WO2010081273A1 - Small air box of combustor - Google Patents

Small air box of combustor Download PDF

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Publication number
WO2010081273A1
WO2010081273A1 PCT/CN2009/001052 CN2009001052W WO2010081273A1 WO 2010081273 A1 WO2010081273 A1 WO 2010081273A1 CN 2009001052 W CN2009001052 W CN 2009001052W WO 2010081273 A1 WO2010081273 A1 WO 2010081273A1
Authority
WO
WIPO (PCT)
Prior art keywords
bellows
small
burner
air chamber
small bellows
Prior art date
Application number
PCT/CN2009/001052
Other languages
French (fr)
Chinese (zh)
Original Assignee
上海锅炉厂有限公司
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 上海锅炉厂有限公司 filed Critical 上海锅炉厂有限公司
Publication of WO2010081273A1 publication Critical patent/WO2010081273A1/en
Priority to ZA2011/00734A priority Critical patent/ZA201100734B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/02—Disposition of air supply not passing through burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/008—Flow control devices

Definitions

  • the utility model relates to a small bellows for a burner, belonging to the technical field of windboxes. Background technique
  • the main burner of each corner adopts a structure of a large wind box, and all of the primary and secondary air are arranged in the air chamber of the large wind box.
  • a disadvantage of the structure of such a large windbox is that it is difficult to resolve the differential expansion between the different layers of the burner bellows, and the total secondary air flow at each corner cannot be individually controlled and adjusted.
  • the technical solution of the present invention provides a burner small bellows, characterized in that it is composed of at least one small wind box, and a primary air nozzle and a secondary air nozzle can be arranged at the furnace side outlet of the small air box. On the other side, there is a secondary damper corresponding to the nozzle.
  • the primary air nozzle and the secondary air nozzle are prior art and are not devices provided by the present invention.
  • the small bellows are at least two, and a bellows spacing between the two small bellows for ensuring the passage of the water wall tube is left.
  • the small bellows includes at least one primary air chamber and at least one secondary air chamber.
  • the primary air chamber and the secondary air chamber are arranged at intervals or adjacent to each other.
  • a partition is provided between the primary air chamber and the secondary air chamber.
  • the furnace side of the small bellows is inclined structure with the same angle as the water wall of the combustion area of the boiler, and the inclination angle ⁇ is 0 ⁇ ⁇ 90°, and the protruding part of the furnace outside the small bellows is changed from the inclined structure to the horizontal structure. .
  • the utility model has the advantages of more reasonable solution to the difference in expansion between different layers of the burner bellows, so that the total air volume and the air volume of each layer can be separately controlled and adjusted, and the structure of the small bellows also makes the lifting and installation of the site more. Convenience. DRAWINGS
  • Fig. 1 is a schematic view showing the structure of a small bellows of a burner with four small bellows provided by the utility model.
  • Fig. 2 is a schematic view showing the structure of a small bellows of a burner with three small bellows provided by the utility model. detailed description
  • a schematic diagram of a small bellows structure of a burner with four small bellows provided by the utility model comprises four small bellows 1, a primary air chamber 2, a secondary air chamber 3, and a secondary air door. 4.
  • the partition 5 and the bellows spacing 6 are composed.
  • a certain bellows spacing 6 is maintained between adjacent small bellows 1 to ensure the passage of the water wall tube.
  • the following three small bellows 1 are composed of two primary air chambers 2 and two secondary air chambers 3; the uppermost small bellows 1 is composed of a primary air chamber 2 and two secondary air chambers 3.
  • Each of the plenums is separated by a partition 5 in which the primary plenum 2 and the secondary plenum 3 are spaced apart.
  • the whole small bellows 1 is all formed by splicing steel plates.
  • the primary air nozzle and the secondary air nozzle can be fixed at the exit of the small bellows 1 on the furnace side, and the secondary damper 4 corresponding to each nozzle is arranged on the other side; the small bellows 1 furnace side
  • the inclined structure with the same angle as the water wall is adopted, and the inclination angle ⁇ is 25°, and the protruding portion of the furnace outside the furnace of the small bellows 1 gradually changes from the inclined structure to the horizontal structure.
  • the burner bellows provided by the embodiment are arranged at four corners of a certain height of the furnace.
  • Example 2
  • FIG. 2 is a schematic structural view of a small bellows of a burner having three small bellows provided by the present invention.
  • the difference between this embodiment and the embodiment 1 is that the small bellows 1 are three and the top one is
  • the small bellows 1 is composed of two primary air chambers 2 and three secondary air chambers 3, and the other structure is the same as that of the first embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Gas Burners (AREA)

Abstract

A small air box of combustor includes at least a small air box (1). The small air box (1) is equipped with primary air nozzles and secondary air nozzles at its outlet on its boiler chamber side, and is equipped with corresponding secondary air dampers (4) to the nozzles on the other side. The small air box of combustor solves expanding difference problem, makes total air quantity and air quantity of each layer can be controlled and regulated and makes hoisting and installation easy.

Description

燃烧器小风箱  Burner bellows
技术领域 Technical field
本实用新型涉及一种燃烧器小风箱， 属于风箱技术领域。 背景技术  The utility model relates to a small bellows for a burner, belonging to the technical field of windboxes. Background technique
传统的锅炉每个角主燃烧器采用一个大风箱的结构，所有一，二次风均间隔 排列在大风箱的风室中。这种大风箱的结构的缺点是很难解决燃烧器风箱不同层 之间的胀差， 且每角总的二次风流量不能单独控制和调节。 发明内容  In the traditional boiler, the main burner of each corner adopts a structure of a large wind box, and all of the primary and secondary air are arranged in the air chamber of the large wind box. A disadvantage of the structure of such a large windbox is that it is difficult to resolve the differential expansion between the different layers of the burner bellows, and the total secondary air flow at each corner cannot be individually controlled and adjusted. Summary of the invention
本实用新型的目的是提供一种解决燃烧器风箱不同层之间的胀差，且每角总 的二次风流量能单独控制和调节的燃烧器小风箱。  It is an object of the present invention to provide a burner bellows that addresses the differential expansion between different layers of the burner bellows and that can be individually controlled and regulated by the total secondary air flow at each corner.
为了达到上述目的，本实用新型的技术方案是提供了一种燃烧器小风箱，其 特征在于， 由至少一个小风箱组成，在小风箱的炉膛侧出口处可以装置一次风喷 嘴和二次风喷嘴，另一侧设有与喷嘴对应的二次风门。一次风喷嘴和二次风喷嘴 为现有技术， 不属于本实用新型提供的装置。  In order to achieve the above object, the technical solution of the present invention provides a burner small bellows, characterized in that it is composed of at least one small wind box, and a primary air nozzle and a secondary air nozzle can be arranged at the furnace side outlet of the small air box. On the other side, there is a secondary damper corresponding to the nozzle. The primary air nozzle and the secondary air nozzle are prior art and are not devices provided by the present invention.
进一步，所述小风箱为至少两个，在任意两个小风箱之间留有用来保证水冷 壁管子穿出的风箱间距。所述小风箱包括至少一个一次风风室和至少一个二次风 风室。所述一次风风室和二次风风室间隔排列或相邻排列。在所述一次风风室和 所述二次风风室之间设有隔板。所述小风箱的炉膛侧为与锅炉燃烧区域水冷壁角 度相同的倾斜结构， 其倾斜角度 α为 0< α <90° ， 在小风箱炉膛侧向炉外伸出 段由倾斜结构变为水平结构。  Further, the small bellows are at least two, and a bellows spacing between the two small bellows for ensuring the passage of the water wall tube is left. The small bellows includes at least one primary air chamber and at least one secondary air chamber. The primary air chamber and the secondary air chamber are arranged at intervals or adjacent to each other. A partition is provided between the primary air chamber and the secondary air chamber. The furnace side of the small bellows is inclined structure with the same angle as the water wall of the combustion area of the boiler, and the inclination angle α is 0<α <90°, and the protruding part of the furnace outside the small bellows is changed from the inclined structure to the horizontal structure. .
本实用新型的优点是更加合理的解决燃烧器风箱不同层之间的胀差，使总的 风量和每层风量均可以单独控制和调节，同时小风箱的结构也使工地现场的起吊 和安装更加方便。 附图说明 The utility model has the advantages of more reasonable solution to the difference in expansion between different layers of the burner bellows, so that the total air volume and the air volume of each layer can be separately controlled and adjusted, and the structure of the small bellows also makes the lifting and installation of the site more. Convenience. DRAWINGS
图 1为本实用新型提供的一种具有四个小风箱的燃烧器小风箱结构示意图 r 图 2为本实用新型提供的一种具有三个小风箱的燃烧器小风箱结构示意图。 具体实施方式 Fig. 1 is a schematic view showing the structure of a small bellows of a burner with four small bellows provided by the utility model. Fig. 2 is a schematic view showing the structure of a small bellows of a burner with three small bellows provided by the utility model. detailed description
以下结合实施例来具体说明本实用新型。  The present invention will be specifically described below in conjunction with the embodiments.
实施例 1 Example 1
如图 1所示，为本实用新型提供的一种具有四个小风箱的燃烧器小风箱结构 示意图， 由四个小风箱 1、 一次风风室 2、 二次风风室 3、 二次风门 4、 隔板 5 及风箱间距 6组成。  As shown in FIG. 1 , a schematic diagram of a small bellows structure of a burner with four small bellows provided by the utility model comprises four small bellows 1, a primary air chamber 2, a secondary air chamber 3, and a secondary air door. 4. The partition 5 and the bellows spacing 6 are composed.
相邻小风箱 1之间保持一定的风箱间距 6以保证水冷壁管子的穿出。下面三 个小风箱 1均由两个一次风风室 2和两个二次风风室 3组成；最上面一个小风箱 1由一个一次风风室 2和两个二次风风室 3组成。 每个风室通过隔板 5隔开， 其 中一次风风室 2和二次风风室 3间隔排列。 整个小风箱 1全部由钢板拼接而成， 一次风喷嘴、二次风喷嘴可以固定在炉膛侧小风箱 1出口处， 另一侧布置与每个 喷嘴对应的二次风门 4; 小风箱 1炉膛侧采用与水冷壁角度相同的倾斜结构， 且 倾斜角度 α为 25° ， 在小风箱 1炉膛侧向炉外伸出段由倾斜结构逐渐变为水平 结构。  A certain bellows spacing 6 is maintained between adjacent small bellows 1 to ensure the passage of the water wall tube. The following three small bellows 1 are composed of two primary air chambers 2 and two secondary air chambers 3; the uppermost small bellows 1 is composed of a primary air chamber 2 and two secondary air chambers 3. Each of the plenums is separated by a partition 5 in which the primary plenum 2 and the secondary plenum 3 are spaced apart. The whole small bellows 1 is all formed by splicing steel plates. The primary air nozzle and the secondary air nozzle can be fixed at the exit of the small bellows 1 on the furnace side, and the secondary damper 4 corresponding to each nozzle is arranged on the other side; the small bellows 1 furnace side The inclined structure with the same angle as the water wall is adopted, and the inclination angle α is 25°, and the protruding portion of the furnace outside the furnace of the small bellows 1 gradually changes from the inclined structure to the horizontal structure.
使用时， 将本实施例提供的燃烧器小风箱布置在炉膛一定高度的四个角上。 实施例 2  In use, the burner bellows provided by the embodiment are arranged at four corners of a certain height of the furnace. Example 2
如图 2所示，为本实用新型提供的一种具有三个小风箱的燃烧器小风箱结构 示意图， 本实施例与实施例 1不同之处在于， 小风箱 1为三个， 且最上面一个小 风箱 1由两个一次风风室 2和三个二次风风室 3组成，其他结构与实施例 1相同。  FIG. 2 is a schematic structural view of a small bellows of a burner having three small bellows provided by the present invention. The difference between this embodiment and the embodiment 1 is that the small bellows 1 are three and the top one is The small bellows 1 is composed of two primary air chambers 2 and three secondary air chambers 3, and the other structure is the same as that of the first embodiment.

Claims

权利要求： Rights request:
1. 一种燃烧器小风箱， 其特征在于， 由至少一个小风箱 （1) 组成， 在小风箱 A burner bellows characterized in that it consists of at least one small bellows (1) in a small bellows
(1) 的炉膛侧出口处可以用来装置一次风喷嘴和二次风喷嘴， 另一侧设有 与喷嘴对应的二次风门 （4)。 The furnace side outlet of (1) can be used to install the primary air nozzle and the secondary air nozzle, and the other side is provided with a secondary damper (4) corresponding to the nozzle.
2. 如权利要求 1所述的一种燃烧器小风箱， 其特征在于， 所述小风箱 （1) 为 至少两个， 在任意两个小风箱 （1) 之间留有用来保证水冷壁管子穿出的风 箱间距 （6)。  2. A burner bellows according to claim 1, wherein said small bellows (1) are at least two, and between any two small bellows (1) is provided for ensuring a water-cooled wall pipe The bellows spacing (6).
3. 如权利要求 1所述的一种燃烧器小风箱， 其特征在于， 所述小风箱 （1) 包 括至少一个一次风风室 （2) 和至少一个二次风风室 （3)。  3. A burner bellows according to claim 1, characterized in that said small bellows (1) comprises at least one primary air chamber (2) and at least one secondary air chamber (3).
4. 如权利要求 2所述的一种燃烧器小风箱， 其特征在于， 所述一次风风室 （2) 和二次风风室 （3) 间隔排列或相邻排列。  4. A burner bellows according to claim 2, wherein said primary air chamber (2) and secondary air chamber (3) are spaced apart or adjacently arranged.
5. 如权利要求 2所述的一种燃烧器小风箱，其特征在于，在所述一次风风室（2) 和所述二次风风室 （3) 之间设有隔板 （5)。  5. A burner bellows according to claim 2, wherein a partition (5) is provided between the primary air chamber (2) and the secondary air chamber (3) .
6. 如权利要求 1所述的一种燃烧器小风箱， 其特征在于， 所述小风箱 （1) 的 炉膛侧为与锅炉燃烧区域水冷壁角度相同的倾斜结构， 其倾斜角度 α为 0< α <90° ， 在小风箱 （1) 炉膛侧向炉外伸出段由倾斜结构变为水平结构。  6. The burner bellows according to claim 1, wherein the furnace side of the small bellows (1) has the same inclined structure as the water wall of the combustion zone of the boiler, and the inclination angle α is 0< α <90°, in the small bellows (1), the lateral extension of the furnace to the outside of the furnace changes from a sloping structure to a horizontal structure.
PCT/CN2009/001052 2008-12-30 2009-09-21 Small air box of combustor WO2010081273A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2011/00734A ZA201100734B (en) 2008-12-30 2011-01-28 A small windbox for burner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200820208590.7 2008-12-30
CN200820208590U CN201387021Y (en) 2008-12-30 2008-12-30 Small bellows of burner

Publications (1)

Publication Number Publication Date
WO2010081273A1 true WO2010081273A1 (en) 2010-07-22

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PCT/CN2009/001052 WO2010081273A1 (en) 2008-12-30 2009-09-21 Small air box of combustor

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CN (1) CN201387021Y (en)
CL (1) CL2011000204U1 (en)
TR (1) TR201100805T1 (en)
WO (1) WO2010081273A1 (en)
ZA (1) ZA201100734B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112577062A (en) * 2020-11-26 2021-03-30 华能巢湖发电有限责任公司 Secondary air box ash conveying device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1110880A (en) * 1993-05-13 1995-10-25 燃烧工程有限公司 Integrted low NOx tangential firing system
CN2295126Y (en) * 1995-11-30 1998-10-21 内蒙古自治区电力试验研究所 Secondary-wind distributing device of square tube cluster structure
JPH1163478A (en) * 1997-08-27 1999-03-05 Babcock Hitachi Kk Wind box for combustion air, supporting device for wind box and holder member
CN101135451A (en) * 2006-08-29 2008-03-05 上海理工大学 Gas recombustion and two-channel thick-light integrated type low NOx combusting device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1110880A (en) * 1993-05-13 1995-10-25 燃烧工程有限公司 Integrted low NOx tangential firing system
CN2295126Y (en) * 1995-11-30 1998-10-21 内蒙古自治区电力试验研究所 Secondary-wind distributing device of square tube cluster structure
JPH1163478A (en) * 1997-08-27 1999-03-05 Babcock Hitachi Kk Wind box for combustion air, supporting device for wind box and holder member
CN101135451A (en) * 2006-08-29 2008-03-05 上海理工大学 Gas recombustion and two-channel thick-light integrated type low NOx combusting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112577062A (en) * 2020-11-26 2021-03-30 华能巢湖发电有限责任公司 Secondary air box ash conveying device
CN112577062B (en) * 2020-11-26 2024-02-23 华能巢湖发电有限责任公司 Ash conveying device for secondary air box

Also Published As

Publication number Publication date
ZA201100734B (en) 2011-10-26
CN201387021Y (en) 2010-01-20
TR201100805T1 (en) 2011-10-21
CL2011000204U1 (en) 2011-08-26

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