CN206787374U - A kind of air preheater spring lifts sealing device certainly - Google Patents
A kind of air preheater spring lifts sealing device certainly Download PDFInfo
- Publication number
- CN206787374U CN206787374U CN201720654012.5U CN201720654012U CN206787374U CN 206787374 U CN206787374 U CN 206787374U CN 201720654012 U CN201720654012 U CN 201720654012U CN 206787374 U CN206787374 U CN 206787374U
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- CN
- China
- Prior art keywords
- spring
- plate
- air preheater
- sealing
- rebound
- Prior art date
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Abstract
It the utility model is related to a kind of air preheater spring and lift sealing device certainly, including sealing baffle, spring, spring base, fanning strip and backing plate, reduction plate is provided between the sealing baffle and backing plate, the reduction plate is provided with latch plate and mounting hole, the sealing baffle is connected with backing plate by studs, the studs is in mounting hole, the spring base is fixed on sealing baffle, spring is provided between the latch plate and spring base, the fanning strip is provided with rebound, and the rebound section is triangle.For the utility model in sealing, mounting hole enables reduction plate to move larger stroke, when reduction plate passes through rebound, compression spring, makes reduction plate and fanning strip good contact, reaches optimal sealing effectiveness.
Description
Technical field
The utility model belongs to Air Preheater Technology field, and in particular to a kind of air preheater spring fills from sealing is lifted
Put.
Background technology
Air preheater is exactly flue gas in boiler back end ductwork by the fin of inside by the air before entering boiler
The heating surface of certain temperature is preheating to, for improving the heat exchange performance of boiler, reduces energy expenditure.
Air preheater is commonly abbreviated as air preheater, is used for coal-fired power station boiler, can be divided into box type, swinging two
Kind.Wherein, swinging is divided into two kinds of fan housing swinging and heating surface swinging again.Station boiler is compared with frequently with heating surface swinging
Empty preheater.Rotary regenerative air preheater is turned over and heat is transmitted into one, two after certain angle using high-temperature flue gas heating sheet metal
Secondary wind, so that the air themperature into burner hearth rises.
Under hot running status, each part of air preheater can expand rotary regenerative air heater because heated, turn
Son can become mushroom, and the gap between rotor and fanning strip, arc can change, and most of gap can all diminish, only hot
End radially can become big in about 2/3rds sections of gaps between fan plate and diaphragm seal., will if gap is excessive under hot running status
Air leak rate of air preheater is caused to increase, if too small, it would be possible to cause air preheater stuck.The air leak rate of air curtain of air preheater
It is an important factor for influenceing boiler operating efficiency, so the sealing between air and flue gas, it appears particularly important.Swinging is empty pre-
The sealing means of device mainly have：Adjustable sealing, fixed sealing, contact seal etc..Flexible contact type seals, and having will not
Seal clearance is formed, the advantages of good sealing effect, but existing flexible contact type seals, and stroke is shorter, it is impossible to meets actual work
Condition requirement, while device rapid wear.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of air preheater spring fills from sealing is lifted
Put.
In order to achieve the above object, the utility model employs following technical proposal：
A kind of air preheater spring lifts sealing device, including sealing baffle, spring, spring base, fanning strip and backing plate, institute certainly
State and reduction plate is provided between sealing baffle and backing plate, the reduction plate is provided with latch plate and mounting hole, the sealing baffle and pad
Plate is connected by studs, and the studs is in mounting hole, and the spring base is fixed on sealing baffle, the bullet
Spring is provided between spring plank and spring base, the fanning strip is provided with rebound, and the rebound section is triangle.
Preferably, the reduction plate is provided with one or more mounting holes.
Preferably, the reduction plate is higher by fanning strip 1-20mm.
Preferably, the reduction plate is provided with transition face.
Preferably, the fanning strip with rebound by being weldingly connected.
The utility model has advantages below：
For the utility model in sealing, reduction plate can move larger stroke, disclosure satisfy that the larger work of seal clearance
Condition.Meanwhile the setting of rebound avoids reduction plate and directly contacted with fanning strip, reduces the abrasion of reduction plate.
Brief description of the drawings
Fig. 1 is the utility model sealed structural representation.
Fig. 2 is reduction plate structure schematic diagram.
Reference：1 is reduction plate, and 2 be sealing baffle, and 3 be backing plate, and 4 be studs, and 5 be spring, and 6 be fanning strip,
7 be rebound, and 11 be latch plate, and 12 be mounting hole, and 21 be spring base.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
Embodiment 1：A kind of air preheater spring as shown in Figure 1 from lifting sealing device, including sealing baffle 2, spring 5,
Spring base 21 and fanning strip 6, it is characterised in that：Also include backing plate 3, reduction plate 1 be provided between the sealing baffle 2 and backing plate 3,
The reduction plate 1 is provided with latch plate 11 and mounting hole 12, and the sealing baffle 2 is connected with backing plate 3 by studs 4, described
In mounting hole 12, the spring base 21 is fixed on sealing baffle 2 studs 4, the latch plate 11 and spring base 21
Between be provided with spring 5, the fanning strip 6 is provided with rebound 7, and the section of rebound 7 is triangle.
In the air preheater course of work, when reduction plate 1 contacts with rebound 7, reduction plate 1 is by the downward effect of rebound 7
Power, the mounting hole 12 on reduction plate 1 move downward in studs 4, when reduction plate 1 reaches 7 lowest part of rebound, reduction plate
1 contacts with fanning strip 6, forms sealing.During sealing, mounting hole 12 enables reduction plate 1 to move larger stroke, while rebound
7 avoid reduction plate 1 from directly being contacted with fanning strip 6, so as to slow down the abrasion of reduction plate 1.
Embodiment 2：A kind of air preheater spring as shown in Figure 1 from lifting sealing device, including sealing baffle 2, spring 5,
Spring base 21 and fanning strip 6, it is characterised in that：Also include backing plate 3, reduction plate 1 be provided between the sealing baffle 2 and backing plate 3,
The reduction plate 1 is provided with latch plate 11 and mounting hole 12, and the sealing baffle 2 is connected with backing plate 3 by studs 4, increase
Stability and intensity；The studs 4 is in mounting hole 12, and the spring base 21 is fixed on sealing baffle 2, the bullet
Spring 5 is provided between spring plank 11 and spring base 21, the fanning strip 6 is welded with rebound 7, and the section of rebound 7 is triangle
Shape.The reduction plate 1 is provided with multiple mounting holes 12, and is provided with multiple studs 4 matched with mounting hole 12, to increase intensity
With stability, the reduction plate 1 is higher by fanning strip 6, can be set in as requested within 1-20mm.The reduction plate 1 was provided with
Face is crossed, further reduces abrasion.
After studs 4 compresses, reduction plate 1 leaves the gap of very little between sealing baffle 2 and backing plate 3, is easy to reduction
After plate 1 contacts with rebound 7, force compresses spring 5 can be acted downwards, so that reduction plate 1 effectively contacts with fanning strip, is reached
To sealing.
The utility model is not limited to foregoing embodiment.The utility model expands to any in this specification
The new feature of middle disclosure or any new combination, and disclose any new method or process the step of or any new group
Close.
Claims (5)
1. a kind of air preheater spring lifts sealing device, including sealing baffle (2), spring (5), spring base (21) and fanning strip certainly
(6), it is characterised in that：Also include backing plate (3), reduction plate (1), the liter are provided between the sealing baffle (2) and backing plate (3)
Contracting plate (1) is provided with latch plate (11) and mounting hole (12), and the sealing baffle (2) is connected with backing plate (3) by studs (4)
Connect, the studs (4) is in mounting hole (12), and the spring base (21) is fixed on sealing baffle (2), the spring
Spring (5) is provided between plate (11) and spring base (21), the fanning strip (6) is provided with rebound (7), and the rebound (7) is disconnected
Face is triangle.
2. a kind of air preheater spring according to claim 1 lifts sealing device certainly, it is characterised in that：The reduction plate
(1) one or more mounting holes (12) are provided with.
3. a kind of air preheater spring according to claim 1 lifts sealing device certainly, it is characterised in that：The reduction plate
(1) it is higher by fanning strip baseplane 1-20mm.
4. a kind of air preheater spring according to claim 1 lifts sealing device certainly, it is characterised in that：The reduction plate
(1) it is provided with transition face.
5. a kind of air preheater spring according to claim 1 lifts sealing device certainly, it is characterised in that：The fanning strip
(6) with rebound (7) by being weldingly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720654012.5U CN206787374U (en) | 2017-06-07 | 2017-06-07 | A kind of air preheater spring lifts sealing device certainly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720654012.5U CN206787374U (en) | 2017-06-07 | 2017-06-07 | A kind of air preheater spring lifts sealing device certainly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206787374U true CN206787374U (en) | 2017-12-22 |
Family
ID=60715472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720654012.5U Expired - Fee Related CN206787374U (en) | 2017-06-07 | 2017-06-07 | A kind of air preheater spring lifts sealing device certainly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206787374U (en) |
-
2017
- 2017-06-07 CN CN201720654012.5U patent/CN206787374U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 610000, 25 B6, 1 times digital building, four section, Renmin South Road, Wuhou District, Sichuan, Chengdu Patentee after: Sichuan Dazhi Electric Power Co.,Ltd. Address before: 610000, 25 B6, 1 times digital building, four section, Renmin South Road, Wuhou District, Sichuan, Chengdu Patentee before: SICHUAN WISDOM ENGINEERING TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |