Double hydraulic turbine

 

The device is designed to convert the flow energy of water into mechanical work. The turbine contains vodopada, a guiding apparatus, a device controlling the flow of water and the impeller, the blades of which are made in the form of cylindrical shells mounted on the disks. The guide device is made in the form of a flat blade set at an angle 4-12oto the tangent of the circle forming the blade at the location of its input edges. The device controlling the flow of water supplied by the actuator, providing the flow rate from zero to the maximum value. Design double hydraulic turbine can improve its efficiency. 2 Il.

The invention relates to the field of power engineering and can be used when developing the designs of turbines. Known design double turbine (Banks) containing vodopada, impeller with blades made in the form of cylindrical shells, and the guide apparatus. /A. I. Sokolov. The use of water and energy. M: Symptoms, 1953, S. 49, Fig. 43-6/. The latter represents the nozzle formed by the flat surfaces with a rectangular cross-section, bespeak, and regulation of water flow was carried out using a flat plate. Turbine is in principle belongs to the class of active turbines. The maximum efficiency of the turbine does not exceed 60-70%.

Because of the low efficiency caused not effective flow part and large energy losses in the regulatory process flow, the use of this type of turbine is not widely spread.

Known also design two turbines, developed by the German firm Ossberger, a General description of which is given in U.S. patent A, MCP 7 F 01 D 1/12 from 01.04.1986,

The design contains vodopada and impeller with blades made in the form of cylindrical shells. Profiled vodopada made in the form of avancuara, with an angle of coverage of the blades of the impeller discharge front, large compared to the previously mentioned analog.

In the avankamera device is made in the form of a rotary wing with a profiled cross-section, which serves to partially control the flow of water through the turbine.

At the same time involved in the working process a larger number of blades, the configuration profile vodopada and placed in the avankamera wing of instructions is the lack of regulatory capacity rotary wing turbine water flow from zero to the maximum value.

The main task to be solved by the invention is to increase efficiency of two turbines and improvement of its energy and performance.

The technical result can be achieved by introducing into the design of the turbine guide vanes to create the optimum conditions for the admission of water to the blades of the impeller and used as a device to regulate water flow through the turbine cylindrical radial gates to regulate the water flow from zero to maximum value and does not violate the structure of the flow at any position in the flow part.

Is depicted in Fig.1 the proposed turbine contains a avankamera 1 with a flange 2 for connection avancuara with the power device 3 and the flange 4 for turbine installation and fixing it in the power station building, the guide apparatus 5 with the blades 6, the device controlling the flow of water through the turbine 7, the actuator 8, the impeller 9 with blades 10 and bearing assemblies 11, placed in them by the pins 12 of the turbine shaft 13. Fig.2 gives an idea about the angles of the guide vanes and diffuser channels.

The guide apparatus in the form of flat blades set at an angle 4-12 degrees to the tangent of the circle forming the blade at the location of its input edges, providing optimal conditions for the inlet flow to the blades of the impeller. Device for controlling the flow of water is located between the guide vanes and blades of the impeller and is a cylindrical radial gate, the axis of rotation which is aligned with the axis of rotation of the impeller. The device allows you to adjust the flow rate of water passing through the turbine from zero to its maximum value, with a drive that is located on one of the side walls of avancuara.

The wheel contains disks and fixed on them blades, made in the form of cylindrical shells. Configuration megapath channels formed by the radius of curvature of the blades, their quantity and location, provides optimal from the point of view of energy, the conditions of the flow through the impeller. On the side walls of avancuara are bearing assemblies which are placed in the trunnion shaft of the impeller. The maximum efficiency of the turbine

Then the water should be in the lower reach.

The water flow through the turbine from zero to the maximum value can be adjusted by the device 7 with the actuator 8.

Thus, the guide device generates optimally organized, from the point of view of energy, the flow of water, which, interacting with the blades of the impeller provides high power characteristics of the turbine, and the control unit may perform as a regulating and shut-off functions, greatly improving performance of the turbine.

Claims

Double hydraulic turbine, containing vodopada, a guiding apparatus, a device controlling the flow of water and the impeller, the blades of which are made in the form of zilkic blades, installed at an angle 4-12to the tangent of the circle forming the blade at the location of its input edges, and the turbine is provided with a device for regulating the flow of water from zero to the maximum value with the drive.

 

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