The role of heat exchanger lubrication

 The heat exchanger is a new type of high efficiency heat exchanger which is composed of a series of metal sheets with a certain corrugated shape. Heat exchanger is formed by forming a thin rectangular channel between plates. Plate heat exchanger is an ideal equipment for heat exchange between liquid and liquid. The utility model has the advantages of high heat transfer efficiency, small heat loss, compact structure, light weight, small occupation area, convenient installation and cleaning, wide application, long service life, etc.. Under the same pressure loss, the heat transfer coefficient is times higher than that of the tubular heat exchanger, and the area of the heat exchanger is about 1/3 of the heat exchanger, and the heat recovery rate can be as high as more than 90%.
                                                
     The plate heat exchanger in the lubricating system is an important part of the steam turbine unit, because the oil in the circulation process, absorption of the bearing at the friction heat, the temperature rising, in order to ensure the safe and reliable operation of the unit. The oil temperature must be controlled within the specified range (the maximum not more than 60-65 degrees Celsius, not less than 35-40 DEG C) temperature is too high may be bearing and other parts overheating and damage. And will reduce the use of lubricating oil, the temperature is too low will increase the viscosity of lubricating oil, increase friction consumption, and even the purpose of the machine vibration. Therefore, the use of plate heat exchanger through regulating the flow of cooling water to reduce the purpose of lubricating oil temperature.