JPH09178111A - Burner apparatus - Google Patents

Burner apparatus

Info

Publication number
JPH09178111A
JPH09178111A JP34101695A JP34101695A JPH09178111A JP H09178111 A JPH09178111 A JP H09178111A JP 34101695 A JP34101695 A JP 34101695A JP 34101695 A JP34101695 A JP 34101695A JP H09178111 A JPH09178111 A JP H09178111A
Authority
JP
Japan
Prior art keywords
burner
gas
pulverized coal
guide tube
oil
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.)
Granted
Application number
JP34101695A
Other languages
Japanese (ja)
Other versions
JP3823353B2 (en
Inventor
Hideo Ichikawa
英男 市川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Priority to JP34101695A priority Critical patent/JP3823353B2/en
Publication of JPH09178111A publication Critical patent/JPH09178111A/en
Application granted granted Critical
Publication of JP3823353B2 publication Critical patent/JP3823353B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To prevent wear and closure of a spud tip part during the extinguishing of a burner by a method wherein a gas burner is arranged free to move to an inner cylinder of a pulverized coal burner and an oil burner along the direction of the axis thereof and a gas burner moving mechanism is provided to move the gas burner between the advance position in combustion and the retraction position in extinguishment. SOLUTION: A gas burner 7 is arranged free to move to an inner cylinder 22 of a pulverized coal burner 20 and an oil burner 23 in the direction of the axis thereof. In the extinguishing of the gas burner 7, as a driver 31 of a burner moving mechanism 27 is extended, a guide tube 28 is retracted by an internal guide member 29 and an external guide member 30 and each spud 6 moves backward to the retraction position B in extinguishment together with the guide tube 28. Under such a condition, even when a pulverized burner 20 or an oil burner 23 are used to burn pulverized coal or a fuel oil, the tip part of each spud 6 of the burner 7 will not wear by heat. Besides, combustion exhaust gas little enters into the spud 6 thereby eliminating fear of closing the spud 6.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、バーナ装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner device.

【０００２】[0002]

【従来の技術】図６は、従来からボイラ等に用いられて
いるバーナ装置の一例を示すもので、図中、１は火炉、
２は炉壁管３によって構成される火炉１の炉壁４に開口
されたバーナスロート部、５はバーナスロート部２の内
側に合致するように設けられたバーナスロートリングで
あり、前記火炉１のバーナスロート部２には、燃焼空気
を供給する風箱８が取り付けられると共に、該風箱８を
貫通して略同心状に延びるよう微粉炭バーナ２０の外筒
２１と内筒２２とが配設され、該微粉炭バーナ２０の外
筒２１と内筒２２との間には微粉炭が供給されて先端開
口部から噴出されるようになっている。2. Description of the Related Art FIG. 6 shows an example of a burner device conventionally used in a boiler or the like, in which 1 is a furnace,
Reference numeral 2 is a burner throat portion opened in a furnace wall 4 of a furnace 1 constituted by a furnace wall tube 3, and 5 is a burner throat ring provided so as to match the inside of the burner throat portion 2. A wind box 8 for supplying combustion air is attached to the burner throat portion 2, and an outer cylinder 21 and an inner cylinder 22 of the pulverized coal burner 20 are arranged so as to penetrate the wind box 8 and extend substantially concentrically. Then, the pulverized coal is supplied between the outer cylinder 21 and the inner cylinder 22 of the pulverized coal burner 20 and ejected from the tip opening.

【０００３】前記微粉炭バーナ２０の外筒２１の外周に
設けたベーン支持板１０と前記バーナスロートリング５
との間には、アウタベーン９が配設され、該アウタベー
ン９の下流側における前記外筒２１とバーナスロートリ
ング５との間には、内側の燃焼空気通路１２と外側の燃
焼空気通路１３とを区画するフローデバイダ１１が設け
られると共に、前記内側の燃焼空気通路１２には、イン
ナベーン１４が配設され、前記炉壁４に開口されたバー
ナスロート部２の開口縁部には、耐火材１５が打設され
ている。[0003] The vane support plate 10 provided on the outer periphery of the outer cylinder 21 of the pulverized coal burner 20 and the burner throat ring 5
The outer vane 9 is disposed between the outer vane 9 and the burner throat ring 5, and an inner combustion air passage 12 and an outer combustion air passage 13 are provided between the outer cylinder 21 and the burner throat ring 5 on the downstream side of the outer vane 9. A flow divider 11 for partitioning is provided, an inner vane 14 is provided in the inner combustion air passage 12, and a refractory material 15 is provided at an opening edge portion of the burner throat portion 2 opened in the furnace wall 4. It has been cast.

【０００４】前記微粉炭バーナ２０の内筒２２内には、
重油等の燃料油が供給される油バーナ２３が内筒２２と
略同心状に延びるよう配設されると共に、前記微粉炭バ
ーナ２０の内筒２２内における油バーナ２３外周位置に
は、該油バーナ２３と略平行に延びるよう複数本（図の
例では六本）のスパッド６を配設してなるガスバーナ７
が設けられている。In the inner cylinder 22 of the pulverized coal burner 20,
An oil burner 23, to which fuel oil such as heavy oil is supplied, is arranged so as to extend substantially concentrically with the inner cylinder 22, and at the outer peripheral position of the oil burner 23 in the inner cylinder 22 of the pulverized coal burner 20, the oil burner 23 is disposed. A gas burner 7 in which a plurality of (six in the illustrated example) spuds 6 are arranged so as to extend substantially parallel to the burner 23.
Is provided.

【０００５】前記油バーナ２３は、前記内筒２２の後端
部に設けられたホルダ２４に対し、その軸心方向へ移動
自在に挿入されており、風箱８外部から突設された支持
ブラケット２５上に設けたエアシリンダ等の駆動装置２
６の伸縮作動により、軸心方向へ移動されるようになっ
ている。The oil burner 23 is movably inserted in the axial direction of a holder 24 provided at the rear end of the inner cylinder 22, and a support bracket projecting from the outside of the wind box 8 is provided. Drive device 2 such as an air cylinder provided on 25
By the expansion and contraction operation of 6, it is moved in the axial direction.

【０００６】一方、前記ガスバーナ７のスパッド６の基
端部は、図６及び図７に示される如く、風箱８の外部に
配設され且つバルブ１６の開操作により天然ガス等の燃
料ガスが供給される逆Ｕ字状の燃料ガス供給ヘッダ１７
に接続されており、又、前記スパッド６の風箱８を貫通
してバーナスロート部２へ向かって延びる先端部は、図
８に示される如く、軸線に対して斜めに切断された部分
に、多数の燃料ガス噴出孔１８が穿設された楕円状のプ
レート１９を固着して形成されている。On the other hand, the base end portion of the spud 6 of the gas burner 7 is disposed outside the wind box 8 as shown in FIGS. 6 and 7, and fuel gas such as natural gas is opened by opening the valve 16. Inverted U-shaped fuel gas supply header 17 to be supplied
Is connected to the burner throat portion 2 through the wind box 8 of the spud 6, and the tip portion extending toward the burner throat portion 2 is, as shown in FIG. An elliptical plate 19 having a large number of fuel gas ejection holes 18 is fixedly formed.

【０００７】前述の如きバーナ装置において微粉炭バー
ナ２０を使用する際には、燃焼空気を風箱８からアウタ
ベーン９とインナベーン１４とを介して旋回力を与えつ
つ燃焼空気通路１２と燃焼空気通路１３とに導入した状
態で、外筒２１と内筒２２との間に搬送用空気と一緒に
微粉炭を供給すると、該微粉炭が外筒２１と内筒２２の
先端開口部から噴出され、該微粉炭と前記燃焼空気とが
混合され、図示していない点火トーチによる着火によ
り、火炉１内において微粉炭の燃焼が行われるようにな
っている。When the pulverized coal burner 20 is used in the burner device as described above, the combustion air passage 12 and the combustion air passage 13 are provided while giving a swirling force to the combustion air from the wind box 8 through the outer vane 9 and the inner vane 14. When pulverized coal is supplied between the outer cylinder 21 and the inner cylinder 22 together with the conveying air in a state of being introduced into the outer cylinder 21, the pulverized coal is ejected from the tip openings of the outer cylinder 21 and the inner cylinder 22, The pulverized coal and the combustion air are mixed and ignited by an ignition torch (not shown) so that the pulverized coal is burned in the furnace 1.

【０００８】又、前述の如きバーナ装置において油バー
ナ２３を使用する際には、燃焼空気を風箱８からアウタ
ベーン９とインナベーン１４とを介して旋回力を与えつ
つ燃焼空気通路１２と燃焼空気通路１３とに導入した状
態で、油バーナ２３に燃料油を供給すると、該燃料油が
油バーナ２３の先端部から噴出され、該燃料油と前記燃
焼空気とが混合され、図示していない点火トーチによる
着火により、火炉１内において燃料油の燃焼が行われる
ようになっている。When the oil burner 23 is used in the burner device as described above, the combustion air passage 12 and the combustion air passage are provided while giving a swirling force to the combustion air from the wind box 8 through the outer vane 9 and the inner vane 14. 13, when fuel oil is supplied to the oil burner 23, the fuel oil is ejected from the tip of the oil burner 23, the fuel oil and the combustion air are mixed, and an ignition torch (not shown) The fuel oil is combusted in the furnace 1 by the ignition.

【０００９】更に又、前述の如きバーナ装置においてガ
スバーナ７を使用する際には、燃焼空気を風箱８からア
ウタベーン９とインナベーン１４とを介して旋回力を与
えつつ燃焼空気通路１２と燃焼空気通路１３とに導入し
た状態で、バルブ１６を開くと、燃料ガスが燃料ガス供
給ヘッダ１７から各スパッド６へ供給されて先端部の燃
料ガス噴出孔１８から噴出され、該燃料ガスと前記燃焼
空気とが混合され、図示していない点火トーチによる着
火により、火炉１内において燃料ガスの燃焼が行われる
ようになっている。Furthermore, when the gas burner 7 is used in the burner apparatus as described above, the combustion air passage 12 and the combustion air passage are provided while giving a swirling force to the combustion air from the wind box 8 through the outer vane 9 and the inner vane 14. When the valve 16 is opened in the state where the fuel gas is introduced into the fuel cell 13, the fuel gas is supplied from the fuel gas supply header 17 to each spud 6 and is ejected from the fuel gas ejection hole 18 at the tip end, and the fuel gas and the combustion air are discharged. Are mixed and the fuel gas is burned in the furnace 1 by ignition by an ignition torch (not shown).

【００１０】[0010]

【発明が解決しようとする課題】しかしながら、前述の
如きバーナ装置においては、ガスバーナ７は燃焼位置で
固定されたまま移動できないため、該ガスバーナ７の消
火時に、微粉炭バーナ２０或いは油バーナ２３が使用さ
れ、微粉炭或いは燃料油の燃焼が行われた場合、前記ガ
スバーナ７の各スパッド６の先端部が熱によって損耗し
たり、各スパッド６内にＳＯ3を含む燃焼排ガスが入り
込み、各スパッド６が閉塞したりする可能性があった。However, in the burner device as described above, since the gas burner 7 cannot be moved while being fixed at the combustion position, the pulverized coal burner 20 or the oil burner 23 is used when the gas burner 7 is extinguished. When the pulverized coal or fuel oil is burned, the tip of each spud 6 of the gas burner 7 is damaged by heat, or combustion exhaust gas containing SO 3 enters each spud 6, and each spud 6 There was a possibility of blockage.

【００１１】本発明は、斯かる実情に鑑み、ガスバーナ
の消火時におけるスパッド先端部の損耗や閉塞を防止し
得るバーナ装置を提供しようとするものである。In view of the above situation, the present invention intends to provide a burner device capable of preventing the spud tip portion from being worn or blocked when the gas burner is extinguished.

【００１２】[0012]

【課題を解決するための手段】本発明は、燃焼空気を供
給する風箱が取り付けられた火炉のバーナスロート部
に、風箱を貫通して略同心状に延びるよう外筒と内筒と
を配設してなり、且つ前記外筒と内筒との間に微粉炭が
供給されて先端開口部から噴出される微粉炭バーナと、
該微粉炭バーナの内筒内に略同心状に延びるよう配設さ
れ、且つ燃料油が供給される油バーナと、前記微粉炭バ
ーナの内筒内における油バーナ外周位置に、該油バーナ
と略平行に延び且つ燃料ガスが供給される複数本のスパ
ッドを配設してなるガスバーナとを備えたバーナ装置に
おいて、ガスバーナを微粉炭バーナの内筒と油バーナに
対し軸心方向へ移動自在に配設すると共に、該ガスバー
ナを燃焼時前進位置と消火時後退位置との間で移動せし
めるガスバーナ移動機構を具備したことを特徴とするバ
ーナ装置にかかるものである。SUMMARY OF THE INVENTION According to the present invention, an outer cylinder and an inner cylinder are provided in a burner throat portion of a furnace in which a wind box for supplying combustion air is attached so as to extend substantially concentrically through the wind box. A pulverized coal burner that is disposed and that is supplied with pulverized coal between the outer cylinder and the inner cylinder and ejected from the tip opening portion,
An oil burner, which is arranged so as to extend substantially concentrically in the inner cylinder of the pulverized coal burner, and to which fuel oil is supplied, and an oil burner at the outer peripheral position of the oil burner in the inner cylinder of the pulverized coal burner. In a burner device including a gas burner having a plurality of spuds extending in parallel and supplied with fuel gas, the gas burner is arranged so as to be movable in the axial direction with respect to the inner cylinder of the pulverized coal burner and the oil burner. The burner device is provided with a gas burner moving mechanism for moving the gas burner between a forward position during combustion and a backward position during extinction.

【００１３】該バーナ装置においては、ガスバーナ移動
機構を、複数本のスパッドの外周を包囲し且つ複数本の
スパッドを連結するように微粉炭バーナの内筒内に配設
されるガイドチューブと、該ガイドチューブと微粉炭バ
ーナの内筒との間に配設され、且つガイドチューブを微
粉炭バーナの内筒に対し軸心方向へ移動自在に支持する
内部ガイド部材と、前記ガイドチューブと風箱外部から
突設された支持ブラケットとの間に配設され、且つガイ
ドチューブを支持ブラケットに対し軸心方向へ移動自在
に支持する外部ガイド部材と、前記ガイドチューブを軸
心方向へ移動せしめる駆動装置とから構成することがで
きる。In the burner device, the gas burner moving mechanism includes a guide tube which surrounds the outer periphery of the plurality of spuds and is arranged in the inner cylinder of the pulverized coal burner so as to connect the plurality of spuds. An internal guide member that is arranged between the guide tube and the inner cylinder of the pulverized coal burner, and that supports the guide tube movably in the axial direction with respect to the inner cylinder of the pulverized coal burner; An external guide member disposed between the support bracket and the support bracket projecting from the support tube and movably supporting the guide tube in the axial direction with respect to the support bracket; and a drive device for moving the guide tube in the axial direction. Can consist of:

【００１４】又、本発明は、燃焼空気を供給する風箱が
取り付けられた火炉のバーナスロート部に、風箱を貫通
して延びるよう配設され、且つ燃料油が供給される油バ
ーナと、該油バーナ外周位置に、風箱を貫通して油バー
ナと略平行に延び且つ燃料ガスが供給される複数本のス
パッドを配設してなるガスバーナとを備えたバーナ装置
において、ガスバーナを油バーナに対し軸心方向へ移動
自在に配設すると共に、該ガスバーナを燃焼時前進位置
と消火時後退位置との間で移動せしめるガスバーナ移動
機構を具備したことを特徴とするバーナ装置にかかるも
のである。Further, according to the present invention, an oil burner, which is arranged so as to extend through the wind box and is supplied with fuel oil, is provided in a burner throat portion of a furnace in which a wind box for supplying combustion air is attached. In a burner device having a plurality of spuds penetrating a wind box, extending substantially in parallel to the oil burner, and provided with a plurality of spuds to which fuel gas is supplied, in the outer peripheral position of the oil burner. The burner device is characterized in that it is provided so as to be movable in the axial direction and has a gas burner moving mechanism that moves the gas burner between a forward position during combustion and a backward position during extinction. .

【００１５】該バーナ装置においては、ガスバーナ移動
機構を、複数本のスパッドの外周を包囲し且つ複数本の
スパッドを連結するように配設されるガイドチューブ
と、該ガイドチューブと風箱外部から突設された支持ブ
ラケットとの間に配設され、且つガイドチューブを支持
ブラケットに対し軸心方向へ移動自在に支持する外部ガ
イド部材と、前記ガイドチューブを軸心方向へ移動せし
める駆動装置とから構成することができる。In the burner device, the gas burner moving mechanism is provided with a guide tube that surrounds the outer periphery of the plurality of spuds and is arranged so as to connect the plurality of spuds, and the guide tube and the outside of the wind box. An external guide member, which is disposed between the support bracket and the support bracket, supports the guide tube so as to be movable in the axial direction with respect to the support bracket, and a drive device for moving the guide tube in the axial direction. can do.

【００１６】上記手段によれば、以下のような作用が得
られる。According to the above means, the following effects can be obtained.

【００１７】微粉炭バーナと油バーナとガスバーナとを
備えたバーナ装置においてガスバーナを使用する際に
は、ガスバーナの各スパッドを燃焼時前進位置に配置す
ると共に、燃焼空気を風箱からバーナスロート部に導入
した状態で、燃料ガスを各スパッドへ供給し先端部から
噴出させると、該燃料ガスと前記燃焼空気とが混合さ
れ、火炉内において燃料ガスの燃焼が行われる一方、前
記ガスバーナの消火時には、ガスバーナ移動機構の作動
により、ガスバーナの各スパッドを消火時後退位置に後
退させれば、この状態で、微粉炭バーナ或いは油バーナ
が使用され、微粉炭或いは燃料油の燃焼が行われたとし
ても、前記ガスバーナの各スパッドの先端部が熱によっ
て損耗したりすることはなく、又、各スパッド内に燃焼
排ガスが入り込むこともほとんどなくなり、各スパッド
が閉塞する心配もなくなる。When a gas burner is used in a burner device equipped with a pulverized coal burner, an oil burner and a gas burner, each spud of the gas burner is arranged at a forward position during combustion and combustion air is blown from the wind box to the burner throat section. In the introduced state, when the fuel gas is supplied to each spud and jetted from the tip, the fuel gas and the combustion air are mixed, and while the fuel gas is burned in the furnace, when the gas burner is extinguished, By operating the gas burner moving mechanism, if each spud of the gas burner is retracted to the retracted position when extinguishing, in this state, the pulverized coal burner or the oil burner is used, and even if the pulverized coal or the fuel oil is burned, The tip of each spud of the gas burner will not be damaged by heat, and combustion exhaust gas will enter into each spud. Most no longer, worry no longer each spud is closed.

【００１８】ガスバーナ移動機構を、ガイドチューブと
内部ガイド部材と外部ガイド部材と駆動装置とから構成
すれば、駆動装置の作動により、ガイドチューブを内部
ガイド部材と外部ガイド部材とによって支持させつつ、
安定した状態でガイドチューブと一緒に各スパッドを燃
焼時前進位置と消火時後退位置との間で前進又は後退さ
せることができる。If the gas burner moving mechanism is composed of the guide tube, the inner guide member, the outer guide member and the drive device, the guide tube is supported by the inner guide member and the outer guide member by the operation of the drive device,
In a stable state, each spud can be advanced or retracted together with the guide tube between the advance position for combustion and the retracted position for extinction.

【００１９】又、油バーナとガスバーナとを備えたバー
ナ装置においてガスバーナを使用する際には、ガスバー
ナの各スパッドを燃焼時前進位置に配置すると共に、燃
焼空気を風箱からバーナスロート部に導入した状態で、
燃料ガスを各スパッドへ供給し先端部から噴出させる
と、該燃料ガスと前記燃焼空気とが混合され、火炉内に
おいて燃料ガスの燃焼が行われる一方、前記ガスバーナ
の消火時には、ガスバーナ移動機構の作動により、ガス
バーナの各スパッドを消火時後退位置に後退させれば、
この状態で、油バーナが使用され、燃料油の燃焼が行わ
れたとしても、前記ガスバーナの各スパッドの先端部が
熱によって損耗したりすることはなく、又、各スパッド
内に燃焼排ガスが入り込むこともほとんどなくなり、各
スパッドが閉塞する心配もなくなる。When the gas burner is used in a burner device equipped with an oil burner and a gas burner, each spud of the gas burner is arranged at the forward position during combustion, and combustion air is introduced from the wind box to the burner throat section. In the state
When the fuel gas is supplied to each spud and jetted from the tip, the fuel gas and the combustion air are mixed, and the fuel gas is burned in the furnace, while the gas burner moving mechanism operates when the gas burner is extinguished. By moving each spud of the gas burner to the retracted position when extinguishing,
In this state, even if the oil burner is used and the fuel oil is burned, the tip of each spud of the gas burner is not worn by heat, and the combustion exhaust gas enters each spud. Almost no matter what, there is no need to worry about the blockage of each spud.

【００２０】ガスバーナ移動機構を、ガイドチューブと
外部ガイド部材と駆動装置とから構成すれば、駆動装置
の作動により、ガイドチューブを外部ガイド部材によっ
て支持させつつ、安定した状態でガイドチューブと一緒
に各スパッドを燃焼時前進位置と消火時後退位置との間
で前進又は後退させることができる。If the gas burner moving mechanism is composed of the guide tube, the external guide member and the drive unit, the guide tube is supported by the external guide member by the operation of the drive unit, and the guide tube and the guide tube are stably supported together. The spud can be advanced or retracted between an advanced position for burning and a retracted position for extinguishing.

【００２１】[0021]

【発明の実施の形態】以下、本発明の実施の形態を図示
例と共に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

【００２２】図１〜図４は本発明を実施する形態の一例
であって、図中、図６〜図８と同一の符号を付した部分
は同一物を表わしており、基本的な構成は図６〜図８に
示す従来のものと同様であるが、本図示例の特徴とする
ところは、図１〜図４に示す如く、ガスバーナ７を微粉
炭バーナ２０の内筒２２と油バーナ２３に対し軸心方向
へ移動自在に配設すると共に、該ガスバーナ７を燃焼時
前進位置Ａと消火時後退位置Ｂとの間で移動せしめるガ
スバーナ移動機構２７を具備した点にある。FIGS. 1 to 4 show an example of an embodiment for carrying out the present invention. In the drawings, the parts denoted by the same reference numerals as those in FIGS. 6 to 8 represent the same things, and the basic structure is Although it is similar to the conventional one shown in FIGS. 6 to 8, the feature of this illustrated example is that the gas burner 7 is the inner cylinder 22 of the pulverized coal burner 20 and the oil burner 23 as shown in FIGS. On the other hand, a gas burner moving mechanism 27 for moving the gas burner 7 between the forward position A at the time of combustion and the backward position B at the time of extinguishment is provided while being provided so as to be movable in the axial direction.

【００２３】前記ガスバーナ移動機構２７は、複数本の
スパッド６の外周を包囲し且つ複数本のスパッド６を連
結するように微粉炭バーナ２０の内筒２２内にガイドチ
ューブ２８を配設し、該ガイドチューブ２８と微粉炭バ
ーナ２０の内筒２２との間に、ガイドチューブ２８を微
粉炭バーナ２０の内筒２２に対し軸心方向へ移動自在に
支持する内部ガイド部材２９を設け、前記ガイドチュー
ブ２８と風箱８外部から突設された支持ブラケット２５
との間に、ガイドチューブ２８を支持ブラケット２５に
対し軸心方向へ移動自在に支持する外部ガイド部材３０
を設け、風箱８外部から突設された支持ブラケット２
５’上に、前記ガイドチューブ２８を軸心方向へ移動せ
しめるエアシリンダ等の駆動装置３１を設置してなる構
成を有しており、該駆動装置３１の伸縮作動により、ガ
スバーナ７を軸心方向へ移動し得るようになっている。The gas burner moving mechanism 27 has a guide tube 28 disposed inside the inner cylinder 22 of the pulverized coal burner 20 so as to surround the outer periphery of the plurality of spuds 6 and to connect the plurality of spuds 6, An internal guide member 29 is provided between the guide tube 28 and the inner cylinder 22 of the pulverized coal burner 20 to movably support the guide tube 28 with respect to the inner cylinder 22 of the pulverized coal burner 20 in the axial direction. 28 and a support bracket 25 projecting from the outside of the wind box 8
And an external guide member 30 that supports the guide tube 28 with respect to the support bracket 25 so as to be movable in the axial direction.
And a support bracket 2 provided to project from the outside of the wind box 8
A drive device 31 such as an air cylinder for moving the guide tube 28 in the axial direction is installed on the 5 ', and the expansion / contraction operation of the drive device 31 causes the gas burner 7 to move in the axial direction. You can move to.

【００２４】前記内部ガイド部材２９は、図２及び図３
に示す如く、ガイドチューブ２８の外周面左右両側に、
軸心方向へ延びるガイドレール２９ａを取り付けると共
に、微粉炭バーナ２０の内筒２２内部に設置したガイド
ブラケット２９ｃに、前記ガイドレール２９ａの上下面
と係合する複数のガイドローラ２９ｂを回転自在に配設
してなる構成を有している。尚、前記内部ガイド部材２
９は、ガイドチューブ２８側にガイドローラ２９ｂを取
り付け、内筒２２内部側にガイドレール２９ａを取り付
けるようにしてもよい。The internal guide member 29 is shown in FIGS.
As shown in FIG.
A guide rail 29a extending in the axial direction is attached, and a plurality of guide rollers 29b engaging with the upper and lower surfaces of the guide rail 29a are rotatably arranged on a guide bracket 29c installed inside the inner cylinder 22 of the pulverized coal burner 20. It has a configuration of being installed. Incidentally, the internal guide member 2
In the case of 9, the guide roller 29b may be attached to the guide tube 28 side, and the guide rail 29a may be attached to the inner side of the inner cylinder 22.

【００２５】又、前記外部ガイド部材３０は、図４に示
す如く、支持ブラケット２５上にベース部材３０ａを介
して軸心方向へ延びるガイドレール３０ｂを取り付ける
と共に、ガイドチューブ２８の外周面下側に取り付けた
脚ブラケット３０ｄに、前記ガイドレール３０ｂと摺動
自在に係合するガイド片３０ｃを取り付けてなる構成を
有している。As shown in FIG. 4, the external guide member 30 has a guide rail 30b extending in the axial direction on a support bracket 25 via a base member 30a and a guide tube 28 on the lower side of the outer peripheral surface thereof. The leg bracket 30d is attached with a guide piece 30c slidably engaged with the guide rail 30b.

【００２６】尚、前記微粉炭バーナ２０の内筒２２基端
部に取り付けられた遮蔽フランジ３２の前記ガイドチュ
ーブ２８貫通部には、該ガイドチューブ２８を摺動自在
に且つ気密に支持するグランドシール３３を取り付けて
あり、又、燃料ガス供給ヘッダ１７に接続される燃料ガ
ス供給用の配管途中には、フレキシブルチューブ（図示
せず）を設けてあり、前記ガスバーナ７の軸心方向への
移動を許容し得るようにしてある。A ground seal for slidably and airtightly supporting the guide tube 28 is provided in a penetrating portion of the guide tube 28 of a shielding flange 32 attached to a base end portion of the inner cylinder 22 of the pulverized coal burner 20. 33 is attached, and a flexible tube (not shown) is provided in the middle of the fuel gas supply pipe connected to the fuel gas supply header 17 to move the gas burner 7 in the axial direction. It's acceptable.

【００２７】次に、上記図示例の作動を説明する。Next, the operation of the above illustrated example will be described.

【００２８】バーナ装置においてガスバーナ７を使用す
る際には、ガスバーナ７の各スパッド６を燃焼時前進位
置Ａに配置すると共に、燃焼空気を風箱８からアウタベ
ーン９とインナベーン１４とを介して旋回力を与えつつ
燃焼空気通路１２と燃焼空気通路１３とに導入した状態
で、バルブ１６を開くと、燃料ガスが燃料ガス供給ヘッ
ダ１７から各スパッド６へ供給されて先端部の燃料ガス
噴出孔１８から噴出され、該燃料ガスと前記燃焼空気と
が混合され、図示していない点火トーチによる着火によ
り、火炉１内において燃料ガスの燃焼が行われる。When the gas burner 7 is used in the burner device, each spud 6 of the gas burner 7 is arranged at the forward position A during combustion, and the combustion air is swirled from the wind box 8 through the outer vane 9 and the inner vane 14. When the valve 16 is opened in a state where the fuel gas is introduced into the combustion air passage 12 and the combustion air passage 13, the fuel gas is supplied from the fuel gas supply header 17 to the respective spuds 6 and the fuel gas ejection holes 18 at the tip end. The fuel gas is ejected, the fuel gas and the combustion air are mixed, and the fuel gas is burned in the furnace 1 by ignition by an ignition torch (not shown).

【００２９】一方、前記ガスバーナ７の消火時には、ガ
スバーナ移動機構２７の駆動装置３１を伸長せしめる
と、ガイドチューブ２８が内部ガイド部材２９と外部ガ
イド部材３０とによって支持されつつ後退し、ガイドチ
ューブ２８と一緒に各スパッド６が消火時後退位置Ｂに
後退するため、この状態で、微粉炭バーナ２０或いは油
バーナ２３が使用され、微粉炭或いは燃料油の燃焼が行
われたとしても、前記ガスバーナ７の各スパッド６の先
端部が熱によって損耗したりすることはなく、又、各ス
パッド６内にＳＯ3を含む燃焼排ガスが入り込むことも
ほとんどなくなり、各スパッド６が閉塞する心配もなく
なる。On the other hand, at the time of extinguishing the gas burner 7, when the drive device 31 of the gas burner moving mechanism 27 is extended, the guide tube 28 is retracted while being supported by the inner guide member 29 and the outer guide member 30. Since the respective spuds 6 retreat to the retracted position B at the time of extinguishing together with them, in this state, even if the pulverized coal burner 20 or the oil burner 23 is used and combustion of the pulverized coal or fuel oil is performed, the gas burner 7 The tip portion of each spud 6 will not be worn by heat, and combustion exhaust gas containing SO 3 will hardly enter into each spud 6, and there will be no fear of clogging each spud 6.

【００３０】こうして、ガスバーナ７の消火時における
スパッド６先端部の損耗や閉塞を防止し得る。In this way, it is possible to prevent wear and blockage of the tip of the spud 6 when the gas burner 7 is extinguished.

【００３１】図５は本発明を実施する形態の他の例であ
って、図中、図１〜図４と同一の符号を付した部分は同
一物を表わしており、微粉炭バーナ２０がなく、油バー
ナ２３とガスバーナ７のみのバーナ装置において、ガス
バーナ７を、ガスバーナ移動機構２７の作動により、油
バーナ２３に対し軸心方向へ燃焼時前進位置Ａと消火時
後退位置Ｂとの間で移動自在に配設したものである。FIG. 5 shows another example of the embodiment of the present invention. In the figure, the parts denoted by the same reference numerals as those in FIGS. 1 to 4 represent the same things, and there is no pulverized coal burner 20. In a burner device having only the oil burner 23 and the gas burner 7, the gas burner 7 is moved in the axial direction with respect to the oil burner 23 between the combustion advance position A and the fire extinction retract position B by the operation of the gas burner moving mechanism 27. It is arranged freely.

【００３２】尚、図５の例における前記ガスバーナ移動
機構２７は、微粉炭バーナ２０の内筒２２が存在しない
ため、複数本のスパッド６の外周を包囲し且つ複数本の
スパッド６を連結するようにガイドチューブ２８を配設
し、該ガイドチューブ２８と風箱８外部から突設された
支持ブラケット２５との間に、ガイドチューブ２８を支
持ブラケット２５に対し軸心方向へ移動自在に支持する
外部ガイド部材３０を設け、風箱８外部から突設された
支持ブラケット２５’上に、前記ガイドチューブ２８を
軸心方向へ移動せしめるエアシリンダ等の駆動装置３１
を設置してなる構成を有しており、該駆動装置３１の伸
縮作動により、ガスバーナ７を軸心方向へ移動し得るよ
うになっている。又、風箱８の前記ガイドチューブ２８
貫通部には、該ガイドチューブ２８を摺動自在に且つ気
密に支持するグランドシール３４を取り付けてある。Since the gas burner moving mechanism 27 in the example of FIG. 5 does not have the inner cylinder 22 of the pulverized coal burner 20, it surrounds the outer periphery of the plurality of spuds 6 and connects the plurality of spuds 6 to each other. The guide tube 28 is disposed on the outer surface of the wind box 8. The guide tube 28 is disposed between the guide tube 28 and the support bracket 25 projecting from the outside of the wind box 8, and the guide tube 28 is supported movably in the axial direction with respect to the support bracket 25. A drive unit 31 such as an air cylinder for providing the guide member 30 and for moving the guide tube 28 in the axial direction on the support bracket 25 ′ protruding from the outside of the wind box 8.
Is installed, and the gas burner 7 can be moved in the axial direction by the expansion and contraction operation of the drive device 31. Further, the guide tube 28 of the wind box 8
A gland seal 34 that slidably and airtightly supports the guide tube 28 is attached to the penetrating portion.

【００３３】図５に示す例においては、ガスバーナ７を
使用する際には、ガスバーナ７の各スパッド６を燃焼時
前進位置Ａに配置すると共に、燃焼空気を風箱８からア
ウタベーン９とインナベーン１４とを介して旋回力を与
えつつ燃焼空気通路１２と燃焼空気通路１３とに導入し
た状態で、バルブ１６を開くと、燃料ガスが燃料ガス供
給ヘッダ１７から各スパッド６へ供給されて先端部の燃
料ガス噴出孔１８から噴出され、該燃料ガスと前記燃焼
空気とが混合され、図示していない点火トーチによる着
火により、火炉１内において燃料ガスの燃焼が行われる
一方、前記ガスバーナ７の消火時には、ガスバーナ移動
機構２７の駆動装置３１を伸長せしめると、ガイドチュ
ーブ２８が内部ガイド部材２９と外部ガイド部材３０と
によって支持されつつ後退し、ガイドチューブ２８と一
緒に各スパッド６が消火時後退位置Ｂに後退するため、
この状態で、油バーナ２３が使用され、燃料油の燃焼が
行われたとしても、前記ガスバーナ７の各スパッド６の
先端部が熱によって損耗したりすることはなく、又、各
スパッド６内に燃焼排ガスが入り込むこともほとんどな
くなり、各スパッド６が閉塞する心配もなくなる。In the example shown in FIG. 5, when the gas burner 7 is used, each spud 6 of the gas burner 7 is arranged at the forward position A during combustion, and the combustion air is fed from the wind box 8 to the outer vane 9 and the inner vane 14. When the valve 16 is opened while being introduced into the combustion air passage 12 and the combustion air passage 13 while giving a swirling force via the fuel gas, the fuel gas is supplied from the fuel gas supply header 17 to the respective spuds 6 and the fuel at the tip portion is supplied. The fuel gas is ejected from the gas ejection holes 18, the fuel gas and the combustion air are mixed, and the fuel gas is burned in the furnace 1 by ignition by an ignition torch (not shown), while the gas burner 7 is extinguished. When the drive device 31 of the gas burner moving mechanism 27 is extended, the guide tube 28 is supported by the inner guide member 29 and the outer guide member 30. One receding, because each spud 6 together with the guide tube 28 is retracted to the extinguishing time of the retracted position B,
In this state, even if the oil burner 23 is used and the fuel oil is burned, the tip of each spud 6 of the gas burner 7 is not worn by heat, and the inside of each spud 6 is not damaged. Almost no combustion exhaust gas enters, and there is no concern that each spud 6 will be blocked.

【００３４】こうして、図５に示す例の場合にも、ガス
バーナ７の消火時におけるスパッド６先端部の損耗や閉
塞を防止し得る。In this way, even in the case of the example shown in FIG. 5, it is possible to prevent the tip portion of the spud 6 from being worn or blocked when the gas burner 7 is extinguished.

【００３５】尚、本発明のバーナ装置は、上述の図示例
にのみ限定されるものではなく、本発明の要旨を逸脱し
ない範囲内において種々変更を加え得ることは勿論であ
る。The burner device of the present invention is not limited to the above-mentioned illustrated example, and it goes without saying that various modifications can be made without departing from the scope of the present invention.

【００３６】[0036]

【発明の効果】以上、説明したように本発明のバーナ装
置によれば、ガスバーナの消火時におけるスパッド先端
部の損耗や閉塞を防止し得るという優れた効果を奏し得
る。As described above, according to the burner device of the present invention, it is possible to obtain an excellent effect that the wear and the blockage of the tip of the spud at the time of extinguishing the gas burner can be prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明を実施する形態の一例の側断面図であ
る。FIG. 1 is a side sectional view of an example of an embodiment for carrying out the present invention.

【図２】図１のＩＩ−ＩＩ断面図である。FIG. 2 is a sectional view taken along line II-II of FIG.

【図３】図２のＩＩＩ−ＩＩＩ矢視相当図である。FIG. 3 is a view corresponding to the view taken along the line III-III in FIG. 2;

【図４】図１のＩＶ−ＩＶ断面図である。FIG. 4 is a sectional view taken along line IV-IV of FIG. 1;

【図５】本発明を実施する形態の他の例の側断面図であ
る。FIG. 5 is a side sectional view of another example of the embodiment for carrying out the present invention.

【図６】従来例の側断面図である。FIG. 6 is a side sectional view of a conventional example.

【図７】図６のＶＩＩ−ＶＩＩ矢視図である。FIG. 7 is a view taken along the line VII-VII in FIG. 6;

【図８】スパッドの先端部を表す断面図である。FIG. 8 is a cross-sectional view showing a tip portion of a spud.

【符号の説明】[Explanation of symbols]

１ 火炉 ２ バーナスロート部 ６ スパッド ７ ガスバーナ ８ 風箱 ２０ 微粉炭バーナ ２１ 外筒 ２２ 内筒 ２３ 油バーナ ２５ 支持ブラケット ２７ ガスバーナ移動機構 ２８ ガイドチューブ ２９ 内部ガイド部材 ３０ 外部ガイド部材 ３１ 駆動装置 Ａ 燃焼時前進位置 Ｂ 消火時後退位置 1 Fire Furnace 2 Burner Throat 6 Spud 7 Gas Burner 8 Wind Box 20 Pulverized Coal Burner 21 Outer Cylinder 22 Inner Cylinder 23 Oil Burner 25 Support Bracket 27 Gas Burner Moving Mechanism 28 Guide Tube 29 Inner Guide Member 30 External Guide Member 31 Drive Unit A During Combustion Forward position B Back position when extinguishing fire

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 燃焼空気を供給する風箱が取り付けられ
た火炉のバーナスロート部に、風箱を貫通して略同心状
に延びるよう外筒と内筒とを配設してなり、且つ前記外
筒と内筒との間に微粉炭が供給されて先端開口部から噴
出される微粉炭バーナと、 該微粉炭バーナの内筒内に略同心状に延びるよう配設さ
れ、且つ燃料油が供給される油バーナと、 前記微粉炭バーナの内筒内における油バーナ外周位置
に、該油バーナと略平行に延び且つ燃料ガスが供給され
る複数本のスパッドを配設してなるガスバーナとを備え
たバーナ装置において、 ガスバーナを微粉炭バーナの内筒と油バーナに対し軸心
方向へ移動自在に配設すると共に、該ガスバーナを燃焼
時前進位置と消火時後退位置との間で移動せしめるガス
バーナ移動機構を具備したことを特徴とするバーナ装
置。1. An outer cylinder and an inner cylinder are arranged in a burner throat portion of a furnace to which a wind box for supplying combustion air is attached so as to extend through the wind box and extend substantially concentrically. A pulverized coal burner in which pulverized coal is supplied between the outer cylinder and the inner cylinder and is ejected from the tip opening portion, and a pulverized coal burner arranged so as to extend substantially concentrically in the inner cylinder of the pulverized coal burner An oil burner to be supplied and a gas burner in which a plurality of spuds, which extend substantially parallel to the oil burner and are supplied with fuel gas, are arranged at an outer peripheral position of the oil burner in the inner cylinder of the pulverized coal burner. In a burner device provided with the gas burner, the gas burner is movably arranged in the axial direction with respect to the inner cylinder of the pulverized coal burner and the oil burner, and the gas burner is moved between a forward position during combustion and a backward position during extinction. Characterized by having a moving mechanism Burner device. 【請求項２】 ガスバーナ移動機構を、 複数本のスパッドの外周を包囲し且つ複数本のスパッド
を連結するように微粉炭バーナの内筒内に配設されるガ
イドチューブと、 該ガイドチューブと微粉炭バーナの内筒との間に配設さ
れ、且つガイドチューブを微粉炭バーナの内筒に対し軸
心方向へ移動自在に支持する内部ガイド部材と、 前記ガイドチューブと風箱外部から突設された支持ブラ
ケットとの間に配設され、且つガイドチューブを支持ブ
ラケットに対し軸心方向へ移動自在に支持する外部ガイ
ド部材と、 前記ガイドチューブを軸心方向へ移動せしめる駆動装置
とから構成した請求項１記載のバーナ装置。2. A guide tube for arranging a gas burner moving mechanism in an inner cylinder of a pulverized coal burner so as to surround an outer periphery of a plurality of spuds and connect the plurality of spuds, the guide tube and the fine powder. An internal guide member that is arranged between the inner tube of the charcoal burner and supports the guide tube so as to be movable in the axial direction with respect to the inner tube of the pulverized coal burner; An external guide member which is disposed between the support bracket and the support bracket and supports the guide tube so as to be movable in the axial direction with respect to the support bracket; and a drive device which moves the guide tube in the axial direction. Item 1. The burner device according to item 1. 【請求項３】 燃焼空気を供給する風箱が取り付けられ
た火炉のバーナスロート部に、風箱を貫通して延びるよ
う配設され、且つ燃料油が供給される油バーナと、 該油バーナ外周位置に、風箱を貫通して油バーナと略平
行に延び且つ燃料ガスが供給される複数本のスパッドを
配設してなるガスバーナとを備えたバーナ装置におい
て、 ガスバーナを油バーナに対し軸心方向へ移動自在に配設
すると共に、該ガスバーナを燃焼時前進位置と消火時後
退位置との間で移動せしめるガスバーナ移動機構を具備
したことを特徴とするバーナ装置。3. An oil burner, which is arranged so as to extend through the wind box and is supplied with fuel oil, in a burner throat portion of a furnace to which a wind box for supplying combustion air is attached, and an outer periphery of the oil burner. In a burner device provided with a plurality of spuds, each of which extends through the wind box substantially in parallel with the oil burner and is supplied with fuel gas, at a position, the gas burner has an axial center with respect to the oil burner. A burner device comprising a gas burner moving mechanism that is arranged so as to be movable in any direction, and that moves the gas burner between a forward position during combustion and a backward position during fire extinguishing. 【請求項４】 ガスバーナ移動機構を、 複数本のスパッドの外周を包囲し且つ複数本のスパッド
を連結するように配設されるガイドチューブと、 該ガイドチューブと風箱外部から突設された支持ブラケ
ットとの間に配設され、且つガイドチューブを支持ブラ
ケットに対し軸心方向へ移動自在に支持する外部ガイド
部材と、 前記ガイドチューブを軸心方向へ移動せしめる駆動装置
とから構成した請求項３記載のバーナ装置。4. A guide tube for arranging the gas burner moving mechanism so as to surround the outer periphery of a plurality of spuds and connect the plurality of spuds, and a support projecting from the guide tube and the outside of the wind box. 4. An external guide member which is disposed between the bracket and supports the guide tube movably in the axial direction with respect to the support bracket, and a drive device which moves the guide tube in the axial direction. Burner device described.
JP34101695A 1995-12-27 1995-12-27 Burner equipment Expired - Lifetime JP3823353B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34101695A JP3823353B2 (en) 1995-12-27 1995-12-27 Burner equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34101695A JP3823353B2 (en) 1995-12-27 1995-12-27 Burner equipment

Publications (2)

Publication Number Publication Date
JPH09178111A true JPH09178111A (en) 1997-07-11
JP3823353B2 JP3823353B2 (en) 2006-09-20

Family

ID=18342441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34101695A Expired - Lifetime JP3823353B2 (en) 1995-12-27 1995-12-27 Burner equipment

Country Status (1)

Country Link
JP (1) JP3823353B2 (en)

Also Published As

Publication number Publication date
JP3823353B2 (en) 2006-09-20

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