EP3691951B1 - Dispositif d'écoulement et procédé de commande et/ou de réglage d'une pression dans un dispositif pneumatique de transport sable pour un véhicule ferroviaire et dispositif de transport de sable doté d'un dispositif d'écoulement - Google Patents

Dispositif d'écoulement et procédé de commande et/ou de réglage d'une pression dans un dispositif pneumatique de transport sable pour un véhicule ferroviaire et dispositif de transport de sable doté d'un dispositif d'écoulement Download PDF

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Publication number
EP3691951B1
EP3691951B1 EP18785534.1A EP18785534A EP3691951B1 EP 3691951 B1 EP3691951 B1 EP 3691951B1 EP 18785534 A EP18785534 A EP 18785534A EP 3691951 B1 EP3691951 B1 EP 3691951B1
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EP
European Patent Office
Prior art keywords
pressure
sand
pressure chamber
flow
air
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.)
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Application number
EP18785534.1A
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German (de)
English (en)
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EP3691951A1 (fr
Inventor
Martin Schmid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
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Publication of EP3691951A1 publication Critical patent/EP3691951A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
    • B61C15/08—Preventing wheel slippage
    • B61C15/10—Preventing wheel slippage by depositing sand or like friction increasing materials

Definitions

  • the present approach relates to a flow device for controlling and/or adjusting a pressure in a pneumatic sand conveying device for a rail vehicle, a method for controlling a pressure in a pneumatic sand conveying device for a rail vehicle and a sand conveying device with a flow device.
  • a conveyed amount of sand is varied via a conveying air mass flow and a sanding pipe of the sand conveying device is emptied by means of an after-blow device arranged in the area of a transport line with channels pointing in the direction of flow of the sand.
  • the WO 2015/044244 A1 describes such a sanding device for a rail vehicle and a method for providing sand for a rail vehicle.
  • the DE 20 2013 000 635 U1 discloses a compressed-air-operated sand-spreading device that sucks in sand from a reservoir by means of a compressed-air injector and conveys it in the direction of travel in front of the wheels of a rail vehicle, the air pressure in front of the injector nozzle being made available briefly higher than it is at the beginning of a sand-spreading process by means of a pressure regulator, throttle point, pressure regulator, compressed air tank is required for the desired sand mass flow.
  • the object of the present approach is an improved flow device for controlling and/or adjusting a pressure in a pneumatic sand conveying device for a rail vehicle, an improved method for controlling and/or adjusting a pressure in a pneumatic sand conveying device for a rail vehicle and a sand conveying device to provide an improved flow device.
  • a conveyed sand mass flow in a sand conveying device can advantageously be set and/or controlled or regulated by varying a pressure by means of a flow device presented here. At least part of a sanding pipe or even the complete sanding pipe of the sand conveying device can also be emptied quickly and easily by the flow device.
  • a flow device for controlling and/or adjusting a pressure in a pneumatic sand conveying device for a rail vehicle has at least one pressure chamber and a controllable pressure device.
  • the pressure chamber comprises a feed nozzle interface to a feed nozzle device for generating a pressure in the pressure chamber.
  • the controllable pressure device is coupled to the pressure chamber and designed to generate a pressure in order to control the pressure in the pressure chamber.
  • a pressure can be understood to mean a negative pressure that is generated or provided, for example, in a negative pressure chamber as the pressure chamber.
  • the pressure for example in the Pressure chamber
  • the pressure corresponds to an ambient pressure around the pneumatic sand transport device.
  • the pressure generated in the pressure chamber serves to suck sand from a sand container of the sand conveying device, whereupon the sand is conveyed downwards in the direction of a transport line of the sand conveying device, where the sand leaves the sand conveying device.
  • a pressure which has arisen in the pressure chamber can be reduced by the generation of the pressure by the flow device in the pressure chamber, as a result of which the conveyed sand mass flow can in turn be regulated.
  • the controllable pressure device has at least one blowing-in device for blowing air into the pressure chamber in order to control the pressure.
  • the injection device can, for example, be arranged at least partially outside the pressure chamber.
  • the pressure chamber can have at least one air inlet opening, which can be arranged, for example, in the area of the conveyor nozzle interface.
  • the pressure chamber can have at least one additional air inlet opening for admitting the air provided by the injection device have air.
  • the further air inlet opening can also be arranged in the area of the conveyor nozzle interface.
  • the pressure chamber has a plurality of air inlet openings for letting in the air provided by the injection device, the air inlet openings can be arranged concentrically around the conveyor nozzle interface and/or a nozzle axis of the conveyor nozzle. This enables the air to be introduced into the pressure chamber in a uniform and/or targeted manner.
  • the controllable pressure device can also have at least one bypass line, which is designed to fluidly connect the injection device to the at least one air inlet opening.
  • the bypass line can be a connecting piece such as a bypass hose, which is arranged between the injection device and the air inlet opening.
  • the bypass line can also be an extension of the air inlet opening, which can be, for example, an embedded channel in a material of a pressure chamber wall of the pressure chamber. If the pressure chamber has a plurality of air inlet openings, such a bypass line can be arranged between each of the air inlet openings and the injection device. Depending on the orientation of such a bypass line or a number of such bypass lines, the air can be routed into certain desired areas of the pressure chamber.
  • controllable pressure device can advantageously be designed to generate the pressure in response to a sensor signal.
  • the controllable pressure device can be designed to generate the pressure in response to the sensor signal of an air mass flow sensor and/or a pressure sensor.
  • This air mass flow sensor and/or the pressure sensor can be arranged in the area of the sand container of the sand conveying device.
  • the sensor signal from the air mass flow sensor can represent a volume flow measured in the area of the sand container.
  • the sensor signal from the pressure sensor can represent a pressure loss detected in the area of the sand container.
  • a sand conveying device has a flow device, which is implemented in an embodiment presented here.
  • the sand hauler may be a pneumatic sand hauler designed to be incorporated into a rail vehicle.
  • a sand conveying device presented here can serve as a replacement for known sand conveying devices, the sand conveying device presented here realizing the already described advantages of the flow device thanks to the flow device.
  • a method for controlling and/or adjusting a pressure in a pneumatic sand conveying device for a rail vehicle has at least the following steps: providing a pressure chamber with a feed nozzle interface to a feed nozzle device for generating a pressure in the pressure chamber and a controllable pressure device coupled to the pressure chamber; and
  • controllable pressure means to control or adjust the pressure in the pressure chamber.
  • This method may be executable using the flow device presented above. Also by such a method already described advantages of the flow device can be realized technically simply and inexpensively.
  • an embodiment includes an "and/or" link between a first feature and a second feature, this should be read in such a way that the embodiment according to one embodiment includes both the first feature and the second feature and according to a further embodiment either only that having the first feature or only the second feature.
  • FIG. 1 shows a schematic cross-sectional representation of a pneumatic sand conveying device 100 with a flow device 105 for controlling and/or adjusting a pressure in the sand conveying device 100 for a rail vehicle according to an exemplary embodiment.
  • the flow device 105 is designed to control and/or adjust the pressure in the pneumatic sand conveying device 100 .
  • the flow device 105 has at least one pressure chamber 110 and a controllable pressure device 115.
  • the pressure chamber 110 includes a delivery nozzle interface 120 to a delivery nozzle 125, which in the following description can also be referred to synonymously as a delivery nozzle device, for generating the pressure in the pressure chamber 110.
  • the controllable pressure device 115 is coupled to the pressure chamber 110 and is designed to To generate pressure to control the pressure in the pressure chamber 110.
  • the sand conveying device 100 has a compressed air connection 130, a pressure adjustment screw 135, the conveying nozzle 125, suction channels 140, a sand container 145, an adapter 150, a Laval nozzle 155, a transport line 160 and air supply channels 165.
  • Compressed air is blown into the pneumatic sand conveying device 100 via the compressed air connection 130 .
  • a pressure can be adjusted via the pressure adjustment screw 135 .
  • the compressed air then flows via the conveying nozzle 125, which can also be referred to as the propulsion nozzle, into the pressure chamber 110, whereby sand 170 is discharged from the sand container 145 or the adapter via the intake channels 140 due to the Venturi effect or the pressure developing in the pressure chamber 110 150 is sucked.
  • the sand 170 is transported downwards via the transport line 160 via the optional Laval nozzle 155, which increases a flow rate.
  • a pressure equalization can take place via the air inlet ducts 165 , that is to say the air drawn in through the intake air ducts 140 flows via the air inlet ducts 165 .
  • the direction of flow of the air is in the 1 indicated with arrows.
  • the flow device 105 presented here advantageously enables pneumatic control of a sand conveyor in the form of the sand conveyor device 100 by means of at least one bypass.
  • the flow device 105 presented here advantageously allows a change in the amount of sand 170 conveyed by generating the pressure.
  • no special blow-out devices are advantageously required in order to completely empty a sanding pipe of the sand conveying device 100 .
  • FIG. 2 shows a schematic side view of a flow device 105 according to an embodiment. It can be an embodiment of the basis of 1 act described flow device 105.
  • controllable pressure device 115 has at least one injection device 200 for injecting air 205 into the pressure chamber 110 in order to control and/or adjust the pressure.
  • the pressure chamber 110 has at least one air inlet opening 210 for letting in the air 205 provided by the injection device 200 .
  • the pressure chamber 110 has a plurality of air inlet openings 210 for letting in the air 205 provided by the injection device 200 . In 2 two of the air inlet openings 210 can be seen, which are arranged concentrically around the conveyor nozzle interface 120 and/or a nozzle axis of the conveyor nozzle 125.
  • controllable pressure device 115 has at least one bypass line, which is designed to fluidly connect the injection device 200 to the at least one air inlet opening 210 and/or the plurality of air inlet openings 210.
  • the controllable pressure device 115 is designed to generate the pressure in response to a sensor signal.
  • the controllable pressure device 115 according to this exemplary embodiment is designed to generate the pressure in response to the sensor signal of an air mass flow sensor and/or a pressure sensor.
  • bypass air 205 By introducing bypass air 205 through air inlets in the form of air inlet openings 210 arranged concentrically around the nozzle axis, the pressure in the pressure chamber 110 is increased and the air mass flow sucked in from the environment through the sand container varies accordingly.
  • versions of the controllable pressure generation device 115 are also conceivable.
  • FIG. 3 shows a flowchart of a method 300 for controlling and/or adjusting a pressure in a pneumatic sand conveying device for a rail vehicle according to an embodiment. This can be a method 300 that can be executed and/or controlled by one of the flow devices described with reference to one of the preceding figures.
  • the method 300 has at least one step 305 of providing and one step 310 of generating.
  • step 305 of providing a pressure chamber with a delivery nozzle interface to a delivery nozzle device for generating a pressure in the pressure chamber and a controllable pressure device coupled to the pressure chamber are provided.
  • step 310 of generating a pressure is generated by the controllable pressure device in order to control the pressure in the pressure chamber.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)

Claims (11)

  1. Dispositif (105) d'écoulement de commande et/ou de réglage d'une pression dans une installation (100) pneumatique de transport de sable d'un véhicule ferroviaire, le dispositif (105) d'écoulement ayant au moins les caractéristiques suivantes :
    - une chambre (110) sous pression ayant une interface (120) de buse de refoulement avec un dispositif (125) de buse de refoulement pour la production d'une pression dans la chambre (110) sous pression ; et
    - au moins un dispositif (115) de pression, qui peut être commandé, qui communique avec la chambre (110) sous pression et qui est constitué pour produire une pression afin de commander et/ou de régler la pression dans la chambre (110) sous pression,
    caractérisé en ce que
    - le dispositif (115) de pression pouvant être commandé a au moins un dispositif (200) d'insufflation pour l'insufflation d'air (205) dans la chambre (110) sous pression afin de commander la pression.
  2. Dispositif (105) d'écoulement suivant la revendication 1, dans lequel la chambre (110) sous pression a au moins une ouverture (210) d'admission d'air pour admettre l'air mis à disposition par le dispositif (200) d'insufflation.
  3. Dispositif (105) d'écoulement suivant la revendication 2, dans lequel l'ouverture (210) d'admission d'air est disposée dans la partie de l'interface (120) de buse de refoulement.
  4. Dispositif (105) d'écoulement suivant l'une des revendications 2 à 3, dans lequel la chambre (110) sous pression a une pluralité d'ouvertures (210) d'admission d'air pour l'admission de l'air (205) mis à disposition par le dispositif (200) d'insufflation.
  5. Dispositif (105) d'écoulement suivant la revendication 4, dans lequel la pluralité des ouvertures (210) d'admission d'air est disposée concentriquement autour de l'interface (120) de buse de refoulement et/ou d'un axe de la buse (125) de refoulement.
  6. Dispositif (105) d'écoulement suivant l'une des revendications 2 à 5, dans lequel le dispositif (115) de pression pouvant être commandé a au moins un conduit de dérivation, qui est constitué pour mettre le dispositif (200) d'insufflation en communication fluidique avec la au moins une ouverture (210) d'admission d'air et/ou une pluralité d'ouvertures (210) d'admission d'air.
  7. Dispositif (105) d'écoulement suivant l'une des revendications précédentes, dans lequel le dispositif (115) de pression pouvant être commandé est constitué pour produire la pression en réaction à un signal de capteur.
  8. Dispositif (105) d'écoulement suivant la revendication 7, dans lequel le dispositif (115) de pression pouvant être commandé est constitué pour produire la pression en réaction au signal d'un capteur de courant massique d'air et/ou d'un capteur de pression.
  9. Installation (100) de transport de sable comprenant un dispositif (105) d'écoulement suivant l'une des revendications précédentes.
  10. Procédé (300) de commande et/ou de réglage d'une pression dans une installation (100) pneumatique de transport de sable d'un véhicule ferroviaire, dans lequel le procédé (300) a au moins les stades suivants :
    - on se procure (305), une chambre (110) sous pression ayant une interface (120) de buse de refoulement avec un dispositif (125) de buse de refoulement pour la production d'une pression dans la chambre (110) sous pression, et un dispositif (115) de pression communiquant avec la chambre (110) sous pression et pouvant être commandé, qui a au moins un dispositif (200) d'insufflation ; et
    - on produit (310), une pression par le dispositif (115) de pression pouvant être commandé afin de commander et/ou de régler la pression dans la chambre (110) sous pression,
    caractérisé en ce qu'
    au stade (310) de production, on insuffle l'air (205) dans la chambre (110) sous pression en utilisant le dispositif (200) d'insufflation pour commander la pression.
  11. Programme d'ordinateur, qui est conçu pour effectuer et/ou commander le stade du procédé (300) suivant la revendication 10 de production d'une pression par le dispositif de pression pouvant être commandé.
EP18785534.1A 2017-10-02 2018-10-01 Dispositif d'écoulement et procédé de commande et/ou de réglage d'une pression dans un dispositif pneumatique de transport sable pour un véhicule ferroviaire et dispositif de transport de sable doté d'un dispositif d'écoulement Active EP3691951B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017122860.8A DE102017122860A1 (de) 2017-10-02 2017-10-02 Strömungseinrichtung und Verfahren zum Steuern und/oder Einstellen eines Drucks in einer pneumatischen Sandfördervorrichtung für ein Schienenfahrzeug und Sandfördervorrichtung mit einer Strömungseinrichtung
PCT/EP2018/076572 WO2019068602A1 (fr) 2017-10-02 2018-10-01 Dispositif d'écoulement et procédé de commande et/ou de réglage d'une pression dans un dispositif pneumatique de transport sable pour un véhicule ferroviaire et dispositif de transport de sable doté d'un dispositif d'écoulement

Publications (2)

Publication Number Publication Date
EP3691951A1 EP3691951A1 (fr) 2020-08-12
EP3691951B1 true EP3691951B1 (fr) 2022-06-22

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Application Number Title Priority Date Filing Date
EP18785534.1A Active EP3691951B1 (fr) 2017-10-02 2018-10-01 Dispositif d'écoulement et procédé de commande et/ou de réglage d'une pression dans un dispositif pneumatique de transport sable pour un véhicule ferroviaire et dispositif de transport de sable doté d'un dispositif d'écoulement

Country Status (3)

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EP (1) EP3691951B1 (fr)
DE (1) DE102017122860A1 (fr)
WO (1) WO2019068602A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020203182A1 (de) 2020-03-12 2021-09-16 Siemens Mobility GmbH Anordnung zur Erhöhung des Kraftschlussbeiwerts bei einem Schienenfahrzeug
DE102020215952A1 (de) 2020-12-15 2022-06-15 Siemens Mobility GmbH Streumittelanlage für ein Schienenfahrzeug

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013000635U1 (de) * 2013-01-23 2013-04-22 Bernd Federhen Druckluftbetriebene Sandstreueinrichtung für Schienenfahrzeuge

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410409A1 (de) * 1984-03-21 1985-09-26 Knorr-Bremse GmbH, 8000 München Sandungsvorrichtung fuer schienenfahrzeuge
EP1312488A3 (fr) * 2001-11-15 2004-01-02 Goldmann, Norbert Epandeur pour matière à épandre
DE10252466A1 (de) * 2002-11-10 2004-05-27 Ibeg Systems Gmbh Druckluftbetriebene Sandstreuvorrichtung und Verfahren zum Streuen von Sand
DE102013016167A1 (de) * 2013-09-30 2015-04-02 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Sandungsvorrichtung für ein Schienenfahrzeug und Verfahren zum Bereitstellen von Sand für ein Schienenfahrzeug
AT516916B1 (de) * 2015-02-26 2021-05-15 Knorr Bremse Gmbh Dosieranlage für eine Sandungsanlage eines Schienenfahrzeugs

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013000635U1 (de) * 2013-01-23 2013-04-22 Bernd Federhen Druckluftbetriebene Sandstreueinrichtung für Schienenfahrzeuge

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EP3691951A1 (fr) 2020-08-12
WO2019068602A1 (fr) 2019-04-11
DE102017122860A1 (de) 2019-04-04

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