CN2564973Y - Sealer for rotary air preheater - Google Patents
Sealer for rotary air preheater Download PDFInfo
- Publication number
- CN2564973Y CN2564973Y CN02246159U CN02246159U CN2564973Y CN 2564973 Y CN2564973 Y CN 2564973Y CN 02246159 U CN02246159 U CN 02246159U CN 02246159 U CN02246159 U CN 02246159U CN 2564973 Y CN2564973 Y CN 2564973Y
- Authority
- CN
- China
- Prior art keywords
- plate
- axial
- sealing
- rotor
- preheater
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 230000001172 regenerating effect Effects 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Air Supply (AREA)
Abstract
The utility model relates to a sealing device for a rotary air preheater, wherein one side of a radial fixing sealing plate is welded on a central beam of the outer shell of a preheater, and the other side is fixed on both side surfaces of a fan-shaped plate through screw bolts; one side of an axial fixing sealing plate is welded on the outer shell of the preheater, and the other side is fixed on both side surfaces of an axial plate through the screw bolts. Gap quantity between a radial sealing sheet arranged on a baffle plate and the sealing surface of the fan-shaped plate and the gap quantity between an axial sealing sheet arranged on the outer shell of a rotor and the sealing surface of the axial plate are both determined according to the precalculated thermal expansion quantity of the rotor and the correction value of thermal deformation and adjusted through a regulating threaded rod. The improvement of the design overcomes the defect that an adjustable sealing device is easily worn to cause the air leakage to be increased, and eliminates the defect that a fixed sealing device can not be adjusted and replaced, so the rate of the air leakage is reduced and is stable. The utility model can also be locally adjusted and replaced, so the maintenance cost and the workload are saved.
Description
Technical field
The utility model relates to a kind of sealing device of rotary regenerative air preheater, is used in the heat-exchange apparatus of boiler unit in thermal power plant.
Background technology
Rotary regenerative air preheater is extensively adopted by big-and-middle-sized power plant with heat-transfer area density height, compact conformation, characteristics such as the life-span is long, operating cost is low.Its basic element of character is a rotor, and tens thousand of square millimeters the corrugated plating heat exchange element that is rolled into special shape is equipped with in the inside.When rotor rotated, the hot flue gas of discharging after the boiler combustion entered preheater and passes rotor, and heat is recovered.The air that enters preheater simultaneously also discharges the heat that reclaims to air by rotor.Like this, along with the rotation continuously of rotor, the flue gas of discharge and the air that enters carry out heat exchange.But since gapped between rotor and the shell, owing to have sizable pressure differential between air and the flue gas, make the problem of leaking out of rotary regenerative air preheater become particularly outstanding simultaneously.The leaking out of the sealing device of rotary regenerative air preheater comprises directly leaks out and carries the two parts that leak out.The latter is device structure decision itself, is a constant.The former is directly proportional with the size of seal clearance, and the sealing device technical issues that need to address that Here it is are simultaneously also relevant with differential static pressure and current density.Therefore air leak rate of air curtain is to weigh the important symbol of its technical merit.The sealing means that influences air leak rate of air curtain has experienced " adjustable " and " fixed " two developing stage, and adjustable sealing device is the position of adjusting fanning strip or axial plate by automatic control system, thereby keeps the constant principle of seal clearance to control air leak rate of air curtain.But the sealing device of this structure is along with the preheater increase of running time, and diaphragm seal is under the high pressure air flow effect, and wearing and tearing increase gradually, cause air leakage rate to increase year by year.And fixed sealing device is to add that at the thermal expansion amount that precomputes rotor correction value determines the seal clearance amount, adjusts the fanning strip and the axial distance of plate according to this amount then, and its welding is fixing.Fanning strip and the welding in a single day of axial plate are fixed and just can not be adjusted once more and change like this, otherwise need a whole set of sealing system of dismounting, all more change, and obviously increase the maintenance cost of equipment, cause unnecessary waste.
The utility model content
The utility model provides a kind of air leak rate of air curtain that reduces preheater effectively in order to overcome the defective of prior art, and can the local sealing device of adjusting and changing.
The sealing device of the utility model rotary regenerative air preheater, comprise fanning strip, axial plate, diaphragm seal, radially fixing seal plate and axial restraint sealing plate, wherein radially the fixing seal plate is welded on the center sill of preheater shell on one side, another side is fixed by bolts on the two sides of fanning strip, the apex seal and the gap value between the fanning strip sealing surfaces that are installed on the dividing plate are that basis precomputes the thermal expansion amount of rotor and the correction value of thermal deformation is determined, and are adjusted by adjusting screw(rod); And the axial restraint sealing plate is welded on the preheater shell on one side, another side is fixed by bolts on the two sides of axial plate, be installed on the rotor case the axial seal sheet and axially the gap value between the plate sealing surfaces be according to precomputing the thermal expansion amount of rotor and the correction value of thermal deformation is determined, and adjust by adjusting screw(rod).
The improvement of the sealing device design of the utility model rotary regenerative air preheater, both overcome the adjustable sealing device shortcoming that causes leaking out and increase easy to wear, eliminated the shortcoming that fixed sealing device cannot be adjusted and can not change again, air leak rate of air curtain is reduced and stablized; And can locally adjust and change, save maintenance cost and workload, have tangible economic benefit.
Description of drawings
Fig. 1 is a rotary regenerative air preheater structural representation sketch;
Fig. 2 is the utility model structural representation, i.e. Figure 1A-A generalized section;
Fig. 3 is the B-B generalized section of Fig. 2;
Fig. 4 is the C-C generalized section of Fig. 2.
The specific embodiment
Fig. 1, Fig. 2 are two fens storehouse rotary regenerative air preheater structural representation sketches, be equipped with two fanning strips 3 up and down respectively, two blocks of axial plates 5 are housed on the shell 4, shell 4 is fixedlyed connected motionless with the bearing of preheater, the rotor that corrugated plating is housed rotates under the effect of transmission mechanism, on the radially dividing plate 8 of rotor, apex seal 7 is housed, with apex seal 7 corresponding rotor cases 9 on axial seal sheet 6 is housed.When rotor rotation, apex seal 7 and axial seal sheet 6 leave certain seal clearance respectively and between fanning strip 3 and axial plate 5 sealing surfaces, to guarantee the inleakage minimum, gap value between them is that the thermal expansion amount by calculating rotor and the correction value of thermal deformation are adjusted in advance, but along with this gap value will often be keeped in repair and adjust to the time length of operation, to reduce air leak rate of air curtain.
From Fig. 3 as seen, fanning strip 3 is fan-shaped, one side from two sides by fixing seal plate 12 radially is fixing with center sill 11 welding, and radially the another side of fixing seal plate 12 is by after adjusting screw rod 13 and adjusting the distance of fanning strips 3, and is connected and fixed with fanning strip 3 sides by a plurality of bolts 10; Axially plate 5 is an arc, one side from two sides by axial restraint sealing plate 15 is fixing with shell 4 welding, the another side of axial restraint sealing plate 15 is by after adjusting screw rod 14 and adjusting the distance of axial plate 5, and is connected and fixed by a plurality of bolts 10 and axial plate 5 sides, as shown in Figure 4.
Claims (1)
1, a kind of sealing device of rotary regenerative air preheater, comprise fanning strip, axial plate, diaphragm seal, radially fixing seal plate and axial restraint sealing plate, it is characterized in that described radially fixing seal plate (12) is welded on the center sill (11) of preheater shell on one side, another side is fixed on the two sides of fanning strip (3) with bolt (10), the apex seal (7) and the gap value between fanning strip (3) sealing surfaces that are installed on the dividing plate (8) are that basis precomputes the thermal expansion amount of rotor and the correction value of thermal deformation is determined, and are adjusted by adjusting screw(rod) (13); Described axial restraint sealing plate (15) is welded on the preheater shell (4) on one side, another side is fixed on the two sides of axial plate (5) with bolt (10), be installed on the rotor case (9) axial seal sheet (6) and axially the gap value between plate (5) sealing surfaces be according to precomputing the thermal expansion amount of rotor and the correction value of thermal deformation is determined, and adjust by adjusting screw(rod) (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02246159U CN2564973Y (en) | 2002-09-17 | 2002-09-17 | Sealer for rotary air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02246159U CN2564973Y (en) | 2002-09-17 | 2002-09-17 | Sealer for rotary air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2564973Y true CN2564973Y (en) | 2003-08-06 |
Family
ID=33717541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02246159U Expired - Fee Related CN2564973Y (en) | 2002-09-17 | 2002-09-17 | Sealer for rotary air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2564973Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825288A (en) * | 2010-04-27 | 2010-09-08 | 西安交通大学 | Sealing device for boiler rotary 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 |
| CN102692034A (en) * | 2012-05-29 | 2012-09-26 | 西安交通大学 | Device for fixing rotating steam air heater of boiler |
| CN103032884A (en) * | 2012-12-31 | 2013-04-10 | 黄辉 | Sealing device of rotary air pre-heater |
| CN103212939A (en) * | 2013-04-28 | 2013-07-24 | 北京天源科创风电技术有限责任公司 | Processing method for repairing blade tip mechanism of wind turbine generator set |
| CN103868093A (en) * | 2012-12-14 | 2014-06-18 | 阿尔斯通技术有限公司 | Leakage reduction system in power plant operations |
| CN106287790A (en) * | 2016-08-31 | 2017-01-04 | 戴春喜 | Rotary regenerative air preheater and sealing structure thereof |
| CN107894007A (en) * | 2017-11-08 | 2018-04-10 | 上海锅炉厂有限公司 | A kind of floating regenerative air heater hot junction radial sealing system |
-
2002
- 2002-09-17 CN CN02246159U patent/CN2564973Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825288A (en) * | 2010-04-27 | 2010-09-08 | 西安交通大学 | Sealing device for boiler rotary 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 |
| 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 |
| CN102692034B (en) * | 2012-05-29 | 2014-07-02 | 西安交通大学 | Device for fixing rotating steam air heater of boiler |
| CN102692034A (en) * | 2012-05-29 | 2012-09-26 | 西安交通大学 | Device for fixing rotating steam air heater of boiler |
| CN103868093A (en) * | 2012-12-14 | 2014-06-18 | 阿尔斯通技术有限公司 | Leakage reduction system in power plant operations |
| CN103032884A (en) * | 2012-12-31 | 2013-04-10 | 黄辉 | Sealing device of rotary air pre-heater |
| CN103212939A (en) * | 2013-04-28 | 2013-07-24 | 北京天源科创风电技术有限责任公司 | Processing method for repairing blade tip mechanism of wind turbine generator set |
| CN103212939B (en) * | 2013-04-28 | 2015-08-19 | 北京天源科创风电技术有限责任公司 | A kind of process of repairing Wind turbines blade tip mechanism |
| CN106287790A (en) * | 2016-08-31 | 2017-01-04 | 戴春喜 | Rotary regenerative air preheater and sealing structure thereof |
| CN107894007A (en) * | 2017-11-08 | 2018-04-10 | 上海锅炉厂有限公司 | A kind of floating regenerative air heater hot junction radial sealing system |
| CN107894007B (en) * | 2017-11-08 | 2023-10-17 | 上海锅炉厂有限公司 | Hot end radial sealing system of floating air preheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ROOM 901, BUILDING 1, MINGHUA BUILDING, LANE 525, Free format text: FORMER NAME OR ADDRESS: ROOM 1003, NO. 765, XIZHANG ROAD(SOUTH), SHANGHAI CITY |
|
| CP03 | Change of name, title or address |
Patentee address after: Shanghai city Whampoa District fangxie Road Lane 525 Ming Hua Building 1 room No. 901 Patentee address before: Room 765, No. 1003 Tibet South Road, Shanghai |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Sheng Wei Document name: Decision of the request for invalidation |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Patentee address after: Blue Salih International Center, No. 3 Chaoyang District West Road Beijing 100026 North Building Room 1001 Patentee address before: Shanghai city Whampoa District fangxie road 200011 Lane 525 Ming Hua Building 1 room No. 901 |
|
| DD01 | Delivery of document by public notice |
Addressee: Sheng Wei Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030806 Termination date: 20091019 |