New Progress of Mixed Flow Pump

Department of mixed flow pump speed is too high, making the blade line speed, causing increased pressure drop, but also the main cause of pump-type cavitation. 0, & lt; / RTI & gt; Minimize piping head loss or replace high-lift pump. Impeller Impeller of the body has been in the front of the main parts of the pump are described. The calculation of pump head, shaft power and efficiency are compared with the experimental results, which proves the feasibility of calculating the system and the origin of calculating error. Therefore, in order to prevent vaporization, generally not allowed to run in idling conditions (unless it is noted that the permit outside). The general absolute pressure of the fluid is often higher than the pressure drop through the calculation of the region a few number of levels, if maintained at the absolute value of the pressure level for long-term calculation, the pressure difference calculation will lead to greater error. Centrifugal pump impeller are used to backward leaf. Bearing noise; To appropriate over-election pump. Although the wall function method does not care about the area near the wall by the viscous force (viscous bottom layer and transition zone), but can save the cost of capital.
The prospect of hydraulic performance is also the main content of mixed-flow pump research. Semi-open impeller is located only after the disk. 5-38m3 / h; head: 30-80m; Galileo galileo pump - the European quality of power :. We can still calculate the value of seven equations, the gap before the extraction is (solitary / hoe) =. Also pointed out that the leaves can be divided into forward, radial and backward to three types. Explosion-proof fan is made of non-ferrous metal, anti-corrosion fan Zeyi plastic sheet as the material. All parts of the metal parts are made of high-quality acid-resistant stainless steel construction, liner with non-toxic and tasteless rubber, the working temperature of up to 120 ℃, can be used to transport food slurry and viscosity 10000 Pascal seconds? Containing the solid particles or gel block of the solution slurry, the suspension of aggressive media.
Durmuskaya [1] also studied the effect of guide vanes on the performance of a mixed-flow pump, which he attempted by several mixed-flow pumps with or without guide vanes, and concluded that although the addition of guide vanes would increase the axial friction torque, Leaves can change the tangential velocity kinetic energy of the twist into pressure potential energy, and the efficiency of the mixed-flow pump can be improved by 3% when the guide vanes are used.When the flow qv (qv = a) and the import condition are the same, The absolute speed than the curved curved blade, and liquid flow loss is proportional to the square of the speed.
In recent years, the method of numerical calculation directly solves the three-dimensional viscous flow in the mixed flow pump to obtain rapid growth. In the original variable method, when solving the variables based on the pressure, the solution of the unstressed flow field is mainly used, but in recent years it has been successfully extended to the compaction of the compressible flow field. If the blade mounting angle is adjustable and the shaft angle is small at the blade installation angle, the axial flow pump and fan for the adjustable blades can be started at a small installation angle. Second, the control equation and the selection of the premise of the gap.