How to adjust the flow of fsb fsb-l fluoroplastic pump

fsb fsb-l fluoroplastic pump is generally suitable for conveying clean water or medium similar to clean water. It can also be used as a booster, so it can be called a booster pump.

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fsb fsb-l fluoroplastic pump is generally suitable for conveying clean water or medium similar to clean water. It can also be used as a booster, so it can be called a booster pump.

Flow adjustment method of fsb fsb-l fluoroplastic pump:

1. Export saving For low and medium speed pumps, this is the most common and low-cost flow adjustment method. Generally, this method is also used in low and medium speed pumps. Any valve on some closed outlet pipelines will increase the system head, so the system head curve will intersect the pipeline pump head curve at a smaller flow rate. Outlet economy moves the operating point to a lower power point and there is a loss of power at the economizer valve. This can be important for large pump installations, and higher-cost conditioning methods can be more economically attractive. Saving to the dead point can lead to overheating of the fluid in the pump, a bypass can be used to maintain the necessary minimum flow, or a different conditioning method can be used. This is very important for the aforementioned pumps handling hot water or volatile liquids.

2. Suction import savings

If enough NPSH can be used, then some power can be saved by saving in the suction line. Inlet savings are often used in jet engine fuel line pumps because outlet savings can result in overheating or vaporization of the liquid. At very small flow rates, the impellers of these pumps are only slightly filled with liquid, so the input power and temperature rise are about 1/30 of the full working position of the impeller when the outlet is saved. The flow rate of condensed pumps is generally controlled by the engulfing depth. Appropriate for import savings. Special profiling reduces the cavitation damage of these pumps to an insignificant level, but the energy levels also get reasonably low.

3. Bypass conditioning

All or some of the flow can be diverted from the discharge line of the pipeline pump and lead to the suction port of the pump or other appropriate points through the bypass pipe. One or more flow orifices and suitable control valves can be installed in the bypass. The metering bypass is generally used to reduce the flow of the pump, primarily to avoid overheating. If the remaining flow of the bypass propeller pump is used to replace the outlet saving, a suitable amount of power can be saved.

4. Speed ​​adjustment

When this method is used to adjust the flow, the required power can be reduced to the minimum, and the overheating phenomenon during the flow adjustment process can be eliminated. Steam turbine internal combustion engines are easily adapted to speed regulation with very little additional cost. Various mechanical, magnetic, hydraulic variable speed devices and DC and AC variable speed motors can be used to adjust the speed. In general, variable speed motors are too expensive to use adjustable vane conditioning only when it proves worthwhile after an economic study of the particular situation. After studying the adjustable guide vanes installed in front of the impeller, it is found that this method is effective for pump regulation when the specific revolution = 5700 (2.086). The blades can have a positive pre-swirl, and then drop the head, flow and power. And about the relatively small conditioning effect only achieved by the leaves. Large accumulator pumps for power generation in Europe have successfully used adjustable outlet dispersion vanes. Propeller pumps with variable-pitch vanes have also been successfully studied.

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