CN201731508U - Air sealing device for reducing air leakage of rotary type air preheater - Google Patents

Air sealing device for reducing air leakage of rotary type air preheater Download PDF

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Publication number
CN201731508U
CN201731508U CN2010202644087U CN201020264408U CN201731508U CN 201731508 U CN201731508 U CN 201731508U CN 2010202644087 U CN2010202644087 U CN 2010202644087U CN 201020264408 U CN201020264408 U CN 201020264408U CN 201731508 U CN201731508 U CN 201731508U
Authority
CN
China
Prior art keywords
air
sealing
hermetic seal
rotary type
air heater
Prior art date
Application number
CN2010202644087U
Other languages
Chinese (zh)
Inventor
牛蔚然
邱燕
Original Assignee
山东电力研究院
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 山东电力研究院 filed Critical 山东电力研究院
Priority to CN2010202644087U priority Critical patent/CN201731508U/en
Application granted granted Critical
Publication of CN201731508U publication Critical patent/CN201731508U/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The utility model relates to an air sealing device for reducing air leakage of a rotary type air preheater, which uses an air sealing system to form effective blockage for the air side and smoke side of the rotary type air preheater. The air sealing device comprises at least one air sealing nozzle; the air sealing nozzle is arranged on a corresponding fan plate, and is connected with a booster fan or steam ejecting device; and the booster fan or steam ejecting device is respectively connected with a control computer.

Description

Reduce the gas sealing mechanism that rotary regenerative air heater leaks out
Technical field
The utility model relates to a kind of rotary regenerative air heater sealing device, relates in particular to utilize that hermetic seal is theoretical to reduce the gas sealing mechanism that reduction rotary regenerative air heater that rotary regenerative air heater leaks out leaks out.
Background technology
Rotary regenerative air heater is gas-gas heat-exchanger rig important in the large-sized boiler, and Junker formula (heating surface rotation) and two kinds of forms of rood Miu Leshi (fan housing rotation) are arranged, and the Junker formula is comparatively commonly used at present.
Rotary regenerative air heater is made up of cylindrical housing and cigarette air channel and transmission device usually.The top of cylindrical housing and bottom correspondence up and down are divided into flue gas Circulation Area, circulation of air district and seal area.The flue gas Circulation Area links to each other with flue, and the circulation of air district links to each other with the air channel, ventilating air neither in the seal area, and flue gas does not circulate yet.Be provided with sealing device between the rotating part of rotary regenerative air heater and the standing part, can be called radial seal, hoop sealing and axial seal according to the sealing station difference.
The reason that causes rotary regenerative air heater to leak out has two: the rotation of (1) rotor is brought air into flue gas.But because rotor speed is slower, according to correlation computations as can be known, this leaks out and is no more than 1%.(2) air side and the fume side passage that leaks out that has pressure differential and form by space between rotating part and stationary part.This leaks out is the form of mainly leaking out of rotary regenerative air heater.
Leak out in order to reduce rotary regenerative air heater, sealing means has been done a lot of work at the reduction both sides pressure reduction and the channel cross-sectional area that reduces to leak out at present.As take double sealing structure, and even every fanning strip matches at the two radial and axial diaphragm seals that whenever have at least of rotor rotation, form two seals, the pressure drop of sealing place is reduced half.Because the distortion of " mushroom " shape can take place hot in rotor, air preheater has been installed the thermal deformation of sealing control system tracking rotor, the gap of hot fanning strip and rotor radial seal sheet is maintained in the cold conditions range of set value in running all the time, and then reduce the channel cross-sectional area that leaks out.But these methods thoroughly do not solve the gas leakage problem.
Summary of the invention
The purpose of this utility model is leaked out in order to reduce rotary regenerative air heater exactly, and a kind of gas sealing mechanism that rotary regenerative air heater leaks out that reduces is provided, and it utilizes gas-tight sealing system of rotaty to form effective obstruct to rotary regenerative air heater air side and fume side.
For achieving the above object, the utility model adopts following technical scheme:
A kind ofly reduce the gas sealing mechanism that rotary regenerative air heater leaks out, it comprises at least one hermetic seal spout, and the hermetic seal spout is installed on the corresponding fanning strip, and is connected with booster fan, and booster fan is connected with the control computer.
A kind ofly reduce the gas sealing mechanism that rotary regenerative air heater leaks out, it comprises at least one hermetic seal spout, and the hermetic seal spout is installed on the corresponding fanning strip, and is connected with steam injection equipment, and steam injection equipment is connected with the control computer.
The utility model is installed the hermetic seal spout on present double seal system, utilize flue gas booster fan or steam, form high pressure sealing wind or sealed steam, introduce the hermetic seal spout, set up relation between gas sealing mechanism throughput and boiler operatiopn load, form sealing wind system control strategy, control in real time.
The beneficial effects of the utility model are:
1, the rotary regenerative air heater of setting up based on the hermetic seal theory seals control system.Effectively reduce air preheater and leak out, improve the boiler operatiopn economy.
2, provided the gas sealing mechanism form, sealing source of the gas form.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Wherein, 1. fanning strip, 2. air tight spout, 3. booster fan, 4. steam injection equipment, 5. computer.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Embodiment 1:
Among Fig. 1, it comprises at least one hermetic seal spout 2, and hermetic seal spout 2 is installed on the corresponding fanning strip 1, and is connected with booster fan 3, and booster fan 3 is connected with control computer 5.
Embodiment 2:
Among Fig. 2, it comprises at least one hermetic seal spout 2, and hermetic seal spout 2 is installed on the corresponding fanning strip 1, and is connected with steam injection equipment 4, and steam injection equipment 4 is connected with control computer 5.

Claims (2)

1. one kind is reduced the gas sealing mechanism that rotary regenerative air heater leaks out, and it is characterized in that, it comprises at least one hermetic seal spout, and the hermetic seal spout is installed on the corresponding fanning strip, and is connected with booster fan, and booster fan is connected with the control computer.
2. one kind is reduced the gas sealing mechanism that rotary regenerative air heater leaks out, and it is characterized in that, it comprises at least one hermetic seal spout, and the hermetic seal spout is installed on the corresponding fanning strip, and is connected with steam injection equipment, and steam injection equipment is connected with the control computer.
CN2010202644087U 2010-07-20 2010-07-20 Air sealing device for reducing air leakage of rotary type air preheater CN201731508U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202644087U CN201731508U (en) 2010-07-20 2010-07-20 Air sealing device for reducing air leakage of rotary type air preheater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202644087U CN201731508U (en) 2010-07-20 2010-07-20 Air sealing device for reducing air leakage of rotary type air preheater

Publications (1)

Publication Number Publication Date
CN201731508U true CN201731508U (en) 2011-02-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202644087U CN201731508U (en) 2010-07-20 2010-07-20 Air sealing device for reducing air leakage of rotary type air preheater

Country Status (1)

Country Link
CN (1) CN201731508U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102200408A (en) * 2011-07-09 2011-09-28 程爱平 Isolating air curtain structure of leak-free sealing system of rotary gas-gas heater
CN102200407A (en) * 2011-07-09 2011-09-28 程爱平 Axial isolating sealed cabin of leak-free sealing system of rotary gas-gas heater
CN103206720A (en) * 2013-04-10 2013-07-17 哈尔滨锅炉厂预热器有限责任公司 Positive pressure sealing method and positive pressure sealing system for rotary air preheater
CN106524817A (en) * 2016-10-27 2017-03-22 盛春 Compressed air sealing system and rotary air preheater comprising same
CN107869730A (en) * 2017-11-03 2018-04-03 东方电气集团东方锅炉股份有限公司 Rotary regenerative air preheater
CN108019771A (en) * 2017-10-13 2018-05-11 南京博沃科技发展有限公司 It is a kind of that the air preheater directly to leak out is reduced using rotor rolling action

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102200408A (en) * 2011-07-09 2011-09-28 程爱平 Isolating air curtain structure of leak-free sealing system of rotary gas-gas heater
CN102200407A (en) * 2011-07-09 2011-09-28 程爱平 Axial isolating sealed cabin of leak-free sealing system of rotary gas-gas heater
CN102200408B (en) * 2011-07-09 2012-11-07 程爱平 Isolating air curtain structure of leak-free sealing system of rotary gas-gas heater
CN102200407B (en) * 2011-07-09 2012-12-05 程爱平 Axial isolating sealed cabin of leak-free sealing system of rotary gas-gas heater
WO2013007176A1 (en) * 2011-07-09 2013-01-17 Cheng Aiping Rotary gas-gas heater with axially isolated and sealed compartments in leaktight sealing system
CN103206720A (en) * 2013-04-10 2013-07-17 哈尔滨锅炉厂预热器有限责任公司 Positive pressure sealing method and positive pressure sealing system for rotary air preheater
CN106524817A (en) * 2016-10-27 2017-03-22 盛春 Compressed air sealing system and rotary air preheater comprising same
CN108019771A (en) * 2017-10-13 2018-05-11 南京博沃科技发展有限公司 It is a kind of that the air preheater directly to leak out is reduced using rotor rolling action
CN108019771B (en) * 2017-10-13 2019-06-07 南京博沃科技发展有限公司 It is a kind of to reduce the air preheater directly to leak out using rotor rolling action
CN107869730A (en) * 2017-11-03 2018-04-03 东方电气集团东方锅炉股份有限公司 Rotary regenerative air preheater

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GR01 Patent grant
C14 Grant of patent or utility model
ASS Succession or assignment of patent right

Owner name: STATE ELECTRIC NET CROP.

Effective date: 20130320

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20130320

Address after: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500

Patentee after: Shandong Research Inst. of Electric Power

Patentee after: State Grid Corporation of China

Address before: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500

Patentee before: Shandong Research Inst. of Electric Power

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

Granted publication date: 20110202

Termination date: 20180720

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