WO2012041002A1 - 大型蒸汽发生器 - Google Patents

大型蒸汽发生器 Download PDF

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Publication number
WO2012041002A1
WO2012041002A1 PCT/CN2011/001491 CN2011001491W WO2012041002A1 WO 2012041002 A1 WO2012041002 A1 WO 2012041002A1 CN 2011001491 W CN2011001491 W CN 2011001491W WO 2012041002 A1 WO2012041002 A1 WO 2012041002A1
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WO
WIPO (PCT)
Prior art keywords
boiler wall
boiler
wall
steam generator
header
Prior art date
Application number
PCT/CN2011/001491
Other languages
English (en)
French (fr)
Inventor
周一
卢勇
Original Assignee
上海锅炉厂有限公司
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 上海锅炉厂有限公司 filed Critical 上海锅炉厂有限公司
Priority to PL402743A priority Critical patent/PL225405B1/pl
Publication of WO2012041002A1 publication Critical patent/WO2012041002A1/zh

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Classifications

    • 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
    • F22B37/24—Supporting, suspending, or setting arrangements, e.g. heat shielding
    • F22B37/244—Supporting, suspending, or setting arrangements, e.g. heat shielding for water-tube steam generators suspended from the top
    • 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
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • F22B37/207—Supporting arrangements for drums and collectors

Definitions

  • the invention relates to a large steam generator. Background technique
  • the conventional method is to use a boom or a spring and a boom to fix the steel structure to directly support the heavy objects.
  • This method is feasible in the case where the expansion displacement of the weight to be suspended is zero or the expansion displacement is not large, and each individual weight requires a separate boom and spring device.
  • the displacement of the suspension box is too large, and the conventional method can not meet the requirements. Disclosure of invention
  • the invention provides a large steam generator, which uses a suspension pipe and a boiler wall to support the supporting beam, solves the problem that the relative expansion displacement of the header caused by the large temperature difference is large and difficult to support, and saves a large number of box cranes.
  • the rack unit and installation space are both safe and economical.
  • the present invention provides a large steam generator comprising a bracket, a boiler wall erected under the bracket and a plurality of stages of heated surface tube bundles, and a header disposed at both ends of the heated surface tube bundle, the boiler
  • the wall comprises a plurality of tube bundles for forming a tube bundle of the water wall of the boiler; characterized in that a plurality of tubes are taken from the tube bundle of the boiler wall as a suspension tube for supporting the header.
  • the number of the above-mentioned suspension pipes accounts for 3% to 10% of the number of tube bundles of all the boiler walls.
  • the above boiler wall comprises an upper part of the boiler wall, a lower part of the boiler wall connected below the upper part of the boiler wall, and a bottom of the boiler wall connected below the lower part of the boiler wall.
  • the distance L from the suspension pipe to the boiler wall is 0.1 ⁇ to 0.4 ⁇ .
  • the generator further comprises a plurality of header support beams erected between the suspension pipe and the boiler wall, wherein the one end of the header support beam is fixed to the boiler wall, and the other end is fixed to the suspension pipe;
  • the above-mentioned header is hoisted or supported on the hoisting beam of the header.
  • the bracket includes a plurality of vertically disposed bracket pillars, and a bracket beam spanned on the plurality of bracket pillars.
  • the lower portion of the suspension pipe is fixed to the side wall of the boiler wall, and the upper portion of the suspension pipe is fixed to the bracket beam.
  • the suspension pipe described above is in communication with the boiler wall, or the suspension pipe is closed.
  • the cross-sectional area ratio of the flue gas passage surrounded by the upper part of the boiler wall and the lower part of the boiler wall is
  • the large steam generator of the present invention has the advantages that, in the present invention, the hanging pipe is in any state because the medium circulating in the hanging pipe and the medium temperature and pressure circulating in the boiler wall are similar.
  • the boiler wall and its internal heated face tube bundle can be substantially simultaneously expanded.
  • the header can also expand with the suspension pipe and the boiler wall, so that the relative displacement of the header and the boiler wall and the internal heating surface tube bundle is small, and the invention not only solves the relative expansion displacement of the header caused by the large temperature difference of the large steam generator.
  • Large and difficult the problem of hoisting, and save a lot of box support and hanger equipment and installation space, it is safe and economical.
  • Figure 1 is a schematic view showing the structure of a large steam generator of the present invention
  • FIG. 2 is a schematic structural view of an embodiment of a boiler wall of a large steam generator of the present invention
  • FIG. 3 is a schematic structural view of another embodiment of a boiler wall of a large steam generator of the present invention. The best way to implement the invention
  • the present invention describes a large steam generator comprising a bracket 1, a boiler wall 2 suspended under the bracket 1, a suspension tube 4 and a heated surface tube bundle 5, and a lower end of the suspension tube 4 a transition header 3 connected to the boiler wall 2, a plurality of header support beams 7 horizontally erected between the boiler wall 2 and the suspension pipe 4, erected or suspended in the headers of the respective header support beams 7 6.
  • a water-cooled wall lower header 8 is provided at the bottom of the boiler wall 2.
  • the heated surface tube bundle 5 is disposed in the boiler wall 2, and the both ends of the heated surface tube bundle 5 are connected to the respective headers 6 outside the boiler wall 2.
  • the bracket 1 includes a plurality of bracket posts la vertically disposed and horizontally mounted on the brackets A bracket beam lb on the column la, the bracket beam lb is supported by the bracket column la.
  • the boiler wall 2 is suspended under the bracket beam lb.
  • the boiler wall 2 contains a tube bundle and a steel plate to form a pattern wall structure, and the boiler wall 2 is provided with three types of heating surfaces.
  • the boiler wall 2 includes an upper portion 2a of the boiler wall, a lower portion 2b of the boiler wall connected to the upper portion 2a of the boiler wall, and a bottom 2c of the boiler wall connected to the lower portion 2b of the boiler wall, the upper portion 2a of the boiler wall, the lower portion 2b of the boiler wall, and
  • the bottom wall 2c of the boiler wall encloses a communicating flue gas passage, and the diameter of the flue gas passage surrounded by the upper portion 2a of the boiler wall is A.
  • An opening is provided at a bottom end of the flue gas passage surrounded by the bottom 2c of the boiler wall, and a water-cooled wall lower header 8 is provided on the edge of the opening.
  • the top of the boiler wall 2, the upper portion 2a of the boiler wall, the lower portion 2b of the boiler wall, and the bottom 2c of the boiler wall are each provided with a bundle of boiler walls 2.
  • the tube bundle of the boiler wall 2 at the lower portion 2b of the boiler wall is a spiral tube, and the spiral tube is enclosed to form a flue gas passage, and the spiral tube is provided with a medium.
  • the tube bundle of the boiler wall 2 at the upper portion 2a of the boiler wall is set as a vertical vertical tube which is arranged side by side in a sealed manner to form a flue gas escape.
  • the tube bundle is provided with a medium.
  • the top of the boiler wall 2 is provided with a tube bundle having a gap between the bundles, and a steel plate is provided in the gap to seal the gap.
  • the tube bundle disposed at the top of the boiler wall 2 may or may not be provided with a medium.
  • a transition box 3 is arranged between the vertical pipe at the upper part 2a of the boiler wall and the spiral pipe at the lower part 2b of the boiler wall, and the transition of the tube bundle of the boiler wall 2 from the spiral pipe to the vertical pipe, the transition header 3 It belongs to a kind of container. '
  • the tube bundle of the boiler wall 2 is the tube bundle constituting the water wall of the boiler, the upstream of which is connected to the water-cooling wall lower header 8 , and the downstream is connected to the water-cooled wall outlet header 9 , which is supported or suspended on the I-beam
  • the I-beam is fixed on the upper portion of the upper portion 2a of the boiler wall.
  • at least one tube bundle is taken out from the tube bundle of the boiler wall 2 disposed between the upper portion 2a of the boiler wall and the lower portion 2b of the boiler wall as the suspension tube 4.
  • the medium inside the pipe is used to heat the suspension pipe 4 and the remaining 99 bundles are still used as the bundle of boiler water wall . That is to say, only one pipe jumped out of the original steam-water process, and the amount was small, which would not affect the normal operation of the boiler water wall. In the actual operation, a small part of the total number of bundles of the boiler wall 2 is taken as the suspension pipe 4, which does not affect the normal operation of the boiler water wall.
  • the number of the hanging pipes 4 is 3% to 10% of the number of the tube bundles of all the boiler walls 2.
  • the upper end of the suspension pipe 4 is fixed to the bracket beam lb, so that the suspension pipe 4 is vertically suspended under the bracket beam lb and disposed at a side of the boiler wall 2 at a certain distance.
  • the upper end of the suspension pipe 4 can be connected to the tube bundle of the boiler wall 2 at the top of the boiler wall 2, and the upper end of the suspension pipe 4 can also be closed.
  • the distance L between the vertically suspended suspension pipe 4 and the boiler wall 2 is set to 0.1 A to 0.4 A, and A is the lower end of the direct suspension pipe 4 of the flue gas passage surrounded by the upper portion 2a of the boiler wall and the above The transition box 3 is connected.
  • the lower end of the suspension pipe 4 is taken out or introduced by a transition header 3 between a vertical pipe connected to the upper portion 2a of the boiler wall and a spiral pipe at the lower portion 2b of the boiler wall, and the suspension pipe 4 passes the transition.
  • a part of the medium in the bundle of the header 3 and the tube bundle of the boiler wall 2 communicating with the boiler wall 2 passes through the transition header 3 and enters the suspension pipe 4, and is transported upward along the suspension pipe 4 to the upper end of the suspension pipe 4.
  • the upper end of the suspension pipe 4 can communicate with a bundle of tubes disposed at the top of the boiler wall 2 to connect the suspension pipe 4 to the soda flow of the bundle of boiler walls 2 which is originally the boiler water wall.
  • the upper end of the suspension pipe 4 may be closed to terminate the transmission of the internal medium.
  • a plurality of stages of heated surface tube bundles 5 are suspended under the bracket beam lb and disposed inside the boiler wall 2, and are disposed in the flue gas passage surrounded by the upper portion 2a of the boiler wall.
  • the inlet and outlet of each stage of the heated surface tube bundle 5 pass through the boiler wall 2 to the outside of the boiler.
  • the header 6 is connected to the inlet and outlet of each end of the heated surface tube bundle 5 which exits the boiler wall 2.
  • Each of the headers 6 is correspondingly provided with a header support beam 7 which is horizontally erected between the upper part 2a of the boiler wall and the suspension pipe 4, one end of which is connected to the suspension pipe 4, and the other end is connected Connected to the side wall of boiler wall 2.
  • Each of the headers 6 is respectively supported or erected on the header support beam 7.
  • the inlet and outlet of the heating surface tube bundle 5 of each stage are passed out from the inside of the boiler wall 2 to the outside of the boiler wall 2, and a header box 6 is arranged corresponding to the inlet and outlet of each heating surface tube bundle 5, and a header box is erected. Beam 7.
  • the fixing manner of the header 6 is determined according to the relative position between the header 6 and the header supporting beam 7. If the header 6 is placed above the header support beam 7, the header 6 is placed on the header support beam 7. If the header 6 is placed below the header support beam 7, the header 6 is hoisted under the header support beam 7.
  • the tube bundle and suspension tube 4 of the boiler wall 2 may be made of carbon steel or alloy steel, such as 20G, SA106-C 15CrMoG, 12CrlMoVG, etc. Each material has its own thermal expansion coefficient at different temperatures.
  • part of the medium in the bundle of boiler wall 2 is from the pot
  • the furnace wall 2 flows into the suspension pipe 4.
  • the temperature and pressure of the medium flowing through the tube bundle 2 and the suspension tube 4 are similar.
  • the tube bundle 2 and the suspension tube 4 are selected to have the same or similar thermal expansion coefficient to ensure that any In the state, the suspension pipe 4 and the boiler wall 2, and the inner heating surface tube bundle 5 are almost simultaneously expanded.
  • the heated surface tube bundle 5 and the header 6 connected thereto are kept in synchronization, so that the header 6 and the boiler wall 2 are
  • the relative displacement of the heated surface tube bundle 5 is small, and the invention not only solves the problem that the large steam generator has large relative expansion displacement due to the large temperature difference, and is difficult to support, and saves a large number of the box support and hanger 7 device and installation. Space is both safe and economical.
  • the diameters of the flue gas passages surrounded by the boiler wall upper portion 2a, the boiler wall lower portion 2b, and the boiler wall bottom portion 2c are different and the cross-sectional areas are different.
  • the diameter A of the flue gas passage surrounded by the upper portion 2a of the boiler wall is smaller than the diameter of the flue gas passage surrounded by the lower portion 2b of the boiler wall.
  • the diameter of the flue gas passage surrounded by the upper portion 2a of the boiler wall and the lower portion 2b of the boiler wall is different, and the cross-sectional area is different.
  • a gradual transition portion gradually widening from top to bottom is provided between the upper portion 2a of the boiler wall and the lower portion 2b of the boiler wall.
  • FIG. 3 another embodiment of a boiler wall 2 is illustrated.
  • the diameter A of the flue gas passage surrounded by the upper portion 2a of the boiler wall is equal to the diameter B of the flue gas passage surrounded by the lower portion 2b of the boiler wall.
  • the boundary point between the upper portion 2a of the boiler wall and the lower portion 2b of the boiler wall is near the middle of the boiler wall, and the transition header 3 is placed at this position.
  • the cross-sectional area of the flue gas passage surrounded by the upper portion 2a of the boiler wall and the lower portion 2b of the boiler wall may be set to be the same or may be set to be different.
  • the gas passage sectional area ratio of the upper portion 2a of the boiler wall and the lower portion 2b of the boiler wall is 0.6 to 1.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Description

大型蒸汽发生器 技术领域
本发明涉及一种大型蒸汽发生器。 背景技术
目前， 重物的吊挂有多种方法， 常规方法是利用吊杆或弹簧加吊杆固定 于钢结构上， 以直接支吊重物。 这种方法对于所要吊挂重物膨胀位移为零或 膨胀位移不大的情况下可行， 并且每个单独重物需要单独的吊杆、弹簧装置。 对于大型蒸汽发生器， 所吊集箱位移过大， 用常规方法支吊无法满足要求。 发明的公开
本发明提供了一种大型蒸汽发生器， 利用悬吊管和锅炉壁来支撑支吊 梁， 解决由于温差大引起的集箱相对膨胀位移大而难以支吊的问题， 节省大 量的集箱支吊架装置和安装空间， 既安全， 又经济。
为实现上述目的， 本发明提供了一种大型蒸汽发生器， 该发生器包含支 架， 架设在该支架下的锅炉壁和若干级受热面管束， 设置在该受热面管束两 端的集箱， 该锅炉壁包含若干管束， 该管束用于组成锅炉水冷壁的管束； 其特点是， 从该锅炉壁的管束中取出若干根， 作为悬吊管， 该悬吊管用 于支吊集箱。
上述的悬吊管的根数占所有锅炉壁的管束根数的 3%〜10%。
上述的锅炉壁包含锅炉壁上部， 连接在该锅炉壁上部下的锅炉壁下部， 以及连接在该锅炉壁下部下的锅炉壁底部。
上述的悬吊管到锅炉壁的距离 L为 0.1Α〜0.4Α Α为上述的锅炉壁上部 所围成的烟气通道的直径。
本发生器还包含架设在上述的悬吊管与锅炉壁之间的若干根集箱支吊 梁， 该集箱支吊梁一端固定于该锅炉壁， 另一端固定于该悬吊管；
上述的集箱吊设或支设在该集箱支吊梁上。
1
确认本 上述的支架包含若干根竖直设置的支架立柱， 以及架设在若干根该支架 立柱上的支架横梁。
上述的悬吊管的下部与锅炉壁的侧壁固定，'该悬吊管的上部与支架横梁' 固定。
上述的悬吊管与锅炉壁连通， 或该悬吊管封闭设置。
上述的锅炉壁上部和锅炉壁下部各自围成的烟气通道的截面积比为
0.6-1
本发明大型蒸汽发生器和现有技术相比， 其优点在于， 本发明中， 由于 悬吊管中流通的介质和锅炉壁中流通的介质温度、 压力等参数相近， 在任何 状态下悬吊管和锅炉壁以及其内部受热面管束能够基本上保持同步膨胀。 如 此， 集箱亦能随悬吊管和锅炉壁膨胀， 使得集箱和锅炉壁、 内部受热面管束 相对位移较小， 本发明既解决了大型蒸汽发生器由于温差大引起的集箱相对 膨胀位移大而难以 ¾：吊的问题， 又节省了大量的集箱支吊架装置和安装空 间， 既安全， 又经济。 附图的简要说明
图 1为本发明大型蒸汽发生器的结构示意图；
图 2为本发明大型蒸汽发生器的锅炉壁的一种实施例的结构示意图； 图 3为本发明大型蒸汽发生器的锅炉壁的另一种实施例的结构示意图。 实现本发明的最佳方式
以下结合附图说明本发明的具体实施方式， 但本发明不局限于以下的实 施例。
如图 1所示， 本发明说明一种大型蒸汽发生器， 该发生器包含支架 1， 支 吊在支架 1下的锅炉壁 2、 悬吊管 4和受热面管束 5， 与悬吊管 4下端和锅炉壁 2 连接的过渡集箱 3， 水平架设在锅炉壁 2和悬吊管 4之间的若干条集箱支吊梁 7， 架设或悬吊在各个集箱支吊梁 7上的集箱 6， 设置在锅炉壁 2底部的水冷壁 下集箱 8。 受热面管束 5设置在锅炉壁 2内， 该受热面管束 5两端穿出锅炉壁 2 外与各个集箱 6连接。
支架 1包含垂直设置的若干根支架立柱 la 以及水平架设在该若干根支架 立柱 la上的支架横梁 lb， 该支架横梁 lb由支架立柱 la支撑。
锅炉壁 2悬吊在支架横梁 lb下， 该锅炉壁 2包含有管束和钢板， 形成模式 壁结构， 锅炉壁 2设有三类受热面。 锅炉壁 2包含锅炉壁上部 2a、 连接在该锅 炉壁上部 2a下的锅炉壁下部 2b， 以及连接在该锅炉壁下部 2b下的锅炉壁底部 2c, 上述的锅炉壁上部 2a、 锅炉壁下部 2b和锅炉壁底部 2c围成连通的烟气通 道， 锅炉壁上部 2a所围成连通的烟气通道的直径为 A。 在锅炉壁底部 2c围成 的烟气通道的底端设有开口， 在该开口的边缘上设有水冷壁下集箱 8。
锅炉壁 2的顶部、 锅炉壁上部 2a、 锅炉壁下部 2b和锅炉壁底部 2c都设有锅 炉壁 2的管束。
设置锅炉壁下部 2b处的锅炉壁 2的管束为螺旋管，该螺旋管封闭地围成烟 气通道， 该螺旋管中设有介质。 设置锅炉壁上部 2a处的锅炉壁 2的管束为竖直 设置的垂直管， 该垂直管密封地并排设置围成烟气通逸 该管束中设有介质。 锅炉壁 2的顶部设有管束， 该管束之间有间隙， 该间隙中设有钢板将该间隙密 封， 设置在锅炉壁 2的顶部的管束中可以设有介质， 也可以没有介质。
上述的锅炉壁 2的顶部、 锅炉壁上部 2a、 锅炉壁下部 2b和锅炉壁底部 2c 处的锅炉壁 2的管束之间相互连通， 同时设置在各管束中的介质也连通。 其 中， 锅炉壁上部 2a处的垂直管与锅炉壁下部 2b处的螺旋管之间设置有过渡集 箱 3， 起到锅炉壁 2的管束从螺旋管到垂直管的过渡作用， 该过渡集箱 3属于集 箱的一种。 '
锅炉壁 2的管束即为组成锅炉水冷壁的管束它的上游连接水冷壁下集箱 8, 下游连接水冷壁出口集箱 9， 该水冷壁出口集箱 9支设或吊设在工字钢上， 该工字钢固定在锅炉壁上部 2a的上部。 锅炉壁 2的管束中设有悬吊管 4， 从锅 炉壁 2的管束中的任意部位抽出至少一根管子， 该^ =子设为悬吊管 4。 在本实 施例中，采用从设置在锅炉壁上部 2a和锅炉壁下部 2b之间的锅炉壁 2的管束上 抽出至少一根管束设为悬吊管 4。
假设原来锅炉壁 2的管束有 100根， 若从中抽出 1根管子作为悬吊管 4， 同 时利用该管子内部的介质来加热悬吊管 4而其余的 99根管束仍然作为锅炉水 冷壁的管束。 也就是说仅有 1根管子跳出了原来的汽水流程， 量很少， 不会对 锅炉水冷壁的正常工作造成影响。现实操作中， 抽出锅炉壁 2管束的总数中占 很小一部分的管束设为悬吊管 4， 不会对锅炉水冷壁的正常运行造成影响。 在本发明大型蒸汽发生器中， 抽出作为悬吊管 4的根数占所有锅炉壁 2的 管束根数的 3%~10%。
悬吊管 4的上端固定于支架横梁 lb， 使悬吊管 4竖直悬吊在支架横梁 lb 下， 并间隔一定距离设置在锅炉壁 2的侧边。 在锅炉壁 2的顶部， 该悬吊管 4 的上端可以与锅炉壁 2的顶部处的锅炉壁 2的管束连接该悬吊管 4的上端也可 以封闭设置。 竖直悬吊的悬吊管 4与锅炉壁 2之间的距离 L设为 0.1A〜0.4A， A 为锅炉壁上部 2a所围成连通的烟气通道的直 悬吊管 4的下端与上述的过渡 集箱 3连接。
本实施例中，悬吊管 4的下端由连接在锅炉壁上部 2a位置的垂直管和锅炉 壁下部 2b位置的螺旋管之间的过渡集箱 3引出或引入， 该悬吊管 4通过该过渡 集箱 3与上述锅炉壁 2的管束连通锅炉壁 2的管束内的部分介质通过过渡集箱 3进入悬吊管 4， 沿着悬吊管 4向上传输至悬吊管 4的上端。悬吊管 4的上端可以 与设置在锅炉壁 2顶部的管束连通， 使悬吊管 4接入原作为锅炉水冷壁的锅炉 壁 2的管束的汽水流程中。 或者悬吊管 4的上端也可采用封闭设置， 结束其内 部介质的传输。
若干级受热面管束 5支吊在支架横梁 lb下， 并设置在锅炉壁 2内部， 设置 在锅炉壁上部 2a所围成的烟气通道中。每级受热面管束 5两端的进口和出口都 穿过锅炉壁 2至锅炉外部在受热面管束 5穿出锅炉壁 2外的每一端的进口和出 口上都连接有集箱 6。
每一个集箱 6都对应设有一根集箱支吊梁 7，集箱支吊梁 7水平架设在锅炉 壁上部 2a与悬吊管 4之间， 其一端连接在悬吊管 4上， 另一端连接在锅炉壁 2 侧壁上。 各个集箱 6分别支设或架设在集箱支吊梁 7上。
各级受热面管束 5的进口和出口由锅炉壁 2的内部穿出至锅炉壁 2的外 部， 对应每个受热面管束 5的进出口上设置一个集箱 6， 并架设一根集箱支吊 梁 7。 根据集箱 6与集箱支吊梁 7之间的相对位置， 确定集箱 6的固定方式。 若 集箱 6设置在集箱支吊梁 7的上方， 则将集箱 6支设在集箱支吊梁 7上。若集箱 6 设置在集箱支吊梁 7的下方， 则将集箱 6吊设在集箱支吊梁 7下。
锅炉壁 2的管束和悬吊管 4常用材质可为碳钢或合金钢， 如 20G、 SA106-C 15CrMoG、 12CrlMoVG等等， 每种材料在不同温度下均有各自的 热膨胀系数。在大型蒸汽发生器 行过程中， 锅炉壁 2管束内的部分介质从锅 炉壁 2流入悬吊管 4。 锅炉壁 2管束和悬吊管 4中流通的介质温度、 压力等参数 相近， 根据管束中流通介质的温度， 锅炉壁 2管束和悬吊管 4选择热膨胀系数 相同或相近的材料， 以保证在任何状态下悬吊管 4和锅炉壁 2， 以及其内部受 热面管束 5几乎同步膨) ¾最终使受热面管束 5和与其相连接的集箱 6保持同步 膨胀， 使得集箱 6和锅炉壁 2、 受热面管束 5相对位移较小， 本发明既解决了大 型蒸汽发生器由于温差大引起的集箱 6相对膨胀位移大而难以支吊的问题又 节省了大量的集箱支吊架 7装置和安装空间， 既安全， 又经济。
如图 2并结合图 1所示， 在本实施例中， 锅炉壁上部 2a、 锅炉壁下部 2b和 锅炉壁底部 2c各自所围成的烟气通道的直径不同、 截面积不同。 锅炉壁上部 2a围成的烟气通道的直径 A小于锅炉壁下部 2b围成的烟气通道的直径 由于 锅炉壁上部 2a与锅炉壁下部 2b的围成的烟气通道的直径不同、 截面积不同， 锅炉壁上部 2a与锅炉壁下部 2b之间设有由上至下逐渐加宽的渐变过渡部分。
如图 3所示， 其图示一种锅炉壁 2的另一种实施例。 该实施例中， 锅炉壁 上部 2a围成的烟气通道的直径 A与锅炉壁下部 2b围成的烟气通道的直径 B相 等。 锅炉壁上部 2a和锅炉壁下部 2b的分界点在锅炉壁中部附近， 过渡集箱 3 设置在该位置。
上述的两种直径的锅炉都适合本发明的技术方案。 本发明大型蒸汽发生 器中， 锅炉壁上部 2a和锅炉壁下部 2b围成的烟气通道截面积可设置为相同， 也可设置为不相同。 优选的， 本发明大型蒸汽发生器中， 锅炉壁上部 2a和锅 炉壁下部 2b围成的气体通道截面积比为 0.6〜1。 . 尽管本发明的内容已经通过上述优选实施例作了详细介绍， 但应当认识 到上述的描述不应被认为是对本发明的限制。 在本领域技术人员阅读了上述 内容后， 对于本发明的多种修改和替代都将是显而易见的。 因此， 本发明的 保护范围应由所附的权利要求来限定。

Claims

权利要求
1. 一种大型蒸汽发生器， 该发生器包含支架 （1)， 架设在所述的支架 （1) 下的锅炉壁（2)和若干级受热面管束（5)， 设置在所述的受热面管束（5) 两端的集箱 （6)， 所述的锅炉壁 （2) 包含若干管束， 该管束用于组成锅 炉水冷壁的管束；
其特征在于， 从所述的锅炉壁 （2) 的管束中取出若干根， 作为悬吊 管 （4)， 该悬吊管 （4) 用于支吊集箱 （6)。
2. 如权利要求 1所述的大型蒸汽发生器， 其特征在于， 所述的悬吊管 （4) 的根数占所有所述的锅炉壁 （2) 的管束根数的 3%〜10%。
3. 如权利要求 1所述的大型蒸汽发生器， 其特征在于， 所述的锅炉壁 （2) 包含锅炉壁上部 （2a)， 连接在所述的锅炉壁上部 （2a) 下的锅炉壁下部
(2b), 以及连接在所述的锅炉壁下部 （2b) 下的锅炉壁底部 （2c)。
4. 如权利要求 3所述的大型蒸汽发生器， 其特征在于， 所述的悬吊管 （4) 到锅炉壁 （2) 的距离 L为 0.1A〜0.4A， A为所述的锅炉壁上部 （2a) 所 围成的烟气通道的直径。
5. 如权利要求 1所述的大型蒸汽发生器， 其特征在于， 本发生器还包含架设 在所述的悬吊管（4)与锅炉壁（2)之间的若干根集箱支吊梁（7)， 该集 箱支吊梁 （7) —端固定于所述的锅炉壁 （2)， 另一端固定于所述的悬吊 管 （4);
所述的集箱 （6) 吊设或支设在所述的集箱支吊梁 （7) 上。
6. 如权利要求 1所述的大型蒸汽发生器， 其特征在于， 所-述的支架 （1) 包 含若干根竖直设置的支'架立柱 （la)， 以及架设在若干根所述的支架立柱
(la) 上的支架横梁 （lb)。
7. 如权利要求 6所述的大型蒸汽发生器， 其特征在于， 所述的悬吊管 （4) 的下部与锅炉壁（2) 的侧壁固定， 所述的悬吊管 (4)的上部与支架横梁
(lb) 固定。
8. 如权利要求 7所述的大型蒸汽发生器， 其特征在于， 所述的悬吊管 （4) 与锅炉壁 （2) 连通， 或该悬吊管 （4) 封闭设置。 权利要求 3 所述的大型蒸汽发生器， 其特征在于， 所述的锅炉壁上部 (2a) 和锅炉壁下部 （2b) 各自围成的烟气通道的截面积比为 0.6〜J。
PCT/CN2011/001491 2010-09-28 2011-09-02 大型蒸汽发生器 WO2012041002A1 (zh)

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CN104296122A (zh) * 2014-11-03 2015-01-21 上海锅炉厂有限公司 变截面塔式锅炉的锅炉壁支吊系统
CN104806996B (zh) * 2015-04-03 2017-01-11 中国华能集团清洁能源技术研究院有限公司 一种适合于在锅炉炉膛内布置受热面与部件的支固结构与方法
CN110486946A (zh) * 2019-09-18 2019-11-22 浙江恒通安装工程有限公司 一种装配式锅炉系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063534A (en) * 1975-05-22 1977-12-20 Kraftwerk Union Aktiengesellschaft Coal-fired steam generator with heating surfaces above the firing or combustion chamber
CN1271824A (zh) * 1999-03-03 2000-11-01 Abb阿尔斯托姆电力(瑞士)股份有限公司 锅炉悬吊装置
JP2002130608A (ja) * 2000-10-30 2002-05-09 Ishikawajima Harima Heavy Ind Co Ltd ボイラの管寄支持管上部吊換構造
JP2004093051A (ja) * 2002-09-02 2004-03-25 Nippon Steel Corp ボイラの蒸発器構造
CN101311623A (zh) * 2007-05-21 2008-11-26 张家港海陆锅炉有限公司 高温高压自然循环干熄焦余热锅炉的强制循环悬吊管装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522157A (en) * 1982-09-30 1985-06-11 Lummus Crest Inc. Convection section assembly for process heaters
CN2473523Y (zh) * 2001-03-26 2002-01-23 张彦茹 高效节能汽化燃烧常压锅炉
JP5059357B2 (ja) * 2006-08-03 2012-10-24 株式会社日立プラントテクノロジー ボイラケージ部フロアの構築方法
CN101311621A (zh) * 2007-05-21 2008-11-26 张家港海陆锅炉有限公司 高温高压自然循环干熄焦余热锅炉的自然循环悬吊管装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063534A (en) * 1975-05-22 1977-12-20 Kraftwerk Union Aktiengesellschaft Coal-fired steam generator with heating surfaces above the firing or combustion chamber
CN1271824A (zh) * 1999-03-03 2000-11-01 Abb阿尔斯托姆电力(瑞士)股份有限公司 锅炉悬吊装置
JP2002130608A (ja) * 2000-10-30 2002-05-09 Ishikawajima Harima Heavy Ind Co Ltd ボイラの管寄支持管上部吊換構造
JP2004093051A (ja) * 2002-09-02 2004-03-25 Nippon Steel Corp ボイラの蒸発器構造
CN101311623A (zh) * 2007-05-21 2008-11-26 张家港海陆锅炉有限公司 高温高压自然循环干熄焦余热锅炉的强制循环悬吊管装置

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