The relay circuit is changed to the inverter operation. If it is still running at the power frequency, the butterfly valve is used to adjust the air volume. Only a small amount of electric energy is saved by increasing the power factor of the motor. The effect is not obvious. The damper is operated at 45°. The annual electricity saving is only 16644kW/h, which is of little significance. The butterfly valve is fully open (90°), and the air volume is adjusted by adjusting the frequency of the Fuji inverter. After repeated adjustment and comparison, the butterfly valve is fully opened, and the frequency of the inverter is 40Hz, which can meet the air volume of the original relay circuit during power frequency operation. The pre-crystallization bed has a boiling effect. It can save 96,360kW/h every year. ABB inverter is used instead of Fuji inverter to test. As a result, ABB inverter has better energy saving effect than Fuji inverter. The same 40Hz operation can reduce 5.5kW, mainly ABB inverter can improve motor power factor and improve motor. s efficiency.
According to the pre-crystallization bed rotary valve feeding or not, different frequency value operation is performed. Through repeated adjustments, the motor runs at 40 Hz during feeding, and the pre-crystallization bed can maintain the same boiling state without agglomeration. When the rotary valve is just stopped, the pre-crystallization bed slice layer is still thicker. In order to prevent agglomeration, a time relay is added. When the material is stopped, the time relay is delayed by 3 to 5 minutes, and the slice layer is thinned. After that, the ABB inverter is automatically controlled to fall to 36 Hz by the delay contact signal; once re-feeding, the inverter immediately goes to 40 Hz. This kind of rotary valve is opened and stopped, and supplemented by the time delay of the time relay, the inverter is automatically controlled to operate at two frequencies, and the fan air volume is reasonably adjusted. According to the statistics, the motor is running at 36 Hz every day for 1/3 time and 40 Hz at 2/3 time. The total annual power saving can reach 1.6×105 kW/h. The ABB inverter frequency modulation is used instead of the original valve adjustment mode. The opening and closing of the inverter controls the automatic alternate operation of the two frequencies of the inverter; according to the requirements of different slicing, the operating frequency can be directly set on the inverter; the decrease of the motor speed further prolongs the bearing life, and the fan noise is significantly reduced. An effective energy saving method.
Water pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers.
Qualified Pump Accessories are very important for the whole equipment; these are the key points and determined the quality of pump assembly.
We manufacture & sell pump accessories more than 25,000 set /year to all over the world, according to the requirement of our customers.
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Materials: Ductile iron, Grey iron, Aluminum
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With the long terms of experience in the pump industry, we could supply the pump housings or help to design the housings according to your requirements.
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