RU2703201C1 - Surface runoff inlet - Google Patents

Abstract

FIELD: sewage facilities.

SUBSTANCE: invention relates to sewage structures. Surface runoff inlet comprises a working chamber with a wall and a bead, a bottom, an outlet of a pipe from the well, a cast-iron grid. Inlet is additionally equipped with a hydrodynamic device in the form of flow vortex generators consisting of barrier-shields installed at an acute angle and across to the incident flow and arranged along the perimeter of the working chamber grate of the inlet.

EFFECT: higher operational properties of inlet, reliability of operation and efficiency.

1 cl, 2 dwg

Description

FIELD OF THE INVENTION

The invention relates to stormwater and other devices intended for drainage of storm water.

Technical field

To receive storm water, numerous designs of storm water wells are used.

A device in the form of a sewage well is known, including a housing, a trash-holding grate mounted on it, located in the upper part of the casing, an inclined guide plate installed inside the casing directly below the trash-holding grate, a vertical partition dividing the casing into a water intake and settling chamber, a drainage hole made in the partition and communicating with the intake and settling chambers, a removable dirt collector and a drain pipe, characterized in that the well is equipped with garbage aqueous tray disposed parallel to the side wall of the housing and adjacent its upper edge to the lower end face of trash screen, wherein the guide plate and the dirt collection container made watertight and trash screen is hinged relative to the upper end face of the housing. [one]

The disadvantage of this device is that it is characterized by excessive structural complexity and low operating efficiency, due to insufficient productivity in the discharge of storm drains.

Also known is the simple design of the inlet well, including a working chamber with a wall and a side, a bottom, a pipe outlet from the inlet well, a cast-iron grate. [2]

A disadvantage of the known storm water well is that such a plant does not have high efficiency during its operation, since it does not provide a quick discharge of the resulting storm drains.

It is known that with heavy rainfall, water flows of considerable depth are formed with a high flow rate. The used designs of storm water inlets do not provide interception of water flows. Therefore, a large part of the volumes of storm water flows over the grate of the storm water intake well in transit, without falling into the well.

Disclosure of invention

The technical result of the invention is to improve performance, reliability and absorbing performance of the storm water well.

This problem is achieved due to the storm water well, which includes a working chamber with a wall and a side, a bottom, a pipe exit from the rain water well and a cast-iron grate, while it is equipped with a hydrodynamic device in the form of flow vortex generators consisting of barriers installed at an acute angle and transverse to the oncoming flow, and placed around the perimeter of the grid of the working chamber of the well.

Barriers-shields installed around the grating of the working chamber of the well, acting as flow reflectors, block the path of the moving water flow. The tangential stresses arising on the solid boundary lead to the formation behind the shields of the vortex flow region associated with the phenomenon of separation of the boundary layer. When a body flows around with a rapidly changing surface profile, the separation of the boundary layer is a consequence of the inertia of water particles within the boundary layer. Turbulent mixing, an alternating pressure gradient, and a change in the direction of the flow inside this region create conditions for continuous interaction between the separated flow and the main flow. As a result, the storm flow rate decreases, which ensures an increase in water flow through the well grid. With an increase in the rate of storm flow, turbulence increases, which also contributes to an increase in water flow through the well grill. This increases the operational quality of the storm water well, provides accelerated water drainage, as well as the possibility of its use at high flow rates in a storm flow.

Brief Description of the Drawings

The invention is illustrated by drawings, where:

In FIG. 1 shows a general view of a storm water inlet well with an installed hydrodynamic device in the form of flow swirls;

In FIG. 2 shows the storm water inlet 1-1 in FIG. one.

The implementation of the invention

A storm water inlet containing a working chamber 1 with a wall 2 and a side 3, a bottom 4, an outlet 5 of a pipe from a storm inlet well, a cast-iron grate 6, equipped with a hydrodynamic device in the form of flow vortex generators, consisting of barriers-shields 7 installed at an acute angle and transverse to the oncoming flow 8, and placed around the perimeter of the lattice 6 of the working chamber of the well 1.

The storm water well operates as follows. After the installation of a storm water inlet well equipped with a hydrodynamic device in the form of flow vortex generators, it goes into working position. When the storm water well functions as a storm water intake structure, barriers-shields installed around the perimeter of the grid of the working chamber of the well, acting as flow reflectors, block the path of the moving water stream. The vortex flow regions arising behind the shields associated with the phenomenon of separation of the boundary layer contribute to turbulent mixing inside this region, which leads to a decrease in the rate of storm flow on the surface of the grate and provides an increase in water flow through the well grate. With an increase in the rate of storm flow, turbulence increases, which also contributes to an increase in water flow through the well grill.

Thus, the use of a storm inlet well equipped with a hydrodynamic device in the form of flow vortex generators increases the operational qualities of the storm inlet well and the reliability of its operation, as it ensures the acceleration of water drainage, as well as the possibility of its use at high water flow rates in a storm flow.

Information sources:

1. Storm water well. RF patent No. 2095525, Cl. E03F 5/14, 1997.

2. Storm water well. S.P. Kashin. The most needed gardening equipment. Efficiency at no extra cost. From the series: Crisis Cottage. RIPOL Classic, 2015.

Claims (1)

A storm water inlet including a working chamber with a wall and a side, a bottom, a pipe outlet from a storm water inlet, a cast-iron grate, characterized in that it is equipped with a hydrodynamic device in the form of flow vortex generators, consisting of barriers-shields installed at an acute angle and transverse to the incoming flow and placed around the perimeter of the grid of the working chamber of the well.

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