SU1282094A2 - Device for controlling water levels in irrigation systems - Google Patents

Abstract

The invention relates to hydraulic engineering, can be used to regulate water levels in irrigation systems, and is an improvement to the device according to the author. No. 809086. The device contains a shutter in the form of a flexible shell placed inside the outlet and equipped with inlet and outlet nozzles. A float valve is installed on one of the pipes. Additional inclusion of a perforated tape with edges fixed on the inlet nozzle, the end of which is placed between the edges of the perforated tape, which is connected to the float valve and the counterweight, respectively, at the top and bottom of the inlet nozzle; to ensure that the downstream is protected from being emptied in case of loss of command from the upstream and to increase reliability. 1 il. i (L

Description

go

00

1C

about

X) 4

N)

The invention relates to hydraulic engineering, can be used to control the water levels in irrigation systems, and is an improvement to the device according to the author. St. No. 809086.

The purpose of the invention is to protect the downstream from being emptied in case of loss of command from the upstream and increasing reliability.

The drawing shows a diagram of the proposed device.

The device contains a capacity of

flexible sheath 1 fixed inside down. Under the action of the counterweight of tubular vodotusk 2. Bending 12 tape 9 overlaps the inlet bore 1 has an inlet 3 and outlet 4 nozzles and a drain hole 5. The nozzle 3 is connected to the float valve 6, installed in the upper reach, and the nozzle 4 - with the float valve 7 installed in the downstream.

Side float valve 6

The upper pool has an inlet bore- At the level of the upper pool, on the eve of 8, the cross-sectional area of which is equal to the varnish of a given tape 9, the perforated tape 9, perforated tape 9, is larger than the cross-sectional area of the inlet section in which it is made in the middle of the longitudinal side with a hole of oblong shape in width, equality 8, stopping the supply of water to the flexible casing 1 through the inlet nozzle 3. Water through the drain hole 5 enters the casing 1, fills it and turns yvaet vodovtuska tubular hole 2 without allowing thereby emptying the tailrace.

25

water through the nozzle 3 into the cavity 1. In this case, the float valve 7, moving depending on the filling of the lower pool, adjusts the damage to the diameter of the inlet 8. The perforated ribbon with 9 edges is fixed on the inlet 3, the end of which is placed between the perforated edges tape 9. And the edges of the perforated tape 9 is fixed

so that at the maximum and minimum levels of water in the upper reach, the inlet 8 is closed. The first-40 avto foriv tape for 9 above the inlet nozzle 3 is connected through 10 to the float valve 6, the float stroke of which is controlled by the stopper 11. Perforated tape 9 at the bottom of the inlet 3 is connected to the counterweight 12 "

The device works as follows.

Device for regulating water levels in irrigation systems

No. 809086, characterized in that, in order to protect the downstream from being emptied when command is lost from the upstream and increase reliability, it contains a perforated tape, the edges of which are fixed to the inlet nozzle, the end of which is placed between the edges of the perforated tape, which is above and below In the case of filling the upper reach 50 of the inlet branch pipe, the maximum permissible value is connected, respectively, to the float valve and to the float valve 6, floating up, counterweight, and Formed is placed on the bar 10 up to the stop in the stopper, the tape is placed with the possibility of over-11. The interaction with the stopper 11, the end of the inlet pipe and its float valve 6 through the vertical displacement of 10 55 moves the belt 9 upwards, which is him

It leads to the overlap of the inlet of B.

At the same time, at a given level of water in the downstream and closed float valve 7, the water filling the flexible casing 1 is forced out of it through the drain opening 5. Emptying the casing 1 leads to the outflow of water from the upstream through the vodovtusk 2 into the downstream, thereby protect it from overflowing.

When the water level in the upstream is lowered below the minimum permissible value, the float valve 6 is lowered 5 down. Under the action of the counterweight 12 tape 9 overlaps the input hole

Step 8, stopping the flow of water into the flexible casing 1 through the inlet nozzle 3. Water through the drain opening 5 enters the casing 1, fills it and closes the opening of the tubular flow outlet 2, thereby preventing the lower reach.

 At the level of the upper reach within the predetermined band, the tape 9 is positioned with its opening against the inlet opening 8, giving free passage

35

water through the nozzle 3 into the cavity 1. In this case, the float valve 7, moving depending on the filling of the lower pool, regulates the level in it in the same way as in the known device.

Claims (1)

Invention Formula 40 on av. Device for regulating water levels in irrigation systems No. 809086, characterized in that, in order to protect the downstream from being emptied when command is lost from the upstream and increase reliability, it contains a perforated tape, the edges of which are fixed on the inlet branch pipe, the end of which is placed between the edges of the perforated "Q