Turbine assembly

FIELD: machine building.

SUBSTANCE: turbine assembly for water power generation comprises, at least, two twin auger turbines 2, 4 with variable-inclination attachment 10, floatability component, bottom support 12 and elements to transmit power to power generator 22. Two twin auger turbines 2, 4 feature alternate auger helix pitch and relative overlap.

EFFECT: simplified process and design for relatively shallow waters.

6 cl, 4 dwg

 

The technical field to which the invention relates.

The present invention relates to turbine installation and, more specifically, to a turbine installation, designed for obtaining energy from water flow. This unit contains a screw (screw) turbine, equipped with means for fastening with adjustable slope, component, providing buoyancy, and ground support, as well as the elements needed to transfer energy to power the car.

The level of technology

It is well known that currents such as tidal, significant quantities of energy. However, it turned out that the extract of these trends in more or less practically important volume is associated with significant problems.

In accordance with the prior art use the so-called tidal mill in which the seabed is placed similar to a windmill design with blades that overlap a relatively large area. In the process, there are significant efforts that should be covered is large and heavy structure of the tower. In addition, some tower designs known from the prior art, protrude above the sea surface, and this can produce a bad impression and makes it difficult passage of ships.

Disclosure of inventions

The task, which is directed from reenie, is to eliminate or reduce at least one of the above mentioned disadvantages inherent in the prior art.

According to the invention this problem is solved by the features set forth in the following description and in the accompanying formula.

Proposed turbine installation, designed for the release of energy from the water flow and comprising a screw turbine, equipped with means for fastening with adjustable slope, component, providing buoyancy, the bottom support and the elements needed to transfer energy to power the car. While the proposed turbine plant comprises at least two parallel screw turbine.

The feature of the specified turbine installation is that the adjacent screw turbines have the opposite direction of the pitch of the helix of the auger and are mutually overlapping. The presence of the transmission of the connection node between the turbines ensures that they will rotate at the same speed.

This arrangement allows you to make the center distance between neighboring turbines less than their diameter, i.e. to reduce the flow cross-section between them, and it improves the flow of water. Two screw turbines rotate in opposite directions, i.e. are symmetric impact of flowing water.

<> Provides the opportunity to install energy machine, for example, coaxially relative to the Central axis of the screw turbine or in another position. The speed energy of the machine relative to the speed of the screw turbine can be set using the gear ratio of the transmission node that transmits energy from the turbine to the car.

Another feature of the turbine installation is attaching it to the bottom support can be rotated. Thanks to the installation of a standalone set in the direction of water flow. In addition, relative to the horizontal plane it is located at an angle, which has a favorable influence on the choice of the pitch of the helix of the screw turbine. The specified angle is controlled by adjusting the buoyancy of the unit, depending on the hydrodynamic force applied thereto by the flow of water.

A further feature of the turbine installation is that component that provides buoyancy, formed screw turbine. For example, this turbine can be at least partially made of a material having a density less than the density of water.

Another feature of the turbine installation is that for coupling with the turbine bottom bearing is equipped with quick connection node. In the whole plant, except the bottom of the ora, it is relatively easy to disconnect and move between the said support surface, for example, along one or more cable guides.

Bottom bearing can be formed the basis of known construction, for example, suction anchor. This bearing must be equipped with the necessary nodes for transmitting energy from an energy machine. In a preferred embodiment, the energy machine is an electric generator, but may represent, for example, a pump.

Provides the ability to maintain the desired angle between the screw turbine and a horizontal plane by controlling the output power of the machine. Reduced output power, creating the effect of increasing the buoyancy, will try to turn the turbine installation in vertical position with increasing angle relative to the horizontal plane.

Due to the fact that the turbine installation is held in an inclined position due to the buoyancy and Autonomous coordinate its position with the direction of flow, the influence of bending moments on the bottom bearing slightly. Efforts transmitted to the bearing are mainly due to the tensile load transmitted from the holder with adjustable slope.

Water flowing in the direction facing toward leading the WMD thread sections screw turbine, constantly putting pressure on the turbine. Such pressure is applied mainly to the turbine sites located offset from the Central axis of the turbine in the direction of the neighboring turbines. Due to the above mentioned interaction between the two turbines will be provided with a symmetrical distribution of energy, resulting in turbine installation independently as desired coordinate its position with the direction of flow.

It is preferable to make the cross section of the screw turbine airfoil. In this case, the water flowing along the screw turbine, when interacting with the specified profile creates a lifting force and the corresponding component of this force tends to rotate the turbine around its axis.

Compared with the prior art turbine installation according to the invention provides significant simplification of the problem of obtaining energy from the flow of sea water. Because the bottom bearing is not subjected to bending moments, the design is greatly simplified. In addition, turbine installation according to the invention is well suited for use in relatively shallow areas and therefore presumably could also be applied and on the rivers.

Brief description of drawings

The following example shows a preferred variant implementation of izaberete the Oia, illustrated in the accompanying drawings, of which:

1 schematically illustrates a turbine installation according to the invention,

figure 2 schematically illustrates a turbine installation according to the invention in side view,

figure 3 schematically illustrates the installation shown in figure 2, in the form of the arrows II-II (shown in figure 2), i.e. from the end,

figure 4 illustrates a screw turbine section.

The implementation of the invention

In the above drawings numeric label 1 corresponds to the turbine installation comprising a first screw turbine 2 and the second screw turbine 4. These turbines are made to rotate around their axes 6 and 8 respectively.

Turbine 2, 4 are supported by the tool 10 for fastening with adjustable slope, attached to installed in the seabed bottom 14 of the support 12. The tool 10 is made to rotate around a vertical axis 16 relative to the support 12, as well as turning around the horizontal axis 18.

Twin screw turbine 2, 4, having the opposite direction of the pitch of the helix of the auger and rotating in opposite directions, are connected to each other transmission node 20.

Each of these turbines 2, 4 are joined to the corresponding energy machine 22, which in this example, the preferred option implementation is the th electric generator. Necessary wires not shown.

In the bottom support 12 posted by swivel means 24 for mounting, equipped with a quick release locking unit for connection with a support 12 relatively simple manner known per se, and breaking with the movement between the support 12 and the surface of the water through cable guides, not shown in the drawings.

Figure 4 shows a cross-section 26 of the first screw turbine 2. The specified section 26 attached to the aerodynamic profile, which causes the water flowing approximately parallel to the section 26, to create attached to the turbine 2 lifting force. The result is a moment of rotation around the axis 6 of the first turbine 2.

Screw turbine 2, 4 are S-shaped lifting spiral auger and with the angle of ascent of the spiral (see figure 2).

These turbines 2, 4 are made of relatively light material and, thus, have the buoyancy.

If the water surrounding the turbine installation 1 is standing, the buoyancy of the screw turbines 2, 4 will tend to rotate the unit 1 around the horizontal axis 18 in the position in which the axes 6, 8 turbines take a vertical direction.

With increasing water flow position of the turbine plant 1 is adjustable relative to the flow direction by its rotation around the vertical axis 16. Simultaneo effort, make a thread, try to deploy 1 (type turbine-turbine) around a horizontal axis 18 so that the axis 6, 8 turbines amounted to a horizontal plane, the angle "b" (see figure 2).

In a preferred embodiment, the angle "b" is approximately equal to the angle of ascent of the spiral auger.

The force applied by the current water and affecting auger turbine 2, 4, puts them in rotation around their axes 6, 8, resulting in the energy of the machine 22 is an energy.

1. Turbine installation (1) for obtaining energy from water flow, comprising a screw turbine (2, 4) with the tool (10) for fastening with adjustable slope, component, providing buoyancy, bottom bearing (12) and the elements needed to transfer energy to the energy machine (22), and turbine installation (1) contains at least two parallel screw turbine (2, 4), characterized in that two adjacent screw turbine (2, 4) have opposite directions of the pitch of the helix of the auger and are mutually closing.

2. Installation according to claim 1, characterized in that the component that provides buoyancy, formed screw turbine (2, 4).

3. Installation according to claim 1, characterized in that the turbine installation (1) attached to the bottom support (12) can be rotated.

4. Installation according to claim 1, characterized in that the bottom is the time (12) equipped with quick-connection node for connecting with the installation of (1).

5. Installation according to claim 1, characterized in that mounted for movement between the surface and the seabed (14).

6. Installation according to claim 1, characterized in that the cross section (26) of the screw turbine (2, 4) attached to the aerodynamic profile.



 

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