JP2000074304A - Sound attenuating structure for multitubular once- through boiler combustion sound - Google Patents
Sound attenuating structure for multitubular once- through boiler combustion soundInfo
- Publication number
- JP2000074304A JP2000074304A JP10262345A JP26234598A JP2000074304A JP 2000074304 A JP2000074304 A JP 2000074304A JP 10262345 A JP10262345 A JP 10262345A JP 26234598 A JP26234598 A JP 26234598A JP 2000074304 A JP2000074304 A JP 2000074304A
- Authority
- JP
- Japan
- Prior art keywords
- resonance chamber
- header
- boiler
- combustion
- fins
- 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.)
- Pending
Links
Landscapes
- Details Of Fluid Heaters (AREA)
- Chimneys And Flues (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、多管式貫流ボイラの燃
焼音を消音する構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for suppressing the combustion noise of a multi-tube once-through boiler.
【０００２】[0002]
【従来の技術】多管式貫流ボイラの燃焼に伴い発生する
燃焼音を消音する方法としては、燃焼ガスを排気する排
気筒に消音器を取り付ける方法、又は、穴を通して外部
と連結する空洞をもつ共鳴器により消音する方法があ
り、共鳴器を使用したものとしては実開昭６０−１３９
１４４号のような単純な形状の箱形構造等の燃焼室を有
する燃焼器に、ひだと孔を有する共鳴器を設ける方法等
があった。2. Description of the Related Art As a method of silencing a combustion noise generated by the combustion of a multi-tube once-through boiler, a method of attaching a silencer to an exhaust pipe for exhausting combustion gas or a method of connecting a cavity connected to the outside through a hole is provided. There is a method of silencing using a resonator.
There has been a method of providing a combustor having a combustion chamber having a simple box-shaped structure such as No. 144 with a resonator having pleats and holes.
【０００３】[0003]
【発明が解決しようとする課題】しかし、排気筒に消音
器を設ける構造は、消音器の取付によるボイラ設置スペ
ースの増加並びに取付費用及び消音器本体費用等のコス
トアップの問題があり、又、実開昭６０−１３９１４４
号で開示されている燃焼室にひだと孔を有する共鳴器を
設けることは、多管式貫流ボイラにおいては燃焼室が熱
吸収用水管で構成されているため、燃焼室にひだと孔を
有する共鳴器を設けると、水管への熱伝達が阻害されボ
イラ効率が低下する、及び燃焼室熱負荷が高いため共鳴
器が高温になり焼損する等の問題があった。However, the structure in which the muffler is provided in the exhaust stack has the problems of increasing the boiler installation space by mounting the muffler, and increasing the installation cost and the muffler body cost. 60-139144
In the multi-tube once-through boiler, since the combustion chamber is constituted by a heat absorption water pipe, the combustion chamber has a pleat and a hole. When the resonator is provided, there are problems that heat transfer to the water pipe is hindered and the boiler efficiency is reduced, and that the resonator becomes hot due to a high heat load in the combustion chamber and burns out.
【０００４】本発明はかかる事情に鑑み、多管式貫流ボ
イラにおいて、ボイラ設置スペースを増加させることな
く、水管の熱吸収を妨げることなく、低コストでボイラ
燃焼音を消音することができる構造を提供することを目
的とする。In view of such circumstances, the present invention provides a multi-tube once-through boiler having a structure capable of reducing the boiler combustion noise at a low cost without increasing the boiler installation space, hindering the heat absorption of the water pipe. The purpose is to provide.
【０００５】[0005]
【課題を解決するための手段】請求項１記載の構造は、
上部に上部管寄せ、下部に下部管寄せを設け、上下管寄
せ間を多数の垂直な水管で連結した多管式貫流ボイラに
おいて、任意の隣接する水管を２枚のヒレにより連結
し、水管とヒレにより作られた空間の上部及び下部の開
放された部分をメクラ板若しくは管寄せ又は耐火材で塞
ぐことにより共鳴室を設け、共鳴室には燃焼ガスが共鳴
室に通じる孔を設ける。請求項２記載の構造は、燃焼ガ
ス内に含まれた煤塵等が共鳴室に蓄積した場合に、容易
に排出できるよう、共鳴室下部に煤塵等の排出孔を設け
る。請求項３記載の構造は、請求項１記載の共鳴室内に
グラスファイバー等の緩衝部材を入れたものである。The structure according to claim 1 is
In a multi-tube type once-through boiler in which an upper header is provided at the upper part and a lower header is provided at the lower part and the upper and lower headers are connected by a number of vertical water pipes, any adjacent water pipes are connected by two fins, and The upper and lower open portions of the space created by the fins are closed with a metal plate or a header or a refractory material to provide a resonance chamber, and the resonance chamber is provided with holes through which combustion gas passes to the resonance chamber. In the structure according to the second aspect, a discharge hole for dust and the like is provided at a lower portion of the resonance chamber so that when dust or the like contained in the combustion gas accumulates in the resonance chamber, it can be easily discharged. According to a third aspect of the present invention, a buffer member such as glass fiber is placed in the resonance chamber of the first aspect.
【０００６】[0006]
【発明の実施の形態】つぎに、「請求項１」の発明の一
実施例を図面に基づき説明する。図１は水管群が環状に
形成された多管式貫流ボイラに、本発明を実施した縦断
面図、図２は図１のＡ−Ａ断面図、図３は図１の缶体内
部よりＢ方向に本発明実施例を表した図面である。図１
において、缶体の上部には環状の上部管寄せ１、下部に
も環状の下部管寄せ２を設け、上下管寄せ間を環状に並
んだ多数の垂直な水管３で連結し、環状の水管群の隣接
する水管間を、燃焼ガスが通過する水管間下部の通路部
を除き、２枚のヒレ４、４’により連結する。水管間の
ヒレ４、４’の下部の開放部は、メクラ板５で塞ぐこと
で、上部管寄せ１、水管３、メクラ板５及びヒレ４、
４’により、共鳴室１１を構成する。ヒレ４には、燃焼
ガスが内部に通過できる孔を１ケ又は複数個開けてお
く。また、上部管寄せ及び下部管寄せは、耐火材６、７
で覆ってある。ここで、バーナ８を燃焼させると、燃焼
室９内で、高温の燃焼ガスが発生する。燃焼ガスが水管
群に接触すること等で、水管群が熱を吸収し、水管内の
缶水（図示せず）を加熱し、蒸気を発生させる。燃焼ガ
スは、水管間とヒレ下部の空間より、環状に形成された
燃焼室外へ通過し、外側より、再度、水管群を加熱した
後、排気筒１０より排気される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a longitudinal sectional view of a multi-tube once-through boiler in which a water tube group is formed in an annular shape, and FIG. 2 is a sectional view taken along line AA of FIG. 1 and FIG. 3 is a drawing showing an embodiment of the present invention in a direction. FIG.
, An annular upper header 1 is provided at the upper part of the can body, and an annular lower header 2 is also provided at the lower part, and the upper and lower headers are connected by a number of vertical water pipes 3 arranged in a ring, thereby forming an annular water pipe group. Are connected by two fins 4, 4 'except for a lower passage between the water pipes through which the combustion gas passes. The lower open portions of the fins 4 and 4 ′ between the water pipes are closed with a metal plate 5 so that the upper header 1, the water pipe 3, the metal plate 5 and the fin 4,
4 'constitutes the resonance chamber 11. The fin 4 has one or more holes through which the combustion gas can pass. The upper header and the lower header are made of refractory materials 6 and 7.
It is covered with. Here, when the burner 8 is burned, high-temperature combustion gas is generated in the combustion chamber 9. When the combustion gas comes into contact with the water tube group, the water tube group absorbs heat, heats the can water (not shown) in the water tube, and generates steam. The combustion gas passes through the space between the water pipes and the space below the fins to the outside of the annularly formed combustion chamber, heats the water pipe group again from the outside, and is exhausted from the exhaust pipe 10.
【０００７】本構成により、燃焼により発生した燃焼音
（音波）は、ヒレ４に開けられた孔を通じ、共鳴室１１
へ入射することによりエネルギーが消耗され、燃焼音が
消音される。また、孔の数又は大きさを変えることで、
消音できる燃焼音（音波）の周波数を変化させることが
できる。With this configuration, the combustion noise (sound wave) generated by the combustion passes through the hole formed in the fin 4 and passes through the resonance chamber 11.
The energy is consumed by the incident light, and the combustion noise is muted. Also, by changing the number or size of the holes,
The frequency of the combustion sound (sound wave) that can be silenced can be changed.
【０００８】さらに、共鳴室の側壁であるヒレ４、４’
が水管に対する熱吸収用フィンとして作用し、水管への
熱伝達を促進し、水管の熱吸収率が向上し、ボイラ効率
が良くなる。図１において、燃焼室９内で発生した高温
の燃焼ガスは、最初に水管群の燃焼室側及び水管間のヒ
レ４を加熱する。ここで従来例である図５又は図６のよ
うにヒレ４のみの場合は、燃焼ガスは燃焼室側から加熱
されない水管群の外側は加熱するが、ヒレ４は燃焼室側
の高温燃焼ガスで加熱されているため、新たに外側の低
温燃焼ガスで加熱がほとんど行われないのに対し、本発
明では、燃焼室内側を加熱した燃焼ガスは、つづいて、
水管下部の空間を通過し、燃焼室側から加熱されない水
管群の外側及びヒレ４’を加熱するため、水管の熱吸収
率をさらに向上させることができる。Further, fins 4 and 4 'which are side walls of the resonance chamber.
Acts as a heat absorbing fin for the water pipe, promotes heat transfer to the water pipe, improves the heat absorption rate of the water pipe, and improves the boiler efficiency. In FIG. 1, the high-temperature combustion gas generated in the combustion chamber 9 first heats the fins 4 between the water pipes and the combustion chamber side of the water pipe group. Here, in the case of only the fins 4 as shown in FIG. 5 or FIG. 6 which is a conventional example, the combustion gas is heated from the combustion chamber side to the outside of the water pipe group which is not heated. Because it is heated, the heating is hardly newly performed with the outer low-temperature combustion gas, whereas in the present invention, the combustion gas that has heated the inside of the combustion chamber continues,
Since the outside of the water pipe group and the fins 4 ′ that pass through the space below the water pipe and are not heated from the combustion chamber side are heated, the heat absorption rate of the water pipe can be further improved.
【０００９】追加するヒレは、従来、水管間に設けられ
ていたヒレと同形状の部材を追加することで製作できる
ため、排気筒に取り付ける消音器等に比べ、低コストで
製作できる。The fin to be added can be manufactured by adding a member having the same shape as that of the fin conventionally provided between the water pipes, so that the fin can be manufactured at a lower cost than a silencer attached to an exhaust pipe.
【００１０】また、共鳴器自体も、ヒレから水管そして
水管内缶水への熱伝達により、ヒレの温度が低下し、共
鳴室を構成しているヒレ４、４’（共鳴室）の異常過熱
が防止され、焼損する恐れもない。[0010] The temperature of the fins is also reduced by heat transfer from the fins to the water pipe and the water in the water pipe, and the fins 4, 4 '(resonance chamber) constituting the resonance chamber are overheated. Is prevented and there is no risk of burning.
【００１１】本発明の他の実施例である図４は、水管群
が角型に形成された多管式貫流ボイラに本発明を実施し
た横断面図である。上部に上部管寄せ、下部に下部管寄
せを設け、上下管寄せ間を多数の垂直な水管３で連結
し、これら水管群に対して、交差方向に燃焼ガスを流通
させる多管式貫流ボイラにおいて、任意の隣接する水管
を２枚のヒレ４、４’により連結し、水管３とヒレ４、
４’により作られた空間の上部及び下部の開放された部
分をメクラ板若しくは管寄せ又は耐火材で塞ぐことによ
り共鳴室を設け、共鳴室には燃焼ガスが共鳴室に通じる
孔を設けている。ここで共鳴室を設ける水管は、側面で
もよいし、燃焼室内部の任意の水管でもよい。本構成に
より、燃焼により発生した燃焼音を共鳴室１１で消音す
ることができ、低騒音化が図れる。FIG. 4, which is another embodiment of the present invention, is a cross-sectional view in which the present invention is applied to a multi-tube once-through boiler in which water tubes are formed in a square shape. In a multi-tube type once-through boiler in which an upper header is provided at the upper part and a lower header is provided at the lower part, and the upper and lower headers are connected by a number of vertical water pipes 3 and the combustion gas is circulated in a cross direction to the water pipe groups. , Any adjacent water pipes are connected by two fins 4, 4 ′, and water pipe 3 and fins 4,
A resonance chamber is provided by closing the open upper and lower portions of the space created by 4 'with a metal plate, a header, or a refractory material. . Here, the water pipe in which the resonance chamber is provided may be a side face or an arbitrary water pipe inside the combustion chamber. With this configuration, the combustion noise generated by the combustion can be silenced in the resonance chamber 11 and the noise can be reduced.
【００１２】「請求項２」の発明は、前述の共鳴室下部
に、共鳴室内に蓄積される煤塵等の排出孔を設けたもの
である（図示せず）。共鳴室への通過孔若しくは共鳴室
内部に煤塵等が付着し、洗浄が必要となった場合でも、
下部の排出用孔により排出されるため、内部に水が溜ま
ることによる腐食等の発生がなくなる。なお、排出用の
孔は、洗浄等が必要なとき以外は、ネジ等により塞いで
いても良いし、共鳴室への燃焼ガス通過用の孔（共鳴室
下部を開放するも含む）を共用しても良い。According to the invention of claim 2, an exhaust hole for dust and the like accumulated in the resonance chamber is provided below the resonance chamber (not shown). Even when dust or the like adheres to the passage hole to the resonance chamber or inside the resonance chamber and requires cleaning,
Since the water is discharged through the lower discharge hole, corrosion or the like due to accumulation of water inside is eliminated. The discharge hole may be closed with a screw or the like except when cleaning or the like is required, or the hole for passing the combustion gas to the resonance chamber (including opening the lower part of the resonance chamber) may be shared. May be.
【００１３】「請求項３」の発明は、前述の共鳴室内部
にグラスファイバー等の緩衝部材を入れたものである。
（図示せず） 共鳴室内にグラスファイバー等緩衝部材をつめることで
消音効果が広い範囲の周波数域で得られる。According to a third aspect of the present invention, a buffer member such as glass fiber is provided in the resonance chamber.
(Not shown) By filling a buffer member such as glass fiber in the resonance chamber, a noise reduction effect can be obtained in a wide frequency range.
【００１４】[0014]
【発明の効果】本発明を実施することで、燃焼音を消音
させることができ、また水管への熱吸収を妨げることな
く、逆に熱吸収率を増加させることができる。また、従
来水管間に設けられていたヒレと同形状の部材を追加す
るのみで製作できるため、低コストである。そして、ヒ
レから水管そして水管内缶水への熱伝達により、ヒレの
温度が低下し、共鳴室を構成しているヒレ４、４’（共
鳴室）の異常過熱が防止される。また、共鳴室に蓄積し
た煤塵等も容易に排出することができ、さらに、消音効
果が広い範囲の周波数域で得られる。According to the present invention, the combustion noise can be reduced, and the heat absorption rate can be increased without hindering heat absorption in the water pipe. Further, since it can be manufactured only by adding a member having the same shape as the fin conventionally provided between the water pipes, the cost is low. Then, the heat transfer from the fins to the water pipe and the water in the water pipe lowers the temperature of the fins and prevents the fins 4, 4 '(resonance chamber) constituting the resonance chamber from being overheated abnormally. Further, dust and the like accumulated in the resonance chamber can be easily discharged, and furthermore, the noise reduction effect can be obtained in a wide frequency range.
【図１】本発明の一実施例を示した縦断面図FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.
【図２】図１のＡ−Ａ断面図FIG. 2 is a sectional view taken along line AA of FIG. 1;
【図３】図１のＢより見た図FIG. 3 is a view seen from B in FIG. 1;
【図４】本発明の一実施例を示した横断面図FIG. 4 is a cross-sectional view showing one embodiment of the present invention.
【図５】従来例の縦断面図FIG. 5 is a longitudinal sectional view of a conventional example.
【図６】図６のＣ−Ｃ断面図6 is a sectional view taken along the line CC in FIG. 6;
１ 上部管寄せ ２ 下部管寄せ ３ 水管 ４ ヒレ（内側） ４’ ヒレ（外側） ５ メクラ板 ６ 上部耐火材 ７ 下部耐火材 ８ バーナ ９ 燃焼室 １０ 排気筒 １１ 共鳴室 DESCRIPTION OF SYMBOLS 1 Upper header 2 Lower header 3 Water pipe 4 Fin (inside) 4 'Fin (outside) 5 Mekura board 6 Upper refractory material 7 Lower refractory material 8 Burner 9 Combustion chamber 10 Exhaust pipe 11 Resonance chamber
Claims (3)
け、上下管寄せ間を多数の垂直な水管で連結した多管式
貫流ボイラにおいて、 任意の隣接する水管を２枚のヒレにより連結し、水管と
ヒレにより作られた空間の上部及び下部の開放された部
分をメクラ板若しくは管寄せ又は耐火材で塞ぐことによ
り共鳴室を設け、共鳴室には燃焼ガスが共鳴室に通じる
孔を設けたことを特長とする多管式貫流ボイラの燃焼室
構造。In a multi-tube once-through boiler in which an upper header is provided at an upper part and a lower header is provided at a lower part, and a plurality of vertical water pipes are connected between the upper and lower headers, an arbitrary adjacent water pipe is connected by two fins. A resonance chamber is provided by connecting and closing the open upper and lower parts of the space created by the water pipe and the fin with a metal plate, header, or refractory material.The resonance chamber has a hole through which the combustion gas passes to the resonance chamber. The combustion chamber structure of a multi-tube once-through boiler characterized by the provision of
において、共鳴室下部に、共鳴室内に蓄積される煤塵等
の排出孔を設けたことを特長とする多管式貫流ボイラの
燃焼室構造。2. The multi-tube once-through boiler according to claim 1, wherein a discharge hole for dust and the like accumulated in the resonance chamber is provided below the resonance chamber. Combustion chamber structure.
において、共鳴室内部にグラスファイバー等の緩衝部材
を入れたことを特長とする多管式貫流ボイラの燃焼室構
造。3. The combustion chamber structure of a multi-tube once-through boiler according to claim 1, wherein a buffer member such as glass fiber is placed inside the resonance chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10262345A JP2000074304A (en) | 1998-08-31 | 1998-08-31 | Sound attenuating structure for multitubular once- through boiler combustion sound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10262345A JP2000074304A (en) | 1998-08-31 | 1998-08-31 | Sound attenuating structure for multitubular once- through boiler combustion sound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000074304A true JP2000074304A (en) | 2000-03-14 |
Family
ID=17374465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10262345A Pending JP2000074304A (en) | 1998-08-31 | 1998-08-31 | Sound attenuating structure for multitubular once- through boiler combustion sound |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000074304A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012211751A (en) * | 2011-03-31 | 2012-11-01 | Universal Shipbuilding Corp | Waste heat recovery apparatus of exhaust receiver |
| WO2013009027A2 (en) * | 2011-07-08 | 2013-01-17 | 주식회사 경동나비엔 | Combustion-heat exchange system having resonance chamber, for boiler or water heater |
| CN104110673A (en) * | 2014-07-22 | 2014-10-22 | 江苏双良锅炉有限公司 | Double-flue reversal chamber of large horizontal fire-tube boiler |
-
1998
- 1998-08-31 JP JP10262345A patent/JP2000074304A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012211751A (en) * | 2011-03-31 | 2012-11-01 | Universal Shipbuilding Corp | Waste heat recovery apparatus of exhaust receiver |
| WO2013009027A2 (en) * | 2011-07-08 | 2013-01-17 | 주식회사 경동나비엔 | Combustion-heat exchange system having resonance chamber, for boiler or water heater |
| WO2013009027A3 (en) * | 2011-07-08 | 2013-03-14 | 주식회사 경동나비엔 | Combustion-heat exchange system having resonance chamber, for boiler or water heater |
| CN104110673A (en) * | 2014-07-22 | 2014-10-22 | 江苏双良锅炉有限公司 | Double-flue reversal chamber of large horizontal fire-tube boiler |
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