Beijing Green Chuang Environmental Protection Technology Co., Ltd. is the first choice for frequency conversion water supply equipment. The company focuses on water treatment and integrates production, sales and after-sales to provide convenience to our customers. The company takes customers first and quality first as its philosophy and truly puts customers' needs first. For the purpose of satisfaction and benefit to customers, all our company's equipment is guaranteed for one year and lifetime maintenance from the date of acceptance, and we provide free technical consultation. Address: South Courtyard, Guandimiao Road, Jiugong, Daxing District, Beijing, telephone, fax mobile phone, contact person: Ms. He
1. Characteristics and analysis of frequency conversion speed regulation
User water consumption is generally dynamic, so the water supply is insufficient Or excess water supply occurs from time to time. The imbalance between water use and water supply is mainly reflected in the pressure of water supply. That is, if there is more water and less water supply, the pressure will be low. If there is less water and more water supply, the pressure will be high. Keeping the water supply pressure constant can maintain a balance between water supply and water use, that is, more water is supplied when there is more water, and less water is supplied when there is less water, thus improving the quality of water supply.
The constant pressure water supply system is very important to users. When supplying water for production and living, if the pressure of the tap water supply is insufficient or the water is cut off for a short time for some reason, it may affect the quality of life, and in serious cases, the safety of survival. For example, in the event of a fire, if the water supply pressure is insufficient or there is no water supply, the fire cannot be put out quickly, which may cause Significant economic losses and casualties. Therefore, the use of Zhengyi constant pressure water supply system in water-use areas can produce greater economic and social benefits.
With the development of electric power technology, frequency conversion speed regulation technology is becoming more and more perfect. The intelligent water supply control system with frequency conversion speed regulation as the core has replaced the previous water supply equipment such as high-level water tanks and pressure tanks. It starts smoothly and the starting current can be limited to Within the rated current, the impact on the power grid during startup is avoided. Since the average speed of the pump is reduced, the service life of pumps, valves, etc. can be extended and the water hammer effect during startup and shutdown can be eliminated. Its stable and safe operating performance, simple and convenient operation, and complete and thoughtful functions will enable water supply to save water, electricity, and manpower, and ultimately achieve high-efficiency operation.
2. Frequency conversion application method of constant pressure water supply
Usually, multiple common pumps are installed in the same water supply system. When the water supply is large, many pumps are fully opened. When the water supply is small, one or two pumps are opened. . When using variable frequency speed regulation for constant pressure water supply, two methods are used. One is that all water pumps are equipped with a frequency converter; the other is that each water pump is equipped with a frequency converter. The latter method automatically adjusts the output frequency of the inverter through calculation according to the pressure feedback signal, changes the motor speed, and finally achieves the purpose of constant pressure in the pipe network. It is a closed loop, which is simpler, but the cost is high. The former method has low cost and no worse performance than the latter method, but the control program is more complex and is the future development direction
Frequency conversion water supply equipment