Rotary Vane Experimental Study Of Helical Flow Energy Dissipation Device

Large-scale water conservancy projects, and hydropower, thermal power plants in water, mud and water of long-distance high-voltage power delivery of various materials have to be dependent on the pipeline. The water pressure is a necessary condition of the pipeline can transport liquids, but in reality there are a number of the largest energy pipeline system due to natural conditions of its existence, namely the impact of terrain conditions, the initial head larger than needed for the transmission fluid consumption, which is part of the left excess energy down will not need to produce damage to downstream equipment, leading to unnecessary risks. Therefore, in order to ensure the safety of the pipeline and downstream equipment must study an effective and affordable energy dissipation device, the excess energy is dissipated in the pipeline to go out.This paper discusses the energy dissipation efficiency in order to test the transfer leaves the spiral flow of energy dissipation devices for the main purpose of specific test procedures, discusses the process and its principles can eliminate energy dissipation, and the extension of the same type in the past mentor Yiu Hing done using simple.The plates can be installed energy dissipation compared with each other, and summarizes the advantages and disadvantages of various energy dissipation devices.In this paper, based on scientific data dissipative physical tests and a lot of energy, focusing on the transfer of energy dissipation devices leaf spiral flow stream energy dissipated in the course of each test point pressure distribution and local resistance coefficient test tube studies, analyzes this message principles can dissipate energy devices and energy dissipation efficiency, the main contents include:1At different Reynolds numbers, i.e., at different flow conditions in the pipe, the energy consuming device paddles turn twist angle in different situations, through the pressure load section of the test tubes each analysis type rotary vane. The lower plate opening programs, energy dissipation devices pressure at the size of each component, determine the installation of the rotary vane plate is that the main energy dissipation device dissipation area.2The apparatus of each of the components of the energy effect, and local resistance coefficient by means of this test data to compute the energy dissipation.3The test data were analyzed to determine the effects of rotary vane helical flow energy dissipation effect of energy dissipation device parameters, as well as the influence of these parameters on energy dissipation effect.4Compared to the energy dissipation efficiency rotary vane orifice energy dissipation devices and energy dissipation devices to determine what the two energy dissipation devices more useful and more suitable for realistic pipeline project.Experimental data obtained through the full range of multifaceted analysis, we draw the following conclusions:1) The total energy dissipation efficiency of the rotary vane helical flow energy dissipation device of this study up to85%, this device can be used in engineering practice.2) The test device can be controlled based on the physical parameters of the energy dissipation efficiency change rotary vane plate. Changing the torsion angle turn leaf plates and rotary vane opening angle between the plates, energy dissipation efficiency is different.3) The twist angle of the device efficiency and energy dissipation between the plates is proportional to the rotary vane, rotary vane plate is inversely proportional to the Reynolds number is proportional to the opening angle.4) Of the apparatus main energy dissipation zone in turn is attached to the vane segment, because the water in the transfer vane action also generates only a jet orifice to produce a spiral flow, so that the best energy paragraph.5) The energy dissipating device structure is simple, easy handling, easy to operate.6) The device is similar to its principles than the energy dissipation of energy dissipation devices orifice is more practical, more efficient energy dissipation, should be used to water projects.