CN111653392A - Power cable capable of eliminating siphon effect - Google Patents
Power cable capable of eliminating siphon effect Download PDFInfo
- Publication number
- CN111653392A CN111653392A CN202010536172.6A CN202010536172A CN111653392A CN 111653392 A CN111653392 A CN 111653392A CN 202010536172 A CN202010536172 A CN 202010536172A CN 111653392 A CN111653392 A CN 111653392A
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- CN
- China
- Prior art keywords
- layer
- power cable
- siphon effect
- reinforcing layer
- waterproof
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
- H01B7/1815—Protections not provided for in groups H01B7/182 - H01B7/26 composed of longitudinal inserts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/184—Sheaths comprising grooves, ribs or other projections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/225—Longitudinally placed metal wires or tapes forming part of an outer sheath
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
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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
- 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 invention discloses a power cable for eliminating a siphon effect, which comprises a support core, wherein a plurality of accommodating grooves are formed in the side wall of the support core and are circumferentially arranged along the support core, conductive cores are arranged in the accommodating grooves, insulating layers are arranged outside the conductive cores, water-blocking buffer ropes are filled between the insulating layers of the conductive cores, and a water-blocking belt layer, a water-blocking buffer belt layer, a reinforcing layer, a sealing layer, an inner sheath and an outer sheath are sequentially arranged on the outer sides of the water-blocking buffer ropes from inside to outside; the outer side wall of the reinforcing layer is provided with a plurality of first bulges arranged along the circumferential direction of the reinforcing layer, the first bulges are abutted to the sealing layer, and a waterproof breathable layer is filled between the sealing layer and the reinforcing layer. The invention has the characteristics of improving the overall strength and sealing effect of the cable and effectively eliminating the siphon effect.
Description
Technical Field
The invention relates to the technical field of power cables, in particular to a power cable for eliminating a siphon effect.
Background
The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater.
Along with the continuous improvement of national standard of living, the performance requirement to power cable is higher and higher at present, and current power cable is difficult to compromise the leakproofness well (the leakproofness is poor easily to take place the siphon phenomenon, easily takes place liquid and leaks to the instrument or equipment in from the cable inside promptly), and the characteristics that intensity is high are to some special occasions, are difficult to satisfy people's user demand.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a power cable which has the characteristics of improving the overall strength and sealing effect of the cable and effectively eliminating the siphon effect.
The purpose of the invention is realized by the following technical scheme:
a power cable for eliminating a siphon effect comprises a supporting core, wherein a plurality of accommodating grooves which are circumferentially arranged along the supporting core are formed in the side wall of the supporting core, conductive cores are arranged in the accommodating grooves, insulating layers are arranged outside the conductive cores, water-blocking buffer ropes are filled between the insulating layers of the conductive cores, and a water-blocking belt layer, a water-blocking buffer belt layer, a reinforcing layer, a sealing layer, an inner sheath and an outer sheath are sequentially arranged on the outer sides of the water-blocking buffer ropes from inside to outside; the outer side wall of the reinforcing layer is provided with a plurality of first bulges arranged along the circumferential direction of the reinforcing layer, the first bulges are abutted to the sealing layer, and a waterproof breathable layer is filled between the sealing layer and the reinforcing layer.
Optionally, the first protrusion is provided with a groove, and a support bar is arranged in the groove.
Optionally, the support strip is a flexible steel strip.
Optionally, a plurality of second protrusions arranged along the circumferential direction of the outer sheath are arranged on the outer side wall of the outer sheath.
Optionally, the outer sheath is a halogen-free low-smoke flame-retardant polyolefin material.
Optionally, the material of the support core is resin mastic and a small amount of glass fibre.
Optionally, the sealing layer is a sealant or a watertight filler.
Optionally, the waterproof breathable layer is a composite of a PTFE membrane and cloth.
The invention has the following advantages: according to the invention, the strength of the inner layer of the cable can be improved by the arranged supporting core, and the strength of the middle layer of the cable can be improved by the arranged reinforcing layer, so that the overall strength of the cable is improved; the sealing layer can improve the sealing effect, and the waterproof breathable layer filled between the sealing layer and the reinforcing layer can prevent liquid molecules from leaking through the inside of the cable and play a role in eliminating the siphon effect; in addition, the insulating layers are arranged outside the conductive cores, the water blocking buffer ropes are filled between the insulating layers of the conductive cores, and the water blocking belt layer and the water blocking buffer belt layer are sequentially arranged on the outer sides of the water blocking buffer ropes.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a cross-sectional view of a power cable for eliminating a siphon effect according to the present invention;
FIG. 2 is a schematic structural view of a support core;
in the figure: 1-supporting core, 101-accommodating groove, 2-conductive core, 201-insulating layer, 3-water-blocking buffer rope, 4-water-blocking tape layer, 5-water-blocking buffer tape layer, 6-reinforcing layer, 601-first protrusion, 602-supporting strip, 7-sealing layer, 8-inner sheath, 9-outer sheath, 901-second protrusion and 10-waterproof breathable layer.
Detailed Description
The technical solution in the embodiments of the present application is described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-2, a power cable for eliminating a siphon effect includes a support core 1, a plurality of receiving grooves 101 circumferentially arranged on a sidewall of the support core 1, a conductive core 2 disposed in the receiving grooves 101, a cross section of the conductive core 2 perpendicular to a length direction being circular, and a material of the conductive core 2 may be copper or a copper alloy. The conductive core 2 is designed into a molded line twisted and layered compact structure, and the filling coefficient of the conductive core 2 reaches more than 98 percent; conductive water-repellent paste is filled in the gaps of the inner layer in the twisting process, and the gaps among the wire cores are densely filled; the structure eliminates the wire core gap, blocks the forming channel of the siphon effect of the conductive core 2, and effectively eliminates the siphon effect.
In this embodiment, the support core 1 is made of resin mastic and a small amount of glass fiber, and it is worth explaining that the resin mastic has the effects of durability, high temperature resistance, impermeability, compactness and insulation, and can reduce the leakage of liquid molecules from the inside of the cable, thereby achieving the effect of eliminating the siphon effect to a certain extent; and a small amount of glass fiber is matched, so that the strength is improved, and the service life of the cable can be prolonged.
In this embodiment, the insulating layers 201 are disposed outside the conductive cores 2, the water blocking buffer ropes 3 are filled between the insulating layers 201 of the conductive cores 2, and the water blocking tape layer 4, the water blocking buffer tape layer 5, the reinforcing layer 6, the sealing layer 7, the inner sheath 8 and the outer sheath 9 are sequentially disposed on the outer side of the water blocking buffer ropes 3 from inside to outside. The combined structure of the water-blocking buffer rope 3, the water-blocking tape layer 4 and the water-blocking buffer tape layer 5 can effectively prevent water from longitudinally spreading (namely along the length direction of the cable), and effectively eliminates the siphon effect.
In this embodiment, the insulating layer 201 is preferably made of high density polyethylene, which has good electrical insulation, toughness, and cold resistance, and has small permeability to liquid molecules, and can also have the effect of eliminating the siphon effect to a certain extent.
In this embodiment, the groove material of the reinforcing layer 6 can be polyethylene, polypropylene, etc., the outer side wall of the reinforcing layer 6 is provided with a plurality of first protrusions 601 arranged along the circumferential direction thereof, the first protrusions 601 abut against the sealing layer 7, a waterproof and breathable layer 10 is filled between the sealing layer 7 and the reinforcing layer 6, the waterproof and breathable layer 10 is a composite material of a PTFE film and cloth, and the composite material can allow gaseous molecules to freely pass through, prevent liquid molecules from passing through, prevent external liquid molecules from extending into the cable, and play a role in eliminating the siphon effect.
In addition, first arch 601 has played better supporting role for the structure is more stable, and in this embodiment, first arch 601 is equipped with the recess, is equipped with support bar 602 in the recess, and support bar 602 is the flexible steel band, has further guaranteed the supporting effect.
In this embodiment, the sealing layer 7 is a sealant or a watertight filler, and the watertight filler may be a single-component room temperature vulcanized silicone rubber, which can effectively prevent liquid molecules from leaking and play a role in eliminating a siphon effect.
In this embodiment, the outer sheath 9 is a halogen-free low-smoke flame-retardant polyolefin material, which has the characteristics of rat and termite resistance, low smoke, halogen-free and flame-retardant properties, and meanwhile, the material has a low heat release amount during combustion, is not easy to ignite surrounding articles, and is safer and more reliable.
In this embodiment, the inner sheath 8 is an inner sheath coated with a non-polar polymer material, which generally adopts polyethylene, polypropylene, etc., in order to enhance the strength and waterproof performance of the sheath.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A power cable for eliminating siphon effect is characterized in that: the waterproof buffer cable comprises a support core (1), wherein a plurality of accommodating grooves (101) arranged along the circumferential direction of the support core (1) are formed in the side wall of the support core (1), conductive cores (2) are arranged in the accommodating grooves (101), insulating layers (201) are arranged outside the conductive cores (2), waterproof buffer ropes (3) are filled between the insulating layers (201) of the conductive cores (2), and a waterproof belt layer (4), a waterproof buffer belt layer (5), a reinforcing layer (6), a sealing layer (7), an inner sheath (8) and an outer sheath (9) are sequentially arranged on the outer side of each waterproof buffer rope (3) from inside to outside;
the outer side wall of the reinforcing layer (6) is provided with a plurality of first bulges (601) arranged along the circumferential direction of the reinforcing layer, the first bulges (601) are abutted to the sealing layer (7), and a waterproof breathable layer (10) is filled between the sealing layer (7) and the reinforcing layer (6).
2. The siphon effect elimination power cable of claim 1, wherein: the first bulge (601) is provided with a groove, and a support strip (602) is arranged in the groove.
3. A siphon effect eliminating power cable according to claim 2, characterized in that: the supporting strips (602) are flexible steel strips.
4. The siphon effect elimination power cable of claim 1, wherein: the outer side wall of the outer sheath (9) is provided with a plurality of second protrusions (901) arranged along the circumferential direction of the outer sheath.
5. The siphon effect elimination power cable of claim 1, wherein: the outer sheath (9) is made of halogen-free low-smoke flame-retardant polyolefin material.
6. The siphon effect elimination power cable of claim 1, wherein: the support core (1) is made of resin cement and a small amount of glass fiber.
7. The siphon effect elimination power cable of claim 1, wherein: the sealing layer (7) is a sealant or a watertight filling agent.
8. The siphon effect elimination power cable of claim 1, wherein: the waterproof breathable layer (10) is made of a composite material of a PTFE membrane and cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010536172.6A CN111653392A (en) | 2020-06-12 | 2020-06-12 | Power cable capable of eliminating siphon effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010536172.6A CN111653392A (en) | 2020-06-12 | 2020-06-12 | Power cable capable of eliminating siphon effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111653392A true CN111653392A (en) | 2020-09-11 |
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ID=72351177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010536172.6A Pending CN111653392A (en) | 2020-06-12 | 2020-06-12 | Power cable capable of eliminating siphon effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111653392A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035416A (en) * | 2021-03-07 | 2021-06-25 | 广东电网有限责任公司广州供电局 | Low-voltage flexible cable |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6760522B2 (en) * | 2001-04-26 | 2004-07-06 | Fujikura Ltd. | Optical cable having forming tape and rip cords |
| CN203456136U (en) * | 2013-08-08 | 2014-02-26 | 安徽华鸿电气股份有限公司 | Full water-blocking submarine power cable |
| CN207052325U (en) * | 2017-07-31 | 2018-02-27 | 泛亚电缆有限公司 | A kind of low-smoke halogen-free flame-retardant sheath flexible cable |
| CN207474107U (en) * | 2017-09-05 | 2018-06-08 | 福建通宇电缆有限公司 | A kind of flame-proof wire |
| KR102014421B1 (en) * | 2019-01-15 | 2019-08-26 | 정경인 | Multi cable assembly |
| CN210167144U (en) * | 2019-05-22 | 2020-03-20 | 安徽凌宇电缆科技有限公司 | Flame-retardant, water-blocking and pressure-resistant cable for offshore wind power generation |
-
2020
- 2020-06-12 CN CN202010536172.6A patent/CN111653392A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6760522B2 (en) * | 2001-04-26 | 2004-07-06 | Fujikura Ltd. | Optical cable having forming tape and rip cords |
| CN203456136U (en) * | 2013-08-08 | 2014-02-26 | 安徽华鸿电气股份有限公司 | Full water-blocking submarine power cable |
| CN207052325U (en) * | 2017-07-31 | 2018-02-27 | 泛亚电缆有限公司 | A kind of low-smoke halogen-free flame-retardant sheath flexible cable |
| CN207474107U (en) * | 2017-09-05 | 2018-06-08 | 福建通宇电缆有限公司 | A kind of flame-proof wire |
| KR102014421B1 (en) * | 2019-01-15 | 2019-08-26 | 정경인 | Multi cable assembly |
| CN210167144U (en) * | 2019-05-22 | 2020-03-20 | 安徽凌宇电缆科技有限公司 | Flame-retardant, water-blocking and pressure-resistant cable for offshore wind power generation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035416A (en) * | 2021-03-07 | 2021-06-25 | 广东电网有限责任公司广州供电局 | Low-voltage flexible cable |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200911 |
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| RJ01 | Rejection of invention patent application after publication |