WO2013039106A1 - Structure de prévention de la contamination pour séparateur de gouttelettes d'eau à air de balayage, et cuve dotée de la structure de prévention de la contamination pour séparateur de gouttelettes d'eau à air de balayage - Google Patents

Structure de prévention de la contamination pour séparateur de gouttelettes d'eau à air de balayage, et cuve dotée de la structure de prévention de la contamination pour séparateur de gouttelettes d'eau à air de balayage Download PDF

Info

Publication number
WO2013039106A1
WO2013039106A1 PCT/JP2012/073337 JP2012073337W WO2013039106A1 WO 2013039106 A1 WO2013039106 A1 WO 2013039106A1 JP 2012073337 W JP2012073337 W JP 2012073337W WO 2013039106 A1 WO2013039106 A1 WO 2013039106A1
Authority
WO
WIPO (PCT)
Prior art keywords
water droplet
droplet separator
scavenging
air
separator
Prior art date
Application number
PCT/JP2012/073337
Other languages
English (en)
Japanese (ja)
Inventor
貴幸 赤木
Original Assignee
三菱重工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to CN201280043635.9A priority Critical patent/CN103782006B/zh
Priority to KR1020157034400A priority patent/KR20150140873A/ko
Priority to KR1020147005983A priority patent/KR101763566B1/ko
Publication of WO2013039106A1 publication Critical patent/WO2013039106A1/fr

Links

Images

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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
    • F02B29/0468—Water separation or drainage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/14—Use of propulsion power plant or units on vessels the vessels being motor-driven relating to internal-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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/44—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
    • 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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a water droplet separator contamination preventing structure for cleaning air attached to a large diesel engine or the like equipped with a supercharger, and a ship equipped with the same.
  • turbocharger represented by a turbocharger or the like to increase engine efficiency. Since the air supplied to the engine generates heat due to heat of compression when compressed by the turbocharger, an air cooler is provided to cool this heat. The compressed and heated air generates a large amount of drain water as it is cooled in the air cooler. If compressed air (hereinafter referred to as "cleaning air") containing this drain water is supplied to the engine as it is, water may corrode the sliding surface of the cylinder liner, etc.
  • a water droplet separator (drain separator) is installed on the downstream side of the air cooler, where the drain water contained in the cleaning air is separated by condensation and only the cleaning air from which water has been removed Supplied to the engine (scavenged air).
  • the drain water separated by the water droplet separator is discharged overboard (such as the sea) through a drain water discharge pipe.
  • the bottom of the scavenging trunk primary chamber and the water drop separator are provided so that the drain oil that has fallen to the bottom of the scavenging trunk primary chamber does not flow to the water drop separator side.
  • a wedge-shaped shield plate and a step portion which is higher on the water droplet separator side.
  • the present invention is a water droplet separator contamination preventing structure for cleaning air capable of preventing drain oil backflowing from the scavenging port side of the engine from adhering to the water droplet separator by a simple and inexpensive configuration, and a ship equipped with this Intended to provide.
  • an air cooler and water droplets are sequentially arranged in the air conduit connecting between the turbocharger and the scavenging port of the engine from the turbocharger side.
  • An upper fixing member for fixing an upper portion of the water droplet separator in the air conduit so that drain oil dripping from the scavenging port side after the engine stops does not fall on the water droplet separator It is characterized in that it is formed in the shape of a cover that covers the upper surface of the vessel, and the end portion of the upper fixing member on the scavenging trunk chamber side is extended in a bowl shape to form a front extension.
  • the upper fixing member for fixing the upper portion of the water droplet separator in the air conduit also functions as a cover covering the upper surface of the water droplet separator. Shield the dripping drain oil against the water drop separator. For this reason, it is prevented that drain oil adheres to a water droplet separator. Furthermore, the drain oil dripping on the upper fixing member drips from the tip of the front side extension formed by extending the scavenging trunk chamber side end of the upper fixing member into a bowl shape. At this time, the dripping drain oil passes through a position away from the surface on the scavenging air trunk side of the water droplet separator by the amount of extension of the front extension and falls to the bottom of the scavenging air trunk.
  • this water droplet separator pollution prevention structure can be configured simply by slightly changing the shape of the upper fixing member for fixing the upper portion of the water droplet separator in the air conduit, so that the structure is simple and inexpensive. Can.
  • the drain oil is disposed on the bottom of the scavenging trunk chamber and at a position closer to the water droplet separator.
  • a wedging portion is provided to prevent flow to the separator side, and the front side extension portion protrudes beyond just above the weir stopping portion to the opposite side of the water droplet separator.
  • the drain oil dripping on the upper fixing member drops from the front end of the front extension, the area on the opposite side of the water drop separator than the water blocking part without being applied to the water drop separator
  • the air is dropped to the bottom of the scavenging air trunk chamber, and is collected to the drain oil discharge pipe provided at the bottom of the scavenging air trunk chamber. For this reason, it is possible to prevent the drain oil from adhering to the water droplet separator or from flowing into the drain water discharge pipe into which the drain water separated by the water droplet separator flows.
  • an air cooler and water droplets are sequentially arranged in the air conduit connecting between the turbocharger and the scavenging port of the engine from the turbocharger side.
  • An upper fixing member for fixing an upper portion of the water droplet separator in the air conduit so that drain oil dripping from the scavenging port side after the engine stops does not fall on the water droplet separator; Of the upper fixing member, and a vertical wall-shaped fence portion is provided along the side adjacent to the end portion on the scavenging trunk chamber side of the upper fixing member.
  • the upper fixing member functions as a cover that covers the upper surface of the water droplet separator, and drain oil dripping from the scavenging port side when the engine stops is used as a water droplet separator. Shield to prevent contamination of the water drop separator.
  • the drain oil dripping on the upper fixing member is blocked by the vertical wall-shaped fence portion provided on the upper fixing member and does not flow downward from the side of the upper fixing member. It flows down from the tip of the end on the side of the scavenging air trunk chamber. Therefore, it is possible to effectively prevent the drain oil from adhering particularly to the side surface of the water droplet separator.
  • the fence portion has an angle member with an L-shaped cross section along the side edge to fix the upper portion It is characterized in that it is provided by being fixed to the upper surface of the member.
  • the fence portion can be formed simply and inexpensively. And since the above-mentioned angle material can be shared as a fixing tool of an upper fixed member, a modification, vibration, etc. of an upper fixed member can be controlled effectively.
  • an air cooler and water droplets are sequentially arranged in the air conduit connecting between the turbocharger and the scavenging port of the engine from the turbocharger side.
  • An upper fixing member for fixing an upper portion of the water droplet separator in the air conduit so that drain oil dripping from the scavenging port side after the engine stops does not fall on the water droplet separator;
  • the position of the side adjacent to the end on the side of the scavenging trunk chamber is extended in the form of a hook outward from the side of the water droplet separator Characterized in that the formation of the lateral extensions Te.
  • the upper fixing member functions as a cover for covering the upper surface of the water droplet separator, and drain oil dripping from the scavenging port side into the water droplet separator. Shield to prevent contamination of the water drop separator.
  • the bowl-shaped lateral extension portion provided on the side of the upper fixing member is extended outward in a bowl shape than the side of the water droplet separator, the drain dripping on the upper fixing member Oil is blocked by the lateral extensions and does not flow down the sides of the water drop separator. Therefore, it is possible to effectively prevent the drain oil from adhering particularly to the side surface of the water droplet separator.
  • a sixth aspect of the water droplet separator contamination preventing structure for cleaning air according to the present invention is, in the first aspect, along the side adjacent to the end on the scavenging trunk chamber side of the upper fixing member, It is characterized in that a vertical wall-shaped fence portion is provided to stand upward.
  • the upper fixing member functions as a cover for covering the upper surface of the water droplet separator, and drain oil dripping from the scavenging port side is shielded against the water droplet separator to prevent contamination of the water droplet separator. Also, drain oil dripping on the upper fixing member drips from the tip of the front extension of the upper fixing member, and passes a position away from the scavenging trunk chamber side by the amount of extension of the front extension. It is possible to effectively prevent the drain oil from adhering to the water droplet separator as it falls to the bottom of the scavenging air trunk chamber.
  • the drain oil dripping on the upper fixing member is blocked by the vertical wall-shaped fence portion provided on the upper fixing member and does not flow downward from the side of the upper fixing member, so that the drain oil It flows downward from the tip. Therefore, it is possible to effectively prevent the drain oil from adhering particularly to the side surface of the water droplet separator.
  • the seventh aspect of the water droplet separator contamination preventing structure of cleaning air according to the present invention is the first or third aspect, wherein a side of the upper fixing member adjacent to the end portion on the scavenging trunk chamber side is It is characterized in that the position is extended in a bowl-like shape outward than the side surface of the water droplet separator to form a lateral extension.
  • the bowl-shaped lateral extension provided on the side of the upper fixing member is more outward than the side of the water droplet separator
  • the drain oil dripping on the upper fixing member is blocked by the lateral extension and does not flow down the side of the water droplet separator, and the drain oil adheres to the side of the water droplet separator. It can be effectively prevented.
  • a ship according to the present invention is characterized by including the water droplet separator according to any one of the first to seventh aspects.
  • drain oil flowing back from the scavenging port side of the engine can be used as the water droplet separator by the simple and inexpensive configuration. It is possible to prevent adhesion.
  • FIG. 4 is a longitudinal sectional view taken along the line IV-IV of FIG. 3, showing a first embodiment of a water droplet separator contamination preventing structure. It is the V section enlarged view of FIG. It is a perspective view of an angle material which constitutes a fence part. It is a longitudinal cross-sectional view which shows 2nd Embodiment of a water droplet separator contamination prevention structure.
  • FIG. 1 is a longitudinal sectional view showing a structural example of a large-sized diesel engine for ships, a supercharger, an air conduit, and the like provided with a structure for preventing water droplet separation and contamination of cleaning air according to an embodiment of the present invention.
  • the diesel engine 1 is, for example, a known uniflow two-stroke multi-cylinder engine, and a cylinder liner 4 is provided inside a cylinder jacket 3 installed on the crankcase 2. A head 5 is provided. A cylinder bore 6 is formed inside the cylinder liner 4, and a piston 7 is slidably inserted into the cylinder bore 6. It is well known that a piston rod 8 is connected to the piston 7 and the lower end of the piston rod 8 is connected to the crankshaft via a connecting rod (not shown).
  • a plurality of scavenging ports 11 are formed side by side in the circumferential direction. Further, a scavenging passage 12 is defined inside the cylinder jacket 3 so as to surround the scavenging ports 11.
  • an exhaust port 13 and an exhaust valve 14 for opening and closing the exhaust port 13 are provided at the top of the cylinder head 5. The exhaust valve 14 is driven to open and close by a cam shaft (not shown) or an electromagnetically controlled hydraulic device, and opens in synchronization with the timing at which the piston 7 ascends in the cylinder bore 6.
  • Exhaust ports 13 of a plurality of cylinders of the diesel engine 1 are connected to cylindrical static exhaust pressure chambers 17 (surge tanks) along the cylinder arrangement direction via exhaust pipes 16 respectively.
  • the exhaust turbine side flow path 19 of the charger 18 (supercharger) is connected.
  • the intake turbine side flow passage 20 of the turbocharger 18 is connected to the scavenging passage 12 through an air conduit 22 having a substantially U-shaped longitudinal cross-sectional shape.
  • the air cooler 23 and the water droplet separator 24 are installed in the air conduit 22 sequentially from the turbocharger 18 side, and the downstream side of the water droplet separator 24 and the portion where the air conduit 22 is connected to the scavenging passage 12
  • a scavenging trunk 25 extending in the vertical direction is disposed.
  • the air cooler 23 and the water droplet separator 24 are provided with multilayer air passages (not shown), and are internally cooled by a refrigerant such as cooling water.
  • the water droplet separator 24 is installed at the bottom of the scavenging air chamber 25, and the scavenging air chamber 25 extends upward from the water droplet separator 24 and is connected to the air scavenging port 11, and is located on the lower side (upstream side) And a scavenging trunk secondary chamber 25B located on the upper side (downstream side).
  • a plurality of reed valve-like scavenging valves 28 are provided on a dividing wall plate 27 which obliquely separates the scavenging air trunk primary chamber 25A from the scavenging air trunk secondary chamber 25B.
  • the scavenging valve 28 is a check valve that passes only the air flow from the scavenging trunk primary chamber 25A to the scavenging trunk secondary chamber 25B and blocks the air flow in the reverse direction.
  • an auxiliary blower 29 is provided which allows communication between the scavenging trunk primary chamber 25A and the scavenging trunk secondary chamber 25B with a small opening area.
  • the water drop separator 24 provided on the downstream side of the air cooler 23 removes moisture by condensation and becomes dry air and the scavenging trunk primary chamber 25A and the scavenging trunk 2 It passes through the next chamber 25 B, and passes through the scavenging passage 12 to be supercharged into the cylinder bore 6 from the plurality of scavenging ports 11.
  • the water droplet separator 24 has a substantially rectangular parallelepiped shape and is installed inside the scavenging trunk primary chamber 25A.
  • a drain water discharge hole 32 and a drain water discharge pipe 33 are disposed immediately below the water droplet separator 24, and the drain water separated by the water droplet separator 24 is The water is discharged over the water (e.g., the sea) through the drain water discharge hole 32 and the drain water discharge pipe 33.
  • a bowl-shaped shielding plate 36 (boilerling portion) standing up.
  • a drain oil discharge hole 38 and a drain oil discharge pipe 39 are disposed at the bottom of the scavenging trunk primary chamber 25A opposite to the water droplet separator 24 with the shield plate 36 interposed therebetween.
  • the shielding plate 36 is also a supporting member of the water droplet separator 24 as described later.
  • the oil supplied to lubricate the sliding portion between the cylinder liner 4 and the piston 7 flows back from the scavenging port 11 and the scavenging passage 12, and the scavenging valve 28 provided on the partition plate 27.
  • the water drips into the scavenged air trunk chamber 25 (25A, 25B) as drain oil through the gap of the above and flows down to the bottom of the scavenged air trunk primary chamber 25A.
  • the drain oil thus dropped is prevented from moving toward the water droplet separator 24 by the shield plate 36, and is stored in a waste oil tank (not shown) through the drain oil discharge hole 38 and the drain oil discharge pipe 39. As shown in FIGS.
  • the inside of the scavenging trunk primary chamber 25 A is partitioned by a plurality of intake buffer plates 41 installed in parallel along the longitudinal direction of the engine.
  • An intake flow hole 42 is bored substantially at the center, and a notch-like drain oil flow portion 43 for smoothly flowing the drain oil to the drain oil discharge pipe 39 is formed at the lower portion of the intake buffer plate 41 ing.
  • the vertical wall 49 (see FIGS. 2 and 4) between the scavenging trunk primary chamber 25A and the room in which the air cooler 23 is provided has an opening for passing the cleaning air pumped from the turbocharger 18.
  • a portion 50 is formed, and the water droplet separator 24 is attached to the vertical wall portion 49 so as to close the opening 50.
  • the surface facing the vertical wall 49 is called “rear surface 24R”
  • the surface facing the scavenging trunk primary chamber 25A is " It is called “front surface 24F”
  • the surface parallel to the intake buffer plate 41 is called “side surface 24S”
  • the upper surface is given a reference 24U.
  • the water droplet separator 24 has its side surface 24S fixed to the vertical wall 49 by the mounting bracket 53 and bolt 54 using an angle material or the like, while the lower portion of the front surface 24F is a shielding plate It is superimposed on 36 and fixed by a bolt 55.
  • the upper portion of the water droplet separator 24 is fixed to the vertical wall 49 via the upper fixing member 57.
  • the upper fixing member 57 covers the upper surface 24U of the water droplet separator 24 so that the drain oil dripping from the scavenging port 11 side into the scavenging trunk chamber 25 (25A, 25B) after the engine stops does not fall on the water droplet separator 24. It is formed in the shape of a cover. As shown in FIG. 4, the upper fixing member 57 has a fixing portion upper surface 57U parallel to the upper surface 24U of the water droplet separator 24 with a space, and a vertical wall 49 rising from the rear edge of the fixing portion upper surface 57U.
  • An end portion of the upper fixing member 57 on the scavenging trunk primary chamber 25A side is extended in a bowl shape with respect to the front surface 24F of the water droplet separator 24 and forms a front extension portion 62 having an extension amount L.
  • the front extension 62 extends beyond just above the shield plate 36 to the opposite side of the water droplet separator 24. That is, although the front fixing surface 57F of the upper fixing member 57 is the tip of the front extension 62, the position of the front fixing surface 57F is farther from the water droplet separator 24 than the shielding plate 36. positioned.
  • the length (length L) of the front extension 62 is determined by the length of the space collar 59.
  • the position of the side 57S adjacent to the end (front fixing surface 57F) of the upper fixing member 57 on the scavenging trunk primary chamber 25A side is a water droplet separator.
  • the lateral side extension portion 64 is formed to extend outward like a bowl from the side surface 24S of 24.
  • the lateral extension portion 64 is not in contact with the intake buffer plate 41, but the lateral extension portion 64 may be extended until it contacts the intake buffer plate 41.
  • the lateral extensions 64 are provided only on one side of the water droplet separator 24, but may be provided on both sides.
  • a fence portion 66 in the shape of a vertical wall standing up is provided along the side 57S of the upper fixing member 57 (the upper surface 57U of the fixing portion).
  • the fence portion 66 is provided, for example, by fixing an angle member 67 having an L-shaped cross section also shown in FIG. 6 along the side 57S of the upper fixing member 57 and fixing it to the upper surface 57U with a bolt 68 and a nut 69.
  • Square partition plates 70 are fixed to both ends of the angle member 67 by welding or the like.
  • the fence portion 66 is in contact with the intake buffer plate 41 and is not particularly fixed to the intake buffer plate 41, but the fence portion 66 is fixed to the intake buffer plate 41 by welding or bolting. By doing this, the angle member 67 forming the fence portion 66 can be used as a fixing tool for the upper fixing member 57, and deformation, vibration and the like of the upper fixing member 57 can be effectively suppressed.
  • the fence portion 66 may be slightly separated from the intake buffer plate 41. Furthermore, the fence portion 66 may be formed by bending the side portion of the upper fixing member 57 (the fixing portion upper surface 57U) upward along a predetermined width without using the angle member 67. In the case of a layout in which the intake buffer plate 41 does not intervene between a plurality of water drop separators 24, a lid member is covered so as to cover the gaps between the respective upper fixing members 57, and this lid member is The lateral extension 64 may be used.
  • the water droplet separator contamination prevention structure 47 configured as described above, as shown in FIG. 4, after the diesel engine 1 is stopped, dripping from the scavenging port 11 side into the scavenging trunk chamber 25 (25A, 25B) The falling drain oil DO is shielded by the cover-like upper fixing member 57 covering the upper surface 24 U of the water droplet separator 24 and is prevented from adhering to the water droplet separator 24.
  • the front surface of the water droplet separator 24 It falls to the bottom of the scavenging trunk primary chamber 25A by passing a position separated by an extension amount L of the front side extension 62 with respect to 24F. For this reason, adhesion of the drain oil DO to the water droplet separator 24 can be further effectively prevented.
  • drain oil DO dripping from the scavenging port 11 side into the scavenging air trunk chamber 25 (25A, 25B) after the engine stops does not adhere to the water droplet separator 24, cleaning air for suction by the water droplet separator 24
  • the drain oil DO is mixed with the drain water DW separated therefrom and flows into the drain water discharge pipe 33 as it is, so that the concern of contaminating the environment can be effectively eliminated.
  • the front fixing surface 57F forming the tip of the front side extension portion 62 passes just above the shielding plate 36. Since it is protruded to the opposite side of the water droplet separator 24, the drain oil DO dripping on the upper fixing member 57 is blocked without being applied to the water droplet separator 24 when dripping downward from the front fixing surface 57F.
  • the bottom of the scavenging trunk primary chamber 25A which is the area on the opposite side of the water droplet separator 24 from the plate 36, falls reliably and is collected in the drain oil discharge pipe 39 provided at the bottom of the scavenging trunk primary chamber 25A. For this reason, it can be effectively prevented that the drain oil DO adheres to the water droplet separator 24 or flows into the drain water discharge pipe 33 into which the drain water DW separated by the water droplet separator 24 flows.
  • the vertical wall-shaped fence portion 66 which stands upward is provided along the side 57S of the upper fixing member 57, the drain oil DO dripping on the upper fixing member 57 is blocked by the fence portion 66. Thus, it does not flow downward from the side 57S of the upper fixing member 57, but flows downward from the tip of the upper fixing member 57, that is, the front fixing surface 57F. Therefore, it is possible to effectively prevent the drain oil DO from adhering particularly to the side surface of the water droplet separator 24.
  • the fence portion 66 is provided by fixing the angle member 67 of L-shaped cross section along the side 57S of the upper fixing member 57 to the upper surface of the upper fixing member 57 (the upper surface of the fixing portion 57U). It can be formed simply and inexpensively. Since the fence portion 66 is provided with the partition plate 70, drain oil DO is prevented from flowing out from the gap formed at the corner between the rear fixing surface 57 R of the upper fixing member 57 and the fence portion 66.
  • the position of the side 57S of the upper fixing member 57 is extended in a bowl shape outward from the side of the water droplet separator 24 to form the lateral extension 64, so that dripping on the upper fixing member 57 occurs.
  • the drain oil DO which has fallen is blocked by the lateral extension 64 and does not flow down the side of the water droplet separator 24. Also in this respect, the drain oil DO can be effectively prevented from adhering to the side surface 24S of the water droplet separator 24.
  • the side extension 64 of the upper fixing member 57 of each water droplet separator 24 is used. They may be linked to each other.
  • the water droplet separator contamination prevention structure 47 can be configured by only slightly changing the shape of the upper fixing member 57 for fixing the upper portion of the water droplet separator 24 in the air conduit 22, so it is very simple and inexpensive. Can be configured. And, according to the ship provided with the water droplet separator contamination preventing structure 47, backflow from the scavenging port 11 side in the air conduit 22 connecting between the scavenging port 11 of the engine and the turbocharger 18 by a simple and inexpensive configuration. Prevents the drain oil DO from adhering to the water droplet separator 24, and prevents the drain oil DO from being mixed into the drain water DW separated from the intake air by the water droplet separator 24 and discharged as it is to the outside Can contribute to the conservation of the marine environment.
  • FIG. 7 is a longitudinal sectional view showing a second embodiment of the water droplet separator contamination preventing structure.
  • the structure is the same as that of the water droplet separator contamination preventing structure 47 of the first embodiment shown in FIG. 4 except for the configuration in the vicinity of the front extension 72 forming the tip of the upper fixing member 57. Since there is the same part, the same symbol is attached to the same part and the description is omitted.
  • the front fixing surface 57F constituting the front extension 72 of the upper fixing member 57 is directly bolted to the front surface 24F of the water droplet separator 24 without sandwiching a space collar or the like. It is tightened.
  • the front fixing surface 57F is vertically bent from the front edge of the upper surface 57U of the fixing portion and then bent away from the front surface 24F of the water droplet separator 24 at a position below the fastening bolt 73 and inclined.
  • the surface 57I is formed.
  • the angle of the inclined surface 57I is, for example, 30 degrees with respect to the horizontal, but may be shallow. That is, the inclined surface 57I may be lowered from the root side toward the tip side.
  • the extension L of the front extension 72 from the front surface 24F of the water droplet separator 24 is set equal to the extension L of the front extension 62 in the water droplet separator contamination preventing structure 47 of the first embodiment. There is.
  • the drain oil DO dripping from the scavenging port 11 side of the engine into the scavenging trunk chamber 25 (25A, 25B) is shielded by the upper fixing member 57, Further, it flows along the inclined surface 57I, passes by a distance L from the front surface 24F of the water droplet separator 24 by the extension amount L of the front extension 72, and falls to the bottom of the scavenging trunk primary chamber 25A. At this time, the drain oil DO falls on the other side of the shield plate 36 as viewed from the water droplet separator 24. Therefore, the drain oil DO can be prevented from adhering to the water droplet separator 24.
  • the water droplet separator contamination preventing structure 71 since the front end portion of the upper fixing member 57 can be directly fastened with the bolt 73 without using the space collar, it is similar to the water droplet separator contamination preventing structure 47 of the first embodiment. In addition, while preventing the water droplet separator 24 from being contaminated, the number of parts can be reduced, the assembly can be facilitated, and the manufacturing cost can be reduced.
  • the present invention is not limited to only the configuration of the above embodiment, and modifications and improvements can be made as appropriate without departing from the scope of the present invention, and such modifications and improvements can be made.
  • the form is also included in the scope of the present invention.
  • the water droplet separator pollution prevention structure according to the present invention can be applied not only to a diesel engine but also to other types of engines as long as the engine is equipped with a turbocharger. When applied to a diesel engine, it may not necessarily be a uniflow two-stroke diesel engine. Furthermore, it can be widely applied to engines other than ships.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Ocean & Marine Engineering (AREA)
  • Supercharger (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

Une configuration simple et peu onéreuse permet d'empêcher l'huile de vidange revenant depuis le côté orifice de balayage d'un moteur d'adhérer à un séparateur de gouttelettes d'eau. Une structure de prévention de contamination (47) pour séparateur de gouttelettes d'eau à air de balayage est dotée d'un refroidisseur d'air, d'un séparateur de gouttelettes d'eau (24) et une chambre-caisson de balayage (25) dans l'ordre cité depuis un côté compresseur d'alimentation dans un tuyau de guidage d'air (22) reliant un compresseur d'alimentation et un orifice de balayage du moteur, et lorsque la chambre-caisson de balayage (25) s'étend vers l'emplacement au-dessus du séparateur de gouttelettes d'eau (24) et est reliée à l'orifice de balayage, un élément de fixation supérieur (57) destiné à fixer la section supérieure du séparateur de gouttelettes d'eau (24) dans le tuyau de guidage d'air (22) a la forme d'un couvercle recouvrant la surface supérieure du séparateur de gouttelettes d'eau (24), et l'extrémité côté chambre-tronc de balayage (25) de l'élément de fixation supérieur (57) s'étend à la manière d'un avant-toit et une section étendue du côté avant (62) est formée, de sorte que l'huile de vidange, gouttant depuis le côté orifice de balayage dans la chambre-tronc de balayage (25) après l'arrêt du moteur, ne tombe pas sur le séparateur de gouttelettes d'eau (24).
PCT/JP2012/073337 2011-09-14 2012-09-12 Structure de prévention de la contamination pour séparateur de gouttelettes d'eau à air de balayage, et cuve dotée de la structure de prévention de la contamination pour séparateur de gouttelettes d'eau à air de balayage WO2013039106A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201280043635.9A CN103782006B (zh) 2011-09-14 2012-09-12 扫除空气的水滴分离器污染防止结构及具备该结构的船舶
KR1020157034400A KR20150140873A (ko) 2011-09-14 2012-09-12 소제 공기의 수적 분리기 오염 방지 구조 및 이것을 구비한 선박
KR1020147005983A KR101763566B1 (ko) 2011-09-14 2012-09-12 소제 공기의 수적 분리기 오염 방지 구조 및 이것을 구비한 선박

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-200804 2011-09-14
JP2011200804A JP5665701B2 (ja) 2011-09-14 2011-09-14 掃除空気の水滴分離器汚染防止構造およびこれを備えた船舶

Publications (1)

Publication Number Publication Date
WO2013039106A1 true WO2013039106A1 (fr) 2013-03-21

Family

ID=47883331

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/073337 WO2013039106A1 (fr) 2011-09-14 2012-09-12 Structure de prévention de la contamination pour séparateur de gouttelettes d'eau à air de balayage, et cuve dotée de la structure de prévention de la contamination pour séparateur de gouttelettes d'eau à air de balayage

Country Status (4)

Country Link
JP (1) JP5665701B2 (fr)
KR (2) KR20150140873A (fr)
CN (1) CN103782006B (fr)
WO (1) WO2013039106A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015078606A (ja) * 2013-10-15 2015-04-23 コベルコ建機株式会社 建設機械の排気構造
EP3396292A4 (fr) * 2015-12-25 2019-08-21 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Refroidisseur de gaz

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103644761B (zh) * 2013-11-13 2015-11-11 张玉龙 船舶主机空冷器冷凝水自动排放阀箱
CN106930823A (zh) * 2015-12-31 2017-07-07 沪东重机有限公司 涡轮增压扫气装置
JP6395785B2 (ja) * 2016-09-30 2018-09-26 川崎重工業株式会社 船舶用エンジンシステム
JP6900886B2 (ja) * 2017-11-29 2021-07-07 トヨタ自動車株式会社 車両制御装置
KR20220090567A (ko) * 2020-01-29 2022-06-29 미츠비시 조우센 가부시키가이샤 배기 가스 정화 장치, 선박

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036908U (fr) * 1973-08-07 1975-04-17
JPH01111141U (fr) * 1987-09-16 1989-07-26
JPH11350964A (ja) * 1998-06-10 1999-12-21 Mitsubishi Heavy Ind Ltd 内燃機関の給気装置
JP2004044593A (ja) * 2002-07-09 2004-02-12 Waertsilae Schweiz Ag ２ストローク往復動内燃機関の作動方法
JP2004211652A (ja) * 2003-01-08 2004-07-29 Mitsubishi Heavy Ind Ltd 空気冷却器付き内燃機関の空気ダクト構造

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04233878A (ja) 1990-12-28 1992-08-21 Sharp Corp テレビジョン装置
DK173569B1 (da) * 1998-02-11 2001-03-19 Man B & W Diesel As Trykladet forbrændingsmotor af dieseltypen med ladeluftvandudskiller

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036908U (fr) * 1973-08-07 1975-04-17
JPH01111141U (fr) * 1987-09-16 1989-07-26
JPH11350964A (ja) * 1998-06-10 1999-12-21 Mitsubishi Heavy Ind Ltd 内燃機関の給気装置
JP2004044593A (ja) * 2002-07-09 2004-02-12 Waertsilae Schweiz Ag ２ストローク往復動内燃機関の作動方法
JP2004211652A (ja) * 2003-01-08 2004-07-29 Mitsubishi Heavy Ind Ltd 空気冷却器付き内燃機関の空気ダクト構造

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015078606A (ja) * 2013-10-15 2015-04-23 コベルコ建機株式会社 建設機械の排気構造
EP3396292A4 (fr) * 2015-12-25 2019-08-21 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Refroidisseur de gaz
US11371787B2 (en) 2015-12-25 2022-06-28 Kobelco Compressors Corporation Gas cooler

Also Published As

Publication number Publication date
CN103782006A (zh) 2014-05-07
KR20140047153A (ko) 2014-04-21
JP2013060919A (ja) 2013-04-04
CN103782006B (zh) 2017-07-28
JP5665701B2 (ja) 2015-02-04
KR101763566B1 (ko) 2017-08-14
KR20150140873A (ko) 2015-12-16

Similar Documents

Publication Publication Date Title
WO2013039106A1 (fr) Structure de prévention de la contamination pour séparateur de gouttelettes d'eau à air de balayage, et cuve dotée de la structure de prévention de la contamination pour séparateur de gouttelettes d'eau à air de balayage
US6345614B1 (en) Separator and oil trap for closed crankcase ventilator systems
US4501234A (en) Blow-by gas passage system for internal combustion engines
US8511291B2 (en) Positive crankcase ventilation system, cylinder head used for positive crankcase ventilation system, internal combustion engine including positive crankcase ventilation system, and positive crankcase ventilation method
US8408190B2 (en) Air-oil separator for extracting oil from engine blowby gas
JP5964285B2 (ja) 内燃機関
US20100313860A1 (en) Apparatus for removal of oil from positive crankcase ventilation system
JP2009203977A (ja) 内燃機関のブリーザ装置
JP5906758B2 (ja) ブローバイガス処理装置のオイルセパレータ
JP2010174734A (ja) 内燃機関のブローバイガス還元装置
WO2006049888A1 (fr) Systeme de suralimentation interne pour moteurs
US11047274B2 (en) Air-oil separator
JP2888383B2 (ja) 内燃機関のブリーザ室配置構造
JP6394215B2 (ja) 内燃機関のオイル分離構造
US8505520B2 (en) Engine assembly including positive crankcase ventilation with oil surge protection
JP2002242650A (ja) エンジン用気液分離装置
WO2016143501A1 (fr) Mécanisme de séparation de brouillard d'huile pour moteur à combustion interne
KR100785145B1 (ko) 차량용 엔진
JP7003508B2 (ja) エアクリーナ
JPS6218644Y2 (fr)
JPS61223214A (ja) 過給機付内燃機関に於ける吸気装置
JP5846059B2 (ja) エンジンのオイル分離装置
JPH11159316A (ja) 内燃機関
JP2002242648A (ja) エンジン用気液分離装置
JP2011043133A (ja) エンジンのブローバイガス還元装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12831743

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20147005983

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12831743

Country of ref document: EP

Kind code of ref document: A1