CN215342068U - Novel water-blocking medium-voltage crosslinked cable - Google Patents
Novel water-blocking medium-voltage crosslinked cable Download PDFInfo
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- CN215342068U CN215342068U CN202121174150.6U CN202121174150U CN215342068U CN 215342068 U CN215342068 U CN 215342068U CN 202121174150 U CN202121174150 U CN 202121174150U CN 215342068 U CN215342068 U CN 215342068U
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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
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model discloses a novel water-blocking medium-voltage crosslinked cable, which relates to the field of cables and comprises a circular conductor, wherein the outer surface of the circular conductor is wrapped with a shielding layer, the outer surface of the shielding layer is wrapped with a polyethylene insulating layer, and the outer surface of the polyethylene insulating layer is wrapped with an insulating shield. The utility model has the advantages that under the combined action of the aluminum plastic layer, the composite belt and the polyethylene sheath, the cable has good water blocking effect without gaps, the aim is to effectively inhibit water from longitudinally permeating into the circular conductor, the water blocking effect is well achieved, the service life of the circular conductor is prolonged, the polyethylene insulating layer and the insulating shield are arranged, electrified conductors with different electric potentials are isolated in electrical equipment, current can flow according to a certain path, the cable can also have the functions of mechanical support and fixation, arc extinction, heat dissipation, energy storage, moisture protection, mildew prevention or improvement of electric potential distribution and conductor protection of an electric field, and the cable has the function of insulating protection.
Description
Technical Field
The utility model relates to the field of cables, in particular to a novel water-blocking medium-voltage crosslinked cable.
Background
The application of domestic crosslinked polyethylene (XLPE) insulated power cables has been in the history of thirty years, and the XLPE insulated power cables are widely applied to power systems due to the good electrical and mechanical physical properties, and have the advantages of simple production process, light structure, large transmission capacity, convenience in installation, laying, maintenance and the like, no drop limitation and the like.
In the prior art, the traditional medium-voltage cross-linked cable is poor in water resistance, can be soaked in water for a long time or in an environment with unsmooth drainage, can cause breakdown accidents, can seriously affect the operation safety operation of a power grid, can also affect the flexibility of the cable, increase the weight of the cable and shorten the service life of the cable.
Therefore, it is necessary to invent a novel water-blocking medium voltage crosslinked cable to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a novel water-blocking medium-voltage crosslinked cable to solve the problem of poor water-blocking performance in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel middling pressure crosslinked cable blocks water, includes circular conductor, the surface parcel of circular conductor has the shielding layer, the surface parcel of shielding layer has the polyethylene insulating layer, the surface parcel of polyethylene insulating layer has insulation shield, insulation shield's surface is provided with the steel band around the covering, the steel band is provided with first water-blocking tape around the covering around the surface of covering, first water-blocking tape is provided with the inner liner around the surface of covering, the surface of inner liner is provided with the armor, the surface of armor is provided with the second water-blocking tape around the covering, the second water-blocking tape is provided with the polyethylene sheath around the surface of covering, the polyethylene sheath is high density polyethylene sheath.
Preferably, the outer surface of the steel belt wrapping layer is filled with a water blocking filling layer, the outer surface of the water blocking filling layer is adhered to the inner surface of the first water blocking belt wrapping layer, a good water blocking effect is achieved on the cable under the combined action of the aluminum plastic layer, the composite belt and the polyethylene sheath, no gap is reserved, the purpose is to effectively inhibit water from longitudinally permeating into the round conductor, the water blocking effect is well achieved, and the service life of the round conductor is prolonged.
Preferably, the quantity of circular conductor is three, and three is the annular setting, circular conductor sticiss circular conductor for the molded lines, and the molded lines sticiss circular conductor and include that water blocking material fills, through setting up the polyethylene insulating layer, keeps apart the electrified conductor of different electric potentials in electrical equipment, makes the electric current can circulate according to certain route, still can play mechanical support and fixed to and the effect of arc extinguishing, heat dissipation, energy storage, dampproofing, mould proof or the electric potential distribution and the protection conductor that improve the electric field, played insulation protection's effect to the cable.
Preferably, the polyethylene insulating layer is an XLPE crosslinked polyethylene insulating layer, the outer surface of the polyethylene insulating layer is adhered to the inner cavity of the insulating shield, a zinc coating and a steel wire layer are adopted through the armor layer, the using strength of the armor layer is increased, the corrosion resistance is good, meanwhile, the twisting direction of the steel wire layer is the left direction, the pitch-diameter ratio is controlled to be 9-12, the total gap does not exceed the diameter of one steel wire, 2 layers of 0.5mm water-blocking tapes are wrapped outside the steel wire layer, the water-blocking tapes are overlapped and wrapped, the overlapping rate is controlled to be 10% -30% of the bandwidth, and the using strength and the service life of the cable can be effectively increased.
Preferably, the inner liner comprises an aluminum-plastic layer and a composite tape, the aluminum-plastic layer is far away from one side of the inner liner and is adhered with the composite tape, the polyethylene sheath is arranged, the composite cable is non-toxic and tasteless, the crystallinity is 80% -90%, the softening point is 125-135 ℃, the use temperature can reach 100 ℃, the hardness, the tensile strength and the creep property are superior to those of low-density polyethylene, the composite cable is good in wear resistance, electric insulation property, toughness and cold resistance, and chemical stability, and is insoluble in any organic solvent and resistant to corrosion of acid, alkali and various salts at room temperature, so that the corrosion resistance and the aging resistance of the cable are improved, and the service life of the cable is prolonged.
Preferably, the armor includes galvanizing coat and steel wire layer, the one side that the armor was kept away from to the galvanizing coat is provided with the steel wire layer, through setting up insulation shield, separates the electrified conductor of different potentiometres in electrical equipment, makes the electric current can circulate according to certain route, still can play mechanical support and fixed to and arc extinguishing, heat dissipation, energy storage, dampproofing, mould proof or improve the electric potential distribution and the effect of protecting the conductor of electric field, played insulation protection's effect to the cable.
The utility model has the technical effects and advantages that:
1. the cable is well blocked by the combined action of the aluminum plastic layer, the composite belt and the polyethylene sheath, no gap is left, the aim is to effectively inhibit moisture from longitudinally permeating into the round conductor, the water blocking effect is well achieved, the service life of the round conductor is prolonged, the polyethylene insulating layer and the insulating shield are arranged, electrified conductors with different electric potentials are isolated in electrical equipment, current can flow according to a certain path, mechanical support and fixation can be achieved, arc extinction, heat dissipation, energy storage, moisture protection and mildew prevention can be achieved, the electric potential distribution of an electric field can be improved, the conductor can be protected, and the cable is protected in an insulating mode;
2. the use strength of the armor layer is improved by adopting the zinc coating and the steel wire layer as the armor layer, the armor layer also has the effect of good corrosion resistance, the twisting direction of the steel wire layer is the left direction, the pitch diameter ratio is controlled to be 9-12, the total gap does not exceed the diameter of one steel wire, 2 layers of 0.5mm water-blocking tapes are wrapped outside the steel wire layer, the water-blocking tapes are overlapped and wrapped, the overlapping rate is controlled to be 10-30% of the bandwidth, and the use strength and the service life of the cable can be effectively improved;
3. the polyethylene sheath is non-toxic and tasteless, the crystallinity is 80-90%, the softening point is 125-135 ℃, the use temperature can reach 100 ℃, the hardness, the tensile strength and the creep property are superior to those of low-density polyethylene, the polyethylene sheath is good in wear resistance, electric insulation, toughness and cold resistance, and good in chemical stability, is insoluble in any organic solvent and resistant to corrosion of acid, alkali and various salts at room temperature, the corrosion resistance and the aging resistance of the cable are improved, and the service life of the cable is prolonged.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a cross-sectional view of an inner liner construction of the present invention.
Fig. 3 is a cross-sectional view of an armor construction of the present invention.
In the figure: 1. a circular conductor; 2. a shielding layer; 3. a polyethylene insulating layer; 4. insulating shielding; 5. a steel belt wrapping layer; 6. a first water-blocking tape wrapping layer; 7. an inner liner layer; 71. an aluminum-plastic layer; 72. a composite tape; 8. an armor layer; 81. a zinc coating layer; 82. a steel wire layer; 9. a second water-blocking tape wrapping layer; 10. a polyethylene jacket; 11. a water-blocking filling layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a novel water-blocking medium-voltage crosslinked cable shown in figures 1-3, which comprises a circular conductor 1, wherein the outer surface of the circular conductor 1 is wrapped with a shielding layer 2, the outer surface of the shielding layer 2 is wrapped with a polyethylene insulating layer 3, the outer surface of the polyethylene insulating layer 3 is wrapped with an insulating shield 4, the outer surface of the insulating shield 4 is provided with a steel belt wrapping layer 5, the outer surface of the steel belt wrapping layer 5 is provided with a first water-blocking tape wrapping layer 6, the outer surface of the first water-blocking tape wrapping layer 6 is provided with an inner lining layer 7, the outer surface of the inner lining layer 7 is provided with an armor layer 8, the outer surface of the armor layer 8 is provided with a second water-blocking tape wrapping layer 9, the outer surface of the second water-blocking tape wrapping layer 9 is provided with a polyethylene sheath 10, and the polyethylene sheath 10 is a high-density polyethylene sheath;
furthermore, the water-blocking filling layer 11 is filled on the outer surface of the steel belt wrapping layer 5, the outer surface of the water-blocking filling layer 11 is adhered to the inner surface of the first water-blocking belt wrapping layer 6, and under the combined action of the aluminum plastic layer 71, the composite belt 72 and the polyethylene sheath 10, the cable is well blocked with no gap left, so that the aim of effectively inhibiting water from longitudinally permeating into the circular conductor 1 is fulfilled, the water-blocking effect is well achieved, and the service life of the circular conductor 1 is prolonged;
furthermore, the number of the circular conductors 1 is three, the three circular conductors are arranged in a ring shape, the circular conductors 1 are molded lines which tightly press the circular conductors, the molded lines tightly press the circular conductors and contain water-blocking materials for filling, and electrified conductors with different electric potentials are isolated in electrical equipment by arranging the polyethylene insulating layer 3, so that current can flow according to a certain path, and the circular conductors can also play a role in mechanical support and fixation, arc extinction, heat dissipation, energy storage, moisture prevention, mildew prevention or improvement of electric potential distribution of an electric field and conductor protection, and play a role in insulation protection on cables;
furthermore, the polyethylene insulating layer 3 is an XLPE (cross linked polyethylene) insulating layer, the outer surface of the polyethylene insulating layer 3 is adhered to the inner cavity of the insulating shield 4, the armor layer 8 adopts a zinc coating 81 and a steel wire layer 82, the use strength of the armor layer 8 is improved, the cable has good corrosion resistance, meanwhile, the twisting direction of the steel wire layer 82 is the left direction, the pitch diameter ratio is controlled to be 9-12, the total gap does not exceed the diameter of one steel wire, 2 layers of 0.5mm water-blocking tapes are wrapped outside the steel wire layer 82 in a wrapping mode, the water-blocking tapes are wrapped in an overlapping mode, the overlapping rate is controlled to be 10% -30% of the bandwidth, the use strength of the cable can be effectively improved, and the service life of the cable can be effectively prolonged;
further, the inner liner layer 7 comprises an aluminum-plastic layer 71 and a composite belt 72, one side of the aluminum-plastic layer 71, which is far away from the inner liner layer 7, is adhered with the composite belt 72, and the polyethylene sheath 10 is arranged, so that the cable is non-toxic and odorless, has the crystallinity of 80% -90%, the softening point of 125-135 ℃, the use temperature of 100 ℃, and the hardness, the tensile strength and the creep property which are superior to those of low-density polyethylene, has better wear resistance, electrical insulation property, toughness and cold resistance and good chemical stability, is insoluble in any organic solvent under the room temperature condition, resists corrosion of acid, alkali and various salts, improves the corrosion resistance and the aging resistance of the cable, and the service life of the cable;
further, armor 8 includes galvanizing coat 81 and steel wire layer 82, one side that armor 8 was kept away from to galvanizing coat 81 is provided with steel wire layer 82, through setting up insulation shield 4, keep apart the electrified conductor of different potentiometers in electrical equipment, make the electric current can circulate according to certain route, still can play mechanical support and fixed to and arc extinguishing, heat dissipation, energy storage, dampproofing, the mould proof or the effect of improving the potential distribution and the protection conductor of electric field, the effect of insulation protection has been played the cable.
The working principle of the utility model is as follows: the aluminum plastic layer 71, the composite belt 72 and the polyethylene sheath 10 play a good role in water resistance of the cable without leaving any gap, the aim of the cable is to effectively inhibit water from longitudinally permeating into the round conductor 1, the water resistance effect is well achieved, the service life of the round conductor 1 is prolonged, the polyethylene insulating layer 3 and the insulating shield 4 are arranged, electrified conductors with different electric potentials are isolated in electrical equipment, current can flow according to a certain path, the cable can also play a role in mechanical support and fixation, and the cable has the functions of arc extinction, heat dissipation, energy storage, moisture protection, mildew prevention or improvement of electric potential distribution of an electric field and conductor protection, the cable is insulated and protected, the armor layer 8 adopts the galvanized layer 81 and the steel wire layer 82, the use strength of the armor layer 8 is increased, the cable has a good corrosion resistance function, and the steel wire layer 82 is twisted in a left direction, the joint ratio is controlled to be 9-12, the total gap does not exceed the diameter of one steel wire, 2 layers of 0.5mm water-blocking tapes are wound outside the steel wire layer 82, the water-blocking tapes are wound in an overlapping mode, the overlapping rate is controlled to be 10-30% of the bandwidth, the use strength and the service life of the cable can be effectively improved, the polyethylene sheath 10 is arranged, the cable is non-toxic and odorless, the crystallinity is 80-90%, the softening point is 125-135 ℃, the use temperature can reach 100 ℃, the hardness, the tensile strength and the creep property are superior to those of low-density polyethylene, the cable is good in wear resistance, electric insulation, toughness and cold resistance, chemical stability is good, the cable is insoluble in any organic solvent and resistant to corrosion of acid, alkali and various salts at room temperature, the corrosion resistance and the aging resistance of the cable are improved, and the service life of the cable is prolonged.
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 may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (6)
1. A novel water-blocking medium-voltage crosslinked cable comprises a circular conductor (1) and is characterized in that: the outer surface of the round conductor (1) is wrapped with a shielding layer (2), the outer surface of the shielding layer (2) is wrapped with a polyethylene insulating layer (3), the outer surface of the polyethylene insulating layer (3) is wrapped with an insulating shield (4), the outer surface of the insulating shield (4) is provided with a steel belt wrapping layer (5), the outer surface of the steel belt wrapping layer (5) is provided with a first water-blocking tape wrapping layer (6), the outer surface of the first water-blocking tape wrapping layer (6) is provided with an inner liner (7), the outer surface of the inner liner (7) is provided with an armor layer (8), the outer surface of the armor layer (8) is provided with a second water-blocking tape wrapping layer (9), the outer surface of the second water-blocking tape wrapping layer (9) is provided with a polyethylene sheath (10), and the polyethylene sheath (10) is a high-density polyethylene sheath.
2. A novel water-blocking medium voltage crosslinked cable according to claim 1, characterized in that: the outer surface of the steel belt wrapping layer (5) is filled with a water blocking filling layer (11), and the outer surface of the water blocking filling layer (11) is adhered to the inner surface of the first water blocking belt wrapping layer (6).
3. A novel water-blocking medium voltage crosslinked cable according to claim 1, characterized in that: the number of the circular conductors (1) is three, the three circular conductors are arranged in an annular mode, the circular conductors (1) are molded lines and tightly press the circular conductors, and the molded lines and tightly press the circular conductors and contain water blocking materials for filling.
4. A novel water-blocking medium voltage crosslinked cable according to claim 1, characterized in that: the polyethylene insulating layer (3) is an XLPE cross-linked polyethylene insulating layer, and the outer surface of the polyethylene insulating layer (3) is adhered to the inner cavity of the insulating shield (4).
5. A novel water-blocking medium voltage crosslinked cable according to claim 1, characterized in that: the inner liner (7) comprises an aluminum-plastic layer (71) and a composite tape (72), wherein the aluminum-plastic layer (71) is far away from one side of the inner liner (7) and is adhered with the composite tape (72).
6. A novel water-blocking medium voltage crosslinked cable according to claim 1, characterized in that: the armor (8) comprises a zinc coating (81) and a steel wire layer (82), wherein the steel wire layer (82) is arranged on one side, far away from the armor (8), of the zinc coating (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121174150.6U CN215342068U (en) | 2021-05-28 | 2021-05-28 | Novel water-blocking medium-voltage crosslinked cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121174150.6U CN215342068U (en) | 2021-05-28 | 2021-05-28 | Novel water-blocking medium-voltage crosslinked cable |
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| Publication Number | Publication Date |
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| CN215342068U true CN215342068U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121174150.6U Active CN215342068U (en) | 2021-05-28 | 2021-05-28 | Novel water-blocking medium-voltage crosslinked cable |
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2021
- 2021-05-28 CN CN202121174150.6U patent/CN215342068U/en active Active
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