SU1388507A1 - Syphon-type spillway of hydraulic engineering structure - Google Patents

Abstract

The invention relates to hydraulic engineering. The purpose of the invention is to increase the work efficiency by automatically adjusting the level of water discharge. The main elements of the siphon spillway are a vertical chamber 2 with lower holes 3 located in the upstream 1, a spillway pipe 4, a movable pipe 6, a bellows 7, a float vessel 8, a stop device in the form of a flange 9 with holes 10. The float vessel 8 has holes 12, each of which is installed valve 14 with the rod 15. The flange 9 is connected to the rod 16, equipped with locking screws 17. Water enters the chamber 2, raises up the float tank 8 together with a movable pipe 6 connected to the bellows 7. Rod 15 abut In the flange 9 and opens the valve 14. The water fills the tank 8, and under its weight the tank 8 is lowered, the bellows 7 is compressed. After removal of air from the top of chamber 2, the spillway works as a siphon. 1 hp ff, 1 ill. cl

Description

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FIELD OF THE INVENTION The invention relates to hydraulic engineering, in particular, to water discharge hydraulic structures.

The purpose of the invention is to increase the efficiency of the operation of automatically adjusting the level of water discharge.

The drawing shows a siphon spillway.

The siphon spillway includes a vertical chamber 2 with lower holes 3 located in the upstream 1, a discharge pipe 4, the vertical part 5 of which is installed inside chamber 2, a movable pipe 6, sylphs 7, a float tank 8, a thrust mechanism in the form of a flange 9 with holes 10 placed inside the chamber 2 and connected to the lid 11 of the chamber 2. The float container 8 is made with openings 12 in the bottom 13, each of which has a valve 14 with a stem 15. The flange E is connected to the lid 11 of the chamber 2 made in the form of a vertical rod 16, provides constant locking screws 17. In addition, the dam 18 shown, rymbolt 19, the recesses 20 of rod 16, seal 21, attachment 22 cap 11.

The siphon spillway works in the following way.

When the water level in the upstream 1 rises into the chamber 2, water begins to flow through the bottom openings 3, the float tank 8 rises upwards, and the movable pipe 6 connected to the bellows 7 (bellows expands) rises up and the valve 14 remains closed. After the rod 15 is pressed into the flange 9, the valve 14 opens, the float tank 8 is filled with water and under its weight the tank 8 starts to lower, the valve 14 is closed and the bellows 7 is compressed. At the beginning of the section from the bottom of the flange 9 to the zone of maximum compression of the bellows 7 at the tip of the movable pipe 6 at its lower position, water is discharged in the free flow mode, and after the air is removed from the upper part of the chamber 2, a vacuum is formed in the pipe 4. then it is reset in the siphon mode (the bellows 7 is in the compressed position, the tank 8 is filled with water, the valve 14 is closed). After the vacuum is broken, the tank 8 is emptied and the bellows 7 moves upwards under the

the impact of the float tank 8 simultaneously with the rise of the water level in the chamber 2. The height of the drawdown above the pipe 4 in the range from 1 to 10 m is summed with the depth of vacuum from 1 to 9 m and is about 19 m as a whole. The stop flange 9 moves by moving down or upward) of the rod 16, with which it is connected, and fixed by locking screws 17 entering the notches 20, which allows to regulate the level of drawdown on one side, and on the other side the stop device in the form of a flange 9 provides opening of the valve 14 through the rod 15, because the stock 15 to 30-40 s container above the bead 8. The apertures 10

flange 9 provide a discharge of water to the moment when the bellows 7 is compressed.

Claims (2)

1. A siphon spillway of a hydraulic structure, comprising a vertical chamber located in the headwater of the structure with lower holes, a discharge pipe, the vertical part of which is installed inside the chamber, a movable pipe, bellows and float tank, while the movable pipe is located coaxially inside the vertical part of the spillway pipe, the bellows is located outside the movable pipe and the upper end is tightly attached to the upper parts of the movable pipe, and the lower end to the upper end of the discharge pipe, the float tank is fixed to the upper part of the movable pipe on its outer side, characterized in that, in order to increase work efficiency by automatically adjusting the level of water discharge, it is equipped with a stop device a flange with openings placed inside the chamber and connected to the chamber lid, and the float tank is made with openings in the bottom, each of which has a valve with a brush that interacts with a stop device yours 2. A siphon spillway according to claim 1, characterized in that the connection of the flange to the lid of the chamber is made in the form of a vertical bar mounted with the possibility of vertical movement relative to the chamber lid and provided with locking screws.