CN111584135A - Intelligent temperature-measuring rat-proof and termite-proof cable and preparation method thereof - Google Patents
Intelligent temperature-measuring rat-proof and termite-proof cable and preparation method thereof Download PDFInfo
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- CN111584135A CN111584135A CN202010547518.2A CN202010547518A CN111584135A CN 111584135 A CN111584135 A CN 111584135A CN 202010547518 A CN202010547518 A CN 202010547518A CN 111584135 A CN111584135 A CN 111584135A
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- H—ELECTRICITY
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- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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- H—ELECTRICITY
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- H01B7/00—Insulated conductors or cables characterised by their form
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- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
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- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
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- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The invention provides an intelligent temperature-measuring rat-proof and termite-proof cable and a preparation method thereof. The cable includes: the cable core and the coating sheath; the coating sheath mainly comprises an outer protective layer and a rat and ant prevention layer; and a temperature measuring component is filled between the coating sheath and the cable core, and the temperature measuring component mainly comprises a non-hygroscopic material filler and an optical fiber tube. According to the invention, the non-hygroscopic material filler with the optical fiber tube inside is filled between the insulated wire cores, and the optical fiber tube is twisted to a position close to the conductor, so that the temperature can be measured and the optical fiber can be protected; compared with the common rat and ant prevention additive, the nylon sheath has the function of environmental protection, and does not pollute the environment; therefore, the power cable has an excellent rat and ant prevention effect, and can accurately measure the temperature of the cable.
Description
Technical Field
The invention relates to the technical field of power cables, and particularly provides an intelligent temperature-measuring rat-proof and termite-proof cable and a preparation method thereof.
Background
The crosslinked polyethylene insulated power cable has been widely used due to a series of advantages of good electrical performance, relatively simple laying and installation, convenient operation and maintenance, and the like. However, as the number of the cable sheath used increases, the problem of biological damage to the cable sheath becomes more and more prominent, especially the problem of rat and ant prevention of the cable, and rodent animals such as rat and termite often bite through the cable sheath. The damage of the outer sheath enables the corrugated aluminum sheath to generate multipoint grounding, the electromagnetic induction of conductor current in the operation process enables the circulation of the metal sheath of the cable to be increased, and the transmission capacity of the line is reduced. Meanwhile, the damage of the outer sheath causes the corrugated aluminum sheath of the inner layer to be corroded by the surrounding environment for a long time, so that the main insulation is damaged until the insulation is broken down or even exploded, the cable line is subjected to permanent fault, and the normal use of the cable is influenced. At present, the conventional method is to add a termite-proof additive into a sheath, wherein the termite-proof additive has the function of repelling or killing termites, but the effect of the termite-proof additive can affect the performance of the termite-proof additive until the termite-proof additive fails along with the change of time and environment, and once the termite-proof effect fails, the termite corrosion can cause the failure of the cable, thereby affecting the service life of the cable.
In addition a series of abnormal temperature changes such as cable conductor high temperature, cable surface temperature height all can influence the normal use of cable, reduce cable life, all need monitor at cable operation in-process, and three kinds of cables that now often use combine the monitoring mode with the optical cable: 1. the optical cable is placed outside the cable and fixed, and the combination of the method results in that the optical fiber is far away from the conductor and the temperature measurement error is large. 2. The optical fiber tube is placed in the middle of the conductor, and in the mode, when the cable is bent in the production and laying processes, the optical fiber is easy to break. 3. The optical cable is wrapped on the insulating fiber core, and the mode is combined, so that the insulating fiber core expands with heat and contracts with cold in the electrifying process, the diameter of the wire core is increased, and the optical fiber is easy to break.
Disclosure of Invention
The first purpose of the invention is to provide an intelligent temperature-measuring and rat-proof cable, which improves the surface hardness of the cable, enhances the physical performance of the surface of the cable and can effectively prevent damage of rats and ants to the cable by extruding a nylon sheath outside an outer sheath; meanwhile, the non-hygroscopic material filler with the optical fiber tubes filled between the insulated wire cores is used for monitoring and measuring the temperature of the cable conductor.
The second purpose of the invention is to provide a preparation method of the cable capable of intelligently measuring temperature and preventing rats and ants, the preparation method is simple to operate and has good environmental protection effect, the prepared cable has good scratch-resistant and rat and ant-resistant effects, the temperature of a cable conductor can be accurately measured, and the cable has great application value.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
the invention provides an intelligent temperature-measuring rat-proof and termite-proof cable, which comprises: the cable core and the coating sheath; the coating sheath mainly comprises an outer protective layer and a rat and ant prevention layer; and a temperature measuring component is filled between the coating sheath and the cable core, and the temperature measuring component mainly comprises a non-hygroscopic material filler and an optical fiber tube. The cable can effectively prevent damage of rats and ants to the cable, and meanwhile, the temperature of the cable can be accurately monitored and measured.
In the prior art, the conventional rat and ant prevention eating method is to add a rat and ant prevention additive into a sheath, wherein the rat and ant prevention additive has an effect of repelling or killing rats and ants, but the effect of the rat and ant prevention additive can affect the performance of the rat and ant prevention until the performance of the rat and ant prevention additive is completely ineffective along with the change of time and environment, and once the effect of the rat and ant prevention is ineffective, the rat and ant prevention can cause the failure of a cable due to the corrosion of the rats and ants, so that the service life of the cable is affected. Meanwhile, the rat and ant prevention additive is a toxic chemical preparation, so that the production cost is relatively high, and the surrounding environment is polluted.
The method for monitoring and measuring the temperature of the cable in the prior art mainly adopts a monitoring mode combining the cable and the optical cable, and is specifically divided into the following three modes:
1. the optical cable is placed outside the cable and fixed;
2. the optical fiber tube is placed in the middle of the conductor;
3. the optical cable is wrapped on the insulating fiber core.
When the temperature of the cable is measured by adopting a first mode, namely, the optical cable is fixedly arranged outside the cable, the optical fiber is far away from the conductor, the temperature measurement error is large, and the measurement accuracy cannot be ensured; when the temperature of the conductor is measured by arranging the optical fiber tube in the middle of the conductor in the second mode, the optical fiber is easy to break when the cable is easy to bend in the production and laying processes, and the temperature cannot be measured; when adopting the third mode to be about the optical cable when wrapping on insulating fiber core, because the cable can rise at circular telegram in-process temperature, the expansion with heat and contraction with cold phenomenon can take place for its inside insulating fiber core, and the sinle silk diameter increases, and then causes the easy rupture of optic fibre, can't measure the inboard temperature of cable.
In order to solve the technical problem, the invention provides an intelligent temperature-measuring rat-proof and termite-proof cable. The invention arranges a scratch-resistant rat-proof and ant-proof nylon sheath outside the outer sheath. The nylon sheath has excellent wear resistance, self-lubricating property and chemical stability, and has excellent mechanical and physical properties, high strength, large surface hardness, good creep resistance, high bending strength and high impact strength; compared with the common rat and ant prevention additive, the nylon sheath has the function of environmental protection, and does not pollute soil and environment; therefore, the intelligent temperature-measuring rat and ant prevention cable has an excellent scratch-resistant effect, a stable rat and ant prevention effect and a long duration.
Secondly, in order to more accurately monitor and measure the temperature of the cable, the optical fiber tube is placed in the middle of the non-hygroscopic material filler, and the optical fiber and the non-hygroscopic material filler are filled between the cable core and the cable coating sheath, so that the cost is reduced, and the optical fiber is protected; in a word, the intelligent temperature-measuring rat-proof and termite-proof cable provided by the invention can accurately measure the temperature of the cable, and has excellent scratch-resistant effect and rat-proof and termite-proof effect.
Preferably, in the temperature measuring assembly, the number of the optical fiber tubes is more than two, and the optical fiber tubes are wrapped in the non-hygroscopic material filler. The optical fiber tube is arranged in the non-hygroscopic material filler, the non-hygroscopic material filler positioned in front of the optical fiber tube can absorb the expansion with heat and the contraction with cold of the insulating fiber core, the damage of the insulating fiber core to the optical fiber tube in the cabling process can be avoided, and meanwhile, the phenomenon that a certain optical fiber is broken in the production or laying process to cause inaccurate or impossible temperature measurement is prevented.
Preferably, the optical fiber tube is adjacent to the cable core. The optical fiber tube is located at the position, which is on the inner side of the middle of the non-hygroscopic material, so that the distance between the optical fiber and the center of the conductor can be limited, and a temperature measurement result is prevented from having large errors.
Preferably, in the intelligent temperature-measuring and rat and ant-preventing cable, the coating sheath sequentially comprises an outer protective layer and a rat and ant-preventing layer from inside to outside, so that the rat and ant-preventing effect can be achieved.
More preferably, in the intelligent temperature-measuring rat-proof and termite-proof cable, the covering sheath comprises a first wrapping tape, the specific setting position of the first wrapping tape has no specific requirement, and the first wrapping tape can be arranged outside the outer protection layer or in the outer protection layer.
More preferably, in the intelligent temperature-measuring rat and ant-proof cable, the coating sheath comprises an armor layer, and the armor layer is generally a steel strip armor layer, a thick steel wire armor layer or a thin steel wire armor layer; the armor layer is arranged in the outer sheath and has no definite position relation with the first wrapping tape; furthermore, the armor layer is arranged between the first wrapping tape and the outer protective layer; the armor layer is arranged, so that the mechanical strength of the cable can be enhanced, the anti-corrosion capability of the cable is improved, and the service life of the cable is prolonged.
More preferably, in the intelligent temperature-measuring rat-proof and ant-proof cable, the wrapping sheath further comprises an isolation layer, and the isolation layer is extruded in the armor layer and does not have a certain position requirement with the first wrapping tape. Furthermore, the wrapping sheath is sequentially provided with a first wrapping tape, an isolating layer, an armor layer, an outer protecting layer and a rat and ant preventing layer from inside to outside. Through setting up the isolation layer, can keep apart armor and cable core, alleviate the oxidation of conductor in the cable core to improve the life of cable.
Most preferably, the wrapping sheath further comprises a second wrapping tape, and the specific arrangement position of the second wrapping tape has no specific requirement; the second is around the band for thermal-insulated around the band, can improve the heat-proof quality of cable. Furthermore, the wrapping sheath is sequentially provided with a first wrapping tape, an isolating layer, an armor layer, a second wrapping tape, an outer protecting layer and a rat and ant preventing layer from inside to outside. The cable is more reasonable in arrangement, the mechanical strength and hardness of the cable can be better improved, and the cable has excellent heat insulation and waterproof performances.
Preferably, the cable core is formed by mutually twisting a plurality of insulated wire cores; the insulated wire core includes: the conductor and the insulating sheath respectively coat outside the conductor; and a good insulation effect is ensured.
Preferably, the insulating sheath is sequentially provided with a conductor shielding layer, an insulating shielding layer and a copper strip shielding layer from inside to outside, so that the insulating effect is improved.
Preferably, the non-hygroscopic filler is non-woven fabric, a PP (polypropylene) filling rope, glass fiber, asbestos, a rubber strip or a plastic strip, and the filled non-hygroscopic filler can prevent moisture from radially entering the cable core and longitudinally flowing so as to ensure that the moisture cannot enter the cable core when the sheath is damaged and ensure the reliability of communication.
Preferably, the rat and ant prevention layer is a nylon sheath; the preparation method of the nylon sheath comprises the following steps: the halogen-free flame retardant material, the halogen-free flame retardant and the antioxidant are mixed and extruded to prepare the flame retardant. The prepared nylon sheath has excellent wear resistance and self-lubricating property, good chemical stability, excellent mechanical and physical properties and strength, and can improve the surface hardness, bending strength and impact strength of the cable.
In addition, the invention also provides a preparation method of the intelligent temperature-measuring rat-proof and termite-proof cable, which comprises the following steps:
coating the coating sheath on the outer side of the cable core;
and non-hygroscopic material fillers are filled between the coating sheath and the cable core, and an optical fiber tube is arranged between the non-hygroscopic material fillers. The preparation method is simple to operate, can be used for manufacturing the cable which has good effects of resisting scraping, preventing rats and ants and can be used for accurately measuring the temperature of the cable conductor, and has great application value.
Preferably, the coating sheath is composed of an outer protective layer and a rat/ant prevention layer. The preparation method comprises the following steps: coating an outer protective layer on a cable core, and filling a non-hygroscopic material filler containing optical fibers between the cable core and the outer protective layer; and then the rat and ant prevention layer is extruded and coated on the outer protective layer to complete the preparation. The arrangement can achieve the effect of preventing rats and ants.
More preferably, the wrapping sheath further comprises a first wrapping tape. The preparation method comprises the following steps: firstly, wrapping the first wrapping tape on a cable core, and filling non-hygroscopic material fillers containing optical fibers into the cable core and the first wrapping tape; then, the outer protective layer is coated on the first wrapping tape; and finally, extruding and wrapping the rat and ant prevention layer on the outer protection layer to finish the preparation. The first wrapping tape is a water blocking tape, so that water and moisture in the cable can be reduced, and the service life of the cable is prolonged.
More preferably, the covering sheath further comprises an armor layer. The preparation method comprises the following steps: firstly, wrapping the first wrapping tape on a cable core, and filling non-hygroscopic material fillers containing optical fibers into the cable core and the first wrapping tape; then cladding the armor layer outside the first lapping tape; then, coating the outer protective layer on the first wrapping tape; and finally, extruding and wrapping the rat and ant prevention layer on the outer protection layer to finish the preparation. The armor layer is arranged, so that the mechanical strength of the cable can be enhanced, the anti-corrosion capability of the cable is improved, and the service life of the cable is prolonged.
More preferably, the coating sheath further comprises an isolation layer. The preparation method comprises the following steps: firstly, wrapping the first wrapping tape on a cable core; then the isolating layer is extruded on the first wrapping tape; then cladding the armor layer on the isolation layer; then, the outer protective layer is coated on the armor layer; and finally, extruding and wrapping the rat and ant prevention layer on the outer protection layer to finish the preparation. Through setting up the isolation layer, can keep apart armor and cable core, alleviate the oxidation of conductor in the cable core to improve the life of cable.
Most preferably, the covering sheath further comprises a second wrapping tape. The preparation method comprises the following steps: firstly, wrapping a first wrapping tape on the outer side of a cable core, and filling non-hygroscopic material filler containing optical fibers into the cable core and the first wrapping tape;
then, extruding an isolation layer outside the first wrapping tape, extruding an armor layer outside the isolation layer, wrapping a second wrapping tape, and extruding an outer protection layer;
and finally, extruding a nylon sheath outside the outer protective layer to finish the preparation. The cable is more reasonable in arrangement, the mechanical strength and the rat and termite prevention effect of the cable can be better improved, and the cable has excellent heat insulation and waterproof performances.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic structural diagram of an intelligent temperature-measuring rat-proof and termite-proof cable in example 1 of the embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an intelligent temperature-measuring rat-proof and ant-proof cable in example 2 according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a cable thermometry arrangement in an embodiment of the present invention.
Description of the drawings:
10-a cable; 101-a conductor;
102-a conductor shield layer; 103-an insulating layer;
104-an insulating shield layer; 105-copper tape shielding layer;
106-a filling of non hygroscopic material; 107-fiber tube;
108-a first wrapping tape; 109-an isolation layer;
1010-armor layer; 1011-a second wrapping tape;
1012-outer sheath; 1013-nylon sheathing;
20-cable termination; 30-an optical fiber splice closure;
40-temperature measurement control system; 50-cable joint.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. 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. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to more clearly illustrate the technical solution of the present invention, the following description is made in the form of specific embodiments.
The invention provides an intelligent temperature-measuring rat-proof and termite-proof cable, which comprises: the cable core and the coating sheath; the coating sheath mainly comprises an outer protective layer and a rat and ant prevention layer; and a temperature measuring component is filled between the coating sheath and the cable core, and the temperature measuring component mainly comprises a non-hygroscopic material filler and an optical fiber tube. The damage of rats and ants to the cable can be effectively prevented, and meanwhile, the temperature of the cable can be accurately monitored and measured.
Preferably, the coating sheath of the intelligent temperature-measuring rat and ant prevention cable sequentially comprises an outer protective layer and a rat and ant prevention layer from inside to outside, so that the rat and ant prevention effect can be achieved.
More preferably, in the intelligent temperature-measuring rat-proof and termite-proof cable, the covering sheath comprises a first wrapping tape, the specific setting position of the first wrapping tape has no specific requirement, and the first wrapping tape can be arranged outside the outer protection layer or in the outer protection layer.
More preferably, in the intelligent temperature-measuring rat and ant-proof cable, the coating sheath comprises an armor layer, and the armor layer is generally a steel strip armor layer, a thick steel wire armor layer or a thin steel wire armor layer; the armor layer is arranged in the outer sheath and has no definite position relation with the first wrapping tape; furthermore, the armor layer is arranged between the first wrapping tape and the outer protective layer.
More preferably, in the intelligent temperature-measuring rat-proof and ant-proof cable, the wrapping sheath further comprises an isolation layer, and the isolation layer is extruded in the armor layer and does not have a certain position requirement with the first wrapping tape. Furthermore, the wrapping sheath is sequentially provided with a first wrapping tape, an isolating layer, an armor layer, an outer protecting layer and a rat and ant preventing layer from inside to outside.
Most preferably, the wrapping sheath further comprises a second wrapping tape, and the specific arrangement position of the second wrapping tape has no specific requirement; the second is around the band for thermal-insulated around the band, can improve the heat-proof quality of cable. Furthermore, the wrapping sheath is sequentially provided with a first wrapping tape, an isolating layer, an armor layer, a second wrapping tape, an outer protecting layer and a rat and ant preventing layer from inside to outside.
Preferably, the cable core is formed by mutually twisting a plurality of insulated wire cores; the insulated wire core includes: the cable comprises a conductor and insulating sheaths respectively coating the conductor.
Preferably, the insulating sheath is sequentially provided with a conductor shielding layer, an insulating shielding layer and a copper strip shielding layer from inside to outside.
Preferably, the non-hygroscopic filler is non-woven fabric, PP filling rope, glass fiber, asbestos, rubber strip or plastic strip.
Preferably, the rat and ant prevention layer is a nylon sheath; the preparation method of the nylon sheath comprises the following steps: the halogen-free flame retardant material, the halogen-free flame retardant and the antioxidant are mixed and extruded to prepare the flame retardant. The prepared nylon sheath has excellent wear resistance and self-lubricating property, good chemical stability, excellent mechanical and physical properties, high strength, large surface hardness, good creep resistance, and high bending strength and impact strength.
The scratch-resistant and termite-resistant nylon sheath is arranged outside the outer sheath, and has excellent wear resistance, self-lubrication and chemical stability, excellent mechanical and physical properties, high strength, high surface hardness, good creep resistance, high bending strength and high impact strength; compared with the common rat and ant prevention additive, the nylon sheath has the function of environmental protection, and does not pollute soil and environment; therefore, the intelligent temperature-measuring rat and ant prevention cable has an excellent scratch-resistant effect, a stable rat and ant prevention effect and a long duration.
Preferably, in the temperature measurement assembly, the number of the optical fiber tubes is more than two, and the optical fiber tubes are wrapped in the non-hygroscopic filler, so that the cost is reduced, and the temperature measurement function cannot be completed due to the fact that a certain optical fiber is broken in the production or laying process.
Preferably, the optical fiber tube is close to the cable core so as to enhance the accuracy of temperature measurement.
According to the invention, the optical fiber tube is placed in the middle of the non-hygroscopic material filler, and the optical fiber and the non-hygroscopic material are filled between the cable core and the cable coating sheath, so that the cost is reduced, and the optical fiber is protected; meanwhile, the optical fiber tube is arranged in the non-hygroscopic material filler, the non-hygroscopic material filler positioned in front of the optical fiber tube can absorb the expansion caused by heat and contraction caused by cold of the insulating fiber core and can avoid the damage of the insulating fiber core to the optical fiber tube in the cabling process, and the optical fiber tube is positioned at the position which is more inward than the middle of the non-hygroscopic material filler, so that the distance between the optical fiber and the center of the conductor can be limited, and the temperature measurement is prevented from generating larger errors; in addition, each cable is at least provided with two optical fiber tubes, so that the phenomenon that a certain optical fiber is broken in the production or laying process and the temperature measuring function cannot be completed is avoided. In conclusion, the temperature measuring device can accurately measure the temperature of the cable, and has excellent scratch resistance and rat and ant prevention effects.
In addition, the invention also provides a preparation method of the intelligent temperature-measuring rat-proof and termite-proof cable, which comprises the following steps:
coating the coating sheath on the outer side of the cable core;
and non-hygroscopic material fillers are filled between the coating sheath and the cable core, and an optical fiber tube is arranged between the non-hygroscopic material fillers. The preparation method is simple to operate, can be used for manufacturing the cable which has good effects of resisting scraping, preventing rats and ants and can be used for accurately measuring the temperature of the cable conductor, and has great application value.
In the following, some embodiments of the present invention will be described in detail with reference to the accompanying drawings, and features in the following embodiments and examples may be combined with each other without conflict.
Examples
As shown in fig. 1, embodiment 1 of the present invention provides a novel intelligent temperature measurement rat-proof and termite-proof cable, which includes a cable core and a coating sheath, wherein the cable core is formed by twisting at least one insulated wire core, the insulated wire core includes a conductor 101, and a conductor shielding layer 102, an insulating layer 103, an insulating shielding layer 104 and a copper strip shielding layer 105 which are sequentially wrapped outside the conductor 101, a non-hygroscopic material filler 106 containing an optical fiber tube 107 is filled between the insulated wire core and the coating sheath, and the coating sheath sequentially includes an outer sheath 1012 and a nylon sheath 1013 from inside to outside.
The preparation method of the embodiment 1 of the invention comprises the following steps: firstly, wrapping the outer protective layer 1012 outside the cable core, and then filling a non-hygroscopic material filler 106 containing the optical fiber tube 107 between the outer protective layer 1012 and the cable core; finally, the nylon jacket 1013 is wrapped on the outer jacket 1012 to complete the preparation.
As shown in fig. 2, the novel intelligent temperature-measuring rat-proof and ant-proof cable according to embodiment 2 of the present invention further includes a first wrapping tape 108, an isolation layer 109, an armor layer 1010 and a second wrapping tape 1011, and at this time, the first wrapping tape 108, the isolation layer 109, the armor layer 1010, the second wrapping tape 1011, an outer protective layer 1012 and a nylon sheath 1013 are sequentially coated outside the cable core from inside to outside.
The preparation method of the embodiment 2 of the invention comprises the following steps: firstly, wrapping a first wrapping tape 108 on a cable core; secondly, filling a non-hygroscopic material filler 106 containing an optical fiber tube 107 between the cable core and the first wrapping tape 108; then the isolation layer 109 is extruded on the first wrapping tape 108; then, the armor 1010 is packaged outside the isolation layer 109; then, the second wrapping tape 1011 is wrapped on the armor layer 1010; next, the outer jacket 1012 is wrapped around the second wrapping tape 1011; finally, the nylon jacket 1013 is wrapped around the outer jacket 1012 to complete the preparation.
The first wrapping tape 108 is a water blocking tape, so that water and moisture permeation in the cable can be reduced, and the service life of the cable is prolonged; the second wrapping tape 1011 is a heat insulation tape, so that the heat insulation capability of the cable can be improved, and the normal work of the cable in a high-temperature environment can be guaranteed; the isolation layer 109 can reduce the oxidation of the conductor in the cable core, thereby prolonging the service life of the cable; armor 1010, oversheath 1012 and nylon sheath 1013 play the multiple protection's of cable effect, prevent the damage of rat and ant to the cable.
In the above two embodiments, the non-hygroscopic filler 106 is a non-woven fabric, a PP filler rope, a glass fiber, an asbestos, a rubber strip or a plastic strip, which can prevent moisture from entering the cable core radially and flowing longitudinally; the number of the optical fiber tubes 107 is at least two, the optical fiber tubes are placed in the middle of the non-hygroscopic material filler 106 and are twisted into the position close to the conductor 101, so that the requirement of accurate temperature measurement is met.
The nylon jacket 1013 is prepared by mixing and extruding a halogen-free flame retardant material, a halogen-free flame retardant and an antioxidant. The prepared nylon sheath 1013 has excellent wear resistance and self-lubricating property, good chemical stability and excellent mechanical and physical properties, and compared with the common rat and ant preventing additive, the nylon sheath has more environmental protection effect and can not cause pollution to soil and environment.
The temperature measuring process of the intelligent temperature measuring rat and ant preventing cable in the two embodiments of the invention is briefly described below.
Fig. 3 is a schematic diagram of cable temperature measurement according to an embodiment of the present invention. This temperature measurement system includes: cable 10, fiber tube 107, cable termination 20, fiber splice closure 30, temperature measurement control system 40, and cable joint 50. The specific temperature measuring method comprises the following steps: the temperature of the cable is measured through the optical fiber tube 107, and the measured temperature is transmitted to the temperature measurement control system 40 through the optical fiber splicing box 30, so that the monitoring and measurement of the temperature of the cable are realized.
In general, the intelligent temperature-measuring rat-proof and ant-proof cable disclosed by the two embodiments of the invention has the advantages of high surface hardness, high bending strength and high impact strength, so that the intelligent temperature-measuring rat-proof and ant-proof cable has an excellent scratch-resistant effect, is stable in rat-proof and ant-proof effect and long in duration, and is more environment-friendly than the existing rat-proof and ant-proof cable; and the temperature of the measuring cable can be accurately monitored.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides an intelligence temperature measurement protection against rodents ant cable which characterized in that includes: the cable core and the coating sheath; the coating sheath mainly comprises an outer protective layer and a rat and ant prevention layer; and a temperature measuring component is filled between the coating sheath and the cable core, and the temperature measuring component mainly comprises a non-hygroscopic material filler and an optical fiber tube.
2. The intelligent temperature-measuring rat-proof and ant-proof cable according to claim 1, wherein in the temperature-measuring component, the number of the optical fiber tubes is more than two, and the optical fiber tubes are wrapped in the non-hygroscopic material filler.
3. The intelligent temperature-measuring rat-proof and ant-proof cable of claim 2, wherein the optical fiber tube is adjacent to the cable core to enhance the accuracy of temperature measurement.
4. The cable of claim 1, wherein the covering sheath comprises an outer sheath and a rat and ant prevention layer, and the outer sheath and the rat and ant prevention layer are arranged from inside to outside in sequence.
5. The cable of claim 1, wherein the wrapping sheath comprises a first wrapping tape, an isolation layer, an armor layer, a second wrapping tape, an outer protection layer and a rat and ant prevention layer, and the first wrapping tape, the isolation layer, the armor layer, the second wrapping tape, the outer protection layer and the rat and ant prevention layer are sequentially arranged from inside to outside.
6. The intelligent temperature-measuring rat-proof and ant-proof cable according to claim 1, wherein the cable core is formed by mutually twisting a plurality of insulated wire cores; the insulated wire core includes: the cable comprises a conductor and insulating sheaths respectively coating the conductor.
7. The cable of claim 5, wherein the insulating sheath comprises a conductor shielding layer, an insulating shielding layer and a copper strip shielding layer from inside to outside in sequence.
8. The intelligent temperature-measuring rat-proof and ant-proof cable according to claim 1, wherein the non-hygroscopic filler is non-woven fabric, PP filling rope, glass fiber, asbestos, rubber strip or plastic strip.
9. The intelligent temperature-measuring rat-proof and ant-proof cable according to claim 1, wherein the rat-proof and ant-proof layer is a nylon sheath; the rat and ant prevention layer is extruded outside the outer sheath;
the preparation method of the nylon sheath comprises the following steps: the halogen-free flame retardant material, the halogen-free flame retardant and the antioxidant are mixed and extruded to prepare the flame retardant.
10. A method for preparing the intelligent temperature-measuring rat-proof and ant-proof cable according to any one of claims 1 to 9, which comprises the following steps:
coating the coating sheath on the outer side of the cable core;
and non-hygroscopic material fillers are filled between the coating sheath and the cable core, and an optical fiber tube is arranged between the non-hygroscopic material fillers.
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| CN202010547518.2A CN111584135A (en) | 2020-06-16 | 2020-06-16 | Intelligent temperature-measuring rat-proof and termite-proof cable and preparation method thereof |
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| CN202010547518.2A CN111584135A (en) | 2020-06-16 | 2020-06-16 | Intelligent temperature-measuring rat-proof and termite-proof cable and preparation method thereof |
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Cited By (1)
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| CN112708216A (en) * | 2020-11-27 | 2021-04-27 | 杭州富通电线电缆有限公司 | Cable sheath material with long-acting rat and ant prevention function |
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