Tensile weather-proof bunched aerial cable
By using a design that combines conductive lines with corrugated filler layers in cluster overhead cables, combined with flame retardant layer, polyvinyl chloride insulating layer and Kevlar fiber layer, the problem of sagging and stretching of cluster overhead cables as length increases is solved. , achieves tensile weather resistance and service life in severe weather.
Patent Information
- Application Number
- CN202420507113.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-03-15
AI Technical Summary
When the length of the existing cluster overhead cable increases, the increased mass of the solid sheath layer causes an increase in the probability of sagging and stretching, which reduces the practicality of the device, especially in bad weather.
Conductive lines are combined with corrugated filling layer, with flame retardant layer, polyvinyl chloride insulating layer and Kevlar fiber layer, and heating conductors and UV-resistant coating are provided in the insulating sheath layer, and hollow areas are arranged in the middle of the filling layer With arc protrusions, the corrugated filling layer adopts capsule-like cross-sections, the conductive lines are distributed equally at a distance, the Kevlar fiber layer overlaps the midline of the filling layer, and the polyvinyl chloride insulating layer is symmetrically arranged to ensure tensile strength and balance.
While ensuring the strength of cluster overhead cables, it reduces its mass, reduces sagging, and effectively cleans snow and ice in bad weather, extends service life, and improves tensile weather resistance.
Smart Images
Figure CN222281622U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of overhead bundled overhead cables, in particular to a tensile-resistant and weather-resistant bundled overhead cable. Background Art
[0002] Bundled overhead cable is a bundled overhead cable system for power transmission, usually composed of multiple insulated conductors that are bundled together and hung on brackets. Bundled overhead cables are usually used for medium and low voltage transmission lines, which can effectively transmit electric energy and reduce energy loss. Bundled overhead cables are usually more economical than buried bundled overhead cable systems because of lower installation and maintenance costs. In addition, since the conductors of bundled overhead cables can share brackets, the number of brackets can be reduced, the construction cost can be reduced, and the bundled overhead cable system can be expanded and upgraded as needed, with high flexibility. The number of conductors can be increased or decreased according to actual needs to meet different power needs. In harsh environments, natural severe weather such as wind, earthquake, rain, thunder, and ice on transmission lines seriously threatens the safe operation of power grid equipment, often causing some transmission lines to collapse and disconnect due to overload, causing devastating damage to power facilities and causing serious harm to the safe operation of the power system.
[0003] Tensile weather resistance refers to the ability of a material to maintain its performance under tensile force without being affected by external environmental factors. The existing treatment method is to increase the tensile resistance of the device by adding a tensile structure inside the sheath layer. As the length of the bundled overhead cable increases, the solid sheath layer will increase the mass of the bundled overhead cable, which will easily increase the probability of the bundled overhead cable sagging and stretching, reducing the practicality of the device when in use. Utility Model Content
[0004] In view of the above problems, the purpose of the utility model is to provide a tensile-resistant and weather-resistant bundled overhead cable. The existing treatment method is to increase the tensile resistance of the device by adding a tensile-resistant structure inside the sheath layer. As the length of the bundled overhead cable increases, the solid sheath layer will increase the mass of the bundled overhead cable, which will easily increase the probability of the bundled overhead cable sagging and stretching, reducing the practicability of the device when in use.
[0005] To achieve the above objectives, the utility model adopts the following technical solution: a tensile-resistant and weather-resistant clustered overhead cable, comprising a conductive line and a corrugated filling layer, the outer side of the conductive line is provided with a flame-retardant layer one, and the outer side of the flame-retardant layer one is provided with a filling layer one, the outer side of the filling layer one is provided with a flame-retardant layer two, the outer side of the flame-retardant layer two is provided with a polyvinyl chloride insulation layer, the outer side of the polyvinyl chloride insulation layer is provided with a filling layer two, and a Kevlar fiber layer is installed in the middle part of the filling layer two, the corrugated filling layer is installed on the outer side of the filling layer two, and an insulating sheath layer is provided on the outer side of the corrugated filling layer, a heating conductor is installed inside the insulating sheath layer, and the outer side of the insulating sheath layer is coated with an anti-ultraviolet coating.
[0006] The beneficial effects of the utility model are as follows: through the hollow part inside the second filling layer and the corrugated filling layer, the mass of the bundled overhead cables can be reduced while ensuring the strength of the bundled overhead cables, thereby reducing the sagging of the bundled overhead cables, and also increasing the service life of the bundled overhead cables in areas with high sunshine intensity.
[0007] In freezing rain or sleet, snowflakes and freezing rain will accumulate on top of the bundled overhead cables. The heating conductor heats the outside of the bundled overhead cables. The arc protrusions arranged on the outside of the insulating sheath layer can facilitate the melted water to flow down from the bundled overhead cables, and can also facilitate the drainage of rainwater in rainy weather. This method can effectively reduce the volume and weight of ice and snow accumulated on top of the bundled overhead cables, and avoid the phenomenon of sagging of the bundled overhead cables due to the increase of weight of the bundled overhead cables due to ice and snow.
[0008] To reduce the mass of bundled overhead cables:
[0009] As a further improvement of the above technical solution: hollow areas are arranged at equal intervals in the middle of the second filling layer, and the hollow areas are arranged in a diamond shape.
[0010] The beneficial effect of this improvement is that the diamond-shaped hollow areas arranged at equal intervals can reduce the overall mass of the filling layer 2, thereby reducing the mass of the bundled overhead cables. This method can reduce the mass of the bundled overhead cables while ensuring the strength of the bundled overhead cables, thereby reducing the sagging of the bundled overhead cables.
[0011] In order to ensure the structural strength of the device:
[0012] As a further improvement of the above technical solution: the cross section of the corrugated filling layer is configured in a capsule shape.
[0013] The beneficial effects of this improvement are: the corrugated filling layer is in a corrugated shape, which can effectively reduce the mass of the device, and the capsule-shaped corrugated filling layer can be reliably matched with the second filling layer, thereby ensuring the overall structural strength of the bundled overhead cable.
[0014] To facilitate water sliding off:
[0015] As a further improvement of the above technical solution: arc-shaped protrusions are provided on the front and rear sides of the insulating sheath layer.
[0016] The beneficial effect of this improvement is that the arc protrusions arranged on the outside of the insulating sheath layer can facilitate the melted water to flow down from the bundled overhead cables, and can also facilitate the drainage of rainwater in rainy weather. This method can effectively reduce the volume and weight of ice and snow accumulated on the bundled overhead cables, and avoid the bundled overhead cables from sagging due to the weight of the bundled overhead cables being increased by ice and snow.
[0017] To facilitate the removal of snow from bundled overhead cables:
[0018] As a further improvement of the above technical solution: the heating conductor is symmetrically arranged about the center line of the corrugated filling layer.
[0019] The beneficial effect of this improvement is that the heating conductors symmetrically arranged on the center line can heat the upper and lower sides of the bundled overhead cables, can completely and reliably melt the snow on the bundled overhead cables, and can effectively clear the snow on the bundled overhead cables in conjunction with the insulating sheath layer.
[0020] To ensure the tensile strength of the device:
[0021] As a further improvement of the above technical solution: the Kevlar fiber layer and the second filling layer are arranged with their center lines overlapping.
[0022] The beneficial effects of this improvement are: the Kevlar fiber layer cooperates with the second filling layer to ensure the tensile strength of the device, and the Kevlar fiber layer arranged with the center line overlapped can reliably and effectively provide tensile protection for the bundled overhead cables.
[0023] To ensure power supply:
[0024] As a further improvement of the above technical solution: the conductive lines are distributed at equal intervals on the inner side of the filling layer 1.
[0025] The beneficial effect of this improvement is that the conductive lines distributed at equal intervals can effectively ensure the power supply of the device.
[0026] To ensure the balance of the device:
[0027] As a further improvement of the above technical solution: two polyvinyl chloride insulation layers are symmetrically arranged about the second center line of the filling layer.
[0028] The beneficial effect of this improvement is that the two polyvinyl chloride insulation layers can ensure the balance of the device and also make the device more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 This is a schematic diagram of the overall axonometric structure.
[0030] Figure 2 It is a schematic diagram of the overall axonometric section structure.
[0031] Figure 3 This is a schematic diagram of the overall axonometric explosion structure.
[0032] Figure 4 It is a schematic diagram of the overall structure from a top view.
[0033] Figure 5 for Figure 4 Enlarged structural diagram at A in the middle.
[0034] In the figure: 1. Conductive circuit; 11. Flame retardant layer one; 12. Filling layer one; 13. Flame retardant layer two; 14. Polyvinyl chloride insulation layer; 2. Filling layer two; 21. Kevlar fiber layer; 3. Corrugated filling layer; 31. Insulating sheath layer; 32. Heating conductor; 33. Anti-ultraviolet coating. DETAILED DESCRIPTION
[0035] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.
[0036] like Figure 1-5As shown, a tensile weather-resistant clustered overhead cable comprises a conductive line 1 and a corrugated filling layer 3, the outer side of the conductive line 1 is sheathed with a flame retardant layer 11, and the outer side of the flame retardant layer 11 is sheathed with a filling layer 12, the outer side of the filling layer 12 is sheathed with a flame retardant layer 2 13, the outer side of the flame retardant layer 2 13 is sheathed with a polyvinyl chloride insulation layer 14, the outer side of the polyvinyl chloride insulation layer 14 is provided with a filling layer 2 2, and a Kevlar fiber layer 21 is installed in the middle of the filling layer 2 2, the corrugated filling layer 3 is installed on the outer side of the filling layer 2 2, and an insulating sheath layer 31 is arranged on the outer side of the corrugated filling layer 3, a heating conductor 32 is installed inside the insulating sheath layer 31, and the outer side of the insulating sheath layer 31 is coated with an anti-ultraviolet The coating 33 can reduce the mass of the bundled overhead cable while ensuring the strength of the bundled overhead cable through the hollow part inside the filling layer 2 and the corrugated filling layer 3, thereby reducing the sagging of the bundled overhead cable and increasing the service life of the bundled overhead cable in areas with high sunshine intensity. In freezing rain or rainy and snowy weather, snowflakes and freezing rain will accumulate on the top of the bundled overhead cable, and the heating conductor 32 heats the outside of the bundled overhead cable. The arc protrusions arranged on the outside of the insulating sheath layer 31 can facilitate the melted water to flow down from the bundled overhead cable, and can also facilitate the drainage of rainwater in rainy weather. This method can effectively reduce the volume and weight of ice and snow accumulated on the top of the bundled overhead cable, and avoid the bundled overhead cable from increasing due to ice and snow. The weight of the bundled overhead cables is increased, resulting in the phenomenon of sagging of the bundled overhead cables. The middle part of the filling layer 2 is provided with hollow areas at equal intervals, and the hollow areas are arranged in a diamond shape. The diamond hollow areas arranged at equal intervals can reduce the overall mass of the filling layer 2, thereby reducing the mass of the bundled overhead cables. In this way, the mass of the bundled overhead cables can be reduced while ensuring the strength of the bundled overhead cables, thereby reducing the sagging of the bundled overhead cables. The cross-section of the corrugated filling layer 3 is arranged in a capsule shape. The corrugated filling layer 3 is corrugated, which can effectively reduce the mass of the device. The capsule-shaped corrugated filling layer 3 can be reliably matched with the filling layer 2, thereby ensuring the overall structural strength of the bundled overhead cables. The insulating sheath layer Arc-shaped protrusions are arranged on the front and rear sides of 31. The arc-shaped protrusions arranged on the outer side of the insulating sheath layer 31 can facilitate the melted water to flow down from the bundled overhead cable, and can also facilitate the drainage of rainwater in rainy weather. This method can effectively reduce the volume and weight of ice and snow accumulated on the bundled overhead cable, and avoid the bundled overhead cable from sagging due to the increase of the weight of the bundled overhead cable due to ice and snow. The heating conductor 32 is symmetrically arranged about the center line of the corrugated filling layer 3. The heating conductor 32 symmetrically arranged on the center line can heat the upper and lower sides of the bundled overhead cable, and can fully and reliably melt the snow on the bundled overhead cable. In conjunction with the insulating sheath layer 31, the snow on the bundled overhead cable can be effectively cleaned.The Kevlar fiber layer 21 and the filling layer 2 are arranged with the center line overlapped. The Kevlar fiber layer 21 cooperates with the filling layer 2 to ensure the tensile strength of the device. The Kevlar fiber layer 21 with the center line overlapped can reliably and effectively provide tensile protection for the bundled overhead cables. The conductive lines 1 are evenly spaced and distributed on the inner side of the filling layer 12. The evenly spaced conductive lines 1 can effectively ensure the power supply of the device. The polyvinyl chloride insulation layer 14 is symmetrically arranged with respect to the center line of the filling layer 2. The two polyvinyl chloride insulation layers 14 can ensure the balance of the device and make the device more beautiful.
[0037] The working principle of the utility model is as follows: when using the device, the bundled overhead cable is erected through a bracket, and during the use of the bundled overhead cable, the filling layer 2 cooperates with the Kevlar fiber layer 21 to increase the tensile strength of the conductive line 1, and the insulating sheath layer 31 cooperates with the corrugated filling layer 3 to also increase the tensile strength of the conductive line 1, and the anti-ultraviolet coating 33 increases the anti-ultraviolet strength of the bundled overhead cable. The above method can increase the tensile strength of the device, and the hollow part inside the filling layer 2 and the corrugated filling layer 3 can reduce the mass of the bundled overhead cable while ensuring the strength of the bundled overhead cable, thereby reducing the bundled overhead cable. The drooping of the cable can also increase the service life of the bundled overhead cables in areas with high sunshine intensity. In freezing rain or rainy and snowy weather, snowflakes and freezing rain will accumulate on the top of the bundled overhead cables. The heating conductor 32 heats the outside of the bundled overhead cables. The arc protrusions set on the outside of the insulating sheath layer 31 can facilitate the melted water to flow down from the bundled overhead cables, and can also facilitate the drainage of rainwater in rainy weather. This method can effectively reduce the volume and weight of ice and snow accumulated on the bundled overhead cables, and avoid the bundled overhead cables from sagging due to the weight of the bundled overhead cables being increased due to ice and snow.
[0038] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.
[0039] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, embellishments or changes, and can also combine the above technical features in an appropriate manner; these improvements, embellishments, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.
Claims
1. A tensile and weather-resistant bundled overhead cable, comprising a conductive line (1) and a corrugated filling layer (3), characterized in that: The outer side of the conductive circuit (1) is provided with a flame retardant layer 1 (11), and the outer side of the flame retardant layer 1 (11) is provided with a filling layer 1 (12), the outer side of the filling layer 1 (12) is provided with a flame retardant layer 2 (13), the outer side of the flame retardant layer 2 (13) is provided with a polyvinyl chloride insulation layer (14), the outer side of the polyvinyl chloride insulation layer (14) is provided with a filling layer 2 (2), and the middle part of the filling layer 2 (2) is installed with a Kevlar fiber layer (21), the corrugated filling layer (3) is installed on the outer side of the filling layer 2 (2), and the outer side of the corrugated filling layer (3) is provided with an insulating sheath layer (31), the interior of the insulating sheath layer (31) is provided with a heating conductor (32), and the outer side of the insulating sheath layer (31) is coated with an anti-ultraviolet coating (33).
2. The tensile-resistant and weather-resistant bundled overhead cable according to claim 1, characterized in that: The middle part of the second filling layer (2) is provided with hollow areas at equal intervals, and the hollow areas are arranged in a diamond shape.
3. The tensile-resistant and weather-resistant bundled overhead cable according to claim 1, characterized in that: The cross section of the corrugated filling layer (3) is arranged in a capsule shape.
4. The tensile-resistant and weather-resistant bundled overhead cable according to claim 1, characterized in that: Arc-shaped protrusions are provided on the front and rear sides of the insulating sheath layer (31).
5. The tensile-resistant and weather-resistant bundled overhead cable according to claim 1, characterized in that: The heating conductor (32) is arranged symmetrically with respect to the center line of the corrugated filling layer (3).
6. The tensile-resistant and weather-resistant bundled overhead cable according to claim 1, characterized in that: The Kevlar fiber layer (21) and the second filling layer (2) are arranged with their center lines overlapping.
7. The tensile-resistant and weather-resistant bundled overhead cable according to claim 1, characterized in that: The conductive lines (1) are distributed at equal intervals on the inner side of the filling layer 1 (12).
8. The tensile-resistant and weather-resistant bundled overhead cable according to claim 1, characterized in that: Two polyvinyl chloride insulation layers (14) are symmetrically arranged about the center line of the second filling layer (2).