RU13962U1 - AUTOMATIC DEVICE FOR WATER OUTLET FROM HEATING AND WATER PIPE SYSTEMS WITH FREEZING HAZARD - Google Patents

Abstract

An automatic device for discharging water from heating and water supply systems in case of danger of freezing, containing a standard valve body, the inlet of which is connected to a pipeline filled with water, and the outlet - to a drain pipe, two steel springs, an annular lock spring made of material with a thermomechanical shape memory, a locking element, characterized in that the device is additionally equipped with a fixed housing placed in a chamber through which fluid flows in the system, movable support and movable ayboy, wherein the stationary housing and the movable support connected to a ring spring and their relative position is dependent on the water temperature in the system, the first steel spring interposed between the movable support and the movable disc, a second steel spring washer placed between the movable and stationary housing.

Description

Automatic device for discharging water from heating and water systems in case of danger of freezing

The proposed utility model relates to the field of water supply through pipelines for heating and water supply of premises, in particular, to heating and water supply systems for railway passenger cars.

In the general case, if, for any reason, the temperature in the heating or water supply system drops to critical (the freezing temperature of water), then the water in the system may freeze, which will lead to spoilage (rupture) of pipelines and associated apparatuses and devices.

To eliminate this phenomenon, it is necessary to drain the water from the system at a water temperature close to its freezing temperature.

Known automatic release of water to protect the pipeline from freezing, containing a housing located inside the pipeline with holes, a valve and a drain pipe, while the upper end of the drain pipe is closed by a valve with a rubber seal. When the inner surface of the pipeline is iced up, the holes in the body are closed with ice, intense ice formation occurs, the valve begins to open gradually, and water 1 begins to discharge through the upper end of the drain pipe.

The disadvantages of this device:

1. At a low ambient temperature and with a small flow of water in the drain pipe, freezing of water in this pipe is possible, which will lead to an accident;

E 03 in 7/10

The closest to the utility model in terms of technical nature and the achieved effect is an automatic, electrically independent device for protection against freezing of heating and other water supply systems 2. For implementation, the device installed on the pipeline, for draining the liquid from the system, contains a standard valve body, the input of which is connected to the system pipeline heating / water supply, and the outlet is with a drain pipe, a movable housing, which through an annular lock spring made of material with

thermomechanical shape memory is connected to the fixed support, the first steel spring, which is placed between the movable housing and the locking element, the second steel spring, which is placed between the fixed support and the locking element. If the room temperature drops to a temperature close to the freezing temperature of water in the pipeline, the elastic modulus of the annular spring is significantly reduced, as a result of which it is expanded and the movable housing moves under the action of the first spring. The released locking element, under the action of the second spring, opens the drain hole of the valve.

A disadvantage of the known device is its operation at ambient temperature, regardless of the temperature of the water in the pipeline, which when the device is locally cooled, for example, when a stream of cold air from an open window or door, leads to a false operation of the device.

The purpose of the proposed utility model is to prevent an accident in the heating / water supply system when the water in the pipeline reaches a temperature close to its freezing temperature.This goal is achieved by the fact that at a water temperature in the pipeline close to its freezing temperature, a valve is opened in a jump manner to drain water from the system.

An automatic device for discharging water from heating and plumbing systems in case of danger of freezing is proposed, which is realized using a valve with a fixed body and a movable support using a thermosensitive element based on a material with thermomechanical memory of form 3.

In FIG. 1 shows an automatic device for discharging water from heating and plumbing systems in case of danger of freezing. The device comprises a housing 1 of a standard valve, the inlet of which is connected to the pipeline 2 of the heating / water system, and the outlet with a drain pipe 3, a chamber 4 through which water flows in the system, a stationary housing 5 placed in this chamber, which through an annular lock spring 6, made of material with a thermomechanical shape memory, connected to the movable support 7, the first steel spring 8, which is placed between the movable support 7 and the movable washer 9, the second steel spring 10, which is placed between the fixed orpusom movable disc 5 and 9, which is in turn connected with the locking member 11.

The operation of the device proceeds as follows. The fixed body 5, made of a material with a high coefficient of thermal conductivity (for example, copper, aluminum), is placed in a chamber 4 through which water flows in the heating / plumbing system. The housing 5, and, consequently, the annular spring 6 have a temperature almost equal to the temperature of the water in the system. At normal water temperature (for example, 20 ° C), the stationary body 5 is rigidly connected to the movable support 7 by means of an annular spring 6. Under the action of the spring 8, which transfers force to the movable washer 9, the locking element 11 is in the lower position and prevents the leakage of liquid from the pipeline 2. If the water temperature drops to a temperature close to its freezing (for example, 2 ° C), then the deformation resistance of the spring 6 decreases due to the plasticity effect of the martensitic transformation, as a result of which it is expanded and the movable support 7 under the action of the spring 8 moves up. The force transmitted by the spring 8 to the washer 9 becomes zero, and the locking element 11 rises up under the action of the spring 10, as a result of which the drain hole of the housing 1 opens and water drains from the system, which will prevent rupture of the pipeline and associated devices and apparatuses .

LIQUID from the system, to re-fill the system with water, the valve 12 should be closed, fill the system with water and when the water temperature is normal, push the movable support 7 to its original position and then open the valve 12.

1.SU, 1120076, E 03 V 7/10, 1983

2.RU 11806 U1 6 E 03 V 7/10

3. Titanium nickelide and other alloys with a memory effect / I.I. Kornilov, O.K. Belousov. B.V. KachurM. The science. 1977.180s

Claims (1)

An automatic device for discharging water from heating and water supply systems in case of danger of freezing, containing a standard valve body, the inlet of which is connected to a pipeline filled with water, and the outlet - to a drain pipe, two steel springs, an annular lock spring made of material with a thermomechanical shape memory, a locking element, characterized in that the device is additionally equipped with a fixed housing placed in a chamber through which fluid flows in the system, a movable support and a movable ayboy, wherein the stationary housing and the movable support connected to a ring spring and their relative position is dependent on the water temperature in the system, the first steel spring interposed between the movable support and the movable disc, a second steel spring washer placed between the movable and stationary housing.