Paper covered wire with high tensile strength

Abstract

The utility model discloses a paper covered wire with high tensile strength, which relates to the technical field of paper covered wires, and comprises a copper wire inner core and a polyvinyl chloride particle filling layer, the outer wall of the copper wire inner core is provided with a smooth tin coating, and the outer wall of an anti-oxidation wax film layer is fixedly connected with a rubber insulating layer. And the polyvinyl chloride particle filling layer is arranged on the outer wall of the rubber insulating layer. According to the paper covered wire with high tensile strength, the seven copper wire inner cores are spirally distributed, so that the seven copper wire inner cores can be mutually encircled more tightly, gaps among the seven copper wire inner cores are filled with the polyvinyl chloride particle filling layer, the overall tensile strength can be improved, the insulating performance can be improved, current can be effectively isolated, current leakage or electric leakage can be prevented, and the service life of the paper covered wire is prolonged. The first tensile layer is matched with the second tensile layer, the outer wall of the first tensile layer is concaved into a plurality of semicircles, and the outer wall of the second tensile layer is convexly provided with a plurality of corresponding semicircles, so that the contact surface area of the first tensile layer and the second tensile layer is increased, and the overall tensile strength is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper-covered wires, in particular to a paper-covered wire with high tensile strength. Background Art

[0002] Paper covered wire refers to wire whose insulation layer is wrapped with cable paper. The insulation of paper covered wire has at least 3 layers of overlapping paper tapes. When there are more than 3 layers, the innermost and outermost layers should be overlapped and wrapped, and the rest can be wrapped with gaps. The gap should not exceed 2mm. When the width of the paper tape is 9.5mm or above, the gap should not exceed 3mm.

[0003] The existing paper covered wire structure is relatively simple, all of which are copper cores wrapped with protective layers such as paper tubes. The tensile strength is not high enough, and its antioxidant, waterproof, fireproof and wear-resistant properties are relatively insufficient, which will affect the service life of the paper covered wire.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a paper-covered wire with high tensile strength is proposed. Utility Model Content

[0005] The utility model aims to provide a paper-covered wire with high tensile strength to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a paper covered wire with high tensile strength, comprising a copper wire inner core and a polyvinyl chloride particle filling layer, the outer wall of the copper wire inner core is provided with a smooth tin-plated layer, and the outer wall of the smooth tin-plated layer is fixedly connected with an anti-oxidation wax film layer, the outer wall of the anti-oxidation wax film layer is fixedly connected with a rubber insulating layer, and the cross-sections of the smooth tin-plated layer, the anti-oxidation wax film layer and the rubber insulating layer are all annular, the polyvinyl chloride particle filling layer is arranged on the outer wall of the rubber insulating layer, and the outer wall of the polyvinyl chloride particle filling layer is fixed with a first tensile layer.

[0007] Furthermore, there are seven copper wire inner cores, and the seven copper wire inner cores are all distributed in a spiral shape.

[0008] Furthermore, the vertical center axis of the smooth tin-plated layer is consistent with the vertical center axes of the anti-oxidation wax film layer and the rubber insulation layer, and the cross-section of the copper wire inner core is circular.

[0009] Furthermore, the radius of the smooth tin-plated layer is smaller than the radius of the anti-oxidation wax film layer, and the radius of the anti-oxidation wax film layer is smaller than the radius of the rubber insulating layer.

[0010] Furthermore, the outer wall of the first anti-tensile layer is provided with a second anti-tensile layer, and the outer wall of the first anti-tensile layer and the inner wall of the second anti-tensile layer are matched.

[0011] Furthermore, the outer wall of the second tensile layer is connected to a black titanium heat-absorbing film layer, and the outer wall of the black titanium heat-absorbing film layer is provided with a polyurethane waterproof layer.

[0012] Furthermore, the outer wall of the polyurethane waterproof layer is connected to the methyl vinyl silicone rubber fireproof layer, and the outer wall of the methyl vinyl silicone rubber fireproof layer is provided with a polyurethane wear-resistant layer.

[0013] Furthermore, the vertical center axis of the black titanium heat absorption film layer is consistent with the vertical center axis of the polyurethane waterproof layer, the methyl vinyl silicone rubber fireproof layer and the polyurethane wear-resistant layer, and the cross-sections of the black titanium heat absorption film layer, the polyurethane waterproof layer, the methyl vinyl silicone rubber fireproof layer and the polyurethane wear-resistant layer are all circular.

[0014] The utility model provides a paper-covered wire with high tensile strength, which has the following beneficial effects:

[0015] 1. The paper-wrapped wire has high tensile strength and seven copper wire cores distributed in a spiral shape, which can make them embrace each other more tightly. The gaps therein are filled with a polyvinyl chloride particle filling layer, which can increase the overall tensile resistance and insulation performance, and can effectively isolate the current to prevent current leakage or leakage.

[0016] 2. The paper-wrapped wire with high tensile strength has a first tensile layer and a second tensile layer that are matched with each other. The outer wall of the first tensile layer is recessed into several semicircles, and the outer wall of the second tensile layer is protruded into several corresponding semicircles, thereby increasing the contact surface area between the first tensile layer and the second tensile layer and increasing the overall tensile strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view structural schematic diagram of a paper-wrapped wire with high tensile strength according to the utility model;

[0018] Figure 2 The utility model is a paper-wrapped wire with high tensile strength Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 3 The utility model is a three-dimensional structural schematic diagram of a copper wire inner core of a paper-covered wire with high tensile strength.

[0020] In the figure: 1. Copper wire inner core; 2. Smooth tin-plated layer; 3. Anti-oxidation wax film layer; 4. Rubber insulation layer; 5. Polyvinyl chloride particle filling layer; 6. First tensile layer; 7. Second tensile layer; 8. Black titanium heat-absorbing film layer; 9. Polyurethane waterproof layer; 10. Methyl vinyl silicone rubber fireproof layer; 11. Polyurethane wear-resistant layer. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0022] like Figure 1-Figure 3 As shown, a paper-wrapped wire with high tensile strength comprises a copper wire inner core 1 and a polyvinyl chloride particle filling layer 5, the outer wall of the copper wire inner core 1 is provided with a smooth tin-plated layer 2, and the outer wall of the smooth tin-plated layer 2 is fixedly connected with an anti-oxidation wax film layer 3, the outer wall of the anti-oxidation wax film layer 3 is fixedly connected with a rubber insulating layer 4, and the cross-sections of the smooth tin-plated layer 2, the anti-oxidation wax film layer 3 and the rubber insulating layer 4 are all in annular shape, the polyvinyl chloride particle filling layer 5 is arranged on the outer wall of the rubber insulating layer 4, and the outer wall of the polyvinyl chloride particle filling layer 5 is fixed with a first tensile layer 6, seven copper wire inner cores 1 are provided, and the seven copper wire inner cores 1 are all distributed in a spiral shape, the vertical central axis of the smooth tin-plated layer 2 is consistent with the vertical central axis of the anti-oxidation wax film layer 3 and the rubber insulating layer 4, the cross-section of the copper wire inner core 1 is circular, the radius of the smooth tin-plated layer 2 is smaller than the radius of the anti-oxidation wax film layer 3, and the radius of the anti-oxidation wax film layer 3 is smaller than the radius of the rubber insulating layer 4;

[0023] The specific operation is as follows: the smooth tin-plated layer 2 wrapped around the inner core 1 of the copper wire can make the surface of the copper wire smoother, improve its conductivity, and prevent the copper wire from oxidation and corrosion. The anti-oxidation wax film layer 3 wrapped around the outer wall of the smooth tin-plated layer 2 can form a physical barrier on the surface of the smooth tin-plated layer 2 to block the contact between air and copper, play a protective role, and prevent oxides. The rubber insulating layer 4 wrapped around the outer wall of the anti-oxidation wax film layer 3 is used for insulation;

[0024] The seven copper wire inner cores 1 are distributed in a spiral shape, so that they can be more closely embraced with each other. The gaps therein are filled with a polyvinyl chloride particle filling layer 5, which can increase the overall tensile strength and insulation performance, and can effectively isolate the current to prevent current leakage or leakage;

[0025] like Figure 1-Figure 3 As shown, the outer wall of the first tensile layer 6 is provided with a second tensile layer 7, and the outer wall of the first tensile layer 6 is adapted to the inner wall of the second tensile layer 7, the outer wall of the second tensile layer 7 is connected with a black titanium heat-absorbing film layer 8, and the outer wall of the black titanium heat-absorbing film layer 8 is provided with a polyurethane waterproof layer 9, the outer wall of the polyurethane waterproof layer 9 is connected to a methyl vinyl silicone rubber fireproof layer 10, and the outer wall of the methyl vinyl silicone rubber fireproof layer 10 is provided with a polyurethane wear-resistant layer 11, the vertical center axis of the black titanium heat-absorbing film layer 8 is consistent with the vertical center axes of the polyurethane waterproof layer 9, the methyl vinyl silicone rubber fireproof layer 10 and the polyurethane wear-resistant layer 11, and the cross-sections of the black titanium heat-absorbing film layer 8, the polyurethane waterproof layer 9, the methyl vinyl silicone rubber fireproof layer 10 and the polyurethane wear-resistant layer 11 are all in a circular ring shape;

[0026] The specific operation is as follows: the first tensile layer 6 and the second tensile layer 7 are adapted to each other, the outer wall of the first tensile layer 6 is recessed into several semicircles, and the outer wall of the second tensile layer 7 is protruded into several corresponding semicircles, thereby increasing the contact surface area of ​​the first tensile layer 6 and the second tensile layer 7, and increasing the overall tensile strength;

[0027] The black titanium heat-absorbing film layer 8 is made of black titanium heat-absorbing film material, adopts nano-composite metal high-selective heat-absorbing technology, and has a heat-absorbing function. The material of the polyurethane waterproof layer 9 is soft polyurethane, which has better stability, chemical resistance, and waterproof performance. The material of the methyl vinyl silicone rubber fireproof layer 10 is methyl vinyl silicone rubber, which has a fireproof function. The material of the polyurethane wear-resistant layer 11 is polyurethane, which has a wear-resistant function.

[0028] In summary, if Figure 1-Figure 3 As shown, the paper-wrapped wire with high tensile strength, when used, firstly, the smooth tin-plated layer 2 wrapped around the copper wire inner core 1 can make the copper wire surface smoother, improve its conductivity, and prevent the copper wire from oxidation and corrosion. The anti-oxidation wax film layer 3 wrapped around the outer wall of the smooth tin-plated layer 2 can form a physical barrier on the surface of the smooth tin-plated layer 2 to block the contact between air and copper, play a protective role, and prevent oxides. The rubber insulating layer 4 wrapped around the outer wall of the anti-oxidation wax film layer 3 is used for insulation. The seven copper wire inner cores 1 are distributed in a spiral shape, which can make them embrace each other more closely. The gaps therein are filled with a polyvinyl chloride particle filling layer 5, which can increase the overall tensile resistance and insulation performance, and can effectively isolate the current to prevent current leakage or leakage;

[0029] The first tensile layer 6 and the second tensile layer 7 are adapted to each other, and the outer wall of the first tensile layer 6 is recessed into several semicircles, and the outer wall of the second tensile layer 7 is protruded into several corresponding semicircles, thereby increasing the contact surface area between the first tensile layer 6 and the second tensile layer 7 and increasing the overall tensile strength. The black titanium heat-absorbing film layer 8 is made of black titanium heat-absorbing film material and adopts nano-composite metal highly selective heat-absorbing technology and has the function of heat absorption. The material of the polyurethane waterproof layer 9 is soft polyurethane and has better stability, chemical resistance and waterproof performance. The material of the methyl vinyl silicone rubber fireproof layer 10 is methyl vinyl silicone rubber and has a fireproof function. The material of the polyurethane wear-resistant layer 11 is polyurethane and has a wear-resistant function.

[0030] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A paper-covered wire with high tensile strength, comprising a copper wire inner core (1) and a polyvinyl chloride particle filling layer (5), characterized in that: The outer wall of the copper wire inner core (1) is provided with a smooth tin-plated layer (2), and the outer wall of the smooth tin-plated layer (2) is fixedly connected with an anti-oxidation wax film layer (3), and the outer wall of the anti-oxidation wax film layer (3) is fixedly connected with a rubber insulating layer (4), and the cross-sections of the smooth tin-plated layer (2), the anti-oxidation wax film layer (3) and the rubber insulating layer (4) are all in a circular ring shape, and the polyvinyl chloride particle filling layer (5) is provided on the outer wall of the rubber insulating layer (4), and the outer wall of the polyvinyl chloride particle filling layer (5) is fixed with a first tensile layer (6).

2. A paper-covered wire with high tensile strength according to claim 1, characterized in that: Seven copper wire inner cores (1) are provided, and the seven copper wire inner cores (1) are all distributed in a spiral shape.

3. A paper-covered wire with high tensile strength according to claim 1, characterized in that: The vertical center axis of the smooth tin-plated layer (2) is consistent with the vertical center axes of the anti-oxidation wax film layer (3) and the rubber insulation layer (4), and the cross section of the copper wire inner core (1) is circular.

4. A paper-covered wire with high tensile strength according to claim 1, characterized in that: The radius of the smooth tin-plated layer (2) is smaller than the radius of the anti-oxidation wax film layer (3), and the radius of the anti-oxidation wax film layer (3) is smaller than the radius of the rubber insulating layer (4).

5. The paper-covered wire with high tensile strength according to claim 1, characterized in that: The outer wall of the first anti-tensile layer (6) is provided with a second anti-tensile layer (7), and the outer wall of the first anti-tensile layer (6) and the inner wall of the second anti-tensile layer (7) are matched.

6. A paper-covered wire with high tensile strength according to claim 5, characterized in that: The outer wall of the second tensile layer (7) is connected to a black titanium heat-absorbing film layer (8), and the outer wall of the black titanium heat-absorbing film layer (8) is provided with a polyurethane waterproof layer (9).

7. A paper-covered wire with high tensile strength according to claim 6, characterized in that: The outer wall of the polyurethane waterproof layer (9) is connected to the methyl vinyl silicone rubber fireproof layer (10), and the outer wall of the methyl vinyl silicone rubber fireproof layer (10) is provided with a polyurethane wear-resistant layer (11).

8. A paper-covered wire with high tensile strength according to claim 7, characterized in that: The vertical center axis of the black titanium heat absorbing film layer (8) is consistent with the vertical center axes of the polyurethane waterproof layer (9), the methyl vinyl silicone rubber fireproof layer (10) and the polyurethane wear-resistant layer (11), and the cross-sections of the black titanium heat absorbing film layer (8), the polyurethane waterproof layer (9), the methyl vinyl silicone rubber fireproof layer (10) and the polyurethane wear-resistant layer (11) are all in the shape of a circular ring.

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