DE102012003447A1 - Power plant with stowage device - Google Patents

Abstract

The present invention relates to a power plant for generating electrical energy with at least one damming device (90) for damming or storing water from a natural or artificial water (95) or river, wherein the damming device (90) has at least one passage (92) the flow rate of the water is increased, and with a power generator, a rotating device or a turbine (106) with a coupled electric generator for generating electric current, which is arranged in or on the passage (92) of the storage device (90) and is driven by the water flowing through the passage (92), the passage (92) being more height adjustable.

Description

The present invention relates to a power plant with a storage device for generating electrical energy from hydropower.

In a power plant, by using a rotary device or a turbine with a coupled electric generator, electrical energy can be obtained from the energy of the water of a river or river. In the EP 2191129 B1 and the EP 1979611 B1 are described rotary devices with a coupled generator for generating electrical power in a power plant.

The object of the invention is to increase the energy yield of the power plant.

This object is achieved by the power plant according to claim 1. Thus, the power plant of the invention for generating electrical energy has at least one damming device for damming or storing water from a natural or artificial water or river, wherein the damming device has at least one passage or through-hole in which the flow velocity of the water is increased, and at least a power generator or a rotary device or a turbine coupled to an electric generator for generating electrical current, which is arranged in or on the passage of the storage device and is driven by the water flowing through the passage, wherein the passage is adjustable in height.

The invention has the distinct advantage that an increased flow velocity of the water of the water body is generated in the passage, whereby in turn the rotary device or turbine can produce more electrical energy in the passage than in the case without a stowage device and passage in the water or river. Furthermore, in the power plant of the invention, due to the vertically adjustable or height adjustable passage, the vertical position of the passage can be adjusted to the instantaneous or changed water level in the stowage device and / or in the water to provide continuous flow through the turbine or rotary device in the passageway for one to allow correspondingly high energy yield.

The baffle device preferably has an opening and a slide arranged in or at the opening in which the passage is formed and which is vertically movable such that a vertical movement of the slide displaces the height of the passage at the baffle device, the slide Opening of the storage device in each vertical position of the passage at least partially covers. This ensures that at a height adjustment of the passage at the same time always the wasserbeaufschlagte opening of the storage device is closed, so that the water can flow only through the flow and the opening, but never unintentionally alone through the opening, which would otherwise reduce the energy yield ,

The stowage device may have a vertical sink shaft at the bottom into which the slider engages, thereby achieving a safe construction of the power plant.

A vertical dimension of the wellbill may correspond to at least one vertical dimension of the opening to ensure secure coverage of the opening regardless of the location of the passageway.

The slide can be constructed as a float, which moves with the water level in the storage device, whereby the passage can be constantly adapted to the current water level.

It can also be provided an electric motor drive, which is coupled to the slider to effect its vertical height adjustment. Furthermore, an adjustment control device for controlling the electromotive drive and / or slide depending on the water level in the storage device and / or the water level or level of the river or river may be provided to allow an optimal adjustment of the altitude of the passage with a correspondingly increased energy yield can.

The adjustment control device may be coupled to at least one float, which moves with the water level in the storage device or the water to be able to detect the water level.

The stowage device may have a height-adjustable passage provided with an inlet for the water from the water into the stowage device, and another height-adjustable passage which is an outlet for the water from the stowage device into the water.

The stowage device of the invention may have two or more barrages spaced apart from each other in the water, each having at least one passage provided in the region of a bottom of the river or river and which may be constructed as a height-adjustable passage according to any one of claims 1 to 10 , With the cascading of barrages can over a corresponding number of rotary devices with electric generators more power can be generated.

The stowage device may have at least one dry pool into which water may flow from the body of water or river at an increased flow rate through a height adjustable inlet passage, the passageway being constructed according to any one of claims 1 to 10 and wherein the rotation device or turbine and the associated generator generates electrical power as long as water flows into the dry pool. The power plant with dry pool also allows operation of the power plant of the invention as a pumped storage power plant.

The stowage device may also include a plurality of serially or cascaded and fluidically coupled dry basins or chambers, wherein each adjacent adjacent dry basins are fluidically coupled via at least one passage to a power generator or a rotary device or turbine including an electric current generating generator, the passage again height adjustable according to one of claims 1 to 10 may be formed. By this embodiment of the invention, in particular, the energy yield during operation of the power plant can be increased as a pumped storage power plant. Preferably, the passages of the series arranged dry basins or chambers in the flow direction of the water from dry pool to dry pool in level from the edge of the dry basins to the bottom are further formed in the direction of the ground.

A specific embodiment of the invention may have at least one pre-basin having at least one passage for filling with water from the water, the passage being provided in the region of an upper edge of the pre-basin and provided with a rotary device or a turbine for generating electric current , and at least one subsequent dry pool, wherein between the dry pool and the pre-basin is a passage at floor level of the basin, which is provided with a power generator. Both passages can be constructed here height-adjustable in each case according to one of claims 1 to 10. The filled dry basin can, for. B. can be emptied in surplus in the water or the water in the dry pool can be pumped back into the pre-basin to allow pumped storage of energy. More specifically, the power plant may have at least one electric pump connected to the dry pool, at least one of the dry basins or chambers or the last of the dry basins or the last chamber of the series or cascade of dry basins or chambers fluidly pumping the water from the at least one dry basins in the Waters or the river or is coupled to the pre-basin.

The passage or each of the passages can be closed by means of a locking device or a closing slide to allow control of the power plant in pumped storage operation.

The power plant of the invention may also have a displacement channel which allows an even higher flow rate of the water. The displacement channel may have a height-adjustable passage according to one of claims 1 to 10.

Advantageous developments can be found in the dependent claims. Further advantages, possible applications and advantageous developments of the invention can be taken from the following description of preferred and exemplary embodiments of the invention in conjunction with the drawings. Show it:

1 a schematic side view of an embodiment of the power plant of the invention with a storage device having two barrages;

2 a schematic cross-sectional view of the embodiment of 1 in the direction of the arrow 11 in 1 seen;

3 a schematic plan view of another embodiment of the power plant of the invention with a storage device, which is composed of several dry basins or chambers in series, wherein a first dry pool serves as a pre-basin, in the direction of arrow III of 4 seen;

4 a schematic side view of the embodiment of 3 in the direction of the arrow IV of 3 seen;

5 a schematic side view of yet another embodiment of the power plant of the invention with a storage device having an open at the end storage compartment, in the direction of arrow V of 6 seen;

6 a schematic plan view of the embodiment of 5 in the direction of the arrow VI of 5 seen;

7 a schematic view of another embodiment of the invention with a reservoir and a height-adjustable passage in a vertical position; and

8th a schematic view of the embodiment of

7 , wherein the passage in a different height position than in 7 is.

1 and 2 schematically show an exemplary embodiment of the power plant of the invention, which is a stowage device 1 has that in a river 2 or river with slope is installed.

The stowage device 1 has a first barrage 1.1 and a second barrage 1.2 spaced by the first barrage 1.1 is arranged downstream. The first barrage 1.1 has a foundation 1.11 that in the ground 3 of the river 2 is installed, and a vertical dam wall 1.12 that dammed the river water. The second barrage has exactly the same 1.2 a foundation 1.21 that turn into the ground 3 of the river 2 is installed, and a vertical dam wall 1.22 , which dammed up the river water again. The two stowage walls 1.12 and 1.22 are each as a continuous cross-building in the riverbed 2.1 built up. Between the two barrages is thus a stowage chamber 8th designed for the river water. The whole stowage device 1 is made of reinforced concrete.

The stowage wall 1.12 the barrage 1.1 has a passage 4 with a rectangular cross-section at floor level 3 of the river 2 , In the passage 4 is a rotation device 5 housed with a built-in electric generator as a generator.

As in 1 is shown schematically only by the double arrow shown, the passage 4 be vertically adjustable. In the dam wall 1.1 Accordingly, a stationary, relatively large opening may be provided and a slide may be provided, which is arranged in or at the opening in which the passage is formed and which is vertically movable such that a vertical movement of the slide, the height of the passage 4 adjusted at the stowage device, wherein the slide the opening of the stowage wall 1.1 in every vertical position. Furthermore, at the bottom of the stowage device 1 a vertical countersink, which is recessed in the ground and in which the slider can engage or retracts when it is moved vertically.

According to EP 2191129 B1 can the rotation device 5 to get energy from the flow movement of the river 2 with increased flow velocity within the passage 4 to win, a main rotator which is fixedly connected to a central axis of rotation of the rotary device, and one or more rotational surfaces which are rotatably mounted about their axes of rotation spaced from the central axis of rotation to the main rotator such that the main rotator through the one rotary surface or by a plurality of rotational surfaces can perform a rotational movement about the central axis of rotation, wherein the rotational surface axes extend parallel to the axis of the main body. Further, the rotary device has a shuttle or control means for controlling or adjusting the position of the rotating surface or rotating surfaces relative to a flow direction of the river or water body having an adjusting sleeve and / or an adjusting frame for each rotating surface, wherein the adjusting sleeve or the adjusting frame about the central axis of rotation is freely rotatably disposed about, but is not rigidly or frictionally connected to the central axis of rotation radially, and is coupled to the associated surface of rotation to transmit their pendulum motion on the surface of rotation for adjusting the rotational surface. The main axis of the rotary device is fixedly coupled to an electrical generator for generating electrical current.

3 and 4 schematically show another exemplary embodiment of the power plant of the invention, which is a stowage device 10 has that in a river 2 is built and occupies only part of the cross section of the riverbed.

The stowage device 10 is as a dry pool 10.1 with a total of five juxtaposed chambers 15.1 . 15.2 . 15.3 . 15.4 and 15.5 built by a continuous side wall 11 , another parallel side wall 11.1 and a total of six transverse walls 12.1 . 12.2 . 12.3 . 12.4 . 12.5 and 12.6 are formed, which are arranged one behind the other, parallel and at a distance from each other. The transverse walls 12.1 to 12.6 stand vertically on the ground 13 and contain down to the bulkhead 12.6 at the end one passage each 14.1 . 14.2 . 14.3 . 14.4 respectively. 14.5 , The last transverse wall 12.6 is thus a barrier wall.

In the passages 14.1 to 14.5 each is a rotation device 15 or turbine with generator for generating electric power housed. At least the passage 14.1 is with a closure 16 , For example, a gate valve, provided to the passage 14.1 , the fuldische with the river 2 is connected, lock or lock. In alternative, each of the passages could also 14.1 to 14.5 with a closure 16 be provided. The passage 14.1 is at a level, for example, 1 m below the water surface. The passage 14.2 is then at a level of 2 meters below the water surface 2.3 provided during the passage 14.3 or the passage 14.4 at a level of 3 m or 4 m below the water surface 2.3 lies. Finally, there is the passage 14.5 at the level of the soil 13 or about 5 m below the water surface 2.3 ,

As in 3 is shown schematically only by the double arrows shown, each or only a part of the passages 14.1 to 14.5 be vertically adjustable. Consequently, in each case a relatively large opening can be provided in the transverse walls and there can be one slide per transverse wall arranged in or at the associated opening, in which the corresponding passage is formed and which is vertically movable such that a vertical Movement of the slider adjusts the height of the passage on the transverse wall, wherein the slider covers the opening of the transverse wall in each vertical position. Furthermore, in each case a vertical countersink can be provided at the bottom of the respective transverse wall into which the associated slide can engage during adjustment.

In 4 is the condition of the dry pool 10.1 the power plant shown when the entire dry basin 10.1 so the chambers 15.1 to 15.5 with water from the river 2 or water is filled and thus on the rotary devices 15 with generators maximum electrical energy has been generated. Here is the shutter 16 open.

Is the dry pool 10.1 filled, the passage becomes 14.1 through the lock 16 locked and, if there is an excess of electricity, the dry pool 10.1 by means of an electric pump connected to the last chamber 15.5 the dry pool is fluidly coupled via corresponding lines, are pumped empty, the pumped water simply the flow 2 is fed again. Consequently, in contrast to conventional pumped storage power plants, in which it is known that the dry pool is filled in surplus power, in the invention, the dry pool 10.1 pumped empty at excess current. The electric power for supplying the pump is from a secondary power plant, eg. As a wind power plant or a water wheel, provided with excess power, the z. B. can also be constructed as said rotary device with coupled generator. When power is required then the shutter 16 be reopened to electrical energy in the rotary devices 17 with coupled generator by that in the dry basin 10.1 to generate incoming water until the dry pool 10.1 is filled again.

5 and 6 schematically show yet another exemplary embodiment of the power plant of the invention, which is a stowage device 20 has that in a river 2 is built and occupies only part of the cross section of the riverbed. Here is the stowage device 20 as a displacement channel 26 constructed and has a base 23 at the bottom of the river 2 with the water level 2.3 , a vertical transverse wall 22 , where the water jams, and parallel side walls 25 and 27 on. In the transverse wall 22 is a passage 24 provided in which a rotary device 21 housed with electric generator. Also through this stowage device 20 is the flow rate of the water in the passage 24 increased, whereby a higher current efficiency is possible. The passage 24 is, for example, 1 m below the upcoming water surface 2.3 , An exit 28 the displacement channel is from the rotary device 21 or turbine preferably far enough away that a water gradient of 1 m is achieved.

As in 5 is shown schematically only by the double arrow shown, the passage 24 be vertically adjustable. In the transverse wall 22 Consequently, a stationary, continuous, relatively large opening can be provided and a slide can be present, which is arranged in or at the opening in which the passage is formed and which is vertically movable such that a vertical movement of the slide the height of the passage 24 at the stowage device 20 adjusted, wherein the slide the opening of the transverse wall 22 in every vertical position. The passage 24 has in comparison to the opening only a relatively small clear cross section or corresponds to only a part of the opening in the transverse wall. Furthermore, at the bottom of the stowage device 1 a vertical countersink can be provided, in which the slider can engage during adjustment.

7 and 8th show schematic views of another embodiment of the invention with a storage device 90 which has a reservoir 96 and a height-adjustable passage 92 that's here as an outlet for the water 94 from the reservoir 96 or pumping basin into the water 95 such as B. serves a river.

The reservoir 96 has vertical pelvic walls 102 and is on the shore 101 of the water 95 arranged. In one of the pool walls 102 is a continuous and relatively large opening 100 except (in 7 dot-dashed lines) extending from a floor 103 of the reservoir 96 up to an upper edge 104 the pelvic wall 102 or the reservoir 96 extends vertically and has a rectangular cross-section. A vertical sinker 98 with an associated shaft wall 97 concrete extends from the ground 103 starting down in the extension area of the opening 100 , In the opening 100 and in the shaft 98 is a plate-shaped or wall-shaped slider 93 housed and vertically movably guided, the dimensions in the opening 100 of the reservoir 96 and in the shaft 98 fits. The passage 92 is in the slider 93 except, so that water 94 from the reservoir 96 through the opening 100 and the passage 92 and thus by the turbine housed in the water 95 can flow or drain to generate electrical energy.

As 7 can be seen, is the slide 93 with the passage 92 in an altitude that is relatively high up, with the slider at its upper end 91 already over the edge 104 of the reservoir 96 stands out, but still in the shaft 98 with its lower end 105 intervenes. The passage 92 Turbine is below a level 99 of the water 94 in the reservoir 96 but still above a level 95.1 of the water 95 so that water from the reservoirs 96 through the passage 92 with turbine in the water can flow to the gradient between the water 94 in the reservoir 102 and the waters 95 to exploit for the electrical power generation.

Decreases the level 99 in the reservoir 96 off, the slider will 93 with the passage 92 starting from the altitude in 7 vertically down into the sinkhole 98 moved accordingly, adjusted or tracked, he reached the altitude, the in 8th is shown. At this altitude is the end 91 of the slider 93 flush with the edge 104 of the reservoir 96 and the bottom end 105 of the slider 93 extends even further into the sinkhole 98 into it. Because also in this position a gradient between the levels 99 and 95.1 water can pass through the turbine ( 106 ) in the passage 92 flow to generate electricity.

It can be provided an electric motor drive, which with the slide 93 coupled to effect its vertical height adjustment. Furthermore, a Verstellsteuereinrichtung for controlling the electric motor drive and / or the slider 93 depending on the level 99 in the reservoir 96 be coupled with the electric motor drive. The adjustment control device can in turn provide a level detector for detecting the level 99 For example, the level detector is provided with a float located on the water surface of the water 94 in the reservoir 96 Floats and gets level 99 moved. The movement of the float can be converted, for example, into an electrical signal, which in turn is fed to the input control of a program-controlled microprocessor of the adjustment control device by polling. The microprocessor evaluates the electrical signal and controls the electric motor drive in such a way that the slider 93 the level 99 is tracked. The electric motor drive can, for. Example, have an electric motor which is coupled to a gear, which in turn engages in a rack, with the slider 93 connected is. The movement of the electric motor is then via the gear and the rack in a corresponding vertical movement of the slider 93 and thus also the passage 92 implemented.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2191129 B1 [0002, 0033]
• EP 1979611 B1 [0002]

Claims (10)

Power plant for generating electrical energy with at least one storage device ( 90 ) for damming or storing water from natural or artificial waters ( 95 ) or river, the stowage device ( 90 ) at least one passage ( 92 ), in which the flow velocity of the water is increased, and with a power generator, a rotary device or a turbine ( 106 ) with a coupled electrical generator for generating electrical current, which in or at the passage ( 92 ) of the storage device ( 90 ) and through which through the passage ( 92 ) flowing water, the passage ( 92 ) is height adjustable. Power plant according to claim 1, characterized in that the stowage device ( 90 ) an opening ( 100 ) and a slider ( 93 ) located in or at the opening ( 100 ), in which the passage ( 92 ) is formed and which is vertically movable so that a vertical movement of the slider ( 93 ) the height of the passage ( 92 ) on the stowage device ( 90 ), whereby the slider ( 93 ) the opening ( 100 ) of the storage device ( 90 ) covers at least partially in each vertical position. Power plant according to claim 2, characterized in that the stowage device ( 90 ) on the ground ( 103 ) a vertical countersink shaft ( 98 ), in which the slider ( 93 ) intervenes. Power plant according to claim 3, characterized in that a vertical dimension of the countersink shaft ( 98 ) at least one vertical dimension of the opening ( 100 ) corresponds. Power plant according to one of claims 2 to 4, characterized in that the slide is constructed as a float, which moves with the water level in the storage device. Power plant according to one of claims 2 to 4, characterized in that an electric motor drive is provided, which with the slide ( 93 ) is coupled to effect its vertical height adjustment. Power plant according to claim 6, characterized by an adjustment control device for controlling the electromotive drive and / or slide ( 93 ) depending on the water level ( 99 ) in the stowage device ( 90 ) and / or the water level ( 95.1 ) or level of the water ( 95 ) or river. Power plant according to claim 7, characterized in that the adjustment control device is coupled to at least one float which is in contact with the water level ( 99 ) in the stowage device ( 90 ) or the waters. Power plant according to one of the preceding claims, characterized in that the stowage device ( 90 ) has a height-adjustable passage, which is an inlet for the water from the water into the storage device, and / or a height-adjustable passage ( 92 ), which has an outlet for the water from the stowage device ( 90 ) into the water ( 95 ). Power plant according to one of the preceding claims, characterized in that the passage or each of the passages is closable in particular by means of a locking device or a closing slide.

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