CN212365549U - Rectangular audio and video communication cable with anti-electromagnetic interference aramid fiber woven reinforcing layer - Google Patents
Rectangular audio and video communication cable with anti-electromagnetic interference aramid fiber woven reinforcing layer Download PDFInfo
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- CN212365549U CN212365549U CN202021170557.7U CN202021170557U CN212365549U CN 212365549 U CN212365549 U CN 212365549U CN 202021170557 U CN202021170557 U CN 202021170557U CN 212365549 U CN212365549 U CN 212365549U
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Abstract
The utility model discloses an anti-electromagnetic interference aramid fiber weaves strengthening layer rectangle audio frequency and video communication cable, including heart yearn and oversheath, the heart yearn includes conductor, inner insulating layer, graphite shielding layer and outer insulating layer, the outer insulating layer is used for wrapping up graphite shielding layer, still be provided with the strengthening layer that is used for wrapping up the heart yearn between heart yearn and the oversheath, oversheath parcel strengthening layer, graphite shielding layer is high-conductive graphite coating shielding layer, the semi-conductive layer is the anti-interference layer of electric field homogenization semi-conductive, inner insulating layer and outer insulating layer are resistant oily high temperature high density polyethylene insulating layer and resistant oily low smoke and zero halogen fire-retardant irradiation crosslinked polyethylene insulating layer respectively, the oversheath is resistant oily fire-retardant low smoke and zero halogen irradiation crosslinked. The utility model discloses, be provided with aramid fiber between heart yearn and the oversheath and weave the strengthening layer, the conductor adopts special soft tinned copper wire of high-purity electrical industry or naked copper wire simultaneously, and the bearing force ability is stronger.
Description
Technical Field
The utility model relates to the technical field of cables, specifically be anti-electromagnetic interference aramid fiber weaves strengthening layer rectangle audio frequency video communication cable.
Background
The existing common equipment is used for monitoring the shortcoming of the communication cable:
the common monitoring cable for equipment adopts metal wire braided shielding or metal tape lapping shielding, so that the production cost is high, and the production process is complicated.
The electromagnetic shielding layer made of metal material is easy to corrode and fail in high-temperature, high-humidity and high-chemical-corrosion environments, such as reduced mechanical strength, easy fracture, increased resistance and the like.
The shielding layer braided by the metal wires has good shielding effect on strong electric field interference but has the problem of electromagnetic leakage on high-frequency and large-frequency-band electromagnetic field interference.
The metal wire braided shielding layer or the metal tape lapping shielding structure is not compact, and can easily become a channel for water to invade the cable in the field, so that the cable is corroded to influence high-frequency signal transmission or shorten the service life.
Sunlight resistance, acid and alkali resistance, oil stain resistance, poor flame retardant effect and poor tension bearing capability.
The conductor is generally twisted by metal wires, so small protrusions are formed on the surface of the conductor, the electric field at the positions of the protrusions is far higher than that at other positions, and audio and video signals are attenuated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an anti-electromagnetic interference aramid fiber weaves strengthening layer rectangle audio frequency and video communication cable to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the rectangular audio and video communication cable with the anti-electromagnetic interference aramid fiber braided reinforcing layer comprises a core wire and an outer sheath, wherein the core wire comprises a conductor, an inner insulating layer and a shielding layer, the conductor is wrapped in the inner insulating layer, the inner insulating layer is wrapped in the shielding layer, the core wire is wrapped in the outer sheath, the core wire further comprises an electric field homogenization anti-interference semi-conducting layer and an outer insulating layer, the electric field homogenization anti-interference semi-conducting layer is positioned between the inner insulating layer and the conductor, the outer insulating layer is used for wrapping the shielding layer, a reinforcing layer used for wrapping the core wire is further arranged between the core wire and the outer sheath, the outer sheath wraps the reinforcing layer, the shielding layer is a high-conductivity graphite coating shielding layer, the inner insulating layer and the outer insulating layer are respectively an oil-resistant high-temperature-resistant high-density polyethylene insulating layer and, the conductor is made of a high-purity soft tinned copper wire or a bare copper wire special for the electrical industry, and the outer sheath is an oil-resistant flame-retardant low-smoke halogen-free irradiation cross-linked polyolefin outer sheath.
Preferably, the shielding layer is uniformly and densely coated between the inner insulating layer and the outer insulating layer.
Preferably, the reinforcing layer is a high-strength flame-retardant aramid fiber woven reinforcing layer.
Preferably, the outer sheath is a rectangular flat structure.
Preferably, the communication cable is adapted to transmit the communication signal by reflection between the electric field homogenizing interference resistant semi-conductive layer and the shielding layer.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses, still be provided with the strengthening layer between heart yearn and the oversheath, the conductor adopts special soft tinned copper wire or naked copper wire of high-purity electrical industry simultaneously, bears the pulling force ability stronger, and the conductor adopts special soft tinned copper wire or naked copper wire of high-purity electrical industry to have good electric conductive property;
2. the utility model discloses, the shielding layer is high conductive graphite coating shielding layer, low in production cost, simple process is difficult for being corroded inefficacy in the environment of high temperature, high humidity, high chemical corrosion, can shield high frequency big frequency channel electromagnetic field, and can not provide space invasion cable for the water in the field;
3. the utility model discloses, inner insulating layer and outer insulating layer are resistant oily high temperature resistant high density polyethylene insulating layer and resistant oily high temperature resistant low smoke and zero halogen flame retardant irradiation crosslinked polyethylene insulating layer respectively, and the oversheath is resistant oily fire-retardant low smoke and zero halogen irradiation crosslinked polyolefin oversheath, and resistant sunshine, acid and alkali-resistance, resistant greasy dirt, flame retardant efficiency are good.
4. The utility model discloses, the anti-interference semi-conducting layer of electric field homogenization can play the effect of balanced electric field for soft transposition conductor surface forms rounded electromagnetic field, reduces the audio and video signal decay.
5. The utility model discloses, adopt fire-retardant aramid fiber weaving layer as the strengthening layer, play the effect of bearing the tension in the cable, improve product life and reliability.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a conductor; 2. an electric field homogenized anti-interference semi-conducting layer; 3. an inner insulating layer; 4. a shielding layer; 5. an outer insulating layer; 6. a reinforcing layer; 7. an outer sheath.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the rectangular audio and video communication cable with the anti-electromagnetic interference aramid fiber braided reinforcing layer comprises a core wire and an outer sheath 7, wherein the core wire comprises a conductor 1, an inner insulating layer 3 and a shielding layer 4, the conductor 1 is wrapped in the inner insulating layer 3, the inner insulating layer 3 is wrapped in the shielding layer 4, the core wire is wrapped in the outer sheath 7, the core wire further comprises an electric field homogenization anti-interference semi-conducting layer 2 and an outer insulating layer 5, the electric field homogenization anti-interference semi-conducting layer 2 is positioned between the inner insulating layer 3 and the conductor 1, the outer insulating layer 5 is used for wrapping the shielding layer 4, a reinforcing layer 6 used for wrapping the core wire is also arranged between the core wire and the outer sheath 7, the outer sheath 7 is wrapped with a reinforcing layer 6, the shielding layer 4 is a high-conductivity graphite coating shielding layer, the inner insulating layer 3 and the outer insulating layer 5 are respectively an oil-resistant, the conductor 1 is made of a high-purity soft tinned copper wire or a bare copper wire special for the electrical industry, and the outer sheath 7 is an oil-resistant flame-retardant low-smoke halogen-free irradiation cross-linked polyolefin outer sheath.
Specifically, the reinforcing layer 6 is a high-strength flame-retardant aramid fiber woven reinforcing layer, and not only has strong tension bearing capacity, but also has good flame retardant property.
Specifically, the shielding layer 4 is uniformly and densely coated between the inner insulating layer 3 and the outer insulating layer 5.
Specifically, the outer sheath 7 is of a rectangular flat structure, and is convenient to move and use.
Specifically, when the communication cable transmits the communication signal, the communication signal is reflected and transmitted between the electric field homogenizing anti-interference semi-conductive layer 2 and the shielding layer 4.
The conductor 1 adopts a high-purity soft copper wire (tinned copper wire or bare copper wire) special for the electrical industry, has good conductivity and tensile strength, is suitable for being installed by users in a small space, has good flexibility, and prolongs the service life of a product;
the electromagnetic field is extremely complicated because of conductor surface non-roundness when the conductor of many copper wires transposition can be when transmitting the signal, and in order to reduce the electromagnetic interference between the signal, this product adopts semiconductive material to coat and guarantees electromagnetic signal stable transmission on the conductor surface.
The inner insulating layer 3 and the outer insulating layer 5 of the audio and video cable core are respectively an oil-resistant high-temperature-resistant high-density polyethylene insulating layer and an oil-resistant high-temperature-resistant low-smoke halogen-free flame-retardant irradiation crosslinked polyethylene insulating layer, so that the audio and video cable core is superior in safety, environmental protection, low smoke, zero halogen, good insulating property, small electromagnetic loss, high temperature-resistant grade and the like, and the realization of various transmission functions of safety prevention and control, site video, equipment monitoring signals, instruction signals and the like of a smart grid and a user is realized while the manufacturing cost is. The high-temperature resistance and electromagnetic compatibility of the cable are improved due to the good insulating property. Can ensure that the product normally works within the range of-70 ℃ to 150 ℃ when being fixedly installed. The product makes up the defect of single signal transmission of the current monitoring system, and realizes the synchronous transmission of audio and video signals through technical synthesis.
The shielding layer 4 is a coating layer with an electromagnetic shielding function, which is prepared by coating novel high-conductivity graphite powder. The shielding layer can effectively shield high-frequency weak current signals and accords with the idea that green environmental protection is advocated in modern life and electromagnetic radiation is not generated.
The outer insulating layer 5 is an electric insulating layer made of oil-resistant high-temperature-resistant low-smoke halogen-free flame-retardant irradiation crosslinking polyethylene insulation. The outer insulation layer 5 has excellent tensile strength to provide electrical insulation and protection for the operation of the insulated wire core. More importantly, the outer insulating layer 5 stably and reliably fixes the high-conductivity graphite coating shielding layer in the wire core.
The high-strength flame-retardant aramid fiber woven reinforcing layer 6 can enhance the structural stability, the tensile force bearing capacity and the fire resistance of the cable. When the installation can be fixed high strength fire-retardant aramid fiber weaving strengthening layer 6 on adapting unit, reduce the bearing pulling force and the vibrations of work sinle silk, guarantee work sinle silk steady operation, extension product life can not break because of the atress when equipment shakes, shakes acutely.
The outer sheath 7 of the product adopts a common oil-resistant flame-retardant low-smoke halogen-free irradiation cross-linked polyolefin outer sheath. The material has better flame retardant property. When a fire occurs, the fire does not spread due to the burning of the cable.
The outer sheath 7 of the product is an irradiation cross-linked polyolefin sheath, has good ultraviolet irradiation resistance, and can be used in the field with strong sunshine for a long time.
The technical parameters are as follows:
rated operating voltage U0/U: 60V, 150V, 250V, 300/300V, 300/500V, 450/750V;
temperature range: the mobile working condition is-15 ℃ to 150 ℃;
the fixed working condition is-30 ℃ to 150 ℃;
bending radius: minimum cable up-down thickness x 12 under mobile working condition
Fixing the minimum upper and lower thickness of the cable under the working condition multiplied by 6;
the torsion range max +/-360 degrees/m;
effective bending times: 50 ten thousand times;
the signal control system is suitable for signal control systems of modern farms, modern homes, high-end equipment and office places, and is good in flexibility, integrated in function, convenient to install and maintain and low in application cost.
The product structure is very compact, and the cable can still normally work after being soaked in water for a long time.
In the application occasions where fire is easy to ignite, the product is produced by adopting flame retardant materials, so that the fire spreading is avoided.
The product is laid simple to operate, reduces user purchasing cost through function intensification design, has really responded national supply side structure reform, has satisfied the demand of modern intelligent production life.
The environment-friendly and nontoxic high-conductivity graphite is used as a shielding material, so that the environment is protected, and information such as audio and video signals, temperature, humidity, current intensity, equipment rotating speed and the like generated in the sensor can be timely and accurately transmitted to a management center.
The installation is convenient, and the mechanical properties such as wear resistance, impact resistance, tear resistance and the like are good. The bending resistance is good, and the normal current transmission can be carried out after 50 ten thousand moving bending.
The product has good properties of sunlight resistance, acid and alkali resistance, oil stain resistance, flame retardance and the like, and ensures that the product can normally work in special environment.
Conductor 1 was used in compliance with IEC 60228: 2004 conductor of insulated cable standard electrician uses the copper stranded conductor, guarantee the good conductive ability of the product, electromagnetic signal transmission performance and convenient installation operation;
the electromagnetic field is extremely complicated because of conductor surface non-roundness when the conductor of many copper wires transposition can be when transmitting the signal, and in order to reduce the electromagnetic interference between the signal, this product adopts semiconductive material to coat and guarantees electromagnetic signal stable transmission on the conductor surface.
The audio and video cable core is insulated by adopting an oil-resistant high-temperature-resistant high-density polyolefin insulating material with excellent performances such as safety, environmental protection, low smoke, zero halogen, good insulating property, small electromagnetic loss, high temperature resistance level and the like, and the realization of various transmission functions such as safety prevention and control of a smart grid and users, on-site video, equipment monitoring signals, instruction signals and the like is realized while the manufacturing cost is controlled. The high-temperature resistance and electromagnetic compatibility of the cable are improved due to the good insulating property. The product can normally work within the range of-70 ℃ to 150 ℃ when being fixedly installed. The product makes up the defect of single signal transmission of the current monitoring system, and realizes the synchronous transmission of audio and video signals through technical synthesis.
The conductive graphite is an environment-friendly conductive material, has good conductivity, friction resistance and acid-base corrosion resistance, is widely used in occasions such as motor carbon brushes, dry battery electrodes and the like, and is an important conductive material in the electrical industry. The traditional metal shielding material is poor in chemical stability and easy to corrode, and in addition, gaps exist in metal braided shielding and metal tape lapping shielding, so that water invasion is possible.
The wire core outer layer insulation outside the high-conductivity graphite coating shielding layer adopts an oil-resistant high-temperature-resistant low-smoke halogen-free flame-retardant irradiation crosslinking polyethylene insulation layer. The outer layer insulation, in addition to serving as electrical insulation, also serves to solidify the highly conductive graphite coating shield layer. The oil-resistant characteristic of the cable enables the cable to be arranged in mechanical equipment, a machine room, a pumping station and the like with serious oil stains.
The high-strength flame-retardant aramid fiber woven reinforcing layer can enhance the structural stability, the tensile force bearing capacity and the fire resistance of the cable. Can fix the aramid fiber weaving layer on adapting unit when the installation, reduce the bearing pulling force and the vibrations of work sinle silk, guarantee work sinle silk steady operation, extension product life does not can not break because of the atress when equipping and violently rocking, vibrations.
The sheath layer adopts an oil-resistant flame-retardant low-smoke halogen-free irradiation cross-linked polyolefin outer sheath. The material is flame-retardant, oil-resistant and ultraviolet radiation-resistant. The product has good ultraviolet irradiation resistance, and can be used in field with strong sunlight for a long time. When the outer sheath is produced, an extrusion type production process is adopted, so that the product forms a compact structure to avoid water or oil contamination invasion. The product adopts a flame-retardant sheath material, and can effectively avoid fire from being delayed along the cable.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. Anti-electromagnetic interference aramid fiber weaves strengthening layer rectangle audio frequency and video communication cable, this communication cable includes heart yearn and oversheath, the heart yearn includes conductor, internal insulation layer and shielding layer, conductor parcel internal insulation layer, internal insulation layer parcel is in the shielding layer, the heart yearn parcel is in the oversheath, its characterized in that: the heart yearn still includes the anti-interference semi-conducting layer of electric field homogenization, outer insulating layer, the anti-interference semi-conducting layer of electric field homogenization is located between inner insulating layer and the conductor, outer insulating layer is used for wrapping up the shielding layer, still be provided with the strengthening layer that is used for wrapping up the heart yearn between heart yearn and the oversheath, oversheath parcel strengthening layer, the shielding layer is high-conductivity graphite coating shielding layer, inner insulating layer and outer insulating layer are resistant oily high temperature resistant high density polyethylene insulating layer and resistant oily high temperature resistant low smoke and zero halogen fire-retardant irradiation crosslinking polyethylene insulating layer respectively, the conductor adopts special soft tinned copper wire or naked copper wire of high-purity electric industry, the oversheath is resistant oily fire-.
2. The rectangular audio-video communication cable with the anti-electromagnetic interference aramid fiber woven reinforcing layer according to claim 1, characterized in that: the shielding layer is uniformly and densely coated between the inner insulating layer and the outer insulating layer.
3. The rectangular audio-video communication cable with the anti-electromagnetic interference aramid fiber woven reinforcing layer according to claim 1, characterized in that: the reinforcing layer is a high-strength flame-retardant aramid fiber woven reinforcing layer.
4. The rectangular audio-video communication cable with the anti-electromagnetic interference aramid fiber woven reinforcing layer according to claim 1, characterized in that: the outer sheath is of a rectangular flat structure.
5. The rectangular audio-video communication cable with the anti-electromagnetic interference aramid fiber woven reinforcing layer according to claim 1, characterized in that: when the communication cable transmits communication signals, the communication signals are transmitted by reflection between the electric field homogenization anti-interference semi-conductive layer and the shielding layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021170557.7U CN212365549U (en) | 2020-06-22 | 2020-06-22 | Rectangular audio and video communication cable with anti-electromagnetic interference aramid fiber woven reinforcing layer |
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| CN202021170557.7U CN212365549U (en) | 2020-06-22 | 2020-06-22 | Rectangular audio and video communication cable with anti-electromagnetic interference aramid fiber woven reinforcing layer |
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| CN212365549U true CN212365549U (en) | 2021-01-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114822940A (en) * | 2022-06-24 | 2022-07-29 | 浙江正导技术股份有限公司 | High-tension retractable communication cable in complex electromagnetic environment and manufacturing method thereof |
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2020
- 2020-06-22 CN CN202021170557.7U patent/CN212365549U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114822940A (en) * | 2022-06-24 | 2022-07-29 | 浙江正导技术股份有限公司 | High-tension retractable communication cable in complex electromagnetic environment and manufacturing method thereof |
| CN114822940B (en) * | 2022-06-24 | 2022-09-20 | 浙江正导技术股份有限公司 | High-tension retractable communication cable in complex electromagnetic environment and manufacturing method thereof |
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