CN200965242Y - All-mode three-seal air preheater - Google Patents
All-mode three-seal air preheater Download PDFInfo
- Publication number
- CN200965242Y CN200965242Y CNU2006200272948U CN200620027294U CN200965242Y CN 200965242 Y CN200965242 Y CN 200965242Y CN U2006200272948 U CNU2006200272948 U CN U2006200272948U CN 200620027294 U CN200620027294 U CN 200620027294U CN 200965242 Y CN200965242 Y CN 200965242Y
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- Prior art keywords
- radially
- dividing plate
- fan
- radial
- sealing
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- 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.)
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- 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
Abstract
The utility model relates to a cotyped three-seal air preheater, comprising a rotor and a sealed sector board. The rotor comprises a plurality of sector storehouse circling the center axis through a pin roll in the mode structure and fixed on the center axis. The sector storehouse is composed of two radial adjunct clapboards provided with sealed tablets along the radial sides, a plurality of circumferential clapboards fixed and connected between the radial clapboards and heat consecrating parts cased in the circumferential clapboards, which is characterized in that each radial clapboard is fixed on the center axis barrel through the pin roll in the mode structure; the adjunct sector storehouses share a radial clapboard; the sealed sector board covers three sealed tablets of the radial clapboard. The utility model has the advantages of that the cotype structure eliminates the crack problems caused by the welding of users, increases the quality and operation efficiency; by using the single-tablet radial clapboard, the air leak problem of the clearance is eliminated, the material is economized, the man-hour is saved, the efficiency is increased and the cost is reduced; the sealing effect of the three-seal structure is excellent, which markedly reduces the side air leakage quantity of the side smoke of the air and increases the heating efficiency.
Description
Technical field
The utility model relates to a kind of thermal power generation unit boiler auxiliary equipment, relates in particular to a kind of syntype three sealing air preheaters.
Background technology
In the thermal power generation field, for making full use of the energy, air preheater is set at the flue afterbody of thermal power generation unit boiler, by the cycling hot exchange preheated air of flue gas and air, and offer boiler auxiliary combustion and carry coal dust and use.Air preheater comprises rotor, sealing fanning strip, shell, bearing, motor, decelerator, its core component is a rotor, rotor comprises somely fixes fan-shaped storehouse it on by bearing pin around the center beam barrel with mode configuration, fan-shaped storehouse by limit radially be provided with diaphragm seal adjacent two radially dividing plate and radially between dividing plate fixedly connected a plurality of hoop dividing plates and the heat accumulating element of packing into wherein form, so-called mode configuration promptly is fixedly connected as assembly by fan-shaped storehouse more than two, and the end embeds in the beam barrel groove of center again by the fixing frame mode of bearing pin.At present, what generally adopt is the half module formula double containment air preheater in 24-36 fan-shaped storehouse, mainly there is following problem in it: (1) is because the rotor big and heave, consider the load capacity of bearing pin in the transportation, and employing half module formula structure, promptly there is the radially dividing plate of 1/2-1/3 to realize by welding to replenish to be installed on the beam barrel of center rather than voluntarily, on the dividing plate that also a large amount of hoop dividing plates must be welded simultaneously radially by the user by mode configuration.Like this, because of using the on-the-spot adjusting workload of installing big, quality is wayward, and the cycle that especially eliminates stress after the welding is short, often in use cracks, and influences device lifetime, time-consuming concerning the user, effort, greatly expensive, and the raising operation cost lowers efficiency; (2) in the present half module formula construction rotor, be radially dividing plate of bilayer between adjacent fan-shaped storehouse, scurrying wind because of gapped existence has increased inleakage, and the radially dividing plate and the gap of establishing have again simultaneously all taken the heat accumulating element space, consumptive material, big, the reduction thermal efficiency of assembly working amount; (3) the sealing fanning strip that is used to isolate flue gas and air that is symmetricly set at present rotor top and bottom in the air preheater is at generally 15 °-22.5 ° of employings of the state of the art that adopts 24-36 fan-shaped storehouse, in the rotor rotation, the sealing fanning strip can cover two radially dividing plate diaphragm seals, this double containment cooperation still has big by the inleakage of air side to fume side, influences boiler thermal output.
The utility model content
Main purpose of the present utility model is at above-mentioned three problems, and a kind of employing is provided, and radially dividing plate need not user's welding and the version of being installed by manufacturer fully, simplify between adjacent fan-shaped storehouse radially dividing plate setting and improve the novel air preheater of sealing fanning strip sealing property.
In conjunction with above problem the existing half module formula double containment air preheater in 24-36 fan-shaped storehouse that adopts has been carried out the performance evaluation experiment, comprise bearing pin intensity and Analysis of Bearing Capacity, adopt between adjacent fan-shaped storehouse double-deck radially dividing plate and individual layer radially dividing plate structural strength analysis and increase the feasibility analysis of fan-shaped storehouse quantity, analyze by experiment, obtain scientific basis, drawn the improvement conclusion.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of syntype three sealing air preheaters, comprise rotor, sealing fanning strip, shell, bearing, motor, decelerator, described rotor comprises somely fixes fan-shaped storehouse it on by bearing pin around the center beam barrel with mode configuration, fan-shaped storehouse by limit radially be provided with diaphragm seal adjacent two radially dividing plate and radially between dividing plate fixedly connected a plurality of hoop dividing plates and the heat accumulating element of packing into wherein form, it is characterized in that described radially dividing plate all is fixed on the beam barrel of center by bearing pin with mode configuration; The shared dividing plate radially in adjacent fan-shaped storehouse; The sealing fanning strip covers three radially dividing plate diaphragm seals.
Described fan-shaped storehouse angle is 7.5 °-10 °, and described sealing fanning strip angle is 22.5 °-30 °.
The beneficial effects of the utility model are: owing to adopted the syntype structure, thereby radially dividing plate need not the user welding eliminated the user and welded the crack problem of generation, improved the air preheater assembling quality, prolong air preheater service life, improved user side's efficiency of operation and economic benefit; With being set between adjacent fan-shaped storehouse, the biradial dividing plate becomes a shared dividing plate radially, can reduce half radially dividing plate, eliminated the gap problem of leaking out, economical with materials significantly, weight reduction, and reduce to install and regulate workload, the heat accumulating element space increased, improve the thermal efficiency, for producer and with bringing convenience per family and interests; Form three hermetically-sealed constructions between air and the flue gas, can significantly reduce the inleakage of air to fume side, directly inleakage is compared with double sealing structure and can be reduced by 20%, has improved boiler thermal output.
Description of drawings
Fig. 1 is a main TV structure schematic diagram of the present utility model;
Fig. 2 is the syntype rotor plan structure schematic diagram that manufacturer finishes;
Fig. 3 is the syntype rotor plan structure schematic diagram of finally being finished by the user;
Fig. 4 is existing double containment air preheater sealing effectiveness schematic diagram;
Fig. 5 is the utility model three sealing air preheater sealing effectiveness schematic diagrames;
Below in conjunction with drawings and Examples the utility model is described in detail.
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, a kind of syntype three sealing air preheaters comprise rotor 1, sealing fanning strip 2, shell 3, bearing 4, bearing 5, motor 6, decelerator 7.Described rotor 1 comprises somely fixes fan-shaped storehouse 20 it on by bearing pin 15 around center beam barrel 16 with mode configuration 21, fan-shaped storehouse 20 by limit radially be provided with diaphragm seal 17 adjacent two radially dividing plate 8 and radially between dividing plate fixedly connected a plurality of hoop dividing plates and the heat accumulating element 14 of packing into wherein form, rotor 1 comprises 48 fan-shaped storehouses 20 in this example, fan-shaped storehouse angle is 7.5 °, fan-shaped storehouse 20 interior two is 8 fixedly connected 5 hoop dividing plates 9 of dividing plate radially, 10,11,12,13 are further divided into 5 little storehouses that differ in size with fan-shaped storehouse 20, and heat accumulating element 14 is housed in the little storehouse.In this example, air preheater has 12 mode configurations 21, each mode configuration comprises 4 radially 3 fan-shaped storehouses 20 of dividing plate 8 formations, being about to all radially in manufacturer, dividing plate 8 is connected to mode configuration 21, be fixed on the center beam barrel 16 by bearing pin 15 again in the groove of embedding center, end beam barrel 16, the user at the scene only welding ring to dividing plate, convenient and swift, and control installation quality easily.Fig. 2 illustrates the syntype rotor plan structure schematic diagram that manufacturer finishes.Fig. 3 illustrates the syntype rotor plan structure schematic diagram of finally being finished to dividing plate by user's welding ring.Simultaneously, the shared dividing plate 8 radially in adjacent fan-shaped storehouse 20 has been eliminated the gap between the two fan-shaped storehouses 20 thus, removed and scurried leaking out that wind causes, and the space that can increase heat accumulating element 14 improves the thermal efficiency, also saved lot of materials, reduce the assembly working amount, reduce manufacturing cost.Sealing fanning strip 2 angles that the utility model provides are 22.5-30 °, as Fig. 1, shown in Figure 5, the angle of fanning strip 2 is 22.5 ° in this example, can cover three radially dividing plate diaphragm seals 17, and diaphragm seal 17 is fixedly installed on the longitudinal edge of dividing plate 8 radially by pressing plate 18 and bolt 19.In actual motion, air and flue gas pass through from the sealing fanning strip both sides that are used for air-isolation and flue gas that are symmetricly set in rotor top and bottom respectively.Sealing condition with rotor bottom is an example, and Fig. 4 is the double sealing structure sealing effectiveness schematic diagram of available technology adopting, and fanning strip 2 covers two radially dividing plate diaphragm seals 17, and as shown in the figure, air side still has to fume side leaks out 22 more greatly; The three hermetically-sealed construction sealing effectiveness schematic diagrames that Fig. 5 provides for the utility model, the sealing fanning strip 2 by with three radially dividing plate diaphragm seal 17 cooperate, produced the better seal effect, by relatively illustrating, air side is to the 22 significantly minimizings of leaking out of fume side, can reduce inleakage 20% through field test, obviously improve the air preheater thermal efficiency.
In actual applications, the air preheater of different size can be taked different version, air preheater to configuration capacity 300-600MW generating set, its rotor can adopt 12 mode configurations, a mode configuration is made up of 3 fan-shaped storehouses, and the hoop dividing plate between per two mode configurations of user installation forms a fan-shaped storehouse, and fan-shaped storehouse angle is 7.5 °, amount to 48 fan-shaped storehouses, adopt 22.5 ° sealing fanning strip; To being higher than the air preheater of 600MW generating set, its rotor can adopt 16 mode configurations, a mode configuration is made up of 2 fan-shaped storehouses, hoop dividing plate between per two mode configurations of user installation forms a fan-shaped storehouse, fan-shaped storehouse angle is 7.5 °, amount to 48 fan-shaped storehouses, adopt 22.5 ° sealing fanning strip; To being lower than the air preheater of 300MW generating set, its rotor can adopt 9 mode configurations, and a mode configuration is made up of 3 fan-shaped storehouses, and fan-shaped storehouse angle is 10 °, amounts to 36 fan-shaped storehouses, adopts 30 ° sealing fanning strip.
Claims (2)
1, a kind of syntype three sealing air preheaters, comprise rotor, sealing fanning strip, shell, bearing, motor, decelerator, described rotor comprises somely fixes fan-shaped storehouse it on by bearing pin around the center beam barrel with mode configuration, fan-shaped storehouse by limit radially be provided with diaphragm seal adjacent two radially dividing plate and radially between dividing plate fixedly connected a plurality of hoop dividing plates and the heat accumulating element of packing into wherein form, it is characterized in that described radially dividing plate all is fixed on the beam barrel of center by bearing pin with mode configuration; The shared dividing plate radially in adjacent fan-shaped storehouse; The sealing fanning strip covers three radially dividing plate diaphragm seals.
2, a kind of syntype three sealing air preheaters according to claim 1 is characterized in that described fan-shaped storehouse angle is 7.5 °-10 °, and described sealing fanning strip angle is 22.5 °-30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200272948U CN200965242Y (en) | 2006-09-12 | 2006-09-12 | All-mode three-seal air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200272948U CN200965242Y (en) | 2006-09-12 | 2006-09-12 | All-mode three-seal air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200965242Y true CN200965242Y (en) | 2007-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200272948U Expired - Fee Related CN200965242Y (en) | 2006-09-12 | 2006-09-12 | All-mode three-seal air preheater |
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| CN (1) | CN200965242Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007176A1 (en) * | 2011-07-09 | 2013-01-17 | Cheng Aiping | Rotary gas-gas heater with axially isolated and sealed compartments in leaktight sealing system |
| CN103982907A (en) * | 2014-04-30 | 2014-08-13 | 苏州有色金属研究院有限公司 | Sealing structure for continuous rotary high-temperature heat exchanger |
| CN109282300A (en) * | 2018-09-10 | 2019-01-29 | 东方电气集团东方锅炉股份有限公司 | The production method of large-scale air preheater |
| CN112212356A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Multichannel heat accumulation formula air heater |
-
2006
- 2006-09-12 CN CNU2006200272948U patent/CN200965242Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007176A1 (en) * | 2011-07-09 | 2013-01-17 | Cheng Aiping | Rotary gas-gas heater with axially isolated and sealed compartments in leaktight sealing system |
| CN103982907A (en) * | 2014-04-30 | 2014-08-13 | 苏州有色金属研究院有限公司 | Sealing structure for continuous rotary high-temperature heat exchanger |
| CN109282300A (en) * | 2018-09-10 | 2019-01-29 | 东方电气集团东方锅炉股份有限公司 | The production method of large-scale air preheater |
| CN109282300B (en) * | 2018-09-10 | 2022-07-12 | 东方电气集团东方锅炉股份有限公司 | Manufacturing method of large-scale air preheater |
| CN112212356A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Multichannel heat accumulation formula air heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071024 Termination date: 20150912 |
|
| EXPY | Termination of patent right or utility model |