EP3691950A1 - Flow device and method for controlling and/or adjusting a counter pressure in a pneumatic sand-conveying device for a rail vehicle, and sand-conveying device having a flow device - Google Patents
Flow device and method for controlling and/or adjusting a counter pressure in a pneumatic sand-conveying device for a rail vehicle, and sand-conveying device having a flow deviceInfo
- Publication number
- EP3691950A1 EP3691950A1 EP18783396.7A EP18783396A EP3691950A1 EP 3691950 A1 EP3691950 A1 EP 3691950A1 EP 18783396 A EP18783396 A EP 18783396A EP 3691950 A1 EP3691950 A1 EP 3691950A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sand
- conveying
- flow
- nozzle unit
- pressure
- 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
- 238000000034 method Methods 0.000 title claims description 18
- 239000004576 sand Substances 0.000 claims abstract description 107
- 238000002347 injection Methods 0.000 claims description 22
- 239000007924 injection Substances 0.000 claims description 22
- 238000007664 blowing Methods 0.000 claims description 13
- 230000004044 response Effects 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- 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
- B61C15/102—Preventing wheel slippage by depositing sand or like friction increasing materials with sanding equipment of mechanical or fluid type, e.g. by means of steam
Definitions
- the present approach relates to a flow device for controlling and / or adjusting a back pressure in a pneumatic sand conveyor device for a rail vehicle, a method for controlling and / or adjusting a
- a conveyed amount of sand is varied over a conveying air mass flow and emptying a sanding pipe of the
- Sand conveying device by means of a blower with pointing in the flow direction of the sand channels.
- the object of the present approach is an improved flow device for controlling and / or adjusting a back pressure in a pneumatic sand conveyor device for a rail vehicle, an improved method for controlling a back pressure in a pneumatic
- a flow device for controlling and / or adjusting a back pressure in a pneumatic sand conveyor for a
- Rail vehicle a method for controlling and / or adjusting a back pressure in a pneumatic sand conveyor device for a rail vehicle and a sand conveyor device with a flow device according to the main claims solved.
- Subject of the present approach is also a computer program.
- Sand conveyor be emptied by the flow device quickly and easily.
- a flow device for controlling a back pressure in a pneumatic sand conveyor device for a rail vehicle has at least one
- the conveying channel device is shaped to convey sand.
- the conveying channel device may be a sanding pipe or a section of a sanding pipe of the sand conveying device.
- Counter-pressure device is coupled to the conveying channel device and arranged and / or formed to counter-pressure and / or perpendicular to a conveying direction of the conveyed in the conveyor channel device sand or against and / or perpendicular to an intended conveying direction of the conveyable in the conveyor channel device sand, the back pressure ,
- tubular conveying channel device at one end an interface and at one end opposite the end another
- the interface may be arranged in a received state of the flow device in the sand conveyor device facing a compressed air connection of the sand conveyor and, for example, be fluidly connected to a vacuum chamber or mixing chamber of the sand conveyor.
- the interface arranged opposite the other interface can be arranged facing an exit of the sand conveyor, through which the sand leaves the sand conveyor.
- Counterpressure device can accordingly be arranged and / or be formed to counterpressure in the direction of the compressed air connection and thus counter to the conveying direction of the in the
- the controllable counter-pressure device can for generating the counterpressure at least one injection device for blowing air into the
- blowing direction which has at least one component opposite or perpendicular to the conveying direction or the intended conveying direction to generate the back pressure.
- controllable counter-pressure device for guiding the air counter to or perpendicular to the conveying direction or the intended conveying direction at least a first
- Nozzle unit which between the injection device and the
- Delivery channel device is arranged and the injection device fluidly with the
- This first nozzle unit can be formed, for example, as a substantially straight shaped connecting tube. If the first nozzle unit is arranged transversely to the conveying channel device, this allows an inflow of air into the conveying channel device counter to the conveying direction of the sand. If the first nozzle unit is arranged perpendicular to the conveying channel device, this allows the inflow of air into the conveying channel device perpendicular to the conveying direction of the sand.
- controllable counterpressure device can have at least one second nozzle unit, in particular wherein the second
- Nozzle unit can be connected to the injection device and / or a further injection device. Also, the second nozzle unit can transverse to the
- Delivery channel device in particular be arranged perpendicular to the conveyor channel device.
- the second nozzle unit may be fluidly connected to the conveyor channel device on one of the first nozzle unit opposite side of the conveyor channel means.
- the controllable counterpressure device additionally has at least one third nozzle unit which is fluidically connected to the delivery channel device, this can allow an even higher counterpressure.
- the third nozzle unit can in this case be arranged in particular between the first nozzle unit and the second nozzle unit and / or with the injection device or an additional one
- controllable counter-pressure device may also comprise at least one pinch valve, which is adapted to by changing the
- the back pressure can be generated quickly and easily controllable.
- controllable back pressure device may advantageously be designed to generate the back pressure in response to a sensor signal.
- controllable counter-pressure device may be designed to be 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 region of a sand container of the sand conveyor.
- the sensor signal of the air mass flow sensor can represent a volume flow measured in the region of a sand container.
- the sensor signal of the pressure sensor can represent a detected in the region of the sand tank pressure loss.
- a sand conveying device has a flow device, which is embodied in an embodiment presented here.
- the sand-conveying device may be a pneumatic sand-conveying device, which is shaped to be received in a rail vehicle.
- a sand conveying device presented here can serve as a substitute for known sand conveyors, the here presented Sand conveying device realizes the advantages of the flow device thanks to the flow device.
- a method for controlling and / or adjusting a back pressure in a pneumatic sand conveyor for a rail vehicle comprises at least the following steps:
- This method can be performed using the previously presented
- Flow device be executable. Also by such a method, the already described advantages of the flow device can be realized technically simple and inexpensive.
- Also of advantage is a computer program product or computer program with program code which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory and is used to carry out, implement and / or control the steps of the method, in particular if Program product or program is executed on a computer or a device.
- a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory
- Fig. 1 is a schematic cross-sectional view of a rail vehicle with a pneumatic sand conveyor device with a flow device for Controlling and / or adjusting a back pressure in the sand conveyor according to an embodiment
- Fig. 2 is a schematic cross-sectional view of a sand conveyor with a
- Fig. 3 is a schematic side view of a flow device according to a
- Fig. 4 is a schematic side view of a flow device according to a
- FIG. 5 is a flowchart of a method for controlling and / or adjusting a back pressure in a pneumatic sand conveyor for a
- an exemplary embodiment includes a "and / or" link between a first feature and a second feature, this is to be read such that the
- Embodiment according to an embodiment both the first feature and the second feature and according to another embodiment, either only the first feature or only the second feature.
- FIG. 1 shows a schematic cross-sectional illustration of a rail vehicle 100 having a sand conveyor device 105 with a flow device 110 for controlling and / or setting a counterpressure 15 in the sand conveyor device 105 according to one exemplary embodiment.
- the sand conveyor 105 is formed in this embodiment as a pneumatic sand conveyor 105 and disposed in the rail vehicle 100.
- the flow device 110 is part of the sand conveying device 105 and designed to counteract and / or counterpressure in the pneumatic sand conveying device 100 by means of a controllable counterpressure device perpendicular to a conveying direction of the conveyed in the flow device 1 10 sand or against and / or perpendicular to an intended conveying direction of the flowable in the flow device 1 10 to be generated sand.
- FIG. 2 shows a schematic cross-sectional view of a sand conveyor device 105 with a flow device 110 according to one exemplary embodiment. It may be an embodiment of the described with reference to FIG. 2
- the flow device 1 10 has at least one delivery channel device 200 and the controllable
- Counterpressure device 205 on.
- the conveyor channel device 200 is shaped to convey sand 210.
- the controllable counter-pressure device 205 is connected to the
- Delivery channel device 200 is coupled and arranged and / or formed to counter to or according to an alternative embodiment perpendicular to the
- the direction of conveyance 215 of the sand 210 conveyed in the conveying channel device 200 or counter to and / or perpendicular to an intended conveying direction 215 of the sand 210 which can be conveyed in the conveying channel device 200, is to produce the back pressure 15.
- the sand conveyor device 105 according to this embodiment, a compressed air connection 220, a Druckeinstellschraube 225, a motive nozzle 230, a vacuum chamber 235, intake ports 240, a sand container 250, an adapter 255, a Laval nozzle 260 and Zuluftkanäle 265 on.
- Via the compressed air connection 220 compressed air is in the pneumatic
- a pressure can here according to this
- Embodiment about the Druckeinstellschraube 225 can be adjusted.
- Compressed air then flows via the motive nozzle 230 into the vacuum chamber 235, whereby via the suction channels 240 due to the Venturi effect or in the vacuum chamber 235 forming negative pressure of the sand 210 from the
- Sand container 250 and the adapter 255 is sucked.
- the sand 210 is lowered via the optional Laval nozzle 260, which increases a flow rate, via the delivery channel device 200, which also serves as a transport line can be designated, transported away.
- the delivery channel device 200 Via the supply air ducts 265, a pressure equalization can take place, that is, the air sucked through the intake ducts 240 flows over the supply air ducts 265.
- the flow direction of the air is indicated in FIG. 2 by arrows.
- a backpressure can be understood to mean a pressure which is counteracted by a counterflow of air, that is to say by an air flow
- the back pressure may be the pressure in a delivery channel device 200, which is composed of the pressure which is bent by a nozzle 230 and the pressure which is generated by a nozzle unit 280.
- the flow device 110 is arranged on an underside of the sand conveyor 105 in an operative state of the sand conveyor 105 shown here.
- Delivery channel device 200 at one end an interface and at one end opposite the end of another interface 270 from.
- the interface is arranged facing the compressed air port 220 of the sand conveyor 105 and fluidly connected thereto.
- the interface 270 arranged opposite the interface is arranged facing an exit of the sand conveyor 105, through which the sand 210 leaves the sand conveyor 105.
- the controllable counter-pressure device 205 is accordingly arranged and shaped to the counter pressure 1 15 in the direction of the compressed air port 220 and thus against the generated by the compressed air port 220
- the controllable counter-pressure device 205 has according to this embodiment, at least one injector 275 for blowing air into the
- Delivery channel means 200 wherein the injection means 275 is adapted to inject the air in a blowing direction, the at least one component opposite and / or according to an alternative embodiment perpendicular to the conveying direction 215 or the intended conveying direction 215 to the counter-pressure 1 to 15 produce.
- controllable counter-pressure device 205 for guiding the air has at least one first nozzle unit 280, which is located between the injection device 275 and the
- Delivery channel device 200 is arranged and the injection device 275 fluidly connected to the conveyor channel device 200.
- controllable counter-pressure device 205 according to this
- Embodiment a second nozzle unit 285, in particular wherein the second nozzle unit 285 is connected to the injection device 275.
- the nozzle units 280, 285 are arranged transversely to the conveyor channel device 200. According to an alternative embodiment, one of the nozzle units 280, 285 or both nozzle units 280, 285 is arranged perpendicular to the conveyor channel device 200. According to this embodiment, the second nozzle unit 285 is on a side opposite to the first nozzle unit 280
- Delivery channel device 200 fluidly connected to the conveyor channel device 200.
- the back pressure can be generated according to an embodiment by a spring pressure of a spring or a valve which are coupled to the nozzle unit 280, 285, for example, are fluidically coupled.
- the spring pressure can be generated in this case for example by a spring of a pressure reducing valve in combination with a compressed air generator.
- Counterpressure device 205 additionally or alternatively to the injection device 275 and the nozzle units 280, 285 at least one pinch valve, which is designed to generate by changing the cross section of the conveying channel device 200, the back pressure 1 15.
- the controllable counter-pressure device 205 is designed to generate the back pressure 15 in response to a sensor signal. According to this
- controllable counter-pressure device 205 is designed to generate the back pressure 15 in response to the sensor signal of an air mass flow sensor and / or a pressure sensor.
- the here presented flow device 1 10 advantageously allows a pneumatic control of a sand conveyor in the form of the sand conveyor 105 by varying the back pressure 1 15th
- Stopping a sand extraction with simultaneous emptying of the conduit system in the form of at least the channel conveyor 200 and / or the Laval nozzle 260 and / or the vacuum chamber 235 allows.
- a separate injection device 275 By blowing in air, primarily but not exclusively against or perpendicular to the conveying direction 215, which may also be referred to as the main flow direction, in a separate injection device 275, which is connected downstream of a sand transport unit in the form of the sanding tube, with simultaneous injection of the conveying air through the compressed air port 220, a pressure in the vacuum chamber 235, which can also be referred to as a mixing chamber, and thus a lot of from the environment by the sand container 250 sucked air, which for the
- Conveying mass flow not and the conveying speed of the medium is maintained. This can be used in particular for emptying the subsequent line system. Physically, this is based on that the system pressure within the vacuum chamber 235 is raised by varying the back pressure 15. In addition to the above-described counterpressure increase by blowing air, this can also be controlled by other controllable devices, eg. B. at least one of the already mentioned pinch valves can be achieved. Since additionally sucked from the environment by the sand container 250 air mass flow is measured directly via a volume flow meter and / or indirectly z. B. on a resulting pressure drop, so a closed control system is created.
- the variation of the pressure in the vacuum chamber 235 can be achieved in this case particularly effectively if the air is blown in the opposite direction or, according to the alternative embodiment, perpendicular to the conveying direction 215 as in this embodiment.
- FIG. 3 shows a schematic side view of a flow device 110 according to one exemplary embodiment.
- This may be an exemplary embodiment of the flow devices 1 10 described with reference to FIGS. 1 to 2, with the difference that in FIG. 3, an injection pointing perpendicular or at least almost perpendicular to the conveying direction 215 is shown.
- the nozzle units 280, 285 are arranged perpendicular or at least almost perpendicular to the conveyor channel device 200.
- FIG 4 shows a schematic side view of a flow device 110 according to one exemplary embodiment. This may be an exemplary embodiment of the flow devices 110 described with reference to FIGS. 1 to 2, with the difference that the controllable counterpressure device according to this
- Embodiment a third nozzle unit 400 which fluidly with the
- Delivery channel device 200 is connected, in particular wherein the third nozzle unit 400 between the first nozzle unit 280 and the second nozzle unit 285th
- FIG. 5 shows a flowchart of a method 500 for controlling and / or adjusting a back pressure in a pneumatic sand conveyor for a
- Rail vehicle according to an embodiment. This may be a method 500 that can be executed and / or controlled by one of the flow devices described with reference to the preceding figures.
- the method 500 has at least one providing step 505 and one generating step 510.
- step 505 of providing a
- Delivery channel device for conveying sand and provided with the conveyor channel device controllable counter-pressure device provided.
- Generating a back pressure against and / or perpendicular to a conveying direction of the conveyed in the conveyor channel device sand or against and / or perpendicular to an intended conveying direction of the conveyable in the conveyor channel means sand generated by the controllable counter-pressure device.
- controllable counterpressure device 210 Sand
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL18783396T PL3691950T3 (en) | 2017-10-02 | 2018-10-01 | Flow device and method for controlling and/or adjusting a counter pressure in a pneumatic sand-conveying device for a rail vehicle, and sand-conveying device having a flow device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017122859.4A DE102017122859B3 (en) | 2017-10-02 | 2017-10-02 | Flow device and method for controlling and / or adjusting a back pressure in a pneumatic sand conveyor device for a rail vehicle and a sand conveyor device with a flow device |
PCT/EP2018/076568 WO2019068598A1 (en) | 2017-10-02 | 2018-10-01 | Flow device and method for controlling and/or adjusting a counter pressure in a pneumatic sand-conveying device for a rail vehicle, and sand-conveying device having a flow device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3691950A1 true EP3691950A1 (en) | 2020-08-12 |
EP3691950B1 EP3691950B1 (en) | 2021-09-01 |
Family
ID=63112669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18783396.7A Active EP3691950B1 (en) | 2017-10-02 | 2018-10-01 | Flow device and method for controlling and/or adjusting a counter pressure in a pneumatic sand-conveying device for a rail vehicle, and sand-conveying device having a flow device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3691950B1 (en) |
DE (1) | DE102017122859B3 (en) |
ES (1) | ES2898764T3 (en) |
PL (1) | PL3691950T3 (en) |
WO (1) | WO2019068598A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020203182A1 (en) | 2020-03-12 | 2021-09-16 | Siemens Mobility GmbH | Arrangement for increasing the coefficient of adhesion in a rail vehicle |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3410409A1 (en) * | 1984-03-21 | 1985-09-26 | Knorr-Bremse GmbH, 8000 München | Device for dispensing sand for rail vehicles |
DE19737984A1 (en) * | 1997-08-30 | 1999-03-04 | Duewag Ag | Filling system for sand supply container inside rail vehicle |
US20140151460A1 (en) * | 2012-12-02 | 2014-06-05 | General Electric Company | System and method for maintaining sensor performance |
DE202013000635U1 (en) | 2013-01-23 | 2013-04-22 | Bernd Federhen | Pneumatic sand dispenser for rail vehicles |
DE102013016167A1 (en) * | 2013-09-30 | 2015-04-02 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Sanding device for a rail vehicle and method for providing sand for a rail vehicle |
DE202014004632U1 (en) | 2014-06-10 | 2014-08-29 | Klein Anlagenbau Ag | Spreader for the discharge of bulk material, in particular of brake sand, on rail-bound vehicles |
-
2017
- 2017-10-02 DE DE102017122859.4A patent/DE102017122859B3/en active Active
-
2018
- 2018-10-01 WO PCT/EP2018/076568 patent/WO2019068598A1/en unknown
- 2018-10-01 EP EP18783396.7A patent/EP3691950B1/en active Active
- 2018-10-01 PL PL18783396T patent/PL3691950T3/en unknown
- 2018-10-01 ES ES18783396T patent/ES2898764T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3691950B1 (en) | 2021-09-01 |
ES2898764T3 (en) | 2022-03-08 |
DE102017122859B3 (en) | 2018-08-30 |
PL3691950T3 (en) | 2022-01-17 |
WO2019068598A1 (en) | 2019-04-11 |
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