CN215577895U

CN215577895U - Crosslinked polyethylene insulation electrified railway power cable

Info

Publication number: CN215577895U
Application number: CN202122090581.0U
Authority: CN
Inventors: 李银祥
Original assignee: Guoyou Cable Group Co Ltd
Current assignee: Guoyou Cable Group Co Ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-01-18
Anticipated expiration: 2031-09-01

Abstract

The utility model provides a cross-linked polyethylene insulated electrified railway power cable which comprises a conductor, wherein a conductor shielding layer is arranged outside the conductor, an insulating layer is coated outside the conductor shielding layer, an insulating shielding layer is arranged outside the insulating layer, a metal shielding layer is arranged on the insulating shielding layer, a wrapping tape layer is wrapped outside the metal shielding layer, an outer sheath is arranged outside the wrapping tape layer and consists of an outer protective layer and an inner protective layer, an annular cavity is formed between the outer protective layer and the inner protective layer, a reinforcing component and a filling cavity are arranged in the annular cavity, the reinforcing component comprises an inner reinforcing core, an outer reinforcing core, an inner elastic element and an outer elastic element, the inner reinforcing core is embedded in a cavity I on the outer side wall of the inner protective layer, the outer reinforcing core is embedded in a cavity II on the inner side wall of the outer protective layer, and the inner elastic element and the outer elastic element are positioned between the inner reinforcing core and the outer reinforcing core, the filling cavity is filled with the rat-proof and ant-proof ointment.

Description

Crosslinked polyethylene insulation electrified railway power cable

Technical Field

The utility model relates to the technical field of cables and wires, in particular to a crosslinked polyethylene insulated electrified railway power cable.

Background

Cable is a generic term for optical cables, electrical cables, and the like. The cable has many purposes, is mainly used for controlling installation, connecting equipment, transmitting power and other multiple functions, and is a common and indispensable object in daily life.

However, the existing cable has the following problems:

1. the existing cable has single use performance, is inconvenient to retard flame in case of fire, and is easy to be gnawed by rats in the use process to cause power failure and the like, so that the service life of the cable is shortened;

2. the existing cable is poor in compression resistance effect, prone to breakage and damage after being extruded and inconvenient to use in practice.

Therefore, the utility model provides a crosslinked polyethylene insulated electric railway power cable to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a crosslinked polyethylene insulated electrified railway power cable.

In order to solve the technical problems, the utility model provides the following technical scheme: a cross-linked polyethylene insulated electric railway power cable comprises a conductor, wherein a conductor shielding layer is arranged outside the conductor, an insulating layer is coated outside the conductor shielding layer, an insulating shielding layer is arranged outside the insulating layer, a metal shielding layer is arranged on the insulating shielding layer, a wrapping tape layer is wrapped outside the metal shielding layer, an outer sheath is arranged outside the wrapping tape layer and consists of an outer protective layer and an inner protective layer, an annular cavity is formed between the outer protective layer and the inner protective layer, a reinforcing component and a filling cavity are arranged in the annular cavity, the reinforcing component comprises an inner reinforcing core, an outer reinforcing core, an inner elastic part and an outer elastic part, the inner reinforcing core is embedded in a cavity I on the outer side wall of the inner protective layer, the outer reinforcing core is embedded in a cavity II on the inner side wall of the outer protective layer, and the inner elastic part and the outer elastic part are positioned between the inner reinforcing core and the outer reinforcing core, the filling cavity is filled with the rat-proof and ant-proof ointment.

As a preferable technical scheme, the inner elastic part is of a crescent structure, the inner side and the outer side of the inner elastic part are respectively provided with a first arc-shaped concave edge and an arc-shaped convex edge, the outer elastic part is of an I-shaped structure, and the inner side and the outer side of the outer elastic part are respectively provided with a second arc-shaped concave edge and a third arc-shaped concave edge.

As a preferred technical scheme, the first arc-shaped concave edge is attached to the periphery of the inner reinforcing core, the second arc-shaped concave edge is attached to the arc-shaped convex edge, and the third arc-shaped concave edge is attached to the periphery of the outer reinforcing core.

As a preferable technical solution of the present invention, the inner elastic member and the outer elastic member are both filled with a flame retardant filler.

As a preferable technical scheme, a plurality of wear-resistant bulges are uniformly arranged on the periphery of the outer sheath.

The utility model has the following beneficial effects: when the cross-linked polyethylene insulated electrified railway power cable is used, the inner elastic piece and the outer elastic piece are matched, so that the compression resistance of the cable is improved, the phenomena of breakage and damage of the cable after extrusion can be effectively avoided, and the service life of the cable is prolonged; the rat and ant prevention ointment can effectively prevent rats from gnawing the inside of the cable; the flame retardant performance of the cable is improved by the flame retardant filler filled in the inner elastic part and the outer elastic part.

The utility model will be explained in more detail below with reference to the drawings and examples.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the outer sheath of the present invention;

FIG. 3 is a schematic view of a reinforcement assembly of the present invention;

FIG. 4 is an enlarged view of a in FIG. 2 according to the present invention

Reference numbers in the figures: 1. a conductor; 2. a conductor shield layer; 3. an insulating layer; 4. an insulating shield layer; 5. a metal shielding layer; 6. a belting layer; 7. an outer sheath; 701. an outer protective layer; 702. an inner protective layer; 703. an inner reinforcement core; 704. an outer reinforcement core; 705. an inner elastic member; 706. an outer elastic member; 707. a first concave cavity; 708. a second concave cavity; 709. rat and ant prevention ointment; 710. a flame retardant filler; 8. wear-resisting protruding.

Detailed Description

The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b): as shown in fig. 1-4, the cross-linked polyethylene insulated electric railway power cable provided by the present invention includes a conductor 1, a conductor shielding layer 2 is arranged outside the conductor 1, an insulating layer 3 is coated outside the conductor shielding layer 2, an insulating shielding layer 4 is arranged outside the insulating layer 3, a metal shielding layer 5 is arranged on the insulating shielding layer 4, a wrapping tape layer 6 is wrapped outside the metal shielding layer 5, an outer sheath 7 is arranged outside the wrapping tape layer 6, the outer sheath 7 is composed of an outer protection layer 701 and an inner protection layer 702, an annular cavity is formed between the outer protection layer 701 and the inner protection layer 702, a reinforcing component and a filling cavity are arranged in the annular cavity, the reinforcing component includes an inner reinforcing core 703, an outer reinforcing core 704, an inner elastic member 705 and an outer elastic member 706, the inner reinforcing core 703 is embedded in a first cavity 707 on the outer side wall of the inner protection layer 702, the outer reinforcing core 704 is embedded in a second cavity 708 on the inner side wall 701 of the outer protection layer, interior elastic component 705 and outer elastic component 706 are located between interior reinforcement core 703 and the outer reinforcement core 704, fill in the appearance chamber of filling and hold and fill rat-proof ant ointment 709, during the use, use through the cooperation between interior elastic component 705 and the outer elastic component 706, improved the compressive property of cable, can effectively avoid the cable to receive the fracture and damage phenomenon after the extrusion to appear, improved the life of this cable, set up rat-proof ant ointment 709 and can effectively prevent the mouse to gnaw and eat to cable inside.

Further, the inner elastic member 705 is of a crescent structure, the inner side and the outer side of the inner elastic member are respectively provided with a first arc-shaped concave edge and a first arc-shaped convex edge, the outer elastic member 706 is of an I-shaped structure, and the inner side and the outer side of the outer elastic member are respectively provided with a second arc-shaped concave edge and a third arc-shaped concave edge.

Further, an arc concave side is laminated with the periphery of interior reinforcement core 703 mutually, the arc chimb is laminated with No. two arc concave sides mutually, No. three arc concave sides are laminated with the periphery of outer reinforcement core 704 mutually, are favorable to improving the combination stability of strengthening the subassembly.

Further, the flame-retardant filler 710 is filled in the inner elastic member 705 and the outer elastic member 706, so that the flame-retardant performance of the cable is improved.

Furthermore, a plurality of wear-resistant protrusions 8 are uniformly arranged on the periphery of the outer sheath 7, so that the wear resistance of the cable is improved.

The working principle is as follows:

during the use, through the cooperation between interior elastic component 705 and the outer elastic component 706 use, improved the compressive property of cable, can effectively avoid the cable to receive the breakage and damage phenomenon appear after the extrusion, improved the life of this cable, set up rat proof ant ointment 709 and can effectively prevent the mouse to gnaw and eat to cable inside, through the fire-retardant filler 710 of the inside packing of interior elastic component 705 and outer elastic component 706, improved the fire behaviour of this cable.

The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims

1. The electric railway power cable is characterized by comprising a conductor (1), wherein a conductor shielding layer (2) is arranged outside the conductor (1), an insulating layer (3) is coated outside the conductor shielding layer (2), an insulating shielding layer (4) is arranged outside the insulating layer (3), a metal shielding layer (5) is arranged on the insulating shielding layer (4), a wrapping tape layer (6) is wound outside the metal shielding layer (5), an outer sheath (7) is arranged outside the wrapping tape layer (6), the outer sheath (7) consists of an outer protective layer (701) and an inner protective layer (702), an annular cavity is formed between the outer protective layer (701) and the inner protective layer (702), a reinforcing component and a filling cavity are arranged in the annular cavity, the reinforcing component comprises an inner reinforcing core (703), an outer reinforcing core (704), an inner elastic piece (705) and an outer elastic piece (706), the inner reinforcing core (703) is embedded in a first concave cavity (707) on the outer side wall of the inner protective layer (702), the outer reinforcing core (704) is embedded in a second concave cavity (708) on the inner side wall of the outer protective layer (701), the inner elastic piece (705) and the outer elastic piece (706) are located between the inner reinforcing core (703) and the outer reinforcing core (704), and the filling cavity is filled with rat and ant prevention ointment (709).

2. The power cable as claimed in claim 1, wherein the inner elastic member (705) has a crescent-shaped structure, and has a first arc-shaped concave edge and a first arc-shaped convex edge on the inner side and the outer side, respectively, and the outer elastic member (706) has an I-shaped structure, and has a second arc-shaped concave edge and a third arc-shaped concave edge on the inner side and the outer side, respectively.

3. The insulated electrified railroad power cable of claim 2, wherein the first curved concave edge is attached to the outer periphery of the inner reinforcing core (703), the second curved concave edge is attached to the curved convex edge, and the third curved concave edge is attached to the outer periphery of the outer reinforcing core (704).

4. The insulated electrified railroad power cable of claim 1, wherein the inner elastomeric member (705) and the outer elastomeric member (706) are filled with a flame retardant filler (710).

5. The insulated electrified railroad power cable of claim 1, wherein the outer sheath (7) has a plurality of wear-resistant protrusions (8) uniformly disposed on the outer circumference thereof.