EP4615737A1 - Modulares partikelaustragungssystem - Google Patents
Modulares partikelaustragungssystemInfo
- Publication number
- EP4615737A1 EP4615737A1 EP23828348.5A EP23828348A EP4615737A1 EP 4615737 A1 EP4615737 A1 EP 4615737A1 EP 23828348 A EP23828348 A EP 23828348A EP 4615737 A1 EP4615737 A1 EP 4615737A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- particle
- compressed air
- discharge system
- modular
- flow
- 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.)
- Pending
Links
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 invention relates to a modular particle removal system.
- the invention also relates to a rail vehicle with such a modular particle removal system.
- the invention also relates to a method for particle removal.
- sand is spread on the tracks in front of the wheels of a rail vehicle.
- so-called sand systems also known as sand spreaders or particle removal systems, are used, which are mounted on the outside of rail vehicles.
- a rail vehicle particle removal system uses gravity or compressed air to transport particles from a storage container, also called a sandbox or particle storage facility, through a particle conveyor shaft, also called a sand drop pipe, to a wheel-rail gap between a wheel of the rail vehicle and a rail on which the rail vehicle travels.
- the conveyed particles fall onto the rails to increase the friction between the wheel and the rail.
- the particles are blown onto the rail by a blower with air.
- an additional compressed air control unit with external compressed air control with several different pressure reduction valves is conventionally used, which controls different pressure levels.
- the arrangement is quite complex due to the large number of different pressure reduction valves. The task is therefore to specify a particle removal system and a corresponding particle removal process with several different air consumption levels, which are less complex to implement and easier to scale than is the case with conventional particle removal systems.
- the modular particle discharge system according to the invention preferably for a rail vehicle, is preferably mounted on a rail vehicle, preferably on a car body of a rail vehicle.
- the modular particle discharge system is positioned and aligned such that the particles emitted by the modular particle discharge system fall onto the rail to be traveled on in front of a wheel of the rail vehicle in order to increase the friction between wheel and rail and thus increase the traction and braking force of the rail vehicle.
- the modular particle discharge system according to the invention has a particle storage device for storing particles to be discharged.
- the modular particle discharge system according to the invention comprises a compressed air device.
- a compressed air device generates an air flow with a predefined air pressure.
- the compressed air device comprises a compressed air generation unit, preferably a blower, with which an air flow with an air pressure, the strength of which depends on the output of the compressed air generation unit, is generated.
- the modular particle discharge system according to the invention also comprises a particle conveyor.
- the particle conveyor is used to remove particles from the particle storage unit. direction of the modular particle discharge system.
- a particle conveying device has, as explained in more detail later, a device for transporting the particles, preferably a so-called particle conveying shaft, with which the particles are transported further to a position in the modular particle discharge system, at which they are discharged onto a relevant rail with the aid of the air flow already mentioned.
- the modular particle discharge system has a scattering device with which a particle-air stream is generated by directing the air stream onto the particles received from the particle conveying device, which is directed onto the rails in front of a wheel of the rail vehicle.
- the particle conveying device now has at least two individually switchable, parallel compressed air channels which connect the compressed air device with the scattering device in order to adjust the flow behavior of the air stream discharging the particles from the particle storage device.
- the idea underlying the modular particle discharge system according to the invention is to vary the flow behavior of the air flow discharging the particles from the particle storage device and thus the force exerted by the air flow on the particles to be scattered or discharged, not by selecting the strength of an air pressure applied to a blower or generated by a blower, but by selectively switching on one or more individually switchable compressed air channels through which the air from the blower of the compressed air device of the modular particle discharge system is pressed.
- the adjustment of the flow behavior of the air flow with which the particles are applied to the rails is preferably carried out in the particle conveyor device, A separate compressed air supply to the spreading device via separate and exposed compressed air lines or compressed air hoses is not necessary.
- the spreading device can therefore be easily dismantled from the particle conveyor, since no compressed air hoses have to be separated from the spreading device during dismantling. Any components contained in the spreading device, in particular nozzles, can therefore be easily replaced.
- different air consumption levels are achieved without integrating an additional compressed air control unit or additional solenoid valves. This reduces the installation space required for the implementation of different air consumption levels.
- the different air consumption levels can be achieved using standard pneumatic components. By using standard pneumatic components, the resource expenditure for the implementation of different air consumption levels is reduced compared to the conventional approach with an additional compressed air control unit. By internally implementing different air consumption levels, this arrangement is more robust and better protected against external harmful influences than conventional arrangements in which a compressed air control runs externally to the scattering device. An internal routing of the compressed air channels thus replaces an external compressed air control.
- a total of three air consumption levels can be achieved by alternatively using the first compressed air channel or the second compressed air channel and additionally by simultaneously using the two compressed air channels.
- the maximum will be is sufficient if all the compressed air channels arranged in parallel cause a different flow behavior of the compressed air generated by the compressed air device.
- the individual compressed air channels have different geometric properties, such as different cross-sections or different cross-sectional areas.
- the particle discharge system according to the invention is not limited to two parallel compressed air channels, but the number of parallel compressed air channels is selected depending on the existing requirement profile. For finer variation of the air consumption levels, more than two compressed air channels are recommended.
- the discharge force of the particle-air jet generated by the particle discharge system can be set to different values. Different air consumption levels are set in order to save compressed air if necessary, since the generation of compressed air requires energy and therefore incurs costs.
- the rail vehicle according to the invention has the modular particle discharge system according to the invention.
- the modular particle discharge system according to the invention is preferably arranged on the car body of the rail vehicle and positioned so that discharged particles hit a traveled rail in front of a wheel of the rail vehicle.
- the rail vehicle according to the invention shares the advantages of the modular particle discharge system according to the invention.
- an air flow with a defined air pressure is first generated in a compressed air device.
- the air flow can be generated with a blower.
- a flow behavior, for example an air flow strength, of the air flow in a particle conveyor device with at least two individually switchable parallel compressed air channels is set by selecting at least one of the parallel compressed air channels for the passage of the air flow.
- particles are conveyed from a particle storage device, preferably through a particle conveyor shaft of the particle conveyor device, to the scattering device.
- the particles are discharged from the scattering device, preferably by blowing the particles through the air stream, which is preferably supplied from a common compressed air line and/or nozzle connected downstream of the parallel compressed air channels.
- the method according to the invention for particle discharge shares the advantages of the modular particle discharge system according to the invention.
- the at least two individually switchable parallel compressed air channels of the particle conveyor device of the modular particle discharge system are integrated into the particle conveyor device.
- the feed function i.e. the function of feeding air and particles to the scattering device
- the scattering device can be separated from the modular particle discharge system in a particularly simple manner by connecting it only to the particle conveyor is separated. Additional supply lines or similar do not have to be dismantled, as all interfaces of the scattering unit exist only with the particle conveyor.
- the compressed air channels are also particularly well protected against external mechanical influences in comparison to freely running compressed air lines, as are often used conventionally.
- the particle conveying device particularly preferably has a particle conveying shaft which runs through the particle conveying device between the particle storage device and the scattering device.
- the individually switchable parallel compressed air channels preferably run parallel to the particle conveying shaft.
- the particle conveying shaft is designed to transport the particles stored in the particle storage device to the scattering device and there bring them into the effective range of the air flowing from at least one of the parallel compressed air channels in order to generate the aforementioned particle-air flow when the particles and the air flow come into contact with one another.
- a particle conveying shaft can, for example, be operated simply by using gravity, with the particles falling or being transported towards the scattering device in the direction of gravity.
- the particle conveyor shaft runs centrally through the particle conveyor device and the individually switchable parallel compressed air channels are arranged peripherally to the particle conveyor shaft.
- a central arrangement of the particle conveyor shaft enables a central arrangement of the scattering device below the particle conveyor device, whereby the particles transported to the scattering device by gravity can be brought into direct contact with the air flow flowing out of the compressed air channels.
- the flow behavior of the air flow comprises one of the following physical quantities:
- the volume flow indicates the amount of air flowing out of the air stream per unit of time. The higher the volume flow, the more particles can be removed from the spreading device per unit of time.
- the flow velocity of the air stream determines the speed of the particle-air stream.
- the pressure loss of the air flow within the compressed air ducts affects the total pressure of the air flow available in the spreading device for the particle-air flow. This value also influences the dynamic pressure and thus the flow velocity and volume flow of the air flow in the spreading device.
- the at least two individually switchable parallel compressed air channels of the particle conveyor device of the modular particle discharge system according to the invention preferably have a different, preferably location-dependent, flow cross-section.
- the flow cross-section influences the aforementioned relevant variables, in particular the flow velocity, but also the pressure loss and the volume flow achievable through a respective compressed air channel.
- the at least two individually switchable parallel compressed air channels of the particle conveying device of the modular particle discharge system according to the invention each have an outlet to the scattering device with different flow cross-sections.
- the dynamic pressure and thus the exit speed of the air flow exiting the compressed air duct can be controlled.
- the at least two individually switchable parallel compressed air channels have a different flow resistance.
- the flow resistance of an individual compressed air channel can be used to set a pressure drop in the compressed air channel in question.
- the flow resistance can be influenced by a certain surface finish on the inside of the compressed air channel or by a shape and/or dimensioning of the compressed air channel.
- the pressure drop affects the total pressure of the air flow available in the scattering device for the particle-air flow. This value also influences the dynamic pressure and thus the flow velocity and the volume flow.
- the parallel compressed air channels of the modular particle discharge system each comprise a flow element with a predetermined flow area in order to define a flow cross-section and thus, at a predetermined air pressure, an individual air quantity or volume flow for a respective compressed air channel.
- a respective flow element is arranged at the outlet of the respective compressed air channel. This influences the exit behavior of an air flow from the compressed air channels. Since the exiting air flow is used to generate a particle-air flow, a particularly strong effect is achieved by positioning the flow elements at the end of the compressed air channels.
- the flow element comprises a nozzle.
- the cross-section of the nozzle opening allows the Influence the amount of air flowing through the nozzle per unit of time. If the nozzle is designed as a diffuser, i.e. it narrows towards the end, the flow speed of the air or the dynamic pressure increases, but this reduces the static pressure. Conversely, the air flowing through a diffuser, which widens towards its end, is slowed down, thus reducing the dynamic pressure and increasing the static pressure.
- a nozzle is particularly effective when used at the outlet of the compressed air ducts for the reasons given in the previous paragraph.
- the modular particle discharge system according to the invention preferably has a housing which comprises the particle conveyor device.
- the housing serves in particular to protect the compressed air channels from external mechanical influences and to mount the scattering device on the housing.
- the compressed air channels are advantageously integrated into the particle conveyor device.
- the individual components i.e. the particle storage device, the particle conveyor device and the scattering device, can therefore be designed as separate, easily combinable block-like units.
- the particle discharge system according to the invention can thus largely be constructed in the form of several modules.
- a first module comprises the particle storage device
- a second module which is formed by the housing, comprises the particle conveyor device with at least two parallel compressed air channels with different flow cross-sections for setting an air flow strength and the third module is formed by the scattering device.
- the modular design makes it easy to replace individual components. adapt to individual and specific requirements.
- the scattering device of the modular particle discharge system has a mixing unit connected downstream of the parallel compressed air channels for generating a particle-air flow.
- the mixing unit comprises a a three-dimensional area, also referred to as a conveying chamber, in which the air flow from at least one of the parallel compressed air channels meets the particles from the particle conveying shaft of the particle conveying device, thus generating the particle-air flow which is then directed onto a rail to be traveled on.
- the scattering device has a particle feed device downstream of the mixing unit for discharging the particles.
- the particle feed device is tubular and enables the particle-air flow to be directed in a desired direction.
- the mixing unit of the scattering device of the modular particle discharge system according to the invention is particularly preferably designed as a mixing unit common to the two or at least two parallel compressed air channels.
- only one common mixing area needs to be designed for the at least two parallel compressed air channels.
- the at least two compressed air channels or their continuation are brought together in the scattering unit so that the air flow can be used to discharge the particles fed in via the particle conveyor shaft regardless of the choice of the compressed air channel currently being used in the scattering unit or the mixing unit included in the scattering unit.
- the scattering device is designed to be rotatable relative to a vertical axis.
- the scattering device is preferably designed to be rotatable by 90°.
- the particle flow generated by the modular particle conveyor system can advantageously be directed in different directions depending on the orientation of the scattering device.
- the "vertical axis” is to be understood as the axis of the modular particle discharge system according to the invention in the vertical direction when arranged as intended.
- the "vertical axis" Axis" can also be considered as the longitudinal axis of the modular particle discharge system.
- the scattering device comprises an annular collecting channel which is open “upwards”, i.e. in the direction of the compressed air channels of the particle conveying device, and thus has an open connection to the two compressed air channels regardless of the orientation of the scattering device.
- the annular collecting channel also comprises an outlet “downwards”, i.e. towards the other functional units of the scattering device, in particular towards the mixing unit of the scattering device.
- the collecting channel is preferably formed on the upper side, i.e. on the side of the scattering device facing the particle conveying device, and forms the interface or boundary surface between the scattering device and the particle conveying device.
- the collecting channel is designed due to its annular shape such that when the scattering device rotates about its longitudinal axis or... around its vertical axis, a connection between the spreading device and the outlets of the compressed air ducts is always maintained and so the flow of compressed air to the spreading device is always guaranteed regardless of its orientation.
- the annular design allows the formation of a particle conveyor shaft for feeding particles from the particle storage device, e.g. a sand reservoir, to the spreading device.
- This shaft can be arranged centrally to the annular collecting duct.
- the particle conveyor shaft penetrates a plane spanned by the annular collecting duct and ends at the level of the mixing unit of the spreading device. There, the particles conveyed via the shaft are blown out of the particle feed device of the spreading device by the compressed air conveyed via the collecting duct.
- the scattering device of the modular particle discharge system according to the invention has a a common compressed air duct downstream of the annular collecting duct with at least one nozzle for bundling the air flow flowing out of the annular collecting duct.
- This nozzle is used to channel and concentrate the compressed air jet in order to direct it onto the sand or particles being fed in.
- This nozzle is preferably positioned at the end between the outlet of the annular collecting channel and the mixing unit.
- the nozzle of the scattering device is particularly preferably oriented horizontally. If the direction of the particle feed device is also horizontal, the air flow exiting the nozzle already runs in the direction of the particle-air flow to be discharged, so that the particle-air flow does not have to be diverted for discharge from the scattering device. Losses, for example a reduction in the laminarity or flow rate of the particle-air flow due to a diversion of the particle-air flow, are advantageously avoided.
- the scattering device In order to divert the air, which usually flows vertically from the particle conveying device towards the scattering device, into a horizontal direction, the scattering device preferably comprises a diversion channel as a common compressed air channel, which enables the desired change in direction.
- this deflection channel can also comprise a second nozzle which, in contrast to the already mentioned nozzle at the outlet to the mixing unit, is preferably oriented not in the horizontal direction but in the vertical direction.
- the shape and flow cross-section of the nozzle of the scattering device at the outlet to the mixing unit are designed depending on the type of particle used.
- the nozzle can advantageously be adapted to individual requirements. For example, coarser particle types may require wider flow cross-sections, while finer particle types may benefit from narrower flow cross-sections.
- the nozzle at the outlet to the mixing unit of the scattering device is designed to channel and/or concentrate a particle jet.
- the air jet generated can advantageously be concentrated on an area in which particles are held and oriented in a direction in which a rail to be acted upon is located.
- the particle discharge system according to the invention preferably has pressure reducing valves on the parallel compressed air channels or in the area of the compressed air device for each of the two compressed air channels.
- the pressure reducing valves can be used to adjust the air pressure applied to the compressed air channels.
- the pressure reducing valves can provide an additional adjustment mechanism for the strength of the air flow generated by the particle discharge system.
- the compressed air device is provided with a pressure reducing valve for each of the at least two compressed air channels, this also enables selective control of one of the compressed air channels or a predetermined subset of the existing parallel compressed air channels.
- a large number of compressed air devices with different pressure, quantity or speed values of the air flow can advantageously be implemented.
- the compressed air device of the particle discharge system according to the invention can also have a check valve. which prevents air or a particle-air mixture from the compressed air ducts from being blown back towards the compressed air device.
- FIG 1 is a schematic representation of a conventional particle discharge system of a rail vehicle
- FIG 2 is a schematic side sectional view of a modular particle discharge system according to an embodiment of the invention.
- FIG 3 is a schematic front view of the arrangement shown in FIG 2,
- FIG 4 is a schematic perspective view of the arrangement shown in FIG 2 and FIG 3,
- FIG 5 is a schematic representation of a modular particle discharge system according to an embodiment of the invention.
- FIG 6 a rail vehicle according to an embodiment of the invention
- FIG. 7 is a flow chart illustrating a method for particle removal according to an embodiment of the invention.
- FIG. 1 shows a schematic representation of a conventional particle discharge system 10 of a rail vehicle (not shown).
- the particle discharge system 10 comprises a particle storage device 1, which can be designed, for example, as a sandbox for storing sand as particles to be scattered.
- the particle storage device 1 is shown in the upper part of FIG. 1.
- Part of the particle discharge system 10 is also a compressed air device 2, with which, for example with the aid of a blower, compressed air or an air stream is generated, which is required to produce a particle-air mixture together with the particles of the particle storage device 1, which is directed in the form of a particle-air stream onto a rail on which a rail vehicle is to travel.
- a compressed air device 2 with which, for example with the aid of a blower, compressed air or an air stream is generated, which is required to produce a particle-air mixture together with the particles of the particle storage device 1, which is directed in the form of a particle-air stream onto a rail on which a rail vehicle is to travel.
- the particle discharge system 10 comprises a particle conveyor 3, which is shown in the center of FIG. 1. With this particle conveyor 3, the particles stored in the particle storage device 1 are transported to a scattering device 4, which is also part of the particle discharge system 10 and is shown at the bottom of the image in FIG. 1.
- the particle conveyor 3 comprises a particle conveyor shaft 3b, through which the particles stored in the particle storage device 1 move towards the scattering device 4 following gravity.
- the particle conveyor 3 also comprises a dosing unit 3a, which is arranged between the particle storage device 1 and the particle conveyor shaft 3b of the particle conveyor 3, and also has a type of valve function in order to allow the particles stored in the particle storage device 1 to fall into the particle conveyor shaft 3b when required.
- An air flow generated by the compressed air device 2 (shown on the right in the picture) is also fed to the spreading device 4 via a compressed air line 5.
- a solenoid valve 6 is used to separate the compressed air line 5 from the spreading device 4 or to release the compressed air for the spreading device 4 .
- the previously mentioned spreading device 4 comprises a mixing unit 8 (outlined in dashed lines) which comprises a nozzle 7 which bundles and channels the compressed air supplied via the compressed air line 5. Also part of the mixing unit 8 is a feed device 9 which connects the lower region of the particle conveyor shaft 3b with a mixing region of the mixing unit 8. If particles fall into this mixing region via the feed device 9, they are blown by the air stream emerging from the nozzle 7 in the direction of the arrow, i.e. to the left in FIG. 1, out of a particle feed device 11 which forms the exit from the spreading device 4, in the direction of a wheel-rail gap in order to come to rest on a rail (not shown) and in this way improve the traction of the rail vehicle.
- a mixing unit 8 outlined in dashed lines
- a feed device 9 which connects the lower region of the particle conveyor shaft 3b with a mixing region of the mixing unit 8. If particles fall into this mixing region via the feed device 9, they are blown by the air stream emerging from the nozzle 7 in the direction of the
- the particle discharge system 10 is usually attached directly to the car body of the rail vehicle (not shown).
- the particle storage device 1 is mounted on the car body.
- the compressed air device 2 is often arranged in the rail vehicle, with the compressed air line 5 transporting the compressed air generated in the compressed air device 2 to the scattering device 4 of the particle discharge system 10.
- the scattering device 4 is firmly connected to the particle storage device 1 via the particle conveyor device 3 and is positioned hanging in front of a wheel set in order to apply the particle-air mixture in the wheel-rail gap of the front wheel of the wheel set.
- FIG. 2 shows a schematic side sectional view of a modular particle discharge system 20 according to an embodiment of the invention.
- the modular particle discharge system 20 comprises, analogously to the conventional particle discharge system 10 already shown in FIG. 1, a particle storage device 1, a compressed air device 2, a particle conveying device 23 with a dosing unit 3a, which is arranged between the particle storage device 1 and a particle conveying shaft 3b, which is also part of the particle conveying device 23, and a compressed air line 5 from the compressed air device 2 to respective compressed air connections 21a, 21b of the particle conveying device 23.
- the mentioned particle conveyor device 23 and the mentioned scattering device 24 differ considerably in terms of their construction from the particle conveyor device 3 and the scattering device 4 of the conventional particle discharge system 10.
- the particle conveyor device 23 comprises a first compressed air connection 21a and a second compressed air connection 21b (see FIG. 3), the latter being hidden in the side view of FIG. 2 and therefore not visible.
- the two compressed air connections 21a, 21b have a rectangular geometry with regard to the course of their central longitudinal axis. This geometry can be seen in particular in the perspective view in FIG. 4.
- the particle conveyor 23 also comprises a first compressed air channel 23a and a second compressed air channel 23b parallel thereto (see FIG. 3).
- the first compressed air channel 23a is connected to the first compressed air connection 21a and the second compressed air channel 23b is connected to the second compressed air connection 21b.
- the two compressed air channels 23a, 23b run vertically through the particle conveyor 23 and open into an annular collecting channel 26 which, however, is already part of the scattering device 24 to be described later.
- the particle conveyor 23 is housed in a housing G which is firmly attached to a rail vehicle (not shown) via the particle storage device 1.
- the housing G is shown as a cuboid outline in FIG. 2.
- the already mentioned scattering device 24 is also part of the modular particle discharge system 20.
- the scattering device 24 is arranged below the front section of the housing G of the particle conveyor device 23 and is mounted on the housing G so as to be rotatable about a vertical axis.
- the scattering device 24 comprises the also already mentioned annular collecting channel 26.
- the annular collecting channel 26 is open to the outlets 23c, 23d (see FIG. 3) of the two compressed air channels 23a, 23b and itself has an outlet 26a to a compressed air channel, in this embodiment a deflection channel 25, which is also part of the scattering device 4.
- the deflection channel 25 comprises a nozzle 7 which is oriented in a horizontal direction.
- the nozzle 7 opens into a mixing area or a mixing unit 8 (marked with dashed lines), which also forms the inlet area for the particles to be scattered, and channels and concentrates the air flow brought about via the deflection channel 25 so that it is directed at the particles to be scattered.
- Part of the scattering device 24 is also a feed device 9, which feeds the particles falling through the particle conveyor shaft 3b of the particle conveyor device 23 to the mixing unit 8.
- Part of the scattering device 24 is also a particle feed device 11, which directs the particle-air flow (not shown) generated by the air flow of the nozzle 7 onto a track or a gap between the wheel and the rail.
- the scattering device 24 can be rotated about a vertical axis in order to change the scattering direction 24 of the particles to be scattered.
- the collecting channel 26 Due to the annular arrangement of the collecting channel 26, it remains in connection with the outlets 23c, 23d of the two compressed air channels 23a, 23b regardless of the orientation of the scattering device 24, so that in any position of the scattering device 24, air can flow through the particle conveying device 23 to the scattering device 24 and a particle-air flow can be maintained.
- FIG 3 shows a schematic front view of the section of a modular part according to the invention shown in FIG 2.
- particle discharge system 20 is shown.
- the modular particle discharge system 20 comprises the units already mentioned in connection with FIG. 2 of a compressed air device 2, a particle conveyor device 23 and a scattering device 24.
- the first and second compressed air connections 21a, 21b already shown in FIG. 2 are part of the particle conveyor device 23.
- the particle conveyor device 23 also comprises the two parallel compressed air channels 23a, 23b.
- the scattering device 24 also shown in FIG 2 and shown in the picture below, which comprises the annular collecting channel 26, also shown in FIG 2, as well as the deflection channel 25 with the nozzle 7 and the particle feed device 11, through which a particle-air jet is directed onto a rail.
- the lower ends or outlets 23c, 23d of the two parallel compressed air channels 23a, 23b contact the annular collecting channel 6.
- the lower outlet 26a of the collecting channel 26 redirects the air jet to the aforementioned deflection channel 25 in the scattering device 24.
- the deflection channel 25 initially runs vertically and guides the air jet downwards to the height of the nozzle 7, which can be seen in the center of the scattering device 24 in FIG 3.
- the deflection channel 25 bends vertically in the horizontal direction and runs as far as the nozzle 7.
- the nozzle 7 is open to the previously mentioned mixing unit 8 (see FIG. 2) at the lower end of the particle conveyor shaft 3b or its continuation, the feed device 9.
- the particle conveyor shaft 3b which runs vertically and centered through the particle conveyor device 23 and the scattering device 24, particles, or in particular sand, are held which are blown from the nozzle 7 and leave the scattering device 24 through the particle feed device 11 outlined with a hexagon.
- FIG 4 shows a schematic perspective view of the
- FIG 2 and FIG 3 show the modular particle discharge system 20 according to the invention.
- FIG 4 only the Particle conveying device and the scattering device of the modular particle discharge system 20 are shown.
- FIG 4 the ring-shaped form of the collecting channel 26 can be seen in particular. Furthermore, the angled shape of one of the two compressed air connections 21a, 21b can be seen in the foreground.
- a compressed air line 5 is connected to each of the compressed air connections 21a, 21b (not shown in FIG 4, see FIG 2, FIG 3), which in turn are connected to the compressed air device 2 (not shown in FIG 4, see FIG 2, FIG 3).
- FIG 5 shows a front view of a modular particle discharge system 20 according to an embodiment of the invention.
- the compressed air device 2 comprises a compressed air generator 2a, for example a blower, which generates an air flow.
- the air flow is guided through a filter 19, in this embodiment a high-pressure filter.
- the filter 19 filters out particles that may have been sucked in by the blower in order to avoid damage or wear to the downstream components of the compressed air device 2 and the downstream particle conveyor device 23.
- a check valve 18 is connected to the filter 19.
- the check valve 18 is connected to a first and a second 3/2-way valve 17a, 17b, which are connected upstream of two separate air paths, each of which is in the first and second compressed air connections 21a, 21b of the particle conveyor device 23.
- the check valve 18 prevents air or a particle-air mixture from flowing back to the filter 19 and the blower.
- the two 3/2-way valves 17a, 17b enable individual activation or use of one of the two air paths, which are formed by the two compressed air lines 5 and the downstream compressed air channels 23a, 23b (not shown in FIG. 5, see FIG. 4), or activation of both air paths together.
- the scattering device 24 can also be seen in the lowest section of the image with the particle feed device 11.
- FIG. 6 shows a rail vehicle 60 according to an embodiment of the invention.
- the rail vehicle 60 comprises the modular particle discharge system 20 shown in FIG. 2 to FIG. 4.
- the modular particle discharge system 20 discharges sand S onto a rail SC on which the rail vehicle 60 travels.
- FIG. 7 shows a flow chart 700 which illustrates a method for particle removal according to an embodiment of the invention.
- step 7.1 an air flow with a defined air pressure is generated in a compressed air device 2 of a modular particle discharge system 20.
- step 7.II the flow behavior of the air flow in a particle conveyor device 23 of the modular particle discharge system 20 is determined.
- the particle conveyor device 23 has two individually switchable parallel compressed air channels 23a, 23b, whose flow resistance and/or cross-section are designed differently.
- the flow behavior of the air flow is determined by selecting one of the two parallel compressed air channels 23a, 23b for the passage of the air flow to a scattering device 24 of the modular particle discharge system 20.
- particles for example sand S, are conveyed from a particle storage device 1 of the modular particle discharge system 20 through the particle conveying device 23 to the scattering device 24.
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Abstract
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023200069.5A DE102023200069A1 (de) | 2023-01-05 | 2023-01-05 | Modulares Partikelaustragungssystem |
| PCT/EP2023/084051 WO2024146721A1 (de) | 2023-01-05 | 2023-12-04 | Modulares partikelaustragungssystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4615737A1 true EP4615737A1 (de) | 2025-09-17 |
Family
ID=89322103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23828348.5A Pending EP4615737A1 (de) | 2023-01-05 | 2023-12-04 | Modulares partikelaustragungssystem |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4615737A1 (de) |
| DE (1) | DE102023200069A1 (de) |
| WO (1) | WO2024146721A1 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU887317A1 (ru) * | 1979-12-17 | 1981-12-07 | Рижский Ордена Трудового Красного Знамени Вагоностроительный Завод | Устройство дл подачи песка под колеса рельсового транспортного средства |
| DE102004014360B4 (de) * | 2004-03-24 | 2010-05-20 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Sandungseinrichtung für Schienenfahrzeuge |
| AT11077U1 (de) | 2009-03-30 | 2010-04-15 | Mbm Holding Gmbh | Sandungssystem für schienenfahrzeuge mit schaltbarer sandbarriere |
| CN103068662B (zh) * | 2010-08-09 | 2016-11-09 | 通用电气公司 | 牵引力系统和方法 |
| CN202508088U (zh) * | 2011-12-06 | 2012-10-31 | 唐山轨道客车有限责任公司 | 撒砂量控制装置 |
| CZ24925U1 (cs) * | 2012-11-02 | 2013-02-11 | Tribotec, Spol. S R.O. | Pískovací ústrojí pro pfskovací zařízení kolejových vozidel |
| AU2014213554A1 (en) * | 2013-08-15 | 2015-03-05 | General Electric Company | Adhesion control system and method |
| DE102016217982B4 (de) | 2016-09-20 | 2018-05-03 | Siemens Aktiengesellschaft | Sandtreppe für eine Sandstreuanlage eines Schienenfahrzeugs, Sandstreuanlage sowie Schienenfahrzeug |
-
2023
- 2023-01-05 DE DE102023200069.5A patent/DE102023200069A1/de active Pending
- 2023-12-04 WO PCT/EP2023/084051 patent/WO2024146721A1/de not_active Ceased
- 2023-12-04 EP EP23828348.5A patent/EP4615737A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102023200069A1 (de) | 2024-07-11 |
| WO2024146721A1 (de) | 2024-07-11 |
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