Hydroelectric

 

(57) Abstract:

Hydroelectric power is used to produce electric power by converting the kinetic energy of the flow. The impeller of the turbine is made with an integral radial blades. The blades are secured to the disks reel drum. Composite blades are made from the side of the focusing plate and the Central jet plate. The focusing plate form the edges of the Central channel. Jet plate is installed with a gap with respect to the focusing plates and forms a peripheral channels. Jet plate is perpendicular to the axis of the Central channel. The focusing plate can be positioned at an angle to the disks with the formation of the confuser in the direction of flow. The configuration of the jet plate represented in several ways. The design allows more efficient use of energy flow through the energy use of water hammer. 6 C.p. f-crystals, 7 Il.

The proposal relates to hydropower.

Known hydropower plant with successively installed in the direction of flow impellers with radial blades (SU, the author witnessed also to use the energy flow.

The closest analogue is the unit that contains the intake site, the inlet conduit and at least one hydraulic turbine vane impeller (SU authorship 1728522 A1, class F 13/08 03 In).

Known hydraulic unit has a complex structure due to nodes that provide alignment and stability of the hydraulic turbine. Furthermore, the design of the blades does not allow more efficient use of energy flow.

The objective of the proposal is to increase the capacity of the turbine due to more efficient use of energy flow.

The technical solution of the problem is that the impeller of the hydraulic turbine has the form of a reel drum, and each blade made of composite lateral focusing of the plates forming the Central channel, and the Central jet plate, and plates secured to the disks of the drum and to form an optically opaque system.

The Central channel formed by the lateral edges of the focusing plate, and the Central jet plate is installed with a gap with respect to the focusing plates symmetrically along the axis of the Central is and is not larger than the total area of flow cross-sections of the peripheral channels.

In addition, the side of the focusing plate is installed at an angle to the surface of the drive drum with the formation of the confuser in the direction of flow. And the Central jet plate may be performed either concave towards the flow, or U-shaped with an arrangement of shelves towards the stream.

The focusing plate can be performed with device rotation for adjustment of the angle between the plate and the disk surface of the drum. The regulation can be carried out by any known method and device, and in these materials is not considered.

The invention is illustrated by drawings, where Fig.1 shows schematically hydroelectric, side view; Fig.2 is a top view, in Fig. 3 - impeller turbines in the context of Fig.4 - scheme of work composite blades in the hydraulic flow of Fig.5 is an embodiment of a composite blade with straight plates; Fig.6 - same, but with the location of the focusing plates at an angle and performing a reactive plate concave, and Fig.7 is an embodiment of the jet plate is U-shaped.

Hydroelectric contains the intake node 1, the inlet conduit 2, through consistently raspolojennaya 3 tightly coupled to the intake conduit 2, and the impellers are made in the form of a reel drum 5, is equipped with composite blades, each of which consists of the side of the focusing plate 6 and the Central plate 7.

Side of the focusing plate 6 their edges to form a Central channel. Jet plate is installed with a gap 9 in relation to the focusing plates 6 and forms a peripheral channels 10, the total area of the passage sections which is not less than the cross-section area of the Central channel.

Side of the focusing plate 6 can be positioned at an angle.

When performing the focusing plate 6 at an angle to the disc surface 11 of the plate 6 is formed in the direction of flow of the confuser.

The Central jet plate 7 may have a different configuration depending on the execution of the focusing plate 6. Plate 7 can be made straight or concave towards the flow (Fig.6), or have a U-shaped form with an arrangement of shelves towards the stream.

The implementation of the blades of the impeller compound allows more efficient use of energy flow through the energy surge that occurs when the overlapping stream lapaco characteristics of hydraulic turbines, which is governed by the configuration and design parameters of the composite blades, the configuration of the composite blade is formed relative position of the focusing plates 6 and reactive plates 7, the design parameters of the linear dimensions of the plates 6, 7, and the distance from the diversion unit 1 to the first turbine 3 and the axes of the subsequent turbines 3 are calculated from the condition optimization of the hydrodynamic characteristics of all of the turbines 3, while their work.

Hydroelectric works in the following way. From the intake site 1 hydraulic flow 4 flows into the inlet conduit 2 and then passes through consistently set the number of turbines 3, the axis of rotation are at right angles to the axis of the hydraulic flow 4. When this turbine 3 is hermetically coupled to the intake conduit 2. The performance of the wheels in the form of a reel drum 5 with composite blades that allows the turbine 3 in the combined reactive-active mode. This is due to the fact that the composite blades are subjected to short-time hydraulic shock in the most efficient operating point. Each composite vane, sottoriva hydraulic flow 4, do not tear it off, and flows through the Central channel 8 and the peripheral channels 10, taking on the energy of the resulting short-time hydraulic shock. The power of Nsiand duration of tsiwater hammer are the hydrodynamic characteristics of the water turbine 3, which is governed by the configuration and design parameters of the composite blades.

When he reached the composite turbine blades 3, the hydraulic flow 4 first interacts with the focusing plate 6, so that is the focus of hydraulic flow 4 through the transfer of kinetic energy to the focusing plate 6, which play the role of jet turbine blades.

Accordingly varies plot the distribution of velocities and the energy performance of hydraulic flow.

After passing through the focusing plate 6, a focused stream 4 meets in its path jet plate 7, which completely covers his section, but leaves free peripheral channels 10 to overflow the top and bottom. The total cross-sectional area of the channels 10 is equal to or not smaller than the sectional area of the focused stream 4 (Central the two perpendicular jet, what is the brief stop focusing hydraulic flow 4, in consequence of which comes first phase hydraulic shock - stop and create a shock pressure, which is transmitted to the jet plate 7. This causes a shift in the direction of movement focused hydraulic flow 4 and, accordingly, rotation of the hydraulic turbine.

After the first phase water hammer, according to the postulate N. E. Zhukovsky, must come second phase - the phase of expansion. But starting to expand, hydraulic flow 4, reaching the edges of the jet plate 7, it starts to wrap around it. Meanwhile, the composite blade of the impeller is displaced in the direction of travel, thus opening the passage of hydraulic flow 4. Consequently, the second phase of the hammer is extinguished, and the third phase never occurs that causes the onset of the fourth phase of the restoration movement to the condition that existed before closing, after which physical process is repeated again.

Proposed construction of hydroelectric power plants, with the impellers of the turbine with composite blades, allows more efficient use of energy flow, thereby increasing mod and at least one turbine with blade impeller, characterized in that the impeller has the form of a reel drum, and each blade made of composite lateral focusing of the plates forming the Central channel, and the Central jet plate, and plates secured to the disks of the drum and to form an optically opaque system.

2. Hydroelectric power plant under item 1, characterized in that the Central channel formed by the lateral edges of the focusing plate, and the Central jet plate is installed with a gap with respect to the fixing plates symmetrically along the axis of the Central channel with the formation of peripheral channels.

3. Hydroelectric power plant on the PP.1 and 2, characterized in that the area of the bore of the Central channel is made not larger than the total area of flow cross-sections of the peripheral channels.

4. Hydroelectric power plant on the PP.1 to 3, characterized in that the side of the focusing plate is installed at an angle to the surface of the drive drum with the formation of the confuser in the direction of flow.

5. Hydroelectric power plant under item 4, characterized in that the side of the focusing plate is provided with a device rotation for adjustment of the angle between the plate and the drive drum.

6. Hydrobotany.

7. Hydroelectric power plant on the PP.1 to 5, characterized in that the Central jet plate made towards the flow, U-shaped, with an arrangement of shelves towards the flow.

 

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FIELD: oil and gas extractive industry.

SUBSTANCE: device has metallic hubs of stator and rotor, wherein crowns of stator and rotor are concentrically pressed. Crowns of stator and rotor are made of durable ceramics and are additionally equipped with connections, allowing to exclude non-controlled turning of crowns in hubs and spontaneous axial displacement thereof.

EFFECT: higher reliability and efficiency.

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