CN204240397U - Hinge-type air preheat sealing device - Google Patents
Hinge-type air preheat sealing device Download PDFInfo
- Publication number
- CN204240397U CN204240397U CN201420585767.0U CN201420585767U CN204240397U CN 204240397 U CN204240397 U CN 204240397U CN 201420585767 U CN201420585767 U CN 201420585767U CN 204240397 U CN204240397 U CN 204240397U
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- hinge
- baffle plate
- sealing device
- fixed head
- type 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
Abstract
A kind of hinge-type air preheat sealing device, it is characterized in that comprising contact baffle plate (2), hinge joining means (3), spring (4) and fixed head (5), described contact baffle plate (2) and fixed head (5) device (3) that is connected through the hinge is connected, and adds shock mount (4) and form elastic hinge device in hinge joining means (3).This hinge-type air preheat sealing device and fanning strip contact site use composite ceramic material wearing plate, greatly can improve the service life of sealing device, or extend working time by changing composite ceramic material wearing plate after reaching certain wear extent.
Description
Technical field
The utility model relates to a kind of contact type sealing device, and it is mainly used in the supporting rotary regenerative air preheaters of large enterprise's boiler such as thermal power plant, oil, petrochemical industry, specifically a kind of hinge-type air preheat sealing device.
Background technology
Along with the increase of domestic thermal power generation unit single-machine capacity, air preheater in the past cannot meet the needs of development.Rotary regenerative air preheater is because compact conformation, and floor space is little, except saving metal consumption, also simplify the layout of heated surface at the end of boiler, is widely used on heavy duty boiler.
The leaking out of rotary regenerative air preheater mainly comprises carrying leaks out and sealing leaks out two kinds.Owing to there being certain gap between rotatable parts and stationary parts, in rotation process, inevitably bring partial air into flue gas, this part leaks out and is called to carry and leaks out, and carrying leaks out generally is no more than 1%.Because air side is malleation, flue gas is surveyed as negative pressure, and under the effect of pressure reduction, air can bleed in flue gas by sealing device, and this part leaks out and is called that sealing is leaked out.Precision and flue gas that sealing leaks out depends primarily on sealing device and the pressure reduction of air side, the sealing of the rotary regenerative air preheater that design and installation are good is leaked out and is generally 8% ~ 10%.Can 20% ~ 30% be reached when leaking out serious.Leak out and heat loss due to exhaust gas not only can be made to increase, electrical energy consumption of ventilation increases, and can cause burner hearth combustion air quantity not sufficient, 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 moves from top to bottom, and flue-gas temperature reduces gradually.Air flows from bottom to top, and the temperature of air improves gradually.Because hot end of rotor temperature is higher, cold junction temperature is lower, and make hot junction swell increment be greater than cold junction swell increment, add the weight of rotor itself, rotor mushroom deformation will occur.Cold warm end temperature difference is larger, and mushroom deformation is more serious, and the gap between rotor and sealing plate is larger, and inleakage increases.
Summary of the invention
The utility model leaking out and the thermal deformation of rotor for rotary regenerative air heater, provides a kind of hinge-type air preheat sealing device, to overcome above-mentioned drawback.
The technical solution of the utility model is:
A kind of hinge-type air preheat sealing device, comprises contact baffle plate 2, hinge joining means 3, spring 4 and fixed head 5, and described contact baffle plate 2 and fixed head 5 device 3 that is connected through the hinge is connected, and adds shock mount 4 and form elastic hinge device in hinge joining means 3.
Composite ceramic material wearing plate 1 is equipped with in one end of described contact baffle plate 2, and composite ceramic material wearing plate 1 can be inlayed or be connected to contact baffle plate 2 top with bolt.
High-abrasive material is adopted between described hinge and spring.
Between described contact baffle plate 2 and fixed head 5, folded sharp angle is 15 ~ 20 degree.
Breach is offered, for the installation of spring 4 in described fixed head 5 sleeve position.
The length of described fixed head 5 near one end of contact baffle plate 2 exceedes contact baffle plate 2, and bends to the direction of contact baffle plate 2.
The length of described contact baffle plate 2 near one end of fixed head 5 exceedes fixed head 5, and bends to the direction of fixed head 5.
Spring works environment is comparatively severe, uses high performance material.The size of spring should control in rational scope, otherwise spring will be caused cannot to be mounted in hinge means.In sealing device, adopt the sealing baffle of different structure at the cold and hot end of air preheater, effectively can reduce dust stratification, the reliability of assurance device in running.
The beneficial effects of the utility model:
Use the sealing baffle of hinge-type air preheat sealing device of the present utility model to contact with fanning strip and can effectively reduce leaking out of rotary regenerative air heater, also can ensure sealing effectiveness relatively preferably even if the design adopting elasticity can make a concession formula makes rotor deform.Simultaneously because its structure is comparatively simple, metal consumption is little, lightweight, the weight of air preheater rotor can not be made after mounting to increase too much, therefore can reach better energy-saving effect relative to baroque sealing device.
Hinge-type air preheat sealing device of the present utility model and fanning strip contact site use composite ceramic material wearing plate, greatly can improve the service life of sealing device, or extend working time by changing composite ceramic material wearing plate after reaching certain wear extent.
During the Design of flexible hinges of hinge-type air preheat sealing device of the present utility model, spring is wrapped in wherein, high-temperature flue gas washing away it can be effectively reduced, its service life can be extended, the reliability of device is increased.
Accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram of cold end seal device of the present utility model.
Fig. 2 is the side structure schematic diagram of cold end seal device of the present utility model.
Fig. 3 is the planar structure schematic diagram of hot end seal device of the present utility model.
Fig. 4 is the side structure schematic diagram of hot end seal device of the present utility model.
Fig. 5 is the side structure schematic diagram of hinge of the present utility model.
Fig. 6 is the Facad structure schematic diagram of hinge of the present utility model.
Fig. 7 is the structure schematic diagram of hinge of the present utility model.
Fig. 8 is the structural representation of spring of the present utility model.
In figure, 1, be composite ceramic material wearing plate, 2, contact baffle plate, 3, be hinge joining means, 4, be spring, 5, be fixed head.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described:
As Fig. 1 to 8, a kind of hinge-type air preheat sealing device, comprise contact baffle plate 2, hinge joining means 3, spring 4 and fixed head 5, described contact baffle plate 2 and fixed head 5 device 3 that is connected through the hinge is connected, and adds shock mount 4 and form elastic hinge device in hinge joining means 3.
Composite ceramic material wearing plate 1 is equipped with in one end of contact baffle plate 2, and composite ceramic material wearing plate 1 can be inlayed or be connected to contact baffle plate 2 top with bolt.
High-abrasive material is adopted between hinge and spring.
Between contact baffle plate 2 and fixed head 5, folded sharp angle is 15 ~ 20 degree.
Breach is offered at fixed head 5 sleeve position, for the installation of spring 4.
Spring works environment is comparatively severe, uses high performance material.The size of spring should control in rational scope, otherwise spring will be caused cannot to be mounted in hinge means.In sealing device, adopt the sealing baffle of different structure at the cold and hot end of air preheater, effectively can reduce dust stratification, the reliability of assurance device in running.
The utility model is a kind of hinge-type air preheat sealing device, automatically can adjust according to different gaps, and whole device is made up of 3 parts: sealing baffle and support, hinge means and spring.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, Fig. 1, Fig. 2 are cold end seal device to concrete form, and Fig. 3, Fig. 4 are hot end seal device.The sealing baffle of cold and hot end uses different structures, and this can prevent dust stratification from causing the shortening in failure of apparatus or service life.
Embodiment one.
As shown in Figure 1, Figure 2, be cold end seal device, the length of fixed head 5 near one end of contact baffle plate 2 exceedes contact baffle plate 2, and bends to the direction of contact baffle plate 2.
Embodiment two.
As Fig. 3, Fig. 4, be hot end seal device, the length of contact baffle plate 2 near one end of fixed head 5 exceedes fixed head 5, and bends to the direction of fixed head 5.
Holder part upper design bends out and prevents overhead gage counter-rotating from playing sealing function simultaneously, overhead gage design angle 15 ~ 20 degree.The top of baffle plate contacts with the fanning strip of air preheater, and therefore top installs composite ceramic material wearing plate additional, and overall use weathering steel, baffle plate punches with holder part and is connected with hinge means.
The figure of hinge and spring as viewed in figures 5-8.
In spring hinge device, the length of spring 2 should control reasonable length otherwise cannot install, and second plate 5 sleeve position gap 4 of hinge facilitates the installation of spring.During installation, spring is placed in the curved hole of hinge inner and connects with axle, time pan can encase spring, extend its service life under high-temperature work environment, during installation, to be placed on the reel of hinge interior and be fixedly connected with axle for spring.
The form of spring is as Fig. 8, and spring uses Special spring, high temperature resistant and corrosion, and when bending spring, the choosing of left and right fills every difference, processes respectively, and the length of spring should control rationally otherwise cause and cannot install.
The utility model is a kind of contact type sealing device, is arranged on the radial dividing plate of rotary regenerative air preheater.The main contents of utility model are at the composite ceramic material wearing plate of elastic hinge device and baffle plate, and hinge uses materials processing that is high temperature resistant and corrosion, and branch sleeve machine for bending into circle bends and forms; Spring makes separately, same adopts high-temperature corrosion resistance material, and during installation, spring to be placed in sleeve and to be fixedly connected with axle.
Elastic hinge device is as Fig. 5,6,7, and use bolt to be connected with support and baffle plate, structure is simplified reliably.Elastic hinge device can be designed to standard room and produce in advance, thus greatly shortens process time, thus improves the construction quality reduction of erection time.
Embodiment recited above is only be described preferred embodiment of the present utility model; not design of the present utility model and scope are limited; do not departing under the utility model design concept prerequisite; the various modification that in this area, common engineers and technicians make the technical solution of the utility model and improvement; all should fall into protection domain of the present utility model, the technology contents of the utility model request protection is all recorded in detail in the claims.
Claims (7)
1. a hinge-type air preheat sealing device, it is characterized in that comprising contact baffle plate (2), hinge joining means (3), spring (4) and fixed head (5), described contact baffle plate (2) and fixed head (5) device (3) that is connected through the hinge is connected, and adds shock mount (4) and form elastic hinge device in hinge joining means (3).
2. hinge-type air preheat sealing device according to claim 1, it is characterized in that composite ceramic material wearing plate (1) is equipped with in one end of described contact baffle plate (2), composite ceramic material wearing plate (1) can be inlayed or be connected to contact baffle plate (2) top with bolt.
3. hinge-type air preheat sealing device according to claim 1, is characterized in that adopting high-abrasive material between described hinge and spring.
4. hinge-type air preheat sealing device according to claim 1, is characterized in that between described contact baffle plate (2) and fixed head (5), folded sharp angle is 15 ~ 20 degree.
5. hinge-type air preheat sealing device according to claim 1, is characterized in that breach is offered at described fixed head (5) sleeve position, for the installation of spring (4).
6. hinge-type air preheat sealing device according to claim 1, it is characterized in that the length of described fixed head (5) near one end of contact baffle plate (2) exceedes contact baffle plate (2), and bend to the direction of contact baffle plate (2).
7. hinge-type air preheat sealing device according to claim 1, it is characterized in that the length of described contact baffle plate (2) near one end of fixed head (5) exceedes fixed head (5), and bend to the direction of fixed head (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585767.0U CN204240397U (en) | 2014-04-10 | 2014-10-10 | Hinge-type air preheat sealing device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173743 | 2014-04-10 | ||
| CN2014201737434 | 2014-04-10 | ||
| CN201420585767.0U CN204240397U (en) | 2014-04-10 | 2014-10-10 | Hinge-type air preheat sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204240397U true CN204240397U (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420585767.0U Active CN204240397U (en) | 2014-04-10 | 2014-10-10 | Hinge-type air preheat sealing device |
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| CN (1) | CN204240397U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900099A (en) * | 2014-04-10 | 2014-07-02 | 周惠 | Hinge type air preheating sealing device |
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2014
- 2014-10-10 CN CN201420585767.0U patent/CN204240397U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900099A (en) * | 2014-04-10 | 2014-07-02 | 周惠 | Hinge type air preheating sealing device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |