SU914710A1 - Automatic gate for water level control - Google Patents

Description

The invention relates to automatic regulators of water level and differential and can be used in hydraulic structures, for example, on land reclamation systems.

The automatic shutter for water level regulation ® of ameliorative systems is known; it contains a shield installed rotatably about a horizontal axis and overlying a deep ^{, 0} binnered culvert hole in the lintel from the downstream side, and a balancing element associated with the shield.

The known device provides for the regulation of the water level of the upper ¹⁵

the reach and difference between the upstream and downstream levels (11.

However, with a large depth of the culvert under the level of the upper pool and a large difference between the levels of the upper and lower pools, the rotary shutter system comes into self-oscillation mode, which generates

²

There are wave movements in the pools. Formed on the surface of the downstream, the waves propagate downstream over a large distance, which leads to an increase in the cost of fixing the bottom and slopes of the channel and to narrowing the range of control of the water level shutter in the ameliorative canal.

The purpose of the invention is to expand the range of regulation by eliminating the self-oscillations of the shutter due to the impact on the shield of water coming from the upper pool with an open culvert.

The goal is achieved by the fact that in the automatic shutter for regulating the water level, which contains a shield installed rotatably about a horizontal axis and overlapping from the bottom of the downstream basin a deep throughput hole in the bridge, and a balancing element connected with the embroidered one

914710

hole installed visor attached to the jumper.

FIG. 1 schematically shows a device, a general view; Section A-A in FIG. 2; fig 2 is the same plan. 3

The automatic shutter for regulating the water level contains a shield 1 attached to the shoulder of the rocker arm 2 mounted on the lintel 3 and can be rotated relative to the horizontal axis 4. The shield 1 closes the deep culvert hole 5 on the downstream side 5. The balance arm element / completed, on the example 5, in the form of a float submerged under the headwater level 6. To be able to change the parameters for regulating the water levels, the float 6 has the possibility of vertical and horizon ₂₀ movement using the movement mechanism 7. From the downstream above the culvert 5 and embroidered 1 on the lintel 3 is fixed ko-. Zyrek 8. 25

The device works as follows.

The water level in the upstream or the drop, which should be automatically maintained by the shutter, is set by hell the vertical and horizontal movement of the float 6 by means of the displacement mechanism 7, while achieving an equilibrium state of the rotary system when submerged below level ₃₅ of the upstream float 6.

When a given water level in the upstream is increased or the differential increases, the shield 1 opens under the action of water pressure, and with it _{<0 the} float 6 rotates, reducing the holding moment due to a change in the shoulder-. A jet of water discharged through the upper slit, which is formed during the opening of shield 1, is reflected from the visor 8 and is directed along the stream of water in the downstream. Thus, the free fall of the jet onto the shield 1 or the water mass near the shield 1 is prevented, and there are no self-oscillations of the turning system of the shutter and wave movements in the pools. After reaching a given level or differential, shield 1 closes, and the whole system comes to an equilibrium state.

The use of the proposed device allows you to expand the range of regulation levels and differential, which makes it possible to use the device not only on the melioration channels, but also on intermediate water regulating structures, which will reduce the cost of the latter.

Claims (1)

Claim An automatic shutter for regulating the water level, mainly for hydraulic structures of land-reclamation systems, contains a shield installed rotatably about a horizontal axis and overlapping from the downstream side a deep drain hole in the bridge, and a balancing element associated with the shield, characterized in that expansion of the regulation range by eliminating self-oscillations of the gate due to the impact on the shield of water coming from the upstream when water is open Sliding the hole on the last set visor attached to the bridge. Sources of information taken into account in the examination 1. USSR author's certificate No. 540961, cl. Е 02 В 13/02, (prototype). " 914710 ll FIG. one 3 Fig.? Curtains G. Volkova