Dry-compressing screw vacuum pumps and piston compressors

RWTH亚琛大学空气动力学研究所研究三个单独的高速风洞系统，这三个系统至关重要，因为大多数实验测量都是在这些设备中进行的。间歇运行的风洞是基于真空储气罐，从试验段上游的沉淀池气球中吸入空气。为了启动和控制试运行，活塞式压缩机需要向所有控制系统提供压缩空气。抽空四个真空罐的螺杆式压缩机由于近50年的持续运行而遭受着强烈的磨损。因此，空气动力学研究所不能再确保这些设施的安全和持续运行。此外，为风洞控制系统提供压缩空气的三活塞压缩机由于磨损强烈，经常需要较长的维护和维修期，从而产生较长的空闲期。在中期内，所有活塞式压缩机都将无法修复地失效，这将导致空气动力学研究所的所有高速设施发生故障。更换所有螺杆式和活塞式压缩机可确保空气动力学研究所的高速风洞设施、相应的测量系统、所有正在运行的和拟议的研究项目持续、故障安全和环保地运行。

The Aerodynamic Institute of the RWTH Aachen University pursues three individual high-speed wind tunnel systems which are of fundamental importance as the majority of experimental measurements are conducted in these facilities. The intermittently operating wind tunnels are based on a vacuum storage sucking air from a settling reservoir balloon upstream of the test section. To initiate and control test runs, piston compressors are required to supply compressed-air to all control systems.The screw-type compressor evacuating the four vacuum tanks suffers from strong abrasion due to almost fifty years of constant operation. As a result, the Aerodynamic Institute cannot ensure a safe and constant operation of these facilities anymore. Furthermore, the three piston compressor supplying compressed-air to the wind tunnel control system constantly require high maintenance and repair periods due to strong abrasion yielding significant idle periods. In the medium term, all piston compressors will irreparably fail which results in a failure of all high-speed facilities of the Aerodynamic Institute.Solely the replacement of all screw-type and piston compressors ensures a constant, fail-safe and eco-friendly operation of the high-speed wind tunnel facilities of the Aerodynamic Institute, the corresponding measurement systems and all running and proposed research projects.