water ring pump analysis of flow process

In the design of the water ring pump, it is very important to determine the circumferential speed of the impeller, because the peripheral speed has a great influence on the performance of the pump, which can be said to be global. Other parameters of the pump such as critical compression ratio, pole
Limiting vacuum, efficiency, etc. are closely related to the weekly speed. Generally speaking, if the peripheral speed is too small, the pump will not reach the predetermined critical compression ratio, and the ultimate vacuum will also decrease.
The working range of the pump is narrowed, and the power of the shaft in the high vacuum zone is increased. On the other hand, if the peripheral speed is too large, although the critical compression ratio and the ultimate vacuum of the pump can be increased, the excessive peripheral speed will be
If the efficiency of the pump is reduced, the shaft power will also rise. Moreover, due to the vaporization pressure of the liquid ring medium, the excessive peripheral speed will not increase the critical compression ratio proportionally. Therefore, the peripheral speed
The selection should not be too large. How to reasonably select the peripheral speed so that the pump has both satisfactory performance and small energy consumption is a problem worthy of discussion when designing the water ring pump.
When the impeller rotates to drive the liquid to rotate to form a liquid ring, the liquid ring acts as a boundary of the closed chamber and continuously obtains kinetic energy from the impeller in the suction zone, and the speed continues to increase until the impeller is the most
The peripheral speed of the impeller of the large eccentric point reaches the large value of the site, and in the compression zone, the work of the gas is compressed in the form of "live cold", and part of the kinetic energy obtained from the impeller is transmitted to the gas to make the gas
The body pressure rises, and the working process of the water ring pump is actually the most energy conversion process between the impeller, the liquid ring and the gas, and the energy level rule is obeyed. Among them, the kinetic energy of the liquid ring
Depends on the peripheral speed of the impeller. The large peripheral velocity indicates that the kinetic energy of the liquid from the impeller is large, and the function of the gas is strong, which means that a certain volume of gas can be obtained higher.
The compression ratio; conversely, the liquid exerts a weaker function on the gas.
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