SU1023287A1 - Water level regulator - Google Patents

Abstract

WATER LEVEL REGULATOR precipitating water inlet in a vertical cylindrical pipe with a first bell installed above it. --H ..; ..-.:,., ;; 1 - LG-Eye,. The first venturi nozzle connected by nozzles to the upper and lower pools, the constriction of which is connected to the cap cavity, characterized in that, in order to improve the accuracy of the regulator, it contains the second, Venturi syringe, connected to the atmosphere and aarubs with the upper and lower tails, and installed in the downstream second cap, the cavity of which is connected 1 to the cavity of the first cap, and the end of the nozzle that informs that the first Venturi nozzle with the upper reach is installed at a predetermined elevation of the downstream a nozzle that reports the first the downstream Venturi nozzle is fitted with a valve connected to the float level sensor downstream.

Description

The invention relates to agriculture, in particular, to devices for regulating the water level in tubular water evacuation traps, mainly used in rice irrigation systems.

There are known devices for regulating neither water levels, containing a water-pumping bolt in communication with the upper and lower pools, and a hydraulic valve that blocks the drain hole. The hydraulic valve is connected to the piping with a level sensor, which is installed in the regulated pool Cl.

The disadvantages of the devices are 15

their reliability is low, due to the failure of the hydraulic system of the sensors, flooding of the water-filled capacity, jamming of the valve with floating debris.

A device containing a water outlet, made in the form of a vertically mounted cylindrical pipe located above the cylindrical nozzle of the cap, the cavity of which 25 is connected with an opening to the atmosphere, and a venturi nozzle installed between the upper and lower beams above the end of the cylindrical nozzle 12 J.

The disadvantage of this device is the impossibility of automatically carrying out a predetermined sequence of rice paddy irrigation and maintaining in it predetermined water levels.

The purpose of the invention is to improve the accuracy of the controller.

The goal is achieved by the fact that in a water level regulator containing a water outlet in the form of a vertical cylindrical pipe with a first collar installed above it, the first Venturi nozzle connected by nozzles to the upper and lower tails, the constriction 5 of which is connected to the cap cavity, contains the second Venturi nozzle combined with atmosphere and nozzles with. the upper and NIZHNT1M pools, and the second cap installed in the downstream i, the cavity of which is i-50 that is connected to the cavity of the first KOI pack, with the end of the patru6k; 55 reporting the first downstream Venturi nozzle, i the valve connected to the bottom float level sensor “6”

The drawing shows a water level regulator.

The regulator contains a vertically mounted (cylindrical) flowmeter 1 with a first cap 2 installed above it, connected by a branch pipe 3. with a second cap 4 installed in the rice receipt 5,

The cavity of the cap 2 is connected by a pipe 6 with a narrowing of the first Venturi nozzle 7, which at one end is connected by a pipe 8 to the upper buoy, the end of the nozzle 8 being located at a fixed elevation of the buoy. The other end of the pipe 8 is equipped with a valve 9 float gauge downstream (not shown). Underneath the second cap 4 there is a branch pipe 10 connected to the second Venturi nozzle 11, the other end of which is connected to the patra & 12 with the upper, pool; The constriction of the second Venturi nozzle 11 communicates with the atmosphere of the tube 13.

The regulator works as follows.

When the water level in the upstream is increased along the cylindrical water outlet 1, the groove in rice check 5 is flooded. The lower part of the second cap 4 is under water. Water, the passage through the nozzle 12 through the second nozzle of the Venturi 11, sucks air from the atmosphere through the nozzle 13, after which the water with air bubbles enters through the nozzle to the lower pool. Air bubbles, falling under the second cap 4, increase the air pressure under the second cap 4 and the first cap 2, CB5B with pipe 3, the increase in air pressure displaces water from the first cap 2 and the flow of water through the cylindrical water cap 1 into the lower buoy stops. Thus, the supply of water to all rice ices equipped with the proposed regulators is stopped. At this time there is a closure of channels that is always held before the flooding of rice checks after sowing.

Gfn further increase of water orom1 in the upstream (sprinkler) water enters the nozzle 8, the first weir 7 and through the nozzle 8 and the hole under the valve 9 of the float level sensor is poured into rice check 5, With 1 water flowing through the first BetffypVL 7 nozzle into it the constriction results in a vacuum, resulting from; air soy on pipe 6 from the first i college 2. The air pressure under the cap 2 drops and the water enters the water valve 1 in rice check 5. After filling the rice check to a predetermined depth, the kashan 9 floats of the level sensor p. movement through the first nozzle; Venturi 7 and suction of air from the hood of the cap 2 u) f | The air pressure in it of ssss increases Cu due to the constant air bubbles through pipe 10 into the cavity of cap 4 and then over patr at 3 into cap 2. At the same time, water is displaced from the cavity of cap 2 and the flow of water into rice check at the end of 1 tfekra shchaets. When the water level in rice check 5 decreases, the process of regulating the water supply repeats: similarly, with a further increase in the water level in the upper reach (sprinkler), water decreases the nozzle 8 of the next position and the adjustment process repeats in another rice a check that can not be watered in accordance with the requirements of the practitioner's hecnology. In this way, the regulator allows the automatic completion of drawing checks at a predetermined position of the nozzles of the Venturi nozzles in upstream, as well as maintain specified water levels in the paddy check, which increases the existence of water. labor productivity u) and po. , and the accuracy of water regulation is in accordance with the requirements of rice cultivation technology. The increase in labor productivity lies in the fact that the irrigator does not need to approach each individual outlet in the irrigation process. It is enough for him to control the head structure in the kart irrigator, which increases the amount of work done by 2 people by 2 times. Reliability and security distinguishes it from all known devices: from malicious predzhdeni and At the same time, the proposed controller works i in a wider range of hydraulic differential compared with, for example, siphon-type regulators. ;

Claims (2)

WATER LEVEL CONTROLLER, containing a water outlet in the form of a vertical cylindrical nozzle with the first cap mounted above it 2 6. com. the first venturi nozzle connected by nozzles to the upper and lower heads, the narrowing of which is connected to the cavity of the cap, characterized in that, in order to increase the accuracy of the regulator, it contains a second, Venturi nozzle connected to the atmosphere and nozzles with the upper and lower heads, and installed in the downstream, a second cap, the cavity of which is connected to the cavity of the first cap, the end of the pipe communicating; the first venturi nozzle with the upstream is installed at a predetermined elevation of the upstream, and the pipe communicating the first venturi with the downstream is equipped with a valve connected to the downstream float level sensor.