Steam condensate pump
Thread Content
All the condensate in our plant’s equipment is supplied by this steam condensate pump. But now, as long as the flow rate of this pump increases slightly, it stops working; the exact flow rate is unknown, but it’s certain that it’s very low. The motor has a power of 75 KW, and the pump can achieve a head of 160 m; however, the electrician said that there is no problem with the motor. This is a standard centrifugal pump. May I ask whether your company uses multi-stage or single-stage centrifugal pumps? Is it the low motor power or is there a problem with the pump?
May I ask the original poster: Does this pump’s motor have an ammeter? If not, it is recommended to add one; if it operates under overload conditions, its operating current will at least exceed the motor’s rated current. In any case, based on the analysis provided by the poster, the main reason for the pump to shut down was overloading.
If it was normal before but now trips as soon as a load is applied, it is highly likely to be an electrical fault. (It is recommended to check the pump’s thrust.)
I’m not sure how the manufacturer has set up the process. In a process with a production capacity of 1,620 tons per day, the condensate used throughout the entire system comes from this pump (excluding the compression unit); it serves as a source of water for common use and plays a very important role. Its flow rate is not low, but there is no gauge to display it. However, another function of this pump is to remove the excess water from the system, and there is a gauge for that purpose, so the amount of water used for common purposes can be calculated easily! The poster said on floor 1, “But the specific traffic volume is unknown; what is certain is that it’s very low.” This statement is not quite appropriate! One must learn the material balance of various systems. This will help you gain a comprehensive understanding of your system and make accurate judgments in a timely manner based on the information displayed in various tables. Secondly, the electrician said there is no problem with the motor; it is recommended to measure the current in the motor, while the operator should check the operation of the pump. I think it’s unnecessary to go into detail regarding the key points for inspection.
1. There is an ammeter at the site of this motor; under normal conditions the current should not exceed 150, but when the machine stopped operating, the current exceeded this value. 2. The device has not been operated yet; thank you to all the moderators for their analysis. However, based on the data and parameters, the motor power is 75 KW, the pressure is 1.6 Mpa, and the flow rate is around 30 m3. This traffic shouldn’t cause an overload, right?