WO2022157134A1 - Automatic cleaning system for sludge cleaning - built into two-stroke cross-head engines - Google Patents
Automatic cleaning system for sludge cleaning - built into two-stroke cross-head engines Download PDFInfo
- Publication number
- WO2022157134A1 WO2022157134A1 PCT/EP2022/050960 EP2022050960W WO2022157134A1 WO 2022157134 A1 WO2022157134 A1 WO 2022157134A1 EP 2022050960 W EP2022050960 W EP 2022050960W WO 2022157134 A1 WO2022157134 A1 WO 2022157134A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- auger
- engine
- sludge
- hollow
- towards
- Prior art date
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 29
- 238000004140 cleaning Methods 0.000 title claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 3
- 239000007787 solid Substances 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 description 18
- 239000003921 oil Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 241000237858 Gastropoda Species 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
- F02B25/04—Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
Definitions
- the invention concerns an automatic cleaning system with a rotating flexible spiral auger that can be used in or on two-stroke cross-head engines, and is particularly suitable for incorporation into the engine flushing air belts, (also referred to as" Scavenge air space” or “piston underside space”).
- the invention is also suitable for installation in the engine flushing air tank "scavenge air receiver”.
- the system is suitable for installation in the piping systems that divert from the above areas.
- the invention can be used both as a retrofit on existing engines and installations, as well as for installation in or on new engines and installations.
- the invention can be used both for pressure-set and pressure-less (open) systems.
- the object of the invention is to automatically prevent unacceptable accumulation of solid I sluggish liquid sludge during continued operation of the engine, using adapted rotation of flexible centerless helical auger.
- the invention will result in trouble-free operation of these two-stroke engines and will mean a drastic saving in man-hours for manual cleaning.
- the invention could lead to one significant savings in relation to consumption of cleaning chemicals and diesel oil consumed in connection with manual cleaning of the indicated areas in the engine.
- this invention will assist engine operators to save consumption of significant amount of cylinder lubrication oil.
- this includes introducing an engine with an automatic cleaning system with rotating flexible spiral auger fixed mounted within a hollow of the engine such that fluids within the hollow are transported along the outer diameter of the auger.
- the auger may be centreless such that sludge and oil further flows in an auger center.
- the auger may be sufficiently flexible to allow it to extend straight or slightly curvingly, thus adapting to the hollow.
- the auger may be positioned such that it can scrape a sludge out of the engine towards an outlet opening.
- an auger is positioned in an engine hollow being the scavenge air space or piston underside space.
- the bottom of the hollow may incline towards the bottom of the auger, thus that both sludge and oil will slide or flow down towards the bottom of the auger.
- an auger is positioned in an engine hollow being the scavenge air receiver.
- the auger may be held in position by a longitudinal guiding plate.
- a driving unit may be mounted at the end of the auger.
- the auger may be positioned in the integrated pipes that drains from the engine.
- the rotating flexible spiral or helical auger is known from flex augers which e.g. used for transport of feed and granules in e.g. agriculture.
- the auger is characterized by a relatively fast rotation and the primary function of the auger is transport (auger run) of dry feed or granules through a pipe or duct.
- the rotating flexible helical auger is further characterized by being flexible so that it can follow and function in any. channels and I or tubes any soft bends.
- the auger's primary function is to prevent the deposition of solids (sludge). This is achieved at a relatively slow rate rotation that produces a scraping effect against the substrate.
- the primary media transport passes by flow through the hollow diameter of the spiral auger, as well as along the outer diameter of the auger.
- the flow occurs by gravity due to the inclination of the substrate or as due to pressure difference between the inlet and outlet of the auger.
- substrate is referred the profile cross section in which the auger is positioned.
- the auger can thus be placed in pipes and / or ducts that are closed and possibly combined with fully I partially open stretches.
- the auger can also be positioned in closed pipes and ducts.
- GB 468813 A discloses an automatic cleaning system with rotating flexible spiral auger fixed in the pipe system. Transport of solids takes place by a scraping effect against the bottom of the pipe while the system allows liquid flow through the hollow diameter of the helical auger, as well as along the space that emerges between the outer diameter of the helical auger and the inner diameter of the tube.
- the publication describes an invention and technique intended for transporting ash and slag down through a pipe that is constantly filled I flooded by stagnant water, a technique mainly used in various combustion boilers, and is characterized by the transporting I forcing of the solid down below the surface and through stagnant water in a constantly pipe.
- the purpose of this technique is to effectively extinguish embers and fire in the ash I slag before being transported for storage.
- This effect is opposite to the effect obtained by the invention, where the primary purposes is continuously to keep a tube or pipe substrate clean of undesired substate.
- the primary purposes is continuously to keep a tube or pipe substrate clean of undesired substate.
- this is extremely important since the clogging can cause sudden leaks of oil, fuel or cooling water, and of safety reasons it is important that such a leak be diverted immediately through clean and empty ducts and drainage tubes or pipes, that therefore needs continuously to be kept clean and empty - ready to drain abnormal leakage via.
- the invention further differs from this technique by being built into e.g. a two-stroke engine of the crosshead type.
- the rotational speed of the spiral auger may be adjusted so that a relatively clean substrate I channel I pipe is maintained by preventing precipitation and construction of solid and I or sluggish liquid material.
- the speed of rotation of the auger may be adjusted to slow speed to avoid unnecessary friction between auger and substrate. This avoids unnecessary wear as well as temperature rise on the rotating auger.
- the rotating movement of the spiral auger can be a constant or varying rotational speed.
- the invention can is also be performed with intermittent (start / stop) rotating motion.
- the invention is further characterized by having a drive unit mounted at the end of the auger.
- the scraping I cleaning movement of the spiral auger can take place with the direction of movement away from the drive unit - as well as direction of movement towards the drive unit.
- the drive unit produces a rotary movement of the spiral auger.
- the rotary movement of the drive unit can be performed using: electric motor I actuator, hydraulic motor I actuator, pneumatic motor/ actuator, mechanical actuator or manually operated.
- FIG. 1 Figure 1 shows an embodiment seen in the cross-section of an engine 1 where augers 2 (or snails or spiral screws) are mounted both in the engine flushing air belts 3 (referred to as" Scavenge air space” or “piston underside space”), and in the engine flushing air tank 4.
- the augers 2 are covered by longitudinal guiding plates 5 Fig. 2 Illustration seen from the side of the engine 1 with an auger 2 positioned in the engine flushing air tank 4 and a section of the auger extending into a pipe or channel 9 with an opening 6.
- FIG. 3 Illustration seen from the side of the engine with an auger 2 positioned in the engine flushing air belts 3 and a section of the auger extending into a pipe or channel 9 with an opening 6.
- Fig 4 Illustration of an embodiment where the augers 2 are mounted in the engine flushing air belts 3, as well as in the integrated pipes 10 that drains from the engine 1 .
- FIG. 1 Illustration of an auger 2 positioned within an auger tube 13.
- FIG. 1 Illustration of an auger 2 and parts of a driving unit 8.
- Fig. 7 Illustration of an auger 2 positioned relative to a surface 24 with declining sides towards the auger 2.
- Fig. 8 Illustration of an auger 2 positioned relative to a surface 24 with one vertical side.
- FIG. 9 Illustration of an auger 2 positioned relative to a surface 24 where the auger 2 is positioned in a recess 25 of the surface 24 according to one embodiment.
- FIG.10 Illustration of an auger 2 positioned relative to a surface 24 where the auger 2 is positioned in a recess 25 of the surface 24 according to another embodiment relative to fig. 9.
- Fig. 11 Illustration of an auger 2 positioned relative to a circular surface 24 and with a longitudinal guiding plate 5.
- FIG 1 shows an embodiment seen in the cross-section of an engine 1 where augers 2 (or snails or spiral screws) are mounted both in the engine flushing air belts 3 (referred to as” Scavenge air space” or “piston underside space”), and in the engine flushing air tank 4 (also referred to as “scavenge air receiver”).
- the augers 2 are held in position by longitudinal guiding plates 5.
- the auger 2 can extend straight or slightly curvingly.
- the bottom of the engine flushing air belts 3 are made with an appropriate inclination towards the bottom of the auger 2, thus that both sludge and oil will slide/flow down towards the bottom of the auger 2.
- the auger 2 thus can scrape the sluggish liquid sludge out of the engine 1 , towards the outlet opening 6 of the auger 2 (see fig 3).
- the oil will be able to flow along the outer diameter of the auger 2, as well as in the hollow of the auger 2 center 7 (see fig. 4).
- Fig 2 and Fig 3 illustrates embodiments seen from the side of the engine 1.
- the spiral augers 2 in the embodiment extends along all the engine 1 cylinders.
- the cleaning system can be divided into sections if desirable.
- the figures show driving units 8 mounted at the end of the augers 2 and the outlet opening 6 positioned in relation to a form of pipe or channel 9 that the auger 2 extend into towards its outlet 6.
- the outlet 6 may be connected via pressure tight pipes to a tank, for collection of oil and sludge.
- the longitudinal direction of the screws is mainly parallel to that of the engine 1 longitudinal direction
- FIG 4 illustrates an embodiment where the augers 2 are mounted in the engine flushing air belts 3, as well as in the integrated pipes 10 that drains from the engine 1.
- a valve 11 e.g. a ball valve
- the integrated tube 10 is common for all the cylinders of engines 1 , and it may be an advantage to be able to seal off the outlet from the individual cylinders using a valve 11 .
- the crossmounted augers 2 scrapes sludge and oil from the engine flushing air belts 3, towards the driving unit 8. The mixture of sludge and oil will then flow/slide into the integrated tube 10.
- the auger 2a scrapes the sluggish liquid sludge away from the engine 1 in the engine 1 longitudinal direction.
- the oil could flow along the outer diameter of the auger (2), as well as in the hollow center 7.
- the longitudinal direction of the auger 2 is mainly perpendicular to the engine's 1 longitudinal direction, while the auger 2a built into the integrated tubes 10, mainly in the longitudinal direction of the engine 1.
- the automatic cleaning system can thus be built in at any practical angle, in relation to the longitudinal direction of the engine 1 , as well as any practical angle to the horizontal plane of the engine 1 . However, it is an advantage to be inclined towards the outlet 6 of the auger 2, 2a.
- the outlet 6 of the auger 2, 2a from the engine 1 may be designed as a circular pipe, a machined or cast channel, or any other pressure tight duct or passage, allowing the free rotation and movement of the auger 2.
- FIGS 5 and 6 show an embodiment of the drive unit 8 intended for pressurized systems (cleaning from the engine flushing air belts 3 and flushing air tank 4).
- the illustrated auger 2 is blunt (as may be the case for all the disclosed embodiments) and the embodiment relates to a traditional axel sealing 12 seal against the pressure present in the auger tube 13 (the flushing air pressure).
- the axle 14 (or shaft) transmits the slow rotating motion of a gear motor 16 to spiral the auger 2.
- the housing 15 acts both as the fundament and as the end flange of the auger tube 13.
- the bearing housing 17 absorbs the axial and radial forces of the shaft via e.g. a ball bearing.
- the gear motor 16 produces the rotation of the axle 14 and auger 2.
- the rotating power of the gear motor 16 is transmitted through a spring split mounted through the holes 18a, 18b to ensure the auger 2 and gear motor 16 from being overloaded.
- the sliding bearing 19 functions partly to absorb the radial forces of the axle 14 and to compress the traditional axle sealing 12. The compressing effect is achieved by tightening the bolts 20 so that the sliding bearing 19 is pulled in the direction of the housing 15 achieving a close effect between the rotating axle 14 and the stationary housing 15.
- the spiral auger 2 may be fastened to the axle 14 by means of a screw 21 (e.g. a pinole screw) in a recess in the axle 14.
- the guard 22 is mounted on the housing 15 to protect against access to the rotating axle 14.
- the inductive sensor 23 monitors the desired axle rotation.
- Fig. 7 shows an embodiment auger 2 positioned relative to a surface 24.
- the auger 2 is positioned at the bottom of a bend surface 24 having declining sides towards the auger 2.
- the arrows indicate direction of movement of sludge and oils towards the bottom of the auger 2.
- Fig. 8 shows the auger 2 and surface 24 in another embodiment differing from the embodiment of fig. 7 in that one side of the surface 24 is vertical.
- the arrows indicate direction of movement of sludge and oils towards the bottom of the auger 2.
- Fig. 9 shows the auger 2 and surface 24 in a third embodiment differing from the embodiment of fig. 7 in that the auger 2 is positioned in a recess 25 of the surface 24 having a depth so that the auger 2 reach above the recess 25.
- the arrows indicate direction of movement of sludge and oils towards the bottom of the auger 2.
- Fig. 10 shows the auger 2 and surface 24 in a fourth embodiment differing from the embodiment of fig. 9 by the recess 25 having a depth at least as large as the diameter, or height, of the auger 2, this thus being essentially fully confined within the recess 25.
- the arrows indicate direction of movement of sludge and oils towards the bottom of the auger 2.
- Fig. 11 shows the auger 2 and surface 24 in a fourth embodiment where the surface 24 is circular, or at least curving.
- the arrows indicate direction of movement of sludge and oils towards the bottom of the auger 2.
- the auger 2 as illustrated in fig. 11 are held in position by longitudinal guide plates 5. These guide plates are positioned and designed to ensure that sludge and oil can slide I flow down to the bottom of the auger 2. And at the same time keep the auger in the desired position relative to surface 24 and/or recess 25.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020237027740A KR20230130108A (en) | 2021-01-19 | 2022-01-18 | 2-stroke cross-head engine with built-in automatic cleaning system for sludge cleaning |
CN202280021701.6A CN116997708A (en) | 2021-01-19 | 2022-01-18 | Automatic cleaning system constructed in two-stroke cross engine for sludge cleaning |
EP22700954.5A EP4281657A1 (en) | 2021-01-19 | 2022-01-18 | Automatic cleaning system for sludge cleaning - built into two-stroke cross-head engines |
JP2023540899A JP2024504579A (en) | 2021-01-19 | 2022-01-18 | Automatic cleaning system for sludge cleaning built into a 2-stroke crosshead engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DKPA202100057 | 2021-01-19 | ||
DKPA202100057 | 2021-01-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022157134A1 true WO2022157134A1 (en) | 2022-07-28 |
Family
ID=80050960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/050960 WO2022157134A1 (en) | 2021-01-19 | 2022-01-18 | Automatic cleaning system for sludge cleaning - built into two-stroke cross-head engines |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4281657A1 (en) |
JP (1) | JP2024504579A (en) |
KR (1) | KR20230130108A (en) |
CN (1) | CN116997708A (en) |
WO (1) | WO2022157134A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB468813A (en) | 1936-07-14 | 1937-07-13 | George Schwabach | Conveyor devices for ashes, cinders and the like |
DE102005035509A1 (en) * | 2005-07-26 | 2007-02-01 | Marco Wiedel | Tool for removing deposits in pipes has a coupling piece for a detachable fastening on a spiral and a rod linked to it extending in an axial direction with metal bristles radiating from it |
CN204412719U (en) * | 2014-12-31 | 2015-06-24 | 青岛东方循环能源有限公司 | A kind of cracking gas conveyance conduit cleaning plant |
WO2017167334A1 (en) * | 2016-03-28 | 2017-10-05 | Fange Innova | An apparatus for outputting a solid material, such as entrained in a fluid |
WO2018233789A1 (en) * | 2017-06-20 | 2018-12-27 | Petersen Hansa Maria | Automatic cleaned drain piping system on crosshead type two-stroke engines, having a slow rotating centreless flexible spiral auger fixed mounted in the piping system |
-
2022
- 2022-01-18 EP EP22700954.5A patent/EP4281657A1/en active Pending
- 2022-01-18 CN CN202280021701.6A patent/CN116997708A/en active Pending
- 2022-01-18 KR KR1020237027740A patent/KR20230130108A/en unknown
- 2022-01-18 JP JP2023540899A patent/JP2024504579A/en active Pending
- 2022-01-18 WO PCT/EP2022/050960 patent/WO2022157134A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB468813A (en) | 1936-07-14 | 1937-07-13 | George Schwabach | Conveyor devices for ashes, cinders and the like |
DE102005035509A1 (en) * | 2005-07-26 | 2007-02-01 | Marco Wiedel | Tool for removing deposits in pipes has a coupling piece for a detachable fastening on a spiral and a rod linked to it extending in an axial direction with metal bristles radiating from it |
CN204412719U (en) * | 2014-12-31 | 2015-06-24 | 青岛东方循环能源有限公司 | A kind of cracking gas conveyance conduit cleaning plant |
WO2017167334A1 (en) * | 2016-03-28 | 2017-10-05 | Fange Innova | An apparatus for outputting a solid material, such as entrained in a fluid |
WO2018233789A1 (en) * | 2017-06-20 | 2018-12-27 | Petersen Hansa Maria | Automatic cleaned drain piping system on crosshead type two-stroke engines, having a slow rotating centreless flexible spiral auger fixed mounted in the piping system |
Also Published As
Publication number | Publication date |
---|---|
CN116997708A (en) | 2023-11-03 |
KR20230130108A (en) | 2023-09-11 |
EP4281657A1 (en) | 2023-11-29 |
JP2024504579A (en) | 2024-02-01 |
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