SU631882A1 - Liquid level regulator in hydraulic engineering structures - Google Patents

Description

The invention relates to the field of hydraulic engineering and can be used to automatically regulate the water level on an intra-irrigation irrigation network. A device for adjusting the level of water 1 is known, comprising a float chamber with a float and a working chamber inside which is flexible, a membrane with a flow divider, the working chamber communicating with the float by means of a drain tube. This device does not provide separate level control for upstream and downstream. The closest in technical essence to the proposed is a fluid level regulator in hydraulic structures 2, which contains a float chamber, in the lower part of which there is a float with a valve. The valve seat is made in the pipeline that connects the float chamber to the working chamber, on which a membrane with a valve with a throttle located in it is flexible. A second pipeline with a nozzle connects the tanks of the upper and lower pools, the nozzle being the valve seat. The described controller does not allow adjustment of the headwater level. The purpose of the invention is to extend the functionality of the fluid level regulator. This goal is achieved by the fact that the liquid level regulator contains a third pipe and an additional float with a valve, the seat of which is made in the third pipe that connects the working chamber with the float chamber, in the upper part of which an additional float is located. The drawing shows the proposed fluid level regulator in hydraulic structures, a slit. The liquid level regulator contains a float chamber I, a float 2 with a valve 3, a pipeline 4, a working chamber 5 with a membrane b and a throttle 7, a pipeline 8 with a branch pipe 9, a reservoir 10 of the lower reach, a reservoir 11 of the upper reach, a pipeline

12, additional float 13 with valve 14, pipe 15, valve 16.

Floats 13 and 2 are located in different compartments of the float chamber. The upper compartment communicates with the upper reach through the connecting pipe 15, the lower compartment with the lower reach through the base of the float chamber. At the ends of the pipes 4 and 12, there are tips with saddles that overlap, respectively, with valves 3 and 14, which are rigidly connected to the float.

Regulation of water levels in pools can occur in the upper and lower pools.

When adjusting the downstream level, water supply to this downstream is through the liquid level controller at the normal level at the upstream when the valve seat 3 is closed and the valve seat 14 is open.

When a consumer refuses water, the level in the downstream increases, the float 2 rises and closes the valve 3 with the saddle in the pipe 4 connected to the working chamber 5. At the same time, the working chamber 5 creates a pressure equal to the water pressure in the upstream, and the membrane 6 overlaps the outlet of the pipe 9, stopping the access of water to the lower reach of the regulator.

When the water level in the downstream is lowered, the float 2 is lowered, the seat of the valve 3 is withdrawn, the water from the working chamber 5 flows out and its pressure decreases to a value corresponding to the pressure in the downstream. In this case, the membrane. 6 moves upward under the action of the differential pressure; 1siii and the water enters the lower reach through the nozzle P.

In the case of regulation but upstream in the absence of water flow to the lower bass () and aaKpijiTOM liquid level regulator, it is possible to raise the water level to the upper: vi during the emergency, when water is required to be discharged to the lower reach. Then, an additional float 13 is inserted one after the other, and the valve 14 opens the seat in the pipe 12. The pressure in the working chamber 5 decreases, the opening of the dross .1 7 opens and water flows through the fluid level regulator, just as when adjusting downstream.

If there are two, three level differences on the temporary irrigator and cascade regulation of the pools, the use of a1P1e liquid level regulators in hydraulic structures to regulate water supply in an open irrigation network allows:

a) to improve the irrigation technology in connection with the possibility of continuous movement of the sprinkler during irrigation along the entire length of the temporary irrigator;

b) save irrigation water (20-30 / o from water supply);

c) eliminate before. iio.MOHUiHKa irrigator in connection with the replacement of portable blind jumpers with an automatic fluid level controller.

The economic effect from the use of fluid level regulators is 160-200 rubles. per one time irrigation spill with the length of 600 m, if there are two or three level differences.

Claims (2)

1.Patent of France No. 2203395, cl. G 05 D 9/02, 1974. 2. USSR author's certificate JMb 423107, cl. G 05 D 9/02, 1971.