CN215451010U - 500KV crosslinked polyethylene power cable - Google Patents
500KV crosslinked polyethylene power cable Download PDFInfo
- Publication number
- CN215451010U CN215451010U CN202122079513.4U CN202122079513U CN215451010U CN 215451010 U CN215451010 U CN 215451010U CN 202122079513 U CN202122079513 U CN 202122079513U CN 215451010 U CN215451010 U CN 215451010U
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- CN
- China
- Prior art keywords
- layer
- conductor
- crosslinked polyethylene
- insulating
- power cable
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229920003020 cross-linked polyethylene Polymers 0.000 title claims abstract description 13
- 239000004703 cross-linked polyethylene Substances 0.000 title claims abstract description 13
- 239000004020 conductor Substances 0.000 claims abstract description 28
- 239000000872 buffer Substances 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004677 Nylon Substances 0.000 claims abstract description 13
- 229920001778 nylon Polymers 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004719 irradiation crosslinked polyethylene Substances 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010439 graphite Substances 0.000 claims abstract description 5
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000011810 insulating material Substances 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 239000004411 aluminium Substances 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims description 5
- 230000037303 wrinkles Effects 0.000 claims description 4
- 241000561734 Celosia cristata Species 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 210000001520 comb Anatomy 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims 1
- 239000010426 asphalt Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
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- Insulated Conductors (AREA)
Abstract
The utility model relates to a 500KV crosslinked polyethylene power cable which comprises a conductor, wherein the conductor is divided into a plurality of fan-shaped strand blocks and a central round conductor positioned at the central position, the fan-shaped strand blocks are separated by insulating materials, a double-layer wound semiconductive nylon belt is arranged outside the conductor, a buffer layer is arranged on the double-layer wound semiconductive nylon belt, the buffer layer is an elastic metal wire net with a saw-toothed cross section, an inner shielding layer, an insulating layer and an outer shielding layer are sequentially arranged outside the buffer layer from inside to outside, a double-layer wound water-blocking buffer belt is arranged on the insulating shielding layer, a corrugated aluminum sleeve is arranged on the double-layer wound water-blocking buffer belt, an asphalt layer is coated on the corrugated aluminum sleeve, an outer sheath is arranged outside the asphalt layer, a semiconductive graphite layer is coated on the outer sheath, and the insulating layer is made of an irradiation crosslinked polyethylene material. The utility model has high mechanical property, can fully absorb the expansion generated by temperature rise when the conductor runs, and can prevent external water from reentering, so that the water can not be longitudinally diffused along the cable.
Description
Technical Field
The utility model relates to the technical field of power cables, in particular to a 500KV crosslinked polyethylene power cable.
Background
In recent years, with the development of national economy, the amount of electricity used has increased dramatically, and the demand for large-section, large-capacity transmission cables has increased year by year, and in such applications, cable insulation is particularly challenging. Domestic 800mm2And the crosslinked cable conductive wire core is difficult to produce and unstable in quality due to equipment, process technology and the like. In the manufacturing process, the conductor shield and the main insulating layer are easily damaged, and the burrs are formed due to mechanical damage of the semiconductive layer. In addition, in the operation process of the cable, the good water resistance is ensured, so that the long-term stable operation of the cable is facilitated.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a 500KV crosslinked polyethylene power cable with good mechanical property aiming at the defects of the prior art.
The technical scheme adopted by the utility model is as follows:
the utility model provides a 500KV crosslinked polyethylene power cable, includes the conductor, the conductor is cut apart into the fan-shaped strand piece of a plurality of and is located the central circle conductor that central point put, separates through insulating material between the fan-shaped strand piece, the outside of conductor is equipped with the bilayer around package semiconduction nylon area, and this bilayer is equipped with the buffer layer around package semiconduction nylon area on, the buffer layer is the elastic metal wire net of cockscomb structure for the cross-section, and this buffer layer outside from interior to exterior is equipped with internal shield layer, insulating layer and external shielding layer in proper order, is equipped with the bilayer on the insulating shield layer around package buffering area that blocks water, and the bilayer is equipped with the wrinkle aluminium cover on the buffering area that blocks water around the package, coats the pitch layer on the wrinkle aluminium cover, and the pitch layer outside is equipped with the oversheath, and the overcoat coats and has the semiconduction graphite layer, the insulating layer adopts irradiation crosslinked polyethylene material.
Preferably, the inner shielding layer and the outer shielding layer are woven by tinned copper wires.
Further preferably, the outer sheath is made of irradiation cross-linked polyethylene material.
Further preferably, the fan-shaped strand blocks are separated by insulating crepe paper.
Further preferably, the number of the fan-shaped strand blocks is 5.
Compared with the prior art, the utility model has the beneficial effects that:
the cable is high in mechanical performance, the buffer layer is arranged between the double-layer wrapped semiconductive nylon belt and the inner shielding layer, accidental damage to the conductor shield and the main insulating layer can be prevented in the manufacturing process, and the phenomenon that stabs are formed due to mechanical damage of the semiconductive nylon belt is avoided; set up the bilayer between outer shielding layer and aluminium cover and wrap the buffering area that blocks water, the aluminium cover that can avoid external force to cause causes the pressure of conductor, causes the damage to the shielding layer when avoiding aluminium cover welding, and the produced inflation of temperature rise also can prevent outside moisture reentrant when can fully absorb the conductor operation simultaneously, makes moisture can not follow the vertical diffusion of cable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
illustration of the drawings: the cable comprises a graphite layer 1, an outer sheath 2, an asphalt layer 3, a corrugated aluminum sleeve 4, a double-layer wrapped water-blocking buffer tape 5, an outer shielding layer 6, an insulating layer 7, an inner shielding layer 8, a buffer layer 9, a double-layer wrapped semiconductive nylon tape 10, a central circular conductor 11, a fan-shaped strand block 12 and insulating corrugated paper 13.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
A500 KV crosslinked polyethylene power cable comprises a conductor, wherein the conductor is divided into five fan-shaped strand blocks 12 and a central round conductor 11 located in the center, and the fan-shaped strand blocks 12 are separated by insulating crepe paper 13. The split conductor is processed into several fan-shaped strand blocks 12, which are then insulated from each other into a cable, which becomes a circular conductor. The increase of alternating current resistance of the large-section conductor caused by the skin effect can be effectively reduced, and the loss and the heating of the cable are reduced.
The outside of conductor is equipped with the bilayer around package semiconduction nylon area 10, is equipped with buffer layer 9 on this bilayer winds package semiconduction nylon area 10, buffer layer 9 is the elastic wire net of cockscomb structure for the cross-section, and this buffer layer 9 outside from interior to exterior is equipped with internal shield layer 8, insulating layer 7 and outer shielding layer 6 in proper order, adopts the three-layer to crowd crowded package simultaneously of realizing internal shield layer 8, insulating layer 7, outer shielding layer 6 altogether, prevents at insulating layer 7 and internal shield layer 8 to and introduce external impurity between insulating layer 7 and the outer shielding layer 6. The three are tightly combined together, thereby increasing the initial free discharge voltage. By arranging the buffer layer 9 between the double-layer wrapped semiconductive nylon belt 10 and the inner shielding layer 8, accidental damage to the conductor shield and the main insulating layer 7 which may occur in the manufacturing process is prevented, and the formation of spurs due to mechanical damage of the semiconductive nylon belt is avoided.
The insulating shielding layer is provided with a double-layer wrapped water-blocking buffer belt 5, and the double-layer wrapped water-blocking buffer belt 5 is provided with a corrugated aluminum sleeve 4. The double-layer wrapped water-blocking buffer belt 5 buffers the pressure of the corrugated aluminum sleeve 4 on the conductor caused by external force, so that the conductor is prevented from being damaged; the expansion caused by temperature rise during operation can be fully absorbed, and the outer shielding layer 6 is well contacted with the corrugated aluminum sleeve 4; and meanwhile, the longitudinal water-blocking effect is achieved, when external force causes the damage of the corrugated aluminum sleeve 4 and water enters, the double-layer wrapped water-blocking buffer belt 5 can rapidly absorb water and expand, the damaged part of the corrugated aluminum sleeve 4 is blocked, and water is prevented from reentering, so that water cannot be longitudinally diffused along the cable.
The asphalt layer 3 is coated on the corrugated aluminum sleeve 4, so that the corrugated aluminum sleeve 4 can play roles of sealing, corrosion prevention, insulation and the like, and is protected from being damaged by high-temperature and low-temperature severe weather. The outer side of the asphalt layer 3 is provided with an outer sheath 2, the outer sheath 2 is coated with a semiconductive graphite layer, and the outer sheath 2 is used as an electrode in a pressure test. The insulating layer 7 is made of irradiation cross-linked polyethylene.
More specifically, the inner shielding layer 8 and the outer shielding layer 6 are woven by tinned copper wires.
More specifically, the outer sheath 2 is made of irradiation cross-linked polyethylene.
The foregoing merely represents preferred embodiments of the utility model, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. The utility model provides a 500KV crosslinked polyethylene power cable, includes the conductor, its characterized in that, the conductor is cut apart into the fan-shaped strand piece of a plurality of and is located the central circle conductor of central point position, separates through insulating material between the fan-shaped strand piece, the outside of conductor is equipped with the bilayer around the package semiconduction nylon area, and this bilayer is equipped with the buffer layer around the package semiconduction nylon area, the buffer layer is the elastic metal wire net of cockscomb structure for the cross-section, and this buffer layer outside from interior to exterior is equipped with internal shield layer, insulating layer and outer shielding layer in proper order, is equipped with the bilayer on the insulating shielding layer around the package buffering area that blocks water, is equipped with the wrinkle aluminium cover on the bilayer around the package buffering area, coats the pitch layer on the wrinkle aluminium cover, is equipped with the pitch layer outside the pitch layer, and the overcoat coats and has the semiconduction graphite layer, the insulating layer adopts irradiation crosslinked polyethylene material.
2. The 500KV crosslinked polyethylene power cable according to claim 1, wherein the inner and outer shields are braided from tinned copper wire.
3. A 500KV crosslinked polyethylene power cable according to claim 1, wherein the outer sheath is made of radiation crosslinked polyethylene material.
4. A 500KV crosslinked polyethylene power cable according to claim 1, wherein the fan-shaped strand blocks are separated by insulating crepe paper.
5. A 500KV crosslinked polyethylene power cable according to claim 1, wherein the number of the fan-shaped strand blocks is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079513.4U CN215451010U (en) | 2021-08-31 | 2021-08-31 | 500KV crosslinked polyethylene power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079513.4U CN215451010U (en) | 2021-08-31 | 2021-08-31 | 500KV crosslinked polyethylene power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215451010U true CN215451010U (en) | 2022-01-07 |
Family
ID=79697620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122079513.4U Active CN215451010U (en) | 2021-08-31 | 2021-08-31 | 500KV crosslinked polyethylene power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215451010U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118969385A (en) * | 2024-10-17 | 2024-11-15 | 穿越电缆集团有限公司 | A high voltage special-shaped conductor power cable |
-
2021
- 2021-08-31 CN CN202122079513.4U patent/CN215451010U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118969385A (en) * | 2024-10-17 | 2024-11-15 | 穿越电缆集团有限公司 | A high voltage special-shaped conductor power cable |
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