Seeking advice on LPG pump components
Thread Content
In the liquefied petroleum gas pump produced by our factory, there is a thin pipeline next to the balance tube, with connections at the front, middle, and back sections of the pump. What is the name of this pipeline? What is its function?
The mechanical seal features self-flushing; the medium flows from the center to the mechanical seals on both sides.
Does it flow from areas of high pressure to areas of low pressure? So the pressure is highest in the middle?
1. The pipeline you’re referring to is the mechanical seal self-flushing pipeline, with the flow direction from the middle to both ends; the experts upstairs have already explained this. I’d like to add that there are flow control orifice plates at the machine seal connections at both ends of the flushing pipeline. For the function of orifice plates, refer to the function of flow-limiting orifice plates at http://bbs.hcbbs.com/thread-1272650-1-1.html (Source: Haichuan Network). 2. Why are the pipes led out from the middle? From my observation, the pump should be a multi-stage pump, with pressure increasing at each stage; the pressure at the last stage is the highest. To prevent damage to the mechanical seal, a pressure level in the middle range is chosen to meet the flushing requirements. 3. The seal flushing method seems to be P52+P11