Double-layer insulated high-safety environment-friendly power cable

Abstract

The utility model discloses a double-layer insulating high-safety environment-friendly power cable, which relates to the technical field of environment-friendly power cables and comprises tinned copper wire conductors, a filling layer and an insulating layer body, the insulating layer body is arranged outside the tinned copper wire conductors, and the filling layer is filled in the insulating layer body. According to the double-layer insulation high-safety environment-friendly power cable, the insulation sleeve can separate the inner core and effectively support the inner core, good supporting and anti-pulling effects are achieved while insulation is achieved, a reserved groove is formed in the outer side of the insulation sleeve, space is provided for deformation of the insulation sleeve when the insulation sleeve is inserted, and the protection layer and the insulation sleeve are used in cooperation, so that the protection effect is good. According to the double-layer insulation high-safety environment-friendly power cable, the durability and the anti-deformation effect of the power cable are enhanced, so that the problems that the anti-extrusion effect is poor and the good insulation effect cannot be achieved due to the fact that the insulating layer on the outer side of the cable mostly adopts a direct sleeving mode to protect the internal wires are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmentally friendly power cables, in particular to a double-layer insulated high-safety environmentally friendly power cable. Background Art

[0002] Environmentally friendly power cables refer to wires and cables that do not contain heavy metals such as lead, cadmium, hexavalent chromium, and mercury, and do not contain brominated flame retardants. They do not produce harmful halogen gases and corrosive gases when burned, and the amount of smoke produced is also small, which will not cause soil pollution. Environmentally friendly power cables are widely used in electric power, communications, geographical exploration, automobiles, submarines, industry and other fields.

[0003] When environmentally friendly power cables are in use, multiple cables may be piled up on top of each other. However, multiple cables piled up in the same space will squeeze each other, and the insulation layer on the outside of the cable is mostly directly sheathed to protect the internal wires, which has poor anti-extrusion effect and does not provide good insulation effect. Utility Model Content

[0004] The utility model aims to provide a double-layer insulated high-safety and environmentally friendly power cable to solve the problem that the insulation layer on the outer side of the cable proposed in the above-mentioned background technology mostly adopts a direct sleeve method to protect the internal wires, which has poor anti-extrusion effect and cannot achieve good insulation effect.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a double-layer insulated high-safety and environmentally friendly power cable, comprising a tinned copper wire conductor, a filling layer and an insulating layer body,

[0006] An insulating layer body is arranged outside the tinned copper wire conductor, a filling layer is filled inside the insulating layer body, a shielding layer is connected to the outer side of the insulating layer body, a braided layer is wrapped outside the shielding layer, and an insulating sleeve is arranged outside the braided layer.

[0007] Preferably, the insulating sleeve has limit grooves and reserved grooves equidistantly arranged inside, the limit grooves and reserved grooves are both arranged in an arc shape, and the insulating sleeve is plugged into the braided layer through the limit grooves.

[0008] Preferably, a plug-in strip is inserted into the limiting groove, two sides of the plug-in strip are respectively connected to the first extension layer and the second extension layer, and the plug-in strip is clamped with the insulating sleeve through the first extension layer and the second extension layer.

[0009] Preferably, the materials used for the insulating layer body, the insulating sleeve, the connector strip, the first extension layer and the second extension layer are all halogen-free, low-smoke, flame-retardant ethylene-propylene insulation materials.

[0010] Preferably, a protective layer is provided on the outside of the insulating sleeve, abutment strips are equidistantly connected inside the protective layer, and the inside of the protective layer is plugged into the reserved groove on the adjacent side through the abutment strips.

[0011] Preferably, through holes are equidistantly provided inside the protective layer, convex strips are provided inside the through holes, one side of the convex strips is connected to the inner wall of the protective layer, and the protective layer, the abutting strips and the convex strips are made of TPU polyurethane.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the double-layer insulated high-safety and environmentally friendly power cable, the insulating sleeve can separate the inner core and effectively support it, and has good support and anti-pull effects while insulating. The reserved groove on the outside of the insulating sleeve provides space for the deformation of the insulating sleeve during insertion. The protective layer is used in conjunction with the insulating sleeve to enhance the durability and anti-deformation effect of the power cable, and solves the problem that the insulating layer on the outside of the cable is mostly protected by directly sheathing the internal wires, which has poor anti-extrusion effect and does not have a good insulation effect.

[0013] 1. In order to avoid the poor anti-extrusion effect of the direct sheathing method of the insulating layer to protect the internal wire, the double-layer insulated high-safety and environmentally friendly power cable first sheathes the insulating layer body on the outside of the tinned copper wire conductor, and then plugs the inner core sheathed with the insulating layer body, the shielding layer and the braided layer into the limiting groove inside the insulating sheath. The plug-in strip is used to plug the first extension layer and the second extension layer into the reserved part of the limiting groove to limit the position of the inner core. The double-layer insulated high-safety and environmentally friendly power cable is provided with double-layer insulation, which has good support and anti-pulling effects while being insulated, thereby improving safety during use;

[0014] 2. In order to improve the protective effect of the double-layer insulated high-safety and environmentally friendly power cable, the protective layer adopts abutment strips and reserved grooves for plugging, so as to avoid the plug-in strips from falling off and the inner core from loosening during the pulling of the power cable. At the same time, through holes are opened inside the protective layer, so that the power cable has a certain deformation effect, and the anti-extrusion and anti-deformation effects of the power cable are enhanced. Raised strips are arranged inside the through holes to enhance the thickness of the protective layer. The protective layer of the double-layer insulated high-safety and environmentally friendly power cable is used in combination with the insulating sleeve to enhance the durability and anti-deformation effect of the power cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main cross-sectional structure of the power cable of the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of the tinned copper wire conductor of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the insulating sleeve of the utility model;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the protective layer of the utility model.

[0019] In the figure: 1. tinned copper wire conductor; 101. filling layer; 102. insulation layer body; 103. shielding layer; 104. braided layer; 4. insulation sleeve; 401. limiting groove; 402. plug-in strip; 403. first extension layer; 404. second extension layer; 405. reserved groove; 5. protective layer; 501. abutment strip; 502. through hole; 503. convex strip. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a technical solution: a double-layer insulated high-safety and environmentally friendly power cable, comprising a tinned copper wire conductor 1, a filling layer 101 and an insulating layer body 102,

[0022] An insulating layer body 102 is arranged on the outside of the tinned copper wire conductor 1, and a filling layer 101 is filled inside the insulating layer body 102. A shielding layer 103 is connected to the outside of the insulating layer body 102, and a braided layer 104 is wrapped on the outside of the shielding layer 103. An insulating sleeve 4 is arranged on the outside of the braided layer 104, and a limiting groove 401 and a reserved groove 405 are equidistantly arranged inside the insulating sleeve 4. The limiting groove 401 and the reserved groove 405 are both arranged in an arc shape, and the insulating sleeve 4 is plugged into the braided layer 104 through the limiting groove 401;

[0023] A plug-in strip 402 is plugged into the limiting groove 401, and the two sides of the plug-in strip 402 are respectively connected to the first extension layer 403 and the second extension layer 404. The plug-in strip 402 is clamped with the insulating sleeve 4 through the first extension layer 403 and the second extension layer 404. The materials used for the insulating layer body 102, the insulating sleeve 4, the plug-in strip 402, the first extension layer 403 and the second extension layer 404 are all halogen-free low-smoke flame-retardant ethylene-propylene insulating material.

[0024] During specific implementation, in order to avoid the insulation layer being directly sheathed to protect the internal wires, which has poor anti-extrusion effect, the insulation layer body 102 is first sheathed on the outside of the tinned copper wire conductor 1, and then the inner core sheathed with the insulation layer body 102, the shielding layer 103 and the braided layer 104 is plugged into the limiting groove 401 inside the insulation sleeve 4, and the plug-in strip 402 is used to plug into the reserved part of the limiting groove 401 through the first extension layer 403 and the second extension layer 404 to limit the position of the inner core. At this time, the insulation sleeve 4 can separate the inner core and effectively support it. The reserved groove 405 opened on the outside of the insulation sleeve 4 provides space for the deformation of the insulation sleeve 4 during insertion, which is convenient for the insertion and limiting of the inner core. At the same time, the halogen-free, low-smoke, flame-retardant ethylene-propylene insulation material is made of high insulation, oil resistance, corrosion resistance and flame retardancy. The double-layer insulated, high-safety and environmentally friendly power cable is provided with double-layer insulation, which has good support and anti-pulling effects while being insulated.

[0025] See also Figure 3 and Figure 4 It can be seen that a protective layer 5 is provided on the outside of the insulating sleeve 4, and abutment strips 501 are equidistantly connected inside the protective layer 5, and the inside of the protective layer 5 is plugged into the reserved groove 405 on the adjacent side through the abutment strips 501, and through holes 502 are equidistantly opened inside the protective layer 5, and convex strips 503 are provided inside the through holes 502, and one side of the convex strips 503 is connected to the inner wall of the protective layer 5, and the protective layer 5, the abutment strips 501 and the convex strips 503 are made of TPU polyurethane.

[0026] During specific implementation, in order to improve the protective effect of the power cable, the protective layer 5 adopts the abutment strip 501 to be plugged with the reserved groove 405 to prevent the plug-in strip 402 from falling off and the inner core from loosening during the pulling of the power cable. At the same time, a through hole 502 is opened inside the protective layer 5, so that the power cable has a certain deformation effect, and the anti-extrusion and anti-deformation effects of the power cable are enhanced. A convex strip 503 is arranged inside the through hole 502 to enhance the thickness of the protective layer 5 and avoid the friction and rupture of the protective layer 5. At the same time, the protective layer 5 adopts TPU polyurethane with the characteristics of high strength, good wear resistance, oil resistance, water resistance, mildew resistance, good processing performance, etc., which is more durable. The double-layer insulated, high-safety and environmentally friendly power cable, the protective layer 5 is used in conjunction with the insulating sleeve 4 to enhance the durability and anti-deformation effect of the power cable.

[0027] To sum up, when using the double-layer insulated high-safety and environmentally friendly power cable, the insulating layer body 102, the shielding layer 103 and the braided layer 104 are first sequentially sleeved on the outside of the tinned copper wire conductor 1, and the filling layer 101 is filled inside the insulating layer body 102. Then, the inner core sleeved with the insulating layer body 102, the shielding layer 103 and the braided layer 104 is plugged into the limiting groove 401 inside the insulating sleeve 4, and the plug-in strip 402 is used to plug the first extension layer 403 and the second extension layer 404 with the reserved part of the limiting groove 401. Finally, the protective layer 5 is plugged into the reserved groove 405 using the abutment strip 501. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may 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 shall be included in the protection scope of the present invention.

Claims

1. A double-layer insulated high-safety and environmentally friendly power cable, comprising a tinned copper wire conductor (1), a filling layer (101) and an insulating layer body (102), characterized in that: An insulating layer body (102) is arranged on the outside of the tinned copper wire conductor (1), a filling layer (101) is filled inside the insulating layer body (102), a shielding layer (103) is connected to the outside of the insulating layer body (102), a braided layer (104) is wrapped around the outside of the shielding layer (103), and an insulating sleeve (4) is arranged on the outside of the braided layer (104).

2. A double-layer insulated high-safety and environmentally friendly power cable according to claim 1, characterized in that: The insulating sleeve (4) has limit grooves (401) and reserved grooves (405) arranged at equal intervals inside, the limit grooves (401) and the reserved grooves (405) are both arranged in an arc shape, and the insulating sleeve (4) is plugged into the braided layer (104) via the limit grooves (401).

3. A double-layer insulated high-safety and environmentally friendly power cable according to claim 2, characterized in that: A plug-in strip (402) is inserted into the limiting groove (401), two sides of the plug-in strip (402) are respectively connected to a first extension layer (403) and a second extension layer (404), and the plug-in strip (402) is clamped with the insulating sleeve (4) via the first extension layer (403) and the second extension layer (404).

4. A double-layer insulated high-safety and environmentally friendly power cable according to claim 3, characterized in that: The materials used for the insulating layer body (102), the insulating sleeve (4), the plug-in strip (402), the first extension layer (403) and the second extension layer (404) are all halogen-free, low-smoke, flame-retardant ethylene-propylene insulating material.

5. A double-layer insulated high-safety and environmentally friendly power cable according to claim 4, characterized in that: A protective layer (5) is arranged on the outside of the insulating sleeve (4), abutment strips (501) are equidistantly connected inside the protective layer (5), and the inside of the protective layer (5) is plugged into the reserved groove (405) on the adjacent side through the abutment strips (501).

6. A double-layer insulated high-safety and environmentally friendly power cable according to claim 5, characterized in that: The protective layer (5) is provided with through holes (502) at equal intervals, and convex strips (503) are provided inside the through holes (502). One side of the convex strips (503) is connected to the inner wall of the protective layer (5). The protective layer (5), the abutting strips (501) and the convex strips (503) are made of TPU polyurethane.

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