KR101515794B1 - Blocking device of center baffle gap for heat recovery steam generator - Google Patents

Blocking device of center baffle gap for heat recovery steam generator Download PDF

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KR101515794B1
KR101515794B1 KR1020130140266A KR20130140266A KR101515794B1 KR 101515794 B1 KR101515794 B1 KR 101515794B1 KR 1020130140266 A KR1020130140266 A KR 1020130140266A KR 20130140266 A KR20130140266 A KR 20130140266A KR 101515794 B1 KR101515794 B1 KR 101515794B1
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gap
baffle
tube
plate
center
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KR1020130140266A
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Korean (ko)
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우종인
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비에이치아이 주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
    • F22B1/1815—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines using the exhaust gases of gas-turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/22—Drums; Headers; Accessories therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/36—Arrangements for sheathing or casing boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The present invention provides a blocking device of a center baffle gap to maximize a maximum output of the heat recovery steam generator by easily sealing a gap between the center baffles installed in both sides of the tube module to thoroughly prevent a bypass phenomenon of discharged gas. In regards to the front and rear tube module which is installed following the direction of heat fluid flow in the tube of the heat recovery steam generator, the invention comprises: a blind patch installed in the gap of which the tube modules are facing each other with the inner and exterior plate overlapped on some portions, but with some spaces in between them to prevent heat expansion and shrinkage strain between the upper and lower part; a baffle cover installed between the upper and the lower blind patches; and a blocking device of the center baffle gap for heat recovery steam generator which blocks not only the center baffle gap, but also the gaps between the inner plate and exterior plate of each blind path.

Description

배열회수보일러용 센터 배플 틈새 막음장치{BLOCKING DEVICE OF CENTER BAFFLE GAP FOR HEAT RECOVERY STEAM GENERATOR} BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a baffle for baffles,

본 발명은 배열회수보일러(HRSG: Heat Recovery Steam Generator)에서 각 모듈의 양쪽 가에 설치된 센터 배플 사이의 틈으로 가스터빈(GT) 배출가스의 바이 패스를 방지하여 최대출력을 극대화하고 열팽창으로 인한 센터 배플 커버의 손상을 방지하기 위한 배열회수보일러용 센터 배플 틈새 막음장치에 관한 것이다.
The present invention relates to a heat recovery steam generator (HRSG) that prevents bypassing of a gas turbine (GT) exhaust gas through a gap between center baffles installed on both sides of each module to maximize maximum output, To a center baffle crevice device for an array recovery boiler to prevent damage to the baffle cover.

배열회수보일러의 입력 덕트의 유동해석(CFD study)결과에 따르면, 입력 덕트를 통과한 가스 터빈의 배출가스는 첫번째 모듈의 선단에 부딪치면서 격렬한 유동이 발생하고, 모듈 선단에서의 속도 분포 및 유동은 불안정하며, 이로 인해 첫번째 하프 모듈이 다른 하프 모듈에 비해 상대적으로 심한 흔들림이 유발된다.According to the CFD study of the input duct of the batch recovery boiler, the exhaust gas of the gas turbine passing through the input duct strikes the tip of the first module, causing vigorous flow, and the velocity distribution and flow at the tip of the module Unstable, which causes the first half module to have a relatively strong shake relative to the other half module.

모듈 선단에서의 불균일한 속도 분포 및 유동에서 비롯되는 심한 흔들림은 센터 배플 커버의 탈락 및 틈을 발생시켜 가스터빈 배출가스의 바이 패스현상을 초래하고 최대출력에 악영향을 끼치게 된다.Uneven velocity distribution at the tip of the module and severe shaking resulting from the flow cause a dropout and gap in the center baffle cover, causing a bypass phenomenon of the gas turbine exhaust gas and adversely affecting the maximum output.

이런 점에서 배열회수보일러에 있어서 모듈 사이에서의 배출가스의 바이 패스현상을 방지하기 위하여는 센터 배플의 상부 선·후단에 센터 배플 틈새 막음장치를 설치할 필요성이 대두 된다.
In this respect, it is necessary to install a center baffle slit stopper at the upper and the rear of the center baffle in order to prevent bypass of the exhaust gas between the modules in the batch recovery boiler.

배열회수보일러용 하프 모듈의 배플에 관한 그간의 연구결과로는 공개특허 제2004-79256호, 등록특허 제1217821호, 등록특허 제1241278호, 등록실용신안 제249623호, 공개특허 제2012-75670호 등이 있는데, 이들 선행기술은 튜브 모듈간에 형성되는 틈으로 배출가스가 바이 패스되지 못하게 방지하는 것과는 한결같이 거리가 멀다.The results of previous studies on half-module baffles for batch recovery boilers are disclosed in Japanese Patent Laid-Open Nos. 2004-79256, 1217821, 1241278, Registered Utility Model No. 249623, and 2012-75670 These prior art techniques are consistently far from preventing exhaust gases from bypassing into gaps formed between the tube modules. 구현하고자 하는 목적이 튜브 모듈 간의 틈으로 배출가스가 바이 패스되지 못하게 하기 위한 방안으로 등록실용신안 제329824호가 있다. 이 선행기술은 배플을 둘로 나누고, 제1 배플은 일측 러그를 통해 전방에 위치한 튜브의 고정플레이트에 체결하고 제2 배플은 타측 러그를 통해 후미에 위치한 튜브의 고정플레이트에 체결하여 각기 다른 수직 수평 변위가 형성되도록 한 것인데, 배플을 분할 제작하기 때문에 번거롭고 제작비가 추가된다.The purpose of the implementation is to register the regeneration utility model 329824 as a means to prevent the exhaust gas from being bypassed through the gaps between the tube modules. This prior art divides the baffle into two, the first baffle is fastened to the fixing plate of the tube located forward through the one lug and the second baffle is fastened to the fixing plate of the tube located at the rear through the other lug, The baffle is divided and produced, so it is troublesome and the production cost is added. 또, 배플의 분할 제작에도 여전히 배플 사이의 틈이 완전히 사라지지는 않기 때문에 배출가스의 바이 패스현상을 방지하는 데 미흡하고, 분할 제작된 배플을 고정하는 데에는 러그 1조가 추가되어 제조공정이 늘고 제작원가도 더 높다.In addition, since the gap between the baffles does not completely disappear in the baffle divided production, it is not enough to prevent the bypass phenomenon of the exhaust gas. In order to fix the divided baffle, one rug is added, Is also higher. 게다가, 종래의 모든 배플은 가동 중에 상시 고온의 증기에 노출되는 센터 배플의 단부 보호에는 소홀하였다.In addition, all conventional baffles are neglected to protect the end of the center baffle, which is exposed to hot steam at all times during operation.

본 발명의 목적은 튜브 모듈의 양쪽 가에 설치된 센터 배플 사이의 틈을 간단하게 밀봉하여 열회수보일러용 센터 배플 커버, 나아가 열팽창으로 인한 센터 배플의 단부 보호에도 기여하는 배열회수보일러용 센터 배플 틈새 막음장치를 제공하는 것이다.
It is an object of the present invention to provide a center baffle cover for a heat recovery boiler and a center baffle crevice tool for a batch recovery boiler which contributes to the protection of the end of the center baffle due to thermal expansion even by simply sealing the gap between the center baffles installed on both sides of the tube module .

상기한 본 발명의 과제는, 배열회수보일러 내에서 튜브로 열매가 흐르는 방향을 따라 정연하게 설치된 전·후 튜브 모듈에 있어서, 튜브 모듈의 각 층마다 내외부 가림판이 겹쳐지게 설치되고 상층 가림판과 하층 가림판 사이에는 열팽창 및 수축 시의 늚을 고려하여 간극을 두고 배플 커버를 부착하여 각 층의 센터 배플 틈새를 막음으로써 배열회수보일러의 최대출력을 극대화하고, 열팽창으로 인한 상하층 가림판의 손상도 예방하도록 한 배열회수보일러용 배플로 달성하게 된다.
The above and other objects of the present invention are also achieved by providing a front and a rear tube module installed along a direction in which a fruit flows into a tube in an arrangement recovery boiler, wherein inner and outer shielding plates are provided so as to overlap each of the layers of the tube module, The baffle cover is attached to the gap between the shielding plates in consideration of the thermal expansion and shrinkage to maximize the maximum output of the batch recovery boiler by blocking the center baffle clearance of each layer and the damage of the upper and lower shielding plates due to thermal expansion This is achieved with a baffle for a batch recovery boiler.

본 발명은 센터 배플의 원형을 유지하는 가운데 아주 간단한 구조의 배플 커버로 양측 모듈의 배플간 틈을 완벽하게 막아 즘으로써 증기의 바이스 패스 현상이 완전히 사라지게 되고, 이에 따라 배열회수보일러의 최대출력도 극대화시킬 수 있다.The present invention completely blocks the gap between the baffles of both modules with a baffle cover having a very simple structure while maintaining the circular shape of the center baffle, thereby completely eliminating the vapor passing phenomenon of the steam, thereby maximizing the maximum output of the batch recovery boiler .

또, 사각형 배플 커버는 한 모서리만 일측 센터 배플의 하판에 고정되고 나머지 부분은 자유상태로 존치되어 열팽창 및 냉각 수축 시 센터 배플 및 상하층 가림판이 구속받지 않고 자유롭게 늘어나거나 수축되므로 센터 배플은 물론 배플 커버도 일절 변형되지 않는다.
In addition, the rectangular baffle cover is fixed on the lower plate of the center baffle of one side and the remaining portion is kept in the free state, so that the center baffle and the upper and lower floor covering plates are freely stretched or contracted without any restraint during thermal expansion and cooling shrinking. The cover is not deformed at all.

도 1은 양 튜브 모듈에서 바이 패스현상의 빌미가 되는 틈을 설명하기 위한 정면도
도 2는 양쪽 튜브 모듈 사이의 틈을 설명하기 위한 평면예시도
도 3은 도 2의 정면 예시도
도 4는 튜브모듈의 전면과 후면에 본 발명의 배플 커버가 부착되어 틈을 차단한 상태를 보인 평면예시도
도 5는 도 4의 정면 예시도
도 6은 배플 커버의 분해 사시도Fig. 1 is a front view for explaining gaps in a bypass phenomenon in both tube modules
Fig. 2 is a plan view for explaining a gap between both tube modules
Figure 3 is a front view of Figure 2
FIG. 4 is a plan view showing a state in which a baffle cover of the present invention is attached to the front and rear surfaces of a tube module,
Figure 5 is a frontal view of Figure 4
6 is an exploded perspective view of the baffle cover

도 1에서와 같이, 배열회수보일러에는 고온의 폐열로부터 열을 회수하는 요소인 하프형상의 튜브 모듈(1,2)이 다수로 배열 설치되고, 각 튜브 모듈(1,2)의 측면 가장자리에는 튜브의 지지체 기능을 하도록 센터 배플(3.4)이 수직으로 설치되어 있다.As shown in FIG. 1, a plurality of half-shaped tube modules 1 and 2, which are elements for recovering heat from high-temperature waste heat, are arranged in the array recovery boiler. The center baffle (3.4) is installed vertically so as to function as a support of the center baffle (3.4).

복수의 튜브 모듈을 배열 설치할 경우, 도 2 및 도 3에서와 같이 양쪽 모듈의 센터 배플(3,4) 사이에 열팽창을 고려하여 최소한의 틈(5)을 두고 설치된다. 상기 틈(5)은 증기가 새어 나가는 바이 패스현상이 일어나는 부분으로, 배열회수보일러의 최대출력을 저하시키는 원인으로 지적되어 온 부분이다.
When a plurality of tube modules are arranged, a minimum gap 5 is provided between the center baffles 3 and 4 of the two modules in consideration of thermal expansion as shown in Figs. 2 and 3. The gap (5) is a part where a bypass phenomenon occurs in which steam leaks, and is a part that has been pointed out as a cause of lowering the maximum output of the batch recovery boiler.

본 발명은 도 1과 같이 다층으로 형성된 양쪽 튜브 모듈(1,2)의 전면과 후면의 틈(5)에 이중 겹침형 가림판을 설치하여 양쪽 튜브 모듈(1,2) 사이의 틈새를 막아주도록 하되, 각 층(F)의 가림판 경계부(H)에는 배플커버(8)를 설치하여 상층 가림판과 하층 가림판의 외단을 포위하듯이 감싸주며, 상기 배플커버(8)는 각 층을 구분하는 진동방지판(V)과 결속되어 지탱하도록 구성되어 있다.1, a dual overlap type cover plate is installed in the gap 5 between the front and rear surfaces of the two tube modules 1 and 2 formed in a multi-layered structure as shown in FIG. 1 so as to block the gap between the two tube modules 1 and 2. [ A baffle cover 8 is provided at the boundary H of the covering plate of each layer F so as to surround the outer ends of the upper cover plate and the lower layer cover plate so that the baffle cover 8 separates each layer (V), which is provided with a vibration preventing plate (V).

상기한 본 발명의 구성은 도 4, 도 5, 도 6에 표시하고 있다.The configuration of the present invention described above is shown in Figs. 4, 5, and 6. Fig.

본 발명은 도 4, 도 5, 도 6과 같이 양쪽 튜브 모듈(1,2)에서 센터 배플 사이의 틈(5)을 막아주기 위해서 각 층(F)마다 설치되는 가림판은 외부판(6)과 내부판(7)이 겹쳐지는 이중판체의 구조로 형성되어 있으며, 외부판(6)과 내부판(7)은 이음매를 용접하지 않고 겹쳐서 설치하여 구속하지 않음으로써 상호 간섭으로 인한 파손을 예방토록 한다.4, 5, and 6, a cover plate provided for each layer F is disposed on the outer plate 6 to cover the gap 5 between the center baffles in the tube modules 1 and 2, The outer plate 6 and the inner plate 7 are formed by overlapping and not restricting the joints so as not to weld the joints, thereby preventing damage due to mutual interference. do.

본 발명은 도 5 및 도 6에서와 같이, 상측 가림판과 하측 가림판 사이에 배플 커버(8)를 부착하며, 외부판(6)과 내부판(7)은 상,하단부외 내면부를 튜브 모듈의 각 층에 장착된 센터배플(3)(4)에 고정하여 조립상태를 유지한다.5 and 6, the baffle cover 8 is attached between the upper shielding plate and the lower shielding plate, and the outer plate 6 and the inner plate 7 are connected to the upper and lower end outer- And fixed to the center baffle 3 (4) mounted on each layer of the plate.

상기 배플 커버(8)는 외부판(6)과 내부판(7)의 외면에 오버 랩 시키고, 그 하단 일부분을 하층 가림판에 용접 등의 부착수단(9)에 의해서 고정하여 열팽창과 수축 시 상하 및 좌우로의 변형이 발생하면 그대로 슬립되도록 가변성을 둬 상호 구속하지 않음으로써 가림핀과 배플 커버(8)의 변형 내지는 파손을 방지하고, 외부판(6)과 내부판(7) 간의 미세한 틈도 막아 증기가 바이 패스되지 못하게 한다.The baffle cover 8 overlaps the outer surface of the outer plate 6 and the inner plate 7 and a lower end portion of the baffle cover 8 is fixed to the lower layer covering plate by attaching means 9 such as welding, The deformation or breakage of the clipping pin and the baffle cover 8 is prevented and the fine clearance between the outer plate 6 and the inner plate 7 is prevented Prevents steam from bypassing.

도 5, 도 6에서와 같이, 이중형 가림판은 자유단(내측단)이 부분적으로 겹쳐지도록 부착하되 상측 가림판과 하층 가림판은 상호 간섭을 배제하기 위해 상하로 간극(10)을 두고 설치한다.As shown in FIGS. 5 and 6, the double-type shielding plate is installed such that the free ends (inner ends) thereof partially overlap with each other, but the upper shielding plate and the lower shielding plate are installed with the upper and lower gaps 10 to eliminate mutual interference .

상기한 본 발명의 배플 커버(8)는 이 간극(10)을 포함하여 센터 배플(3)(4) 간의 미세한 틈, 즉 가림판 끼리 겹쳐진 틈까지도 함께 막아 주고, 본 발명의 가림판과 배플커버를 튜브모듈의 전단부와 후단부에 모두 설치하여 전후방 틈새를 막아주도록 설치함으로써, 가스터빈 배출가스의 바이 패스현상을 차단하여 배열회수보일러의 최대출력을 극대화할 수 있다.
The baffle cover 8 of the present invention includes the gaps 10 to prevent the gaps between the center baffles 3 and 4 from overlapping with each other, Is installed at both the front end and the rear end of the tube module to block the front and rear gaps so that the bypass phenomenon of the gas turbine exhaust gas is blocked, thereby maximizing the maximum output of the arrangement recovery boiler.

1,2: 튜브 모듈
3,4: 센터 배플
6: 외부판
7: 내부판
8: 배플 커버
10: 간극
V: 진동방지판1,2: tube module
3,4: Center baffle
6: External plate
7: Internal plate
8: Baffle cover
10: Clearance
V: anti-vibration plate

Claims (4)

배열회수보일러 내에서 튜브로 열매가 흐르는 방향을 따라 정연하게 설치된 전·후 튜브 모듈에 있어서, 양쪽 튜브 모듈 사이의 틈새 막음용 외부판과 내부판으로 구성된 가림판을 각 층마다 설치하고, 상층과 하층 사이에 열팽창을 고려한 간극을 두고 부착된 상,하층 가림판의 경계부 외면에 배플 커버를 부착하여 양쪽 튜브 모듈 사이에서의 증기 바이 패스 현상을 방지한 것을 특징으로 하는 배열회수보일러용 센터 배플 틈새 막음장치.
The present invention relates to a tube module for installing a front and a rear tube module arranged along a direction of a flow of a fruit in a tube in an array recovery boiler, And a baffle cover is attached to the outer surface of the boundary of the upper and lower cover plates attached with a gap considering the thermal expansion between the lower layers to prevent the steam bypass phenomenon between the two tube modules. Device.
제1항에 있어서, 상기 배플 커버는 하부 일측 모서리를 하층 가림판에 고정한 것을 특징으로 하는 배열회수보일러용 센터 배플 틈새 막음장치.
The apparatus of claim 1, wherein the baffle cover has one lower edge fixed to the lower layer covering plate.
제1항에 있어서, 상기 가림판의 외부판과 내부판은 이중으로 겹쳐서 설치한 것을 특징으로 하는 배열회수보일러용 센터 배플 틈새 막음장치.
The apparatus of claim 1, wherein the outer plate and the inner plate of the closure plate are double stacked.
제1항에 있어서, 상기 가림판과 배플커버를 튜브 모듈의 전단부와 후단부에 설치한 것을 특징으로 한 배열회수보일러용 센터 배플 틈새 막음장치.The apparatus according to claim 1, wherein the closure plate and the baffle cover are provided at the front end and the rear end of the tube module.
KR1020130140266A 2013-11-18 2013-11-18 Blocking device of center baffle gap for heat recovery steam generator KR101515794B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101984008B1 (en) * 2017-11-27 2019-05-30 비에이치아이 주식회사 Anti-vibration Baffle of HRSG

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200329824Y1 (en) * 2003-07-12 2003-10-10 두산중공업 주식회사 center baffle of heat recovery steam generator
EP1650497A1 (en) * 2003-07-30 2006-04-26 Babcock-Hitachi Kabushiki Kaisha Heat exchanger tube panel module, and method of constructing exhaust heat recovery boiler using the module
JP3883689B2 (en) * 1998-03-16 2007-02-21 バブコック日立株式会社 Waste heat recovery boiler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3883689B2 (en) * 1998-03-16 2007-02-21 バブコック日立株式会社 Waste heat recovery boiler
KR200329824Y1 (en) * 2003-07-12 2003-10-10 두산중공업 주식회사 center baffle of heat recovery steam generator
EP1650497A1 (en) * 2003-07-30 2006-04-26 Babcock-Hitachi Kabushiki Kaisha Heat exchanger tube panel module, and method of constructing exhaust heat recovery boiler using the module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101984008B1 (en) * 2017-11-27 2019-05-30 비에이치아이 주식회사 Anti-vibration Baffle of HRSG

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