The plate heat exchanger consists of a group of herringbone corrugated metal plates. There are four corner holes on the board for the passage of hot and cold media. When the heat exchanger is assembled, the A plate and the B plate are alternately arranged to form a mesh channel, and the sealing gasket seals the cold and hot medium in the heat exchanger. The thin oil station uses two oil pumps (one used and one standby) to supply oil to the lubricated parts. The main components are oil pump, one-way valve, safety valve, filter, plate heat exchanger, oil tank and oil supply pipeline. The role of the plate heat exchanger in the thin oil station system is to reduce the working temperature of the lubricating oil to ensure the normal operation of the system.
(1) The oil temperature of lubricating oil is generally set between 42°C and 45°C. When the temperature is high, the cooling water needs to be automatically turned on, and the cooling water is automatically turned off when the temperature reaches the normal temperature. These tasks all rely on the cooling performance of the plate heat exchanger itself.
(2) Compared with water, oil is relatively poor in viscosity and flow rate. In the thin oil station system, the advantages of some old shell and tube heat exchangers are not as obvious as those of plate coolers. The shell-and-tube heat exchanger is cooled by a certain number of copper tubes, with a minimum thickness of 0.8-1.2mm. The plate heat exchanger transfers heat through the partition wall between the plates, the thickness is only 0.5mm, and the heat transfer efficiency is 3-5 times that of the shell and tube.