CN207065618U - Boiler air preheater hot junction radial seal compensation device - Google Patents
Boiler air preheater hot junction radial seal compensation device Download PDFInfo
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- CN207065618U CN207065618U CN201720127125.XU CN201720127125U CN207065618U CN 207065618 U CN207065618 U CN 207065618U CN 201720127125 U CN201720127125 U CN 201720127125U CN 207065618 U CN207065618 U CN 207065618U
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- sealing
- air preheater
- sliding block
- rotor
- compensation piece
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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 discloses boiler air preheater sealing device, especially disclose boiler air preheater hot junction radial seal compensation device, boiler air preheater hot junction radial seal compensation device is arranged on the rotor compartment radial direction dividing plate of air preheater, to be sealed to radial direction dividing plate and fanning strip, including some radial direction dividing plates installed in rotor compartment, it is provided with sealing baffle and sealing compensation piece, fixed respectively by fixed sliding block and strap with bolt, sliding block is fixed in operation to be located at behind sealing compensation piece, slided each other between the fixed sliding block and sealing compensation piece, the fixed sliding block is bolted on radial direction dividing plate.Under unit cold conditions, sealing compensation piece and fanning strip flexible micro-contact, sealing baffle and fan-shaped sheet separation are zero, there are sagging deflections in rotor during unit hot operation, fixed sliding block and sealing baffle are with the relative slide displacement of rotor, and then the distance between change sealing compensation piece and rotor, maintenance sealing compensation piece do not decline with rotor deformation, sealing compensation piece and fanning strip contact position is kept constant, the device in unit cold conditions, hot lower can keep constant with the gap of fanning strip.The utility model, which has, wears the advantages of small, air leak rate of air curtain is low, easy for installation, reliability is high.
Description
Technical field
The utility model discloses a kind of boiler air preheater sealing device, and it is radially close in particular disclose boiler air preheater hot junction
Compensation device is sealed, belongs to water-tight equipment technical field.
Background technology
Boiler air preheater is a kind of heat-exchange apparatus for large-sized boiler, in the industry abbreviation air preheater, critical piece
It is rotor, rotor divides the rotor into several lattice storehouses by multiple radial direction dividing plates and ring dividing plate, places heat exchange element in lattice storehouse, turn
The heat exchange between flue gas and air is realized by heat exchange element during son rotation, installed on rotor radial dividing plate radial and axial close
Mounting.Cold end apex seal and bottom fanning strip, hot junction apex seal and top fanning strip, axial seal piece and arc
The distance of very little, the sealing formed between flue gas and air are contacted or kept in hot operation.It is empty under hot running status
Pre- each part of device can expand because heated, and rotor can become mushroom, the gap between rotor and fanning strip, arc
It can change, if seal clearance is excessive, empty pre- air leak rate of air curtain will be caused very big, if gap is too small, it would be possible to cause empty pre-
Device is stuck, therefore air preheater air leakage rate is lower, and boiler efficiency is higher, and boiler efficiency is improved by transforming air preheater, is very
Economical and effective method.
Boiler air preheater Sealing Technology is at home in transformation process, common method have fixed sealing, adjustable sealing,
The sealing of spring hinge formula, elastic contact type sealing and brush seal.Structure be present and answer in the air preheater sealing transformed at present according to statistics
Miscellaneous cost is high, service life is short, and air leak rate of air curtain is high after being worn for a long time with fanning strip and sealing and reliability are relatively low, causes the later stage
Whole set replacement expense is higher, less economical.
Utility model content
The purpose of the utility model is that solve the problems, such as air preheater air leakage, the defects of overcoming existing Sealing Technology, there is provided one kind mill
Damage boiler air preheater hot junction radial seal compensation device small, that air leak rate of air curtain is low.
The utility model is that following technical scheme is realized；
A kind of boiler air preheater hot junction radial seal compensation device, the boiler air preheater hot junction radial seal compensation device
On the rotor compartment radial direction dividing plate of air preheater, to be sealed to radial direction dividing plate and fanning strip, including installed in turn
Some radial direction dividing plates of sub- compartment, are provided with sealing baffle and sealing compensation piece, respectively by fixed sliding block and strap and spiral shell
Bolt is fixed, and sliding block is fixed in operation and is located at behind sealing compensation piece, is slided each other between the fixed sliding block and sealing compensation piece,
The fixed sliding block is bolted on radial direction dividing plate.Using this programme, in unit operation, rotor is hot there is sagging change
During shape, sealing compensation piece does not decline with rotor deformation, keeps sealing compensation piece and fanning strip is micro- contacts.According to rotor rotation side
To installation sealing baffle, sealing baffle is installed before sealing compensation piece, formd in unit operation before sealing compensation piece together
Brattice, the brattice, which can stop, to be leaked out, and has flow-disturbing effect, and further control is leaked out.In addition, the utility model sealing device, by
In simple in construction, easy for installation, the present situation of sealing can not be adjusted by revolutionizing short time blowing out in the prior art.
One end that the sealing compensation piece contacts with fanning strip is bending structure, keeps sealing is micro- to connect under unit cold and hot
Tactile, zero clearance, region of not leaking out, can not be leaked.
Using mutual slide construction between fixed sliding block and sealing compensation piece, adapt to caused by air preheater rotor dividing plate
" mushroom " thermal deformation, upper and lower displacement is unrestricted, sealing compensation piece is kept constant with fanning strip contact position.
Superior effect described in the utility model is：
The utility model changes the shortcomings that diaphragm seal after fanning strip abrasion with causing to leak out in the prior art, due to structure
Simply, easy for installation, the present situation of sealing can not be adjusted by revolutionizing short time blowing out in the prior art, and the utility model uses
Mutual slide construction between sealing compensation piece and fixed sliding block, upper and lower displacement is unrestricted, adapts to caused by air preheater rotor
" mushroom " thermal deformation, unit cold conditions, it is hot it is lower can keep constant with the gap of fanning strip, it is negative in difference to adapt to air preheater
Deflection under lotus operating mode, while fanning strip serious wear is avoided, increase the service life so as to reduce air preheater air leakage, improve pot
The efficiency of furnace.
Brief description of the drawings
Fig. 1 is boiler air preheater hot junction radial seal compensation device structural representation
Fig. 2 is boiler air preheater hot junction radial seal compensation device cold conditions gap figure
Fig. 3 is the hot gap figure of boiler air preheater hot junction radial seal compensation device
1- radial direction dividing plate 2- fanning strip 3- sealing baffle 4- sealing compensations piece 5 fixes the strap of sliding block 6
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail；
Boiler air preheater hot junction radial seal compensation device as shown in Figure 1, the boiler air preheater hot junction radial seal are mended
Device is repaid on the rotor compartment radial direction dividing plate 1 of air preheater, to be sealed to radial direction dividing plate 1 and fanning strip 2, including
Installed in some radial direction dividing plates 1 of rotor compartment, sealing baffle 3 and sealing compensation piece 4 are provided with, respectively by the fixed He of sliding block 5
Strap 6 is fixed with bolt, and sliding block 5 is fixed in operation and is located at behind sealing compensation piece 4, and the fixed sliding block 5 is mended with sealing
Repay and slide each other between piece 4, the fixed sliding block 5 is bolted on radial direction dividing plate 1.
Exemplary, strap 6 is installed according to rotor expansion dead-center position, sealing compensation piece 4 and sealing baffle 3 are divided
End bolt not with radial direction dividing plate 1 is fixed, and its position installation fixing seal compensating plate 4, which has, takes root a little, the sagging change in rotor outer end
During shape, sealing compensation piece 4 is maintained not decline with rotor deformation, keeping micro- with fanning strip 2 all the time contacts, and makes the leakage gap be
Zero.Using sealing baffle 3 is installed before sealing compensation piece 4, following effect can be played；One of wind is formd in the case where operation is hot
Wall, the brattice, which can stop, to be leaked out, and the further control that seals is leaked out.
The hot junction radial seal compensation device cold conditions of boiler air preheater shown in Fig. 2 gap figure, under unit cold conditions or underload
Period, gap very little between the sealing baffle 3 and fanning strip 2, one end that sealing compensation piece 4 contacts with fanning strip 2 are tied for bending
Structure, flexible micro-contact, zero clearance, region of not leaking out.
The hot running status figure of the hot junction radial seal of boiler air preheater shown in Fig. 3 compensation device, during unit heavy-duty service,
When rotor dividing plate expanded by heating " mushroom " produces thermal deformation, fixed sliding block 5 moves down with sealing baffle 3 with rotor radial dividing plate
Mutually slided between sealing compensation piece 4, upper and lower displacement is unrestricted, and sealing compensation piece 4 is kept not with the contact position of fanning strip 2
Become, the air leak rate of air curtain of air preheater can be greatly reduced.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, although ginseng
The utility model is described in detail according to previous embodiment, for those skilled in the art, it still can be with
Technical scheme described in foregoing embodiments is modified, or equivalent substitution is carried out to which part technical characteristic, it is all
Within the spirit and principles of the utility model, any modification, equivalent substitution and improvements made etc., this practicality should be included in
Within new protection domain.
Claims (3)
1. boiler air preheater hot junction radial seal compensation device, it is characterised in that；The boiler air preheater hot junction radial seal is mended
Device is repaid on the rotor compartment radial direction dividing plate (1) of air preheater, is made with playing sealing to radial direction dividing plate (1) and fanning strip (2)
With；Including some radial direction dividing plates (1) installed in rotor compartment, sealing baffle (3) and sealing compensation piece (4) are provided with, respectively
Fixed by fixed sliding block (5) and strap (6) with bolt, sliding block (5) fixed in operation and is located at behind sealing compensation piece (4),
Slided each other between the fixed sliding block (5) and sealing compensation piece (4), the fixed sliding block (5) is bolted on radially
On dividing plate (1).
2. radial seal compensation device in boiler air preheater hot junction according to claim 1, it is characterised in that：The sealing is mended
It is bending structure to repay one end that piece (4) contacts with fanning strip (2).
3. radial seal compensation device in boiler air preheater hot junction according to claim 1, it is characterised in that：It is described fixed sliding
Block (5) is " shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720127125.XU CN207065618U (en) | 2017-02-07 | 2017-02-07 | Boiler air preheater hot junction radial seal compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720127125.XU CN207065618U (en) | 2017-02-07 | 2017-02-07 | Boiler air preheater hot junction radial seal compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207065618U true CN207065618U (en) | 2018-03-02 |
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ID=61501735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720127125.XU Active CN207065618U (en) | 2017-02-07 | 2017-02-07 | Boiler air preheater hot junction radial seal compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207065618U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489063A (en) * | 2018-11-05 | 2019-03-19 | 李暐 | Rotary regenerative air preheater encapsulating method, self-compensation sealed part and air preheater |
| CN111351066A (en) * | 2018-12-21 | 2020-06-30 | 三菱日立电力系统株式会社 | Sealing structure for boiler, and method for operating boiler |
-
2017
- 2017-02-07 CN CN201720127125.XU patent/CN207065618U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489063A (en) * | 2018-11-05 | 2019-03-19 | 李暐 | Rotary regenerative air preheater encapsulating method, self-compensation sealed part and air preheater |
| CN111351066A (en) * | 2018-12-21 | 2020-06-30 | 三菱日立电力系统株式会社 | Sealing structure for boiler, and method for operating boiler |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201030 Address after: Room 416, building 2, century building, No. 5, shuixiguan South Street, Yingze District, Taiyuan City, Shanxi Province Patentee after: SHANXI CHANGDE DACHENG TECHNOLOGY Co.,Ltd. Address before: 030041, No. 3, unit 26, 25 floor, two power plant, pointed lawn, Taiyuan, Shanxi Patentee before: Li Yanwu |