SU1522168A1 - Water level regulator in irrigation canal - Google Patents

Abstract

The invention relates to hydraulic engineering, in particular to devices for tubular outlets intended for controlling the level of water in irrigation systems. The aim of the invention is to increase reliability and speed. The goal is achieved by the fact that in the level regulator containing outlet outlet 1, gate 3, control chamber 5 with the first drain channel 8, float valve 17, membrane chamber 9 is also included, submembrane cavity 10 of which is connected to the first drain channel 8 a drain 11 and communicated with the atmosphere, and the supramembrane cavity 14 is provided with a second drain channel 16 with a float valve 17. 1 sludge.

Description

The invention relates to hydraulic engineering, in particular to devices for tubular outlets intended to regulate the level of water in irrigation systems, mainly when rice is excreted.

The aim of the invention is to increase the speed and reliability of the controller .:

The drawing shows the proposed controller.

At the outlet of the tubular outlet 1, a rotary shutter 3 located on the horizontal structure 2 of the structure is placed on the horizontal axis of rotation 4. A control chamber 5 made of an elastic casing located in the housing 6 is placed above the gate 3. The cavity of the control chamber 5 communicates with the headwater of channel 7 and is equipped with a first discharge channel 8.

I

The regulator contains a membrane chamber 9. The submembrane cavity 10 of the membrane chamber 9 communicates with the first drain channel 8, is equipped with a drain And, overlapped by the membrane 12 of the membrane chamber 9, and communicates with the atmosphere channel 13. Overmembrane cavity

14 communicated with adjustable tail through the height adjustable channel

15 at the level of the upper reach

and is provided with a second drain channel 16, on which a float valve 17 is installed, located in the housing 1 8 with openings 19. The housing of the diaphragm chamber 9 through the bracket 20, and the stopper 21 is mounted on the support 22, which serves as a measuring device for counting the filling depth regulated pool.

The regulator works as follows.

SP

N5 tsD

O5

WITH

In the absence of water in the regulated pool, the float valve 17 is lowered. Therefore, under the action of the water flow forces from the upstream side, the membrane 12 opens the outlet 11 of the first drain channel 8. Since the capacity of channel 7 is less than the capacity of channel 8, the cavity of chamber 5 is freed from water. In this case, the pressure acting from the upstream side to the shutter 3 opens the outlet 1, and the water enters the regulated pool.

When the controlled downstream reaches the lower value of the predetermined water level, the latter, through the openings 19, fills the tank 18, as a result of which the float valve 17 floats and closes the second drain, channel 16, which communicates the cavity 14 with the adjustable tail. Since the cavity 14 is without water, the membrane 12 is not able to block the drain 1I. Therefore, the outflow of water through the outlet 1 is carried out by a complete section. The outflow of water into the regulated pool continues to the full section until the regulated pool is filled to the upper value. When the regulated pool is filled to the upper level, water passes through the height-adjustable channel 15 to the cavity 14 and, since the area of the membrane 12 on the side of the cavity 14 is larger than on the side of the cavity 10, the membrane 12, which is under the water the channel 13, the air from the cavity 14 to the atmosphere, blocks the water flow 1 of the channel 8. When the drain 11 is closed, the control chamber 5 is filled, which, acting on the shutter 3, rotates it about the axis 4, as a result of which the water outlet 2 overlaps j and water does not flow into the regulated pool.

0

five

0

0

five

0

five

When the water level in the regulated bay decreases to the lower value of the predetermined level, the shutter 3 of the regulator is in the closed state, because at this time the float valve 17 is in the raised state and closes the second drain to the n 16 g, resulting in a cavity 14 is filled with water, and the membrane 12 blocks the drain 11. However, lowering the level in the regulated pool below a predetermined value causes the float valve 17 to lower, which opens the second drain channel 16, causing water to flow out of the cavity 14. Emptying ti 14 causes raising of the membrane 12 and the outflow of water through opiv 11. Expiration of water through the first drain channel 8 leads to emptying of the chamber 5 and to complete opening of the shutter 3, whereby the total cross section vodovypuskha water 1 is supplied, a steering tail water. In the future, the cycle of the level regulator is repeated.

Claims (1)

Invention Formula The water level regulator in the irrigation canal contains a tubular water outlet, at the outlet of which there is a butterfly valve, above which is placed a control chamber of an elastic casing, communicated with the upper reach and equipped with a first drain channel, a float valve, which has that, in order to increase the reliability and speed of the regulator, it contains a membrane chamber, the submembrane cavity of which is connected to the first drain channel, is equipped with a drain that is blocked by a membrane, and communicates with the atmosphere, and the supmembranous cavity communicates with an adjustable tail at the level of the upper reach. and is equipped with a second drain channel on which the float valve is installed. / V / y VOO / VX // vy / Js.4.N CHUCHV4X khhhhhuchuchhchtolu. / / L ////// /// / 3