Flame-retardant weather-resistant photovoltaic cable

Abstract

The utility model relates to the technical field of photovoltaic cables, and discloses a flame-retardant and weather-resistant photovoltaic cable, which comprises a cable core, an insulating layer is fixedly connected to the outer wall of the cable core, a reinforcing layer is connected to the insulating layer through an improvement assembly, a wear-resistant layer is fixedly connected to the outer wall of the reinforcing layer, and the wear-resistant layer is fixedly connected to the outer wall of the cable core. Square grooves are formed in the middles of the two sides of the outer wall of the wear-resistant layer, clamping strips are clamped in the square grooves in the two sides, the improvement assembly comprises lower hemispheres which are fixedly connected to the outer wall of the insulating layer, and every four lower hemispheres are arranged in a group. According to the utility model, when the photovoltaic cable is subjected to external high-temperature radiation, the flame-retardant effect of the cable can be effectively improved, the glass fiber layer has good insulation, heat-resistant and fireproof performance, the protection of the wire cores is further enhanced, and when the photovoltaic cable is blown by strong wind, wind current can be dispersed to prevent the wind current from directly acting on the photovoltaic cable, so that the service life of the photovoltaic cable is prolonged. And the chlorinated polyethylene strips have relatively strong weather resistance, so that the service life of the cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cables, in particular to a flame-retardant and weather-resistant photovoltaic cable. Background Art

[0002] Photovoltaic cables refer to cables used to connect photovoltaic modules and to connect photovoltaic modules with inverters, string boxes and other equipment. Photovoltaic cables play an important role in photovoltaic power generation systems. The correct selection and installation of photovoltaic cables are crucial to the performance, safety and reliability of photovoltaic systems.

[0003] After searching, a distributed photovoltaic cable with announcement number CN219553284U includes a wear-resistant outer layer, and a protective component is fixedly connected to the inner side of the wear-resistant outer layer; the protective component includes a fiber layer, and a plurality of elastic spheres are bonded to the surface of the fiber layer away from the wear-resistant outer layer, and the protective layer is attached to the side of the elastic sphere away from the fiber layer, and a plurality of telescopic rods are fixedly connected to the side of the protective layer away from the elastic sphere, and springs are sleeved on the outside of the telescopic rods, and a clamp is fixedly connected to the side of the telescopic rods away from the protective layer. This distributed photovoltaic cable transmits the pressure generated by the outside from the fiber layer to the elastic spheres through the wear-resistant outer layer, and then the elastic spheres absorb part of the pressure by their own extrusion and deformation, while the other part of the pressure can be further relieved by the compression and deformation of the telescopic rods and springs, thereby reducing the impact of the pressure on the photovoltaic cable body and improving the protective performance of the surface of the photovoltaic cable body;

[0004] However, the photovoltaic cable adopts the above-mentioned telescopic rod and spring setting, which requires more steps to produce and install the cable, which is more troublesome. In addition, when used outdoors, it is affected by different climates or external factors, such as high temperature radiation, strong winds, etc., and ordinary cables have poor high temperature resistance, which greatly reduces the service life of the cable. In this regard, to address this technical problem, the present application proposes a flame retardant and weather-resistant photovoltaic cable. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a flame retardant and weather-resistant photovoltaic cable that can be easily produced and can improve external high-temperature radiation and mitigate the impact of strong winds on the wire core. When the cable spontaneously combusts, the source of the cable can be more effectively blocked, thereby extending the service life of the photovoltaic cable.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A flame-retardant and weather-resistant photovoltaic cable comprises a cable core, the outer wall of the cable core is fixedly connected with an insulating layer, the insulating layer is connected with a reinforcing layer through an improved component, the outer wall of the reinforcing layer is fixedly connected with a wear-resistant layer, square grooves are provided in the middle of both sides of the outer wall of the wear-resistant layer, and the inside of the square grooves on both sides are clamped with clamping strips.

[0008] Furthermore, the improved component includes a lower hemisphere fixedly connected to the outer wall of the insulating layer, the lower hemispheres are arranged in a group of four, a plurality of rubber arc pieces are evenly fixedly connected around the outer wall of the insulating layer, and a plurality of upper hemispheres are evenly fixedly connected to the top of the inner wall of the rubber arc piece from front to back.

[0009] Furthermore, the bottom of the upper hemisphere is respectively opposite to the center of the intersection of each group of the lower hemispheres, and both the upper hemisphere and the lower hemisphere are made of rubber.

[0010] Furthermore, a plurality of chlorinated polyethylene strips are evenly and fixedly connected between two of the rubber arc sheets around the outer wall of the insulating layer.

[0011] Furthermore, a plurality of guide strips are fixedly connected to the upper and lower sides of the clamping strips on both sides, and the inner walls of the guide strips on both sides are tightly attached to the outer wall of the wear-resistant layer.

[0012] Furthermore, a fire-resistant mica layer barrier is bonded to the outer wall of the rubber arc sheet, and a plurality of partition layers are arranged around the outer wall of the fire-resistant mica layer barrier.

[0013] Furthermore, a fireproof layer is provided between each of the partitions, the fireproof layer is a glass fiber mesh layer, and the side of the partition away from the fire-resistant mica layer is fixedly connected to the inner wall of the reinforcement layer.

[0014] The utility model has the following beneficial effects:

[0015] In the utility model, by arranging the rubber arc piece, the upper hemisphere, the lower hemisphere, the chlorinated polyethylene strip, by arranging the interlayer, the fireproof layer, and the fire-resistant mica layer, the flame retardant effect of the photovoltaic cable can be effectively improved when the photovoltaic cable is subjected to external high-temperature radiation. The material of the glass fiber layer has good insulation, heat resistance and fireproof properties, and further strengthens the protection of the wire core. The arrangement of the square groove, the card strip, and the guide plate strip can disperse the wind flow when facing strong winds to prevent the wind flow from directly acting on the photovoltaic cable and causing damage to the photovoltaic cable. The chlorinated polyethylene strip has strong weather resistance and greatly prolongs the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of a flame-retardant and weather-resistant photovoltaic cable proposed by the utility model;

[0017] Figure 2 This is a front view schematic diagram of a flame retardant and weather resistant photovoltaic cable proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the partial structural disassembly of a flame-retardant and weather-resistant photovoltaic cable proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of a cable core of a flame-retardant and weather-resistant photovoltaic cable proposed in the utility model;

[0020] Figure 5 This is a schematic diagram of a rubber arc sheet of a flame-retardant and weather-resistant photovoltaic cable proposed by the utility model.

[0021] Legend:

[0022] 1. Cable core; 2. Insulation layer; 3. Rubber arc sheet; 4. Upper hemisphere; 5. Lower hemisphere; 6. Chlorinated polyethylene strip; 7. Interlayer; 8. Fireproof layer; 9. Reinforcement layer; 10. Wear-resistant layer; 11. Square groove; 12. Snap-in strip; 13. Guide plate strip; 14. Fire-resistant mica layer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-5 The utility model provides an embodiment: a flame-retardant and weather-resistant photovoltaic cable, comprising a cable core 1, an insulating layer 2 is fixedly connected to the outer wall of the cable core 1, a wear-resistant layer 10 is fixedly connected to the outer wall of the reinforcing layer 9, square grooves 11 are provided in the middle of both sides of the outer wall of the wear-resistant layer 10, and the inner parts of the square grooves 11 on both sides are clamped with clamping strips 12, a lower hemisphere 5 is fixedly connected to the outer wall of the insulating layer 2, and the lower hemispheres 5 are arranged in groups of four, a plurality of rubber arc sheets 3 are evenly fixedly connected to the outer wall of the insulating layer 2, and a plurality of upper hemispheres 4 are evenly fixedly connected to the top of the inner wall of the rubber arc sheet 3 from front to back;

[0025] Specifically, the provision of the reinforcing layer 9 and the wear-resistant layer 10 can enhance the overall strength of the photovoltaic cable. The rubber arc sheet 3 plays a preliminary buffering role for the photovoltaic cable. The upper hemisphere 4 and the lower hemisphere 5 are arranged between the insulating layer 2 and the rubber arc sheet 3 in a 1:4 manner, thereby further protecting the photovoltaic cable.

[0026] Further explanation, the bottom of the upper hemisphere 4 is respectively opposite to the center of the intersection of each group of lower hemispheres 5, the upper hemisphere 4 and the lower hemisphere 5 are both made of rubber, a plurality of chlorinated polyethylene strips 6 are evenly and fixedly connected between the two rubber arc pieces 3 on the outer wall of the insulating layer 2, and a plurality of guide strips 13 are fixedly connected on the upper and lower sides of the clamping strip 12, and the inner walls of the guide strips 13 on both sides are closely attached to the outer wall of the wear-resistant layer 10;

[0027] Specifically, the bottom of the upper hemisphere 4 is respectively opposite to the center of the intersection of each group of lower hemispheres 5, so that they can be squeezed and matched. The rubber material setting of the upper hemisphere 4 and the lower hemisphere 5 can better squeeze and resist each other. The chlorinated polyethylene strip 6 has strong weather resistance, which greatly extends the service life of the cable. The guide strip 13 is installed on the outer wall of the wear-resistant layer 10 through the clamping strip 12, so that the wind source can be better diverted to avoid direct action on the photovoltaic cable.

[0028] Further explanation, the outer wall of the rubber arc piece 3 is bonded with a fire-resistant mica layer barrier 14, and a plurality of partitions 7 are arranged around the outer wall of the fire-resistant mica layer barrier 14, and a fireproof layer 8 is arranged between each of the partitions 7, and the fireproof layer 8 is a glass fiber mesh layer, and the side of the partition 7 away from the fire-resistant mica layer barrier 14 is fixedly connected to the inner wall of the reinforcement layer 9;

[0029] Specifically, the fire-resistant mica layer 14 has excellent fire resistance and insulation properties, thereby providing good flame retardant protection for the photovoltaic cable. The material of the glass fiber layer has good insulation, heat resistance and fire prevention properties, further strengthening the protection of the cable core 1.

[0030] Working principle: First, the rubber arc sheet 3 plays a preliminary role in resisting and buffering the photovoltaic cable. The upper hemisphere 4 and the lower hemisphere 5 are arranged between the insulating layer 2 and the rubber arc sheet 3 in a 1:4 manner, so as to further protect the photovoltaic cable. The bottom of the upper hemisphere 4 is respectively opposite to the center of the intersection of each group of lower hemispheres 5, so that they can be squeezed and matched. The rubber material setting of the upper hemisphere 4 and the lower hemisphere 5 can better extrude and resist each other. The chlorinated polyethylene strip 6 has strong weather resistance and greatly extends the service life of the cable. The guide strip 13 is installed on the outer wall of the wear-resistant layer 10 through the clamping strip 12, so that the wind source can be better diverted to avoid direct action on the photovoltaic cable. The fire-resistant mica layer resistance 14 has excellent fire resistance and insulation performance, and thus provides good flame retardant protection for the photovoltaic cable. The material of the glass fiber layer has good insulation, heat resistance and fire resistance, etc., which further strengthens the protection of the cable core 1. The setting of the reinforcement layer 9 and the wear-resistant layer 10 can improve the overall strength of the photovoltaic cable.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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 flame-retardant and weather-resistant photovoltaic cable, comprising a cable core (1), characterized in that: The outer wall of the cable core (1) is fixedly connected to an insulating layer (2), the insulating layer (2) is connected to a reinforcing layer (9) via an improved assembly, the outer wall of the reinforcing layer (9) is fixedly connected to a wear-resistant layer (10), square grooves (11) are provided in the middle of both sides of the outer wall of the wear-resistant layer (10), and the inside of the square grooves (11) on both sides are clamped with clamping strips (12).

2. The flame-retardant and weather-resistant photovoltaic cable according to claim 1, characterized in that: The improved component comprises a lower hemisphere (5) fixedly connected to the outer wall of the insulating layer (2), wherein the lower hemispheres (5) are arranged in groups of four, a plurality of rubber arc sheets (3) are evenly and fixedly connected to the outer wall of the insulating layer (2), and a plurality of upper hemispheres (4) are evenly and fixedly connected to the top of the inner wall of the rubber arc sheet (3) from front to back.

3. The flame-retardant and weather-resistant photovoltaic cable according to claim 2, characterized in that: The bottom of the upper hemisphere (4) is respectively opposite to the center of the intersection of each group of the lower hemispheres (5), and both the upper hemisphere (4) and the lower hemisphere (5) are made of rubber.

4. The flame-retardant and weather-resistant photovoltaic cable according to claim 3, characterized in that: A plurality of chlorinated polyethylene strips (6) are evenly and fixedly connected around the outer wall of the insulating layer (2) and located between two of the rubber arc sheets (3).

5. The flame-retardant and weather-resistant photovoltaic cable according to claim 4, characterized in that: A plurality of guide strips (13) are fixedly connected to the upper and lower sides of the clamping strips (12) on both sides, and the inner walls of the guide strips (13) on both sides are tightly attached to the outer wall of the wear-resistant layer (10).

6. The flame-retardant and weather-resistant photovoltaic cable according to claim 5, characterized in that: The outer wall of the rubber arc sheet (3) is bonded with a fire-resistant mica layer resistance (14), and the outer wall of the fire-resistant mica layer resistance (14) is provided with a plurality of partition layers (7) around it.

7. The flame-retardant and weather-resistant photovoltaic cable according to claim 6, characterized in that: A fireproof layer (8) is provided between each of the partition layers (7), and the fireproof layer (8) is a glass fiber mesh layer. The side of the partition layer (7) away from the fire-resistant mica layer (14) is fixedly connected to the inner wall of the reinforcement layer (9).

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