RU1818402C - Water stream energy absorber - Google Patents

Abstract

The invention relates to the field of hydraulic engineering. The purpose of the invention is to increase the efficiency of energy suppression and to prevent fault flows. The water well contains a curvilinear threshold and a visor made in the form of a springboard directed towards the upper pool and provided with slotted openings narrowing upwards. 2 ill.

Description

The invention relates to the field of hydraulic engineering and can be used to extinguish excess flow energy, for example, in the downstream of hydraulic structures.

The purpose of the invention is to increase the efficiency of quenching the flow energy and to prevent faulty flows in the downstream of hydraulic structures.

Figure 1 shows a flow energy absorber, in section; on fig.2 - the same, in a perspective view.

Behind the intake, blocking, mating or waste structure, which passes the stream of water from the upstream pool 1 to the outlet channel 2, there is a flow energy absorber, including a well 3 with an inclined bottom 4, passing into the wall 5, the face of which is made concave curvilinear in vertical the cross section of the wall 5 and passing into the visor 6, resting on the abutments (not shown) is also curved in the form of a springboard, having slit-like openings 7, which are made of plates 8. having a trapezoid in cross section approved form. Arrow 9 indicates the direction of flow.

Thus, the stream exiting from the structure’s shield having significant bottom velocities that form the bottom movement mode and create conditions for erosion of the unsecured part behind the structure, the visor 6 is divided into two layers - surface and bottom. The surface flow, falling onto the springboard of the visor 6, spreads uniformly over its surface. The bottom stream at high speed enters the well 3 and hits the curved wall 5, forming a swirling pressure stream, which, in addition to the longitudinal one, also has a peripheral speed. The swirling flow saves excess energy and the passage through the narrowing slotted openings 7 located in the visor deviates from the original direction of movement towards the surface flow.

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When the pressure swirling flow expires, the sublevel, its energy in the outlet cross section of the slit-like openings 7 exceeds the backwater pressure side. Their difference is used to quench the -energy. This difference is the larger, the greater the value of the peripheral speed. The stream tends to flow in all directions interacting with the main stream. In this case, useful work to quench energy will occur only when the part of the flow that moves against the flow spreads. The visor will prevent the spreading of the swirling flow, playing the role of a water wall and promoting uniform distribution in terms of flow velocities, i.e. prevent it

failures. The streamlined dampers prevent flares of excess kinetic energy, leading to turbulence and flow failure.

Claims (1)

SUMMARY OF THE INVENTION Water flow energy absorber including a water well bottom and its concave curved curvilinear threshold with a visor, characterized in that, in order to increase the efficiency of quenching the flow energy and prevent faulty flows, the visor made in the form of a springboard directed towards the upper pool with slotted openings narrowing upwards.