Air compressors are used in a wide range of applications, including industrial and agricultural, national defense, science and technology, and civil applications. It is one of the most commonly used equipment in manufacturing, and its cheap and suitable compressed air energy is highly appreciated. It can use an electric motor to compress the gas in the compression chamber and make the compressed gas have a certain pressure. The conventional air compressor has frequent failures, low degree of automation, and large fluctuations in the supply pressure, especially when the current impact is very large at startup. Affect the operation safety of power grids and other electrical equipment. When the gas consumption changes frequently, the gas supply pressure cannot be stabilized very well. The idle current during unloading is about 30%~50%, and this part of the current does not do useful work. It is the idle loss of the machine at the rated speed and is noisy during operation. Manual adjustment of gas supply, not only slow response, but also artificially increase resistance, loss of electrical energy, does not meet the requirements of energy saving. According to statistics, compressed air accounts for 1% to 35% of total energy consumption in industrial production. The annual electricity consumption of industrial compressors in China accounts for more than 6% of the country's total electricity consumption. Therefore, it is imperative to carry out energy-saving renovation of air compressors. 2 Air compressor energy-saving transformation according to PLC not only has the control function of the traditional relay control system, but also has the function expansion input and output module, especially can expand some intelligent control modules, constitute different control systems, analog input and output control and modern control The method is integrated into the body to realize intelligent control, closed-loop control and multi-control functions. The frequency converter is applied with frequency conversion technology and microelectronic technology, and the power control device of the alternating current motor is controlled by changing the working power rate of the motor. By adjusting the voltage and frequency of the output power supply, it provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. With the continuous development and maturity of the frequency conversion speed regulation technology, the frequency converter has been gradually promoted and applied, especially in the constant voltage regulation of variable torque loads such as fans and pumps. According to the knowledge of the motor, the speed of the asynchronous motor is: where: f is the motor input frequency; s is the motor slip ratio; p is the motor pole pair. Compress 2 Li Liangren. Frequency control technology and application. Machine Tool Electric, 2007.
VMADE-3D series 3D Laser Marking Machine adopts imported core components, it is equipped with high-speed, high precision 3D galvo scanner, and our self-developed 3D specified software and control system. These high-quality configurations ensure the system can make ultra-fine processing on any curved surface parts.
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