Snow melting heating cable for photovoltaic panel
By designing a heating cable with a symmetrical wire layer and a spiral electric heating wire structure on the photovoltaic panel, the problem of poor thermal conductivity in the prior art is solved, more efficient heat exchange and stability are achieved, and the snow melting effect is improved.
Patent Information
- Application Number
- CN202420433371.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-06
AI Technical Summary
The existing heating cables have poor thermal conductivity on photovoltaic panels, resulting in waste of heat energy and excessive local temperatures.
Design a snow-melting heating cable for photovoltaic panels, adopting a combined structure of a wire layer, an electric heating wire and a protective outer layer. The wire layer is provided with two sets of symmetrical wire layers, the electric heating wire is a spiral structure, and the cross-section is "∞" The conductor layer is set with a positioning rib and thermal insulation layer, and thermal silicone sheets are added on both sides of the electric heating wire to improve heat exchange efficiency and prevent heat from affecting the conductor.
A more uniform heating effect is achieved, avoiding waste of heat energy and local temperatures are too high, ensuring full fit and stable contact between the cable and the photovoltaic panels, and improving the snow melting effect.
Smart Images
Figure CN222263057U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heating cables, in particular to a snow-melting heating cable for photovoltaic panels. Background Art
[0002] Heating cables are mainly used for heating life, plant cultivation, pipe insulation, etc. Heating cables use single or multiple alloy heating wires as heat sources, high-purity, high-temperature, fused crystalline magnesium oxide as thermal insulators, seamless continuous stainless steel or copper tubes as sheaths, and are manufactured using a special production process. PE or low-smoke halogen-free jackets can be added to places with strong corrosion. Photovoltaic panels are green energy production equipment in the new century and are widely used in various environments. The power generation efficiency of photovoltaic panels is closely related to the exposure of their surface to sunlight. In winter, when it snows, the surface of photovoltaic panels is covered with snow, and their power generation efficiency is greatly affected. In the prior art, heating cables are laid on the back of photovoltaic panels to achieve the purpose of melting snow.
[0003] A heating cable with publication number CN205389276U comprises: an insulating layer, the insulating layer is made of insulating material; a heating loop conductor, the heating loop conductor is arranged in at least two layers in a circumferential shape, at least one layer of the heating loop conductor is connected to the positive pole of the power supply, at least one layer of the heating loop conductor is connected to the negative pole of the power supply, and at least one layer of the insulating layer is arranged between the heating loop conductors of adjacent layers; a sheath layer, the sheath layer is arranged outside the outermost layer of the heating loop conductor; a fluid cavity, the fluid cavity is arranged along the axial direction of the heating cable or in a direction parallel to the axial direction, is located in the sheath layer, and is used for circulating a heat-conducting fluid, and the fluid cavity is wrapped by insulating material; the invention object of the utility model is to provide a heating cable that heats evenly, dissipates heat sufficiently, and avoids the occurrence of local excessive temperature.
[0004] The above-mentioned heating cables have some problems in practical application. The contact area between the heating cables and the photovoltaic panels is small during application, and the heat conduction effect is poor, resulting in a large amount of heat energy waste.
[0005] Therefore, it is necessary to invent a snow-melting heating cable for photovoltaic panels to solve the above problems. Utility Model Content
[0006] The purpose of the utility model is to provide a snow melting heating cable for photovoltaic panels to solve the problems raised in the above background technology.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a snow-melting heating cable for photovoltaic panels, comprising a conductor layer, a heating wire and a protective outer layer, wherein the conductor layer, the heating wire and the protective outer layer are arranged in sequence from the inside to the outside, and the conductor layer is provided with two groups, and the two groups of conductor layers are symmetrically arranged, the heating wire is arranged as a spiral structure, and the heating wire is arranged around the outside of the two groups of conductor layers, the cross-section of the heating wire is arranged as an "∞" structure, the conductor layer comprises positioning ribs, a conductor core, a thermal insulation layer and an insulating layer, and the positioning ribs, the conductor core, the thermal insulation layer and the insulating layer are arranged in sequence from the inside to the outside.
[0008] Preferably, the positioning ribs are arranged in a "cross" shape structure, and the conductor cores are arranged in four groups, and the four groups of conductor cores are arranged around the outside of the positioning ribs.
[0009] Preferably, the heat insulation layer comprises a plurality of staggeredly arranged strips of asbestos, and the plurality of strips of asbestos are all arranged in a surrounding structure.
[0010] Preferably, the insulating layer is made of insulating rubber.
[0011] Preferably, the heating wire is made of graphene.
[0012] Preferably, thermally conductive silicone sheets are fixedly provided on both sides of the heating wire, and the thermally conductive silicone sheets are provided in a strip structure.
[0013] Technical effects and advantages of the utility model:
[0014] 1. The utility model provides a conductor layer, and a heating wire is provided on the outside of the conductor layer. The heating wire is provided in a spiral structure, and the cross section of the heating wire is provided in an "∞" shape. When the cable is laid on the back of the photovoltaic panel, it can be fully fitted with the back of the photovoltaic panel to ensure that the heat generated by the heating wire can be fully utilized. At the same time, heat-conducting silicone sheets are provided on both sides of the heating wire to further enhance the heat exchange between the heating wire and the photovoltaic panel, thereby achieving the effect of enhancing the cable snow melting;
[0015] 2. The utility model sets a conductor layer, and the conductor layer is provided with two groups. The two groups of conductor layers can respectively realize the current transmission of the positive and negative poles to achieve the purpose of conductivity. By setting positioning ribs and conductor cores inside the conductor layer, the positioning ribs can realize the positioning of the conductor core, thereby preventing the conductor cores from being entangled with each other and breaking during the laying process of the cable, thereby ensuring the stability of the cable when in use. By setting a heat insulation layer on the outside of the conductor core, the setting of the heat insulation layer can prevent the heat generated by the heating wire from affecting the conductor core, thereby ensuring that the cable can achieve normal current transmission while heating and melting snow. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1It is a schematic diagram of the overall structure of the utility model.
[0017] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model.
[0018] Figure 3 This is a schematic diagram of the heating wire structure of the utility model.
[0019] Figure 4 It is a schematic diagram of the conductor layer structure of the utility model.
[0020] In the figure: 1. Wire layer; 2. Heating wire; 3. Protective outer layer; 4. Thermal conductive silicone sheet; 5. Positioning ribs; 6. Wire core; 7. Thermal insulation layer; 8. Insulation layer. DETAILED DESCRIPTION
[0021] 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.
[0022] The utility model provides Figure 1-4 A snow melting heating cable for photovoltaic panels shown in the figure comprises a conductor layer 1, a heating wire 2 and a protective outer layer 3, the conductor layer 1, the heating wire 2 and the protective outer layer 3 are arranged in sequence from the inside to the outside, the conductor layer 1 is provided with two groups, and the two groups of conductor layers 1 are symmetrically arranged, the heating wire 2 is arranged in a spiral structure, and the heating wire 2 is arranged around the outside of the two groups of conductor layers 1, the cross section of the heating wire 2 is arranged in an "∞" structure, the conductor layer 1 comprises a positioning rib 5, a conductor core 6, a heat insulation layer 7 and an insulating layer 8, the positioning rib 5, the conductor core 6, the heat insulation layer 7 and the insulating layer 8 are arranged in sequence from the inside to the outside;
[0023] Specifically, the positioning rib 5 is arranged in a "cross" shape structure, four groups of conductor cores 6 are arranged, and the four groups of conductor cores 6 are arranged around the outside of the positioning rib 5, the heat insulation layer 7 includes a plurality of staggered strips of asbestos, and the plurality of strips of asbestos are arranged in a surrounding structure, and the material of the insulating layer 8 is insulating rubber;
[0024] More specifically, the heating wire 2 is made of graphene material, and thermally conductive silicone sheets 4 are fixedly arranged on both sides of the heating wire 2, and the thermally conductive silicone sheets 4 are arranged in a strip structure. The thermally conductive silicone sheets 4 are used to increase the contact area between the heating wire 2 and the protective outer layer 3, thereby improving the heat transfer effect between the heating wire 2 and the photovoltaic panel.
[0025] In summary, when the utility model is used, the two sets of wire layers 1 can be connected to the positive and negative electrodes of the photovoltaic panel respectively to realize the output of current, and the heating wire 2 can be connected to the power supply circuit. When the surface of the photovoltaic panel is covered with snow, the circuit of the heating wire 2 is closed, so that the heating wire 2 is energized and heated, and the snow melting function can be realized;
[0026] The utility model sets a conductor layer 1, and a heating wire 2 is set on the outside of the conductor layer 1. The heating wire 2 is set as a spiral structure, and the cross section of the heating wire 2 is set as an "∞" shape. When the cable is laid on the back of the photovoltaic panel, it can fully fit with the back of the photovoltaic panel to ensure that the heat generated by the heating wire 2 can be fully utilized. At the same time, thermal conductive silicone sheets 4 are also set on both sides of the heating wire 2 to further improve the heat exchange between the heating wire 2 and the photovoltaic panel, so as to achieve the effect of improving the cable snow melting. By setting the conductor layer 1, the conductor layer 1 is provided with two groups, and the two groups of conductors Layer 1 can realize the current transmission of positive and negative poles respectively to achieve the purpose of conductivity. By arranging positioning ribs 5 and conductor cores 6 inside the conductor layer 1, the positioning ribs 5 can realize the positioning of the conductor cores 6, thereby preventing the conductor cores 6 from being entangled with each other and breaking during the laying process of the cable, thereby ensuring the stability of the cable when in use. By arranging a heat insulation layer 7 on the outside of the conductor core 6, the setting of the heat insulation layer 7 can prevent the heat generated by the heating wire 2 from affecting the conductor core 6, thereby ensuring that the cable can achieve normal current transmission while heating and melting snow.
[0027] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to 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 utility model shall be included in the protection scope of the present utility model.
Claims
1. A snow melting heating cable for photovoltaic panels, comprising a conductor layer (1), a heating wire (2) and a protective outer layer (3), characterized in that: The conductor layer (1), the heating wire (2) and the protective outer layer (3) are arranged in sequence from the inside to the outside. The conductor layer (1) is provided with two groups, and the two groups of conductor layers (1) are symmetrically arranged. The heating wire (2) is arranged in a spiral structure, and the heating wire (2) is arranged around the outside of the two groups of conductor layers (1). The cross-section of the heating wire (2) is arranged in an "∞" structure. The conductor layer (1) comprises a positioning rib (5), a conductor core (6), a heat insulation layer (7) and an insulating layer (8). The positioning rib (5), the conductor core (6), the heat insulation layer (7) and the insulating layer (8) are arranged in sequence from the inside to the outside.
2. The snow melting heating cable for photovoltaic panels according to claim 1, characterized in that: The positioning rib (5) is arranged in a "cross"-shaped structure, and the conductive wire cores (6) are arranged in four groups, and the four groups of conductive wire cores (6) are arranged around the outer side of the positioning rib (5).
3. The snow melting heating cable for photovoltaic panels according to claim 2, characterized in that: The heat insulation layer (7) comprises a plurality of staggeredly arranged strips of asbestos, and the plurality of strips of asbestos are all arranged in a surrounding structure.
4. The snow melting heating cable for photovoltaic panels according to claim 3, characterized in that: The material of the insulating layer (8) is insulating rubber.
5. The snow melting heating cable for photovoltaic panels according to claim 4, characterized in that: The heating wire (2) is made of graphene material.
6. A snow melting heating cable for photovoltaic panels according to claim 5, characterized in that: Thermally conductive silicone sheets (4) are fixedly arranged on both sides of the heating wire (2), and the thermally conductive silicone sheets (4) are arranged in a strip-shaped structure.