CN218918470U - High-flexibility oil-resistant fire-resistant cable - Google Patents
High-flexibility oil-resistant fire-resistant cable Download PDFInfo
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- CN218918470U CN218918470U CN202222918245.5U CN202222918245U CN218918470U CN 218918470 U CN218918470 U CN 218918470U CN 202222918245 U CN202222918245 U CN 202222918245U CN 218918470 U CN218918470 U CN 218918470U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model provides a high-flexibility oil-resistant fire-resistant cable, which comprises: the cable comprises a cable core and a cable wrapping layer, wherein the cable wrapping layer wraps the cable core; the cable core comprises an insulated conductor and a mineral filled cord, the insulated conductor comprising: the cable comprises six types of conductors and a cable core wrapping layer wrapping the six types of conductors, wherein the cable core wrapping layer comprises a fire-resistant layer and an insulating layer which are sequentially wrapped outside the conductors. The bending times and the service life of the cable can be greatly improved; the electric energy and signal transmission time of the cable can be effectively prolonged when a fire disaster occurs; the cable can stably work for a long time in greasy dirt and grease environments, and the reliability and the safety of a using system are greatly improved. Truly realizes the characteristics of safety and environmental protection.
Description
Technical Field
The utility model is applied to the technical field of cables, and particularly relates to a high-flexibility oil-resistant fire-resistant cable which is mainly used for power distribution in a cable for connecting a power supply and equipment and a distribution line with rated voltage of 1kV or below.
Background
The GB 51348-2019 'civil construction Electrical design Standard', which is started to be implemented on 8/1/2020, clearly specifies the combustion performance of wires and cables and the choice of the use place. Wherein the 8.9.1 fire-resistant cable should have flame retardant properties not lower than level B1; 13.8.4 the alarm bus of the fire automatic alarm system adopted in the dredging channel of the personnel-intensive places should select the electric wire and cable with the combustion performance B1 level; 13.9.1 the fire performance grade of the exposed wires and cables in public buildings with building heights exceeding 100m and between refuge layers should be no lower than B1; the B1-level electric wires and cables should also be selected for financial buildings, provincial power dispatching buildings, provincial (municipal) level broadcast television, telecommunication buildings and personnel-intensive public places in high-rise buildings.
In the face of complex and severe working environments, the B1-level cable is often accompanied by a series of unstable factors, such as long-term corrosion of greasy dirt or lubricating grease to the cable, oil invasion to the cable can lead to cable surface cracking, influence transmission, fire resistance and combustion performance of the cable, lead to the shortening of the service life of the cable, and simultaneously can cause cable transmission interruption, cause short circuit of electrical appliances and lead to damage of electrical equipment. When some cables are installed, maintained or used, the cables are dragged, so that the flexibility requirement on the cables is improved, the bending performance of the cables is enhanced, and the service life of the cables is prolonged. When a fire disaster occurs, the cable cannot work normally after meeting high temperature, and the fire resistant layer is added to effectively prolong the working time of the cable and increase the escape opportunity of personnel. Namely, the high flexibility, oil resistance and fire resistance of the existing B1-class cable are still to be improved. This places higher demands on the B1 class cable.
Therefore, how to improve the flexibility, oil resistance and fire resistance of the B1 cable is a technical problem to be solved.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides the high-flexibility oil-resistant fire-resistant cable, and the high flexibility, fire resistance and oil resistance of the cable are synchronously improved on the premise of ensuring that the cable meets the combustion performance of the B1-level cable.
The technical scheme of the utility model is as follows: a highly flexible oil and fire resistant cable, the cable comprising: the cable comprises a cable core and a cable wrapping layer, wherein the cable core is wrapped by the cable wrapping layer;
the cable core includes insulated conductor and mineral filled rope, and insulated conductor includes: the cable comprises six types of conductors and a cable core wrapping layer wrapping the conductors, wherein the cable core wrapping layer comprises a fire-resistant layer and an insulating layer which are sequentially wrapped outside the six types of conductors;
the cable parcel layer is equipped with from inlayer to skin in proper order: a tape flame-retardant layer and a flame-retardant oil-resistant B1 outer protective layer.
Preferably, the cable core comprises a plurality of insulated conductors, the insulated conductors are mutually stranded, and round and solid mineral filling ropes are filled in stranded gaps.
Preferably, the high flexibility oil and fire resistant cable, wherein the six types of conductors are non-metallized or metallized annealed copper wire.
Preferably, the high-flexibility oil-resistant fire-resistant cable, wherein the fire-resistant layer is of a two-layer calcined mica tape wrapping structure.
Preferably, the high-flexibility oil-resistant and fire-resistant cable is characterized in that the wrapping direction of the two layers of calcined mica tapes of the two-layer calcined mica tape wrapping structure is opposite to the twisting direction of the insulated conductor.
Preferably, the high-flexibility oil-resistant and fire-resistant cable is characterized in that the insulating layer is made of crosslinked polyethylene.
Preferably, the high-flexibility oil-resistant fire-resistant cable is characterized in that the insulating layers are multiple groups, and different colors are adopted for split-phase identification.
Preferably, the high-flexibility oil-resistant and fire-resistant cable is characterized in that the insulating layers are in a plurality of groups, and different heights Wen Sedai are adopted for split-phase identification.
Preferably, the high-flexibility oil-resistant fire-resistant cable is characterized in that the tape flame-retardant layer is of a two-layer halogen-free high-flame-retardant tape overlapping wrapping structure.
Preferably, the high-flexibility oil-resistant and fire-resistant cable, wherein the flame-retardant and oil-resistant B1 outer sheath is of an extrusion structure made of halogen-free polyolefin materials.
The high-flexibility oil-resistant fire-resistant cable is used for replacing a common B1-level cable, has high flexibility, oil resistance and fire resistance, can greatly improve the bending times and service life of the cable, and can effectively prolong the electric energy and signal transmission time of the cable when a fire disaster occurs; the cable can stably work for a long time in greasy dirt and grease environments, and the reliability and the safety of a using system are greatly improved. Truly realizes the characteristics of safety and environmental protection.
The utility model has the following technical effects: on the premise of ensuring the combustion performance of the B1-level cable, the high flexibility, fire resistance and oil resistance of the cable are synchronously improved. Has the characteristics of long service life, safety, environmental protection and the like.
Drawings
This patent is further described below with reference to the drawings and embodiments.
FIG. 1 is a schematic cross-sectional view of the structure of the highly flexible oil and fire resistant cable of the present utility model.
Detailed Description
Exemplary embodiments of the present disclosure are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present disclosure to facilitate understanding, and should be considered as merely exemplary. Accordingly, one of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
In the description of the present disclosure, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present disclosure. 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 disclosure, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "configured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art in the specific context. Embodiments thereof are described below in terms of the overall structure of the present disclosure.
As shown in fig. 1, in a highly flexible oil and fire resistant cable embodiment of the present utility model, the cable comprises: the cable comprises a cable core and a cable wrapping layer, wherein the cable core is wrapped by the cable wrapping layer;
the cable core comprises an insulated conductor and a mineral filled rope 4, the insulated conductor comprising: the cable comprises six types of conductors 1 and a cable core wrapping layer wrapping the six types of conductors 1, wherein the cable core wrapping layer comprises a fire-resistant layer 2 and an insulating layer 3 which are sequentially wrapped outside the six types of conductors;
the cable parcel layer is equipped with from inlayer to skin in proper order: a tape flame-retardant layer 5 and a flame-retardant oil-resistant B1 outer protective layer 6.
The six-type conductor 1 adopts a sixth copper conductor conforming to GB/T3956-2008, namely the six-type conductor 1 adopts an annealing copper wire which is not plated with metal or plated with metal, on one hand, the monofilament of the sixth copper conductor is thinner than the first conductor, the second conductor and the fifth conductor, the flexibility is good, the bending is easier, and the bending service life is longer. On the other hand, the copper wire has certain flexibility, and the strength of the copper wire conductor is also increased. The small cross section is generally formed by one-time strand twisting, and the large cross section is generally produced by a production process of firstly carrying out strand bundle twisting and then carrying out strand re-twisting. Thereby increasing the bending property of the B1-grade cable, being not easy to be damaged and prolonging the service life.
As a preferred embodiment, the refractory layer 2 is provided with a two-layer calcined mica tape wrapping structure, wherein the two-layer calcined mica tape wrapping structure is formed by wrapping two layers of calcined mica tapes on six types of conductors 1, the wrapping direction is opposite to the conductor twisting direction, and the covering rate is not less than 25%.
The calcined mica tape wrapping structure can replace a gold mica tape or a synthetic mica tape, the softness of the calcined mica tape wrapping structure is convenient for wrapping, the calcined mica tape does not contain fluorine or halogen, thick smoke and carbon deposit are not generated during combustion, the calcined mica tape wrapping structure is environment-friendly, and meanwhile, a compact conductor protective shell (insulator) can be formed at a high temperature. The flexibility of the fire-resistant layer 2 is guaranteed, the temperature resistance level of the fire-resistant layer is further improved, the electric energy and signal transmission time of the B1-level cable are effectively prolonged, and the fire resistance is enhanced.
As a preferred embodiment, the insulating layer 3 is formed by extruding an insulating material through an extruder, and a steam crosslinking process is required to be completed after the extrusion is completed so as to ensure that the thermal extension is qualified;
the insulating material is made of crosslinked polyethylene, and the insulating thickness meets the GB/T12706.1-2020 standard requirements;
wherein, the insulating layer 3 with the size of 6 square and below adopts color phase separation to identify, and the insulating layer 3 with the size of 10 square and above adopts high Wen Sedai to identify.
As a preferred embodiment, the cable core comprises a plurality of insulated conductors twisted with each other, the twisted gaps being filled with round bodies by mineral filled ropes 4.
Wherein the cable cores are more rounded by filling the gaps between the cable cores with mineral filling ropes 4, wherein the cabling pitch is not more than 50 times the outer diameter of the cabling.
The mineral filling rope 4 is an environment-friendly flame-retardant material, and the material is not only harmless to the health of staff during production, but also can be naturally decomposed during discarding, so that a large amount of pollutants are not generated.
As a preferred embodiment, the number of insulated conductors may be 4,4 insulated conductors stranded with each other, the stranded gap being filled with round solid by mineral filled rope 4.
As a preferred embodiment, the tape flame-retardant layer 5 is formed by overlapping and wrapping two layers of halogen-free high-flame-retardant tapes on a cable core, wherein the tape oxygen index is more than 50, the wrapping lap rate is not less than 30%, the tape after wrapping is ensured to be flat, no wrinkles exist, and the direction is opposite to the cable forming direction.
As a preferred embodiment, the flame-retardant oil-resistant B1 outer protective layer 6 is formed by extruding flame-retardant oil-resistant B1 grade environment-friendly low-smoke halogen-free polyolefin materials through an extruding machine, and the thickness of the protective sleeve meets the GB/T12706.1-2020 standard requirements. Therefore, the oil resistance of the cable is improved on the premise of meeting the B1-level combustion requirement, and the reliability and the safety of the cable are greatly improved.
The utility model adopts the sixth conductor in GB/T3956-2008, has softer characteristic compared with the second and fifth conductors in the common B1-level cable, and can greatly improve the bending times and service life of the cable; particularly, a double-layer calcined mica tape wrapping structure is adopted, and the material structure can enable the cable to continue to stably run for a certain time under the condition of fire, so that not only is the escape opportunity of personnel increased, but also the electric energy transmission time of the cable is prolonged, and the fire resistance of the cable is effectively enhanced; particularly, an oil-resistant outer protective layer structure is used, and the structure enables the cable to stably work for a long time in greasy dirt and grease environments, so that the reliability and the safety of a using system are greatly improved. Finally, the cable core is filled with the environment-friendly nonflammable material, namely the mineral filling rope, so that the health of staff can not be endangered during production, a large amount of pollutants can not be produced under abnormal conditions, and the characteristics of safety and environment friendliness are truly realized.
The above detailed description should not be taken as limiting the scope of the present disclosure. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (10)
1. The utility model provides a high flexible oil-resistant fire-resistant cable which characterized in that:
comprising the following steps: the cable comprises a cable core and a cable wrapping layer, wherein the cable wrapping layer wraps the cable core;
the cable core comprises an insulated conductor and a mineral filled cord (4), the insulated conductor comprising: the cable comprises six types of conductors (1) and a cable core wrapping layer wrapping the six types of conductors (1), wherein the cable core wrapping layer comprises a fire-resistant layer (2) and an insulating layer (3) which are sequentially wrapped outside the six types of conductors; the cable parcel layer is equipped with from inlayer to skin in proper order: a tape flame-retardant layer (5) and a flame-retardant oil-resistant B1 outer protective layer (6).
2. The highly flexible oil and fire resistant cable according to claim 1, characterized in that: the cable core comprises a plurality of insulated conductors, the insulated conductors are mutually stranded, and round and solid mineral filling ropes (4) are filled in stranded gaps.
3. The highly flexible oil and fire resistant cable according to claim 1, characterized in that: the six types of conductors (1) are non-metal-plated or metal-plated annealed copper wires.
4. The highly flexible oil and fire resistant cable according to claim 1, characterized in that: the fire-resistant layer (2) is arranged into a two-layer calcined mica tape wrapping structure.
5. The highly flexible oil and fire resistant cable according to claim 4, wherein: the wrapping direction of the two layers of calcined mica tapes of the two layers of calcined mica tape wrapping structure is opposite to the twisting direction of the insulated conductor.
6. The highly flexible oil and fire resistant cable according to claim 1, characterized in that: the insulating layer (3) is made of crosslinked polyethylene.
7. The highly flexible oil and fire resistant cable according to claim 1, characterized in that: the insulating layers (3) are multiple groups, and different colors are adopted for split-phase identification.
8. The highly flexible oil and fire resistant cable according to claim 1, characterized in that: the insulating layers (3) are in a plurality of groups, and different heights Wen Sedai are adopted for split-phase identification.
9. The highly flexible oil and fire resistant cable according to claim 1, characterized in that: the tape flame-retardant layer (5) is of a two-layer halogen-free high flame-retardant tape overlapping wrapping structure.
10. The highly flexible oil and fire resistant cable according to claim 1, characterized in that: the flame-retardant oil-resistant B1 outer protective layer (6) is of a halogen-free polyolefin material extrusion structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222918245.5U CN218918470U (en) | 2022-11-01 | 2022-11-01 | High-flexibility oil-resistant fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222918245.5U CN218918470U (en) | 2022-11-01 | 2022-11-01 | High-flexibility oil-resistant fire-resistant cable |
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| Publication Number | Publication Date |
|---|---|
| CN218918470U true CN218918470U (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222918245.5U Active CN218918470U (en) | 2022-11-01 | 2022-11-01 | High-flexibility oil-resistant fire-resistant cable |
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| Country | Link |
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| CN (1) | CN218918470U (en) |
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- 2022-11-01 CN CN202222918245.5U patent/CN218918470U/en active Active
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