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fuyangby@126.com
86 15188770013
1. Export throttling regulation
Export throttling is achieved by closing the valve on the outlet pipeline to increase the system pressure head, so that the system pressure head curve intersects with the slurry pump pressure head curve at low flow rates, in order to regulate the flow rate. However, this adjustment method may result in power loss at the throttle valve and may cause liquid overheating or vaporization.
2. Variable speed adjustment
Variable speed regulation is to adjust the flow rate by changing the speed of the slurry pump impeller. This method has minimal additional power loss and is the most economical approach. It is suitable for slurry pumps driven by steam turbines, internal combustion engines, and DC motors, and can also change the motor speed through variable frequency regulation.
3. Bypass regulation
Bypass regulation is the use of bypass diversion to regulate flow, which can solve the problem of continuous operation of slurry pumps at low flow rates. But this method will result in underutilization of diverted flow, increased additional losses, and an increase in process pipelines.
4. Cut the outer diameter of the impeller
By cutting the outer diameter of the impeller to adjust the flow rate of the slurry pump, the power loss is small, but the impeller cannot be restored after cutting, and the flow rate can only be adjusted in the direction of small flow rate. This method is suitable for situations where it is necessary to work under low traffic for a long time and the traffic changes are not significant.
5. Replace the impeller
Replacing impellers with different diameters or outlet widths to adjust the flow rate of the slurry pump results in minimal power loss, but requires multiple diameters of impellers and a limited range for adjusting the flow rate.
6. Block part of the impeller flow channel
By blocking the impeller flow channel (even number) to reduce the flow rate of the slurry pump, it is equivalent to throttling regulation of the outlet valve, but it belongs to active regulation, reducing additional energy loss and saving energy compared to throttling regulation of the regulating valve.
7. Adjust the outlet placement angle of the blade
By changing the outlet placement angle of the impeller blades, the flow rate of the slurry pump can be adjusted, which is commonly used in axial slurry pumps.
8. Cavitation control
By changing the inlet pressure (water level, suction valve) of the slurry pump, cavitation occurs in the pump, altering the characteristic curve of the slurry pump and thus changing the flow rate of the slurry pump. Practice has proven that if cavitation control is used appropriately, the damage to the flow components of the slurry pump is not severe; On the other hand, it can automatically adjust the flow rate and reduce the power consumption of the slurry pump.
9. Increase or decrease the number of slurry pumps
By increasing or decreasing the number of slurry pumps in operation and using appropriate merging methods, the flow rate of slurry pumps can be adjusted.
The above methods each have their own advantages and disadvantages, and choosing the appropriate flow regulation method needs to be determined based on specific operating conditions and requirements.
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(Editor in charge: Slurry Pump https://www.fuyangpumps.com/)
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