CN216250075U

CN216250075U - Comprehensive cable for unbounded city pipe gallery

Info

Publication number: CN216250075U
Application number: CN202122721134.0U
Authority: CN
Inventors: 杨彬; 孙振华; 章迁平; 黄小芳; 储贤民; 周云; 殳晶
Original assignee: Jiangsu Yuancheng Cable Co ltd
Current assignee: Jiangsu Yuancheng Cable Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-08
Anticipated expiration: 2031-11-08

Abstract

The utility model discloses a comprehensive cable for a non-boundary city pipe gallery, which relates to the technical field of power cables and comprises a power insulation cable core, an inner sheath layer, a shielding reinforcing layer, an outer sheath layer, communication optical fibers, a control signal cable core and the like.

Description

Comprehensive cable for unbounded city pipe gallery

Technical Field

The utility model relates to the technical field of power cables, in particular to a comprehensive cable for a non-boundary city pipe gallery.

Background

The utility tunnel is an underground city pipeline utility tunnel, namely, a tunnel space is built underground, various pipelines such as municipal administration, electric power, communication, gas, water supply and drainage and the like are integrated, a special access hole, a lifting hole and a monitoring system are arranged, and unified planning, design, construction and management are implemented.

Type of utility tunnel: the trunk comprehensive pipe gallery and the branch comprehensive pipe gallery; the main utility tunnel is generally arranged below the center of a road and is responsible for providing distribution service for the branch utility tunnels, the main contained pipelines are communication, cable television, electric power, fuel gas, tap water and the like, and some main utility tunnels bring rain and sewage systems into the tunnel. The branch comprehensive pipe gallery is a channel communicated between the trunk comprehensive pipe gallery and the end users, is generally arranged below sidewalks on two sides of a road, mainly contains pipelines for direct services such as communication, cable television, electric power, gas, tap water and the like, and the structural section is more than a rectangle.

However, in the planning and implementation process of the comprehensive pipe rack, the pipe rack is complex, a plurality of combustible substances, internal moisture and other factors exist, and a heat-resistant, corrosion-resistant, halogen-free, low-smoke and environment-friendly comprehensive cable is required to be developed aiming at the cable for the comprehensive pipe rack.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a comprehensive cable for a non-boundary city pipe gallery, which comprises seven power insulation cable cores twisted with each other, wherein six power insulation cable cores are uniformly abutted against the outer side of the circumference of the other power insulation cable core, two adjacent power insulation cable cores are abutted against each other, an inner sheath layer is extruded outside each power insulation cable core, a shielding reinforcing layer is woven outside each inner sheath, and an outer sheath layer is extruded outside each shielding reinforcing layer; gaps are formed between every two adjacent power insulation cable cores and the inner sheath layer, one of the gaps is internally provided with a communication optical fiber, and the rest of the gaps are internally provided with control signal cable cores;

the power insulation cable core comprises a power conductor and a power insulation layer extruded outside the power conductor;

the control signal cable core comprises three cable cores which are twisted with each other, a shielding layer is woven outside the cable cores, and a flame-retardant sheath layer is extruded outside the shielding layer;

the wire core comprises a control conductor and a control insulating layer extruded outside the control conductor.

The technical scheme of the utility model is further defined as follows: the inner sheath layer, the outer sheath layer and the flame-retardant sheath layer are all made of irradiation cross-linked polyolefin; the materials of the dynamic insulating layer and the control insulating layer are set to be radiation cross-linked polyolefin.

Furthermore, the shielding reinforcing layer is made of carbon fiber wires.

Preceding the comprehensive cable for unbounded city piping lane, the material of shielding layer sets up to the tinned copper wire.

The comprehensive cable for the unbounded city pipe gallery is characterized in that the power conductor is a five-type tin-plated copper conductor.

The comprehensive cable for the unbounded city pipe gallery is characterized in that the control conductor is formed by twisting aramid yarns and five types of tinned copper conductors.

The utility model has the beneficial effects that:

(1) in the utility model, five types of tin-plated copper conductors and aramid yarns are twisted together, so that the problems of small diameter and low strength of the control conductor are effectively solved; the high-strength aramid yarn is arranged in the center of the wire core, stress points are concentrated on the high-strength aramid yarn, so that the control signal wire core is prevented from being broken, the high-strength aramid yarn is light in weight, and the weight of the cable is not increased;

(2) according to the utility model, each sheath layer and each insulating layer are made of rat-proof ant-proof low-smoke halogen-free flame-retardant irradiation crosslinking polyolefin materials, and after electronic irradiation, the heat resistance and corrosion resistance of the cable are enhanced, so that the cable can work at the environmental temperature of an underground pipe gallery for a long time, can bear large current, enhance the operation safety of a system and prolong the service life of the cable;

(3) according to the utility model, the shielding reinforcing layer is woven by adopting high-strength carbon fiber yarns, and the woven layer has a shielding effect and ensures that the communication optical fiber and the control signal cable core are not interfered by external electromagnetic interference; the cable has high tensile strength and soft texture, and can be used as a cable reinforcing layer to enhance the flexibility of the cable;

(4) according to the utility model, the photoelectric composite structure is adopted, the outer diameter is small, the weight is light, the occupied space is small, the excellent bending performance and the good lateral pressure resistance are realized, the construction is convenient, multiple transmission technologies are provided, the adaptability to equipment is high, the expandability is strong, the product application range is wide, materials are saved, the electric power collection and communication of the cable are integrated, and the problem of multi-network fusion of the cable can be solved only by one-time construction.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the control signal cable core of the present invention.

Wherein: 1. a power insulation cable core; 11. a power conductor; 12. a dynamic insulation layer; 2. an inner jacket layer; 3. a shielding reinforcement layer; 4. an outer jacket layer; 5. a gap; 6. a communication optical fiber; 7. a control signal cable core; 71. a wire core; 711. a control conductor; 712. a control insulating layer; 72. a shielding layer; 73. a flame-retardant sheath layer.

Detailed Description

The utility model provides a comprehensive cable for no difference city piping lane, the structure is shown in fig. 1 to fig. 2, including seven power insulation cable cores 1 that strand each other, wherein six power insulation cable cores 1 evenly contradict in the circumference outside of another power insulation cable core 1, and contradict each other between two adjacent power insulation cable cores 1, power insulation cable core 1 includes power conductor 11 and crowds the power insulation layer 12 outside power conductor 11.

The power conductor 11 is set as five types of tin-plated copper conductors, and the power insulating layer 12 is made of radiation cross-linked polyolefin.

An inner sheath layer 2 is extruded outside the power insulation cable core 1, a shielding reinforcing layer 3 is woven outside the inner sheath, and an outer sheath layer 4 is extruded outside the shielding reinforcing layer 3; the inner sheath layer 2 and the outer sheath layer 4 are both made of irradiation cross-linked polyolefin, the shielding reinforcing layer 3 is made of high-strength carbon fiber yarns, the shielding reinforcing layer 3 is woven by the high-strength carbon fiber yarns, and the woven layer has a shielding effect and ensures that the communication optical fiber 6 and the control signal cable core 7 are not interfered by external electromagnetic interference; and the cable has high tensile strength and soft texture, and can be used as a cable reinforcing layer to enhance the flexibility of the cable.

A gap 5 is formed between each two adjacent power insulation cable cores 1 and the inner sheath layer 2, one communication optical fiber 6 is arranged in one gap 5, and control signal cable cores 7 are arranged in the rest gaps 5; the control signal cable core 7 includes three twisted wire cores 71, and the wire cores 71 include a control conductor 711 and a control insulating layer 712 extruded outside the control conductor 711.

The control conductor 711 is formed by twisting aramid yarns and five types of tin-plated copper conductors, the material of the control insulating layer 712 is radiation cross-linked polyolefin, and the five types of tin-plated copper conductors and the aramid yarns are twisted together, so that the problems of small diameter and low strength of the control conductor 711 are effectively solved; sinle silk 71 center has set up high strength aramid yarn, concentrates on high strength aramid yarn stress point, has guaranteed like this that phenomenon of rupture can not appear in control signal sinle silk 71 to high strength aramid yarn weight is lighter, can not additionally increase cable weight.

A shielding layer 72 is woven outside the wire core 71, and a flame-retardant sheath layer 73 is extruded outside the shielding layer 72; the material of shielding layer 72 is set to be a tinned copper wire, and the material of flame-retardant sheath layer 73 is set to be irradiation cross-linked polyolefin.

All restrictive coatings and insulating layer adopt protection against rodents protection against the ant low smoke and zero halogen fire-retardant irradiation crosslinked polyolefin material, and after electron irradiation, its heat-resisting, corrosion resisting property reinforcing ensure that the cable can work under the underground pipe gallery ambient temperature for a long time to can bear the weight of heavy current, reinforcing system operation security, the life of extension cable.

This cable adopts the photoelectricity composite construction, and the external diameter is little, and light in weight, occupation space is little, has superior bending property and good resistant side pressure performance, and construction convenience provides multiple transmission technology simultaneously, and adaptability with equipment is high, scalability is strong, and the product wide application, material saving makes cable collection electric power communication in an organic whole, has realized only needing once to be under construction, once only solves the problem that the cable multigrid fuses.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.

Claims

1. The utility model provides a there is not city comprehensive cable for piping lane of difference which characterized in that: the cable comprises seven power insulation cable cores (1) which are twisted with each other, wherein six power insulation cable cores (1) are uniformly butted against the outer side of the circumference of the other power insulation cable core (1), two adjacent power insulation cable cores (1) are butted with each other, an inner sheath layer (2) is extruded outside each power insulation cable core (1), a shielding reinforcing layer (3) is woven outside each inner sheath, and an outer sheath layer (4) is extruded outside each shielding reinforcing layer (3); gaps (5) are formed between every two adjacent power insulation cable cores (1) and the inner sheath layer (2), one of the gaps (5) is internally provided with a communication optical fiber (6), and the rest gaps (5) are internally provided with control signal cable cores (7);

the power insulation cable core (1) comprises a power conductor (11) and a power insulation layer (12) extruded outside the power conductor (11);

the control signal cable core (7) comprises three cable cores (71) which are twisted with each other, a shielding layer (72) is woven outside the cable cores (71), and a flame-retardant sheath layer (73) is extruded outside the shielding layer (72);

the wire core (71) includes a control conductor (711) and a control insulating layer (712) extruded outside the control conductor (711).

2. The comprehensive cable for the unbounded city pipe gallery according to claim 1, characterized in that: the inner sheath layer (2), the outer sheath layer (4) and the flame-retardant sheath layer (73) are all made of radiation cross-linked polyolefin; the dynamic insulating layer (12) and the control insulating layer (712) are both made of radiation-crosslinked polyolefin.

3. The comprehensive cable for the unbounded city pipe gallery according to claim 1, characterized in that: the shielding reinforcing layer (3) is made of carbon fiber wires.

4. The comprehensive cable for the unbounded city pipe gallery according to claim 1, characterized in that: the shielding layer (72) is made of tinned copper wires.

5. The comprehensive cable for the unbounded city pipe gallery according to claim 1, characterized in that: the power conductor (11) is set to be five types of tin-plated copper conductors.

6. The comprehensive cable for the unbounded city pipe gallery according to claim 1, characterized in that: the control conductor (711) is formed by twisting aramid yarn and five types of tin-plated copper conductors.