Magnetic Performance in the Municipal Industry

In the municipal industry, engineers regularly troubleshoot a variety of different pumps including centrifugal, water, sewage, and slurry. If this equipment fails, maintenance crews spend extra time, money, and resources to get the equipment back up and running. In the following municipal applications, these various pumps were enhanced with the addition of water-cooled ASDs provided by MagnaDrive.

At the Anshan Water Utility Plant, a pump station contained components that caused lots of vibration. The parameters for the water surface needed to be monitored by the main control room. The manually controlled valve required a lot of labor and the accuracy didn’t meet the requirements that wasted power.

MagnaDrive installed an ASD12 (45 kW, 2,980 r/min) in 2013. This upgrade immediately helped the plant to meet production requirements. Vibration was reduced by 60 percent and maintenance work was reduced.

A water supply pump at the Daqing Dong Feng Plant contained a manually adjusted valve that was high labor intensive and wasted energy. The upgrade of an ASD26 (185, kW, 980 r/min) in 2013 automatically performed the constant voltage control that met the production requirements. An energy savings of 30 percent was achieved and maintenance work was greatly reduced.

At the Guiyang White Cloud Plant, five water pump units (375 kW) and one smaller unit (250 kW) were in operation. The water outlet main pipe was operated in parallel. A MagnaDrive ASD28 (375 kW, 1,480 r/min) was installed in 2015 to control the pump speed based on the amount of water flow. This saved 25 percent energy and reduced system damage by minimizing the starting/stopping of the pumps.

A water supply pump at the Angang Real Estate Heating Pump Station contained a manually adjusted valve that was high labor intensive, wasted energy and provided low accuracy. The upgrade in 2014 to an ASD28 (380 kW, 980 r/min) helped to automatically control the voltage, saving 30 percent in energy and saving 150,000 yuan in every heating cycle. Maintenance fees and work were reduced.

MagnaDrive ASDs are available in sizes ranging from 5 to 4,000 horsepower and speeds up to 3,600 rpm. Lower maintenance and operating costs are a result of transferring torque from motors to driven equipment across an air gap without shaft-to-shaft physical connection. This “disconnected connection” provides reduced vibration that increases bearing and seal life.

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