RU2697379C1 - Water intake structure - Google Patents

Abstract

FIELD: hydraulic structures.SUBSTANCE: invention relates to hydrotechnical structures, in particular, to water intakes for water-storage-coolers in circulation water supply system of thermal and nuclear power stations. Water intake structure includes upper and lower flexible waterproof webs. Upper part of webs is equipped with floats attached to rigid support bars, having in lower part hinges located on bottom anchor. Support rods have a system of hoses for supply of water or air into the floats. Structure has a thrust beam to which the lower part of the upper web is fixed. Lower part of lower web is fixed on bottom anchor, and upper part of lower web with float, filled with air, rests against thrust beam.EFFECT: technical result achieved by the disclosed invention consists in simplifying the design while improving its reliability.1 cl, 4 dwg

Description

The invention relates to hydraulic structures, in particular to water intakes for cooling reservoirs in the circulating water supply system of thermal and nuclear power plants.

A water intake structure is known, including a deep water intake window, an upper panel with a surface float attached to its upper edge, having a sag loop with stabilizing ballast and a lower panel fixed by a brace to the anchor located at the bottom of the reservoir (see patent RU No. 1240823 ЕВВ 9 / 04).

The disadvantage of this device is the design complexity, the abundance of flexible connections, braces, deep floats cause low reliability of the structure.

A water intake structure is known, equipped with piles, in the upper part of which there are two panels with floats attached by flexible connections to piles and a lower panel, to the lower edge of which a deep float is attached (see patent RU No. 1079742 ЕOВВ 9/04).

The disadvantage of the construction is the low reliability due to the abundance of flexible connections, balances.

The closest to the proposed structure is a water intake structure, which includes a flexible waterproof waterproof panel installed in a reservoir with floats attached to the upper and lower edges and the middle part of the panel, bottom anchors and flexible support rods, as well as a system of hoses for supplying water or air to the floats (see Patent RU No. 1437475 ЕОВВ 9/04).

The presence of flexible rods with restrictions on the movement of floats; through holes in the floats through which flexible rods are passed - all this greatly complicates the design and reduces reliability.

The technical result achieved by the invention consists in simplifying the design while increasing its reliability.

The specified technical result is achieved by the fact that the water intake structure contains upper and lower flexible waterproof panels.

The upper part of the panels is equipped with floats attached to rigid support rods having hinges in the lower part located on the bottom anchor. The support rods also have a hose system for supplying water or air to the floats. The structure has a persistent beam, to which the lower part of the upper panel is fixed. The lower part of the lower panel is fixed on the bottom anchor, and the upper part of the lower panel with a float filled with air abuts against the thrust beam.

The water intake structure consists of an upper flexible waterproof panel 1 and a lower panel 2. The upper part of the panels is equipped with floats 3 and 4, respectively attached to rigid support rods 5 and 6, which in turn are equipped with a hose system for supplying water and air to the floats 3 and 4 (not shown). The lower part of the upper panel 1 is fixed on the thrust beam 7, and the lower part of the lower panel is fixed on the bottom anchor 8. The support rods 5 and 6 in the lower part have hinges 9 located on the bottom anchor 8. Positions 10 and 11 indicate the lower and upper water intakes, respectively window.

The water intake works as follows:

In the initial state (Fig. 1), the floats 3 and 4 are filled with water and the float 3 with the support rod 5 lie on the stop beam 7, and the float 4 with the support rod 6 lie on the bottom of the watercourse on the anchor 8. The watercourse is free and does not interfere with movement water.

In another case (Fig. 2), the floats 3 and 4 filled with air surfaced and the panels 1 and 2 completely block the watercourse.

When taking water from the upper layers of the reservoir, i.e. (Fig. 3) from the top 11 of the water intake window, the float 4 and the float 3 are simultaneously filled with air.

Under the action of a buoyant force on the float 4, the panel 2 with the upper part of the support rod 6 floats up and, resting on the stop beam 7, block the lower intake window 10. At the same time, the float 3 is filled with water while air is expelled from it, as a result of which the upper part of the persistent rod 5 together with the float 3 are lowered to the stop with the stop beam 7, opening the upper intake window 11.

When taking water from the lower layers of the reservoir (Fig. 4), the upper part of the reservoir overlaps (the operation is described above), the float 4 is filled with water and, under the action of gravity, is lowered onto the bottom anchor 8 together with the support rod 6. In this case, the panel 2 is folded, releasing the lower intake window ten.

Such an implementation of the water intake structure can significantly simplify the design, simplify the regulatory process and thereby increase reliability, since there is no need to use flexible connections, rods, stabilizing ballasts, all kinds of limiters.

Claims (1)

A water intake structure, including upper and lower flexible waterproof panels with floats, bottom anchors and a hose system for supplying water and air to the floats, characterized in that it is equipped with a stop beam and rigid support rods with a hinge in the lower part on the bottom anchor and attached to the upper parts to the floats of waterproof panels, the lower part of the upper panel attached to the thrust beam, and the lower part of the lower panel attached to the bottom anchor.

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