WO2019010589A1 - 一种可扫灰的低温省煤装置 - Google Patents

一种可扫灰的低温省煤装置 Download PDF

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Publication number
WO2019010589A1
WO2019010589A1 PCT/CN2017/000430 CN2017000430W WO2019010589A1 WO 2019010589 A1 WO2019010589 A1 WO 2019010589A1 CN 2017000430 W CN2017000430 W CN 2017000430W WO 2019010589 A1 WO2019010589 A1 WO 2019010589A1
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Prior art keywords
wire brush
ash
heat
housing
heat exchange
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PCT/CN2017/000430
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English (en)
French (fr)
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王亚娟
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王亚娟
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Priority to PCT/CN2017/000430 priority Critical patent/WO2019010589A1/zh
Publication of WO2019010589A1 publication Critical patent/WO2019010589A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/02Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/02Cleaning furnace tubes; Cleaning flues or chimneys

Definitions

  • the utility model relates to the field of recycling and utilization of boiler exhaust heat energy, in particular to a low-temperature coal-saving device capable of sweeping ash.
  • the smoke loss is the most important heat loss in boiler operation, accounting for 60%-70% of the boiler heat loss.
  • the boiler exhaust gas temperature for burning anthracite, lean coal and bituminous coal is usually designed to be 120-130 °C.
  • the design value of the exhaust gas temperature of lignite boiler is usually around 155 °C, and the actual exhaust gas temperature of boilers in China's thermal power plants is mostly higher than the design value.
  • the utility model provides a low-temperature coal-saving device capable of sweeping dust, which increases the reuse of exhaust heat of the exhaust gas, and the system device has good working performance, and the dust can be completely brushed off easily, which is not easy to be dirty and corroded.
  • the heat exchange is good.
  • the utility model relates to a low-temperature coal-saving device capable of sweeping ash, which comprises a casing, a heat exchange tube bundle, a dust sweeping device, a water inlet and a water outlet, wherein the heat exchanger tube bundle is arranged in the shell, and the water inlet and the water outlet are installed outside the shell and The heat exchange tube bundle is connected, the dust sweeping device is installed at the upper end of the casing, the sweeping device comprises a cylinder mechanism, a transition plate, a wire brush, and the wire brush has two rows on both sides of the heat exchange tube bundle, and the brush of the wire brush is installed toward the heat exchange tube bundle and
  • the heat exchange tube bundles are in contact with each other, and the upper end of each wire brush is connected to the lower end of the transition plate through two connecting rods, and the upper side of the transition plate is connected with the cylinder mechanism, the lower end of the casing is designed as a trapezoidal shape groove, and the cleaning door is designed on one side of the groove.
  • the wire brush is made of a copper metal material.
  • the wire brush is a single-sided brush or a double-sided brush.
  • the utility model has the advantages that the design is reasonable, the design of the ash cleaning device of the low-temperature economizer can effectively clean the ash on the heat exchange tube bundle, and the ash is controlled by the cylinder control wire brush without manual removal and cleaning, thereby greatly improving the system device.
  • the benefit is increased; the ladder shape groove is designed under the shell to facilitate the collection of dust accumulation, and the manual can be cleaned by cleaning the door.
  • Figure 1 is a front elevational view of the present invention.
  • Figure 2 is a side elevational view of the present invention.
  • a dust-removable low-temperature coal-saving device includes a casing 1, a heat exchange tube bundle 2, a sweeping device 3, a water inlet 4, and a water outlet 5, and the housing 1 is provided with heat exchange.
  • the tube bundle 2, the water inlet 4 and the water outlet 5 are mounted outside the casing 1 and connected to the heat exchange tube bundle 2, and the dust sweeping device 3 is mounted on the upper end of the casing 1.
  • the sweeping device 3 includes a cylinder mechanism 31, a transition plate 32, and a wire brush. 33.
  • the wire brush 33 has two rows on both sides of the heat exchange tube bundle 2.
  • the brush of the wire brush 33 is mounted toward the heat exchange tube bundle 2 and is in contact with the heat exchange tube bundle 2, and the upper end of each wire brush 33 is connected by two links 34.
  • the upper side of the transition plate 32 is connected to the cylinder mechanism 31, the lower end of the casing 1 is designed as a trapezoidal shaped groove 6, and the cleaning door 7 is designed on one side of the recess 6.
  • the wire brush 33 is made of a copper metal material.
  • the strength of the wire brush made of copper does not damage the heat exchange tube bundle and also removes dust.
  • the wire brush 33 is a single-sided brush or a double-sided brush.
  • the flue gas inlet and outlet valves on both sides of the low-temperature coal-saving device are closed, and the flue gas is bypassed or passed through the standby low-temperature coal-saving device.
  • the transition plate is pushed by the cylinder mechanism, and the transition plate passes.
  • the connecting rod controls the wire brush to brush up and down on both sides of the heat exchange tube bundle to perform sweeping, and design the sweeping time according to the need.
  • the cylinder mechanism After the sweeping is completed, the cylinder mechanism returns to the original position to ensure that the wire brush is located on both sides of the upper end of the heat exchange tube bundle, Will affect the flow of smoke, wait for the internal dust to settle, open the cleaning door, clean up the dust, after cleaning, close the cleaning door, open the inlet and outlet valves on both sides, the smoke will enter the heat exchange tube bundle is very little floating
  • the ash is taken away together to increase the heat exchange efficiency of the heat exchange tube bundle, and is not corroded and dirty by the smoke material such as ash accumulation.
  • the heat exchange tube bundle described in the device has only two rows, and can be designed in multiple rows according to requirements, and then the number of the dust sweeping devices is correspondingly increased.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Incineration Of Waste (AREA)

Abstract

一种可扫灰的低温省煤装置,包括壳体(1)、换热管束(2)、扫灰装置(3)、进水口(4)和出水口(5),壳体(1)内装有换热管束(2),进水口(4)和出水口(5)装在壳体(1)外面且与换热管束(2)相连,扫灰装置(3)装在壳体(1)上端,扫灰装置(3)包括气缸机构(31)、过渡板(32)、钢丝刷(33),钢丝刷(33)有两排位于换热管束(2)两侧,钢丝刷(33)的刷子朝向换热管束(2)安装且与换热管束(2)相接触,每个钢丝刷(33)上端通过两个连杆(34)连接在过渡板(32)下端,过渡板(32)上面连接气缸机构(31),壳体(1)下端设计成梯形状凹槽(6),凹槽(6)的一侧面上设计有清理门(7)。优点是设计合理,通过气缸控制钢丝刷进行扫灰,无需人工拆除清理,大大提高系统装置对排烟余热的利用率,增加效益;壳体下面设计梯形状凹槽方便积灰的汇集,人工可以通过清理门进行清理。

Description

一种可扫灰的低温省煤装置 技术领域
本实用新型涉及锅炉排烟热能再回收利用领域,具体涉及一种可扫灰的低温省煤装置。
背景技术
目前排烟损失是锅炉运行中最重要的一项热损失,约占锅炉热损失的60%-70%,对燃烧无烟煤、贫煤、烟煤的锅炉排烟温度设计通常为120-130℃,燃烧褐煤的锅炉排烟温度设计值通常在155℃左右,且我国火力发电厂锅炉实际运行排烟温度大多高于设计值。为了减少排烟温度的损失,把排烟温度降低,提高电厂的经济性,目前有很多工程采用低温省煤器来利用排烟余热。但是低温省煤器的安装位置设计不好会造成低温省煤器装置内部腐蚀,脏堵,换热不好。目前大部分低温省煤器都采用压缩空气吹灰的方法,对其清理,但是这种只能对管束表面的积灰吹掉,一些粘结在管束并固化的积灰,无法吹掉。
发明内容
为了解决上述问题,本实用新型提出了一种可扫灰的低温省煤装置,增加对排烟余热再利用,系统装置工作性能好,可以方便的把积灰完全刷掉,不易脏堵,腐蚀,换热好。
一种可扫灰的低温省煤装置,它包括壳体、换热管束、扫灰装置、进水口和出水口,壳体内装有换热管束,进水口和出水口装在壳体外面且与换热管束相连,扫灰装置装在壳体上端,扫灰装置包括气缸机构、过渡板、钢丝刷,钢丝刷有两排位于换热管束两侧,钢丝刷的刷子朝向换热管束安装且与换热管束相接触,每个钢丝刷上端通过两个连杆连接在过渡板下端,过渡板上面连接气缸机构,壳体下端设计成梯形状凹槽,凹槽的一侧面上设计有清理门。
所述的钢丝刷采用铜金属材料制作。
所述的钢丝刷是单面刷或双面刷。
本实用新型的优点是设计合理,低温省煤器的扫灰装置的设计能够有效的清洁换热管束上的积灰,而且通过气缸控制钢丝刷进行扫灰,无需人工拆除清理,大大提高系统装置对排烟余热的利用率,增加效益;壳体下面设计梯形状凹槽方便积灰的汇集,人工可以通过清理门进行清理。
附图说明
图1是本实用新型的正视示意图。
图2是本实用新型的侧视示意图。
具体实施方式
为了对本实用新型进一步说明,下面结合说明书附图来介绍:
参照附图1和图2,一种可扫灰的低温省煤装置,它包括壳体1、换热管束2、扫灰装置3、进水口4和出水口5,壳体1内装有换热管束2,进水口4和出水口5装在壳体1外面且与换热管束2相连,扫灰装置3装在壳体1上端,扫灰装置3包括气缸机构31、过渡板32、钢丝刷33,钢丝刷33有两排位于换热管束2两侧,钢丝刷33的刷子朝向换热管束2安装且与换热管束2相接触,每个钢丝刷33上端通过两个连杆34连接在过渡板32下端,过渡板32上面连接气缸机构31,壳体1下端设计成梯形状凹槽6,凹槽6的一侧面上设计有清理门7。
所述的钢丝刷33采用铜金属材料制作。铜制作的钢丝刷的强度不会损害换热管束,还能去除积灰。
所述的钢丝刷33是单面刷或双面刷。
本装置使用时,关闭低温省煤装置两侧的烟气进出口阀门,让烟气旁通或从备用低温省煤装置通过,等待本装置冷却后,通过气缸机构推动推动过渡板,过渡板通过连杆控制钢丝刷对换热管束两侧进行上下刷动,进行扫灰,根据需要设计扫灰时间,扫灰结束后,气缸机构回复原位,保证钢丝刷位于换热管束上端两侧,不会影响烟气流通,等待内部灰尘沉淀后,打开清理门,把积灰清理掉,清理完毕后,关闭清理门,打开两侧进出口阀门,烟气进入会把换热管束上的极少浮灰一起带走,使换热管束换热效率增高,不会受积灰等烟气物质腐蚀和脏堵。本装置内所述的换热管束只有两排,可以根据需要设计成多排,然后对应增加扫灰装置的数量。为了防止本装置的连杆与壳体之间卡阻,我们可以在连杆与壳体之间设计密封润滑机构,防止连杆作用钢丝刷时卡阻。

Claims (3)

  1. 一种可扫灰的低温省煤装置,它包括壳体、换热管束、扫灰装置、进水口和出水口,其特征是壳体内装有换热管束,进水口和出水口装在壳体外面且与换热管束相连,扫灰装置装在壳体上端,扫灰装置包括气缸机构、过渡板、钢丝刷,钢丝刷有两排位于换热管束两侧,钢丝刷的刷子朝向换热管束安装且与换热管束相接触,每个钢丝刷上端通过两个连杆连接在过渡板下端,过渡板上面连接气缸机构,壳体下端设计成梯形状凹槽,凹槽的一侧面上设计有清理门。
  2. 根据权利要求1所述的锅炉排烟热回收减排系统装置,其特征是所述的钢丝刷采用铜金属材料制作。
  3. 根据权利要求1所述的锅炉排烟热回收减排系统装置,其特征是所述的钢丝刷是单面刷或双面刷。
PCT/CN2017/000430 2017-07-12 2017-07-12 一种可扫灰的低温省煤装置 WO2019010589A1 (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111780405A (zh) * 2020-07-21 2020-10-16 沈梁 一种环保节能型工业废气燃烧处理装置
CN115053829A (zh) * 2022-08-18 2022-09-16 山东尊润圣罗捷食品有限公司 一种家禽养殖用自动供暖设备

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JPH10176821A (ja) * 1996-12-13 1998-06-30 Mitsubishi Heavy Ind Ltd 脱硝装置付ボイラ
CN2644899Y (zh) * 2003-06-20 2004-09-29 沈国华 冷凝式省煤器
CN1851382A (zh) * 2006-05-18 2006-10-25 东北电力大学 刮灰废热回收省煤器
CN203810376U (zh) * 2014-04-21 2014-09-03 江苏力沛电力工程技术服务有限公司 一种可扫灰的低温省煤装置
CN204460171U (zh) * 2015-02-06 2015-07-08 王国栋 一种电厂锅炉低温省煤器
CN204513340U (zh) * 2015-03-13 2015-07-29 淄博金通电力科技有限公司 一种高效低温省煤器
CN205279117U (zh) * 2016-01-12 2016-06-01 山东华创节能环保科技有限公司 低温自动清灰烟气余热回收装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10176821A (ja) * 1996-12-13 1998-06-30 Mitsubishi Heavy Ind Ltd 脱硝装置付ボイラ
CN2644899Y (zh) * 2003-06-20 2004-09-29 沈国华 冷凝式省煤器
CN1851382A (zh) * 2006-05-18 2006-10-25 东北电力大学 刮灰废热回收省煤器
CN203810376U (zh) * 2014-04-21 2014-09-03 江苏力沛电力工程技术服务有限公司 一种可扫灰的低温省煤装置
CN204460171U (zh) * 2015-02-06 2015-07-08 王国栋 一种电厂锅炉低温省煤器
CN204513340U (zh) * 2015-03-13 2015-07-29 淄博金通电力科技有限公司 一种高效低温省煤器
CN205279117U (zh) * 2016-01-12 2016-06-01 山东华创节能环保科技有限公司 低温自动清灰烟气余热回收装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111780405A (zh) * 2020-07-21 2020-10-16 沈梁 一种环保节能型工业废气燃烧处理装置
CN115053829A (zh) * 2022-08-18 2022-09-16 山东尊润圣罗捷食品有限公司 一种家禽养殖用自动供暖设备

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