CN104791492B - Air preheater and its cold end sealing device axially or radially - Google Patents
Air preheater and its cold end sealing device axially or radially Download PDFInfo
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- CN104791492B CN104791492B CN201510228444.5A CN201510228444A CN104791492B CN 104791492 B CN104791492 B CN 104791492B CN 201510228444 A CN201510228444 A CN 201510228444A CN 104791492 B CN104791492 B CN 104791492B
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- Prior art keywords
- protection board
- air preheater
- cold end
- sealing
- leeward side
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Supply (AREA)
Abstract
The invention discloses air preheater and its cold end sealing device axially or radially, this sealing structure includes sealing plate in the form of sheets, described sealing plate is by leeward side protection board, the stepped construction that intermediate seal plate and weather protection board are laminated, and leeward side protection board is respectively provided with one section of bending section with any side of weather protection board, after the stacking of leeward side protection board and weather protection board two sections of bending sections be respectively positioned on sealing plate homonymy, and the bending direction of two bending sections is contrary, two bending sections constitute one along sealing plate length direction and the outside V-arrangement bayonet socket of opening direction, described intermediate seal plate part is located in V-arrangement bayonet socket, and the free end end of the intermediate seal plate being stretched out by V-arrangement bayonet socket is located at outside V-arrangement bayonet socket；Simultaneously the invention discloses a kind of air preheater using above sealing structure.This sealing structure good seal performance, long service life, using the air preheater slip of this sealing structure is low, fault rate is low.
Description
Technical field
The present invention relates to air preheater parts and air preheater construction applications, more particularly to a kind of air preheater and its cold end footpath
To or axial direction sealing device.
Background technology
Rotary regenerative air preheater abbreviation air preheater, is the heat-exchange apparatus of large-sized boiler, due to respect to tubular air
Preheater, have compact conformation, small volume, heat exchange surface density is high, overall mass is light, metal consumption is few, arrangement is easy for installation,
The features such as cold end corrosion is lighter, is widely used on station boiler.Air preheater is to be come in advance using the flue gas heat that boiler is discharged
Heat enters boiler and participates in the required air of burning, or the reclaimer as boiler smoke heat, in order to use above heat
Make the equipment of other purposes such as fuel dehumidifying, heating, the purpose of this equipment setting is to improve the efficiency of boiler.The leaking out of air preheater
Rate is the important indicator of impact boiler efficiency, and the above air leak rate of air curtain of air preheater of the prior art is generally 6%- under normal circumstances
8%, poor sealing is even as high as 20%, so, the Sealing Technology of air preheater affects greatly on the efficiency of boiler.
In air preheater in prior art, flue gas and air typically adopt adverse current, by setting gas approach and air in air preheater
One end of outlet is defined as hot junction, and the other end of air preheater is cold end.The leaking out to be divided into directly leaking out and carrying of air preheater is leaked out,
Both inleakage ratios are generally less than 1:3, and in directly leaking out, the radial direction inleakage of cold end always accounts for direct inleakage
More than 30%, the ratio that the radial direction inleakage of the bigger air preheater cold end of diameter accounts for always directly inleakage is bigger.Above cold end
Directly leak out the mushroom deformation being formed from the hot shaping in the course of the work of air preheater rotor and gravity deformation superposition.Existing
Have because air preheater rotor is less compared to one end deflection positioned at hot junction positioned at deforming of one end of cold end in technology, simultaneously
The hot fluid of cold end have passed through heat release, hot-cold fluid does not absorb heat, and causes the design of the existing sealing structure to cold end or further
Transformation dynamics is little, is unfavorable for macroeconomic on-road efficiency and the technology controlling and process of steam generator system.
Content of the invention
For in above-mentioned prior art due to air preheater rotor be located at cold end one end deformation compared to positioned at hot junction
One end deflection is less, and the hot fluid of cold end have passed through heat release simultaneously, hot-cold fluid does not absorb heat, and causes the existing sealing to cold end
The design of structure or further transformation dynamics are little, are unfavorable for the macroeconomic on-road efficiency of steam generator system and asking of technology controlling and process
Topic, the invention provides a kind of air preheater and its cold end sealing device axially or radially.
For solving the above problems, air preheater and its cold end sealing device axially or radially that the present invention provides passes through following
Technical essential carrys out solve problem：Air preheater cold end sealing device axially or radially, including sealing plate in the form of sheets, described sealing
Plate is the stepped construction being laminated by leeward side protection board, intermediate seal plate and weather protection board, described intermediate seal plate
It is fastened between leeward side protection board and weather protection board, and leeward side protection board is equal with any side of weather protection board
There is one section of bending section, after the stacking of leeward side protection board and weather protection board two sections of bending sections be respectively positioned on sealing plate same
Side, and the bending direction of two bending sections is contrary, two bending sections constitute one along sealing plate length direction and opening direction
Outside V-arrangement bayonet socket, described intermediate seal plate part be located at V-arrangement bayonet socket in, and the intermediate seal plate being stretched out by V-arrangement bayonet socket from
Outside V-arrangement bayonet socket is located at by end end.
Specifically, above structure be used for be arranged on the radial direction of cold end end of rotor or/and the axial direction of cold end side, with
In air preheater work process, above structure rotates with rotor.The intermediate seal plate of setting is used for forming a spoiler, to turn
Produce the wind effect of disturbing when son rotates and form one brattice, hinder rotor cold end end face and the leakage of cold end axial direction, to realize turning
The radial seal of sub- cold end and the axial seal of cold end；The leeward side protection board of setting and weather protection board are mainly used in centre
Sealing plate fixation and realize to middle sealing plate protection：In the rotation process of rotor, the centre stretched out by V-arrangement bayonet socket is close
Structure setting outside V-arrangement bayonet socket for the free end end of shrouding makes the partial Upwind stretched out with respect to V-arrangement bayonet socket edge,
During the mushroom deformation of rotor, the free end of intermediate seal plate is also possible to contact product with fanning strip or stator interior simultaneously
Raw frictional force is even collided, and so, above procedure makes intermediate seal plate during deformation, the inwall centering of V-arrangement bayonet socket
Between sealing plate have supporting role, to disperse above intermediate seal to become pressure thereon in deformation process, reaching reduction local should
The effect of power, by the intermediate seal panel material using suitable material, can achieve the above intermediate seal being clamped in V-arrangement bayonet socket
The rich sexual cycle test more than million times for the plate part；Meanwhile, the leeward side protection board of setting and weather protection board are as V-arrangement card
The bending section that mouth avoids also has the effect that enhancing wind is disturbed, and reaches the purpose strengthening axially or radially sealing property.
As the preferred embodiment of above structure, it is set to be increased by its side to opposite side width linearity with upper sealing panel
Add deduct little, to adapt to the mushroom deformation of working rotor process.
This structure applies to cold end end face or cold end radial seal structure compared to tradition, due to intermediate seal plate can with fixed
Son or fanning strip contact are formed directly to be isolated runner and realizes sealing, coordinates the wind of above-mentioned generation to disturb simultaneously and acts on so that this structure
There is good sealing, by limiting so that this structure also has longer service life to this planform.
As the restriction further of the sealing device axially or radially to air preheater cold end, it is easily achieved as one kind, right
During the deformation of intermediate seal plate, there is the leeward side protection board of good power peptizaiton and setting of weather protection board bending section shape
Put form, described bending section is the arc to corresponding leeward side protection board or weather protection board curving, or described
Bending section is the flat board to corresponding leeward side protection board or weather protection board curving.
As the restriction further of the sealing device axially or radially to air preheater cold end, for reducing the deformation of intermediate seal section
The stress of initiating terminal, described flat board passes through one section of arc with the other parts of corresponding leeward side protection board or weather protection board
Section connects.
As the restriction further of the sealing device axially or radially to air preheater cold end, for further enhancing above structure
The wind producing disturbs the intensity of effect, and described weather protection board is additionally provided with the projection of at least one section protuberance, and described projection is in
Corrugated, and the width of projection and sealing plate width in the same direction.Corrugated projection can pass through impeller above
Principle produces blast, with formed strong hinder leakage, simultaneously above corrugated convex form be easy to by deformation absorb to
The thermal stress that wind side protection board produces when being heated, and be unlikely to so that above thermal stress causes the excessive thermal deformation of intermediate seal plate
And affect the sealing effectiveness of above structure.
As the restriction further of the sealing device axially or radially to air preheater cold end, the use longevity based on above structure
Life, as a kind of be easy to draw materials, the comprehensive preferred version of the performance such as intensity, rigidity and wearability, described intermediate seal plate is thickness
Degree is between 2 to 4mm, the trade mark is the steel plate of 15CrMn, and described leeward side protection board and weather protection board are all by thickness
Q215 steel plate curving between 3 to 7mm forms, the described trade mark：15CrMn is derived from GB/T 3077-2006.
As the restriction further of the sealing device axially or radially to air preheater cold end, free for ease of intermediate seal plate
The position adjustment of end end, reaches the life-span of optimum and the preferred reality of leakage rate during the installation and debugging in order to above structure
Apply scheme, also include connecting bolt, described leeward side protection board, intermediate seal plate and weather protection board pass through connecting bolt phase
Even, and being used for the bolt hole that connecting bolt passes through on described intermediate seal plate is bar shaped bolt hole.
A kind of air preheater using above sealing structure, including rotor, the radial direction of described rotor cold end end face and/or
Air preheater cold end described in multiple one scheme of any of the above is respectively and fixedly provided with the axial direction of cold end side axially or radially
Each V-arrangement bayonet socket is respectively positioned on respective free side to sealing structure on sealing device, and cold end end face or/and cold end side.More than
The radial and axial slip of air preheater cold end of structure is little, simultaneously because the specific version of sealing structure, above air preheater
Fault rate low.
As the restriction further to above air preheater, for the benefit of stablize the rotation form of air preheater rotor, described cold end
Sealing structure on end face or/and cold end side is all annularly uniform around the axle center of rotor.
The invention has the advantages that：
The invention discloses a kind of air preheater and its cold end sealing device axially or radially, this sealing structure is used for installing
Radial direction in the cold end end of rotor or/and the axial direction of cold end side, with structure above in air preheater work process with rotor
Rotate.The intermediate seal plate of setting is used for forming a spoiler, is formed together with producing the wind effect of disturbing when rotor rotates
Brattice, hinders rotor cold end end face and the leakage of cold end axial direction, close with the axial direction of realizing the radial seal of rotor cold end and cold end
Envelope；The leeward side protection board of setting and weather protection board are mainly used in the fixation of intermediate seal plate and realize to middle sealing plate
Protection：In the rotation process of rotor, the free end end of the intermediate seal plate being stretched out by V-arrangement bayonet socket be located at V-arrangement bayonet socket it
Outer structure setting makes the partial Upwind stretched out with respect to V-arrangement bayonet socket edge, simultaneously during the mushroom deformation of rotor
The free end of intermediate seal plate is also possible to contact the even collision of generation frictional force, so, above mistake with fanning strip or stator interior
Journey make intermediate seal plate deformation during, the inwall of V-arrangement bayonet socket has supporting role to middle sealing plate, with disperse with
Upper intermediate seal becomes pressure thereon in deformation process, reaches the effect reducing local stress, by using in suitable material
Between sealing plate material, can achieve the rich sexual cycle examination that the above intermediate seal plate part being clamped in V-arrangement bayonet socket is more than million times
Test；Meanwhile, the bending section that the leeward side protection board of setting and weather protection board avoid as V-arrangement bayonet socket also has enhancing wind and disturbs
Effect, reach the purpose of strengthening axially or radially sealing property.
This sealing structure applies to cold end end face or cold end radial seal structure compared to tradition, because intermediate seal plate can
Contact formation with stator or fanning strip and directly isolate runner and realize sealing, coordinate the effect of disturbing of the wind of above-mentioned generation simultaneously so that this
Structure has good sealing, by limiting so that this structure also has longer service life to this planform.
Simultaneously the invention also discloses a kind of air preheater with above sealing structure, this air preheater cold end is radial and axial
Slip is little, simultaneously because the specific version of sealing structure, the fault rate of above air preheater is low.
Brief description
Fig. 1 for air preheater cold end of the present invention sealing device axially or radially in embodiment 1 and embodiment 3 and adopts
Structural side view and scheme of installation with the air preheater of this sealing structure；
Fig. 2 for air preheater cold end of the present invention sealing device axially or radially in embodiment 2 and embodiment 3 and adopts
Structural side view and scheme of installation with the air preheater of this sealing structure.
In figure labelling is respectively：1st, rotor, 2, leeward side protection board, 3, intermediate seal plate, 4, weather protection board, 41,
Projection, 5, V-arrangement bayonet socket, 6, connecting bolt.
Specific embodiment
The invention provides a kind of air preheater and its cold end sealing device axially or radially, for solving：Prior art
In due to air preheater rotor be located at one end of cold end deformation compared to one end deflection positioned at hot junction less, cold end simultaneously
Hot fluid have passed through heat release, hot-cold fluid does not absorb heat, and causes the design of the existing sealing structure to cold end or transforms power further
Degree is little, is unfavorable for the macroeconomic on-road efficiency of steam generator system and the problem of technology controlling and process.The structure being provided by the present invention is just
In reaching following technique effect：Sealing structure can achieve the radial and axial sealing of good air preheater rotor cold end, originally simultaneously
Sealing structure long service life；Less air leak rate of air curtain and fault rate are had using the air preheater of this sealing structure.
With reference to embodiment, the present invention is described in further detail, but the present invention is not limited only to following enforcement
Example：
Embodiment 1：
As shown in figure 1, air preheater cold end sealing device axially or radially, including sealing plate in the form of sheets, described sealing
Plate is the stepped construction being laminated by leeward side protection board 2, intermediate seal plate 3 and weather protection board 4, described intermediate seal
Plate 3 is fastened between leeward side protection board 2 and weather protection board 4, and the appointing of leeward side protection board 2 and weather protection board 4
Meaning side is respectively provided with one section of bending section, after leeward side protection board 2 and weather protection board 4 are laminated two sections of bending sections be respectively positioned on close
The homonymy of shrouding, and the bending direction of two bending sections is contrary, two bending sections constitute one along sealing plate length direction and
The outside V-arrangement bayonet socket 5 of opening direction, described intermediate seal plate 3 part is located in V-arrangement bayonet socket 5, and is stretched out by V-arrangement bayonet socket 5
Between sealing plate 3 free end end be located at V-arrangement bayonet socket 5 outside.
In the present embodiment, above structure is used for being arranged on the radial direction of cold end end of rotor 1 or/and the axle of cold end side
To being rotated with rotor 1 with structure above in air preheater work process.The intermediate seal plate 3 of setting is used for forming a flow-disturbing
Plate, forms one brattice to produce the wind effect of disturbing when rotor 1 rotates, hinders rotor 1 cold end end face and axial the letting out of cold end
Leakage, to realize the radial seal of rotor 1 cold end and the axial seal of cold end；The leeward side protection board 2 of setting and weather protection
Plate 4 is mainly used in the fixation of intermediate seal plate 3 and realizes the protection to middle sealing plate 3：In the rotation process of rotor 1, by V
Structure setting outside the free end end of the intermediate seal plate 3 that shape bayonet socket 5 stretches out is located at V-arrangement bayonet socket 5 makes with respect to V-arrangement card
The partial Upwind that mouth 5 edges stretch out, during the mushroom deformation of rotor 1, the free end of intermediate seal plate 3 is also possible to simultaneously
Contact generation frictional force even to collide with fanning strip or stator interior, so, above procedure makes intermediate seal plate 3 in deformation
During, the inwall of V-arrangement bayonet socket 5 has supporting role to middle sealing plate 3, to disperse above intermediate seal to become in deformation process
Pressure thereon, reach reduce local stress effect, by intermediate seal plate 3 material using suitable material, can achieve with
On be clamped in the rich sexual cycle test that intermediate seal plate 3 part in V-arrangement bayonet socket 5 is more than million times；Meanwhile, the leeward side of setting
The bending section that protection board 2 and weather protection board 4 avoid as V-arrangement bayonet socket also has and strengthens the effect that wind is disturbed, and reaches strengthening footpath
To or axial seal performance purpose.
In the present embodiment, as the preferred embodiment of above structure, it is set to by its side to another with upper sealing panel
Side width linearity increaseds or decreases, to adapt to the mushroom deformation of rotor 1 work process.
This structure applies to cold end end face or cold end radial seal structure compared to tradition, because intermediate seal plate 3 can be with
Stator or fanning strip contact are formed directly to be isolated runner and realizes sealing, coordinates the wind of above-mentioned generation to disturb simultaneously and acts on so that this knot
Structure has good sealing, by limiting so that this structure also has longer service life to this planform.
Embodiment 2：
The present embodiment is further qualified on the basis of embodiment 1, as shown in Fig. 2 as to air preheater cold end radially
Or the restriction further of the sealing device of axial direction, when being easily achieved as one kind, middle sealing plate 3 being deformed, there is good power and divide
Dissipate the leeward side protection board 2 of effect and the setting form of weather protection board 4 bending section shape, described bending section is to corresponding
Leeward side protection board 2 or the arc of weather protection board 4 curving, or described bending section be to corresponding leeward side protection
Plate 2 or the flat board of weather protection board 4 curving.
As the restriction further of the sealing device axially or radially to air preheater cold end, for reducing the deformation of intermediate seal section
The stress of initiating terminal, described flat board passes through one section of arc with the other parts of corresponding leeward side protection board 2 or weather protection board 4
Shape section connects.
As the restriction further of the sealing device axially or radially to air preheater cold end, for further enhancing above structure
The wind producing disturbs the intensity of effect, and described weather protection board 4 is additionally provided with the projection 41 of at least one section protuberance, described projection
41 is corrugated, and raised 41 width and sealing plate width in the same direction.Projection 41 corrugated above can be led to
The principle crossing impeller produces blast, is leaked with forming strong obstruction, above corrugated projection 41 form is easy to pass through simultaneously
Deformation absorbs the thermal stress producing when weather protection board 4 is heated, and is unlikely to so that above thermal stress causes intermediate seal plate 3
Excessive thermal deformation and affect the sealing effectiveness of above structure.
As the restriction further of the sealing device axially or radially to air preheater cold end, the use longevity based on above structure
Life, as a kind of be easy to draw materials, the comprehensive preferred version of the performance such as intensity, rigidity and wearability, described intermediate seal plate 3 is thickness
Degree is between 2 to 4mm, the trade mark is the steel plate of 15CrMn, and described leeward side protection board 2 and weather protection board 4 are all by thickness
Q215 steel plate curving between 3 to 7mm for the degree forms.
As the restriction further of the sealing device axially or radially to air preheater cold end, for ease of intermediate seal plate 3 from
By the position adjustment of end end, during the installation and debugging in order to above structure, reach the life-span of optimum and the preferred of leakage rate
Embodiment, also includes connecting bolt 6, and described leeward side protection board, intermediate seal plate 3 and weather protection board 4 pass through to connect
Bolt 6 is connected, and to be used for the bolt hole that passes through of connecting bolt 6 on described intermediate seal plate 3 be bar shaped bolt hole.
Embodiment 3：
Based on embodiment 1 or embodiment 2, as depicted in figs. 1 and 2, one kind is provided the present embodiment using above example
Sealing structure scheme air preheater, including rotor 1, the radial direction of described rotor 1 cold end end face and/or the axle of cold end side
Air preheater cold end described in multiple one scheme of any of the above sealing device axially or radially is respectively and fixedly provided with direction, and cold
Each V-arrangement bayonet socket 5 is respectively positioned on respective free side to sealing structure on end end face or/and cold end side.The air preheater of above structure
The radial and axial slip of cold end is little, simultaneously because the specific version of sealing structure, the fault rate of above air preheater is low.
As the restriction further to above air preheater, for the benefit of stablize the rotation form of air preheater rotor 1, described cold end
Sealing structure on end face or/and cold end side is all annularly uniform around the axle center of rotor 1.
Above content is the further description present invention made with reference to specific preferred implementation it is impossible to assert this
The specific embodiment of invention is confined to these explanations.For general technical staff of the technical field of the invention,
The other embodiment drawing under without departing from technical scheme, should be included in protection scope of the present invention.
Claims (6)
1. air preheater cold end sealing device axially or radially, including sealing plate in the form of sheets it is characterised in that described sealing plate
It is by leeward side protection board（2）, intermediate seal plate（3）With weather protection board（4）The stepped construction being laminated, described centre
Sealing plate（3）It is fastened on leeward side protection board（2）With weather protection board（4）Between, and leeward side protection board（2）With weather
Protection board（4）Any side be respectively provided with one section of bending section, in leeward side protection board（2）With weather protection board（4）After stacking
Two sections of bending sections be respectively positioned on sealing plate homonymy, and the bending direction of two bending sections is contrary, and two bending sections constitute an edge
Sealing plate length direction and the outside V-arrangement bayonet socket of opening direction（5）, described intermediate seal plate（3）Part is located at V-arrangement bayonet socket
（5）In, and by V-arrangement bayonet socket（5）The intermediate seal plate stretching out（3）Free end end be located at V-arrangement bayonet socket（5）Outside；Described to
Wind side protection board（4）On be additionally provided with least one section protuberance projection（41）, described projection（41）Corrugated and raised（41）
Width and sealing plate width in the same direction；
Also include connecting bolt（6）, described leeward side protection board（2）, intermediate seal plate（3）With weather protection board（4）Pass through
Connecting bolt（6）It is connected, and described intermediate seal plate（3）Above it is used for connecting bolt（6）The bolt hole passing through leads to for bar shaped bolt
Hole.
2. air preheater cold end according to claim 1 sealing device axially or radially is it is characterised in that described bending section
It is to corresponding leeward side protection board（2）Or weather protection board（4）The arc of curving, or described bending section is to right
The leeward side protection board answered（2）Or weather protection board（4）The flat board of curving.
3. air preheater cold end according to claim 2 sealing device axially or radially it is characterised in that described flat board with
Corresponding leeward side protection board（2）Or weather protection board（4）Other parts connected by one section of segmental arc.
4. air preheater cold end according to claim 1 sealing device axially or radially is it is characterised in that described centre is close
Shrouding（3）For thickness between 2 to 4mm, the steel plate for 15CrMn for the trade mark, described leeward side protection board（2）Protect with weather
Backplate（4）It is all that the Q215 steel plate curving between 3 to 7mm forms by thickness.
5. a kind of air preheater, including rotor（1）It is characterised in that described rotor（1）The radial direction of cold end end face and/or cold
Be respectively and fixedly provided with the axial direction of end side surface multiple as any one of air preheater cold end in Claims 1-4 radially or
The sealing device of axial direction, and the sealing structure each V-arrangement bayonet socket on cold end end face or/and cold end side（5）Be respectively positioned on respective from
By side.
6. a kind of air preheater according to claim 5, the sealing structure on described cold end end face or/and cold end side all around
Rotor（1）Axle center annularly uniform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228444.5A CN104791492B (en) | 2015-05-07 | 2015-05-07 | Air preheater and its cold end sealing device axially or radially |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228444.5A CN104791492B (en) | 2015-05-07 | 2015-05-07 | Air preheater and its cold end sealing device axially or radially |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104791492A CN104791492A (en) | 2015-07-22 |
| CN104791492B true CN104791492B (en) | 2017-03-08 |
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| CN201510228444.5A Active CN104791492B (en) | 2015-05-07 | 2015-05-07 | Air preheater and its cold end sealing device axially or radially |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110645359A (en) * | 2019-09-24 | 2020-01-03 | 航天科工哈尔滨风华有限公司电站设备分公司 | Mechanical self-correcting air preheater sealing device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3006537B2 (en) * | 1996-05-17 | 2000-02-07 | トヨタ自動車株式会社 | Seal structure between rotating member and fixed member |
| CN101788154A (en) * | 2009-12-04 | 2010-07-28 | 宁波市镇海福尔迅电梯部件厂 | Elastic sheet contact type sealing device of rotary air preheater |
| CN102705859A (en) * | 2011-03-28 | 2012-10-03 | 杨秋 | Flexible sealing device of rotary type air preheater |
| CN202203982U (en) * | 2011-08-04 | 2012-04-25 | 江苏鑫信润科技有限公司 | Depressing-type flexible sealing device |
| CN202546806U (en) * | 2012-02-20 | 2012-11-21 | 中国神华能源股份有限公司 | Seal brush used in rotary air preheater and rotary air preheater |
| CN204574098U (en) * | 2015-05-07 | 2015-08-19 | 四川东能节能技术有限公司 | The hermetically-sealed construction that air preheater and cold junction thereof are radial or axial |
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