steam jet vacuum pump
structure
Ejector （nozzle + sucking ventricular + diffuser）+ condenser + Steam System + Cooling-water System + vacuum line system + Measurement and Control System
working principle of Ejector：
In Figure 1, 1. steam inlet pipe, 2. Nozzle, 3. Sucking ventricular, 4. Physical mode of supersonic air flow sucking gases pumped, 5. Mixed Flow (pressure- boosted by diffusing pipe throat after two flows are mixed and their pressure is equalized). The diffusing pipe is composed of a convergent cone, a throat pipe and a divergent cone, in which the two flows mix.
A. inlet of working steam B. suction inlet of gases pumped C. mixed gases outlet
Package 1（5 - stage pump，pressure of working steam: 0.9MPa G，temperature of cooling water ≤35℃）
Package 2（5 - stage pump，pressure of working steam: 1.2MPa G，temperature of cooling water≤35℃）
Package 3（4 - stage pump，pressure of working steam: 0.9MPa G，temperature of cooling water ≤35℃）
Package 4（4 - stage pump，pressure of working steam: 1.2MPa G，temperature of cooling water ≤35℃）
Package 5（5 - stage pump，pressure of working steam: 0.9MPa G，temperature of cooling water ≤35℃）
Package 6（5 - stage pump，pressure of working steam: 1.2MPa G，temperature of cooling water ≤35℃）
package 7（4- stage pump，pressure of working steam: 0.9MPa G，temperature of cooling water ≤35℃）
Package 8（4 - stage pump，pressure of working steam: 1.2MPa G，temperature of cooling water ≤35℃）
