SU1381442A1 - Apparatus for controlling water level in channels - Google Patents

Abstract

The invention relates to hydraulic engineering and can be used to regulate the level of water in streams. The purpose of the invention is to simplify operation by increasing the efficiency of periodic flushing of upstream zones. In the spans of the structure, between the foundations 1 located in the watercourse 2, there is a main water-supporting shutter 3, auxiliary surface closures 5 and bottom closures 6 alternating with each other on both sides of the shutter 3. Kame

Description

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The valves 5 and 6 are connected in series with the control lines 7 with the zones in front of the previous gate 3, 5 or 6, which ensures their sequential activation with a gradual increase in the water level in the upstream structure. It provides

flushing the upper pool on its entire front from the bottom and surface sediments, as well as concentrated flushing of the upper pool on one side of gate 3 by closing valve 8 on the other side of gate 3. 6 Il.

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The invention relates to hydraulic engineering and can be used to control the level of water in watercourses, for example, in rivers near water intake structures.

The purpose of the invention is to simplify operation by increasing the efficiency of periodic flushing of upstream areas.

Figure 1 shows the construction, top view; figure 2 - section aa in figure 1; Fig 3 - section B-Bnafig.1; figure 4 is a section bb In figure 1; figure 5 is a section of GG in figure 2; figure 6 is a section aa in figure 1 in the case of the installation of the main shutter on the threshold.

The structure contains the foundations 1, located in a row across the watercourse 2 and dividing the structure into spans. On the middle span, a main water-assisting gate 3 is suspended, suspended from the retaining wall 4, and on both sides of the spans between the piers 1 there are located auxiliary surface gates 5 and pre-load gates 6 The auxiliary gates 5 and 6 are in series hydraulically connected by means of control piping 7, the pipelines 7, the output ends of which are located in front of the gate 3, are fitted with valves 8. The gate 3 is designed as a flat shield 9 mounted on the axis of rotation 10 and having an arm I1 with a counterweight

12. The locks 5 are made in the form of a shield chamber 13, which is installed on the horizontal axis 14 in the bases of I, and a flexible panel 15 with openings 16, which form a flutbet and a flexible panel 15 with open head. Cloth 15 one (edge attached to the free edge of the shield

13, and the opposite - to futbetu

facilities. The chamber formed by the shield 13 and the panel 15 is connected to the inlet end of the pipeline 7, and the outlet end of the pipeline 7 is located in front of the previous valves 3 or 6 and is directed in its direction. The closures 6 are made in the form of two flat shields 17 pivotally interconnected between themselves, one of which is mounted on the horizontal axis 18 at the base 1, and the other axis 19 interacts with the guides 20. The chamber formed by the shield 17 is in communication with the upstream through hole 21,

 5 and the output end of the pipeline 7 connected to the chamber is located in front of the shutter 5 and is directed in its direction. The closures 5 are interleaved with the closures 6, and the closures 6 have flush closures 22. The position 23 denotes a threshold.

The construction works as follows.

When an excess flow rate enters the structure, the main shutter 3 begins to open, discharging water flow into the lower pool. At the same time, the outflow of water along the near pipe 7, located on one side of the gate 5 (Figures 1 and 5), starts simultaneously. As a consequence, the pressure in the chamber of the auxiliary shutter 5 for discharge of the surface water layers decreases and the shutter 5 is lowered, passing excess water consumption over itself. In this case, the position of the auxiliary shutter 5 is stabilized only when the position of the main shutter 3 is stabilized. With a further increase in water consumption, the main shutter 3 increases its opening, as a result of which there is a greater outflow of water from the shutter chamber 5, n

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It, lowering below, reaches the level of the next pipe 7 (in Figures 1–3, the operation of the closures 3 and 6 is shown by a dotted line). In connection with this, water begins to flow through the specified pipe 7 from the chamber of the auxiliary gate 6 of the discharge of bottom water layers. As a result, the filling in the chamber of the gate 6 begins to decrease and under the action of the pressure force that arose as a result, the gate 6 starts to rise, further dropping excess flow to the downstream of the structure.

With a further increase in the flow of water entering the building, the valves 3.5 and 6 increase their opening and when the auxiliary gate 6 reaches a certain opening, the outflow of water from the next pipeline 7 begins, as a result, the auxiliary gate 5 of the upper surface water layers comes into play then enters the work of the auxiliary valve 6 discharge of bottom layers of water, etc.

Thus, alternation occurs in the entry into service mode of auxiliary valves 5 and 6 of discharge of the surface and bottom water layers, which makes it possible to pass surface and bottom sediments into the downstream.

The operation of the auxiliary valves 5 and 6, located on the other side of the gate 3, is similar. Moreover, if the loop of one pipeline 7 located at the gate 3 is located at a greater distance from the flat panel 9 than the other pipeline 7 (figure 5), then the auxiliary valves 5 and 6, located on one side of the gate 3, work with some lagging behind the remaining valves 5 and 6. If the ends of pipelines 7 at gate 3 are located at the same distance from the flat panel 9, then the auxiliary valves 5 and 6 of both zones of the upstream are synchronized.

If there is a flow rate Qp in the river, not exceeding the calculated maximum flow rate Q of the structure, i.e. with, it is necessary to turn off the auxiliary valves 5 and 6 of one of the zones. To do this, it is necessary to close one of the valves 8, which causes washing only the opposite

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headwater zones, and vice versa, when the other valve 8 is closed, the first zone is flushed.

If it is necessary to increase the accuracy of water level control in the upstream, the main gate 3 should be set at threshold 23 (Fig. 6). In this case, it is necessary to interchange the auxiliary valves 5 for discharge of the surface water layers and auxiliary valves for the discharge of the bottom water layers, i.e. Now, the first adjacent lateral to the main valve are the auxiliary valves 6 of the bottom water layers.

The need to install the main gate 3 at the threshold 23 also arises when there is some flooding in the downstream of the structure. In this case, the height of the threshold 23 is determined from the condition of ensuring free flow from under the main gate 3, as well as from the condition of respecting the pressure difference between the pools, sufficient to control the auxiliary valves 5 and 6.

As the main gate 3, any upstream or downstream level regulator can be used; however, in the latter case, only the water fraction in the downstream structure is regulated.

Claims (1)

Invention Formula A structure for regulating the water level in the watercourse, including the main water-action valve placed across the watercourse between the stations, the auxiliary surface gates, made in the form of a flat panel mounted on the horizontal axis at the outlets, and a flexible panel attached to the free edge of the panel and a flutbet, each chamber after: auxiliary gate starting from the main gate is equipped with a control piping, the input end of which is connected to the chamber, and one is located in front of the previous gate and directed in its direction, characterized in that, in order to simplify operation by increasing the efficiency of periodic washing of the upstream areas, I it is equipped with auxiliary bottom shutters made in the form of two chamber forming hinged flat panels, one of which is mounted on the horizontal axis at the base of the structure, and the other of the main gate, and control tubes interacts with guides made in the upper part of the abutments, and the bottom auxiliary gate lines, the output ends of which are located in front of the main gate, are provided with valves. ////////////////// GA /// 8 j Y /////////// FIG. 2 f9b-bfj. / / /////////////////////// ////////////   UTT; Fig.Z ///////////////////////, 7 FIG. The rigs are interleaved with surface auxiliary valves and located on both sides of the conduits, the output ends of which are located in front of the main gate, are equipped with valves.  iO f1 / it, N Fig.Z / 22 / 7777 / - -h --- - -. ; H / h / v ,: FIG. 6 YY //  ff / 7 5. v: H / h / v ,: