Secondary water supply equipmentIt means that when the municipal water supply pressure is insufficient or the water supply is unstable, water is transported to the user end through pressurized equipment to ensure the stability and reliability of water supply.Secondary water supply equipmentIt is widely used in high-rise buildings, residential areas, commercial complexes, industrial parks and other places.

The following isSecondary water supply equipmentWorking principle and detailed data:

1.Working principle

Secondary water supply equipmentThe working principle mainly includes the following steps:

1. Water input: Municipal water supply or other water sources enter through the water inlet pipeSecondary water supply equipmentwater storage tank or pool.
2. water quality treatment: In some systems, water will undergo preliminary water quality treatment, such as filtration, disinfection, etc., before entering the water storage tank or pool to ensure that the water quality meets standards.
3. water level control: A water level sensor is installed in the water storage tank or pool to monitor the water level. When the water level is lower than the set value, the water replenishment valve will automatically open to replenish the water source; when the water level reaches the set value, the water replenishment valve will automatically close.
4. Pressurized water supply: When users’ water demand increases,water pumpStart up and deliver water to the user through pressurization.water pumpThe start and stop of the pipe are automatically controlled by pressure sensors and control systems to maintain constant pressure in the pipe network.
5. Frequency conversion control:modernSecondary water supply equipmentFrequency conversion control technology is usually used to automatically adjust the speed of the water pump according to the actual water consumption, thereby achieving energy saving and stable water supply.
6. water quality monitoring: Some high-end systems are also equipped with water quality monitoring equipment to monitor water quality parameters in real time, such as turbidity, residual chlorine, pH value, etc., to ensure the safety of water supply.

2.Equipment composition

• water storage tank or pool:

  • Material: Stainless steel, fiberglass, concrete, etc.
  • capacity: Depending on the demand, it usually ranges from a few cubic meters to dozens of cubic meters.
  • water level sensor: Used to monitor water level, common ones include float switch, ultrasonic sensor, etc.

• water pump:

  • type:centrifugal pump,submersible pump,booster pumpwait.
  • power: Typically ranges from a few kilowatts to tens of kilowatts, depending on system requirements.
  • flow: The unit is cubic meters per hour (m3/h) or liters per second (L/s), and the common range is 10-500 m3/h.
  • Lift: The unit is meters (m), the common range is 20-150 meters.

• Frequency converter:

  • Power range:andwater pumpMatching, usually in the range of several kilowatts to tens of kilowatts.
  • Control method: PID control, constant voltage control, etc.

• control system:

  • PLC controller: Used for logic control and data processing.
  • sensor: Pressure sensor, flow sensor, water quality sensor, etc.
  • control Panel: Used for human-computer interaction to display system status and parameters.

• Water quality treatment equipment:

  • filter: Sand filter, activated carbon filter, etc.
  • Sterilizer: Ultraviolet sterilizer, chlorine sterilizer, etc.

• Pipes and Valves:

  • Material: Stainless steel, PVC, PE, etc.
  • Specification:Select based on flow and pressure requirements.

3.Performance parameters

• Flow(Q):

  • Unit: cubic meters per hour (m3/h) or liters per second (L/s).
  • Common range: 10-500 m3/h.

• Lift(H):

  • Unit: meter (m).
  • Common range: 20-150 meters.

• Power(P):

  • Unit: kilowatt (kW).
  • Common range: several kilowatts to tens of kilowatts.

• Efficiency(n):

  • Indicates the energy conversion efficiency of the device, usually expressed as a percentage.
  • Common range: 60%-85%.

• Pressure(P):

  • Unit: Pascal (Pa) or bar (bar).
  • Common range: 0.2-1.5 MPa (2-15 bar).

• water quality parameters:

  • Turbidity: The unit is NTU (Nephelometric Turbidity Units), and the common range is 0-5 NTU.
  • Residual chlorine: The unit is mg/L, and the common range is 0.1-0.5 mg/L.
  • pH value: Common range is 6.5-8.5.

4.Work process details

• Start time:

  • From receiving the start signal towater pumpThe time to reach the rated speed is usually a few seconds to tens of seconds.

• water level control:

  • Low water level set value: Usually 20%-30% of the capacity of the water storage tank or pool.
  • High water level set value: Usually 80%-90% of the capacity of the water storage tank or pool.

• Frequency conversion control:

  • frequency range: Typically 0-50 Hz.
  • Control accuracy：±0.1 Hz。

• pressure control:

  • Set pressure: Set according to user needs, the common range is 0.2-1.5 MPa.
  • Pressure fluctuation range：±0.05 MPa。

5.Application scenarios

• high-rise building:

  • High-lift equipment is required to ensure that water can be transported to the upper floors.
  • Typical parameters: flow rate 50-200 m3/h, head 50-150 meters.

• residential area:

  • Stable flow and pressure are required to meet residents' water needs.
  • Typical parameters: flow rate 100-300 m3/h, head 30-100 meters.

• commercial complex:

  • High-flow equipment is required to handle peak water demands.
  • Typical parameters: flow rate 200-500 m3/h, head 20-80 meters.

• industrial park:

  • Equipment with specific water quality and pressure is required to meet the needs of industrial production.
  • Typical parameters: flow rate 50-200 m3/h, head 20-100 meters.

6.Maintenance and care

• Regular inspection:

  • examinewater pump, the status of the inverter and control system.
  • Check the operation of water treatment equipment.

• clean:

  • Clean water storage tanks or pools regularly to ensure water quality.
  • Clean filters and sterilizers.

• lubricating:

  • regularly forwater pumpAdd lubricating oil to other moving parts.

• test run:

  • Conduct regular test runs to ensure that the equipment can start and operate normally in an emergency.

With these detailed data and parameters, a more comprehensive understanding can beSecondary water supply equipmentworking principle and performance characteristics for better selection and maintenanceSecondary water supply equipment.