CN102751033B - Variable frequency cable for transformer station - Google Patents
Variable frequency cable for transformer station Download PDFInfo
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- CN102751033B CN102751033B CN201210262356.3A CN201210262356A CN102751033B CN 102751033 B CN102751033 B CN 102751033B CN 201210262356 A CN201210262356 A CN 201210262356A CN 102751033 B CN102751033 B CN 102751033B
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Abstract
The invention discloses a variable frequency cable for a transformer station, which solves the problem that the variable frequency cable currently used in the transformer station has low anti-interference capability, poor weather ability, short service life, and the like, and has the advantages of environmental protection, flame retardance, protection against termites, strong anti-interference capability, excellent electrical property, long service life and the like. The variable frequency cable structurally comprises a cable core, wherein the cable core comprises a plurality of main core conductors and a plurality of central core conductors which are arranged in a filling body, the outer wall of each main core conductor and the outer wall of each central core conductor are respectively provided with a conductor double-insulated layer; the main core conductors and the central core conductors are symmetrically arranged and intertwisted; and the outer wall of the filling body is wrapped with a cable tape layer, a cable shield layer and a cable sheath layer orderly from inside to outside.
Description
Technical field
The present invention relates to a kind of cable, relate in particular to a kind of transformer station frequency-changing cable.
Background technology
The frequency-changing cable that transformer station uses mostly at present is conventional quad, and its antijamming capability and weatherability are poor, and the life-span is short, once break down, replacement cost is high, and the safe operation of transformer station is brought to very large risk.
Chinese patent ZL01204437.7 discloses a kind of metal shielded flexible cable for monitoring, it is applied to underground moving transformer station electric power connection line, it comprises power line core conductor, eraser sheath, this power line core conductor outside sets gradually conductor shield, rubber insulation layer, insulation screen, and the pilot wire core conductor of two its outsides with insulating barrier is set in this eraser sheath.But the cable rubber sheath layer bad mechanical property that this patent is announced is wear-resisting, easily tear, and termite-proof effect is bad; Rubber material radioresistance weak effect, useful life is short, should not under radiation environment, use for a long time.
The Chinese patent ZL200810138007.4 of applicant's application discloses a kind of control cable for nuclear power station, its structure is: it comprises that conductor is as in obturator, the outer wall double-deck heterogeneous screen of parcel and the cable duplex sheath layer of described obturator, be also provided with conductor double insulating layer at the outer wall of every conductor simultaneously.But the cable that this patent is announced is without drainage thread, and charge accumulated causes that electric field is concentrated, and cable anti-electromagnetic interference capability is poor, and shielding poor stability, is not suitable for 500KV transformer station and power plant and other needs anti-forceful electric power interference range.
Chinese patent ZL201120085798.6 discloses a kind of flexible cable for the high-performance transducer of resistance to environmental form, it comprises cable core, insulating barrier, described cable core has several master cores, by-pass core and fire-retardant filler form, described master core is evenly distributed on cable core center, described by-pass core is centered around around described master core, described master core is electric current main transmission line road, the conductor of described master core is enclosed with composite insulation layer and metal screen layer outward successively, described by-pass core is the neutral line, formed by conductor and the insulating barrier being wrapped on conductor, between described master core and by-pass core, be filled with the fire-retardant filler of non-hygroscopic, described cable core is established inner covering outward successively, composite shielding layer and external sheath layer.But the cable that this patent is announced adopts individual layer insulation, and insulation property are not high; Without drainage thread, shield effectiveness is poor, and signal transmission unsteadiness can not ensure effective transmission of cable, can not be applicable to termite-proof environment.
Summary of the invention
Object of the present invention, exactly for overcoming above-mentioned the deficiencies in the prior art, provides a kind of transformer station frequency-changing cable, and this cable has environmental protection, fire-retardant, termite-proof, and antijamming capability is strong, superior electrical property, long service life.
For achieving the above object, the present invention adopts following proposal:
A kind of transformer station frequency-changing cable, it comprises cable core, cable core comprises and is arranged at the some master core conductors and the some center line core conductors that in obturator, meet the 5th class soft copper conductor requirement in GB3956, and the outer wall of every master core conductor and center line core conductor is equipped with conductor double hyer insulation layer; Described some master core conductors and stranded the forming of some center line core conductor symmetric arrays; Described obturator outer wall wraps up tape for cables layer, cable shield and the coat layer of power cable from inside to outside successively.
Described tape for cables layer is fire-retardant gluing type glass strap, makes fire resistance more reliable; In tape for cables layer, be provided with 7 × 0.25mm
2drainage thread.
Described cable shield is lapped shielding layer, and lapped shielding layer is compound copper-plastics band.
Described the coat layer of power cable is low-smoke zero-halogen flame-retardant termite-proof polyolefin jacket layer.
Described conductor double hyer insulation layer is primary insulation and outer layer insulation; Wherein, primary insulation is IXPE insulating barrier, and outer layer insulation is irradiated crosslinking low-smoke and halogen-free polyolefin insulation layer.
The present invention is the high-performance frequency conversion cable that is applied to transformer station, the internal layer of the outer wall of every master core conductor and center line core conductor is IXPE Insulation Material, improve the electrical property of product, reduce dielectric loss in use, make signal transmission more stable, reliable, thereby ensured effective transmission of cable; Skin is irradiated crosslinking low-smoke and halogen-free polyolefin insulation material, and it possesses excellent electrical property, high-low temperature resistant, useful life, mechanical and physical performance.Cable cover(ing) is low-smoke zero-halogen flame-retardant termite-proof polyolefin jacket material, the characteristic such as protective cover material has that anti-cracking performance is excellent, thermal contraction is little, easy processing, taste are little, LSOH anti-flaming, the most important thing is can be preferential prevent the termite destruction that bites.
Tape for cables is fire-retardant gluing type glass strap, makes fire resistance more reliable.Tape for cables layer adds 7 × 0.25mm
2drainage thread.The effect of drainage thread makes cable metal screen continuous, prevents phenomenon separated in screen, and can conduct leakage current, short circuit current, be convenient to ground connection.
Cable shield adopts compound copper-plastics band, makes shield effectiveness more reliable.The wrapped shielding of compound copper-plastics band has the shielding properties of copper strips, again containing moulding band mechanical stress, makes screen more firm, reliable.
The invention has the beneficial effects as follows: environmental protection, fire-retardant, termite-proof, antijamming capability is strong, superior electrical property, long service life.Cable material therefor is all low-smoke non-halogen flame-retardant ep-type materials, in fire-retardant, guaranteed cable the feature of environmental protection, improved cable useful life.Insulation adopts double-layer coextrusion technology and irradiation crosslinking technological, makes cable have more superior electrical property.Screen adopts lapped shielding layer to add the structural design of drainage thread, guarantees the anti-electromagnetic interference capability that cable is very strong.Oversheath adopts termite-proof material, ensures that cable can use for a long time under termite-proof environment.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Wherein, 1. conductor, 2. primary insulation, 3. outer layer insulation, 4. obturator, 5. drainage thread, 6. tape for cables layer, 7. lapped shielding layer, 8. the coat layer of power cable.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described.
In Fig. 1, cable core comprises and is arranged at the three master core conductors and the three center line core conductors that in low-smoke non-halogen flame-retardant obturator 4, meet the 5th class soft copper conductor requirement in GB3956, three master core conductors and three stranded forming of center line core conductor symmetric arrays; All wrapping inner layer insulation 2 and outer layer insulations 3 successively of the outer wall of every master core conductor and center line core conductor, wherein primary insulation 2 is IXPE insulating barrier; Outer layer insulation 3 is irradiated crosslinking low-smoke and halogen-free polyolefin insulation layer.Outer wall at obturator 4 wraps up tape for cables layer 6, cable shield and the coat layer of power cable 8 from inside to outside successively.
Tape for cables layer 6 is fire-retardant gluing type glass strap, makes fire resistance more reliable; In tape for cables layer 6, be provided with 7 × 0.25mm
2drainage thread.Cable shield is lapped shielding layer 7, and lapped shielding layer 7 is compound copper-plastics band.The coat layer of power cable 8 is low-smoke zero-halogen flame-retardant termite-proof polyolefin jacket layer.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendments that creative work can make or distortion still in protection scope of the present invention.
Claims (1)
1. transformer station's frequency-changing cable, is characterized in that, it comprises cable core, and cable core comprises the some master core conductors and the some center line core conductors that are arranged in obturator, and the outer wall of every master core conductor and center line core conductor is equipped with conductor double hyer insulation layer; It is characterized in that described some master core conductors and stranded the forming of some center line core conductor symmetric arrays; Described obturator outer wall wraps up tape for cables layer, cable shield and the coat layer of power cable from inside to outside successively;
Described tape for cables layer is fire-retardant gluing type glass strap; In tape for cables layer, be provided with the drainage thread of 7 × 0.25mm2;
Described cable shield is lapped shielding layer, and lapped shielding layer is compound copper-plastics band;
Described the coat layer of power cable is low-smoke zero-halogen flame-retardant termite-proof polyolefin jacket layer;
Described conductor double hyer insulation layer is primary insulation and outer layer insulation; Wherein, primary insulation is IXPE insulating barrier, and outer layer insulation is irradiated crosslinking low-smoke and halogen-free polyolefin insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210262356.3A CN102751033B (en) | 2012-07-27 | 2012-07-27 | Variable frequency cable for transformer station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210262356.3A CN102751033B (en) | 2012-07-27 | 2012-07-27 | Variable frequency cable for transformer station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102751033A CN102751033A (en) | 2012-10-24 |
| CN102751033B true CN102751033B (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210262356.3A Active CN102751033B (en) | 2012-07-27 | 2012-07-27 | Variable frequency cable for transformer station |
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| CN (1) | CN102751033B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105741939A (en) * | 2015-03-10 | 2016-07-06 | 蒋菊生 | Filling rope for optical cable, power cable, photoelectric composite cable or photoelectric comprehensive cable |
| CN105702350A (en) * | 2016-04-27 | 2016-06-22 | 丹阳正联知识产权运营管理有限公司 | Waterproof variable frequency cable with low electromagnetism and resistant to interference |
| CN105931709A (en) * | 2016-06-14 | 2016-09-07 | 广西网联电线电缆有限公司 | Variable frequency cable |
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2012
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| CN200979813Y (en) * | 2006-11-29 | 2007-11-21 | 天津金山电线电缆股份有限公司 | A frequency converter cable |
| CN101315819A (en) * | 2007-05-29 | 2008-12-03 | 上海摩恩电气有限公司 | Production method of large size mineral insulation fireproof cable |
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Also Published As
| Publication number | Publication date |
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| CN102751033A (en) | 2012-10-24 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG HUALING CABLE CO., LTD. Effective date: 20141202 Owner name: SHANDONG ELECTRIC POWER ENGINEERING CONSULTING INS Free format text: FORMER OWNER: SHANDONG HUALING CABLE CO., LTD. Effective date: 20141202 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Dongwei Inventor after: Sun Congcong Inventor after: Wang Zhaobo Inventor after: Zou Zhenyu Inventor after: Pan Maolong Inventor after: Li Yingjin Inventor after: Di Menggang Inventor after: Zhang Guangming Inventor after: Song Huaixu Inventor after: Ma Yue Inventor before: Wang Zhaobo Inventor before: Pan Maolong Inventor before: Di Menggang Inventor before: Song Huaixu Inventor before: Sun Congcong |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 250220 JINAN, SHANDONG PROVINCE TO: 250014 JINAN, SHANDONG PROVINCE Free format text: CORRECT: INVENTOR; FROM: WANG ZHAOBO PAN MAOLONG ZHAI MENGGANG SONG HUAIXU SUN CONGCONG TO: WANG DONGWEI WANG ZHAOBO ZOU ZHENYU PAN MAOLONG LI YINGJIN ZHAI MENGGANG ZHANG GUANGMING SONG HUAIXU MA YUE SUN CONGCONG |
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| TR01 | Transfer of patent right |
Effective date of registration: 20141202 Address after: 250014 Shandong Province, Lixia District of Ji'nan city Min Zi Qian Road No. 106 Patentee after: Shandong Electric Power Engineering Consulting Institute Co., Ltd. Patentee after: Shandong Hualing Cable Co., Ltd. Address before: Licheng District 250220 Shandong city of Ji'nan province through No. ten road ten Road No. 7 high-tech park in St. Patentee before: Shandong Hualing Cable Co., Ltd. |