SU1062655A1 - Device for water distribution control in water supply systems - Google Patents

Abstract

DEVICE FOR CONTROLLING WATER DISTRIBUTION SYSTEMS WATER comprising hosted on razlnchnoy height flowline reservoirs arranged therein regulators layer, a pressure sensor in the pressure line associated with the pump control unit unit, characterized in that, with a view to the Enhance reliability by Rasschirennaya range between pressures of switching on and off of a pumping unit, it contains a bypass device located in the tank with the highest height, made in the form of a housing, on the inlet pipe of which, connected to the pressure pipe, there is installed a sleeve with side holes, and two floats connected to the guide pipes. With side holes, one of which is connected to a spring loaded piston, the sleeve and the other is installed in the opening of the lid of the housing of the bypass device.

Description

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This invention relates to an agricultural water supply and is intended to automatically control water supply in pressurized water systems.

Known control systems are pumping units for differential water levels in a water pressure tank, which operate with float or contact level sensors installed inside a water pressure tank. In this case, the connection between the level sensor and the pump unit control station is via a low-voltage air or cable line f ij.

The closest in technical essence to the invention is a device containing, at various heights of the pressure pipeline, tanks with level regulators located in them, a sensor for controlling the pump unit connected to the control unit of the pump unit.

The device provides on-off control of the pump unit with respect to the pressure in the pressure pipe, where the pump unit is switched on and off depending on the pressure corresponding to the lower and upper water levels in the water-pressure tank 2.

The main disadvantages of the known system are the need for a large column of water in the tank to obtain a sufficient range between the on / off pressure of the pump unit, especially in high-pressure water supply systems, the increased-sensitivity pressure switch, the high and expensive water-pressure tank, and the impossibility of using it in pressure water lines low tanks.

The aim of the invention is to increase reliability by expanding the range between the on and off pressures of a pump unit.

The goal is achieved by the fact that the device for controlling water distribution in water supply systems, containing tanks at different heights of the discharge pipeline with located level controls, a pressure sensor in the pressure pipeline connected to the pump unit control unit, also contains a bypass device positioned at the highest height of the location) tank (made in the form of a housing, at the entrance), the sleeve of which is connected to the pressure pipeline; with lateral apertures and two floats connected to the guide pipes with side openings, one of which is connected to podpruzhinenigm piston mounted in the sleeve, and the other is mounted in the opening of the bypass housing cover device.

FIG. 1 shows a device for controlling water distribution in water supply systems; in fig. 2 - bypass device.

The pump unit 1 (Fig. 1) supplies water through the pressure pipe 2 to the tanks 3, inside which are installed the level 4 regulators and the bypass device 5 connected to the pressure pipe 2. The pressure sensor 6 is also connected to the latter, electrically connected control unit 7 and pumping unit I.

The bypass device (Fig. 2) consists of a housing 8, to the bottom of which a sleeve 9 is attached. Inside the latter there is a piston 10 with a spring 11 and a bottom float 12 with a guide nozzle 13 provided with openings 14.

The upper part of the sleeve 9 is located inside the housing 8, provided with openings 15 and 16. On the cover of the housing 8, there is mounted a sleeve 17, an upper float 18 with a direction fitting 19, provided with openings 20 closed by a filter 21 from above.

The pump unit 1 (Fig. I) supplies water through the pressure pipe 2 to the tanks 3 when filling up to the given upper level the level 4 controllers stop the flow of water.

When the discharge pipe 2 is filled with water, the lower float 12 is closed by the action of Archimedes force, then, together with the piston 10, the spring 11 is compressed, it rises up under the pressure of water in the pressure pipe 2. And the water enters the housing through holes 16 8. At the same time, the air from the housing 8 is forced into the atmosphere through the holes 20.

When the housing 8 is filled with water, the upper float valve 18 is closed by the force of Archimedes, and then pressed under the action of water pressure.

When the set off pressure is reached, the pressure sensor 6 sends a signal to the control unit 7 and the pumping unit 1 turns off. As the pressure in the pressure pipe 2 decreases, the piston 10 together with the bottom float 12 gradually descends down to the stop under the force of the spring 11.

After a specified volume of water has been consumed in any of the tanks, the level 4 regulator opens and water flows from the pressure pipe 2 to the tank under the action of a water column. At the same time, in the by-pass housing 8, the water level drops, the upper float 18 drops down and opens. As a result, the cavity of the housing 8 communicates with the atmosphere through the openings 20. From the housing 8, water flows into the pressure pipe 2 through the openings 15 and 16.

When the water level in the pressure pipe falls below the bottom float 19

the latter goes down and opens. As a result, the water-free cavity communicates with the atmosphere through the air ports 14.

When the water column in the pressure pipe 2 decreases to the switch-on value, the pressure sensor 6 sends a signal to the control unit 7 and the pump unit I starts up. The water flow through the pressure pipe 2 to the tanks 3 is resumed.

The procedure described below for the operation of the automation system is repeated.

The system of automatic control of the pump unit in the water mains has the following technical and economic advantages as compared with the base object.

The base system is not specifically designed for use in multi-reservoir systems, so if it is used, water is allowed to flow from the highest reservoir to the lower ones, when a portion of the water is consumed in the latter. This is due to the fact that it is not possible to install a level regulator in the highest tank because the hydraulic connection of the water column in the tank and the pipeline is interrupted (i.e. it does not act on the pressure sensor). Therefore, when using a base system, a high-pressure water reservoir is required to contain a supply of water.

Inside each tank of the proposed device, level controls are installed that prevent the backflow of water from the tanks to the pipeline. The volume of even the highest reservoir is determined only by the flow of water consumers connected to it. In addition, the path of movement of water from the water source to the consumer is shortened, and the latter uses more fresh water.

In addition, it is possible to reduce the diameter of the pipeline.

Due to the lack of a constant hydraulic connection between the pipeline and the tanks (due to the level controllers), even when the pipeline is broken, the water supplied to the tanks is not lost to the discharge, but is used by the water consumer.

In the proposed system, due to the bypass device, unproductive water flow, due to its leakage from the pipeline, is sharply reduced because only that portion of the water that is in the pipeline and the bypass device can be discharged.

By expanding the range between on and off pressures, the range of use of the pressure automation system is expanded, simpler, less accurate and cheaper pressure relays are used.

The automation system is more reliable in operation because, due to the widening of the range between the on and off pressures, the influence of hydrodynamic processes in the pipeline on the formation of the off signal of the pump unit is weakened.

The bypass device has a simple design, but ensures stable operation of the system and the allowable frequency of switching on the pump unit in case of water leaking from the riser pipeline to the perod and the absence of water intake from the water supply system, and contributes to the suppression of the hydraulic surge.

In connection with the automation of pressurized water pipelines with a small column of water in tanks, it saves costly drinking water and lowers operating costs.

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Claims (1)

DEVICE FOR MANAGING WATER DISTRIBUTION IN THE SYSTEM WATER SUPPLY TOPICS, containing tanks located at different heights of the pressure pipe, with level controls located in them, a pressure sensor in the pressure pipe connected to the control unit of the pump unit, characterized in that, in order to increase reliability by expanding the range between the pressure on and off the pump unit , it contains a bypass device located in the highest tank location, made in the form of a housing, on the inlet of which is connected with a pressure pipe, a sleeve with side holes is installed. and two floats connected to guide pipes with side holes, one of which is connected to a spring-loaded piston installed in the sleeve, and the other is installed in the hole of the cover of the bypass device. with <g ω