WO2020105342A1 - ボイラ装置 - Google Patents

ボイラ装置

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Publication number
WO2020105342A1
WO2020105342A1 PCT/JP2019/041380 JP2019041380W WO2020105342A1 WO 2020105342 A1 WO2020105342 A1 WO 2020105342A1 JP 2019041380 W JP2019041380 W JP 2019041380W WO 2020105342 A1 WO2020105342 A1 WO 2020105342A1
Authority
WO
WIPO (PCT)
Prior art keywords
outlet manifold
reheater
manifold
furnace
width direction
Prior art date
Application number
PCT/JP2019/041380
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
登敏 山下
山口　達也
俊弘 川上
功至 栗栖
Original Assignee
三菱日立パワーシステムズ株式会社
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 三菱日立パワーシステムズ株式会社 filed Critical 三菱日立パワーシステムズ株式会社
Priority to CN201980050424.XA priority Critical patent/CN112513525B/zh
Publication of WO2020105342A1 publication Critical patent/WO2020105342A1/ja
Priority to PH12021550752A priority patent/PH12021550752A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof

Definitions

  • the present invention relates to a boiler device in which a reheater and the like are arranged in a combustion gas passage, and particularly to a manifold arrangement configuration of a reheater including a primary reheater and a secondary reheater.
  • a furnace that burns fuel is installed vertically, and a flue is connected above this furnace.
  • the flue has a combustion gas passage therein, and a heat exchanger for generating steam is arranged in the combustion gas passage. Then, the combustion gas generated in the furnace flows through the combustion gas passage to heat the boiler feed water flowing through the heat exchanger to generate steam.
  • the heat exchanger arranged in the combustion gas passage is composed of a superheater, reheater and economizer.
  • the boiler feed water supplied from the feed water pump to the heat exchanger is preheated by the economizer, then becomes saturated steam while being supplied to the water pipe of the furnace wall, and is heated by the combustion gas in the superheater.
  • the superheated steam generated by the superheater is supplied to the high-pressure turbine and used for rotational driving, and the steam after rotational driving is supplied to the reheater.
  • the reheater is composed of a primary reheater (low temperature reheater) and a secondary reheater (high temperature reheater), and the steam discharged from the high-pressure turbine is the primary reheater. After being overheated again by the secondary reheater, it is supplied to the low-pressure turbine and driven to rotate (see, for example, Patent Document 1).
  • a ceiling chamber called a penthouse is provided in the ceiling part of the furnace and the combustion gas passage, and in this penthouse, the upper part of the heat transfer tube group that constitutes the suspended heat exchanger is connected.
  • a plurality of pipe lines and a manifold to which these pipe lines are connected are arranged.
  • the manifold has an inlet manifold and an outlet manifold, and in a reheater composed of a primary reheater and a secondary reheater, the outlet manifold and the secondary reheater of the primary reheater are placed in the penthouse. Is connected to the inlet manifold of the container.
  • the outlet manifold of the primary reheater is divided into two parts in the width direction of the furnace, and then the left outlet manifold of the primary reheater is connected to the right side of the inlet manifold of the secondary reheater.
  • the present invention has been made in view of the circumstances of the conventional art as described above, and an object thereof is to suppress the steam temperature difference in the furnace width direction in the middle portion of the primary reheater and the secondary reheater while increasing the building height. It is to provide a boiler device that can reduce the size.
  • a typical present invention is a furnace for burning fuel, a reheater arranged in a combustion gas passage through which a combustion gas generated in the furnace flows, the furnace and the combustion.
  • a penthouse provided on the ceiling of the gas passage, and the reheater is composed of a primary reheater and a secondary reheater, and these primary reheater and secondary reheater are configured.
  • the outlet manifold of the primary reheater has a center in the furnace width direction.
  • a first connecting pipe leading to the right side of the inlet manifold of the container, the right outlet manifold is connected to a second connecting pipe leading to the left side of the inlet manifold, and the left outlet manifold and the right side are connected.
  • the outlet manifold is characterized in that it is set at substantially the same height by shifting its position in the front-rear direction orthogonal to the furnace width direction.
  • FIG. 1 is an overall configuration diagram of a boiler device according to an embodiment of the present invention.
  • this boiler device 1 includes a furnace 2 that burns fuel, a combustion gas passage 3 that is a flow path of combustion gas generated in the furnace 2, and a ceiling portion of the furnace 2 and the combustion gas passage 3. And a penthouse 4 provided in.
  • the furnace 2 and the combustion gas passage are suspended from the beam portion 5a of the boiler steel frame 5 using a suspension rod and a suspension beam (not shown).
  • the boiler building is constructed so as to cover the boiler steel frame 5 (not shown).
  • the furnace 2 side of the boiler device 1 is referred to as the front of the can
  • the outlet side of the combustion gas passage 3 is referred to as the rear of the can.
  • the left side of the furnace width direction when viewed from the front side of the can is the left side of the can and the right side is It is called a can right.
  • a primary superheater 6, a secondary superheater 7, a tertiary superheater 8 and a primary reheater are provided in the combustion gas passage 3 connected to the upper part of the furnace 2.
  • a furnace 9, a secondary reheater 10, and a economizer (not shown) are provided, and heat is exchanged between the combustion gas generated in the furnace 2 and the boiler feed water flowing through the heat exchanger.
  • the boiler feedwater supplied from the feedwater pump to the heat exchanger is preheated by the economizer and then heated while being supplied to the water pipe of the furnace wall to become saturated steam.
  • the superheated steam heated in the furnace 2 is introduced to the inlet side of the primary superheater 6, then superheated to some extent in the primary superheater 6 and then introduced into the secondary superheater 7.
  • the superheated steam introduced into the secondary superheater 7 is further superheated in the secondary superheater 7 and introduced into the tertiary superheater 8 and is heated to a predetermined temperature in the tertiary superheater 8, and then the tertiary superheater 8 is heated. It is discharged from the outlet side and supplied to a high pressure turbine (not shown).
  • the high-pressure turbine is rotationally driven by the superheated steam that has exited the tertiary superheater 8, and the steam that has worked in the high-pressure turbine is introduced to the inlet side of the primary reheater 9.
  • the steam introduced from the high-pressure turbine to the primary reheater 9 is superheated in the primary reheater 9 and then introduced into the secondary reheater 10, and is heated to a predetermined temperature in the secondary reheater 10.
  • 1 is a configuration diagram showing an example of the positional relationship between the superheater and the reheater, and does not faithfully show the arrangement of the heat transfer tubes, the header, the manifolds, the wall of the boiler, the duct structure, and the like.
  • the ceiling portion 11 of the furnace 2 and the combustion gas passage 3 is manufactured by alternately connecting a plurality of heat transfer tubes and the heat transfer tubes. Then, in the penthouse 4 provided above the ceiling part 11, the upper part of the heat transfer tube group constituting the superheaters 6, 7, 8 and the reheaters 9, 10 which are hanging heat exchangers, and these A pipe side and a manifold connected to the heat transfer pipe group are arranged.
  • a reheater including a low temperature side primary reheater 9 and a high temperature side secondary reheater 10 is used, and these primary reheaters are used.
  • the outlet manifold 9 and the inlet manifold of the secondary reheater 10 are connected in the penthouse 4.
  • the manifold layout configuration of the primary reheater 9 and the secondary reheater 10 will be described in detail with reference to FIGS. 2 to 4.
  • FIG. 2 is a perspective view showing a manifold arrangement of the primary reheater and the secondary reheater
  • FIG. 3 is a plan view of the manifold arrangement
  • FIG. 4 is a side view of the manifold arrangement.
  • the outlet manifold 12 of the primary reheater 9 is divided into left and right in the furnace width direction, and one of them is a left outlet manifold 13 extending from the central portion in the furnace width direction toward the left side wall.
  • the other is a right side outlet manifold 14 extending from the central portion in the furnace width direction toward the right side wall.
  • the left outlet manifold 13 and the right outlet manifold 14 are arranged so as to be displaced in the front-rear direction.
  • the right outlet manifold 14 is arranged so as to be displaced rearward with respect to the left outlet manifold 13. Has been done.
  • the first connecting pipe 15 includes a first linear portion 15a arranged coaxially with the left outlet manifold 13, and a first turn portion 15b which is diverted from the first linear portion 15a to the front side of the can and extends to the inlet manifold 16.
  • the first linear portion 15a faces the right outlet manifold 14 in parallel.
  • the one end of the second connecting pipe 17 is connected to the left end of the right outlet manifold 14, and the other end of the second connecting pipe 17 is connected to the left end of the inlet manifold 16.
  • the second connecting pipe 17 includes a second straight line portion 17a arranged coaxially with the right outlet manifold 14, and a second turn portion 17b extending from the second straight line portion 17a to the front side of the can and extending to the inlet manifold 16.
  • the second linear portion 17a faces the left outlet manifold 13 in parallel. Therefore, the second turn portion 17b of the second connecting pipe 17 is larger than the first turn portion 15b of the first connecting pipe 15 by a length corresponding to the distance between the left outlet manifold 13 and the right outlet manifold 14 in the front-rear direction. It is set longer.
  • a plurality of pipe lines 18 are welded at regular intervals in the furnace width direction, and on the front side of the can of the right-side outlet manifold 14, a plurality of pipe lines 19 are arranged. Welded at regular intervals in the direction. That is, the side wall 18 connected to the left side outlet manifold 13 projects rearward toward the second straight portion 17 a coaxially arranged with the right side outlet manifold 14, and the side wall 19 connected to the right side outlet manifold 14 is left side. It projects forward toward the first straight portion 15a coaxially arranged with the outlet manifold 13.
  • the upper ends of the corresponding heat transfer tubes 20 of the primary reheater 9 are welded to the respective tube sides 18 and 19, and the upper portions of these heat transfer tubes 20 penetrate the ceiling portion 11 and reach the inside of the penthouse 4. ..
  • the arrows in FIG. 2 indicate the flow of steam, and of the steam introduced from the inlet manifold of the primary reheater 9 into the outlet manifold 12, the steam introduced into the left outlet manifold 13 flows through the first connecting pipe 15.
  • the steam that is supplied to the right end portion of the inlet manifold 16 of the secondary reheater 10 and introduced into the right outlet manifold 14 is supplied to the left end portion of the inlet manifold 16 through the second connecting pipe 17. That is, although there is a temperature difference between the steam temperature in the manifold on the left and right in the furnace width direction, in the manifold arrangement configuration according to the present embodiment, the outlet manifold 12 of the primary reheater 9 and the inlet manifold 16 of the secondary reheater 10. By swapping the left and right sides between and, the difference in steam temperature between the left and right sides of the furnace is eliminated.
  • the left outlet manifold 13 and the right outlet manifold 14, which are displaced in the front-rear direction, are set to substantially the same height and arranged on substantially the same plane.
  • the inlet manifold 16 of the secondary reheater 10 is also set to have substantially the same height as the left outlet manifold 13 and the right outlet manifold 14, and the left outlet manifold 13, the right outlet manifold 14, and the inlet manifold 16 are the same. Are arranged on substantially the same plane. Since the manifold, which is the intermediate portion between the primary reheater 9 and the secondary reheater 10, is arranged in a plane within the penthouse 4 as described above, the height of the penthouse 4 can be reduced. ..
  • the above-described manifold arrangement configuration is made possible by setting the left outlet manifold 13 and the right outlet manifold 14 that are displaced in the front-rear direction at substantially the same height and then making the left outlet manifold 13 Is connected to the right end of the inlet manifold 16 via the first connecting pipe 15, and the right outlet manifold 14 is connected to the left end of the inlet manifold 16 via the second connecting pipe 17.
  • the outlet manifold 12 of the primary reheater 9 includes the left outlet manifold 13 extending from the central portion in the furnace width direction toward the left side wall, and the furnace width direction. It is divided into a right outlet manifold 14 extending from the central portion toward the right side wall, the left outlet manifold 13 is connected to the right end portion of the inlet manifold 16 via the first connecting pipe 15, and the right outlet manifold 14 is connected to the second connecting portion. After being connected to the left end portion of the inlet manifold 16 via a pipe 17, the left outlet manifold 13 and the right outlet manifold 14 are arranged at substantially the same height and displaced in the front-rear direction.
  • the left and right of the outlet manifold 12 of the primary reheater 9 and the inlet manifold 16 of the secondary reheater 10 can be interchanged, and the steam temperature difference in the furnace width direction can be suppressed, and The height of the penthouse 4 can be reduced to reduce the building height of the boiler device 1.
  • the pipe line 18 connected to the left side outlet manifold 13 projects rearward toward the second straight line portion 17a coaxially arranged with the right side outlet manifold 14, and the pipe line 19 connected to the right side outlet manifold 14 forms the left side outlet manifold. Since it projects forward toward the first straight portion 15a coaxially arranged with 13, the pipe outlets 18, 19 connected to the left outlet manifold 13 and the right outlet manifold 14 should be arranged in a line at the same height. As a result, the lengths of the heat transfer tubes 20 connected to the respective tubes 18 and 19 in the penthouse 4 can be made uniform.
  • the right outlet manifold 14 is displaced rearward with respect to the left outlet manifold 13 of the primary reheater 9, but conversely, the right outlet manifold 14 is positioned forward.
  • the left outlet manifold 13 may be displaced rearward.
  • the inlet manifold 16 of the secondary reheater 10 is arranged slightly below the left outlet manifold 13 and the right outlet manifold 14 of the primary reheater 9 (see FIG. 4).
  • the left outlet manifold 13, the right outlet manifold 14, and the inlet manifold 16 may be set to substantially the same height.
  • Boiler apparatus Furnace 3 Combustion gas passage 4 Penthouse 5 Boiler steel frame 6 Primary superheater 7 Secondary superheater 8 Tertiary superheater 9 Primary reheater 10 Secondary reheater 11 Ceiling part 12 Primary reheater outlet manifold 13 Left outlet manifold of primary reheater 14 Right outlet manifold of primary reheater 15 First connecting pipe 15a First straight portion 15b First turn portion 16 Secondary manifold reheater inlet manifold 17 Second connecting pipe 17a Second straight line Part 17b Second turn part 18,19 Tube side 20 Heat transfer tube of primary reheater

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Incineration Of Waste (AREA)
  • Combustion Of Fluid Fuel (AREA)
PCT/JP2019/041380 2018-11-21 2019-10-21 ボイラ装置 WO2020105342A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980050424.XA CN112513525B (zh) 2018-11-21 2019-10-21 锅炉装置
PH12021550752A PH12021550752A1 (en) 2018-11-21 2021-04-05 Boiler device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-218585 2018-11-21
JP2018218585A JP6936207B2 (ja) 2018-11-21 2018-11-21 ボイラ装置

Publications (1)

Publication Number Publication Date
WO2020105342A1 true WO2020105342A1 (ja) 2020-05-28

Family

ID=70773228

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/041380 WO2020105342A1 (ja) 2018-11-21 2019-10-21 ボイラ装置

Country Status (4)

Country Link
JP (1) JP6936207B2 (zh)
CN (1) CN112513525B (zh)
PH (1) PH12021550752A1 (zh)
WO (1) WO2020105342A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0960810A (ja) * 1995-08-29 1997-03-04 Ishikawajima Harima Heavy Ind Co Ltd ボイラ吊下形放射過熱器の管寄構造
JP2012193939A (ja) * 2011-03-18 2012-10-11 Babcock Hitachi Kk 伝熱管構造
US20160032784A1 (en) * 2014-07-29 2016-02-04 Alstom Technology Ltd Method for low load operation of a power plant with a once-through boiler
JP2017089909A (ja) * 2015-11-02 2017-05-25 三菱日立パワーシステムズ株式会社 節炭器及びボイラ並びに伝熱管の補修方法
JP2018009762A (ja) * 2016-07-15 2018-01-18 株式会社Ihi 熱交換器及びボイラ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2851865Y (zh) * 2005-06-07 2006-12-27 王孟浩 减小锅炉热偏差的蒸汽流量适配器
CN203628627U (zh) * 2013-12-20 2014-06-04 哈尔滨锅炉厂有限责任公司 带墙式再热器的二次再热锅炉

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0960810A (ja) * 1995-08-29 1997-03-04 Ishikawajima Harima Heavy Ind Co Ltd ボイラ吊下形放射過熱器の管寄構造
JP2012193939A (ja) * 2011-03-18 2012-10-11 Babcock Hitachi Kk 伝熱管構造
US20160032784A1 (en) * 2014-07-29 2016-02-04 Alstom Technology Ltd Method for low load operation of a power plant with a once-through boiler
JP2017089909A (ja) * 2015-11-02 2017-05-25 三菱日立パワーシステムズ株式会社 節炭器及びボイラ並びに伝熱管の補修方法
JP2018009762A (ja) * 2016-07-15 2018-01-18 株式会社Ihi 熱交換器及びボイラ

Also Published As

Publication number Publication date
JP6936207B2 (ja) 2021-09-15
CN112513525A (zh) 2021-03-16
CN112513525B (zh) 2022-06-10
PH12021550752A1 (en) 2021-10-11
JP2020085309A (ja) 2020-06-04

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