SU1448340A1 - Liquid level regulator - Google Patents

Abstract

The invention relates to hydraulic construction and can be used to automatically maintain a given water level both in the upstream and downstream irrigation canals. The aim of the invention is to improve the accuracy and simplify the controller. The goal is achieved by the fact that in a fluid level regulator containing a water-filled chamber 1 s communicated with the upper pool, a flexible valve 2, a float valve 6, a chamber 5 of the float valve 6, a control chamber 9,:) Control Chamber 9 rigidly fixed to the chamber 5 of the float valve, and between the control chamber 9 and the chamber 5 of the float valve a membrane 12 is mounted, rigidly connected to the float valve 6. 1 sludge. s С /

Description

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The invention relates to hydraulic construction and can be used to automatically maintain a given level of water in both the lower and the upstream of irrigation canals,

The purpose of the invention is to improve the accuracy and simplification of the regulator „

The drawing shows the 3 poB n plane control.

The regulator contains a water inlet chamber i with a flexible closure body in the form of a flexible reinforcing tape 2, connected by an inlet pipe 3 with an upper tail and an upper pipe 4 with a lower tail. On the outlet nozzle 4, the chamber 5 of the float valve 6 is rigidly fixed, the connecting rod 7 is on and the float 8 is installed on it. The controller contains a control chamber 9 fixed on the chamber 5. The control chamber 9 is in communication with the upstream pipeline lOj the end of which is installed at the level of a given level of the upstream, and is equipped with discharge II.

A membrane 12 is fixed between the control chamber 9 and the chamber 5, which is rigidly connected to the stem 7 of the float valve 6.

The fluid level regulator operates as follows.

Under the action of the force of hydrodynamic pressure of water from the upstream side to the flexible reinforced belt-2, it moves and opens the culvert opening, dropping the flow of water into the downstream. At the same time, part of the flow through the inlet pipe 3 enters the exhaust pipe 4, then into the chamber 5 of the float valve 6 and when the valve 6 is open, it is discharged into the lower pool. The downstream level rises and when it reaches the waterline of the float 8, it floats, covering valve 6 by means of a rod 7 rigidly connected to it.

The discharge of water from chamber 5 and the outlet nozzle 4 is stopped — the water through the inlet nozzle 3 enters the water-filled chamber 1, creates an overpressure, as a result of bending, the reinforced tape 2 moves towards closing the regulator’s culvert orifice. downstream.

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If the level of the downstream is significantly lowered, the float 8 is lowered, the valve 6 is open, the chamber 5 and the outlet nozzle 4 are emptied, creating a vacuum in the water filled chamber. The balance of hydrostatic pressure on the flexible reinforced tape 2 is broken and it moves inside the chamber , open aperture-regulator hole. The level of the downstream is stabilized at a predetermined elevation, valve 6 occupies a certain middle opening position, balancing the post-fall and outlet flow 5 from the chamber. When the water level in the upstream reaches the predetermined elevation level, i.e. mark the end of the pipeline O, water flows through it into the control chamber 9 and creates additional oppositely directed pressure on the membrane 12, which, bending, opens valve 6, inserting the float 8, the Chamber 5 and the outlet 4, are empty, creating The vacuum pressure in the chamber 1. The balance of hydrostatic pressure forces on the tape 2 is disturbed and it moves, opening the regulator's culvert opening by a large amount. The discharge of water from the upper pool increases and its level drops below the end of the barrel of the ore 10.

The flow of water into the control chamber 9 is stopped and residues. water flows through the drain hole 1 into the lower reach, reducing the hydrostatic pressure force on the membrane 12. The float 8 and valve 6 return to their original position, draining water from chamber 5 and pipe 4 decreases, and excessive pressure is created in chamber 1 causing the belt 2 to move in the direction of closing the culvert aperture. The regulator automatically switches to the stabilization level of the downstream.

Claims (1)

Invention Formula A fluid level regulator containing a water-filled chamber with an outlet nozzle and a flexible closure member communicated with the headwater through the inlet nozzle. 31448340 the cavity of which is in communication with the installed-for the purpose of povyenn accuracy and simplified rigidly on the inlet pipe of the regulator, the control chamber the camera of the float valve is connected-rigidly fixed on the chamber of the float with the control chamber, the sowing valve, between the controller with the upper reach at the mark behind the chamber and the float chamber, the level laid and equipped with a drain, the membrane is mounted characterized in that it is connected to the float valve.