SU1528856A2 - Drainage system - Google Patents

Abstract

The invention relates to agriculture and can be used for draining overmoistened soils. The purpose of the invention is to increase the operational reliability of the drainage system. The drainage system includes a water intake 1, a closed collector 2, drainage driers 3. Drainage drains 3 have a working branch 4 with a backward slope at the end and a washing branch 5 equipped with a plug 6. The wellhead part of the working branch 4 is equipped with a knee-shaped branch pipe 7 with bend 8, facing up, and section 9 of the vertical bend of the nozzle 7. The orifice portion of the collector with working 4 and flushing 5 branches is made removable. The end section of the working branch 4 is located below the axis of the washing branch 5 by an amount ΔН determined by the formula ΔН = Α ^. D _п.в , where D _п.в - diameter of the washing branch, m

α is the experimental coefficient, α = 1.5 - 2.0. 2 hp f-ly, 2 ill.

Description

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The invention relates to agriculture and can be used for draining overmoistened soils.

The purpose of the invention is improving the operational reliability of the drainage system.

FIG. I shows the drainage system, the longitudinal profile along the axis of the collector; on fi1. The same for the drainage system variant.

The drainage system (Fig. 1) includes a water inlet basin 1, a closed collector 2, drainage towers 3, a working branch 4 with a backward slope,; a wash-out branch 5 equipped with a slab b; 8, facing upwards, and cut 9 of the vertical elbow of the nozzle 7.

In the variant of the drainage system (Fig. 2), the mouth of the closed collector 2 with the working 4 and the washing branch 5 B1) 1г1 is detachable and hermetically connected to the collector 2 of the clutch K).

The drainage system acts in the following way.

During the period of excessive moistening, the water entering the collector 2 from the drains of the L. Zapolp is e working 4 and leaching 5 branch, closed zag. by piece 6, wellhead part co. The hubs 2, when the working branch 4 is completely filled and the water overflows through the nozzle 7, acts as a siphon, drastically draining the drainage water, creating a vacuum in the collector 2, increasing the speed and removal of sediment from the collector 2, preventing siltation. vector 2. For freezing water in the mouth of the system and ei o damage during the winter period of blind 6 from the washing branch D) is removed or alternatively, the circuit K 1H1: 111 с1 с i . ibi Boii gok collector 2 with working 4 and prom1.1M- Hoii b branches (fig. 2)

The wellhead part of the collector 2 with the working 4 and washing branches with branches performs 0

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With metal or plastic pipes, the coupling 10 can be made of an elastic material and sealed, for example, with clamp-type connecting devices.

The device of the end section of the working 4 branch to the value of Ah prevents the breakthrough of air into the nozzle, contributes to its operation by the total cross section and is determined by the following relation

h aDn.ft

where h is the excess of the wash-out branch of the collector over the end section of the working branch, m;

Dn.j diameter of the washing branch, m; but. experienced ratio.

The limiting factor ": 1.5-2.0 is adopted for the minimum possible cut of the koleioobrazny pipe when using the invention on operating systems, during construction according to the invention, the cut is arranged depending on the depth of the reservoir and the level of the bottom of the water intake.

F (rmu.sh acquisition

Claims (2)

1. Drainage system according to ed. St. No. I 122779, characterized in that, in order to increase operational reliability, the working branch in the mouth of the collector is made in the form of a knee-shaped nozzle, facing end sections with a section in the receiving water. 2. The system according to claim 1. characterized in that the mouth of the collector with the working and washing branches is removable. ,}. C, the system is in accordance with claim 1, characterized in that the end section of the working branch is located 1 and the same (.1SI of the washing branch and the value Nil. Determined by the formula  D / L5; | de transfi cation of the branch of the collector above the end section of the working branch, m;  diameter of the washing branch, m; a is the experimental coefficient, a; 1.5-2.0.