Production Technology of Frequency Conversion Cable Used in Coal Mine

A frequency conversion cable and production process technology, which is used in cable/conductor manufacturing, circuits, electrical components, etc., can solve the problems of lack of safety performance of power connection cables, and ensure the quality of power supply and transmission, excellent flame retardant performance, and tear resistance. good effect of cracking and flame retardant performance

Inactive Publication Date: 2019-01-08
FAR EAST CABLE +2
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Problems solved by technology

[0004] The purpose of the present invention is to provide a production of frequency conversion cables for coal mines to ensure the safety and reliability of underground operations in coal mines, mainly aiming at the technical problem of the lack of safety performance of power supply connection cables for existing coal mine shearer frequency conversion devices and similar equipment craft

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  • Production Technology of Frequency Conversion Cable Used in Coal Mine

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Embodiment 1

[0030] The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the specific embodiments of the present invention are enumerated below.

[0031] See figure 1 , The frequency conversion cable for coal mines includes a power core 1, a control core 2, a filling core 3, an inner sheath 4, a shielding layer 5 and an outer sheath 6. There are three power cores 1 and three control cores 2; the three power cores 1 and the three control cores 2 are arranged at intervals, and are tangent to the two adjacent cores, forming a saddle-shaped space in the middle; filling core 3 It is saddle-shaped and is set in the saddle-shaped space. The saddle-shaped filler core 3 stabilizes th...

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Abstract

The invention discloses a production process of a frequency conversion cable for a coal mine, comprising the following steps of: determining a cable structure; 2, respectively produce a power core, acontrol core and a filling core, and then forming that cable into a cable core; 3, squeeze that inner sheath out of the cable core; 4, manufacture a shielding layer by an inn sheath; 5, squeeze that outer sheath out of the shield layer. The cable structure of the invention is reasonable in design and stable in arrangement, and the produced cable has excellent anti-interference characteristics, voltage impulse resistance, wear resistance, tear resistance and flame retardancy, and the cable is flexible and easy to bend, and is particularly suitable for use in coal mine roadways with bad conditions.

Description

technical field [0001] The invention relates to a cable, in particular to a production process of a variable frequency cable for coal mines. Background technique [0002] As a large category of wire and cable products for electrical equipment, cables for coal mines have extremely high requirements for product structure design, material application and flame retardant performance. This product effectively solves the interference of pulse voltage and electromagnetic waves in frequency conversion speed control systems. , It is essential in the use of downhole frequency conversion system. [0003] At present, there is no dedicated cable for the frequency conversion device of coal mining machines. Most coal mines use XLPE insulated frequency conversion cables. The shielding is wrapped with copper tape, and the shielding effect is not good. , It is not easy to bend, and the broken core often occurs, which seriously affects the safety and economy of downhole operations. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/22H01B13/26
CPCH01B13/22H01B13/26
Inventor 刘丽赵春丽陈兴武李国强安瑞利
Owner FAR EAST CABLE
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