CN217035245U

CN217035245U - Low-smoke halogen-free cable for intelligent power grid digital transformer substation

Info

Publication number: CN217035245U
Application number: CN202220052971.0U
Authority: CN
Inventors: 杨鹤武
Original assignee: Shenzhen Kingmarking Wire And Cable Industrial Ltd
Current assignee: Shenzhen Kingmarking Wire And Cable Industrial Ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-07-22
Anticipated expiration: 2032-01-11

Abstract

The utility model relates to a low-smoke halogen-free cable for a digital substation of an intelligent power grid, which comprises a low-smoke halogen-free cable body, wherein a first PTFE (polytetrafluoroethylene) wrapping filling layer is filled in the low-smoke halogen-free cable body. This digital transformer substation of smart power grids is with low smoke and zero halogen cable, weave ground conductor through setting up the mixture, weave ground conductor through the surface parcel mixture at low smoke and zero halogen cable body, not only can not influence the propagation of signal of telecommunication, the heat resistance is good simultaneously, good bending resistance performance has, be the pitch waterproof layer through setting up the waterproof layer, pitch tensile strength is high, the percentage of elongation big quality is light, convenient construction, weave the shielding layer through setting up the copper wire, can guarantee inside signal reception's control cable core, the temperature measurement optic fibre, optic fibre communication line and power cable core do not receive external signal interference, through setting up the theftproof monitoring line, make low smoke and zero halogen cable body receive unusual removal and cutting etc, guarantee that low smoke and zero halogen cable body can self-monitoring.

Description

Low-smoke halogen-free cable for intelligent power grid digital transformer substation

Technical Field

The utility model relates to the technical field of cables, in particular to a low-smoke halogen-free cable for a digital substation of an intelligent power grid.

Background

With the high-speed development of optical communication technology, optical cables are commonly used in backbone networks and office trunk lines of wired communication networks in China, and it is a necessary trend that optical fibers enter an access network, but the optical cable laying cost is too high, the joint cost and the terminal optical-electrical conversion cost are expensive, so that in a long time before the popularization of optical fibers, subscriber lines of the access network still use metal cables as the main parts, and the metal cables mainly comprise three types of all-plastic cables, coaxial cables and data cables, wherein the data cables are the transmission media of the existing ideal broadband access network, and the broadband access network has the advantages of low manufacturing cost, simple structure, good expandability and convenient network upgrade, is mainly used for comprehensive wiring, cell building comprehensive wiring and the like, and the intelligent power grid is different from the traditional power system, uses an extra-high voltage power grid as a backbone network frame, and utilizes advanced communication, information and control technologies, the unified intelligent power grid with the characteristics of informatization, automation, digitization and interaction is constructed to realize the informatization and the refinement of power grid management, so that the safe, reliable, economic and efficient operation of the power grid is better realized.

For providers of smart grid technologies, the challenges of promoting development are upgrading of a distribution network system, automation and electric power transportation of a distribution station, smart grid networks and smart meters, cable products matched with the smart grid in the construction process of the smart grid are very few, the existing smart grid has very large defects, the requirements for rapidly developing the construction of the smart grid cannot be met, and gaps are very large, so that a low-smoke halogen-free cable for a digital substation of the smart grid is required to be provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the low-smoke halogen-free cable for the digital substation of the smart power grid, which has the advantages of better anti-interference performance, anti-theft performance and the like, and solves the problem that the existing cable does not have the anti-interference performance and the anti-theft function.

In order to achieve the purposes of better anti-interference performance and anti-theft performance, the utility model provides the following technical scheme: a low-smoke halogen-free cable for a digital substation of a smart power grid comprises a low-smoke halogen-free cable body, wherein a first PTFE (polytetrafluoroethylene) wrapping filling layer is filled in the low-smoke halogen-free cable body, a mixed braided grounding conductor is arranged on the inner layer of the low-smoke halogen-free cable body, and a rubber protective layer is arranged outside the low-smoke halogen-free cable body;

first PTFE has the electric power cable core around the inside fixed mounting of package filling layer, first PTFE has the control cable core around the inside fixed mounting of package filling layer, first PTFE has the temperature measurement optic fibre around the inside fixed mounting of package filling layer, first PTFE has the optic fibre communication line around the inside fixed mounting of package filling layer.

Further, the inlayer of low smoke and zero halogen cable body includes copper wire braided shield layer, waterproof layer and thin steel wire weaving layer.

Further, the copper wire braided shielding layer is outermost, the thin steel wire braided layer is innermost, and the waterproof layer is located between the copper wire braided shielding layer and the thin steel wire braided layer.

Furthermore, four anti-theft monitoring wires which are uniformly distributed at intervals are embedded in the thin steel wire weaving layer.

Furthermore, the number of the power cable cores is two, and metal heat dissipation layers are arranged outside the power cable cores, the control cable cores, the temperature measuring optical fibers and the optical fiber communication lines.

Furthermore, the power cable core, the control cable core, the temperature measuring optical fiber and the optical fiber communication line are parallel to each other, five conductor cores are arranged inside the power cable core, and the waterproof layer is an asphalt waterproof layer.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

the low-smoke halogen-free cable for the digital substation of the smart power grid is characterized in that a mixed braided grounding conductor is arranged, the mixed braided grounding conductor is wrapped on the outer surface of a low-smoke halogen-free cable body, the propagation of electric signals cannot be influenced, meanwhile, the heat resistance is good, the bending resistance is good, the thermal oxygen aging resistance is high, no obvious melting point exists, the waterproof layer is an asphalt waterproof layer, the asphalt tensile strength is high, the elongation rate is large, the weight is light, the construction is convenient, the control cable core is mainly used for controlling various testing instruments, the real-time monitoring of the whole power network is realized, the regulation and control can be more accurate and effective, the control cable core has the characteristics of high fidelity and super-strong shielding, the information error caused by the interference of signals can be avoided, the control cable core, the temperature measuring optical fibers, the optical fiber communication wires and the power cable core which can ensure that the internal signals are received can not be interfered by external signals by arranging the copper wire braided shielding layer, guarantee the transmission speed and the degree of accuracy, through setting up the theftproof monitoring line, make low smoke and zero halogen cable body receive unusual removal and cutting etc. guarantee that low smoke and zero halogen cable body can monitor by oneself, solved the problem that current cable does not possess interference immunity and theftproof function.

Drawings

FIG. 1 is a schematic view of a LSOH cable according to the present invention;

FIG. 2 is a right side view of the low smoke zero halogen cable of the present invention;

FIG. 3 is an enlarged view of the structure of the low smoke zero halogen cable of the present invention;

fig. 4 is a schematic view of the structure of the fine steel wire braid of the present invention.

In the figure: 1 low smoke and zero halogen cable body, 2 mix and weave ground conductor, 3 first PTFE around package filling layer, 4 rubber inoxidizing coating, 5 control cable cores, 6 temperature measurement optic fibre, 7 optic fibre communication lines, 8 copper wire woven shield, 9 waterproof layers, 10 thin steel wire weaving layers, 11 metal heat dissipation layers, 12 theftproof monitoring line, 13 power cable cores.

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 low smoke zero halogen cable for the digital substation of the smart grid in the embodiment includes a low smoke zero halogen cable body 1, a first PTFE wrapping filling layer 3 is filled inside the low smoke zero halogen cable body 1, a hybrid braided grounding conductor 2 is arranged inside the low smoke zero halogen cable body 1, and a rubber protection layer 4 is arranged outside the low smoke zero halogen cable body 1;

first PTFE has power cable core 13 around the inside fixed mounting of package filling layer 3, and first PTFE has control cable core 5 around the inside fixed mounting of package filling layer 3, and first PTFE has temperature measurement optic fibre 6 around the inside fixed mounting of package filling layer 3, and first PTFE has optic fibre communication line 7 around the inside fixed mounting of package filling layer 3.

When in implementation, the method comprises the following steps:

1) the hybrid braided grounding conductor 2 is arranged, and the hybrid braided grounding conductor 2 is wrapped on the outer surface of the low-smoke halogen-free cable body 2, so that the propagation of electric signals is not influenced, and meanwhile, the cable is good in heat resistance, has good bending resistance, is resistant to thermal oxidation aging and has no obvious melting point;

2) then, the control cable core 5 is mainly used for controlling various testing instruments, so that the whole power network is monitored in real time, the regulation and control can be more accurate and effective, and the control cable core 5 has the characteristics of high fidelity and super-strong shielding;

3) the copper wire braided shielding layer 8 is arranged, so that the control cable core 5, the temperature measuring optical fiber 6, the optical fiber communication wire 7 and the power cable core 13 which receive internal signals can be prevented from being interfered by external signals, and the transmission speed and accuracy are guaranteed;

4) and finally, by arranging the anti-theft monitoring wire 12, the low-smoke halogen-free cable body 1 is enabled to be abnormally moved and cut, and the low-smoke halogen-free cable body 1 can be automatically monitored.

To sum up, this digital transformer substation of smart power grids uses low smoke and zero halogen cable, weave earthing conductor 2 through setting up the mixture, weave earthing conductor 2 through the surface parcel mixture at low smoke and zero halogen cable body 2, not only can not influence the propagation of signal of telecommunication, and the heat resistance is good simultaneously, have good bending resistance, and thermal-oxidative ageing resistance, there is not obvious fusing point, through setting up waterproof layer 9 for the pitch waterproof layer, pitch tensile strength is high, the big quality of percentage elongation is light, construction convenience, through setting up control cable core 5 and mainly being used for controlling various test instruments, realize whole power network real time monitoring, and make regulation and control can be more accurate, more effective, control cable core 5 has high-fidelity, superstrong shielded characteristics, can avoid the signal to receive the interference and the information mistake appears, weave shielding layer 8 through setting up the copper wire, control cable core 5 that can guarantee inside signal reception, Temperature measurement optic fibre 6, optical fiber communication line 7 and power cable core 13 do not receive external signal interference, guarantee the transmission rate and the degree of accuracy, through setting up theftproof monitoring line 12, make low smoke and zero halogen cable body 1 receive unusual removal and cutting etc. guarantee that low smoke and zero halogen cable body 1 can monitor by oneself, have solved the problem that current cable does not possess interference immunity and theftproof function.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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 digital transformer substation of smart power grids is with low smoke and zero halogen cable, includes low smoke and zero halogen cable body (1), its characterized in that: a first PTFE (polytetrafluoroethylene) wrapped filling layer (3) is filled in the low-smoke halogen-free cable body (1), a mixed braided grounding conductor (2) is arranged on the inner layer of the low-smoke halogen-free cable body (1), and a rubber protective layer (4) is arranged outside the low-smoke halogen-free cable body (1);

first PTFE has power cable core (13) around the inside fixed mounting of package filling layer (3), first PTFE has control cable core (5) around the inside fixed mounting of package filling layer (3), first PTFE has temperature measurement optic fibre (6) around the inside fixed mounting of package filling layer (3), first PTFE has optic fibre communication line (7) around the inside fixed mounting of package filling layer (3).

2. The low-smoke halogen-free cable for the digital substation of the smart power grid according to claim 1, characterized in that: the inner layer of the low-smoke zero-halogen cable body (1) comprises a copper wire braided shielding layer (8), a waterproof layer (9) and a thin steel wire braided layer (10).

3. The low-smoke halogen-free cable for the digital substation of the smart power grid according to claim 2, is characterized in that: the shielding layer (8) is braided with copper wires as the outermost layer, the fine steel wire braided layer (10) is the innermost layer, and the waterproof layer (9) is positioned between the shielding layer (8) and the fine steel wire braided layer (10).

4. The low-smoke halogen-free cable for the digital substation of the smart power grid according to claim 3, characterized in that: four anti-theft monitoring wires (12) which are uniformly distributed at intervals are embedded in the thin steel wire weaving layer (10).

5. The low-smoke zero-halogen cable for the digital substation of the smart power grid according to claim 4, is characterized in that: the number of the power cable cores (13) is two, and metal heat dissipation layers (11) are arranged outside the power cable cores (13), the control cable cores (5), the temperature measurement optical fibers (6) and the optical fiber communication lines (7).

6. The low-smoke halogen-free cable for the digital substation of the smart power grid according to claim 5, characterized in that: the power cable core (13), the control cable core (5), the temperature measuring optical fibers (6) and the optical fiber communication wires (7) are parallel to each other, five conductor cores are arranged inside the power cable core (13), and the waterproof layer (9) is an asphalt waterproof layer.