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JP2012149880A - Combustor, and method for repairing combustor - Google Patents

Combustor, and method for repairing combustor Download PDF

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Publication number
JP2012149880A
JP2012149880A JP2012005733A JP2012005733A JP2012149880A JP 2012149880 A JP2012149880 A JP 2012149880A JP 2012005733 A JP2012005733 A JP 2012005733A JP 2012005733 A JP2012005733 A JP 2012005733A JP 2012149880 A JP2012149880 A JP 2012149880A
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Japan
Prior art keywords
end cover
insert
combustor
ring
replacement
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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.)
Pending
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JP2012005733A
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Japanese (ja)
Inventor
C Belsom Keith
キース・シー・ベルサム
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General Electric Co
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General Electric Co
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Publication of JP2012149880A publication Critical patent/JP2012149880A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/283—Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
    • F23R3/60—Support structures; Attaching or mounting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00001—Arrangements using bellows, e.g. to adjust volumes or reduce thermal stresses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00012—Details of sealing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00017—Assembling combustion chamber liners or subparts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00019—Repairing or maintaining combustion chamber liners or subparts
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49348—Burner, torch or metallurgical lance making

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Gas Burners (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a combustor design that allows for replacement or repair of one or more braze or weld joints in an end cover.SOLUTION: A combustor (10) includes an end cover (18), and a borehole (30) through the end cover (18). The combustor (10) further includes an insert (34) in the borehole (30) in the end cover (18) and at least one continuous passage (32) through the end cover (18) and the insert (34). A ring (40) is fixedly connected to the end cover (18) with a seal (44) between the ring (40) and the insert (34). A method for repairing the combustor (10) includes fixedly connecting the ring (40) to the end cover (18) and installing the replacement insert (34) in the end cover (18). The method further includes installing the seal (44) between the ring (40) and the replacement insert (34).

Description

本発明は、全体的に、燃焼器及び燃焼器の補修方法に関する。詳細には、本発明の種々の実施形態は、燃焼器内の端部カバーを修正又は補修するためのシステム及び方法を提供する。   The present invention generally relates to a combustor and a repair method for the combustor. In particular, various embodiments of the present invention provide systems and methods for modifying or repairing an end cover in a combustor.

燃料を空気と共に点火して高温高圧の燃焼ガスを生成する燃焼器は、当該技術分野で公知である。例えば、ガスタービンシステム、航空機エンジン、及び他の多くの燃焼式システムは、１以上の燃焼器を含み、空気などの作動流体を燃料と混合させて該混合気を点火し、高温高圧の燃焼ガスを生成することができる。次いで、燃焼ガスを用いてタービンを回転させて推進力を提供し、或いは、他の様々な形態の仕事を行うことができる。   Combustors that ignite fuel with air to produce high temperature and pressure combustion gases are known in the art. For example, gas turbine systems, aircraft engines, and many other combustion systems include one or more combustors that mix a working fluid, such as air, with fuel to ignite the mixture and provide high temperature and pressure combustion gases. Can be generated. The combustion gas can then be used to rotate the turbine to provide propulsion or to perform various other forms of work.

一般に各燃焼器は、燃焼室を囲み且つ定める端部カバー及びライナを含み、作動流体が、ライナの外部に沿って流れて該ライナから熱を除去した後、１以上のノズルを通じて燃焼室に流入することができる。ノズルは、端部カバー内で半径方向に配列され、或いは、端部カバーに接続することができ、該端部カバーを通じて燃料をノズルに供給し、燃焼室内に噴射させるようにすることができる。例えば、端部カバーを通る通路は、ノズル内で相補的な通路に接続され、該端部カバー及びノズルを通じて燃焼室への流体連通を形成することができる。端部カバーと各ノズルとの間のインサートにより、単一の端部カバー設計が、燃料ノズルに空気、燃料、及び／又は他の流体を供給する複数の異なる通路に適合できるようにすることができる。インサートは、ボルト、ろう付け、又は溶接継手によって端部カバーに取り付けることができ、次いで、各ノズルは、インサート及び／又は端部カバーにボルト締め又は他の方法で取り付けられ、端部カバー、インサート、及び各ノズルを通る流体通路を完成させることができる。   Generally, each combustor includes an end cover and liner that surrounds and defines a combustion chamber, and the working fluid flows along the exterior of the liner to remove heat from the liner and then flows into the combustion chamber through one or more nozzles. can do. The nozzles can be arranged radially in the end cover or connected to the end cover, through which fuel can be supplied to the nozzle and injected into the combustion chamber. For example, the passage through the end cover can be connected to a complementary passage in the nozzle to form fluid communication to the combustion chamber through the end cover and the nozzle. The insert between the end cover and each nozzle allows a single end cover design to be adapted to multiple different passages supplying air, fuel, and / or other fluid to the fuel nozzle. it can. The insert can be attached to the end cover by bolts, brazing, or welded joints, and then each nozzle is bolted or otherwise attached to the insert and / or end cover, and the end cover, insert And fluid passages through each nozzle can be completed.

燃焼器に関連する温度変化は、端部カバーとインサートとの間に不均一な膨張をもたらす可能性がある。時間の経過に伴って、端部カバーとインサートとの間のろう付け又は溶接継手に亀裂が形成され、又は機能不良になり、場合によっては端部カバー及び／又はインサート内の種々の通路間で内部漏洩を生じる可能性がある。一部の端部カバー設計において、本願出願人に譲渡された米国特許第７１３４２８７号で開示されるように、ろう付け又は溶接継手を排除し、端部カバーとインサートとの間の１以上のシールと置き換えることができる。しかしながら、幾何学的な制約によって、一部の端部カバー設計の交換シールにおいて十分な座面が不可能になる。従って、端部カバーにおいて１以上のろう付け又は溶接継手の交換又は補修を可能にする新規の燃焼器設計が有用となる。   Temperature changes associated with the combustor can cause non-uniform expansion between the end cover and the insert. Over time, the brazed or welded joint between the end cover and the insert is cracked or malfunctions, sometimes between the end cover and / or various passages in the insert. Internal leakage may occur. In some end cover designs, one or more seals between the end cover and the insert are eliminated, as disclosed in commonly assigned U.S. Pat. No. 7,134,287, which eliminates brazing or welded joints. Can be replaced. However, geometric constraints do not allow sufficient seating in replacement seals for some end cover designs. Thus, a new combustor design that allows replacement or repair of one or more brazed or welded joints in the end cover would be useful.

米国特許第７１３４２８７号明細書US Pat. No. 7,134,287

本発明の態様及び利点については、一部は以下の詳細な説明で開示するが、以下の詳細な説明から自明であろうし、本発明を実施することによって明らかとなろう。   Some aspects and advantages of the present invention will be disclosed in the following detailed description, but will be obvious from the following detailed description, and will be apparent by practicing the present invention.

本発明の一実施形態は、端部カバーと、該端部カバーを通るボアホールとを含む燃焼器である。燃焼器は更に、端部カバーのボアホール内のインサートと、端部カバー及びインサートを通る少なくとも１つの連続通路とを含む。リングは、該リングとインサートとの間にシールを備えて端部カバーに固定接続される。   One embodiment of the present invention is a combustor that includes an end cover and a bore hole through the end cover. The combustor further includes an insert in the bore hole of the end cover and at least one continuous passage through the end cover and the insert. The ring is fixedly connected to the end cover with a seal between the ring and the insert.

本発明の別の実施形態は、端部カバーと、該端部カバーに接続されたノズルとを含む燃焼器である。燃焼器は更に、端部カバーとノズルとの間にインサートと、端部カバー及びインサートを通過する少なくとも１つの連続通路とを含む。リングは、該リングとインサートとの間にシールを備えて端部カバーに固定接続される。   Another embodiment of the present invention is a combustor including an end cover and a nozzle connected to the end cover. The combustor further includes an insert between the end cover and the nozzle and at least one continuous passage through the end cover and the insert. The ring is fixedly connected to the end cover with a seal between the ring and the insert.

本発明はまた、燃焼器を補修する方法を含む。本方法は、リングを端部カバーに固定接続する段階と、交換インサートを端部カバー内に設置する段階とを含む。本方法は更に、リングと交換インサートとの間にシールを設置する段階を含む。   The present invention also includes a method of repairing a combustor. The method includes fixedly connecting the ring to the end cover and installing a replacement insert in the end cover. The method further includes installing a seal between the ring and the replacement insert.

かかる実施形態の特徴及び態様などについては、本明細書を参照することによって理解を深めることができるであろう。   The features and aspects of such embodiments will be better understood with reference to this specification.

本発明を当業者が実施できるように、以下の詳細な説明では、図面を参照しながら、本発明を最良の形態を含めて十分に開示する。   In order that those skilled in the art will be able to practice the invention, the following detailed description fully discloses the invention, including the best mode, with reference to the drawings.

本発明の一実施形態による燃焼器の簡易断面図。The simplified sectional view of the combustor by one embodiment of the present invention. 図１に示す端部カバーの一部の拡大断面図。FIG. 3 is an enlarged cross-sectional view of a part of the end cover shown in FIG. 1. インサートが実質的に取り除かれた図２に示す端部カバーの拡大断面図。FIG. 3 is an enlarged cross-sectional view of the end cover shown in FIG. 2 with the insert substantially removed. 本発明の一実施形態による端部カバー内に交換インサートが設置された状態の図３に示す端部カバーの拡大断面図。FIG. 4 is an enlarged cross-sectional view of the end cover shown in FIG. 3 in a state where a replacement insert is installed in the end cover according to the embodiment of the present invention. 本発明の一実施形態による、図４に示すシールの拡大断面図。FIG. 5 is an enlarged cross-sectional view of the seal shown in FIG. 4 according to an embodiment of the present invention. 本発明の一実施形態による、図４に示すシールの拡大断面図。FIG. 5 is an enlarged cross-sectional view of the seal shown in FIG. 4 according to an embodiment of the present invention.

以下、本発明の実施形態について詳しく説明するが、その１以上の実施例を図面に示す。発明の詳細な説明では、図面に記載した特徴的構成を示すために数字又は文字を符号として用いる。図面及び発明の詳細な説明では、本発明の同一又は同様の部品を示すために、同一又は同様の符号を用いる。   DETAILED DESCRIPTION Reference will now be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. In the detailed description of the invention, numerals or letters are used as symbols to indicate the characteristic configurations described in the drawings. In the drawings and detailed description of the invention, the same or similar symbols are used to denote the same or similar parts of the present invention.

各実施例は例示にすぎず、本発明を限定するものではない。実際、本発明の技術的範囲又は技術的思想から逸脱せずに、本発明に様々な修正及び変形をなすことができることは当業者には明らかであろう。例えば、ある実施形態の一部として例示又は説明した特徴を、別の実施形態に用いてさらに別の実施形態としてもよい。従って、本発明は、かかる修正及び変形を特許請求の範囲で規定される技術的範囲及びその均等の範囲に属するものとして包含する。   Each example is illustrative only and does not limit the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For example, features illustrated or described as part of one embodiment may be used in another embodiment to provide still another embodiment. Accordingly, the present invention encompasses such modifications and variations as belonging to the technical scope defined by the claims and equivalents thereof.

図１は、本発明の一実施形態による燃焼器１０の簡易断面図を示している。ケーシング１２は、燃焼器１０を囲み、該燃焼器１０に流れる空気又は作動流体を収容することができる。図示のように、燃焼器１０は、頂部キャップ１６内に半径方向に配列された１以上のノズル１４を含むことができる。端部カバー１８及びライナ２０は、一般に、ノズル１４の下流側に位置する燃焼室２２を囲む。流れ孔２６を備えた流れスリーブ２４は、ライナ２０を囲んで、流れスリーブ２４とライナ２０との間に環状通路２８を定めることができる。空気又は作動流体は、流れスリーブ２４内の流れ孔２６を通過してライナ２０の外部に沿って流れ、ライナ２０にフィルム冷却又は対流冷却を提供することができる。次いで、空気又は作動流体は、反転して１以上のノズル１４を通って流れ、ここで燃料と混合した後、燃焼室２２において点火され、高温高圧の燃焼ガスを生成する。   FIG. 1 shows a simplified cross-sectional view of a combustor 10 according to one embodiment of the present invention. The casing 12 surrounds the combustor 10 and can contain air or working fluid flowing to the combustor 10. As shown, the combustor 10 may include one or more nozzles 14 arranged radially within the top cap 16. The end cover 18 and the liner 20 generally surround a combustion chamber 22 located downstream of the nozzle 14. A flow sleeve 24 with a flow hole 26 may surround the liner 20 and define an annular passage 28 between the flow sleeve 24 and the liner 20. Air or working fluid may flow along the exterior of the liner 20 through the flow holes 26 in the flow sleeve 24 to provide film cooling or convective cooling to the liner 20. The air or working fluid is then reversed and flows through one or more nozzles 14 where it mixes with fuel and then ignited in combustion chamber 22 to produce high temperature and pressure combustion gases.

図２は、本発明の種々の実施形態の改善点を導入する前の、図１に示す端部カバー１８の一部の拡大断面図を示している。図示のように、端部カバー１８は、１以上のボアホール３０と、端部カバー１８を貫通して延びる連続通路３２とを含むことができる。ボアホール３０及び連続通路３２は、端部カバー１８を通して流体連通を形成し、燃料、希釈剤、不活性ガスその他流体を端部カバー１８を通ってノズル１４に流すことができる。図２に示すように、詳細な実施形態では、ボアホール３０は、軸方向で階段状にされることにより端部カバー１８を通るボアホール３０の直径が変化し、端部カバー１８とインサート３４との間に好都合な座面を形成することができる。インサート３４は、ボアホール３０内に設置され、ボルト又は１以上のろう付け３６もしくは溶接継手によって端部カバー１８に接続することができ、ノズル１４は、インサート３４の下流側で端部カバー１８及び／又はインサート３４に接続され、インサート３４が端部カバー１８とインサート３４との間にあるようにすることができる。このようにして、ボアホール３０及び／又は通路３２内の流体は、インサート３４を通ってノズル１４に流れることができ、インサート３４と端部カバー１８との間のろう付け３６又は溶接継手が、ボアホール３０及び／又は通路３２内で流体の混ざり合い又は混合を防ぐための好適な境界を提供することができる。   FIG. 2 shows an enlarged cross-sectional view of a portion of the end cover 18 shown in FIG. 1 before introducing the improvements of various embodiments of the present invention. As shown, the end cover 18 may include one or more bore holes 30 and a continuous passage 32 extending through the end cover 18. The bore hole 30 and the continuous passage 32 form fluid communication through the end cover 18 and allow fuel, diluent, inert gas or other fluid to flow through the end cover 18 to the nozzle 14. As shown in FIG. 2, in the detailed embodiment, the bore hole 30 is stepped in the axial direction, thereby changing the diameter of the bore hole 30 passing through the end cover 18, and the end cover 18 and the insert 34. A convenient seating surface can be formed between them. The insert 34 is installed in the bore hole 30 and can be connected to the end cover 18 by bolts or one or more brazes 36 or welded joints, and the nozzle 14 is connected to the end cover 18 and / or downstream of the insert 34. Alternatively, it can be connected to the insert 34 such that the insert 34 is between the end cover 18 and the insert 34. In this way, fluid in the bore hole 30 and / or passage 32 can flow through the insert 34 to the nozzle 14, and a braze 36 or weld joint between the insert 34 and the end cover 18 is provided in the bore hole. A suitable boundary can be provided to prevent mixing or mixing of fluids within 30 and / or passage 32.

過渡運転又は拡張運転中、端部カバー１８とインサート３４との間の温度勾配により、端部カバー１８とインサート３４との間のろう付け３６又は溶接継手が脆弱化し、又は損傷を受ける可能性がある。結果として、ボアホール３０と通路３２との間に漏洩が発生する可能性があり、ボアホール３０及び／又は通路３２内で流体の混ざり合い又は混合が可能となる。燃焼器１０は、ボアホール３０と種々の通路３２との間に幾らかの量の漏洩が生じた状態で運転を継続することができるが、ノズル１４を通る設計上の流体流れが変更されることにより、あらゆる漏洩は燃焼器の運転を損なう可能性がある。脆弱化又は損傷を受けたろう付け３６又は溶接継手は検査及び検出が困難であり、検出時には、ボアホール３０内部の空間的又は幾何学的な制限によって、端部カバー１８全体を交換することなく従来の補修を行うことが困難か又は不可能になる場合がある。本発明の種々の実施形態は、リング４０によって１以上の既存のろう付け３６又は溶接継手を置き換えて補修する新規又は既存の端部カバー１８を修正するためのシステム及び方法を提供する。リング４０は通常、当初のインサート３４よりも剛性が低く、リング４０と端部カバー１８との間の引張応力を低下させることになる。加えて、端部カバー１８の再設計又は交換を必要とすることなく端部カバー１８をノズル１４に結合するよう端部カバー１８を修正又は補修することができ、補修又は交換コストの大幅な節減をもたらすことができる。   During transient or extended operation, the temperature gradient between the end cover 18 and the insert 34 can cause the braze 36 or weld joint between the end cover 18 and the insert 34 to become brittle or damaged. is there. As a result, leakage may occur between the bore hole 30 and the passage 32, and fluids can be mixed or mixed in the bore hole 30 and / or the passage 32. The combustor 10 can continue to operate with some amount of leakage between the borehole 30 and the various passages 32, but the design fluid flow through the nozzle 14 is altered. Thus, any leakage can impair the operation of the combustor. A weakened or damaged braze 36 or welded joint is difficult to inspect and detect, and at the time of detection the conventional end cover 18 may not be replaced due to spatial or geometric limitations within the borehole 30. Repairs may be difficult or impossible. Various embodiments of the present invention provide systems and methods for modifying a new or existing end cover 18 that replaces and repairs one or more existing brazes 36 or weld joints with a ring 40. The ring 40 is typically less rigid than the original insert 34 and will reduce the tensile stress between the ring 40 and the end cover 18. In addition, the end cover 18 can be modified or repaired to couple the end cover 18 to the nozzle 14 without requiring redesign or replacement of the end cover 18, greatly reducing repair or replacement costs. Can bring.

図３は、当初のインサート３４が取り除かれた、図２に示した端部カバー１８の拡大断面図を示す。当初のインサート３４及び何らかの脆弱化又は損傷を受けたろう付け３６又は溶接継手は、例えば、当初のインサート３４からの１以上のリング３０と、依然として機能している関連のろう付け３６又は溶接継手を所定位置に残した状態で、研削又は機械加工によってボアホール３０から実質的に取り除くことができる。或いは、図３に示すように、当初のインサート３４及び全ての関連するろう付け３６又は溶接継手を完全に取り除き、端部カバー１８に固定接続される１以上のリング４０と置き換えることもできる。各リング４０は、当初のインサート３４からの残留物であるか又は新規の要素であるか否かにかかわらず、前述のように端部カバー１８にろう付け又は溶接されるフープを含むことができる。各リング４０の縮小質量及び開放幾何形状により各リング４０の剛性が低下し、その結果、各リング４０と端部カバー１８との間の引張応力が小さくなる。加えて、各リング４０は、端部カバー１８及び交換インサート４２を貫通する連続通路３２を依然として維持しながら、交換インサート４２と嵌合するのに好都合な座面を提供する。   FIG. 3 shows an enlarged cross-sectional view of the end cover 18 shown in FIG. 2 with the original insert 34 removed. The original insert 34 and any weakened or damaged braze 36 or weld joint, for example, define one or more rings 30 from the original insert 34 and associated braze 36 or weld joint that is still functioning. While left in place, it can be substantially removed from the bore hole 30 by grinding or machining. Alternatively, as shown in FIG. 3, the original insert 34 and all associated brazes 36 or welded joints can be completely removed and replaced with one or more rings 40 that are fixedly connected to the end cover 18. Each ring 40 may include a hoop that is brazed or welded to the end cover 18 as described above, whether it is a residue from the original insert 34 or a new element. . The reduced mass and open geometry of each ring 40 reduces the rigidity of each ring 40 and, as a result, reduces the tensile stress between each ring 40 and end cover 18. In addition, each ring 40 provides a convenient seating surface for mating with the replacement insert 42 while still maintaining the continuous passage 32 through the end cover 18 and the replacement insert 42.

図４は、本発明の１つの態様による、交換インサート４２が端部カバー１８内に設置された状態の図３に示す端部カバー１８の拡大断面図を示す。図４に示すように、交換インサート４２は、交換端部カバー１８よりも遙かに低コストであり、ボアホール３０内に挿入することができる。各リング４０と交換インサート４２との間のシール４４は、ボアホール３０及び／又は通路３２内での流体の混ざり合い又は混合を防ぐための好適な境界を提供する。シール４４は、ほぼＷ字形又はＣ字形の断面を有し、交換インサート４２と関連するリング４０との間の相対移動に応じてシール４４を容易に撓ませることができる環状金属リングを備えることができる。ノズル１４は、この場合も同様に、交換インサート４２が端部カバー１８とノズル１４との間にあるように交換インサート４２の下流側で端部カバー１８及び／又は交換インサート４２に接続することができる。このようにして、ボアホール３０及び／又は通路３２内の流体は、上述のように交換インサート４２を通ってノズル１４に流れることができ、リング４０と、交換インサート４２及び端部カバー１８間のシール４４との組み合わせにより、ボアホール３０及び／又は通路３２内での流体の混ざり合い又は混合を防ぐための好適な境界が提供される。   FIG. 4 shows an enlarged cross-sectional view of the end cover 18 shown in FIG. 3 with the replacement insert 42 installed in the end cover 18 according to one aspect of the present invention. As shown in FIG. 4, the replacement insert 42 is much cheaper than the replacement end cover 18 and can be inserted into the bore hole 30. The seal 44 between each ring 40 and the replacement insert 42 provides a suitable boundary to prevent fluid mixing or mixing within the borehole 30 and / or the passage 32. The seal 44 has a generally W-shaped or C-shaped cross section and comprises an annular metal ring that can easily deflect the seal 44 in response to relative movement between the replacement insert 42 and the associated ring 40. it can. The nozzle 14 may again be connected to the end cover 18 and / or the replacement insert 42 downstream of the replacement insert 42 such that the replacement insert 42 is between the end cover 18 and the nozzle 14. it can. In this manner, fluid in the bore hole 30 and / or passage 32 can flow through the replacement insert 42 to the nozzle 14 as described above, and the seal between the ring 40 and the replacement insert 42 and end cover 18. The combination with 44 provides a suitable boundary to prevent fluid mixing or mixing within the borehole 30 and / or the passage 32.

図５及び６は、本発明の種々の実施形態による、図４に示すシール４４の拡大断面図を提供する。図５及び６に示すように、シール４４は、隣接表面の膨張又は収縮の間にシール４４を越える流体の流れを防止する。具体的には、図５は、リング４０と交換インサート４２との間のＷ字形シール４４により、シール４４を越える流体の流れを可能にすることなく、リング４０及び交換インサート４２が運転中に膨張又は収縮できるようになることを示している。同様に、図６は、Ｃ字形シール４４を端部カバー１８及び交換インサート４２間で既存のろう付け又は溶接継手と置き換えることができることを示している。   5 and 6 provide enlarged cross-sectional views of the seal 44 shown in FIG. 4 according to various embodiments of the present invention. As shown in FIGS. 5 and 6, seal 44 prevents fluid flow past seal 44 during expansion or contraction of adjacent surfaces. Specifically, FIG. 5 shows that the W-shaped seal 44 between the ring 40 and the replacement insert 42 allows the ring 40 and replacement insert 42 to expand during operation without allowing fluid flow past the seal 44. Or it shows that it becomes possible to contract. Similarly, FIG. 6 shows that the C-shaped seal 44 can be replaced with an existing brazed or welded joint between the end cover 18 and the replacement insert 42.

本明細書では、本発明を最良の形態を含めて開示するとともに、装置又はシステムの製造・使用及び方法の実施を始め、本発明を当業者が実施できるようにするため、例を用いて説明してきた。本発明の特許性を有する範囲は、特許請求の範囲によって規定され、当業者に自明な他の例も包含する。かかる他の例は、特許請求の範囲の文言上の差のない構成要素を有しているか、或いは特許請求の範囲の文言と実質的な差のない均等な構成要素を有していれば、特許請求の範囲に記載された技術的範囲に属する。   This specification discloses the invention, including the best mode, and is described by way of example to enable those skilled in the art to practice the invention, including making and using the device or system and implementing the method. I have done it. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples have components that have no difference in the wording of the claims, or equivalent components that have no substantial difference from the language of the claims. It belongs to the technical scope described in the claims.

１４ ノズル
１８ 端部カバー
３０ ボアホール
３２ 連続通路
３４ インサート
３６ ろう付け 14 Nozzle 18 End cover 30 Bore hole 32 Continuous passage 34 Insert 36 Brazing

Claims (13)

端部カバー（１８）と、
前記端部カバー（１８）を貫通するボアホール（３０）と、
前記端部カバー（１８）のボアホール（３０）内にあるインサート（３４）と、
前記端部カバー（１８）及び前記インサート（３４）を通過する少なくとも１つの連続通路（３２）と、
前記端部カバー（１８）に固定接続されるリング（４０）と、
前記リング（４０）と前記インサート（３４）との間にあるシール（４４）と
を備える燃焼器（１０）。 An end cover (18);
A bore hole (30) extending through the end cover (18);
An insert (34) in a bore hole (30) of the end cover (18);
At least one continuous passage (32) passing through the end cover (18) and the insert (34);
A ring (40) fixedly connected to the end cover (18);
A combustor (10) comprising a seal (44) between the ring (40) and the insert (34). 前記端部カバー（１８）を貫通するボアホール（３０）が軸方向で階段状にされている、請求項１記載の燃焼器（１０）。   The combustor (10) according to claim 1, wherein the bore hole (30) passing through the end cover (18) is stepped in the axial direction. 前記リング（４０）は、前記端部カバー（１８）へのろう付け又は溶接の少なくとも一方が実施される、請求項１又は請求項２記載の燃焼器（１０）。   The combustor (10) according to claim 1 or claim 2, wherein the ring (40) is at least one of brazed or welded to the end cover (18). 前記端部カバー（１８）及び前記インサート（３４）を貫通する複数の連続通路３２をさらに備える、請求項１乃至請求項３のいずれか１項記載の燃焼器（１０）。   The combustor (10) according to any one of the preceding claims, further comprising a plurality of continuous passages (32) extending through the end cover (18) and the insert (34). 前記インサート（３４）の下流側で前記端部カバー（１８）に接続されるノズル（１４）をさらに備える、請求項１乃至請求項４のいずれか１項記載の燃焼器（１０）。   The combustor (10) according to any one of claims 1 to 4, further comprising a nozzle (14) connected to the end cover (18) downstream of the insert (34). 前記端部カバー（１８）に固定接続される複数のリング（４０）をさらに備える、請求項１乃至請求項５のいずれか１項記載の燃焼器（１０）。   The combustor (10) of any preceding claim, further comprising a plurality of rings (40) fixedly connected to the end cover (18). 前記複数のリング（４０）の各々と前記インサート（３４）との間にシール（４４）をさらに備える、請求項６記載の燃焼器（１０）。   The combustor (10) of claim 6, further comprising a seal (44) between each of the plurality of rings (40) and the insert (34). 燃焼器（１０）を補修する方法であって、
端部カバー（１８）にリング（４０）を固定接続する段階と、
前記端部カバー（１８）内に交換インサート（４２）を設置する段階と、
前記リング（４０）と前記交換インサート（４２）との間にシール（４４）を設置する段階と、
を含む方法。 A method of repairing a combustor (10), comprising:
Fixedly connecting the ring (40) to the end cover (18);
Installing a replacement insert (42) in the end cover (18);
Installing a seal (44) between the ring (40) and the replacement insert (42);
Including methods. 前記端部カバー（１８）から当初のインサート（３４）の少なくとも一部を取り除く段階をさらに含む、請求項８記載の方法。   The method of claim 8, further comprising removing at least a portion of the original insert (34) from the end cover (18). 前記端部カバー（１８）に前記リング（４０）をろう付け又は溶接する段階をさらに含む、請求項８又は請求項９記載の方法。   The method according to claim 8 or 9, further comprising brazing or welding the ring (40) to the end cover (18). 前記交換インサート（４２）の下流側で前記端部カバー（１８）にノズル（１４）を接続する段階をさらに含む、請求項８乃至請求項１０のいずれか１項記載の方法。   The method according to any one of claims 8 to 10, further comprising connecting a nozzle (14) to the end cover (18) downstream of the replacement insert (42). 複数のリング（４０）を前記端部カバー（１８）に固定接続する段階をさらに含む、
請求項８乃至請求項１１のいずれか１項記載の方法。 Further comprising fixedly connecting a plurality of rings (40) to the end cover (18);
12. A method according to any one of claims 8 to 11. 前記複数のリング（４０）の各々と前記交換インサート（４２）との間にシール（４４）を設置する段階をさらに含む、請求項１２記載の方法。   The method of claim 12, further comprising installing a seal (44) between each of the plurality of rings (40) and the replacement insert (42).
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