The paper presents the collaboration between two Romanian national research institutes, which are currently working on deployment of a test device (stand), intended for testing low-head hydraulic turbines. By circulating the water between two superimposed tanks, the stand will maintain, throughout the duration of the test, the flow rate and drop at constant values, necessary for the operation of the tested turbine. The turbine will be located on the bottom of the upper tank, and the flow required for operation will be provided by a pumping group, which ensures constant levels in the two tanks, with preselected values at the beginning of the test and maintained during the test turbines. To maintain a constant head, the pumps will be driven by a system of automatic control of the flow in a closed loop, according to the level set by the operator, by means of a software application, available on a computer associated with the stand. To determine the energy parameters of the turbine, its shaft will be connected to a device for measuring mechanical parameters consisting of an adjustable electromagnetic brake, depending on the supply current, a torque and speed transducer. The recorded values will be integrated into a measurement and data storage system, in the form of a dedicated application, which will run on the same computer. The material presents the preliminary results of designing and implementation of the stand; it will be continued upon completion of the deployment of this test device.

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Aspects Regarding the Design of a Low-Head Hydraulic Turbine Test Stand

  • Teodor Costinel Popescu,
  • Alexandru-Polifron Chiriță,
  • Sergiu Nicolaie,
  • Rareș-Andrei Chihaia

摘要

The paper presents the collaboration between two Romanian national research institutes, which are currently working on deployment of a test device (stand), intended for testing low-head hydraulic turbines. By circulating the water between two superimposed tanks, the stand will maintain, throughout the duration of the test, the flow rate and drop at constant values, necessary for the operation of the tested turbine. The turbine will be located on the bottom of the upper tank, and the flow required for operation will be provided by a pumping group, which ensures constant levels in the two tanks, with preselected values at the beginning of the test and maintained during the test turbines. To maintain a constant head, the pumps will be driven by a system of automatic control of the flow in a closed loop, according to the level set by the operator, by means of a software application, available on a computer associated with the stand. To determine the energy parameters of the turbine, its shaft will be connected to a device for measuring mechanical parameters consisting of an adjustable electromagnetic brake, depending on the supply current, a torque and speed transducer. The recorded values will be integrated into a measurement and data storage system, in the form of a dedicated application, which will run on the same computer. The material presents the preliminary results of designing and implementation of the stand; it will be continued upon completion of the deployment of this test device.