) twisted around the stranded core (1), the conductor core (2) being used to transmit electrical energy, a limiting groove (12) for fixing the conductor core (2) being provided on the contact surface between the stranded core (1) and the conductor core (2), one end of the fixing member being fixedly provided on the surface of the stranded core (1), and a filling layer (3) being provided in the gap between the inner periphery of the elastic insulating layer and the stranded core (1) and the conductor core (2); The protective layer comprises a rubber membrane layer (6) and a graphene coating (7) arranged on the periphery of the rubber membrane layer (6); the movable part comprises a plurality of movable rods (61) equidistantly arranged on the inner wall of the rubber membrane layer (6); one end of the movable rod (61) is plugged into and fitted with the fixing part; The fixing member includes an insulating tube (11) arranged corresponding to the movable rod (61), the insulating tube (11) is a rod structure with one end wide and the other end narrow, the narrow end of the insulating tube (11) is fixedly connected to the surface of the stranded wire core (1), the wide end of the insulating tube (11) is provided with a hollow groove, one end of the movable rod (61) passes through the elastic net (52) and is located in the hollow groove, and one end of the movable rod (61) is plugged into and matched with the insulating tube (11).

2. The cold-resistant and icing-resistant photovoltaic power station cable according to claim 1, characterized in that: The elastic insulating layer comprises an inner insulating layer (4) and an outer shielding layer (5) arranged on the periphery of the inner insulating layer (4); the elastic net (52) is located in the outer shielding layer (5); the inner insulating layer (4) is provided with a plurality of first through holes (41); the outer shielding layer (5) is provided with second through holes (51) connected to the first through holes (41); the wide end of the insulating tube (11) is located in the first through hole (41); and one end of the movable rod (61) passes through the second through hole (51).

3. The cold-resistant and icing-resistant photovoltaic power station cable according to claim 2, characterized in that: The inner insulating layer (4) and the outer shielding layer (5) are both made of rubber.

4. The cold-resistant and icing-resistant photovoltaic power station cable according to claim 3, characterized in that: A double-layer valve (411) is provided in the first through hole (41), and a corresponding annular protrusion is provided on the surface of the movable rod (61), and the annular protrusion is clamped between the double-layer valve (411).

5. The cold-resistant and icing-resistant photovoltaic power station cable according to claim 4, characterized in that: The elastic net (52) comprises a plurality of connecting rings (521) located in the second through hole (51); one end of the movable rod (61) passes through the connecting ring (521); and a chuck (611) is provided on the surface of the movable rod (61); the chuck (611) is used to clamp the connecting ring (521); the connecting ring (521) is connected with two main elastic ropes (522) and four auxiliary elastic ropes (523); adjacent connecting rings (521) along the axial direction of the cable are directly connected by the provided main elastic ropes (522); and the connecting rings (521) along the axial direction of the cable are cross-connected by the provided auxiliary elastic ropes (523).

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