Method of giving movement to a working wheel and a working wheel of hydroturbine

FIELD: machine engineering.

SUBSTANCE: method of giving movement to the impeller consists in forming the main torque using the reaction of the inflowing fluid when the flow interacts with the main blades 5 arranged by the convex side to the flow and as much as possible changing its radial direction and the additional torque using an outflow liquid with further interaction of the flow with additional blades located concave sides to the flow.

EFFECT: increase in the efficiency of the hydroturbine due to additional energy extraction from the liquid at the outlet of the impeller.

2 cl, 8 dwg

 



 

Same patents:

FIELD: power industry.

SUBSTANCE: group of inventions relates to a device for generation of energy from fluid medium and to a blade used in it, and can be used in particular in wind generators. A blade for the device for energy generation from fluid medium includes a guide surface inside which fluid medium shall move to rotate the blade about rotation axis Xo that together with axes Yo, Zo forms an orthogonal system of coordinates Xo, Yo, Zo. The above blade is restricted with front edge (4) and rear edge (5), constricted between front edge (4) and rear edge (5) and passes along midline (10). Projection of midline (10) onto plane Xo, Yo has the first curvature. Plane Xo, Yo is formed with a possibility of containing midline (10) at front edge (4).

EFFECT: group of inventions is aimed at improvement of output power of an energy generation device.

15 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: universal rotor is referred to machine building, in particular, to the production of rotors for windmills, hydroturbines, screw propellers, fans and aircrafts. A universal rotor comprises at least two bow-shaped blades which are set around the rotor rotation axis 3 and each of them is connected to a fastener installed along the rotor rotation axis 3. The generatrix of the cambered side surface 1 of the bow-shaped blade is located close to the plane parallel to the rotor rotation axis 3. The upper edge of the cambered side surface 1 of the bow-shaped blade is connected with the edge of the concave side surface 2 of the bow-shaped blade. The concave surface 2 of the bow-shaped blade without sharp bends and corners is inclined from the rotor rotation axis in the direction to the base of this blade. The edge of the concave side surface 2 of the bow-shaped blade is connected with the upper edge of the cambered side surface 1 of the bow-shaped blade at an angle. The opposite edge of the concave side surface 2 of the bow-shaped blade is connected with the cambered side surface 1 of the adjoining bow-shaped blade at an angle.

EFFECT: invention is aimed at the reduction of energy flow's energy losses.

2 dwg

Rotor device // 2531159

FIELD: machine building.

SUBSTANCE: invention relates to technologies and devices of conversion and generation of kinetic energy of gas and fluid flows into mechanical and formation of flows from energy mechanism driving. The rotary device contains a barrel 4, rigidly fastened on the power takeoff shaft, vanes 8-11, in pairs fixed on the shafts 5, 6. The shafts 5, 6 are designed with a possibility of independent from each other rotation around of own longitudinal axes. The drum 4 is placed in the body 1, containing a spheric ring part and end surfaces containing a section, made as a truncated cone fixed with a wide base with edges of spheric parts of the body 1. The narrow base is placed in a cavity of the spheric part of the body 1 and is equipped with a round plate placed in parallel to ends of the drum 4, with a hole, through which the power takeoff shaft passes with a possibility of rotation. Vanes 8-11 have the axisymmetric shape. The cross-section of the cavity of the body 1 is overlapped with a partition fastened with an internal spheric surface of the body 1 and side conic surfaces of its end parts. The partition with a transversal slot is designed with a possibility for the vane 8-11 to pass through it, which is unfolded in a diameter plain of the spherical part of the body 1.

EFFECT: invention is aimed at increase of completeness of flow conversion into mechanical energy.

2 cl, 4 dwg

FIELD: power engineering.

SUBSTANCE: invention is related to the field of hydroelectric generation of power. A spherical turbine 96 is made for rotation in transverse direction in a cylindrical pipe under action of a working substance flowing through the pipe in any direction. The turbine 96 is in working condition connected with a rotary machine or generator for power generation. In one example of realisation the blades 112, 114, 116, 118 of the spherical turbine 96 are arched approximately by 180 degrees in the plane, which is inclined at the angle relative to the axis of rotation of a central shaft 64. In the other example of realisation inside the cylindrical pipe there is a deflector along the upstream of the spherical turbine 96 to control the flow via the spherical turbine 96 by screening of the part of this flow.

EFFECT: blades 112, 114, 116, 118 of the spherical turbine 96 have in cross section an aerodynamic profile for optimisation of hydrodynamic flow, to minimise cavitation and to maximise axial energy conversion into rotation energy.

28 cl, 7 dwg

FIELD: machine building.

SUBSTANCE: hydraulic machine Francis-type wheel 1 has outer rim with symmetrical rotation about wheel central axis, inner rim 4 with symmetrical rotation about said axis and multiple vanes arranged between said rims. Wheel 1 comprises at least two elements to define, at least partially, outer rim 6 and/or two elements to define, at least partially, said inner rim 4. At least one edge of vane 2 is fitted between two said elements.

EFFECT: improved manufacturability, sufficient quality.

9 cl, 7 dwg

FIELD: power engineering.

SUBSTANCE: turbine plant comprises a blading 11, which includes curved blades, an inner end of each one is closed in a cavity 14, open at one side; and a generator 20, arranged in the cavity 14 and connected with the blading 11. Each curved blade has a dynamic structure and is made as capable of increase in size under action of hydrostatic pressure and with the capability of compression under action of counterpressure.

EFFECT: simplified design and efficient operation.

2 cl, 7 dwg

FIELD: machine building.

SUBSTANCE: invention relates to an impeller for a directly connected low-speed small hydraulic turbine of diagonal type, used in a hydrodynamic power-saving cooling tower, which comprises an upper crown, a lower ring and blades with bent surface, installed between the upper crown and the lower ring. The ratio of the height h of the edge 4 of water inlet of each blade to the diameter D1, corresponding to the edge 4 of water inlet makes 0.18-0.22. The ratio of the total height of blades H to the diameter D1 makes 0.35-0.42. The ratio of the diameter D2, corresponding to the point A of crossing of each edge 4 of the water outlet and the lower ring, to the diameter D1 makes 0.4-0.6. The ratio of the diameter D3, corresponding to the point B of crossing of each edge 4 of water inlet and the upper crown to the diameter D1 makes 0.3-0.45. The ratio of the diameter D4 in the position of the round platform of water drainage on the upper crown to the diameter D1 makes 0.1-0.2. The diameter D1 and frequency of rotation of cooling fan blades are related according to certain dependence.

EFFECT: provision of simple design, convenience in development and installation and high efficiency of energy conversion.

2 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: impeller of Francis type includes rim 1 with rotation symmetry about rotation axis Z of impeller and bent blades 21, 22, which are rigidly attached to rim 1, each of which includes external peripheral edge 212, 222 and internal central edge 211, 221. Connection points B21, B22 of rim 1 with internal central edges 211, 221 of blades 21, 22 are located on one and the same circle C20 centred relative to above mentioned axis Z. Connection points A21, A22 of rim 1 with external peripheral edges 212, 222 of blades 21, 22 are located at least on two different circles C21, C22 centred relative to axis Z.

EFFECT: reduction of the cost of composite elements of devices owing to limiting their dimensions by reducing the action on them of radial stresses under unsteady conditions.

11 cl, 4 dwg

FIELD: power industry.

SUBSTANCE: store of energy created with wind force includes sufficient amount of energy to meet the demands of the whole mankind. The invention represents effective device supplying this energy store for practical use. On rotating drive shaft 3 there installed is a pair of shaped parts 1, 2 of convex and concave profile, open V-shaped profile with rounded top, which reverses its orientation through 180 degrees, i.e. it is rotated from convex state to concave state. Drive shaft is rotated through 180 degrees. Circular movement of water, which takes place in the wave, effectively brings into operation such turbine, while the wave dies away. Pair of concave and convex shaped parts 1, 2 is spirally spread about drive shaft 3, by means of which the streams in all directions, which come into contact with pair of shaped parts, create the torque moment.

EFFECT: improving the use efficiency of streams and multidirectional oscillatory movements occurring in waves.

25 cl, 20 dwg

FIELD: power industry.

SUBSTANCE: hydraulic turbine of immersion type includes rotor 20, housing-stator that is integrated into rotor 20 and electricity generating means. Rotor 20 has outer rim 22 that encircles the blades 21. There is one or more floating chambers 60 located in outer rim.

EFFECT: rotor weight reduction for floating obtaining.

6 dwg

FIELD: machine building.

SUBSTANCE: group of inventions relates to the impeller of Francis impeller for the hydraulic machine through which the forced water flow shall pass. The Francis impeller for the hydraulic machine contains rim (1) with symmetrical rotation around the rotation axis (Z) of the impeller, ceiling (12) and multiple bent blades (21) secured with rim (1) and ceiling (12), each of them has peripherical edge (212). Edge (212) of at least one of the blades (21) is bent and its concavity looks outside the impeller. Distance measured between any point of the edge (212) and straight line passing from one side through first point of interface between the edge (212) and rim (1), and from the other side through the second point of interface between the edge (212) and ceiling (12) is maximum at level of the intermediate point of the edge (212). Radius of the intermediate point is strictly lower the radius of first interface point and radius of second interface point.

EFFECT: invention designs the impeller which geometry ensure stabilisation of the impeller rotation speed during transient start-up phases at relatively low fall heights.

15 cl, 10 dwg

FIELD: machine building.

SUBSTANCE: hydraulic machine comprises wheel fitted on shaft, both running about axis X5. Hydrostatic or hydrodynamic bearing 100 with water lubrication is composed of shaft radial peripheral surface 52 on one side and on the opposite side by inner radial surface 102 of member 101 fixed relative to said axis. Said bearing is arranged between two edges 121 and 122 to make water film removal zones created in standard operation of bearing 100. Said fixed member 101 has cavity 130 exposed to its inner radial surface 102 nearby bearing first edge 121 of said first and second edges 121, 122. Said fixed member comprises means 131, 132, 133 to communicate said cavities with those outside the bearing 100, nearby second edge 122. Said cavity 130 and said means 131, 132, 133 can remove flow parts that form water film in case removal of water film at the level of said first edge is impossible.

EFFECT: reliable operation of the bearing.

14 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: proposed turbine comprises helical water intake case 1, mount ring 2 furnished with one row of guide vanes arranged in circle, impeller 12, straight convergent water discharge pipe 9 and lateral water discharge box 10. Said ring 2 is arranged at inner side of case 1. Ware outlet between guide vanes in ring 2 is communicated with water inlet formed between vanes 4 with curved surface. Water outlet formed between vanes 4 with curved surface is communicated with inlet of pipe 9. Outlet of said pipe is communicated with water inlet of box 10. seat 6 is arranged at impeller 12. Shaft 7 is fitted in seat 6. Blades of cooling fan are fitted directly on shaft 7. Unit designed rpm is defined by design equation and depends upon impeller water inlet diameter and water inlet pressure.

EFFECT: compact design, high efficiency and lower noise.

7 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: impeller of Francis type includes rim 1 with rotation symmetry about rotation axis Z of impeller and bent blades 21, 22, which are rigidly attached to rim 1, each of which includes external peripheral edge 212, 222 and internal central edge 211, 221. Connection points B21, B22 of rim 1 with internal central edges 211, 221 of blades 21, 22 are located on one and the same circle C20 centred relative to above mentioned axis Z. Connection points A21, A22 of rim 1 with external peripheral edges 212, 222 of blades 21, 22 are located at least on two different circles C21, C22 centred relative to axis Z.

EFFECT: reduction of the cost of composite elements of devices owing to limiting their dimensions by reducing the action on them of radial stresses under unsteady conditions.

11 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: hydraulic machine comprises an inner and an outer separating circular hydrodynamic seals 8 and 9, arranged into each or one of cavities around an impeller 2 - between the impeller 2 and a cover 5 and between the impeller 2 and a foundation ring 6. The outer separating seal 8 is located in the area of the peripheral zone of the impeller 2, and the inner one 9 - between the outer separating seal 8 and a seal 7, which limits leaks into a suction pipe. Two rings 10 and 11, which form the inner separating seal 9, have a Z-shaped or an angular profile in the cross section and are installed so that free shelves of their cross sections cover each other. Each cavity, where separating seals 8 and 9 are installed, is separated into two chambers 12 and 14. The external chamber 14 is equipped with an input 17 for compressed gas supply.

EFFECT: invention provides for squeezing out water from the peripheral zone of the impeller during operation of the hydraulic machine in the turbine or pump mode and reduction of energy losses for disc friction.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: blade system of impeller of radial axial hydraulic turbine includes rim 1, hub 2 and blades 3, each of which is connected to rim 1 and hub 2 and provided with inlet and outlet edges 4 and 5 of bent shape and smoothly changing thickness in the direction from inlet edge to outlet edge and from hub 2 to rim 1. Blades 3 of blade system have thickened part near inlet edge 4. Maximum thickness of blade 3 in its section with hub 2 is more than maximum thickness of blade 3 in its section with rim 1. Optimum intervals of values of parameters are determined: maximum thickness of section of blade 3 with hub 2, maximum thickness of section of blade 3 with rim 1, as well as their location places along straightened middle line of the appropriate section.

EFFECT: preventing flow separation after inlet edges of blades at operation of hydraulic turbine in modes with increased heads and modes with partial loads in the whole range of working heads.

10 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed Francis turbine wheel comprises at least two wheel segments 12, 14 that can be jointed together along their opposed surface sections 16, 16a, 18, 18a to make composite wheel with top rim 28, bottom rim 30 and multiple vanes 32 running between said rims and secured thereto. Said opposed surface sections 16, 16a, 18, 18a are arranged solely along top and bottom rim segments. Note that opposed surface sections 16, 16a, 18, 18a of wheel segments 12, 14 are arranged between apart from adjacent vanes. Proposed wheel has central axis. Top rim has central round bore. Opposed surface sections 16, 16a of top rim, if seen from above, run from central bore, radially offset from central axis.

EFFECT: higher reliability and longer life.

7 cl, 2 dwg

FIELD: turbine engineering.

SUBSTANCE: blade system comprises blades whose inlet and outlet edges are made so that the working section of the inlet blade edge adjacent to the hub prevents against cavitation.

EFFECT: enhanced efficiency and reliability.

2 cl, 5 dwg

FIELD: hydraulic engineering.

SUBSTANCE: invention is designed for use on hydroelectric power stations with insignificant fluctuation of lower pond level at high head and water flow ranges. According to invention, vertical shaft of set rest through lower end with cone-shaped working surface of frame-step bearing. Pan is hermetically attached to shaft and working wheel, and suction pipes are attached tangentially to pan. Jets from suction pipes are directed to blades of active wheel freely rotating on shaft and transmitting to shaft rotation through speed-up and direction-change reduction gear, parts of which being parts of hydraulic set. Number of pipes is equal to number of blades. Jet are directed to working surfaces of blades under constant effective angle of action. Seals of reaction wheel are made by elastic box-shaped rings contacting through convex side surfaces from opposite sides exposed to pressure of water. Delivery of water to seal from bottom to top prevents getting of solid particles between friction surfaces.

EFFECT: increased speed and efficiency.

5 dwg

FIELD: hydroelectric stations and hydraulic drives.

SUBSTANCE: proposed device has blades with cylindrical surfaces arranged between rims. Generatrix of cylindrical surfaces is parallel to axis of hydraulic turbine and rises to axis of hydraulic turbine. Shape of blade of wheel is formed by angle of tilting of skeleton line of blade profile passing from larger part of blade profile changing according to linear dependence to constant profile on the rest of part and selection of parameters of wheel from the following relations: change of β according to linear dependence from β1 to β2 on larger part of blade profile at distance from D1 to 1.01D2, β=const=β2 on the rest part from 1.01D2 to D2, range of rise of generatrix of blade surfaces from (0.08-0.20)D1 at liquid inlet to wheel to (0.15-0.30)D1 at outlet from wheel, D2/D1=(0.6-0.73) where D1 is outer diameter of wheel; D2 is inner diameter of wheel; D2/D1 is relative diameter of wheel; β is angle of tilting of skeleton line of blade profile; β1 is angle of tilting of inlet element of skeleton line of blade profile to circumferential direction; β2 is angle of tilting of outlet element of blade skeleton line.

EFFECT: enlarged range of operation of Francis turbine.

2 dwg

Turbine // 2263814

FIELD: mechanical engineering; turbines.

SUBSTANCE: turbine is designed for converting kinetic energy of liquid or gas into mechanical work. Proposed turbine contains cylindrical housing, tangential intake branch pipe arranged over periphery of housing and axial discharge branch pipe arranged in center, and rotor installed on shaft. Rotor is made in form of sup closed at one end. Tangential intake branch pipe is furnished with axial spiral guide member to provide tangential delivery of working medium to cup wall near its open end face. Axial discharge branch pipe is arranged with its inlet hole in cup space. Intake branch pipe is rectangular in section, and discharge branch pipe is round.

EFFECT: simplified design of turbine.

2 cl, 2 dwg

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