EP3350053A1

EP3350053A1 - Liquid-storage apparatus and vehicle having a liquid-storage apparatus

Info

Publication number: EP3350053A1
Application number: EP16812918.7A
Authority: EP
Inventors: Abdessamad AIT-JEDDI; Michael Braun; Walter Lindermuth
Original assignee: Siemens AG
Current assignee: Siemens Mobility GmbH
Priority date: 2015-12-22
Filing date: 2016-12-06
Publication date: 2018-07-25
Anticipated expiration: 2036-12-06
Also published as: RU186063U1; DE102015226495A1; WO2017108391A1; CN208602488U; EP3350053B1; ES2837386T3

Abstract

The invention relates, inter alia, to a liquid-storage apparatus having a liquid tank (20). The invention makes provision for the liquid-storage apparatus to have a shared line (60) which is connected, at an interface (50), to an overflow line (40), which is connected to the liquid tank (20), and to an emptying line (70), which is connected to the liquid tank (20), and, in the case of a level of liquid which reaches, or exceeds, a predetermined maximum level of liquid in the liquid tank (20), the shared line (60) passes on liquid from the overflow line (40) to an end (61) of the shared line (60) which is remote from the interface (50) and, in the case of the liquid tank (20) being emptied, the shared line (60) passes on liquid from the emptying line (70) to the end (61) of the shared line (60) which is remote from the interface (50).

Description

description

Liquid storage device and vehicle with liquid storage device

The invention relates to liquid storage devices with a liquid container, in particular for use in vehicles such. B. rail vehicles. In rail vehicles are z. B. for sanitary facilities or for the galley fresh water systems with fresh water tanks available. Depending on the vehicle equipment, the fresh water systems are located in one, several or each wagon of a train. Depending on the design are the

Liquid container z. B. in the roof area, in the vehicle interior or in the underfloor area. In certain situations, eg. B. at risk of frost, the fresh water tank must be able to be completely emptied. So there are measures to tref ^¬ fen that simply allow such emptying.

The invention has for its object to provide a liquid ^¬ storage device, which can be realized in a space-saving and cost-effective, especially in vehicles such as rail vehicles and allows safe operation and emptying with little effort.

This object is achieved by a liquid ^¬ storage ^device with the features of claim 1. Advantageous embodiments of the liquid storage device according to the invention are specified in subclaims.

Thereafter, the invention provides that the liquid ^¬ storage device has a common line, which communicates at an interface with a connected to the liquid container overflow pipe and connected to the liquid container discharge line in communication, and the common line in the case of Liquid level, a predetermined maximum

Liquid level reached in the liquid container or exceeds forwards liquid from the overflow line to a remote from the interface line end of the Gemeinschaftslei- processing and forwards in the event of emptying of the liquid ^¬ keitsbehälters liquid from the discharge line to the remote from the interface line end of the common ^¬ shaft line. A significant advantage of the liquid storage device according to the invention is to be seen in that in this invention provided Community line both the forwarding of liquid at a high liquid ^¬ stand and the forwarding of liquid in the case of a deliberate emptying of the liquid container allows and thus in sections both the function of the Entlee ^¬ approximate line and the function of the overflow pipe is responsible. The overflow line and the discharge line itself can thus be made relatively short, so that a double or parallel laying of lines avoided and line length - can be saved - compared to a configuration with separate overflow line and separate drain line. In other words, the liquid ^{storage device} according to the invention can be realized with the saving of lines or line length and thus with minimal costs, minimal installation effort and minimum space requirement.

With respect to the arrangement of intake and overflow port, it is considered advantageous if the Entleerungslei ^¬ tung having in the bottom area of the liquid container angeord ^¬ designated suction port and the overflow pipe having an above the suction opening arranged in the liquid container and a maximum level-defining overflow opening.

In order to enable emptying of the liquid container with a minimal ^{amount of} wall space, it is considered advantageous if the drainage conduit has a suction portion extending upwardly from the suction opening to a height level higher than the overflow opening and thence down to a height level below the liquid tank, and emptying the tank automatically by gravity alone the liquid takes place when the suction ^¬ section is filled with liquid. In this Ausgestal ^¬ processing the so-called siphon effect of liquids is used: As soon as the suction portion is filled with liquid, an automatic automatic emptying of the

Liquid container solely by gravity or by the pressure conditions within the line done.

The interface is preferably below the height level of the overflow opening of the overflow pipe, more preferably below the height level of the suction port of the Ent ^¬ emptying line.

In order to allow liquid to be sucked into the suction section for emptying and, if necessary, to initiate a suction process initiated by the lifting action of the liquid at a later time, it is considered advantageous if the overflow line is interposed between the suction line Interface and the overflow opening a shut-off device, in particular valve, which allows a fluid flow in the open state towards the interface and, for example, drain liquid at too high a level and in the closed state prevents fluid flow and thereby, for example, a suction of liquid in supports the suction section or he ^¬ allows. In this embodiment, after a previously initiated suction the further emptying can be interrupted by the valve is opened and an air connection between the suction port and the overflow opening is made.

The valve may be, for example, a pinch valve or a solenoid valve. With a view to a minimum number of components, it is considered to be ^advantageous if the interface is formed by a directional control valve, in particular a 3/2-way valve (valve with three connections and two positions), with a first connection to the Community line is connected to a second connection to the drain line and a third connection to the overflow line and connects the first, second and third connection in a first position and in a second position connects the first and the second terminal and ver ^¬ the third terminal closes. In this embodiment, the directional control valve so ^¬ probably forms the interface for connecting the overflow line, drain line and common line as well as a component that can interrupt a previously started emptying process.

The obturator or the directional control valve is preferably

remotely controllable, in particular pneumatically or electrically switchable. Such a configuration makes it possible in an advantageous manner to remotely change the obturator or the directional control valve when a suction of liquid from the liquid container is started and more liquid to be sucked into the suction section.

With regard to the suction of liquid, it is considered to be ^advantageous if, in the common line, downstream of the interface, a suction device is arranged which can suck liquid into the suction section of the discharge line and fill it, whereby the subsequent automatic emptying of the discharge line Container is triggered solely by the gravity ^¬ force of the liquid. In the latter embodiment, the emptying process can be interrupted in an advantageous manner by the overflow line connected to the drainage line and an air flow from the overflow line is made possible in the drain line. Alternatively, the suction device in the discharge line - ie upstream of the interface - be arranged. The suction device is preferably formed by an ejector or a pump.

The invention also relates to a vehicle, in particular rail vehicle, which is equipped with a liquid storage device, as has been explained above. With regard to the advantages of the vehicle according to the invention, reference is made to the above statements.

The invention further relates to a method of operating a liquid storage device having a liquid container.

Respect of such proceedings is ^¬ see inventively that

- In a normal mode of operation, a common line, which communicates at an interface with a connected to the liquid ^¬ container overflow pipe and with a connected to the liquid container discharge line in connection, connected to the overflow pipe and a drainage of liquid via the Überlauflei ^¬ tion is made possible , and

- Is sucked in a drain operating mode liquid at a arranged in the bottom region of the liquid container suction port of the drain line and sucked into a suction portion extending from the suction up to a height level, which is higher than an overflow opening of the overflow pipe, and from there down a level below the liquid container ^¬ extends, and emptying of the container automatically by the gravity of the liquid through the discharge line and the common line through, as soon as is filled by the suction of the suction portion with liquid. With regard to the advantages of the method according to the invention, reference is made to the above statements in connection with the liquid storage device according to the invention.

The invention will be explained in more detail with reference to Ausführungsbeispie ^¬ len; an exemplary embodiment of an inventive rail vehicle, which is equipped with an embodiment of a liquid storage device in which a valve is arranged in an overflow line, an embodiment of a rail vehicle according to the invention, which is equipped with an embodiment of a liquid storage device in which a Overflow line, an emptying ^¬ ment line and a common line are connected by means of a directional control valve, and

Figure 3 shows an embodiment of an inventive

Rail vehicle equipped with an embodiment for a liquid storage device in which an overflow pipe is arranged downstream of a suction device.

For the sake of clarity, the same reference numbers are always used in the figures for identical or comparable components.

FIG. 1 shows a rail vehicle 10 equipped with a liquid storage device. The

Liquid storage device comprises a Flüssigkeitsbe container 20, which is preferably arranged in the roof area 11 of the rail vehicle 10. The liquid container 20 is preferably used for storing water, in particular fresh water, via one or more connecting lines 21 to consumer equipment, not shown in the figure 1, such as toilets, sinks, dishwashers, etc. can flow. For filling the liquid container 20 with a liquid ^¬ speed serve two filling lines 30 and 31, in the

Liquid container 20 are guided and allow filling of liquid along the arrow direction PI in Figure 1.

To prevent an overflow of the liquid container 20, the rail vehicle 10 is permitted with an overflow line 40 from ^¬ whose overflow opening 41 is arranged in the region of the liquid container 20, and a maximum filling level sets. If the liquid level reaches the level of the overflow opening 41 in the liquid ^¬ container 20, for example in the event of overfilling or a Überschwap ^¬ pens during braking or acceleration of the rail vehicle 10, the liquid through the overflow opening 41 and the overflow pipe 40 passes from the rail vehicle 10 from ^¬ flow.

The overflow opening 41 is connected at an interface 50 to a common line 60, which forwards liquid discharged from the liquid tank 20 from the overflow line 40 to a drain opening 62; ^¬ the drain opening 62 is disposed at a location remote from the interface 50 cable end 61 of the common line 60th The drainage opening 62 is preferably located in the region of the vehicle floor 12 of the rail vehicle 10.

A purge ^¬ line 70 is connected to the interface 50 further comprising a suction opening 71 and can also be referred to as a suction line. The presence suction opening 71 is arranged in the region of the bottom portion of the liquid ^¬ keitsbehälters 20 and enables suction of liquid from the liquid tank 20. A suction may for example be desired when the rail vehicle 10 is turned off in winter and there is a risk of frost or the liquid should be replaced.

At the suction port 71, a suction portion 72 connects to the drain line 70, which extends upwardly of the suction opening 71 of a height level that is higher than the over ^¬ overflow opening 41 of the overflow line 40, and from there down to a height level below Flüssigkeitsbe ^¬ container 20 extends. The design of the suction section 72 allows an automatic emptying of the Flüssigkeitsbehäl ^{¬ age} 20 solely by the gravity of the liquid or by the so-called lifting effect of the liquid when or when the suction portion 72 is filled with liquid. In the embodiment according to Figure 1, the overflow ^¬ line 40 is provided with a valve 42 in the area between the interface 50 and the overflow opening 41, which allows in an open condition a flow of fluid in the direction of the interface 50 and in the closed state, the overflow opening 41 from the Interface 50 disconnects. In addition, the rail vehicle 10 according to FIG 1, a suction device at ^¬ 80 which in the area between the interface 50 and the drain port 62 of the common line 60 - is disposed - that is downstream of the interface 50th The function of the valve 42 and the suction device 80 will be explained in more detail below.

The liquid storage device of the rail vehicle 10 is preferably operated as follows:

If the liquid container 20 is to be filled, liquid, for example water, is fed through the filling lines 30 and 31 along the direction of the arrow PI into the liquid container 20.

During the normal memory operation, for example during travel of the railway vehicle 10, 21 liquid can be removed via the connection ^¬ lines. The valve 42 in the overflow conduit 40 is open during normal Speicherbe ^¬ drive, so that flow in the case of too high a liquid ^¬ keitsstandes or sloshing liquid through the overflow opening 41 and through the valve 42 through the interface 50 and from there via the Ablauföff ^¬ voltage 62 can run out of the rail vehicle 10. A unge ^¬ wolltes flooding of the roof portion 11 is avoided through the overflow opening ^¬ 41st In normal operation, the suction device 80 is deactivated and the discharge line 70 and the suction section 72 have no function, because the suction section 72 is liquid-free and thus no automatic emptying via the Entleerungslei ^¬ tion 70 alone due to gravity or alone by the

Lifting action of the liquid can take place conditionally. An automatic filling of the suction section 72 - for example, by sloshing of the liquid while driving - is prevented by the lower overflow opening 41. Is to be emptied of the liquid container 20, for example, a freezing of the liquid in the Flüssigkeitsbehäl ^¬ ter 20 to avoid at low temperatures, the suction means is activated for a short time 80 so that liquid ^¬ ness sucked at the suction port 71 into the sucking portion 72, and this completely with Liquid is filled. As soon as the suction portion is filled 72, will the 20 empty liquid ^¬ container solely by the gravitational force of the liquid or solely by the siphon action of the liquid, because the 62 liquid flowing towards drain opening UN generated terdruck and draws in more liquid at the suction port 71 , As soon as the suction portion is completely filled with flues ^¬ sigkeit 72, an automatic drainage of the liquid is initiated, even if the suction is deactivated below 80; So there is no continuous operation of the suction device 80 needed.

In order to ensure the suction of the liquid at the suction port 71, the valve 42 in the overflow line 40th during the activation of the suction device 80 and during the subsequent automatic emptying of the liquid ^¬ keitsbehälters 20 closed. This prevents that air can be passed through the overflow line 41 in the discharge line 70 and the suction section 72 and it can come by venting the suction section 72 to an unwanted termination of the discharge process.

Should, however, be specifically abge ^¬ broken after the start of the automatic emptying of the liquid container 20 of the emptying process, this may readily be achieved by the valve 42 is opened and air through the overflow ^¬ line is directed into the drain line 70 40, so that the Suction section 72 filled with air and the suction effect of the suction section 72 is interrupted.

In the embodiment according to FIG. 1, therefore, the valve 42 has a double function: when closed, the valve 42 allows the suction device 80 to suck in liquid at the suction opening 71 and to fill the suction section 72 with liquid, so that subsequently an automatic emptying of the liquid container 20 solely by the

Gravity can take place; the emptying of the Flüssigkeitsbe ^¬ container 20 will - regardless of whether the Ansaugein- direction 80 is still in operation and continues to suck ^¬ liquid - automatically continue as soon as the suction portion 72 is filled and the lifting action of the liquid allows self ^¬ active emptying , If the suction of the liquid ^¬ speed in the suction portion 72 and the automatic emptying caused thereby be interrupted, then the valve can be opened 42, whereby air in the suction portion 72 ge ^¬ reached.

The interface 50 is preferably arranged below the height level of the intake opening 71 of the discharge line 70. FIG. 2 shows a further exemplary embodiment of a rail vehicle 10 which is equipped with a liquid storage device. The liquid storage device comprises a liquid container 20, to which one or more connection lines 21, an overflow line 40 and a discharge line 70 are connected.

In contrast to the exemplary embodiment according to FIG. 1, the interface 50, which connects the drainage line 70 and the overflow line 40 to the common line 60, is formed by a directional control valve 100. The directional control valve 100 preferably has a first connection 101 for connection to the common line 60, a second connection 102 for connection to the discharge line 70 and a third connection 103 for connection to the overflow line 40.

The directional control valve 100 preferably allows at least the following two switching positions: In a first switching position, which can also be called overflow position and which is set during normal operation of the rail vehicle 10, the Wegeven ^¬ til 100 connects the first terminal 101 and the third terminal 103 and thus the Community line 60 with the overflow line 40, so that the overflow function of the overflow line 40 is ensured. In the overflow position of the directional valve 100, the second port 102 and the drain line 70 may be separated from the common line 60; however, it is advantageous if the first, second and third connections are connected in order to ensure ventilation of the suction section 72 (see below).

In a second switching position, also known emptying position and provides einge- for emptying of the liquid container 20, the directional valve connects 100 the first to ^¬ circuit 101 and the second port 102 and thus the Ge ^¬ Community line 60 to the drain line 70 so that - after activation of the suction device 80 - liquid the liquid container 20 into the suction port 71 and thus can be sucked into the suction portion 72. In order to prevent a simultaneous suction of air via the overflow opening 41 and the overflow line 40, the directional control valve 100 interrupts the connection between the first port 101 and the third port 103 in the emptying position, so that the overflow opening 41 from the suction port 71 of the emptying line 70 is disconnected. Is a previously started emptying process, in the liquid on the lifting effect of the liquid from the

Liquid container 20 is sucked off, are interrupted, the directional control valve 100 is switched from the emptying position to the overflow position, thereby further draining liquid from the liquid container 20 through the

Suction section 72 is prevented in the direction of drain opening 62. Preferably, in the overflow position, the suction portion 72 is simultaneously connected to the overflow opening 41 to cause venting of the suction portion 72 and interruption of suction.

3 shows an exemplary embodiment of a rail vehicle ^¬ 10, wherein the arrangement of the suction means 80 is chosen to be different. Thus, it can be seen in FIG. 3 that the suction device 80 is arranged in the region of the drain line 70 and thus lies between the suction opening 71 and the interface 50.

Due to the arrangement of the suction device 80 in the region of the drain line 70, an additional valve, such as, for example, the valve 42 in the exemplary embodiment according to FIG. 1, can be dispensed with. The only disadvantage in the ^embodiment according to FIG. 3 is that gravity-induced emptying via the emptying line 70 can no longer be stopped after it has been initiated by the suction device 80. Otherwise, the above explanations in connection with FIGS. 1 and 2 apply correspondingly in the ^exemplary embodiment according to ^FIG . Although the invention in detail by preferred execution ^¬ examples has been illustrated and described in detail, the invention is not limited by the disclosed examples and other variations can be derived therefrom by the skilled artisan without departing from the scope of the invention.

Claims

claims

A liquid storage device having a liquid container (20),

characterized in that

- The liquid storage device comprises a common line (60) which communicates at an interface (50) with an overflow line (40) connected to the liquid container (20) and a discharge line (70) connected to the liquid container (20), and

- The common line (60) in the case of a liquid ^¬ state, which reaches or exceeds a predetermined maximum liquid level in the liquid container (20), liquid from the overflow pipe (40) to a remote from the interface (50) line end (61) Community line (60) passes on and in the case of emptying the liquid container (20) liquid ^¬ speed of the discharge line (70) to that of the

Interface (50) remote line end (61) of the common ^¬ line (60) forwards.

2. Liquid storage device according to claim 1,

characterized in that

- The discharge line (70) in the bottom area of the

Liquid container (20) arranged suction opening (71) and

- The overflow line (40) has a in the liquid container (20) above the suction port (71) arranged and a maximum level determining laying overflow opening (41) ^¬ .

3. Liquid storage device according to one of the preceding claims,

characterized in that

- The drain line (70) has a suction portion (72) extending from the suction port (71) up to a height level which is higher than the overflow opening (41), and from there down to a height level below the Liquid container (20) extends, and

- An emptying of the liquid container (20) is automatically carried out solely by the gravity of the liquid when the suction portion (72) is filled with liquid.

4. Liquid storage device according to one of the preceding claims,

characterized in that

the interface (50) below the height level of the over ^¬ overflow opening (41) of the overflow pipe (40).

5. Liquid storage device according to one of the preceding claims,

characterized in that

the interface (50) below the height level of the suction ^¬ opening (71) of the discharge conduit (70) is located.

6. Liquid storage device according to one of the preceding claims,

characterized in that

the overflow conduit (40) between the interface (50) and the overflow opening (41) a shut-off device, in particular VEN valve (42), which in the open state current a fluid towards interface (50) allows and in the CLOSED ^¬ Senen State is disabled.

7. Liquid storage device according to one of the preceding claims,

characterized in that

the interface (50) is formed by a directional control valve (100), in particular a 3/2-way valve (100), which communicates with a first connection (101) to the common line (60) with a second connection (102) the drain line (70) is connected to the overflow line (40) with a third port (103) and connects the first, second and third ports in a first position and connects the first and second ports in a second position and the third port closes.

8. Liquid storage device according to one of the preceding claims,

characterized in that

the obturator remotely controllable, in particular pneumatically or electrically switchable, is.

9. Liquid storage device according to one of the preceding claims,

characterized in that

in the common line (60) - downstream of the interface (50) - a suction device (80) is arranged, the liquid in the suction portion (72) of the discharge line (70) suck and can fill, whereby the subsequent automatic emptying of the liquid container (20 ) is triggered solely by the gravity of the liquid.

10. Liquid storage device according to one of the preceding claims,

characterized in that

in the discharge line (70) - upstream of the interface ^¬ (50) - a suction device (80) is arranged, the liquid in the suction portion (72) of the discharge line (70) suck and can fill, whereby the subsequent automatic emptying of the liquid container (20) is triggered solely by the gravity of the liquid.

11. vehicle, in particular rail vehicle,

characterized in that

the vehicle is equipped with a liquid storage device according to any one of the preceding claims.

12. A method for operating a liquid storage device with a liquid container (20),

characterized in that

- in a normal operating mode, a shared line

(60) communicating at an interface (50) with an overflow line (40) connected to the liquid container (20) and with an emptying line (70) connected to the liquid container (20), connected to the overflow line (40) and a drainage of liquid through the overflow line (40) is made possible, and

in a drain operation mode, liquid is sucked into a suction port (71) of the drain line (70) located in the bottom area of the liquid tank (20) and sucked into a suction section (72) rising from the suction port (71) up to a height level; which is higher than an overflow opening (41) of the overflow line (40), and from there down to a height level below the liquid container (20) extends, and emptying of the liquid container (20) selbsttä ^¬ tig by the gravity of the liquid the Ent ^¬ empty line (70) and the common line (60) passes through as soon as by sucking the suction section (72) is filled with liquid.