CN100419921C - Electric power coaxial cable - Google Patents
Electric power coaxial cable Download PDFInfo
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- CN100419921C CN100419921C CNB2006100356933A CN200610035693A CN100419921C CN 100419921 C CN100419921 C CN 100419921C CN B2006100356933 A CNB2006100356933 A CN B2006100356933A CN 200610035693 A CN200610035693 A CN 200610035693A CN 100419921 C CN100419921 C CN 100419921C
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- coaxial cable
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Abstract
The invention discloses a electric source coaxial cable. It consumes energy shortly; is hard to age and be damaged; has long life, low cost and high intensity; signal transmitting effect is good; it is convenient to use. This electric source coaxial cable includes a coaxial cable transmitting radio and video signal and electric source wires that are parallel with the coaxial cable and used to supply electricity. The coaxial cable includes an inner conductor (1), an inner thin layer (2), a foaming layer (3), an outer thin player (4), an aluminum-plastic complex film (5), a braided layer (6). The electric source wires include two conductors (8, 9) forming circuit and the insulating layers (10, 11) of the conductors (8, 9). The coaxial cable and the electric source wire are connected by the outer protective coat. The invention is applied widely in transport network system of cable TV or other cable signal transmitting systems.
Description
Technical field
The present invention relates to a kind of electric power coaxial cable.
Background technology
At present, in cable TV transmission network network system, generally be that to adopt 75 Ω's be coaxial cable, according to the specification difference, be used as TV station respectively, stand and receive main line, service main, branch line and service wire between user's the terminal, the sound of transmission cable television program and image simulation transmission or Digital Transmission.The inner wire of coaxial cable, outer conductor are exactly the loop of transmitting high-frequency signal.Because the D.C. resistance of loop and the existence of characteristic impedance can produce decay in the high-frequency signal transmission process, transmission range is restricted, and just need dispose amplifier in the line for the transmission that reaches the fixed length distance, makes signal gain.For solving the required energy of signal gain, the pair amplifier power supply.
In the cable TV transmission network network generally employing mode of line powering is had two kinds: a kind of supply power mode is a self-powered, promptly transmit the audio frequency of cable TV, the inner wire of the coaxial cable of vision signal, outer conductor are simultaneously also as the loop of line powering, adopt not only carry high frequency but also transmit 50Hz or the AC-powered of 60Hz of the same loop of this kind inner and outer conductor, have following problem and hidden danger of quality.1. owing to the existence of loop resistance in the supply line, alternating current can make the loop heating, the oxidation if any the air existence can make the conductor heating, and the oxidation meeting is accelerated during if any moisture.2. all exist in the circuit and continue or joint, all can make moisture be easy to invade and make the conductor oxidation as not carrying out the protection against the tide processing or dealing with improperly, in this case, self-powered is accelerated oxidation again, makes transmission performance and electric property descend reduction of service life.3. because self-powered is selective to cable outer conductor,, and increase line cost generally without the low price aluminum-magnesium alloy wire.4. adopt inner conductor, outer conductor 50Hz or 60Hz alternating current are scurried in the high-frequency transmission signal easily, cause screen snowflake or rolling striped to occur, influence view reception effect, increase maintenance frequency as current supply circuit.
Another kind of supply power mode is independently-powered or is referred to as to call centrally connected power supply.Adopt power line that this kind supply power mode uses for cable independently, lay respectively.This supply power mode has following deficiency: 1. increase purchase cost.General electric wire the manufacturer highfrequency transmission systems of production audio frequency and video seldom simultaneously coaxial cable and Alternating Current Power Supply cable or electric wire.2. increase laid down cost.Because therefore high-frequency transmission line and ac power supply line need lay for twice for mutually independently, increased the cable laying operation number of times, engineering time, and corresponding facility.3. because of independently-powered circuit is thinner, tensile strength is lower, is prone to problem in wind, rain, snow, has increased the failure rate and the maintenance frequency.4. increased laying-out, influence is neat, as is cable installation in pipe, increases and lays difficulty.
Therefore prior art exists not enough: power consumption is big, and easily aging, the life-span is short, the cost height, and intensity is low, and is fragile, and signal transmission effect is poor, uses inconvenient.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, provides a kind of power consumption little, is difficult for wearing out, and the life-span is long, and cost is low, intensity height, not fragile, and signal transmission effect is good, electric power coaxial cable easy to use.
The technical solution adopted in the present invention is: the power line that is used to power that the present invention includes the coaxial cable that is used to carry audio frequency, vision signal, be arranged in parallel with described coaxial cable, described coaxial cable comprises inner wire, foaming insulation layer and outer conductor, described foaming insulation layer comprises interior thin layer, foaming layer, outer thin layer, described outer conductor comprises aluminum-plastic composite membrane, braid, described interior thin layer, described foaming layer, described outer thin layer, described aluminum-plastic composite membrane, the coaxial successively described inner wire periphery that is arranged at of described volume layer; Described power line comprises two conductors that form current supply circuit and two insulating barriers that are arranged at two described conductor peripheries; Described coaxial cable is connected by oversheath with described power line.
Described oversheath can be made up of the coaxial I sheath that is arranged at described braid periphery, the suspender belt that is arranged at the II sheath of described insulating barrier periphery and connects described I sheath and described II sheath.
Described oversheath also can be made up of the coaxial suspender belt that is arranged at the I sheath of described braid periphery, is arranged at the III sheath of two described insulating barrier peripheries and connects described I sheath and described III sheath respectively.
Described oversheath can also be made up of the IV sheath that is coated on described braid and described insulating barrier periphery.
The invention has the beneficial effects as follows: owing to the present invention includes the power line that is used to power that is useful on the coaxial cable of carrying audio frequency, vision signal, be arranged in parallel with described coaxial cable, can power separately by the conductor in the power line, form the loop conduct electrical power, this conductor can be single copper cash or stranded core, avoided inner conductor, outer conductor transmission signals to play power supply function simultaneously, so it is aging that coaxial cable is difficult for, the life-span is long, and is easy to laying of circuit; Because coaxial cable is provided with interior thin layer, it and inner wire tight bond prevent the not oxidation of moisture intrusion inner wire together, so be difficult for wearing out, the life-span is long, and interior thin layer can be peeled off from inner wire again, conveniently continues; Owing to be provided with foaming layer, foaming layer and interior thin layer bond together, and the foam degrees of this layer plays important effect to the high-frequency transmission performance, because foam degrees is high and evenly, dielectric constant is low, attenuation constant is little, echo is good, so signal transmission effect is good; Owing to be provided with outer thin layer, outer thin layer and foaming insulation layer bond together, and prevent moisture content moisture intrusion foaming insulation layer, make electric property and high-frequency transmission stable performance, so be difficult for wearing out, the life-span is long, and signal transmission effect is good; Owing to be provided with aluminum-plastic composite membrane, aluminum-plastic composite membrane is coated on outside the outer thin layer, plays 100% shielding action, so signal transmission effect is good; Owing to be provided with braid, braid is formed by metal wire knitted, is coated on outside the aluminum-plastic composite membrane, with its common screen that forms, prevents the external electromagnetic wave interference, guarantees the reliability of high-frequency transmission performance; Owing to be provided with oversheath, oversheath plays protective effects such as protection against the tide, anti-mechanical damage, antiultraviolet to each several part in the cable, so be difficult for wearing out, the life-span is long; Oversheath can be the I sheath that is arranged at described braid periphery by coaxial, the suspender belt that is arranged at the II sheath of described insulating barrier periphery and connects described I sheath and described II sheath is formed, it also can be the I sheath that is arranged at described braid periphery by coaxial, the suspender belt that is arranged at the III sheath of two described insulating barrier peripheries respectively and connects described I sheath and described III sheath is formed, can also form by the IV sheath that is coated on described braid and described insulating barrier periphery, can link into an integrated entity coaxial cable and Alternating Current Power Supply cable, strengthened tensile strength, be easy to wiring, little so consume energy, be difficult for aging, life-span is long, cost is low, the intensity height, not fragile, signal transmission effect is poor, and is easy to use.
Description of drawings
Fig. 1 is the structural representation of the specific embodiment of the invention one;
Fig. 2 is the generalized section of the structural representation of the specific embodiment of the invention one;
Fig. 3 is the structural representation of the specific embodiment of the invention two;
Fig. 4 is the structural representation of the specific embodiment of the invention three.
Embodiment
Embodiment one:
As shown in Figure 1 and Figure 2, the power line that is used to power that the present invention includes the coaxial cable that is used to carry audio frequency, vision signal, be arranged with described coaxial cable in parallel.
Described coaxial cable comprises inner wire 1, foaming insulation layer and outer conductor, and foaming insulation layer is made up of interior thin layer 2, foaming layer 3, outer thin layer 4, and described outer conductor is made up of aluminum-plastic composite membrane 5, braid 6.Inner wire 1 adopts the copper cover aluminum inner wire, certainly, can adopt the copper inner wire according to the specification difference, or the copper covered steel inner wire, and its effect is carry high frequency analog signal or Digital Television, data message symbol, transmission frequency bandwidth; Interior thin layer 2 is mixed with the polyolefin material by the stronger sizing of a kind of viscosity, interior thin layer 2 coaxial inner wire 1 peripheries that are arranged on, interior thin layer 2 and inner wire 1 tight bond are together, prevent the not oxidation of moisture intrusion inner wire, prolong cable useful life, thin layer 2 can be peeled off from inner wire 1 periphery again simultaneously, conveniently continues; Thin layer 2 peripheries in foaming layer 3 is arranged on for insulating barrier is coaxial, foaming layer 3 bonds together with interior thin layer 2, and the foam degrees of this layer plays important effect to the high-frequency transmission performance, because foam degrees is high and evenly, dielectric constant is low, attenuation constant is little, echo is good; Outer thin layer 4 coaxial foaming layer 3 peripheries that are arranged on, outer thin layer 4 bonds together with foaming layer 3, prevents moisture content moisture intrusion foaming insulation layer, makes electric property and high-frequency transmission stable performance; Aluminum-plastic composite membrane 5 coaxial outer thin layer 4 peripheries that are arranged on, aluminum-plastic composite membrane 5 is coated on outer thin layer and plays 100% shielding action outward.Braid 6 is formed by metal wire knitted, coaxial aluminum-plastic composite membrane 5 peripheries that are arranged on, and braid 6 is coated on outside the aluminum-plastic composite membrane 5 and its common screen that forms, and prevents the external electromagnetic wave interference, guarantees the reliability of high-frequency transmission performance.
Described power line comprises conductor 8, conductor 10, coaxial insulating barrier 9 and the coaxial insulating barrier 11 that is arranged at described conductor 10 peripheries that is arranged at described conductor 8 peripheries.Conductor 8, conductor 10 are formed the loop conduct electrical power, and conductor 8 and conductor 10 can be that single copper cash is formed, and also can adopt stranded core as required certainly.Insulating barrier 9, insulating barrier 11 play respectively conductor 8, conductor 10 insulation protection effects, guarantee safe power supply.
In the present embodiment, form the conductor 8 of cable loop and the same side that conductor 10 is arranged at coaxial cable, accordingly, described oversheath is made up of the coaxial I sheath 7 that is arranged at described braid 6 peripheries, the suspender belt 13 that is arranged at the II sheath 12 of described insulating barrier 9 and 11 peripheries and is connected described I sheath 7 and described II sheath 12.I sheath 7 is coated on the periphery of braid 6, and each several part plays protective effects such as protection against the tide, anti-mechanical damage, antiultraviolet in 7 pairs of cables of I sheath; II sheath 12 is the oversheath of power line conductor 8 and 10, and the periphery that II sheath 12 is arranged on insulating barrier 9, insulating barrier 11 is connected and fixed insulating barrier 9, insulating barrier 11, and power line is played a protective role, moistureproof, anti-mechanical damage, antiultraviolet etc.Suspender belt 13 is II sheath 12 and I sheath 7 is connected and fixed and make digital cable and power line form one.
Coaxial cable of the present invention and power line form one; power line can be by the intensity of digital cable; play the intensity that strengthens digital cable simultaneously; one time stringing just can be finished the circuit setting, and convenient and easy during the construction of line, it is low to set up cost; because power line separates with data wire; protected data wire and data-signal, is maintained the useful life of data wire, data-signal is not disturbed simultaneously.
Embodiment two:
As shown in Figure 3, in the present embodiment, form the conductor 8 of cable loop and the both sides that conductor 10 is arranged at coaxial cable respectively, accordingly, described oversheath is made up of the coaxial suspender belt 13 that is arranged at the I sheath 7 of described braid 6 peripheries, is arranged at the III sheath 14 of described insulating barrier 9 and 11 peripheries and is connected described I sheath 7 and described III sheath 14 respectively.Other structure of present embodiment is identical with embodiment one.
Embodiment three:
As shown in Figure 4, in the present embodiment, described oversheath also can be made up of the IV sheath 15 that is coated on described braid 6 and described insulating barrier 9,11 peripheries.Other structure of present embodiment is identical with embodiment two.
Claims (4)
1. electric power coaxial cable, it comprises and is used to carry audio frequency, the coaxial cable of vision signal, the power line that is used to power that be arranged in parallel with described coaxial cable, described coaxial cable comprises inner wire (1), foaming insulation layer and outer conductor, it is characterized in that: described foaming insulation layer comprises interior thin layer (2), foaming layer (3), outer thin layer (4), described outer conductor comprises aluminum-plastic composite membrane (5), braid (6), described interior thin layer (2), described foaming layer (3), described outer thin layer (4), described aluminum-plastic composite membrane (5), coaxial successively described inner wire (1) periphery that is arranged at of described braid (6); Described power line comprises two conductors (8,10) that form current supply circuit and is arranged at peripheral two insulating barriers (9,11) of two described conductors (8,10); Described coaxial cable is connected by oversheath with described power line.
2. electric power coaxial cable according to claim 1 is characterized in that: described oversheath is arranged at the peripheral I sheath (7) of described braid (6), is arranged at the peripheral II sheath (12) of described insulating barrier (9,11) and connects described I sheath (7) and the suspender belt (13) of described II sheath (12) is formed by coaxial.
3. electric power coaxial cable according to claim 1 is characterized in that: described oversheath is by coaxially being arranged at the peripheral I sheath (7) of described braid (6), being arranged at the peripheral III sheath (14) of two described insulating barriers (9,11) and connect described I sheath (7) and the suspender belt (13) of described III sheath (14) is formed respectively.
4. electric power coaxial cable according to claim 1 is characterized in that: described oversheath is formed by being coated on the peripheral IV sheath (15) of described braid (6) and described insulating barrier (9,11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100356933A CN100419921C (en) | 2006-05-30 | 2006-05-30 | Electric power coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100356933A CN100419921C (en) | 2006-05-30 | 2006-05-30 | Electric power coaxial cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1889199A CN1889199A (en) | 2007-01-03 |
| CN100419921C true CN100419921C (en) | 2008-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100356933A Expired - Fee Related CN100419921C (en) | 2006-05-30 | 2006-05-30 | Electric power coaxial cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN100419921C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013284A (en) * | 2010-10-13 | 2011-04-13 | 珠海宇讯同轴电缆有限公司 | Damp-proof type coaxial cable and processing technique thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222545A (en) * | 2011-06-22 | 2011-10-19 | 珠海宇讯同轴电缆有限公司 | Coaxial cable and production process thereof |
| CN103440908A (en) * | 2013-08-02 | 2013-12-11 | 珠海宇讯同轴电缆有限公司 | Audio and video data power supply network cable |
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| CN2777711Y (en) * | 2005-03-07 | 2006-05-03 | 刘金龙 | Special cable |
| CN2914263Y (en) * | 2006-05-30 | 2007-06-20 | 珠海宇讯同轴电缆有限公司 | Electrical source coaxial cable |
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2006
- 2006-05-30 CN CNB2006100356933A patent/CN100419921C/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6765150B2 (en) * | 2002-08-06 | 2004-07-20 | Angus Hsieh | Signal transmission cable structure |
| CN2604764Y (en) * | 2003-02-19 | 2004-02-25 | 金桥科技股份有限公司 | Composite wire structure |
| CN2615828Y (en) * | 2003-05-09 | 2004-05-12 | 扬州亚光电缆有限公司 | Flat cable |
| CN1514447A (en) * | 2003-08-04 | 2004-07-21 | 煤炭科学研究总院抚顺分院 | Multifunctional bundle pipe cable wire |
| CN2671081Y (en) * | 2003-11-30 | 2005-01-12 | 湘潭市特种线缆厂 | Electric cables for high and low frequencies |
| CN2686049Y (en) * | 2004-03-19 | 2005-03-16 | 佛山市顺德区昌宝通讯电缆电线有限公司 | Elevator video-frequency monitoring cable |
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| CN1737951A (en) * | 2005-09-07 | 2006-02-22 | 上海乐庭电线工业有限公司 | Multimedia combination cable for elevator |
| CN2914263Y (en) * | 2006-05-30 | 2007-06-20 | 珠海宇讯同轴电缆有限公司 | Electrical source coaxial cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013284A (en) * | 2010-10-13 | 2011-04-13 | 珠海宇讯同轴电缆有限公司 | Damp-proof type coaxial cable and processing technique thereof |
| CN102013284B (en) * | 2010-10-13 | 2012-12-12 | 珠海宇讯同轴电缆有限公司 | Damp-proof type coaxial cable and processing technique thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1889199A (en) | 2007-01-03 |
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Granted publication date: 20080917 Termination date: 20200530 |