How to correctly measure the water pump is good or bad

Category: Pump Knowledge

2024-05-06

During the operation of the pump, if abnormal conditions such as performance degradation, abnormal noise, and temperature rise are found, the machine should be shut down for inspection immediately to avoid further damage to the equipment. Through scientific measurement and fault diagnosis, we can extend the service life of the pump and improve the system Reliability to ensure the efficient operation of the pump in various application scenarios.

水泵如何正确测量好坏

1. to observe the appearance

First of all, observe whether the appearance of the water pump is damaged, and carefully check the pump body, interface seals, bearings and connecting bolts for obvious wear, cracks or corrosion. If these problems are found, the corresponding parts may need to be repaired or replaced.

2. measurement noise

When the water pump is working normally, there will be a certain amount of noise, but if the noise is too large, you need to check whether the water pump is faulty. To maintain a relatively quiet environment when measuring noise, you can use a hand-held noise meter or ear for auditory measurement. Normal water pump operation will have a low noise, but too high or abnormal noise may mean bearing damage, impeller wear or impurities into the pump body and other problems. By lightly touching the pump body with your hand, you can feel whether there is abnormal noise or vibration.

Generally speaking, the noise of small water pumps does not exceed 60 decibels when they are working normally, and large water pumps can withstand higher noise. If the measurement result exceeds the normal range, it is necessary to check whether the water pump is faulty.

3. measurement flow

First, we need to measure the flow of the pump. Measuring pump flow is one of the key indicators to judge pump performance. The correct method of flow measurement is to use a flow meter or container method. Flowmeter is an instrument specially used to measure water flow. Flowmeters of different sizes are usually selected according to the caliber of the pump. When measuring, we need to choose according to the actual use of the pump and the flow range to be measured.

The container rule is to use a standard container capacity to measure the amount of water flowing in within a certain period of time, and finally divide by the time to get the flow. This method is simple to operate and does not require additional measuring instruments, but the error is large.

4. pressure measurement

There are two main methods to measure the pressure of the water pump. One is to use a pressure gauge for direct measurement, and the other is to use the water pump outlet to generate a jet water column to measure. When using a pressure gauge for measurement, we need to connect the pressure gauge to the water pipe., And then turn on the pump to start measuring. After the measurement, the pressure value needs to be recorded and compared with the rated pressure of the pump to determine whether the pressure of the pump meets the standard.

When using the jet water column for measurement, we can use a cardboard or a small wooden board soaked in water to approach the water column, and determine whether the pressure of the water pump is normal by measuring the height of the water column. However, the measurement result of this method is relatively inaccurate. Use a pressure gauge to measure the pressure on the water outlet pipe and compare it with the rated pressure of the water pump. If the pressure is low, it may be caused by pipe blockage, pump body wear or motor failure.

Through the combination of the above methods, the quality of the pump can be judged more accurately. For any questions or problems, it is recommended to consult professional pump maintenance personnel to repair and maintain in time to ensure the normal operation of the pump.

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