(57) Abstract:The device is designed to convert the energy of the fluid flow into mechanical energy. The rim of the impeller is installed in the annular recess of the body, the adjacent surfaces of which is placed a supporting rollers and the ends of the blades of the impeller freely positioned relative to each other in the Central part of the neck of the impeller. On the outer surface of the rim mounted gear wheel, kinematically connected to the drive shaft. Turbine is compact, easy to manufacture and has high efficiency. 1 C. p. F.-ly, 2 Il. The invention relates to the field of hydro and can be used in axial flow, low-debit, jet propeller turbines for small hydro plants.Known horizontal axial flow turbine, containing the impeller rigidly United with the working shaft, rotating on two points of support and connected with the shaft of the generator. Before throats camera impeller mounted fairing, and in the center of the neckline posted sleeve fixed on the blades of the wheel. The back of the neck set is S-shaped suction pipe, which is working in Known turbine has the following disadvantages. She is able to accommodate a limited number of blades of the impeller (not more than four), as well as placement of the fairing in front of the mouth of the impeller and the S-shaped suction pipe in the back of the neck, causing her placement, significant flow rates in the stream, which reduces the efficiency of the turbine.Known hydraulic unit containing a turbine, comprising a stator, impeller, installed on the shaft sleeve with the fairing on which the fixed blade and the hydraulic pump, where the sleeve is made in the form of a hollow cylinder, and the hydraulic pump is placed in its cavity. (See A. S. USSR N 1020616, F 03 B 13/00, publ. 30.05.83, bull. N 20, The Hydraulic Unit.).In the known unit in the Central part of the neck of the impeller posted sleeve with fairing, which is equipped with blades. This placement of the sleeve and the fairing also increases the flow rates, which reduces the efficiency of the unit.The closest technical solution is used as a prototype, is the device of a turbine, comprising a housing with intake, guide vanes and impeller with blades attached to the inner surface of a vacuum pump driven by the impeller, when connected by pipeline to the cavity between the rim and the casing (See. A. S. USSR N 1645589, MKI F 03 B 11/06, publ. 30.04.91, bull. N 16. The turbine.)
The famous design of the turbine eliminates the placement of some nodes in the neck of the impeller, increasing the flow rates, however, it has the following disadvantages. Execution of a significant gap between the elongated body and the rim requires the constant presence of the vacuum system, equipped with a Venturi tube, which determines the complexity of its manufacture and operation, and requires the additional cost of electricity for operation of the vacuum pump. And accommodation in the Central part of the neck of the fairing also increases the flow rates of the flow. It reduces the efficiency of the turbine and complicates its design.The objective of the invention is to provide a simple, compact turbines with high efficiency by avoiding obstacles in the duct, creating hydrodynamic resistance in the Central part of the neck of the impeller, due to the placement of the blades of the impeller, in the proposed device, on the inner surface of the rim and freely placed them relative to each other in the Central frequent is some resistance.The proposed device turbines improves the efficiency of the turbine by creating in flow path through the fluid with increased flow velocity and dynamic pressure by reducing hydrodynamic resistance generated in the prototype, installed in the Central part of the neck of the impeller of the fairing vanes connected to each other in the Central part of the cap and installation of Venturi vacuum system.The solution of this problem is achieved by the fact that the device turbines, comprising a fixed housing, an impeller with blades mounted on the inner surface of the rim, placed in the gap relative to the housing, according to the invention, the rim is placed in the annular recess of the body, the adjacent surfaces of the housing rim posted by support rollers and the ends of the blades of the impeller freely positioned relative to each other in the Central part of the neck of the impeller, the outer surface of the rim mounted gear wheel, kinematically connected to the drive shaft.On the adjacent surfaces of the housing shell mounted supporting rollers on bearings is some whole parts of a whole object, which may themselves be integers and are independent objects with their functions, so in isolation from the other parts (signs), they are not classified, and the set of features described in the characterizing part of the formula, was not found in the known technical solutions, so the proposed solution meets the requirement of "inventive step".The proposed turbines, in which the rim is placed in the annular recess of the casing and resting on the supporting rollers mounted on adjacent surfaces of the housing and the free installation of the ends of the blades of the impeller in the Central part of the neck provides a flow path through the fluid flow with increased flow rate, by reducing the flow rates of the current environment that provides increased efficiency of the turbine. The proposed turbine is compact, easy to manufacture, its design allows you to install a number of several turbine units as longitudinally and transversely of the stream, and operate it at any position in space (horizontal, vertical or inclined flow) without changes in its structure that can be used in small hydropower plants on malanao along a-a in Fig. 1.The turbine includes a fixed housing 1, which consists of two parts, with the annular recess 2 in which is placed the rim 3 of the impeller 4, which is installed rotor blades 5 on the inner surface 6 of the rim 3. The rim 3 is installed in the recess 2 with a gap 7 between the housing 1 and the rim 3 of the impeller 4. On the adjacent surfaces of the housing 1 with the rim 3 posted by support rollers 8, 9 mounted on the bearings 10. The ends of the blades 5 of the impeller 4 is installed freely relative to each other in the Central part of the neck 11 of the impeller 4. On the outer surface 12 of the rim 3 of the impeller 4 is mounted a gear wheel 13, kinematically connected through gears 14 to the drive shaft 15. In the housing 1 with holes 16 for supplying cooling fluid in the recess 2 of the housing 1 for cooling the impeller 4.The turbine operates as follows. Under the pressure of the stream flow impeller 4 rotates and rotates the gear wheel 13, is placed on the outer surface 12 of the rim 3 of the impeller 4. Gear 13 in mesh with the toothed wheel 14, is placed on the drive shaft 15, gives power to the consumer. Through the free flow of liquid passing into the center of the odes, provides increase of pressure, which increases the power of the turbine and allows its use for electricity generation small hydro.The design of the proposed turbines allows you to create individual turbines (turbine units) mobile hydraulic machines for wide streams (cross design with multiple flow paths), and narrow streams (longitudinal, multi-stage design with one, two flow paths) using one working shaft kinematically associated with multiple impellers. This will allow you to achieve maximum utilization of the energy potential of each individual stream.In addition to the use of hydropower, the principle of construction of this turbine can be used to create wind energy devices (with the proper execution and related materials), as well as in industry, for example, when creating a mixing device in a confined space), creating ventilating devices, pumps, pumps-pushers for pumping slurries containing large fractions, when creating a water propulsion for surface or underwater vehicles (boats, the submarine is droturbines are lightweight high-strength plastic with a low coefficient of friction and resist corrosion and destruction from the action of the environment, in which operated. 1. Turbine, comprising a fixed housing, an impeller with blades mounted on the inner surface of the rim, placed with a gap relative to the housing, characterized in that the rim is placed in the annular recess of the body, the adjacent surfaces of the housing rim posted by support rollers and the ends of the blades of the impeller freely positioned relative to each other in the Central part of the neck of the impeller, the outer surface of the rim mounted gear wheel, kinematically connected to the drive shaft.2. Turbine under item 1, characterized in that the adjacent surfaces of the body with the rim mounted supporting rollers on sliding bearings.
FIELD: mechanical engineering.
SUBSTANCE: invention relates to structures of installations for energy conversion of water course of airflow into electrical power. Hydropower installation contains generator 1 and hydrodynamic drive 4, implemented in the form of two sequentially installed screws 7 and 8, implemented with rotation ability into side opposite and connected to generator 1 through conversion facility of rotational movement of two shafts into rotational movement of one shaft, implemented in the form of conic step-up gear 13, installed in inner body 6. Inner body 6 is affixed to external body 5 by means of two wicket gates 23 and 24, provided for spinning of water flow before its supplying to the back screw 8.
EFFECT: invention is directed to increasing of coefficient of efficiency of installation ensured by increasing of back screw coefficient of efficiency.
FIELD: engines and pumps.
SUBSTANCE: invention relates to units designed to convert water flow energy into electric power. Proposed power source comprises generator 1 and hydrodynamic drive 2. Aforesaid birotary generator 1 includes housing 11 and two rotors 12 and 13. Aforesaid hydrodynamic drive 2 represents two coaxial screws 3 and 4 fitted on shafts 7 and 8 on both faces of generator 1. Power source incorporates rotation converter and two auger-type turbines 5 and 6 arranged concentric with housing 11. Screws 3 and 4 and auger-type turbines 5 and 6 are linked with inner and outer shafts 7 and 9, respectively, and, via rotation converter, with rotors 12 and 13 of generator 1.
EFFECT: higher efficiency, reduced sizes at increased power.
7 cl, 6 dwg
FIELD: power engineering.
SUBSTANCE: invention is related to designs of plants for transformation of air flow water course energy into electric energy. Hydropower plant comprises generator 1 and hydrodynamic drive 2, arranged in the form of two coaxially installed screws 5 and 6, which are arranged, in their turn, with the possibility of rotation in opposite directions and connected with generator 1 via facility of two shafts rotary motion transformation into rotary motion of single shaft. Transformation facility is arranged in the form of differential planetary multiplier. Generator 1 and transformation facility are installed in body 17, having joint 18, located in vertical plane, passing through center of masses, fixed on stand 19 and providing for possibility of rotation in horizontal and vertical planes, and cavity of generator 1 is sealed and filled with lubricating liquid and communicated to pressure compensator 21, which consists of cylinder 22 and spring-loaded piston 23.
EFFECT: invention is aimed at increase of plant efficient factor with reduction of its dimensions and simultaneous increase of power.
7 cl, 2 dwg
FIELD: power engineering.
SUBSTANCE: hydrogenerator comprises electric generator 1 and hydrodynamic drive 2. Electric generator 1 is arranged as birotary in the form of cylindrical body 3 with excitation winding 6 inside of it and external and internal rotors 4 and 5. Hydrodynamic drive 2 is arranged in the form of two coaxially installed turbines 9 and 10, one of which is installed on external surface of external rotor 4, and the second one - on internal rotor 5. Electric generator 1 is equipped with magnets 7 and 8, installed on external and internal rotors 4 and 5, located accordingly inside and outside body 3. Turbines 9 and 19 are arranged as auger, the second of which is installed on internal surface of internal rotor 5.
EFFECT: higher efficiency factor of plant with reduction of its dimensions and simultaneous increase of power.
5 cl, 3 dwg
FIELD: power engineering.
SUBSTANCE: source of energy comprises electric generator 1, arranged as birotary with internal and external rotors 5 and 4 and hydrodynamic drive 2 with internal and external shafts 13 and 12 of drive. On external rotor 4 of electric generator 1 there are stages of working blades 14 installed, between which here are stages of opposite rotation working blades 16 installed, being connected to internal rotor 5 of electric generator, through magnetic couplings 17, number of which corresponds to number of stages of opposite rotation working blades 16.
EFFECT: increased efficiency of plant with reduction of its size and simultaneous increase of power.
4 cl, 5 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to designs of plants designed to convert water current energy into electric power. Proposed hydro-generator driven by sea current comprises hydrodynamic drive 2 and electric birotary generator 1 made up of housing 3, outer and inner rotors 4 and 5. Inner rotor 5 is arranged inside said housing 2. Hydrodynamic drive 2 represents blades 9 radially fitted on outer surface of outer rotor 4 and is mounted in casing 19 furnished with inlet and outlet branch popes. Housing 3 and casing 19 represents cylindrical structures. Outer rotor 4 seats outside housing 3. Rotors 4 and 5 are coupled via reduction gear 12 comprising driven gear 13 in mesh with outer rotor 4, idle gears 14 and drive gear 16 in mesh with inner rotor 5 to ensure counter rotation of rotors 4 and 5.
EFFECT: higher efficiency, reduced sizes and increased power output.
2 cl, 2 dwg
FIELD: engines and pumps.
SUBSTANCE: proposed hydraulic turbine comprises cylindrical section-modular housing 1 with vane-screw rigidly fixed on the shaft and appliance to secure the vanes to the housing that allows the shaft rotation. Each section accommodates vane-screw. All vanes feature identical curvature to provide for constant flow rate and synchronous operation of all vane-screws. Attachment mechanism is arranged on opposite side of vane-screw relative to flow direction. Turbine incorporates flow stabilisers made up of metal sheets with their one rib secured to housing 1 and their plane oriented along the radius towards the shaft along housing 1 to stabilise the flow coming from one vane-screw to the other.
EFFECT: simple design and operation, higher output and efficiency, longer life, reduced production costs.
FIELD: engines and pumps.
SUBSTANCE: unit is intended to be used at derivational and reservoired HPP with inconsiderable vibration of after-bay level with wide ranges of water head and flow rate. Lower end of vertical shaft of the unit with operating spherical surface is borne against the centre plate. Cone-shaped tray is rigidly attached to the shaft and impeller. Outlet tubes with variable and fixed cross section area are tangentially attached to the above cone-shaped tray. One end of bent vanes is fixed in the guide vanes in external rim and the opposite end is attached to the rim which envelops the shaft. Vanes are made at a tangent to outlet section plane. Upper rib of vane is oriented in radial plane and inclined from internal rim to external rim, and lower rib is oriented horizontally. Seal of the impeller consists of two flexible elastic rings with the chute profile the bottom of which faces the top. Some sides of those are tightly attached to the sealed parts and the opposite convex sides contact each other. Centrifugal water flow regulator includes balancing levers, rods and a slide on the unit shaft, and it is arranged in protection casing in the flowing water flow.
EFFECT: use of the unit contributes to increase in the power, efficiency and high speed, and allows simplifying, cheapening and accelerating the HPP construction.
7 cl, 17 dwg
FIELD: machine building.
SUBSTANCE: proposed system comprises rotor assembly with axial symmetry about rotational axis and features rotor end face located upstream, turbine shroud ring 102 housing, at least, part of rotor assembly and ejector ring 128 housing, at least, part of said turbine shroud ring 102. Said turbine shroud ring has inlet and outlet. Said turbine shroud ring outlet 117 comprises multiple elements turbine shroud ring mixer and features noncircular cross-section. Ejector ring 128 comprises inlet and outlet.
EFFECT: higher output and efficiency.
15 cl, 35 dwg
FIELD: power industry.
SUBSTANCE: in method of moving flow impact on screw of wind or hydraulic motor the kinetic energy of moving flow having constant velocity is converted to alternating pulse flow that is applied to the screw at transient processes, at occurrence of inertia properties of the flow, at mechanical resonance. In the device implementing the above method the smallest section of pipe channel 4 arranges slot-screw group consisting of coaxial slot-type fairing disc 1 with fairings, control slot-type disc 2 and screw 3. When the slots are fully open, screw 3 blades form together with fairings a wing airfoil. Slot-screw group for control of screw 3 rotation frequency changes the size of slots by rotating control slot-type disc 2.
EFFECT: increasing the conversion efficiency of kinetic energy of moving constant flow to mechanical energy of rotating screw.
2 cl, 11 dwg