SU1096616A2 - Two-side regulator of level in channel - Google Patents

Description

with

R

05

but

The invention relates to chalk 1; Horace lands, namely to devices for level control in channels.

On the main auth, sv. 1035575 a level regulator is known which contains a shutter with a vertical axis of rotation, a counterweight and a regulating element made in the form of a well with regulating weights installed in it, consisting of chambers, one of which is connected to the water level in the canal and the others to the ground level waters, and the regulatory loads are interconnected and through the cable-block system with a counterweight {ij.

The known device is based on the position that To each horizon of groundwater levels corresponds to a certain amount of moisture in the root zone of the soil. However, with the same horizon of groundwater levels, the moisture reserves in the soil aeration zone can vary over a wide range depending on meteorological conditions (precipitation, evaporation). In addition, even under the same meteorological conditions, the moisture reserves are not the same in areas occupied by various agricultural crops, due to different transpiration.

A disadvantage of the known device is the low accuracy of the regulation of the moisture reserves in the root zone of the soil.

The purpose of the invention is to improve the accuracy of regulation,

The goal is achieved by the fact that in a bilateral level regulator in a canape, the counterweight is made in the form of a housing filled with soil, installed in a protective casing and connected to the groundwater level with a pipeline, and a filter is installed in the lower part of the housing.

The drawing shows a schematic of a bidirectional level control in a can. ”

The regulator contains a channel 1 with peregoryaschaya wall 2 and the gate 3, rigidly connected to the vertical axis of rotation 4, at the upper end of which there is a block 5, bearing support b, a counterweight 7, connected by means of blocks 8 and cable 9 to the gate 3 and the regulating element volume 10, separated by watertight baffles 11 into chambers 1214, in each of the kotoiles are placed control weights 15 connected by a rigid link 16, Ground Well 17 is connected via pipe 18 to chamber 12, and cameras 12 and 14 are connected by pipe 19 between co oh. The chamber 13 is connected by a pipe 20 with a channel; one,

The counterweight 7 is made in the form of a hull filled with soil 21 from the reclaimed object with placed on

agricultural crops 22, Counterweight 7 is placed in a protective casing 23, Counterweight housing 7 is connected by a pipeline 24 to the groundwater level. In the lower part of the body of the counterweight 7 filter 25 is placed, °

The regulator works as follows.

With the position of the water level in the canal and the groundwater level at the calculated elevation level L, as well as with an optimal maintenance of moisture reserves in the counterweight housing 7, the shutter 3 is closed, there is no excess water and the discharge is not performed. The regulating element of the counterweight is in equilibrium. The weights of the loads G, 62 and 63 are balanced by lifting; by the forces of P, P and Pj and the weight of the counterweight 04.,

When the groundwater level rises to the h mark, the moisture in the counterweight increases, consequently, the weight G increases, as well as the pressure forces P and P, as a result of which the loads 15 rise a certain distance upwards, and the counterweight 7 drops down and equilibrium reappears. In this case, the shutter 3 will turn around a vertical axis at a certain angle and open a slit through which the reset will take place 1: 4 until the system returns to its original position. If the groundwater level is at the calculated elevation point ho and For some reason (for example, due to precipitation) an increase in the water zigass in the aeration zone of the soil 21 is more than optimal, the weight will increase, the counterweight 7 will drop, and the weights 15 will be raised and the system will take a new equilibrium position. In this case, the shutter will turn to a certain angle and open a slot through which water will be discharged until the system returns to its original position,

If the level of groundwater is at the calculated elevation hj, but for some reason the water rises in the canal, the lift force Pg will increase, regulating the weights 15 will lift i-muts, the counterweight 7 will lower, the shutter will turn through a certain angle, forming a gap , as a result, the excess water will be discharged. At the same time, with the lowering of the counterweight 7, the weight G increases, which increases the gap and accelerates the discharge of excess water in the channel. After the reset .in the original position.

If the groundwater level drops to the hj mark and water is supplied to the canal for humidification, the level in the canal will rise to the h mark (hh (,), determined by the calculation, to which the shutter will remain closed, which contributes to accelerated replenishment soil moisture. The soil for filling the counterweight is taken from the meliorated, and the soil profile is created exactly as it is in the regulated area, which provides an analogy to the moisture transfer processes in the counterweight and in the soil of the regulated area. The evaporation processes are provided by sowing on the soil surface of the same culture,

as in the regulated area. In addition, located in the immediate vicinity of the regulated area, the counterweight is always in identical weather conditions with the surrounding area. Therefore, the change in moisture reserves in the counterweight will be the same as in the soil in the regulated area.

The proposed controller is more accurate than the known one.

Claims (1)

BILATERAL LEVEL REGULATOR IN CHANNEL by ed. St. No. 1035575, characterized in that, in order to increase the accuracy of regulation, the counterweight is made in the form of a casing filled with soil, installed in a protective casing and connected by a pipeline to the groundwater level, with a filter installed in the lower part ^{1 of the} casing.