JPWO2021149196A5 - - Google Patents
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- JPWO2021149196A5 JPWO2021149196A5 JP2021572197A JP2021572197A JPWO2021149196A5 JP WO2021149196 A5 JPWO2021149196 A5 JP WO2021149196A5 JP 2021572197 A JP2021572197 A JP 2021572197A JP 2021572197 A JP2021572197 A JP 2021572197A JP WO2021149196 A5 JPWO2021149196 A5 JP WO2021149196A5
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- JP
- Japan
- Prior art keywords
- heat transfer
- furnace
- transfer panel
- tube
- panel structure
- 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.)
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- 230000002093 peripheral effect Effects 0.000 claims description 22
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims 3
- 230000000694 effects Effects 0.000 description 2
Description
【０００２】
いう実情がある。
［０００５］
本発明は、このような実情に鑑みてなされたもので、その目的は、ボイラの伝熱管に生じる入口側直管と出口側直管の熱伸び差を吸収することにある。
課題を解決するための手段
［０００６］
上記目的を達成するために、本発明は、特許請求の範囲に記載の構成を有する。その一例を挙げるならば、本発明はボイラの火炉に備えられる伝熱パネル構造であって、前記火炉は、鉛直方向を軸方向とする筒状に形成され、前記筒状の内部に燃焼空間を形成し、前記燃焼空間には、前記火炉の天井壁から前記火炉の下部に向かって伝熱パネルが吊り下げられ、前記伝熱パネルは、一端が前記火炉外に設けられた入口管寄せに接続され他端が前記火炉外に設けられた出口管寄せに接続されている伝熱管を複数含む伝熱管群として形成され、前記複数の伝熱管のそれぞれは、前記一端から前記火炉の下部に向かう入口直管部と、前記他端から前記火炉の下部に向かう出口直管部と、前記入口直管部の下端部および前記出口直管部の下端部を連結する湾曲部と、を含み、前記複数の伝熱管は、湾曲部の曲率が最も大きい最内周管と、前記最内周管の湾曲部の曲率よりも小さい曲率を有する湾曲部を含んで形成され、前記最内周管の外周に沿って配置される第１外周管と、を含み、前記最内周管の前記出口直管部に、前記最内周管の熱伸びを吸収するための冗長部が形成され、前記冗長部が形成された前記第１外周管と、当該第１外周管よりも外側に配置され、前記冗長部が形成されていない最外周管とを含む、ことを特徴とする。
発明の効果
［０００７］
本発明によれば、ボイラの伝熱管に生じる入口側直管と出口側直管の熱伸び差を吸収することができる。なお、上記した以外の課題、構成および効果は、以下の実施形態の説明により明らかにされる。
図面の簡単な説明
［０００８］
［図１］ボイラの構成の一例を示す斜視図
［図２］ボイラの構成の一例を示す側面図
［図３］伝熱パネルの平面図[0002]
There is a fact.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and its object is to absorb the difference in thermal elongation between the inlet-side straight tube and the outlet-side straight tube that occurs in the heat transfer tubes of a boiler.
Means for solving the problem [0006]
In order to achieve the above object, the present invention has the configurations described in the claims. To give an example, the present invention is a heat transfer panel structure provided in a boiler furnace, wherein the furnace is formed in a tubular shape with an axial direction in the vertical direction, and a combustion space is provided inside the tubular shape. A heat transfer panel is suspended in the combustion space from the ceiling wall of the furnace toward the lower part of the furnace, and one end of the heat transfer panel is connected to an inlet header provided outside the furnace. and the other end is connected to an outlet header provided outside the furnace, and each of the plurality of heat transfer tubes is formed as an inlet directed from the one end to the lower part of the furnace. the plurality of is formed to include an innermost peripheral tube having the largest curvature of the curved portion and a curved portion having a smaller curvature than the curvature of the curved portion of the innermost peripheral tube. a redundant portion for absorbing thermal elongation of the innermost peripheral pipe is formed in the outlet straight pipe portion of the innermost peripheral pipe, and the redundant portion comprises It is characterized by including the formed first outer peripheral tube, and an outermost peripheral tube arranged outside the first outer peripheral tube and in which the redundant portion is not formed.
Effects of the invention [0007]
According to the present invention, it is possible to absorb the difference in thermal elongation between the inlet-side straight pipe and the outlet-side straight pipe that occurs in the heat transfer tubes of a boiler. Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.
BRIEF DESCRIPTION OF THE FIGURES [0008]
[Fig. 1] Perspective view showing an example of a configuration of a boiler [Fig. 2] Side view showing an example of a configuration of a boiler [Fig. 3] Plan view of a heat transfer panel
Claims (5)
前記火炉は、鉛直方向を軸方向とする筒状に形成され、前記筒状の内部に燃焼空間を形成し、
前記燃焼空間には、前記火炉の天井壁から前記火炉の下部に向かって伝熱パネルが吊り下げられ、
前記伝熱パネルは、一端が前記火炉外に設けられた入口管寄せに接続され他端が前記火炉外に設けられた出口管寄せに接続されている伝熱管を複数含む伝熱管群として形成され、
前記複数の伝熱管のそれぞれは、
前記一端から前記火炉の下部に向かう入口直管部と、
前記他端から前記火炉の下部に向かう出口直管部と、
前記入口直管部の下端部および前記出口直管部の下端部を連結する湾曲部と、を含み、
前記複数の伝熱管は、
湾曲部の曲率が最も大きい最内周管と、
前記最内周管の湾曲部の曲率よりも小さい曲率を有する湾曲部を含んで形成され、前記最内周管の外周に沿って配置される第１外周管と、を含み、
前記最内周管の前記出口直管部に、前記最内周管の熱伸びを吸収するための冗長部が形成され、
前記冗長部が形成された前記第１外周管と、当該第１外周管よりも外側に配置され、前記冗長部が形成されていない最外周管とを含む、
ことを特徴とするボイラの伝熱パネル構造。A heat transfer panel structure provided in a boiler furnace,
The furnace is formed in a cylindrical shape with an axial direction in the vertical direction, and a combustion space is formed inside the cylindrical shape,
A heat transfer panel is suspended in the combustion space from the ceiling wall of the furnace toward the bottom of the furnace,
The heat transfer panel is formed as a heat transfer tube group including a plurality of heat transfer tubes having one end connected to an inlet header provided outside the furnace and the other end connected to an outlet header provided outside the furnace. ,
Each of the plurality of heat transfer tubes,
an inlet straight pipe portion extending from the one end to the lower portion of the furnace;
an outlet straight pipe portion directed from the other end to the lower portion of the furnace;
a curved portion connecting the lower end portion of the straight inlet pipe portion and the lower end portion of the straight outlet pipe portion;
The plurality of heat transfer tubes are
an innermost peripheral tube having the largest curvature of the curved portion;
a first outer tube formed including a curved portion having a curvature smaller than the curvature of the curved portion of the innermost peripheral tube and arranged along the outer periphery of the innermost peripheral tube;
A redundant portion for absorbing thermal expansion of the innermost peripheral tube is formed in the outlet straight pipe portion of the innermost peripheral tube,
including the first outer peripheral tube in which the redundant portion is formed, and an outermost peripheral tube that is arranged outside the first outer peripheral tube and in which the redundant portion is not formed,
A boiler heat transfer panel structure characterized by:
前記伝熱パネルは、前記第１外周管および前記第１外周管の湾曲部の曲率よりも小さい湾曲部を含んで形成され、前記第１外周管の外周に沿って配置される第２外周管を含む少なくとも２つ以上の外周管を含んで形成され、
複数の外周管のうち、前記湾曲部の曲率が前記外周管の配管直径の１倍以上５倍以下に相当する外周管には、前記冗長部が形成される、
ことを特徴とするボイラの伝熱パネル構造。A heat transfer panel structure for a boiler according to claim 1,
The heat transfer panel is formed to include the first outer tube and a curved portion having a smaller curvature than the curved portions of the first outer tube, and a second outer tube arranged along the outer periphery of the first outer tube. formed including at least two or more peripheral tubes comprising
Among the plurality of peripheral pipes, the redundant portion is formed in the peripheral pipe in which the curvature of the curved portion corresponds to 1 to 5 times the piping diameter of the peripheral pipe.
A boiler heat transfer panel structure characterized by:
前記第１外周管の出口直管部に前記冗長部が形成される、
ことを特徴とするボイラの伝熱パネル構造。A heat transfer panel structure for a boiler according to claim 1,
The redundant portion is formed in the outlet straight pipe portion of the first outer peripheral pipe,
A boiler heat transfer panel structure characterized by:
前記冗長部は、前記出口直管部の軸方向とは異なる軸方向を有する立ち上がり部と、当該立ち上がり部から連続し、前記最内周管および前記第１外周管の配列面と平行に延伸する冗長直管部と、当該冗長直管部から前記出口管寄せに連結する出口管寄せ連結部と、を含んで構成される、
ことを特徴とするボイラの伝熱パネル構造。In the boiler heat transfer panel structure according to claim 1,
The redundant portion includes a rising portion having an axial direction different from the axial direction of the outlet straight pipe portion, and a rising portion continuous from the rising portion and extending in parallel with the arrangement plane of the innermost peripheral pipe and the first outer peripheral pipe. comprising a redundant straight pipe section and an outlet header connection section that connects the redundant straight pipe section to the outlet header,
A boiler heat transfer panel structure characterized by:
前記冗長部は、前記火炉の天井壁よりも上側であって、前記火炉の外部に形成される、
ことを特徴とするボイラの伝熱パネル構造。In the boiler heat transfer panel structure according to claim 1,
The redundant portion is formed above the ceiling wall of the furnace and outside the furnace,
A boiler heat transfer panel structure characterized by:
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2020/002152 WO2021149196A1 (en) | 2020-01-22 | 2020-01-22 | Heat transfer panel structure for boiler |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPWO2021149196A1 JPWO2021149196A1 (en) | 2021-07-29 |
| JPWO2021149196A5 true JPWO2021149196A5 (en) | 2022-10-18 |
| JP7316388B2 JP7316388B2 (en) | 2023-07-27 |
Family
ID=76993206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2021572197A Active JP7316388B2 (en) | 2020-01-22 | 2020-01-22 | Boiler heat transfer panel structure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7316388B2 (en) |
| WO (1) | WO2021149196A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61135112U (en) * | 1985-02-01 | 1986-08-22 | ||
| JPS6330705U (en) * | 1986-08-15 | 1988-02-29 | ||
| JP3190939B2 (en) * | 1992-11-16 | 2001-07-23 | バブコック日立株式会社 | Steam generator |
| JPH11218302A (en) * | 1998-02-02 | 1999-08-10 | Babcock Hitachi Kk | Seal structure of furnace wall through part |
| JP2005156121A (en) * | 2003-11-28 | 2005-06-16 | Babcock Hitachi Kk | Suspended heat transfer pipe group and boiler apparatus equipped with the same |
| CN106594698A (en) * | 2016-12-30 | 2017-04-26 | 江苏东九重工股份有限公司 | Biomass direct-fired boiler |
| JP2019203661A (en) * | 2018-05-24 | 2019-11-28 | 三菱日立パワーシステムズ株式会社 | Boiler device and superheater |
-
2020
- 2020-01-22 JP JP2021572197A patent/JP7316388B2/en active Active
- 2020-01-22 WO PCT/JP2020/002152 patent/WO2021149196A1/en active Application Filing
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