US20050255762A1 - Exhaust process and system and cooling of gases from thermodynamic machines on ships - Google Patents

Exhaust process and system and cooling of gases from thermodynamic machines on ships Download PDF

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Publication number
US20050255762A1
US20050255762A1 US11/095,384 US9538405A US2005255762A1 US 20050255762 A1 US20050255762 A1 US 20050255762A1 US 9538405 A US9538405 A US 9538405A US 2005255762 A1 US2005255762 A1 US 2005255762A1
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US
United States
Prior art keywords
water
ship
mixing
inlet chamber
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/095,384
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English (en)
Inventor
Jean-Edmond Chaix
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe Technique pour lEnergie Atomique Technicatome SA
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Societe Technique pour lEnergie Atomique Technicatome SA
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.)
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Assigned to SOCIETE TECHNIQUE POUR L'ENERGIE ATOMIQUE TECHNICATOME reassignment SOCIETE TECHNIQUE POUR L'ENERGIE ATOMIQUE TECHNICATOME ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHAIX, JEAN-EDMOND
Publication of US20050255762A1 publication Critical patent/US20050255762A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/004—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 specially adapted for marine propulsion, i.e. for receiving simultaneously engine exhaust gases and engine cooling water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
    • 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

  • thermodynamic machines such as, inter alia, gas turbines and internal combustion engines discharging high-temperature gases.
  • a particularly advantageous application is provided for aircraft carriers.
  • the aim of the invention is to rectify these disadvantages by proposing another way of evacuating exhaust gases from such thermodynamic machines on ships.
  • a first principal object of the invention is a process for exhaust and cooling of exhaust gases from thermodynamic machines provided for propelling a ship, the process consisting of cooling the exhaust gas by mixing in water on which the ship manoeuvres.
  • the principal embodiment provides creating natural circulation of water inside the ship, from the prow to the stern, for cool processing by mixing gases in water which is injected into the gases, such injection taking place in an inlet chamber by means of several nozzles to homogenise the mixture, this mixture being advantageously made by means of a mixing tube where the mixing pipes emerge, in the aim of lowering the pressure and thus recovering energy, and evacuation of the mixture thus obtained takes place just above the water line.
  • This process can be improved by using forced injection of water, for example using a circulation pump.
  • a second principal object of the invention is a system for exhausting and cooling exhaust gases from thermodynamic propulsion machines of a ship, mainly comprising:
  • the principal embodiment provides utilising a circulation pump in the water inlet pipe to force the admission of water.
  • the mixing pipe has a length equal to approximately six times its diameter at the outlet of the inlet chamber, a mixing tube is used at the outlet of the mixing pipe with the aim of lowering the pressure of the mixture at this level, and the mixture exits at the stern of the ship, below the water line, in such a way as not to cause rising air movements.
  • FIG. 1 illustrates a diagram relative to the process and the system according to the invention
  • FIG. 2 schematically illustrates a ship on which is installed the system according to the invention.
  • FIG. 3 schematically illustrates the stern of the ship on which is installed the system according to the invention.
  • the system according to the invention comprises a scope 3 whereof the opening is turned to the front of the ship, that is, when the latter advances, such that water enters it.
  • the utilisation of such a scope 3 allows the water circuit to advantageously trap water by benefiting from the effect of the wake of the ship at high speed. It is prolonged by an internal water inlet pipe 5 on the ship. Placed on the latter or in front of same is a circulation pump 4 for reinforcing the injection of water into the water inlet pipe 5 which acts as an ejector exhaust pipe.
  • thermodynamic machines for propelling the ship namely diesel or gas turbine motors
  • a gases exhaust collector 11 terminates in an inlet chamber 6 , in which water nozzles 12 are also installed where the water inlet pipe 5 terminates.
  • the inlet chamber 6 is advantageously equipped with a mixer head 13 which helps accelerate the exhaust gases. This mixer head 13 terminates in a radial plane of the inlet chamber 6 in which the water nozzles 12 terminate.
  • the velocity of water in the internal water inlet pipe 5 produces low pressure in the inlet chamber 6 , which favours the escape of exhaust gases from the machines.
  • this mixing pipe 7 In order to diminish the force dissipated by such a process, by means of this system, a mixing tube 8 is placed at the outlet of the mixing pipe 7 to slow down the double-phase mixing and to recover maximum pressure. During this slow-down phase, exhaust gases whose temperature at the outlet of the machines can reach 500° C., are cooled by contact to a temperature approaching that of the trapped water. It is thus envisaged to trap water at 15° and to reject double-phase mixing at 25°.
  • FIG. 2 schematically illustrates a ship of large tonnage, namely an aircraft carrier 1 , surmounted with its upper structure 2 , without a chimney.
  • the system according to the invention is placed in 1 a lower part of the aircraft carrier 1 , to the stern thereof.
  • the scope 3 is immersed to the level of the lower part of the hull, the circulation pump 4 is placed inside the aircraft carrier.
  • the terminal part of the system, constituted by the inlet chamber 6 , of the mixing pipe 7 and of the mixing tube 8 can be placed outside the hull of the ship.
  • the mixing tube 8 is placed just above the water surface, below the level of the bridge 17 of the aircraft carrier 1 .
  • the system according to the invention is installed in the stern region of the aircraft carrier 1 , below the bridge 13 thereof.
  • This figure illustrates four thermodynamic machines 14 , for example diesel motors whereof exhaust gases are collected via exhaust tubes 15 .
  • Each of them terminates in a exchanger 16 of the high-temperature type, which helps trap a part of the thermal energy originating from these exhaust gases, with the aim of operating machine installations or devices of the aircraft carrier 1 .
  • a particular example is the propulsion catapults for the aircraft. In effect, it is possible to extract 10 to 20% of the energy from these gases to feed the catapults with steam.
  • the gases thus partially cooled, but still at a temperature of several hundred degrees Celsius, are conveyed by exhaust collectors 11 , each terminating in an inlet chamber 6 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)
US11/095,384 2004-04-07 2005-03-31 Exhaust process and system and cooling of gases from thermodynamic machines on ships Abandoned US20050255762A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0450700 2004-04-07
FR0450700A FR2868810B1 (fr) 2004-04-07 2004-04-07 Procede et systeme d'echappement et de refroidissement des gaz de machines thermodynamiques sur les navires

Publications (1)

Publication Number Publication Date
US20050255762A1 true US20050255762A1 (en) 2005-11-17

Family

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Family Applications (1)

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US11/095,384 Abandoned US20050255762A1 (en) 2004-04-07 2005-03-31 Exhaust process and system and cooling of gases from thermodynamic machines on ships

Country Status (3)

Country Link
US (1) US20050255762A1 (fr)
EP (1) EP1584803A1 (fr)
FR (1) FR2868810B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2469320A (en) * 2009-04-08 2010-10-13 Krystallon Ltd A marine vessel having a fluid discharge pipe and means for promoting mixing of discharge
CN112357039A (zh) * 2020-10-28 2021-02-12 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) 动力设备壳侧冷却换热系统

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2898387A1 (fr) 2006-03-13 2007-09-14 Giat Ind Sa Dispositif de diminution de la temperature d'un panache d'echappement
CN112357042B (zh) * 2020-10-28 2023-11-10 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) 船舶动力设备舷外冷却换热系统
CN112357038B (zh) * 2020-10-28 2021-11-09 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) 蒸汽动力式舷外共形冷却系统
CN112357040B (zh) * 2020-10-28 2021-11-16 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) 船舶柴油动力系统
CN112357043B (zh) * 2020-10-28 2021-11-12 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) 船舶柴油动力系统
CN112339961B (zh) * 2020-10-28 2022-06-07 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) 用于船舶的蒸汽动力舷外冷却系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353336A (en) * 1965-10-19 1967-11-21 Edward A Caballero Exhaust gas treatment device
US3630030A (en) * 1970-02-09 1971-12-28 Donaldson Co Inc Liquid-attenuated exhaust system
US4100994A (en) * 1976-07-15 1978-07-18 Penn Yan Boats, Incorporated Marine exhaust silencer
US4643272A (en) * 1985-05-30 1987-02-17 Gaffrig James W Marine muffler for water-cooled internal combustion engines
US4991546A (en) * 1988-07-05 1991-02-12 Sanshin Kogyo Kabushiki Kaisha Cooling device for boat engine
US6406344B1 (en) * 2000-06-01 2002-06-18 Bombardier Motor Corporation Of America Marine exhaust with dual cooling

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB152385A (fr) *
GB249518A (en) * 1925-03-17 1927-06-09 Georges Felix Brut Improvements in exhaust devices for motor car, aeroplane and the like internal combustion engines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353336A (en) * 1965-10-19 1967-11-21 Edward A Caballero Exhaust gas treatment device
US3630030A (en) * 1970-02-09 1971-12-28 Donaldson Co Inc Liquid-attenuated exhaust system
US4100994A (en) * 1976-07-15 1978-07-18 Penn Yan Boats, Incorporated Marine exhaust silencer
US4643272A (en) * 1985-05-30 1987-02-17 Gaffrig James W Marine muffler for water-cooled internal combustion engines
US4991546A (en) * 1988-07-05 1991-02-12 Sanshin Kogyo Kabushiki Kaisha Cooling device for boat engine
US6406344B1 (en) * 2000-06-01 2002-06-18 Bombardier Motor Corporation Of America Marine exhaust with dual cooling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2469320A (en) * 2009-04-08 2010-10-13 Krystallon Ltd A marine vessel having a fluid discharge pipe and means for promoting mixing of discharge
CN112357039A (zh) * 2020-10-28 2021-02-12 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) 动力设备壳侧冷却换热系统

Also Published As

Publication number Publication date
EP1584803A1 (fr) 2005-10-12
FR2868810A1 (fr) 2005-10-14
FR2868810B1 (fr) 2008-07-18

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Owner name: SOCIETE TECHNIQUE POUR L'ENERGIE ATOMIQUE TECHNICA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHAIX, JEAN-EDMOND;REEL/FRAME:016642/0682

Effective date: 20050520

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION