CN200953258Y - 500KV and below ultrahigh voltage cross-linked longitudinal waterproof cable - Google Patents
500KV and below ultrahigh voltage cross-linked longitudinal waterproof cable Download PDFInfo
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- CN200953258Y CN200953258Y CNU2006200918673U CN200620091867U CN200953258Y CN 200953258 Y CN200953258 Y CN 200953258Y CN U2006200918673 U CNU2006200918673 U CN U2006200918673U CN 200620091867 U CN200620091867 U CN 200620091867U CN 200953258 Y CN200953258 Y CN 200953258Y
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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
Abstract
The utility model relates a cross-link longitudinal waterproof cable in super high voltage of 500KV and lower voltage, which comprises water-resistance belt covered by one or more insulation wire cores and polyolefins cover. Waterproof materials can resist water longitudinally between water resistance belt and insulation wire cores. Each insulation wire core comprises a core, a cross-link polyethylene insulation layer, a semiconductive water resistance layer, a semiconductive layer, and a metal screen layer. Waterproof materials which can resist water longitudinally are filled in the core. The cross-link polyethylene insulation layer covers the outer of the core, and then covers semiconductive water resistance layer and semiconductive layer in turn, the metal screen layer covers the semiconductive layer outside. The utility model is characterized in that: the multi-core is water resistance silk and belt, filling water resistance silk in the insulation wire core, thus the good water resistance can reach the national standard, with simple technique and environmentalism.
Description
One, technical field: the utility model relates to a kind of ultra-high voltage cross-linking cable that blocks water, and the cable of particularly a kind of 10～500KV high pressure and the vertical stop water of ultra-high voltage cross-linking belongs to the ultra-high voltage cross-linking cable field.
Two, background technology: at present, the waterproof on the market and the cable that blocks water are along radially the blocking water of the cross-section of cable, and adopt metallic sheath to realize, for example, with plumbous, aluminium or plastic-aluminum combined sheath as waterproof, water-blocking element.But this mode that blocks water all is at core extrernal resistance water, in case there is water to flow into core, then block-water effect is bad, easily causes insulation sheath to puncture, and causes cable bad, and there is problem of environment pollution caused in plumbous, aluminium or plastic-aluminum combined sheath, and its feature of environmental protection is bad.
Three, summary of the invention:
1, goal of the invention: the utility model provides a kind of 500KV and the following ultra-high voltage cross-linking cable that vertically blocks water, its purpose is to solve the existing cable employing that blocks water and radially blocks water, and all water blocking layer is set in the core outside, block-water effect is bad, the problem that lead, aluminium or the plastic-aluminum combined sheath that is used for water blocking layer exists aspects such as contaminated environment, the feature of environmental protection be bad to exist.
2, technical scheme: the utility model is achieved through the following technical solutions:
A kind of 500KV and the following ultra-high voltage cross-linking cable that vertically blocks water, it is characterized in that: this cable coats water blocking tape layer by one or more insulated wire cores outside and polyolefin jacket constitutes, and has been filled with the material water-proof material of vertical resistance effect between water blocking tape layer and each insulated wire cores; Every eradication edge core is made of core, crosslinked polyetylene insulated layer, semiconductive water blocking tape layer, semi-conductive layer, metal screen layer, filled the material water-proof material of vertical resistance effect in the core, core is outer to coat crosslinked polyetylene insulated layer, the semi-conductive layer that crosslinked polyetylene insulated layer outside coats the semiconductive water blocking tape layer successively and extrude, semi-conductive layer outside clad metal screen.
Core by multiple conducting wires outer wrapped block water silk or waterstop after the stranded cylindrical structural that presses into.
When being many, insulated wire cores adopts 3～5.
It is an eradication edge core that above-mentioned cable is used for 110KV～500KV occasion, and it is made of core, insulating barrier, semi-conductive buffer layer, semiconductive water blocking layer, semi-conductive layer and metal screen layer; The core outside is coated with insulating barrier, semiconductive water blocking layer, semi-conductive layer, semi-conductive buffer layer and metal screen layer in order.
The metal filled coefficient of above-mentioned cable is 0.9～0.92, and the material water-proof material activity coefficient is 0.1～0.08.
The above-mentioned cross-section of cable is greater than 1000mm
2The time be that a fan-shaped stranded core is set in outermost insulating sleeve, fan-shaped twisted wire in-core is provided with a plurality of partitions, in each space that cut off to form a conductor wire core is set.
3, advantage and effect: by the enforcement of technical solutions of the utility model, can solve the existing cable employing that blocks water well radially blocks water, and all water blocking layer is set in the core outside, block-water effect is bad, the problem that lead, aluminium or the plastic-aluminum combined sheath that is used for water blocking layer exists aspects such as contaminated environment, the feature of environmental protection be bad to exist.It is a kind of rational in infrastructure that the utility model provides, technology is simple, the high-voltage crosslinking of the superior performance cable that vertically blocks water, its feature of environmental protection is good harmless to environment, has practicality, after filling material water-proof material outside online in-core and the insulated wire cores and between the outmost insulating barrier, its formation vertically blocks water, and water preventing ability satisfies national Specification.
Four, description of drawings: accompanying drawing 1 is the utility model structural representation;
Accompanying drawing 2 is the utility model 110KV～500KV structural representation;
Accompanying drawing 3 is the utility model 1000mm
2And the structural representation of above cable.
Accompanying drawing 4 is the utility model experiment structural representation that blocks water.
Five, embodiment:
The utility model provides a kind of improvement structure and performance cable, in ultra-high voltage cross-linking cable, if exist water and moisture will produce deterioration to insulation, the hydrone effect is arranged for a long time, can make to produce miniature tree dsicharge passage in the insulation, destroy the insulation of cable at last, cause cable breakdown.The utility model cable adopts the method that vertically blocks water, make cable meet water after, can make the unlikely rapid puncture of cable damaging water inlet place shutoff voluntarily, thereby gain time for the cable reparation.The utility model is to block water in conductor wire core, and the process of employing is harmless to environment, has practicality, and water preventing ability satisfies national Specification.
The utility model is specified as follows below in conjunction with accompanying drawing.
Embodiment 1:
As shown in Figure 1, the utility model is a kind of 500KV and the following ultra-high voltage cross-linking cable that vertically blocks water, this cable is close to coating polyolefin jacket 7 in outside, back by one or more insulated wire cores with the water blocking tape layer bag and constitutes, when to be used for voltage be 35KV～110KV occasion, adopt three or five to thoroughly do away with the edge core, when to be used for voltage be 110KV～500KV, adopt one to thoroughly do away with the edge core, be filled with the material water-proof material 2 of vertical resistance effect between water blocking tape layer 3 and each insulated wire cores; Every single core is made of core 1, crosslinked polyetylene insulated layer 5, semiconductive water blocking tape layer, semi-conductive layer 4, metal screen layer 6, filled the material water-proof material of vertical resistance effect in the core 1, the crosslinked polyetylene insulated layer 5 of core 1 outer coating, the semi-conductive layer 4 that crosslinked polyetylene insulated layer 5 outside coat the semiconductive water blocking tape layer successively and extrude, semi-conductive layer 4 outside clad metal screens 6.Core 1 by multiple conducting wires outer wrapped block water silk or waterstop after the stranded cylindrical structural that presses into.To block water when pressing silk or waterstop crushing form the material water-proof material that is filled between each root lead, realize blocking water of core.Above-mentioned cable is the cable that is used for 10～110KV voltage.
As shown in Figure 2, when the cable of the utility model preparation is used for the supply voltage of 110KV～500KV, then make the cable of an eradication edge core, it is made of core 1, insulating barrier 5, semi-conductive buffer layer 9, semiconductive water blocking layer 10, semi-conductive layer 4 and metal screen layer 6; Core 1 outside is coated with insulating barrier 5, semiconductive water blocking layer 10, semi-conductive layer 4, semi-conductive buffer layer 9 and metal screen layer 6 in order.
The activity coefficient of the filling material water-proof material of above-mentioned cable is 0.1～0.08, and the activity coefficient of metal is 0.9～0.92.
Embodiment 2:
As shown in Figure 3, when making cross section 〉=1000mm
2Cable the time, be that a fan-shaped stranded core 1 is set in outermost insulating sleeve, it is equivalent to the stranded conductor wire core in the above-mentioned cable, such structure can guarantee minimum eddy current line loss, fan-shaped twisted wire in-core is provided with a plurality of insulation and cuts off 11, each cuts off in 11 spaces that form a conductor wire core is set, each cut off 11 with corresponding core between fill material water-proof material.
Technology of the present utility model specifically realizes as follows:
(1), the conductor spacing blocks water
On cable cross-section, stranded through multiple conducting wires and press and on the cable conduction core that forms, adopt and fill material water-proof material, to realize blocking water purpose, its process is a conductor compacting, and the silk that will block water, band are coated on the lead, after pressing, this material pulverize powder, and consolidation is filled between the gap of lead, realizes blocking water of core.
(2), insulating barrier is to blocking water between sheath
When the multicore cable stranding, on the gap of its insulated wire cores, fill material water-proof material, be generally water blocking yarn, and when stranding around waterstop, its outer polyolefin jacket that extrudes again.
For single core ultra-high voltage cross-linking cable, for example 500KV and following electric pressure then extrude in extruding that seals or welding of aluminum jacket or wrapped rubber-like semiconductive water-blocking buffer layer and wrapped semiconductive waterstop, realize blocking water.
(3), the material water-proof material that adopts, select per minute usually for use, the water blocking yarn and the band of every gram 30ml speed of expansion.
(4), the principle that blocks water
The utility model cable after end water inlet, thereby can in 10 minutes, make whole material water-proof materials expand into the sealing purpose that design size reaches the gap.
(5), experimental technique, regulation according to international GB/T11017.1-2002/GB/Z18890.1-2002, cable to the utility model preparation experimentizes, among Fig. 4 the long approximately 50mm length of the middle part B of cable sample A is stripped out the ring-type insulating material, expose conductor wire core, in Fig. 4 device, in adding water tank C, add hot-water soak cable strip off place more than 95 ℃, be incubated 2 hours, natural cooling is at least 16 hours then, the cable two ends do not have moisture to ooze out therebetween, and its vertical water preventing ability is up to state standards.
The water preventing ability of the cable of the utility model preparation is good, and preparation technology is simple, pollution-free.
Claims (6)
1, a kind of 500KV and the following ultra-high voltage cross-linking cable that vertically blocks water, it is characterized in that: this cable coats water blocking tape layer by one or more insulated wire cores outside and polyolefin jacket (7) constitutes, and has been filled with the material water-proof material (2) of vertical resistance effect between water blocking tape layer (3) and each insulated wire cores; Every eradication edge core is made of core (1), crosslinked polyetylene insulated layer (5), semiconductive water blocking tape layer, semi-conductive layer (4), metal screen layer (6), filled the material water-proof material of vertical resistance effect in the core (1), the outer crosslinked polyetylene insulated layer (5) that coats of core (1), the semi-conductive layer (4) that crosslinked polyetylene insulated layer (5) outside coats the semiconductive water blocking tape layer successively and extrudes, semi-conductive layer (4) outside clad metal screen (6).
2,500KV according to claim 1 and the following ultra-high voltage cross-linking cable that vertically blocks water is characterized in that: core (1) by multiple conducting wires outer wrapped block water silk or waterstop after the stranded cylindrical structural that presses into.
3,500KV according to claim 1 and the following ultra-high voltage cross-linking cable that vertically blocks water is characterized in that: adopt 3～5 when insulated wire cores is many.
4,500KV according to claim 1 and the following ultra-high voltage cross-linking cable that vertically blocks water, it is characterized in that: it is an eradication edge core that above-mentioned cable is used for 110KV～500KV occasion, and it is made of core (1), insulating barrier (5), semi-conductive buffer layer (9), semiconductive water blocking layer (10), semi-conductive layer (4) and metal screen layer (6); Core (1) outside is coated with insulating barrier (5), semiconductive water blocking layer (10), semi-conductive layer (4), semi-conductive buffer layer (9) and metal screen layer (6) in order.
5,500KV according to claim 1 and the following ultra-high voltage cross-linking cable that vertically blocks water, it is characterized in that: the metal filled coefficient of above-mentioned cable is 0.9～0.92, material water-proof material activity coefficient 0.1～0.08.
6,500KV according to claim 1 and the following ultra-high voltage cross-linking cable that vertically blocks water, it is characterized in that: the above-mentioned cross-section of cable is greater than 1000mm
2The time be that a fan-shaped stranded core is set in outermost insulating sleeve, fan-shaped twisted wire in-core is provided with a plurality of partitions (11), in the space that each partition (11) forms a conductor wire core is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200918673U CN200953258Y (en) | 2006-07-04 | 2006-07-04 | 500KV and below ultrahigh voltage cross-linked longitudinal waterproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200918673U CN200953258Y (en) | 2006-07-04 | 2006-07-04 | 500KV and below ultrahigh voltage cross-linked longitudinal waterproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200953258Y true CN200953258Y (en) | 2007-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200918673U Expired - Fee Related CN200953258Y (en) | 2006-07-04 | 2006-07-04 | 500KV and below ultrahigh voltage cross-linked longitudinal waterproof cable |
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| Country | Link |
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| CN (1) | CN200953258Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290133A (en) * | 2011-06-08 | 2011-12-21 | 江苏超能电缆有限公司 | Underwater cable |
| CN103997007A (en) * | 2014-05-22 | 2014-08-20 | 国家电网公司 | Protection device for preventing windage yaw flashover of power transmission line |
| CN105957628A (en) * | 2016-07-01 | 2016-09-21 | 江苏珠影特种电缆有限公司 | Moisture-proof overhead insulated cable |
-
2006
- 2006-07-04 CN CNU2006200918673U patent/CN200953258Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290133A (en) * | 2011-06-08 | 2011-12-21 | 江苏超能电缆有限公司 | Underwater cable |
| CN103997007A (en) * | 2014-05-22 | 2014-08-20 | 国家电网公司 | Protection device for preventing windage yaw flashover of power transmission line |
| CN103997007B (en) * | 2014-05-22 | 2016-05-25 | 国家电网公司 | The inclined to one side arc protection device of a kind of power transmission line wind |
| CN105957628A (en) * | 2016-07-01 | 2016-09-21 | 江苏珠影特种电缆有限公司 | Moisture-proof overhead insulated cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070926 Termination date: 20150704 |
|
| EXPY | Termination of patent right or utility model |