SU364720A1 - IRRIGATING SYSTEM - Google Patents

Description

one

The invention relates to the construction of structures in irrigation.

At present, irrigation systems have been used, consisting of open gravity canals and blocking structures reinforced with automatic valves with sensors of water levels of the upper and lower pools. The sensors are located, respectively, in the upper and lower pools of that barrier structure, on which the automatic valve is located, which regulates the water levels.

The disadvantages of such irrigation systems are the low system speed, the presence of large reserve volumes of water for creating hydraulic feedback along the flow, etc. The presence of large reserves of water causes large construction costs for the canal dams, increases the amount of water filtration, and drainage network, etc.

The proposed irrigation system does not have these drawbacks and differs from the known ones in that the water level sensors of each barrier structure, except for the head and end structures, are located respectively in the downstream of the overburden and in the upstream of the underlying overburden structure.

The connection of the water level sensors with the gate valve is carried out via an external zero-speed connection (electric, hydraulic, pressure pipe, pneumatic, or their combination), which allows a significant increase in the speed of the system as a whole.

FIG. 1 depicts the described irrigation system, a longitudinal section; in fig. 2 - the same plan view.

The open gravity canal is divided by sections / -4. The outlets Qi, Q2, Qs are located in the upstream of the blocking facilities. The latter are reinforced with automatic-leveling arresters АРУ1, АРУ, АРУз, АРУ - by auto level regulators, which regulate the water levels of the upstream and downstream. The water level sensor of the upstream of the considered automatic valve, for example, AGC2

placed in the downstream of the overlying structure 3, and the downstream water level sensor in the upstream of the underlying structure 1. The lower and upper water level sensors

bays, automatic shutters of automatic control devices installed on the PS similarly placed on all sections of the channel, except the head and end structures. The water level sensor of the upstream D of the automatic control unit of the AGC of the head structure is installed in the downstream of the head structure itself 4. The downstream water level sensor /) .; installed in the upstream of the underlying structure 3, and the water level sensor of the upstream nnl of the located LRuz automatic shutter is located in the downstream of the headwork 4.

Water level sensors () i, Z) i of the automatic shutter of the automatic control system of the end structure / are installed respectively in the upstream of the end structure 1-D ° i as an emergency sensor and in the downstream of the overlying structure 2. In the upstream side of the structure} there is a water level sensor located downstream of the AURu automatic shutter. Such an arrangement of sensors connected to the automatic shutters of an external inertialess communication can significantly improve the reliability of the system, reduce idle discharges of water ) In general, due to the introduction of inertialess communication, it is possible to significantly improve the speed of the system.

The described irrigation system works as follows.

Opening the discharge plate Q2 by an estimated amount increases the flow rate in the outflow Qs to AQ and the water level at level I-I decreases. In this gate, there is a water level sensor installed on the automatic shutter, which instantly transmits information about the low level of water in the I-I gate of the automatic AGC shutter. The latter opens slightly and passes the additional flow rate AQ into the section of the channel between the blocking structures 3-2. With the opening of the AGC automatic shutter, the water level of the downstream of structure 3 rises and the water level of its upstream is lowered. Sensor D.j transmits information about the lowering of the water level of the upstream structure 3 of the AGC automatic shutter installed on the head structure. The AGC / automatic shutter opens and passes additional flow AQ into the section of the ram between the partition structures 4-3. Thus, almost simultaneously, with the opening of the outlet outlet, the automatic valve APyz and AGC on the main structure also opened, supplying the required flow rate of AQ to the irrigation system.

With the opening of the LRUz automatic shutter, the water level of the downstream structure 3 increases, where the AGC automatic shutter sensor is located, which transmits information on the increase of the water level in the lower side of the structure 3 and causes the AGC automatic shutter to close. On closing of the Arug, the water level in the upstream of structure 2 rises, due to which the water level in level I-1 is leveled.

The sensor does not disturb the alignment of the water level at the / / / gate and the AGC valve returns to its original position, leveling the water level at

the upstream side of structure 3, which is transmitted via sensor Z-4 to the AGC automatic shutter, setting it back to its original state. Having covered, the AGC automatic shutter lowers the water level in the downstream of structure 3 to its original state, which is transmitted by the sensor to the AGC automatic shutter, opening it.

During the adjustment, additional

AQ flow spreads as per length

section 4-3, and the length of the section 5-2,

setting the initial water level

in system.

The operation of the system in the channel section 2-1 differs from the above in that, in the initial state, the LRU shutter is closed. Then, when closing the automatic shutter Aruch, the water level in the lower

the pool of structure 2, information about this is transmitted by the sensor to the AGC automatic shutter installed on the terminal structure 1, opening it. When the AGC opens, the pony / ka is the water level in its headwater,

the sensor transmits information to the AGC automatic gate, causing it to open, but at the same time information about the CLNT closure comes from sensor D, since the information of the sensor Z) comes in initially,

then the AGC automatic shutter closes and, when receiving information from the sensor, remains in a certain equilibrium state until the water levels are equalized due to the additional flow of AQ in the channel sections.

Subject invention

Claims (3)

1. An irrigation system consisting of an open gravity canal and a blocking structure reinforced with automatic valves with water level sensors of the upper and lower pools, characterized by TITO, in order to reduce reserve volumes of water in the canal sections by increasing the system speed, the water level sensors of each blocking structure, except for the head and end, are located respectively in the downstream overlying and in the upstream downstream part of the overburdening building and connected to the gates-machines of the outer low-inertial section zyu for example type of pressure pipeline. 2. The irrigative system of Claim 1, characterized in that, in order to increase the efficiency factor. The systems, sensors of the water level of the automatic shutter of the end structure are located in the upstream of the end of the end and in the downstream of the overlying but not blocked part of the overburden structure. 3. The irrigation system of claim 1, characterized in that, in order to increase the reliability of the irrigation system, the sensors 56 the automatic shutter of the head structure to the flow of the blocking structure and in the trap in the upstream of the downstream side of the headwater itself. 364720