TQG Constant Pressure Frequency Conversion Water Supply System

Working Principle

The variable frequency water supply system maintains constant pipeline pressure by adjusting pump speed. 

When the detected pressure at the outlet drops below the preset activation threshold, the system automatically modulates pump speed to stabilize output pressure.  

Operational Logic:  

1. Multi-Pump Coordination

- If pressure remains below the setpoint at full speed (50Hz), the system sequentially activates Pump #2 and Pump #3.  

- As water demand decreases and pressure rises, pump speeds gradually reduce.  

- When speeds reach the minimum threshold, pumps shut down in reverse order (#3 → #2 → #1).  

Key Technical Advantages:  

1. Precision Pressure Stabilization  

- Microprocessor-controlled closed-loop system  

- Responds to pressure fluctuations within 0.5 seconds  

- Maintains accuracy within ±5% of setpoint  

2. Comprehensive Protection & User-Friendly Operation  

- Industrial-grade VFD (Imported) with built-in safeguards:  

✓ Under/over voltage protection  

✓ Overcurrent/overload protection  

✓ Short-circuit/overheat protection  

- AI-assisted control panel enables intuitive operation by non-technical personnel  

3. Fail-Safe Water Supply Capabilities

- Emergency backup mode ensures uninterrupted supply during faults  

- Dual-VFD configuration for redundancy  

- Municipal network integration with automatic switching  

- Firefighting mode: Instant transition to high-pressure/high-flow output  

Performance Highlights:

- Dual-purpose operation: Seamlessly handles both domestic and firefighting demands  

- Adaptive logic: Intelligent pump sequencing maximizes equipment lifespan  

- Zero-intervention maintenance: Self-diagnostic protocols minimize downtime  

Product Structure

System Composition：

The TQG system primarily consists of:  

- Pump unit(s) (multi-stage centrifugal type)  

- Hydropneumatic accumulator (diaphragm-type pressure vessel)  

- Pressure transducer(4-20mA output)  

- Frequency conversion control cabinet(with PID algorithm)  

This integrated system maintains user-defined parameters with ±0.01MPa precision.  

System Configuration Modes：

1. Municipal Network-Parallel Operation

- Operating Principle:  

 - Automatically shuts down all pumps when municipal supply meets pressure demand  

 - Activates when municipal pressure is insufficient (auto-cut-in at preset threshold)  

 - Pressure-boosting function: Compensates for demand peaks while preventing backflow  

2. Hydropneumatic Accumulator Functions  

- Primary roles:  

 a) Standby pressure maintenance (during pump idle)  

 b) Compensates for:  

    - Minor water demand (<5% of rated flow)  

    - Pipeline leakage losses  

 c) System protection:  

    - Water hammer suppression (per AWWA C511)  

    - Pressure pulsation damping  

Technical Highlights：

- Seamless transition between municipal/pump supply  

- Zero-interruption during mode switching  

- Self-diagnostic leakage compensation algorithm  

Model selection instructions

FAQs

Q1: What are the key features of the XBC-SOW Diesel Double Suction Fire Pump? 

A1: The XBC-SOW offers high reliability, low noise, easy maintenance, and customization options.

Q2: How does this industrial fire pump handle high flow and head requirements? 

A2: The comprehensive performance curve ensures the pump meets demanding high flow and head needs.

Q3: Can I customize the double suction fire pump to suit my specific application? 

A3: Yes, we offer customization options to tailor the pump to your unique requirements.

Q4: Is the XBC-SOW suitable for high-rise building fire protection systems? 

A4: Absolutely. This pump is ideal for high-rise building fire protection applications.

Q5: How long is the warranty period for the XBC-SOW Diesel Double Suction Fire Pump? 

A5: We provide a two-year warranty for your peace of mind and long-term reliability.

Q6: What kind of after-sales service do you offer for this high-pressure pump? 

A6: Our dedicated after-sales service ensures your pump runs smoothly throughout its lifetime.

Q7: Can this double suction pump be used in oil and chemical plant firefighting? 

A7: Yes, the XBC-SOW is well-suited for oil and chemical plant firefighting needs.

Q8: Is the XBC-SOW a reliable choice for power facility fire emergency response? 

A8: Definitely. This pump is designed to provide reliable performance during power facility emergencies.