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CN103518100A - Heat shield assembly - Google Patents

Heat shield assembly Download PDF

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Publication number
CN103518100A
CN103518100A CN201280023081.6A CN201280023081A CN103518100A CN 103518100 A CN103518100 A CN 103518100A CN 201280023081 A CN201280023081 A CN 201280023081A CN 103518100 A CN103518100 A CN 103518100A
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CN
China
Prior art keywords
shoulder
heat shield
hot gas
dimple
gas side
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.)
Pending
Application number
CN201280023081.6A
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Chinese (zh)
Inventor
A.伯特彻
S.格伦德尔
A.克鲁格
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Siemens Corp
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Siemens Corp
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.)
Filing date
Publication date
Application filed by Siemens Corp filed Critical Siemens Corp
Publication of CN103518100A publication Critical patent/CN103518100A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/02—Casings; Linings; Walls characterised by the shape of the bricks or blocks used
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
    • 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
    • F23R3/007—Continuous combustion chambers using liquid or gaseous fuel constructed mainly of ceramic components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2700/00—Constructional details of combustion chambers
    • F23M2700/005—Structures of combustion chambers or smoke ducts
    • F23M2700/0053—Bricks for combustion chamber walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05005—Sealing means between wall tiles or panels

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Exhaust Silencers (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Thermal Insulation (AREA)

Abstract

本发明涉及一种热屏蔽装置（1），其具有至少两个邻接的隔热屏（2a，2b），即第一隔热屏（2a）和第二隔热屏（2b），它们分别具有热气侧（3a，3b）以及相对置的冷气侧（4a，4b），其中隔热屏（2a，2b）具有将热气侧（3a，3b）和冷气侧（4a，4b）连接起来的邻接的侧壁（6a，6b），同时，在每个邻接的侧壁（6a，6b）中，分别开设一个与热气侧（3a，3b）和冷气侧（4a，4b）间隔距离的嵌接凹槽（5a，5b），其中邻接的隔热屏（2a，2b）是搭接的，而且第一隔热屏（3a）的侧壁（6a）在从嵌接凹槽（5a）开始朝向热气侧（3a）的方向上具有凸肩，其中所述凸肩具有至少一个凸肩侧面（7a）以及与之紧邻的凸肩前缘（8a），并且同时第二隔热屏（2b）在从嵌接凹槽（5b）开始朝向热气侧（3b）的方向上，具有与所述凸肩基本互补的凹洼，其中所述凹洼具有至少一个凹洼侧面（7b）以及与之紧邻的凹洼后缘（8b），将所述凸肩和所述凹洼布设成，使得能够从嵌接凹槽（5a，5b）开始，在凹洼和凸肩之间构建一种朝热气侧（3a，3b）敞口的间隙（9），同时，凸肩侧面（7a）以及凹洼侧面（7b）相对于各自的冷气侧（4a，4b）具有斜度。

The invention relates to a heat shield (1) having at least two adjacent heat shields (2a, 2b), namely a first heat shield (2a) and a second heat shield (2b), each having The hot gas side (3a, 3b) and the opposite cold gas side (4a, 4b), wherein the heat shield (2a, 2b) has an adjoining The side walls (6a, 6b) and at the same time, in each adjacent side wall (6a, 6b), an embedding groove spaced apart from the hot gas side (3a, 3b) and the cold gas side (4a, 4b) respectively (5a, 5b), where the adjoining heat shields (2a, 2b) are overlapping and the side wall (6a) of the first heat shield (3a) starts from the scarfing groove (5a) towards the hot gas side There is a shoulder in the direction of (3a), wherein the shoulder has at least one shoulder side (7a) and a shoulder front edge (8a) immediately adjacent thereto, and at the same time the second heat shield (2b) is In the direction of the contact groove (5b) starting towards the hot gas side (3b), there is a dimple substantially complementary to said shoulder, wherein said dimple has at least one dimple side (7b) and a dimple immediately adjacent thereto trailing edge (8b), said shoulder and said depression are arranged in such a way that, starting from the scarfing groove (5a, 5b), a kind of hot gas side (3a, 3b) The open gap ( 9 ), meanwhile, the shoulder side ( 7a ) and the dimple side ( 7b ) have a slope relative to the respective cold air side ( 4a , 4b ).

Description

Thermal shield apparatus
Technical field
The present invention relates to a kind of thermal shield apparatus, it has the heat screen of at least two adjacency, i.e. the first heat screen and the second heat screen, they have respectively hot gas side and opposed cold air side, wherein said heat screen has the sidewall of the adjacency that hot gas side and cold air side are coupled together, meanwhile, in the sidewall of adjacency, offer respectively an interlocking groove with hot gas side and cold air side spacing distance.
Background technology
High-temperature reactor, for example, be used in the wall of the combustion chamber of moving under pressure of gas turbine, must prevent high temperature load by means of isolated screen suitable in its supporting structure, for example hot gas.To this, except providing metal material, can also provide the ceramic material being good at high-fire resistance, corrosion resistance and low heat conductivity.
From EP0558540B1, learn a kind of such heat screen.A kind of heat screen with the combustion chamber for gas turbine of supporting structure has been described, the side that it has hot gas side and cold air side and described hot gas side and cold air side are coupled together herein.In described side, offered interlocking groove, rabbeted for heat screen being fixed on to the support on supporting structure in described interlocking groove, wherein said support overlaps with described side partly at this.Supporting structure has groove.Support is passed in this groove.Therefore support is fixed in supporting structure and now on the side of heat screen, surrounds partly heat screen.Cross-sectional outling is implemented as, makes to be provided with the end of the support of Breadth Maximum, can be retained in groove.The elastic part that is designed to be slightly narrow support, can start to be bent from bottom land in order to apply pre-tensioning.Retaining component now still can move in groove, and but form closure ground keeps vertical with supporting structure surface.Between the heat screen of two adjacency, there is the first radial clearance and the second radial clearance between heat screen, described the first radial clearance extends to interlocking groove from inside, combustion chamber always, and described the second radial clearance extends to outside, combustion chamber from interlocking groove always.But due to high temperature, must to metallic support, carry out cooling by means of cooling-air., can there is the situation that increasing hot gas is invaded by the first radial clearance in the ignition temperature based on saving cooling-air and becoming more and more higher.If cooling abundant not, can there is the situation of metallic support scaling.In addition, also will the corrosion in gap occur, namely gap becomes large.So, will have increasing hot gas to invade the first radial clearance, this will cause the generation of increasing oxide skin again.
Summary of the invention
Therefore the technical problem to be solved in the present invention is that a kind of thermal shield apparatus that can avoid above-mentioned defect is provided.
According to the present invention, this technical problem is solved according to thermal shield apparatus claimed in claim 1 by a kind of.
Thermal shield apparatus has the heat screen of overlap joint each other of at least two adjacency, i.e. the first heat screen and the second heat screen, and they have respectively hot gas side and opposed cold air side.Heat screen has the sidewall of the adjacency that hot gas side and cold air side are coupled together, and wherein in the sidewall of adjacency, offers respectively an interlocking groove with hot gas side and cold air side spacing distance.
According to the present invention, the sidewall of the first heat screen is starting to have convex shoulder towards the direction of hot gas side from interlocking groove, the convex shoulder leading edge that wherein said convex shoulder has at least one convex shoulder side and is close to it.The second heat screen has and the basic complementary calixconcavity of described convex shoulder in the direction starting from interlocking groove towards hot gas side, the calixconcavity trailing edge that wherein said calixconcavity has at least one calixconcavity side and is close to it, convex shoulder and calixconcavity cloth are set as, make it possible to, from interlocking groove, between calixconcavity and convex shoulder, build one towards the uncovered gap of hot gas side.Convex shoulder side and calixconcavity side have gradient with respect to cold air side separately.
By means of according to thermal shield apparatus of the present invention, can reduce hot gas and invade from hot gas side.This device also can be called as labyrinth-type excluder.Ci， gap and the hardware being positioned at wherein can prevent hot gas intrusion by means of sealing effect, and in addition can radiation-inhibiting heat.In addition, can, through obstruct air or the cooling-air of gap transmission, because gradient will reside in more muchly in interlocking groove and reside in more muchly in heat screen itself, thereby can reach the object of cooling component better.Thereby can save cooling-air.Therefore can prevent that hardware in thermal shield apparatus especially from occurring overheated and generating oxide skin.Can avoid situation and the downtime of damaging with this.In addition this gradient balanced motion that causes the supporting structure of heat screen motion better.By means of according to thermal shield apparatus of the present invention, utilize the overlapping passive safety that can obtain heat screen of heat screen.
In preferred project organization, the gap between heat screen is designed to transmit cooling-air.
From cold air side, flow to the cooling-air of heat screen, through gap transmission.Hot gas side with this cooling heat screen and heat screen.
Convex shoulder side preferably has the gradient different from calixconcavity side.By means of described different gradient, the speed of the cooling-air in the gap that can make to flow through obtains and improves or reduce.Therefore can make cooling-air for example reside in more muchly critical especially position.Also can further reduce hot gas invades.
Accompanying drawing explanation
Other feature, characteristic and advantage of the present invention, draws the following explanation of doing from the embodiment to reference to accompanying drawing 1.
Fig. 1 represents according to thermal shield apparatus of the present invention.
The specific embodiment
Fig. 1 represents that, according to thermal shield apparatus 1 of the present invention, it has heat screen 2a, the 2b of two adjacency.At this, the first heat screen 2a has hot gas side 3a and cold air side 4a.The second heat screen 2b comprises hot gas side 3b and cold air side 4b equally.Direction from hot gas side 3a to cold air side 4a, is called as radial direction.Heat screen 2a, 2b comprise at least two the sidewall 6a, the 6b that are adjacent to each other.The first heat screen 2a now has the interlocking groove 5a with cold air side 4a and hot gas side 3a spacing distance.At this, this can be rabbeted to groove 5a regard the groove not extending as on the whole axial length of sidewall 6a, wherein the axial direction of sidewall 6a is perpendicular to radial direction.The second heat screen 2b has identical interlocking groove 5b equally. Support 10a, 10b are now scarfed to interlocking groove 5a, 5b from cold air side 4a, 4b by means of clamp arm.Support 10a, 10b have hidden a part of sidewall 6a, 6b together with clamp arm.By means of this support 10a, 10b, heat screen 2a, 2b can be fastened on a kind of supporting structure (not shown). Support 10a, 10b are comprised of metal, therefore must carry out cooling.So, cooling-air is invaded interlocking groove 5a, 5b from cold air side 4a, the 4b of heat screen 2a, 2b.From interlocking groove 5a, the sidewall 6a of the first heat screen 2a now has convex shoulder in the direction towards hot gas side 3a.This convex shoulder comprises at least one convex shoulder side 7a and the convex shoulder leading edge 8a being close to it.In addition, the second heat screen 2b has the calixconcavity with described convex shoulder complementation starting direction towards hot gas side 3b from interlocking groove 5a.At this, the calixconcavity trailing edge 8b that described calixconcavity has at least one calixconcavity side 7b and is close to it.The convex shoulder side 7a of the first heat screen 2a and convex shoulder leading edge 8a, thereby be designed to be complementary to a certain extent with calixconcavity side 7b and calixconcavity trailing edge 8b, thereby between calixconcavity and convex shoulder, build in this way one towards the uncovered gap 9 of hot gas side 3a, 3b.Convex shoulder side 7a and calixconcavity side 7b have gradient with respect to cold air side 4a, 4b.So heat screen 2a and 2b overlap.Describedly be overlapped on the seal that this is used as preventing that hot gas from invading.In addition, this overlap joint is also used as preventing that hardware is subject to thermal-radiating safeguard procedures.Hot gas will be invaded in gap 9, now only can be more difficult.Due to convex shoulder and calixconcavity, strengthened significantly the difficulty that hot gas is invaded from cold air side 4a, 4b mono-side.Cooling for support 10a, 10b are carried out, cooling-air is flowed through and is rabbeted groove 5a, 5b from cold air side 4a, 4b, and through gap 9, arrives combustion chambers immediately.By reducing hot gas, invade, can therefore save cooling-air.In addition, the overlap joint of heat screen 2a, 2b, has improved and for example when heat screen 2a, 2b break, has prevented the passive safety that fragment drops out.Gradient make cooling-air can ratio as there is no this gradient, if namely this convex shoulder side 7a is almost perpendicular to the situation of convex shoulder leading edge 8b, reside in more muchly in interlocking groove 5a, 5b.Therefore, can, when reducing cooling-air consumption, make support 10a, 10b effectively cooling.In addition, by means of this gradient, can make to cause the motion of the supporting structure (not shown) of heat screen 2a, 2b motion, the situation such as fruit convex shoulder side 7a and calixconcavity side 7b do not have this gradient, is compensated better.
Calixconcavity side 7b can have the gradient different from convex shoulder side 7a.Especially can make convex shoulder side 7a with respect to cold air side 4a, 4b, there is less gradient than calixconcavity side 7b.Therefore,, towards the 7a top, convex shoulder side of interlocking groove 5a and towards the 7b top, calixconcavity side of interlocking groove 5b, formed one than they situation Geng great gaps 9 endways.So, improved speed when flow in cooling-air Yan gap 9.In addition, can also stop in this way hot gas to flow in gap 9.But also can make convex shoulder side 7a with respect to cold air side 4a, 4b, there is larger gradient than calixconcavity side 7b.

Claims (4)

1.一种热屏蔽装置（1），具有至少两个邻接的隔热屏（2a，2b），即第一隔热屏（2a）和第二隔热屏（2b），它们分别具有热气侧（3a，3b）以及相对置的冷气侧（4a，4b），其中所述隔热屏（2a，2b）具有将热气侧（3a，3b）和冷气侧（4a，4b）连接起来的邻接的侧壁（6a，6b），同时，在每个邻接的侧壁（6a，6b）中，分别开设与热气侧（3a，3b）和冷气侧（4a，4b）间隔距离的嵌接凹槽（5a，5b），其特征在于，邻接的隔热屏（2a，2b）是搭接的，而且第一隔热屏（3a）的侧壁（6a）在从嵌接凹槽（5a）开始朝向热气侧（3a）的方向上具有凸肩，其中所述凸肩具有至少一个凸肩侧面（7a）以及与之紧邻的凸肩前缘（8a），并且同时第二隔热屏（2b）在从嵌接凹槽（5b）开始朝向热气侧（3b）的方向上，具有与所述凸肩基本互补的凹洼，其中所述凹洼具有至少一个凹洼侧面（7b）以及与之紧邻的凹洼后缘（8b），将所述凸肩和所述凹洼布设成，使得能够从嵌接凹槽（5a，5b）开始，在凹洼和凸肩之间构建一种朝热气侧（3a，3b）敞口的间隙（9），同时，凸肩侧面（7a）以及凹洼侧面（7b）相对于各自的冷气侧（4a，4b）具有斜度。1. A heat shield (1) having at least two adjoining heat shields (2a, 2b), namely a first heat shield (2a) and a second heat shield (2b), each having a hot gas side (3a, 3b) and the opposite cold air side (4a, 4b), wherein the heat shield (2a, 2b) has an adjoining The side walls (6a, 6b), and at the same time, in each adjacent side wall (6a, 6b), respectively provide embedding grooves ( 5a, 5b), characterized in that adjacent heat shields (2a, 2b) overlap and that the side walls (6a) of the first heat shield (3a) start from the engagement groove (5a) towards There is a shoulder in the direction of the hot gas side (3a), wherein the shoulder has at least one shoulder side (7a) and a shoulder front edge (8a) directly adjacent thereto, and at the same time the second heat shield (2b) is Starting from the engagement groove (5b) towards the hot gas side (3b), there is a depression substantially complementary to the shoulder, wherein the depression has at least one depression side (7b) and an adjoining Dimple trailing edge (8b), said shoulder and said dimple are arranged in such a way that, starting from the scarfing groove (5a, 5b), between the dimple and the shoulder towards the hot gas side ( 3a, 3b) open gaps (9), while the shoulder sides (7a) and the depression sides (7b) are sloped relative to the respective cooling air side (4a, 4b). 2.按照权利要求1所述的热屏蔽装置，其特征在于，隔热屏（2a，2b）之间的间隙（9），被设计用于传输冷却空气。2. The heat shield as claimed in claim 1, characterized in that the gap (9) between the heat shields (2a, 2b) is designed for the transmission of cooling air. 3.按照上述权利要求中任一项所述的热屏蔽装置，其特征在于，凸肩侧面（7a）具有与凹洼侧面（7b）不同的斜度。3 . The heat shield as claimed in claim 1 , characterized in that the shoulder side ( 7 a ) has a different slope than the depression side ( 7 b ). 4 . 4.按照权利要求3所述的热屏蔽装置，其特征在于，凸肩侧面（7a）具有比凹洼侧面（7b）小的斜度。4. The heat shield as claimed in claim 3, characterized in that the shoulder side (7a) has a smaller slope than the depression side (7b).
CN201280023081.6A 2011-05-12 2012-04-13 Heat shield assembly Pending CN103518100A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11165819A EP2522907A1 (en) 2011-05-12 2011-05-12 Heat shield assembly
EP11165819.1 2011-05-12
PCT/EP2012/056783 WO2012152530A1 (en) 2011-05-12 2012-04-13 Heat shield assembly

Publications (1)

Publication Number Publication Date
CN103518100A true CN103518100A (en) 2014-01-15

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ID=45976933

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201280023081.6A Pending CN103518100A (en) 2011-05-12 2012-04-13 Heat shield assembly

Country Status (3)

Country Link
EP (2) EP2522907A1 (en)
CN (1) CN103518100A (en)
WO (1) WO2012152530A1 (en)

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CN106247399A (en) * 2015-06-08 2016-12-21 A.S.En.安萨尔多开发能源有限责任公司 The insulating ceramic brick and tile with relatively thin thickness for the combustor of gas turbine
CN112539419A (en) * 2020-12-18 2021-03-23 上海电气燃气轮机有限公司 Heat shield
CN113396304A (en) * 2019-01-17 2021-09-14 西门子能源全球有限两合公司 Combustion chamber
CN114046212A (en) * 2021-11-30 2022-02-15 西安航天动力研究所 Composite heat insulation structure with thermal deformation compensation function

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US10408451B2 (en) 2013-09-11 2019-09-10 Siemens Aktiengesellschaft Wedge-shaped ceramic heat shield of a gas turbine combustion chamber
EP3008389A1 (en) * 2013-09-30 2016-04-20 Siemens Aktiengesellschaft Heat shield for a combustion chamber of a gas turbine, and heat shield block for such a heat shield
GB201417495D0 (en) 2014-10-03 2014-11-19 Calderys France Refractory system for lining the interior walls of high-temperature furnaces or boilers and method of protection
US10473331B2 (en) * 2017-05-18 2019-11-12 United Technologies Corporation Combustor panel endrail interface

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WO1996004511A1 (en) * 1994-08-05 1996-02-15 Yanovsky, Ilya Yakovlevich Combustion chamber with a ceramic fire tube
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CN106247399A (en) * 2015-06-08 2016-12-21 A.S.En.安萨尔多开发能源有限责任公司 The insulating ceramic brick and tile with relatively thin thickness for the combustor of gas turbine
CN106247399B (en) * 2015-06-08 2020-01-31 A.S.En.安萨尔多开发能源有限责任公司 Heat-insulating ceramic tile with reduced thickness for a combustion chamber of a gas turbine
CN113396304A (en) * 2019-01-17 2021-09-14 西门子能源全球有限两合公司 Combustion chamber
CN113396304B (en) * 2019-01-17 2022-11-29 西门子能源全球有限两合公司 Combustion chamber
US11821629B2 (en) 2019-01-17 2023-11-21 Siemens Energy Global GmbH & Co. KG Combustion chamber
CN112539419A (en) * 2020-12-18 2021-03-23 上海电气燃气轮机有限公司 Heat shield
CN114046212A (en) * 2021-11-30 2022-02-15 西安航天动力研究所 Composite heat insulation structure with thermal deformation compensation function

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