CN206271445U - One kind communication, monitoring cable - Google Patents

Abstract

One kind communication, monitoring cable, including multigroup insulated wire pair, the insulated wire include conductor and PE insulating barriers to being provided with two insulated wire cores, the insulated wire cores；Ointment is filled between the insulated wire pair, PET strip, MDPE inner sheaths, copper strips, lead set and the first non-woven fabrics belting layer is coated with successively outside insulated wire pair, steel wire armor layer is externally provided with the first non-woven fabrics belting layer.In the utility model, 20 groups of insulated wires in copper strips and lead set and wire armoring unit, realize the electrostatic and magnetic shielding of cable to common stranding, it is ensured that signal stabilization transmission is interference-free, bearing steel wires receive mechanical external force simultaneously, are prevented effectively from outer bound pair core and cause to damage.

Description

One kind communication, monitoring cable

Technical field

The utility model is related to a kind of cable, especially a kind of communication, monitoring cable.

Background technology

It is monitoring circuit ruuning situation when ultra-high-tension power transmission line lays, master control room understands circuit operation conditions at any time, along height Pressure transmission line monitors and guide cable parallel lay-up.But be struck by lightning when ultra-high-tension power transmission line, occur switching overvoltage or When failure punctures, larger induced voltage is will appear from neighbouring monitoring and guide cable, typically can reach 15kV or so.Simultaneously Above-mentioned monitoring and guide cable each pair core are responsible for the different signal of transmission, different electric device actions are controlled, to avoid letter Interfered between number, special design structure need to be used, it is ensured that signal transmission it is accurate.Therefore it is parallel along ultra-high-tension power transmission line Monitoring/the guide cable for laying, it is impossible to common control signal cable is used, except conductor and insulation size external diameter, line are to process Pitch answers precise control, it is ensured that signal is undistorted, not outside interaction crosstalk, in addition it is also necessary to using copper strips+lead set electrostatic screen and steel wire Magnetic shielding is combined, and effectively shields the electromagnetic field that high-tension line is produced, it is ensured that monitoring and signal of communication are interference-free, it is ensured that Power distribution equipment normal work.

General control cable is only capable of bearing the induced voltage of 3kV or so, and single metallic shielding structure cannot be effective Shielding ultra-high-tension power transmission line electromagnetic field effects, it is impossible to for ultra-high-tension power transmission line.And the project cable can bear 15KV or so senses Voltage is answered, can be used for ultra-high-tension power transmission line.

The content of the invention

Technical problem to be solved in the utility model is to provide a kind of communication, monitoring cable, it is ensured that cable core unit Normal operation, signal stabilization transmission.

In order to solve the above technical problems, the technical scheme that the utility model is used is：One kind communication, monitoring cable, bag Multigroup insulated wire pair is included, the insulated wire includes conductor and PE insulating barriers to being provided with two insulated wire cores, the insulated wire cores；Institute State between insulated wire pair filled with ointment, be coated with successively outside insulated wire pair PET strip, MDPE inner sheaths, copper strips, lead set and First non-woven fabrics belting layer, steel wire armor layer is externally provided with the first non-woven fabrics belting layer.

Preferably, the steel wire armor layer is located at the inside of bitumen layer.

Preferably, the bitumen layer is externally provided with the second non-woven fabrics belting layer and oversheath.

Preferably, the insulated wire is to there is 20 groups.

Preferably, the twisting pitch of the adjacent insulated wire pair is different.

Preferably, the bitumen layer uses anti-water complex pitch.

Preferably, the cable and high voltage power cable parallel lay-up.

A kind of communication, monitoring cable that the utility model is provided, have the advantages that：

1st, the wrapped PET strip of cable core external series gap, cable core factice for filling is the longitudinal water-blocking characteristic for realizing cable.

2nd, insulation thickness and external diameter precise control, each adjacent lines are to using different pair twist pitches, it is ensured that cable during 1kHz Mutual capacitance is not more than 54nF/km, and within capacity unmbalance can reach 20pF/500m between line pair, decay is not more than 0.5 dB/ km。

3rd, cable core peripheral hardware copper strips is wrapped and extrusion lead sheath electrostatic screen layer plus wire armoring magnetic shielding layer are：When super When ultra-high-tension power transmission line is short-circuited, the electromagnetic field of high-tension cable generation can be effectively shielded.Additionally, steel wire armor layer can bear Larger mechanical external force, can effectively protect lead set and cable core internal structure injury-free.

4th, once mounting is only needed to lay, you can to ensure the stability of line signal transmission to greatest extent, save tradition Control and time and the expense of signal cable later maintenance and replacing, effectively reduce every cost.

Brief description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and examples：

Fig. 1 is structural representation of the present utility model；

In figure：Conductor 1, PE insulating barriers 2, ointment 3, PET strip 4, MDPE inner sheaths 5, copper strips 6, lead set 7, the first non-woven fabrics Belting layer 8, steel wire armor layer 9, bitumen layer 10, the second non-woven fabrics belting layer 11, oversheath 12.Specific embodiment

As in Fig. 1, one kind communicates, monitoring cable, including multigroup insulated wire pair, the insulated wire is to being provided with two insulated wires Core, the insulated wire cores include conductor 1 and PE insulating barriers 2；Ointment 3 is filled between the insulated wire pair, in insulated wire to it It is outer to be coated with PET strip 4, MDPE inner sheaths 5, copper strips 6, lead set 7 and the first non-woven fabrics belting layer 8 successively, in the first non-woven fabrics bag Belt 8 is externally provided with steel wire armor layer 9.Ointment 3 is placed in insulated wire to space as water blocking layer, has the one layer of leading of copper strips 6 set 7 to make outward It is electrostatic screen, steel wire armor layer 9 is combined as magnetic shielding.So as to the electromagnetic field that effectively shielding high-tension cable is produced, Ensure that signal of communication is interference-free, stabilization transmission.The disposable electrostatic screen and magnetic shielding for realizing cable：Using copper strips weight Lap wound bag shields+extrudes lead sheath+wire armoring, and 0.1 is no more than during preferable screening factor 1kHz, effectively the electricity around shielding Magnetic field, it is ensured that signal stabilization is transmitted.

Preferably, the steel wire armor layer 9 is located at the inside of bitumen layer 10.Preferably, the bitumen layer 10 uses waterproof Compound pitch.

Preferably, the bitumen layer 10 is externally provided with the second non-woven fabrics belting layer 11 and oversheath 12.

Preferably, the insulated wire is to there is 20 groups.Preferably, the twisting pitch of the adjacent insulated wire pair is different. Except resistance to pressure request is high（Bear exchange 15kV/1min pressure-resistant）In addition, it is also contemplated that electric capacity, particularly capacity unmbalance control exist Within 20pF/500m, primarily to ensure that the attenuation constant of communication/monitoring cable, phase-shift constant and wave impedance meet using It is required that, significantly reduce the signal interference between transmitting procedure center line pair.

Preferably, the cable and high voltage power cable parallel lay-up.Exchange 15kV/1min can be born pressure-resistant.

In the utility model, 20 groups of insulated wires to common stranding in copper strips and lead set and wire armoring unit, it is real The electrostatic and magnetic shielding of cable are showed, it is ensured that signal stabilization transmission is interference-free, while bearing steel wires receive mechanical external force, effectively keeps away Exempt from outer bound pair core to cause to damage.

The above embodiments are only optimal technical scheme of the present utility model, and are not construed as limit of the present utility model System, the technical scheme that protection domain of the present utility model should be recorded with claim, including the technical scheme that claim is recorded The equivalents of middle technical characteristic are protection domain.Equivalent i.e. within this range is improved, also in the utility model Protection domain within.

Claims (7)

1. It is 1. a kind of to communicate, monitor cable, it is characterised in that：Including multigroup insulated wire pair, the insulated wire is to being provided with two insulation Core, the insulated wire cores include conductor（1）With PE insulating barriers（2）；Ointment is filled between the insulated wire pair（3）, exhausted PET strip is coated with successively outside edge line pair（4）, MDPE inner sheaths（5）, copper strips（6）, lead set（7）And the first non-woven fabrics belting layer （8）, in the first non-woven fabrics belting layer（8）It is externally provided with steel wire armor layer（9）.
2. It is 2. a kind of according to claim 1 to communicate, monitor cable, it is characterised in that：The steel wire armor layer（9）Located at pitch Layer（10）Inside.
3. It is 3. a kind of according to claim 2 to communicate, monitor cable, it is characterised in that：The bitumen layer（10）It is externally provided with second Non-woven fabrics belting layer（11）And oversheath（12）.
4. It is 4. a kind of according to claim 1 to communicate, monitor cable, it is characterised in that：The insulated wire is to there is 20 groups.
5. It is 5. a kind of according to claim 1 to communicate, monitor cable, it is characterised in that：The stranded section of the adjacent insulated wire pair Away from different.
6. It is 6. a kind of according to claim 2 to communicate, monitor cable, it is characterised in that：The bitumen layer（10）It is multiple using waterproof Compound pitch.
7. It is 7. a kind of according to claim 1 to communicate, monitor cable, it is characterised in that：The cable is put down with high voltage power cable Row lays.