Liquid separation device for a compressor system and compressor system with such a liquid separation device

Abstract

The invention relates to a liquid separation device (20) for a compressor system (1), comprising: at least one crude separation unit (21) having at least one crude separator (21a) and a liquid removal device (21b); at least one fine separation unit (22) having at least one fine separator (22a) and a liquid extraction device (22b); and at least one liquid removal channel (21c, 22c) which discharges liquid from the respective liquid removal device (21b, 22b), the at least one liquid removal channel (21c, 22c) being formed in the liquid separation device (20).

Description

Technical Field

[0001] The invention relates to a liquid separation device for a compressor system and a compressor system having such a liquid separation device. Background Art

[0002] In oil-lubricated compressors, such as oil-lubricated screw compressors, the oil used for lubrication and cooling is separated after the compression process by a suitable oil separation device so as not to enter the compressed air system located downstream. The separated oil is then fed back to the compressor, for example the screw block in an oil-lubricated screw compressor.

[0003] In the configuration of such compressor systems known from the prior art, the compressed oil-gas volume flow in an oil-lubricated screw compressor impinges on a coalescing filter, the oil separated on its clean side being drawn off by a pressure drop toward the injection start on the screw block. In this case, the oil separator forms an integral component of the compressor housing and is directly integrated therein. The return to the screw block is achieved via an external return line which must surround the compressor housing. This external return line not only requires corresponding installation space but also has to be removed in the event of maintenance.

[0004] In order to prevent oil from flowing back into the coalescing filter when the compressor is switched off, a non-return valve is arranged in the return line. Furthermore, an additional nozzle must be installed in the return line in order to limit the air loss of the compressor, since on the clean side of the coalescing filter there is mainly air and only a small amount of oil in comparison. Since the non-return valve and the nozzle are arranged in the external return line, they are exposed to the corresponding ambient temperature, so that, for example, at low temperatures there is a risk of freezing of the non-return valve and / or the nozzle.

[0005] Furthermore, in this case, the extraction of the oil on the clean air side of the coalescing filter must be achieved via an additional riser pipe. Due to this arrangement, there is a risk of a continuous air leakage flow. In addition, residual oil may remain below the submerged pipe and could enter the compressed air system. Summary of the invention

[0006] In view of the above, the object of the present invention is therefore to provide a liquid separation device which is improved compared to the prior art, in particular with regard to liquid return losses which are as low as possible, is economical and process-reliable.

[0007] This object is achieved by the subject matter of the independent claim. Advantageous developments are the subject matter of the dependent claims.

[0008] According to the present invention, a liquid separation device for a compressor system comprises: at least one coarse separation unit having at least one coarse separator and a liquid extraction device; at least one fine separation unit having at least one fine separator and a liquid extraction device; and at least one liquid extraction channel for discharging liquid from the corresponding liquid extraction device. The at least one liquid extraction channel is constructed in the liquid separation device.

[0009] The liquid separation device is used to separate liquid from a liquid-gas volume flow of a compressor system. For example, a liquid separation device located downstream of an oil-lubricated compressor (such as an oil-lubricated screw compressor) in the volume flow direction can separate oil from the oil-gas volume flow.

[0010] The liquid separation device is in this case an oil separation device which separates oil from the compressed compressed air. However, as an alternative, other liquids can also be separated, for example liquids which are used to cool and / or lubricate the compressor. Gases which are different from air can also be compressed by the compressor.

[0011] Here, the liquid separation device is configured as a multi-stage liquid separation device, which includes at least one coarse separation unit and one fine separation unit, i.e., at least two stages. The multi-stage structural design of the liquid separation device can, for example, improve the separation degree. Similarly, the multi-stage structural design will also have a positive impact on the service life of each separator used, especially the fine separator.

[0012] In the rough separation unit, for example, a baffle can be used as a rough separator, and the liquid-gas volume flow introduced into the rough separation unit is first diverted to the baffle at a higher speed. Other embodiments of the rough separator include, for example, a cyclone separator or a knitted fabric, such as a wire mesh. Then the liquid-gas volume flow from which the liquid has been separated in the rough separation unit can be further introduced into the fine separation unit. The fine separation unit, for example, has a coalescing filter as a fine separator, which separates the liquid again on the outlet side of its liquid-gas volume flow. However, in the sense of multi-stage separation, the rough separation unit and the fine separation unit do not necessarily have to be different in the type of the corresponding rough separator and the fine separator. For example, multi-stage separation can also have a plurality of separation units with the same or at least similar structures, wherein the term rough separation unit then means that a larger amount of liquid is contained in the liquid-gas volume flow compared to the fine separation unit. Therefore, each separation unit is connected in series, wherein the proportion of the amount of liquid in the liquid-gas volume flow decreases successively, i.e., decreases from the rough separation unit to the fine separation unit. At least one liquid removal device is provided in each of the coarse separation unit and the fine separation unit. The liquid removal device is arranged along the dripping direction associated with the corresponding separator and is used to collect the separated liquid.

[0013] In order to discharge the liquid accumulated in the corresponding liquid removal device, at least one liquid removal channel is provided, which extends from the corresponding liquid removal device along at least one first discharge direction. This first discharge direction can, for example, point downward in the direction of gravity so that the liquid can first be reliably discharged under the action of gravity. The further course of the corresponding liquid removal channel can then deviate from the first discharge direction. The at least one liquid removal channel can be configured as a return channel, which guides the separated liquid back into a liquid storage tank for further use and / or treatment. For example, in this way, the separated oil can be re-delivered to the screw block of an oil-lubricated screw compressor.

[0014] Here, the at least one liquid removal channel is constructed in the liquid separation device, so that the liquid is guided within the liquid separation device. In this way, a compact structure can be achieved by internal liquid guidance, since external liquid pipelines can be omitted at least in the area of ​​the liquid separation device. Here, the at least one liquid removal channel is also protected by the liquid separation device from external influences. Similarly, components arranged in the at least one liquid removal channel (such as the backflow prevention device and / or the nozzle to be described below) can be protected in this way to avoid freezing, for example. In addition, the workload in maintenance situations can be reduced, because it is not necessary or only necessary to disassemble fewer external pipelines before maintenance.

[0015] In one embodiment, the at least one liquid removal channel is formed by the housing of the liquid separating device.

[0016] Thus, the at least one liquid removal channel can be formed directly when manufacturing the liquid separation device housing. For example, the at least one liquid removal channel can be taken into account when manufacturing the liquid separation device housing as a casting. As an alternative or supplement, the at least one liquid removal channel can be formed by drilling.

[0017] As an alternative or in addition, at least part of the at least one liquid removal channel can also be formed in the liquid separation device by at least one separate liquid removal channel line.

[0018] In one embodiment, the at least one liquid removal channel is designed at least such that it has at least two channel sections, at least one channel section of which is fluidically connected to the liquid removal device of the coarse separation unit and at least one other channel section is fluidically connected to the liquid removal device of the fine separation unit.

[0019] According to this construction, the liquid separated from the coarse separation unit and the fine separation unit is collected into one liquid removal channel through the channel section.

[0020] As an alternative, the liquid separation device has at least two liquid removal channels, at least one of which is fluidically connected to the liquid removal device of the coarse separation unit and at least one other liquid removal channel is fluidically connected to the liquid removal device of the fine separation unit.

[0021] Therefore, a separate liquid removal channel is provided for the coarse separation unit and the fine separation unit, respectively.

[0022] In a particularly advantageous design, at least one backflow prevention device is arranged in each of the at least two channel sections or in each of the at least two liquid removal channels. Here, the backflow prevention device is configured to prevent backflow from the at least two channel sections or the at least two liquid channels to the liquid removal devices respectively connected thereto.

[0023] The backflow prevention device can be designed as a non-return valve, for example.

[0024] According to one development, the at least one backflow prevention device is arranged in each of the at least two channel sections or in each of the at least two liquid removal channels. Here, the backflow prevention device that can be assigned to one of the at least two channel sections or one of the at least two liquid removal channels has a different response characteristic than the backflow prevention device that can be assigned to another of the at least two channel sections or another of the at least two liquid removal channels.

[0025] For example, different pressure ratios may exist in the coarse separation unit and the fine separation unit, respectively. By using at least one backflow prevention device in the liquid removal channel or channel section that can be respectively configured to the liquid removal device of the coarse separation unit and the liquid removal device of the fine separation unit, the corresponding backflow prevention device can be adapted to the respectively existing pressure ratio. As an alternative, the corresponding backflow prevention devices of the coarse separation unit and the fine separation unit, such as corresponding check valves, can also be constructed to be the same. Therefore, the number of different parts to be assembled can be reduced and the risk of installation errors can be reduced.

[0026] In one embodiment, at least one nozzle is arranged in the at least one liquid removal channel or is formed at least in sections by the liquid channel.

[0027] Since it is possible to discharge not only the separated liquid but also gas from the respective separation unit through the at least one liquid removal channel, corresponding gas losses may result, which reduces the efficiency of the compressor system. The liquid volume flow or liquid-gas volume flow, which may still contain gas, can be throttled by the nozzle, so that gas losses can be reduced. This applies in particular to liquid removal channels or channel sections leading out of the liquid removal device of the fine separation unit, since only a small amount of liquid is separated here compared to the gas.

[0028] The nozzle can be installed as a separate component in the at least one liquid removal channel. As an alternative or in addition, the cross section of the at least one liquid channel can also be at least partially adjusted so that a corresponding throttling is achieved via such a section. Thus, the nozzle or the nozzle function is formed directly via the at least one liquid removal channel.

[0029] In particular, in an advantageous design, the at least one nozzle is arranged in each of the at least two channel sections or in each of the at least two liquid removal channels, as described above. Here, the nozzle assignable to one of the at least two channel sections or one of the at least two liquid removal channels has a different cross section than the nozzle assignable to another of the at least two channel sections or another of the at least two liquid removal channels.

[0030] Similar to the advantages of using at least one backflow prevention device in the liquid removal channels or channel sections that can be respectively assigned to the coarse separation unit and the fine separation unit, different pressure ratios in the coarse separation unit and the fine separation unit can be taken into account by means of the nozzles configured in the same manner. In other words, the corresponding nozzles can be adapted to the existing pressure ratios.

[0031] In the case of using at least one backflow prevention device and at least one nozzle in the liquid extraction channel or channel section, the backflow prevention device is preferably arranged before the nozzle in the liquid discharge direction. In particular, the at least one backflow prevention device is arranged near the liquid extraction device that can be respectively configured to it.

[0032] In one embodiment, the backflow prevention device and / or the nozzle is configured to be screwable into the at least one liquid removal channel.

[0033] Therefore, prevent that backflow device and / or nozzle can be reliably installed in described at least one liquid taking-out channel in a simple manner.In addition, can make replacement simple in this way, for example when breaking down or when changing performance.

[0034] In summary, the aforementioned arrangement or construction design of the corresponding backflow prevention device and / or nozzle enables reliable and simple integration into the at least one liquid removal channel. In addition, corresponding separation units with different pressure levels can be reliably pumped. Due to the use of corresponding backflow prevention devices and / or nozzles for the coarse separation unit and the fine separation unit, for example, bypassing and the inflow of liquid from the coarse separation unit to the clean side of the fine separator can be prevented or at least reduced.

[0035] In one embodiment, the backflow prevention device and the nozzle for the respective separating unit are formed by a common flow control device, in particular by a common flow control element.

[0036] The flow control device can be configured accordingly as a preassembled group with the backflow prevention device and the nozzle as corresponding separate components. Then, in this preassembled group, for example, the spacing between the backflow prevention device and the nozzle can be set and checked in advance. In addition, the separate installation including the corresponding inspection when necessary can be omitted, which can reduce the installation workload. However, the flow control device can also have a common flow control element, or be configured as such a flow control element, so that the functionality of the backflow prevention device and the nozzle is formed in a common component. Therefore, the backflow prevention device can be integrally formed with the nozzle in the flow control element.

[0037] In one construction design, the at least one liquid removal device of the coarse separation unit and / or the at least one liquid removal device of the fine separation unit is arranged below the respectively associated separator in a suitable installation position of the liquid separation device, in particular in a flow-smoothing area of ​​the corresponding separation unit.

[0038] In other words, the at least one liquid extraction device of the coarse separation unit and / or the at least one liquid extraction device of the fine separation unit are arranged in the corresponding separation unit so that the liquid separated at the corresponding separator directly drips or flows into the corresponding liquid extraction device. Therefore, it is at least possible to prevent the liquid separated at the corresponding separator from accumulating in a place where it cannot be discharged.

[0039] Furthermore, since the at least one liquid extraction device of the rough separation unit and / or the at least one liquid extraction device of the fine separation unit is arranged in the flow-smooth region of the corresponding separation unit, entrainment of oil in the gas flow can also be avoided.

[0040] In one construction design, the at least one liquid extraction device of the coarse separation unit and / or the at least one liquid extraction device of the fine separation unit has a liquid outlet leading to the at least one liquid extraction channel, which is located at the lowest point of the at least one liquid extraction device of the coarse separation unit and / or the at least one liquid extraction device of the fine separation unit in an installation position suitable for use of the liquid separation device.

[0041] The separated liquid is thus sucked off at the lowest point of the at least one liquid removal device of the respective separation unit. A standpipe can thus be omitted. This can increase process safety during maintenance, since, for example, the standpipe can be prevented from bending due to collisions with other tools. Since standpipes are usually geometrically designed to be pointed, the absence of a standpipe can also reduce the risk of damage. Furthermore, efficiency can be increased, since a state in which only air is sucked off as long as possible can be avoided as soon as the oil level drops below the edge of the suction bottom.

[0042] Furthermore, the separated liquid can be completely pumped out, so that a flow of liquid into other system areas can be avoided.

[0043] In one embodiment, the at least one liquid removal device of the coarse separation unit and / or the at least one liquid removal device of the fine separation unit is designed as a detachable cover for fastening to a housing of the liquid separation device.

[0044] Thus, for example, for maintenance purposes and corresponding accessibility of the coarse separation unit and / or the fine separation unit, the at least one liquid removal device of the coarse separation unit and / or the at least one liquid removal device of the fine separation unit can be removed in a simple manner without having to previously dismantle the return line. Since the liquid removal channel adjacent to the corresponding liquid removal device is formed by the housing of the liquid separation device, no additional bridge parts need to be taken into account when removing the corresponding cover. Here, the corresponding cover can, for example, be screwed into the housing, screwed onto the housing and / or removably fastened to or in the housing in a form-locking and / or force-locking manner in another way. Therefore, the liquid outlet from the cover directly enters the liquid removal channel of the housing of the liquid separation device, so that the removal of the cover disconnects the fluid return flow and the liquid return flow is reconnected when the cover is assembled again.

[0045] To ensure that the respective liquid outlet of the respective cover coincides with the respectively configurable liquid channel, the final installation position can be set by screwing the cover onto a stop, a corresponding drilling pattern or aligning markings on the cover and the housing.

[0046] For fluid-tightness between the cover (and in principle the liquid removal device or the liquid outlet) and the corresponding liquid removal channel, a seal, such as an O-ring, can be provided on the liquid outlet and / or the liquid removal channel facing the liquid outlet, which seals the area between the liquid outlet and the liquid removal channel in a fluid-tight manner. Leakage can thus be prevented.

[0047] In one embodiment, the at least one liquid removal channel is designed as a branch line or a ring line.

[0048] The branch line can be realized simply by a drill hole and can realize short distances. As an alternative, the at least one liquid removal channel can be designed as an annular line, for example in order to bridge longer distances. However, the at least one liquid removal channel can also consist of a branch line section and an annular line section and optionally other forms of further line sections.

[0049] According to another aspect, the present invention also relates to a compressor system, which comprises a compressor and the aforementioned liquid separation device, wherein the liquid separation device is arranged outside the compressor housing.

[0050] The liquid separation device is therefore an external liquid separation device for the compressor. The liquid separation device therefore has its own external housing, in which the at least one liquid removal channel is integrated. The liquid thus flows back from the corresponding separation unit to the compressor or another discharge destination via the at least one liquid removal channel in the housing of the liquid removal device. In this case, the at least one liquid removal channel is in particular formed by the housing wall.

[0051] In one embodiment, an arrangement is provided in which the compressor housing adjoins the liquid separation device housing. In particular, the at least one liquid removal channel adjoins the suction channel of the compressor.

[0052] Therefore, the outlet of the at least one liquid removal channel can be directly connected to the corresponding inlet of the compressor without having to provide an additional external pipeline for this purpose. As an alternative, since the fluid separation device is located close to the compressor, a very short return line can be used to bridge the distance from the housing of the liquid separation device to the compressor housing. This can improve the compactness of the compressor and reduce maintenance costs by reducing the number of components. In addition, further protection measures for the external pipelines can be omitted or reduced to a small number of pipelines.

[0053] The features mentioned in the above description of the fluid separation device are also applicable to the compressor system. Likewise, the features of the fluid separation device described for the compressor system can also be transferred to the fluid separation device, as long as they have not yet been described.

[0054] According to a further aspect, the invention also relates to a rail vehicle comprising the above-described fluid separation device and / or the above-described compressor system.

[0055] The fluid separation device or compressor system can achieve a low-loss, economical and process-reliable fluid return, which is also reliable even in demanding use cases in rail vehicles. In addition, the requirement for high availability of rail vehicles is also supported by increasing the ease of maintenance.

[0056] The features mentioned in the description of the fluid separation device and the compressor system above are also applicable to rail vehicles. Likewise, the features of the fluid separation device and the compressor system described for rail vehicles can also be transferred to the fluid separation device and the compressor system, as long as they are not yet described. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The exemplary embodiments of the present invention are described below with reference to the accompanying drawings, which show in detail:

[0058] Figure 1 is a schematic diagram of an exemplary embodiment of a compressor system according to the present invention. DETAILED DESCRIPTION

[0059] Figure 1 A schematic diagram of an exemplary embodiment of a compressor system 1 according to the present invention is shown. The compressor system 1 includes a compressor 10 with a housing 10a and a liquid separation device 20 with a housing 20a. The housing 10a of the compressor is directly adjacent to the housing 20a of the liquid separation device 20. The compressor system 1 can also be referred to as a compressor system with a compressor and an external liquid separation device in the current configuration. In this exemplary embodiment, the compressor 10 is an oil-lubricated screw compressor for generating compressed air. Therefore, the liquid separation device 20 here is an oil separation device. In an alternative embodiment, the medium to be compressed can also be a gas different from air, and the liquid is not limited to oil for lubrication and / or cooling.

[0060] The liquid separation device 20 includes a rough separation unit 21 with a rough separator 21a and a fine separation unit 22 with a fine separator 22a. For example, the rough separator 21a is designed as a baffle, and the fine separator 22a is designed as a coalescing filter. In each separation unit 21, 22, a liquid extraction device 21b, 22b is arranged below the corresponding separator 21a, 22a in the dripping direction of the separated liquid. A corresponding liquid extraction channel 21c, 22c extends from the deepest part of the liquid extraction device 21b of the rough separation unit 21 and the liquid extraction device 22b of the fine separation unit 22 in the dripping direction. The liquid extraction channel 21c of the rough separation unit 21 discharges the separated liquid that has accumulated in the liquid extraction device 21b of the rough separation unit 21 so as to provide it to the compressor 10 again. Similarly, the fine separation unit 22 achieves this through the liquid extraction channel 22c of the fine separation unit 22. The collection and discharge of the separated liquid are respectively realized in a smooth flow area, thereby avoiding the liquid entrainment of the already accumulated liquid due to the flow in the corresponding separation unit 21, 22. The corresponding liquid removal devices 21b and 22b are configured as covers / bottom covers of the corresponding separation units 21, 22 here, which are detachably fastened to the housing 20a. For maintenance purposes, the corresponding connection can be loosened. Since the corresponding liquid outlets of the liquid removal devices 21b and 22b are adjacent to the corresponding liquid removal channels 21c and 22c formed in the housing 20a, the corresponding separation units 21, 22 can be opened without disassembling other bypass lines.

[0061] The liquid extraction channel 21c of the rough separation unit 21 has a check valve 21d as a backflow prevention device on its end facing the liquid extraction device 21b, and the check valve 21d prevents liquid from flowing back from the liquid extraction channel 21c into the liquid extraction device 21b. In addition, in the further path downstream from the liquid extraction device 21b, a nozzle 21e is also provided in the liquid extraction channel 21c. Through the nozzle 21e, the liquid volume flow or liquid-gas volume flow that may still contain gas can be throttled, so that gas loss can be reduced. The liquid extraction channel 21c is directly formed in the housing 20a of the fluid separation device 20 here. Here, this formation is achieved by designing a corresponding casting as the housing 20a. In addition, the design of the liquid extraction channel 21c is also provided with a threaded section in the area of ​​the check valve 21d and the nozzle 21e, so that the check valve 21d and the nozzle 21e can be screwed into the liquid extraction channel 21c. Further downstream of the nozzle 21e, the separated liquid is fed directly back to the compressor 10, here to the screw block of the screw compressor, via another section (not shown) of the liquid removal channel 21c. The return is achieved in the housing 10a, 20a, so that additional external lines can be omitted.

[0062] The structure of the liquid extraction channel 22c of the fine separation unit or the arrangement of the check valve 22d used as a backflow prevention device and the arrangement of the nozzle 22e for throttling are similar to the above description of the liquid extraction channel 21c of the rough separation unit 21. However, since the pressure levels existing in the rough separation unit 21 and the fine separation unit 22 are different, which ensure different pressure ratios when the separated liquid is sucked from the corresponding liquid extraction devices 21b, 22b through the corresponding liquid extraction channels 21c, 22c, the corresponding check valves 21d, 22d and nozzles 21e, 22e are also different from each other. In other words, the check valve 21d and the nozzle 21e to be configured for the rough separation unit 21 are adapted to the pressure level existing in the rough separation unit 21 and the pressure ratio resulting therefrom. On the contrary, the check valve 22d and the nozzle 22e to be configured for the fine separation unit 22 are adapted to the pressure level existing in the fine separation unit 22 and the pressure ratio resulting therefrom.

[0063] Here, during operation of the compressor system 1, Figure 1The compressed oil-gas volume flow indicated by the black arrow in FIG. 1 is introduced into the coarse separation unit 21 relative to the oil-lubricated screw compressor as the compressor 10. There, the compressed oil-gas volume flow hits the baffle plate as the coarse separator 21a, so that the first part of the oil is separated from the oil-gas volume flow at the coarse separator 21a and drips into the liquid removal device 21b located below. The oil collected in the liquid removal device 21b of the coarse separation unit 21 is drawn off through the liquid removal channel 21c of the coarse separation unit 21, via the non-return valve 21d arranged in the liquid removal channel 21c and the nozzle 21e also arranged in the liquid removal channel, and is fed back to the screw block of the compressor 10.

[0064] The compressed oil-gas volume flow, a part of which has been separated in the rough separation unit 21, then flows from the rough separation unit 21 into the fine separation unit 22. In the fine separation unit 22, the compressed oil-gas volume flow flows through the fine separator 22a, so that the oil is separated again and collected in the liquid removal device 22b of the fine separation unit 22. Similar to the extraction of oil from the rough separation unit 21, in the fine separation unit 22, it is also extracted through the liquid extraction channel 22c of the fine separation unit 22, via the non-return valve 22d arranged in the liquid extraction channel 22c and the nozzle 22e also arranged therein, and is introduced back into the screw block of the compressor 10.

[0065] In the exemplary embodiment, the liquid extraction channel 22c of the fine separation unit 22 and the liquid extraction channel 21c of the rough separation unit 21 are also combined into a common liquid extraction channel (not shown) in the housing 20a of the liquid separation device 20, for conveying the respectively extracted oil through the common liquid extraction channel to the screw block of the compressor 10. However, in an alternative embodiment, the liquid extraction channel 22c of the fine separation unit 22 and the liquid extraction channel 21c of the rough separation unit 21 can also be guided separately from each other in the housing 20a of the liquid separation device 20, so as to first enter a common liquid extraction channel in the compressor housing 10a, or be guided to the screw block of the compressor 10 at separate inlets.

[0066] The invention is not limited to the described embodiments. In particular, the features described for the described embodiments, further described constructions and developments of the invention can be combined with one another, as long as they do not reasonably exclude one another. Reference numerals list

[0067] 1 Compressor system

[0068] 10. Compressor

[0069] 10a Housing (compressor)

[0070] 20 Liquid separation equipment

[0071] 20a Shell (liquid separation equipment)

[0072] 21. Rough separation unit

[0073] 21a Coarse separator

[0074] 21b Liquid removal equipment (rough separation unit)

[0075] 21c Liquid removal channel (coarse separation unit)

[0076] 21d Check valve (coarse separation unit; backflow prevention device)

[0077] 21e Nozzle (Coarse Separation Unit)

[0078] 22 Fine separation unit

[0079] 22a Fine separator

[0080] 22b Liquid removal equipment (fine separation unit)

[0081] 22c Liquid removal channel (fine separation unit)

[0082] 22d Check valve (fine separation unit; backflow prevention device)

[0083] 22e Nozzle (fine separation unit)

Claims

1. A liquid separation device (20) for a compressor system (1), the liquid separation device comprising: at least one rough separation unit (21), the rough separation unit having at least one rough separator (21a) and a liquid removal device (21b); at least one fine separation unit (22), the fine separation unit having at least one fine separator (22a) and a liquid removal device (22b); and at least one liquid removal channel (21c, 22c) for discharging liquid from a corresponding liquid removal device (21b, 22b), wherein The at least one liquid removal channel (21c, 22c) is formed in the liquid separation device (20).

2. The liquid separation device (20) according to claim 1, wherein: The at least one liquid removal channel (21c, 22c) is formed by a housing (20a) of the liquid separation device (20).

3. The liquid separation device (20) according to claim 1 or 2, wherein: The at least one liquid removal channel (21c, 22c) has at least two channel sections, at least one of which is fluidically connected to a liquid removal device (21b) of a coarse separation unit (21) and at least one other channel section is fluidically connected to a liquid removal device (22b) of a fine separation unit (22), or The liquid separation device (20) has at least two liquid removal channels (21c, 22c), at least one of which is fluidically connected to a liquid removal device (21b) of a coarse separation unit (21) and at least one other liquid removal channel (22c) is fluidically connected to a liquid removal device (22b) of a fine separation unit (22).

4. The liquid separation device (20) according to claim 3, wherein: At least one backflow prevention device (21d, 22d) is arranged in each of the at least two channel sections or in each of the at least two liquid extraction channels (21c, 22c), and the backflow prevention device (21d, 22d) is configured to prevent backflow from the at least two channel sections or the at least two liquid channels (21c, 22c) to the liquid extraction devices (21b, 22b) respectively connected thereto.

5. The liquid separation device (20) according to claim 4, wherein: The at least one backflow prevention device (21d, 22d) is arranged in each of the at least two channel sections or in each of the at least two liquid removal channels (21c, 22c), and A backflow prevention device (21d, 22d) configurable to one of the at least two channel sections or one of the at least two liquid removal channels (21c, 22c) has a response characteristic different from that of a backflow prevention device (21d, 22d) configurable to another of the at least two channel sections or another of the at least two liquid removal channels (21c, 22c).

6. The liquid separation device (20) according to any one of the preceding claims, wherein: At least one nozzle (21e, 22e) is arranged in the at least one liquid removal channel (21c, 22c) or is formed at least in sections by the liquid channel (21c, 22c).

7. The liquid separation device (20) according to claim 6, wherein: The at least one nozzle (21e, 22e) is arranged in each of the at least two channel sections or in each of the at least two liquid removal channels (21c, 22c) according to claim 3, and A nozzle (21e, 22e) configurable to one of the at least two channel sections or one of the at least two liquid removal channels (21c, 22c) has a cross section different from a nozzle (21e, 22e) configurable to another of the at least two channel sections or another of the at least two liquid removal channels (21c, 22c).

8. The liquid separation device (20) according to any one of claims 4 to 7, wherein: The backflow prevention device (21d, 22d) and / or the nozzle (21e, 22e) can be screwed into the at least one liquid removal channel (21c, 22c).

9. The liquid separation device (20) according to any one of claims 4 to 8, wherein: The backflow prevention device (21d, 22d) and the nozzle (21e, 22d) according to any one of claims 4, 5 or 8 are formed by a common flow control device, in particular by a common flow control element.

10. The liquid separation device (20) according to any one of the preceding claims, wherein The at least one liquid removal device (21b) of the coarse separation unit (21) and / or the at least one liquid removal device (22b) of the fine separation unit (22) is arranged below the respectively associated separators (21a, 22a) in a suitable installation position of the liquid separation device (20), in particular, in a flow-smoothing area of ​​the corresponding separation unit (21, 22).

11. The liquid separation device (20) according to any one of the preceding claims, wherein The at least one liquid extraction device (21b) of the coarse separation unit (21) and / or the at least one liquid extraction device (22b) of the fine separation unit (22) has a liquid outlet leading to the at least one liquid extraction channel (21c, 22c), and the liquid outlet is located at the lowest point of the at least one liquid extraction device (21b) of the coarse separation unit (21) and / or the at least one liquid extraction device (22b) of the fine separation unit (22) in an installation position suitable for use of the liquid separation device (20).

12. The liquid separation device (20) according to any one of the preceding claims, wherein: The at least one liquid removal device (21b) of the coarse separation unit (21) and / or the at least one liquid removal device (22b) of the fine separation unit (22) is configured as a detachable cover for fastening to a housing (20a) of the liquid separation device (20).

13. The liquid separation device (20) according to any one of the preceding claims, wherein: The at least one liquid removal channel (21c, 22c) is designed as a branch line or a ring line.

14. A compressor system (1), comprising: Compressor (10); and The liquid separation device (20) according to any one of claims 1 to 13, wherein The liquid separation device (20) is arranged outside the housing (10a) of the compressor (10).

15. The compressor system (1) according to claim 14, wherein: The housing (10a) of the compressor (10) is adjacent to the housing (20a) of the liquid separation device (20), and in particular the at least one liquid removal channel (21c, 22c) is adjacent to the extraction channel of the compressor (10).

16. Railway vehicle comprising a fluid separation device (20) according to any one of claims 1 to 13 and / or a compressor system (1) according to claim 14 or 15.

Images