Lightning protection overhead insulated cable

Abstract

The utility model discloses a lightning protection overhead insulation cable, comprising a cable main body, the cable main body comprises a cable base layer and a metal protection layer, the outer side of the cable base layer is provided with a fireproof layer, the outer side of the fireproof layer is provided with an insulation layer, the top of the metal protection layer is provided with a material guide plate, and the material guide plate is in an inverted V shape. The metal protection layer is installed on the outer side of the insulating layer, the top face of the material guide plate is designed to be polished, a wire is arranged at the bottom of the metal protection layer, and the metal protection layer is connected with the ground through the wire; according to the utility model, the top of the cable main body is provided with the material guide plate, the material guide plate is designed to be inverted V-shaped and the surface is polished, so that the contact area between the top of the cable and snow becomes smaller, thereby avoiding the problem of cable damage caused by accumulated snow on the top of the cable; according to the utility model, the fireproof layer, the insulating layer, the anticorrosive layer, the metal protection layer and other components are arranged on the outer side of the cable base layer, so that the use performance of the cable is greatly improved.

Description

Technical Field

[0001] This utility model relates to an insulated cable, specifically a lightning-protected overhead insulated cable. Background Technology

[0002] Overhead cables are overhead conductors with insulation and protective sheaths, manufactured using a process similar to that of cross-linked cables. They represent a new power transmission method between overhead conductors and underground cables. Overhead cables are all single-core and, based on their structure, can be classified into hard aluminum wire structure, hard-drawn copper wire structure, aluminum alloy wire structure, steel core or aluminum alloy core supported structure, and self-supporting three-core composite structure, etc.

[0003] Currently, as shown in the attached document Figure 5 As shown, existing overhead cables are prone to snow accumulation on their surface in winter, which can damage the lines. Therefore, this application proposes a lightning-protected overhead insulated cable to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a lightning-protected overhead insulated cable to solve the problem mentioned in the background art that existing overhead cables are prone to snow accumulation on their surface in winter, which can damage the lines.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A lightning-protected overhead insulated cable includes a cable body, which comprises a cable base layer, an outer sheath, and a metal protective layer. A fireproof layer is provided on the outside of the cable base layer, and an insulation layer is provided on the outside of the fireproof layer. A guide plate is provided on the top of the outer sheath. The guide plate is inverted V-shaped. A partition is fixedly installed inside the guide plate, and an insert is fixedly installed at the bottom of the partition. A slot is fixedly installed on the top of the outer sheath. The insert is inserted into the interior of the insert. The insert has symmetrically opened mounting grooves. A spring is fixedly installed inside the mounting groove. A locking rod is fixedly installed at one end of the spring, and one end of the locking rod extends through both the mounting groove and the slot.

[0007] As a further improvement of this invention, the metal protective layer is installed on the outside of the insulating layer.

[0008] As a further improvement of this utility model, an anti-corrosion layer is provided between the insulating layer and the metal protective layer.

[0009] As a further improvement of this utility model, the top surface of the guide plate is polished.

[0010] As a further improvement of this utility model: a wire is provided at the bottom of the metal protective layer, and the metal protective layer is connected to the ground through the wire.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. This utility model installs a guide plate on the top of the cable body. The guide plate has an inverted V-shaped design and a polished surface, which reduces the contact area between the top of the cable and snow, thereby avoiding the problem of snow accumulation on the top of the cable causing cable damage.

[0013] 2. This utility model greatly improves the performance of the cable by setting components such as a fireproof layer, an insulation layer, an anti-corrosion layer and a metal protective layer on the outside of the cable base layer. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is the front view of this utility model.

[0016] Figure 3 For this utility model Figure 1 Enlarged view of point A in the middle.

[0017] Figure 4 This is a partial sectional view of the present invention.

[0018] Figure 5 The image shown is a physical illustration of the prior art in this utility model.

[0019] 1. Metal protective layer; 2. Cable body; 3. Guide plate; 4. Cable base layer; 5. Fireproof layer; 6. Anti-corrosion layer; 7. Insulation layer; 8. Conductor; 9. Outer sheath; 10. Clamping rod; 11. Spring; 12. Mounting groove; 13. Insert block; 14. Slot. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4In this embodiment of the utility model, a lightning protection overhead insulated cable includes a cable body 2, which includes a cable base layer 4, an outer sheath 9, and a metal protective layer 1. A fireproof layer 5 is provided on the outside of the cable base layer 4, and an insulation layer 7 is provided on the outside of the fireproof layer 5. A guide plate 3 is provided on the top of the outer sheath 9. The guide plate 3 is inverted V-shaped and has a polished top surface. A partition is fixedly installed inside the guide plate 3, and an insert block 13 is fixedly installed at the bottom of the partition. A slot 14 is fixedly installed on the top of the outer sheath 9. The insert block 13 is inserted into the interior of the insert block 14. A mounting groove 12 is symmetrically provided on the insert block 13. A spring 11 is fixedly installed inside the mounting groove 12. A locking rod 10 is fixedly installed at one end of the spring 11. One end of the locking rod 10 passes through both the mounting groove and the slot 14. A through hole adapted to the locking rod 10 is correspondingly provided on the slot 14.

[0022] The metal protective layer 1 is installed on the outside of the insulation layer 7. The metal protective layer 1 enhances the overall tensile and compressive strength of the cable.

[0023] An anti-corrosion layer 6 is provided between the insulation layer 7 and the metal protective layer 1.

[0024] A wire 8 is provided at the bottom of the metal protective layer 1, and the metal protective layer 1 is connected to the ground through the wire 8.

[0025] The working principle of this utility model is as follows:

[0026] In use, this utility model employs a guide plate 3 on the top of the cable body 2. The guide plate 3 has an inverted V-shaped design and a polished surface. When snow falls on the guide plate 3, the contact area between the guide plate and the snow is very small, making it difficult for snow to accumulate on the surface of the guide plate 3, thus preventing damage to the cable caused by snow accumulation. The guide plate 3 is installed by inserting the bottom insert 13 of the guide plate into the slots 14 at both ends of the cable body, causing the locking rod 10 to move to the position corresponding to the through hole. At this time, the locking rod 10 will pop out and pass through the through hole under the action of the spring 11, thereby fixing the guide plate 5 to the cable and securing it to the cable base. The outer side of layer 4 is provided with a fireproof layer 5, an anti-corrosion layer 6, an insulation layer 7, and a metal protective layer 1, which greatly improves the service life and performance of the cable. For example, the fireproof layer 5 is made of halogen-free flame-retardant polyethylene material, which provides the cable with good fire resistance. The anti-corrosion layer 6 is a polyethylene coating layer, which greatly improves the cable's corrosion resistance. The insulation layer 7 is made of PVC plastic material. Finally, the metal protective layer 1 improves the overall tensile and compressive strength of the cable. The metal protective layer 1 is grounded through the conductor 8, which protects the cable's insulation layer 7 and prevents external environmental interference to the cable. At the same time, it can also effectively guide the internal charge of the cable to the ground.

[0027] 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 scope of protection of the present invention.

Claims

1. A lightning-protected overhead insulated cable, comprising a cable body (2), characterized in that: The cable body (2) includes a cable base layer (4), an outer sheath (9) and a metal protective layer (1). A fireproof layer (5) is provided on the outside of the cable base layer (4), and an insulation layer (7) is provided on the outside of the fireproof layer (5). A guide plate (3) is provided on the top of the outer sheath (9). The guide plate (3) is inverted V-shaped. A partition is fixedly installed inside the guide plate (3). A plug (13) is fixedly installed at the bottom of the partition. A slot (14) is fixedly installed on the top of the outer sheath (9). The plug (13) is inserted into the slot (14). A mounting groove (12) is symmetrically opened on the plug (13). A spring (11) is fixedly installed inside the mounting groove (12). A locking rod (10) is fixedly installed at one end of the spring (11). One end of the locking rod (10) passes through both the mounting groove and the slot (14).

2. The lightning protection overhead insulated cable according to claim 1, characterized in that: The metal protective layer (1) is installed on the outside of the insulating layer (7).

3. The lightning protection overhead insulated cable according to claim 1, characterized in that: An anti-corrosion layer (6) is provided between the insulating layer (7) and the metal protective layer (1).

4. The lightning protection overhead insulated cable according to claim 1, characterized in that: The top surface of the guide plate (3) is polished.

5. A lightning-protected overhead insulated cable according to claim 1, characterized in that: The bottom of the metal protective layer (1) is provided with a wire (8), and the metal protective layer (1) is connected to the ground through the wire (8).

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