WQS Series Submersible High-Head Sewage Pump

The WQS Series Deep-Water High-Head Submersible Sewage Pump is an advanced product derived from the development of submersible sewage pumps used in the Three Gorges Project on the Yangtze River. Its hydraulic component design and structural configuration break through conventional design methodologies of traditional submersible sewage pumps. This innovation fills the technical gap in high-head deep-diving sewage pumps and elevates China's pump industry hydraulic design standards to a new level.

Model Specification

• Deep-Water High-Head Design: Developed based on the Three Gorges Project, this pump series introduces a revolutionary hydraulic component structure, overcoming limitations of traditional submersible sewage pumps.
• High-Head Performance: Capable of operating under high-head conditions (up to 110 meters) and deep submersion (up to 100 meters).
• Anti-Clogging & Wear Resistance: Engineered to handle media containing abrasive solid particles (Φ25–Φ50 mm) without clogging.
• Full-Head Operation: Ensures safe and efficient performance across the entire flow-head curve without overload risks.
• High Reliability: Designed for extreme conditions, including large water level fluctuations, deep submersion, and corrosive environments.
• Automated Installation & Control: Supports automatic coupling systems and remote monitoring for simplified maintenance.

The WQS Series is specifically designed for:

• High-Head Sewage Discharge: Long-distance wastewater transportation in urban and industrial settings.
• Deep Submersion Environments: Safe operation under 100-meter water pressure.
• High-Turbidity Media: Handling sewage with high sediment or abrasive particle content.
• Critical Infrastructure: Suitable for major national projects requiring ultra-high reliability.
• Variable Water Levels: Adaptability to large water level fluctuations (e.g., riverside, reservoirs).

Maximum Medium Temperature: ≤40°C.

pH Range: 5–9.

Solid Particle Size: Φ25–Φ50 mm.

Maximum Submersion Depth: 100 meters.

Performance Range:

Flow Rate: 50–500 m³/h.

Head: 40–110 meters.

Power: ≤115 kW.

Voltage: 380V, 50Hz.

1、Motor:

• Special insulation design ensures normal operation even with minor water ingress.
• Optimized motor structure allows startup under partial submersion of hydraulic components.

2、Hydraulic Components:

• Advanced CFD (Computational Fluid Dynamics) and flow field diagnostic technology enhance efficiency (≥85%) and anti-clogging performance.
• Patented design for high-head, full-head operation, and wear resistance.

3、Sealing System:

• Multi-stage sealing solutions enable safe operation at 100-meter submersion depths.

4、Protection Mechanisms:

• Leak detectors in junction box cavity, motor cavity, and oil chamber.
• Dual temperature sensors in stator windings (primary + backup).
• Patented motor dehumidification system maintains stable insulation resistance.

The WQS Series features a coaxial motor-pump structure with compact design. It employs a fixed wet installation method using an automatic coupling system. Key advantages include:

• High-precision manufacturing ensures seamless installation and retrieval within 100-meter head conditions.
• Eliminates the need for personnel to enter water pits during maintenance.
• Installation Steps:

1、Mount specialized base on the sump bottom and connect to discharge piping.

2、Install support blocks on the pool top and connect to the base via guide rails.

3、Attach the pump to a dedicated bracket and slide it down the rails to the base outlet position.

4、Automatic coupling and sealing achieved via pump self-weight.