CN201925946U - Self-engaged box-type elastic device for air preheater - Google Patents
Self-engaged box-type elastic device for air preheater Download PDFInfo
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- CN201925946U CN201925946U CN2010206354666U CN201020635466U CN201925946U CN 201925946 U CN201925946 U CN 201925946U CN 2010206354666 U CN2010206354666 U CN 2010206354666U CN 201020635466 U CN201020635466 U CN 201020635466U CN 201925946 U CN201925946 U CN 201925946U
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- Prior art keywords
- air preheater
- rectangular box
- fovea superior
- elastic device
- air
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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
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Abstract
The utility model relates to a self-engaged box-type elastic device for an air preheater, which comprises a rectangular-box body, wherein an elastic assembly is installed on a rectangular-box soleplate, a slide block is installed on the elastic assembly, a transverse lateral-wall plate of the rectangular-box body is an extending lateral-wall plate with an extending plate at the lower part, and rotor partition-plate connecting through holes are drilled on the extending lateral-wall plate. Not only does the device have a reasonable design and a simple structure, but also the air-leakage coefficient of the air preheater can be minimized.
Description
Technical field
The utility model relates to heat-exchange apparatus, relates in particular to a kind of air preheater from kissing the boxlike elastic device
Background technology
1, rotary regenerative air heater brief introduction: rotary regenerative air preheater is a kind of heat-exchange apparatus that is used for large-sized boiler, and it utilizes the heat of boiler smoke to come the required air of heating flame, improves the efficient of boiler with this.Rotary regenerative air preheater mainly by central shaft, rotor, be contained in heat exchange element in the rotor lattice storehouse, rotor case, transition cigarette air channel, top structure, polycrystalline substance, top fanning strip, bottom fanning strip, arc, spring bearing, guide bearing, drive unit etc. and form.Most important parts are rotors, and rotor is divided into several lattice storehouses by a lot of individual radially dividing plates and hoop dividing plate with rotor, places heat exchange element in the lattice storehouse.
2, sealing system brief introduction: realize the heat exchange between flue gas and the air and radial and axial diaphragm seal is installed on the rotor radial dividing plate by heat exchange element during the rotor rotation.Bottom apex seal and bottom fanning strip, top apex seal and top fanning strip, axial seal sheet and arc in servicely contact or keep very little distance hot, form the sealing between flue gas and the air.The sealing property of air preheater is one of most important performance indications, directly influences boiler efficiency.
3, the air preheater analysis of leaking out; Since air preheater when operation air side be malleation, fume side is a negative pressure, air can leak to fume side by the gap between diaphragm seal and fanning strip, the arc, this with reduction give, the exerting oneself of air-introduced machine, thereby influence the whole cooker efficiency of furnace.The air leak rate of air curtain of air preheater is the important indicator that influences boiler efficiency, and the air-heater leakage rate is low more, and boiler efficiency is high more.Improving boiler efficiency by transforming air preheater, is very economy, effective method.Under hot running status, each parts of air preheater all can expand because of being heated, and rotor can become mushroom, and the gap between rotor and fanning strip, the arc can change, and most of gap all can diminish.Under the hot running status,,, may cause air preheater stuck if too small if excesssive gap will cause the air-heater leakage rate very big.The air leak rate of air curtain of air preheater is the key factor that influences boiler operating efficiency, so the sealing between air and the flue gas seems particularly important, the Sealing Technology of air preheater also is one of core technology of each air preheater producer.
Producer's technical Analysis that present air preheater undergoes technological transformation:
The Sealing Technology transformation project of air preheater is after country lists the energy-saving and emission-reduction project in, and how each thermal power plant is accomplishing to reduce the preheater air leak rate of air curtain, and technical security is reliable as mainly dealing with problems.The leaking out of a lot of power plant preheater reaches 15% or more even is higher, and a lot of in addition power plant air preheater also has stifled grey, causes problems such as maintenance cost height.At present domestic air preheater reforming enterprise mainly contains Britain Howden, Huaneng Group, Beijing and more than ten tame technological transformation producers such as reaches, wherein the VN Sealing Technology of Britain Howden has occupied most of market share, and Huaneng Group, Beijing reaches the flexible contact seal of company, and market development is very fast at home in the recent period.But this project reconstruction cost is higher, and specification requirement is higher, and the special the said firm of core material monopolizes to some extent, fails to guarantee that power plant transforms back oneself's maintenance debugging.The rotary regenerative air preheater sealing device mainly adopts following several form: 1, adjustable sealing.Fanning strip and arc can be adjusted by automatic or manual, and wherein fanning strip can be adjusted mostly automatically.2, fixed sealing: Britain Howden company has this technology, be according to the rotary regenerative air preheater operational factor, precompute the expansion clearance between hot lower sealing piece and fanning strip, the arc, reserve when mounted, reach best sealing state after expanding when guaranteeing hot operation.Since epitrochanterian diaphragm seal with the cold conditions gap between the fanning strip, arc be rotor with fanning strip, air preheater top bottom structure between " thermal expansion difference ", calculating and method of adjustment complexity, construction requirement strictness.This technology is only grasped by Howden company, and as core technology, usually do not offer client's cold conditions setting data and establishing method, the sealing sheet has only 1～3mm thickness, move several years and just need change because of ash cutting and corrosion, because the core technology that the gap is set is monopolized, can only ask specialized company to carry out the gap once more at high price and set, costly.Because still there are error in cold conditions calculation of Gap and adjustment, still there is certain leakage-gap between fanning strip and the diaphragm seal simultaneously.And, under unusual (as the cigarette temperature abnormality) situation of boiler operatiopn, cause the stuck situation of rotor easily owing to be the gap width that calculates by specified running status.3, Huaneng Group, Beijing reaches the flexible contact seal technology of self-lubricating of company; Diaphragm seal is that the self-lubricating alloy material that utilizes the spring hinge structure to form is made, the static seal surface of still fitting well when guaranteeing space change, guarantee sealing, the existing market prospect is better, but this project reconstruction cost is higher, specification requirement is higher, because core material particularity, the said firm monopolizes to some extent, fails to guarantee that power plant transforms back oneself's maintenance debugging, maintenance cost after quality guarantee period is higher, and the cost price of transformation is very high to be caused a lot of required transformation producer to wait for because of cost issues to look around.
Summary of the invention
For overcoming the prior art deficiency, the utility model purpose provides a kind of air preheater from kissing the boxlike elastic device, and this installs simple structure not only reasonable in design, and the air leakage coefficient of air preheater can be dropped to minimum.
The utility model comprises rectangular box, on the described rectangular box base plate elastic parts is installed, on the described elastic parts slide block is installed, described rectangular box one cross side wallboard is the extension sidewall paneling that the bottom has extension board, offers rotor partition panel connecting through hole on the described extension sidewall paneling.
Elastic parts described in the utility model is several springs, and described slider bottom is provided with projection on several, and correspondence is provided with several projections down on the described rectangular box base plate, and described spring housing is located between projection and the following projection.
Slide block described in the utility model is made up of fovea superior piece and lower protruding block, and described fovea superior piece bottom also has groove, and described lower protruding block is inserted in the groove, and fixedly connected by the tapped through hole on the fovea superior piece sidewall.
Fovea superior piece described in the utility model top dual-side is curved, is filled with alloy material in the described fovea superior piece, offers the elastic parts replacement port on another cross side wallboard of described rectangular box.
The utility model remarkable advantage is:
1, good sealing effect: can control the air preheater air leak rate of air curtain and be not more than that repair in 6%, must not be greater than 8% in the phase in a year.
2, long service life: because this device assembly thickness can far surpass former diaphragm seal thickness and form double sealing with former fixed diaphragm seal, slide block described in the utility model is owing to contact with fanning strip all the time, the preset clearance that produces when the unit operation different load for former fixed diaphragm seal compensates, guarantee the economical operation security of equipment, can be as thin diaphragm seal easy formation ash cutting, can need not change black box for a long time.
3, operation is safer.Even if the situation that the air preheater overtemperature takes place, catch fire etc. expanded unusually can not cause air preheater stuck yet, this device is formed by many, and the expansion clearance of reservation is all arranged between every group.
4 mounting process are simple: this device does not need hot gap is calculated, also need not to be limited by material technology design or production Technology monopolization, adapt to and use the oneself of producer to overhaul installation, all need not carry out seal clearance again and calculate, significantly reduced installation, maintenance workload.
5, cost is low, simplicity of design, and parts are easily produced.
Description of drawings
Fig. 1 is that air preheater is from kissing boxlike elastic device organigram.
Fig. 2 is the A-A cutaway view of Fig. 1.
Wherein:
The 1-rectangular box; The 2-elastic parts; The 3-slide block; 4-extends sidewall paneling; 5-rotor partition panel; 6-rotor compartment connecting plate connecting through hole; The 7-spring; The last projection of 8-; Projection under the 9-; 10-fovea superior piece; The 11-lower protruding block; 12-tapped through hole, 13-alloy material, 14 elastic parts replacement ports.
The specific embodiment
Now introduce air preheater described in the utility model from kissing the boxlike elastic device specific embodiment: comprise rectangular box 1 in conjunction with Figure of description 1, on described rectangular box 1 base plate elastic parts 2 is installed, on the described elastic parts 2 slide block 3 is installed, described rectangular box 1 one cross side wallboards are the extension sidewall paneling 4 that the bottom has extension board, offer rotor partition panel connecting through hole 6 on the described extension sidewall paneling 4.
For the ease of installing and fixing spring, described elastic parts 2 is several springs 7, and described slide block 3 bottoms are provided with projection 8 on several, and correspondence is provided with several projections 9 down on described rectangular box 1 base plate, and described spring 7 is sheathed between projection 8 and the following projection 9.
For the ease of the slide block that weares and teares is overhauled replacing in the future, described slide block 3 is made up of fovea superior piece 10 and lower protruding block 11, described fovea superior piece 10 bottoms also have groove, and described lower protruding block 11 is inserted in the groove, and fixedly connected by the tapped through hole 12 on the fovea superior piece sidewall.
For in running with air preheater on better coincide of fanning strip, described fovea superior piece 10 top dual-sides are curved, be filled with alloy material 13 in the described fovea superior piece 10,, offer elastic parts replacement port 14 on described rectangular box 1 another cross side wallboard for the ease of changing spring.
5 is the rotor partition panel shown in the figure.
The utility model is not limited to above-mentioned embodiment, for those of ordinary skills, to any conspicuous improvement or the change that above-mentioned embodiment is made, can not exceed the protection domain of design of the present utility model and claims.
Claims (4)
1. an air preheater is from kissing the boxlike elastic device, it is characterized in that: comprise rectangular box, on the described rectangular box base plate elastic parts is installed, on the described elastic parts slide block is installed, described rectangular box one cross side wallboard is the extension sidewall paneling that the bottom has extension board, offers rotor partition panel connecting through hole on the described extension sidewall paneling.
2. air preheater according to claim 1 is from kissing the boxlike elastic device, described elastic parts is several springs, described slider bottom is provided with projection on several, and correspondence is provided with several projections down on the described rectangular box base plate, and described spring housing is located between projection and the following projection.
3. air preheater according to claim 1 is from kissing the boxlike elastic device, and described slide block is made up of fovea superior piece and lower protruding block, and described fovea superior piece bottom also has groove, and described lower protruding block is inserted in the groove, and fixedly connected by the tapped through hole on the fovea superior piece sidewall.
4. kiss the boxlike elastic device certainly according to claim 1 or 3 described air preheaters, described fovea superior piece top dual-side is curved, is filled with alloy material in the described fovea superior piece, offers the elastic parts replacement port on another cross side wallboard of described rectangular box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206354666U CN201925946U (en) | 2010-12-01 | 2010-12-01 | Self-engaged box-type elastic device for air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206354666U CN201925946U (en) | 2010-12-01 | 2010-12-01 | Self-engaged box-type elastic device for air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925946U true CN201925946U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206354666U Expired - Fee Related CN201925946U (en) | 2010-12-01 | 2010-12-01 | Self-engaged box-type elastic device for air preheater |
Country Status (1)
| Country | Link |
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| CN (1) | CN201925946U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777603A (en) * | 2012-08-21 | 2012-11-14 | 江苏鑫信润科技有限公司 | Multi-arm ceramic sealing device of air preheater |
| CN103195929A (en) * | 2013-04-27 | 2013-07-10 | 四川东能节能技术有限公司 | Self-expanding compensation sealing fin applied to hot end of rotary air pre-heater |
| CN105371691A (en) * | 2015-12-07 | 2016-03-02 | 刘勤 | Elastic sealing device arranged at hot end of air pre-heater |
| CN112610977A (en) * | 2020-12-22 | 2021-04-06 | 南京市利澜电力节能科技有限公司 | A installation mechanism for installing air preheater gasket |
-
2010
- 2010-12-01 CN CN2010206354666U patent/CN201925946U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777603A (en) * | 2012-08-21 | 2012-11-14 | 江苏鑫信润科技有限公司 | Multi-arm ceramic sealing device of air preheater |
| CN102777603B (en) * | 2012-08-21 | 2015-01-07 | 江苏鑫信润科技有限公司 | Multi-arm ceramic sealing device of air preheater |
| CN103195929A (en) * | 2013-04-27 | 2013-07-10 | 四川东能节能技术有限公司 | Self-expanding compensation sealing fin applied to hot end of rotary air pre-heater |
| CN103195929B (en) * | 2013-04-27 | 2016-03-30 | 四川东能节能技术有限公司 | Be applied to the automatic expansion compensation diaphragm seal in rotary regenerative air preheater hot junction |
| CN105371691A (en) * | 2015-12-07 | 2016-03-02 | 刘勤 | Elastic sealing device arranged at hot end of air pre-heater |
| CN112610977A (en) * | 2020-12-22 | 2021-04-06 | 南京市利澜电力节能科技有限公司 | A installation mechanism for installing air preheater gasket |
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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: 20110810 Termination date: 20151201 |
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| EXPY | Termination of patent right or utility model |