Intelligent fluid pump group

Abstract

The invention provides an intelligent fluid pump group. The intelligent fluid pump group comprises an H steel frame, and at least two intelligent variable-frequency pumps are installed at the bottom of the H steel frame; water inlets of the intelligent variable-frequency pumps are connected with suction fluid directors, and the suction fluid directors are connected with a first water collection pipe installed at the top end of the H steel frame through first vertical pipes; and water outlets of the intelligent variable-frequency pumps are connected with connecting pipes, the connecting pipes are connected with multifunctional valves, and the multifunctional valves are connected with a second water collection pipe installed at the top end of the H steel frame through second vertical pipes.According to the intelligent fluid pump group, noise and vibration are low in the running process, the occupied area and space are small, the intelligent fluid pump group does not need to depend on anexternal sensor, and therefore the pumping efficiency is improved to the maximum limit; and the concentricity of the intelligent variable-frequency pumps is high, pump shafts and motor shafts are positioned by adopting machining connecting steel frames and connected through rigid couplers, impellers achieve dynamic balance design, and flow channels achieve optimization design.

Description

technical field [0001] The invention relates to the technical fields of a central air-conditioning chilled water and hot water system, a water supply and drainage system, and a fire-fighting system, in particular to an intelligent fluid pump set. Background technique [0002] Central air-conditioning systems, water supply and drainage systems, and fire-fighting systems consume a large proportion of the energy consumption of water pumps. Therefore, while meeting the transmission and distribution requirements, they must also meet the requirements for environmental protection and energy conservation. The central air-conditioning machine room includes refrigeration hosts, chilled water pumps, and cooling water pumps. The energy consumption of water pumps accounts for about 15%-20% of the energy consumption of central air-conditioning. Therefore, the frequency conversion operation of the water pump system according to changes in the outdoor environment and indoor load is significa...

AI Technical Summary

Problems solved by technology

[0003] However, there are many problems in the traditional energy-saving technology of horizontal water pump + frequency converter control. The flexible coupling is used between the motor shaft and the pump shaft of the horizontal water pump, which is not easy to ensure the coaxiality, which will cause the noise and vibration of the pump to be large. At the same time, it is easy to cause damage to the bearing / mechanical seal; the floor area and space are large, and the bearing and mechanical seal are set, the maintenance downtime is long and the cost is high

[0004] The frequency converter of the water pump needs to make a separate control cabinet and connect it with pull wires, which will affect the efficiency, harmonics and electromagnetic interference, input and output functions; the pressure sensor is placed in the machine room / terminal, etc., and is controlled by constant head or ratio, which is inconvenient for installation and debugging.

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