CN212411657U - 450-grade and 750-grade flame-retardant isolated B1-grade control cable - Google Patents
450-grade and 750-grade flame-retardant isolated B1-grade control cable Download PDFInfo
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- CN212411657U CN212411657U CN202021439087.XU CN202021439087U CN212411657U CN 212411657 U CN212411657 U CN 212411657U CN 202021439087 U CN202021439087 U CN 202021439087U CN 212411657 U CN212411657 U CN 212411657U
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Abstract
The utility model discloses a 450 supple of heat fire-retardant B1 level control cable of 750V fire-resistant isolated form, a plurality of insulated wire strand into the pencil each other, the flame retardant coating, separate oxygen layer and oversheath and set up the outside at the pencil from inside to outside in proper order, every insulated wire contains the conductor, trinity synthetic mica mineral insulating layer and insulating sheath, trinity synthetic mica mineral insulating layer sets up in the conductor outside, insulating sheath sets up in the trinity synthetic mica mineral insulating layer outside, trinity synthetic mica mineral insulating layer contains first film, first glass cloth, powder mica paper, second glass cloth and second film, first glass cloth, powder mica paper, second glass cloth and second film set gradually and through the gluing agent bonding according to the order. The utility model discloses when having guaranteed cable fire behavior, also guaranteed the mechanical properties of cable, the fire prevention time is longer, ensures that the bend radius of cable itself can not improve when meeting with the conflagration, and the cable operation is more stable.
Description
Technical Field
The utility model relates to a control cable, especially a 450-.
Background
The fire-resistant isolated flame-retardant B1-grade control cable is mainly used for cables for connecting fire-fighting power supply and fire-fighting facilities and power transmission and distribution lines with rated voltage of 1KV and below for transmitting electric energy; the wide application of the fire-resistant isolated flame-retardant B1-grade control cable is a necessary trend for the development of cables for the building market in China in the future, is an important component for social development and economic construction, and has wide development and application space for fire safety prevention. The economy of China is developed at a high speed, and the technical measures are adopted to practically solve the problem of the operation safety of the cable in the case of fire. The fireproof isolated flame-retardant B1-grade control cable adopts a mineral fireproof layer, a high-flame-retardant oxygen-insulating layer and a low-smoke halogen-free outer protective layer as technical development directions, is beneficial to promoting the high-end development of special cables in China, and practically protects the life and property safety of people. The fire-resistant isolated flame-retardant B1-grade control cable has a very remarkable isolation flame-retardant effect, can still fully ensure the power supply of a fire-fighting system under the condition of fire, does not generate a large amount of smoke and toxic gas during combustion, and greatly prolongs the service life of the fire-resistant isolated flame-retardant control cable by using inorganic minerals as insulation.
Most of the existing fire-resistant isolated flame-retardant B1-grade control cables are wrapped by mica tapes and provided with flame-retardant outer sheath structures, so that the fire resistance is poor or not too high, the cables cannot be continuously electrified or generate a large amount of toxic gas and smoke during combustion under the condition of external high temperature, and hidden dangers are brought to the safety of lives and properties of people during fire. Because the special environment that fire-resistant isolated flame-retardant B1 level controls the use of cables, especially in the metallurgy, mining and paper making industries, the fire-resistant and flame-retardant effects of cables are more important, and at present, various manufacturers continuously explore and research more effective solutions or more superior product structures and still do not achieve the expected effects. For the fire-resistant isolated fuel control cable with more than 19 cores, the number of the cores is large, the outer diameter is large, the fire-resistant B1 type combustion test is difficult to pass, if too much fire retardant is added into the fire-resistant material, the mechanical performance index of the material is inevitably reduced greatly, and the mechanical performance after aging is difficult to be qualified, so that the cable can crack in the bending stress process, the sheath can age obviously in the operation process, and the service life of the cable is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a 450-grade and 750-grade flame-retardant B1-grade control cable with excellent flame-retardant performance and good mechanical performance is provided.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
A450-750V fire-resistant isolated flame-retardant B1-grade control cable is characterized in that: contain a plurality of insulated conductors, the flame retardant coating, separate oxygen layer and oversheath, a plurality of insulated conductors strand into the pencil each other, the flame retardant coating, separate oxygen layer and oversheath and set up the outside at the pencil from inside to outside in proper order, every insulated conductor contains the conductor, trinity synthetic mica mineral insulating layer and insulating sheath, trinity synthetic mica mineral insulating layer sets up in the conductor outside, insulating sheath sets up in the trinity synthetic mica mineral insulating layer outside, trinity synthetic mica mineral insulating layer contains first film, first glass cloth, powder mica paper, second glass cloth and second film, first glass cloth, powder mica paper, second glass cloth and second film set gradually according to the order and pass through the gluing agent bonding.
Further, the insulating sheath is made of a cross-linked polyethylene material.
Further, a gap between the wire bundle and the fireproof layer is filled with a flame-retardant high-temperature-resistant filling rope.
Furthermore, the adhesive is amino epoxy resin adhesive.
Further, the fireproof layer is made of aluminum hydroxide powder.
Further, the oxygen barrier layer adopts 40 oxygen index low-smoke halogen-free flame retardant polyolefin.
Further, the outer sheath is made of 36 oxygen index low-smoke halogen-free flame retardant polyolefin.
Further, the glass fiber layers are respectively arranged on the inner side of the fireproof layer, between the fireproof layer and the oxygen isolation layer and between the oxygen isolation layer and the outer sheath.
Furthermore, the glass fiber layer is formed by wrapping a glass fiber tape.
Further, the first film and the second film are both polyester films.
Compared with the prior art, the utility model, have following advantage and effect: the utility model discloses a 450 supple with one's more fire-retardant B1 level control cables of 750V fire-resistant isolated form adopts trinity synthetic mica mineral insulating layer, and through the combination of glass cloth and powder mica paper, glass cloth itself has good mechanical properties and has certain flame retardant efficiency, combines powder mica paper to guarantee flame retardant efficiency, and adopts the mode of combination can reduce the thickness of mineral matter fire retardant, guarantees that final mechanical properties is still good.
Drawings
FIG. 1 is a schematic view of a 450-750V fire-resistant isolated flame-retardant B1-grade control cable according to the present invention.
Fig. 2 is a schematic view of the three-in-one synthetic mica mineral insulating layer of the present invention.
Detailed Description
To elaborate on the technical solution adopted by the present invention for achieving the predetermined technical purpose, the technical solution in the embodiment of the present invention will be clearly and completely described below by combining with the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a partial embodiment of the present invention, not a whole embodiment, and technical means or technical features in the embodiment of the present invention can be replaced without paying creative efforts, and the present invention will be described in detail below by combining with the embodiments with reference to the drawings.
As shown in FIG. 1, the utility model discloses a 450-. The fireproof layer 5 is made of aluminum hydroxide powder, an adhesive is added into the aluminum hydroxide powder and is uniformly mixed, then the aluminum hydroxide powder is extruded and wrapped on the outer side of the conductor bundle through an extruding machine, and the aluminum hydroxide powder can also be directly extruded in a physical extrusion mode and synchronously fixed on the outer side in a wrapping mode through a glass fiber belt. The oxygen isolation layer 7 adopts 40-oxygen-index low-smoke halogen-free flame-retardant polyolefin, and can isolate oxygen to provide a combustion improver during combustion, so that fire spreading is effectively prevented. The outer sheath 9 is made of low-smoke halogen-free flame-retardant polyolefin with an oxygen index of 36, so that the cable is environment-friendly, flame-retardant and protected. Wherein the product model of the 36-oxygen-index low-smoke halogen-free flame-retardant polyolefin is a cable HW461-9 in the Asian east China sea, and the product model of the 40-oxygen-index low-smoke halogen-free flame-retardant polyolefin is HW-495 in the Asian east China sea.
Each insulated wire comprises a conductor 1, a three-in-one synthetic mica mineral insulating layer 2 and an insulating sheath 3, the three-in-one synthetic mica mineral insulating layer 2 is arranged outside the conductor 1, the insulating sheath 3 is arranged outside the three-in-one synthetic mica mineral insulating layer 2, a mineral insulating layer and a fireproof layer are adopted, a dual fireproof effect can be achieved, the fireproof performance of the cable body is improved, the flame retardant performance of the cable can be effectively improved by an oxygen isolating layer and a low-smoke halogen-free flame-retardant polyolefin outer protection double sheath, the mineral insulating layer and the fireproof layer are crusted at high temperature, the grade of the fireproof cable specified by BS 6387:2013 can be achieved, the fireproof temperature is 950 ℃, and 180 minutes of power. The insulating sheath 3 is made of cross-linked polyethylene material, and plays a role in moisture insulation and increases insulating electrical property.
As shown in fig. 2, the three-in-one synthetic mica mineral insulating layer 2 comprises a first film 10, a first glass cloth 11, mica paper 12, a second glass cloth 13 and a second film 14, wherein the first film 10, the first glass cloth 11, the mica paper 12, the second glass cloth 13 and the second film 14 are sequentially arranged and bonded by an adhesive, and the first film 10 and the second film 14 are both polyester films. The adhesive is a belt-shaped insulating material which is formed by bonding, baking and cutting amino epoxy resin adhesive. The mica powder paper is a mineral substance with good fireproof performance, is a paper-shaped material and has certain basic mechanical performance, the glass cloth is very excellent in mechanical performance, high in strength and good in bending performance, the mica powder paper and the glass cloth are laminated and molded with the film, a three-in-one synthetic mica mineral substance insulating layer is formed, fireproof and mechanical performance can be considered, and the excellent bending radius is convenient to construct and can be laid in various complex environments. And in the burning process, after the mica paper is crusted, even under the bending deformation state of the cable, the crusting can not crack due to the constraint of the cellophane, and the fireproof performance in the burning process is ensured.
And a gap between the wire bundle and the fireproof layer 5 is filled with the flame-retardant high-temperature-resistant filling rope, and the flame-retardant high-temperature-resistant filling rope is filled during cabling to ensure that the cable is round and round, does not absorb moisture and ensures the bending radius of the cable. The flame-retardant high-temperature-resistant filling rope adopts a filling rope of Yangzhou Tengfei ZR-GPT model. The product is the best substitute for replacing glass fiber and asbestos at present, the melting point is 260 ℃, the oxygen index is more than 35%, the glass fiber has great harm to the health of workers and the environment, the water content is high, the mineral insulating layer can absorb moisture when the product is used in a cable, the insulation resistance of the cable is reduced, and the phenomenon cannot be caused by using a flame-retardant high-temperature-resistant filling rope.
The glass fiber layers are respectively arranged on the inner side of the fireproof layer 5, between the fireproof layer 5 and the oxygen isolation layer 7 and between the oxygen isolation layer 7 and the outer sheath 9. The fine layer of glass comprises the fine area of glass around the package, and the fine layer of first glass 4 is around the package in the outside of pencil, and the fine layer of second 6 is around the package in the flame retardant coating 5 outside, and the fine layer of third 8 is around the package in the oxygen layer 7 outside that separates. The function of separating the wire bundle, the fireproof layer, the oxygen isolation layer and the outer protective layer is achieved, construction and laying are facilitated, and meanwhile the flame retardant effect is achieved.
The 450-grade and 750-V fireproof isolated B1-grade flame-retardant control cable adopts the mineral insulating layer and the crosslinked polyethylene composite insulation, so that the insulation resistance of the cable can be effectively increased, and the electrical property is improved; meanwhile, the mineral insulating layer and the fireproof layer are of a double fireproof structure, so that the cable in a fire disaster can run and protect the driver. The fireproof technology is added on the basis of the common fireproof control cable, the structure is more reasonable, the fireproof time is longer, the mineral substance insulating layer and fireproof layer fireproof structure is used, the bending radius of the cable can not be improved when the cable encounters a fire disaster, therefore, the cable is laid and operated in multiple complex environments, the effective operation time of the cable is longer when the fire disaster occurs, the destructive power influenced by the fire disaster is smaller, and the cable is more stable in operation. With the increasing requirements of flame retardant grade and objective factors during fire, the former A, B, C flame retardant grade is not enough to meet the flame retardant requirements of special occasions, the flame retardant grade B1 is higher, and the requirements of the cable on the special occasions are greatly improved by index items such as flame spread, heat release, total heat release amount, burning rate index, smoke density, toxicity index and the like. The three-in-one synthetic mica tape has unique elongation, is not easy to break and delaminate, has high temperature resistance grade, and mica powder can form a thin crust on the surface of mica paper; the aluminium hydroxide flame retardant coating meets high temperature and lasts the burning formation pottery and becomes the crust layer, and the highest temperature resistant can reach more than 2600 degrees, separates the two protective layer structures of oxygen layer and low smoke and zero halogen flame retardant polyolefin, effectually prevents that oxygen from carrying out the sustained combustion to the cable as the combustion improver, plays fine flame retardant efficiency to implement outside mechanical properties protection to the cable body.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment without departing from the technical scope of the present invention, but all the modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principle of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. A450-750V fire-resistant isolated flame-retardant B1-grade control cable is characterized in that: contain a plurality of insulated conductors, the flame retardant coating, separate oxygen layer and oversheath, a plurality of insulated conductors strand into the pencil each other, the flame retardant coating, separate oxygen layer and oversheath and set up the outside at the pencil from inside to outside in proper order, every insulated conductor contains the conductor, trinity synthetic mica mineral insulating layer and insulating sheath, trinity synthetic mica mineral insulating layer sets up in the conductor outside, insulating sheath sets up in the trinity synthetic mica mineral insulating layer outside, trinity synthetic mica mineral insulating layer contains first film, first glass cloth, powder mica paper, second glass cloth and second film, first glass cloth, powder mica paper, second glass cloth and second film set gradually according to the order and pass through the gluing agent bonding.
2. The 450-750V fire-resistant isolated flame-retardant B1-grade control cable as claimed in claim 1, wherein: the insulating sheath is made of cross-linked polyethylene.
3. The 450-750V fire-resistant isolated flame-retardant B1-grade control cable as claimed in claim 1, wherein: and a gap between the wire bundle and the fireproof layer is filled with a flame-retardant high-temperature-resistant filling rope.
4. The 450-750V fire-resistant isolated flame-retardant B1-grade control cable as claimed in claim 1, wherein: the adhesive is amino epoxy resin adhesive.
5. The 450-750V fire-resistant isolated flame-retardant B1-grade control cable as claimed in claim 1, wherein: the fireproof layer is made of aluminum hydroxide powder.
6. The 450-750V fire-resistant isolated flame-retardant B1-grade control cable as claimed in claim 1, wherein: the oxygen isolation layer adopts 40 oxygen index low-smoke halogen-free flame retardant polyolefin.
7. The 450-750V fire-resistant isolated flame-retardant B1-grade control cable as claimed in claim 1, wherein: the outer sheath is made of low-smoke halogen-free flame-retardant polyolefin with an oxygen index of 36.
8. The 450-750V fire-resistant isolated flame-retardant B1-grade control cable as claimed in claim 1, wherein: the glass fiber layers are respectively arranged on the inner side of the fireproof layer, between the fireproof layer and the oxygen isolation layer and between the oxygen isolation layer and the outer sheath.
9. The 450-750V fire-resistant isolated flame-retardant B1-grade control cable as recited in claim 8, wherein: the glass fiber layer is formed by wrapping a glass fiber tape.
10. The 450-750V fire-resistant isolated flame-retardant B1-grade control cable as claimed in claim 1, wherein: the first film and the second film are both polyester films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021439087.XU CN212411657U (en) | 2020-07-21 | 2020-07-21 | 450-grade and 750-grade flame-retardant isolated B1-grade control cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021439087.XU CN212411657U (en) | 2020-07-21 | 2020-07-21 | 450-grade and 750-grade flame-retardant isolated B1-grade control cable |
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| Publication Number | Publication Date |
|---|---|
| CN212411657U true CN212411657U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021439087.XU Active CN212411657U (en) | 2020-07-21 | 2020-07-21 | 450-grade and 750-grade flame-retardant isolated B1-grade control cable |
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| Country | Link |
|---|---|
| CN (1) | CN212411657U (en) |
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- 2020-07-21 CN CN202021439087.XU patent/CN212411657U/en active Active
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