CN102751033A - Variable frequency cable for transformer station - Google Patents
Variable frequency cable for transformer station Download PDFInfo
- Publication number
- CN102751033A CN102751033A CN2012102623563A CN201210262356A CN102751033A CN 102751033 A CN102751033 A CN 102751033A CN 2012102623563 A CN2012102623563 A CN 2012102623563A CN 201210262356 A CN201210262356 A CN 201210262356A CN 102751033 A CN102751033 A CN 102751033A
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- Prior art keywords
- cable
- layer
- transformer station
- conductor
- core
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- 239000004020 conductor Substances 0.000 claims abstract description 44
- 238000009413 insulation Methods 0.000 claims description 27
- 239000003063 flame retardant Substances 0.000 claims description 15
- 239000000779 smoke Substances 0.000 claims description 10
- 229920000098 polyolefin Polymers 0.000 claims description 8
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 6
- 229910052736 halogen Inorganic materials 0.000 claims description 6
- 150000002367 halogens Chemical class 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 238000003491 array Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 241000256602 Isoptera Species 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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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 and use frequency-changing cable.
Background technology
Mostly the frequency-changing cable of transformer station's use at present is conventional quad, and its antijamming capability and weatherability are poor, and the life-span is short, in case break down, replacement cost is high, and the safe operation of transformer station is brought very big risk.
Chinese patent ZL01204437.7 discloses a kind of metallic shield monitoring type flexible cable; It is applied to mobile substation, down-hole electric power connection line; It comprises power line core conductor, rubber sheath; This power line core conductor outside sets gradually conductor shield, rubber insulation layer, insulation screen, and the pilot wire core conductor that two its outsides have insulating barrier is set in this rubber sheath.But the cable rubber restrictive coating bad mechanical property that this patent is announced is wear-resisting, be prone to 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 the obturator; The outer wall of said obturator wraps up double-deck heterogeneous screen and cable duplex sheath layer, and the outer wall at every conductor also is provided with the conductor double insulating layer simultaneously.But the cable that this patent is announced does not have drainage thread, and electric charge accumulation causing electric field is concentrated, and the cable anti-electromagnetic interference capability is poor, and the 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 high-performance transducer of anti-the environmental form and has used flexible cable; It comprises cable core, insulating barrier; Said cable core has several master cores, by-pass core and fire-retardant filler to form, and said master core is evenly distributed on the cable core center, and said by-pass core is centered around around the said master core; Said master core is electric current main transmission line road; The conductor of said master core is enclosed with composite insulation layer and metal screen layer outward successively, and said by-pass core is the neutral line, is made up of conductor and the insulating barrier that is wrapped on the conductor; Be filled with the fire-retardant filler of non-hygroscopic between described master core and the by-pass core, said cable core is established inner covering, composite shielding layer and external sheath layer outward successively.But the cable that this patent is announced adopts the individual layer insulation, and insulation property are not high; No drainage thread, shield effectiveness is poor, and the transmission signals unsteadiness can not ensure effective transmission of cable, can not be applicable to termite-proof environment.
Summary of the invention
The object of the invention is exactly for overcoming the deficiency of above-mentioned prior art, provide a kind of transformer station to use frequency-changing cable, and this cable has environmental protection, and is fire-retardant, termite-proof, and antijamming capability is strong, superior electrical property, long service life.
For realizing above-mentioned purpose, the present invention adopts following proposal:
A kind of transformer station uses frequency-changing cable; It comprises cable core; Cable core comprises and is arranged at some master core conductors and the some center line core conductors that meets the 5th type of soft copper conductor requirement among the GB3956 in the obturator, and the outer wall of every master core conductor and center line core conductor is equipped with conductor double hyer insulation layer; Said some master core conductors and stranded the forming of some center line core conductor symmetric arrays; Said obturator outer wall wraps up tape for cables layer, cable shield and cable cover(ing) layer from inside to outside successively.
Said tape for cables layer is fire-retardant gluing type glass strap, makes fire resistance more reliable; Be provided with 7 * 0.25mm in the tape for cables layer
2Drainage thread.
Said cable shield is a lapped shielding layer, and lapped shielding layer is a compound copper-plastics band.
Said cable cover(ing) layer is the termite-proof polyolefin jacket layer of low-smoke non-halogen flame-retardant.
Said conductor double hyer insulation layer is primary insulation and outer layer insulation; Wherein, primary insulation is the IXPE insulating barrier, and outer layer insulation is the 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 the IXPE Insulation Material; Improved the electrical property of product; Reduce dielectric loss in use, made transmission signals more stable, reliable, thereby ensured effective transmission of cable; Skin is an irradiated crosslinking low-smoke and halogen-free polyolefin insulation material, and it possesses excellent electric performance, high-low temperature resistant, useful life, mechanical and physical performance.Cable cover(ing) is the termite-proof polyolefin jacket material of low-smoke non-halogen flame-retardant, and protective cover material has that anti-cracking performance is excellent, thermal contraction is little, is prone to processing, characteristics such as taste is 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.The tape for cables layer adds 7 * 0.25mm
2Drainage thread.The effect of drainage thread makes the cable metal screen continuous, prevents phenomenon separated in the 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 promptly has the shielding properties of copper strips, contains again and moulds the band mechanical stress, makes screen firm more, 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.The cable material therefor all is low-smoke non-halogen flame-retardant ep-type materials, in fire-retardant, guaranteed cable the feature of environmental protection, improved cable useful life.Double-layer coextrusion technology and irradiation crosslinking technological are adopted in insulation, make 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 under termite-proof environment for a long time.
Description of drawings
Fig. 1 is a 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. cable cover(ing) layer.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Among Fig. 1, cable core comprises and is arranged at three master core conductors and the three center line core conductors that meet the 5th type of soft copper conductor requirement among the GB3956 in the low-smoke non-halogen flame-retardant obturator 4, three master core conductors and three stranded forming of center line core conductor symmetric arrays; The outer wall of every master core conductor and center line core conductor is wrapping inner layer insulation 2 and outer layer insulation 3 successively all, and wherein primary insulation 2 is the IXPE insulating barrier; Outer layer insulation 3 is the 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 cable cover(ing) layer 8 from inside to outside successively.
Tape for cables layer 6 is fire-retardant gluing type glass strap, makes fire resistance more reliable; Be provided with 7 * 0.25mm in the tape for cables layer 6
2Drainage thread.Cable shield is a lapped shielding layer 7, and lapped shielding layer 7 is a compound copper-plastics band.Cable cover(ing) layer 8 is the termite-proof polyolefin jacket layer of low-smoke non-halogen flame-retardant.
Though the above-mentioned accompanying drawing specific embodiments of the invention that combines is described; But be not restriction to protection range of the present 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 need not pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (5)
1. a transformer station uses frequency-changing cable, it is characterized in that it comprises cable core, and cable core comprises some master core conductors and the some center line core conductors that is arranged in the 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 said some master core conductors and stranded the forming of some center line core conductor symmetric arrays; Said obturator outer wall wraps up tape for cables layer, cable shield and cable cover(ing) layer from inside to outside successively.
2. transformer station as claimed in claim 1 frequency-changing cable is characterized in that, said tape for cables layer is fire-retardant gluing type glass strap; Be provided with 7 * 0.25mm in the tape for cables layer
2Drainage thread.
3. transformer station as claimed in claim 1 frequency-changing cable is characterized in that, said cable shield is a lapped shielding layer, and lapped shielding layer is a compound copper-plastics band.
4. transformer station as claimed in claim 1 frequency-changing cable is characterized in that, said cable cover(ing) layer is the termite-proof polyolefin jacket layer of low-smoke non-halogen flame-retardant.
5. transformer station as claimed in claim 1 frequency-changing cable is characterized in that, said conductor double hyer insulation layer is primary insulation and outer layer insulation; Wherein, primary insulation is the IXPE insulating barrier, and outer layer insulation is the 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 true CN102751033A (en) | 2012-10-24 |
| CN102751033B CN102751033B (en) | 2014-10-08 |
Family
ID=47031134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210262356.3A Active CN102751033B (en) | 2012-07-27 | 2012-07-27 | Variable frequency cable for transformer station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102751033B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700942A (en) * | 2015-03-10 | 2015-06-10 | 蒋菊生 | Special-shaped filling rope for optical cable or electric cable or photoelectric composite cable or photoelectric composite 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 |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556529A (en) * | 2003-12-31 | 2004-12-22 | 宝胜科技创新股份有限公司 | Manufacturing method of 35 KW environmental protection type A kind fire proof power cable for underground railway circuit |
| 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 |
| CN201345241Y (en) * | 2009-01-14 | 2009-11-11 | 安徽长风电缆集团有限公司 | Highly flame-retardant and explosion proof control cable for coal mines |
| CN201946332U (en) * | 2010-12-08 | 2011-08-24 | 安徽春辉仪表线缆集团有限公司 | Variable frequency cable for ships |
| CN201994131U (en) * | 2011-03-28 | 2011-09-28 | 安徽龙庵电缆集团有限公司 | Environment-resistant high-performance flexible cable for frequency converter |
| CN202013767U (en) * | 2011-04-23 | 2011-10-19 | 安徽凯博尔特种电缆集团有限公司 | Vessel-use silicone rubber insulating medium-voltage variable frequency flexible cable |
| CN202134273U (en) * | 2011-06-29 | 2012-02-01 | 安徽绿洲电缆有限公司 | A flame retardant and high temperature resistant intrinsically safe computer cable |
| CN102364601A (en) * | 2011-11-09 | 2012-02-29 | 江苏新远程电缆股份有限公司 | Anti-interference low-voltage cable for balance of plant (BoP) of nuclear power station |
| CN202258528U (en) * | 2011-09-29 | 2012-05-30 | 江苏上上电缆集团有限公司 | Direct current power cable |
| CN202258450U (en) * | 2011-10-11 | 2012-05-30 | 郑州电缆有限公司 | Highly shielded frequency conversion cable |
| CN202711835U (en) * | 2012-07-27 | 2013-01-30 | 山东华凌电缆有限公司 | Variable frequency cable for transformer station |
-
2012
- 2012-07-27 CN CN201210262356.3A patent/CN102751033B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556529A (en) * | 2003-12-31 | 2004-12-22 | 宝胜科技创新股份有限公司 | Manufacturing method of 35 KW environmental protection type A kind fire proof power cable for underground railway circuit |
| 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 |
| CN201345241Y (en) * | 2009-01-14 | 2009-11-11 | 安徽长风电缆集团有限公司 | Highly flame-retardant and explosion proof control cable for coal mines |
| CN201946332U (en) * | 2010-12-08 | 2011-08-24 | 安徽春辉仪表线缆集团有限公司 | Variable frequency cable for ships |
| CN201994131U (en) * | 2011-03-28 | 2011-09-28 | 安徽龙庵电缆集团有限公司 | Environment-resistant high-performance flexible cable for frequency converter |
| CN202013767U (en) * | 2011-04-23 | 2011-10-19 | 安徽凯博尔特种电缆集团有限公司 | Vessel-use silicone rubber insulating medium-voltage variable frequency flexible cable |
| CN202134273U (en) * | 2011-06-29 | 2012-02-01 | 安徽绿洲电缆有限公司 | A flame retardant and high temperature resistant intrinsically safe computer cable |
| CN202258528U (en) * | 2011-09-29 | 2012-05-30 | 江苏上上电缆集团有限公司 | Direct current power cable |
| CN202258450U (en) * | 2011-10-11 | 2012-05-30 | 郑州电缆有限公司 | Highly shielded frequency conversion cable |
| CN102364601A (en) * | 2011-11-09 | 2012-02-29 | 江苏新远程电缆股份有限公司 | Anti-interference low-voltage cable for balance of plant (BoP) of nuclear power station |
| CN202711835U (en) * | 2012-07-27 | 2013-01-30 | 山东华凌电缆有限公司 | Variable frequency cable for transformer station |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700942A (en) * | 2015-03-10 | 2015-06-10 | 蒋菊生 | Special-shaped filling rope for optical cable or electric cable or photoelectric composite cable or photoelectric composite cable |
| CN105702349A (en) * | 2015-03-10 | 2016-06-22 | 蒋菊生 | Irregularly-shaped filling rope for optical cable, cable, photoelectric composite cable or photoelectric comprehensive cable |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102751033B (en) | 2014-10-08 |
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| 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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| C53 | Correction of patent of 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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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. |