CN203351239U - A 27.5kV single-phase copper-core ethylene propylene rubber insulating cable for electrified railways - Google Patents
A 27.5kV single-phase copper-core ethylene propylene rubber insulating cable for electrified railways Download PDFInfo
- Publication number
- CN203351239U CN203351239U CN 201320358216 CN201320358216U CN203351239U CN 203351239 U CN203351239 U CN 203351239U CN 201320358216 CN201320358216 CN 201320358216 CN 201320358216 U CN201320358216 U CN 201320358216U CN 203351239 U CN203351239 U CN 203351239U
- Authority
- CN
- China
- Prior art keywords
- ethylene propylene
- propylene rubber
- cable
- conductor
- phase copper
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model relates to a cable and especially to a 27.5kV single-phase copper-core ethylene propylene rubber insulating cable for electrified railways. The 27.5kV single-phase copper-core ethylene propylene rubber insulating cable for electrified railways comprises a conductor and an insulating layer disposed on the outer side of the conductor and is characterized in that the insulating layer is an ethylene propylene rubber insulating layer, that a semi-conductive tape and semi-conductive rubber are wrapped between the conductor and the insulating layer, that a woven shielding layer is sleeved on the insulating layer, and that the woven shielding layer is wrapped in an isolating wrapping tape. The 27.5kV single-phase copper-core ethylene propylene rubber insulating cable for electrified railways has characteristics of simple structure, good bending performance, good mechanical performance, high strength, and a long service life.
Description
Technical field
The utility model relates to a kind of cable, especially relates to a kind of electric railway 27.5kV single-phase copper core ethylene propylene rubber insulated cable.
Background technology
As everyone knows, electric railway traction power is large, energy-conserving and environment-protective, can increase substantially transport capacity and speed possesses skills, the superiority of economy, environmental protection aspect, is the railway motive power mode that various countries' railway is first developed.Existing its insulating material of electric railway 27.5kV cable is crosslinked polyethylene, and conductor is copper wire, and its bending radius is to be not less than 15 times of cable finished product external diameter, and bending property is bad; Because the difference of material molecule structure causes high temperature resistant impact (conductor temperature of cable when the large electric current in short-term is increased to very soon 90 ℃ of working temperatures or surpasses in short-term working temperature to the 135 ℃) performance of cross-linking polyethylene materials and resistant to partial discharges performance not as the ethylene-propylene rubber material.
Current electric railway 27.5kV cable product conductor is copper wire, and its filament diameter generally is not less than 2.53mm, causes the bending property of cable bad; The main crosslinked polyethylene that adopts of insulation, its high temperature resistant impact and partial discharge performance are not so good as ethylene-propylene rubber, and crosslinked polyetylene insulated not as ethylene propylene rubber insulated soft, and bending property is bad.So the existing electric railway 27.5kV cable Cable Bending Radius that can't meet the demands is not more than 6 times, cable and waits use occasion.
Summary of the invention
The utility model is mainly for the existing above-mentioned technical problem of prior art, and a kind of electric railway 27.5kV single-phase copper core ethylene propylene rubber insulated cable with good mechanical performance and favorable elasticity is provided.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of electric railway 27.5kV single-phase copper core ethylene propylene rubber insulated cable, comprise conductor and be arranged on the outer field insulating barrier of conductor, it is characterized in that described insulating barrier is ethylene propylene rubber insulated layer, be surrounded with semi-conductive tape and semi-conductive rubber between described conductor and insulating barrier, described insulating barrier is arranged with woven shield outward, and described woven shield is provided with the isolation band outward.The utility model can adopt tinned copper wire as the cable conductor material, filament diameter meets the regulation of the 5th class or the 6th class conductor to meet the bending property of cable, its minimum bending radius can be as small as 6 times of finished cable external diameter, guarantee cable normally safe operation when so little bending radius, the insulating barrier of cable adopts high electrical insulation properties ethylene-propylene rubber material, and three layers of insulation and conductor screen, insulation shieldings are once extruded, and guarantee that cable has good electrical insulation properties and good mechanical performance.Ethylene-propylene rubber has good proof voltage to be impacted and the short time current overload performance, can well adapt to the operation present situation of the electric current of growing up in short-term of railway operation.
As preferably, described insulating barrier and woven shield are arranged with semi-conductive rubber layer and semi-conductive layer.Between conductor and insulation with outside insulating barrier, adopt semi-conductive tape wrapped, with balanced Electric Field Distribution.
As preferably, described isolation band is arranged with rubber inner sheath, braiding armouring, isolation band, rubber outer protection layer outward from the inside to surface successively.The metallic shield of cable adopts braiding structure, can when guaranteeing electric property, still have good bending property, and, can adjust braiding structure to adapt to service requirement according to the requirement of using the field joint earth-current.The sheath of cable adopts the high-strength rubber material, guarantees that cable has good mechanical performance and good bending property.
Therefore, the utlity model has the characteristics such as simple in structure, good bending property, good mechanical property, intensity are high, long service life.
The accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
As shown in Figure of description 1, a kind of electric railway 27.5kV single-phase copper core ethylene propylene rubber insulated cable, comprise conductor 1 and be arranged on the outer field insulating barrier 4 of conductor, insulating barrier 4 is ethylene propylene rubber insulated layer, be surrounded with semi-conductive tape 2 and semi-conductive rubber 3 between conductor 1 and insulating barrier 4, the outer woven shield 7 that is arranged with of insulating barrier 4, the outer isolation band 8 that is provided with of woven shield 7.Insulating barrier 4 is arranged with semi-conductive rubber layer 5 and semi-conductive layer 6 with woven shield 7.Outer rubber inner sheath 9, braiding armouring 10, isolation band 11, the rubber outer protection layer 12 of being arranged with successively from the inside to surface of isolation band 8.
The utility model overcomes the deficiency of prior art, on use material and structure, is innovated: conductor adopts tinned copper wire, and filament diameter is not more than 0.51mm; Insulation adopts the ethylene-propylene rubber material, and is shaped with conductor screen, three layers of co-extrusion of insulation shielding, guarantees the electrical insulation properties of cable; Metal screen layer adopts the tinned copper wire braiding structure, can keep to greatest extent the bending property of cable; Sheath adopts high-intensity elastomeric material, guarantees that cable has good mechanical performance and good elasticity; Nonmagnetic stainless steel wire or high-strength aluminum alloy silk braiding armour and high-strength rubber material oversheath also can be set as requested.The utility model is embodied in and is suitable for electric railway 27.5kV single-phase copper core ethylene propylene rubber insulated cable and mainly is applicable to the occasions such as feeder line that rated voltage 27.5kV electrifing railway supply circuit, autotransformer power supply and traction substation, section post, switching station, auto-transformer post are drawn.The utlity model has good electrical insulation properties, good mechanical performance and bending property, and the characteristic such as long service life.
Should be understood that this embodiment only is not used in restriction scope of the present utility model for the utility model is described.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (3)
1. an electric railway 27.5kV single-phase copper core ethylene propylene rubber insulated cable, comprise conductor (1) and be arranged on the outer field insulating barrier of conductor (4), it is characterized in that described insulating barrier (4) is for ethylene propylene rubber insulated layer, be surrounded with semi-conductive tape (2) and semi-conductive rubber (3) between described conductor (1) and insulating barrier (4), the outer woven shield (7) that is arranged with of described insulating barrier (4), the outer isolation band (8) that is provided with of described woven shield (7).
2. electric railway 27.5kV single-phase copper core ethylene propylene rubber insulated cable according to claim 1, is characterized in that described insulating barrier (4) and woven shield (7) are arranged with semi-conductive rubber layer (5) and semi-conductive layer (6).
3. electric railway 27.5kV single-phase copper core ethylene propylene rubber insulated cable according to claim 1 and 2, is characterized in that outer rubber inner sheath (9), braiding armouring (10), isolation band (11), the rubber outer protection layer (12) of being arranged with successively from the inside to surface of described isolation band (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320358216 CN203351239U (en) | 2013-06-21 | 2013-06-21 | A 27.5kV single-phase copper-core ethylene propylene rubber insulating cable for electrified railways |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320358216 CN203351239U (en) | 2013-06-21 | 2013-06-21 | A 27.5kV single-phase copper-core ethylene propylene rubber insulating cable for electrified railways |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203351239U true CN203351239U (en) | 2013-12-18 |
Family
ID=49751106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320358216 Expired - Fee Related CN203351239U (en) | 2013-06-21 | 2013-06-21 | A 27.5kV single-phase copper-core ethylene propylene rubber insulating cable for electrified railways |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203351239U (en) |
-
2013
- 2013-06-21 CN CN 201320358216 patent/CN203351239U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202258530U (en) | Electric railway 27.5kV single-phase alternating current power cable | |
| CN103943199A (en) | High-temperature-resistant compensation flat special cable | |
| CN205406106U (en) | Middle and high voltage oil resistant rubber semiconduction shielded cable | |
| CN204496968U (en) | Single core 6.6kV naval vessel midium voltage cable | |
| CN203351239U (en) | A 27.5kV single-phase copper-core ethylene propylene rubber insulating cable for electrified railways | |
| CN203192527U (en) | Transformer and current stabilizer connecting cable in ship illumination series circuit | |
| CN208596565U (en) | A kind of electronic automobile-used high-performance fire-resistant wire and cable | |
| RU148883U1 (en) | SINGLE CABLE POWER CABLE | |
| CN209374139U (en) | A kind of symmetrical power cable of low pressure | |
| CN203644456U (en) | Double shielded variable-frequency cable | |
| CN204102625U (en) | A kind of 30kV ethylene-propylene rubber insulated Monophase electric power cable used for rolling stock | |
| CN203351247U (en) | Anti-distortion wind energy cable | |
| CN202905273U (en) | Wind power generation power cable with nominal voltage of 35kV | |
| CN202434258U (en) | Novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable | |
| CN202042238U (en) | Marine fire-resisting power cable with cross-linked polyolefin protecting jackets | |
| CN204577167U (en) | A kind of Novel overhead insulated cable | |
| CN205302978U (en) | Strengthen resistance to compression type wind energy cable | |
| CN203192525U (en) | Fire-proof flame-retardant variable frequency cable | |
| CN205508476U (en) | Fire -retardant rubber of single heat -resisting low smoke and zero halogen of core copper conductor cover flexible cable | |
| CN103854770A (en) | Direct-current conducting wire | |
| CN204496966U (en) | 6.6kV naval vessel midium voltage cable | |
| CN220252882U (en) | Cable for wind power generation | |
| CN103887006A (en) | Pressure-reduction anti-interference power cable | |
| CN110070962A (en) | A kind of long-lived electric wire | |
| CN210403248U (en) | Cable for airfield light circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG WANMA CO., LTD. Free format text: FORMER NAME: ZHEJIANG WANMA CABLE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 311305 Ling'an Economic Development Zone, Zhejiang Province, South Ring Road, No. 88, No. Patentee after: ZHEJIANG WANMA CO., LTD. Address before: 311305 Ling'an Economic Development Zone, Zhejiang Province, South Ring Road, No. 88, No. Patentee before: Zhejiang Wanma Cable Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20160621 |