The influence of sediment on the pump performance

Has been consensus by everyone, aroused the concern of the use, planning, design and manufacturing. So there is no cause the attention they deserve. Generally, the greater the concentration, the more obvious impact. In our country and foreign production of all kinds of centrifugal pump, axial flow pump, mixed-flow pump generally are design according to the theory of water in a water pump performance, the parameters are also provided data under the condition of water, not considering the water sediment particles affect the flow of fluid in the pump flow passage. This creates a series of problems for engineering design. Feedback information from an existing engineering practice, when the water sediment concentration is bigger, is still using the parameters of the fresh water pump for engineering and water pump design is unreasonable, so study the influence of the sediment on water pump working parameters, for the pump and more accurate and reliable design basis for engineering design Is necessary and realistic task. In order to explore the sediment concentration on the pump head, flow rate and efficiency, the influence of height of suction on the vacuum, the gansu province water conservancy and hydropower survey design institute commissioned in 1988, tsinghua university has carried on the Yellow River sediment effect on pump performance test, after the 1992 and 1994, Ministry of Water Resources survey and design institute for research in tianjin muddy water horizontal pump test bed by ministerial appraisal. System under the condition of clear water and muddy water test precision and high automation level, has better stability and repeatability, in order to study the pump running in of sands contained stream flow to the rule and mechanism of abrasive wear, in order to choose the better pump type, the optimization of the design parameters of the pump in the relatively standardized work. Research and development in other countries seldom contact with unique topic, also is a kind of professional responsibility, in the future in more mud fluid application, should be inherited.

muddy water test rig is one of the most important elements of model sand, in this respect by color hall and other relative study have be done, in choosing a quartz sand ( 270 mesh, d50 = 0. 03mm) Little influence on the performance of the turbine, and use with fine quartz sand with grain size of Yellow River ( d = 0。 03mm) During test, found that with the increase of sediment concentration, the rotational speed of turbine efficiency and the units ( The power station running head) , as shown in figure 47. When using the coarse sand of the Yellow River ( d = 0. 25毫米) Experiment, found the sediment concentration have different effect on the performance of the turbine, as shown in figure 4. 8. Explained the selection of muddy water test of model sand sample to study different river system hydraulic turbine characteristics is very important, must carry on the comparison.

in muddy water horizontal pump test-bed for sh - 10 13 type single-stage double-suction centrifugal pump in the water, and 100 kg/m3. Sediment concentration of water pump characteristic curve form similar, but the concrete numerical have bigger difference, as shown in figure 4. 9. In a variety of the Yellow River sediment concentration, 0、5公斤/立方米。 15公斤/立方米。 40公斤/立方米。 ,60公斤/立方米。 100公斤/立方米。 ) 10.

large sediment concentration we suggest some wear resistance water pump products such as: wear-resisting self-priming mud pump, such as the desulfurization of circulating pump slurry pump products.

the sediment of water pump, the influence of sediment affect the performance of the pump technology news articles written by professional stainless steel pump.

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