Hubei Houhu Farm Water Supply Plant Split-Type Double-Suction Pump Retrofit ｜ Hubei · Qianjiang

Application scenario: Hubei state-owned Houhu Farm Water Plant (public ownership, commissioned in 1990, daily supply 32,000 m³), intake from Tianguan River surface water, serving residents and farmland irrigation. Jianghan Plain flood season has high sediment load; high humidity causes corrosion; peak loads from residential morning/evening and agricultural irrigation; limited operation staff requiring fast maintenance and short shutdown time. Original S-type pumps had low efficiency, valve throttling caused over 25% energy loss, impellers wore and scaled within 3–5 months, bolts corroded and seized, constant-speed operation lacked intelligent control, maintenance required over 4 hours shutdown.


Solution content: M&W ENERGY SAVING XS split-type double-suction pumps: XS450-660 intake pump (3200m³/h / 26m / ≥87%, 4 units with 3 standby, 6kV VFD linked to water level), XS350-630 delivery pumps (1600–2400m³/h / 32–58m, 4 units with 2 standby, multi-pump VFD control), XS250-570 irrigation booster pumps (2 units, low-frequency stabilizing during irrigation season). 304 stainless wetted parts, ZG20Mn pump body epoxy zinc-rich + humid-resistant coating, all 304 stainless fasteners, silicon carbide mechanical seal, 220V electric tracing. CFD impeller efficiency improves by 10–13 percentage points, quick-disassembly reduces maintenance time by 70%, water hammer absorber included. Integrated into Qianjiang rural water supervision platform.


Project results: comprehensive energy saving rate 23%–27%, annual electricity savings over 850,000 RMB; overhaul cycle extended from 3–5 months to over 12 months, maintenance cost reduced by 65%; 24h VFD constant pressure ensures terminal water pressure stability, leakage reduced. Benchmark rural farm water plant in Jianghan Plain, replicable to similar plants in Jingzhou, Xiantao, and Tianmen.

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