SU962870A1 - Upper pond level control - Google Patents

Description

The invention relates to irrigation, in particular, to the automation technology of water intake units.

Known avtoregulators, consisting of two segmented valves, mounted on the same axis, control drives and counterweights and provide for the regulation of the level of the downstream on the mountain dam-free intake nodes 1.

However, these controls are not reliable enough.

Also known is the hydraulic autoregulator of the upstream level for mountain water intake assemblies, consisting of two segmented gates fixed on the same axis, a float drive, a counterweight and a level adjuster and ensuring the discharge of excess water and the passage of fin and sediment f2 3

The well-known auto regulator does not ensure the complete opening of the overlapping shield hole in the flood mode of the facility, since the shutter panels with their maximum opening are folded in the water, and the total opening of the shield hole is half of the design head, i.e. . which leads to an overstatement of the napai feTpbB structure. In addition, the presence of seals between the panels of the valves increases the force of friction, which leads to a decrease in the reliability of the device and to an increase in the parameters of the float drive.

The purpose of the invention is to increase the reliability of the hydraulic auto regulator and expand the range of its operation.

This goal is achieved by the fact that in the headwater level controller, containing sector closures,

15 installed on the horizontal axis of rotation, one rigidly and the other with the possibility of rotation, the first float balanced by the counterweight and installed in the Kewepe communicated with the upper reach through the tank with the level indicator installed in it and through the downstream through the drain hole, the shutter, rigidly mounted on a horizontal axis

25, it is designed as a hollow tank communicated with the upper tail pipe with a valve connected to the float installed on it, and the valve installed with the possibility of rotating 30 is made polm and connected to another shutter by means of a flexible water-resistant fabric. FIG. 1 pok; azan regulator, longitudinal section; in fig. 2 - the same, top view. The upper pool level regulator contains a shutter 1, made in the form of a hollow tank and rigidly fixed on the horizontal axis 2, rotation, on which the counterweight 3 is also rigidly fixed and the first float 4 placed in chamber 5 communicated with the upper reach by means of tank b and installed in it, the setting device 7 is level, and with the downstream it is a drain pipe 8. A shutter 9 mounted on a horizontal axis of rotation movably 2 is made hollow. To supply water to the tank 1, there is a nozzle 10 located in the lower part of the gate and shut off by valve 11 when reaching the calculated level in the upstream. Emptying the hollow tank capacity 1 is carried out through the drain hole 12. The valve 11 rotates freely on the axis 13, on which the second float 14 is rigidly fixed, located in the chamber 15, communicating with the upper reach through the flexible pipe 16 and the level adjuster 7, and downstream from the drain hole 17. The container of the shutter 1 and the hollow body of the shutter 9 are interconnected by means of a flexible, waterproof fabric 18, which makes it possible to eliminate the frictional forces between the shutters. The device works as follows. In the absence of water in the upper reach, the valves 1 and 9, under the action of their own weight and the weight of the float 4, are in the lower position in the flat state. As the level in the upstream reaches, water through pipe 10 begins to flow into the reservoir tank 1, and pour out of it through the drain port 12 at the same time, but since the inflow into the tank is greater than the outflow, the valve 1 capacitance begins to be filled with. Under the action of the hydrostatic pressure of water acting on the gate 9, made in the form of a float and freely rotating on the horizontal axis of rotation 2, begins to rise and the gate 1 remains in its lowest position, as the weight of water received in its shutter capacity 1. When the shutters are hermetically sealed by means of a flexible waterproof fabric 18 and a fully filled capacity of shutter 1, shutter 9 takes up its uppermost position and shutter 1 — the lowermost position is completely blocked. Verstov structures (gate closed position). With a further increase in the level in the upstream, water starts to flow into the chamber 5 through the supply tank 6 through the master opening, filling it because the inflow flow is greater than the outflow flow through the drain nipple 8. At the same time, through the other pilot hole, water flows through the flexible pipe 16 into the chamber 15. When filling the chamber 15, the float 14, rigidly fixed on the axis 13, actuates the valve 11, which closes the entrance to the nozzle 10, stopping the inflow of water into the cavity of the shutter 1, ensuring its emptying, and in connection with this blowing shutter 9 and discharge excess water through the top of the fin and its webs. When the container 1 is emptied, the valve 9 is lowered to its lower position, the total weight of the valve decreases, and the hydrostatic pressure of the riia increases by float 4. The valves in the folded state begin to rise, ensuring that water, fin and sediment are discharged through the top and under the cloth shutter (partial opening of the shutter). In case of flood costs, the shutters in the folded state occupy their uppermost position, ensuring the full opening of the structure opening (the shutter position is open). Equilibrium occurs when the flow of water through the opening of the setter 7 at the ram and the tank 6 is equal to the outflow from chamber 5 through the drain nipple 8. When the level in the upstream reaches low, water stops flowing into chamber 15 and the outflow continues from them, resulting in a float 4 begins to descend, and valve 11 opens the opening of the nozzle 10 and water from the upper pool begins to fill the tank 1, which ensures the movement of the valves to close the closed opening. The use of the proposed device for adjusting the level of water intake facilities in comparison with the known will allow to reduce the parameters of the shield hole by 30-40%, since the valve completely opens the shield hole when the structure is operating in flood mode. In addition, a reduction in the working elements in the closure and replacing them with lightweight, high-precision and waterproof fabrics will increase the reliability of the autoregulator and reduce the float drive parameters.

Claims (2)

1. Bochkarev Ya.V., Rahman A.I. Hydraulic autoregulator of the downstream level for mountain dam-free intake units of mixed action. Proceedings of the Kyrgyz Agricultural Institute. J .., K.I. Hide Bina Ser. engineering, vol. 17, t. 14, Frunze, 1972. 2. Authors certificate of the USSR 376521, cl. E 02 B 7/42, 1971 (prototype).  f autji