CN205717301U - Spring elongation formula air preheat sealing device - Google Patents
Spring elongation formula air preheat sealing device Download PDFInfo
- Publication number
- CN205717301U CN205717301U CN201620591769.XU CN201620591769U CN205717301U CN 205717301 U CN205717301 U CN 205717301U CN 201620591769 U CN201620591769 U CN 201620591769U CN 205717301 U CN205717301 U CN 205717301U
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- Prior art keywords
- extension spring
- sealing
- seat
- sealing contact
- honour
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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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- Sealing Devices (AREA)
Abstract
This utility model relates to a kind of contact type sealing device, disclose a kind of spring elongation formula air preheat sealing device, including being in sealing contact plate, seal gripper shoe and extension spring mechanism, described plate and the sealing gripper shoe of being in sealing contact is by having the hinge joining means connection from position limiting structure, described extension spring mechanism includes the extension spring seat of honour, seat and extension spring under extension spring, under described extension spring, seat one end is fixedly connected in described sealing gripper shoe, under described extension spring, the seat other end is hinged with the described extension spring seat of honour, and the described extension spring seat of honour be used for limiting described in be in sealing contact plate and rotate, described extension spring two ends are connected with seat under the described extension spring seat of honour and extension spring by pin respectively.It is in sealing contact plate to contact with fanning strip and can effectively reduce leaking out of rotary regenerative air heater, even if the design using elasticity can make a concession formula makes rotor deform also can guarantee that relatively good sealing effectiveness；Use from position limiting structure, it is ensured that at limiting condition, tension spring inefficacy successor so can play sealing function.
Description
Technical field
This utility model relates to a kind of contact type sealing device, is mainly used in thermal power plant, oil, petrochemical industry etc. large-scale
Enterprise's supporting rotary regenerative air preheater of boiler, specifically a kind of spring elongation formula air preheat sealing device.
Background technology
Along with the increase of domestic thermal power generation unit single-machine capacity, conventional air preheater cannot meet development
Need.Rotary regenerative air preheater is because compact conformation, and floor space is little, in addition to saving metal consumption, also simplify boiler tail
The layout of portion's heating surface, is widely used on heavy duty boiler.
The leaking out of rotary regenerative air preheater mainly includes carrying leaks out and sealing leaks out two kinds.Due to rotatable parts and quiet
Having certain gap between stop part, inevitably bring partial air into flue gas in rotation process, this part is leaked out
It is referred to as carrying and leaks out, carry affected air leak rate of air curtain of leaking out and be usually no more than 1%.Owing to air side is malleation, it is negative pressure that flue gas is surveyed,
Under the effect of pressure reduction, air can leak in flue gas by sealing device, and this part is leaked out referred to as to seal and leaked out.Sealing is leaked out master
The precision of sealing device to be depended on and flue gas and the pressure reduction of air side, the good swinging air of design and installation is pre-
The sealing of hot device leaks out generally 8%～10%.Up to 20%～30% when leaking out serious.Leak out and not only can make heat loss due to exhaust gas
Increasing, electrical energy consumption of ventilation increases, and burner hearth combustion-supporting air quantity can be caused not enough, thus affect exerting oneself of boiler time serious.
The thermal deformation of rotary regenerative air preheater, rotary regenerative air preheater is when hot operation, and flue gas is transported from top to bottom
Dynamic, flue-gas temperature is gradually lowered.Air flows from bottom to top, and the temperature of air gradually steps up.Owing to hot end of rotor temperature is higher
And cold junction temperature is relatively low, making hot junction swell increment more than cold end swell increment, add the weight of rotor itself, rotor will occur mushroom
Mushroom shape deforms.Cold warm end temperature difference is the biggest, and mushroom deformation is the most serious, and the gap between rotor and sealing plate is the biggest, inleakage
Increase.
Utility model content
The purpose of this utility model is to overcome prior art to there is leaking out and the heat change of rotor of rotary regenerative air preheater
Shape defect, it is provided that a kind of spring elongation formula air preheat sealing device.
This utility model solves its technical problem and be the technical scheme is that a kind of spring elongation formula air preheat seals
Device, including being in sealing contact plate, sealing gripper shoe and extension spring mechanism, described in be in sealing contact plate and seal gripper shoe by have from
The hinge joining means of position limiting structure connects, and described extension spring mechanism includes seat and extension spring under the extension spring seat of honour, extension spring, and described draws
Under spring, seat one end is fixedly connected in described sealing gripper shoe, and under described extension spring, the seat other end is hinged with the described extension spring seat of honour,
And the described extension spring seat of honour be used for limiting described in be in sealing contact plate and rotate, described extension spring two ends respectively by pin with in described extension spring
Under seat and extension spring, seat connects.
As preferably, for reducing the extension spring seat of honour and the described abrasion being in sealing contact plate, improve device service life, described
The one end being in sealing contact plate described in the extension spring seat of honour is close is provided with roller, and described roller rolls even with the described plate that is in sealing contact
Connect.
Further, described hinge joining means includes alloy axle and axle sleeve, and described is in sealing contact plate and seals support
Be provided with described axle sleeve on plate, described in the axle sleeve that is in sealing contact on plate and the axle sleeve cross cap sealed in gripper shoe be located at described
On alloy axle.
As preferably, adjacent two described axle sleeves are provided with breach and the projection of button mutually.Mutual button mode is used to arrive
From position-limiting action, it is ensured that still can play sealing function after limiting condition tension spring loses efficacy.
Further, described axle sleeve is in sealing contact on the face that plate is relative with sealing gripper shoe described in being welded on.
As a kind of replacement of such scheme, described axle sleeve be welded on described in be in sealing contact bottom plate and seal gripper shoe
The same side, top.
As preferably, described is in sealing contact the plate hardness hardness less than the fanning strip of air preheater.Air preheater
Fanning strip replacement cost higher, be in sealing contact plate when contacting friction with the fanning strip of air preheater, pay the utmost attention to wear and tear close
Sealing-in touch panel, to reduce cost.
Further, being in sealing contact angle between plate and sealing gripper shoe described in is 90～180 °.It is intended that sealing
Contact plate (includes installing mushroom deformation in interference and air preheater operation with the fanning strip Interference contact formula of air preheater
Cause interference) it is in sealing contact plate and can effectively make a concession.
Further, the described extension spring seat of honour is in sealing contact plate bending away from one end of seat under described extension spring towards described.Draw
The spring seat of honour uses the design of above-mentioned semi-closed structure, it is ensured that extension spring does not haves down the phenomenon directly washed away, and carries
The high service life of extension spring.Extension spring uses the material of corrosion-and high-temp-resistant.
Beneficial effect: the plate that is in sealing contact of spring elongation formula air preheat sealing device of the present utility model connects with fanning strip
Touch and can effectively reduce leaking out of rotary regenerative air heater, also can even if the design using elasticity can make a concession formula makes rotor deform
Ensure relatively good sealing effectiveness.Simultaneously because its structure is relatively simple, metal consumption is little, lightweight, after mounting will not
The weight making air preheater rotor increases too much, therefore can reach more preferable energy-conservation effect relative to baroque sealing device
Really；
Use from position limiting structure during the hinge design of spring elongation formula air preheat sealing device of the present utility model, it is ensured that
Sealing function so can be played limiting condition tension spring inefficacy successor.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 be this utility model be embodiment 1 device free state structural representation；
Fig. 2 is hinge joining means structural representation；
Fig. 3 is that embodiment 1 device free state faces structural representation；
Fig. 4 is embodiment 1 device stress structural representation；
Fig. 5 is embodiment 2 device free state structural representation；
Fig. 6 is embodiment 2 device stress structural representation.
Wherein: 1. be in sealing contact plate, 2. seal gripper shoe, 3. seat under extension spring, 4. the extension spring seat of honour, 41. rollers, 5. extension spring,
6. pin, 7. axle sleeve, 8. alloy axle.
Detailed description of the invention
Embodiment 1
Such as Fig. 1, shown in 3 and 4, a kind of spring elongation formula air preheat sealing device, including being in sealing contact plate 1, sealing
Fagging 2 and extension spring mechanism, described in be in sealing contact plate 1 and seal gripper shoe 2 by having the hinge joining means from position limiting structure
Connect, described in be in sealing contact plate 1 and to seal angle between gripper shoe 2 be 90～180 °, described extension spring mechanism includes in extension spring
Seat 3 and extension spring 5 under seat 4, extension spring, under described extension spring, seat 3 one end is fixedly connected in described sealing gripper shoe 2, and described draws
Under spring, seat 3 other end is hinged with the described extension spring seat of honour 4, the described extension spring seat of honour 4 near described in be in sealing contact one end of plate 1 and arrange
Having a roller 41, described roller 41 rolls is connected with the described plate 1 that is in sealing contact, and described extension spring 5 two ends pass through pin 6 and institute respectively
State seat 3 under the extension spring seat of honour 4 and extension spring to connect.Described is in sealing contact plate 1 hardness hardness less than the fanning strip of air preheater.
Specifically, as in figure 2 it is shown, described hinge joining means includes that alloy axle 8 and axle sleeve 7, described axle sleeve 7 are welded on
Described be in sealing contact plate 1 and seal on the relative face of gripper shoe 2, described in the axle sleeve 7 that is in sealing contact on plate 1 and seal gripper shoe 2
On axle sleeve 7 cross cap be located on described alloy axle 8, adjacent two described axle sleeves 7 are provided with breach and the projection of mutually button, and in advance
Stay certain running clearance, formed above-mentioned from position limiting structure.
Principle is as follows: being arranged on the radial direction dividing plate of rotary regenerative air preheater by the application device, air preheater is sent out
During the shape that changes, being in sealing contact plate 1 and rotate along alloy axle 8, meanwhile, the extension spring seat of honour 4 rotates along seat under extension spring 3, and extension spring 5 enables to
Roller 41 moment on the extension spring seat of honour 4 is resisted against and is in sealing contact on plate 1, limits the rotation being in sealing contact plate 1, as shown in Figure 4；From
Position limiting structure ensure that so can play sealing function limiting condition tension spring 5 successor of losing efficacy.Extension spring mechanism structure simplifies, can
Lean on, may be designed to standard component and produce in advance, thus be greatly shortened process time, thus improve the construction quality reduction of erection time.
Embodiment 2
Be with embodiment 1 difference, as it can be seen in figures 5 and 6, described axle sleeve 7 be welded on described in be in sealing contact bottom plate 1 and
Sealing the same side, gripper shoe 2 top, the described extension spring seat of honour 4 is in sealing contact plate 1 away from one end of seat 3 under described extension spring towards described
Bending, other structures are with embodiment 1.The extension spring seat of honour 4 uses semi-closed structure to design, it is ensured that will not under extension spring 5 in working order
The phenomenon directly washed away occurs, improves the service life of extension spring 5.
Should be appreciated that specific embodiment described above is only used for explaining this utility model, be not used to limit this reality
With novel.The obvious change extended out by spirit of the present utility model or variation are still in protection of the present utility model
Among scope.
Claims (9)
1. a spring elongation formula air preheat sealing device, it is characterised in that: include being in sealing contact plate (1), sealing gripper shoe
(2) it is in sealing contact plate (1) described in and extension spring mechanism, and seals gripper shoe (2) and fill from the chain connection of position limiting structure by having
Putting connection, described extension spring mechanism includes seat (3) and extension spring (5), seat (3) one under described extension spring under the extension spring seat of honour (4), extension spring
End is fixedly connected on described sealing gripper shoe (2), and under described extension spring, seat (3) other end is hinged with the described extension spring seat of honour (4),
And the described extension spring seat of honour (4) be used for limiting described in be in sealing contact plate (1) and rotate, described extension spring (5) two ends are respectively by pin (6)
It is connected with seat (3) under the described extension spring seat of honour (4) and extension spring.
Spring elongation formula air preheat sealing device the most according to claim 1, it is characterised in that: the described extension spring seat of honour
(4) near described in be in sealing contact one end of plate (1) and be provided with roller (41), described roller (41) is in sealing contact plate with described
(1) connection is rolled.
Spring elongation formula air preheat sealing device the most according to claim 1, it is characterised in that: described chain connection fills
Putting and include alloy axle (8) and axle sleeve (7), described being in sealing contact in plate (1) and sealing gripper shoe (2) is provided with described axle sleeve
(7) axle sleeve (7) being in sealing contact described in, on plate (1) and axle sleeve (7) cross cap sealed in gripper shoe (2) are located at described alloy
On axle (8).
Spring elongation formula air preheat sealing device the most according to claim 3, it is characterised in that: adjacent two described axles
Set (7) is provided with breach and the projection of button mutually.
5. according to the spring elongation formula air preheat sealing device described in claim 3 or 4, it is characterised in that: described axle sleeve
(7) be welded on described in be in sealing contact plate (1) and seal on gripper shoe (2) relative face.
6. according to the spring elongation formula air preheat sealing device described in claim 3 or 4, it is characterised in that: described axle sleeve
(7) be welded on described in be in sealing contact plate (1) bottom and seal gripper shoe (2) the same side, top.
Spring elongation formula air preheat sealing device the most according to claim 1, it is characterised in that: described is in sealing contact
Plate (1) hardness is less than the hardness of the fanning strip of air preheater.
Spring elongation formula air preheat sealing device the most according to claim 1, it is characterised in that be in sealing contact plate described in:
And to seal angle between gripper shoe (2) be 90～180 ° (1).
Spring elongation formula air preheat sealing device the most according to claim 1, it is characterised in that: the described extension spring seat of honour
(4) it is in sealing contact plate (1) bending away from one end of seat (3) under described extension spring towards described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620591769.XU CN205717301U (en) | 2016-06-16 | 2016-06-16 | Spring elongation formula air preheat sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620591769.XU CN205717301U (en) | 2016-06-16 | 2016-06-16 | Spring elongation formula air preheat sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205717301U true CN205717301U (en) | 2016-11-23 |
Family
ID=57306901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620591769.XU Active CN205717301U (en) | 2016-06-16 | 2016-06-16 | Spring elongation formula air preheat sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205717301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910683A (en) * | 2018-09-27 | 2018-11-30 | 安徽江淮汽车集团股份有限公司 | A kind of Automatic-clamping hanger structure |
-
2016
- 2016-06-16 CN CN201620591769.XU patent/CN205717301U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910683A (en) * | 2018-09-27 | 2018-11-30 | 安徽江淮汽车集团股份有限公司 | A kind of Automatic-clamping hanger structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190422 Address after: 210000 two, B unit 300, Zhihui Road, Qilin science and Technology Innovation Park, Nanjing, Jiangsu. Patentee after: NANJING CHONON ENERGY-SAVING TECHNOLOGY CO., LTD. Address before: Room 208, Building 2, No. 1 Wenbo Road, Jiangning District, Nanjing City, Jiangsu Province Patentee before: Zhou Hui |