CN214624538U - Intelligent full-water-blocking rat-proof and termite-proof high-voltage power cable - Google Patents
Intelligent full-water-blocking rat-proof and termite-proof high-voltage power cable Download PDFInfo
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- CN214624538U CN214624538U CN202120536841.XU CN202120536841U CN214624538U CN 214624538 U CN214624538 U CN 214624538U CN 202120536841 U CN202120536841 U CN 202120536841U CN 214624538 U CN214624538 U CN 214624538U
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Abstract
The utility model discloses an intelligent all-water-blocking rat/ant-proof high-voltage power cable, including the outside around the conductor that has the water-blocking tape, the water-blocking tape outside sets gradually conductor shielding layer, insulating layer, insulation shielding layer and oversheath, still includes buffer layer and signal transmission optic fibre, and the buffer layer is hugged closely the setting of the insulation shielding layer outside, and signal transmission optic fibre inlays and establishes in the buffer layer, and the oversheath includes the high density polyethylene layer, physics type protection against insects layer and conducting layer, and the high density polyethylene layer sets up in the buffer layer outside, and the setting of physics type protection against insects layer is hugged closely on physics type protection against insects layer, and the setting of physics type protection against insects layer is hugged closely to the conducting layer. The conductor sets up the moisture that the water blocking layer absorbed the infiltration in this scheme, makes its volume increase rapidly, prevents moisture to continue the infiltration, and signal transmission optic fibre sets up inside the cable and monitors each layer temperature of cable core, realizes the intellectuality of the whole circuit of cable, and the protection against rodents ant function failure is avoided on physics type protection against insects layer, reaches the environmental protection and prevents the ant function.
Description
Technical Field
The utility model belongs to the technical field of the cable technique and specifically relates to a rat/ant-proof high voltage power cable is prevented to intelligent full blocking water.
Background
At present, most of high-voltage and ultrahigh-voltage power cables adopt a buried radiation mode, and the sheath materials of the wires and the cables are damaged by the environment such as oxidation, heat, illumination, external force, chemical erosion and the like in use and are also damaged by eating and eroding of organisms such as termites, mice and the like. The service life of the high-voltage cable is generally longer than 30 years, the high-voltage cable is often laid once, and the high-voltage cable is high in cost when being replaced under the condition of being buried for a long time. Consider that when the cable runs in the south, the cable is damaged by the white ants of the mice to cause power failure accidents and telecommunication interruption. The cable is laid underground, short circuit conditions are not easy to find in time, and serious fire accidents are often caused after short circuit occurs, so that social activities and national economy are seriously lost. In the rainy region throughout the year, after the cable is in ponding for a long time or is eaten and erodeed by termite, mouse and hurt, moisture gets into the cable and causes the sinle silk insulating surface to contact with moisture for a long time, and high tension cable transmission voltage is higher, especially under the effect of alternating current electric field, and the microstructure between the insulation will evolve into the water branch, and then changes into the electricity branch, finally leads to insulating electrical property to become invalid, the greatly reduced cable life. In the prior art, chemical additives are usually adopted, such as strong pungent taste of n-nonanoic acid vanillic amide, so that oral mucosa and gustatory nerves of murine animals are strongly stimulated to be chewed and cut, but after long-time laying, the rat and ant prevention effect is gradually lost, the service life of a cable is more than 30 years, the rat and ant prevention effect cannot be achieved for a long time, the environment is polluted, in addition, the cable in the prior art is not easy to discover hidden troubles of lines, and accidents are easily caused.
For example, a chinese patent document discloses "a rat and ant proof sheath rubber material for cables and a method for manufacturing the same", and its publication No. CN110698779A includes: 15-25 parts of chlorinated polyethylene 135A; 65-90 parts of chlorinated polyethylene 135B; 15-30 parts of an environment-friendly flame retardant; 50-75 parts of a filler; 3-8 parts of magnesium oxide; 2-6 parts of an environment-friendly stabilizer; 1-2 parts of a solid softener; 0.5-1 part of stearic acid; 1-2 parts of a coupling agent; 32-45 parts of a liquid softener; 1.5-3 parts of a rat-proof repellent; 1.5-2 parts of an ant-preventing agent; 1-4 parts of a coloring agent; 2-3 parts of a vulcanizing agent; 3-4 parts of a vulcanization assistant. The application reduces the pollution to the environment and the possibility of being bitten by the cable when the cable is used underground by adding the rat-proof repellent and the termite-proof agent; the main material is chlorinated polyethylene containing halogen elements, and the flame retardant and other materials are all environment-friendly materials, so that the harm to instruments and personnel is reduced by reducing the amount of the halogen elements. However, the proposal adds rat and ant prevention chemicals which cause harm to human body and environment.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome prior art's above-mentioned problem, provide an intelligent full water-blocking protection against rodents ant high voltage power cable. The cable has the functions of preventing water, rats and ants and monitoring hidden dangers of the cable.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an intelligent all-water-blocking rat-proof and termite-proof high-voltage power cable, including the conductor that the outside has the water-blocking tape, the water-blocking tape outside sets gradually the conductor shielding layer, the insulating layer, insulating shielding layer and oversheath, still include buffer layer and signal transmission optic fibre, the buffer layer is hugged closely the setting of the insulating shielding layer outside, signal transmission optic fibre inlays and establishes in the buffer layer, the oversheath includes the high density polyethylene layer, physics type protection against insects layer and conducting layer, the high density polyethylene layer sets up in the buffer layer outside, the setting of high density polyethylene layer is hugged closely on physics type protection against insects layer, the setting of physics type protection against insects layer is hugged closely to the conducting layer. The conductor in this scheme sets up the water blocking layer, and when moisture or moisture got into, the moisture blocking matter absorbs infiltration moisture or moisture rapidly, makes its volume increase rapidly to form a "dam", keep off water, prevent moisture to continue the infiltration, reach the purpose of the protection cable that blocks water. Signal transmission optic fibre can be protected to the buffer layer, and signal transmission optic fibre sets up and monitors each layer temperature of cable core in the cable inside, can know the hot spot distribution condition of cable full line, and the process that cable insulation temperature rose when monitoring overload and improvement are to the utilization ratio of cable current-carrying capacity, realize the intellectuality of the whole circuit of cable. This scheme adopts the physical type protection against insects layer to avoid laying because of adding chemical reagent for a long time and prevent that mouse ant function became invalid, reaches the environmental protection and prevents the ant function.
Preferably, the buffer layer comprises at least 3 layers of semi-conductive buffer water-blocking tapes, the first layer and the second layer of semi-conductive buffer water-blocking tapes are wrapped with the insulating shielding layer, and the signal transmission optical fiber is embedded in an interlayer between the second layer or the second layer and the outer semi-conductive buffer water-blocking tape. The signal transmission optical fiber is easy to break, and the signal transmission optical fiber is arranged in the semi-conductive buffer water-blocking tape interlayer, so that the optical fiber can be fixed and protected, and meanwhile, the semi-conductive buffer water-blocking tape plays a role in water prevention.
Preferably, the conductor is a round conductor, the inside of the conductor is longitudinally wrapped with a double-sided water-blocking tape and filled with water-blocking powder, and the water-blocking tape wrapped outside the conductor is a two-layer semi-conductive water-blocking tape. The waterproof coating has good water resistance performance of preventing water from immersing and permeating in radial and longitudinal directions, and is safe, reliable, long in service life and low in cost.
Preferably, the conductor is a split conductor, the double-sided water-blocking tape is longitudinally wrapped in each strand of the split conductor in a layered manner, and the center of the split conductor is filled with the water-blocking rope. The insulating property between strand blocks is kept while the waterproof performance is achieved, and the skin effect of the cable during operation can be greatly reduced.
Preferably, the conductor shielding layer is made of a plurality of layers of semi-conductive nylon tapes and super-smooth semi-conductive materials, the insulating layer is made of cross-linked polyethylene, and the insulating shielding layer is made of super-smooth semi-conductive materials.
Preferably, the buffer layer is arranged between the buffer layer and the outer sheath, grooves and lines are arranged on the outer side of the metal sheath, and asphalt is coated on the outer surface of the metal sheath. The asphalt coating is attached to the outer surface of the metal sheath, the groove grains improve the adhesive force, and the asphalt coating has excellent corrosion-resistant and waterproof performance and further enhances the water-resistant performance of the cable.
Preferably, the physical insect-proof layer is made of a special polyolefin material, the Shore hardness value of the special polyolefin material is 62-65, and the Vicat softening point is 108-120 ℃. A high-density polyethylene (HDPE) layer of the cable is extruded outside to form a high-hardness special polyolefin material to realize the function of preventing the ant from boring holes, the physical performance is utilized to prevent rats and ants, the failure of the function of preventing rats and ants due to the fact that chemical reagents are added for laying for a long time is avoided, and the environment-friendly ant-preventing function is achieved.
Therefore, the utility model discloses following beneficial effect has: (1) the cable has good radial, longitudinal and conductor water resistance performance, can prevent water from immersing and permeating in all directions, and is safe and reliable, long in service life and low in cost; (2) the metal sheath is internally provided with a signal transmission optical fiber, and the operating temperature of the high-voltage cable is monitored in an informationized and real-time manner; (3) the deinsectization outer sheath can meet the requirement of termite resistance, and has the advantages of low temperature resistance, ideal flexibility, good processing performance and no pollution.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the waterproof cable comprises a conductor 2, a double-sided water-blocking tape 3, a semiconductive water-blocking tape 4, a conductor shielding layer 5, an insulating layer 6, an insulating shielding layer 7, a semiconductive buffering water-blocking tape 8, a signal transmission optical fiber 9, a metal sheath 10, asphalt 11, a high-density polyethylene layer 12, a physical insect-proof layer and a conductive layer
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description. It should be noted that as used in the foregoing description, the terms "front," "back," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example (b):
in the embodiment shown in fig. 1, an intelligent full-water-blocking rat-proof and termite-proof high-voltage power cable comprises a conductor 1, a second annealed copper conductor meeting the national standard GB/T3956-2008 is adopted, a double-sided water-blocking tape 2 is longitudinally wrapped inside the conductor and water-blocking powder is filled in the conductor, two layers of semi-conductive water-blocking tapes 3 are wrapped outside the conductor, the conductor can also be a split conductor, the double-sided water-blocking tape is longitudinally wrapped in each strand of the split conductor in a layered manner, and a water-blocking rope is filled in the center of the split conductor. The insulating property between strand blocks is kept while the waterproof performance is achieved, and the skin effect of the cable during operation can be greatly reduced. When moisture or humidity enters, the water-blocking substance rapidly absorbs the infiltrated moisture or humidity, so that the volume of the water-blocking substance is rapidly increased, thereby forming a dam to block water and prevent the moisture from continuously permeating, and achieving the purpose of blocking water and protecting the cable. The outer side of the water blocking tape is sequentially provided with a conductor shielding layer 4, an insulating layer 5 and an insulating shielding layer 6, the conductor shielding layer adopts a plurality of layers of semi-conductive nylon tapes and super-smooth semi-conductive materials, the insulating layer adopts cross-linked polyethylene, and the insulating shielding layer adopts super-smooth semi-conductive materials. Two layers of semi-conductive buffer water-blocking tapes 7 are wound on the outer side of the insulating shielding layer, the semi-conductive buffer water-blocking tapes are bundled into the signal transmission optical fiber 8, and then one layer of semi-conductive buffer water-blocking tape is wound, the volume resistivity of the semi-conductive buffer water-blocking tape is less than 1 multiplied by 106 omega cm, the expansion height is more than 12mm, and the semi-conductive buffer water-blocking tape has excellent buffer protection and longitudinal water-blocking effects. The signal transmission optical fiber is easy to break, and the signal transmission optical fiber is arranged in the semi-conductive buffer water-blocking tape interlayer, so that the optical fiber can be fixed and protected, and meanwhile, the semi-conductive buffer water-blocking tape plays a role in water prevention. The outer side of the semi-conductive buffer water-blocking tape is provided with a metal sheath 9, the metal sheath can adopt welding corrugated aluminum or extruding corrugated aluminum, the outer surface of the metal sheath is provided with groove lines, and asphalt 10 is coated on the outer surface of the metal sheath. The groove lines improve the asphalt adhesion, and the asphalt coating has excellent corrosion resistance and water resistance, so that the water resistance of the cable is further enhanced. The outer sheath is arranged on the outer side of the metal sheath and comprises a high-density polyethylene layer 11, a physical insect prevention layer and a conducting layer 12, the high-density polyethylene layer is arranged on the outer side of the buffer layer, the physical insect prevention layer is arranged in a mode of being tightly attached to the high-density polyethylene layer, the conducting layer is arranged in a mode of being tightly attached to the physical insect prevention layer, the physical insect prevention layer is made of a special polyolefin material, the Shore hardness value of the special polyolefin material is 62-65, and the Vicat softening point is 108-120 ℃. A high-density polyethylene (HDPE) layer of the cable is extruded outside to form a high-hardness special polyolefin material to realize the function of preventing the ant from boring holes, the physical performance is utilized to prevent rats and ants, the failure of the function of preventing rats and ants due to the fact that chemical reagents are added for laying for a long time is avoided, and the environment-friendly ant-preventing function is achieved.
When the scheme is used, the signal transmission optical fiber is connected into the temperature detection device, the signal is converted into a digital analog signal, the analog signal is transmitted to the main control computer through the communication cable, the signal transmission optical fiber is placed inside the cable to monitor the temperature of each layer of the cable core, the hotspot distribution condition of the whole cable can be known, the process of the rise of the cable insulation temperature during overload monitoring and the utilization rate of the current carrying capacity of the cable are improved, and the intellectualization of the whole cable is realized. When moisture or humidity enters, the water-blocking substance rapidly absorbs the infiltrated moisture or humidity, so that the volume of the water-blocking substance is rapidly increased, thereby forming a dam to block water and prevent the moisture from continuously permeating, and achieving the purpose of blocking water and protecting the cable. This scheme adopts the physical type protection against insects layer to avoid laying because of adding chemical reagent for a long time and prevent that mouse ant function became invalid, reaches the environmental protection and prevents the ant function. Therefore, the cable has good radial, longitudinal and conductor water resistance, can prevent water from immersing and permeating in all directions, and is safe, reliable, long in service life and low in cost. The metal sheath is internally provided with a signal transmission optical fiber, and the operating temperature of the high-voltage cable is monitored in an informationized and real-time manner; the deinsectization outer sheath can meet the requirement of termite resistance, and has the advantages of low temperature resistance, ideal flexibility, good processing performance and no pollution.
It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner of practicing the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and examples. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.
Claims (7)
1. The utility model provides an intelligent all-water-blocking rat-proof and termite-proof high-voltage power cable, including the conductor that the outside has the water-blocking tape, the water-blocking tape outside sets gradually the conductor shielding layer, the insulating layer, insulating shielding layer and oversheath, characterized by, still include buffer layer and signal transmission optic fibre, the buffer layer is hugged closely the setting of the insulating shielding layer outside, signal transmission optic fibre inlays and establishes in the buffer layer, the oversheath includes the high density polyethylene layer, physics type protection against insects layer and conducting layer, the high density polyethylene layer sets up in the buffer layer outside, the setting of physics type protection against insects layer is hugged closely to physics type protection against insects layer, the setting of physics type protection against insects layer is hugged closely to the conducting layer.
2. The intelligent full water-blocking rat-proof ant-proof high-voltage power cable according to claim 1, wherein the buffer layer comprises at least 3 layers of semi-conductive buffer water-blocking tapes, the first and second layers of semi-conductive buffer water-blocking tapes are wrapped with insulating shielding layers, and the signal transmission optical fiber is embedded in an interlayer between the second layer or the second layer and the outer semi-conductive buffer water-blocking tape.
3. The intelligent full-water-blocking rat-proof ant-proof high-voltage power cable according to claim 1, wherein the conductor is a circular conductor, a double-sided water-blocking tape is longitudinally wrapped inside the conductor and filled with water-blocking powder, and the water-blocking tape wrapped outside the conductor is two layers of semi-conductive water-blocking tapes.
4. The intelligent full water-blocking rat-proof ant-proof high-voltage power cable according to claim 1, wherein the conductor is a split conductor, a double-sided water-blocking tape is longitudinally wrapped in each strand block of the split conductor in a layered manner, and a water-blocking rope is filled in the center of the split conductor.
5. The intelligent full water-blocking rat-proof ant-proof high-voltage power cable as claimed in claim 1, wherein the conductor shielding layer is made of multilayer semi-conductive nylon tapes and super-smooth semi-conductive materials, the insulating layer is made of cross-linked polyethylene, and the insulating shielding layer is made of super-smooth semi-conductive materials.
6. The intelligent full-water-blocking rat-proof ant-proof high-voltage power cable as claimed in claim 1, further comprising a metal sheath, wherein the metal sheath is arranged between the buffer layer and the outer sheath, grooves and lines are arranged on the outer side of the metal sheath, and asphalt is coated on the outer surface of the metal sheath.
7. The intelligent full-water-blocking rat and ant prevention high-voltage power cable as claimed in claim 1, wherein the physical insect-prevention layer is made of a special polyolefin material, the Shore hardness value of the special polyolefin material is 62-65, and the Vicat softening point is 108-120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120536841.XU CN214624538U (en) | 2021-03-15 | 2021-03-15 | Intelligent full-water-blocking rat-proof and termite-proof high-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120536841.XU CN214624538U (en) | 2021-03-15 | 2021-03-15 | Intelligent full-water-blocking rat-proof and termite-proof high-voltage power cable |
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| CN214624538U true CN214624538U (en) | 2021-11-05 |
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| CN202120536841.XU Active CN214624538U (en) | 2021-03-15 | 2021-03-15 | Intelligent full-water-blocking rat-proof and termite-proof high-voltage power cable |
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