How to achieve efficient selection and stable operation of Split Case Pump in urban water supply system?

To achieve efficient selection and stable operation of Split Case Pump (double-suction split centrifugal pump) in urban water supply system, it is necessary to comprehensively consider multiple dimensions such as system design, equipment performance, operation control and maintenance management:

1. Accurately determine system operating parameters
First, it is necessary to scientifically calculate the required design flow and head based on the overall scale of urban water supply, service population, water source distribution and pipe network layout. At the same time, peak and valley loads, future expansion and backup capacity in emergency situations should be considered to provide accurate basic data for pump selection.

2. Optimize hydraulic performance matching
Split Case Pump is suitable for water delivery scenarios with large flow and medium head. During the selection process, the high-efficiency operating point (optimal efficiency point) of the pump should be selected to coincide with the normal operating point of the system as much as possible. It is also necessary to pay attention to the efficiency change curve of the pump in different flow sections to ensure that it still has good hydraulic performance under variable working conditions.

3. Reasonable configuration of pump group and control method
The urban water supply load is volatile. It is recommended to use multi-pump parallel configuration and cooperate with variable frequency control system to achieve on-demand adjustment. Through the automatic control strategy, the pump group can automatically start and stop or adjust the speed according to the actual water consumption, thereby improving the overall operation efficiency and reducing energy consumption.

4. Consider the convenience of installation and maintenance
The Split Case Pump adopts a horizontal split structure, which is convenient for future inspection and maintenance without removing the pipeline system and motor. When selecting the model, factors such as structural compactness, basic space requirements, and spare parts versatility should be considered to improve the maintainability and response speed of the entire pump station system.

5. Material and structural adaptability selection
According to the water quality characteristics of the water medium (such as whether it contains trace corrosive components), select suitable pump body materials such as cast iron, ductile iron or stainless steel to extend the service life. For high-lift occasions, attention should also be paid to the shaft seal form, bearing configuration and rotor stability design.

6. Vibration reduction and noise reduction and stable operation guarantee
In order to reduce the impact on the surrounding environment, a reasonable foundation structure, elastic coupling and vibration isolation device should be designed during the installation of the pump group. During operation, the pump shaft concentricity and rotor balance should be ensured to avoid unstable system operation or even shutdown due to vibration or noise.

7. Improve monitoring and fault diagnosis system
When using Split Case Pump in the water supply system, online monitoring devices such as vibration sensors, temperature monitoring, flow and pressure feedback should be configured simultaneously to achieve real-time monitoring of the operating status and fault warning, effectively improving the intelligent management level of the system.

8. Comprehensive evaluation of the life cycle cost
Finally, not only should we pay attention to the initial purchase cost of the pump equipment, but also comprehensively evaluate its life cycle cost (LCC) from aspects such as operating energy consumption, maintenance frequency, replacement cycle of wearing parts and system downtime loss, so as to achieve long-term stable and economic operation.

Through the above measures, the urban water supply system can achieve efficient selection and stable operation of Split Case Pump, ensuring water supply safety, energy saving and sustainable development.