CN218826300U

CN218826300U - Buried electromagnetic interference resistance communication cable

Info

Publication number: CN218826300U
Application number: CN202223470564.0U
Authority: CN
Inventors: 印少卿; 张德培
Original assignee: Jiangsu Diyi Group Co ltd
Current assignee: Jiangsu Diyi Group Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-04-07
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a buried electromagnetic interference resistance communication cable in the cable field, which comprises a cable core, wherein an outer shielding layer is wound at the periphery of the cable core, an inner sheath is arranged at the periphery of the outer shielding layer, a waterproof layer is arranged at the periphery of the inner sheath, a middle sheath is arranged at the periphery of the waterproof layer, a compression-resistant layer is arranged at the periphery of the middle sheath, and an outer sheath is arranged at the periphery of the compression-resistant layer; the outer shielding layer is used for anti-interference protection, so that the cable is not interfered by signals in the using process; the combination of the waterproof layer, the middle sheath and the outer sheath can effectively prevent water from entering the cable; the compression-resistant layer can enhance the compression resistance of the cable, the middle sheath and the outer sheath are combined with the steel belt, the compression resistance of the cable is enhanced more remarkably, and the cable is directly buried in the soil, so that the cable is kept not to deform under the condition of bearing pressure and is normally used.

Description

Buried electromagnetic interference resistance communication cable

Technical Field

The utility model relates to a bury ground electromagnetic interference resistance communication cable in the cable field.

Background

Communication cables are made of one or more mutually insulated conductors surrounded by an insulating layer and a protective layer for transmitting information from one location to another. After entering modern society, due to the reasons of shortage of urban land, high traffic pressure, urban construction and the like, the large cities generally adopt an underground cable information transmission mode. The buried communication cable has the advantages of small occupied area, reliable power transmission and the like. However, since the cable is buried underground, it is required to withstand a large pressure and the underground is wet, and therefore the cable is required to have both waterproof property and pressure resistance. However, in the prior art, the buried cable has insufficient pressure resistance and waterproofness, and when the buried cable is directly buried in the soil, the cable is easy to deform under the condition of bearing pressure, and water also can infiltrate into the cable, so that the cable cannot be normally used.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bury ground electromagnetic interference resistance communication cable, crushing resistance and waterproof performance are good, directly bury in the soil, under the condition of bearing pressure, keep indeformable, normal use.

In order to realize the above purpose, the utility model provides a bury ground electromagnetic interference resistance communication cable, including the cable core, the cable core periphery is around being equipped with outer shielding layer, and the periphery of outer shielding layer is provided with the inner sheath, and the periphery of inner sheath is provided with the waterproof layer, and the periphery of waterproof layer is provided with well sheath, and the periphery of well sheath is provided with the resistance to compression layer, and the periphery of resistance to compression layer is provided with the oversheath.

Compared with the prior art, the utility model has the advantages that the outer shielding layer carries out anti-interference protection, thereby ensuring that the cable is not interfered by signals in the using process; the combination of the waterproof layer, the middle sheath and the outer sheath can effectively prevent water from entering the cable; the compression-resistant layer can enhance the compression resistance of the cable, the middle sheath and the outer sheath are combined with the steel belt, the compression resistance of the cable is enhanced more remarkably, and the cable is directly buried in the soil, so that the cable is kept not to deform under the condition of bearing pressure and is normally used.

As the utility model discloses a further improvement, the cable core is provided with two, and the cable core includes the internal shield layer, is provided with two pair twist wires in the internal shield layer, and the cable core is whole to be oval, and the internal shield layer adopts the tinned copper wire to weave.

Therefore, the cable core is oval and flat, so that the cable core has better pressure resistance, and meanwhile, low-frequency interference is prevented by weaving the tinned copper wire, and the anti-interference performance is improved.

As a further improvement of the utility model, the outer shielding layer is a copper strip; like this through the copper strips around the package, realize anti high frequency interference to weave with the tinned copper wire and combine to realize double-deck protection, effectively prevent the high low frequency electromagnetic interference of cable.

As a further improvement of the utility model, the inner sheath is low-smoke halogen-free polyolefin; therefore, the oxygen index is high, the combustion is difficult, and a large amount of dense smoke and toxic gas can not be generated even if the cable is combusted, so that the cable is more environment-friendly.

As a further improvement of the utility model, the waterproof layer is an aluminum-plastic belt, and the outer surface of the aluminum-plastic belt is covered with a waterproof coating; thus, the waterproof performance is improved by combining the waterproof coating and the aluminum-plastic tape.

As a further improvement of the utility model, the middle sheath is made of high-density polyethylene, the pressure resistant layer is a double-layer steel belt wound in a clearance way, and the outer sheath is made of modified waterproof nylon; thus, the waterproof layer, the high-density polyethylene middle sheath and the modified waterproof nylon can effectively prevent water from entering the cable.

As a further improvement of the utility model, the lead comprises a conductor, the periphery of the conductor is wrapped with an insulating sleeve, the conductor is made of oxygen-free copper, and the insulating sleeve is made of crosslinked polyethylene; thus, the data transmission performance of the communication cable is better.

Drawings

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

Wherein: 1 internal shield layer, 2 external shield layers, 3 oversheath, 4 anti-compression layers, 5 middle sheaths, 6 waterproof layers, 7 inner sheaths, 8 conductors and 9 insulating sleeves.

Detailed Description

The present invention is further described with reference to the accompanying drawings:

as shown in fig. 1, a buried electromagnetic interference resistance communication cable, including the cable core, the cable core periphery is around being equipped with outer shielding layer 2, and the periphery of outer shielding layer 2 is provided with inner sheath 7, and the periphery of inner sheath 7 is provided with waterproof layer 6, and the periphery of waterproof layer 6 is provided with well sheath 5, and the periphery of well sheath 5 is provided with resistance to compression layer 4, and the periphery of resistance to compression layer 4 is provided with oversheath 3.

The cable core is provided with two cable cores, each cable core comprises an inner shielding layer 1, two twisted wires are arranged in each inner shielding layer 1, the whole cable core is oval, and each inner shielding layer 1 is woven by tinned copper wires; the outer shielding layer 2 is a copper strip; the inner sheath 7 is low-smoke halogen-free polyolefin; the waterproof layer 6 is an aluminum-plastic belt, and a waterproof coating is covered on the outer surface of the aluminum-plastic belt; the middle sheath 5 is made of high-density polyethylene, the compression-resistant layer 4 is a double-layer steel belt wound in a clearance manner, and the outer sheath 3 is made of modified waterproof nylon; the wire includes

conductor

8, and 8 peripheries of conductor have wrapped up insulating cover 9, and conductor 8 is oxygen-free copper, and insulating cover 9 is the crosslinked polyethylene material.

The utility model discloses in, the cable is by interior and outer structure does: the cable comprises a conductor 8, an insulating sleeve 9, an inner shielding layer 1, an outer shielding layer 2, an inner sheath 7, a waterproof layer 6, a middle sheath 5, a pressure-resistant layer 4 and an outer sheath 3. Wherein the conductor 8 is oxygen-free copper and is soft copper; the insulating sleeve 9 is cross-linked polyethylene; the inner shielding layer 1 is a tinned copper wire braided shield; the outer shielding layer 2 is 100% shielding of copper strip lapping; the inner sheath 7 is low-smoke halogen-free polyolefin; the waterproof layer 6 is an aluminum-plastic belt with a waterproof coating; the middle sheath 5 is made of high-density polyethylene; the pressure resistant layer 4 is armored, and double layers of steel belts are wound in a clearance mode; the outer sheath 3 is modified waterproof nylon.

The utility model adopts double-layer shielding, the copper wire braided shielding prevents low-frequency interference, the copper strip shields the high-frequency interference by 100 percent, and simultaneously, the double-layer shielding effectively prevents high-frequency and low-frequency electromagnetic interference, thereby ensuring that the cable is not interfered by signals in the using process; the waterproof layer 6, the high-density polyethylene middle sheath 5 and the modified waterproof nylon can effectively prevent water from entering the cable; the double-layer steel band gap wrapping can block small part of electromagnetic interference, mainly enhances the pressure resistance of the cable, and the high-density polyethylene and modified waterproof nylon material have high hardness and are combined with the steel band to be used, so that the pressure resistance of the cable is enhanced more remarkably.

The utility model discloses, whole compressive strength is high, and the water blocking performance is good to double shielding can effectively resist high low frequency electromagnetic interference, and data transmission performance is good.

The present invention is not limited to the above embodiments, and based on the technical solutions of the present disclosure, those skilled in the art can make some substitutions and transformations to some technical features without creative labor according to the disclosed technical contents, and these substitutions and transformations are all within the protection scope of the present invention.

Claims

1. The utility model provides a bury ground electromagnetic interference resistance communication cable which characterized in that: including the cable core, the cable core periphery is around being equipped with outer shielding layer, and the periphery of outer shielding layer is provided with the inner sheath, and the periphery of inner sheath is provided with the waterproof layer, and the periphery of waterproof layer is provided with well sheath, and the periphery of well sheath is provided with the resistance to compression layer, and the periphery of resistance to compression layer is provided with the oversheath.

2. A buried electromagnetic interference resistance communication cable according to claim 1, wherein the cable core is provided with two, the cable core includes an inner shielding layer, two pair-twisted wires are arranged in the inner shielding layer, the whole cable core is oval, and the inner shielding layer is woven by tinned copper wires.

3. A buried electromagnetic interference resistance communications cable according to claim 2, wherein: the outer shielding layer is a copper strip.

4. A buried electromagnetic interference resistance communications cable according to claim 3, wherein: the inner sheath is low smoke and zero halogen polyolefin.

5. A buried electromagnetic interference resistance communication cable as defined in claim 4, wherein: the waterproof layer is an aluminum plastic tape, and the outer surface of the aluminum plastic tape is covered with a waterproof coating.

6. A buried anti-electromagnetic interference communication cable according to claim 5, characterized in that: the middle sheath is made of high-density polyethylene, the anti-pressure layer is a double-layer steel belt wound in a gap mode, and the outer sheath is made of modified waterproof nylon.

7. A buried electromagnetic interference resistance communications cable according to claim 6, wherein: the wire comprises a conductor, the periphery of the conductor is wrapped by an insulating sleeve, the conductor is oxygen-free copper, and the insulating sleeve is made of cross-linked polyethylene.