SU1372005A1 - Water intake arrangement - Google Patents

Abstract

The invention relates to hydraulic engineering. The purpose of the invention is to increase the reliability of operation in conditions of periodic pollution of the water source. The water receiving bucket 1 is connected to a water source 2 and has a wall 5 with a window 6, in the lower part of which a perforated pipe 7 is placed, connected through a valve 9 with an additional source 10 of water. The water from the bucket 1 is supplied by the pumping station 4 to the consumer. When the water source 2 is polluted into the pipe 7 from the source 10, clean water is supplied, which, coming out of the orifice of the pipe 7, prevents the passage of hazardous water from the water source 2 into the anankamer 11. 1 Cp. f-ly, 3 ill. i O)

Description

FIG. t

The invention relates to hydraulic engineering, in particular to water intake structures consuming water from water sources with periodic, mainly seasonal, water pollution.

The purpose of the invention is to increase the reliability of operation in conditions of periodic contamination of the water source.

FIG. 1 shows a water intake structure, top view; in fig. 2 is a section A-L in FIG. one; in fig. 3 shows the node I in FIG. one.

The water intake structure contains a water intake bucket 1 connected to the source 2 by a narrow passage 3. At the end of the bucket 1 a pump station 4 is placed. Perpendicular to the longitudinal axis of the bucket 1, a partition wall 5 with a window 6 is installed, at the bottom of which a perforated pipe 7 is laid with a zigzag located openings 8. A perforated pipe 7 through shut-off valves - valve 9 is connected to an additional source 10 of standard quality water, such as a lake or reservoir, etc. Permanent fence from source 10 for some reason or another is not possible, and a short-term fence is possible. The partition wall 5 divides the forging 1 into two parts, one of which forms an ananker 11, connected to the suction line of the pumping station 4, and the other - the main part 12 of the bucket 1.

With the open valve 9, the water comes out of the holes 8 in the form of jets 13

The holes 8 in the perforated pipe 7 are placed in such a way that the end of each previous hole and the beginning of the next one lie in the same plane of the section of the pipe 7 and the distance between them is 0.1-0.15 of the diameter of the pipe 7.

Water intake works as follows.

When the water pollution in the water source 2 does not exceed the norm, the valves 9 are closed, the pump station 4 takes water from the water source 2 through the passage 3, the bucket 1, the window 6 and the anankamer 11.

If the water pollution in the water source 2 exceeds the norm (for example, a large amount of industrial waste has been discharged to the source), then open the valve 9, from

five

five

0

6

0

At the source 10, water is supplied to the pipe 7, through the openings 8 of which it flows out in the form of flat jets 13. As the water moves progressively in the pipe 7, when leaving the openings 8, it has a horizontal velocity component, due to which in the avant-chamber 11 and the main part 12 buckets into which it is divided by partition wall 5, whirlpools unwind (Fig. 1). Due to the centrifugal forces of the whirlpool in part 12 of the bucket 1, the water of the water source 2 is pushed away from the bucket. Opening the valve 9 ensures the flow rate to the bucket 1 is 5-10% larger than that taken by the pumping station 4. This ensures a constant flow of water from the bucket 1 to the side of the water source 2, which eliminates mixing of water at the whirlpool boundary in part 12 the ladle 1 and the water source 2. The partition wall 5 separates the water masses in both whirlpools of the ladle 1, which is necessary to maintain the stability of the whirlpools and to avoid mixing of the water masses from the whirlpools.

Since there is a constant water intake by the pumping station 4, the bulk of the water from the pipe 7 enters the avant-chamber 11, and the other part 12 of the bucket 1 receives only the mass of water determined by the difference of the flow through the pipe 7 and the flow taken by the pump Station 4.

As soon as the standard water quality is restored in the water source 2, the shut-off valves 9 are closed, the inflow of water to the ladle 1 from the source 10 is stopped and the access of water from the water source 2 through the passage 3 opens.

Formulas

the invention

Claims (2)

1. A water intake structure, including a water receiving bucket communicated with the water source, to which the suction line of the pumping station is connected, is characterized in that, in order to increase the reliability of operation in conditions of periodical contamination of the water source, it is provided with a window installed across the bucket and forming an anankamera in front of the pumping station, and a perforated pipe located along the wall in the lower part of the window and connected through valves with an additional source of water of standard quality, 2. The construction according to claim 1, characterized in that the holes in a perforated pipe, they are zigzagged along it, with the end of each previous hole and the beginning of the next one lying in one plane of the pipe’s cross section TSH 13 7 A a Rig 2 . 3