CN205177434U - Resist back crosslinked polyethylene insulated cable that contracts - Google Patents
Resist back crosslinked polyethylene insulated cable that contracts Download PDFInfo
- Publication number
- CN205177434U CN205177434U CN201521021612.5U CN201521021612U CN205177434U CN 205177434 U CN205177434 U CN 205177434U CN 201521021612 U CN201521021612 U CN 201521021612U CN 205177434 U CN205177434 U CN 205177434U
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- CN
- China
- Prior art keywords
- insulated cable
- polyethylene insulated
- cable
- environment
- crosslinked
- 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.)
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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 utility model provides a resist back crosslinked polyethylene insulated cable that contracts, scribble the metallic conductor of vinyl binder including the surface, metallic conductor outward in proper order crowded package low density polyethylene and crosslinked polyethylene constitute the sinle silk, a plurality of sinle silks pass through behind warm water and the steam crosslinked to constitute the cable core with the environment -friendly gasket for packing, the cable core has the environment -friendly to wind the band around the package outward, crowds outward around the band and wraps the environment -friendly oversheath. Directly can also increase inner sheath and armor formation armor type structure around band and oversheath. The utility model discloses a vinyl binder and ultra -thin polyethylene layer are scribbled in the application, increase the adhesive force and the waterproof performance of conductor and insulating layer, change conductor and insulating layer contact, and the crystalline phase that reduces inherent thermal stress and crosslinked polyethylene forms, and the cross -linked insulation layer performance of messenger's cable obtains very big improvement, does not basically take place to shrink behind the insulating crosslinked of messenger's cable core to production efficiency is high, and the material accords with the environmental protection requirement.
Description
Technical field
The utility model relates to power cable field, specifically a kind of anti-retraction cross-linked polyethylene insulated cable.
Background technology
Cross-linked polyethylene insulated cable in use can produce insulation shrinkage to a certain extent, the transition joint of the insulation on cable conductor and cable or terminal can be caused to form space, even conductor can be exposed, form potential safety hazard, greatly reduce the reliability that cable security is powered, time serious, even cause short circuit, initiation fire.
Existing cross-linked polyethylene insulated cable generally adopts silane chemistries crosslinking process, the conductor of preheating extrudes the mixtures such as polyethylene base-material and crosslinking agent, is cross-linked in strict accordance with related process under warm water or saturated steam.In actual production, objective reality cable core insulation shrinkage rate does not reach relevant national standard and requires (shrinkage is within 4%); Or do not reach the requirement (the network system customer requirement shrinkage had is within 2%) of particular client.Cause cable finished product scrap or return goods, cause serious financial consequences.Some Enterprises is reach the requirement of shrinkage within 2%, then adopts cross-linking radiation.But irradiation cross-linking apparatus investment is huge, operating maintenance difficulty is large, production cost is high.
Utility model content
The utility model, in order to solve the problem of prior art, provides a kind of anti-retraction cross-linked polyethylene insulated cable, and core insulation is not shunk substantially, and production efficiency is high.
The utility model comprises the metallic conductor that surface scribbles vinyl binder, metallic conductor extrudes low density polyethylene (LDPE) and crosslinked polyethylene composition core outward successively, some cores are by forming cable core with environment-protection filling rope after warm water or vapor crosslinking, be surrounded with environment-friendly type twining package tape outside cable core, outside twining package tape, extrude environment-friendly type oversheath.
Further improvement, described vinyl binder thickness is 0.05mm ~ 0.1mm.
Further improvement, described low density polyethylene (LDPE) is ultrathin, and thickness is 0.1mm ~ 0.2mm.
Further improvement, is provided with metal armor layers between described environment-friendly type twining package tape and environment-friendly type oversheath, is provided with environment-friendly type inner sheath between metal armor layers and environment-friendly type twining package tape.
The utility model beneficial effect is:
1, realize crosslinked cable core insulation shrinkage rate between 0-0.5%, even core insulation is not shunk substantially.
2, more than when existing crosslinked cable is produced, conductor needs continuous heating to 80 to spend, the utility model can save the conductor high-temperature pre-heat operation of very complicated, improves speed of production and production efficiency.
3, the feature of environmental protection by adopting environment-friendly type auxiliary material and environment-friendly type oversheath to realize whole cable.
Accompanying drawing explanation
Fig. 1 is non-armored type anti-retraction cross-linked polyethylene insulated cable structural representation.
Fig. 2 is armored type anti-retraction cross-linked polyethylene insulated cable structural representation.
Embodiment
Non-armored type of the present utility model as shown in Figure 1, structure comprises surface and scribbles the metallic conductor 1 that thickness is 0.05mm ~ 0.1mm vinyl binder 2, the outer degree of extruding successively of metallic conductor 1 is that 0.1mm ~ 0.2mm low density polyethylene (LDPE) 3 and crosslinked polyethylene 4 form core, some cores are by forming cable core with gasket for packing 5 after warm water or vapor crosslinking, be surrounded with environment-friendly type twining package tape 6 outside cable core, outside environment-friendly type twining package tape 6, extrude environment-friendly type oversheath 9.
Armored type of the present utility model as shown in Figure 2, is provided with metal armor layers 8 between environment-friendly type twining package tape 6 and environment-friendly type oversheath 9, be provided with environment-friendly type inner sheath 7 between metal armor layers 8 and environment-friendly type twining package tape 6.
The utility model cross-linked polyethylene insulated cable adopts conventional low voltage contracting to extrude than extruder, simple and convenient, the basis of the existing equipment of factory, expressing technique and personnel just can realize, and speed of production and production efficiency are far away higher than original crosslinked cable production technology.When saving production owing to adopting the method for double-layer coextrusion, copper conductor continues to preheat operation, and operation relative ease, greatly improves production efficiency.Vinyl binder and ultra-thin polyethylene layer is coated with by using, increase adhesive force and the water resistance of conductor and insulating barrier, change conductor and the insulating barrier way of contact, the crystalline phase reducing inherent thermal stress and crosslinked polyethylene is formed, the cross linked insulation layer performance of cable is greatly improved, substantially do not shrink after making cable core insulation crosslinked, shrinkage controls within 0--0.5%.Metallic conductor after being simultaneously coated with binder can stop steam to enter cable core inside well when vapor crosslinking, avoid the oxidation of metallic conductor and blackout phenomenon, when can prevent cable from normally running better there is water-treeing phenomenon because of the moisture in contacting metal conductor in cross linked insulation, greatly extends the useful life of cable.
The utility model embody rule approach is a lot; the above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.
Claims (7)
1. an anti-retraction cross-linked polyethylene insulated cable, it is characterized in that: comprise the metallic conductor (1) that surface scribbles vinyl binder (2), metallic conductor (1) extrudes low density polyethylene (LDPE) (3) and crosslinked polyethylene (4) composition core outward successively, some cores are by forming cable core with gasket for packing (5) after warm water and vapor crosslinking, be surrounded with twining package tape (6) outside cable core, outside twining package tape (6), extrude oversheath (9).
2. anti-retraction cross-linked polyethylene insulated cable according to claim 1, is characterized in that: described vinyl binder (2) thickness is 0.05mm ~ 0.1mm.
3. anti-retraction cross-linked polyethylene insulated cable according to claim 1, is characterized in that: described low density polyethylene (LDPE) (3) thickness is 0.1mm ~ 0.2mm.
4. anti-retraction cross-linked polyethylene insulated cable according to claim 1, is characterized in that: described gasket for packing (5), twining package tape (6) and oversheath (9) are ep-type material.
5. anti-retraction cross-linked polyethylene insulated cable according to claim 1, is characterized in that: be provided with metal armor layers (8) between described twining package tape (6) and oversheath (9).
6. anti-retraction cross-linked polyethylene insulated cable according to claim 5, is characterized in that: be provided with inner sheath (7) between described metal armor layers (8) and twining package tape (6).
7. anti-retraction cross-linked polyethylene insulated cable according to claim 6, is characterized in that: described inner sheath (7) is ep-type material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521021612.5U CN205177434U (en) | 2015-12-10 | 2015-12-10 | Resist back crosslinked polyethylene insulated cable that contracts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521021612.5U CN205177434U (en) | 2015-12-10 | 2015-12-10 | Resist back crosslinked polyethylene insulated cable that contracts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205177434U true CN205177434U (en) | 2016-04-20 |
Family
ID=55741392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521021612.5U Active CN205177434U (en) | 2015-12-10 | 2015-12-10 | Resist back crosslinked polyethylene insulated cable that contracts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205177434U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355285A (en) * | 2015-12-10 | 2016-02-24 | 江苏远方电缆厂有限公司 | Anti-retraction crosslinked polyethylene insulated cable |
-
2015
- 2015-12-10 CN CN201521021612.5U patent/CN205177434U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355285A (en) * | 2015-12-10 | 2016-02-24 | 江苏远方电缆厂有限公司 | Anti-retraction crosslinked polyethylene insulated cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |