CN214671946U

CN214671946U - High-voltage flame-retardant power cable

Info

Publication number: CN214671946U
Application number: CN202023323834.6U
Authority: CN
Inventors: 胡海江; 吴卫东
Original assignee: Haining Huatai Rubber & Plastic Cable Co Ltd
Current assignee: Haining Huatai Rubber & Plastic Cable Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-09
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to a high tension cable technical field just discloses a high voltage is with fire-retardant power cable, including the strengthening rib, the fixed surface of strengthening rib is connected with the first insulation layer, the fixed surface on first insulation layer is connected with a set of cable, the fixed surface of cable is connected with the second insulating layer, the fixed surface of second insulating layer is connected with fire-retardant layer, the fixed surface on fire-retardant layer is connected with the gasbag, the fixed surface of gasbag is connected with the waterproof layer, the fixed surface of waterproof layer is connected with the abrasionproof layer. This fire-retardant power cable is used to high voltage, through first insulating layer and the second insulating layer that sets up, its resistance to breakdown intensity is good, has higher volume electricity cloudy and breakdown voltage, through the fire-retardant rope filling that sets up, and it is filled between the cable, ensures that the cable has better roundness and relative position stability to make this cable, have good fire-retardant shape tensile strength, be applicable to the operational environment demand of high voltage.

Description

High-voltage flame-retardant power cable

Technical Field

The utility model relates to a high tension cable technical field specifically is a high voltage is with fire-retardant power cable.

Background

The high voltage cable is a kind of power cable, which is used for transmitting power between 1kv and 1000kv, and is widely used for power transmission and distribution.

Various high-voltage power cables in the market at present generally have the defect of poor flame-retardant and fire-resistant performance, the existing high-voltage cables are often mineral insulated cables which have excellent fire-resistant performance, and the magnesium oxide mineral insulated cables need special production and processing equipment, and the outer sheath layer is made of all copper, so that the manufacturing cost is high, and the high-voltage cables are limited in practical application to a certain extent, so that the high-voltage cables are difficult to popularize and use on a large scale and particularly difficult to popularize in civil buildings, and therefore the high-voltage flame-retardant power cables are provided to solve the problems.

Disclosure of Invention

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a high-voltage is with fire-retardant power cable has solved because magnesium oxide mineral insulated cable needs special production and processing equipment, and the oversheath layer is full copper, and the cost is higher, receives the restriction of certain degree in the aspect of practical application, consequently hardly uses widely on a large scale, is difficult to the problem of promoting on civil architecture very much.

(II) technical scheme

The utility model provides a following technical scheme: the utility model provides a high voltage is with fire-retardant power cable, includes the strengthening rib, the outer fixed surface of strengthening rib is connected with the first insulation layer, the outer fixed surface on first insulation layer is connected with a set of cable, the outer fixed surface of cable is connected with the second insulation layer, the outer fixed surface of second insulation layer is connected with fire-retardant layer, the outer fixed surface on fire-retardant layer is connected with the gasbag, the outer fixed surface of gasbag is connected with the waterproof layer, the outer fixed surface of waterproof layer is connected with the abrasionproof layer.

Preferably, the number of the cables is more than three, and the cables are arranged on the outer surface of the first insulating layer in an annular array.

Preferably, the first insulating layer is a polyvinyl chloride insulating layer, and has a thickness ranging from 0.3 cm to 0.7 cm.

Preferably, a fire-retardant filling rope is filled between every two adjacent cables.

Preferably, the flame-retardant layer is composed of a fire-resistant mica tape with the thickness of 0.5-0.8 cm.

Preferably, the inside of the balloon is filled with carbon dioxide.

(III) advantageous effects

Compared with the prior art, the utility model provides a high voltage is with fire-retardant power cable possesses following beneficial effect:

this fire-retardant power cable is used to high voltage, when using, first insulating layer and second insulating layer through setting up, it puncture resistance intensity is good, there are higher volume electricity cloudy and breakdown voltage, fire-retardant rope of filling through setting up, it fills between the cable, ensure that the cable has better circularity and relative position stability, can also add the tensile strength of this device, gasbag through setting up, it is being heated the inside carbon dioxide of damaged release, play the effect of supplementary fire extinguishing, the good mesh of fire-retardant fire resistance has been reached, waterproof layer through setting up, the composite strip of plastic-aluminum is generally chooseed for use to the waterproof layer, rubber is generally chooseed for use to the wearing layer, the mode and the wear-resisting shape of device have been improved, thereby make this fire-retardant power cable for high voltage, good fire-retardant shape tensile strength has, be applicable to the operational environment demand of high voltage.

Drawings

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

In the figure: the cable comprises a reinforcing rib 1, a first insulating layer 2, a cable 3, a second insulating layer 4, a flame-retardant layer 5, an air bag 6, a waterproof layer 7, an anti-abrasion layer 8 and a flame-retardant filling rope 9.

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. 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.

Referring to fig. 1, a high-voltage flame-retardant power cable includes a reinforcing rib 1, a first insulating layer 2 is fixedly connected to an outer surface of the reinforcing rib 1, a group of cables 3 is fixedly connected to an outer surface of the first insulating layer 2, and the cables 3 are selected from 1 st, 2 nd, third or 5 th annealed copper conductors which are in accordance with GB/T3956-2008, a second insulating layer 4 is fixedly connected to an outer surface of the cables 3, a flame-retardant layer 5 is fixedly connected to an outer surface of the second insulating layer 4, an air bag 6 is fixedly connected to an outer surface of the flame-retardant layer 5, a waterproof layer 7 is fixedly connected to an outer surface of the air bag 6, an abrasion-proof layer 8 is fixedly connected to an outer surface of the waterproof layer 7, the waterproof layer 7 is generally selected from aluminum-plastic composite tapes, the abrasion-proof layer 8 is generally selected from rubber, and specific materials can be selected according to working requirements.

Further, the number of the cables 3 is greater than three, and the cables 3 are annularly arrayed on the outer surface of the first insulating layer 2, and the number of the cables 3 is selected according to working requirements.

Further, the first insulating layer 2 is a polyvinyl chloride insulating layer, and has a thickness ranging from 0.3 cm to 0.7cm, and polyvinyl chloride belongs to a polar high polymer, has a higher affinity for conductive substances such as water, and therefore has a lower resistance than non-polar polyolefin, but still has a higher volume cathode and breakdown voltage. The polar group of polyvinyl chloride is directly attached to the main chain, and below the glass transition temperature, the dipole chain segment is limited by the main chain atom of the frozen structure and can not move, so that the dipole effect is not generated, and the polyvinyl chloride can be used as a high-frequency insulating material at room temperature. When used for wire insulation, the electrical insulation of the suspension resin is 10-100 times higher than that of the suspension resin. The presence of chloride ions generated by degradation can reduce electrical insulation.

Furthermore, the flame-retardant filling ropes 9 are filled between every two adjacent cables 3, so that the cables are guaranteed to have better roundness, and when the filling material has a higher oxygen index, the flame-retardant level of the cables can be improved, so that the cables 3 have relative position stability, and the tensile strength of the high-voltage flame-retardant power cable can be increased.

Furthermore, the flame-retardant layer 5 is composed of a fire-resistant mica tape with the thickness of 0.5-0.8cm, has excellent high-temperature resistance and combustion resistance, is generally selected from one or more of a synthetic mica fire-resistant mica tape, a fire-resistant mica tape for a fire-resistant cable and a phlogopite fire-resistant mica tape, generates infusible white hard shell silica after the fire-resistant mica tape meets fire, has good insulating property, has certain mechanical strength and is waterproof, so that the cable can keep safe operation for a certain time when being fired.

Furthermore, carbon dioxide is filled in the airbag 6, other inert gases can be selected according to working requirements, when a fire disaster occurs and the fire disaster spreads to the airbag 6, the airbag 6 is heated and damaged to release the carbon dioxide in the airbag, the effect of auxiliary fire extinguishing is achieved, and the purpose of good flame retardance and fire resistance is achieved.

In summary, in the high voltage flame-retardant power cable, when in use, the first insulating layer 2 and the second insulating layer 4 are provided, the anti-breakdown strength is good, the volume cathode and the breakdown voltage are higher, and through the arranged flame-retardant filling rope 9, the cable is filled between the cables 3, so that the cables have better roundness and relative position stability, the tensile strength of the device can be enhanced, and the cable can be fixed on the cable by the arranged air bag 6, the carbon dioxide inside the fire-resistant material is released when the fire-resistant material is damaged by heating, the fire-resistant material plays a role in auxiliary fire extinguishing, and achieves the purpose of good fire resistance, by arranging the waterproof layer 7, the waterproof layer 7 is generally made of an aluminum-plastic composite belt, the anti-abrasion layer 8 is generally made of rubber, the mode and the abrasion resistance of the device are improved, therefore, the high-voltage flame-retardant power cable has good flame-retardant tensile strength and is suitable for the requirement of high-voltage working environment.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

Claims

1. The utility model provides a high voltage is with fire-retardant power cable, includes strengthening rib (1), its characterized in that: the surface fixed connection of strengthening rib (1) has first insulation layer (2), the surface fixed connection of first insulation layer (2) has a set of cable (3), the surface fixed connection of cable (3) has second insulation layer (4), the surface fixed connection of second insulation layer (4) has fire-retardant layer (5), the surface fixed connection of fire-retardant layer (5) has gasbag (6), the surface fixed connection of gasbag (6) has waterproof layer (7), the surface fixed connection of waterproof layer (7) has abrasionproof layer (8).

2. The flame-retardant power cable for high voltage according to claim 1, wherein: the number of the cables (3) is more than three, and the cables are arranged on the outer surface of the first insulating layer (2) in an annular array.

3. The flame-retardant power cable for high voltage according to claim 1, wherein: the first insulating layer (2) is a polyvinyl chloride insulating layer, and the thickness range is 0.3-0.7 cm.

4. The flame-retardant power cable for high voltage according to claim 1, wherein: and a flame-retardant filling rope (9) is filled between every two adjacent cables (3).

5. The flame-retardant power cable for high voltage according to claim 1, wherein: the flame-retardant layer (5) is composed of a fire-resistant mica tape with the thickness of 0.5-0.8 cm.

6. The flame-retardant power cable for high voltage according to claim 1, wherein: the inside of the air bag (6) is filled with carbon dioxide.