RU24004U1 - WATER PRESSURE REGULATOR - Google Patents

Description

M.KA.G 05D16 / 06

WATER PRESSURE REGULATOR

The proposal relates to sanitary engineering and can be used mainly in internal systems of cold and hot water supply, for regulating water pressure.

A device for floor pressure control in the water supply system 1, comprising a housing, a spool with a conical seal, a high and low pressure chamber and a spring-loaded membrane located in the low pressure chamber, as well as an auxiliary spool, in order to increase reliability.

Also known is a direct-acting gas pressure regulator 2 containing a sensing element mounted in a control chamber and interacting with a spring-loaded stem with two poppet valves.

Taking into account the similarity of the structural-functional diagram, a device for automatic regulation of gas pressure 3, which contains a nozzle with an adjustable hole, is taken as a prototype of the proposed controller.

When used in the field of water supply with lime, control devices have two significant drawbacks:

coarse suspended particles contained in the water (sand, particles torn from the pipeline due to corrosion, etc.) involved in the flow pass through the through-hole and accumulate under the regulatory body, as a result of which its operation is disrupted or stops,

when supplying water intermittently, when the pumps are turned on and off, the working bodies of the regulator are subjected to water hammer, as a result of which their service life is reduced.

Water hammer is usually accompanied by noise.

In order to eliminate these drawbacks, the control chamber is isolated by a partition from the output chamber, and their functional connection is provided by an additional hole that passes through the housing and connects the control and regulation chambers without disrupting the flow of the working medium.

As a result of a structural change in the controller, coarse suspended particles passing through the through hole cannot accumulate in the control chamber due to lack of access. They also cannot penetrate into the control chamber due to the lack of flow in this direction. Thus, mechanical particles do not accumulate in the regulator, but are removed through the water fittings.

Due to the structural change, the governing and regulatory bodies are subject to weak hydraulic shock, as the force of the blow is taken over after it is extinguished. The pressure fluctuation that takes place behind the regulator is first transmitted through one hole to the control chamber, and then by another hole into the control chamber.

In FIG. 1 is a longitudinal section through a regulator, and FIG. 2 is a section AA.

The controller comprises a housing 1 having an input 2 and an output 3 chambers connected by a passage hole 4. In the upper part of the housing is a control chamber 5, and in the lower part there is a control chamber 6, which are separated by a seat 7. A control chamber with one hole 8 communicates with the output chamber , and another hole 9- with a control chamber. A sensing element, a bellows 10 with a spring 11, is installed in the control chamber. The bellows, with its fixed base, is rigidly connected to the upper cover 12 of the housing, and the movable base is connected to the regulating body, the spool 13, having a through hole 14, with a diameter equal to the diameter of the through opening of the body. The regulatory body ends inside the bellows with a stopper 15. The upper case cover is provided with a screw 16 for adjusting the spring force. The bottom cover 17 of the housing is equipped with a screw for adjusting the initial position of the passage opening of the regulatory body.

The proposed solution makes it possible to more reliably regulate (stabilize) a given water pressure at the entrance of the apartment, providing the required throughput. The problem of universal application of a regulator with a wide range of regulation is also solved.

To use the regulator in any apartment, its calculation is based on the minimum overpressure at which it becomes necessary to regulate it. The initial data for the calculation are: throughput, minimum and maximum pressure before the regulator, and the required pressure after the regulator.

The diameter of the through hole is calculated based on the minimum guaranteed head, because the largest cross-sectional area of the through hole is required in this case. In apartments, at the entrances of which the minimum pressure is higher than the calculated one, the initial living section of the passage hole is adjusted with screw 18.

With the passage opening fully open, the bellows force is zero, and the spring force is the required pressure behind the regulator.

After setting the initial value of opening the passage opening for this apartment, it is necessary, using the tuning screw 16, to restore the zero force of the bellows and the required force of the spring. After setting, the device will automatically adjust (stabilize) the required pressure.

The regulator operates as follows.

Water flowing through the passage hole, first through the hole 8 enters the control chamber, and then through the hole 9-into the control chamber. When the water pressure to the regulator is equal to the minimum guaranteed pressure, the governing and regulatory bodies retain their original positions, and, when water is taken, the required pressure is provided behind the regulator.

As the water pressure increases to the regulator, dynamic equilibrium is violated — the force of the water pressure behind the regulator exceeds the spring force, as a result of which the bellows contracts, the regulator rises, and the live section of the passage hole decreases until the balance of the water pressure force behind the regulator and the counter bellows force with spring.

When the pressure decreases to the regulator, the opposite effect occurs.

Thus, the set pressure remains behind the regulator.

When water consumption ceases, the regulator rises and completely closes the passage opening.

The regulator is very sensitive and responds quickly to pressure changes. If the consumer slightly opens the water-folding fittings, the pressure behind the regulator drops and it starts to work normally.

The proposed device can work not only as a regulator, but also as a shut-off valve. To do this, just screw 18 to raise the regulator to the stop.

The work of the prototypes installed in the cold water supply system of the hostel of the state district power station of Hrazdan confirmed the high reliability of the regulator. Saving cold water is 40%.

Information sources

1. The author's certificate of the USSR 582500

2. The author's certificate of the USSR 237468

3. The author's certificate of the USSR 21072

Claims (1)

A water pressure regulator comprising a housing having an inlet and outlet chambers connected by a passage hole, a regulating body having the possibility of reciprocating movement in a direction perpendicular to the axis of the passage hole of the housing, and provided with a passage hole, the axis and diameter of which coincide with the axis and diameter of the passage openings of the housing, a control chamber in communication with the output chamber of the housing, a sensing element located in the control chamber and associated with the regulatory body, and cameras control, communicating with the output chamber of the housing, and the end face of the regulatory body goes into the regulation chamber, characterized in that the input and output chambers and the through hole of the housing are made in the saddle, the saddle separates the control and regulation chambers and is provided with a central hole for the regulatory body, an eccentric hole between an output chamber and a control chamber and an eccentric opening between the control and regulation cameras.