Gas Rate Of Oil Diffusion Pump

The pumping speed of the oil diffusion pump remains unchanged within a wide range of inlet pressure. At this time, the pumping speed of the pump is independent of inlet pressure. However, under low and high inlet pressure, the pumping speed of the pump tends to decrease.gas-rate-of-oil-diffusion-pump

In the low inlet pressure range, with the decrease of pressure, the reverse diffusion of the gas from the front stage through the steam jet increases and the pumping speed decreases. In addition, under low inlet pressure, the steam flow from the boiler releases gas and the pump wall release gas also start to affect the pump pumping speed. When the steam condensate returns, the compressed gas dissolves in the condensate and returns to the boiler together, releasing it as the re-vaporized steam returns to the high vacuum nozzle. This part of gas greatly affects the limit pressure of the pump and reduces the pumping speed. When the total amount of gas released by the diffusion gas and steam flow and the gas released by the pump wall is equal to the gas pumped out by the pump, the pumping speed is close to zero.KT_series_oil_diffusion_pump