JPH05641Y2 - - Google Patents
Info
- Publication number
- JPH05641Y2 JPH05641Y2 JP1987094708U JP9470887U JPH05641Y2 JP H05641 Y2 JPH05641 Y2 JP H05641Y2 JP 1987094708 U JP1987094708 U JP 1987094708U JP 9470887 U JP9470887 U JP 9470887U JP H05641 Y2 JPH05641 Y2 JP H05641Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- fluidized bed
- heat exchanger
- support
- fluidized
- 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000005243 fluidization Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 5
- 230000007774 longterm Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案は、流動床ボイラ等の流動層部に配置
される伝熱管の支持構造に関するものである。[Detailed Description of the Invention] Industrial Application Field This invention relates to a support structure for heat exchanger tubes arranged in a fluidized bed section of a fluidized bed boiler or the like.
従来の技術
流動床ボイラ等の流動層部に水平に配置される
伝熱管は第3図に示すように、伝熱管2の一端が
炉壁7に固定支持され、ベンド部9近くの他端が
流動層1内において耐摩耗性の材料によつて支持
18されていた。BACKGROUND TECHNOLOGY As shown in FIG. 3, in a heat transfer tube arranged horizontally in a fluidized bed section of a fluidized bed boiler, one end of the heat transfer tube 2 is fixedly supported on a furnace wall 7, and the other end near a bend section 9 is fixedly supported. It was supported within the fluidized bed 1 by a wear-resistant material.
また、前記ベンド部9は他の水平部に比して摩
耗が激しいため耐摩耗性材料によるプロテクター
19などが施されていた。 Furthermore, since the bend portion 9 is subject to more wear than other horizontal portions, a protector 19 made of a wear-resistant material is provided thereon.
考案が解決しようとする問題点
しかしながら、前記流動層内に伝熱管の支持
は、伝熱管自身の熱膨張のためその支持が確実に
行われないばかりでなく支持構造体が流動媒体に
よつて摩耗するため長期にわたる支持が困難であ
る。Problems to be Solved by the Invention However, supporting the heat exchanger tubes in the fluidized bed is not only not supported reliably due to thermal expansion of the heat exchanger tubes themselves, but also because the support structure is abraded by the fluidized medium. Therefore, long-term support is difficult.
また、前記ベンド部には耐摩耗性材料によるプ
ロテクターなどが施されていたため経済的に不都
合が多かつた。 Furthermore, since the bend portion was provided with a protector made of a wear-resistant material, there were many economical disadvantages.
問題点を解決するための手段
この考案は、前記伝熱管の熱膨張側の支持を摩
耗の激しい流動層内に設置することなく伸縮を充
分に吸収する構造とし、且つベンド部を流動化の
及び難い炉壁の凹部に設置して前記の問題点を解
決したものであつて、具体的には、
流動層低部に配置した流動ノズルから流動化空
気を噴出して流動媒体を流動化する流動層部に配
置される伝熱管において、該伝熱管のベンド部の
先端に支持用金物を取り付け、該金物をケーシン
グに固定された支持管内に挿入して伸縮自在に支
持し、該支持管の他端にクリーニング用の空気供
給管を取り付け、前記ベンド部を炉壁の凹部に設
置した流動層部に配置される伝熱管、
である。Means for Solving the Problems This invention has a structure that sufficiently absorbs expansion and contraction without installing the support on the thermal expansion side of the heat exchanger tube in a fluidized bed that is subject to severe wear, and also has a structure that sufficiently absorbs expansion and contraction in the bend portion. The above-mentioned problem was solved by installing it in a difficult-to-reach recess in the furnace wall.Specifically, the fluidizing system fluidizes the fluidized medium by ejecting fluidizing air from a fluidizing nozzle located at the bottom of the fluidized bed. In the heat exchanger tube arranged in the layer section, a support metal fitting is attached to the tip of the bend part of the heat exchanger tube, and the metal fitting is inserted into the support tube fixed to the casing to be supported in a flexible manner, and the other parts of the support tube are A heat exchanger tube having a cleaning air supply pipe attached to its end and disposed in a fluidized bed section with the bend section installed in a recessed section of a furnace wall.
作 用
流動ノズルからの流動化空気の噴出によつて流
動層内の流動媒体が流動すると共に該層内の燃料
が燃焼する。Effect: The fluidized medium in the fluidized bed flows by the jet of fluidized air from the fluidized nozzle, and the fuel in the bed is combusted.
この燃焼による高熱は伝熱管に伝達されて、該
管内の流体を加熱する。 The high heat from this combustion is transferred to the heat transfer tubes and heats the fluid within the tubes.
一端が炉壁に固定支持された前記伝熱管の熱膨
張側は、ベンド部の先端が支持用金具を介して支
持管に伸縮自在に支持されているから、伝熱管の
熱膨張は制限なく行われる。 On the thermal expansion side of the heat exchanger tube, one end of which is fixedly supported on the furnace wall, the tip of the bend portion is telescopically supported by the support tube via a support fitting, so the thermal expansion of the heat exchanger tube can be performed without restriction. be exposed.
また、炉壁に凹部を形成して該凹部内にベンド
部及び支持用金具を設置したので、ベンド部及び
支持用金具に対する流動媒体の流動による影響は
非常に少ない。更に、長時間の使用により伝熱管
が汚れたときには、前記支持管を介して炉内にク
リーニング用の空気を送り込むことにより伝熱管
の清掃ができる。 Further, since a recess is formed in the furnace wall and the bend portion and supporting metal fittings are installed within the recess, the effect of the flow of the fluid medium on the bend portion and the supporting metal fittings is very small. Further, when the heat exchanger tube becomes dirty due to long-term use, the heat exchanger tube can be cleaned by sending cleaning air into the furnace through the support tube.
実施例
第1図及び第2図を参照してこの考案の一実施
例について説明する。Embodiment An embodiment of this invention will be described with reference to FIGS. 1 and 2.
図において、1は流動層、2は伝熱管、3は風
箱、4は流動ノズル、5は流動用空気供給管であ
る。 In the figure, 1 is a fluidized bed, 2 is a heat exchanger tube, 3 is a wind box, 4 is a fluidizing nozzle, and 5 is a fluidizing air supply pipe.
流動用空気供給管5からの空気は風箱3に取り
付けられた流動ノズル4より噴出し、流動媒体を
流動状態にして流動層1を形成する。 Air from the fluidizing air supply pipe 5 is ejected from a fluidizing nozzle 4 attached to the wind box 3, and the fluidized medium is brought into a fluidized state to form a fluidized bed 1.
この流動層1内には伝熱管2が設置されてお
り、該伝熱管2のヘツダー6側は炉壁7のケーシ
ング8に固定されている。 A heat transfer tube 2 is installed in the fluidized bed 1, and the header 6 side of the heat transfer tube 2 is fixed to a casing 8 of a furnace wall 7.
この伝熱管2の反固定方向の伝熱管2の支持
は、伝熱管のベンド部9の先端に溶接された支持
用金具10が炉壁11のケーシング12に固定さ
れた支持管13内に挿入されることによつて行わ
れる。 The support of the heat exchanger tube 2 in the direction opposite to that of the heat exchanger tube 2 is achieved by inserting a support fitting 10 welded to the tip of the bend portion 9 of the heat exchanger tube into the support tube 13 fixed to the casing 12 of the furnace wall 11. This is done by
そして、この支持管13は前記支持用金物10
を伸縮自在に受けている。 This support tube 13 is connected to the support hardware 10.
It is flexible and flexible.
この支持管13の他端は管板14によつて塞が
れており、この管板14にはクリーニング用の空
気供給管15が取り付けられていて、この管15
はプラグ16で通常は閉塞されている。 The other end of this support tube 13 is closed by a tube sheet 14, and an air supply tube 15 for cleaning is attached to this tube sheet 14.
is normally closed by a plug 16.
また、支持管13の炉内側は耐火材からなる炉
壁11で被われており、該支持管13が流動媒体
などによる摩耗と熱による焼損されるのを防止し
ている。 Further, the inside of the support tube 13 is covered with a furnace wall 11 made of a refractory material to prevent the support tube 13 from being abraded by the fluidized medium and burned out by heat.
この炉壁11には前記ベンド部9及び支持用金
物10が設置される箇所において凹部17が形成
されており、該凹部17に前記支持管13が開口
している。 A recess 17 is formed in the furnace wall 11 at a location where the bend portion 9 and the supporting hardware 10 are installed, and the support tube 13 opens into the recess 17.
以上の如く、流動層1内の流動媒体による加熱
によつて伝熱管2は熱膨張をするが、この膨張は
支持用金物10が支持管13内を伸縮することに
よつて救済され、該支持用金物10と支持管13
によつて伝熱管2は無理なく支持される。 As described above, the heat transfer tube 2 undergoes thermal expansion due to heating by the fluidized medium in the fluidized bed 1, but this expansion is relieved by the support metal fittings 10 expanding and contracting within the support tube 13. Hardware 10 and support tube 13
The heat exchanger tube 2 is supported easily by this.
その際、ベンド部9及び支持用金物10は、炉
壁11に形成した凹部17内に設置されているの
で、ベンド部及び支持用金物に対する流動媒体の
流動による影響は非常に少ない。更に長時間の使
用により伝熱管が汚れたときには、前記支持管を
介して炉内にクリーニング用の空気を送り込むこ
とにより伝熱管は清掃できる。 At this time, since the bend part 9 and the supporting hardware 10 are installed in the recess 17 formed in the furnace wall 11, the influence of the flow of the fluid medium on the bend part and the supporting hardware is very small. Further, when the heat exchanger tube becomes dirty due to long-term use, the heat exchanger tube can be cleaned by sending cleaning air into the furnace through the support tube.
考案の効果
この考案によると、伝熱管のベンド部の先端に
支持用金物を取り付け、該金物をケーシングに固
定された支持管内に挿入して伸縮自在に支持した
ので、伝熱管の支持は該伝熱管の熱膨張等による
伸縮に影響されることなく確実に行われ、しか
も、前記ベンド部を炉壁の凹部に設置したので、
ベンド部及び支持用金物が流動媒体の流動によつ
て摩耗することなく、従つて支持用金物も普通の
材料が使用でき、安価であり取り替えの必要も少
なくなり、またベンド部も特殊な材料によるプロ
テクターの必要がなく、経済的なものとなる。更
に、長時間の使用により伝熱管が汚れたときに
は、前記支持管を介して炉内にクリーニング用の
空気を送り込むことにより伝熱管は清掃され、該
伝熱管の清掃が特別の独立した装置を用いること
なく簡単にできる。Effects of the invention According to this invention, a support metal fitting is attached to the tip of the bend portion of the heat transfer tube, and the metal fitting is inserted into the support tube fixed to the casing to support the heat transfer tube in a flexible manner. This can be done reliably without being affected by expansion and contraction due to thermal expansion of the heat tube, and since the bend part is installed in a recess in the furnace wall,
The bend part and the supporting metal fittings do not wear out due to the flow of the fluid medium, and therefore the supporting metal fittings can be made of ordinary materials, which is inexpensive and requires less replacement. There is no need for a protector, making it economical. Furthermore, when the heat exchanger tube becomes dirty due to long-term use, the heat exchanger tube is cleaned by sending cleaning air into the furnace through the support tube, and a special independent device is used to clean the heat exchanger tube. You can easily do it without any hassle.
第1図はこの考案に係る実施例の構成図、第2
図はその要部詳細図、第3図は従来例の説明図を
示す。
1……流動層、2……伝熱管、4……流動ノズ
ル、9……ベンド部、10……支持用金物、11
……炉壁、12……ケーシング、13……支持
管、15……空気供給管、17……凹部。
Figure 1 is a configuration diagram of an embodiment of this invention;
The figure shows a detailed view of the main part, and FIG. 3 shows an explanatory diagram of a conventional example. DESCRIPTION OF SYMBOLS 1... Fluidized bed, 2... Heat exchanger tube, 4... Fluid nozzle, 9... Bend part, 10... Support hardware, 11
... Furnace wall, 12 ... Casing, 13 ... Support pipe, 15 ... Air supply pipe, 17 ... Recess.
Claims (1)
気を噴出して流動媒体を流動化する流動層部に配
置される伝熱管において、該伝熱管のベント部の
先端に支持用金物を取り付け、該金物をケーシン
グに固定された支持管内に挿入して伸縮自在に支
持し、該支持管の他端にクリーニング用の空気供
給管を取り付け、前記ベント部を炉壁の凹部に配
置したことを特徴とする流動層部に配置される伝
熱管。 In a heat transfer tube disposed in a fluidized bed section that fluidizes a fluidized medium by ejecting fluidizing air from a fluidization nozzle disposed at a lower portion of the fluidized bed, a supporting hardware is attached to the tip of a vent portion of the heat transfer tube, The metal fittings are inserted into a support tube fixed to the casing and supported so as to be expandable and retractable, an air supply tube for cleaning is attached to the other end of the support tube, and the vent part is arranged in a recess in the furnace wall. heat exchanger tubes placed in the fluidized bed section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987094708U JPH05641Y2 (en) | 1987-06-22 | 1987-06-22 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987094708U JPH05641Y2 (en) | 1987-06-22 | 1987-06-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS641201U JPS641201U (en) | 1989-01-06 |
JPH05641Y2 true JPH05641Y2 (en) | 1993-01-11 |
Family
ID=30958441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987094708U Expired - Lifetime JPH05641Y2 (en) | 1987-06-22 | 1987-06-22 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH05641Y2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5380039A (en) * | 1976-12-23 | 1978-07-15 | Dorr Oliver Inc | Process heater of fluid bed type |
JPS582A (en) * | 1981-06-23 | 1983-01-05 | 株式会社東芝 | Waste heat recovering boiler |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6039665Y2 (en) * | 1983-01-18 | 1985-11-28 | 川崎重工業株式会社 | waste heat boiler |
-
1987
- 1987-06-22 JP JP1987094708U patent/JPH05641Y2/ja not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5380039A (en) * | 1976-12-23 | 1978-07-15 | Dorr Oliver Inc | Process heater of fluid bed type |
JPS582A (en) * | 1981-06-23 | 1983-01-05 | 株式会社東芝 | Waste heat recovering boiler |
Also Published As
Publication number | Publication date |
---|---|
JPS641201U (en) | 1989-01-06 |
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