RU2006897C1 - Device for water level regulation in hydraulic structures - Google Patents

Abstract

FIELD: hydraulic engineering. SUBSTANCE: device for regulating water level in hydraulic structures has water outlet pipe 1 placed between upper and lower ponds and carrying on its outlet connection chamber 2. Additional pipe 5 is installed for displacement along tubular guide 6; upper ends of pipes 1 and 3 are joined together through bellows 3. Float 4 is fitted on bottom end of additional pipe 5. As water level in tailrace canal rises, float 4 goes up with the result that upper end of pipe 5 is pressed to cover of chamber 2 and flow area of pipe 1 is closed. As water level in tailrace canal decreases, float 4 goes down with the result that flow area of pipe 1 opens and water flows down over it. In this way water level is automatically maintained constant in hydraulic structure. EFFECT: improved reliability. 1 dwg

Description

 The invention relates to devices for regulating the water level in hydraulic structures, mainly in an irrigation network.

 A device is known for controlling the water level in hydraulic structures, which restrains a water outlet pipe located between the upper and lower pools, on the outlet pipe of which there is a chamber divided by a membrane into communicating sub-membrane chamber and a supra-membrane chamber equipped with a drain channel blocked by a float valve [1].

 The disadvantage of this device is the complexity due to the need to clamp a flexible tube.

 Closest to the proposed is a device for regulating the water level in hydraulic structures, containing a water outlet pipe with a bellows located between the upper and lower pools, a drain end of which is installed with the possibility of overlapping by a saddle, a float covering the water outlet pipe [2].

 The disadvantages of this device are the complexity and low reliability.

 The aim of the invention is to simplify the device while increasing reliability.

 The goal is achieved by the fact that the device for regulating the water level in hydraulic structures, containing a water outlet pipe with a bellows located between the upper and lower pools, the drain end of which outlet pipe is installed with the possibility of overlapping by a saddle, the float covering the outlet pipe of the water outlet, further comprises a drowned chamber, fixed at the outlet of the water outlet, while the outlet pipe of the water outlet is made in the form of an additional pipe installed inside the tubular th guide, fixed in the bottom of the chamber, and the drain end of the additional pipe located in the chamber is connected to the end of the tubular guide by a bellows, through the end of the additional pipe located outside the chamber, with a float, and the upper end of the chamber, which is a saddle, is set below the level of the upper head and above the level of the downstream.

 The drawing schematically shows a device for regulating the water level in hydraulic structures.

 The device comprises a water outlet pipe 1 located between the upper and lower concaves, at the outlet of which a muffled chamber 2 is mounted, a bellows 3 and a float 4 covering the outlet pipe of the water outlet 1. The discharge end of the outlet pipe of the water outlet 1 is installed with the possibility of overlapping the saddle, which is the upper end muffled chamber 2. The outlet pipe of the water outlet pipe 1 is made in the form of an additional pipe 5, mounted inside the tubular guide 6, mounted in the bottom of the chamber 2. The drain end to an additional pipe placed in the chamber 2 is connected to the end of the tubular guide bellows 3. The end of the additional pipe 5, located outside the muffled chamber 2, is connected to the float 4, and the upper end of the chamber 2, which is a saddle, is installed below the level of the upstream and above the level of the lower bief.

 The device operates as follows.

 When the water level in the lower pool rises, the float 4 rises, as a result of which the upper end of the additional pipe 5 is pressed against the upper end of the chamber 2, which is a saddle, and the passage section of the outlet pipe of the water outlet 1 is blocked.

 To increase the reliability of the overlap, the lid of the chamber 2 and the upper end of the additional pipe 5 can be cut off (not shown in the drawing).

 With a decrease in the water level in the downstream, the float 4 lowers, as a result of which the through section of the additional pipe 5 opens and the water rushes down it.

 In this way, a constant water level in the hydraulic structures is automatically maintained. (56) 1. USSR author's certificate N 1087967, cl. G 05 D 9/02, 1982.

 2. Copyright certificate of the USSR N 236046, cl E 02 В 13/02, 1967.

Claims (1)

 A device for regulating the water level in hydraulic structures, comprising a water outlet pipe with a bellows located between the upper and lower downflows, the discharge end of which the outlet pipe is installed with the possibility of overlapping by a saddle, a float covering the outlet pipe of the water outlet, characterized in that it contains a plugged chamber fixed at the outlet of the outlet pipe, the outlet pipe of the outlet pipe is made in the form of an additional pipe installed inside the tubular guide, fixed located in the bottom of the chamber, with the drain end of the additional pipe placed in the chamber connected to the end of the tubular guide bellows, the end of the additional pipe located outside the chamber is connected to the float, and the upper end of the chamber, which is a saddle, is installed below the level of the upstream and above the level downstream.