Floating hydroelectric power plant with underwater turbine
FIELD: conversion of river stream energy into electric power.
SUBSTANCE: proposed plant has base in the form of catamaran that mounts current generators and their drive, current parameters stabilizing system, turbine capable of running in fully submerged condition, and its hoist. Turbine is made in the form of belt conveyer installed on edge at certain angle to river stream. Blades made of flexible material are secured throughout entire width and length of belt. Each blade is made in the form of bucket capable of folding and resting on belt during transfer from working to idle side of conveyer, and it has pocket on external surface for automatic raising of blade by river stream during transfer from idle to working position. Turbine hoist has rocker arm for turbine suspension hinged on one end to catamaran and on other end, to turbine frame that mounts generator-drive bevel gear so that longitudinal axes of hoist rocker-arm hinges and longitudinal axis of bevel-gear driven pinion are disposed on same line. In addition, hydroelectric power plant is equipped with device enabling variation of turbine angle of installation to water flow.
EFFECT: enhanced power capacity.
1 cl, 4 dwg
The invention relates to engineering and can be applied in any region of Russia and the World.
Known hydropower plants, including floating, which as the engine used jet turbines. For example: "run of River hydroelectric power station". RF patent №2002099 C1 IPC F 03 B 17/06. Author Ryzhukhin R.S.
HES in patent No. 2002099 consists of the turbine, gearbox, generator control systems for them. Jet turbine is lowered into the water stream, which, acting on the turbine blades set at an angle to the stream, rotates its shaft, through the promotion of the gear shaft of the generator.
Two main reasons for using jet turbines to generate electricity from the free flow of the river:
1. The capacity of hydropower is directly proportional to the square of the working blades of the turbine. In jet turbine because of its structural features, it is difficult to achieve large-area flow effects on the turbine.
2. Hydraulic coefficient of jet turbines theoretically can not take from the stream of the river more than half of its capacity (usually it does not exceed 0.43).
Closest to the technical essence of the present invention is "Floating power", patent of Russian Federation №2160848, F 03 B 13/00, 17/06. Author Ushakov,
HES in patent No. 2160848 consists of floating bases "catamaran", on which is pivoted an active turbine, each blade which is made in the form of a series of buckets mounted in line with deaf external form, the bottom of which is assembled from overlapping hinged to the outer forming bucket blinds, whose axis of rotation does not coincide with their longitudinal axis of symmetry and rotation round its axis is limited and the shutter is made in the form of two thin plates that are collected in the package.
Active turbine patent No. 2160848 is lowered into the flow of the river on the pantograph and is connected with a generator drive through the overrunning clutch that allows you to work on one shaft PTO multiple turbines.
Active turbine patent No. 2160848 well established itself as a turbine capable of operating without reducing the efficiency fully immersed in water, as u (bottom) turbine.
However, in education the power station involved not only the rate of water flow, but the total area of the working bodies of the turbine affected by this thread. This is the so-called main factors. Besides them the power turbine and the entire station is influenced by such factors as the problem of drainage of waste water from the turbines, and many other factors.
The purpose of the invention is to improve the operational characteristics of floating power plants and their power.
This goal is achieved is eat, that floating HPS with an underwater turbine includes a floating base, made in the form of a catamaran that hosts the drive current generators, current generators, the stabilization system parameters of current, active underwater turbine that can operate completely submerged, and its lift. Underwater impulse turbine is made in the form of a belt conveyor mounted on the rib at an angle to the flow of the river, across the entire width and length of the conveyor belt is fixed to the turbine blades, made, for example, from an elastic material, and each blade made in the form of a ladle able to fold and lie down on the conveyor belt during the transition from working at idle branch conveyor and having on the outer surface of pocket for automatically lifting blades, the flow of the river, with its transition from idle to working position, lift the turbine comprises a rocker arm which is suspended from the turbine, one end hinged on floating base station, the second - on the frame of the turbine, with fixed thereto bevel gearbox drive current generators, and so that the longitudinal axis of the hinge arm lift and the longitudinal axis of the driven gear bevel gear located on one line, and the station is equipped with devices that allow the to change the installation angle of the turbine to the flow of the river during station operation.
Figure 1 shows a General view of the floating hydro - transverse incision.
Figure 2 shows a General view of the station - view from the side of the turbine.
Figure 3 shows a General view of the station - view in the plan.
Figure 4 shows how to set the stations on the river.
Floating hydroelectric power plant with an underwater turbine consists of a floating base 1 on which is placed the drive current generators 2. Special suspension 3 with the lift 4 to the side of the floating base station 1, it is hinged turbine 5 blades 6 mounted on the working surface of the tape 7, the active turbine station.
The blades 6 of the turbine 5 is made of elastic material and is a plate fixed to one end of a conveyor belt 7 of the turbine 5.
The second end plate with the same ribbon is connected to two flexible connections 8, and these relations are fixed on the plate in such a way (Fig 3. The view that the center of the plate is obtained in the form of a pocket. When exposed to the flow of the river plate and its pocket he unbends it from the tape at a certain angle, limited by the length of flexible connections, and the plate together with relationships takes the form of a bucket that is deployed against the current of the river. On the frame of the turbine 5 is fixed bevel gear 9, which is rigidly connected with the leading therom conveyor turbine and through chain gearing 10 shaft 11 is connected to drive generators, the Directors 2. The shaft 11 passes through the station and ends with a fork drive shafts 12, allowing you to connect to the head unit additional turbine, thereby increasing the capacity of the plant up to specified limits.
On floating base station 1 is placed, in addition to the above equipment, the location of the generator drive 14, bollards, guard rails, emergency anchor 18 and things necessary for any craft equipment. Station on the river is set at an angle to the flow, as shown in Figure 4, and is held in position by ropes 15 and 17. Front rope 15 is connected with the shore anchor 17 through the winch 16, allowing to change during operation of the station, the angle of attack of the flow of the working bodies of the turbine stations, thereby altering the power station in the direction of its increase in fall velocity head of the river in shallow water, and in the direction of its reduction at the work station in the flood.
Turbine 5 in the working position based on the additional supporting rollers 19, which allows you to completely unload the suspension and lift on the pressure of the flow at him.
Station operates in the following way:
In the off position, the station stands near the shore along the flow of the river, moored to the shore anchors. To set the station in the working position it is necessary to give the mooring will rastermusic the rope winch 16 and push in the river floating nose base station. Reactive component of the pressure force on the floating base station river station will pull the rope and go into the river for a predetermined length of her rope length and will be held in this position until there is no longer the pressure of the flow of the river. Winch 16 is set to an angle of attack of flow to the turbine station. It should match the flow rate and the required power station. At low water it is maximum and equal to 45°in flood - minimal, but sufficient for achieving a given power station. To eliminate the phenomenon of "yaw" station on the river when changing loads on her generator in the river descends bottom anchor 18.
After you install the station on the river and connect it to the consumer current lift 4 turbine 5 is dipped into the flow of the river. Force pressure flow to the turbine it is pressed against the support rollers 19. The same pressure acting on the turbine blades station, rotates there turbines, and those, in turn, is a bevel gear 9, the chain reducer 10, the shaft 11 rotate the rotor of the generator, producing electric current industrial settings.
The longitudinal axis of the driven gear bevel gear 9 and the axis of the hinge hanger 3 on the frame of the turbine are on the same line that allows you to transfer torque from the turbine blades to drive the generators 5 if I is m-fired turbine station to the longitudinal axis of its lift 4.
The same can raise the turbine from the flow of the river at any time regardless of the pressure of the flow of the river and thereby stop the operation of the station. In addition, in the drive system of generators of the station is provided by a friction clutch that allows you to disable the generator, without cutting the turbine, and a switch that allows you to turn off the station from the consumer, without stopping her work.
Floating hydroelectric power plant with an underwater turbine that includes a floating base, made in the form of a catamaran that hosts the drive current generators, current generators, the stabilization system parameters of current, active underwater turbine that can operate completely submerged, and its lift, characterized in that the active underwater turbine is made in the form of a belt conveyor mounted on the rib at an angle to the flow of the river, across the entire width and length of the conveyor belt which is fixed to the turbine blades, made, for example, from an elastic material, and each blade made in the form of a ladle able to fold and lie down on conveyor belt during the transition from working at idle branch conveyor and having on the outer surface of pocket for automatically lifting blades, the flow of the river during its transition from idle to working position, the lift most of the s is composed of the rocker, which is suspended from the turbine, one end of which is pivotally mounted on the floating base station, the second - on the frame of the turbine with fixed thereto bevel gearbox drive current generators, and so that the longitudinal axis of the hinge arm lift and the longitudinal axis of the driven gear bevel gear located on one line, and the station is equipped with devices that allow you to change the installation angle of the turbine to the flow of the river during station operation.
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: hydraulic power engineering.
SUBSTANCE: proposed hydraulic turbine generators are designed for creating stationary and portable hydraulic plants of modular type. Generators have rotor with central shaft non-rotating around horizontal axis or vertical axis (as version) on which chain drive gears are rigidly fitted, each being coupled through independent chain drive with planet pinion members arranged radially and uniformly around central shaft. Each member has blade reduction gear consisting of gear of chain drive and of large and small cylindrical gears, the latter being coaxial and rigidly coupled with gear of chain drive of blade reduction gear, and large cylindrical gear is rigidly secured on axle of blade installed horizontally for generator (or vertically, as version). Each blade rests by ends of its axle for rotation on brackets secured on hubs by bases. Hubs are installed on both ends of shaft for rotation and tops of brackets at both ends of central shaft are connected by ring rims being drive wheels connected with energy converters by flexible drive.
EFFECT: provision of effective and reliable operation.
3 cl, 4 dwg
FIELD: hydraulic engineering.
SUBSTANCE: device is designed for converting kinetic energy of small and medium rivers into elastic energy. Proposed hydraulic unit contains hydraulic turbine installed on frame with bearings on its shaft, generator mechanically coupled with hydraulic turbine, stream shaper and device in form of plates to protect hydraulic unit from floating debris. Hydraulic unit has intermediate vertically and horizontally installed shafts with bearings interconnected by conical gears. Vertical shaft is arranged in well built near bank and communicating with river by channel made under level of maximum possible thickness of ice cover. Part of horizontal shaft connected with hydraulic turbine is arranged in said channel. Upper end of vertical shaft is connected with generator through ground horizontal shaft and step-up reduction unit. Stream shaper is made in form of flaps installed on shaft for turning to direct water stream of river to its central part between which turnable gate is installed for contacting with one of flaps to direct water stream to right-hand or left-hand side of hydraulic turbine.
EFFECT: provision of reliable operation all year round.
3 cl, 2 dwg
FIELD: power engineering.
SUBSTANCE: invention relates to non-conventional power sources, and it can be used in plants using energy of wind, river, deep sea and other currents. Proposed plant contains one or several vertical shafts and horizontal rods with blades. Said hollow rods are installed on shafts for limited turning relative to their axes. Opposite blades of each rod are rigidly secured on rod square to each other and eccentrically relative to axis of rod. Shafts adjacent in horizontal direction are made for rotation in opposite directions.
EFFECT: provision of simple ecologically safe device operating at any direction of current in liquid and gaseous medium and at medium interface.
FIELD: oil and gas well drilling equipment, particularly axial flow turbine of multistage turbodrill.
SUBSTANCE: turbodrill turbine comprises stator with blade ring and inner rim, rotor with blade ring and hub. Design angles of stator flow inlet and outlet directions α2 and α1 and rotor flow inlet and outlet directions β2 and β1 are related by theoretical correlations with peripheral velocity determined in idle and optimal (shock-free) mode of turbine operation. Stator and rotor blade ring blades defining above design angles as distinct from prior art turbines are formed so that shock-free regime of flow around the stator and the rotor is realized at different peripheral velocities, wherein above shock-free regime of stator flow-around is performed in retardation mode, shock-free regime of rotor flow-around is performed in runaway mode thereof. Above stator and rotor angles are correlated as α1<α2≤π/2 and β2<β1≤π/2 (in the case of positive reactive turbine) and β1<β2≤π/2 (for negative reactive turbine). The stator rim has surface of lesser diameter having conoid shape and converging towards lower cross-section thereof so that minimal annular gap defined by rotor hub is 0.05-0.3, preferably 0.1-0.2 of radial stator blade height and inner blade ring surface of lesser diameter has conoid shape and is converged to upper section so that radial rotor blade height ratio in lower and upper sections is equal to 0.7 - 0.95.
EFFECT: increased axial support resistance along with increased performance.
5 cl, 8 dwg