CN215954882U

CN215954882U - Cable with good insulation effect for power transmission

Info

Publication number: CN215954882U
Application number: CN202121820856.5U
Authority: CN
Inventors: 佟星阁; 陈丽娜; 路照军; 宋云鹏
Original assignee: Beijing Hongkaijie Electromechanical Equipment Co ltd
Current assignee: Beijing Hongkaijie Electromechanical Equipment Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-03-04
Anticipated expiration: 2031-08-05

Abstract

The utility model relates to the technical field of cables, in particular to a cable with good insulation effect for power transmission, which comprises a cable, an insulation sleeve and a slot, wherein the insulation sleeve is sleeved on the outer wall of the cable, the slot is arranged in the insulation sleeve, the outer wall of the insulation sleeve is fixedly connected with a middle layer sleeve, the outer wall of the middle layer sleeve is fixedly connected with an outer layer sleeve, and the outer layer sleeve comprises a water-resisting layer, a moisture-proof layer and a corrosion-resistant layer. This effectual cable of insulation that power transmission used, the corrosion-resistant layer is located outer telescopic outer wall, and the corrosion-resistant layer is formed by inorganic panel preparation, inorganic panel's surface scribbles raw lacquer, inorganic panel all has good corrosion resistance with raw lacquer, can avoid outer sleeve to be corroded by the inside microelement on ground, the condition that leads to the cable to be unable to use appears, the protecting sheathing who has solved present cable has certain water-proof effects, but corrosion-resistant effect is not good, the problem that has certain limitation.

Description

Cable with good insulation effect for power transmission

Technical Field

The utility model relates to the technical field of cables, in particular to a cable with good insulation effect for power transmission.

Background

A cable is an electric energy or signal transmission device, made of one or more mutually insulated conductors and an outer insulating protective layer, a wire for transmitting electric power or information from one place to another, or a cable like a rope made by twisting several or groups of wires (at least two in each group), each group of wires being mutually insulated and often twisted around a center, the whole outer surface being covered with a highly insulating covering layer. The cable has the characteristics of internal electrification and external insulation.

Because the cable on the market is usually buried in the below ground at present, but the protective housing of present cable though has certain waterproof effect, but corrosion-resistant effect is not good, has certain limitation.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a cable with good insulation effect for power transmission, so as to solve the problems of the background art mentioned above.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an effectual cable of insulation that power transmission used, includes cable conductor, insulating sleeve and slot, the outer wall of cable conductor is located to the insulating sleeve cover, the slot is seted up in insulating sleeve's inside, insulating sleeve's outer wall fixedly connected with middle level sleeve, the telescopic outer wall fixedly connected with outer sleeve of middle level.

The outer sleeve comprises a water-resisting layer, a damp-proof layer and an anti-corrosion layer, the water-resisting layer is fixedly connected to the outer wall of the middle sleeve, the damp-proof layer is fixedly connected to the outer wall of the water-resisting layer, and the anti-corrosion layer is fixedly connected to the outer wall of the damp-proof layer.

Preferably, the middle-layer sleeve consists of a high-temperature-resistant layer, a fireproof layer and a heat insulation layer, the high-temperature-resistant layer is fixedly connected to the outer wall of the insulating sleeve, the fireproof layer is fixedly connected to the outer wall of the high-temperature-resistant layer, and the heat insulation layer is fixedly connected to the outer wall of the fireproof layer.

Preferably, the insulating sleeve is made by rubber, and rubber has good insulating effect, the inner wall of slot is pegged graft with the outer wall of cable conductor, and operating personnel can insert the inside of insulating sleeve with the cable conductor through the mode of pegging graft.

Preferably, the water barrier is made by pitch asphalt felt, and pitch asphalt felt has good water proof effect, can avoid the infiltration of liquid water or gaseous state water to the water barrier, the dampproof course is formed by lime suppression, and lime can play good dampproofing effect.

Preferably, the corrosion-resistant layer is made of an inorganic plate, raw lacquer is coated on the surface of the inorganic plate, and the inorganic plate and the raw lacquer have good corrosion resistance, so that the outer sleeve can be prevented from being corroded by trace elements in the ground.

Preferably, the high-temperature resistant layer is made of magnesite, the magnesite has good high-temperature resistance and can firmly lock high temperature inside the middle-layer sleeve, the fireproof layer is made of an inorganic adhesive, and the inorganic adhesive has a good flame-retardant effect.

Preferably, the thermal-insulation layer is made of glass fiber, and the glass fiber has a good thermal-insulation effect and can prevent the outer sleeve from being damaged by high temperature inside the middle sleeve.

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

1. this effectual cable of insulation that power transmission used, the corrosion-resistant layer is located outer telescopic outer wall, and the corrosion-resistant layer is formed by inorganic panel preparation, inorganic panel's surface scribbles raw lacquer, inorganic panel all has good corrosion resistance with raw lacquer, can avoid outer sleeve to be corroded by the inside microelement on ground, the condition that leads to the cable to be unable to use appears, the protecting sheathing who has solved present cable has certain water-proof effects, but corrosion-resistant effect is not good, the problem that has certain limitation.

2. This effectual cable of insulation that power transmission used, too big when the internal current of cable, leads to insulating sleeve to be punctured, and when the inside high temperature of cable, the high temperature resistant layer that forms by the magnesite preparation can firmly lock high temperature in the telescopic inside of middle level to through the weakening of flame retardant coating and insulating layer, thereby avoid high temperature to cause the damage to outer sleeve, promoted the security performance of this cable.

Drawings

FIG. 1 is a front cross-sectional view of the overall structure of the present invention;

FIG. 2 is an enlarged partial cross-sectional view of the sleeve structure of the present invention;

FIG. 3 is an enlarged partial cross-sectional view of the outer sleeve construction of the present invention;

FIG. 4 is a front cross-sectional view of the insulating sleeve structure of the present invention.

In the figure: 1. a cable wire; 2. an insulating sleeve; 3. a slot; 4. a middle sleeve; 401. a high temperature resistant layer; 402. a fire barrier layer; 403. a thermal insulation layer; 5. an outer sleeve; 501. a water barrier layer; 502. a moisture barrier; 503. a corrosion resistant layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides an insulating effectual cable that power transmission used, including cable conductor 1, insulating sleeve 2 and slot 3, cable conductor 1's outer wall is located to insulating sleeve 2 cover, insulating sleeve 2 is formed by the rubber preparation, rubber has good insulating effect, slot 3 is seted up in insulating sleeve 2's inside, slot 3's inner wall is pegged graft with cable conductor 1's outer wall, operating personnel can insert insulating sleeve 2's inside with cable conductor 1 through the mode of pegging graft, insulating sleeve 2's outer wall fixedly connected with middle level sleeve 4, middle level sleeve 4's outer sleeve 5 of outer wall fixedly connected with.

The outer sleeve 5 comprises a water-resisting layer 501, a moisture-proof layer 502 and a corrosion-resistant layer 503, the water-resisting layer 501 is fixedly connected with the outer wall of the middle sleeve 4, the water-resisting layer 501 is made of asphalt felt, the asphalt felt has a good water-resisting effect and can prevent liquid water or gaseous water from permeating the water-resisting layer 501, the moisture-resisting layer 502 is fixedly connected with the outer wall of the water-resisting layer 501, the moisture-proof layer 502 is formed by pressing lime, the lime can play a good moisture-resisting effect, the corrosion-resistant layer 503 is fixedly connected with the outer wall of the moisture-proof layer 502, the corrosion-resistant layer 503 is made of an inorganic plate, the surface of the inorganic plate is coated with raw lacquer, the inorganic plate and the raw lacquer both have good corrosion-resistant capability and can prevent the outer sleeve 5 from being corroded by trace elements inside the ground, the corrosion-resistant layer 503 is positioned on the outer wall of the outer sleeve 5, the corrosion-resistant layer 503 is made of an inorganic plate, and the surface of the inorganic plate is coated with raw lacquer, inorganic panel all has good corrosion resistance with the raw lacquer, can avoid outer sleeve 5 to be corroded by the inside microelement in ground, leads to the condition that the cable can't be used to appear, has solved the protective housing of present cable and has had certain water-proof effects, but corrosion-resistant effect is not good, has the problem of certain limitation.

The middle-layer sleeve 4 is composed of a high temperature resistant layer 401, a fireproof layer 402 and a heat insulation layer 403, the high temperature resistant layer 401 is fixedly connected to the outer wall of the insulating sleeve 2, the high temperature resistant layer 401 is made of magnesite which has good high temperature resistance and can firmly lock high temperature inside the middle-layer sleeve 4, the fireproof layer 402 is fixedly connected to the outer wall of the high temperature resistant layer 401, the fireproof layer 402 is made of inorganic adhesive which has good flame retardant effect, the heat insulation layer 403 is fixedly connected to the outer wall of the fireproof layer 402, the heat insulation layer 403 is made of glass fiber which has good heat insulation effect and can avoid the damage of the high temperature inside the middle-layer sleeve 4 to the outer-layer sleeve 5, when the internal current of the cable is too large, the insulating sleeve 2 is broken down and the temperature inside the cable is too high, the high temperature resistant layer 401 made of magnesite, the high temperature can be firmly locked in the middle layer sleeve 4 and weakened by the fireproof layer 402 and the heat insulation layer 403, so that the outer layer sleeve 5 is prevented from being damaged by the high temperature, and the safety performance of the cable is improved.

In summary, the following steps: the corrosion-resistant layer 503 is positioned on the outer wall of the outer sleeve 5, the corrosion-resistant layer 503 is made of an inorganic plate, raw paint is coated on the surface of the inorganic plate, the inorganic plate and the raw paint both have good corrosion resistance, can avoid the situation that the outer sleeve 5 is corroded by trace elements inside the ground to cause the cable to be unusable, solves the problem that the prior protective shell of the cable has certain waterproof effect, but the corrosion resistance effect is not good, and has a certain limitation, when the internal current of the cable is too large, the insulating sleeve 2 is punctured, and when the temperature in the cable is too high, the high temperature resistant layer 401 made of magnesite can firmly lock the high temperature in the middle layer sleeve 4, and the fireproof layer 402 and the heat insulation layer 403 are weakened, so that the outer sleeve 5 is prevented from being damaged by high temperature, and the safety performance of the cable is improved.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cable that insulating effectual that power transmission used, includes cable conductor (1), insulating sleeve (2) and slot (3), its characterized in that: the insulation sleeve (2) is sleeved on the outer wall of the cable (1), the slot (3) is formed in the insulation sleeve (2), the outer wall of the insulation sleeve (2) is fixedly connected with a middle-layer sleeve (4), and the outer wall of the middle-layer sleeve (4) is fixedly connected with an outer-layer sleeve (5);

outer sleeve (5) include water barrier (501), dampproof course (502) and corrosion resistant layer (503), water barrier (501) fixed connection in the outer wall of middle level sleeve (4), dampproof course (502) fixed connection in the outer wall of water barrier (501), corrosion resistant layer (503) fixed connection in the outer wall of dampproof course (502).

2. The cable with good insulation effect for power transmission according to claim 1, wherein: the middle-layer sleeve (4) is composed of a high-temperature-resistant layer (401), a fireproof layer (402) and a heat insulation layer (403), the high-temperature-resistant layer (401) is fixedly connected to the outer wall of the insulating sleeve (2), the fireproof layer (402) is fixedly connected to the outer wall of the high-temperature-resistant layer (401), and the heat insulation layer (403) is fixedly connected to the outer wall of the fireproof layer (402).

3. The cable with good insulation effect for power transmission according to claim 1, wherein: the insulating sleeve (2) is made of rubber, and the inner wall of the slot (3) is connected with the outer wall of the cable (1) in an inserting mode.

4. The cable with good insulation effect for power transmission according to claim 1, wherein: the waterproof layer (501) is made of asphalt felt, and the damp-proof layer (502) is pressed by lime.

5. The cable with good insulation effect for power transmission according to claim 1, wherein: the corrosion-resistant layer (503) is made of an inorganic plate, and the surface of the inorganic plate is coated with raw lacquer.

6. The cable with good insulation effect for power transmission according to claim 2, wherein: the high-temperature resistant layer (401) is made of magnesite, and the fireproof layer (402) is made of an inorganic adhesive.

7. The cable with good insulation effect for power transmission according to claim 2, wherein: the heat insulation layer (403) is made of glass fiber.