CN203024178U - Lever type sealing device of air preheater - Google Patents
Lever type sealing device of air preheater Download PDFInfo
- Publication number
- CN203024178U CN203024178U CN2012207319476U CN201220731947U CN203024178U CN 203024178 U CN203024178 U CN 203024178U CN 2012207319476 U CN2012207319476 U CN 2012207319476U CN 201220731947 U CN201220731947 U CN 201220731947U CN 203024178 U CN203024178 U CN 203024178U
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- China
- Prior art keywords
- lever
- step shaft
- air preheater
- sealing plate
- type sealing
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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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Abstract
The utility model discloses a lever type sealing device of an air preheater, which comprises an inclined sealing plate, a fixing plate, a step shaft and a lever adjusting device, wherein the inclined sealing plate is fixed by connecting the inner side surface with the fixing plate through a hinge; the step shaft and the lever adjusting device are arranged at the two ends of the inclined sealing plate respectively; the step shaft is fixedly connected with the fixing plate; the lever adjusting device comprises a lever, a counterweight, a support head, a limiting block, a nut and a positioning nut; the middle part of a lever is mounted on the step shaft; one end of the lever is connected with the support head, and the counterweight and the positioning nut are arranged at the other end of the lever; and the limiting block is clamped on the step shaft on the outer side of the lever through a nut. A wear-resistant ceramic plate on the inclined sealing plate can contact with a sector plate in the whole rotation process. The lever type sealing device disclosed by the utility model has the advantages of good sealing effect, good wear resistance, long service life, fitness for large-scale production, convenience in field mounting, short construction period and the like, and is most suitable for radial sealing of a rotary air preheater of a large boiler.
Description
Technical field
The utility model relates to the lever sealing device of a kind of sealing device, particularly air preheater, belongs to the rotary regenerative air preheater field.
Background technology
Rotary regenerative air preheater is widely used on station boiler as the heat-exchange apparatus of large-sized boiler, and it is that the flue gas heat of utilizing boiler to discharge comes preheating to enter the required air of boiler participation burning, thereby improves the efficient of boiler.The air leak rate of air curtain of air preheater is the important indicator that affects boiler efficiency, air leak rate of air curtain is high, with reduction give, the exerting oneself of air-introduced machine, power consumption strengthens, and has also reduced heat exchanger effectiveness simultaneously, thereby has affected boiler efficiency, therefore effectively control the air leak rate of air curtain of air preheater, can reduce power consumption, improve boiler efficiency, reach energy-conservation good result.Air preheater is normally in hot lower operation, and each parts can deform because being heated, and rotor can become mushroom cloud-like, and the gap changes, and most of gap can diminish.If it is large that the gap between rotor and stator becomes, may cause air leak rate of air preheater to increase, if gap smaller may cause air preheater stuck.So the Sealing Technology of air preheater is particularly important, only have the rational Sealing Technology of employing, could effectively control the air leak rate of air curtain of air preheater, improve boiler efficiency, reduce energy consumption.The apex combustion seal of existing air preheater generally adopts rigid seal, obviously exists the rate of wear fast, the critical defect that poor sealing performance and service life are short.
Summary of the invention
The purpose of this utility model is in order to overcome the weak point of above-mentioned existing apex combustion seal, to design a kind of good seal performance, and anti-wear performance is good, the air preheater lever sealing device of long service life.
air preheater lever sealing device of the present utility model, comprise the inclined type sealing plate, fixed head, Step Shaft and lever adjusting device, described inclined type sealing plate be fixedly to be connected with fixed head through hinge by its medial surface, Step Shaft and lever adjusting device are equipped with respectively in the two that it is characterized in that the inclined type sealing plate, described Step Shaft is fixedly connected with fixed head, lever adjusting device comprises lever, balancing weight, supporting member, limited block, nut and setscrew nut, wherein the lever middle part is arranged on Step Shaft, lever one end is connected with supporting member, the lever other end is equipped with balancing weight and setscrew nut, limited block is contained on the Step Shaft in the lever outside by nut clip.
Balancing weight on described lever is arranged on lever by screw thread, and setscrew nut is arranged on the lever of balancing weight one side, makes the balancing weight location after adjustment.The position of adjusting balancing weight on lever makes supporting member just right to the support force of inclined type sealing plate.In order to improve service life, can be installed with abrasion-proof ceramic block on the lateral surface of inclined type sealing plate.
air preheater lever sealing device of the present utility model, during installation, with the inclined plane of inclined type sealing plate corresponding to rotation direction, fixed head is arranged on the rotor of air preheater with bolt, utilize lever principle, the lever long end of balancing weight is housed, because its short end supporting member being lifted naturally be supported on inclined type sealing plate medial surface from great and sagging, inclined type sealing plate (the curved position-limiting action that rises under the rear end) is supported to original state, when the inclined type sealing plate begins to contact with fanning strip, its contact-making surface is an inclined-plane, can guarantee the effect that all has buffering when any position on the inclined-plane contacts with fanning strip, after contact, the inclined type sealing plate top that its contact point slides into along the inclined-plane, the supporting member of the lever short end in this process is progressively pressed down, and the balancing weight of lever long end slowly lifts.The inclined type sealing plate that the top studs with abrasion-proof ceramic block slides on fanning strip, makes the very little gap of script between inclined type sealing plate and fanning strip, can reach gapless very soon through break-in, thereby reach sealing effectiveness.When inclined type sealing plate and fanning strip disengagement, the balancing weight of lever long end is because naturally drooping from great, thereby the supporting member of lever short end is lifted naturally, the inclined type sealing plate is propped up returns to original state, when again contacting with fanning strip, the supporting member of lever short end is progressively pressed down, and so moves in circles, and realizes the radial seal of air preheater.Its advantage mainly is: be installed with abrasion-proof ceramic block on the lateral surface of (1) inclined type sealing plate, abrasion-proof ceramic block is contacted with fanning strip, have good sealing effect, anti-wear performance is good, the advantages such as long service life.Under the long-term hot situation of air preheater, operation causes the rotor thermal deformation, and the sealing device carries out auto-compensation by lever adjusting device to the distortion of rotor, reaches sealing effectiveness, can move for a long time.(2) this device can carry out modularization production, and perfect technology is on-the-spot easy for installation, short construction period.(3) this device can reduce the air leak rate of air curtain of air preheater, thereby improves boiler efficiency, reduces energy consumption.The rotary regenerative air preheater of suitable large-sized boiler is done radial seal and is used.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the left TV structure schematic diagram of Fig. 1.
The specific embodiment
The nonrestrictive concrete structure schematic diagram that discloses in embodiment of the present utility model of accompanying drawing is further described as follows by reference to the accompanying drawings:
Referring to attached Fig. 1 and 2,1 in figure is the inclined type sealing plate, the 2nd, and hinge, the 3rd, fixed head, the 4th, Step Shaft, the 5th, supporting member, the 6th, lever, the 7th, limited block, the 8th, nut, the 9th, balancing weight, the 10th, setscrew nut.
air preheater lever sealing device of the present utility model, its structure as depicted in figs. 1 and 2, mainly comprise inclined type sealing plate 1, fixed head 3, Step Shaft 4 and lever adjusting device, described inclined type sealing plate 1 be fixedly to be connected with fixed head 3 through hinge 2 by its medial surface, Step Shaft 4 and lever adjusting device are equipped with respectively in the two that it is characterized in that inclined type sealing plate 1, described Step Shaft 4 is fixedly connected with fixed head 3, lever adjusting device comprises lever 6, balancing weight 9, supporting member 5, limited block 7, nut 8 and setscrew nut 10, wherein lever 6 middle parts are arranged on Step Shaft 4, lever 6 one ends are connected with supporting member 5, lever 6 other ends are equipped with balancing weight 9 and setscrew nut 10, limited block 7 is installed on the Step Shaft 4 in lever 6 outsides by nut 8.
Balancing weight 9 on described lever 6 is arranged on lever by screw thread, and setscrew nut 10 is arranged on the lever 6 of balancing weight 9 one sides, makes the balancing weight location after adjustment.The position of adjusting balancing weight 6 on lever makes supporting member just right to the support force of inclined type sealing plate.In order to improve service life, can be installed with abrasion-proof ceramic block on the lateral surface of inclined type sealing plate.
Claims (3)
1. air preheater lever sealing device, comprise the inclined type sealing plate, fixed head, Step Shaft and lever adjusting device, described inclined type sealing plate be fixedly to be connected with fixed head through hinge by its medial surface, Step Shaft and lever adjusting device are equipped with respectively in the two that it is characterized in that the inclined type sealing plate, described Step Shaft is fixedly connected with fixed head, lever adjusting device comprises lever, balancing weight, supporting member, limited block, nut and setscrew nut, wherein the lever middle part is arranged on Step Shaft, lever one end is connected with supporting member, the lever other end is equipped with balancing weight and setscrew nut, limited block is contained on the Step Shaft in the lever outside by nut clip.
2. air preheater lever sealing device as claimed in claim 1, is characterized in that the balancing weight on described lever is arranged on lever by screw thread, and setscrew nut is arranged on the lever of balancing weight one side.
3. air preheater lever sealing device as claimed in claim 1 or 2 is characterized in that being installed with abrasion-proof ceramic block on the lateral surface of described inclined type sealing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207319476U CN203024178U (en) | 2012-12-27 | 2012-12-27 | Lever type sealing device of air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207319476U CN203024178U (en) | 2012-12-27 | 2012-12-27 | Lever type sealing device of air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203024178U true CN203024178U (en) | 2013-06-26 |
Family
ID=48648160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207319476U Expired - Lifetime CN203024178U (en) | 2012-12-27 | 2012-12-27 | Lever type sealing device of air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203024178U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900099A (en) * | 2014-04-10 | 2014-07-02 | 周惠 | Hinge type air preheating sealing device |
| CN104198121A (en) * | 2014-07-25 | 2014-12-10 | 柯马(上海)工程有限公司 | Mechanism for realizing X-Y-directional movement through unidirectional drive of narrow space |
| CN104727917A (en) * | 2015-03-04 | 2015-06-24 | 芜湖新联造船有限公司 | Engine exhaust pipe anti-rainwater device for ship |
| CN107388277A (en) * | 2017-05-31 | 2017-11-24 | 神华集团有限责任公司 | Air preheater sealing structure, rotary regenerative air heater and boiler |
-
2012
- 2012-12-27 CN CN2012207319476U patent/CN203024178U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900099A (en) * | 2014-04-10 | 2014-07-02 | 周惠 | Hinge type air preheating sealing device |
| CN104198121A (en) * | 2014-07-25 | 2014-12-10 | 柯马(上海)工程有限公司 | Mechanism for realizing X-Y-directional movement through unidirectional drive of narrow space |
| CN104198121B (en) * | 2014-07-25 | 2017-01-18 | 柯马(上海)工程有限公司 | Mechanism for realizing X-Y-directional movement through unidirectional drive of narrow space |
| CN104727917A (en) * | 2015-03-04 | 2015-06-24 | 芜湖新联造船有限公司 | Engine exhaust pipe anti-rainwater device for ship |
| CN107388277A (en) * | 2017-05-31 | 2017-11-24 | 神华集团有限责任公司 | Air preheater sealing structure, rotary regenerative air heater and boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |