XBC Diesel Engine Deep Well Long-Shaft Fire Pump — Right-Angle Gearbox Transmission & Multi-Stage Deep Well Fire Water Extraction
The xbc diesel engine deep well long-shaft fire pump combines a diesel engine with a right-angle gearbox and multi-stage centrifugal impeller assembly to deliver reliable fire water extraction from deep wells, reservoirs, and other water sources — independent of electrical grid power. This article covers verified performance parameters, drive architecture, installation requirements, and operational procedures per GB 6245-2006.
Core Performance Parameters
| Parameter | Value |
|---|---|
| Flow Rate (Q) | 30–220 L/s |
| Head (H) | 42–200 m |
| Power (N) | 30–1000 kW |
| Speed (n) | 1500 / 1800 / 3000 r/min |
| Rated Pressure | 1.0 MPa (model designation basis) |
| Rated Flow (model basis) | 160 L/s |
| Design Standard | GB 6245-2006 (Fire Pumps) |
| Model Designation | XBC-[Pressure]-[Flow]-GJ-CD |
| Medium | Clean water or chemically similar liquid, no solid particles |
Drive Architecture: Diesel + Right-Angle Gearbox
The pump set uses a diesel engine as the prime mover, transmitting power through an H-type right-angle gearbox to a concentric drive shaft inside the discharge pipe. This configuration allows the diesel engine and gearbox to sit above the wellhead while the multi-stage impeller assembly operates deep below the water surface.
- Right-angle gearbox — Converts horizontal diesel engine output to vertical shaft rotation, maintaining coaxial alignment with the discharge pipe and impeller shaft.
- Multi-stage centrifugal impellers — Series of impellers and guide shells stacked in the submerged pump section, generating cumulative head to lift water from depths up to 200 m.
- Concentric drive shaft — Runs inside the discharge pipe, transmitting torque from the gearbox to the impeller stack with minimal radial space requirement.
- Three-speed capability — Available at 1500, 1800, and 3000 r/min to match different flow-head requirements and diesel engine characteristics.
Structural Components
- Pump section (submerged) — Multiple centrifugal impellers, guide shells, and discharge column pipe.
- Drive shaft assembly — Vertical transmission shaft running through the discharge pipe.
- Pump seat & gearbox — H-type right-angle gearbox mounted above the wellhead, converting horizontal to vertical drive.
- Diesel engine assembly — Mounted adjacent to the gearbox on the base frame, with radiator, exhaust, and fuel system.
- Control cabinet — Manual, automatic, and forced operation modes with fire signal integration.
Applications
- Industrial fire protection — Factories, warehouses, and petrochemical facilities requiring independent fire water supply from on-site deep wells.
- Construction sites — Temporary or permanent fire protection for building projects before electrical grid connection is available.
- High-rise buildings — Fire hydrant and sprinkler systems fed from underground water storage or deep well sources.
- Municipal water supply — Dual-use domestic/production water supply from deep wells in areas without reliable electrical infrastructure.
- Marine and dock facilities — Fire protection at ports, wharves, and offshore platforms where grid power is unavailable or unreliable.
Installation Guidelines
- Foundation — Install on a level, vibration-free reinforced concrete base. Anchor with foundation bolts or expansion bolts through the base plate holes. Provide drainage channels and sumps around the equipment.
- Indoor ventilation — Direct diesel radiator exhaust air outdoors via ductwork. Maintain adequate clearance from obstacles for cooling airflow when outdoor ducting is impractical.
- Exhaust system — Use flexible joints between diesel exhaust manifold and exhaust pipe to prevent misalignment stress. Route exhaust outdoors with downward-angled outlet. Minimize bends and length to preserve engine output.
- Fuel supply — User-supplied or factory-supplied day tank with 4–6 hour capacity at rated load. Tank height ≥ diesel transfer pump inlet (typically 1.5 m elevation). Use reinforced plastic hose (φ10×1) or equivalent for fuel line.
- Discharge piping — Provide independent pipe supports — do not support pipe weight on the pump body. Install flexible joints at pump outlet to absorb vibration. Mount pressure gauge at ≥ 2 pipe diameters from elbows and valves.
Operation Modes
- Manual mode — Operator starts/stops diesel via control panel buttons. Suitable for testing and commissioning.
- Automatic mode — Fire signal triggers automatic diesel startup; signal removal triggers automatic shutdown. Normal operational mode for standby fire service.
- Forced mode — Bypass controller for emergency operation when automatic controls fail. Direct start/stop via panel buttons and emergency stop.
Pre-Startup Checklist
- Verify diesel engine oil level between static-full and running-full marks. Use 15W/CF-40 grade oil. Never mix brands or grades.
- Confirm radiator filled with coolant and all water valves in correct position.
- Check fuel level and bleed air from fuel system.
- Use 0# diesel above 5°C; switch to -10# or lower grade in cold weather.
Compliance
- Design and manufacture per GB 6245-2006 (Fire Pumps Chinese National Standard).
- Diesel engine meets relevant emissions and safety regulations.
- Factory acceptance testing includes hydraulic performance verification, gearbox alignment check, and diesel run-in procedure.
For complete dimensional drawings, gearbox ratio specifications, and diesel engine selection tables, refer to the XBC Diesel Engine Deep Well Long-Shaft Fire Pump Installation & Operation Manual (PDF/EN available on request).