CN105989918A - Self-repairing cable - Google Patents
Self-repairing cable Download PDFInfo
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- CN105989918A CN105989918A CN201510042254.4A CN201510042254A CN105989918A CN 105989918 A CN105989918 A CN 105989918A CN 201510042254 A CN201510042254 A CN 201510042254A CN 105989918 A CN105989918 A CN 105989918A
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- cable
- conductor
- sheath
- polymeric layer
- water
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Abstract
The invention relates to a self-repairing cable, which comprises a conductor, an insulating layer and a sheath. The insulating layer and the sheath successively wrap up the conductor from inside to outside. A water soluble expansion polymer layer is arranged between the insulating layer and the sheath. When water enters into a damaged cable, the water soluble expansion polymer layer expands when encounters water to fill the gap in the cable and repair the damaged part. Compared with the prior art, the self-repairing cable is cheap, safe, reliable and convenient to maintain.
Description
Technical field
The present invention relates to a kind of cable, especially relate to a kind of from more cable, when the destroyed water inlet of cable cover(ing),
Rapidly the position of cable bad is sealed, thus realize that oneself makes up, repairs.
Background technology
At present, conventional cable mainly by conductor (communication unit), insulation, packing material, band, metal tape,
Sheath forms.These cables are mainly used in electric power transmission or distribution, telecommunications, video and data transmission.
Produce, transport, install, use during, these cables may suffer damage, especially when direct-burried,
It is arranged in tunnel or underground piping, construction and installation instrument, the stone backfilling etc., all cable may be made
Become damage.These damages can be sheath, it is also possible to injures insulating barrier.When moisture penetration is to the insulation of damage
During layer, will result in electric leakage.3 heavy rains in Zhengzhou in 2013, less than the bimestrial time, have resulted in 5 dead 4
Wound, investigation display, reason is all because cable leakage.
The measure of blocking water that current cable is used is divided into radial water-resisting and longitudinal water-blocking, and basic structure is all to use resistance
Water band, water blocking yarn or waterproof paste etc..Waterstop, the shortcoming of water blocking yarn be water suction after expand, but can not with insulation,
Sheath material combines, and does not have viscosity, and heat resistance is bad, and tensile strength is relatively low.
The shortcoming of waterproof paste is that construction and installation are inconvenient, and block-water performance can not meet the requirement that blocks water of cable.
Content of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and a kind of low cost, safety are provided
Reliably, maintenance is easily from more cable.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of from more cable, including conductor, insulating barrier and sheath, described insulating barrier, sheath wrap from inside to outside successively
Overlay on outside conductor, be additionally provided with water between described insulating barrier and sheath and dissolve expanded polymeric layer；
When cable bad is intake, water dissolves expanded polymeric layer water-swellable, the space in filled cable, makes up
Repair the position damaged in cable.
Described conductor is provided with multiple, forms a conductor bundle, and described insulating barrier is coated on outside conductor bundle.
Described conductor is provided with multiple, and described insulating barrier is coated on outside each conductor, forms multiple insulated wire cores, described water
Dissolve expanded polymeric layer to be filled between insulated wire cores.
Described water dissolves water in expanded polymeric layer and dissolves the melt index of expanded polymer between 50～500.
Described water dissolves expanded polymeric layer for the polymer of organobentonite and polyethylene composition as base-material, adding
Plasticizer, stabilizer and color masterbatch,
Bentonite content is 25wt%,
The content of polyethylene is 70wt%,
The total content of plasticizer, stabilizer and color masterbatch is 5wt%.
Described water dissolves expanded polymeric layer and uses following methods to prepare: using extruding machine, Extruder temperature sets
It is set to a district: 135 DEG C, 2nd district: 150 DEG C, 3rd district: 170 DEG C, 4th district: 180 DEG C, 5th district: 190 DEG C, machine
Above-mentioned raw materials is joined extrusion molding in extruding machine by head: 200 DEG C-210 DEG C.
Described conductor is for by one or more conductors made in copper, tin-coated copper, aluminium.
Described sheath is the sheath being made up of PVC, PE or low smoke, zero halogen polyolefin.
Compared with prior art, the invention have the advantages that
First, low cost: the inserts owing to using is mainly bentonite, cheap.
2nd, security is high: is provided with water in cable of the present invention and dissolves expanded polymeric layer, when cable fault is intake,
Water dissolves expanded polymeric layer intumescent filler damaged part, oneself can make up rapidly, not result in electric leakage.
3rd, function is reliable: water of the present invention dissolves the polymer that expanded polymer uses organobentonite and polyethylene,
Meet water can expand rapidly, effectively protection cable.
4th, installation and repairing is convenient: the cable of the present invention, and appearance and size is identical with normal cable, and mounting and installation is with often
Rule cable is the same, will not increase extra installation cost.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the another kind of structural representation of the present invention.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the technology of the present invention side
Implement premised on case, give detailed embodiment and concrete operating process, but the protection model of the present invention
Enclose and be not limited to following embodiment.
Embodiment 1
As it is shown in figure 1, the present embodiment provides a kind of from more cable, including conductor the 1st, insulating barrier 2 and sheath 4,
Insulating barrier the 2nd, sheath 4 is coated on outside conductor 1 from inside to outside successively, is additionally provided with water-soluble between insulating barrier 2 and sheath 4
Solving expanded polymeric layer 3, wherein, it is a kind of polymerization substantially meeting water dissolvable expansion that water dissolves expanded polymer
Thing or for being made up of the mixture of substantially non-water swelling polymer and water-swellable filler, described chance water dissolves swollen
Swollen filler is mainly the polymer of organic expander soil and polyethylene.
In the present embodiment, conductor 1 is provided with multiple, forms a conductor bundle, and insulating barrier 2 is coated on outside conductor bundle.Absolutely
Edge layer 2 uses PVC, XLPE or other insulating materials are made.Conductor 1 is for by copper, tin-coated copper, aluminium
One or more conductors made.Sheath 4 is the sheath being made up of PVC, PE or low smoke, zero halogen polyolefin.
In water dissolving expanded polymeric layer 3, the melt index of water dissolving expanded polymer is between 50～500, and molecule is from about
1000000～8,000,000.
Conductor 1 uses the wire-drawing equipment of routine to make.
Water dissolves expanded polymeric layer 3 for the polymer of organobentonite and polyethylene composition as base-material, adding and increasing
Moulding agent, stabilizer and color masterbatch, bentonite content is 25wt%, and the content of polyethylene is 70wt%,
The total content of plasticizer, stabilizer and color masterbatch is 5wt%, blended, at 1500kg/cm2Pressure and 180 DEG C
At a temperature of extruding pelletization formed.
Water dissolves expanded polymeric layer 3 and uses following methods to prepare: use extruding machine, and Extruder temperature is arranged
It is a district: 135 DEG C, 2nd district: 150 DEG C, 3rd district: 170 DEG C, 4th district: 180 DEG C, 5th district: 190 DEG C, head:
200 DEG C-210 DEG C, above-mentioned raw materials is joined extrusion molding in extruding machine.
When more cable is because of sheath damage and water inflow certainly for the present invention, water dissolving expanded polymeric layer can play water suction and dissolve swollen
Swollen effect, makes damaged part automatically up after expansion, can effective ground resistance sealing invade further inside cable, prevent because of
The intrusion of water causes insulation to form water tree, thus reduces the service life of cable, and when insulation has damage, meeting
Playing good insulating effect, preventing electric leakage or short circuit, meeting after water dissolves the packing material water suction expanding to make electricity
The weight increase about 10%～300% of cable.
Embodiment 2
As in figure 2 it is shown, the present embodiment in more cable, conductor 1 is provided with multiple, and insulating barrier 2 is coated on respectively leads
In vitro, forming multiple insulated wire cores, water dissolves expanded polymeric layer 3 and is filled between insulated wire cores, and sheath 4 is arranged
At outermost layer.Remaining is with embodiment 1.
Claims (8)
1., from a more cable, including conductor, insulating barrier and sheath, described insulating barrier, sheath depend on from inside to outside
It secondary is coated on outside conductor, it is characterised in that be additionally provided with water between described insulating barrier and sheath and dissolve expanded polymeric layer；
When cable bad is intake, water dissolves expanded polymeric layer water-swellable, the space in filled cable, makes up
Repair the position damaged in cable.
2. according to claim 1 from more cable, it is characterised in that described conductor is provided with multiple, is formed
One conductor bundle, described insulating barrier is coated on outside conductor bundle.
3. according to claim 1 from more cable, it is characterised in that described conductor is provided with multiple, described
Insulating barrier is coated on outside each conductor, forms multiple insulated wire cores, and described water dissolves expanded polymeric layer and is filled in insulation
Between core.
4. according to claim 1 from more cable, it is characterised in that described water dissolves expanded polymeric layer
Middle water dissolves the melt index of expanded polymer between 50～500.
5. according to claim 1 from more cable, it is characterised in that described water dissolves expanded polymeric layer
For with the polymer of organobentonite and polyethylene composition as base-material, adding plasticizer, stabilizer and color masterbatch,
Bentonite content is 25wt%,
The content of polyethylene is 70wt%,
The total content of plasticizer, stabilizer and color masterbatch is 5wt%.
6. according to claim 5 from more cable, it is characterised in that described water dissolves expanded polymeric layer
Using following methods to prepare: to use extruding machine, Extruder temperature is set to a district: 135 DEG C, 2nd district: 150 DEG C,
Above-mentioned raw materials is added by 3rd district: 170 DEG C, 4th district: 180 DEG C, 5th district: 190 DEG C, head: 200 DEG C-210 DEG C
Extrusion molding in extruding machine.
7. according to claim 1 from more cable, it is characterised in that described conductor for by copper, tin-coated copper,
The conductor that one or more in aluminium are made.
8. according to claim 1 from more cable, it is characterised in that described sheath is for by PVC, PE
Or the sheath that low smoke, zero halogen polyolefin is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510042254.4A CN105989918A (en) | 2015-01-27 | 2015-01-27 | Self-repairing cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510042254.4A CN105989918A (en) | 2015-01-27 | 2015-01-27 | Self-repairing cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105989918A true CN105989918A (en) | 2016-10-05 |
Family
ID=57034800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510042254.4A Pending CN105989918A (en) | 2015-01-27 | 2015-01-27 | Self-repairing cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105989918A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938023A (en) * | 2017-12-29 | 2018-04-20 | 成都新柯力化工科技有限公司 | A kind of cable cover(ing) self-repair material and preparation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1585989A (en) * | 1999-12-20 | 2005-02-23 | 皮雷利·卡维系统有限公司 | Electric cable resistant to water penetration |
| CN201751954U (en) * | 2010-07-13 | 2011-02-23 | 武汉第二电线电缆有限公司 | Novel water-blocking moistureproof power cable |
| CN102982878A (en) * | 2012-11-26 | 2013-03-20 | 晶锋集团股份有限公司 | Semi-conductive waterproof cable |
| JP2014232637A (en) * | 2013-05-29 | 2014-12-11 | 日立電線株式会社 | Cable for indoor wiring |
| CN204375466U (en) * | 2015-01-27 | 2015-06-03 | 上海新益电力线路器材有限公司 | A kind of from more cable |
-
2015
- 2015-01-27 CN CN201510042254.4A patent/CN105989918A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1585989A (en) * | 1999-12-20 | 2005-02-23 | 皮雷利·卡维系统有限公司 | Electric cable resistant to water penetration |
| CN201751954U (en) * | 2010-07-13 | 2011-02-23 | 武汉第二电线电缆有限公司 | Novel water-blocking moistureproof power cable |
| CN102982878A (en) * | 2012-11-26 | 2013-03-20 | 晶锋集团股份有限公司 | Semi-conductive waterproof cable |
| JP2014232637A (en) * | 2013-05-29 | 2014-12-11 | 日立電線株式会社 | Cable for indoor wiring |
| CN204375466U (en) * | 2015-01-27 | 2015-06-03 | 上海新益电力线路器材有限公司 | A kind of from more cable |
Non-Patent Citations (1)
| Title |
|---|
| 朱洪法: "《催化剂载体制备及应用技术》", 31 October 2014, 石油工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938023A (en) * | 2017-12-29 | 2018-04-20 | 成都新柯力化工科技有限公司 | A kind of cable cover(ing) self-repair material and preparation method |
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