When Slurry working fluid when the wheel rotates with the main aspects together , at the same time and from the rotating impeller in each flight. Liquid with the rotational movement of the impeller is called circular motion , the base rate is called peripheral speed , use u said . Liquid from rotating impeller inside outward flow is called relative motion , its speed relative velocity , expressed in W. liquid relative to the pump body movement known as absolute motion , its speed is called the absolute speed , with V represents absolute velocity V and u is equal to the peripheral speed of the relative velocity vector and W , i.e., V = u + W The peripheral speed of the impeller driving the liquid circumferential tangent line direction , as shown in 2-1a); direction tangential to the blade relative velocity of liquid , the absolute velocity direction of the liquid velocity of the circumferential direction of the combined velocity and relative velocity , as shown – Figure 2. Liquid movement inside the impeller can be represented graphically . Graph showing the liquid in impeller speed and direction of movement is called the velocity triangle . Liquid inside the impeller speed at any point in the triangle shown in Figure 2-2 . Solid . On occasion,slurry pump manufacturer the most useful is the impeller inlet and outlet fluid flow state .
When the impeller size is known , the given parameters , the impeller may be made of the inlet and outlet velocity triangle , so that the liquid can be analyzed at the impeller inlet and the outlet of the flow state . In order to make the velocity triangle , the absolute velocity usually decomposed into two orthogonal velocity components : one is the vertical velocity of the circumferential velocity , it is usually referred to as axial velocity , represented by Vm ; another direction is consistent with the circumferential speed of the velocity component , often called it the circumferential velocity component , with Vm said , shown in Figure 2-3 .
In the velocity triangle , the angle of the absolute velocity V between the circumferential velocity u with a said angle between the circumferential speed of the relative velocity w is represented by u between β.
Post time: Jul-13-2021