The frequency converter market in the chemical industry mainly comes from equipment matching and renovation projects, each accounting for about 40%, and the rest comes from parts and replacement.
In the chemical industry, frequency converters are mainly used in fans, pumps and mechanical speed control equipment. There are many branches in the chemical industry, and the production process varies greatly. The power range of the inverter used is very wide, and inverter products from less than 1KW to several thousand kilowatts are used.
The use of frequency converters in the chemical industry is very different, and various grades of products can find corresponding users in this industry. Therefore, the chemical industry is the most complicated industry of frequency converter brands. Almost all brands have markets in the chemical industry.
In the chemical industry, the transportation of materials is inseparable from the pump. In most cases, the flow (pressure) needs to be adjusted. In the past, the flow rate was adjusted by a throttle valve (constant pressure pump) or a diverter valve (constant volume pump). , Throttling loss or shunt loss are redundant power consumption, such as using a frequency converter to directly adjust the pressure and flow of the pump, you can save a lot of electrical energy.
With the continuous development of industry, the application of fans is becoming more and more widespread, especially in the chemical industry. However, there is a general problem of excessive air volume in the design of the fan. Throttle is generally used when the air volume needs to be adjusted, that is, the damper adjustment method, and this is unnecessary loss. After using the variable frequency speed regulation, it can be easily adjusted according to actual needs. Unnecessary losses are removed, and the power factor is improved. The overall power saving rate is above 30.
Speed â€‹â€‹governing machinery
Machines requiring speed regulation such as: extruders, material feed regulation, conveyor belts, etc. basically use slip adjustment motors, three-phase rectifier motors or DC motors for speed regulation. The speed regulation performance of the speed regulation motor is not good and the speed is stable Poor performance, high failure rate and low efficiency. However, DC motors and commutator motors have complex structures, high failure rates, and high maintenance costs. Sparks are generated during their operation, which is extremely unsafe. The above motors have poor speed regulation stability. If the above motors are replaced with asynchronous motors and variable frequency speed regulators, they can greatly improve efficiency, save electricity, reduce maintenance, safety, reliability, and short return on investment. advantageous.
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