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Catalogue
1. Core principles and system composition
2. Auxiliary system
3.Pipeline connection components
4. Intelligent control expansion
5. Application Fields
6. How to choose a suitable variable frequency constant pressure water supply equipment
1.Core principles and system composition
Working Principle
The pressure sensor monitors the pressure of the pipe network in real time, transmits the signal to the PID regulator, adjusts the output frequency of the inverter after comparing with the set value, controls the speed of the water pump, and realizes constant pressure water supply.
Multi pump collaborative control: The main pump is responsible for supplying high flow water, while the auxiliary pump or pressure tank is used to reduce energy consumption during low flow periods (such as nighttime).
System components
Core components
Variable Frequency Drive
As the system control center, precise flow control is achieved by adjusting the motor speed to maintain constant pipeline pressure.
Support PID algorithm for automatic pressure regulation and form a closed-loop feedback system with pressure sensors.
Water Pump Unit
It includes a main pump and an auxiliary small pump (or pressure tank). The main pump is responsible for the main water supply task, while the small pump is used to maintain pressure and save energy at low flow rates.
The motor type can be selected as permanent magnet synchronous motor (energy-saving 20% -30%) or ordinary asynchronous motor.
Pressure Sensor
Real time monitoring of pressure changes in the pipeline network, data feedback to the frequency converter to adjust the operation status of the water pump.
The measurement accuracy should be ≤± 0.01MPa to ensure the stability of constant pressure control.
Control Cabinet
Integrate PLC, contactors, protective relays and other components to coordinate water pump start stop and variable frequency speed regulation.
Support remote monitoring (mobile app/PC) and multi pump load balancing management.
2. Auxiliary system
2.1. Stable flow tank/voltage regulator compensator
Buffer water flow impact to prevent water pressure fluctuations caused by sudden changes in short-term water usage.
The volume design should cover peak water demand and reduce the frequency of frequent start stop of the main pump.
2.2. Valve components
Butterfly valve: regulates the direction and flow of water, installed at the inlet and outlet of the water pump.
Check valve: to prevent water backflow from damaging the water pump, it is often designed with a silent type.
2.3. Protective device
Integrated multiple protection functions such as overvoltage, undervoltage, phase loss, and overcurrent, adapting to voltage fluctuations of ± 15%.
Lightning protection module is an essential component for outdoor equipment (such as mines and rural scenes)
3. Pipeline Connection Components
3.1 No negative pressure device
When the pressure in the municipal pipeline network is unstable, the residual pressure is directly used to supply water and avoid secondary pollution of the water tank.
Includes negative pressure eliminator and pressure compensator .
3.2 Pipeline System
The material can be galvanized steel pipe (for ordinary scenarios) or stainless steel pipe (for corrosive media).
The inlet diameter should be at least two levels smaller than the equipment diameter to ensure stable pressure
4. Intelligent control expansion
4.1 Remote Monitoring Module
Supports 4G/5G communication, real-time uploading of pressure, traffic, energy consumption and other data to the cloud platform.
Pressure threshold alarm and fault self check functions can be set.
4.2 Energy Efficiency Optimization System
Automatically switch the operation combination of water pumps and prioritize the use of efficient pump groups (such as master-slave pump coordination).
Support sleep wake mode, automatic shutdown for energy saving when using pocket water
Technical advantages
Efficient and energy-saving
Dynamically adjusting the output power based on water consumption can save more than 30% energy compared to traditional water supply methods.
ECO intelligent algorithm optimizes energy consumption, saving 30% more energy than ordinary frequency converters in some scenarios.
Constant pressure stability
The pressure fluctuation range is ≤± 0.01MPa, suitable for occasions such as showers and central air conditioning that are sensitive to water pressure.
Voltage adaptive capability (such as 240V-420V wide voltage input) ensures stable operation in rural or unstable areas of the power grid.
Intelligence and reliability
Support remote monitoring (APP/PC end), fault self checking, and sound and light alarms to reduce maintenance costs.
Multiple protection mechanisms: overvoltage, undervoltage, phase loss, lightning protection, etc., extend equipment life.
How to choose a suitable variable frequency constant pressure water supply equipment?
1. Clarify the core parameter requirements
1.1. Flow and head matching
Flow calculation: Calculate the maximum hourly flow based on the water usage scale (such as the number of households and industrial water consumption). Residential communities can refer to the per capita water usage quota (2-3m ³/household · day) and peak demand.
Head determination: The formula is H=H1+H2+H3+H4 (geometric height difference+pipeline resistance+outlet pressure+safety margin), which needs to cover the pressure requirements at the most unfavorable point (such as high-rise buildings that need to overcome floor height and pipeline losses).
Power selection: Avoid "big horses pulling small cars", match the water pump power according to the actual load, and prioritize the selection of permanent magnet synchronous motors (energy-saving 20% -30%) or wide voltage adaptive models (240V-420V).
2.2. Pressure control accuracy
The voltage stabilization accuracy should be ≤ ± 0.01MPa to meet the requirements of sensitive scenarios such as showers and central air conditioning; The frequency conversion range should cover from the lowest speed to the power frequency speed (such as 0.5Hz-50Hz)
2.Equipment type and scene adaptation
Equipment type | applicable scenarios | technical advantages | representative models |
Box type non negative pressure equipment | Unstable areas under municipal pressure | Directly utilizing the residual pressure of the pipeline network without the need for a water tank, saving energy by 30% -50% | FS300 series (multiple pumps in parallel) |
Variable frequency constant pressure water supply equipment | High rise buildings and industrial parks | Master slave pump collaborative control, intelligent pressure regulation, supports remote monitoring | FG270 series (book style structure) |
Integrated smart pump room | Renovation of old residential areas and restricted spaces | Compact design, IP54 protection, dustproof and waterproof | FS200 series (backpack mounted) |
Outdoor enhanced equipment | Mining and field irrigation | High temperature/corrosion resistance, bottom inlet and outlet design, lightning protection | FH300 series (IP54 protection) |
Catalogue
1. Core principles and system composition
2. Auxiliary system
3.Pipeline connection components
4. Intelligent control expansion
5. Application Fields
6. How to choose a suitable variable frequency constant pressure water supply equipment
1.Core principles and system composition
Working Principle
The pressure sensor monitors the pressure of the pipe network in real time, transmits the signal to the PID regulator, adjusts the output frequency of the inverter after comparing with the set value, controls the speed of the water pump, and realizes constant pressure water supply.
Multi pump collaborative control: The main pump is responsible for supplying high flow water, while the auxiliary pump or pressure tank is used to reduce energy consumption during low flow periods (such as nighttime).
System components
Core components
Variable Frequency Drive
As the system control center, precise flow control is achieved by adjusting the motor speed to maintain constant pipeline pressure.
Support PID algorithm for automatic pressure regulation and form a closed-loop feedback system with pressure sensors.
Water Pump Unit
It includes a main pump and an auxiliary small pump (or pressure tank). The main pump is responsible for the main water supply task, while the small pump is used to maintain pressure and save energy at low flow rates.
The motor type can be selected as permanent magnet synchronous motor (energy-saving 20% -30%) or ordinary asynchronous motor.
Pressure Sensor
Real time monitoring of pressure changes in the pipeline network, data feedback to the frequency converter to adjust the operation status of the water pump.
The measurement accuracy should be ≤± 0.01MPa to ensure the stability of constant pressure control.
Control Cabinet
Integrate PLC, contactors, protective relays and other components to coordinate water pump start stop and variable frequency speed regulation.
Support remote monitoring (mobile app/PC) and multi pump load balancing management.
2. Auxiliary system
2.1. Stable flow tank/voltage regulator compensator
Buffer water flow impact to prevent water pressure fluctuations caused by sudden changes in short-term water usage.
The volume design should cover peak water demand and reduce the frequency of frequent start stop of the main pump.
2.2. Valve components
Butterfly valve: regulates the direction and flow of water, installed at the inlet and outlet of the water pump.
Check valve: to prevent water backflow from damaging the water pump, it is often designed with a silent type.
2.3. Protective device
Integrated multiple protection functions such as overvoltage, undervoltage, phase loss, and overcurrent, adapting to voltage fluctuations of ± 15%.
Lightning protection module is an essential component for outdoor equipment (such as mines and rural scenes)
3. Pipeline Connection Components
3.1 No negative pressure device
When the pressure in the municipal pipeline network is unstable, the residual pressure is directly used to supply water and avoid secondary pollution of the water tank.
Includes negative pressure eliminator and pressure compensator .
3.2 Pipeline System
The material can be galvanized steel pipe (for ordinary scenarios) or stainless steel pipe (for corrosive media).
The inlet diameter should be at least two levels smaller than the equipment diameter to ensure stable pressure
4. Intelligent control expansion
4.1 Remote Monitoring Module
Supports 4G/5G communication, real-time uploading of pressure, traffic, energy consumption and other data to the cloud platform.
Pressure threshold alarm and fault self check functions can be set.
4.2 Energy Efficiency Optimization System
Automatically switch the operation combination of water pumps and prioritize the use of efficient pump groups (such as master-slave pump coordination).
Support sleep wake mode, automatic shutdown for energy saving when using pocket water
Technical advantages
Efficient and energy-saving
Dynamically adjusting the output power based on water consumption can save more than 30% energy compared to traditional water supply methods.
ECO intelligent algorithm optimizes energy consumption, saving 30% more energy than ordinary frequency converters in some scenarios.
Constant pressure stability
The pressure fluctuation range is ≤± 0.01MPa, suitable for occasions such as showers and central air conditioning that are sensitive to water pressure.
Voltage adaptive capability (such as 240V-420V wide voltage input) ensures stable operation in rural or unstable areas of the power grid.
Intelligence and reliability
Support remote monitoring (APP/PC end), fault self checking, and sound and light alarms to reduce maintenance costs.
Multiple protection mechanisms: overvoltage, undervoltage, phase loss, lightning protection, etc., extend equipment life.
How to choose a suitable variable frequency constant pressure water supply equipment?
1. Clarify the core parameter requirements
1.1. Flow and head matching
Flow calculation: Calculate the maximum hourly flow based on the water usage scale (such as the number of households and industrial water consumption). Residential communities can refer to the per capita water usage quota (2-3m ³/household · day) and peak demand.
Head determination: The formula is H=H1+H2+H3+H4 (geometric height difference+pipeline resistance+outlet pressure+safety margin), which needs to cover the pressure requirements at the most unfavorable point (such as high-rise buildings that need to overcome floor height and pipeline losses).
Power selection: Avoid "big horses pulling small cars", match the water pump power according to the actual load, and prioritize the selection of permanent magnet synchronous motors (energy-saving 20% -30%) or wide voltage adaptive models (240V-420V).
2.2. Pressure control accuracy
The voltage stabilization accuracy should be ≤ ± 0.01MPa to meet the requirements of sensitive scenarios such as showers and central air conditioning; The frequency conversion range should cover from the lowest speed to the power frequency speed (such as 0.5Hz-50Hz)
2.Equipment type and scene adaptation
Equipment type | applicable scenarios | technical advantages | representative models |
Box type non negative pressure equipment | Unstable areas under municipal pressure | Directly utilizing the residual pressure of the pipeline network without the need for a water tank, saving energy by 30% -50% | FS300 series (multiple pumps in parallel) |
Variable frequency constant pressure water supply equipment | High rise buildings and industrial parks | Master slave pump collaborative control, intelligent pressure regulation, supports remote monitoring | FG270 series (book style structure) |
Integrated smart pump room | Renovation of old residential areas and restricted spaces | Compact design, IP54 protection, dustproof and waterproof | FS200 series (backpack mounted) |
Outdoor enhanced equipment | Mining and field irrigation | High temperature/corrosion resistance, bottom inlet and outlet design, lightning protection | FH300 series (IP54 protection) |