CN219958606U

CN219958606U - Armored cable

Info

Publication number: CN219958606U
Application number: CN202321043892.4U
Authority: CN
Inventors: 高仕阔
Original assignee: Zhongshuo Cable Chengdu Co ltd
Current assignee: Zhongshuo Cable Chengdu Co ltd
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2023-11-03
Anticipated expiration: 2033-05-05

Abstract

The utility model relates to an armoured cable comprising: an outer sheath layer which is cylindrical; the armor layer is cylindrical and is coaxially arranged with the outer sheath layer, and the armor layer is tightly attached to the inner circumferential surface of the outer sheath layer; a plurality of cable cores penetrating through the armor layer; polyurethane water swelling sealant is filled in the armor layer and among the cable cores, and two ends of the armor layer are sealed. The beneficial effects are that: according to the armored cable, the polyurethane water-swelling sealant is filled in the armored cable, when the surface layer of the armored cable is broken and external rainwater/underground water invades the armored cable, the polyurethane water-swelling sealant swells to occupy the space in the armored cable, so that external rainwater/underground water cannot invade the armored cable, and the polyurethane water-swelling sealant hardly absorbs water, so that the problem that moisture permeates into the center of the armored cable through the polyurethane water-swelling sealant is avoided, lasting and stable water blocking is truly realized, and the waterproof performance is good.

Description

Armored cable

Technical Field

The utility model relates to the technical field of cables, in particular to an armored cable.

Background

The armored cable is buried underground or laid on the ground surface in most cases due to the fact that the armored cable is heavy in weight and is rarely laid overhead, so that the armored cable is inevitably soaked in water or wrapped by wet soil for a long time, particularly the armored cable laid at a low-lying position in a rainy season is soaked in rainwater/underground water for three or five days or more for one month, once the surface layer of the armored cable is prevented from failing to be protected (such as the surface layer is weathered and modified due to long-time wind, sun and rain, the rubber surface layer is broken to generate cracks, the metal of the armor layer is corroded or the quality is unqualified to have holes and cracks, and the like), external rainwater/underground water can enter the armored cable to enable the metal in the cable to be oxidized and rusted, the service life of the cable is shortened, and finally the cable is broken and electric leakage is caused, so that an electric shock accident occurs.

At present, in order to make an armored cable have waterproof performance, a plurality of water-blocking yarns or water-blocking ropes are filled around a cable core in the armored cable, and external rainwater/underground water is prevented from entering the armored cable by utilizing the water-swelling property of the water-blocking yarns or the water-blocking ropes, for example, as shown in a patent with the application number cn 202221909513.0. However, in reality, the waterproof technology does not have the waterproof performance in the true sense, because the waterproof principle is that the waterproof yarn or the waterproof rope swells when meeting water, water entering the armored cable is absorbed, meanwhile, after swelling, the waterproof yarn or the waterproof rope squeezes to occupy the space in the armored cable, so that external rainwater/underground water cannot temporarily invade the armored cable, the waterproof technology can only delay the speed of the external rainwater/underground water invading the armored cable, and cannot thoroughly prevent the water from entering the armored cable, so that the external rainwater/underground water can be prevented from invading the armored cable in a short time, the waterproof yarn or the waterproof rope fully absorbs water and swells, the cable breaks down and leaks, an electric shock occurs (the waterproof yarn or the waterproof rope has very strong water absorption performance, the waterproof yarn or the waterproof rope near the edge of the armored cable firstly absorbs the water invading the armored cable, the waterproof yarn or the waterproof rope becomes swelled to a large extent, the waterproof yarn or the waterproof rope near the center of the armored cable can absorb the water in the swelled to a large extent, and then the waterproof yarn or the waterproof rope near the center of the armored cable gradually swells to a large extent, and the waterproof yarn or the waterproof rope is gradually swelled to a large extent, and the waterproof performance is completely failed, and the waterproof performance occurs.

Disclosure of Invention

The utility model mainly aims to provide an armored cable, which solves the problem that the waterproof performance of the existing armored cable which is waterproof by using water-blocking yarns or water-blocking ropes cannot last long in the background art.

In order to solve the problems, the utility model provides the following technical scheme:

an armored electrical cable comprising:

an outer sheath layer which is cylindrical;

the armor layer is cylindrical and is coaxially arranged with the outer sheath layer, and the armor layer is tightly attached to the inner circumferential surface of the outer sheath layer;

a plurality of cable cores penetrating through the armor layer;

polyurethane water swelling sealant is filled in the armor layer and among the cable cores, and two ends of the armor layer are sealed.

As a preferable technical scheme of the utility model, the polyurethane water-swellable sealant fills the gaps in the armor layer, so that a plurality of cable cores are fixed in the armor layer.

As a preferable technical scheme of the utility model, two ends of the armor layer are sealed by the sealing baffle, and the sealing baffle is tightly attached to the inner circumferential surface of the armor layer and is detachably connected with the armor layer.

As a preferable technical scheme of the utility model, the sealing baffle is in interference fit with the armor layer.

As a preferable technical scheme of the utility model, the sealing baffle is made of rubber.

As a preferable technical scheme of the utility model, one end of the sealing baffle is coaxially and fixedly provided with a mounting ring, the mounting ring is provided with a screw, and the screw can tightly prop against the inner circumferential surface of the armor layer.

As a preferred embodiment of the present utility model, the screw is screwed along the radial direction of the mounting ring.

As a preferable technical scheme of the utility model, a plurality of screws are uniformly distributed on the mounting ring.

As a preferable technical scheme of the utility model, the cable core penetrates through the sealing baffle and is in sealing connection with the sealing baffle.

As a preferable technical scheme of the utility model, the cable core comprises an inner sheath layer and a plurality of wire cores arranged in the inner sheath layer.

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

according to the armored cable, the polyurethane water-swelling sealant is filled in the armored cable, when the surface layer of the armored cable is broken and external rainwater/underground water invades the armored cable, the polyurethane water-swelling sealant swells to occupy the space in the armored cable, so that external rainwater/underground water cannot invade the armored cable, and the polyurethane water-swelling sealant hardly absorbs water, so that the problem that moisture permeates into the center of the armored cable through the polyurethane water-swelling sealant is avoided, lasting and stable water blocking is truly realized, and the waterproof performance is good.

Drawings

Fig. 1 is a schematic view of an armored cable of the present utility model;

FIG. 2 is a schematic diagram of a second embodiment of an armored cable of the present utility model;

fig. 3 is an internal structural view of an armored cable of the present utility model.

The figures indicate: 1. an outer sheath layer; 2. an armor layer; 3. an inner sheath layer; 4. a sealing baffle; 5. an annular jack; 6. a mounting ring; 7. a screw; 8. a wire core.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model.

Thus, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model, as claimed, but is merely representative of some embodiments of the utility model. 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.

It should be noted that, under the condition of no conflict, the embodiments of the present utility model and the features and technical solutions in the embodiments may be combined with each other.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, or an azimuth or a positional relationship conventionally understood by those skilled in the art, such terms are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

According to the armored cable, the polyurethane water-swelling sealant is filled in the armor layer 2, when the surface layer of the armored cable is broken and external rainwater/underground water invades the armored cable, the polyurethane water-swelling sealant swells to occupy the space in the armored cable, so that external rainwater/underground water cannot invade the armored cable, the polyurethane water-swelling sealant hardly absorbs water, the problem that moisture permeates into the center of the armored cable through the polyurethane water-swelling sealant is avoided, and the waterproof performance is good.

Specifically, in an embodiment of the present utility model, as shown in fig. 1 to 3, the armored cable at least includes an outer jacket layer 1, an armor layer 2 and a plurality of cable cores, where the outer jacket layer 1 is cylindrical, and typically, the outer jacket layer 1 is made of rubber and is used for protecting the armor layer 2 and the plurality of cable cores.

In this embodiment, as shown in fig. 1 to 3, the armor layer 2 is also cylindrical and is coaxially disposed with the outer jacket layer 1, the armor layer 2 is tightly attached to the inner circumferential surface of the outer jacket layer 1, and in general, the armor layer 2 is made of metal to protect multiple cable cores and improve the tensile strength and compressive strength of the cable.

In this embodiment, as shown in fig. 1-3, a plurality of cable cores penetrate through the armor layer 2, each cable core at least includes an inner sheath layer 3 and a plurality of wire cores 8 disposed in the inner sheath layer 3, and the inner sheath layer 3 is made of the same material as the outer sheath layer 1, and the wire cores 8 are used for transmitting electric energy, and the material of the wire cores is mostly copper.

In this embodiment, after the plurality of cable cores penetrate through the armor layer 2, polyurethane water-swelling sealant is filled in the armor layer 2 and between the plurality of cable cores, the plurality of cable cores are fixed in the armor layer 2 through the polyurethane water-swelling sealant, the polyurethane water-swelling sealant is nonflammable, has small water absorption rate and large water-swelling, is soft, and can not lead the armored cable to become hard like stone and bending after swelling, and does not affect use, when the outer sheath layer 1 and the armor layer 2 are ruptured to cause external rainwater/underground water to be unable to invade the armor layer 2, the polyurethane water-swelling sealant is enlarged to occupy the gaps in the armor layer 2, and fills the gaps in the armor layer 2, thereby preventing subsequent rainwater/underground water from continuously invading the armor layer 2, and meanwhile, the polyurethane water-swelling sealant hardly absorbs water, so that water at the inner circumferential surface of the armor layer 2 can not permeate to the center of the armored cable through the polyurethane water-swelling sealant, the polyurethane water-swelling sealant truly protects the plurality of cable cores from being in contact with water, and realizes stable waterproof performance of the armored cable.

In this embodiment, after the polyurethane water-swelling sealant is filled into the armor layer 2, the armor layer 2 at two ends of the length direction of the armored cable needs to be sealed in time, so that the denaturation of the filled polyurethane water-swelling sealant is avoided, for example, the polyurethane water-swelling sealant is filled into the armor layer 2 by means of one end of the length direction of the armored cable, air in the armor layer 2 escapes from the other end of the length direction of the armored cable, and when the polyurethane water-swelling sealant is filled to the other end of the length direction of the armored cable, the armor layer 2 at two ends of the length direction of the armored cable is sealed.

In this embodiment, in order to reduce the cost, the polyurethane water-swelling sealant may not be filled in the armor layer 2 when the armored cable leaves the factory, the armored cable with a suitable length may be selected according to the field use environment of the armored cable in the later stage, and the polyurethane water-swelling sealant may be filled in the armor layer 2 of the armored cable, for example, a line segment which is several tens to several thousands kilometers long and is easy to be soaked in water is laid in the armor layer 2 of the armored cable, then the armored cable filled with the polyurethane water-swelling sealant may be used in the line segment which is easy to be soaked in water, then both ends of the armored cable are sealed and connected and fixed with other armored cables, and the connection method of the two armored cables is already known and will not be described in detail herein.

Specifically, as shown in fig. 1 to 3, two ends of the armor layer 2 are sealed by a sealing baffle 4, the sealing baffle 4 is tightly attached to the inner circumferential surface of the armor layer 2 and detachably connected with the armor layer 2, and the cable core penetrates through the sealing baffle 4 and is in sealing connection with the sealing baffle 4, for example, the sealing baffle 4 is in interference fit with the armor layer 2 and the cable core to realize sealing connection, so that the end part of the armor layer 2 is sealed.

In this embodiment, the sealing baffle 4 is made of rubber, which is elastic, and can be in interference fit with the armor layer 2 and the cable core to realize sealing connection, so as to seal the end of the armor layer 2.

Further, in this embodiment, as shown in fig. 1 to 3, one end of the sealing baffle 4 is coaxially and fixedly provided with a mounting ring 6, preferably, one end of the sealing baffle 4 is provided with an annular insertion hole 5, and the mounting ring 6 is inserted and fixed in the annular insertion hole 5, so that the sealing baffle 4 and the mounting ring 6 are designed to be convenient to disassemble and assemble; as shown in fig. 1-3, the mounting ring 6 is provided with a plurality of screws 7, preferably, the screws 7 are screwed along the radial direction of the mounting ring 6, the plurality of screws 7 are uniformly distributed on the mounting ring 6, and the screws 7 can be rotated to tightly press against the inner circumferential surface of the armor layer 2, so that the mounting ring 6 and the armor layer 2 are fixedly connected, and the sealing performance is prevented from being reduced due to the fact that the sealing baffle 4 slides axially in the armor layer 2.

In this embodiment, the armor layer 2 is a metal cylinder, and the mounting ring 6 is a metal ring.

The above embodiments are only for illustrating the present utility model and not for limiting the technical solutions described in the present utility model, and although the present utility model has been described in detail in the present specification with reference to the above embodiments, the present utility model is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present utility model; all technical solutions and modifications thereof that do not depart from the spirit and scope of the utility model are intended to be included in the scope of the appended claims.

Claims

1. An armored cable, comprising:

an outer sheath layer which is cylindrical;

a plurality of cable cores penetrating through the armor layer;

2. The armored cable of claim 1, wherein the polyurethane water-swellable sealant fills voids within the armor to secure a plurality of cable cores within the armor.

3. An armored cable as recited in claim 1, wherein the ends of the armor are sealed by sealing baffles which are attached to the inner circumference of the armor and are removably attached to the armor.

4. An armored cable as recited in claim 3, wherein the sealing barrier is an interference fit with the armor.

5. An armored cable as claimed in claim 3, wherein the sealing barrier is made of rubber.

6. An armoured cable according to claim 3 in which one end of the sealing barrier is co-axially secured with a collar on which is provided screws which bear against the inner circumference of the armour layer.

7. An armored cable as claimed in claim 6, wherein the screws are screwed in the radial direction of the mounting ring.

8. An armored cable as recited in claim 6, wherein there are a plurality of screws uniformly distributed on the mounting ring.

9. An armored cable as claimed in claim 3, wherein the cable core extends through the sealing barrier and is sealingly connected thereto.

10. An armored cable as recited in claim 1, wherein the cable core includes an inner jacket layer and a plurality of wire cores disposed in the inner jacket layer.