Can the required net positive suction head of a pump be determined through performance tests? Urgent online request
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For the general parameters of performance testing on water pumps, I am aware of things such as power, efficiency, curves showing head and flow rate, as well as vibration levels. What other items are there besides this? Can the required net positive suction head of a water pump be reflected in performance tests? Can the required net positive suction head be included as an item in the performance tests?
Urgent online. . . I’m begging all the sea friends.
Sure. Manufacturers usually do it all together.
Performance test requirements for pumps and turbines: (1) Strict compliance with API610 is required； (2) Minimum continuous stable flow rate (from the start of the allowable operating range) (3) Between 95% and 99% of the rated flow rate (4) Between the rated flow rate and 105% of the rated flow rate (5) Near the optimal efficiency flow rate (if the rated flow rate is within 5% of the optimal efficiency flow rate) (6) The extreme limits of the allowable operating range ； (7) Mechanical operation test in accordance with API 610 (11th edition), Section 8.3.4.2 ； (8) The testing of the complete unit shall be carried out in accordance with Section 8.3.4.4 of API 610 (11th edition); the performance tests of the pump unit shall be conducted using the pumps, motors, gearboxes, clutches, and high-pressure hydraulic turbines provided by the supplier’s factory. (9) Conduct motor inspection tests and type tests at the motor supplier’s factory in accordance with IEC standards and the motor supplier’s standards.
The cavitation margin test is a separate test and is not included in the performance tests. It depends on the requirements in the contract; not all pumps need to be done. Generally, when the difference between NPSHa and NPSHr is less than 1 meter, an erosion margin test requiring on-site verification is necessary.
I agree with what was said above; generally, only performance tests are required, while cavitation tests are carried out less often
What are the general performance tests? It is said online that they are generally curves of shaft power versus flow rate, head versus flow rate, and efficiency versus flow rate. What else?
What are the general performance tests? It is said online that they are generally curves of shaft power versus flow rate, head versus flow rate, and efficiency versus flow rate. What else?
One issue is that we are a small power plant, while API 610 applies to the petrochemical and natural gas industries. Is it applicable?
So please take a look at your inquiry document to see what standards the pump is required to meet.
It can be tested; requirements can be made separately to the pump manufacturer