CN210743619U - Fireproof environment-friendly cable for monitoring insulated wire core - Google Patents
Fireproof environment-friendly cable for monitoring insulated wire core Download PDFInfo
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- CN210743619U CN210743619U CN201920756468.1U CN201920756468U CN210743619U CN 210743619 U CN210743619 U CN 210743619U CN 201920756468 U CN201920756468 U CN 201920756468U CN 210743619 U CN210743619 U CN 210743619U
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Abstract
The patent of the utility model relates to a be used for insulating sinle silk to keep watch on type fire prevention environmental protection cable, the cable includes respectively from inlayer to skin in proper order: the temperature measuring optical cable, the insulating cable core, the cable core flame-retardant belting layer and the flame-retardant environment-friendly outer protective layer are arranged on the outer side of the cable core; the insulating cable core comprises a stranded conductor and a composite insulating layer coated outside the stranded conductor; insulating fillers are filled among the temperature measuring optical cable, the insulating cable core and the cable core flame-retardant belting layer. The utility model really realizes the improvement of the flame-retardant and fire-resistant performance of the cable, reduces the reactive loss of the cable and increases the current-carrying capacity of the cable; the special monitoring structure can monitor the running condition of the cable under the high-load condition on line in real time, and avoids great property loss.
Description
Technical Field
The patent of the utility model relates to a be used for insulating sinle silk to keep watch on type fire prevention environmental protection cable, in the transmission and distribution lines of mainly used rated voltage 0.6/1kV and below, it uses to carry the electric energy. The voltage regulator can also be used as a control signal in a circuit for controlling the rated voltage of 450/750V or below. Belongs to the high and new technical field of cables.
Background
High-rise buildings in the modern society become important places for daily work and life of many citizens, but fire extinguishing of the high-rise buildings becomes an international fire-fighting problem. The traditional cables (including flame-retardant, low-smoke low-halogen, low-smoke halogen-free and corresponding fire-resistant cables) can not completely meet the fire-proof requirements when the cables are on fire, burned or damaged due to long-term overload insulation. The smoke generated when the polyvinyl chloride insulated cable is burnt contains a large amount of CO and CO2And chlorides, and other cable fumes may also contain bromides, fluorides and hydrogen sulfide, which are very harmful to humans. Therefore, a large number of cables with higher fire-proof performance are required to be equipped in the market so as to meet the power transmission requirement of the area with high fire-fighting requirement.
The more fireproof cables used in the current market are mineral insulated cables. The copper conductor core, the copper outer sheath and the insulating layer of the traditional mineral insulated cable are compact and integrated, and the mineral insulated cable is complex in production process, expensive in price, high in hardness and not easy to bend during construction, so that the length of ordering must be quite accurate in terms of cost reduction and construction process. Meanwhile, the sectional area of the cable is larger than 25mm2Only can be produced into a single core, and the length of the cable is limited by the maximum delivery length, so that the mineral insulated cable is not easy to form mass production and has higher installation difficulty.
Disclosure of Invention
The utility model discloses a mineral insulation flexible fireproof cable, the performance that can overcome traditional cable on the market is poor, can overcome the production difficulty of current mineral insulation cable again. Realizing large-length and large-size production. The product is softer, and installation and laying are convenient, and the intermediate head is less, and product performance can pass through BS6387 standard inspection. Can completely meet the market demand.
The utility model discloses an aim at realize like this:
the utility model provides a be used for insulating core to keep watch on type fire prevention environmental protection cable, the cable includes respectively from inlayer to skin in proper order: the temperature measuring optical cable, the insulating cable core, the cable core flame-retardant belting layer and the flame-retardant environment-friendly outer protective layer are arranged on the outer side of the cable core;
the insulating cable core comprises a stranded conductor and a composite insulating layer coated outside the stranded conductor;
insulating fillers are filled among the temperature measuring optical cable, the insulating cable core and the cable core flame-retardant belting layer.
The stranded conductor adopts a type 2 or type 5 conductor.
The composite insulating layer is formed by combining a plurality of layers of mineral insulating wrapping layers and a polymer insulating layer; the wrapping layer number of the multilayer mineral insulation wrapping layer is determined by the actual thickness of the wrapping tape and the rated voltage grade; the mineral insulation lapping layer adopts a plurality of layers of mineral insulation composite tapes; the overlapping rate of each layer of the mineral insulation composite belt is not less than 30%.
The temperature measuring optical cable mainly comprises a temperature sensing optical fiber, a protective layer, an anti-electromagnetic interference reinforced layer and an outer protective layer. The optical fiber type is multimode, and the mechanical property and the optical property of the optical fiber type meet the requirements of IEC60793 optical fiber standard. The real-time operation condition of the cable core is reflected by monitoring the internal temperature of the cable during operation on line.
The temperature measuring optical cable is twisted with the insulated cable core, the twisting pitch is not more than 25 times of the outer diameter of the cable, and the insulating filler is made of non-hygroscopic environment-friendly materials.
The cable core flame-retardant wrapping tape layer is formed by overlapping and wrapping a flame-retardant wrapping tape, the high-flame-retardant wrapping tape adopts two layers of overlapping wrapping, and the wrapping and covering rate is not less than 30 percent
The flame-retardant environment-friendly outer protective layer is generally made of halogen-free low-smoke flame-retardant environment-friendly materials, and can also be made of environment-friendly materials with other characteristics such as rat and ant resistance, ultraviolet resistance, oil resistance and the like according to the use environment and the requirements of customers. Preferably, a halogen-free low smoke flame retardant polyolefin is used.
The utility model relates to a be used for insulating sinle silk to keep watch on type fire prevention environmental protection cable for replace ordinary fire-retardant fire resisting cable, the conductor of cable adopts 2 nd, 5 th class conductor in GB/T3956-; aiming at the possible fire and other conditions, the cable not only has a fire-resistant and flame-retardant insulating composite structure, but also has a high-flame-retardant wrapping tape filling layer, and can be used for ensuring that the cable continues to stably run for a certain time to the maximum extent under the condition of fire, thereby giving people the escape opportunity. The insulating composite structure and the outer protective layer of the cable are made of environment-friendly materials, so that a large amount of pollutants can not be generated under abnormal conditions, and the characteristics of safety and environment friendliness are really realized. Meanwhile, the adopted special monitoring structure can monitor the running condition of the cable under the high-load condition on line in real time, and avoids great property loss.
The cable has extremely high flame-retardant, fire-resistant and environment-friendly performances, and is suitable for fire-fighting equipment, fire-proof elevators, lighting systems and the like in various important buildings or intensive personnel places; the method is suitable for places with high temperature, such as steel plants, smelting plants, glass plants and the like; is suitable for important occasions with flammability and explosiveness, such as: petrochemical, coal mine, etc.; is suitable for places with higher environmental protection requirements, such as: hospitals, food plants, etc.
Compared with a common flame-retardant fire-resistant cable, the cable can bear the working high temperature of up to 125 ℃ on the basis of keeping the original performance. The reactive loss of the cable is reduced, the energy waste can be greatly reduced after long-term use, the cost is saved, and the cable has great economic benefit. The special monitoring function of the cable can monitor the problems in the operation process of the cable, and the design of the environment-friendly flame-retardant structure of the cable can further improve the safety guarantee of a using system.
Drawings
The patent is further described with reference to the drawings and the embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in figure 1, the flexible stranded conductor 1 adopts the conductor structures of class 2 and class 5 in GB/T3956-2008, so that the cable is wider in application range and can meet the requirements of different occasions. The cable category 5 conductor is thinner, more flexible, longer in flex life and easier to lay than the category 2 monofilament. For the 5 th class conductor, the small section is generally formed by one-time bunching, and the large section is generally produced by a production process of firstly performing strand bunching and then performing strand compound twisting. After the compound twisting is finished, a layer of polyester tape can be added and wrapped to prevent the wire core from loosening.
The composite insulating layer 2 can be divided into a fire-resistant mica tape, a ceramic silicon rubber tape and the like according to different mineral insulating materials; according to different temperature resistance grades of the high polymer insulating material, the high polymer insulating material can be divided into cross-linked polyethylene insulation, halogen-free low-smoke flame-retardant polyolefin insulation and the like. Corresponding mineral insulating materials and polymer plastics are adopted according to different use environment temperatures.
The temperature measuring optical cable 3 for on-line monitoring mainly comprises a temperature sensing optical fiber, a protective layer, an anti-electromagnetic interference reinforced layer and an outer protective layer. The optical fiber type is multimode, and the mechanical property and the optical property of the optical fiber type meet the requirements of IEC60793 optical fiber standard. The real-time operation condition of the cable core is reflected by monitoring the internal temperature of the cable during operation on line.
The insulated cable core + temperature measuring cable multi-cable core structure 4 shown in fig. 1: the temperature measuring cable is formed by arranging and twisting a plurality of insulating cable cores and a proper temperature measuring cable, wherein the temperature measuring cable is contacted with the cable cores as far as possible, and the twisting pitch is not more than 25 times of the outer diameter of the cable. When the twisting is not round enough, non-hygroscopic environment-friendly materials are needed to be used for filling. The composite insulating layer 2, the temperature measuring optical cable 3 for online monitoring and the cable core flame-retardant belting layer 5 are filled with round and compact materials and are usually formed by flame-retardant filling ropes or yarns; according to different use characteristics and conditions of the cable, water-blocking filling ropes or yarns can be adopted, and when the water-blocking filling ropes or yarns are adopted, the longitudinal water-proof and moisture-proof effects can be achieved in the use process of the cable.
The cable core flame-retardant belting layer 5 is formed by lapping high flame-retardant belts with oxygen index larger than 50 in a double-layer overlapping mode, and the lapping rate is not less than 30%.
The flame-retardant environment-friendly outer protective layer 6 is made of extruded halogen-free low-smoke flame-retardant environment-friendly materials, and can also be made of environment-friendly materials with other characteristics such as rat and ant resistance, ultraviolet resistance, oil resistance and the like according to the use environment and the requirements of customers. The reliability and the safety of the cable are greatly improved.
The design and application of the flexible stranded conductor 1, the composite insulation structure 2, the temperature measuring optical cable 3 for on-line monitoring, the insulation cable core + temperature measuring optical cable multi-cable core structure 4 and the flame-retardant environment-friendly outer protective layer 6 are the key points of the patent. The application of the flexible stranded conductor 1 can improve the bending times and the service life of the cable; the composite insulation structure 2 can reduce reactive power consumption in the using process, improve the current-carrying capacity of the cable and improve the flame-retardant and fire-resistant performance of the cable; the temperature measuring optical cable 3 for on-line monitoring can monitor the operation condition inside the cable in real time and on line, and avoid larger loss caused by overhigh load; the insulated cable core and the temperature measuring optical cable multi-cable core structure 4 meet different use environments and can protect the insulated cable core from being influenced by external force; the flame-retardant environment-friendly outer sheath 6 protects the cable from external influences.
The overall performance of the cable is improved by 10-20% compared with that of a common flame-retardant fire-resistant cable, the defects of the existing mineral insulated cable can be overcome, the large-length and large-size production is realized, the product is softer, the installation and the laying are convenient, the number of intermediate joints is small, and the like. More importantly, the following can be verified by the BS6387 standard: meanwhile, the adopted special monitoring structure can monitor the running condition of the cable under the high-load condition on line in real time, and avoids great property loss. Has higher practical economic value.
Claims (7)
1. The utility model provides a be used for insulating sinle silk to keep watch on type fire prevention environmental protection cable which characterized in that: the cable comprises the following components from the inner layer to the outer layer in sequence respectively: the temperature measuring optical cable, the insulating cable core, the cable core flame-retardant belting layer and the flame-retardant environment-friendly outer protective layer are arranged on the outer side of the cable core;
the insulating cable core comprises a stranded conductor and a composite insulating layer coated outside the stranded conductor;
insulating fillers are filled among the temperature measuring optical cable, the insulating cable core and the cable core flame-retardant belting layer.
2. The fire-proof environment-friendly cable for monitoring the insulated wire core according to claim 1, wherein: the stranded conductor adopts a type 2 or type 5 conductor.
3. The fire-proof environment-friendly cable for monitoring the insulated wire core according to claim 1, wherein: the composite insulating layer is formed by combining a plurality of layers of mineral insulating wrapping layers and a polymer insulating layer; the mineral insulation lapping layer adopts a plurality of layers of mineral insulation composite tapes; the overlapping rate of each layer of the mineral insulation composite belt is not less than 30%.
4. The fire-proof environment-friendly cable for monitoring the insulated wire core according to claim 1, wherein: the temperature measuring optical cable is of a multi-mode type, and the mechanical property and the optical property of the temperature measuring optical cable meet the requirements of IEC60793 optical fiber standards.
5. The fire-proof environment-friendly cable for monitoring the insulated wire core according to claim 1, wherein: the temperature measuring optical cable is twisted with the insulated cable core, the twisting pitch is not more than 25 times of the outer diameter of the cable, and the insulating filler is made of non-hygroscopic environment-friendly materials.
6. The fire-proof environment-friendly cable for monitoring the insulated wire core according to claim 1, wherein: the cable core flame-retardant belting layer is formed by overlapping and lapping flame-retardant belting, and the lapping and covering rate is not less than 30%.
7. The fire-proof environment-friendly cable for monitoring the insulated wire core according to claim 1, wherein: the flame-retardant environment-friendly outer protective layer is made of halogen-free low-smoke flame-retardant polyolefin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920756468.1U CN210743619U (en) | 2019-05-20 | 2019-05-20 | Fireproof environment-friendly cable for monitoring insulated wire core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920756468.1U CN210743619U (en) | 2019-05-20 | 2019-05-20 | Fireproof environment-friendly cable for monitoring insulated wire core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210743619U true CN210743619U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920756468.1U Active CN210743619U (en) | 2019-05-20 | 2019-05-20 | Fireproof environment-friendly cable for monitoring insulated wire core |
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| CN (1) | CN210743619U (en) |
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- 2019-05-20 CN CN201920756468.1U patent/CN210743619U/en active Active
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