CN220895240U

CN220895240U - Low-voltage variable-frequency cable

Info

Publication number: CN220895240U
Application number: CN202322362289.9U
Authority: CN
Inventors: 徐磊; 席素玲; 李仲宏; 曾天良; 胡朝孙; 张怀广
Original assignee: Yangzhou Huacheng Cable Co Ltd
Current assignee: Yangzhou Huacheng Cable Co Ltd
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2024-05-03
Anticipated expiration: 2033-08-31

Abstract

The utility model discloses a low-voltage variable frequency cable in the technical field of cables, which comprises a shielding layer; the shielding layer is coated outside the filling; six wire cores are arranged in the filling; an inner sheath is arranged on the outer side of the shielding layer; grooves are uniformly formed in the outer side of the inner sheath in the circumferential direction; an outer sheath is wrapped on the outer side of the inner sheath; through being provided with the recess in the outside of inner sheath, set up on the oversheath with the louvre that link up each other of recess for after the heat transfer that the during operation sinle silk sent the inner sheath, can pass through recess and louvre and outside air heat transfer, improve heat dispersion.

Description

Low-voltage variable-frequency cable

Technical Field

The utility model relates to the technical field of cables, in particular to a low-voltage variable-frequency cable.

Background

The existing low-voltage variable frequency cable is a conventional low-voltage variable frequency cable, the heat dissipation performance is poor, high temperature is generated after the wire core conductor works, heat cannot be dissipated timely, long-term high temperature easily causes ageing and performance degradation of the cable, and therefore the low-voltage variable frequency cable is provided.

Disclosure of utility model

The utility model aims to provide a low-voltage variable frequency cable so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a low-voltage variable frequency cable includes a shielding layer;

The shielding layer is coated outside the filling;

six wire cores are arranged in the filling;

an inner sheath is arranged on the outer side of the shielding layer;

grooves are uniformly formed in the outer side of the inner sheath in the circumferential direction;

An outer sheath is wrapped on the outer side of the inner sheath;

and the outer sheath is uniformly and circumferentially provided with radiating holes, and the radiating holes and the grooves are respectively communicated with each other.

As a preferable scheme of the low-voltage variable frequency cable of the utility model, wherein: the outer side of the inner sheath is uniformly provided with a communicating groove in a circumferential direction, and the communicating groove is of an arc-shaped structure.

As a preferable scheme of the low-voltage variable frequency cable of the utility model, wherein: the communication grooves are respectively communicated with the adjacent grooves.

As a preferable scheme of the low-voltage variable frequency cable of the utility model, wherein: the depth of the groove is five millimeters at zero point.

As a preferable scheme of the low-voltage variable frequency cable of the utility model, wherein: the depth of the communicating groove is zero point two millimeters.

As a preferable scheme of the low-voltage variable frequency cable of the utility model, wherein: the diameter of the radiating hole is three-five millimeters.

Compared with the prior art, the utility model has the beneficial effects that:

1. Through the grooves arranged on the outer side of the inner sheath, the heat dissipation holes communicated with the grooves are formed in the outer sheath, so that heat emitted by the wire core during operation is transferred to the inner sheath and can exchange heat with external air through the grooves and the heat dissipation holes, and the heat dissipation performance is improved;

2. Through setting up the intercommunication groove with adjacent recess intercommunication for the heat of overheated part department on the inner sheath can circulate in other recesses, so that by corresponding louvre heat dissipation.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a low-voltage variable frequency cable according to the present utility model;

FIG. 2 is a schematic cross-sectional view of the whole structure of a low-voltage variable frequency cable according to the present utility model;

Fig. 3 is a schematic view of the inner sheath, the groove and the communicating groove of the low-voltage variable-frequency cable according to the present utility model.

In the figure: 1. a wire core; 2. a shielding layer; 3. filling; 4. an inner sheath; 5. an outer sheath; 6. a heat radiation hole; 7. a groove; 8. and a communication groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As mentioned in the background art, the heat dissipation device aims at the problem of poor heat dissipation performance in the prior art. The utility model provides a low-voltage variable frequency cable.

Example 1

Referring to fig. 1 to 3, a low voltage variable frequency cable includes a shielding layer 2 formed by combining copper mesh braiding and copper strips;

The shielding layer 2 is coated outside the filling 3, and the filling 3 is inorganic mineral refractory filling;

six wire cores 1 are arranged in the filling 3, and the six wire cores 1 are respectively three main wire insulation wires and three zero wire insulation wires;

an inner sheath 4 is arranged on the outer side of the shielding layer 2;

the outer side of the inner sheath 4 is uniformly provided with grooves 7 in the circumferential direction;

The outer side of the inner sheath 4 is wrapped with an outer sheath 5;

The heat dissipation holes 6 are uniformly formed in the circumferential direction on the outer sheath 5, the heat dissipation holes 6 are respectively communicated with the grooves 7, and after heat emitted by the wire core 1 is transferred to the inner sheath 4 during operation, heat can be exchanged with external air through the grooves 7 and the heat dissipation holes 6, compared with the prior art, the heat dissipation is carried out only through the contact of the outer sheath 5 and the external air, and the heat dissipation performance is greatly improved.

Wherein the depth of the groove 7 is zero point five millimeters, and the diameter of the heat dissipation hole 6 is zero point three five millimeters.

Example 2

Referring to fig. 1 to 3, when in use, the serious situation of scalding of a certain part of the inner sheath 4 occurs easily, and then the heat dissipation effect is not good only through the side groove 7 and the heat dissipation hole 6, so that the communication groove 8 can be evenly annularly arranged on the outer side of the inner sheath 4, the communication groove 8 is in an arc structure, the communication grooves 8 are respectively communicated with the adjacent grooves 7, the depth of the communication groove 8 is two millimeters, and thus the grooves 7 can be communicated with each other through the communication groove 8, and then the heat of the overheat part on the inner sheath 4 can flow into other grooves 7 under the action of air circulation, so that the heat can be dissipated and dissipated by the corresponding heat dissipation holes 6 on the other grooves 7.

The rest of the structure is the same as in embodiment 1.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a low pressure variable frequency cable which characterized in that: comprising the steps of (a) a step of,

A shielding layer (2);

The shielding layer (2) is coated outside the filling (3);

six wire cores (1) are arranged in the filling (3);

An inner sheath (4) is arranged on the outer side of the shielding layer (2);

Grooves (7) are uniformly formed in the outer side of the inner sheath (4) in the circumferential direction;

an outer sheath (5) is wrapped on the outer side of the inner sheath (4);

And the outer sheath (5) is uniformly and annularly provided with radiating holes (6), and the radiating holes (6) and the grooves (7) are respectively communicated with each other.

2. A low voltage variable frequency cable according to claim 1, characterized in that: the outer side of the inner sheath (4) is uniformly provided with a communication groove (8) in a circumferential direction, and the communication groove (8) is of an arc-shaped structure.

3. A low voltage variable frequency cable according to claim 2, characterized in that: the communication grooves (8) are respectively communicated with the adjacent grooves (7).

4. A low voltage variable frequency cable according to claim 2, characterized in that: the depth of the groove (7) is five millimeters at zero point.

5. The low voltage variable frequency cable of claim 4, wherein: the depth of the communication groove (8) is zero point two millimeters.

6. A low voltage variable frequency cable according to claim 1, characterized in that: the diameter of the radiating hole (6) is three-five millimeters.