A bundled aerial insulated cable
Through the design of multi-layer insulation and mechanical protection structure, the problem of unstable insulation performance of traditional bundled overhead cables in complex environments has been solved, realizing stable operation of cables under harsh conditions and extending their service life.
Patent Information
- Application Number
- CN202520276532.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-20
AI Technical Summary
Traditional bundled overhead cables are prone to leakage or short circuits when exposed to moisture, rainwater, or other conductive media. Their insulation performance is unstable, and they require frequent maintenance in complex environments.
The cable employs a multi-layer insulation structure design, including a moisture-proof layer, multi-layer insulation layers, insulation filler, shielding layer, and protective components, which enhances the cable's insulation performance and structural stability, and provides additional mechanical protection through an outer protective sheath and an inner protective sheath.
It effectively prevents cables from getting damp and leaking current, enhances the cable's tensile strength, ensures stable operation in complex environments, and extends its service life.
Smart Images
Figure CN223612110U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cable technical field especially relates to a cluster overhead insulated cable. BACKGROUND
[0002] The cluster overhead insulated cable is a kind of cable form that multiple insulated wires are bundled into groups, protected by outer sheath and multiple protective layers, widely used in urban power grid reconstruction, rural power grid upgrading and power transmission in complex environment. It adopts high-performance insulating materials and multi-layer protection design, with excellent moisture resistance, corrosion resistance, high temperature resistance and mechanical damage resistance, which can effectively avoid short circuit and safety hazards caused by traditional bare wires contacting trees, buildings or other obstacles. In addition, the cluster design makes the cable structure compact, reduces the occupied space, is convenient to install, and reduces the mutual interference between transmission lines. In modern complex power transmission and distribution environment, using cluster overhead insulated cable not only can significantly improve the safety and reliability of power supply, but also can meet the needs of environmental protection and aesthetics, which is an ideal alternative to traditional bare wires.
[0003] Traditional cluster overhead cables are usually used by bundling multiple bare wires or simply insulated wires into bundles and hanging on poles or cross arms. This design uses fixed support and binding structure to maintain the stability of the wires to reduce the swing and friction between the wires. It is mainly used for low-voltage distribution lines, relatively simple to install, suitable for short-distance power supply needs. However, due to the limited insulation performance between the wires, traditional cluster overhead cables are easily affected by external environment, such as humidity, high temperature, corrosive gases and mechanical damage, and may cause short circuit or leakage problems when trees contact or animals move. Therefore, the use of traditional cluster overhead cables requires frequent maintenance and shows certain limitations in complex or high-risk environments.
[0004] Traditional cluster overhead cables are usually composed of bare wires or wires with only basic insulation layer, and efficient electrical isolation between wires is difficult to achieve, which makes the cable prone to leakage or short circuit problems when moisture, rain or other conductive media invade, and the insulation performance is unstable. UTILITY MODEL CONTENTS
[0005] In order to make up for the above shortcomings, the utility model provides a kind of cluster overhead insulated cable, to improve the problem that traditional cluster overhead cable is prone to leakage or short circuit problem when moisture, rain or other conductive medium invades, and the insulation performance is unstable.
[0006] To achieve the above object, the utility model provides the following technical scheme: a cluster overhead insulated cable, including the outer protective sheath, the inside of outer protective sheath is provided with a plurality of insulation cover, a plurality of the inside of insulation cover is provided with the separation filling, the inside of a plurality of insulation cover all is provided with cable core, the inside of insulation cover is provided with insulation assembly, insulation assembly is used for preventing cable core power leakage, the inside of outer protective sheath is provided with protection assembly, protection assembly is used for protecting cable core,
[0007] The insulation assembly includes a moisture-proof layer, which is arranged on the inner side of the insulation cover. A multi-layer insulation layer is arranged on the middle side of the inner side of the insulation cover. An insulation filler is arranged between the insulation cover and the cable core.
[0008] Through the above technical scheme, the inside of the outer protective sheath is provided with a plurality of insulation covers, and the plurality of insulation covers are provided with a separation filling. The separation filling is used to fill the gap between the insulation covers, ensure the compact structure and provide isolation protection. The inside of the plurality of insulation covers is provided with a cable core. The cable core is the core part of the cable, which is protected by the insulation cover to prevent power leakage. The inside of the insulation cover is provided with an insulation assembly. The insulation assembly ensures the power safety of the cable core through multiple insulation structures, effectively prevents external factors from interfering. The inside of the outer protective sheath is provided with a protection assembly, which is used to provide multiple protection for the cable core, enhance the adaptability and operation stability of the cable. The moisture-proof layer is attached to the inner side of the insulation cover, which is mainly used to block the penetration of moisture into the cable, effectively preventing the cable from being damp. The middle side of the inner side of the insulation cover is provided with a multi-layer insulation layer, which is formed by stacking multiple layers of insulation rubber. The multi-layer design further enhances the electrical insulation performance of the cable. An insulation filler is arranged between the insulation cover and the cable core, which can effectively fill the gap between the structures, make the cable more compact, and block the current leakage.
[0009] Further, the protection assembly includes a heat-resistant layer, which is arranged on the inner side of the outer protective sheath. A shielding layer is arranged on the middle side of the inner side of the outer protective sheath. An anti-abrasion layer is arranged on the outer side of the inner side of the outer protective sheath. An anti-corrosion layer is arranged between the anti-abrasion layer and the anti-corrosion layer.
[0010] Through the above technical scheme, the heat-resistant layer is arranged on the inner side of the outer protective sheath, which has excellent heat insulation performance and can effectively prevent high temperature from affecting the performance of the cable. The shielding layer has electromagnetic shielding function, which can effectively shield external electromagnetic interference. The anti-abrasion layer has excellent wear resistance, which can protect the outer layer of the cable from damage caused by external friction or impact, prolong the service life of the cable. The anti-corrosion layer can prevent the cable from being damaged by corrosive environments such as acid rain and salt fog.
[0011] Further, the outer wall of the outer protective sleeve is provided with an outer protective sleeve, the inner side of the insulating sleeve is provided with an inner protective sleeve, the outer wall of the insulating sleeve is attached with a stretch-resistant protective sleeve, the inner wall of the stretch-resistant protective sleeve is fixedly connected with a support plate, and the stretch-resistant protective sleeve and the outer protective sleeve are provided with an elastic element.
[0012] Through the above technical scheme, the outer protective sleeve enhances the external protection performance of the cable, further improves the overall firmness, and the inner protective sleeve provides additional protection to the cable core, enhances the impact resistance, the outer wall of the insulating sleeve is attached with a stretch-resistant protective sleeve, the stretch-resistant protective sleeve increases the tensile resistance of the cable to prevent damage when the cable is subjected to external force, the inner wall of the stretch-resistant protective sleeve is fixedly connected with a support plate, the support plate enhances the structural stability of the stretch-resistant protective sleeve, and the stretch-resistant protective sleeve and the outer protective sleeve are provided with an elastic element, which buffers the impact of external force and prevents the cable from being damaged due to tension or vibration.
[0013] Further, the insulating filler is made of PE foam material, and the multi-layer insulating layer is made of multi-layer insulating rubber, which is used to improve the electrical insulation performance and prevent breakdown.
[0014] Through the above technical scheme, the insulating filler is made of PE foam material, which has excellent filling and insulation performance, can fill the gap between the insulating sleeve and the cable core, ensure the compactness of the cable structure and further prevent current leakage, and the multi-layer insulating layer is made of multi-layer insulating rubber, which improves the insulation effect through multi-layer stacking to prevent the cable core from being broken down due to electric field concentration, thereby improving the electrical safety performance of the cable.
[0015] Further, the moisture-proof layer is made of cross-linked polyethylene material to prevent water from penetrating into the cable.
[0016] Through the above technical scheme, the moisture-proof layer is made of cross-linked polyethylene material, which can effectively prevent water from penetrating into the cable, protect the cable core from the influence of humid environment, and further improve the insulation performance of the cable to ensure its stable operation in high humidity environment.
[0017] Further, the heat-resistant layer is made of mica tape to maintain the insulation performance of the cable.
[0018] Through the above technical scheme, the heat-resistant layer is made of mica tape, which has excellent high-temperature resistance and heat insulation performance, can block the influence of external high temperature on the internal structure of the cable, thereby maintaining the insulation performance of the cable and providing reliable power transmission capability in complex high temperature environment.
[0019] Further, the shielding layer is formed by copper wire weaving to provide electromagnetic shielding and mechanical protection capability.
[0020] Through the technical scheme, the shielding layer is formed by copper wire weaving, the copper wire weaving shielding layer effectively prevents electromagnetic interference from entering the cable interior through a physical barrier, while providing certain mechanical protection capability, avoiding influence of external physical damage on the cable, and ensuring stable operation of the cable in signal or power transmission.
[0021] Further, the corrosion-proof layer is made of polyvinyl chloride, and the anti-abrasion layer is made of nylon, so as to provide protection for the cable.
[0022] Through the technical scheme, the corrosion-proof layer is made of polyvinyl chloride, and the anti-abrasion layer is made of nylon, so as to provide protection for the cable.
[0023] The utility model has the advantages of the following beneficial effects:
[0024] 1. In the utility model, the moisture-proof layer, the multi-layer insulation layer and the insulation filling are designed to effectively block the intrusion of moisture, prevent the cable from being damp, and prevent current leakage through the superposition design of the multi-layer insulation layer. In addition, the insulation filling not only fills the gap between the structures, but also makes the cable more compact, and further enhances the insulation effect. Then, the heat-resistant layer prevents high temperature from affecting the performance of the cable. The anti-abrasion layer, the shielding layer and the corrosion-proof layer ensure the stability of signal and power transmission, ensure the stable operation of the cable in complex environment, and significantly prolong the service life.
[0025] 2. In the utility model, the outer protective sleeve and the inner protective sleeve further protect the cable core from external force impact, the tensile protective sleeve cooperates with the elastic piece and the supporting plate to improve the tensile resistance of the cable, avoid damage to the cable when subjected to tension, and the internal supporting plate makes the structure more stable and less deformed, ensuring the structural stability and reliability of the cable in overhead operation or harsh laying conditions. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 A three-dimensional structure schematic diagram of the bundled overhead insulated cable is provided for the utility model;
[0027] Figure 2 An internal structure schematic diagram of the insulation sleeve of the bundled overhead insulated cable is provided for the utility model;
[0028] Figure 3 An internal structure schematic diagram of the outer protective sleeve of the bundled overhead insulated cable is provided for the utility model;
[0029] Figure 4The utility model provides a kind of tensile-resistant protective sleeve internal structure diagram of bundled overhead insulated cable.
[0030] Legend:
[0031] 1, outer protective sleeve;101, heat resistance layer;102, shielding layer;103, anticorrosive layer;104, wear-resistant layer;2, insulating sleeve;201, moisture-proof layer;202, multilayer insulation layer;203, inner protective sleeve;3, cable core;4, insulating filling;5, partition filling;6, support plate;7, tensile-resistant protective sleeve;8, elastic member;9, outer protective sleeve. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0033] Reference Figure 1 - Figure 4 An embodiment provided by the utility model: a kind of bundled overhead insulated cable, including outer protective sleeve 1, the inside of outer protective sleeve 1 is provided with multiple insulating sleeves 2, multiple insulating sleeves 2 are provided with partition filling 5, partition filling 5 can effectively isolate multiple insulating sleeves 2, avoid interference and enhance the compactness of overall structure, the inside of multiple insulating sleeves 2 is provided with cable core 3, the inside of insulating sleeve 2 is provided with insulation assembly, insulation assembly is used to prevent cable core 3 power leakage, the inside of outer protective sleeve 1 is provided with protection assembly, protection assembly is used to protect cable core 3, effectively prolongs the service life of cable;
[0034] The insulating assembly includes a moisture-proof layer 201 made of cross-linked polyethylene, arranged on the inner side of the insulating sleeve 2, for blocking moisture penetration and preventing the cable from being damp. The moisture-proof layer 201 is arranged on the inner side of the insulating sleeve 2. The multi-layer insulating layer 202 is made of multi-layer insulating rubber, designed by stacking to prevent current breakdown and improve the safety of power transmission. The multi-layer insulating layer 202 is arranged on the middle side of the insulating sleeve 2. The insulating filler 4 is arranged between the insulating sleeve 2 and the cable core 3, made of PE foam material, which can fill the gap and make the structure more compact, and further block current leakage. The protective assembly includes a heat-resistant layer 101 arranged on the inner side of the outer protective sleeve 1, made of mica tape, arranged on the inner side of the outer protective sleeve 1, for heat insulation and maintaining the insulation performance of the cable. The shielding layer 102 is arranged on the middle side of the outer protective sleeve 1, woven by copper wire, for shielding external electromagnetic interference and providing mechanical protection capability. The wear-resistant layer 104 is arranged on the outer side of the outer protective sleeve 1, made of nylon material, for protecting the outer layer of the cable from damage caused by friction or impact. The corrosion-resistant layer 103 is arranged between the wear-resistant layer 104 and the corrosion-resistant layer 103, made of polyvinyl chloride, for resisting the influence of acid rain, salt mist and other corrosive environments on the cable.
[0035] Specifically, when the bundled overhead insulated cable is needed, the moisture-proof layer 201 is attached to the inner side of the insulating sleeve 2, mainly playing a role in blocking external moisture from entering the cable, thereby preventing the cable from being damp and causing insulation performance to decline or failure. The multi-layer insulating layer 202 is designed on the middle part of the insulating sleeve 2, forming an efficient insulation structure by stacking, which not only prevents the cable from being damaged due to electric field concentration, but also effectively prevents current leakage, improving the overall power safety performance of the cable. At the same time, the insulating filler 4 is also arranged between the insulating sleeve 2 and the cable core 3, filling the structural gap inside the cable, making the cable more compact as a whole, and further enhancing the insulation isolation capability of the current, ensuring the reliability of the cable operation. In addition, the heat-resistant layer 101 is arranged on the inner side of the outer protective sleeve 1, which can effectively protect the internal structure of the cable from being damaged by heat by blocking external high temperature influence. The shielding layer 102 is located at the middle side of the outer protective sleeve 1, which can shield electromagnetic interference and ensure the stability of the cable during power or signal transmission. The corrosion-resistant layer 103 further improves the environmental adaptability of the cable, which can effectively prevent the cable from being corroded by acid rain, salt mist and other harsh environmental factors. The wear-resistant layer 104 is covered on the outside of the outer protective sleeve 1, which plays a role in protecting the outer layer of the cable from being damaged by external mechanical friction or impact, so that the cable can maintain stable operation in various complex environments and prolong the service life.
[0036] Reference Figure 1 Figure 4 The outer wall of the outer protective sleeve 1 is provided with an outer protective sleeve 9, the outer protective sleeve 9 provides additional protection and enhances the overall strength of the cable, the inner side of the insulating sleeve 2 is provided with an inner protective sleeve 203, the inner protective sleeve 203 is used to further protect the cable core 3 from the direct action of external force, the outer wall of the insulating sleeve 2 is attached with a stretch-resistant protective sleeve 7, the stretch-resistant protective sleeve 7 can improve the stretch resistance of the cable when subjected to external force, the inner wall of the stretch-resistant protective sleeve 7 is fixedly connected with a support plate 6, the support plate 6 is used to enhance the structural strength of the stretch-resistant protective sleeve 7, so that it is not easy to deform when subjected to strong tension, the stretch-resistant protective sleeve 7 and the outer protective sleeve 1 are provided with an elastic element 8, the elastic element 8 is used to buffer the vibration or pulling force applied by the outside world, effectively protecting the cable from damage caused by external force impact, the insulating filling 4 is made of PE foam material, the multi-layer insulating layer 202 is made of multi-layer insulating rubber, the insulating filling 4 and the multi-layer insulating layer 202 are used to improve the electrical insulation performance, prevent breakdown, the moisture-proof layer 201 is made of cross-linked polyethylene material, which is used to prevent moisture from penetrating into the cable, the heat-blocking layer 101 is made of mica tape, which is used to maintain the insulation performance of the cable, the shielding layer 102 is formed by copper wire weaving, which is used to provide electromagnetic shielding and mechanical protection capability, the corrosion-resistant layer 103 is made of polyvinyl chloride, and the wear-resistant layer 104 is made of nylon, which is used to provide protection for the cable.
[0037] Specifically, the outermost layer of the outer protective sleeve 1 increases an outer protective sleeve 9, which provides additional protection for the cable and further enhances the firmness of the cable outside, preventing damage to the cable caused by the external environment. In addition, the outer side of the insulating sleeve 2 is specially designed with an inner protective sleeve 203, forming an additional buffer structure, which further protects the internal cable core 3, thereby preventing damage caused by external force directly acting on the cable core 3. At the same time, the outer wall of the insulating sleeve 2 is also closely attached to a stretch-resistant protective sleeve 7, which can significantly improve the stretch resistance of the cable when subjected to external force, avoiding the cable from being pulled apart due to strong tension. The inner wall of the stretch-resistant protective sleeve 7 is fixedly connected with a support plate 6, which enhances the structural strength of the stretch-resistant protective sleeve 7, so that it is not easy to deform when subjected to tension or external pressure, thereby further improving the tensile properties and stability of the cable. Finally, an elastic element 8 is installed between the stretch-resistant protective sleeve 7 and the outer protective sleeve 1, which can effectively disperse the pulling force or vibration impact applied by the outside world through its buffering performance, thereby reducing the risk of damage to the cable caused by vibration or external force, so that the cable can maintain high mechanical stability in complex overhead environments, ensuring that the cable is not easily damaged by external forces during long-term operation.
[0038] Working principle: when the bundled overhead insulated cable is needed, the moisture-proof layer 201 is attached to the inside of the insulating sleeve 2, mainly responsible for blocking moisture, preventing the cable from getting wet, the middle part of the insulating sleeve 2 has a multi-layer insulating layer 202, which adopts a superposition method to prevent breakdown and effectively prevent current leakage, improve the power safety of the cable, the insulating filler 4 is also arranged between the insulating sleeve 2 and the cable core 3, which not only makes the cable structure more compact, but also further blocks current leakage, in addition, the heat-resistant layer 101 can block high temperature and prevent the cable from being affected by heat, the shielding layer 102 can shield electromagnetic interference and ensure that the signal or power transmission of the cable is not affected by the outside, the corrosion-resistant layer 103 can prevent the cable from being corroded by environmental factors such as acid rain and salt fog, and the wear-resistant layer 104 protects the outer layer of the cable from being damaged by friction or impact, so that the cable can operate stably in various complex environments;
[0039] In addition, the outermost layer of the outer protective sleeve 1 is provided with an outer protective sleeve 9, which provides additional protection and makes the cable more secure, and the outer side of the insulating sleeve 2 is further provided with an inner protective sleeve 203, which further protects the inner cable core 3, and the outer wall of the insulating sleeve 2 is closely attached to a stretch-resistant protective sleeve 7, which can prevent the cable from being easily broken when subjected to tension, and the support plate 6 in the stretch-resistant protective sleeve 7 can make the stretch-resistant protective sleeve 7 more solid and not easily deformed, and finally, the elastic member 8 is added between the stretch-resistant protective sleeve 7 and the outer protective sleeve 1, which can buffer the impact of the cable when subjected to external force pulling or vibration, avoiding damage to the cable.
[0040] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, shall be included in the protection scope of the present application.
Claims
1. A bundled aerial insulated cable comprising an outer protective sheath (1), characterized in that: The inner part of the outer protective sleeve (1) is provided with a plurality of insulation sleeves (2), and a partition filling (5) is arranged between the plurality of insulation sleeves (2); the inner part of each of the plurality of insulation sleeves (2) is provided with a cable core (3); the inner part of the insulation sleeve (2) is provided with an insulation assembly for preventing power leakage of the cable core (3); and the inner part of the outer protective sleeve (1) is provided with a protection assembly for protecting the cable core (3). The insulation assembly comprises a moisture-proof layer (201) arranged inside the inner part of the insulation sleeve (2); a multi-layer insulation layer (202) is arranged in the middle of the inner part of the insulation sleeve (2); and an insulation filling (4) is arranged between the insulation sleeve (2) and the cable core (3).
2. A bundled aerial insulated cable according to claim 1, characterized in that: The protection assembly comprises a heat-resistant layer (101) arranged inside the inner part of the outer protective sleeve (1); a shielding layer (102) is arranged in the middle of the inner part of the outer protective sleeve (1); an anti-abrasion layer (104) is arranged on the outer side of the inner part of the outer protective sleeve (1); and an anti-corrosion layer (103) is arranged between the anti-abrasion layer (104) and the anti-corrosion layer (103).
3. A bundled aerial insulated cable according to claim 1, characterized in that: An outer protective sleeve (9) is arranged on the outer wall of the outer protective sleeve (1); an inner protective sleeve (203) is arranged on the outer side of the inner part of the insulation sleeve (2); a tensile-resistant protective sleeve (7) is attached to the outer wall of the insulation sleeve (2); a support plate (6) is fixedly connected to the inner wall of the tensile-resistant protective sleeve (7); and an elastic member (8) is arranged between the tensile-resistant protective sleeve (7) and the outer protective sleeve (1).
4. A bundled aerial insulated cable according to claim 1, characterized in that: The insulation filling (4) is made of PE foam material, the multi-layer insulation layer (202) is made of multi-layer insulation rubber, and the insulation filling (4) and the multi-layer insulation layer (202) are used to improve the electrical insulation performance and prevent breakdown.
5. A bundled aerial insulated cable according to claim 1, characterized in that: The moisture-proof layer (201) is made of cross-linked polyethylene material and is used to prevent water from penetrating into the cable.
6. A bundled aerial insulated cable according to claim 2, characterized in that: The heat-resistant layer (101) is made of mica tape and is used to maintain the insulation performance of the cable.
7. A bundled aerial insulated cable according to claim 2, characterized in that: The shielding layer (102) is formed by braiding copper wire and is used to provide electromagnetic shielding and mechanical protection.
8. A bundled aerial insulated cable according to claim 2, characterized in that: The anti-corrosion layer (103) is made of polyvinyl chloride, and the anti-abrasion layer (104) is made of nylon, which are used to protect the cable.