CN212182001U - Power cable with good cold-resistant shielding property - Google Patents
Power cable with good cold-resistant shielding property Download PDFInfo
- Publication number
- CN212182001U CN212182001U CN202021182816.8U CN202021182816U CN212182001U CN 212182001 U CN212182001 U CN 212182001U CN 202021182816 U CN202021182816 U CN 202021182816U CN 212182001 U CN212182001 U CN 212182001U
- Authority
- CN
- China
- Prior art keywords
- layer
- shielding layer
- shielding
- semi
- power cable
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000004020 conductor Substances 0.000 claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920000742 Cotton Polymers 0.000 claims abstract description 5
- 229920001971 elastomer Polymers 0.000 claims description 13
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 10
- 239000004800 polyvinyl chloride Substances 0.000 claims description 10
- 239000000084 colloidal system Substances 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229920003049 isoprene rubber Polymers 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 2
- 230000005672 electromagnetic field Effects 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000005684 electric field Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a power cable with better cold-resistant shielding property, which relates to the field of power cables and solves the problems of cold resistance and poor shielding property of the power cable, the power cable with better cold-resistant shielding property comprises a conductor, a shielding layer and a heat-insulating layer, the shielding layer is arranged on the outer side of the conductor, the insulating layer is arranged on the outer side of the shielding layer, the semi-conductive wrapping shielding layer and the semi-conductive shielding layer are combined, so that an electric field is fully homogenized, the power cable is safe and reliable in operation, the metal shielding layer adopts a tinned copper wire braided layer, so that the cable has excellent electromagnetic shielding performance, the electromagnetic field of the cable is ensured not to interfere with the outside, meanwhile, the interference of an external electromagnetic field to the cable is eliminated, the heat insulation layer is made of heat insulation cotton, so that the cable can be normally used in a low-temperature environment, and the cable has the advantages of excellent cold resistance and good shielding property.
Description
Technical Field
The utility model relates to a power cable field especially relates to a better power cable of cold-resistant type shielding nature.
Background
Shielded cables are transmission lines in which signal wires are wrapped with a metallic mesh braid. The braid is typically red copper or tin-plated copper. The wire and cable industry is the second industry in China next to the automobile industry, and both the product variety satisfaction rate and the domestic market share rate exceed 90%. The total output value of the electric wire and the electric cable in China exceeds the United states worldwide, and the electric wire and the electric cable become the first country for producing the electric wire and the electric cable in the world. Along with the high-speed development of the China wire and cable industry, the number of newly added enterprises is continuously increased, and the overall technical level of the industry is greatly improved.
In severe cold areas, the usage amount of cables is increasing continuously, and in order to ensure the safe laying and installation of the cables in severe cold environments and the safe and stable operation, the cables are required to have good cold resistance. The outer sheath material of the existing crosslinked polyethylene insulated power cable is usually polyvinyl chloride, but the traditional cable manufactured by the cable is poor in cold resistance and easy to break when the environmental temperature is low, and in order to keep the normal work of the cable, the cable is required to be kept to shield the interference of external electromagnetism to the inside of the cable.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to above-mentioned defect, provide a better power cable of cold-resistant type shielding nature to solve the not cold-resistant and poor problem of shielding nature of power cable.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a better power cable of cold-resistant type shielding property, includes conductor, shielding layer and heat preservation, the conductor outside is equipped with the shielding layer, the shielding layer includes semi-conductive shielding layer, first metallic shield layer and second metallic shield layer, the semi-conductive shielding layer outside is equipped with first metallic shield layer, the first metallic shield layer outside is equipped with second metallic shield layer, the second metallic shield layer outside is equipped with the heat preservation.
As a further aspect of the present invention, the conductor outside is provided with an inner sheath, the inner sheath outside is provided with an insulating layer.
As a further aspect of the present invention, the conductor is made of copper, the inner sheath is made of multi-layer thin pvc sheath, and the insulating layer is made of ep rubber.
As a further scheme of the utility model, the shielding layer still includes the semiconduction around the package shielding layer, the insulating layer outside is equipped with the semiconductor shielding layer, the semiconductor shielding layer outside is equipped with the semiconduction around the package shielding layer, the semiconduction is equipped with first metal shielding layer around the package shielding layer outside.
As a further scheme of the utility model, it comprises the semiconduction colloid to lead the shielding layer, the semiconduction is the fibre area that the surface scribbled the semiconduction colloid around package shielding layer.
As a further aspect of the present invention, the filling layer is filled in the gap between the first metal shielding layer and the second metal shielding layer.
As a further scheme of the utility model, the filling layer material is polyurethane foam, first metallic shield layer and second metallic shield layer all adopt the preparation of tinned copper wire weaving layer to form.
As a further scheme of the utility model, the second metal shielding layer outside is equipped with the bearing rubber layer, the bearing rubber layer outside is equipped with the heat preservation, the heat preservation outside is equipped with the oversheath.
As a further proposal of the utility model, the bearing rubber layer is made of isoprene rubber, the heat-insulating layer is made of heat-insulating cotton, and the outer sheath is made of polyvinyl chloride.
To sum up, compared with the prior art, the utility model has the following beneficial effects:
(1) the semi-conductive wrapping shielding layer and the semi-conductive shielding layer are combined, so that an electric field is fully homogenized, the power cable is safe and reliable in operation, the structure is stable, and the processing is convenient.
(2) The metal shielding layer adopts the tinned copper wire braid, makes cable itself have excellent electromagnetic shielding performance, guarantees that the electromagnetic field of self does not have the interference to the external world, eliminates the interference of external electromagnetic field to cable itself simultaneously.
(3) The inner sheath and the outer sheath are both made of multiple layers of thin polyvinyl chloride sheaths, the temperature difference of the inner surface and the outer surface of each layer of thin polyvinyl chloride sheath is extremely small, effective protection can be achieved, and breakage can be avoided.
(4) The heat-insulating layer adopts heat-insulating cotton, so that the cable can be normally used in a low-temperature environment.
Therefore, the cable has the advantages of excellent cold resistance and better electromagnetic shielding property.
Drawings
Figure 1 is the sectional view of utility model medium cable core.
Fig. 2 is a cross-sectional view of a power cable with better cold-resistant shielding performance in the utility model.
Figure 3 is a side sectional view of utility model well cable core.
Reference numerals: the cable comprises a conductor 1, an inner sheath 2, an insulating layer 3, a semi-conductive shielding layer 4, a semi-conductive lapping shielding layer 5, a first metal shielding layer 6, a filling layer 7, a second metal shielding layer 8, a pressure-bearing rubber layer 9, a heat-insulating layer 10 and an outer sheath 11.
Detailed Description
The technical solution 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 some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Example 1
Shown by fig. 1-3, a better power cable of cold-resistant type shielding nature, including the cable core, the cable core includes conductor 1, inner sheath 2, insulating layer 3, semi-conductive shielding layer 4, semiconduction around package shielding layer 5 and first metallic shield 6, the 1 outside of conductor is equipped with inner sheath 2, the 2 outsides of inner sheath are equipped with inner sheath 2 insulating layer 3, the 3 outsides of insulating layer are equipped with semi-conductive shielding layer 4, the 4 outsides of semi-conductive shielding layer are equipped with semiconduction around package shielding layer 5, the semiconduction is equipped with first metallic shield 6 around package shielding layer 5 outsides.
Preferably, the conductor 1 is made of copper, and has the characteristics of excellent oxidation resistance, flexibility and conductivity.
Preferably, the inner sheath 2 is formed by a plurality of layers of thin polyvinyl chloride sheaths, so that the temperature difference between the inner surface and the outer surface of each layer of thin polyvinyl chloride sheath is extremely small, effective protection can be realized, and breakage can be avoided.
Preferably, the insulating layer 3 is made of ethylene propylene rubber, and has the characteristics of safe and reliable performance, long service life, and difficulty in charge breakdown and insulation.
Preferably, the semi-conductive shielding layer 4 is made of semi-conductive colloid, and the semi-conductive wrapping shielding layer 5 is a fiber tape coated with the semi-conductive colloid on the surface.
Preferably, the first metal shielding layer 6 is made of a tinned copper wire braid, the electromagnetic field of the cable does not interfere with the outside, and the effect is optimal when the braiding density of the tinned copper wire braid is more than 88%.
Example 2
Referring to fig. 1 to 3, the power cable with good cold-resistant shielding performance comprises a second metal shielding layer 8, a pressure-bearing rubber layer 9, a heat-insulating layer 10 and an outer sheath 11, wherein the heat-insulating layer 10 is arranged on the inner side of the outer sheath 11, the pressure-bearing rubber layer 9 is arranged on the inner side of the heat-insulating layer 10, the second metal shielding layer 8 is arranged on the inner side of the pressure-bearing rubber layer 9, a filling layer 7 is filled in a gap between the second metal shielding layer 8 and the first metal shielding layer 6, the cable product is three-core, the shapes of the insulated wire cores are not round, and a large gap is reserved between the insulated wire cores, so that a filling structure is required to be added during cabling, the filling structure forms the filling layer 7, and the filling layer 7 enables the cable cores to be.
Preferably, the material of the filling layer 7 is polyurethane foam, has no gap after filling, has ultralow-temperature thermal conductivity, is heat-resistant and heat-insulating, and is high-efficiency in insulation.
Preferably, the second metal shielding layer 8 is made of a tinned copper wire braid, interference of an external electromagnetic field on the cable is eliminated, and the effect is optimal when the braiding density of the tinned copper wire braid is over 88%.
Preferably, the bearing rubber layer 9 is made of isoprene rubber, and has good elasticity and wear resistance, excellent heat resistance and good chemical stability.
Preferably, the heat-insulating layer 10 is made of heat-insulating cotton, and has the characteristics of low flammability, water resistance and low heat conductivity coefficient.
Preferably, the outer sheath 11 is formed by a plurality of layers of thin polyvinyl chloride sheaths, and the temperature difference between the inner surface and the outer surface of each layer of thin polyvinyl chloride sheath is extremely small, so that effective protection can be realized, and breakage can be avoided.
To sum up, the utility model discloses a theory of operation is:
the cable adopts a three-core structure, each cable core is provided with an insulating layer 3 and a shielding layer which are relatively independent, the electromagnetic interaction between the cable cores is prevented, and further the practicability of the cable is influenced, the inner sheath 2 is used for protecting the conductor 1, the surface of the conductor 1 is prevented from being damaged, and the electric power transmission is influenced, the cross section of each cable core is circular, so that each cable core is round through the filling layer 7 so as to be beneficial to subsequent wrapping, the second metal shielding layer 8 outside the filling layer 7 can effectively eliminate the interference of an external electromagnetic field to the cable, the pressure-bearing rubber layer 9 can prevent the cable from being influenced by external extrusion and collision in the processes of transportation, installation, use and the like so as to influence the stability of the internal structure of the cable, the heat-insulating layer 10 can well isolate the influence of the external environment temperature of the cable on the internal part of the cable, the outer sheath 11 is used, it has effectively solved the not cold-resistant poor problem of shielding nature of power cable.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a better power cable of cold-resistant type shielding nature, includes conductor (1), shielding layer and heat preservation (10), its characterized in that, conductor (1) outside is equipped with the shielding layer, the shielding layer includes semi-conductive shielding layer (4), first metallic shield (6) and second metallic shield (8), semi-conductive shielding layer (4) outside is equipped with first metallic shield (6), first metallic shield (6) outside is equipped with second metallic shield (8), second metallic shield (8) outside is equipped with heat preservation (10).
2. The power cable with better cold-resistant shielding property according to claim 1, characterized in that an inner sheath (2) is arranged outside the conductor (1), and an insulating layer (3) is arranged outside the inner sheath (2).
3. The power cable with better cold-resistant shielding property according to claim 2, characterized in that the conductor (1) is made of copper, the inner sheath (2) is made of a multi-layer thin polyvinyl chloride sheath, and the insulating layer (3) is made of ethylene propylene rubber.
4. The power cable with better cold-resistant shielding property according to claim 2, wherein the shielding layer further comprises a semi-conductive wrapped shielding layer (5), a semi-conductive shielding layer (4) is arranged on the outer side of the insulating layer (3), a semi-conductive wrapped shielding layer (5) is arranged on the outer side of the semi-conductive wrapped shielding layer (4), and a first metal shielding layer (6) is arranged on the outer side of the semi-conductive wrapped shielding layer (5).
5. The power cable with better cold-resistant shielding property according to claim 4, wherein the semi-conductive shielding layer (4) is made of semi-conductive colloid, and the semi-conductive wrapping shielding layer (5) is a fiber tape coated with the semi-conductive colloid on the surface.
6. A power cable with better cold-resistant shielding property according to claim 4, characterized in that the gap between the first metal shielding layer (6) and the second metal shielding layer (8) is filled with a filling layer (7).
7. The power cable with better cold-resistant shielding property as claimed in claim 6, wherein the filling layer (7) is made of polyurethane foam, and the first metal shielding layer (6) and the second metal shielding layer (8) are both made of tinned copper wire braided layers.
8. The power cable with better cold-resistant shielding property according to claim 7, wherein a bearing rubber layer (9) is arranged outside the second metal shielding layer (8), an insulating layer (10) is arranged outside the bearing rubber layer (9), and an outer sheath (11) is arranged outside the insulating layer (10).
9. The power cable with better cold-resistant shielding property according to claim 8, wherein the pressure-bearing rubber layer (9) is made of isoprene rubber, the heat-insulating layer (10) is made of heat-insulating cotton, and the outer sheath (11) is made of polyvinyl chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021182816.8U CN212182001U (en) | 2020-06-23 | 2020-06-23 | Power cable with good cold-resistant shielding property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021182816.8U CN212182001U (en) | 2020-06-23 | 2020-06-23 | Power cable with good cold-resistant shielding property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212182001U true CN212182001U (en) | 2020-12-18 |
Family
ID=73762326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021182816.8U Expired - Fee Related CN212182001U (en) | 2020-06-23 | 2020-06-23 | Power cable with good cold-resistant shielding property |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212182001U (en) |
-
2020
- 2020-06-23 CN CN202021182816.8U patent/CN212182001U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205943507U (en) | Control cable for nuclear power station | |
| CN202711798U (en) | Mining signal cable | |
| CN212182001U (en) | Power cable with good cold-resistant shielding property | |
| CN101303916B (en) | Computer cable for nuclear power plant | |
| CN214956077U (en) | Anti-static and super-flexible special composite cable | |
| CN202042226U (en) | Shipboard flame-retardant shielded control cable | |
| CN212782825U (en) | Low temperature resistant control cable for nuclear power station | |
| CN210575192U (en) | High-shielding anti-interference photoelectric composite ultrahigh-voltage power cable | |
| CN210073378U (en) | Crosslinked polyethylene insulation braided shielding halogen-free low-smoke flame-retardant control cable | |
| CN201219042Y (en) | Computer cable for nuclear power plant | |
| CN101335107B (en) | Control electric cable for nuclear power plant | |
| CN210667869U (en) | High-salt and high-humidity resistant 0.6/1kV control cable | |
| CN209912597U (en) | Ultraviolet irradiation resistant nuclear-grade lighting cable | |
| CN203644459U (en) | Aluminium alloy flame-retardant frequency variable cable | |
| CN217485112U (en) | Multilayer signal shielding transmission cable | |
| CN201489873U (en) | Frequency converter soft cable suitable for 1,000V and lower than 1,000V for ships and warships | |
| CN216353408U (en) | Composite direct current flexible cable | |
| CN214956123U (en) | Medium-voltage waterproof power cable | |
| CN211654396U (en) | Environment-friendly high-flame-retardant ethylene propylene rubber insulated medium-voltage cable | |
| CN212256947U (en) | Graphene industrial cable | |
| CN216749337U (en) | Moisture-proof shielded cable | |
| CN210467417U (en) | Ultralow temperature resistant transmission and control cable for 10kV rated voltage oil platform | |
| CN221304337U (en) | Medium-voltage large-section flexible cable | |
| CN215183254U (en) | Offshore drilling platform power cable that moves about | |
| CN215988205U (en) | Flame-retardant, explosion-proof, rat-proof and anti-interference shielding RS485 communication line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201218 |