SU1476051A1 - Arrangement for dampening water stream energy in lower pownd of hydraulic structures - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to hydraulic engineering, in particular to water flow energy absorbers in the downstream of a water disposal hydraulic structure. The purpose of the invention is to increase the work efficiency by increasing the uniformity of the distribution of the water flow across the downstream. In the lower side of the hydraulic structure, there is a water slab 1 with side walls 2 expanding in plan, on which middle 3 and extreme 4 piers are installed, forming a row across waterway 1. Pier 3 has vertical flat rear faces 5 and concave curved lateral 7 and upper 8 facets. Piers 4 have a vertical flat rear face 10, a vertical flat side face 11 and a concave curved side face 12. Face 11 is located from walls 2 at a distance of 1.0-3.0 base length of face 10, and pier length 4 is 1.7 -3.0 of its height. The water moving on the sidewall 1 is divided by the pointed front parts 6 piers 3 and 4 into parts, which, colliding, extinguish their energy and evenly flow into channel 14. Extreme piers 4 faces 12 divert the stream to the expanding walls 2, eliminating the possibility of formation of whirlpools near the walls 2 and the resistance of the flow in channel 14. 2 Cp f-ly, 2 ill.

Description

FIELD OF THE INVENTION The invention relates to hydraulic engineering, in particular to water flow energy absorbers in the downstream of a water disposal hydraulic structure.

The purpose of the invention is to increase the operating efficiency by increasing the uniformity of the distribution of the water flow across the downstream.

FIG. 1 shows a device for quenching the energy of the flow of water in the downstream of a hydraulic structure, top view of FIG. 2 - extreme pier, axonometric.

The device contains located in the downstream water vodoy 1 with expanded goschismis in terms of side walls 2} middle and extreme piers 3 and 4, installed in a row on water 1 across its axis. Piers 3 are made with a vertical trailing rear face 5, a pointed front part 6 and concave curved lateral and upper edges 7 and 8, Extreme piers 4 are made in the form of pyramids with a triangular base

9 and vertical rear and facing the middle piers 3 side faces

10 and 11j, the faces 11 are parallel to the axis of the water supply system 1 at a distance of 1.0-3., About the length of the base of the rear edge of the face 10 of the side walls of the waterborne 1, and the length of the outermost piers 4 with is 1.7-3, 0 its height. The other side face 12 of the piers 4 is curved concave. The front parts 7 of piers 3 and 4 are located in the extension 13 of the side walls 2 of waterboat 1 or behind it up to 155 lengths of the outer piers.

four . Position 14 denotes the outlet

five

about

five

downstream canal. The angle between the walls 2 and the axis of water 1 must be less than 20 °.

Claims (3)

Water moving along the waterside 1 interacts with a number of piers 3 located across the entire width of the water 1. These piers 3 ensure reliable extinguishing of the excess energy of the flow and its distribution in the axial zone of the structure, however, the whirlpool in the peripheral area 2. The installation of the outermost piers 4 makes it possible to exclude the whirlpool zones in the said area, since the flow of water moving along the side walls 2 meets in its path with the front part 6 of the pier 4, which is designed as asymmetrical in plan triangular pyramid. The flow along the lateral vertical face 11 goes to channel 14 without changing its direction. Interacting with the inclined concave face 12 of each outer pier 4, the flow splits and deflects toward side wall 2 into the peripheral zone of the waterboat 1 and channel 14, than due to the decrease in whirlpools and the even distribution of running costs in channel 14. The interaction of the flow with piers 3 and 4 occurs smoothly and without shock due to the fact that the working faces 7, 8, 11 and 12 piers 3 and 4 smoothly close at the point located 1. Formula of the invention 1. A device for quenching the energy of the water flow in the downstream hydroconstruction, including a water body with side walls and piers installed in a row on the middle part of the water-tower across its axis, with the piers made with a vertical rear edge pointed at the front part, and concave curvilinear lateral and upper edges, characterized in that, in order to increase operational efficiency by increasing the uniformity of the distribution of water flow across the downstream, it is fitted with extreme piers, lennymi on the apron at the walls in one row and middle piers are designed as pyramids with a triangular base and vertical back and facing the middle piers the lateral faces, the faces of the outermost piers facing the middle piers are parallel to the waterway axis at a distance of 1.0-3.0 the length of the base of the back edge from the side walls of the waterway, and the length of the extreme piers is 1.7-3, 0 its height. 2. The device according to claim 1, wherein. that the side walls of the water dispenser are expanding in plan. 3. The device according to paragraphs. 1 and 2, about t - in that the front parts of the piers are located in the extension wall of the side walls of the waterway or behind it at a distance of up to 1.5 times the length of the outer piers. 12 Editor A. Dolinich Compiled by A. Sergeev Tehred M.Hodanich Order 2133/28 Circulation 590 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 ten  9 eleven - FIG. 2 Corrector I. Muska Subscription