SU432886A1 - AUTOMATED RISK IRRIGATING SYSTEM - Google Patents

Description

one

The invention relates to the field of amelioration of agricultural land and can be used on automated irrigation systems.

Automated rice irrigation systems are known, which include: a water intake unit, a main canal with cascade water supply with automatic regulators of hydraulic action, and irrigators with automatic machines for maintaining a constant water layer in checks.

The known systems are characterized by unproductive water discharges due to automation, water distribution only on the feed (irrigation) canals and rice paddies, as a result of which, when there is no water consumption, there is excess water going to the discharge.

Modern rice irrigation systems, the construction of which is usually carried out on floodplain lands, are designed and built in open land canals in cushions of local soils, which in the first year of operation lead to a loss of slopes. Measures to strengthen the canal slopes (concreting and film coating) are very expensive and time consuming. The construction of water supply systems in pressure pipes is a more efficient solution. However, with large channels of rice systems and relatively high costs, it is necessary to use high-pressure large-diameter pipes and to build a powerful pumping station to overcome head losses along the length of the water supply path. This causes a rise in the cost of construction and labor-intensive operation. The purpose of the invention is to reduce the cost of rice systems and eliminate unproductive water discharges. ... ....., .., ...., - For this, the system is equipped with axial pumps built into the main channel, which is closed, in the water intake section and in the junction areas of the cascade sections. In order to eliminate unacceptable pressures in the main canal, equilibrium pipes-bridges are installed on the latter, matching with the canal on the side of the lower runoff by means of axial pumps and made with a dividing partition ensuring a constant water level in them. The drawing shows a basic scheme of a mechanical cascade water supply with a direct hydraulic connection to the rice irrigation system using an axle and outlets of submersible pumps of the OPV type.

The automated rice irrigation system consists of a pumping station I, replaced by pumping units with OPV pumps. Pumps of the type OPV are lowered into the reinforced concrete pipe 2 with the inverse filter 3, which also plays the role of a fish barrier.

Winch 4 is provided to lift pump I from pipe 2.

Pumps I supply water to an equalization pipe — one with a partition 6. Partition deaf — a partition 6 divides a pipe — five to two parts — prevents the section of the water line 7 between two outflows from emptying if the pumps are stopped and maintains a static static pressure on it. plot.

Since the OPV pumps develop a slight pressure, then along the length of the main conduit 7 a number of additional pumps OPV 8 are installed, which provide the necessary pressure in the sections of the conduit.

The OPV pumps are built into the water conduit and equipped with devices for their storage.

There are facilities on all main water and water - water outlets with an automatic shutter of Hydraulic action operating depending on the level

water in the irrigator. The sprinkler during the period of flooding of checks and keeping a layer of water in them is always filled and has a horizontal surface of the water, which is provided with horizontal edges.

The system works as follows

The cascade water supply scheme involves the use of axial pumps of type OPV, instead of stationary pumping stations.

Since OPV pumps develop a head of no more than 4.5-6 m, the main water supply route is divided into areas with local pumping and construction, which take into account the peculiarities of these pumps.

Pumps I of the first cascade supply water to the pipe-one to 5 with a partition 6, the upper edge of which is located at water marks. The length of the water line between the pumping installations depends on the diameter of the water line, flow through it, and pressure of the OPV pumps, i.e. losses from the head in length, and is set by hydraulic calculation. The height of the surge pipe 5 depends on the gauge head of the OPV pump and usually does not exceed 5-6 m. The main water line ends with an end balance pipe 9, without a partition, designed to maintain a constant pressure at the end portion of the conduit. Each pipe-to-k is equipped with a ypvn relay, which automatically turns on or off the booster pump on the main water conduit, depending on the water level in the tower. OPV pumps are equipped with protection that prevents the inclusion without water.

filing. As the first water supplying cascade is filled with water, consisting of reinforced concrete free-flow thrusters, pumps of the second cascade, etc., turn on. In the absence of water pumping in the irrigators, there is an increase in the level in the equalizing pipe-ke, and the level switch, installed in the tanks, gives an impulse to turn off the pumps,

. With several pumps, the level switches can be installed at different heights and ensure the step operation of the pumps.

When all pumps on the water supply line are turned off, the water will remain in the water lines due to the presence of deaf partitions in the pipes. The system is drained for the winter due to the emissions provided for in the lower sections of the water supply route.

From the main conduit 7 water flows through the outlet and into the sprinklers,

Water outlets are equipped with automatic water level regulators that operate depending on the water level in the irrigator.

The automatic controller has a manual locking device to shut it off during the period of the otorokneninin checks or the entire system.

From the irrigator water through the outlet passes to the check. This outlet is also equipped with an automatic hydraulic action regulator supporting a constant water layer in the check.

Thus, during the period of flooding checks and maintaining a layer of water in them, all processes in the system are automated, and the regulation of the system depends only on the installed layer of water in the check.

If it is necessary to change the water level in the check, it is enough to change the installation on the machine located at the outlet in the check.

Due to the use of the cascade water supply system, non-productive water discharges are excluded.

from the system and the cost of electricity, the effect of automation and start-up of pumping units was achieved, the need for building the building of the pumping station was eliminated, the use of large-diameter non-pressure reinforced concrete pipes was increased, the efficiency increased. ckiCTemy, reduced construction time, as the entire system is assembled from precast concrete elements. In addition, work can be conducted all year round.

5 Economic comparisons have shown that the proposed system is 2-3 times cheaper in terms of the cost of conventional systems and 1.5-2 times cheaper in operation.

According to the calculations, the water supply system from the pump 1W OPV, built into the water conduit, coins can also be used for ordinary irrigation systems with 5 geometrical differences between the irrigation source and the water supply point not more than 25-30 m.

SUBJECT OF INVENTION

thirty

Claims (2)

1. An automated rice irrigation system, including a water intake unit, a main channel with cascade water supply and automatic controllers of hydraulic action, and irrigation systems with automatic machines to maintain a constant water layer in the checks, which is different in that, in order to remove. system and eliminate unproductive discharges; the system is equipped with axial pumps embedded in the main channel in the water intake section and mating areas of the cascade, with the trunk channel closed. 2. The system according to claim 1, characterized in that, in order to eliminate unacceptable pressures in the main canal and to enable the use of pressureless pipes for the main water supply, on the main channel, equalization pipes-sets are installed, which mate with it from the side of the lower rift by means of axial pumps and are made with a dividing partition ensuring a constant water level in them.