CN203150314U - Composite cable for wire arrangement by smart power grid terminal user - Google Patents

Abstract

The utility model discloses a comprehensive cable for terminal user wiring of a smart grid, comprising a power core (3), an electrical high-definition signal cable core (4), an electrical control cable core (5) and an optical fiber communication core (6). Power cores, electrical high-definition signal cores, electrical control cores and optical fiber communication cores are cabled and covered with aluminum-magnesium alloy wires or tinned copper wire braids (8) for shielding, and the inner extrusion type filling is flame-retardant, elastic, low-smoke, and halogen-free Polyolefin (7), the outer sheath (9) is wrapped again outside. The integrated cable of the utility model integrates components with multiple functions such as power distribution, electrical appliance monitoring, and Internet communication, which can save installation space, improve installation efficiency, reduce maintenance costs, and stably meet the needs of large-flow data transmission and intelligent power distribution. need. It is suitable for modular application of electrical equipment under smart grid and "three-in-one" communication network.

Description

Integrated cables for smart grid end-user wiring

technical field

The utility model relates to an integrated cable for terminal user wiring of an intelligent grid.

Background technique

With the popularization and application of optical fiber and cable, and the promotion of "fiber-to-the-home" projects by communication companies such as China Telecom, China Mobile, and China Unicom, the Internet, cable TV, and fixed-line telephones have gradually realized "three-in-one" and "one-network" to the door". The fiber-to-the-home project has brought great convenience to Chinese users and enjoyed a convenient information life. With the development of technology, the promotion of smart grid technology will realize intelligent technologies such as remote intelligent control of electrical users, Internet monitoring of water and electricity consumption, and real-time monitoring of water and electricity usage. model. Communication cable products used in traditional power systems, water and gas monitoring systems and Internet systems can no longer meet new technical requirements, which brings a lot of technical space for the development of communication cables used in smart grids.

The structure of existing low-voltage power cables is shown in Figure 1. Generally, stranded bare copper conductors 11 are used, XLPE insulation or PVC insulation 12, and polyvinyl chloride is used as the outer sheath 14 after the multi-core wires are cabled. The mesh belt 13 is filled between the multi-core wires. The structure of the existing "three-in-one" home optical cable is shown in Figure 2. After the optical fiber 21 is twisted, it is wrapped with a loose tube (PBT tube) 23, filled with optical fiber paste 22, and then multi-logarithmic. Filled rope 24 and fiber reinforced plastic (FRP) reinforcing core 25 are added, and after cable formation, the water-blocking tape 27 is outsourced, the inside is filled with optical cable paste 26, and then the inner sheath 28 of medium density polyethylene (MDPE) is extruded, and the outer sheath is aramid fiber The yarn 29 is then extruded into a medium density polyethylene (MDPE) outer sheath 30.

Contents of the invention

The purpose of this utility model is to provide an integrated cable for smart grid terminal user wiring. The maintenance cost can stably meet the needs of large-flow data transmission and intelligent power distribution.

In order to achieve the above-mentioned technical purpose, the utility model adopts the following technical solutions:

An integrated cable for smart grid terminal user wiring, including a power core, an electrical high-definition signal cable core, an electrical control cable core, and an optical fiber communication core, the power core is covered with an insulating layer by a stranded copper conductor; the electrical high-definition signal cable The core is cabled by several high-definition signal cores, and then wrapped with a metal aluminum foil shielding layer, and then wrapped with a high-toughness polyester tape protective layer, filled with mesh tape between the high-definition signal cores and a grounding drain wire, high-definition signal The wire core is made of soft stranded bare copper or tinned copper conductors and is wrapped with an insulating layer and then wrapped with aluminum foil; the electrical control cable core is made of several control wire cores twisted and wrapped with a metal aluminum foil shielding layer. Tinned copper wire braided shielding layer is wrapped with high tenacity polyester tape as a protective layer, and the control wire core is covered with an insulating layer by a soft stranded bare copper or tinned copper conductor; the optical fiber communication core is stranded by an optical fiber and then wrapped The loose tube is filled with optical fiber paste, the loose tube is wrapped with aramid fiber wire, and then wrapped with a high-toughness polypropylene belt protective layer;

Multiple power cores, electrical high-definition signal cores, electrical control cores and optical fiber communication cores are cabled and then covered with aluminum-magnesium alloy wire or tinned copper wire braid shielding, and the inner extrusion type is filled with flame-retardant elastic low-smoke halogen-free polymer. Olefin, covered with an outer sheath.

There are three power cores, two electrical high-definition signal cable cores, one electrical control cable core, six optical fiber communication cores, and two optical fiber communication cores are located on both sides of an electrical high-definition signal cable core. Two optical fiber communication cores are located on both sides of an electrical control cable core to form a group, three power cores are located in the middle, and three groups are arranged at intervals along the periphery of the three power cores.

The insulating layer of the power core is low-smoke halogen-free polyolefin or cross-linked polyolefin insulation.

The insulating layer of the high-definition signal core is low-smoke halogen-free polyolefin or cross-linked polyolefin insulation.

The insulating layer of the control wire core is low-smoke halogen-free polyolefin or cross-linked polyolefin insulation.

The outer sheath is a flame-retardant low-smoke halogen-free polyolefin sheath.

Compared with the prior art, the integrated cable of the utility model has the positive effect that the integrated cable integrates components with multiple functions such as power distribution, electrical appliance monitoring, and Internet communication, which can save installation space, improve installation efficiency, and reduce The maintenance cost can stably meet the needs of large-flow data transmission and intelligent power distribution. It is suitable for the modular application of electrical equipment under smart grid and "three-in-one" communication network.

Description of drawings

Figure 1 is a schematic structural diagram of an existing low-voltage power cable;

Figure 2 is a schematic structural diagram of the existing "three-in-one" home optical cable;

Fig. 3 is a schematic structural diagram of an integrated cable for terminal user wiring of the smart grid of the present invention;

Fig. 4 is a structural schematic diagram of the electric high-definition signal cable core of the utility model;

Fig. 5 is a structural schematic diagram of the electrical control cable core of the present invention;

Fig. 6 is a schematic diagram of the structure of an optical fiber communication core.

In the figure: 11 stranded bare copper conductor, 12 XLPE insulation or PVC insulation, 13 filled mesh belt, 14 PVC outer sheath;

21 optical fiber, 22 optical fiber paste, 23 loose tube (PBT tube), 24 filling rope, 25 fiber reinforced plastic (FRP) reinforcing core, 26 optical cable paste, 27 water blocking tape, 28 medium density polyethylene (MDPE) inner sheath , 29 outsourcing aramid yarn, 30 medium density polyethylene (MDPE) outer sheath;

3 power cores, 31 stranded copper conductors, 32 low-smoke halogen-free polyolefin or cross-linked polyolefin insulation, 4 electrical high-definition signal cable cores, 41 soft-stranded bare copper or tinned copper conductors, 42 low-smoke halogen-free polyolefin Or cross-linked polyolefin insulation, 43 mesh tape filling, 44 tinned copper wire grounding and draining wire, 45 metal aluminum foil wrapping shielding layer, 46 high toughness polyester tape wrapping protective layer, 47 aluminum foil, 5 electrical control cable core, 51 Soft stranded bare copper or tinned copper conductor, 52 low-smoke halogen-free polyolefin or cross-linked polyolefin insulation, 53 metallic aluminum foil wrapping shielding layer, 54 tinned copper wire braided shielding layer, 55 high toughness polyester tape wrapping Protective layer, 6 optical fiber communication cores, 61 optical fibers, 62 optical fiber paste filling, 63 PBT tube, 64 aramid yarn, 65 high tenacity polypropylene tape wrapping protective layer, 7 flame-retardant elastic low-smoke halogen-free polyolefin extrusion filling , 8 aluminum-magnesium alloy wire or galvanized steel wire braid, 9 flame-retardant low-smoke halogen-free polyolefin outer sheath.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

Referring to Figures 3 to 6, an integrated cable for smart grid end-user wiring includes a power core 3, an electrical high-definition signal core 4, an electrical control core 5 and an optical fiber communication core 6, and the power core 3 is stranded The copper conductor 31 is covered with an insulating layer 32; the electrical high-definition signal cable core 4 is cabled by several high-definition signal cores, and then wrapped with a metal aluminum foil shielding layer 45, and then wrapped with a high-toughness polyester tape protective layer 46, and the high-definition signal core The inner mesh is filled with filler 43 and a ground drain wire 44, the ground drain wire 44 is tinned copper wire, and the high-definition signal core is made of soft stranded bare copper or tinned copper conductor 41, which is covered with an insulating layer 42, twisted and wound outside Wrapped with aluminum foil 47, the electrical high-definition signal cable core 4 is a multi-core small cross-section; the electrical control cable core 5 is twisted by several control wire cores and wrapped with a metal aluminum foil shielding layer 53, and the shielding layer 53 is wrapped with tinned copper wire braiding The shielding layer 54 is then wrapped with a high-toughness polyester tape as a protective layer 55, the control wire core is made of soft stranded bare copper or tinned copper conductor 51 and an insulating layer 52 is wrapped, and the electrical control cable core 5 is a multi-core small cross-section; optical fiber communication The wire core 6 is twisted by the optical fiber 61 and then wrapped with a loose tube 63, filled with optical fiber paste 62, the loose tube 63 is wrapped with an aramid fiber 64, and then wrapped with a protective layer 65 of high-toughness polypropylene tape; multiple power cores 3, Electrical high-definition signal cable core 4, electrical control cable core 5 and optical fiber communication core 6 are cabled and then covered with aluminum-magnesium alloy wire or tinned copper wire braiding layer 8 shielding, and the inner extrusion type is filled with flame-retardant elastic low-smoke halogen-free polyolefin 7, wrap outer sheath 9 outside again.

There are three power cores 3, two electrical high-definition signal cable cores 4, one electrical control cable core 5, six optical fiber communication cores 6, and two optical fiber communication cores 6 located in one electrical high-definition signal cable core. 4 two sides are a group, two optical fiber communication cores 6 are located at an electrical control cable core 5 both sides are a group, three power line cores 3 are located in the middle, and three groups are arranged at intervals along the periphery of the three power line cores 3 .

The stranded copper conductor 31 of the power core adopts an electrical copper stranded conductor conforming to IEC60228:2004 "Conductors of Insulated Cables", which ensures good electrical conductivity, electromagnetic signal transmission performance and convenient installation and operation of the product. High-definition signal core soft stranded bare copper or tinned copper conductor 41, control core soft stranded bare copper or tinned copper conductor 51 adopts high-purity soft copper wire for the electrical industry, in line with IEC60228: 2004 "conductor of insulated cables 》Standard, the conductor has good electrical conductivity and tensile strength, suitable for users to install in a small space, good flexibility, and prolongs the service life of the product.

The insulating layer 32 of the power line core, the insulating layer 42 of the high-definition signal line core and the insulating layer 52 of the control line core are all insulated by low-smoke halogen-free polyolefin or cross-linked polyolefin. The insulation is safe and environmentally friendly, low-smoke and halogen-free, good insulation performance, small electromagnetic loss, high temperature resistance, acid and alkali resistance, etc., which can improve the product's resistance to electrical overload while not affecting the twisted pair of instruments with the same cable wiring Monitor the normal use of cable core, control cable core and optical fiber. Good insulation performance improves the withstand voltage level and electromagnetic compatibility of the cable, enabling the product to work normally in the range of -30°C to 105°C when it is fixedly installed, and to withstand 4 hours of overload current in the range of -40°C to 125°C without damage. And high tensile strength.

The high-definition signal cable core 4 of the electrical appliance is cabled by several high-definition signal cores and then wrapped with a metal aluminum foil shielding layer 45 for shielding. The high-definition signal cores are made of soft stranded bare copper or tinned copper conductors 41 and 42 pairs of insulating layers. Wrapped with aluminum foil 47 after twisting, while ensuring normal power distribution, it does not affect the normal operation of the high-definition signal core, and has a drainage and grounding component. The monitoring cable core with all-round shielding of aluminum foil mainly transmits high-frequency electromagnetic signals, so all-round shielding of aluminum foil and reliable tinned copper wire grounding can ensure the normal operation of internal signals without interference from low-frequency signals. The electrical control cable core 5 is twisted by several control wire cores and wrapped with a metal aluminum foil shielding layer 53, and the shielding layer 53 is wrapped with a tinned copper wire braided shielding layer 54, and then wrapped with a high-toughness polyester tape as a protective layer 55 , 0.12mm tinned copper wire is used as the metal shielding layer of the control wire core, which can completely eliminate the 50HZ ultra-low frequency electromagnetic interference from the power distribution unit for the electrical control cable core with low control signal frequency. Each component unit and the whole part of the product have a complete shielding structure and drainage grounding components, which can make the induced current generated internally and externally grounded in time without affecting the normal operation of related components.

The optical fiber communication core 6 adopts a single-mode optical fiber with mature technology. Its structure is filled with perfect optical fiber paste, PBT tube sleeve, and aramid fiber braiding to enhance tensile strength, which can withstand high-strength bending and mechanical tension. stretch. Because during processing, it is fixed as a component in the extruded elastic flame-retardant polyolefin filler, the optical fiber unit itself has no load bearing and has a large bending radius, and the optical fiber unit is completely blocked from water vapor, so the optical fiber unit in the product has reliable application safety , improve the fiber life.

The power line core 3 , electrical high-definition signal cable core 4 , electrical control cable core 5 and optical fiber communication core 6 are cabled and then extruded and filled with flame-retardant elastic low-smoke halogen-free polyolefin 7 . When the wiring system encounters a fire, the cable product of the utility model will not produce delayed combustion and promote the spread of the fire. At the same time, the extruded filling process is used to form a stable component structure inside the cable product. When the cable product is installed and moved, the optical fiber components inside the cable, the monitoring cable core component and the control cable core component will not be damaged due to excessive bending. This structure makes the cable product have good water resistance performance, and can ensure the normal supply of cable power and continuous and effective communication when the product is immersed in water. In this way, when the product adopts underground direct buried wiring, underground pipeline wiring or low-altitude wiring, the cable cannot operate normally due to flood disasters in the rainy season.

The power core 3 , electrical high-definition signal cable core 4 , electrical control cable core 5 and optical fiber communication core 6 are cabled and then covered with aluminum-magnesium alloy wire or tinned copper wire braid 8 for shielding. The braiding density of aluminum-magnesium alloy wire or galvanized steel wire braided armor protection layer is >80%, and the braided layer is smooth and flat without burrs and messy wires, which ensures that the product has good mechanical damage resistance, corrosion resistance and stable structure. The incombustible metal braided sheath plays a role in blocking oxygen in the fire, so that the cable has good fire resistance. In the event that the outer sheath is ignited, the components inside the metal sheath will not ignite.

After the power line core 3, electrical high-definition signal cable core 4, electrical control cable core 5 and optical fiber communication core 6 are cabled, the outer sheath 9 is selected from flame-retardant, ultraviolet-resistant, low-smoke, halogen-free polyolefin sheath material according to the workplace. When the product encounters a fire, the product will not produce toxic smoke to cause suffocation, will not produce thick smoke to cover the escape route, and will not be delayed to become an ignition source for the spread of the fire, and the internal components will still remain intact in the case of passive combustion Being able to persist in work brings great convenience to firefighting.

The comprehensive cable of the utility model integrates components with multiple functions such as power distribution, electrical monitoring, and Internet communication, which is beneficial to the technical integration of relevant departments and the formulation of relevant standards, and is conducive to enhancing disaster resistance and mitigation (such as fire fighting, flood disasters, etc.) ) capabilities, which is conducive to users to conveniently enjoy the high-end production and life brought about by the integration of smart grid and "three-in-one" communication technology, and realize remote control of production equipment and household appliances through information technology.

The above are only preferred embodiments of the present utility model, and are not used to limit the scope of protection of the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be Included within the protection scope of the present utility model.

Claims (6)

1. an intelligent grid terminal use connects up and uses composite cable, it is characterized in that: comprise electric power core (3), electrical equipment high-definition signal cable core (4), electrical equipment control cable core (5) and optical fiber communication core (6), described electric power core (3) is by twisted copper conductors (31) outsourcing insulation (32); Described electrical equipment high-definition signal cable core (4) by some high-definition signal core strandings after outer wrapped metal aluminum foil screen (45), wrapped high-tenacity polyester band overcoat (46) again, fill out guipure between the high-definition signal core and fill (43) and a ground connection drainage thread (44), the high-definition signal core by the stranded naked copper of softness or tin-coated copper conductor (41) outsourcing insulation (42) pair twist after wrapped aluminium foil (47) outward; Described electrical equipment control cable core (5) is by the some outer wrapped metal aluminum foil screens (53) in the stranded back of control core, wrapped high-tenacity polyester band is as overcoat (55) again behind screen (53) the outsourcing tinned copper wire woven shield (54), and the control core is by the stranded naked copper of softness or tin-coated copper conductor (51) outsourcing insulation (52); Described optical fiber communication core (6) is by the stranded back of optical fiber (61) outsourcing pine sleeve pipe (63), in have optical fiber cream to fill (62), loose sleeve pipe (63) outsourcing aramid line (64), wrapped high-toughness polypropylene band overcoat (65) again;

Outsourcing aluminum-magnesium alloy wire or tincopper fuse wire braided armor (8) shielding behind many electric power cores (3), electrical equipment high-definition signal cable core (4), electrical equipment control cable core (5) and optical fiber communication core (6) stranding, internal-extrusion type is filled fire retardant elastic low-smoke halogen-free polyolefin (7), and the outside is wrapped oversheath (9) again.

2. intelligent grid terminal use according to claim 1 connects up and uses composite cable, it is characterized in that: described electric power core (3) is three, electrical equipment high-definition signal cable core (4) is two, electrical equipment control cable core (5) is one, optical fiber communication core (6) is the six roots of sensation, it is one group that two optical fiber communication cores (6) are positioned at an electrical equipment high-definition signal cable core (4) both sides, it is one group that two optical fiber communication cores (6) are positioned at an electrical equipment control cable core (5) both sides, in the middle of three electric power cores (3) were positioned at, making a circle outside three electric power cores (3) arranged three groups at interval.

3. intelligent grid terminal use according to claim 1 and 2 connects up and uses composite cable, it is characterized in that: described power line core insulation layer (32) is low-smoke halogen-free polyolefin or cross-linked polyolefin insulation.

4. intelligent grid terminal use according to claim 1 and 2 connects up and uses composite cable, it is characterized in that: described high-definition signal core insulating barrier (42) is low-smoke halogen-free polyolefin or cross-linked polyolefin insulation.

5. intelligent grid terminal use according to claim 1 and 2 connects up and uses composite cable, it is characterized in that: described control line core insulation layer (52) is low-smoke halogen-free polyolefin or cross-linked polyolefin insulation.

6. intelligent grid terminal use according to claim 1 and 2 connects up and uses composite cable, it is characterized in that: described oversheath (9) is the flame-retardant low-smoke halogen-free polyolefin jacket.

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