Power supply cable provided with symmetrical cable cores and applied to hydraulic pump station
A hydraulic pump station and power supply cable technology, which is applied in the direction of insulated cables, power cables with shielding layers/conductive layers, cables, etc., can solve the problems of poor electromagnetic compatibility of frequency conversion cables, etc., and achieve good electromagnetic compatibility and uniform electric field , Improve the effect of electric field distribution
Inactive Publication Date: 2015-01-14
SICHUAN DINGRUI HYDRAULIC EQUIP MFR
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Problems solved by technology
The frequency conversion cable adopts a 3+3 structure cable, the cores are symmetrical, and each core is equipped with a shielding layer, which makes the electromagnetic compatibility performance of the frequency conversion cable poor. In addition, the shielding performance and resistance of the frequency conversion cable Water performance needs to be further improved
Method used
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[0017] The implementation of the present invention is described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.
[0018] A power supply cable for a hydraulic pump station with symmetrical cores, comprising three conductor cores 4 and three neutral wires 1, the three conductor cores 4 and three neutral wires 1 are sequentially arranged at intervals along the circumferential direction of the cable. The conductor core 4 and the neutral wire 1 are provided with a wrapping tape layer 2 to wrap them inside. The wrapping tape layer 2 is made of polypropylene laminated paper as an insulating film material. The polypropylene layer The thickness of the pressed paper is about 0.12mm, and 46 layers are wound; 4 layers of metal aluminum foil are added during the winding process, and the aluminum foil is distributed at equal intervals between th...
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The invention discloses a power supply cable provided with symmetrical cable cores and applied to a hydraulic pump station and relates to cables in the field of the electrical technology. The power supply cable provided with the symmetrical cable cores and applied to the hydraulic pump station is good in electromagnetic compatibility and waterproof effect. According to the technical scheme, the power supply cable provided with the symmetrical cable cores and applied to the hydraulic pump station comprises three conductor wire cores and three neutral wires, wherein the three conductor wire cores and the three neutral wires are arranged alternately in sequence, the conductor wire cores and the neutral wires are covered with a warping tape layer, an inner semiconductive shielding layer, an insulating layer, an outer semiconductive shielding layer, a waterproof tape layer and a sheath layer from inside to outside in sequence. The power supply cable is suitable for the hydraulic pump station.
Description
technical field [0001] The invention relates to the field of electrical technology, in particular to a cable, in particular to a power supply cable for a hydraulic pump station. Background technique [0002] AC frequency conversion speed regulation technology is an important development direction of modern power transmission technology, and its application field has entered a new climax accordingly. At present, it has been widely used in the fields of maglev trains, high-speed railways, oil recovery speed regulation, ultrasonic oil flooding, etc. Applications. Some data show that the growth rate of my country's inverter market is above 10% every year. [0003] Although frequency conversion technology has a wide range of applications, it is still a new technology for many engineers and technicians. At the same time, this situation also brings new issues such as the structural design of the power cable between the motor and the frequency converter and how to correctly se...
Claims
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IPC IPC(8): H01B9/02H01B7/282H01B7/18H01B7/17
CPCY02A30/14
Inventor 陈安民
Owner SICHUAN DINGRUI HYDRAULIC EQUIP MFR