Product Overview
The QHYB-CDL Variable Frequency Constant Pressure Water Supply System is an advanced, towerless water supply unit composed of a pump unit, control system, and pressure stabilization device. The system automatically adjusts the pump speed to maintain a constant pressure, ensuring efficient and energy-saving water supply. The system uses CDLF stainless steel multistage centrifugal pumps for high reliability and efficiency. This device can be configured for either air pressure or variable frequency, depending on the application, and is widely used in domestic, fire-fighting, industrial, and sprinkler water supply systems.
Model Designation
Key Features
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High Efficiency and Energy Saving: The system adjusts the pump speed automatically, saving up to 20% energy compared to traditional systems.
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Constant Pressure Supply: The system provides a stable water supply with adjustable accuracy (≤0.02 MPa).
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Low Noise and Low Impact: The pump operates quietly with minimal impact during both startup and operation.
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Automatic Switching: The system automatically switches between the main pump and auxiliary pump for continuous, reliable operation.
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Compact Design: The system’s compact design makes installation simple and saves space.
Engineering Overview
The QHYB-CDL Variable Frequency Constant Pressure Water Supply System is designed to meet the needs of various industries and residential buildings. The system combines variable frequency technology and air pressure devices to adjust the flow and pressure automatically, ensuring optimal performance. The towerless design effectively saves space and reduces installation footprint, making it suitable for a variety of applications, including residential, commercial, and fire protection systems.
Typical Applications
The QHYB-CDL system is widely used in:
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Residential and Commercial Buildings: For providing constant pressure water supply.
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Fire-Fighting and Sprinkler Systems: For providing stable pressure for fire protection systems.
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Industrial Water Supply: For providing industrial water supply to production facilities.
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Hotels, Hospitals, Schools, and Office Spaces: Ensuring continuous and stable water supply.
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Agricultural Irrigation and Pressure Maintenance Systems: For irrigation and maintaining pressure in agricultural systems.
System Configuration
Pump Components
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Pump Unit: CDLF stainless steel multistage centrifugal pumps with 1–4 parallel configurations to meet different flow requirements.
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Control Cabinet: Automatic variable frequency control system for intelligent pressure adjustment.
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Pressure Tank: Ensures output stability during low flow or leakage conditions.
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Pipelines and Valves: Stainless steel construction, corrosion-resistant and durable, ensuring the long-term stability of the system.
Components and Supply
The key components of the QHYB-CDL system include the pump unit, control cabinet, pressure tank, pipelines, and valves. The pump body materials can be selected based on the media being pumped, and all critical components are designed for long-lasting, reliable performance.
Technical Service
The QHYB-CDL system offers comprehensive technical support, including installation, commissioning, regular maintenance, and troubleshooting services to ensure long-term efficiency and reliability.
Operating Conditions
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Applicable Media: Suitable for clean water and non-corrosive liquids.
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Maximum Medium Temperature: ≤80°C.
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System Pressure: The pressure can be adjusted according to specific needs.
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Flow Rate Adjustment: The pump speed is adjustable to meet different operational needs.
Service Conditions
Regular inspection of the pump unit, control system, pressure tank, pipelines, and valves is necessary to ensure the system operates efficiently and safely.
Protection Features
The QHYB-CDL system is equipped with overcurrent protection, temperature monitoring, and liquid level protection systems, ensuring the system can stop operation in abnormal conditions to prevent equipment damage.
Selection Standards
When selecting the pump model, consider factors such as the design flow, head pressure, and the type of water being supplied. Also, consider the seasonal and regional variations to ensure the system is optimized for specific conditions.
Specifications & Installation
Selection Guide
1. Recommended Pump Head vs. Supply Height
| Head (m) | 20 | 26 | 32 | 40 | 50 | 60 | 70 | 80 | 100 | 120 |
|---|---|---|---|---|---|---|---|---|---|---|
| Supply Height (m) | 10 | 14 | 18 | 25 | 32 | 38 | 46 | 55 | 72 | 88 |
2. Flow Rate vs. Number of Households
| Flow (m³/h) | 6 | 12 | 18 | 25 | 36 | 50 | 75 | 100 | 150 | 200 |
|---|---|---|---|---|---|---|---|---|---|---|
| Households | 20–30 | 40–60 | 60–100 | 100–150 | 150–200 | 200–300 | 400–500 | 600–1000 | 1000–1500 | 1500–2000 |
Performance Parameters
| Building Type | Spray Intensity (L/m²·min) | Effective Area (m²) | Flow (L/s) | Pressure (MPa) | Height (m) | Recommended Model |
|---|---|---|---|---|---|---|
| Industrial | 10 | 300 | 60 | 0.1 | ≤12 | QHYB60-0.24-125CDL-3 |
| Industrial | 10 | 300 | 60 | 0.1 | ≤50 | QHYB60-0.8-125CDL-3 |
| Storage Building | 15 | 300 | 90 | 0.1 | ≤36 | QHYB90-0.6-150CDL-3 |
| Medium Hazard | 6 | 300 | 40 | 0.1 | ≤72 | QHYB40-1.0-100CDL-3 |
| Low Hazard | 3 | 300 | 15 | 0.1 | ≤100 | QHYB15-1.2-65CDL-3 |
OEM & Custom
Chaodun Pump offers OEM and ODM services for complete water supply systems, including customized control configurations, pump models, and material options. Suitable for high-rise buildings, municipal systems, and industrial plants requiring stable and efficient water supply.
FAQs
- Q1: What is the QHYB-CDL system used for?
It provides automatic constant pressure water supply for domestic, industrial, and firefighting applications. - Q2: What type of pump does it use?
CDLF stainless steel vertical multistage centrifugal pump. - Q3: What are the main advantages?
Energy efficiency, automatic pressure control, and stable water output. - Q4: Can it be customized for different capacities?
Yes, 1–4 pumps can operate in parallel for larger systems. - Q5: Does it support both air pressure and variable frequency control?
Yes, available in both configurations for different usage scenarios. - Q6: What industries use this system?
Construction, manufacturing, firefighting, municipal, and agricultural sectors. - Q7: Does Chaodun Pump offer OEM customization?
Yes, full OEM and ODM customization including design, materials, and automation system.