VFD controller

Constant pressure frequency conversion water supply High-quality intelligent computer control. Specially developed independently, with diversified functions, capable of providing cutting-edge precision control, and has reached the world's leading level. Constant pressure frequency conversion water supply to maintain constant pressure The equipment detects the outlet pressure through the pressure sensor in real time, compares the detected value with the set value, and determines the number of motors and suction pumps input and the output frequency of the inverter (reacted as the speed of the motor and pump) to achieve the purpose of constant pressure water supply. Constant pressure frequency conversion water supply When the power supply line is out of power, the system uses 747D and bypass to achieve continuous water outage, that is, the system automatically switches to municipal tap water supply during power outage. Constant pressure frequency conversion water supply highly automated The system can realize automatic control, with manual/automatic switching, timing rotation of main and auxiliary pumps, pressure adjustment, constant voltage, high and low voltage protection, phase loss protection, leakage protection, overload protection, overheat protection, water shortage protection, no water parking, Instantaneous trip protection and other functions. In addition, the human-machine interface can be configured according to user needs, visualizing remote adjustment, detection and maintenance. Constant pressure frequency conversion water supply The overflow parts are made of food-grade materials such as stainless steel, in line with international water-related regulations. The wading valve and pipe fittings are made of SUS304 food-grade high-quality stainless steel to ensure the sanitation of water. Constant pressure frequency conversion water supply to save operating costs The system guarantees that the constant pressure of the pipeline is based on the changes in the amount of water used to adjust the number of sets and the running speed. When there is a large amount of water, the input power is large, and when the amount of water is small, the input power is small. When the water consumption is small (such as at night), the system is supplied by a low-power pump with frequency conversion and constant pressure. The system runs directly at the point of high efficiency. Therefore, the operating cost is greatly reduced. Can save energy by more than 60%. The system runs automatically without the need for special staff.

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Rugao You Inport & Export Co. LTD was established in 2004, which was among the earliest trading companies strongly supported by Ministry of Foreign Trade and Economic Cooperation.Through the past ten years, our company has already established a deep strategic cooperation relation with domestic suppliers who specilizes in oil drilling equipments, and become the top level supplier of some well known large or medium sized SOEs such as CNPC and Sinopec. The products made by our company are exported to Europe, America, the Middle East, North Africa and Southeast Asia and other regions, because of which, we enjoy widespread praise among customers at home and abroad. Our mainly products: drilling rig parts, drilling equipment, solid control system, wellhead equipment, fishing tools, cementing tools. All the productions is within the standard of API and authorized by ISO9001:2000.

Our company mainly deals in hardware tools, combined tools, electric tools, special tools for petroleum, metal processing machinery and petroleum drilling equipment. Diagonal Cutting Plier，Oil Drill Pipes，Drilling Tools，The company provides various centrifugal pumps, chemical pumps, screw pumps, booster pumps, variable frequency constant pressure pumps, hydrochloric acid pumps, testing pumps, etc. Diesel Engine Etc.Our companyoperates hardware tools and has established long-term and stable cooperative relations with many retailers.