CN104282388A - Power supply cable of hydraulic pump station - Google Patents
Power supply cable of hydraulic pump station Download PDFInfo
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- CN104282388A CN104282388A CN201410429426.9A CN201410429426A CN104282388A CN 104282388 A CN104282388 A CN 104282388A CN 201410429426 A CN201410429426 A CN 201410429426A CN 104282388 A CN104282388 A CN 104282388A
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Abstract
The invention discloses a power supply cable of a hydraulic pump station and relates to the technical field of electrical technologies. The power supply cable of the hydraulic pump station is a variable frequency cable and is good in electronic compatibility and water blocking effect. According to the technical scheme, the power supply cable comprises three conductor cores 4 and three neutral lines, the three conductor cores 4 and the three neutral lines are arranged alternately in sequence, the three conductor cores 4 and the three neutral lines are sequentially wrapped in a wrapping band layer 2, an inner semi-conductive shielding layer, an insulating layer, an outer semi-conductive shielding layer, a water-blocking band layer and a sheath layer, the outer surface of the wrapping band layer, the outer surface of the inner semi-conductive shielding layer, the outer surface of the insulating layer, the outer surface of the outer semi-conductive shielding layer, the outer surface of the water-blocking band layer and the outer surface of the sheath layer are each provided with a plurality of cutting lines which are distributed at equal intervals in the length direction of the cable, the thickness of each cutting line is two fifths that of the corresponding layer. The power supply cable is suitable for the hydraulic pump station.
Description
Technical field
The present invention relates to technical field of electricity, be specifically related to a kind of cable, particularly relate to a kind of service cable for hydraulic power unit.
Background technology
Ac variable speed technology is the important development direction of Modern Electrical Drive technology, its application also correspondingly enters a new climax, gets a lot of applications at present in the field such as speed governing, the ultrasonic wave displacement of reservoir oil of magnetic suspension train, high-speed railway, petroleum recovering.Data is had to show the growth rate of China's frequency converter markets every year all more than 10%.
Although being of wide application of converter technique, a new technology is still belonged to for converter technique many engineers and technicians.Meanwhile, also bring the structural design of power cable between motor and frequency converter in the case and how correctly to select the problem that power cable etc. is new.
Traditional frequency-changing cable mainly comprises cable, lapped shielding layer, braided steel wire screen and silicone rubber jacket.The utility model patent being 201320526720.2 as application number discloses a kind of frequency-changing cable, and this frequency-changing cable comprises the cable, successively wrapped lapping layer, screen and the restrictive coating outside cable that are made up of three large cores and three little cores; Described large core comprises the large insulating barrier extruded by the stranded large conductor that forms of many copper wires and large conductor outside surfaces; Little core comprises the little insulating barrier extruded by the stranded little conductor that forms of many copper wires and little conductor outside surfaces; Described screen comprises and is coated on proof copper-wire braided layer outside lapping layer and copper strip shielding layer successively; Described restrictive coating is coated with aluminium alloy armored sheath.This frequency-changing cable adopts 3+3 structure cable, and core is shape symmetrically, and each core is all furnished with screen outward, makes the Electro Magnetic Compatibility of frequency conversion cable poor, and in addition, the shielding properties of frequency conversion cable and block-water performance all need to be improved further.
Summary of the invention
The object of the present invention is to provide the hydraulic power unit service cable that a kind of Electro Magnetic Compatibility is good, block-water effect is good.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of hydraulic power unit service cable, comprise 3 conductor thread cores, it is characterized in that: also comprise 3 neutral lines, 3 conductor thread cores and 3 neutral lines are sequentially arranged at interval, conductor thread core and the neutral line are provided with wrapped belt outward from inside to outside successively, semiconductive internal shield, insulating barrier, semiconductive outer shielding layer, water blocking tape layer and restrictive coating, wrapped belt, semiconductive internal shield, insulating barrier, semiconductive outer shielding layer, the outer surface of water blocking tape layer and restrictive coating there are some line of weakness uniformly at intervals along the length direction of cable, the thickness of described line of weakness is 2/5ths of the thickness of respective layer.
Further, described wrapped belt is formed by the coiling of polypropylene layer platen, is equidistantly provided with 4 layers of metal aluminum foil in wrapped belt.
Further, described water blocking tape layer comprises nonwoven layer or terylene layer of cloth, and nonwoven layer or terylene layer of cloth upper strata are folded and be provided with matrix structure layer, material structure layer.
Compared with prior art, beneficial effect of the present invention is:
1. the present invention adopts the 3+3 symmetrical structure that 3 conductor thread cores and 3 neutral lines are formed, and arranges common screen outside conductor thread core and the neutral line, makes the Electro Magnetic Compatibility of the cable of 3+3 line of symmetry core ribbon shielding construction better, and can reduce its electromagnetic radiation; In addition, outside core, set gradually wrapped belt, semiconductive internal shield, insulating barrier, semiconductive outer shielding layer, water blocking tape layer, effectively can improve shielding properties and the block-water performance of hydraulic power unit service cable; The outer surface of every layer is equipped with line of weakness, and this line of weakness is 2/5ths of respective layer thickness, makes the stripping of cable convenient, quick.
2. in the present invention, wrapped belt is formed by the coiling of polypropylene layer platen, is equidistantly provided with 4 layers of metal aluminum foil in wrapped belt, therefore improves cable in the Electric Field Distribution of axis with radial direction and the anti-voltage ageing performance of insulating barrier, improves the puncture voltage of insulating barrier.
3. in the present invention, water blocking tape layer comprises nonwoven layer or terylene layer of cloth, nonwoven layer or terylene layer of cloth upper strata are folded and are provided with matrix structure layer, material structure layer, this product is made not only to play semi-conductive screen effect, uniform electric field, and the object that can also play buffer mechanism stress and block water.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the profile of Fig. 1;
Wherein, Reference numeral is: 1-neutral line, 2-wrapped belt, 3-semiconductive internal shield, 4-conductor thread core, 5-insulating barrier, 6-semiconductive outer shielding layer, 7-water blocking tape layer, 8-restrictive coating, 9-line of weakness.
Embodiment
Be below, by particular specific embodiment, embodiments of the present invention are described, those skilled in the art can understand other advantage of the present invention and effect easily by content disclosed in the present specification.
A kind of hydraulic power unit service cable, comprises 3 conductor thread cores 4 and 3 neutral lines, 1,3 conductor thread cores 4 and 3 neutral lines 1 and sequentially arranges at interval along the circumferencial direction of cable.Be provided with outside conductor thread core 4 and the neutral line 1 and be wrapped in interior wrapped belt 2, described wrapped belt 2 is formed as insulating film material coiling by polypropylene layer platen, and this polypropylene layer platen thickness is about 0.12mm, coiling 46 layers; In winding process, add 4 layers of metal aluminum foil, aluminium foil equidistantly distributes between wrapped belt 2, and wherein the length of aluminium foil is once from inside to outside: 960mm, 862mm, 782mm and 715mm.Inner at wrapped belt 2, be filled with filler in wrapped belt 2, space between conductor thread core 4 and the neutral line 1 three, described filler is the one in semiconducting rubber bar, the coated cotton of semiconducting rubber bar or the rope made of hemp, the coated polypropylene elastic cable of semiconducting rubber bar.Be provided with outside wrapped belt 2 and wrapped belt 2 is wrapped in interior semiconductive internal shield 3, be provided with outside semiconductive internal shield 3 and be wrapped in interior insulating barrier 5, be provided with outside insulating barrier 5 and be wrapped in interior semiconductive outer shielding layer 6.Be provided with outside semiconductive outer shielding layer 6 and be wrapped in interior water blocking tape layer 7, described water blocking tape layer 7 carries out the even coating of semi-conductor electricity glue to nonwoven fabrics or woven dacron by tie dyeing mode, forms matrix structure layer; Preparation rubber, thermoplastic elastomer (TPE) are main body, add other auxiliary agents (as carbon black, material water-proof material etc.), form material structure layer, matrix structure layer and material structure layer are carried out calendering and form waterstop, waterstop is wrapped at semiconductive outer shielding layer 6 outer formation water blocking tape layer 7.Be provided with outside water blocking tape layer 7 and be coated on interior restrictive coating 8.
The outer surface of belting layer, semiconductive internal shield 3, insulating barrier 5, semiconductive outer shielding layer 6, water blocking tape layer 7 and restrictive coating 8 has some line of weakness 9 uniformly at intervals along the length direction of cable, and the thickness of described line of weakness 9 is 2/5ths of the thickness of respective layer.The cross section of described line of weakness 9 is equilateral triangle.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any those skilled in the art all without prejudice under spirit of the present invention and category, can carry out modifying to above-described embodiment and change.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim described later.
Claims (3)
1. a hydraulic power unit service cable, comprise 3 conductor thread cores (4), it is characterized in that: also comprise 3 neutral lines (1), 3 conductor thread cores (4) and 3 neutral lines (1) are sequentially arranged at interval, conductor thread core (4) and the neutral line (1) are provided with wrapped belt (2) outward from inside to outside successively, semiconductive internal shield (3), insulating barrier (5), semiconductive outer shielding layer (6), water blocking tape layer (7) and restrictive coating (8), wrapped belt (2), semiconductive internal shield (3), insulating barrier (5), semiconductive outer shielding layer (6), the outer surface of water blocking tape layer (7) and restrictive coating (8) there are some line of weakness (9) uniformly at intervals along the length direction of cable, the thickness of described line of weakness (9) is 2/5ths of the thickness of respective layer.
2. hydraulic power unit service cable as claimed in claim 1, is characterized in that: described wrapped belt (2) is formed by the coiling of polypropylene layer platen, is equidistantly provided with 4 layers of metal aluminum foil in wrapped belt (2).
3. hydraulic power unit service cable as claimed in claim 1, is characterized in that: described water blocking tape layer (7) comprises nonwoven layer or terylene layer of cloth, and nonwoven layer or terylene layer of cloth upper strata are folded and be provided with matrix structure layer, material structure layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410429426.9A CN104282388A (en) | 2014-08-28 | 2014-08-28 | Power supply cable of hydraulic pump station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410429426.9A CN104282388A (en) | 2014-08-28 | 2014-08-28 | Power supply cable of hydraulic pump station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104282388A true CN104282388A (en) | 2015-01-14 |
Family
ID=52257194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410429426.9A Pending CN104282388A (en) | 2014-08-28 | 2014-08-28 | Power supply cable of hydraulic pump station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104282388A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040038180A (en) * | 2002-10-31 | 2004-05-08 | 한국전력공사 | Waterproof underground power cable applications |
| CN201210417Y (en) * | 2008-04-18 | 2009-03-18 | 江苏中煤电缆集团有限公司 | Safe flexible frequency variable cable |
| CN201622866U (en) * | 2010-03-08 | 2010-11-03 | 扬州中大电缆有限公司 | Variable frequency cable |
| CN102855999A (en) * | 2012-09-03 | 2013-01-02 | 昆山市奋发绝缘材料有限公司 | Water-blocking tape for electricity cable |
-
2014
- 2014-08-28 CN CN201410429426.9A patent/CN104282388A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040038180A (en) * | 2002-10-31 | 2004-05-08 | 한국전력공사 | Waterproof underground power cable applications |
| CN201210417Y (en) * | 2008-04-18 | 2009-03-18 | 江苏中煤电缆集团有限公司 | Safe flexible frequency variable cable |
| CN201622866U (en) * | 2010-03-08 | 2010-11-03 | 扬州中大电缆有限公司 | Variable frequency cable |
| CN102855999A (en) * | 2012-09-03 | 2013-01-02 | 昆山市奋发绝缘材料有限公司 | Water-blocking tape for electricity cable |
Non-Patent Citations (1)
| Title |
|---|
| 杨鑫 等: "35kV超导电缆终端电流引线的绕包型绝缘设计", 《高电压技术》 * |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150114 |