CN2805029Y - Cable used for high-power frequency conversion driving system - Google Patents
Cable used for high-power frequency conversion driving system Download PDFInfo
- Publication number
- CN2805029Y CN2805029Y CN 200520071574 CN200520071574U CN2805029Y CN 2805029 Y CN2805029 Y CN 2805029Y CN 200520071574 CN200520071574 CN 200520071574 CN 200520071574 U CN200520071574 U CN 200520071574U CN 2805029 Y CN2805029 Y CN 2805029Y
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- frequency conversion
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Abstract
The utility model relates to a cable used for high-power frequency-conversion driving system, which belongs to the technical field of the cable. The utility model is provided with a master wire core which is squeezed and packed with a conductor shielding layer, an insulating layer and an insulating shielding layer and lapped with a metal shielding layer with copper belts on a conductor and a grounding wire core provided with an insulating layer on the conductor. An isolation layer with a PBT polyester belt with excellent water-stopping performance is lapped on a cable core cabled by isolating and symmetrically distributing the master wire core and the grounding wire core. A non-halogen polyolefin inner protecting layer is arranged on the isolation layer with a PBT polyester belt, and a squeezing and packing metal shielding layer is arranged between an outer sheath and the isolation layer with a PBT polyester belt. The utility model has the characteristics of reasonable, simple, compact, round and normal structure, easy production manufacture, low cost, good service performance, high power utilization safety, electromagnetic interference prevention, low dielectric loss, low capacity, large service power, electrothermal aging resistance, long life time, good bending property, etc. The utility model can be used as cables for wiring connection for various frequency converters and speed control devices with adjustable frequency.
Description
Technical field
The utility model relates to the structure of cable, belongs to the cable technology field.
Background technology
At present, China's production of energy and consumption are only second to the U.S., rank the second in the world, but gross national product comes about the 8th, and wherein one of most important reason is exactly that the energy consumption per unit of output value is too big.The energy of China's industrial consumption surpasses 2/3rds of energy total amount, and state-owned enterprise's energy uses and accounts for major part.Because the backwardness of production technology, the general equipment that all adopts constant-speed drive causes a large amount of energy wastes every year.In this type of load, 80% left and right sides capacity is dragged by large and middle size motor.Therefore, studying big-and-middle capacity electrical machinery variable speed energy saving technology, to reduce the per unit area yield energy consumption for China industry significant.In addition, in the modern means of communication such as the reconstruction of traditional industries such as steel rolling, papermaking, cement manufacturing, mine hoisting, Steamship propeller and bullet train, also need to use the large-size machine governing system, to improve systematic function and production efficiency.To studies show that state-owned enterprise's energy uses, if existing out-of-date equipment of China and technology are replaced with the state-of-the-art technology in the world today immediately, energy efficiency is brought up to new level, and China possesses the technology potentiality of saving 40～50% energy consumptions on existing total energy consumption.
Ac variable speed technology is the important development direction of Modern Electrical Drive technology, and over past ten years, there is very big development in the China that is applied in of converter technique, and has obtained good effect.We can say that converter technique is accepted by most of users.
As realizing AC-to DC, again by the frequency converter private cable of direct current to interchange, compare with power transmission cable with electric power system, require it to possess low transmission impedance, low insulation loss, high anti-electromagnetic interference, high electromagnetic coupled balance and environmental-protecting performance, for the electric power system power transmission cable, can possess above-mentioned one, two and belong to difficultly, but high-newization of the multifunction of frequency converter and electronic technology proposed above-mentioned multinomial high performance requirement to the frequency converter private cable.
The existing common power cable that is made of conductor, insulation, sheath etc. can not adapt to various frequency converters and use, obstacle applying of converter technique.At present, China uses only about 6% of frequency control operation at the alternating current motor of usefulness, and industrially developed country has reached 60%～70%; And along with going deep into that China reforms and opens up to the outside world, external various frequency converters pour in the domestic market, since its tangible performance advantage, the strong vigor that has excited the domestic market.And matching used with it private cable, import still places one's entire reliance upon.
The utility model content
The purpose of this utility model is for adapting to the needs of ac variable speed technology development, developing a kind of anti-electromagnetic interference, low-dielectric loss, low electric capacity, use big, the anti-thermal-electrical aging of power, long high-power frequency conversion drive system cable of life-span.
The purpose of this utility model is to realize like this, high-power frequency conversion drive system cable, comprise conductor, insulation, sheath, it is characterized in that cable is provided with the ground connection core that is provided with insulating barrier on master core that extrudes conductor shield, insulating barrier, insulation screen and wrapped copper strips metal screen layer on the conductor and conductor, on the cable core of master core and ground connection core isolation symmetrical distribution stranding, be surrounded with the PBT polyester belt isolation layer of good block-water performance, on separator, be provided with the halogen-free polyolefin sheath, between oversheath and separator, be provided with and extrude metal screen layer.
Described insulating barrier is high electrical performance, low-k, low-loss XLPE material.Master core and ground connection core are three master cores and three ground connection cores.Conductor shield is the special-purpose semiconductive shieldin material of middle and high voltage cable.Extruding metal screen layer is all excellent wrinkle copper pipe of bending property, shield effectiveness, compression strength.
The utility model simple, compact, rounding rational in infrastructure is manufactured easily, and cost is low.Serviceability is good, the electrical safety height.Have anti-electromagnetic interference, low-dielectric loss, low electric capacity, use characteristics such as big, the anti-thermal-electrical aging of power, long service life.
Adopt the structural design of " three add three " of three master cores and three ground connection core isolation symmetrical distribution strandings, every phase line all adopts the independent grounding mode, guarantees the reliability of ground connection, eliminates the noise that leakage current causes, improve the balance of three-phase alternating current, can realize the electrostatic screen of cable simultaneously.
Conductor shield on the conductor of master core, insulating barrier, insulation screen adopt three-layer co-extrudedly, once finish extruding, and can improve the combination property of insulator, guarantee the voltage drop and the interphase interference superiority of cable.
The shielding of employing wrinkle copper pipe formula, armour design have changed existing power cable and have shielded and the layering setting of adorning armour between oversheath and sheath, and the unification of existing shielding and armouring descends construction of cable compactness, cost.Make full use of copper material good electrical conductivity and good plasticity; improve the compression strength and the bending property of cable; seamless, jointless tubular type shield layer; make the protection electromagnetic field become the tubular closed loop to distribute; change-over time when having prolonged the multiplication of power supply frequency conversion between the transducer of motor; improve the shield effectiveness of cable, both can prevent the interference of outer bound pair cable, also can prevent the interference of cable other electronic equipment.
Separator adopts the PBT polyester belt with good heat-resisting non-hygroscopic and tensile strength wrapped, guarantees the proof voltage impact of screen and core.Can stand to reflect the huge crest value of impulse voltage (2～3X) that causes.
Outer jacket adopts green safety Halogen material, has oil resistant, waterproof, anti-environment and soaks damage, guarantees the stability of cable in various adverse circumstances.
The structural design of this cable, make cable realize high pressure resistant, anti-high frequency, anti-pulse voltage, anti-corona and can effectively suppress good electric property such as High-frequency Interference, possess excellent physical and mechanical properties such as low smoke and zero halogen, fire-retardant, oil resistant, moisture-proof, wear-resisting, withstand voltage, high-low temperature resistant simultaneously, satisfy the cable that existing frequency converter and variable-frequency control technique develop required usefulness.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Among the figure: 1 conductor, 2 insulating barriers, 3 fillings, 4 conductor shields, 5 insulation screens, 6 separators, 7 sheaths, 8 shield layers, 9 oversheaths, 10 metal screen layers.
Embodiment
Employing meets the copper conductor 1 of middle and high voltage cable correlation standard, extrudes conductor shield 4, insulating barrier 2, insulation screen 5 on conductor.Adopt three-layer co-extruded technology, once finish extruding of conductor shield 4, insulating barrier 2, insulation screen 5, can improve the combination property of insulator, guarantee the voltage drop and the interphase interference superiority of cable.Wrapped copper strips metal screen layer 10 constitutes master core on insulation screen 5.Only extruded insulation layer 2 constitutes the ground connection core on conductor 1.Master core and ground connection core are with " three add three " structure stranding, and every phase line all adopts the independent grounding mode, and master core and ground connection core adopt isolated symmetrical distribution, adopt insulation polypropylene (PP) to tear nettle and fill 3.On the cable core of master core and ground connection core stranding, be surrounded with the PBT polyester belt isolation layer 6 of good block-water performance.Halogen-free polyolefin sheath 7 is set on separator 6.On sheath 7, extrude the shield layer 8 of all excellent wrinkle copper pipe of bending property, shield effectiveness, compression strength as cable.The polyolefine material outer jacket 9 of low-smoke non-halogen flame-retardant is set on shield layer 8.
Claims (5)
1, a kind of high-power frequency conversion drive system cable, comprise conductor, insulation, sheath, it is characterized in that cable is provided with the ground connection core that is provided with insulating barrier on master core that extrudes conductor shield, insulating barrier, insulation screen and wrapped copper strips metal screen layer on the conductor and conductor, on the cable core of master core and ground connection core isolation symmetrical distribution stranding, be surrounded with the PBT polyester belt isolation layer of good block-water performance, on separator, be provided with the halogen-free polyolefin sheath, between oversheath and separator, be provided with metal screen layer.
2, high-power frequency conversion drive system cable according to claim 1 is characterized in that described insulating barrier is high electrical performance, low-k, low-loss XLPE material.
3, high-power frequency conversion drive system cable according to claim 1 is characterized in that described master core and ground connection core are three master cores and three ground connection cores of symmetrical expression " three add three " structure.
4, high-power frequency conversion drive system cable according to claim 1 is characterized in that described conductor shield is the special-purpose semiconductive shieldin material of middle and high voltage cable.
5, high-power frequency conversion drive system cable according to claim 1 is characterized in that described metal screen layer is all excellent argon arc welding wrinkle copper pipe of bending property, shield effectiveness, compression strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520071574 CN2805029Y (en) | 2005-05-13 | 2005-05-13 | Cable used for high-power frequency conversion driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520071574 CN2805029Y (en) | 2005-05-13 | 2005-05-13 | Cable used for high-power frequency conversion driving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2805029Y true CN2805029Y (en) | 2006-08-09 |
Family
ID=36910314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520071574 Expired - Fee Related CN2805029Y (en) | 2005-05-13 | 2005-05-13 | Cable used for high-power frequency conversion driving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2805029Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901643A (en) * | 2010-08-04 | 2010-12-01 | 中天科技海缆有限公司 | Bunched frequency conversion submarine cable and manufacturing method thereof |
| CN101647073B (en) * | 2007-02-23 | 2011-12-14 | 普雷斯曼电缆和系统有限公司 | Power cable with high torsional resistance |
| CN102842369A (en) * | 2011-06-24 | 2012-12-26 | 上海市高桥电缆厂有限公司 | Safety electric wire |
| CN103903718A (en) * | 2014-03-03 | 2014-07-02 | 安徽万博电缆材料有限公司 | Low smoke zero halogen control cable for vessel |
| CN104867594A (en) * | 2014-02-24 | 2015-08-26 | 安徽新华电缆(集团)有限公司 | Aluminum alloy conductor and shielding cable |
-
2005
- 2005-05-13 CN CN 200520071574 patent/CN2805029Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101647073B (en) * | 2007-02-23 | 2011-12-14 | 普雷斯曼电缆和系统有限公司 | Power cable with high torsional resistance |
| CN101901643A (en) * | 2010-08-04 | 2010-12-01 | 中天科技海缆有限公司 | Bunched frequency conversion submarine cable and manufacturing method thereof |
| CN101901643B (en) * | 2010-08-04 | 2012-06-13 | 中天科技海缆有限公司 | Bunched frequency conversion submarine cable and manufacturing method thereof |
| CN102842369A (en) * | 2011-06-24 | 2012-12-26 | 上海市高桥电缆厂有限公司 | Safety electric wire |
| CN104867594A (en) * | 2014-02-24 | 2015-08-26 | 安徽新华电缆(集团)有限公司 | Aluminum alloy conductor and shielding cable |
| CN103903718A (en) * | 2014-03-03 | 2014-07-02 | 安徽万博电缆材料有限公司 | Low smoke zero halogen control cable for vessel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060809 Termination date: 20100513 |