Variable-frequency speed-regulation all-in-one machine for coal mine

Abstract

The invention provides a variable-frequency speed-regulation all-in-one machine for a coal mine, and belongs to the technical field of variable-frequency motors. The variable-frequency speed-regulation all-in-one machine for the coal mine comprises a shell, a motor, a frequency converter, a wire inlet reactor, a water cooling heat dissipation structure, an air cooling heat dissipation structure, atemperature sensor and an industrial personal computer, wherein the frequency converter is arranged at the top of the shell and electrically connected with the motor and the wire inlet reactor whichare arranged in the shell, the water cooling heat dissipation structure comprises a turn-back type water channel, a water tank and a water pump which are arranged outside the motor, the air cooling heat dissipation structure is a cooling fan fixedly arranged inside the shell, the temperature sensor is arranged outside the shell, and the industrial personal computer is connected with the water pump, the cooling fan, the temperature sensor and the frequency converter and used for controlling work the of the variable-frequency and speed-regulation all-in-one machine. The variable-frequency and speed-regulation all-in-one machine for the coal mine is good in insulation and heat dissipation performance, strong magnetic interference can be resisted, the reliability of equipment is improved, andthe service life of the equipment is prolonged.

Description

technical field [0001] The invention relates to the technical field of frequency conversion motors, in particular to a frequency conversion and speed regulation integrated machine for coal mines. Background technique [0002] In recent years, with the acceleration of the upgrading of coal mine machinery and equipment, in order to meet the requirements of coal mine safety production and coal mine energy conservation, and with the rapid development of automation control and power electronics technology, it has become more and more widely used in the coal mine industry. Application of frequency conversion speed regulating device. The current large-scale mining equipment mainly adopts the transmission mode of "high-voltage frequency converter + motor". The frequency converter is large in size, low in protection level, and the output cable from the frequency converter to the motor is long, which may interfere with other equipment along the line. And distributed capacitance, when...

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Problems solved by technology

Due to the large power loss of the inverter and the motor, after being integrated into the all-in-one machine, due to space constraints, the volume cannot be made too large, so all the heat is gathered in the airtight container, so the heat cannot be dissipated in time and effectively. The electronic components used in the inverter part of the machine, such as motor bearings, windings, and iron cores, cannot work at high temperatures for a long time. The main problem highlighted is how to solve the heat dissipation of the inverter, and its poor insulation and strong electromagnetic interference. It also has a great impact on the performance, reliability and service life of the all-in-one machine

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