RU2004681C1 - Water intake of power conduit of hydroelectric power station - Google Patents

Abstract

The invention makes it possible to achieve an increase in the degree of regulation of the discharged lead from the upstream to the downstream through a hydroelectric turbine. The water inlet of the turbine water conduit 1 (Fig. 2) consists of a chambers 2 with a shutter 5, equipped with a shelf 6. mounted on a swing bracket 8. The butt 6 is suspended from the traction cable 11. With the cable 11 pulled, the shelf 6 adjoins the shutter 5 with its right end face 5. D is formed -shaped shutter, providing drainage of surface water with a layer N. When the cable 11 is weakened by gravity, the shelf 6 tends to move down. The bracket 8 rotates, the shelf 6 moves away from the shutter 5 with the formation of a lumen of width V and rotates through an angle a. With this position of the shelf, water is drained into the chamber not only from the surface layer, but also from the lower layers through the lumen a. The temperature of the drained water is set averaged. 2ia

Description

FIELD OF THE INVENTION The invention relates to hydraulic engineering and is intended for draining water from an upper head of a hydroelectric power station to a lower one through a hydraulic turbine.

The purpose of the invention is to increase the efficiency of the device by simplifying the regulation of the temperature of the intake water.

Figure 1 shows the water intake when draining water through a shutter with a horizontally mounted shelf, side view; figure 2 - water intake when draining water through the shutter with a detached shelf and an inclined shelf.

The water inlet of the turbine water conduit 1 includes an anterior chamber 2, in which a working valve 3, grooves 4 for the repair valve and a control valve 5 with a shelf 6 in the upper part are located. The shutter 5 is placed in the grooves 7 with the possibility of vertical movement. The shelf 6. of the control shutter is equipped with an earring 8, pivotally attached to its lower edge, and is attached by means of the earring with the possibility of rotation away from the chambers 2 relative to the horizontal axis located on the front edge of the control shutter 5. The earring 8 is attached to the shutter 5 and shelf b with by means of hinges 9 and 10. A change in the position of the shelf b is achieved by tensioning the lifting cable 11.

The inventive water intake is used as follows.

When the shutter 5 is buried under water to a depth of H and with the shelf 6 adjoining the shutter, the shutter 5 works like this. Shelf 6 cuts off the possibility of the entry of jets from water layers located below level H, and a stream of water flows into the chamber 2 from the surface water layer. The indicated position of the shutter 5 and the shelf 6 is reached by the tension of the lifting cable 11 (Fig. 1). If the surface of water 13 in the upper pool is located lower as a result of the triggering of the level

water in the water area 12 of the upper pool, the shutter 5 is shifted down and set at a depth of H from a new (lower) water level. The water from the upstream is discharged into the chamber 2 and with a raised shutter 3

(figure 1), enters the turbine conduit. If necessary, drain from the upper pool cooler water in the summer than it is in the surface layer, or warmer in the winter (in winter, at the bottom of the 14th reservoir is warmer than

near the surface), by weakening the cable 11, the position of the shelf 6 is changed. When the cable 11 is weakened by the gravity of the shelf, it is displaced, the Eye tends to lower. The pivot 9 and 10 of the earring 8 rotate. In this case, a gap of width a is formed between the edge of the shelf b and the shutter 5, and the shelf is tilted at an angle a (Fig. 2). The drain threshold (upper end of the shutter 5) is placed at a depth of H from

surface 13 of water in the upstream. Through this threshold surface water merges, to which water from a deeper layer also joins. Additional jets (deep) mix with the surface and change the temperature of the drained water downward in the summertime and increase in the wintertime. The required temperature of the drained water is set in advance

hydrological calculation.

(56) Shchavelov D.S. Use of water energy. M. - L .: Energy. 1965, p. 343.

USSR copyright certificate No. 746029, cl. E 02 B 9/04, 1972.

Claims (1)

The claims WATER RECEIVER OF TURBINE WATER WATER HYDRO POWER PLANTS, including a chambers with working and repair gates and a regulating shutter with a shelf in the upper part installed at the inlet of the chambers, characterized in that, in order to increase work efficiency by simplifying the regulation of the temperature of the water taken in, the regulating shutter shelf is provided an earring pivotally attached to its lower edge, and attached by means of an earring with the possibility of rotation away from the fore camera relative to the horizontal axis located on and the front face of the shutter. fifty r #r Jr jy / g 4g g /.  rJ7 / b s h W /// Jr // 7 Jy / y //% FIG. I