SU1184890A1 - Siphon-type regulating spillway - Google Patents

Description

The invention relates to hydraulic construction and can be used to discharge excess flood waters of ponds and other water bodies to completely empty them, as well as to automatically maintain specified levels in ponds.

The purpose of the invention is to increase the reliability at negative air temperatures.

FIG. 1 shows a vertical section along the axis of the siphon spillway-regulator and the supporting structure; in fig. 2 is a view A of FIG. one; in fig. 3 - section B — B in FIG. 2; in fig. 4 — section B — B in FIG. 3

The siphon spillway-regulator includes a waste pipeline that has a whole (walking branch containing an inlet tip 1, rigidly connected to an end section rotatable in a vertical plane, which is a movable cantilever 2, connected by means of a hinge 3 located below the average depth ^{of the} upper head which can be a pond with a fixed part 4, ending with a ridge 5 of the siphon located at the mark of the average depth of the upstream, and passing into the descending branch 6 with the end- 2 branch 7. The lowest point The ball joint 3 is connected by an empty pipe 8, designed to drain water from the ascending branch when not in operation, with the lower end of the descending branch 6. A lifting device 9 installed on the crest of the dam 10 (or on the ice protection supports) 2 ascending branches with the location of the input tip 1 to the desired level in the range from NLU to ULV. The input tip 1 is made in the form of a rigid structure with a smooth (bucket-shaped) outline with an inlet opening below it a coal-shaped form, in which the input threshold and the design level are located at the level of the lower forming input section of the ascending branch of the discharge pipeline, which ensures the design flow at the minimum forced level. The location of the ridge 5 at the average depth of the upper pool ensures the reliability of the automatic

Charging device in the range of adjustable levels.

Siphon spillway-regulator works as follows.

The movable console 2 through the lifting device 9 is installed in a position in which the input tip 1 is NPC. If the water level rises above the NHL, the water enters the discharge pipeline, displaces the air, and the spillway begins to work. When the level drops below the NPU, air enters the inlet tip 1, the vacuum in the pipeline breaks down and the spillway stops working. The remaining water in the ascending branch through the emptying pipeline 8 flows out completely, since the inlet of the pipeline 8 is located at the lowest point of the hinge 3, and the outlet is at the lower end of the descending branch, i.e. Pipeline 8 also operates in the siphon spillway mode until the ascending branch is completely free from the remaining water. If it is necessary to change the level of adjustment, with the help of a lifting device 9, set the inlet cap 1 to a level that needs to be maintained, and the siphon spillway will work relative to this level. In the automatic charging mode, the siphon will operate in the range of levels from the FSU to the mark of the average pond depth. If necessary, the complete release of the pond from the water moving the console 2 after the automatic charging of the siphon is lowered to the location of the input tip 1 at the level of dead volume. The siphon will still work until the pond is completely free of water.

The proposed implementation of the device allows to increase the reliability at negative air temperatures.

Installing the inlet cap at the NHL mark in cold time prevents it from freezing and the formation of an ice plug in it in working condition, and the automatic release of the ascending branch through an empty pipeline from the remaining water inoperative eliminates the formation of an ice plug in the ascending branch, which reduces the operation and increases device reliability.

FIG. 2

1184890

FIG. Have

Claims (2)

SIPHON WATER DRAIN-REGULATOR, including a discharge pipeline located in a retaining structure with upper and lower pools with an ascending and descending branches, a ridge and a terminal section rotatable in a vertical plane on a hinge that, in order to increase the reliability of work at negative air temperatures, it is equipped with an emptying pipe connecting the lower part of the hinge with the lower reach, and the turning end section adapted to the ascending branch, the comb relief conduit is located at the level of the average level of the upstream and hinge - below it. § 1184890 one 2