SU50086A1 - Water flow regulator - Google Patents

Description

The invention relates to spillway regulators designed to maintain a certain desired flow rate through the spillway, regardless of fluctuations in the level of the upstream. The essence of the spillway regulator of the proposed construction is that the shutter is movably mounted in the guides and in its upper part has a horizontal platform, which is a wide threshold of the spillway. The weight of the shutter is chosen so that at a certain predetermined value of pressure on the weir, the shutter is in equilibrium.

In FIG. 1 is a cross-section of the regulator; and FIG. 2-plan it.

The main part of the regulator weir is a floating shutter 7, which represents a triangular prism with a horizontal platform ab. The shutter moves freely along guides 2, inclined to the horizon at an angle a and located in the foundations of the dam. The weight of the bolt is chosen in such a way that it is in equilibrium under the action of 1) water pressure P, 2) own weight, 3) reaction of guide 2 and 4) pressure of the overflowing jet. Therefore, to balance the shutter at given angles of air, weight and dimensions of the shutter, a certain amount of

head k and the corresponding water flow. In the case of an increase in the level of water in the upstream, the increased pressure P on the edge ac, (due to the fact that) raises the stopper 7 to such a height that the head fi will again be the same. Accordingly, the flow rate will remain unchanged. When the horizon is lowered, the shutter under the action of its weight will be lowered, sliding along the guides until the pressure P, having reached its previous value, stops it and the former head A is established.

The spillway regulator can be designed for a specific water flow rate or for a certain range of flow rates with the possible cessation of water overflow through the gate. This is achieved either by varying the load of the shutter (for example, water through a special hatch in the upper wall) or a device for changing the living section of the overflowing jet (compression of the jet from the sides) can cause a certain floating of the prism due to a decrease in pressure from above.

If there is friction between the shutter and the guides, the proposed spillway regulator cannot maintain strictly defined water flow. The accuracy of its operation depends on the design of the bearing parts of the gate and the guides.

The subject matter of the invention.

An overflow water regulator, characterized in that the shutter /, movably mounted in the guides 2, has a platform in its upper part

ab, serving as a wide threshold of the weir and the weight of the shutter is chosen so that the shutter is in equilibrium at a certain made-up pressure head fi on the weir.

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