US3220386A - Combustion chamber particularly for magneto-gas-dynamic machines - Google Patents

Combustion chamber particularly for magneto-gas-dynamic machines Download PDF

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Publication number
US3220386A
US3220386A US297054A US29705463A US3220386A US 3220386 A US3220386 A US 3220386A US 297054 A US297054 A US 297054A US 29705463 A US29705463 A US 29705463A US 3220386 A US3220386 A US 3220386A
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United States
Prior art keywords
combustion chamber
gas
magneto
cladding
wall
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Expired - Lifetime
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US297054A
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English (en)
Inventor
Gallant Hermann
Kind Camillo
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BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
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BBC Brown Boveri France SA
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K44/00—Machines in which the dynamo-electric interaction between a plasma or flow of conductive liquid or of fluid-borne conductive or magnetic particles and a coil system or magnetic field converts energy of mass flow into electrical energy or vice versa
    • H02K44/08—Magnetohydrodynamic [MHD] generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K44/00—Machines in which the dynamo-electric interaction between a plasma or flow of conductive liquid or of fluid-borne conductive or magnetic particles and a coil system or magnetic field converts energy of mass flow into electrical energy or vice versa
    • H02K44/08—Magnetohydrodynamic [MHD] generators
    • H02K44/12—Constructional details of fluid channels

Definitions

  • the present invention relates to a combustion chamber with special reference to those used in conjunction with magneto-gas-dynamic generators for supplying a hot ionized fluid for ow through the generator.
  • a metallic wall is then chosen if either heat is to be drawn directly from llames (boiler) or high heat losses to the wall are not of disadvantage (gas-turbines).
  • the designs employed heretofore for combustion-chamber claddings are thus unsuitable for machines of this type.
  • the present invention has for its object the creation of a combustion chamber suitable for such use.
  • the invention is distinguished by one or more cladding elements consisting at least partially of ceramic and being held in place with cooled support-pieces.
  • FIG. 1 is a section taken on line 1-1 of FIG. 2 through part -of a combustion chamber, schematically represented;
  • FIG. 2 a view of the eros-section part represented in FIG. l;
  • FIG. 3 ' shows a cladding element from the front
  • FIG. 4 is a cross-section from another embodiment of combustion-chamber, analogous to FIG. l;
  • FIG. 5 is a cross sectional view similar to FIG. 1 showing a further modied construction wherein the plugs which support the cladding elements are made in hollowvform;
  • FIG. 6 is a view in longitudinal section showing a portion of the interior of the combustion chamber.
  • a combustionchamber 1 for a magnetic-gas-dynamic generator machine - is cladded with ⁇ small plate-elements 2, made from a reresisting material which is preferably ceramic or a corresponding material with ceramic additives.
  • a suitable all-ceramic material is, for example, a sintered metal oxide, carbide, silicate orboride.
  • a suitable compound for the plate-elements 2 is one made of ceramic and metal such as the so-call-ed Cermet
  • Each of these claddingelements 2 is provided with a conical boring 3.
  • a cooling system On the side of elements 2 facing away from combustion chamber 1 is situated a cooling system, a cooling tube 5 of which latter being depicted in FIGURES l and 2.
  • Tube 5 is the support for the holding pieces shown as plugs 7, the latter serving to accept cladding elements 2.
  • Elements 2 are borne on plug 7 due to the insertion of a conical tightening ring 9 within the bore 3 and are held in place by means of bearing-ring 8 and nut 10. They are free to expand in all directions by which means the occurrence of thermal stresses and the danger of breakage of elements is avoided.
  • Plug 7 can be either a solid plug, as is to be seen in FIG. l, or provided with bores for the circulation of coolant 6.
  • FIG. 5 An example of a bored construtcion is illustrated in FIG. 5, the longitudinally extending bore in plug 7 being of U-form and so arranged that one leg 11a of the bore communicates with one circumferential half portion ofv the interior of tube 5 while the other leg 11b of the bore communicates with the other circumferential half portion of tube 5, the two circumferential half portions of the tube being established by a partition wall 12 within the tube.
  • the coolant flows through the U-formed bore 11a, 11b in the directions indicated by the arrows out of and then back into the half sections of the interior of tube 5.
  • the plugs 7 are attached to cooling tube 5 by soldering or welding, as is shown in FIG. l.
  • Bearing ring 8 and tightening ring 9 should preferably be made from ceramic material with a low coeiiicient of thermal conductivity.
  • a closure-ring can be employed which is then soldered to plug 7.
  • FIG. 4 is represented a further constructional form of combustion-chamber cladding according to the invention wherein the cladding elements 2 are fixed to plugs 15 driven into a cooling wall 16, the conically formed end-piece of each plug being entered into a conical boring 3 provided in each cladding element 2.
  • each cladding element 2 is iixed .in place in the plug 15 by means of a headed bolt 18 which is screwed into the end of the plug.
  • Cooling wall 16 is provided with coolant channels 17.
  • cooling wall 16 conforms to the shape of combustion chamber 1, which is constituted by the assembly of cladding elements 2. Cooling wall 16 carries as many plugs 15 as are necessaryy to clad combustion chamber 1 with cladding elements 2.
  • adjacent clad-ding elements 2 possess sufcient play in the cold condition to avoid seaaaee 3 coming into contact in the operating condition of the combustion chamber.
  • the thickness and material of the plate-shaped cladding elements 2 should be so chosen that the temperature of the side closest to the water-cooled wall 16 or, to the water-cooled cooling-tube 5, respectively, still remains so high that the heat from the cladding elements 2 can be given up through radiation to the cooled region.
  • the plugs 7 or 15, respectively, are made from a very good heat-conducting material, e.g. copper.
  • the design as described thus allows operation of the combustion chamber with minimum heat losses and high flame temperatures.
  • a combustion chamber for a magneto-gas-dynamic generator the wall of said combustion chamber being comprised of an assembly of mutually spaced individual cladding elements made at least partially from ceramic material, a s-upporting member surrounding said combustion chamber, said supporting member including an internal channel through which a liquid coolant is circulated and support pieces having a high heat conductivity characteristic extending between and secured at opposite ends thereof -to said supporting member and to each of said cladding elements for transferring heat from said cladding elements to said liquid coolant.
  • each said plug includes a channel therein communicating with the interior of said tube for circulating the coolant.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
US297054A 1962-07-26 1963-07-23 Combustion chamber particularly for magneto-gas-dynamic machines Expired - Lifetime US3220386A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH895662A CH399075A (de) 1962-07-26 1962-07-26 Brennkammer, insbesondere für magnetogasdynamische Maschinen

Publications (1)

Publication Number Publication Date
US3220386A true US3220386A (en) 1965-11-30

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US297054A Expired - Lifetime US3220386A (en) 1962-07-26 1963-07-23 Combustion chamber particularly for magneto-gas-dynamic machines

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US (1) US3220386A (de)
CH (1) CH399075A (de)
GB (1) GB989996A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995006190A1 (en) * 1993-08-23 1995-03-02 Solinnov Napenergiával Mu^'ködo^' Berendezéseket Hasznosító, Épületkarbantartó Export-Import Kft. Steam generator and steam turbine driving unit for the use of gaseous propellant, especially hydrogen

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1019013C2 (nl) 2001-09-21 2003-03-26 Sara Lee De Nv Bereiding van cappuccino.
NL1020833C2 (nl) 2002-06-12 2003-12-15 Sara Lee De Nv Inrichting voor het bereiden van een voor consumptie geschikte drank met een fijnbellige schuimlaag.
NL1020837C2 (nl) 2002-06-12 2003-12-15 Sara Lee De Nv Inrichting en werkwijze voor het bereiden van koffie met een fijnbellige schuimlaag, in het bijzonder cappuccino.
NL1020836C2 (nl) 2002-06-12 2003-12-15 Sara Lee De Nv Inrichting en werkwijze voor het bereiden van koffie met een fijnbellige schuimlaag, in het bijzonder cappuccino.
NL1026834C2 (nl) 2004-08-12 2006-02-14 Sara Lee De Nv Bereiden van thee met behulp van een theepad en een koffiezetapparaat.
NL1028460C2 (nl) 2005-03-04 2006-09-06 Sara Lee De Nv Inrichting voor het bereiden en afgeven van al dan niet althans gedeeltelijk opgeschuimde dranken.
NL1029503C2 (nl) 2005-07-12 2007-01-15 Sara Lee De Nv Systeem en werkwijze voor het bereiden van een voor consumptie geschikte drank, alsmede een gebruik van een dergelijk systeem, een opvangkamer en een houder.
AU2008352082B2 (en) 2008-01-29 2015-05-14 Koninklijke Douwe Egberts B.V. System and method for preparing a beverage using a capsule

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919549A (en) * 1954-02-26 1960-01-05 Rolls Royce Heat-resisting wall structures
US2938333A (en) * 1957-03-18 1960-05-31 Gen Motors Corp Combustion chamber liner construction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919549A (en) * 1954-02-26 1960-01-05 Rolls Royce Heat-resisting wall structures
US2938333A (en) * 1957-03-18 1960-05-31 Gen Motors Corp Combustion chamber liner construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995006190A1 (en) * 1993-08-23 1995-03-02 Solinnov Napenergiával Mu^'ködo^' Berendezéseket Hasznosító, Épületkarbantartó Export-Import Kft. Steam generator and steam turbine driving unit for the use of gaseous propellant, especially hydrogen
CN1082607C (zh) * 1993-08-23 2002-04-10 索利诺夫.N.M.B.H.E.进出口公司 蒸气发生器和使用气体推进剂的蒸气涡轮推进单元

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Publication number Publication date
CH399075A (de) 1966-03-31
GB989996A (en) 1965-04-22

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