SU1728522A1 - Hydraulic plant - Google Patents

Abstract

Use: in hydropower. SUMMARY OF THE INVENTION: A hydraulic turbine is connected to a shaft of an electric generator with a rack and pinion gear and mounted on a support bearing. The blades of the turbine are made curvilinear and fixed between the inner and outer rims. The annular turbine chamber is made in the form of a concreted forehead that was open on top. The turbine is located horizontally and placed on the pontoons inside the turbine chamber. Bearings are placed between the outer rim and the walls of the chamber. The blades in the lower part are fixed on pontoons. A toothed rake is made on the top of the outer rim. The generators are placed symmetrically to the axis of rotation of the turbine on the outer side of the rim, and flywheels are mounted on their shafts. The supply conduit is inclined, tapering downstream and connected tangentially to the chamber. At the bottom of the gutter, at a distance exceeding 5/6 of the arc of a circle from the point of connection of the supply conduit, there is an outlet opening located at a distance of 1/9 of the arc of a circle. The diverting water-mats are connected to the hole and are made expanding along the flow. The pontoons are made of plastic. 1 hp f-ly, 4 ill. (Ls

Description

This invention relates to hydropower.

The aim of the invention is to increase the power of the hydraulic unit.

FIG. Figure 1 shows the layout of the supply conduit dividing the guide conduit into two streams to the energy parts of the Lavr Devtov hydraulic units, as well as the placement of hydraulic structures in the river bed; in fig. 2 - hydraulic unit (without external wall of the annular turbine chamber) with a guide section, supply conduit, section of the outlet in the bottom of the annular turbine chamber of the discharge opening (on the angle arc a), diverting conduit (on the angle arc) between the discharge opening and the guide section of the supply conduit), top view; in fig. 3 shows section A-A in FIG. 2; in fig. 4 - hydraulic unit, view in axonometric view.

The hydropower unit Lavra Devtova contains a supply conduit 1. made inclined, gradually tapering with concrete walls and bottom, passing into the guide section 2. Being accelerated to 5–15 m / s, the water flow passes to the energy part of the hydropower units Lavra Dev each of which consists of an annular turbine chamber 3, to which a feed

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a conduit 1 through a horizontal guide section 2. Inside the annular turbine chamber 3 there is a horizontal turbine 4 consisting of curvilinear blades 5 rigidly fastened in the upper outer part with a narrow outer rim with a rack mounted on it, on which to the power extraction shaft 7 rotational motion is transmitted by means of gear 8, rotating rotors of electric generators 9 with powerful flywheels 10.

In order to ensure the operation of the Lavra Devtova hydraulic unit, the water level is raised by 3-5 meters using the riverbed for navigation, fish passes and ice and water catchment. FIG. 1 shows the sluice gates 11, the navigable channel 12. the channel 13 of water-collecting and fish passes 14. The annular turbine chamber 3 has an outlet opening 15, which passes into an inclined concreted outwardly extending flow conduit 16. The device of the horizontal turbine 4 is characterized by the fact that its design includes one internal rim 17 in the form of a solid wall,; which rigidly attached blades 5.

For the centering and stable operation of the turbine 4 between the outer narrow rim with the toothed rack 7 additional bearings 18 are placed, limiting the horizontal and vertical play, the thrust bearings 19 are placed under the frame 20 of the turbine 4, if frame 20 is used. Frame 20 is absent in large-scale turbines. To reduce the resistance of the turbine 4 in the lower part of it, the ring pontoon 21 is attached to the rim 17, and the ring pontoon 22 is rigidly attached to the lower part of the blades b.

The hydraulic unit is used as follows.

The water flow raised to a height of about 3-5 m is accelerated at the inlet duct 1, which is made obliquely, gradually tapering with the concrete walls and bottom and passing to the horizontal guide section 2, having a speed of 5-15 m / s: The driving force of water on the turbine blades is the velocity head He, which is characterized by the formula Hc V2 / 2g, where V is the flow rate; g - acceleration of free fall - 9.81 m / s. Considering that the proposed design of the annular turbine chamber 3 uses the kinetic inertial force of the water flow from the supply conduit 1 from the outlet 15, for at least 300 ° of the circumference of the annular turbine chamber 3 or 5/6 of its circumference, then in each second, use the velocity head of the moving water mass exceeding the value of Q, the power N of the proposed hydraulic unit

Dev Devtova Lavra is defined by the formula

N KQHcg 7,

where K is the number of Q values on the working part of the annular turbine chamber 4; G - efficiency.

Claims (2)

1. A hydraulic unit comprising a hydraulic turbine connected to the shaft of the electric generator by means of a rack and pinion gear and mounted on a support bearing, and a supply conduit, while the turbine blades are curved and fixed between the inner and outer rims, characterized in that increase the power, the hydraulic unit is equipped with an annular turbine chamber, made in the form of a concrete chute open at the top, two annular pontoons, additional generators, flywheels diverting water m and additional bearings, with this. turbine, is located horizontally, placed on the pontoons inside the turbine chamber, additional bearings are placed between the outer the rim and walls of the turbine chamber, the turbine blades in the lower part are fixed on the pontoons, the gear rack is made on the upper part of the outer rim, the generators are placed symmetrically with the axis of rotation turbines on the outer side of the rim, flywheels are mounted on their shafts, the supply conduit is inclined, tapering downstream and connected to the turbine chamber tangentially at the bottom of the groove a distance exceeding 5/6 of the arc of a circle from the point of connection of the supply conduit is made a discharge opening located at a distance of 1/9 of the arc of a circle, and the outlet conduit is connected to the opening and extending along the flow. 2. Hydraulic unit according to claim 1, characterized in that the pontoons are made of plastic.