CN213935685U - 35kV and below super soft movable single core cable - Google Patents

Abstract

The utility model discloses a 35kV and following super soft movable single core cable, including the sinle silk conductor, the sinle silk conductor outside is equipped with conductor shield, insulating layer, insulation shield and copper strips in proper order, still includes chlorinated polyethylene rubber oversheath, and chlorinated polyethylene rubber oversheath sets up in the copper strips outside, still is equipped with between copper strips and the chlorinated polyethylene rubber oversheath and does not have the fire-retardant nylon inner sheath of steamed. The utility model discloses well sinle silk conductor chooses for use soft conductor 5 class conductor, can prevent that cable bending radius is too little and receive conductor extrusion deformation, causes the cable to puncture, and the oversheath is made by chlorinated polyethylene rubber, has increased the wearability at removal in-process cable sheathing.

Description

35kV and below super soft movable single core cable

Technical Field

The utility model relates to a cable field especially relates to a 35kV and following super soft movable single core cable.

Background

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. Along with the continuous development of the technology, the equipment is more and more tiny, the space for arranging the cable is narrow, for example, the radius of the cable bending space is very small at the position close to a connecting box and a terminal, the current crosslinked polyethylene insulated power cable conductors of 35kV and below are all compressed by 2 types of circles, an insulating layer is possibly extruded and deformed by the conductors due to the too small radius of the cable bending in the cable running process to cause cable breakdown, the cable is easy to scratch and damage when moving in the narrow space, the cable is often damaged due to the fact that a mouse bites the cable, and the maintenance of the cable is also very inconvenient,

the invention provides a high-voltage cable for a super-soft new energy automobile, which is named as a super-soft high-voltage cable for the new energy automobile in Chinese patent publication No. CN207977139U, published in 2018, 10, 16, and the specific scheme of the application is that the high-voltage cable for the super-soft new energy automobile sequentially comprises a central conductor from inside to outside, and the central conductor comprises a plurality of wire cores; an inner shield layer wrapping the central conductor; the insulating layer wraps the inner shielding layer, and is an ultra-soft irradiation cross-linked elastomer; an outer shielding layer wrapping the insulating layer; the sheath layer wraps the outer shielding layer and is an ultra-soft irradiation cross-linked elastomer, and the ultra-soft irradiation cross-linked elastomer has the defects that the toughness of materials used for the outer sheath is not enough, and the cable is easy to damage when being arranged in a narrow space.

Disclosure of Invention

The utility model aims to solve among the prior art because it is little to lay the space, cable bend radius is little and lead to the operation in-process insulating layer by conductor extrusion deformation problem, provides a 35kV and following super soft portable single core cable.

The utility model discloses the technical scheme who adopts does: the utility model provides a 35kV and following super soft movable single core cable, includes the sinle silk conductor, and the sinle silk conductor outside is equipped with conductor shield, insulating layer, insulating shield and copper strips in proper order, still includes chlorinated polyethylene rubber oversheath, and chlorinated polyethylene rubber oversheath sets up in the copper strips outside, still is equipped with between copper strips and the chlorinated polyethylene rubber oversheath and does not have steamed fire-retardant nylon inner sheath. The chlorinated polyethylene is a saturated high polymer material, is nontoxic and odorless, has excellent weather resistance, ozone resistance, chemical resistance and aging resistance, has excellent oil resistance, flame retardance and coloring performance, has good compatibility with other high polymer materials, has higher decomposition temperature, and increases the wear resistance of the sheath in the moving process. The halogen-free flame-retardant nylon product has excellent flame retardant property, the flame retardant grade reaches UL94V grade, the flame retardant nylon product has low precipitation and anti-dripping performance, high electrical performance, excellent heat resistance, good electrical performance, high impact strength and environmental protection, and can prevent rats from biting to a certain extent.

Preferably, the core conductor is made of a class 5 conductor. In the national standard, the 5-type conductor is a flexible conductor and is used in flexible cables and flexible wires, the 5-type conductor can prevent the cable from being extruded and deformed by the conductor due to too small bending radius of the cable, causing cable breakdown,

preferably, the 5-type conductor is formed by twisting 5-type conductor strands. The bundle twist is composed of a plurality of single wires, and the single wires forming the bundle twist are more and thinner, so that the flexibility of the electric wire cable is increased, and the reliability of circuit communication is improved.

Preferably, a plurality of cavities are arranged in the halogen-free flame-retardant nylon inner sheath, a first baffle and a second baffle are arranged in the cavities, the cavities are divided into a first cavity, a second cavity and a third cavity by the first baffle and the second baffle, rat repelling fillers are filled in the first cavity and the third cavity, and temperature measuring optical fibers are arranged in the second cavity. The rat repelling material is added into the cavity, when a rat bites the outer sheath and bites the cavity, the rat repelling filler is exposed, the rat repelling smell is emitted, and the rat can be repelled for a long time. Because in narrow and small space, the difficult heat dissipation of cable during operation, long-time overload work damages the cable easily, sets up temperature measurement optic fibre and can real-time detection cable temperature, reminds operating personnel to rationally use the cable. Set up the baffle and will drive the mouse filler and separate with temperature measurement optic fibre and can protect temperature measurement optic fibre on the one hand, on the other hand when the mouse tears temperature measurement optic fibre, operating personnel also can receive the damage signal, reminds operating personnel in time to overhaul, the prevention occurence of failure.

Preferably, the gap between the first baffle, the second baffle and the temperature measuring fiber is filled with a fiber filling paste. The optical fiber filling paste can prevent the erosion of moisture in the air and relieve the influence of mechanical force such as vibration, impact, bending and the like of the optical fiber from the outside, and is an important material for influencing the excess length of the optical fiber. The optical fiber is always in a free low-stress state by the optical fiber filling paste, so that the microbending loss of the optical fiber and the corrosion of the optical fiber under the action of stress, moisture and humidity are reduced to the maximum extent.

Preferably, eight cavities are symmetrically arranged and uniformly distributed in the halogen-free flame-retardant nylon inner sheath. The symmetry sets up when can effectively cover whole cable, satisfies the functional requirement of protection against rodents, temperature measurement.

The utility model discloses the beneficial effect who produces is: (1) the core conductor is a soft conductor 5 type conductor, so that the cable can be prevented from being extruded and deformed by the conductor due to too small bending radius of the cable, and the cable can be prevented from being broken down; (2) the halogen-free flame-retardant nylon inner sheath and the rat repelling filler are arranged, so that flame retardance and rat repelling can be realized, and the service life of the cable in a narrow space is prolonged; (3) the outer sheath is made of chlorinated polyethylene rubber, so that the wear resistance of the cable sheath in the moving process is improved; (4) be equipped with temperature measurement optic fibre, real-time transmission cable temperature, the cable damage can remind operating personnel in time to overhaul.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein: 1. the cable comprises a core conductor, 2, a conductor shielding layer, 3, an insulating layer, 4, an insulating shielding layer, 5, a copper strip, 6, a halogen-free flame-retardant nylon inner sheath, 7, a chlorinated polyethylene rubber outer sheath, 8, a cavity, 801, a first cavity, 802, a second cavity, 803, a third cavity, 9, a first baffle, 10, a second baffle, 11 and a temperature measuring optical fiber.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in figure 1, a 35kV and below super soft movable single core cable, including conductor core conductor 1, conductor shielding layer 2, insulating layer 3, insulating shielding layer 4 and copper strips 5 are equipped with in proper order in the conductor core conductor 1 outside, still include chlorinated polyethylene rubber oversheath 7, and chlorinated polyethylene rubber oversheath 7 sets up in the copper strips 5 outside, still is equipped with between copper strips 5 and the chlorinated polyethylene rubber oversheath 7 and has not steamed fire-retardant nylon inner sheath 6. The chlorinated polyethylene is a saturated high polymer material, is nontoxic and odorless, has excellent weather resistance, ozone resistance, chemical resistance and aging resistance, has excellent oil resistance, flame retardance and coloring performance, has good compatibility with other high polymer materials, has higher decomposition temperature, and increases the wear resistance of the sheath in the moving process. The halogen-free flame-retardant nylon product has excellent flame retardant property, the flame retardant grade reaches UL94V grade, the flame retardant nylon product has low precipitation and anti-dripping performance, high electrical performance, excellent heat resistance, good electrical performance, high impact strength and environmental protection, and can prevent rats from biting to a certain extent. The core conductor 1 is formed by twisting 5 types of conductor strands, the 5 types of conductors are flexible conductors and are used in flexible cables and flexible wires, the 5 types of conductors can prevent the cables from being extruded and deformed due to too small bending radius and causing cable breakdown, the strand is formed by a plurality of single wires, the single wires forming the strand are more and thinner, the flexibility of the wire cable is improved, and the reliability of circuit communication is also improved. Eight cavities 8 are symmetrically arranged in the halogen-free flame-retardant nylon inner sheath 6 and are uniformly distributed in the halogen-free flame-retardant nylon inner sheath 6, a first baffle 9 and a second baffle 10 are arranged in the cavities 8, the cavities 8 are divided into a first cavity 801, a second cavity 802 and a third cavity 803 by the first baffle 9 and the second baffle 10, mouse-repelling fillers are filled in the first cavity 801 and the third cavity 803, and temperature-measuring optical fibers 11 are arranged in the second cavity 802. When a mouse bites through the chlorinated polyethylene rubber outer sheath 7 and bites through the cavity 8, the rat repelling filler can be dispersed, and the rat can be dispelled and can emit odor all the time to achieve long-acting rat repelling. Because in narrow and small space, the difficult heat dissipation of cable during operation, long-time overload work damages the cable easily, sets up temperature measurement optic fibre 11 and can real-time detection cable temperature, reminds operating personnel reasonable use cable, and when the mouse torn temperature measurement optic fibre 11, operating personnel also can receive the damage signal, reminds operating personnel in time to overhaul, and the prevention occurence of failure. The gaps among the first baffle 9, the second baffle 10 and the temperature measuring optical fiber 11 are filled with optical fiber filling paste, and the optical fiber filling paste enables the optical fiber to be in a free low-stress state all the time, so that the microbending loss of the optical fiber and the corrosion of the optical fiber under the action of stress, moisture and humidity are reduced to the maximum extent.

Claims (6)

1. The utility model provides a 35kV and following super soft movable single core cable, includes sinle silk conductor (1), sinle silk conductor (1) outside is equipped with conductor shield (2), insulating layer (3), insulation shield (4) and copper strips (5) in proper order, its characterized in that still includes chlorinated polyethylene rubber oversheath (7), and chlorinated polyethylene rubber oversheath (7) set up in copper strips (5) outside, still is equipped with between copper strips (5) and chlorinated polyethylene rubber oversheath (7) and does not have steamed fire-retardant nylon inner sheath (6).

2. The 35kV and below ultra-soft movable single-core cable is characterized in that the core conductor (1) is made of 5-type conductors.

3. The 35kV and below ultra-soft movable single core cable according to claim 2, wherein the 5-type conductor is formed by stranding 5-type conductor bundle wires.

4. The 35kV and below ultra-soft movable single-core cable according to claim 1, wherein a plurality of cavities (8) are arranged in the halogen-free flame-retardant nylon inner sheath (6), a first baffle (9) and a second baffle (10) are arranged in the cavities (8), the cavities (8) are divided into a first cavity (801), a second cavity (802) and a third cavity (803) by the first baffle (9) and the second baffle (10), mouse-repelling fillers are filled in the first cavity (801) and the third cavity (803), and a temperature-measuring optical fiber (11) is arranged in the second cavity (802).

5. The 35kV and below ultra-soft movable single core cable is characterized in that optical fiber filling paste is filled in gaps among the first baffle plate (9), the second baffle plate (10) and the temperature measuring optical fiber (11).

6. The 35kV and below ultra-soft movable single core cable is characterized in that eight cavities (8) are symmetrically arranged and uniformly distributed in the halogen-free flame retardant nylon inner sheath (6).

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