RU1786222C - Flow energy dissipator - Google Patents

Abstract

The invention relates to hydraulic engineering and can be used for spillway systems. An object of the invention is to increase the reliability and efficiency of quenching the energy of a water stream. The energy absorber of the water stream consists of a water-producing well 2 of a cylindrical shape, to which a supply conduit 1 is connected with a round or rectangular cross section. In the center of the water well 2 there is a vertical stand 3, over which a horizontal cover 4 sec is fixed so that there is a gap between it and the wall of the water well 2, which communicates the cavity of the water well with the downstream. 1 s.p. f-ly, 2 ill.

Description

2

The invention relates to the field of hydraulic engineering and can be used for spillway systems.

The purpose of the invention is to increase the reliability and efficiency of energy suppression.

In FIG. 1 shows a flow energy absorber in plan view; in FIG. 2 is a vertical section of a quencher;

The flow energy absorber comprises a supply conduit 1 Q of circular or rectangular cross-section, interfaced with a cylindrical water well 2, in the center of which a cylindrical vertical column 6 is installed with a width that is irrespective of the diameter of the supply conduit 1. The column is provided with a cover 4 mounted above the well with a clearance a relative to its walls. A drain hole 5 is provided in the wall of the water well 2, at its bottom, which communicates the cavity of the water well with the downstream.

The damper works as follows.

The water flow entering the water well 2 is struck against a cylindrical upright 3, due to the reactive action of which a part of the kinetic energy of the flow is extinguished. Further, the flow is divided into two parts, which, passing along the walls of the water well 2, collide with behind the vertical wall 3, due to which the main part of the energy is extinguished. Intensive mixing of the flow and almost complete quenching of energy due to internal friction of the flow occur throughout the entire volume of the water well 2.

After skipping the discharge flow, the water well 2 and the supply pipe 1 are emptied using a drain from

0 5 0

5

d

5

verst 5, the presence of which (in view of its small size) does not affect the operation of the absorbers.

The flow rate flowing from under the lid 4 depends on the size of the gap a between the wall and the lid. The size of the gap is set so as to have the highest flow rates when leaving the water well 2, the risk of erosion of the downstream is eliminated.

Depending on the value of the discharge flow rate Q, the inner diameter of the water well D, the gap value is determined by the formula.

In order to more evenly use the volume of the water well 2, the upright 3 is made cylindrical, and to increase its reactive effect, it is made wider than the width of the inlet conduit 1.

The use of the invention allows efficient damping, while improving operational reliability while simplifying the overall design.

Claims (2)

1. A flow energy absorber including a supply conduit coupled to a cylindrical water well, in the center of which there is a vertical stand with a width exceeding the width or diameter of the supply conduit, characterized in that, in order to increase the reliability and efficiency of energy suppression, the stand is provided a cover mounted above the well with a gap relative to its walls. 2. The damper according to claim 1, wherein the column is cylindrical. Editor Compiled by T. Gorbachev Tehred M. Morgenthal figs Proofreader S.Jusco