The Study On The Oil Supply System In The Nature Gas Scroll Compressors

As a new high performance,high effficiency,low noise and high reliability positive displacement device,the scroll compressor has many advantages compared with other types of compressor,especially in smaller displacement volume and smaller power compressor,the scroll compressor has high performance.It has been more used in lots of areas,for example:air conditioning,power engineering,petrolchemical areas.Its researches has more attached by the researchers now.The scroll compressor is one of the important equipments in the Nature Gas Scroll Compressors,the oil supply system is very importent to the scroll compressor.The scroll compressor's friction,leakge,seal,mechanical seal connected with the oil supply system,so it affect the performance of the Nature Gas Scroll Compressors.In this paper,Analysed the compose of the friction pairs and its friction force from the dynamics'theory,accounted the power consume of the friction pairs.To the biggest power consume which in the contacts state top teeth between the oribiting and fixed scroll plates.useing the average Reynolds equation received the oil film pressure and the oil film shearing strength in different shaft speed.Constructed the leakage modle in scroll compressor,and gived the criterion which can determine the medium'state,so it can be close to the fact,and concluded the formula of the quantity of the leakage.Analysed the oil lubrication scroll compressor's seal mechanism and what can affecet its seal performance,this can provide the theory for how to minish the leakage enough and how to increase the seal effect.The temperature field of double faces mechanical seal is analyzed using software ANSYS.Discussing the affect of the variable axis's peed and the variable lubricating oil temperature on the seal's end face temperature field separately.Concluded the quantity of heat distribution between the mobile loop and the immobile loop,and qualitative analysed the friction's quantity of heat of the double faces mechanical seal.According to the theories of lubricating and hydrodynamics,constructed the model of rate of flow of lubrication.Using the equivalence circuit method predigest the model of the rate of flow of lubrication.Concluded formula of the power consume in the oil supply system of the scroll compressor.Calculated the important assistant equipment's resistance consume. The design is for how to select the electromotor and the gear-driven pump.A test scroll compressor is designed and developed,the test results agreed with the theory.For developing the Nature Gas Scroll Compressors,this paper proposed how to improve the equipment's performance.