SU1252764A1 - Device for controlling water level in pools of water-development work - Google Patents

Abstract

The invention relates to the field of hydraulic engineering and is intended to regulate water in open channels, especially in irrigators. The device contains a water-filled sectoral shutter 2 mounted on a horizontal axis of rotation 1, with which the lever 21 is rigidly connected. The cavity of the bolt 2 communicates with the upper and lower pools through the first - fourth valves of the float sensors 23 and 13 levels of the upper and lower pools. The presence of the lever 21 makes it possible to increase reliability by opening the shutter when the level of the headwater falls below a predetermined level. 1 hp f-ly, 1 ill. / 3

Description

The invention relates to hydraulic engineering and is intended to regulate the level of water in open channels (especially in irrigators, the water from which is supplied by reverse flow of water, and the water supply is carried out under conditions of small hydraulic differences between the distributor and the irrigator.

The purpose of the invention is to increase reliability in operation by providing the possibility of opening the shutter when the level of the upper pool is lowered.

below the set mark. I

The drawing shows a diagram of the device

The device contains a sector shutter 2 mounted on a horizontal axis 1 of rotation, the cavity of which is supplied by a supply pipe 3 to the valve box cavity A. Box 4 is connected to the upper bay by an aperture 5 and pipe 6 T of the valve box cavity 7. The ice {w is communicated with the upper side of the pipeline 8 and with the lower side of the hole 9, and the hole 9. and pipeline 8 throttling the first 10 and second 11 valves mounted on the first rod 12, the float sensor 13 of the lower reach is installed on the same rod. Hole

5 valve box 4 and pipeline

6, the third 14 and fourth 15 valves mounted on the second rod 16 are throttled on the side of this box, respectively. The upper part of the second rod 16 is made in the form of a hollow cylinder 17 with a removable claw 18. The cover 18 has an opening through which the valve 19 is threaded The disk is an upram 20, the diameter of which is close to the diameter of the cylinder i7 and significantly greater than the diameter of the hole in the clip i 8. 1 tang 1 9 is passed through a hook 21 rigidly connected to the axis of rotation 1. An adjustable stop 22 and an upstream float sensor 23, which is loaded with ballast and at the same time acts as a drive, are installed on the rod 19. The location of the stop 22 and the float sensor 23 on the rod 19, as well as the loading of the latter by the baltast, is carried out so that when the level of water in the upper reach is below a certain minimum level 2D and the drag is 25

527642

In this position of the slide, the stop 22 engages with the lever 21, and the stop 20 does not affect the position of the second rod 16 in the lowest position of the latter. In this case, the moment of force of the weight of the float sensor 23 and articulated elements acting counterclockwise must exceed the moment of the weight of the shutter, and

 About the float sensor 23 in this position should be partially flooded (to compensate for the increase in the moment of force when turning the elevator). The device works as follows.

 5 way.

When the water level is in the upstream, somewhat level 24 of the float sensor 23 and the elements articulated with it, including the second rod 16,

20 are balanced by the weighing forces acting on this sensor. In this case, the stop 22 is located higher than the lever seat at the extreme upper position of the lever with the valve fully closed (the second rod 16 is in the extreme upper position, the hole 5 is completely blocked by the third valve 14, and the opening of the fourth valve 30 is 15 maximum. Water flows through the pipeline 8 from the upstream to the valve box 7 and through pipelines 6 and 3 into the cavity of the shutter 2. The difference in water levels in the upper basin and the cavity of the shutter, which determines the hydrodynamic pressure force on its radial face, depends on Aporia water valve box 7, which, in turn,

40 depends on the position of the rod 12 with valves 10 and 11, depending on the level of the downstream. As the level increases in the downstream, the float 13 floats, opening the hole 9

45 decreases, and the opening of the orifice opened by the valve 1 1 increases, the pressure of the water in the valve box 7 and the level of the flow in the cavity of the shutter 2 increases and the shutter closes. Similarly, when the level in the downstream is lowered, the rod 10 moves downward, the pressure in the valve box 7 drops, the valve is emptied through pipelines 3 and 6 and 55 version 9. Thus, the level of water P is stabilized.

With a decrease in the water level in the upper Riefe co-u-ARni (distributed

3

The main channel simultaneously performing the function 1: spillway) to level 24, which is lower than the water level stabilized in the downstream, flooding of the float sensor 23 decreases, it moves downwards, the rod 6 moves to the lowest position, the flow of water into the valve box 4 through line 6 is stopped and the valve is emptied through line 3 and hole 5 to the level of the upstream. Since the momentum of the hydrodynamic pressure forces does not affect the practical TH – TH iecKH gate, while the counter weight force force on the structures is counterclockwise over the counterpoint due to the appropriate choice of the mass of the float sensor 23 and the hooking of the lever 21 by the stop 22 and the water moves through the hydraulic circuit. structure in reverse 1 direction. Switching to the stabilization of the water level in the downstream occurs when the upstream canal is filled to level 24.

Claims (2)

The device ensures the stabilization of the water level in the downstream facilities of the structures in the water supply mode with high accuracy at differences between pools of 0.15-0.2 and provides automatic opening of the structure opening when WATER is discharged from the upstream to empty the network. Invention Formula one . A device for adjusting the level of water in water control pools Compiled by T. Zadvorna Editor V. Petrash Tehred M. Hodannch Proofreader V. But ha  - - --- -------- i ------. ,, .., ..,., Order 4620/48 Circulation 836 Subscription VINILI State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 ten 15 252 $ 30 20 25 five 7fS44 structures containing carbon-filled water-filled sector valve on a horizontal arrow, the cavity of which is communicated by flow pipeline with the upper and lower pools, the float sensor IornT lHKHer, connected through the first rod to the first and second valves, installed respectively between the lower and upper pools and the supply pipeline, the float sensor of the upper reach level connected by the second rod with the third and fourth valves, and the third valve is installed between the upper reach and the feed pipe one quarter and one quarter of the valve in series with the second valve, characterized in that, in order to increase operational reliability by allowing the shutter to open when the level of the upstream is lowered below a predetermined level, it contains a fish tail that is fixed on the horizontal the axis of rotation of the bolt, the free end of the tube, is located relative to the second stem, ensuring that the latter acts as it moves forward on the shaft. 2. A device according to claim 1, characterized in that the float sensor of the upper pool level p. Is loaded with ballast, and a stop is mounted on the second rod, which acts on the free end of the lever when the level of the upper pool drops below a predetermined mark.