Hydraulic turbine

FIELD: power engineering.

SUBSTANCE: this turbine comprises water duct 1 connected with top and bottom cases 3 and 6 accommodating impeller 2 with buckets 4 arranged regularly at the disc and made of two identical all-in-one metal sheets to produce the angle smaller than 180 degrees there between and stiffness rib on opposite side. Through hole is made at the centre of every sheet. Turbine impeller 2 shaft 5 is arranged on LH and RH interconnected stator column reinforced concrete supports. Stator sealing walls, inner surfaces of cases 3 and 6 and rings 11 secured at stator columns to cover the disc of impeller 2 form the toroid rectangular section channel.

EFFECT: simple and reliable high output turbine, longer life.

5 dwg

 

The invention relates to hydroelectric power, namely the production of electrical energy.

The known device according to the patent RU 2162914 most closely suited to the proposed solution.

The known device includes penstock with water intake in the river and bolt. Penstock has a slope that is smaller than the slope of the bottom of the river, and connects the intake with an intermediate reservoir from which originates penstock impulse turbine connected with the shaft of the generator. In the intermediate tank between the input pressure conduit and the inlet conduit of the turbine installed damper flow executed in the form of a wall with openings. Each bucket of the turbine wheel in the form of two diverging angle bent gutters and fixed on the impeller can be rotated around the axis of its mounting. The known device allows to reduce the capacity of the intermediate surge tank without disturbing the process of filling and emptying and increase the efficiency of active Pelton turbines when used to generate electricity from small rivers.

The disadvantages of the known devices is the presence of intermediate surge tank, the presence nozzle water supply system and of the stator flux, which moves the buckets, overcoming the resistance of the water.

W�the country of the invention is to eliminate the above drawbacks and to develop the design of the flow path of the turbine, and turbine wheel and bucket with reference to the flow path.

The essence of the proposed device is that the turbine includes a conduit connected to the upper and lower housings, which are located inside the impeller, installed evenly on the disk buckets made of a permanently-connected two identical metal sheets to form between them an angle less than 180° and ribs on the opposite side, and in the center of each sheet is a through hole, and the shaft of the turbine wheel is located on the right and left fixed to a reinforced concrete supports of the columns of the stator, the sealing wall whose inner surface of the casing and the ring, secured to the columns of the stator and the end disc of the wheel, forming the channel of rectangular cross section of the toroid.

The device is illustrated by the following drawings:

Fig.1 - diagram of the hydraulic turbine installation;

Fig.2 - a section a-A in Fig.1;

Fig.3 - connection diagram of buckets with impeller;

Fig.4 - d view of Fig.2;

Fig.5 - type In Fig.2.

The inventive device consists of the following elements:

Fig.1-2 presents: 1 - conduit, 2 - turbine impeller 3 - upper shroud of the impeller, 4 - bucket, 5 - impeller shaft, 6 - lower housing 7 - the left column of the stator 8 to the right of the colon �the commutator 9 - sealing wall, 10 - fencing of the spillway, 11 - ring.

Fig.3-5 presents: 12 - joint pin.

The device operates as follows. Water from the reservoir through the conduit 1 to the impeller of the turbine and it is available in the downstream.

In the driving wheel 2 (Fig.1-2) turbine energy of water is converted into mechanical energy of rotation of the impeller 5, which is rotated by the rotor of a generator that converts mechanical energy into electrical energy (figure not shown).

The main elements of the turbine installations are the turbine wheel 2 mounted on the impeller shaft 5 and rotating between the housings 3 and 6, covering the impeller from the outside, and rings 11 on the inner side that cover the surface of the disk impeller. The impeller 2 is mounted above the water level downstream.

The impeller 2 (Fig.1-2) consists of a disk with 4 buckets. The working surface of the bucket 4 (see Fig.3-5) is made of two identical sheets connected at an angle less than 180°, with formation at the junction of the ribs. To connect bucket with impeller serves as a pin 12 that is welded to the edge at the junction of the sheets perpendicular to the edge. The buckets are mounted uniformly on the circumference of the wheel.

Between the housings 3 and 6, uplo�additional walls 9 and the rings 11, attached to the columns of the stator, creating a channel of rectangular cross section for the passage of the bucket 4. In the case of a jet on the working surface of the bucket 4 converts the energy of water into mechanical energy of rotation of the impeller 2 of the turbine. Water entering from the conduit to the working surface of the bucket moves with it to the spillway.

For removal of excess water in the buckets are provided through the holes located in the Central part of its constituent sheets. When the ejection of water to the spillway stiffener bucket 4 cuts the flow of water, reducing the likelihood of water hammer. Buckets 4, freed from water moving through the channel of rectangular cross section, but in free space without water. Thus, there is formed a continuous toroidal channel of rectangular cross section for the passage of the buckets 4 of the impeller 2. Ring 11 is closed, the space of a channel of rectangular cross section from excessive water that can flow to the plane of the disk of the impeller 2.

Buckets 4 are attached to the edge of the disk of the impeller 2 via studs 12, welded to the bucket.

The base of the turbine consists of a left and right reinforced concrete columns of the stator 7 and 8. On the supports of these structures is mounted to the impeller shaft of the turbine with the generator. Between the columns 7 and 8 is mounted ka�al rectangular cross section, formed sealing wall 9, the rings 11 and the housings 3 and 6. Reinforced concrete columns are interconnected and turbine housings by bolts.

Thus, the advantage of the proposed device is the compactness of the turbine due to the fact that the channel of rectangular cross section. To eliminate water hammer in the bucket of water jet openings are provided and the rib formed by the surfaces of the bucket.

Estimated turbine compared to existing structurally simple and cheap to manufacture and operate and is designed for mini-hydro. This increases the capacity of the turbine due to more complete utilization of water energy proposed in a cylindrical channel with a rectangular cross section.

For rotation of the impeller uses the following types of water energy:

1) the pressure energypρgwhere p is the water pressure, ρ is density of water, g is gravitational acceleration;

2) potential energy z=z1-z2where z1the upstream water level of the water, z2- the level of downstream water;

3) kinetic energyν22g where ν is the velocity of the water.

The turbine provides the conversion of the energy of water into rotational energy of the shaft at low to medium pressure and is designed to drive an electric generator hydro and other machines and mechanisms.

The technical result of using the invention is as follows:

1. The power increase is due to better utilization of the energy of water flow due to structural features of the bucket and the channel of rectangular cross section of the toroidal shape.

2. The simplicity of construction and compactness due to the deletion of nodes: intermediate surge tank, nozzle water supply system and of the stator flux.

3. Improving the durability of the turbine due to the absence when the water hammer.

Turbine comprising a conduit connected to the upper and lower housings, which are located inside the impeller, installed evenly on the disk buckets made of a permanently-connected to each other at an angle less than 180° two identical metal sheets to form between them ribs on the opposite side, and in the center of each sheet is a through hole, and the shaft of the turbine wheel is located on the right and left fixed to a reinforced concrete supports of the columns of the stator, the sealing wall �otorongo, the inner surface of the casing and the ring, secured to the columns of the stator and the end disc of the wheel, forming the channel of rectangular cross section of the toroid.



 

Same patents:

FIELD: power industry.

SUBSTANCE: invention can be used in hydraulic power industry as an energy conversion device of a gravity water flow to electrical energy. A damless hydro-electric power plant includes a blade wheel and a housing installed on a support. The central vertical part of the housing is made in the form of a hollow sealed cylinder filled with water or air when necessary. The horizontal part of the housing, which is rigidly attached to a cylinder, represents a truss, on which there arranged is an annular track for support rollers of a bladed wheel, a bladed wheel rotated about the hollow cylinder, a support of driven sprocket 6 of the first stage of a kinematic circuit for transmission of revolutions from the bladed wheel to an electrical energy generator, side enclosures functionally performing a role of input and output diffusers A, B.

EFFECT: invention is aimed at improvement of an efficiency factor, simplification of a design and increase of unit power.

4 cl, 2 dwg

FIELD: power industry.

SUBSTANCE: invention relates to flow energy converters located along it and taking hydraulic energy at the distance determined by the converter length. A mini hydro-electric power plant includes a screw consisting of a cylinder with blades on its surface. The cylinder is connected to the generator and located along a water flow. The blades are made in the form of several pipes uniformly located along the cylinder surface along a helicoid line. A confuser with maximum cone diameter equal to the cylinder diameter and a diffuser the minimum diameter of which is equal to a sum of the cylinder diameter and two diameters of pipes at their inlet are connected to the cylinder. Outlet ends of the pipes are provided with tips installed at a tangent to cylindrical surface.

EFFECT: invention is aimed at increase of efficiency and specific output power owing to increasing the effect of obtaining higher pressure from a moving flow and simultaneous use of a jet component of the flow.

2 cl, 1 dwg

FIELD: energy industry.

SUBSTANCE: hydro-electric power-plant comprises electric generators, bearings and a float. On the base of the device the confusers and diffusers are mounted one behind the other. Between the confusers and diffusers the blade grid is located with the ability of vertical motion relative to the confusers and diffusers. The frictionless bearings are mounted on the support above the water flow.

EFFECT: obtaining electrical power with high efficiency, reliability and constant rate of rotation of the electric generators.

2 dwg

FIELD: power engineering.

SUBSTANCE: pumped storage plant on plain streams comprises riverbed hydraulic power units, including axial pumps, which are rotated by riverbed water wheels via multipliers. Riverbed hydraulic power units serve for filling of an upper accumulating pond made in the form of a water reservoir with dam walls along the perimeter. Upper and lower accumulating ponds are connected to each other by discharge pipelines with pumps-turbines in the lower part connected mechanically with electric motors - generators in a turbine room. The upper accumulating pond covers a river bed by half.

EFFECT: prevention of flooding of plains and land plots, free navigation and fish passage along entire length of a river, increased depth of a fairway and higher speed of water flow.

5 cl, 11 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: power engineering.

SUBSTANCE: invention relates to hydraulic power engineering and can be used for conversion of kinetic power of waste water. Proposed device comprises water-wheel 1 composed by rigidly jointed sidewalls 3, blades 4 and hub, water feed system 8 and water discharge system and water retaining element 9 secured at the housing. Said curved housing extends from water-wheel wall bottom point to top point on water-wheel working part and features width equal to that of water-wheel 1. Device comprises second water-wheel 1 in design identical to that of first water-wheel 1 and equipped with the same water retaining element 9. Both said wheels are articulated via gearing and mounted at housing 7. The latter is composed by two plates interconnected by elements 9 in symmetry with water feed system vertical axis at the distance of water-wheel 1 radius. Rectangular plate-shape blades 4 are fitted at the hub and walls 3. Pockets are composed between hub inner surfaces, blades 4 and walls 3 to be completely filled with water on the side of working parts of two water-wheels 1 to retain water at rotation to bottom point.

EFFECT: higher specific power and efficiency, perfected design.

2 dwg

FIELD: power engineering.

SUBSTANCE: hydraulic energy-generating plant 1 comprises a body 2 with a hole 8 for supply of water, arranged at the discharge side of the hydraulic canal, a hole 9 for water discharge, arranged at its bottom side, a channel 25, providing for connection of holes 8 and 9, a board 6 for collection of water, a vertical axial turbine 3, a generator 4 and a movable lock 5. The board 6 is arranged at the edge of the hole 8 and collects water in the hole 8 by means of catching and accumulating water flowing along the hydraulic canal. The turbine 3 is installed with the possibility of rotation in the channel 25 and comprises rotor blades. A generator generates energy, accepting the rotary force of the turbine 3. The lock 5 is made as capable of controlling the level of accumulated water at the discharge side of the hydraulic canal by means of variation of the area of the cross section of water flow, acting at the upper end of the blade of the turbine 3 as it arrives from the hole 8.

EFFECT: development of a hydraulic energy-generating plant, made with the capability to adjust water level at the discharge side and providing for stable quantity of generated energy with simple maintenance.

6 cl, 30 dwg

FIELD: power engineering.

SUBSTANCE: device to convert energy of spent water into electric energy comprises a vertical forward-flow channel in the form of a pipe with a hydraulic generator connected to a load in the lower part, in which there is a hydraulic generator screw with blades. The device additionally includes an expanding reservoir, equipped with washing waves, lower and upper air nozzles, providing for accordingly supply of ascending air flow, which additionally rotates the screw blades, and its bleeding. The screw blades have a cone-shaped section, which prevents accumulation of deposits in areas of connection with the shaft. There is a control system, which accumulates and redistributed the produced energy.

EFFECT: increased operational reliability and provision of stable operation.

2 dwg

FIELD: power engineering.

SUBSTANCE: hydroelectric plant comprises a floating base made in the form of a catamaran, between bodies 1 of which there is a channel formed, a water wheel 2 arranged in the latter, with blades 3 fixed on its outer surface and an electric generator 4 kinematically connected with a shaft 5 of the water wheel 2. Walls of the channel formed by bodies 1 of the catamaran are made as narrowing. The channel is symmetrical relative to the plane stretching via the axis of the water wheel 2. To the outer wall of the catamaran body 1, on which the electric generator 4 is located, a shield 7 is fixed at the angle to the flow, and on its upper part a rope 9 is fastened that attaches the plant to the coast. An electric cable connecting the electric generator 4 with a load is fixed freely to the rope 9.

EFFECT: simplified possibility to fix a hydroelectric plant in a certain area of a water stream.

1 dwg

FIELD: power industry.

SUBSTANCE: run-of-river hydropower unit includes base with posts on which there rotated is shaft of wheel with carriers on the ends of which axles with blades are installed. On edges of blades there fixed are tie rods having on their ends the rollers rolling in turn along "П"-shaped guide tracks of side members, which are placed inside near the above carriers. "П"-shaped guide tracks are made in circumferential direction. Centre of circle of guides is offset downwards from shaft axis. Central holes are cut in side members to allow the passage of axes of blades. Guides in upper part have L-shape due to the cutout.

EFFECT: simplifying the design, increasing power, improving reliability and durability of hydropower unit.

2 cl, 9 dwg

FIELD: electricity.

SUBSTANCE: method is used to generate electric power to supply automatic controls of pipelines, provision of electric power supply for equipment located outside access areas of permanent power supply. The suggested method is purposed for to implement process of power supply for water supply and disposal systems, gas supply systems, oil pipelines due to use of power from medium flow in the pipeline. Power generated in result of separation of flow part is accumulated in energy accumulator. Thereafter it can be used by means of static converter to supply duty equipment with power comparable to power of turbine and generator and devices with larger power that operate during short period of time.

EFFECT: reducing wear and tear of pipeline system.

1 dwg

FIELD: machine building.

SUBSTANCE: hydroelectric turbine includes stator 12 and shaftless rotor 14. Stator 12 restricts an opening in which rotor 14 is installed with possibility of being rotated. The opening allows rotation of rotor 14 about its central axis due to its shape and size, and movement in a circumferential direction of the opening, thus moving in the direction opposite to direction of rotor 14 rotation.

EFFECT: creation of an improved turbine that is characterised with a decreased friction of bearings, which occurs at its start-up, and provides the possibility of cleaning and cooling of bearings during its functioning, which improves operating characteristics of the turbine.

12 cl, 5 dwg

Water-power plant // 2488713

FIELD: engines and pumps.

SUBSTANCE: water-power plant comprises flow channel 40 composed of S-like tube including first, second and third sections 100, 200, 300. Said flow channel 40 has second diameter 400 and first axial line 410 at first section 100. Third section 300 has second diameter 500 and second axial lone 510. Spacing between said first and second axial lines makes 600. Besides, plant comprises turbine vanes 10 at first section 100 and generator 30 coupled with turbine vanes 10 via shaft 20 at third section 300. Flow channel 40 in region of generator 30 is made, mainly, of steel. Generator 30 has foundation 50 composed of steel rails or steel beams and integrated with roof 41 of third section 300.

EFFECT: higher efficiency.

5 cl, 4 dwg

FIELD: hydraulic power engineering.

SUBSTANCE: invention relates to design of hydraulic sets and it can be used in high-head hydroelectric power stations. Proposed coaxial hydraulic set consists of two working wheels with rotary blades arranged in one shaft, one over the other, and rotating in opposite directions. According to invention, upper working wheel has tubular spherical housing which rests in process of rotation through support and centering rolls onto ring conical rail and is provided with rotary blades installed on trunnions arranged on inner surface of tubular spherical housing, blade rotating mechanism being installed in ring holder. Said holder is arranged on outer side of tubular spherical housing which serves simultaneously as turbine chamber of tubular working wheel.

EFFECT: increased single-unit power and efficiency of coaxial hydraulic sets.

FIELD: operation of hydraulic turbine plants.

SUBSTANCE: proposed method includes cleaning surfaces from crust, preliminary treatment and application of coat made from polymer material, epoxy or polyurethane, for example at thickness of 30% of maximum depth of pits at isolated located of pits and 60% when pits adjoin one another. As a result, efficiency is increased by 1.5 to 2.5%.

EFFECT: enhanced efficiency of hydraulic turbine plant.

3 cl, 3 dwg

FIELD: turbines using kinetic energy of liquid flow.

SUBSTANCE: proposed turbine has turbine case , stay ring with cascade of stay vanes, wicket-gate mechanism with cascade of adjustable vanes, operating element with cascade of flange-mounted blades and drive shaft coupled with electric generator step-up gear, operating element chamber, and draft tube. It is also provided with straightening mechanism that has cascade of vanes, chain transmission that has sprockets and shafts; external and internal rims are made in cross-sectional areas in the form of ovals. Cascade of blades is made in the form of caterpillar cascade. Operating element blades are cylindrical in shape and hinge-joined through chain transmission whose drive sprocket is coupled with drive shaft. Flanges of operating element blades are provided with supporting rollers mounted in fixed supports and joined with chain transmission shafts at distances of two adjacent operating-mechanism blades; guides are made in the form of oval junctions joined with turbine internal rim in vicinity of their abutting against butt-ends of flanges carrying operating element blades.

EFFECT: enhanced turbine efficiency.

1 cl, 4 dwg

The invention relates to engineering and can be used for leveling the surface temperature profiles of the lower and upper dams hydroelectric power station

Hydroelectric // 2067689

FIELD: turbines using kinetic energy of liquid flow.

SUBSTANCE: proposed turbine has turbine case , stay ring with cascade of stay vanes, wicket-gate mechanism with cascade of adjustable vanes, operating element with cascade of flange-mounted blades and drive shaft coupled with electric generator step-up gear, operating element chamber, and draft tube. It is also provided with straightening mechanism that has cascade of vanes, chain transmission that has sprockets and shafts; external and internal rims are made in cross-sectional areas in the form of ovals. Cascade of blades is made in the form of caterpillar cascade. Operating element blades are cylindrical in shape and hinge-joined through chain transmission whose drive sprocket is coupled with drive shaft. Flanges of operating element blades are provided with supporting rollers mounted in fixed supports and joined with chain transmission shafts at distances of two adjacent operating-mechanism blades; guides are made in the form of oval junctions joined with turbine internal rim in vicinity of their abutting against butt-ends of flanges carrying operating element blades.

EFFECT: enhanced turbine efficiency.

1 cl, 4 dwg

FIELD: operation of hydraulic turbine plants.

SUBSTANCE: proposed method includes cleaning surfaces from crust, preliminary treatment and application of coat made from polymer material, epoxy or polyurethane, for example at thickness of 30% of maximum depth of pits at isolated located of pits and 60% when pits adjoin one another. As a result, efficiency is increased by 1.5 to 2.5%.

EFFECT: enhanced efficiency of hydraulic turbine plant.

3 cl, 3 dwg

FIELD: hydraulic power engineering.

SUBSTANCE: invention relates to design of hydraulic sets and it can be used in high-head hydroelectric power stations. Proposed coaxial hydraulic set consists of two working wheels with rotary blades arranged in one shaft, one over the other, and rotating in opposite directions. According to invention, upper working wheel has tubular spherical housing which rests in process of rotation through support and centering rolls onto ring conical rail and is provided with rotary blades installed on trunnions arranged on inner surface of tubular spherical housing, blade rotating mechanism being installed in ring holder. Said holder is arranged on outer side of tubular spherical housing which serves simultaneously as turbine chamber of tubular working wheel.

EFFECT: increased single-unit power and efficiency of coaxial hydraulic sets.

Up!