Heat shield for a gas turbine combustion chamber

{
  "publication_number": "US10591162B2",
  "country": "US",
  "kind": "B2",
  "title": "Heat shield for a gas turbine combustion chamber",
  "abstract": "The present invention relates to a combustion chamber heat-shielding element of a gas-turbine, having a bolt for mounting the combustion chamber heat-shielding element on a combustion chamber wall or a combustion chamber head, where the combustion chamber heat-shielding element is designed substantially plate-like and where on one side at least one bolt, which is designed as a separate component, is anchored on it by means of a bonded connection.",
  "claims": [
    "1. A combustion chamber heat-shielding arrangement of a gas-turbine, comprising: a combustion chamber heat-shielding element having a plate shape, a bolt for mounting the combustion chamber heat-shielding element on a combustion chamber wall or a combustion chamber head, the bolt configured as a separate component from the combustion chamber heat-shielding element, the bolt having a first end having a non-cylindrical contoured base for anchoring to the combustion chamber heat-shielding element, a receptacle provided on the combustion chamber heat-shielding element, the receptacle including a non-cylindrical recess shaped for receiving the non-cylindrical contoured base of the first end of the bolt in a form fitting and rotational preventing locking manner, an adhesive bonded connection connecting the first end of the bolt to the non-cylindrical recess, the adhesive bonded connection consisting of the first end of the bolt, the non-cylindrical recess and an adhesive positioned between and connecting the first end of the bolt to the non-cylindrical recess, wherein the adhesive consists of a high-temperature resistant metal adhesive resistant to temperatures of at least 1000° C., wherein the receptacle includes effusion cooling holes.",
    "2. The combustion chamber heat-shielding arrangement in accordance with claim 1, wherein the first end of the bolt is unthreaded.",
    "3. The combustion chamber heat-shielding arrangement in accordance with claim 2, wherein the receptacle is one piece with the combustion chamber heat-shielding element.",
    "4. The combustion chamber heat-shielding arrangement in accordance with claim 3, wherein the combustion chamber heat-shielding element is manufactured by an additive manufacturing method.",
    "5. The combustion chamber heat-shielding arrangement in accordance with claim 2, wherein the combustion chamber heat-shielding element is at least one chosen from a combustion chamber tile and a heat shield.",
    "6. The combustion chamber heat-shielding arrangement in accordance with claim 1, wherein the receptacle is one piece with the combustion chamber heat-shielding element.",
    "7. The combustion chamber heat-shielding arrangement in accordance with claim 1, wherein the combustion chamber heat-shielding element is manufactured by an additive manufacturing method.",
    "8. The combustion chamber heat-shielding arrangement in accordance with claim 1, wherein the combustion chamber heat-shielding element is at least one chosen from a combustion chamber tile and a heat shield."
  ],
  "description_excerpt": "This application claims priority to German Patent Application DE102013223258.6 filed Nov. 14, 2013, the entirety of which is incorporated by reference herein.\n\nThis invention relates to gas-turbine combustion chambers with combustion chamber tiles and/or heat shields, where the combustion chamber tiles or heat shields are fastened to a supporting structure of the combustion chamber outer walls or to the combustion chamber head, respectively.\n\nThe combustion chamber tiles have an arbitrary number (very high, often in the thousands) of effusion cooling holes on the side facing the combustion chamber. These effusion cooling holes are used to cool the tile against the high temperatures prevailing in the combustion chamber. Moreover, at least one mixing air hole can be located on the combustion chamber tile and is used to pass air from the space (annulus) surrounding the combustion chamber on the outside into the combustion chamber, for the purpose of cooling the combustion and making it lean, thereby reducing the amount of NOx generated. In addition to cooling by the effusion cooling holes, the tiles are frequently also provided with a ceramic coating acting as an insulating layer against the high temperatures in the combustion chamber.\n\nThe heat shields have an arbitrary (very high) number of effusion cooling holes on the side facing the combustion chamber. These holes are used to cool the heat shield against the high temperatures prevailing in the combustion chamber.",
  "cpc": [
    "F23R 3/002",
    "F16B 11/006",
    "F16B 21/12",
    "F16B 37/048",
    "F16B 5/02",
    "F23R 2900/00017",
    "F23R 2900/03041",
    "F23R 3/60"
  ],
  "ipc": [
    "F16B 11/00",
    "F16B 21/12",
    "F16B 37/04",
    "F16B 5/02",
    "F23R 3/00",
    "F23R 3/60"
  ],
  "assignees": [
    "Rolls Royce Deutschland Ltd and Co KG"
  ],
  "inventors": [
    "Carsten Clemen"
  ],
  "filing_date": "2014-11-12",
  "publication_date": "2020-03-17",
  "grant_date": "2020-03-17",
  "priority_date": "2013-11-14",
  "application_number": "US-201414539236-A",
  "family_id": "51868849",
  "cited_by_count": 3,
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}