EP4377184A1 - Wasserversorgungssystem für ein schienenfahrzeug - Google Patents
Wasserversorgungssystem für ein schienenfahrzeugInfo
- Publication number
- EP4377184A1 EP4377184A1 EP22769989.9A EP22769989A EP4377184A1 EP 4377184 A1 EP4377184 A1 EP 4377184A1 EP 22769989 A EP22769989 A EP 22769989A EP 4377184 A1 EP4377184 A1 EP 4377184A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- line
- supply system
- rail vehicle
- water supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D35/00—Sanitation
Definitions
- the invention relates to a water supply system for a rail vehicle, in particular for a
- Passenger rail vehicles in particular those for long-distance traffic, are equipped with a water supply, by means of which drinking water is offered to the passengers.
- wet cells are typically provided at the ends of the car, in which, among other things, water extraction points in the form of water taps are arranged.
- Modern vehicles have both a cold and a hot water supply.
- couchette or sleeping cars there is often a wet cell with corresponding water tapping points per compartment, and sometimes showers and toilets, so that the number of water tapping points per carriage is significantly higher than in purely seated carriages.
- it is often required to be able to completely empty the water lines and water tanks in order to be able to park a vehicle longer even if there is a risk of frost.
- a pressure reducing device (nozzle) is arranged between the respective connection points on the main line. At its outlet, this pressure-reducing device reduces the water pressure in the main line to a minimum, but this creates a pressure difference between the two connection points to the extraction lines, so that when water flows in the main line, there is a forced flow in the extraction lines.
- these pressure reducing devices are designed in such a way that they do not allow the line to be completely emptied . Since this is not generally accepted by the operators of rail vehicles, a plurality of drain valves are to be provided, which are to be arranged in particular at and between the extraction points. With an increasing number of drain valves, however, the manufacturing costs of the water supply system also increase and the probability of failure increases. Presentation of the invention
- the invention is therefore based on the object of specifying a water supply system for a passenger rail vehicle in which the number of drain valves for complete draining of all water-carrying lines is minimized.
- a water supply system for a passenger rail vehicle which comprises at least one water extraction point and a ring line, the ring line being formed from an inlet and a return line, and one of the lines having two branch lines to the at least one water extraction point lead, wherein a pressure reduction is inserted between the junction points of the branch lines in the relevant line, and wherein the pressure reduction has a cross-sectional reduction over the flow path of the water in it, wherein in the installation position of the pressure reduction the lowest points of the flow path in the relevant line and in of pressure reduction are in a straight line
- the advantage can be achieved that a complete drainage of water from the water supply system under the influence of gravity is possible because of the special design of the pressure reductions no areas in the Pipes are present in which water can remain.
- the water supply system comprises a ring main, which is divided into a feed and a return line.
- the ring main can run through the entire length of the rail vehicle, in any case it runs through all areas in which water extraction points are provided.
- the water extraction points are connected to the ring main in such a way that they are supplied in parallel by two branch lines, which in turn emanate from the ring main and are connected to one another at the water extraction point.
- the stub lines start from the supply line, but a connection to the return line is also possible.
- the branch lines are connected to the ring main (i .e . either the supply or return line) at junction points (T-pieces), with a pressure reduction in which this line is inserted between the junction points.
- the pressure reduction causes a pressure drop at its outlet, so that the two branch lines are each subjected to different water pressures.
- the consequence of this pressure difference is that the stub lines are traversed even when the water extraction point is closed, so that the water in them does not stagnate.
- a flow is to be maintained in the ring line during the operation of the water supply system, which can be done by means of a pump inserted into the ring line.
- a water tank receives the rail car's water supply and its contents are continuously pumped through the ring main.
- a hori zontal arrangement of the supply and is according to the invention Provide return lines and arrange a drain valve on each of the front ends of the lower-lying line.
- both of the lines mentioned cannot be arranged at the same height, so that either the supply or the return line is arranged lower.
- the drainage valves must therefore be arranged on the lower-lying line in such a way that complete water drainage is possible.
- the arrangement at the ends of the lines, which typically run through the entire rail vehicle and the drain valves are thus provided in the vicinity of the end faces of the rail vehicle, is particularly advantageous.
- the water supply is emptied into the open air or into a line connected to the vehicle and can be carried out in any position of the rail vehicle, i. H . always complete, even on inclines and in inclined positions.
- the ring main must be arranged lower down, for example in a side wall below the height of the water extraction points.
- the water supply system can be used for both cold and hot water, which has the further advantage of being able to draw hot water at any time at the tapping points, since the water in the branch lines does not cool down due to the continuous flow even if it is not used for a long time.
- the invention provides to insert a pressure reduction, which under a free drainage of the water Gravity Allowed. For this it is necessary that there are no steps or edges in the ring line and thus also in the pressure reduction, not even in the case of conventional pressure reductions used in building installations by narrowing the flow path on all sides. Even a severely rounded constriction forms a barrier within the ring main and prevents complete drainage.
- a pressure reduction is provided in which, in the installed position, the lowest points of the flow path in the relevant line and in the pressure reduction lie on a straight line.
- a preferred embodiment of the invention provides for the flow path for the water in the pressure reduction to be designed in such a way that it has the shape of two oblique truncated cone volumes which are connected in series in opposite directions and unite at their smaller diameters.
- the oblique truncated cone volumes are to be dimensioned in such a way that a continuous straight line is formed at one position on their lateral surfaces.
- the pressure reducer can be inserted into a line and provided that the pressure reducer is rotated along its longitudinal axis so that this straight line lies at the lowest point of the flow path, the pressure reducer will fit evenly into the line. This shows the installation position of the pressure reduction.
- a pressure reduction according to the invention can be constructed in other ways, for example as a tube with a cylindrical flow path and a mechanical disturbance in this flow path.
- This disruption can be realized, for example, by a protrusion protruding into the flow path.
- This shape causes a locally turbulent flow, which causes a drop in pressure. In this way, the advantage can be achieved of being able to ensure a straight connection of the pressure reduction to the ring line.
- Fig. 2 Branch to a water extraction point.
- Fig. l shows a water supply system by way of example and diagrammatically. It's a water supply system
- a rail vehicle which includes a water tank 10, wherein the water by means of a pump
- the ring main consists of a supply line 3 and a return line 4 which are connected to one another at the furthest point of the water supply system 1 .
- a continuous flow of water is maintained through the ring line, regardless of the withdrawal.
- a water extraction point 2 is shown as an example, which can typically be designed as a water tap or as a shower. To simplify the illustration, FIG. l only one loop shown , see concrete systems usually two ring lines, for cold and hot water, in front of .
- the water extraction point 2 is supplied by a first branch line 5 and a second branch line 6 , both of which originate from the feed line 3 of the ring main.
- the first branch line 5 is connected to the feed line 3 via a first junction point 7
- the second branch line 6 is connected to the feed line 3 via a second junction point 8 .
- two drain valves 12 are arranged on the inlet line 3 through which the water in the pipelines can flow out.
- a drain valve 12 is arranged at each end of the feed line 3 so that complete draining of the pipelines is ensured even when the rail vehicle is in an inclined position.
- the inlet line 3 is arranged below the return line 4 and the branch lines 5 , 6 , so that the water in these pipelines can also flow out via the inlet line 3 and the drain valves 12 without leaving any residue.
- the pressure reduction 9 represents a barrier for the water flowing off, particularly when the rail vehicle is in an inclined position or in applications in which several water extraction points 2 are provided.
- a pressure reduction 9 according to the invention as shown in detail in FIG. 3 shown, leaves effluent
- Water can flow completely through the inlet line 3 without any obstacles.
- Fig. 2 shows, by way of example and schematically, a branch to a water extraction point.
- the branch to a water extraction point 2 is shown, which includes both a mains water supply and a hot water supply.
- two ring lines are provided, each of which consists of an inlet line 3 and a return line 4 .
- Branch lines 5 , 6 are connected to the inlet line 3 via junctions 7 , 8 and lead to a water extraction point 2 ; a water tap is shown in FIG. 2 not shown.
- the supply line 3 is arranged above the return line 4 , the drain valves 12 are therefore to be arranged on the return line 4 .
- Fig. 3 shows a pressure reduction by way of example and schematically. It is a section through a loop, e .g . B. an inlet line 3 at the branch point to a water extraction point 2 and represented by a pressure reduction 9 .
- the branch lines 5 , 6 are connected to the inlet line 3 via junction points 7 , 8 and a pressure reduction 9 is arranged between the junction points 7 , 8 .
- the flow path in the pressure reduction 9 can be seen in the form of two oblique truncated cone volumes. It can also be seen that there is a continuous straight line at the lowest position of the lateral surfaces of the oblique truncated volumes. It is essential that the Pressure reduction 9 is inserted in this position (installation position) in the ring line. If it were inserted twisted, the truncated cone volumes would form a barrier to water draining away and water would stagnate in the ring main.
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipeline Systems (AREA)
- Multiple-Way Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50701/2021A AT524848B1 (de) | 2021-09-02 | 2021-09-02 | Wasserversorgungssystem für ein Schienenfahrzeug |
| PCT/EP2022/074178 WO2023031259A1 (de) | 2021-09-02 | 2022-08-31 | Wasserversorgungssystem für ein schienenfahrzeug |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4377184A1 true EP4377184A1 (de) | 2024-06-05 |
| EP4377184B1 EP4377184B1 (de) | 2025-03-05 |
| EP4377184C0 EP4377184C0 (de) | 2025-03-05 |
Family
ID=83322480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22769989.9A Active EP4377184B1 (de) | 2021-09-02 | 2022-08-31 | Wasserversorgungssystem für ein schienenfahrzeug |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4377184B1 (de) |
| AT (1) | AT524848B1 (de) |
| ES (1) | ES3032340T3 (de) |
| WO (1) | WO2023031259A1 (de) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011088172B4 (de) * | 2011-12-09 | 2014-07-31 | Siemens Aktiengesellschaft | Frischwasserversorgungsanlage für ein Schienenfahrzeug |
| DE102012211168A1 (de) * | 2012-06-28 | 2014-01-02 | Siemens Aktiengesellschaft | Transportmittel mit Wasserbereitstellungseinrichtung |
| DE202015002424U1 (de) * | 2015-03-31 | 2015-04-30 | Siemens Aktiengesellschaft | Frostentleerung eines Tanks eines Schienenfahrzeugs |
| DE102016217979B4 (de) * | 2016-09-20 | 2019-12-12 | Siemens Mobility GmbH | Fahrzeugseitige Entleerungseinrichtung für Füllleitungen |
| RU203160U1 (ru) * | 2020-11-30 | 2021-03-24 | Общество с ограниченной ответственностью "ЛТС-Сервис" | Устройство нагрева и охлаждения питьевой воды в железнодорожном вагоне |
-
2021
- 2021-09-02 AT ATA50701/2021A patent/AT524848B1/de active
-
2022
- 2022-08-31 WO PCT/EP2022/074178 patent/WO2023031259A1/de not_active Ceased
- 2022-08-31 EP EP22769989.9A patent/EP4377184B1/de active Active
- 2022-08-31 ES ES22769989T patent/ES3032340T3/es active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP4377184B1 (de) | 2025-03-05 |
| EP4377184C0 (de) | 2025-03-05 |
| AT524848B1 (de) | 2022-10-15 |
| ES3032340T3 (en) | 2025-07-17 |
| AT524848A4 (de) | 2022-10-15 |
| WO2023031259A1 (de) | 2023-03-09 |
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