EP2660397B1 - System for feeding water for fire-extinguisher - Google Patents

Description

The invention relates to a system for feeding water into a container for supplying an extinguishing water consumer from a drinking water pipeline via a free outlet.

The plant is everywhere applicable where a water, especially a fire water consumer is present, the water in a container such as an intermediate container is available and the intermediate container with water from the public water supply or the domestic water supply of a building, especially from a Drinking water pipeline to be fed and refilled.

So that, if necessary, sufficient water can be fed into the container, all lines are usually shut off to supply additional consumers of water from the domestic water supply or the public water supply network with elaborate fittings.

In order to prevent stagnant water, connection lines to the make-up valve must be flushed regularly in accordance with the generally accepted rules of technology. Usually, self-acting purging devices are installed for this purpose, which ensure the required regular water exchange in the connection lines.

Containers such as reservoirs or lines for extinguishing water, for example for extinguishing nozzles of extinguishing systems in a building must have sufficient extinguishing agents such as extinguishing water available. For a container such as an extinguishant reservoir for a building, this presupposes that the extinguishing agent container is always filled with extinguishing agent and, in the event of fire, is fed with further extinguishing agent, such as water. If the extinguishing water is derived from a domestic water supply or a public water supply network, no water from tap water or containers with stagnant water in the public water network or the domestic water network, especially in drinking water pipelines must flow back so that the quality of the drinking water is not affected.

The same applies to the filling and refilling of containers for eg drinking water in buildings.

In order to achieve a Wassernachspeisung in an intermediate container from the public water supply, different solutions are known.

DE600 20 519T2 describes a parallel-fed integrated non-stagnant water supply network for domestic water and sprinkler systems, in which a storage tank is arranged, the stagnation of water being prevented by supplying both the individual consumers of the house and the sprinkler system directly from the drinking water line, including are provided on the drinking water pipe multiport connections, so that a backflow of the domestic water in the drinking water pipe is not possible.

DE27 47 941A1 describes a drinking water pipe from which a hot water circuit is diverted and prevent a piston separation pipe and pressure control valve that hot water flows back from the hot water circuit in the drinking water pipe, with a three-way valve is arranged. This electromagnetic three-way valve partially connects the drinking water line with a pressure and discharge line. A reservoir for extinguishing water was not described in this document.

DE10 2006 028 151A1 describes a method for drinking, operating and / or extinguishing water supply and drinking, operating and / or extinguishing water pipes with a reservoir containing a baffle plate. The solution provides that drinking water is introduced into a storage tank and removed as needed via a water pressure line and that a pressure drop in the pipe network is inevitably generated by opening an actuator. The document specifies a possibility to meet the respective requirements with regard to the operation of a domestic water supply.

DE100 35 889A1 describes a device for fresh water supply, in which a container for fresh water and a container for service water are arranged, each container having a float and a valve and a three-way valve is arranged in the inlet of the process water tank in front of a conveyor. The proposed solution meets the legal requirements, however, requires a considerable costly equipment expenditure. Furthermore, this device allows no priority filling of the container in case of need by throttling or blocking the water supply to other consumers.

DE39 11 747C2 describes a device for regulating the water supply from a reservoir of a fire extinguishing system in which the level of the water level in the container is determined by means of floats, wherein a rod between the float and valve is arranged, which allows a uniform control of the valve and thus the water outlet.

The publication US Pat. No. 5,975,133 describes an emergency water tank in a water supply system, but which is in direct fluidic connection with the fresh water supply and from which all water consumers are supplied.

GB2 280 369A discloses a sprinkler system with a system for supplying a fire water consumer. This system for supplying an extinguishing water consumer, comprises a feed tank and a water supply line, which is provided exclusively for supplying water to the sprinkler system and has a float-controlled valve for filling the feed tank.

The document DE 10 2009 056 452 A discloses an extinguishing water system with a reservoir (water reservoir), which is filled via a free outlet from a drinking water pipe.

A disadvantage of the existing state of the art is that the existing systems for supplying a consumer such as an extinguishing water consumer from a drinking water pipeline of a building or the public water supply require considerable effort to meet the normative requirements. This concerns the technically complex barrier and the devices for flushing. Furthermore, the systems are not always suitable, nachzuspeisen from the pipeline network of the building or from the public pipeline network for water supply demand-controlled water in sufficient quantity in the container. In particular, these systems and devices do not allow priority or exclusive supply of fire water consumers through a container which is filled by blocking or throttling the water supply to all other consumers on the pipeline or the pipe network primarily via a valve which simultaneously performs this shut-off or throttling.

It is therefore an object of the invention to develop a system with which the operator can meet the requirements for the separation of drinking water public water supply, or a drinking water pipe, or a network of domestic water supply of stagnant water with little effort, without purging and / or Rinses for pipelines and / or fittings that come into contact with stagnant water, are required, and that, if necessary, the water is available primarily or exclusively for an extinguishing water consumer, which is provided from the feed into a container.

This object is achieved by a system for feeding water into a container according to the features of the first claim. The system can also be designed as a device.

Subclaims give advantageous embodiments of the invention again.

The solution according to the invention provides for a cost-effective and reliable system for the demand-controlled supply of water into a container for supplying an extinguishing water consumer from a drinking water pipeline via a free outlet. This container serves as a buffer and supplies a fire water consumer. The container does not have an immediate fluid connection to the drinking water pipeline, i. no direct connection, so that no water from the container, which is stagnant after a long time, contaminated water, can not get into the drinking water pipeline either by sucking back or by opening valves. The only connection of the container to the supplying pipeline network or drinking water pipeline is the air gap, the free fall distance of the free outlet for filling the container.

In preferred embodiments, the term domestic water is also used for drinking water. Household water consumers are thus drinking water consumers, if the pipeline network for domestic water leads drinking water. The drinking water pipeline is part of the drinking water pipeline network, which may also be pronounced as a pipeline network for domestic water. The term drinking water pipeline can be used as a synonym for the pipeline network for domestic water.

As extinguishing water consumers here a sprinkler system, a Sprühwasserlöschanlage, a wall hydrant system, a water mist system and other extinguishing devices understood.

For this purpose, a valve, preferably a multi-way valve is arranged in the drinking water pipeline, preferably the domestic water supply, which completely or partially releases the path of the water via a free outlet into the container in the one switching position or in a circuit area and thereby the flow of water in the Drinking water pipeline in the direction of domestic water consumers in the flow direction after the valve blocks or partially blocks and locks in the other switching position or the other switch position range the way of water in the container or throttles the inflowing amount of water and thereby the way of the water in the drinking water pipeline towards domestic water consumers completely or partially releases. The feed into the container takes place depending on the level of the water level in the container.

In a particularly preferred embodiment, the container has a float for determining the level of the water level in the container, wherein the multi-way valve and the float are designed so that the float directly actuates the multi-way valve, and thus the switching position of the multi-way valve from the level of the water level in the container depends.

In an advantageous embodiment, the valve is placed directly after the connection to the public water supply in the piping network as the first consumer, so that the container and the fire water consumer in case of need, the first and only water consumer.

For on-demand feeding of water into the container, a suitable level measuring device, e.g. a sensor, float switch or float arranged, which determines the level of the liquid in the container and the valve, preferably the multi-way valve in a suitable manner. The valve is then adjusted as long and to the extent required by the level in the tank. This ensures that the intermediate container always has a predetermined water level.

The valve control can be mechanical, electrical, pneumatic and hydraulic, wherein the valve can be controlled directly or indirectly.

Under free outlet is defined as a free fall distance with a required safety distance of the water outlet from the water-supplying pipes or fittings to the surface of the water level in the container. In addition, we also called this short run.

The free outlet may be located between the outlet of the valve and the water surface. However, a pipe, a gutter or another suitable means for discharging the water can also be arranged between the valve and the free outlet.

The reservoir for the extinguishing water can be made of metal, plastic or other suitable material and is designed so that it contains a fire-extinguishing volume, which is sufficient for a part of the extinguishing process. It may be a closed container in a frost protected location. If no frost-protected place is available, the container should be insulated or heated accordingly. At the lowest point of the container, a drain valve for discharging the extinguishing agent is arranged. At the highest point, as far as it is a closed container, a device for ventilation and be provided.

It is advantageous to provide a multi-way valve as a valve in the drinking water pipeline. Particularly suitable is a 3/2-way valve with overlap, so that a continuous control with intermediate positions is possible. As a result, switch positions or switch position ranges can be set so that a completely blocked or partially throttled flow of water into the drinking water pipeline from the public water supply is possible, with simultaneous exclusive feed or partially throttled feeding of the water into the container. But it is also possible to block this feed completely or only partially.

It is also advantageous, however, to use two shut-off valves as a valve. These may be, for example, butterfly valves, which are connected in opposition, so that they can be opened or closed continuously.

To measure or determine the level of water level in the tank, a float is suitable.

This float can actuate the valve directly. Another possibility is to transmit a signal electronically to the valve control.

Another way to actuate the valve by means of a float, consists in a mechanical transmission, for example by means of linkage. Between the linkage and the valve, a transmission, such as a reduction gear can be arranged. Conceivable, however, are other suitable gear or linkage.

Another way to measure the level of the water level in the container can be done by means of pilot valve, in which case a hydraulically acting valve is present, which adjusts the above-mentioned switching positions or switching ranges.

In this context of the design of the valve, it is possible to form the valve as a motor slide or as a solenoid valve. Also conceivable are pneumatically actuated butterfly valves with pneumatic actuators or self-medium-controlled valves, which are controlled by pilot valves.

Another object of the invention is a device for demand-controlled water supply for extinguishing water consumers with feeding water into a container for supplying a fire water consumer from a drinking water pipeline via a free outlet, wherein the container has no immediate fluid connection to the drinking water pipeline. The device is characterized in that a multi-way valve is arranged in the drinking water pipeline, which completely or partially releases the path of the water into the container in the one switching position or in a switching position range and thereby the flow of water in the drinking water pipeline in the direction of domestic water consumers (12). locks or partially blocks and locks in the other switching position or the other switch position range the way of water in the container or throttles the inflowing amount of water and thereby completely or partially releases the path of the water in the drinking water pipeline towards domestic water consumers. The container has a float for determining the level of the water level. In a particularly preferred embodiment, the multi-way valve and the float are designed so that the float directly actuates the multi-way valve, and thus the switching position of the multi-way valve depends on the level of the water level in the container.

In another embodiment, the multi-way valve is a 3/2-way valve with overlap and between float and multi-way valve, a linkage and a transmission are arranged, the float via the linkage and the transmission directly operated the 3/2-way valve ,

The solution according to the invention has the advantage that with little technical effort, reliable and inexpensive water from the domestic water supply, if necessary and in required quantities via a container for supplying a fire water consumer is provided without water loss caused by forced flushing.

The proposed solution also makes it impossible for stagnant water to pass from the extinguishing agent container into the public water supply or into the drinking water pipeline of the building. Furthermore, the system ensures that when needed first or even exclusively the container is fed with the water, and that only when reached the predetermined level of water level in the container, the water flow in the drinking water pipeline towards home water consumers is fully released. This is necessary in particular for extinguishing water consumers.

In addition, no external energy is needed for the mechanical control of the valve. This is especially important in the event that the extinguishing water consumer must be supplied with water even in the event of a power failure.

Figur 1:

Schematische Darstellung einer Anlage mit einem Mehrwegventil und einem Zwischenbehälter.

Figur 2:

Schaltstellung des Mehrwegventils.

Figur 3:

Schematische Darstellung einer Anlage mit einem Mehrwegeventil, einem Zwischenbehälter und einem Sensor im Behälter.

Figur 4:

Schematische Darstellung einer Anlage mit einem Mehrwegeventil, einem Zwischenbehälter und einem Schwimmer mit elektronisch betätigtem Ventil.

In the following, the invention will be explained in more detail in four figures and one embodiment. The figures show:

FIG. 1:

Schematic representation of a system with a multi-way valve and an intermediate container.

FIG. 2:

Switch position of the multi-way valve.

FIG. 3:

Schematic representation of a system with a multi-way valve, an intermediate container and a sensor in the container.

FIG. 4:

Schematic representation of a system with a multi-way valve, an intermediate container and a float with electronically actuated valve.

The FIG. 1 shows the system for supplying an extinguishing water consumer 7 from a drinking water pipeline 6 for a domestic water supply between the inlet of the public Water supply 3 and the home water consumers 12 of the building or house, in which line 6, the multi-way valve 1 is arranged. In the illustrated system variant, the multi-way valve 1 is a 3/2-way valve. The multi-way valve 1 is controlled mechanically via the gear 10, a reduction gear. About the pipe 15 and the free outlet 2, the water passes at a corresponding valve position in the container 5, the intermediate container for the extinguishing water consumer 7. The container volume is dimensioned according to the water requirement.

Since the container 5 is filled only via the free outlet 2 and has no pipe connection to the drinking water pipe 6, the container 5 has no direct fluid connection with the drinking water pipe 6. Thus, a secure separation between the fresh water, usually drinking water, in the drinking water pipe 6 and the service water in the container 5 is guaranteed. The water in the container 5 is after filling by prolonged standing in this container to stagnant water, to process water which is contaminated.

The level 11 of the water level in the container 5 is controlled by a sensor which is a float 8 with the linkage 9 to the transmission 10. The float 8 actuates the multi-way valve (1) directly to the linkage 9 and the transmission 10, so that the switching position of the multi-way valve 1 from level 11 of the water level in the container 5 depends.

Thus, the measured level height can be mechanically converted into actuation paths for controlling the multi-way valve and the required switching positions or switching position ranges of the multi-way valve 1 can be realized.

When lowering the water level in the container 5 below a certain level thereby a switching position or in a switching position range of the multi-way valve 1 is achieved, which is the path of the water from the drinking water pipe 6 via the pipe 15 to the free outlet and the free outlet 2 in the container. 5 completely or partially releases and thereby blocks or partially blocks the flow of water in the drinking water pipeline 6 of the domestic water supply in the direction of the domestic water consumers.
This happens until the float 8 has reached a predetermined height and the multi-way valve 1 blocks the path of the water to the outlet 2 and no more water flows into the container 5. In this switching position, the multi-way valve 1 is the path of the water between the inlet from the public water supply 3 to the house water consumers 12 in the pipeline network 6 completely free. As long as there is too little extinguishing water 4 in the container 5, the multi-way valve 1 closes the way of the water to the domestic water consumer 12 completely or partially, so that the water from the inlet of the public water supply 3 priority or only partially reach the intermediate container for the fire water 4 can. Characterized in that whenever the extinguishing water level 11 falls below a certain level, the multi-way valve 1 via the float 8, the linkage 9 and the transmission 10 is controlled so that the water through the pipe 15 and the outlet 2 into the container. 5 flows according to demand, it is ensured that the container 5 is supplied with sufficient water before it reaches the domestic water consumers 12 on the drinking water pipe 6 of the house.

In the switching position of the multi-way valve 1, in which it completely closes the path of the water to the domestic water consumer 12, only the container 5 is supplied with the water from the drinking water pipeline 6. This is always ensured in case of fire that in the container 5 always sufficient fire extinguishing water 4 is available for fire fighting. The connection for the extinguishing water consumer 7 is arranged in the container 5 below.

The extinguishing water consumer 7 is not shown. Fire water consumers are e.g. Sprinkler systems, water spray extinguishing systems, wall hydrant systems, water mist systems and others, and a connection valve that supplies a mobile extinguishing device and other devices for extinguishing.

The FIG. 2 shows the possible switching positions of the multi-way valve 1, designed as a 3/2-way valve with overlap and intermediate positions, which either completely or partially releases the path of the water from the inlet 3 of the public water supply to the outlet 2 in the container 5 or in the switched position Path of the water from the inlet 3 of the public water supply towards the domestic water consumer 12 wholly or partially releases.

The FIG. 3 shows the schematic representation of the system with a multi-way valve 1 and a sensor 13 in the container 5, which is arranged as an electronic sensor over the height of the container 5 for transmitting the level 11 of the water level. The sensory determined level 11 of the water level of the fire-extinguishing water 4 in the container 5 is transmitted electronically to the valve control 14 of the multi-way valve. Switching the multiway valve and the flow of water for demand-controlled feed into the container 5 in an analogous manner as that for FIG. 1 has been described.

The FIG. 4 shows an embodiment of a schematic representation of the system with a multi-way valve in which a float 8 is disposed on the extinguishing water 4 of the container 5 and electronically transmits the level 11 of the water level to the valve control 14, so that as in the manner already described above a Control of the multi-way valve 1 can be carried out according to the level 11 of the water level.
The free outlet 2 is located directly and without a pipe or gutter between multi-way valve 1 and the level 11 of the water level, so that the water falls directly from the multi-way valve 1 into the container 5.

List of reference numbers used

1

Multi-way valve

2

Free outlet in the container 5

3

public water supply

4

fire water

5

container

6

Drinking water pipeline

7

Fire water consumers

8th

swimmer

9

Linkage of the float

10

Transmission between 1 and 9

11

Level of water level

12

Domestic water consumers

13

sensor

14

valve control

15

Pipeline to free outlet 2

Claims (7)

1. System for supplying of a fire extinguisher consumer, comprising a tank (5) and a potable water pipeline (6) with a free outlet (2), wherein the supplying of water to the tank (5) occurs from the potable water pipeline (6) across the free outlet (2), wherein the tank (5) has no direct fluidic connection to the potable water pipeline (6), characterized in that
   a multiport valve (1) is arranged in the potable water pipeline (6), which in one switching position or in one switching position range frees up entirely or partly the path of the water into the tank (5) and thereby blocks or partly blocks the flow of water into the potable water pipeline (6) in the direction of household water consumers (12) and in the other switching position or the other switching position range it blocks the path of the water into the tank (5) or throttles the incoming water quantity and thereby frees up entirely or partially the path of the water in the potable water pipeline (6) in the direction of household water consumers (12),
   the tank (5) comprises a float (8) for determining a water level (11),
   wherein the multiport valve (1) and the float (8) are designed so that the float (8) directly activates the multiport valve (1) and thus the switching position of the multiport valve (1) depends on the water level (11) in the tank (5).
2. System according to Claim 1, characterized in that the multiport valve (1) is a 3/2-way valve with overlapping.
3. System according to Claim 1, characterized in that the multiport valve (1) is formed by two shutoff fittings which are switched opposite each other, so that they may be continuously opened and closed.
4. System according to one of Claims 1 to 3, characterized in that between float (8) and multiport valve (1) are arranged a rod system and a gearing.
5. System according to one of Claims 1 to 4, characterized in that the water level (11) is ascertained by means of a sensor or float switch.
6. System according to one of Claims 1 to 5, characterized in that the water level (11) is measured by a pilot valve and the multiport valve (1) is a hydraulically operating valve.
7. System according to one of Claims 1 to 6, characterized in that the multiport valve (1) control system can be mechanical, electrical, pneumatic or hydraulic.

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