JP2010203256A - High temperature duct - Google Patents

High temperature duct Download PDF

Info

Publication number
JP2010203256A
JP2010203256A JP2009047348A JP2009047348A JP2010203256A JP 2010203256 A JP2010203256 A JP 2010203256A JP 2009047348 A JP2009047348 A JP 2009047348A JP 2009047348 A JP2009047348 A JP 2009047348A JP 2010203256 A JP2010203256 A JP 2010203256A
Authority
JP
Japan
Prior art keywords
duct
duct plate
plate
support member
temperature
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.)
Granted
Application number
JP2009047348A
Other languages
Japanese (ja)
Other versions
JP5180875B2 (en
Inventor
Eigo Kato
永護 加藤
Tomohiko Kadowaki
智彦 門脇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP2009047348A priority Critical patent/JP5180875B2/en
Publication of JP2010203256A publication Critical patent/JP2010203256A/en
Application granted granted Critical
Publication of JP5180875B2 publication Critical patent/JP5180875B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Exhaust Silencers (AREA)
  • Thermal Insulation (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high temperature duct capable of a reducing heat quantity transmitted to a duct plate, preventing the partial deformation of the duct plate, and preventing the breakage or cracks of the duct plate caused by thermal stress. <P>SOLUTION: In the high temperature duct 8 having the duct plate 11 through which high a temperature fluid flows, one end of a supporting member 13 penetrating the duct plate 11 in a thickness direction is stored in a projecting part 14 projecting outward from an outer peripheral surface of the duct plate 11. A side surface of a flange 13a provided at one end of the supporting member 13 is slidable along a sidewall 14a constituting the projecting part 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ガスタービンの排気ダクト等、高温流体を内包する高温ダクトに関するものである。   The present invention relates to a high-temperature duct that contains a high-temperature fluid, such as an exhaust duct of a gas turbine.

ガスタービンの排気ダクトとしては、ダクトプレートの外周面（大気側）にセラミックファイバー、ロックウール、グラスウール等の断熱材を貼設した外面保温ダクトとされたものが知られている（例えば、特許文献１参照）。   As an exhaust duct of a gas turbine, there is known an external heat insulation duct in which a heat insulating material such as ceramic fiber, rock wool, or glass wool is pasted on the outer peripheral surface (atmosphere side) of a duct plate (for example, Patent Literature 1).

特開２０００−２５７４４４号公報JP 2000-257444 A

また、ダクトプレートの強度をより確保するという観点から、図５に示すような、ダクトプレート１１の内周面（排気ガスが通過する側）にセラミックファイバー、ロックウール、グラスウール等の断熱材１２を貼設した内面保温ダクトとされた排気ダクト１００が提案されている。図５に示す排気ダクト１００では、空気圧縮機で圧縮された大気の一部を、ガスタービンの起動時等、適宜必要な時期に排気ダクト１００に導く抽気管１０の一端が、支持部材１０１を介して排気ダクト１００に固定支持されている。   Further, from the viewpoint of ensuring the strength of the duct plate, a heat insulating material 12 such as ceramic fiber, rock wool, glass wool or the like is provided on the inner peripheral surface (exhaust gas passage side) of the duct plate 11 as shown in FIG. There has been proposed an exhaust duct 100 which is a pasted internal heat insulation duct. In the exhaust duct 100 shown in FIG. 5, one end of the extraction pipe 10 that guides a part of the atmosphere compressed by the air compressor to the exhaust duct 100 at a necessary time, such as when the gas turbine is started up, supports the support member 101. Via the exhaust duct 100.

支持部材１０１の一端部は、ダクトプレート１１の内周面から内方（半径方向内側）に向かって突出する突出部１０２の内部に収容されている。支持部材１０１の一端には、フランジ部１０１ａが設けられており、このフランジ部１０１ａの側面が、突出部１０２を構成する側壁１０２ａに沿って摺動（スライド）するようになっている。
そして、このような排気ダクト１００では、排気ガスによって抽気管１０および支持部材１０１の他端部が加熱され、この熱が支持部材１０１のフランジ部１０１ａを介してダクトプレート１１に伝わることになる。
一方、支持部材１０１の他端部は、排気ダクト１００の内部に露出しており、支持部材１０１の他端は、溶接や締結手段（例えば、ボルト・ナット）により抽気管１０に接合（結合）されている。 One end of the support member 101 is accommodated in a protruding portion 102 that protrudes inward (inward in the radial direction) from the inner peripheral surface of the duct plate 11. A flange portion 101 a is provided at one end of the support member 101, and a side surface of the flange portion 101 a slides (slides) along the side wall 102 a constituting the protruding portion 102.
In such an exhaust duct 100, the other ends of the extraction pipe 10 and the support member 101 are heated by the exhaust gas, and this heat is transmitted to the duct plate 11 via the flange portion 101 a of the support member 101.
On the other hand, the other end of the support member 101 is exposed inside the exhaust duct 100, and the other end of the support member 101 is joined (coupled) to the extraction pipe 10 by welding or fastening means (for example, bolts and nuts). Has been.

しかしながら、近年、ガスタービンの性能向上の観点から排気ガス温度をさらに向上させたいとの要望があり、このような場合、支持部材１０１のフランジ部１０１ａを介してダクトプレート１１に伝わる熱量が過大となり、ダクトプレート１１が局部的に変形したり、ダクトプレート１１に熱応力による割れや亀裂が発生して、排気ガスが外部に漏れだしてしまうおそれがある。   However, in recent years, there has been a desire to further increase the exhaust gas temperature from the viewpoint of improving the performance of the gas turbine. In such a case, the amount of heat transmitted to the duct plate 11 via the flange portion 101a of the support member 101 becomes excessive. The duct plate 11 may be locally deformed, or cracks or cracks may be generated in the duct plate 11 due to thermal stress, causing exhaust gas to leak out.

本発明は、上記の事情に鑑みてなされたもので、ダクトプレートに伝わる熱量を低減させることができ、ダクトプレートの局部的な変形を防止することができて、ダクトプレートの熱応力による割れや亀裂を防止することができる高温ダクトを提供することを目的とする。   The present invention has been made in view of the above circumstances, can reduce the amount of heat transmitted to the duct plate, can prevent local deformation of the duct plate, An object is to provide a high-temperature duct capable of preventing cracks.

本発明は、上記課題を解決するため、以下の手段を採用した。
本発明に係る高温ダクトは、ダクトプレートの内部を高温流体が通過する高温ダクトであって、前記ダクトプレートの外周面から外方に向かって張り出す張出部の内部に、前記ダクトプレートを板厚方向に貫通する管台の一端部が収容されており、前記管台の一端に設けられたフランジ部の側面が、前記張出部を構成する側壁に沿って摺動するように構成されている。 The present invention employs the following means in order to solve the above problems.
The high-temperature duct according to the present invention is a high-temperature duct through which a high-temperature fluid passes through the inside of the duct plate, and the duct plate is placed inside an overhanging portion that projects outward from the outer peripheral surface of the duct plate. One end of a nozzle piercing in the thickness direction is accommodated, and the side surface of the flange portion provided at one end of the nozzle is configured to slide along the side wall constituting the overhanging portion. Yes.

本発明に係る高温ダクトによれば、支持部材の一端に設けられたフランジ部が、ダクトプレートの外周面から外方に向かって張り出す張出部の内部に収容されることになり、その分、支持部材の長さを、従来の支持部材よりも長くすることができる。
これにより、ダクトプレートに伝わる熱量を低減させることができ、ダクトプレートの局部的な変形を防止することができて、ダクトプレートの熱応力による割れや亀裂を防止することができ、割れや亀裂からのガス漏れを防止することができる。 According to the high-temperature duct according to the present invention, the flange portion provided at one end of the support member is accommodated in the overhanging portion projecting outward from the outer peripheral surface of the duct plate. The length of the support member can be made longer than that of the conventional support member.
As a result, the amount of heat transmitted to the duct plate can be reduced, local deformation of the duct plate can be prevented, and cracks and cracks due to the thermal stress of the duct plate can be prevented. Gas leakage can be prevented.

本発明に係るガスタービンは、ダクトプレートに伝わる熱量を低減させることができ、ダクトプレートの局部的な変形を防止することができて、ダクトプレートの熱応力による割れや亀裂を防止することができる高温ダクトを具備している。   The gas turbine according to the present invention can reduce the amount of heat transmitted to the duct plate, can prevent local deformation of the duct plate, and can prevent cracks and cracks due to thermal stress of the duct plate. It has a hot duct.

本発明に係るガスタービンによれば、ダクトプレートの内部を通過する排気ガスの温度を上昇させることができ、ガスタービンの性能を向上させることができる。
また、ダクトプレートの熱応力による割れや亀裂が防止されることにより、ガス漏れを防止することができて、ガスタービンの信頼性を向上させることができる。 According to the gas turbine concerning the present invention, the temperature of exhaust gas which passes through the inside of a duct plate can be raised, and the performance of a gas turbine can be improved.
Further, by preventing cracks and cracks due to thermal stress of the duct plate, gas leakage can be prevented and the reliability of the gas turbine can be improved.

本発明に係る高温ダクトによれば、ダクトプレートに伝わる熱量を低減させることができ、ダクトプレートの局部的な変形を防止することができて、ダクトプレートの熱応力による割れや亀裂を防止することができるという効果を奏する。   According to the high-temperature duct according to the present invention, the amount of heat transmitted to the duct plate can be reduced, local deformation of the duct plate can be prevented, and cracks and cracks due to thermal stress of the duct plate can be prevented. There is an effect that can be.

本発明の一実施形態に係る排気ダクトを備えたガスタービンの系統図である。It is a distribution diagram of a gas turbine provided with an exhaust duct concerning one embodiment of the present invention. 本発明の一実施形態に係る排気ダクトの概略構成図である。It is a schematic block diagram of the exhaust duct which concerns on one Embodiment of this invention. 図２の要部を拡大して示した断面図である。It is sectional drawing which expanded and showed the principal part of FIG. 図３のＩＶ−ＩＶ矢視断面図である。FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 従来の排気ダクトを示す図であって、図４と同様の図である。It is a figure which shows the conventional exhaust duct, Comprising: It is a figure similar to FIG.

以下、本発明の一実施形態に係る排気ダクト（高温ダクト）について、図１から図４を参照しながら説明する。
図１は本実施形態に係る排気ダクトを備えたガスタービンの系統図、図２は本実施形態に係る排気ダクトの概略構成図、図３は図２の要部を拡大して示した断面図、図４は図３のＩＶ−ＩＶ矢視断面図である。 Hereinafter, an exhaust duct (high temperature duct) according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.
FIG. 1 is a system diagram of a gas turbine provided with an exhaust duct according to the present embodiment, FIG. 2 is a schematic configuration diagram of the exhaust duct according to the present embodiment, and FIG. 3 is an enlarged cross-sectional view showing the main part of FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG.

図１に示すように、吸気フィルタ１で濾過された大気は空気圧縮機２で圧縮された後、燃焼器３で燃焼して高温ガスとなり、タービン４へ流入する。これら空気圧縮機２、燃焼器３、タービン４等で単純１軸のガスタービン５を構成しており、発電機６を駆動する。ガスタービン５の排気ガス（高温流体）は脱硝装置７により公害となる窒素酸化物ＮＯｘが除去された後、排気ダクト８を経て煙突９から大気へ放出される。また、空気圧縮機２で圧縮された大気の一部は、ガスタービン５の起動時等、適宜必要な時期に抽気管１０を介して排気ダクト８に導かれる。   As shown in FIG. 1, the air filtered by the intake filter 1 is compressed by the air compressor 2, then burned by the combustor 3 to become a high temperature gas, and flows into the turbine 4. The air compressor 2, the combustor 3, the turbine 4, and the like constitute a simple uniaxial gas turbine 5 that drives the generator 6. Exhaust gas (high temperature fluid) of the gas turbine 5 is discharged from the chimney 9 through the exhaust duct 8 to the atmosphere after the nitrogen oxide NOx that is polluted is removed by the denitration device 7. Further, a part of the atmosphere compressed by the air compressor 2 is led to the exhaust duct 8 through the extraction pipe 10 at an appropriate time when the gas turbine 5 is started.

図２から図４に示すように、排気ダクト８は、ダクトプレート１１の内周面（排気ガスが通過する側）にセラミックファイバー、ロックウール、グラスウール等の断熱材１２を貼設した内面保温ダクトとされている。また、図３に示すように、排気ダクト８には、ダクトプレート１１および断熱材１２を貫通して抽気管１０の一端部（下流側の端部）が挿通されている。抽気管１０の一端は、支持部材（管台）１３を介して排気ダクト８に固定支持されている。   As shown in FIG. 2 to FIG. 4, the exhaust duct 8 has an inner heat insulation duct in which a heat insulating material 12 such as ceramic fiber, rock wool, glass wool, etc. is attached to the inner peripheral surface (the side through which the exhaust gas passes) of the duct plate 11. It is said that. Further, as shown in FIG. 3, one end portion (downstream end portion) of the extraction pipe 10 is inserted into the exhaust duct 8 through the duct plate 11 and the heat insulating material 12. One end of the extraction pipe 10 is fixedly supported by the exhaust duct 8 via a support member (tube base) 13.

支持部材１３の一端部は、ダクトプレート１１の外周面（大気側）から外方（半径方向外側）に向かって張り出す（突出する）張出部（筐体）１４の内部に収容されている。支持部材１３の一端には、フランジ部１３ａが設けられており、このフランジ部１３ａの側面が、張出部１４を構成する側壁１４ａに沿って摺動（スライド）するようになっている。
一方、支持部材１３の他端部は、排気ダクト８の内部に露出しており、支持部材１３の他端は、溶接や締結手段（例えば、ボルト・ナット）により抽気管１０に接合（結合）されている。 One end of the support member 13 is housed inside an overhanging portion (housing) 14 that projects (projects) outward (radially outward) from the outer peripheral surface (atmosphere side) of the duct plate 11. . At one end of the support member 13, a flange portion 13 a is provided, and a side surface of the flange portion 13 a slides (slides) along the side wall 14 a constituting the overhang portion 14.
On the other hand, the other end of the support member 13 is exposed inside the exhaust duct 8, and the other end of the support member 13 is joined (coupled) to the extraction pipe 10 by welding or fastening means (for example, bolts and nuts). Has been.

本実施形態に係る排気ダクト８によれば、支持部材１３の一端に設けられたフランジ部１３ａが、ダクトプレート１１の外周面から外方に向かって張り出す張出部１４の内部に収容されることになり、その分、支持部材１３の長さを、従来の支持部材１０１（図５参照）よりも長くすることができる。
これにより、ダクトプレート１１に伝わる熱量を低減させることができ、ダクトプレート１１の局部的な変形を防止することができて、ダクトプレート１１の熱応力による割れや亀裂を防止することができ、割れや亀裂からのガス漏れを防止することができる。 According to the exhaust duct 8 according to the present embodiment, the flange portion 13 a provided at one end of the support member 13 is accommodated in the overhanging portion 14 that projects outward from the outer peripheral surface of the duct plate 11. Therefore, the length of the support member 13 can be made longer than that of the conventional support member 101 (see FIG. 5).
As a result, the amount of heat transmitted to the duct plate 11 can be reduced, local deformation of the duct plate 11 can be prevented, and cracks and cracks due to thermal stress of the duct plate 11 can be prevented. Gas leakage from cracks and cracks can be prevented.

なお、本発明は上述した実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において適宜変更することができる。
また、上述した実施形態では、支持部材１３が抽気管１０を支持するものを一具体例として挙げて説明したが、本発明はこれに限定されるものではなく、支持部材１３は、ガス分析用のガス取出管、ガス温度計測用の温度計等を支持するものや、ドレン抜きやドラフト計測等を行うものであっても良い。 In addition, this invention is not limited to embodiment mentioned above, In the range which does not deviate from the summary of this invention, it can change suitably.
In the embodiment described above, the support member 13 supporting the extraction tube 10 has been described as a specific example. However, the present invention is not limited to this, and the support member 13 is used for gas analysis. It may be one that supports a gas extraction pipe, a thermometer for gas temperature measurement, or the like that performs drainage or draft measurement.

５ ガスタービン
８ 排気ダクト（高温ダクト）
１１ ダクトプレート
１３ 支持部材（管台）
１３ａ フランジ部
１４ 張出部
１４ａ 側壁 5 Gas turbine 8 Exhaust duct (high temperature duct)
11 Duct plate 13 Support member (head)
13a Flange part 14 Overhang part 14a Side wall

Claims (2)

ダクトプレートの内部を高温流体が通過する高温ダクトであって、
前記ダクトプレートの外周面から外方に向かって張り出す張出部の内部に、前記ダクトプレートを板厚方向に貫通する管台の一端部が収容されており、前記管台の一端に設けられたフランジ部の側面が、前記張出部を構成する側壁に沿って摺動することを特徴とする高温ダクト。 A high-temperature duct through which high-temperature fluid passes through the duct plate,
One end portion of a nozzle that penetrates the duct plate in the thickness direction is accommodated in an overhang portion that protrudes outward from the outer peripheral surface of the duct plate, and is provided at one end of the nozzle. A high-temperature duct characterized in that a side surface of the flange portion slides along a side wall constituting the overhanging portion. 請求項１に記載の高温ダクトを具備していることを特徴とするガスタービン。   A gas turbine comprising the high-temperature duct according to claim 1.
JP2009047348A 2009-02-27 2009-02-27 High temperature duct Active JP5180875B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009047348A JP5180875B2 (en) 2009-02-27 2009-02-27 High temperature duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009047348A JP5180875B2 (en) 2009-02-27 2009-02-27 High temperature duct

Publications (2)

Publication Number Publication Date
JP2010203256A true JP2010203256A (en) 2010-09-16
JP5180875B2 JP5180875B2 (en) 2013-04-10

Family

ID=42964993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009047348A Active JP5180875B2 (en) 2009-02-27 2009-02-27 High temperature duct

Country Status (1)

Country Link
JP (1) JP5180875B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012114832A1 (en) * 2011-02-25 2012-08-30 三菱重工業株式会社 Gas turbine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000257444A (en) * 1999-03-04 2000-09-19 Mitsubishi Heavy Ind Ltd Nipple installation structure and high-temperature duct having the same, and exhaust system having the high- temperature duct

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000257444A (en) * 1999-03-04 2000-09-19 Mitsubishi Heavy Ind Ltd Nipple installation structure and high-temperature duct having the same, and exhaust system having the high- temperature duct

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012114832A1 (en) * 2011-02-25 2012-08-30 三菱重工業株式会社 Gas turbine
JP2012177306A (en) * 2011-02-25 2012-09-13 Mitsubishi Heavy Ind Ltd Gas turbine
US9650966B2 (en) 2011-02-25 2017-05-16 Mitsubishi Hitachi Power Systems, Ltd. Gas turbine with an air bleeder tube
US10526979B2 (en) 2011-02-25 2020-01-07 Mitsubishi Hitachi Power Systems, Ltd. Gas turbine with an air bleeder tube

Also Published As

Publication number Publication date
JP5180875B2 (en) 2013-04-10

Similar Documents

Publication Publication Date Title
CA2598326C (en) Seal system for an interturbine duct within a gas turbine engine
US8157511B2 (en) Turbine shroud gas path duct interface
JP4835330B2 (en) Turbine housing
EP1813867A3 (en) Wall elements for gas turbine engine combustors
JP2014181701A (en) Flow sleeve assembly for combustion module of gas turbine combustor
US8429891B2 (en) Anti-icing system using radiant infrared energy from turbine exhaust flues
JP2011021601A (en) Seal for turbine engine and method for assembling turbine engine
EP2280225A3 (en) Effusion cooled dual wall gas turbine combustors
CN105814282A (en) CMC shroud support system
RU2007135200A (en) GAS-TURBINE ENGINE TURBINE STATOR AND GAS-TURBINE ENGINE
JP2009150382A (en) Thermally insulated flange bolt
US9617867B2 (en) Gas turbine
JP2009243469A (en) Method and system of supporting stator constituent element
EA201290058A1 (en) METHOD AND DEVICE FOR TRANSFORMING HEAT ENERGY FROM BIOMASS TO MECHANICAL WORK
JP5180875B2 (en) High temperature duct
JP2007332966A (en) Pipe penetration system
EP2604821A3 (en) System and method for thermal control in a gas turbine engine
US9488069B2 (en) Cooling-air guidance in a housing structure of a turbomachine
JP4471612B2 (en) Method and apparatus for supporting a hot duct apparatus
WO2013099582A1 (en) Catalytic combustor in gas turbine engine
JP2002286206A (en) Heavy oil burner cooling apparatus
KR100942657B1 (en) Mechanical sleeve type expansion joint of heat recovery system generator
KR101048134B1 (en) Bellows Connector on Exhaust Manifold
RU2303198C1 (en) Boiler plant
JP2004138286A (en) Radiant tube burner, and attaching structure for radiant tube

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120227

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20121214

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20121218

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130111

R151 Written notification of patent or utility model registration

Ref document number: 5180875

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20160118

Year of fee payment: 3

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350