Hydraulic turbine

FIELD: machine building.

SUBSTANCE: hydraulic turbine comprises horizontal shaft 4 with curved vanes 5 fitted thereon. Half of said vanes does not interact with flow because they are located inside large seat 2 while vanes interacting with flow have their bulge directed upward. Wall 6 of larger seat 2 opposite shaft 4 changes into flange 8 varying flow direction 12 toward the side opposite the wall of tube 1. This prevents depositions effluents sediments nearby shaft 4 while peripheral part of vanes 5 is self-cleaned due to centrifugal force, its configuration and that of seat 2.

EFFECT: reliable operation.

3 dwg

 

The invention relates to hydraulic engineering, in particular to hydraulic turbines that convert the potential energy of wastewater in the sewer system of multi-storey buildings in electric.

Known turbine active actions (water mills), the rotor of which is mounted on a horizontal shaft in the form of a wheel with multiple blades mounted around it (see Twidell J., The Weir A. "Renewable energy sources", Energoatomizdat, 1990, s). The main disadvantage of these turbines is that they are quieter over low volumetric capacity of water flowing on the tray with river dams. Currently, the possibility of construction of such dams have been exhausted, as it flooded increasingly scarce agricultural land.

This disadvantage is partially removed in the turbine, the rotor of which is made of disks placed between the blades forming buckets (RF patent No. 2146336, IPC F03B 1/00). The disadvantage of this design is that it does not solve the problem of shortage of water needed to generate electricity, although it has a higher efficiency. In connection with a broader orientation to the use of secondary energy resources, water heavily polluted with solid particles (in particular, Antialias wastewater energy in multi-storey buildings), use this turbine is ineffective. This is due, in particular, with the deposition inside the buckets of the solid components contained in household wastewater. This can happen unbalance of the turbine and a failure in its work.

The objective of the invention is the efficient use of energy wastewater.

This problem is solved in a hydraulic turbine mounted within the vertical conduit containing a rotor with a horizontal shaft and blades located around it, according to the invention, the conduit is a part of the sewer riser with large and small local pockets located in the plane of rotation of the turbine blades, and half of the blades is located inside a large pocket, with opposite relative to the axis of rotation of the wall of the big pocket is an arc of a circle, passing in the lower part of the inclined straight line, and at the top - in visor with negative angles of inclination of the surface directed to the turbine, the blades of which have a curved profile and oriented outside large pocket bulge upward.

The resistance in extreme conditions the waste collector is ensured by the fact that when interacting with peak flow changes its direction and acts on the blade at an angle, not allowing solid including enum to be deposited on the blades near the axis of rotation and to get inside his pocket. The shape of the blades and the centrifugal force allows the elements of the turbine to self-clean in the process.

Thus, it is the totality of features of the invention, distinguishing it from the prototype, ensures the achievement of the technical result is reliable turbine operation in extreme conditions of the sewer.

The invention is illustrated by drawings, where figure 1 shows the General layout of the device, figure 2 - design of turbines and pockets, figure 3 - interaction of water flow reflected from the canopy, with the blade of the turbine.

Hydraulic turbine (1, 2) includes sewer pipe 1, in cross section which is made large and small pocket 2 pocket 3. Inside a large pocket 2 is provided with a turbine shaft 4 on which are mounted the blades 5 having a curved shape and is oriented in the working area (inside sewer pipes) by the convexity upwards. Opposite with respect to the shaft 4, the wall of the pocket 6 is made in the form of an arc of a circle and passes into the lower part of the inclined surface 7, the angle of which is greater than a critical angle clutch solids contained in the wastewater, with its material. In the upper part of it goes into the visor 8 outside large pocket 2 inside the pipe 1. Opposed relative to the axis of rotation of the small wall pocket 3 made in the form of the iGO circle. The turbine shaft 4 is connected to the generator 9 (Fig 1).

We offer hydraulic turbine operates as follows. The flow of wastewater 10, falling on the blade 5, according to the rotational movement of the shaft 4 of the turbine in the direction of arrow 11. The shaft 4 rotates the rotor of the generator 9, the result of which produced electricity. The flow of waste water 10 interacting with the peripheral part of the blade 5, the effect on them at an angle close to 90°. In this regard, the maximum torque on the shaft 4. In addition, minimizes the likelihood of sediment deposition near the shaft 4, since the centrifugal force and gravity contribute to the purification of the blades 5 in the lower part of the trajectory of their movement. Due to the high viscosity of solids included in the composition of wastewater, natural purification of the blades 5 may continue after their entrance into a large pocket 2. While falling from the blades fragments solids fall on the inclined surface 7 of the wall 6 large pockets 2 and slide it to the bottom of the pipe 1. Part of the flow of waste water 12, moving close to diametrically opposite in relation to the thread 10 of the pipe wall 1, interacting with visor 8, changes the direction (along arrow 13, Fig 3). In this regard, the interaction of the flow with the blade 5 is at an acute angle α to the normal 14 held to the top p of the surface of the blade. Therefore, reflected from the blades of the thread 15 is directed to the pipe wall 1 in the area of small pocket 3, the surface of which drains into the lower part of the pipe 1 or interacts again with the blades 5. Thus, the area near the shaft 4 is reliably protected from deposits of solids contained in the wastewater that provides reliable and efficient operation of hydraulic turbines.

Hydraulic turbine mounted within the vertical conduit containing a rotor with a horizontal shaft and blades located around it, wherein the conduit is a part of the sewer riser with large and small local pockets located in the plane of rotation of the turbine blades, and half of the blades is located inside a large pocket, with opposite relative to the axis of rotation of the wall of the big pocket is an arc of a circle, passing in the lower part of the inclined straight line, and at the top in the visor with negative angles of inclination of the surface directed to the turbine, the blades of which have a curved profile and is oriented outside large pocket bulge up.



 

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EFFECT: provision of effective and reliable operation.

3 cl, 4 dwg

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