CN213424632U - Medium-voltage reel photoelectric composite flexible cable - Google Patents

Abstract

The utility model discloses a middling pressure reel photoelectricity composite flexible cable, aim at solve among the prior art because service environment's particularity leads to the problem that the life of cable is short, including a plurality of thread cores, optical cable and cabling band, the cabling band outside is equipped with inner sheath and oversheath in proper order, still includes a plurality of control sinle silks and a plurality of ground sinle silks, thread core, control sinle silk, ground sinle silk and optical cable are in the same place through the bundling band ligature, still are equipped with between inner sheath and the oversheath and weave the enhancement layer, and the inner sheath is in the same place with the inseparable adhesion of oversheath three layer construction, has increased the tensile strength of cable to effectively improve the life of cable, guaranteed cable fail safe nature.

Description

Medium-voltage reel photoelectric composite flexible cable

Technical Field

The utility model relates to a cable field especially relates to a middling pressure reel photoelectricity composite flexible cable.

Background

The flexible cable drum is used in drum machine, conveyer and drag chain system, and has high compression strength, torsion strength and mechanical stress resistance. With the maturity of electrical control, electronic monitoring and other technologies, a monitoring system using an optical cable for a mobile cable has become a real requirement. The photoelectric composite reel flexible cable is characterized in that an optical cable and a reel cable are compositely applied to the same cable through reasonable structural design, great convenience can be brought to operation, equipment maintenance and the like of the reel cable and a corresponding monitoring system, the photoelectric composite reel flexible cable has the advantages of small outer diameter, light weight, small occupied space and the like, can be applied to wet or dry indoor and outdoor installation, and can be widely applied to facility environments such as water, construction sites and the like. The mechanical equipment for synchronously supplying power to the mobile equipment and automatically reeling the cable is in a severe environment, which puts higher requirements on the performance index of the reel cable, and has very high requirements on the performances of tensile strength, cold resistance, distortion resistance, service life and the like of the cable, and also has very high requirements on system monitoring and data transmission so as to ensure the safe and stable operation of the system.

Chinese patent publication No. CN104916369A, published on 2015, 9.16.the name invented and created is a photoelectric composite distortion-resistant medium-voltage wind energy cable and a preparation method thereof, the specific scheme of the application is that the cable comprises a cable core, a cabling belting layer, an inner sheath layer, an aramid braid layer and an outer sheath layer, the cabling belting layer, the inner sheath layer, the aramid braid layer and the outer sheath layer are sequentially coated outside the cable core; the cable core is formed by twisting three power transmission wire cores, three ground wire cores and optical fiber units, and an optical fiber structure is introduced into the cable, so that the cable core can be better used for signal transmission, has the characteristics and functions of an optical cable through system line resources of the cable core, realizes system operation monitoring, and ensures safe and stable operation of the system. The technical scheme is only suitable for wind energy cables, and cannot achieve the same technical effect in other special environments.

Disclosure of Invention

An object of the utility model is to solve among the prior art because service environment's particularity leads to the short problem of life of cable, provide a middling pressure reel photoelectricity composite flexible cable.

The utility model discloses the technical scheme who adopts does: the utility model provides a middling pressure reel photoelectricity composite flexible cable, includes a plurality of principal cores and the optical cable of being wrapped up by stranding band, and the stranding band outside is equipped with inner sheath and oversheath in proper order, still includes a plurality of control core and a plurality of earth core, control core and earth core distribute in the clearance between stranding band and principal core, still be equipped with between inner sheath and the oversheath and weave the enhancement layer, the inner sheath, weave the enhancement layer and the inseparable adhesion of oversheath three layer construction is in the same place, has increased the tensile strength of cable to effectively improve the life of cable, guaranteed cable fail safe nature.

Preferably, the inner sheath is made of a rubber sheath material with high mechanical strength, so that the cable has excellent mechanical performance and good bending performance, the woven reinforcing layer is made of high-strength aramid fibers to improve the overall mechanical performance of the cable, and the outer sheath is made of a chlorinated polyethylene rubber material with high strength, high wear resistance and high flame retardant property. The number of the optical fiber cores of the optical cable can be determined according to user requirements, the optical fiber can be a single-mode optical fiber or a multi-mode optical fiber, and the high-temperature and high-pressure conditions of the rubber sheath in the extrusion vulcanization process can be met.

Preferably, the cable comprises 3 main wire cores, 2 ground wire cores, 12 control wire cores and an optical cable, wherein the diameters of the ground wire cores are the same as that of the optical cable, the main wire cores, the ground wire cores, the control wire cores and the optical cable are twisted according to a certain structure, the main wire cores are uniformly distributed around the axis position of the medium-voltage reel photoelectric composite flexible cable, the control wire cores are averagely divided into 3 groups, 2 groups of the control wire cores are respectively combined with 1 ground wire core, the other group of the control wire cores are combined with the optical cable, and the 3 groups of the wire cores are respectively distributed in a gap between every two main wire cores and a cabling belt.

Preferably, the main line core comprises a main line conductor, and a conductor wrapping tape, a conductor shielding layer, a main line insulating layer, an insulation shielding layer and a metal shielding layer which are sequentially arranged outside the main line conductor.

Preferably, the main line insulating layer, the conductor shielding layer and the insulation shielding layer are of a three-layer co-extrusion structure which is extruded at the same time at one time, so that the cable is guaranteed to have excellent electrical insulation performance and good mechanical performance.

Preferably, the main line conductor and the control line conductor are made of annealed tinned copper wires, the main line insulating layer and the control line insulating layer are made of ethylene propylene rubber insulating materials, and the metal shielding layer is braided and shielded by the tinned copper wires. The tinned copper wire has good corrosion resistance, is not easy to oxidize and is beneficial to flame retardance.

Preferably, the diameter of the annealed tinned copper wire is not more than 0.51mm, and the minimum bending radius of the annealed tinned copper wire can be as small as 6 times of the outer diameter of the finished cable, so that the cable can normally run when bent.

Preferably, the density of the braided reinforcing layer is not less than 80%, and the braided section can determine the number of braided and the diameter of braided monofilament according to the specification requirement of the ground wire.

The utility model has the advantages that: (1) the utility model places the control wire core, the ground wire core and the optical cable together between the gaps of the main wire core of the cable, and the arrangement is reasonable, thereby reducing the outer diameter of the cable; (2) the braided reinforcing layer is arranged between the inner sheath and the outer sheath, the three-layer structure is tightly adhered together, the tensile strength of the cable is increased, the overall mechanical performance of the cable is improved, the service life of the cable is effectively prolonged, and the safety and reliability of the cable are guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein: 1. the cable comprises a main line conductor, 2, a conductor wrapping tape, 3, a conductor shielding layer, 4, a main line insulating layer, 5, an insulating shielding layer, 6, a metal shielding layer, 7, a cabling wrapping tape, 8, a control line conductor, 9, a control line insulating layer, 10, a ground wire core, 11, an optical cable, 12, an inner sheath, 13, a braided reinforcing layer, 14 and an outer sheath.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, a medium voltage reel photoelectric composite flexible cable includes 3 main cores, 2 ground cores 10, 12 control cores and 1 optical cable 11. The main line core includes thread conductor 1 and conductor band 2, and the conductor band 2 outside is equipped with conductor shielding layer 3, and the 3 outsides of conductor shielding layer are equipped with thread insulating layer 4, and the 4 outsides of thread insulating layer are equipped with insulating shielding layer 5, and the 5 outsides of insulating shielding layer are equipped with metallic shield 6, and thread insulating layer 4, conductor shielding layer 3 and insulating shielding layer 5 are the three-layer coextrusion structure of once only extruding simultaneously. The control line core comprises a control line conductor 8 and a control line insulating layer 9. The main line core, ground core 10, optical cable 11 and control core strand according to certain structure, and the skin has around the covering, and 3 main line cores are along the axle center position evenly distributed of middling pressure reel photoelectricity composite flexible cable, and 12 control core average divide into 3 groups respectively with 2 ground core 10 and optical cable 11 arrange in the clearance between main line core and reel, all sinle silks all tightly wrap up together through stranding band 7. The outer side of the cabling belting 7 is provided with an inner sheath 12, the outer side of the inner sheath 12 is provided with a woven reinforcing layer 13, the outer side of the woven reinforcing layer 13 is provided with an outer sheath 14, and three-layer structures of the inner sheath 12, the woven reinforcing layer 13 and the outer sheath 14 are tightly adhered together, so that the tensile strength of the cable is increased, the service life of the cable is effectively prolonged, and the safety reliability of the cable is ensured.

The main line conductor 1 and the control line core conductor are made of annealed tinned copper wires, the diameters of single wires of the main line conductor and the control line core conductor are not larger than 0.51mm, the minimum bending radius of the main line conductor and the control line core conductor can be as small as 6 times of the outer diameter of a finished cable, and normal operation of the cable in bending is guaranteed. The insulating layer of the wire core is made of ethylene propylene rubber insulating materials with high electrical insulating property and high mechanical strength, so that the cable is ensured to have good electrical insulating property and good mechanical property. The metal shielding layer 6 is braided and shielded by adopting a tinned copper wire, the braided section of the metal shielding layer can determine the number of braided wires and the diameter of the braided monofilaments according to the specification requirement of the grounding wire, and the braided density of the braided layer is not less than 80%. The optical cable 11 adopts high-quality single-mode or multi-mode optical fibers, the number of optical fiber cores and the structure of an optical cable protective layer can be flexibly adjusted according to the use requirement, and the high-temperature and high-pressure conditions of the rubber sheath in the extrusion vulcanization process can be met. The inner sheath 12 is made of a rubber sheath material with high mechanical strength, so that the cable has good mechanical performance and good bending performance. The braided reinforcement layer 13 is made of high-strength aramid fibers to improve the overall mechanical properties of the cable. The outer sheath 14 is made of chlorinated polyethylene rubber material with high strength, high wear resistance and high flame retardant property, and the extrusion coating of the ground wire core 10 is made of semiconductive rubber.

Claims (7)

1. The utility model provides a medium-voltage reel photoelectric composite flexible cable, includes a plurality of thread cores, optical cable (11) and stranding band (7), and the stranding band (7) outside is equipped with inner sheath (12) and oversheath (14) in proper order, its characterized in that still includes a plurality of control core and a plurality of earth core (10), thread core, control core, earth core (10) and optical cable (11) are in the same place through stranding band (7) package ligature, still be equipped with between inner sheath (12) and oversheath (14) and weave enhancement layer (13), inner sheath (12), weave enhancement layer (13) and oversheath (14) three layer construction closely adhere together, rubber sheath material is selected for use in inner sheath (12), it chooses high strength aramid fiber for use to weave enhancement layer (13), chlorinated polyethylene rubber material is selected for use in oversheath (14).

2. The medium-voltage reel photoelectric composite flexible cable according to claim 1, comprising 3 main cable cores, 2 ground cable cores (10), 12 control cable cores and an optical cable (11), wherein the outer diameter of the ground cable cores (10) is the same as that of the optical cable (11), the main cable cores are uniformly distributed around the axial position of the medium-voltage reel photoelectric composite flexible cable, the control cable cores are averagely divided into 3 groups, each group comprises 4 control cable cores, 2 groups are respectively combined with 1 ground cable core, the other group is combined with the optical cable (11), and the 3 groups of the cable cores are respectively distributed in gaps between every two main cable cores and a cabling belt (7).

3. The medium-voltage reel photoelectric composite flexible cable according to claim 1, wherein the main cable core comprises a main line conductor (1), and a conductor wrapping tape (2), a conductor shielding layer (3), a main line insulating layer (4), an insulating shielding layer (5) and a metal shielding layer (6) which are arranged outside the main line conductor (1) in sequence.

4. The medium-voltage reel photoelectric composite flexible cable according to claim 3, wherein the main line insulating layer (4), the conductor shielding layer (3) and the insulation shielding layer (5) are a three-layer co-extrusion structure which is extruded at one time.

5. The medium-voltage reel photoelectric composite flexible cable is characterized in that the main line conductor (1) and the control line conductor (8) are made of annealed tinned copper wires, the main line insulating layer (4) and the control line insulating layer (9) are made of ethylene propylene rubber insulating materials, and the metal shielding layer (6) is braided and shielded by the tinned copper wires.

6. The medium voltage reel photoelectric composite flexible cable according to claim 5, wherein the diameter of the annealed tinned copper wire is not more than 0.51mm, and the minimum bending radius of the annealed tinned copper wire can be as small as 6 times of the outer diameter of a finished cable.

7. The medium voltage reel opto-electric composite flexible cable as claimed in claim 1, characterized in that the density of the braided reinforcement layer (13) is not less than 80%.

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