CN201521977U - 燃煤机组负压烟道 - Google Patents

燃煤机组负压烟道 Download PDF

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Publication number
CN201521977U
CN201521977U CN2009202367289U CN200920236728U CN201521977U CN 201521977 U CN201521977 U CN 201521977U CN 2009202367289 U CN2009202367289 U CN 2009202367289U CN 200920236728 U CN200920236728 U CN 200920236728U CN 201521977 U CN201521977 U CN 201521977U
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flue
negative pressure
coal
fired unit
cylindrical shape
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Expired - Fee Related
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CN2009202367289U
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English (en)
Inventor
潘灏
霍沛强
李伟科
范永春
王观华
周锐
樊晓茹
尹进
宁继宏
姚友江
刘堂礼
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China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
Huaneng Power International Inc
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Guangdong Electric Power Design Institute
Huaneng Power International Inc
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Priority to CN2009202367289U priority Critical patent/CN201521977U/zh
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Abstract

本实用新型公开了一种燃煤机组负压烟道，该负压烟道为圆筒形而使该烟道的横截面呈圆环状，在所述圆筒形烟道的外表面上设有环形加固筋。该烟道的承压能力强，制造成本低。

Description

燃煤机组负压烟道
技术领域
本实用新型涉及一种燃煤机组负压烟道。
背景技术
现有的燃煤机组负压烟道的横载面为矩形，由于矩形烟道的壁板不但需要承受压力，还需承受弯矩，其承压能力不强，需要在矩形烟道内设有内撑杆，以提高烟道壁板的强度，但经过长期使用之后，烟气中的粉尘会对烟道的内撑杆造成磨损，影响烟道的使用寿命，其次，烟道采用矩形结构，烟道壁板的用材量较大，不利于节省成本。
发明内容
本实用新型的目的在于克服现有技术的缺陷，提供一种燃煤机组负压烟道，该烟道的承压能力强，制造成本低。
其技术方案如下：
一种燃煤机组负压烟道，该负压烟道为圆筒形而使该烟道的横截面呈圆环状。
本实用新型所述烟道采用圆筒形结构，在负压情况下，壁板只承受压力而不承受弯矩，提高了负压烟道的承压能力；其次，由于圆形烟道壁板不需承受弯矩，所以可以省去原的有内撑杆；再次，由于烟道的横截面为圆环形，在具有同样流通面积的情况下，圆筒形烟道的壁板用料可以节省12％以上。
前述技术方案进一步细化的技术方案可以是：
在所述圆筒形烟道上设有环形加固筋。通过该加固筋可以进一步提高圆筒形负压烟道的强度，具体而言，所述环形加固筋设于所述圆筒形烟道的外表面上。
综上所述，本实用新型的优点是：采用圆筒形的负压烟道，承压能力强，制造成本低。
附图说明
下面结合附图对本实用新型的实施例进行详细说明：
图1是本实用新型实施例的端部视图；
图2是本实用新型实施例的侧视图；
附图标记说明：
1、烟道，2、加固筋。
具体实施方式
如图1、图2所示，一种燃煤机组负压烟道，该负压烟道为圆筒形而使该烟道的横截面呈圆环状，在所述圆筒形烟道的外表面上设有环形加固筋。
本实施例所述烟道采用圆筒形结构，可以采用薄钢板卷制而成；在负压情况下，壁板只承受压力而不承受弯矩，提高了负压烟道的承压能力；其次，由于圆形烟道壁板不需承受弯矩，所以可以省去原的有内撑杆；再次，由于烟道的横截面为圆环形，在具有同样流通面积的情况下，圆筒形烟道的壁板用料可以节省12％以上。
以上仅为本实用新型的具体实施例，并不以此限定本实用新型的保护范围；在不违反本实用新型构思的基础上所作的任何替换与改进，均属本实用新型的保护范围。

Claims (3)

1.一种燃煤机组负压烟道，其特征在于，该负压烟道为圆筒形而使该烟道的横截面呈圆环状。
2.如权利要求1所述燃煤机组负压烟道，其特征在于，在所述圆筒形烟道上设有环形加固筋。
3.如权利要求2所述燃煤机组负压烟道，其特征在于，所述环形加固筋设于所述圆筒形烟道的外表面上。
CN2009202367289U 2009-09-30 2009-09-30 燃煤机组负压烟道 Expired - Fee Related CN201521977U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202367289U CN201521977U (zh) 2009-09-30 2009-09-30 燃煤机组负压烟道

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202367289U CN201521977U (zh) 2009-09-30 2009-09-30 燃煤机组负压烟道

Publications (1)

Publication Number Publication Date
CN201521977U true CN201521977U (zh) 2010-07-07

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Country Status (1)

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Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC

Free format text: FORMER NAME: GUANGDONG ELECTRIC POWER DESIGN INSTITUTE

CP03 Change of name, title or address

Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No.

Patentee after: Guangdong Electric Power Design Institute of CEEC

Patentee after: Huaneng Power International, Inc.

Address before: 510600 No. 846 Dongfeng East Road, Guangzhou, Guangdong, Yuexiu District

Patentee before: Guangdong Electric Power Design Institute

Patentee before: Huaneng Power International, Inc.

C56 Change in the name or address of the patentee

Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC

Free format text: FORMER NAME: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE

CP01 Change in the name or title of a patent holder

Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No.

Patentee after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute

Patentee after: Huaneng Power International, Inc.

Address before: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No.

Patentee before: Guangdong Electric Power Design Institute of CEEC

Patentee before: Huaneng Power International, Inc.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100707

Termination date: 20160930