Power supply cable of hydraulic pump station
A technology for power supply cables and hydraulic pump stations, which is applied in the direction of insulated cables, power cables with shielding layers/conductive layers, cables, etc., which can solve the problems of poor electromagnetic compatibility performance of frequency conversion cables, achieve good electromagnetic compatibility performance, and improve electric field The effect of distribution and buffering mechanical stress
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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Embodiment Construction
[0017] The following are specific specific examples to illustrate the implementation of the present invention, 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 comprises three conductor cores 4 and three neutral lines 1, and the three conductor cores 4 and the three neutral lines 1 are 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 that wraps 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 it is wound in 46 layers; 4 layers of metal aluminum foil are added during the winding process, and the aluminum foils are distributed at equal intervals between the two wrapping ...
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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 [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 variable frequency speed regulation technology is an important development direction of modern electric power transmission technology, and its application field has entered a new climax accordingly. Applications. Some data show that the growth rate of my country's inverter market is more than 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 inverter and how to correctly select the power cable. [0004] Traditional frequency conversion cables mainly include cables, wrapping shielding layers, steel wire braided shielding...
Claims
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IPC IPC(8): H01B9/02H01B7/282H01B7/17
Inventor 陈安民
Owner SICHUAN DINGRUI HYDRAULIC EQUIP MFR