The Standard of Good Working of Centrifugal Pumps
Centrifugal pumps are widely used in many industries because of their low cost, high efficiency and wide application. The standard of good working of centrifugal pumps is related to the performance and life of the pumps, and is also related to the safety and reliability of the normal operation of the pumps. Therefore, understanding the standard of good working of centrifugal pumps is necessary to ensure the safe and reliable operation of the centrifugal pumps.
The standard of good working of centrifugal pumps includes the following aspects:
1. Properly design the centrifugal pump system according to the actual needs. Before selecting the pumps, the flow, head and other parameters of the system must be confirmed, and the power of the pump must be determined based on the parameters of the system. The end user must first understand and accurately judge the main parameters of the working point of the system. The centrifugal pump chosen should be suitable for the working environment and conditions of the system, and should have adequate flow and head margin. The pump design should be in accordance with the laws of fluid dynamics and mechanics, but the pumping system should also be designed according to the actual needs of the occasion.
2. Mechanical and hydraulic characteristics of centrifugal pumps. Under the specified working conditions, the mechanical and hydraulic performance characteristics of centrifugal pumps directly affect the working performance of pumps. The mechanical characteristics refer to the parameters of shaft power and torque, and the hydraulic characteristics refer to the pressure head, flow rate, efficiency and related characteristic curves at a certain point.
3. The cleanliness of the system pipeline. Before starting the pumps, please make sure that the system pipeline is cleaned. If the media contains impurities, it may cause the pumps to be blocked and damaged. Therefore, before running the pumps, it is necessary to check whether the system is blocked and clean the impurities in the pipeline.
4. The installation of the centrifugal pump should be strictly in accordance with the manufacturers requirements. The following points should be noted during installation:
(1) The foundation of the centrifugal pump must be raised slightly above the axial level to ensure that the pump has a certain tilt angle.
(2) It is necessary to check whether the seal of the pump body is good and whether other auxiliary parts are installed properly. Special attention should be paid to the installation of the base and bearing, and the installation quality should be checked strictly.
(3) When installing the coupling sleeve, the keyway should be carefully inspected, and the coupling and coupling sleeve should be fastened with screws or flat key according to the instructions.
5. The temperature of bearing in centrifugal pumps should be strictly controlled. If the temperature is too high, measures such as lubrication and cooling should be taken. It is also important to check the oil level in the bearing, which should not be too low.
6. Run-in, startup and adjustment of centrifugal pumps. After the centrifugal pump system is installed, it should be run-in, started and adjusted according to the regulations. Generally, during the run-in and startup period, the speed should be low to protect the mechanical parts and the impellers. During the adjustment period, the directions of flow and head should be adjusted according to actual needs.
7. Routine maintenance of centrifugal pumps. In order to ensure the good working of the centrifugal pumps, it is necessary to carry out regular maintenance at a fixed time, and necessary inspection and maintenance should be carried out when the centrifugal pumps fail.
In summary, understanding the standard of good working of centrifugal pumps is necessary to ensure the safe and reliable operation of the centrifugal pumps. The standard of good working of centrifugal pumps includes design, mechanical and hydraulic characteristics, cleanliness of the pipeline, installation, temperature of bearing, adjustment, and routine maintenance of centrifugal pumps. Special attention should be paid to these points when using the centrifugal pumps.
