蒸汽喷射真空泵的影响因素及测试罩的应用

实际生产中的影响因素很多 ,诸如蒸汽压力、蒸汽干燥度、冷却水量、冷却水温、冷却水喷嘴堵塞、真空泵泄漏、拉瓦尔蒸汽喷嘴堵塞、泵前工艺设备冷却效果不好等等。但主要的是冷却量、拉瓦尔蒸汽喷嘴和泵前工艺设备的冷却。测试罩安装在真空泵的吸入真空管道上 ,在测试罩上选择不同直径的空气流量喷嘴 ,可以测得真空泵的空气流量喷嘴、抽气量、真空度之间的关系 ,从而可指导正确操作。

Effect factors of steam spray vacuum pump and the application of measuring hood

There are many effect factors in real production, such as steam pressure, steam drying degree, cooling water quantity, cooling water temperature, cooling water nozzle occlusion, vacuum pump leakage, Raoult steam nozzle leakage, cooling effect of the process equipment in front of the pump is not good. But the main problems are the cooling capacity, cooling of Raoult steam nozzle and process equipment in front of the pump. The measuring hood is installationed in the suction vacuum pipe of vacuum pump. Steam flow nozzles with different diameter are selected on the measuring hood so that the relation among steam flow nozzle ,off-gas quantity, vacuum degree can be measured, the correct operation can be directed.