WO1996027113A1 - Anordnung zur gaszufuhr für hochtemperatur-bauelemente - Google Patents
Anordnung zur gaszufuhr für hochtemperatur-bauelemente Download PDFInfo
- Publication number
- WO1996027113A1 WO1996027113A1 PCT/EP1996/000727 EP9600727W WO9627113A1 WO 1996027113 A1 WO1996027113 A1 WO 1996027113A1 EP 9600727 W EP9600727 W EP 9600727W WO 9627113 A1 WO9627113 A1 WO 9627113A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- component according
- elements
- temperature component
- components
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
Definitions
- the invention relates to an arrangement for supplying gas for high-temperature components according to the preamble of claim 1.
- connection elements In the case of high-temperature components such as heat exchangers flowing through in a cross flow, a gas-tight separation of the gas spaces must be ensured in particular if combustible gases are contained in one of the gas flows. If these building blocks are made of a ceramic material, bonding or sintering of the connection elements is ruled out because different temperatures in the building blocks cause expansions that lead to mechanical stresses in the ceramic building blocks and, as a result, cracks in the building blocks cannot be excluded . It is therefore important not to generate additional voltages by connecting the connection elements to the high-temperature components.
- stacks of fuel cells leads to additional voltages in the stack, which in particular when switching the stack on and off can lead to cracks in the stack or in the connection area of the gas feeds.
- stacks of fuel cells stacks of fuel cells
- connection elements mechanically via sealing elements on heat exchanger construction systems and to make these contact forces largely independent of the thermal expansions of the heat exchangers via spring elements.
- connection elements are not suitable for components which operate at high temperatures of up to about 1000 ° C. and in which the connecting elements for the gas supply are also used
- the invention has for its object to provide an arrangement in which connections to components can be made gastight at high temperatures and for several years of operation.
- the invention is also suitable for gas-tight connections between components which are exposed to high temperatures.
- Such components le can be flanges for lines or venti le or connecting elements for heat exchangers or fuel cells.
- Essential to the invention is the construction of the seal from at least one plastic at the operating temperature, which retains its properties at high temperatures even against the attack of the process gas, which is conducted in the pipe system and prevented by the seal from escaping into the exterior should.
- connection elements 1 shows a cross section through a high-temperature component with connection elements.
- Fi g. 2 a connecting element with a metal jacket
- Fig. 5 shows the arrangement of connection elements for two modules
- Fig. 6 shows a special, in cross-section it semicircular design of the connection elements.
- the components 1 (see FIG. 1) and the connecting elements 2, 2 ', 3 and 3' are thermally insulated to such an extent that outside of this thermal insulation 4 temperatures occur which are harmless to metallic springs 7.
- This inner thermal insulation 4 for example, reduces a temperature of 1000 ° C. inside the building blocks 1 to 200 ° C. outside the insulation.
- the forces for pressing the connecting elements onto the building blocks are transmitted via thermal insulating elements 4 with the aid of clamping devices 6.
- the tensioning devices press with the help of prestressed springs 7, the lateral thermal insulating elements 4 against the connecting elements 2, 2 ', 3, 3' for the different gases.
- seals 5 made of a plastic mass at high temperatures are preferably used.
- the insulating compound is applied in a particularly advantageous manner to the flat sealing surfaces 8 and, in the plastic state, can compensate for changes in the distance between the high-temperature component and the connecting elements.
- the thermal insulation can also be carried out in the corners with the aid of further insulating elements.
- the contact forces are applied by the differential pressure between the pressure in the space outside the internal thermal insulation and the pressure inside the building blocks 1 (see FIG. 2).
- the pressure P i is approximately 2 ⁇ 10 5 Pa and the pressure P 2 * 1 • 10 5 Pa.
- the high-temperature component including connection elements and insulating elements is held by supports 14 in a metal jacket 11. This metal jacket is lined again on the inside with an external thermal insulating element.
- the supports 14 have openings so that the gas pressure P 2 can have an effect on all sides of the internal arrangement of components and a reliable sealing takes place. Building blocks can be stacked into columns and the stacks can be pressed together in the manner described, as shown in FIG. 3.
- the blocks for different functions are provided with the same matching surfaces, so that a column of z. B. heat exchangers, afterburner, reformer and gas distributor. This avoids lossy piping between the building blocks and costly thermal insulation of the pipes.
- the space outside the inner thermal insulation 4, 9, in which the tensioning elements including the springs 7 are located, is closed off from the environment by a second, outer thermal insulation.
- This outer thermal insulation is expediently closed off to the outside by a metal jacket, which absorbs the pressure in the space between the inner and the outer thermal insulation.
- the fresh air can be conducted for preheating through the space between the inner and outer insulation.
- the sealing elements that come into direct contact with the stacks are produced according to the invention from a material that does not conduct ions or electrons (see FIG. 4).
- a further sealant which is plastic at high temperatures can then be applied to these sealing elements. This type of sealing is particularly necessary for the connection elements, which contain hydrogen.
- the profiles for the connection elements can be made arbitrarily, for example, rectangular or semicircular (Fig. 6).
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Gasket Seals (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96904842A EP0757777A1 (de) | 1995-02-25 | 1996-02-22 | Anordnung zur gaszufuhr für hochtemperatur-bauelemente |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19506690.1 | 1995-02-25 | ||
DE1995106690 DE19506690A1 (de) | 1995-02-25 | 1995-02-25 | Anordnung zur Gaszufuhr für Hochtemperatur-Bauelemente |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996027113A1 true WO1996027113A1 (de) | 1996-09-06 |
Family
ID=7755081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/000727 WO1996027113A1 (de) | 1995-02-25 | 1996-02-22 | Anordnung zur gaszufuhr für hochtemperatur-bauelemente |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0757777A1 (de) |
CA (1) | CA2188805A1 (de) |
DE (1) | DE19506690A1 (de) |
WO (1) | WO1996027113A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007011793A1 (de) * | 2007-03-12 | 2008-09-18 | Mtu Cfc Solutions Gmbh | Dichtungsvorrichtung für eine Brennstoffzellenanordnung |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10308382B3 (de) * | 2003-02-27 | 2004-11-11 | Forschungszentrum Jülich GmbH | Verspannung eines Hochtemperatur-Brennstoffzellenstapels |
DE102004037678A1 (de) * | 2004-08-02 | 2006-03-16 | Webasto Ag | Brennstoffzellenstapel |
JP4598510B2 (ja) * | 2004-12-22 | 2010-12-15 | 本田技研工業株式会社 | 燃料電池システム |
DE102006060810B4 (de) * | 2006-12-21 | 2015-01-15 | Staxera Gmbh | Gehäuse zur Aufnahme und Verspannung zumindest eines Brennstoffzellenstapels sowie Brennstoffzellensystem |
US8968956B2 (en) | 2010-09-20 | 2015-03-03 | Nextech Materials, Ltd | Fuel cell repeat unit and fuel cell stack |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2529358A1 (de) * | 1974-07-11 | 1976-01-29 | Advanced Materials Eng | Waermetauscher |
US4262740A (en) * | 1979-02-07 | 1981-04-21 | Heinz Brune | Casings for heat exchangers and burner/recuperator assemblies incorporating such casings |
GB2147095A (en) * | 1983-09-19 | 1985-05-01 | Gte Prod Corp | Heat recuperator with cross-flow ceramic core |
-
1995
- 1995-02-25 DE DE1995106690 patent/DE19506690A1/de not_active Ceased
-
1996
- 1996-02-22 WO PCT/EP1996/000727 patent/WO1996027113A1/de not_active Application Discontinuation
- 1996-02-22 EP EP96904842A patent/EP0757777A1/de not_active Withdrawn
- 1996-02-22 CA CA 2188805 patent/CA2188805A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2529358A1 (de) * | 1974-07-11 | 1976-01-29 | Advanced Materials Eng | Waermetauscher |
US4262740A (en) * | 1979-02-07 | 1981-04-21 | Heinz Brune | Casings for heat exchangers and burner/recuperator assemblies incorporating such casings |
GB2147095A (en) * | 1983-09-19 | 1985-05-01 | Gte Prod Corp | Heat recuperator with cross-flow ceramic core |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007011793A1 (de) * | 2007-03-12 | 2008-09-18 | Mtu Cfc Solutions Gmbh | Dichtungsvorrichtung für eine Brennstoffzellenanordnung |
US8460837B2 (en) | 2007-03-12 | 2013-06-11 | Uwe Burmeister | Sealing device for a fuel cell arrangement |
Also Published As
Publication number | Publication date |
---|---|
DE19506690A1 (de) | 1996-08-29 |
EP0757777A1 (de) | 1997-02-12 |
CA2188805A1 (en) | 1996-09-06 |
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