JPH08601Y2 - Burner box - Google Patents
Burner boxInfo
- Publication number
- JPH08601Y2 JPH08601Y2 JP10651589U JP10651589U JPH08601Y2 JP H08601 Y2 JPH08601 Y2 JP H08601Y2 JP 10651589 U JP10651589 U JP 10651589U JP 10651589 U JP10651589 U JP 10651589U JP H08601 Y2 JPH08601 Y2 JP H08601Y2
- Authority
- JP
- Japan
- Prior art keywords
- burner
- box
- chrome
- alloy layer
- partition plate
- 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 - Fee Related
Links
Landscapes
- Air Supply (AREA)
- Combustion Of Fluid Fuel (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は，従来用いられている耐久性に劣るバーナ風
箱の耐久性を向上させる技術分野で利用される。[Detailed Description of the Invention] [Industrial field of application] The present invention is used in the technical field of improving the durability of a burner wind box which is conventionally inferior in durability.
従来のバーナ風箱は第３図に示すようにバーナノズル
06が多数配置され，バーナノズル06をサポートとする側
板04と個々のバーナノズル06を仕切るための仕切板05で
構成される。As shown in Fig. 3, the conventional burner box is a burner nozzle.
A large number of 06 are arranged, and are composed of a side plate 04 that supports the burner nozzles 06 and a partition plate 05 that partitions each burner nozzle 06.
バーナノズル06は炉内の燃焼を円滑に効率よく行なう
ため，個々のバーナノズル06に供給される空気，燃料は
異なり，予め決定された量を噴射するようになってい
る。そのため，一部のバーナでは過剰な空気を供給して
いることになる。また，ボイラが低負荷になるとバーナ
の使用本数を減少させるが，その際，不使用のバーナノ
ズル付近では炉内の輻射熱により高温となり，激しい高
温酸化を受ける。Since the burner nozzles 06 smoothly and efficiently burn the inside of the furnace, the air and fuel supplied to the individual burner nozzles 06 are different, and a predetermined amount is injected. Therefore, some burners are supplying excess air. Also, when the load of the boiler becomes low, the number of burners used is reduced, but at that time, the radiant heat in the furnace raises the temperature near the unused burner nozzles, resulting in severe high-temperature oxidation.
バーナ風箱の仕切板，側板の材料としては従来,2 1/4
Cr鋼などの低合金鋼が材料の加工性，溶接性を考慮し
て使用されている。As the material of the partition plate and side plate of the burner box, the conventional 2 1/4
Low alloy steel such as Cr steel is used in consideration of the workability and weldability of the material.
〔考案が解決しようとする問題点〕 従来のバーナ風箱の仕切板，側板が短期間の使用によ
って高温酸化を受け損耗する欠点があり，ひいてはバー
ナノズルの脱落へつながるため，その補修が不可欠であ
る。したがって，本考案はバーナ風箱の仕切板，側板の
高温酸化を防止し，使用寿命を向上させることにある。[Problems to be solved by the invention] The partition plate and side plate of the conventional burner wind box have a drawback that they are damaged by high temperature oxidation due to short-term use, and eventually lead to the burner nozzle falling off, so repair is essential. . Therefore, the present invention is intended to prevent the high temperature oxidation of the partition plate and the side plate of the burner box and improve the service life.
バーナ風箱の仕切板，側板で火炎による輻射熱の影響
を受ける箇所において，部材の端面に溶接法にてクロー
ムを20wt〜60wt％含有しその他にニッケルを主成分とす
る合金層を形成し，さらに部材表面に溶射法にてクロー
ムを20〜60wt％含有しその他にニッケルを主成分とする
合金層を0.2mm厚さ以上形成させる。解決手段として
は，部材表面に溶射法にて合金層を形成するだけでも効
果があるが，溶射法による合金層は部材端面において母
材との密着性が懸念され，合金層がはく離する恐れがあ
る。又，部材端面が輻射熱により酸化の影響を受けるた
め，部材端面に溶接法による合金層を形成した。At the parts affected by radiant heat from flames on the partition plates and side plates of the burner wind box, an alloy layer containing chrome 20wt-60wt% and nickel as the main component was formed on the end face of the member by welding. An alloy layer containing 20 to 60 wt% of chrome and containing nickel as a main component is formed to a thickness of 0.2 mm or more on the surface of the member by a thermal spraying method. As a solution, it is effective only to form an alloy layer on the surface of the member by the thermal spraying method, but the alloy layer by the thermal spraying method may cause peeling of the alloy layer due to concern about adhesion to the base material at the end surface of the member. is there. In addition, since the end surface of the member is affected by oxidation due to radiant heat, an alloy layer was formed on the end surface of the member by welding.
バーナ風箱の仕切板，側板の火炎による輻射熱の影響
を受ける箇所において，端面に溶接法にてクロームを20
〜60wt％含有する合金層を形成し，さらに端面を含む表
面に溶射法にてクロームを20〜60wt％含有する合金層を
形成しているため，従来材に比べ耐高温酸化に優れてい
る。したがって，本考案のバーナ風箱は長期間の使用に
耐えられる。At locations where the radiant heat from the flames of the partition plate and side plates of the burner wind box is affected, chrome is applied to the end faces by welding.
The alloy layer containing ~ 60wt% is formed, and the alloy layer containing 20 ~ 60wt% of chrome is formed on the surface including the end face by the thermal spraying method. Therefore, the burner box of the present invention can withstand long-term use.
第１図に本考案に係るバーナ風箱の仕切板，側板の断
面構成，第２図にバーナ風箱の斜視図を示すものであ
る。FIG. 1 is a sectional view of a partition plate and a side plate of a burner box according to the present invention, and FIG. 2 is a perspective view of the burner box.
01はバーナ風箱の仕切板，側板の母材であり，その材
質は2 1/4 Cr鋼である。02はバーナ風箱の仕切板，側板
端面に被覆アーク溶接で形成された50wt％Ni-50wt％Cr
合金層である。03はバーナ風箱の仕切板，側板表面にプ
ラズマ溶射法で形成された50wt％Ni-50wt％Cr合金層で
あり，その厚さは0.4mmとした。01 is the base material of the partition plate and side plate of the burner box, and its material is 2 1/4 Cr steel. 02 is a partition plate of the burner box, 50 wt% Ni-50 wt% Cr formed by covered arc welding on the end faces of the side plates
It is an alloy layer. Reference numeral 03 is a partition plate of the burner box, and a 50 wt% Ni-50 wt% Cr alloy layer formed on the surface of the side plate by plasma spraying, and its thickness was 0.4 mm.
被覆アーク溶接は，棒径4mmの50wt％Ni-50wt％Cr被覆
アーク溶接棒を用いて溶接電流140Aで２層溶接とした。The coated arc welding was a two-layer welding with a welding current of 140 A using a 50 wt% Ni-50 wt% Cr coated arc welding rod with a rod diameter of 4 mm.
プラズマ溶射条件は，プラズマガスとしてAr50l/min,
He20l/minを供給し，プラズマアーク電流900A,プラズマ
アーク電圧40V,溶射距離を100mmとした。Plasma spraying conditions are Ar50l / min as plasma gas,
He was supplied at 20 l / min, the plasma arc current was 900 A, the plasma arc voltage was 40 V, and the spray distance was 100 mm.
溶射材料は，粒度範囲を40〜100μｍとした50wt％Ni-
50wt％Cr合金粉末を用いた。The thermal spray material is 50 wt% Ni- with a particle size range of 40-100 μm.
A 50 wt% Cr alloy powder was used.
合金層02,03は耐高温酸化性の観点からクロームを20w
t％以上含有する必要があり，クローム含有率が60wt％
を超えると作業性が悪くなるため，クローム含有率は20
〜60wt％が好ましい。Alloy layers 02 and 03 are made of chrome 20w from the viewpoint of high temperature oxidation resistance.
It is necessary to contain t% or more, and the chrome content is 60 wt%
Since the workability deteriorates when the content exceeds chrome, the chrome content is 20
-60 wt% is preferred.
本考案によるバーナ風箱を既設ボイラに１年間装着
し，従来のバーナ風箱とその耐久性を比較した。その結
果，従来のバーナ風箱の仕切板，側板で板厚が17mmから
8mmに減肉しているのに対して，本考案によるバーナ風
箱の仕切板，側板では板厚の減肉が認められず優れた耐
高温酸化性を示すことがわかった。従って，本考案によ
るバーナ風箱は従来のものよりも耐久性が優れボイラ運
転経費の軽減に大きく寄与するものである。The burner-style box according to the present invention was installed in an existing boiler for one year, and its durability was compared with that of a conventional burner-style box. As a result, the thickness of the partition plate and side plate of the conventional burner box is from 17 mm.
While the thickness was reduced to 8 mm, it was found that the partition plates and side plates of the burner-style box according to the present invention did not show any reduction in plate thickness and showed excellent high-temperature oxidation resistance. Therefore, the burner wind box according to the present invention is more durable than the conventional one and greatly contributes to the reduction of boiler operating costs.
第１図は本考案に係るバーナ風箱の仕切板，側板の断面
構成図，第２図はバーナ風箱の斜視図，第３図は従来の
バーナ風箱の斜視図である。 01……母材,02……溶接法による合金層,03……溶射法に
よる合金層,04……側板,05……仕切板,06……バーナノ
ズル。FIG. 1 is a sectional configuration view of a partition plate and a side plate of a burner style box according to the present invention, FIG. 2 is a perspective view of the burner style box, and FIG. 3 is a perspective view of a conventional burner style box. 01 …… Base material, 02 …… Welding alloy layer, 03 …… Spraying alloy layer, 04 …… Side plate, 05 …… Partition plate, 06 …… Burner nozzle.
Claims (1)
燃焼を行なうバーナノズルを多数配置したバーナ風箱に
おいて，バーナ風箱を構成する仕切板，側板の端面にク
ロームを20〜60wt％含有しその他にニッケルを主成分と
する合金属を溶接法に形成し，さらに上記仕切板，側板
の表面にクロームを20〜60wt％含有しその他にニッケル
を主成分とする合金層を溶射法にて0.2mm以上厚さ形成
させたことを特徴とするバーナ風箱。1. A burner air box in which a large number of burner nozzles for combusting liquid, gas, solid fuel or a mixed fuel thereof are arranged, and the partition plates and side plates constituting the burner air box contain 20 to 60 wt% of chrome. In addition, nickel alloy as the main component is formed by the welding method, and an alloy layer containing 20 to 60 wt% of chrome on the surfaces of the partition plates and side plates and having the main component of nickel is 0.2 by the thermal spraying method. A burner-style box characterized by being formed with a thickness of at least mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10651589U JPH08601Y2 (en) | 1989-09-11 | 1989-09-11 | Burner box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10651589U JPH08601Y2 (en) | 1989-09-11 | 1989-09-11 | Burner box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0346739U JPH0346739U (en) | 1991-04-30 |
| JPH08601Y2 true JPH08601Y2 (en) | 1996-01-10 |
Family
ID=31655242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10651589U Expired - Fee Related JPH08601Y2 (en) | 1989-09-11 | 1989-09-11 | Burner box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08601Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009169479A (en) * | 2008-01-10 | 2009-07-30 | Pfu Ltd | Sheet, keyboard, electronic equipment |
-
1989
- 1989-09-11 JP JP10651589U patent/JPH08601Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0346739U (en) | 1991-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |