Beam for attachment of fairing of hydro-electric power plant, and hydro-electric power plant containing such beam

FIELD: power industry.

SUBSTANCE: beam (8) for attachment of fairing (2) of hydro-electric power plant (1) has a cross section in a plane perpendicular to longitudinal axis (A8) of beam (8) in the form of a parallelogram. Beam (8) includes at least one slot that mainly passes parallel to longitudinal axis (A8) of beam (8). In the cross section perpendicular to longitudinal axis (A8) of beam (8), traces of the surfaces located along the slot pass from one of the sides of large sizes of the cross section to the adjacent side of small sizes of the cross section. Hydro-electric power plant (1) includes wheel (3) that can be rotated about axis (X1), fixed fairing (2) enveloping the wheel, and at least one beam (8) for attachment of the fairing, which attaches the fairing to central support (6) of the hydro-electric power plant.

EFFECT: geometrical shape of an attachment beam allows restricting Karman vortexes and even preventing their formation at action on the beam of water flow during operation of a hydro-electric power plant.

10 cl, 7 dwg

 

The present invention relates to a beam fairing mounting of the hydropower plant and the hydropower plant containing such a beam.

The wheel of the hydropower plant, for example, known from the patent WO-A-2009/126996 comprises a Central hub having the geometrical form of rotation around the axis of rotation of the wheel, and the blades are fixedly connected with the hub, which pass radially outward from the hub. Hydropower installation can be equipped with a stationary outer fairing that covers the wheel and which has a geometric form of rotation around the axis of rotation of the wheel. Fairing restricts hollow cylindrical volume, inside which are arranged the blades and hub. To connect fairing with fixed bearing, which surrounds the hub, using known mounting beams. Typically, these beams have a rectangular cross-section, the edges of large dimensions which are parallel to the flow of water passing through the blades during operation of the hydroelectric plant.

During operation, the water passes along the beams at the level of the sides corresponding to the edges of the large size of the cross section. Behind the beam generated turbulence Pockets, which creates mechanical stresses in a beam, which can lead to cracking and should be avoided.

In this regard, an object of the present invention is a beam of attachment of the fairing of the hydropower plant having a section in a plane perpendicular to the longitudinal axis of the beam, in the form of a parallelogram. The beam includes at least one slit, which basically runs parallel to the longitudinal axis of the beam. In a section perpendicular to the longitudinal axis of the beam, the traces of the surfaces along the slits extend from one side of the big sizes section to adjacent sides of the small size of the cross section.

Thanks to the invention, water flows into the gap that stabilizes the flow of water along the beam and allows to avoid the formation of eddies Pocket behind the beam.

According to a preferred but not restrictive aspects of the invention, such beam mount may have one or more of the following distinguishing features considered in any technically possible combination.

Side small size of the cross section forms an acute angle with the adjacent side of the big sizes section.

- In the plane perpendicular to the longitudinal axis of the beam, the angle on the outside of the beam from the side edges of the SOP�of Azania between the party of small cross-section dimensions and the side of the big sizes section relative to the slit and formed, on the one hand, the large plot size located from the side of the rib relative to the slit, and, on the other hand, the Central or middle axis of the slit exceeds 90°.

- In the plane perpendicular to the longitudinal axis of the beam, the angle on the outside of the beam exceeds 120°, preferably is in the range from 130° to 160°, preferably approximately equal to 150°.

- In the plane perpendicular to the longitudinal axis of the beam, an angle, situated inside the beam and limited side of the big sizes of a parallelogram and the side of the small dimensions of the parallelogram forming an obtuse angle with a side of large size, greater than 90°, preferably greater than 120°, more preferably approximately equal to 150°.

- From the same side of the large dimensions of the parallelogram made at least two slits.

- Slit performed, starting from the same side of the big sizes of a parallelogram are parallel.

- At least one slit is made, starting from each side of large dimensions.

- The beam is equipped with means of attachment for connection of the two parts of the beam located on either side of one slit.

At least part of the beam, with the side edges of the interfacing between the party of small cross-section dimensions and the side of the big sizes section relative to the slit, is made of m�of the material, having a higher mechanical strength than the material part of the beam, which is opposite to the edge on the slit.

The object of the invention is also a hydropower plant comprising a wheel made with the possibility of rotation around the axis, the stationary fairing covering the wheel, and at least one beam mounting of the fairing in accordance with the present invention, which connects the fairing with the Central pillar of the hydroelectric plant.

The present invention and its other advantages will be more apparent from the following description of the hydropower plant and beams of attachment of the fairing in accordance with the present invention, provided solely as an example, with reference to the accompanying drawings, in which:

Fig.1 depicts an isometric view of the hydropower plant containing three beams of attachment in accordance with the present invention;

Fig.2 is an enlarged view in section along the plane II of Fig.1;

Fig.3 is an enlarged view in section along the line III of Fig.2;

Fig.4 is an enlarged view of the detail IV of Fig.3;

Fig.5 is an enlarged view of the detail V of Fig.3;

Fig.6 is similar to Fig.4, a second embodiment of the invention;

Fig.7 is similar to Fig.4, a third embodiment of the invention.

Fig.1 and 2 show hydrogen�reticency installation 1 with the axis X1, containing outer fairing 2, wheel 3, five blades 4, a stationary Central support three beams 6 and 8 of attachment.

In the further text of the description, the term "axial" means a direction parallel to the axis X1, and the term "radial" means a direction perpendicular to the axis X1 and is a secant relative to the axis, or the surface perpendicular to the radial direction. In addition, the element referred to as proximal is closer to the axis X1 than the element referred to as distal.

As shown in particular in Fig.2, the Radome 2 is hollow and has a ring form with the axis X1, and the Central bearing 6 is a cylinder with a round base with an axis X1 that contains the outer casing 61. Beams 8 mounts are held in the radial direction, each along its longitudinal axis A8, and connect the support 6 with the fairing 2. The proximal ends of the beams 820 8 mounted on the outer radial surface 64 of the casing 61, and the distal ends of the beams 840 8 mounted on the inner radial surface 22 of the fairing 2. The outer radial surface 65 includes an annular recess 64 for the passage of the blades 4. Means 63 attachment connect the supports 6, located on either side of the notches 64. Fairing 2, the beam 8 and the bearing 6 is fixedly connected and form part 5 of the hydropower plant 1 remaining stationary during� operation of the hydropower installation 1.

The blades 4 are formed radially, and their proximal ends 42 secured to the cylindrical section 46a with round base of the hub 46, which is located inside the outer shell 61 of the support 6. Plot 46b of the hub 46 in the form of a disk with the axis X1 is connected with a plot 46a and with a plot s hub 46, which has a geometric form of a rod with the axis X1. Plot s hub 46 is directed in the rotation support bearing 62, belonging to a support 6. The hub 46 rotates the input shaft not shown of the alternator. The distal ends 44 of the blades 4 extend to a radial inner surface 22 of the fairing 2. The blades 4 and the hub 46 together form a wheel 3 of the hydropower plant 1, which is made with possibility of rotation around the axis X1 relative to the fixed part 5.

During operation, the water flow F1 or F2, mainly parallel to the axis X1, passes through a hydropower installation 1 in one direction or another.

As shown in Fig.3, the beam 8 is made in the form of prisms, the cross section S which, taken perpendicular to its longitudinal axis A8, mainly has the shape of a parallelogram that has two sides 801 and 803 of large dimensions parallel to the axis X1, and the two sides 802 and 804 of the small size. The acute angle γ inside the parallelogram, is limited between the sides 801 and 802, and the acute angle γb inside Paral�ologramma, is limited between the sides 803 and 804. Corners γ and γb equal. However, it is not a prerequisite.

Pair the sides 801 and 802 forms a first edge And beams 8, and a pair of sides 803 and 804 forms a second edge of the parallelogram. Edges A and b are rounded.

The front edge of the beam 8 is an edge A or b of the beam with which the flow F1 or F2 comes into contact in the first place, and the trailing edge of the beam 8 in the flow direction F1 or F2 is an edge A or b, located at the exit, i.e. from the side of the road which passes the flow F1 or F2, relative to the leading edge.

Thus, for the flow F1 of the rib And forms the front edge of the beam 8 and the edge In forms the back edge of the beam 8, and the flow F2 of the edge To form a forward edge of the beam 8, and the rib And forms the back edge of the beam 8.

Each of the beams 8 contains the main element 82, which is opposite to the ribs A and b relative to the slits 86a and 86b, and two segments 84A and 84b that are respectively from the rib or ribs And cracks In a relatively 86a or 86b. The remaining space between the main element 86 and a segment 84A forms a slit 86a, and the remaining space between the main element 86 and a segment 84b forms a slit 86b. Segments 84A and 84b are connected to the main element 82. This connection can be realized, for example, by welding, not shown elements, raspredelenie�x between a proximal end 820 and a distal end 840 of the beam 8 and connecting the main element 82 with line segments 84A and 84b. Other means of attachment may be, for example, screws, which cooperate with threaded holes formed in the main element 82 and in sections 84A and 84b.

Slits 86a and 86b, the segments 84A and 84b and the main element 82 extend from the proximal end 820 to the distal end 840 of each beam 8.

As shown in Fig.4, the slot 86a is made along the Central axis Z86a. This forms the angle αa, approximately equal to 150° between, on the one hand, the plot a side 801 belonging to the segment 84A, and, on the other hand, the plot axis Z86a, which takes place outside of the beam 8 outside side 801, that is, the side edges of A. the Angle αa is on the outside of the beam 8 from the side edges And the pairing between the side 802 of the small size of the cross section S and the side 801 of the big sizes section S relative to the slit 86a. The angle αa is greater than 90°. Preferably, the angle αa is greater than 120° and is in the range from 130° to 160°. Preferably, the angle αa is approximately equal to 150°.

Side 803 forms a side angle 802 β approximately equal to 150° with the side beams 8. The angle β exceeds 90°, preferably greater than 120°. Preferably, the angle β approximately equal to 150°.

The angles αa and β can have the same value. However, this is not a prerequisite.

Top Sa acute angle γ formed at the point of intersection of lines D801 and D802, shown in dashed lines, along�which are respectively the sides 801 and 802 of the parallelogram shown in Fig.3.

We denote a surface of the main element 82, which passes along the slot 86a. We denote a cut surface 84A, bounding the slot 86a. Thus, the slot 86a is located between the surfaces a and a. In particular, in cross section, regarded perpendicular to the longitudinal axis A8 of the beam 8, the traces of the surfaces a and a along the slit 86a, pass from the side 801 of the big sizes section S adjacent to the side 802 of the small size of S. Under section behind the surface a or a should understand the segment at the intersection of the cross section S and the surface a or a. In addition, the side 802 of the small size of the cross section S forms an acute angle γ with a side of larger design S.

The geometry of the end of the beam 8, which is from the side edges And can be transposed from the edge In due to the Central symmetry around the point of intersection of the diagonals of the parallelogram shown in Fig.3.

Fig.5 shows in more detail the end of the beam 8, which is from the side edges of V. the Gap 86b extends along the Central axis Z86b. The angle αb outside of the beam 8 from the side of the ribs In a relatively slit 86b, is formed between, on the one hand, the section 803b side 803 belonging to the segment 84b, and, on the other hand, the plot axis 86b, which takes place outside of the beam 8 beyond the side 803. The angle αb is on the outside of the beam 8 �on the side of the ribs In the pairing between the side 804 of the small size of the cross section S and the side 803 of the big sizes section S relative to the slit 86b.

Formed angle βb, located inside the beam 8 between the sides 801 and 804 of the parallelogram shown in Fig.3.

Formed the top of the Sb an acute angle γb at the point of intersection of lines D803 and D804, shown by a dotted line, along which are respectively the sides 803 and 804 of the parallelogram shown in Fig.3.

We denote 862b surface of the main element 82, which passes along the slot 86b. We denote 864b cut surface 84b, which runs along the slot 86b. Thus, the gap 86b is located between the surfaces 862b and 864b. In particular, the surface 862b and 864b are located along the cracks and 86b extend from the sides 803 larger design S to adjacent sides 804 of the small size, forming an angle γb with a side 801 of large size.

During operation 1 hydropower plant is under water, for example in the marine environment, and the stationary portion 5 connected to the stationary element, for example with the earth. The water flow F1 or F2 rotates the blades 4 around the axis X1 in one direction or another, that drives the alternator and produces electricity.

In the future, the water flow will be described for the case of flow F1. When water flows in the direction F2, is formed symmetrical flow.

When the flow F1 reaches the ribs And beams 8, which is the front edge of the beam 8, the flow F1 is divided into two �Asti F1 1and F12and continues moving in a direction of an edge, which forms the back edge of the beam 8. The first part F11flow F1 flows around the beam 8 along the side 803 and the second part F12flow F1 flows around the beam 8 at the level of the side 801.

At the level of the end 803, located near the ribs, formed by the area P1 of high pressure, and at the side near the ribs, formed the R2 zone of rarefaction. The pressure difference in the result of this increased pressure and this vacuum sucks part F11'the first part F11water flow F1 through the slot 86b. Thus, the water is held in the gap 86b from the end of the slit 86b adjacent to the sides 803, to the end of the slit 86b adjacent to the sides 804, then merged with the second part of F12stream F1 and flows along the sides 804 in the direction of an edge is the boundary layer of water running along the sides 801, 803 and 804 of the beam 8, stabilized, thanks to the slit 86b, which limits and even eliminates the formation of eddies Pocket. In the event flow F1 slit 86a is optional and only slit 86b contributes to the stabilization of the flow.

The presence of two slits 86a and 86b which are between the ribs and the ribs In the beam 8, allows to stabilize the flow F1 or flow F2 that is of interest in the case of the hydropower plant 1 which is a flow of alternating directions, for example, when the hydropower plant 1 operates on the tide or low tide.

Fig.6 shows a second embodiment of the beam 8, in which elements similar to elements in Fig.4 denoted by the same positions.

Beam 8 shown in Fig.6, has an angle αa, is approximately equal to 130° and a smaller angle αa of the beam 8 shown in Fig.4. The angle αa is greater than 90°.

The slot 86a of the beam 8 in Fig.6 is closer to the edge Rather than the slot 86a beam 8 shown in Fig.4. In addition, the beam 8 in Fig.6 has an angle β approximately equal to 130°. The angle β in Fig.6 is greater than 90° and less angle β beams shown in Fig.4.

Fig.7 corresponds to the third embodiment of the beam 8, in which elements similar to elements in Fig.4 and 5 are denoted by the same positions. Beam 8 shown in Fig.7, contains two segments 84A and 84A', spaced from the side edges And beams 8. Segment 84A' is closer to the edge Rather than cut 84A. First the remaining space between the main element 82 and a segment 84A forms a first gap with the axis 86a Z86a. Second, the remaining space between the segment 84A and cut 84A' forms a second slit 86a' with the axis Z86a'.

The angle αa, outside beams 8 and side edges And relatively slits 86a, is formed between, on the one hand, the plot a side 801 belonging to the segment 84A, and, on the other hand, the plot axis Z86a, moving to the outside of the beam 8 PR�good side 801.

The angle αa' on the outside of the beam 8 and side edges And relatively slits 86a', is formed between, on the one hand, the plot a' side 801 belonging to the segment 84A', and, on the other hand, the plot axis Z86a' passing out of the beam 8 beyond the side 801.

The angles αa and αa' are equal, and the axis Z86a and Z86a' slits 86a and 86a' parallel. However, in another embodiment of the invention, the angles αa and αa' may be different, since the slits 86a and 86a' do not intersect.

We denote a surface of the main element 82, which is located along the slot 86a. We denote a cut surface 84A which extends along the slit 86a. Thus, the slit 86a passes between the surfaces a and a.

We denote a' the cut surface 84A, which is located along the slot 86a'. We denote a' the cut surface 84A', which passes along the slot 86a'. Thus, the slit 86a' passes between the surfaces a' and a'.

Beam 8 shown in Fig.3, comprises at the level of each rib and the slit 86a or 86b, but in another, not shown embodiment, the beam 8 can contain only one of the slits 86a or 86b extending between the main element 82 and the only segment 84A or 84b. In this case, the slit 86a or 86b is located near the trailing edge of the beam 8, i.e. from the side of the ribs In the case of the flow F1 or from the side of the ribs And in the case of the flow F2. In this case the beam 8 can�to sabilizirovat the water flow F1 or F2 if water flows in one direction only.

In addition, since the slit 86a extends from the side 801 to side 802, axis Z86a may be more or less close to the edge A. in addition, in the third embodiment, the distance between the axes Z86a and Z86a' slits 86a and 86a' may be more or less large.

According to another, not shown embodiment of the invention, since the beam 8 includes at least one of the slits 86a or 86b, near each of its edges A and b of the beam 8 can contain a number of slots greater than or equal to zero, and the number of cracks at the level of each of the edges A and b of the beam 8 may be different. For example, the end of the beam 8, which is from the side edges And may contain a slit 86a, and the end of the beam 8, which is from the side edges, may contain two gaps 86b.

Since the segments 84A and 84b are subjected to greater mechanical stress than the main element 82, the segments 84A and 84b can be preferably made of a material with a higher mechanical strength than the material of the main element 82. For example, the segments 84A and 84b can be executed from high-strength steel, whereas the main element is made of mild steel, or Vice versa. In an embodiment of the invention the segments 84A and 84b are hollow, whereas the main element 82 is solid, or Vice versa.

Shown in Fig.1 hydropower installed�and 1 contains three beams 8 and five of the blades 4. In the embodiment 1 hydropower plant may contain a number of beams 8, than three, and the number of blades 4, than five.

The cross section of the slit 86a, 86a or 86b, considered in a plane perpendicular to the longitudinal axis A of the beam 8 may not be straightforward and, for example, to have a view of a portion of the curve. In this case, the axis Z86a, Z86a' or Z86b such gap 86a, 86a or 86b is defined as the average axis of the curve.

In addition, slits 86a, 86a' and 86b can pass along the longitudinal axis, which is tilted relative to the longitudinal axis A8 of the beam 8. Thus, the slit 86a, 86a' and 86b can be parallel or nearly parallel to the longitudinal axis A of the beam 8. In this sense, these cracks are generally parallel to the axis.

The distinctive features of the above embodiments of the and versions can be combined.

In an embodiment, the cross section S of the beam 8 can have a rectangular geometric shape, as a rectangle is a special case of a parallelogram. In this case, the angles αa and αb are no sharp corners and right angles.

1. Beam (8) securing the fairing (2) of the hydropower plant (1) having a section (S) in the plane perpendicular to the longitudinal axis (A8) of the beam, in the form of a parallelogram, characterized in that:
- contains at least one slit (86a, 86a', 86b), which basically runs parallel to prodelin�th axis (A8) of the girder (8),
- in section (S) perpendicular to the longitudinal axis (A8) of the girder (8), the traces of the surfaces (a, a, a', a') along the slit (86a, 86a', 86b) are from one of the parties (801, 803) larger design (S) to related parties (802, 804) of small cross-section dimensions (S).

2. Beam (8) of the attachment according to claim 1, characterized in that the side (802, 804) of small cross-section dimensions (S) forms an acute angle (γ, γb) with related party (801, 803) larger design (S).

3. Beam (8) of the attachment according to claim 1, characterized in that in a plane perpendicular to the longitudinal axis (A8) of the girder (8), angle (αa, αa', αb) located outside of the beam (8) from the side edges (A, b) pairing between a party (802, 804) of small cross-section dimensions (S) and party (801, 803) of large size section (S) relative to the slit (86a, 86a', 86b) and educated, on the one hand, the plot (a, A', 803b) parties (801, 803) of large size, located by the edge (A, b) relative gap (86a, 86a', 86b), and, on the other hand, the Central or middle axis (Z86a, Z86a', Z86b) slit (86a, 86a', 86b) exceeds 90°.

4. Beam (8) of the attachment according to claim 3, characterized in that in a plane perpendicular to the longitudinal axis (A8) of the girder (8), angle (αa, αa', αb) located outside of the beam (8), exceeds 120°, preferably is in the range from 130° to 160°, preferably approximately equal to 150°.

5. Beam (8) of the attachment according to claim 1, characterized in that in a plane perpendicular�Oh to the longitudinal axis of the beam, angle (β, βb), located inside the beam (8) and restricted party (801, 803) large dimensions of the parallelogram and the side (802, 804) of the small size of the parallelogram forming an obtuse angle (β, βb) with sides (801, 803) large size, greater than 90°, preferably greater than 120°, more preferably approximately equal to 150°.

6. Beam (8) of the attachment according to claim 1, characterized in that from the same side (801, 803) large dimensions of the parallelogram made at least two slits (86a, 86a').

7. Beam (8) of the attachment according to claim 6, characterized in that the slit (86a, 86a'), is made starting from the same side (801, 803) large dimensions of the parallelogram are parallel.

8. Beam (8) of the attachment according to claim 1, characterized in that the at least one slit (86a, 86a', 86b) is made, starting from each side (801, 803) large dimensions.

9. Beam (8) of the attachment according to claim 1, characterized in that the beam (8) is equipped with means of attachment for connecting two parts (82, 84A, 84A', 84b) of the beam (8) located on either side of one slit (86a, 86a', 86b).

10. Beam (8) of the fastening according to one of claims.1-9, characterized in that at least part (84A, 84A', 84b) of the beam (8) with side edges (A, b) pairing between a party (802, 804) of small cross-section dimensions (S) and party (801, 803) of large size section (S) relative to the slit (86a, 86a', 86b), made of a material having more �high mechanical strength, what part material (82, 84A) of the beam (8) located opposite to the edge (A, b) relative gap (86a, 86a', 86b).

11. Hydropower installation (1) comprising a wheel (3), made with possibility of rotation around the axis (X1), fixed fairing (2) covering the wheel, and at least one beam (8) securing the fairing that connects the fairing with the Central support (6) of the hydropower plant, characterized in that the beam (8) the fixtures are made according to one of claims.1-9.



 

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Power plant // 2502891

FIELD: power engineering.

SUBSTANCE: power plant comprises one or several energy units, comprising a body with a diffuser, a wind wheel or an impeller with blades, a power generator, a gear from a wind wheel to a power generator, including two pairs of conical gears, the first and second shafts. Each energy unit comprises a master conical gear fixed on the outlet end of the first shaft, two slave conical gears, each connected with its overrunning clutch, slave links of which are fixed on the second shaft connected via a multiplier and an elastic coupling with a power generator. The multiplier may be made in the form of a planetary row, the carrier of which is connected with the second shaft, a solar gear is connected to the power generator via an elastic coupling. The plant may be equipped with a manual and automatic controller of power generator rotation speed, the mechanical part of which is made in the form of a planetary row, the solar gear of which is connected to the output shaft of the multiplier, an epicycle is connected with the worm gear wheel, the worm of which is connected to an actuating motor, and the carrier of the planetary row via a row of kinematic links is connected to a conical geared wheel that sits as movable on the shaft of the impeller and is engaged with gears that sit on axes and connected with blades.

EFFECT: plant is reliable to overloads under storm weather conditions.

22 cl, 5 dwg

FIELD: power industry.

SUBSTANCE: invention refers to hydroelectric power industry, particularly to methods of small river and artificial flow utilisation for electric power generation. Method of midget hydroelectric power plant construction involves construction of hydroelectric aggregates in the form of converters of kinetic water flow energy to potential hydraulic shock energy, and rotating drive of electric power generators. Water ducts of hydroelectric aggregates feature walls moving in radial direction and injectors with actuators driven in reciprocal motion by water duct walls moving in radial direction. Electric power generator drive is made in the form of propellers rotated by energy transferred from injectors to propellers by intermediate energy carrier, a work medium other than water.

EFFECT: simple method of midget hydroelectric power plant construction in low-intensity water flows.

4 cl, 1 dwg

FIELD: power industry.

SUBSTANCE: at implementation of a construction method of OTPP combined with SP 1, all the component parts of the object being built in the form of ready-made reinforced concrete or metal blocks from the works to the assembly site are delivered by means of a float-on method. Sequence of construction work is started from an earlier installed supporting and restricting barrier consisting of a metal, reinforced concrete or wooden grooved pile projecting in an underwater position through the height sufficient for fixed retention of flooded threshold blocks with orthogonal turbines 4, including foundation of SP 1. First, assembly of the foundation is started by afloat attachment into a common structure of a rectangular shape, the margin of buoyancy of which is sufficient for retention of posts for laying of board panels. Assembly of SP 1 is completed by installation of double-leaf gate 7. Gate 7 is left open till completion of work on installation of threshold blocks with turbines 4 connected through shafting 5 to generators 6 installed on the shore.

EFFECT: construction of HPP on navigable rivers, where it is impossible to erect dams and flood gates as per local conditions.

3 cl, 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: construction.

SUBSTANCE: method includes development of the first 28 safety border and the first physical protection 36 against penetration of biological underwater objects (BUO) and facilities of their delivery, the first treatment of return service water 37 from mechanical (MA) and biological (BA) admixtures, the first protection of fish, including young fish, the first cooling of return service water. The second 29 safety borders are established, identical to each other and similar in purpose at the inlet of each water supply canal and subsequent supply: the second physical protection 39 against penetration of BUO, the second treatment of return service water from MA and BA, the second protection of fish, the second cooling of return service water. The third 30 safety borders are established, identical to each other, at the inlet to water intake windows and subsequent supply: the third physical protection against penetration of BUO, the third treatment of return service water from MA and BA, the third protection of fish, the third cooling of return service water and its first acoustic degassing. The fourth 31 safety borders are established, identical to each other, at the outlets of water supply canals identical to each other and subsequent supply: the fourth physical protection against penetration of BUO, the fourth treatment of return service water from MA and BA, the fourth protection of fish and the fourth cooling of return service water. The fifth safety border 32 is created in the common water drain canal and subsequent supply of the fifth physical protection against penetration of BUO and facilities of their delivery, the fifth treatment of return service water from MA and BA, the fifth protection of fish, especially in the period of their spawning, and the fifth cooling of return service water.

EFFECT: distant detection, valid classification and accurate identification of spatial coordinates of acoustically barely visible BUO under conditions of higher surrounding noise of anthropogenic and natural character, intensive reverberation at distant detection, hydroacoustic displacement of BUO, failure of management systems of underwater carriers of BUO, mechanical protection of a border against penetration of above-water and underwater carriers of BUO, multi-stage treatment of water from MA and BA, multi-stage cooling of water, used for process purposes, environmental safety.

12 dwg

FIELD: energy.

SUBSTANCE: hydroelectric power station comprises a pipe-water passage 2 with a hydraulic turbine 6 mounted in it, connected to the generator 7. The pipe-water passage 2 is mounted in the water reservoir and laid on the bottom of the water reservoir to the platform 8 attached to the coast. The pipe-water passage 2 is additionally provided in the upper part, which rises above the water reservoir level, with the axial pump 9 with a controllable pitch propeller. The hydraulic turbine 6 is mounted in the lower part of the pipe-water passage. The pipe-water passage 2 is fixed at the bottom of the water reservoir and has the openings 4 for entry of water. The energy complex consists of several hydroelectric power stations united by the common platform and having the necessary capacity adjustable by turning on and off the pumps.

EFFECT: group of inventions enables to produce electrical energy in different climatic conditions, with the possibility of increasing the unit capacity by increasing the length of the waterfront of the hydroelectric power station.

8 cl, 5 dwg

FIELD: power engineering.

SUBSTANCE: hydraulic power plant of conveyor type submerged into a fluid medium comprises a frame with at least two pairs of guides and shafts installed on it at the opposite sides as capable of rotation. One of the shafts is kinematically connected with a power generator. A flexible element that embraces the shafts is made in the form of a closed chain gear with fixed blades equipped with axes and rollers. The hydraulic power plant is placed in a channel equipped with gateways along the flow with partial submersion of the body into the fluid medium. The flexible element comprises joined links-carriages with combined blades, which consist of at least four V-shaped plates arranged in pairs opposite to each other. Plates in each pair are parallel to each other. Shafts are placed at different levels, and wheels are installed at their ends. Wheels of the shaft arranged below are made as geared and of smaller diameter compared to wheels of the other shaft. The shaft with wheels of the smaller diameter is arranged upstream compared to the shaft with wheels of larger diameter.

EFFECT: increased reliability and capacity of a hydraulic power plant.

4 cl, 6 dwg

FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering and may be used in construction of hydraulic power plants in any area. The method includes construction of a cascade of water reservoirs with small capacity that are built at side river affluents, in area folds or in ravines, aside from the main river bed. Water reservoirs and their dams are arranged at one or both sides of the river at such distance from each other so that water horizons of each subsequent water reservoir of the cascade, starting from the river head, are lower than the bottom of the previous one. All water reservoirs of the cascade are connected to each other by discharge water conduits, water intakes of which are arranged in the lowest points of the dam of the previous water reservoir, and the end, with a hydraulic turbines or hydraulic turbines, for instance, active, cone and generators, on the dam or shores of the subsequent water reservoir, with drainage of water in it from the turbines. The first water intake of the HPP cascade is made, for instance, as a side one from the main river bed.

EFFECT: invention provides for river protection as an HPP is constructed on it in its original form, reduced adverse effects from water reservoirs, preserved ecology of the area, where the HPP is being built, provides for the possibility to obtain high HPP capacities from the river without accumulation of high amount of water in water reservoirs, and elimination of domino effect in damage of one or several dams of the HPP cascade.

1 dwg

FIELD: heating.

SUBSTANCE: invention relates to the field of power engineering and may be used in return systems of water supply to thermal power plants with a cooling pond. The method includes discharge of warm water into the cooling pond, its cooling and intake of cooled water. To reduce temperature of water taken, barriers are installed onto the bottom of the cooling pond between the discharge and water-intake channels in the amount from 1 to 3, one end of which rests against the shore of the cooling pond of the thermal power plant, and the other one stretches towards the centre of the water area of the cooling pond. Installed barriers forward the natural flow of the circulating water from the thermal power plant shore to the centre of the pond. The height of barriers exceeds the water level in the pond by 0.5 m.

EFFECT: higher efficiency of cooling of discharged circulating water of a thermal power plant.

1 dwg

FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering and may be used in construction of hydraulic power plants in restricted conditions. The proposed task is solved by the fact that the proposed design of the hydraulic power plant building may locate a large number of units arranged in the horizontal plane at one elevation. The hydraulic power plant includes a turbine hall 1 and hydraulic units 2 arranged in rows. Hydraulic units 2 are arranged in one horizontal plane so that hydraulic units of the next row are placed in the gaps between hydraulic units of the previous row. Arrangement of hydraulic units in two rows, spiral chambers of which are displaced relative to each other, makes it possible to approach axes of the units towards to each other, and thus to reduce length of the HPP turbine hall. Arrangement of the hydraulic power plant building may be across the river bed or at the angle to the river bed.

EFFECT: reduced length of an HPP building results in reduction of capital intensity of the entire hydraulic engineering facility.

3 cl, 2 dwg

FIELD: power engineering.

SUBSTANCE: method to control a hydraulic accumulating station (HAS), comprising at least two energy systems, one of which is energy excessive, the other one - energy deficit, and at least two units, on the shaft of each one there is a reversible electric machine and a reversible hydraulic machine, consists in the fact that stator windings of the electric machine of the first unit are connected to the first energy system in the motor mode with the hydraulic machine in the pump mode. Stator windings of the electric machine of the first unit are connected to the energy excessive system. Simultaneously stator windings of the electric machine of the second unit are connected to the energy deficit system in the generator mode with the hydraulic machine in the turbine mode.

EFFECT: higher usage of installed HAS equipment and reduced HAS payback period.

2 cl, 2 dwg

FIELD: hydraulic and hydropower engineering, particularly for building water-retaining structures to provide power supply to small settlements and farms.

SUBSTANCE: method involves assembling flexible apron assembly consisted of flexible floor apron and flexible downstream apron in watercourse; securing thereof to watercourse bottom by anchors. Water outlet assembly including hydroelectric generator arranged inside it is secured to floor apron and downstream apron by rigid ties. Connected to water outlet assembly by ties are water retaining shell and rope system secured to anchor poles located on watercourse bank.

EFFECT: reduced time of structure assembling and costs for electric power generation.

2 dwg

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