SU1186727A1 - Arrangement for stopping the bed of river flowing into sea - Google Patents

Description

The invention relates to hydraulic engineering and can be used to close the culvert holes, mainly on devices blocking the river mouth, flowing into the sea, the main purpose of which is the unobstructed passage of water, floating means of floating objects and pumps at low tide and blocking the mouth of the Yu river at high tide.

The purpose of the invention is to simplify operation by providing automatic opening of the shutter during ebb and closure during the pouring.

FIG. 1 shows the device, top view; in fig. 2 - the same cross section.

On flyutbet 1 with abutments 2 set-20 flap shutter 3, made in the form of a trihedral prism, with a horizontal axis of rotation 4 fixed on the flybet 1. Shutter 3 is made of a material with an average volumetric mass of 25 equal to the volumetric mass of river water, and the center its gravity is located in the geometric center.

To limit the turn of the gate 3 towards the sea, ledges 5 are provided, and to the side of the river there are steps 6. At the abutments 2, there are clamps 7 for keeping shutter 3 in the closed position when there are waves at sea and until the level in the river reaches the calculated (RU).

The device works as follows.

In the initial position, the shutter 3 is closed and held by latches

7. In the river, the volume of water increases, the level reaches the calculated value, the latch 6 operates and releases the shutter 3. It is assumed to be equal to the water mark in the tide sea. When the calculated mark is exceeded from the side of the river, the pressure 3 acts on the shutter 3, which is somewhat greater than from the sea (due to the difference in levels). The shutter 3 is rotated and under the influence of the flow is lowered onto the ledges 5, thereby ensuring the unobstructed passage of water, vehicles from the river into the sea during low tide. Started tide in the sea creates backwater, and then the water differential in the side of the river, that is, the water begins to move from the sea into the river, and the hydrodynamic pressure acts on the shutter 3. By virtue of this and the fact that sea water is somewhat heavier than river water, hydrodynamic pressure and buoyancy force act on gate 3. The shutter 3 is rotated around the axis 4 in the direction of the river and pressed against the ledges 6. The latch 7 locks the shutter 3 in this position. The process is then repeated at intervals at which the ebb and flow alternate.

The application of the invention will allow for automatic opening of the shutter at low tide and closing at high tide.

1186727

1

Claims (1)

A DEVICE FOR OVERLAPPING A RIVER THROUGH IN A SEA, containing the foundations, a flybet with a shutter fixed on it on the horizontal axis, designed as a triangular prism, with two smaller faces facing the flyutTo, which, in order to simplify operation, ensure automatic opening the shutter at the time of outflow and closure at high tide, the shutter is made of a material with an average volumetric mass equal to the volumetric mass of river water, and its center of gravity is located in the geometric center. (ABOUT 00 Od m No Fig1 > 1 1186727 2