CN107134318B - LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable - Google Patents
LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable Download PDFInfo
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- CN107134318B CN107134318B CN201710270899.2A CN201710270899A CN107134318B CN 107134318 B CN107134318 B CN 107134318B CN 201710270899 A CN201710270899 A CN 201710270899A CN 107134318 B CN107134318 B CN 107134318B
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- ring set
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- retardant
- water
- inner sheath
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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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Abstract
The invention discloses LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cables, including three-phase cable core, the cable core is externally provided with insulating layer, the filled layer that blocks water, band and inner sheath are successively arranged outside the insulating layer, the inner sheath includes the first inner sheath, first inner sheath includes that the first fire-retardant ring set and first block water ring set, and is being arranged alternately connection along the ring set that blocks water of the first fire-retardant ring set described in cable long axis direction and first.It effectively blocks moisture can axially be impregnated along cable, influence cable electrical property, while reducing loss.
Description
Technical field
The present invention relates to a kind of cables, and in particular to LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable.
Background technique
If cable generates a large amount of toxic gas and flue dust in combustion, pole can be generated to the escape of personnel
Big influence, or even the hidden danger as safety.Power transmission carries high pressure, high current itself is also the ground for be easy to causeing fire behavior
Side.Therefore halide-free low-smoke fireproof cable is used widely in recent years, more especially higher to fire-fighting safety requirements public
Place, and the consistent favorable comment by users at home and abroad.But also occur while being widely used with halide-free low-smoke fireproof cable
New problem, since most of the fire retardant added in current used LSOH anti-flaming material is magnesium hydroxide or hydroxide
The hydroxide such as aluminium are easy to absorb moisture and deliquesce, can make the insulation resistance of material in this way because they belong to bases
Sharply decline, influences the electric property of cable.Especially to handle in the prior art water inlet cable be it is very difficult, in reality
In operation, if it find that end intake, can only amputate several meters of front end, have a look at the inside whether dry, if not all right after
It is continuous to saw forward, but such as whole cable has been intake, then and cable can not normal use.
Summary of the invention
The technical problem to be solved by the present invention is to existing cable structures, and moisture to be easily caused axially to immerse along cable, to cable
It causes to encroach on, and it is an object of the present invention to provide LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable, can effectively block over long distances
Moisture is axially impregnated along cable, influences cable electrical property, while reducing loss.
The present invention is achieved through the following technical solutions:
LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable, including three-phase cable core, the cable core are externally provided with insulation
Layer, the insulating layer are successively arranged the filled layer that blocks water, band and inner sheath outside, and the inner sheath includes the first inner sheath, described
First inner sheath includes that the first fire-retardant ring set and first block water ring set, and along the first fire-retardant ring set described in cable long axis direction and
First ring set that blocks water is arranged alternately connection.
Inner restrictive coating provided by the invention has the function of fire-retardant and longitudinal water-blocking.When end or cable jacket by
Mechanical external force damage causes after soaking at cracking, since most of the fire retardant added in existing LSOH anti-flaming material is
The hydroxide such as magnesium hydroxide or aluminium hydroxide are easy to absorb moisture and deliquesce, meeting in this way because they belong to bases
Decline the insulation resistance of material sharply, influences the electric property of cable, the present invention is by fire-retardant ring set and blocks water ring set in electricity
It is arranged alternately connection in power axial direction, can effectively block or slow down moisture penetration rate, prevents moisture from further axially expanding along cable
It dissipates, reduces unnecessary loss.
Preferably, the inner sheath further includes the second inner sheath, and second inner sheath is set to outside the first inner sheath, institute
Stating the second inner sheath includes that the second fire-retardant ring set and second block water ring set；Along the second fire-retardant ring set described in cable long axis direction and
Second ring set that blocks water is arranged alternately connection, and the second fire-retardant ring set and the first fire-retardant ring set axial length are equal, and described second
Block water ring set and the first ring set axial length that blocks water it is equal；And along cable the described second fire-retardant ring set and first in the radial direction
Water-ring set contact is opposite, and described second ring set that blocks water contacts relatively with the first fire-retardant ring set.
It is since the first fire-retardant ring set of the first inner sheath and first ring set that blocks water axially are being alternately distributed along cable, then fire-retardant
Layer weakens the fire-resisting protection effect of cable significantly, by the way that the second inner sheath, and the first fire-retardant ring are arranged outside the first inner sheath
Set and the second fire-retardant ring set and first block water ring set and second ring set that blocks water radially is in staggered distribution in cable, therefore first
Fire-retardant ring set and the second fire-retardant ring set, first ring set and second that blocks water block water that ring set is contactless or line contact, reduce contact area,
The flame retardant effect for increasing flame-retardant layer simultaneously, ensures water blocking layer in the resistance effect of cable axial direction.
Preferably, the overall diameter of the described first fire-retardant ring set interface end covers section outer diameter, institute less than the first fire-retardant ring set main ring
It states the first water-ring socket end interior diameter to block water greater than first ring set main ring set section internal diameter, the described first interface for blocking water ring set
End cap is located at the interface end connection of the first fire-retardant ring set；The overall diameter of the second fire-retardant ring set interface end is less than the second fire-retardant ring
Cover main ring cover section outer diameter, the second water-ring socket end interior diameter be greater than second block water ring set main ring set section internal diameter, it is described
Second interface end for blocking water ring set is set in the interface end connection of the second fire-retardant ring set.
This preferred embodiment is mainly used for increasing the first fire-retardant ring set and first and blocks water ring set and the second fire-retardant ring set and the
Two contacts area for blocking water ring set junction improve stable connection, guarantee the block-water effect to cable axial direction.
Preferably, waterstop, second resistance are equipped between the described first fire-retardant ring set and the first water-ring set contact surface
It fires and is equipped with waterstop between ring set and the second water-ring set contact surface, the waterstop is to smear nonwoven using water uptake expansion resin
Cloth is made.
By being covered between contact surface in the first fire-retardant ring set and the first water-ring and the second fire-retardant ring set and second blocks water
Waterstop is set between ring set contact surface, make it is contactless between the first fire-retardant ring set and the second fire-retardant ring set, prevent immerse cable
Moisture axially diffusing.And water uptake expansion resin smears waterstop made of non-woven fabrics, is capable of the moisture of active absorption immersion,
The first fire-retardant ring set and first is set to block water ring set and the second fire-retardant ring set and second ring set that blocks water directly contacts after water swelling
It is even closer.
Preferably, the described first fire-retardant ring set is made of low halogen polyvinyl chloride fire proofing, the second fire-retardant ring set
It is made of Halogen cross-linking type polyolefin flame-retardant material, described first blocks water ring set and second ring set that blocks water is all made of and extrudes plastic-aluminum
Polyethylene composite sheath.
Preferably, armor and oversheath are successively arranged outside the inner sheath.
It will receive the long range infringement of water for non-longitudinal water repellent electric cable, this distance is likely to be breached several hundred rice.And it is longitudinal
Water repellent electric cable is added to material water-proof material, the channel of energy blocks moisture longitudinal flow in cable outside the channel of moisture, therefore claims vertical
To blocking water, longitudinal water-blocking structure is divided into active hydroscopic water-resisting by the difference of material water-proof material and static state passively blocks water.
It actively draws water to block water to block water and expands band between insulated wire cores and radial waterproof layer, when waterstop encounters water
It absorbs water after point and expands rapidly, form the gel of certain altitude and higher-strength, realize longitudinal water-blocking, have for single-core cable
Simple process, high-efficient, easy for construction feature should also fill water blocking yarn, waterproofing rope etc. for multicore cable, so in stranding
It blocks water afterwards further around packet and expands band into waterproofing type cable core.
Compared with prior art, the present invention having the following advantages and benefits:
1, LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable of the present invention, when end or cable jacket by
Mechanical external force damage causes after soaking at cracking, since most of the fire retardant added in existing LSOH anti-flaming material is
The hydroxide such as magnesium hydroxide or aluminium hydroxide are easy to absorb moisture and deliquesce, meeting in this way because they belong to bases
Decline the insulation resistance of material sharply, influences the electric property of cable, the present invention is by fire-retardant ring set and blocks water ring set in electricity
It is arranged alternately connection in power axial direction, can effectively block or slow down moisture penetration rate, prevents moisture from further axially expanding along cable
It dissipates, reduces unnecessary loss；
2, LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable of the present invention, first due to the first inner sheath are fire-retardant
Ring set and first ring set that blocks water axially are being alternately distributed along cable, then flame-retardant layer weakens the fire-resisting protection effect of cable significantly,
By the way that the second inner sheath, and the first fire-retardant ring set and the second fire-retardant ring set and the first water-ring are arranged outside the first inner sheath
Set and second ring set that blocks water radially are in staggered distribution in cable, therefore the first fire-retardant ring set and the second fire-retardant ring set, first block water
Ring set and second blocks water that ring set is contactless or line contact, reduces contact area, the flame retardant effect for increasing flame-retardant layer simultaneously, ensures resistance
Resistance effect of the water layer in cable axial direction；
3, LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable of the present invention, by the first fire-retardant ring set and first
Waterstop is set between water-ring set contact surface and between the second fire-retardant ring set and the second water-ring set contact surface, makes first
It is contactless between fire-retardant ring set and the second fire-retardant ring set, prevent the moisture for immersing cable from axially diffusing.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is construction of cable schematic diagram of the present invention；
Fig. 2 is inner sheath partial cross section of the present invention structural schematic diagram.
Label and corresponding parts title in attached drawing: 1- cable core, 2- insulating layer, 3- block water filled layer, 4- band, 5-
First inner sheath, the fire-retardant ring set of 51- first, 52- first block water ring set, the second inner sheath of 6-, the fire-retardant ring set of 61- second, 62-
Two block water ring set, 7- waterstop, 8- armor, 9- oversheath.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
As shown in Figure 1, LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable of the present invention, including three-phase cable core 1, cable
Core 1 is externally provided with insulating layer 2, is successively arranged the filled layer 3 that blocks water, band 4 and inner sheath outside the insulating layer 2, the filled layer 3 that blocks water is adopted
It is filled with water blocking yarn.Inner sheath includes the first inner sheath 5, and the first inner sheath 5 includes the first fire-retardant ring set 51 and the first water-ring
Set 52, and be arranged alternately connection along the ring set 52 that blocks water of the described in cable long axis direction first fire-retardant ring set 51 and first and pass through glue
Connection
Embodiment 2.
It is further improved on the basis of embodiment 1, a kind of LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable,
Inner sheath further includes the second inner sheath 6, and the second inner sheath 6 is set to outside the first inner sheath 5, and the second inner sheath 6 includes the second resistance
Combustion ring set 61 and second blocks water ring set 62.Along the described in cable long axis direction second fire-retardant ring set 61 and second block water ring set 62 hand over
For arrangement connection, the second fire-retardant ring set 61 and the first fire-retardant 51 axial length of ring set are equal, second block water ring set 62 and first resistance
It is equal that water ring covers 52 axial lengths；And along cable, the described second fire-retardant ring set 61 is connect with first ring set 52 that blocks water in the radial direction
Touching is opposite, and second ring set 62 that blocks water contacts relatively with the first fire-retardant ring set 51.
Embodiment 3
As shown in Fig. 2, being further improved on the basis of embodiment 2, a kind of LSOH anti-flaming cross-linking type polyolefin is exhausted
The overall diameter of edge environment-friendly cable, the first fire-retardant 51 interface end of ring set covers section outer diameter, the first resistance less than the first fire-retardant 51 main ring of ring set
Water ring, which covers 52 interface end interior diameters and is greater than first, to block water 52 main ring of ring set set section internal diameter, and the first interface end for blocking water ring set 52 is arranged
It is connected in the interface end of the first fire-retardant ring set 51；The overall diameter of second fire-retardant 61 interface end of ring set is main less than the second fire-retardant ring set 61
Ring set section outer diameter, described second block water 62 interface end interior diameter of ring set greater than second block water 62 main ring of ring set set section internal diameter, it is described
Second interface end for blocking water ring set 62 is set in the interface end connection of the second fire-retardant ring set 61.First fire-retardant ring set 51 and the first resistance
Water ring, which covers, is equipped with waterstop 7 between 52 contact surfaces, the second fire-retardant ring set 61 and second, which block water, is equipped with resistance between 62 contact surface of ring set
Water band 7, waterstop 7 are made of to smear non-woven fabrics using water uptake expansion resin.First fire-retardant ring set 51 uses low halogen polyvinyl chloride
Fire proofing is made, and the second fire-retardant ring set 61 is made of Halogen cross-linking type polyolefin flame-retardant material, and first blocks water 52 He of ring set
Second ring set 62 that blocks water is all made of and extrudes plastic-aluminum polyethylene composite sheath.
Armor 8 and oversheath 9 are finally successively arranged outside inner sheath.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (4)
1. LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable, including three-phase cable core (1), the cable core (1) is externally provided with
Insulating layer (2), which is characterized in that the filled layer that blocks water (3), band (4) and inner sheath, institute are successively arranged outside the insulating layer (2)
Stating inner sheath includes the first inner sheath (5), and first inner sheath (5) includes that the first fire-retardant ring set (51) and first block water ring set
(52), and connection is being arranged alternately along the ring set (52) that blocks water of the described in cable long axis direction first fire-retardant ring set (51) and first；Institute
Stating inner sheath further includes the second inner sheath (6), and second inner sheath (6) is external set on the first inner sheath (5), in described second
Sheath (6) includes that the second fire-retardant ring set (61) and second blocks water ring set (62)；Along the second fire-retardant ring described in cable long axis direction
Set (61) and second ring set (62) that blocks water are arranged alternately connection, the second fire-retardant ring set (61) and the first fire-retardant ring set (51) axis
To equal length, described second block water ring set (62) and first ring set (52) axial length that blocks water it is equal；And along cable radial direction
The second fire-retardant ring set (61) contacts relatively with first ring set (52) that blocks water on direction, and described second blocks water ring set (62) and the
One fire-retardant ring set (51) contact is opposite；Armor (8) and oversheath (9) are successively arranged outside the inner sheath.
2. LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable according to claim 1, which is characterized in that described
The overall diameter of first fire-retardant ring set (51) interface end covers section outer diameter, first water-ring less than the first fire-retardant ring set (51) main ring
Set (52) interface end interior diameter is greater than first and blocks water ring set (52) main ring set section internal diameter, the described first interface for blocking water ring set (52)
End cap is located at the interface end connection of the first fire-retardant ring set (51)；The overall diameter of second fire-retardant ring set (61) interface end is less than
Two fire-retardant ring set (61) main rings cover section outer diameters, and described second ring set (62) the interface end interior diameter that blocks water blocks water ring set greater than second
(62) main ring covers section internal diameter, and the interface end that the described second interface end for blocking water ring set (62) is set in the second fire-retardant ring set (61) connects
It connects.
3. LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable according to claim 1, which is characterized in that described
First fire-retardant ring set (51) and first blocks water and is equipped with waterstop (7) between ring set (52) contact surface, the second fire-retardant ring set
(61) it blocks water with second and is equipped with waterstop (7) between ring set (62) contact surface, the waterstop (7) is using water uptake expansion resin
Non-woven fabrics is smeared to be made.
4. LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable according to claim 1, which is characterized in that described
First fire-retardant ring set (51) is made of low halogen polyvinyl chloride fire proofing, and the second fire-retardant ring set (61) is crosslinked using Halogen
Type polyolefin flame-retardant material is made, and described first blocks water ring set (52) and second ring set (62) that blocks water is all made of and extrudes the poly- second of plastic-aluminum
Alkene composite sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710270899.2A CN107134318B (en) | 2017-04-24 | 2017-04-24 | LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710270899.2A CN107134318B (en) | 2017-04-24 | 2017-04-24 | LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107134318A CN107134318A (en) | 2017-09-05 |
| CN107134318B true CN107134318B (en) | 2019-03-19 |
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ID=59715985
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710270899.2A Active CN107134318B (en) | 2017-04-24 | 2017-04-24 | LSOH anti-flaming cross-linking type polyolefin insulation environment-friendly cable |
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| CN (1) | CN107134318B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111370173A (en) * | 2020-04-07 | 2020-07-03 | 广东金阳光电缆实业有限公司 | Insulating flame-retardant environment-friendly cable |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016110749A (en) * | 2014-12-03 | 2016-06-20 | 株式会社ビスキャス | Electric power cable |
| CN205789252U (en) * | 2016-06-02 | 2016-12-07 | 陕西仕佳电缆有限公司 | Fire-retardant aluminium alloy power cable |
| CN206947003U (en) * | 2017-04-24 | 2018-01-30 | 成都新三电线厂 | Non-halogen flame-proof cross-linking type polyolefin insulation green cable |
-
2017
- 2017-04-24 CN CN201710270899.2A patent/CN107134318B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016110749A (en) * | 2014-12-03 | 2016-06-20 | 株式会社ビスキャス | Electric power cable |
| CN205789252U (en) * | 2016-06-02 | 2016-12-07 | 陕西仕佳电缆有限公司 | Fire-retardant aluminium alloy power cable |
| CN206947003U (en) * | 2017-04-24 | 2018-01-30 | 成都新三电线厂 | Non-halogen flame-proof cross-linking type polyolefin insulation green cable |
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| Publication number | Publication date |
|---|---|
| CN107134318A (en) | 2017-09-05 |
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Effective date of registration: 20190624 Address after: 610000 Renshou high economic development zone, Tianfu New District, Chengdu, Sichuan Patentee after: Sichuan tower cable winding wire Co.,Ltd. Address before: 610000 village five, construction village, Xindan Town, Xindu District, Chengdu, Sichuan Patentee before: CHENGDU XINSAN WIRE FACTORY |
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| CP03 | Change of name, title or address | ||
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Address after: No. 158, Shuxing Road, Yongxing Community, Shigao Street, Renshou County, Meishan City, Sichuan Province, 620000 Patentee after: Sichuan Tapai Cable Group Co.,Ltd. Address before: 610000 Renshou high economic development zone, Tianfu New District, Chengdu, Sichuan Patentee before: Sichuan tower cable winding wire Co.,Ltd. |