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 turbineThen 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.
ClaimsDouble 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.
FIELD: hydraulic turbines.
SUBSTANCE: in proposed vane support unit of hydraulic turbine guide assembly including guide vane with journals fitted in bearing housings, stop limiting axial displacement of vane provided to permit rotation owing to contact ring made of corrosion resistant steel. Stop and ring are installed in bearing housing of at least one of vane journals and enclose the journal. Stop is made in form of separate solid ring with antifriction layer.
EFFECT: improved manufacturability and reliability in operation.
8 cl, 8 dwg
FIELD: power industry.
SUBSTANCE: invention relates to a plant intended to convert hydraulic energy to electrical energy or mechanical energy. The plant (I) for conversion of hydraulic energy to electrical energy or to mechanical energy includes a hydraulic turbine (1), a channel (5) for the supply to this turbine of a pressure water flow (E), a channel (8) for the removal of a flow leaving the turbine and guide vanes (20) for the movement of the flow in the removal channel. Each guide vane (20) is movable as to rotational movement relative to an axis (X22) crossing a wall (84) of the removal channel. The plant includes control devices of the guide vane angular position relative to its rotation axis, which include a unit 10 and a servo motor. Each guide vane (20) movable as to rotational movement is retracted into the wall (84) of the removal channel (8). The plant includes a piston that can adjust the submersion of the guide vane (20) into the wall (84).
EFFECT: invention is aimed at the stabilisation of a flow passing through theremoval channel without any decrease of an efficiency coefficient in different modes of the plant operation.
11 cl, 7 dwg
FIELD: machine building.
SUBSTANCE: distributor for turbine contains regulating ring, multiple guide vanes and multiple assemblies to connect guide vanes with the regulating ring. Each of the guide vanes is made with possibility of orientation by means of the regulating ring. Each connecting assembly contains destruction element made with possibility of destruction and detachment of the guide vane from the regulating ring in case of the excessive loads. Each connecting assembly contains device for movement braking of the appropriate guide vane in case of its disconnection from the regulating ring. The brake device contains brake casing and brake part connected with each other by means of the destruction element, and brake pad located between the brake casing and brake part. The brake part is pressed ring surrounding the brake casing and containing element to regulate the pressed ring tightening. The other invention of the group relates to the Francis turbine containing the above distributor.
EFFECT: group of inventions ensures reliable deacceleration of uncontrolled rotation of the free guide vane.
7 cl, 4 dwg
FIELD: machine building.
SUBSTANCE: group of inventions relates to curvilinear channel relating to hydraulic machine, and to distribution assembly for the impeller of the Pelton turbine and hydraulic machine containing such curvilinear channel. The curvilinear channel (2) is intended for flow directing. The curvilinear channel (2) is equipped with ribs (8) secured on its internal wall (22) and containing holes.
EFFECT: group of inventions maximising kinetic energy of the flow in the channel and kinetic energy of the water jet at the channel output.
10 cl, 7 dwg
FIELD: machine building.
SUBSTANCE: multipurpose rotor device contains a rotor with some number of blades along circle, and body of load directing intended for the flow directing of fluid entering the rotor. The body of load directing includes top support element , and bottom support element, located looking each other on their top and bottom sides, and connected with each other such that to install the rotor with possibility of rotation. The device also includes the plates of load directing, configured respectively by blades, and installed with possibility of rotation between the top and bottom support elements in longitudinal direction, and lock pins made on the internal surfaces looking to the top and bottom support elements to monitor angle of turn of the load directing plates.
EFFECT: maximum efficiency of rotation and generation of net energy with high efficiency, without harm for global environment.
23 cl, 31 dwg