Tensile creep-resistant overhead photoelectric composite cable

Abstract

The invention discloses a tensile creep-resistant overhead photoelectric composite cable, which belongs to the technical field of communication and comprises an optical cable arranged in the center and capable of transmitting information, a protection device arranged on the outer side of the optical cable and detection devices connected with the optical cable at intervals. The protection device comprises an aluminum-clad steel pipe, an aluminum-clad steel wire and an aluminum alloy wire from the inner layer to the outer side, the aluminum-clad steel pipe wraps the outer side of the optical cable, and the detection device comprises a light source module, a light detector, a time base control module and a processing module; the detection device can detect a fault point of the optical cable. According to the optical cable protection device, the protection device has high tensile strength and torsion resistance, tensile and bending stress borne by the internal optical cable in the using and transporting process can be resisted, the overall mechanical strength of the optical cable can be improved, creep deformation can be reduced, the detection device can detect fault points of the optical cable, and the safety of the optical cable is improved. The optical cable is ensured not to be stretched and creeped in the using process, and the fault point of the optical cable can be rapidly detected.

Description

Technical Field

[0001] The invention relates to an overhead photoelectric composite cable with tensile and creep resistance, belonging to the technical field of communication. Background Art

[0002] In the field of communication technology, optical cable communication has the advantages of fast speed and good transmission quality. The application of optical cable communication is becoming more and more extensive, and human information transmission is becoming more and more inseparable from optical cables. Compared with underground optical cables, overhead optical cables do not require complicated excavation work and have lower costs; overhead optical cables can be installed using poles, shortening the construction period and speeding up construction; overhead optical cables do not contain metal conductors and are not easily affected by electromagnetic interference, ensuring the purity of signal transmission.

[0003] Overhead cables are also used in the field of communication technology. They are widely used in the field of communication because they do not require ground construction during installation, are easy to observe during maintenance, and have good heat dissipation during use. Overhead optical cable laying can utilize existing overhead power poles.

[0004] At present, during the use of overhead optical cables, because they are installed outdoors, they are easily affected by rain, snow, wind and frost. Rain, moisture or other liquids enter the optical cable, and the moisture affects the performance of the optical cable, resulting in signal attenuation and other signal quality problems; the overhead optical cable is prone to creep after long-term use; when the overhead optical cable is installed on the original electric pole, the matching gap between the original wires and the optical cable is too large, affecting the use of the original wires and the newly installed optical cable, and interfering with signal transmission; when an accident occurs in the overhead optical cable, it is not easy to determine the fault and the fault location. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an aerial photoelectric composite cable that is resistant to tension and creep, which solves the problems that the aerial optical cable is greatly affected by moisture in the environment, the aerial optical cable is prone to creep, the aerial optical cable and the electrical cable do not match well, and the fault is difficult to identify.

[0006] The technical problem to be solved by the present invention is achieved by adopting the following technical solution: an overhead photoelectric composite cable with tensile and creep resistance, comprising

[0007] An optical cable is arranged at the center, which is capable of transmitting information,

[0008] A protection device disposed on the outside of the optical cable, and a detection device connected to the optical cable at intervals;

[0009] The protective device comprises an aluminum-clad steel tube, an aluminum-clad steel wire, and an aluminum alloy wire from the inner layer to the outer layer, wherein the aluminum-clad steel tube is wrapped around the outer side of the optical cable, the aluminum-clad steel wire is multiple, and the aluminum alloy wire is multiple;

[0010] The detection device includes a light source module, a light detector, a time base control module, and a processing module; the time base control module can control the light source module to emit a pulse signal, the light detector can receive the pulse signal and transmit it to the processing module, and the processing module can set the time base control module to process the signal received by the light detector; the detection device can detect the fault point of the optical cable;

[0011] The detection device is capable of detecting a fault point of the optical cable.

[0012] Preferably, the outer side of the optical cable includes a sheath, and grease is provided between the optical cable and the sheath, and the grease and the sheath can protect the optical cable from being affected by moisture.

[0013] Preferably, the aluminum-clad steel pipe is wrapped around the outside of the sheath, and the sheath comprises polyethylene.

[0014] Preferably, the aluminum-clad steel wire and the aluminum alloy wire are electrically conductive.

[0015] Preferably, the aluminum-clad steel tube protects the optical cable from being stretched or squeezed; the aluminum-clad steel wire bears the tensile strength of the overhead photovoltaic composite cable; and the aluminum alloy wire bears the creep resistance of the overhead photovoltaic composite cable.

[0016] Preferably, the aluminum-clad steel wire and the aluminum alloy wire are twisted and arranged outside the aluminum-clad steel tube.

[0017] Preferably, one detection device is arranged at intervals of 3-6 km along the optical cable.

[0018] Preferably, the light source module includes a laser diode and a light emitting diode.

[0019] The beneficial effects of the present invention are:

[0020] (1) Through the present invention, the outer side of the optical cable includes a sheath, a grease is arranged between the optical cable and the sheath, an aluminum-clad steel tube is arranged on the outside of the optical cable, and a sheath is arranged between the optical cable and the aluminum-clad steel tube. The grease is used as a waterproof material and is filled in the space inside and around the optical cable to prevent moisture from entering the optical cable. The grease has good adhesion, sealing and moisture-proof properties and can remain stable during long-term use. The sheath is arranged between the optical cable and the aluminum-clad steel tube, which can protect the structure of the optical cable and prevent damage from external factors such as mechanical wear, chemical corrosion or ultraviolet aging. It can also further enhance the waterproof performance and cooperate with the grease to ensure that moisture does not penetrate into the core part of the optical cable. The aluminum-clad steel tube provides mechanical protection for the optical cable and can effectively prevent the external environment from causing physical damage to the optical cable, such as stretching, bending or extrusion. The aluminum-clad steel tube also has a certain anti-corrosion ability to protect the optical cable from damage by the external environment.

[0021] (2) Through the present invention, aluminum-clad steel wires and aluminum alloy wires are arranged on the outside of the optical cable, wherein the aluminum-clad steel wires and the aluminum alloy wires are both conductive, and the aluminum-clad steel wires are twisted and arranged on the outside of the optical cable, and the aluminum alloy wires are twisted and arranged on the outside of the aluminum-clad steel wires. The aluminum-clad steel wires have strong tensile strength and torsional resistance, and can withstand the tensile and bending stresses to which the internal optical cable is subjected during use and transportation, and can improve the overall mechanical strength of the optical cable. Compared with ordinary cables, aluminum alloy wires are lighter, reducing the overall weight of the optical cable, and are convenient for laying and maintenance. At the same time, during the manufacturing process of the aluminum alloy wires, some elements are added, which can improve the strength and hardness of the aluminum matrix. The alloy elements limit the sliding of the grain boundaries by forming fine metal phases, thereby reducing the occurrence of creep deformation. Aluminum-clad steel wires and aluminum alloy wires are conductive, which improves the space utilization efficiency and energy transmission efficiency.

[0022] (3) Through the present invention, a detection device is arranged at a certain distance, and the detection device includes a light source module, a light detector, a time base control module, and a processing module. The detection device can detect the breakpoint, loss, and fault of the optical cable, and can ensure that the optical cable can find faults in time during installation and use, and can accurately locate the fault point, which is convenient for the staff to install, use, and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a cross-sectional schematic diagram of the present invention.

[0025] Figure 3 It is a schematic diagram of the working process of the detection device of the present invention.

[0026] In the figure: 11-optical cable, 12-sheath, 13-aluminum-clad steel pipe, 2-aluminum-clad steel wire, 3-aluminum alloy wire, 4-detection device, 41-processing module, 42-time base control module, 43-light source module, 44-light detector. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

[0028] Example 1

[0029] Overhead optical cables are optical cables hung on electric poles. The laying method of overhead optical cables can utilize the existing overhead open wire poles. Half of them are used for long-distance secondary or lower lines, suitable for dedicated optical cable lines or some local special areas. The current optical cables are easily damaged by stretching during installation, and are prone to creep and breakage after long-term use.

[0030] like Figure 1-Figure 2 As shown, a tensile and creep-resistant overhead optoelectronic composite cable includes an optical cable 11 arranged in the center, and the optical cable 11 can transmit information.

[0031] A protective device is arranged outside the optical cable 11, and the optical cable 11 is arranged in an overhead manner. On the optical cable 11, a detection device 4 is arranged at intervals. The protective device can protect the optical cable 11, and the detection device 4 can detect faults of the optical cable.

[0032] In this embodiment, the protective device includes an aluminum-clad steel tube 13, an aluminum-clad steel wire 2, and an aluminum alloy wire 3, wherein the aluminum-clad steel tube 13 is arranged on the outside of the optical cable 11 in a wrapped manner, there are multiple aluminum-clad steel wires 2, and there are multiple aluminum alloy wires 3.

[0033] The detection device 4 is arranged at one end of the optical cable 11. The detection device 4 comprises a light source module 43, a light detector 44, a time base control module 42, and a processing module 41, wherein the time base control module 42 can control the light source module 43 to release a pulse signal, and the light detector 44 can receive the pulse signal and transmit it to the processing module 41. The detection device 4 can detect the fault point of the optical cable 11.

[0034] The optical cable 11 is composed of a plurality of optical fiber cores, which are responsible for transmitting optical signals. The optical fiber cores are generally made of quartz glass or plastic. In this embodiment, the optical cable 11 is composed of a plurality of optical fiber cores made of quartz glass.

[0035] The surface of the optical cable 11 is coated with ointment, which is widely used in the manufacture and maintenance of optical cables. The main types of optical cable ointment include non-drip ointment, gel-type ointment, and low-temperature ointment. The ointment is selected as needed according to the actual use. In this embodiment, the ointment adopts non-drip ointment. It is filled in the space inside and around the optical cable to prevent moisture from entering the optical cable and keep it stable during long-term use. A sheath 12 is provided on the outside of the optical cable, and the sheath 12 includes polyethylene. The sheath 12 can protect the structure of the optical cable, prevent mechanical wear, chemical corrosion, ultraviolet aging and other external factors, and can further enhance the waterproof performance, and cooperate with the ointment to ensure that moisture does not penetrate into the core part of the optical cable 11.

[0036] Reference Figure 1 The aluminum-clad steel tube 13 is wrapped around the outside of the sheath 12. The aluminum-clad steel tube provides mechanical protection for the optical cable and can effectively prevent the external environment from causing physical damage to the optical cable, such as stretching, bending or extrusion. The aluminum-clad steel tube also has a certain anti-corrosion ability to protect the optical cable from the external environment.

[0037] An aluminum-clad steel wire 2 is arranged on the outside of the optical cable 11. In the present embodiment, the aluminum-clad steel wire 2 includes an internal steel core and an outer aluminum layer. The steel core inside the aluminum-clad steel wire 2 is one, and the outer surface of the steel core is covered with an outer aluminum layer. The steel core can provide mechanical strength and tensile resistance, increase the overall tensile strength of the optical cable, and enable it to withstand external pulling and tension when it is overhead. The steel core is usually made of high-strength carbon steel or galvanized steel to provide the necessary strength and corrosion resistance. The aluminum-clad steel wire 2 can conduct electricity, and the outermost layer of the aluminum-clad steel wire 2 is an aluminum layer. The aluminum layer can be processed to obtain an aluminum oxide layer with good insulation effect, which can prevent the surface of the aluminum-clad steel wire 2 from being charged, and avoid electric shock accidents caused by accidentally touching the aluminum-clad steel wire 2.

[0038] An aluminum alloy wire 3 is arranged on the outside of the aluminum clad steel wire 2. The aluminum alloy wire 3 is conductive and bears the anti-creep of the entire optoelectronic composite cable. During the use of the optical cable 11, the aluminum clad steel tube 13, and the aluminum clad steel wire 2, due to the overhead setting, the entirety is continuously subjected to the effect of gravity, which is prone to creep, and the overall structure is prone to deformation, affecting the transmission performance of the optical cable 11. An aluminum alloy wire 3 is arranged on the outside of the aluminum clad steel wire 2. During the manufacturing process, some elements are added to the aluminum alloy wire 3 to form an aluminum alloy, which can improve the strength and hardness of the aluminum matrix. The alloy elements limit the sliding of the grain boundaries by forming fine metal phases, thereby reducing the occurrence of creep deformation. Therefore, the aluminum alloy wire 3 is twisted and arranged on the outside of the aluminum clad steel wire 2, which can provide a certain support force for the internal optical cable 11, the aluminum clad steel tube 13, and the aluminum clad steel wire 2 to prevent the optoelectronic composite cable from creeping as a whole.

[0039] Reference Figure 1 , Figure 2 There are multiple aluminum-clad steel wires 2 and aluminum alloy wires 3, all of which are arranged on the outside of the aluminum-clad steel tube 13 in a twisted manner. In this embodiment, there are 10 aluminum-clad steel wires 2 and 15 aluminum alloy wires 3, and the aluminum-clad steel wires 2 and the aluminum alloy wires 3 are twisted in the right direction.

[0040] As another embodiment, the aluminum clad steel wire 2 and the aluminum alloy wire 3 are twisted in a left direction.

[0041] When an accident occurs in an overhead optical cable, it is necessary to quickly determine the location of the accident. Therefore, a detection device 4 is provided at intervals on the optical cable 11.

[0042] Reference Figure 3The detection device 4 includes a processing module 41, a time base control module 42, a light source module 43, and a light detector 44. The processing module 41 can control the time base control module 42, and can detect and identify the signal received by the light detector 44; the time base control module 42 can record the time difference from the light source emitting a pulse to the light signal returning through the processing module, and control the light source module 43 to emit a light pulse signal; the light source module 43 can emit a light pulse signal; and the light detector 44 can detect the light pulse signal emitted by the light source module 43.

[0043] The light source module 43 includes a laser diode and a light emitting diode. In this embodiment, the light source module 43 uses a laser diode.

[0044] The timing control module 42 includes a timing circuit, and the timing control module 42 is connected to the light source module 43. The processing module 41 can set the timing control module 42 to control the light source module 43 to emit pulses. At the same time, the timing control module 42 records the time difference from the light source emitting pulses to the light signal returning.

[0045] The light detector 44 includes a photodiode, and can convert the reflected light signal into an electrical signal and transmit the electrical signal to the processing module 41 .

[0046] The processing module 41 can process the time difference between the light source emitting pulse and the light signal returning recorded by the time base control module 42 and the electrical signal transmitted by the light detector 44, and produce a chart based on this information to determine the location of the optical cable fault.

[0047] The optical cable 11 is provided with an optical fiber interface, which extends from the inside to the outside of the aluminum alloy wire 3, and is provided with a protective cover to protect the optical fiber interface. The light source module 43 can be connected to the optical fiber interface, so that the detection device 4 is connected to the optical cable 11 to detect the optical cable 11. When no fault occurs, the detection device 4 is not connected to the optical cable 11 to prevent the detection device 4 from affecting the information transmission of the optical cable 11.

[0048] A detection device 4 is provided on the optical cable 11 at intervals of 3-6 km. In the present embodiment, a detection device 4 is provided at intervals of 5 km.

[0049] As another embodiment, there are only 1-2 detection devices 4; and an optical fiber interface is provided on the optical cable 11 every 5 km.

[0050] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tensile and creep-resistant overhead optical-electric composite cable, comprising: An optical cable is arranged at the center, which is capable of transmitting information, Features: A protection device disposed on the outside of the optical cable, and a detection device connected to the optical cable at intervals; The protective device comprises an aluminum-clad steel tube, an aluminum-clad steel wire, and an aluminum alloy wire from the inner layer to the outer layer, wherein the aluminum-clad steel tube is wrapped around the outer side of the optical cable, the aluminum-clad steel wire is multiple, and the aluminum alloy wire is multiple; The detection device includes a light source module, a light detector, a timing control module, and a processing module; the timing control module can control the light source module to emit a pulse signal, the light detector can receive the pulse signal and transmit it to the processing module, and the processing module can set the timing control module to process the signal received by the light detector; the detection device can detect the fault point of the optical cable.

2. The tensile and creep-resistant overhead optical-electric composite cable according to claim 1, characterized in that: The outer side of the optical cable includes a sheath, and grease is arranged between the optical cable and the sheath, and the grease and the sheath can protect the optical cable from being affected by moisture.

3. The tensile and creep-resistant overhead photovoltaic composite cable according to claim 2, characterized in that: The aluminum-clad steel pipe is wrapped around the outside of the sheath, and the sheath includes polyethylene.

4. The tensile and creep-resistant overhead optical-electric composite cable according to claim 1, characterized in that: The aluminum-clad steel wire and the aluminum alloy wire are capable of conducting electricity.

5. The tensile and creep-resistant overhead photovoltaic composite cable according to claim 1, characterized in that: The aluminum-clad steel pipe protects the optical cable from being stretched or squeezed; the aluminum-clad steel wire bears the tensile strength of the overhead photovoltaic composite cable; and the aluminum alloy wire bears the creep resistance of the overhead photovoltaic composite cable.

6. The tensile and creep-resistant overhead optical-electric composite cable according to any one of claims 4 to 5, characterized in that: The aluminum-clad steel wire and the aluminum alloy wire are twisted and arranged outside the aluminum-clad steel tube.

7. The tensile and creep-resistant overhead photovoltaic composite cable according to claim 1, characterized in that: The optical cable is provided with a detection device every 3-6 km.

8. The tensile and creep-resistant overhead photovoltaic composite cable according to claim 1, characterized in that: The light source module includes a laser diode and a light emitting diode.

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