CN218384583U

CN218384583U - High-flame-retardant high-voltage variable frequency cable

Info

Publication number: CN218384583U
Application number: CN202221989075.3U
Authority: CN
Inventors: 袁修刚
Original assignee: Sanlin Technology Co ltd
Current assignee: Sanlin Technology Co ltd
Priority date: 2022-07-30
Filing date: 2022-07-30
Publication date: 2023-01-24
Anticipated expiration: 2032-07-30

Abstract

The utility model discloses a high fire-retardant high-voltage variable frequency cable, which comprises a cable main body and a lead cavity, wherein the lead cavity is arranged inside the cable main body, and the cable main body comprises an outer sheath layer, a heat insulation layer, an outer fire-retardant belt, an outer insulating layer, a copper strip shielding layer and an inner insulating layer; the cable comprises cable conductors, wherein the cable conductors are arranged inside a conductor cavity, the cable conductors are provided with six cables, the six cable conductors comprise three main lines and three zero lines, a cable body is arranged inside the cable conductors, and a semi-conductive shielding layer, an inner flame retardant belt and an inner sheath layer are sequentially arranged on the outer side of the cable body from inside to outside. It has realized the fire-retardant high temperature resistance ability of variable frequency cable to solved in the variable frequency cable service environment, often can have high temperature or conflagration breaks out, leads to variable frequency cable to take place to damage, is unfavorable for the problem of the security of variable frequency cable use.

Description

High-flame-retardant high-voltage variable frequency cable

Technical Field

The utility model relates to a frequency conversion cable technical field specifically is a high fire-retardant high voltage frequency conversion cable.

Background

The variable frequency cable is mainly used for connecting a variable frequency power supply and a variable frequency motor, is used for transmitting electric energy, is often used in industries such as papermaking, metallurgy, metal processing, mines, railways, food processing and the like, and has continuously improved performance along with the continuous improvement of the technology;

for example, patent with publication number CN202584903U (high voltage variable frequency power cable): the power cable is equipped with conductor, conductor shielding layer, insulating layer, insulation shield, copper strips shielding layer, packing, non-woven fabrics around package bed course, copper wire weave shielding layer, sheath, and concrete structure is as follows: the outer part of the conductor is a conductor shielding layer, the outer part of the conductor shielding layer is an insulating layer, the outer part of the insulating layer is an insulating shielding layer, and the outer part of the insulating shielding layer is a copper strip shielding layer, so that an insulating shielding wire core is formed; a non-woven fabric lapping cushion layer is arranged outside the insulating shielding wire core, a copper wire braided shielding layer is arranged outside the non-woven fabric lapping cushion layer, and a sheath is arranged outside the copper wire braided shielding layer;

although the prior art is convenient to improve the compression resistance of the variable frequency cable and prolong the service life, the flame retardant capability is poor, and the variable frequency cable is often damaged due to high temperature or fire in the use environment of the variable frequency cable, which is not beneficial to the use safety of the variable frequency cable; therefore, the market urgently needs to develop a high-flame-retardant high-voltage variable frequency cable to help people solve the existing problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high fire-retardant high voltage variable frequency cable to what provide in solving above-mentioned background art often can have high temperature or conflagration to take place in the variable frequency cable service environment, leads to variable frequency cable to take place to damage, is unfavorable for the problem of the security of variable frequency cable use.

In order to achieve the above purpose, the utility model provides a following technical scheme: a high-flame-retardant high-voltage variable frequency cable comprises a cable main body,

the cable comprises a cable main body, a wire cavity and a heat insulation layer, wherein the cable main body is arranged inside the cable main body and comprises an outer sheath layer, a heat insulation layer, an outer flame-retardant belt, an outer insulating layer, a copper strip shielding layer and an inner insulating layer;

the cable conductor is arranged inside the conductor cavity and comprises six main lines and three zero lines, a conductor body is arranged inside the cable conductor, and a semi-conductive shielding layer, an inner flame-retardant belt and an inner sheath layer are sequentially arranged on the outer side of the conductor body from inside to outside.

Preferably, the heat insulation layer is adhered to the inner side of the outer sheath layer, the outer flame-retardant belt is adhered to the inner side of the heat insulation layer, the outer insulating layer is adhered to the inner side of the outer flame-retardant belt, the copper strip shielding layer is adhered to the inner side of the outer insulating layer, and the inner insulating layer is adhered to the inner side of the copper strip shielding layer.

Preferably, the inside in wire chamber is provided with the guard bar, the guard bar is provided with five, five the guard bar annular distribution.

Preferably, the protection strip is arranged to be a rubber protection strip, and an inner through hole is formed in the protection strip.

Preferably, the inside of the wire cavity is filled with non-woven fabric.

Preferably, the semi-conductive shielding layer is connected with the inner flame-retardant belt in an adhesive mode, and the inner flame-retardant belt is connected with the inner jacket layer in an adhesive mode.

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

1. the utility model discloses a through the heat insulation layer, the setting in outer flame retardant zone and interior flame retardant zone for frequency conversion cable can bear higher temperature, increase life, wherein the setting on heat insulation layer, can make frequency conversion cable have fine thermal-insulated ability, reduce the conduction of external high temperature, improve the stability that frequency conversion cable used under high temperature environment, and the setting in outer flame retardant zone and interior flame retardant zone, it is fire-retardant at the inside two-stage that forms of frequency conversion cable, when frequency conversion cable is in the conflagration environment, can prevent effectively that frequency conversion cable from burning, frequency conversion cable's security has been improved.

2. The utility model discloses a through the setting on copper strips shielding layer and semi-conductive shielding layer, can effectively prevent the discharge damage between inside cable conductor and the outside cable, make the cable have stronger withstand voltage impact property, the pulse voltage when can stand high-speed frequent frequency conversion has improved the security.

3. The utility model discloses a through the setting of protective strip, wherein the protective strip is rubber protective strip, when the variable frequency cable received the external pressure striking, the protective strip can cushion the absorbed pressure, and the protection cable wire bears striking pressure, has improved cable wire's security.

Drawings

Fig. 1 is a schematic view of a high flame retardant high voltage variable frequency cable of the present invention;

fig. 2 is a side sectional view of a high flame-retardant high-voltage variable frequency cable according to the present invention;

FIG. 3 is an enlarged schematic view of the part A of the present invention;

fig. 4 is an internal schematic view of the cable conductor of the present invention.

In the figure: 1. a cable main body; 2. a cable conductor; 3. a wire lumen; 4. a protective strip; 5. an inner through hole; 6. an outer jacket layer; 7. a thermal insulation layer; 8. an outer flame retardant belt; 9. an outer insulating layer; 10. a copper strip shielding layer; 11. an inner insulating layer; 12. an inner jacket layer; 13. an inner flame retardant belt; 14. a semiconductive shield layer; 15. a wire body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, the present invention provides an embodiment: a high flame-retardant high-voltage variable frequency cable comprises a cable main body 1 and a lead cavity 3, wherein the lead cavity 3 is arranged inside the cable main body 1, the cable main body 1 comprises an outer sheath layer 6, a heat insulation layer 7, an outer flame-retardant belt 8, an outer insulation layer 9, a copper strip shielding layer 10 and an inner insulation layer 11, and the heat insulation layer 7 is arranged, so that the variable frequency cable has good heat insulation capability, the conduction of external high temperature is reduced, and the use stability of the variable frequency cable in a high-temperature environment is improved; the cable conductor 2 is arranged inside the conductor cavity 3, the cable conductor 2 is provided with six wires, the six cable conductors 2 comprise three main wires and three zero lines, a wire body 15 is arranged inside the cable conductor 2, a semi-conductive shielding layer 14, an inner flame-retardant belt 13 and an inner sheath layer 12 are sequentially arranged on the outer side of the wire body 15 from inside to outside, and the inner flame-retardant belt 13 and the outer flame-retardant belt 8 are arranged to effectively prevent the variable frequency cable from burning, so that the flame retardant capability of the variable frequency cable is improved, and the safety of the variable frequency cable is improved.

Referring to fig. 2 and 3, the heat insulating layer 7 is adhered to the inner side of the outer sheath layer 6, the outer flame retardant tape 8 is adhered to the inner side of the heat insulating layer 7, the outer insulating layer 9 is adhered to the inner side of the outer flame retardant tape 8, the copper tape shielding layer 10 is adhered to the inner side of the outer insulating layer 9, the inner insulating layer 11 is adhered to the inner side of the copper tape shielding layer 10, and the outer sheath layer 6, the heat insulating layer 7, the outer flame retardant tape 8, the outer insulating layer 9, the copper tape shielding layer 10 and the inner insulating layer 11 are all fixedly connected through a hot melt adhesive, so that the connection stability is improved.

Referring to fig. 2, the protection strips 4 are arranged inside the wire cavity 3, the number of the protection strips 4 is five, the five protection strips 4 are distributed annularly, and the impact pressure bearing capacity of the variable frequency cable is improved through the five protection strips 4 distributed annularly.

Referring to fig. 2, the protection strip 4 is a rubber protection strip, so that the protection strip 4 can buffer and reduce pressure, the inner through hole 5 is formed in the protection strip 4, the deformation and pressure reduction process of the protection strip 4 is facilitated, and the safety of the variable frequency cable is improved.

Referring to fig. 2, the non-woven fabric is filled inside the wire cavity 3, so as to increase the tightness of the cable wire 2 and prevent the cable wire 2 from shaking and rubbing.

Referring to fig. 4, the semi-conductive shielding layer 14 is connected to the inner flame-retardant tape 13 in an adhesive manner, the inner flame-retardant tape 13 is connected to the inner sheath layer 12 in an adhesive manner, and the semi-conductive shielding layer 14, the inner flame-retardant tape 13 and the inner sheath layer 12 are all fixedly connected through the hot melt adhesive, so that the connection stability is improved.

The working principle is as follows: when the variable frequency cable is used, the variable frequency cable can have good heat insulation capacity under the action of the heat insulation layer 7, the conduction of external high temperature is reduced, the use stability of the variable frequency cable in a high-temperature environment is improved, two-stage flame retardance is formed inside the variable frequency cable under the action of the outer flame retardant belt 8 and the inner flame retardant belt 13, when the variable frequency cable is in a fire environment, the variable frequency cable can be effectively prevented from burning, the cable conductor 2 is protected, the safety of the variable frequency cable is improved, when the variable frequency cable is impacted by external pressure, the impact pressure can be borne and absorbed by buffering under the action of the protective strip 4, the cable conductor 2 is protected, the safety of the cable conductor 2 is improved, meanwhile, the discharge damage between the inner cable conductor 2 or the outer cable can be effectively prevented under the action of the copper strip shielding layer 10 and the semi-conductive shielding layer 14, the cable has strong voltage impact resistance, the cable can bear pulse voltage during high-speed frequent frequency conversion, and the safety is improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a high fire-retardant high voltage variable frequency cable, includes cable main part (1), its characterized in that:

the cable comprises a cable main body (1), a lead cavity (3) and a heat insulation layer, wherein the cable main body (1) comprises an outer sheath layer (6), a heat insulation layer (7), an outer flame retardant tape (8), an outer insulation layer (9), a copper strip shielding layer (10) and an inner insulation layer (11);

the cable conductor (2) is arranged inside the conductor cavity (3), six cable conductors (2) are arranged, each six cable conductor (2) comprises three main lines and three zero lines, a line body (15) is arranged inside each cable conductor (2), and a semi-conductive shielding layer (14), an inner flame-retardant belt (13) and an inner sheath layer (12) are sequentially arranged on the outer side of the line body (15) from inside to outside.

2. The high flame retardant high voltage variable frequency cable according to claim 1, wherein: the heat insulation layer (7) is adhered to the inner side of the outer sheath layer (6), the outer flame-retardant belt (8) is adhered to the inner side of the heat insulation layer (7), the outer insulating layer (9) is adhered to the inner side of the outer flame-retardant belt (8), the copper strip shielding layer (10) is adhered to the inner side of the outer insulating layer (9), and the inner insulating layer (11) is adhered to the inner side of the copper strip shielding layer (10).

3. A high flame retardant high voltage frequency conversion cable according to claim 2, wherein: the wire cavity (3) is internally provided with five protective strips (4), and the five protective strips (4) are annularly distributed.

4. A high flame retardant high voltage frequency conversion cable according to claim 3, wherein: the protection strip (4) is arranged to be a rubber protection strip, and an inner through hole (5) is formed in the protection strip (4).

5. A high flame retardant high voltage frequency conversion cable according to claim 1, wherein: the inside of the wire cavity (3) is filled with non-woven fabrics.

6. A high flame retardant high voltage frequency conversion cable according to claim 1, wherein: the semi-conductive shielding layer (14) is connected with the inner flame-retardant belt (13) in a bonding mode, and the inner flame-retardant belt (13) is connected with the inner jacket layer (12) in a bonding mode.