초록 ▼

Installations for harvesting energy of river and ocean tidal currents consist of multiple Darrieus type turbines with funnels, which are located inline on the river or ocean bottom and oriented perpendicular to direction of water movement due to tide or river current. Use of Darrieus type turbines w

Installations for harvesting energy of river and ocean tidal currents consist of multiple Darrieus type turbines with funnels, which are located inline on the river or ocean bottom and oriented perpendicular to direction of water movement due to tide or river current. Use of Darrieus type turbines with funnels significantly increases efficiency of energy utilization of water streams in comparison versus system not utilizing funnels. Use of greater number of Darrieus turbines operating in line allows to utilize more powerful gearbox and generator, thus improving economics of their operation. For the purpose of simplification the regular maintenance of the system the generator and all auxiliary systems are located above water, except 90-degrees gearbox. To prevent water entering 90-degrees gearbox it always is under air pressure slightly above hydrostatic pressure of water above it. To prevent lost of power generating capacity, due to accommodation of the growth on the turbine blades surface, special blade-cleaning machine operating in semi-automated mode is introduced.

대표청구항 ▼

What is claimed is: 1. A stationary installation for converting kinetic energy of tides into electricity in shallow waters and in narrow straits or rivers near coastal line utilizing Darrieus type in combination with funnel and consisting of a number of two-blade wheels staggered equally around 360

What is claimed is: 1. A stationary installation for converting kinetic energy of tides into electricity in shallow waters and in narrow straits or rivers near coastal line utilizing Darrieus type in combination with funnel and consisting of a number of two-blade wheels staggered equally around 3600 and along of a common shaft, comprising: a group of submerged Darrieus turbines with funnels, having their horizontally located axis of rotation oriented perpendicular to direction of water current, and connected to a 90-degrees gearbox having output shaft oriented vertically and connected with a generator; is housed by an elongated structure having one end of it incorporated into shoreline; each of said group of Darrieus turbines have their turbines interconnected to each other through their axis of rotation by short shafts forming one common shaft; said elongated structure, having at least two support points and at least two pair of anchoring means undertaking current horizontal force, contains: a powerhouse, which is located above sea level and incorporated into shoreline is interconnected on its lower underwater part with the end of said common shaft of said group of Darrieus turbines, which protrudes from the end of said elongated structure coming to the shore line, contains: a generator, oriented vertically and located in the upper part of said powerhouse and interconnected with 90-degrees gearbox through a vertical shaft, said 90-degrees gearbox, which transmits horizontal rotation of said Darrieus turbines to said vertically oriented generator, and which is located on the bottom of said powerhouse and is interconnected with said end of said common shaft of said group of Darrieus turbines, means for keeping inner space of said 90-degrees gearbox from being flooded, a remote operating means for cleaning, cooling and changing oil in said 90-degrees gearbox means for cleaning Darrieus turbine blades from growth on their surface in a semi-automated mode. 2. The stationary installation by claim 1, wherein said 90 degrees gearbox, which transmits horizontal rotation of said Darrieus turbines to said generator located in said powerhouse, and which is located on the bottom of said powerhouse and is interconnected with said end of said common shaft of said group of Darrieus turbines, comprising: a housing, which includes a set of planetary gears, having input shaft connected through universal joint with said turbine group common central shafts and output shaft, a bevel gear transmission consisting of input bevel gear attached to said planetary gears output shaft and engaged with output bevel gear attached to lower end of said vertical shaft transmitting rotation to said generator. 3. The stationary installation by claim 1, wherein said means for keeping inner space of said 90 degrees gearbox from being flooded, comprising: a system of compressed air that keeps pressure inside said gearbox above the hydrostatic pressure of water surrounding said gearbox comprising: a vertical column, the upper end of which is located in the room of said powerhouse and lower end is attached to upper part of said 90 degrees gearbox, forms a common hermetic inner space with said 90 degrees gearbox, an upper seal arrangements, which is located on upper part of said vertical column and positioned inside of said powerhouse, is engaged with said central vertical shaft, a lower seal arrangement on the said 90 degree gearbox input shafts, having means for controlling their tightness manually by diver, a compressor, an accumulator and a pipeline, which delivers compressed air into said 90 degrees gearbox hermetic inner space. 4. The stationary installation by claim 1, wherein said remote operating means for cleaning, cooling and changing oil in said 90-degrees gearbox, comprising: an oil pump, filter and oil cooling heat exchanger all located in said powerhouse and interconnected with inner space of said 90 degree gearbox located on the sea bottom through a pipeline loop that consists of suction and pressure lines. 5. The stationary installation by claim 1, wherein said means for cleaning Darrieus turbine blades from growth on their surface in a semi-automated mode, comprising: a horizontal carriage running along the IHET frame, a vertical carriage, which moves in vertical guides assembled on said horizontal carriage, having guide rails for blade cleaning machine, said blade cleaning machine consisting: a frame-carriage, two arms having a joint pivot axis, each said arm has one actuating hydraulic cylinder and one cleaning head, said cleaning head consists of a brush, support and a powered drive, which transmits rotation to said brush through a chain. 6. The stationary installation by claim 1, wherein said group of Darrieus turbines, comprising: two subgroups of said group of Darrieus turbines located symmetrically to said powerhouse and to said 90-degree gearbox; said 90-degree gearbox has two sets of said planetary gears and input bevel gear symmetrically located around said output bevel gear axis of vertical rotation; said ends of common shaft of said two subgroups are connected through universal joints with corresponding said input shafts of said planetary gearings inside said 90-degree gearbox; said two subgroups of Darrieus turbines and said powerhouse are assembled on a common base, which is anchored to sea bottom.