Mining seven-core cable automatic-control temperature-rising dehumidification and moisture absorption device

Abstract

The invention discloses a mining seven-core cable automatic-control temperature-rising dehumidification and moisture absorption device. The mining seven-core cable automatic-control temperature-risingdehumidification and moisture absorption device comprises a 10kV alternate-current power supply, a 10kV up-current transformer, a converter, a 50V nine-pulse direct-current output device, a 2000V direct-current output device and a sealed dehumidification moisture absorption and drying box, the 10KV alternate-current power supply is connected with the 10KV up-current transformer and the converterin sequence, the converter is connected with the 50V nine-pulse direct-current output device and the 2000V direct-current output device meanwhile, and the 50V nine-pulse direct-current output deviceand the 2000V direct-current output device are connected with a wire core of a mining seven-core cable. The structure design is reasonable. By energizing the seven-core cable of a coal mining machine,the wire is heated under the action of the direct current to achieve the temperature-rising effect. The temperature is reasonably controlled, so that mining seven-core cable automatic-control temperature-rising dehumidification and moisture absorption device is conducive to moisture vaporization, does not damage the cable insulation, and is suitable for temperature-rising dehumidification of theseven-core cable of the coal mining machine with a length of 1000 meters.

Description

technical field [0001] The invention belongs to the technical field of mine cable dehumidification, and in particular relates to a mining seven-core cable self-controlled temperature rise dehumidification and moisture absorption device. Background technique [0002] The mining operation environment is complex and harsh, and safety is the most important requirement. The reliability and safety requirements of supporting equipment are high, and the corresponding high requirements are also put forward for the cables used in the equipment. On the premise that one cable meets multiple functions, it has a series of functions such as flame retardant, anti-collision, anti-rolling, and anti-stretch. The mining seven-core cable integrates wires and cables with different functions, making the wiring of mining equipment safer and more convenient. In the process of storing, transporting, laying and making accessories for mining seven-core cables, it is necessary to strengthen the work of...

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Problems solved by technology

[0004] Before the discharge of the damp cable is formed, the fault phenomenon is relatively hidden and difficult to troubleshoot. It is operated in a low insulation state for a long time, which is easy to cause local overheating or large-area insulation aging and damage, which is difficult to repair, which greatly reduces its service life. When dealing with similar faults, it often consumes huge manpower and material resources, which greatly affects the efficient and orderly production organization, resulting in an increase in production costs

[0005] In the prior art, the AC welding machine and the AC current booster are used to heat and dehumidify the cable. The AC current boost is affected by too much inductive reactance, and the effective length is limited (about 50 meters), which is not suitable for mine cables.

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