CN218333198U - Composite fire-resistant medium-voltage cable - Google Patents
Composite fire-resistant medium-voltage cable Download PDFInfo
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- CN218333198U CN218333198U CN202221953072.4U CN202221953072U CN218333198U CN 218333198 U CN218333198 U CN 218333198U CN 202221953072 U CN202221953072 U CN 202221953072U CN 218333198 U CN218333198 U CN 218333198U
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Abstract
The utility model discloses a compound fire-resistant medium voltage cable relates to medium voltage cable field, including the cable conductor, the surface of cable conductor is provided with the internal shield layer, the surface on internal shield layer is provided with the insulating layer, the surface of insulating layer is provided with the stopping, the surface of stopping is provided with the external shield layer, the surface winding of external shield layer has the band, the surface of band is provided with the armor. The comprehensive performances of mechanical property, environmental stress cracking resistance, chemical corrosion resistance, creep resistance, electrical property and the like of the medium-voltage cable are obviously improved through the arrangement of the outer sheath and the high molecular compound layer, the temperature resistance grade is obviously improved, and the heat resistance temperature of the medium-voltage cable can be improved from 70 ℃ to more than 100 ℃, so that the application field of the medium-voltage cable is greatly widened, the high temperature resistance and the corrosion resistance of the medium-voltage cable are improved, and the service life of the medium-voltage cable is prolonged.
Description
Technical Field
The utility model relates to a medium voltage cable field, in particular to compound fire-resistant medium voltage cable.
Background
With the economic development in recent years, the importance of medium voltage cables is gradually highlighted, and the demand of various industries on the medium voltage cables is increased, the medium voltage cables have special requirements on the size and the type of the medium voltage cables due to the characteristic requirements, and the structure of the medium voltage cables is more complicated compared with that of low voltage cables.
The inventor finds the following problems in the prior art in the process of realizing the scheme, and the conventional composite fire-resistant medium-voltage cable is poor in impact resistance and corrosion resistance, can cause damage to the medium-voltage cable after long-term use, can influence the later-stage use of the medium-voltage cable, and shortens the service life of the medium-voltage cable.
Therefore, there is a need for a composite fire-resistant medium voltage cable that solves the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compound fire-resistant medium voltage cable to the shock resistance that proposes in solving above-mentioned background art forms poorly, and corrosion resisting property is poor, and long-term use can cause the medium voltage cable to damage, can influence the use in medium voltage cable later stage, has shortened medium voltage cable life's problem.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a compound fire-resistant medium voltage cable, includes cable conductor, cable conductor's surface is provided with the internal shield layer, the surface of internal shield layer is provided with the insulating layer, the surface of insulating layer is provided with the stopping, the surface of stopping is provided with the external shield layer, the surface winding of external shield layer has the band, the surface of band is provided with the armor, the surface of armor is provided with the oversheath, the oversheath includes the macromolecular compound layer, the surface of macromolecular compound layer is provided with synthetic resin layer, synthetic resin layer's surface is provided with the cross-linked polyethylene layer, the armor includes the stretch-proofing layer, the surface of stretch-proofing layer is provided with weaves the steel wire guipure, the surface of weaving the steel wire guipure is provided with the flame retardant coating.
Preferably, the filler is filled by winding a flame-retardant fiber rope.
Preferably, an outer surface of the polymer compound layer is adhered to an inner surface of the synthetic resin layer.
Preferably, the outer surface of the synthetic resin layer is adhered to the inner surface of the crosslinked polyethylene layer.
Preferably, the outer surface of the tensile layer is adhered to the inner surface of the woven steel wire mesh belt, and the outer surface of the woven steel wire mesh belt is adhered to the inner surface of the fire-resistant layer.
Preferably, the thickness of the polymer compound layer is smaller than the thickness of the crosslinked polyethylene layer.
The utility model discloses a technological effect and advantage:
1. the comprehensive performances of the medium-voltage cable such as mechanical property, environmental stress cracking resistance, chemical corrosion resistance, creep resistance, electrical property and the like are obviously improved through the arrangement of the outer sheath and the high molecular compound layer, the temperature resistance grade is obviously improved, and the heat resistance temperature of the medium-voltage cable can be increased from 70 ℃ to more than 100 ℃, so that the application field of the medium-voltage cable is greatly widened, the high temperature resistance and corrosion resistance of the medium-voltage cable are improved, and the service life of the medium-voltage cable is prolonged;
2. through the setting of crosslinked polyethylene layer and synthetic resin layer, have stronger acid and alkali-resistance and oil resistance, its combustion products mainly are water and carbon dioxide, and is less to the harm of environment, satisfies modern fire safety's requirement, and wearability and impact resistance all have the improvement to remedy traditional medium voltage cable easily receive environmental stress and cracked shortcoming, increased medium voltage cable's life.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the armor layer structure of the present invention.
Fig. 3 is a schematic view of the structure of the outer sheath of the present invention.
In the figure: 1. a cable conductor; 2. an inner shield layer; 3. an insulating layer; 4. a filler; 5. an outer shield layer; 6. wrapping the belt; 7. an armor layer; 701. a stretch resistant layer; 702. weaving a steel wire mesh belt; 703. a refractory layer; 8. an outer sheath; 801. a polymer compound layer; 802. a synthetic resin layer; 803. a crosslinked polyethylene layer.
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.
The utility model provides a composite fire-resistant medium voltage cable as shown in figures 1-3, which comprises a cable conductor 1, the outer surface of the cable conductor 1 is provided with an inner shielding layer 2, the inner shielding layer 2 and the outer shielding layer 5 mainly play a role of resisting external electromagnetic interference, the interference of an electromagnetic field generated by the cable conductor per se to the surrounding environment and the function of passing fault current are prevented in the process of using the medium voltage cable, the shielding function of eliminating the surface potential of the power cable is realized, the cable conductor has the functions of binding the power line and eliminating the induced current, such as the total shielding of the medium voltage cable, the shielding effect of the medium voltage cable is improved, the outer surface of the inner shielding layer 2 is provided with an insulating layer 3, the outer surface of the insulating layer 3 is provided with a filling material 4, the outer surface of the filling material 4 is provided with an outer shielding layer 5, the outer surface of the outer shielding layer 5 is wound with a wrapping tape 6, through the setting of the wrapping tape 6 and an armor layer 7, the use hardness, the rigidity, the wear resistance and the impact resistance of the medium voltage cable are all improved, in addition, the cable also has stronger acid and alkali resistance and oil resistance, improves the use strength of the medium-voltage cable, the armor layer 7 is arranged on the outer surface of the wrapping tape 6, the outer sheath 8 is arranged on the outer surface of the armor layer 7, the comprehensive performances of the medium-voltage cable, such as mechanical property, environmental stress cracking resistance, chemical corrosion resistance, creep resistance, electrical property and the like, are obviously improved through the arrangement of the outer sheath 8 and the high polymer compound layer 801, the temperature resistance grade is obviously improved, the heat-resistant temperature of the medium-voltage cable can be improved from 70 ℃ to more than 100 ℃, thus the application field of the medium-voltage cable is greatly widened, the high temperature resistance and the corrosion resistance of the medium-voltage cable are improved, the service life of the medium-voltage cable is prolonged, the outer sheath 8 comprises the high polymer compound layer 801, the synthetic resin layer 802 is arranged on the outer surface of the high polymer compound layer 801, the outer surface of the synthetic resin layer 802 is provided with a cross-linked polyethylene layer 803, the armor layer 7 comprises a tensile layer 701, the outer surface of the tensile layer 701 is provided with a woven steel wire mesh belt 702, and the outer surface of the woven steel wire mesh belt 702 is provided with a fire-resistant layer 703.
Furthermore, the filling material 4 is filled by winding the flame-retardant fiber rope, and a plurality of cable products are multi-core through the arrangement of the filling material 4, after the insulated wire cores or the wire pairs are cabled, firstly, the appearance is not round, secondly, a large gap is reserved between the insulated wire cores, therefore, a filling structure is added when the cables are cabled, and the filling structure is used for enabling the outer diameter of the cabled wires to be relatively round so as to be beneficial to the belting 6 and the outer sheath 8, so that the inside of the cables is more compact.
Further, the outer surface of the polymer compound layer 801 is adhered to the inner surface of the synthetic resin layer 802.
Further, the outer surface of the synthetic resin layer 802 is adhered to the inner surface of the crosslinked polyethylene layer 803.
Further, the outer surface of the tensile layer 701 is adhered to the inner surface of the woven wire mesh belt 702, and the outer surface of the woven wire mesh belt 702 is adhered to the inner surface of the fire-resistant layer 703.
Further, the thickness of macromolecular compound layer 801 is less than the thickness of crosslinked polyethylene layer 803, and through crosslinked polyethylene layer 803 and synthetic resin layer 802's setting, has stronger acid and alkali resistance and oil resistance, and its combustion products mainly are water and carbon dioxide, and is less to the harm of environment, satisfies modern fire control safety's requirement, and wearability and impact resistance all improve to remedy traditional medium voltage cable and easily received the environmental stress and cracked shortcoming, increased medium voltage cable's life.
The utility model discloses the theory of operation: through the setting of the belt 6 and the armor layer 7, the service hardness, the rigidity, the wear resistance and the impact resistance of the medium-voltage cable are improved, in addition, the medium-voltage cable also has stronger acid-base resistance and oil resistance, the service strength of the medium-voltage cable is improved, the cross-linked polyethylene layer 803 and the synthetic resin layer 802 have stronger acid-base resistance and oil resistance, the combustion products are mainly water and carbon dioxide, the damage to the environment is smaller, the requirement of modern fire safety is met, the wear resistance and the impact resistance are improved, so that the defect that the traditional medium-voltage cable is easy to crack due to environmental stress is overcome, the service life of the medium-voltage cable is prolonged, the comprehensive performances such as the mechanical property, the environmental stress cracking resistance, the chemical corrosion resistance, the creep resistance, the electrical property and the like of the medium-voltage cable are obviously improved through the arrangement of the outer sheath 8 and the high polymer layer 801, and the temperature resistant grade is obviously improved, the heat resistant temperature of the medium voltage cable can be improved from 70 ℃ to more than 100 ℃, thereby greatly widening the application field of the medium voltage cable, improving the high temperature resistance and corrosion resistance of the medium voltage cable, prolonging the service life of the medium voltage cable, mainly playing the role of resisting external electromagnetic interference through the inner shielding layer 2 and the outer shielding layer 5, preventing the interference of an electromagnetic field generated by the medium voltage cable to the surrounding environment and the effect of passing fault current in the using process of the medium voltage cable, eliminating the shielding effect of the surface potential of the power cable, binding a power line and eliminating induced electricity, such as the total shielding of the medium voltage cable, and improving the shielding effect of the medium voltage cable, secondly, many cable products are multicore, after the insulated wire cores or the wire pairs are cabled, the appearance is not round, and a large gap is left among the insulated wire cores, therefore, a filling structure is added during cabling, and the filling structure is used for enabling the outer diameter of the cabling to be relatively round so as to be beneficial to the wrapping belt 6 and the outer sheath 8 and enable the interior of the cable to be more compact.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. A composite fire-resistant medium voltage cable comprising a cable conductor (1), characterized in that: the cable conductor is characterized in that an inner shielding layer (2) is arranged on the outer surface of the cable conductor (1), an insulating layer (3) is arranged on the outer surface of the inner shielding layer (2), a filling material (4) is arranged on the outer surface of the insulating layer (3), an outer shielding layer (5) is arranged on the outer surface of the filling material (4), a wrapping tape (6) is wound on the outer surface of the outer shielding layer (5), an armor layer (7) is arranged on the outer surface of the wrapping tape (6), an outer sheath (8) is arranged on the outer surface of the armor layer (7), the outer sheath (8) comprises a high polymer compound layer (801), a synthetic resin layer (802) is arranged on the outer surface of the high polymer compound layer (801), a cross-linked polyethylene layer (803) is arranged on the outer surface of the synthetic resin layer (802), the armor layer (7) comprises a stretch-resistant layer (701), a woven steel wire mesh belt (702) is arranged on the outer surface of the stretch-resistant layer (701), and a fire-resistant layer (703) is arranged on the outer surface of the woven steel wire mesh belt (702).
2. The composite fire resistant medium voltage cable according to claim 1, characterized in that: the filler (4) is filled by winding a flame-retardant fiber rope.
3. The composite fire-resistant medium voltage cable according to claim 1, characterized in that: the outer surface of the polymer compound layer (801) is bonded to the inner surface of the synthetic resin layer (802).
4. The composite fire resistant medium voltage cable according to claim 1, characterized in that: the outer surface of the synthetic resin layer (802) is bonded to the inner surface of the crosslinked polyethylene layer (803).
5. The composite fire resistant medium voltage cable according to claim 1, characterized in that: the outer surface of the tensile layer (701) is adhered to the inner surface of the woven steel wire mesh belt (702), and the outer surface of the woven steel wire mesh belt (702) is adhered to the inner surface of the fire-resistant layer (703).
6. The composite fire-resistant medium voltage cable according to claim 1, characterized in that: the thickness of the polymer compound layer (801) is smaller than that of the crosslinked polyethylene layer (803).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221953072.4U CN218333198U (en) | 2022-07-27 | 2022-07-27 | Composite fire-resistant medium-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221953072.4U CN218333198U (en) | 2022-07-27 | 2022-07-27 | Composite fire-resistant medium-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218333198U true CN218333198U (en) | 2023-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221953072.4U Active CN218333198U (en) | 2022-07-27 | 2022-07-27 | Composite fire-resistant medium-voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218333198U (en) |
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2022
- 2022-07-27 CN CN202221953072.4U patent/CN218333198U/en active Active
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