CN110762551A - Air preheater invariant constant rate of leaking out sealing device that warp - Google Patents
Air preheater invariant constant rate of leaking out sealing device that warp Download PDFInfo
- Publication number
- CN110762551A CN110762551A CN201810824692.XA CN201810824692A CN110762551A CN 110762551 A CN110762551 A CN 110762551A CN 201810824692 A CN201810824692 A CN 201810824692A CN 110762551 A CN110762551 A CN 110762551A
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- China
- Prior art keywords
- plate
- fixedly connected
- sealing
- fixed
- fixed bin
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/02—Arrangements of regenerators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F11/00—Arrangements for sealing leaky tubes and conduits
- F28F11/02—Arrangements for sealing leaky tubes and conduits using obturating elements, e.g. washers, inserted and operated independently of each other
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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 invention discloses a non-deformation constant air leakage rate sealing device of an air preheater, which comprises a power shaft and a fixed bin grid, the outer side of the power shaft is fixedly connected with a fixed bin lattice through a connecting bolt, the tail end of the fixed bin lattice is fixedly connected with a sealing arc plate, the middle part of the inner cavity of the fixed bin lattice is fixedly welded with a radial partition plate, the upper end of the fixed bin lattice is fixedly connected with a sealing heightening plate, the bottom of the sealing heightening plate is fixedly connected with a fixed welding plate, the upper end of the fixed welding plate is fixedly connected with a hot end fan-shaped plate, the middle part of the sealing heightening plate is respectively and fixedly connected with a radial sealing plate and a hot end radial sealing plate, both sides of the radial sealing plate and the hot end radial sealing plate are respectively and fixedly connected with a sealing sheet pressing plate, the sealing arc plate is characterized in that the upper end of the sealing arc plate is fixedly connected with T-shaped steel, the upper end of the T-shaped steel is fixedly connected with a T-shaped steel heightening plate, and a rib plate is fixedly welded on the inner side of the T-shaped steel heightening plate.
Description
Technical Field
The invention relates to the field of air preheater sealing devices, in particular to a non-deformation constant air leakage rate sealing device for an air preheater.
Background
The rotary air preheater is called air preheater for short, it is a heat exchange equipment of large boiler, and is characterized by compact structure, small volume, high density of heat exchange surface, light whole machine weight, less metal consumption, convenient arrangement and installation and light low-temperature corrosion, etc. compared with tubular air preheater, it can be extensively used in power station boiler. The air preheater is a device which utilizes the heat of the flue gas exhausted by the boiler to preheat the air required by the boiler to participate in combustion, or is used as a recovery device of the heat of the flue gas of the boiler so as to use the heat as fuel for dehumidification, heating and other purposes, and the device is arranged to improve the efficiency of the boiler. In the prior art, the flue gas and the air in the air preheater generally adopt countercurrent, one end of the air preheater, which is provided with a flue gas inlet and an air outlet, is defined as a hot end, and the other end of the air preheater is a cold end. The air leakage of the air preheater is divided into direct air leakage and carrying air leakage, the air leakage ratio of the direct air leakage and the carrying air leakage is generally less than 1:3, the radial air leakage of the hot end of the air preheater in the direct air leakage accounts for more than 60% of the total direct air leakage, and the radial air leakage of the hot end of the air preheater with the larger diameter accounts for a larger proportion of the total direct air leakage. The direct air leakage source at the hot end is mushroom-shaped deformation formed by superposition of thermal deformation and gravity deformation of the air preheater rotor in the working process, so that the maintenance frequency of the conventional air preheater is high, and further improvement of the boiler efficiency and further reduction of the operation cost are restricted.
Disclosure of Invention
The invention aims to provide a sealing device with a constant air leakage rate and without deformation for an air preheater, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a constant air leakage rate sealing device without deformation for an air preheater comprises a power shaft and a fixed bin grid, wherein the outer side of the power shaft is fixedly connected with the fixed bin grid through a connecting bolt, the tail end of the fixed bin grid is fixedly connected with a sealing arc plate, the middle part of the inner cavity of the fixed bin grid is fixedly welded with a radial separating plate, the inner cavity of the fixed bin grid is movably inserted with a first movable connecting plate and a second movable connecting plate, the inner cavity of the fixed bin grid is movably inserted with a movable plate, the upper end of the fixed bin grid is fixedly connected with a sealing heightening plate, the bottom of the sealing heightening plate is fixedly connected with a fixed welding plate, the upper end of the fixed welding plate is fixedly connected with a hot end fan-shaped plate, the middle part of the sealing heightening plate is respectively and fixedly connected with a radial sealing plate and a hot end radial sealing plate, both sides of the radial sealing plate, the sealed arc board upper end fixedly connected with T shaped steel, the board is increased to T shaped steel upper end fixedly connected with T shaped steel, the inboard fixed welding of board is increased to T shaped steel has the floor, the inboard fixed connection that increases of floor increases the board fixed connection with sealed, storehouse check board lower extreme fixedly connected with cold junction sector plate.
Preferably, the upper end of the middle part of the fixed bin lattice is fixedly connected with a lower partition plate through a first bolt assembly, the upper end of the lower partition plate is fixedly connected with an upper partition plate in an inserted mode, and the upper end of the upper partition plate is fixedly connected with a sealing piece through a second bolt assembly.
Preferably, the fixed welding plate is positioned at one end of the seal heightening plate close to the power shaft.
Preferably, the lower partition plate is provided with two partition plates which are respectively positioned at two sides of the fixed bin grids, and sealing pieces are fixedly connected to two sides of the upper end of the upper partition plate.
Preferably, the hot end sector plate and the cold end sector plate are both non-deformable plates.
Compared with the prior art, the invention has the beneficial effects that: a constant air leakage rate sealing device without deformation of an air preheater achieves the effect of limiting the annular displacement of a movable plate by arranging an annular limiting device; by arranging the radial sealing plate and the hot-end radial sealing plate, the hot-end sealing plate can still maintain a position close to a cold state in a hot state, and the gap between the sector plate and the sealing plate is reduced, so that the effect of reducing air leakage is achieved; through the structure that sets up two gasket, reached the effect that further improves sealed efficiency.
Drawings
FIG. 1 is a partial top view of an air preheater non-deformable constant air leakage rate sealing device according to the present invention;
FIG. 2 is a partial cross-sectional side view of an air preheater non-deformable constant air leakage rate sealing device according to the present invention;
FIG. 3 is a partial longitudinal sectional view of a sealing device grid plate of an air preheater non-deforming constant air leakage rate sealing device according to the present invention;
in the figure: the sealing device comprises a power shaft 1, connecting bolts 11, fixed bin lattices 2, a sealing arc plate 21, a lower partition plate 22, a radial partition plate 3, a first movable connecting plate 31, a second movable connecting plate 4, a sealing heightening plate 5, a fixed welding plate 51, a movable plate 52, a radial sealing plate 53, a circumferential limiting device 54, a hot end radial sealing plate 55, a sealing plate pressing plate 56, a rib plate 57, a hot end sector plate 6, a cold end sector plate 61, a T-shaped steel 7, a T-shaped steel heightening plate 71, a first bolt assembly 8, a second bolt assembly 81, an upper partition plate 9 and a sealing plate 91.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1, fig. 2 and fig. 3, the present invention provides a technical solution: a non-deformation constant air leakage rate sealing device of an air preheater comprises a power shaft 1 and a fixed bin grid 2, wherein the outer side of the power shaft 1 is fixedly connected with the fixed bin grid 2 through a connecting bolt 11, the tail end of the fixed bin grid 2 is fixedly connected with a sealing arc plate 21, the middle part of the inner cavity of the fixed bin grid 2 is fixedly welded with a radial partition plate 3, the inner cavity of the fixed bin grid 2 is movably inserted with a first movable connecting plate 31 and a second movable connecting plate 4, the inner cavity of the fixed bin grid 2 is movably inserted with a movable plate 52, the movable plate 52 is arranged at equal intervals with the first movable connecting plate 31 and the second movable connecting plate 4, the upper end of the fixed bin grid 2 is fixedly connected with a sealing heightening plate 5, the bottom of the sealing heightening plate 5 is fixedly connected with a fixed welding plate 51, the fixed welding plate 51 is positioned at one end of the sealing heightening plate 5 close to the power shaft 1, the upper end of, the middle part of the sealing heightening plate 5 is fixedly connected with a radial sealing plate 53 and a hot end radial sealing plate 55 respectively, two sides of the radial sealing plate 53 and the hot end radial sealing plate 55 are fixedly connected with sealing plate pressing plates 56 respectively, the structure achieves the position that the hot end radial sealing plate 55 can still be kept close to a cold state in a hot state, the gap between a sector plate and a sealing plate is reduced, and therefore the effect of reducing air leakage is achieved, the middle part of the lower end of the sealing heightening plate 5 is fixedly connected with a circumferential limiting device 54, the structure achieves the effect of limiting the circumferential displacement of the movable plate 52, the upper end of the sealing arc plate 21 is fixedly connected with T-shaped steel 7, the upper end of the T-shaped steel 7 is fixedly connected with a T-shaped steel heightening plate 71, a rib plate 57 is fixedly welded on the inner side of the T-shaped steel heightening plate 71, the inner end of the rib, hot junction sector plate 6 and cold junction sector plate 61 are the invariant board, baffle 22 under fixed storehouse check 2 middle part upper ends through 8 fixedly connected with of first bolt assembly, baffle 9 is gone up to fixed the pegging graft in lower baffle 22 upper end, go up baffle 9 upper end through second bolt assembly 81 fixedly connected with gasket 91, above-mentioned structure has reached the effect that further improves sealed efficiency.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a invariable air leakage rate sealing device of air preheater indeformable, includes power shaft (1) and fixed storehouse check (2), its characterized in that: the outer side of the power shaft (1) is fixedly connected with a fixed bin lattice (2) through a connecting bolt (11), the tail end of the fixed bin lattice (2) is fixedly connected with a sealing arc plate (21), the middle part of the inner cavity of the fixed bin lattice (2) is fixedly welded with a radial separating plate (3), the inner cavity of the fixed bin lattice (2) is movably inserted with a first movable connecting plate (31) and a second movable connecting plate (4), the inner cavity of the fixed bin lattice (2) is movably inserted with a movable plate (52), the upper end of the fixed bin lattice (2) is fixedly connected with a sealing heightening plate (5), the bottom of the sealing heightening plate (5) is fixedly connected with a fixed welding plate (51), the upper end of the fixed welding plate (51) is fixedly connected with a hot end fan-shaped plate (6), and the middle part of the sealing heightening plate (5) is respectively fixedly connected, radial seal plate (53) and hot junction radial seal plate (55) both sides equal fixedly connected with gasket clamp plate (56), sealed board (5) lower extreme middle part fixedly connected with hoop stop device (54) of increasing, sealed arc plate (21) upper end fixedly connected with T shaped steel (7), board (71) is increased to T shaped steel (7) upper end fixedly connected with T shaped steel, board (71) inboard fixed welding is increased to T shaped steel has floor (57), floor (57) inner and sealed board (5) fixed connection of increasing, storehouse check board (2) lower extreme fixedly connected with cold junction sector plate (61).
2. The air preheater non-deforming constant air leakage rate sealing device according to claim 1, wherein: fixed storehouse check (2) middle part upper end is through baffle (22) under first bolt assembly (8) fixedly connected with, baffle (22) upper end is fixed pegged graft down has last baffle (9), go up baffle (9) upper end through second bolt assembly (81) fixedly connected with gasket (91).
3. The air preheater non-deforming constant air leakage rate sealing device according to claim 1, wherein: the fixed welding plate (51) is positioned at one end of the sealing heightening plate (5) close to the power shaft (1).
4. The air preheater non-deforming constant air leakage rate sealing device according to claim 2, wherein: lower baffle (22) are equipped with two, are located the both sides of fixed storehouse check (2) respectively, it all fixedly to link there is gasket (91) to go up baffle (9) upper end both sides.
5. The air preheater non-deforming constant air leakage rate sealing device according to claim 1, wherein: the hot end sector plate (6) and the cold end sector plate (61) are both non-deformable plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824692.XA CN110762551A (en) | 2018-07-25 | 2018-07-25 | Air preheater invariant constant rate of leaking out sealing device that warp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824692.XA CN110762551A (en) | 2018-07-25 | 2018-07-25 | Air preheater invariant constant rate of leaking out sealing device that warp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110762551A true CN110762551A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810824692.XA Pending CN110762551A (en) | 2018-07-25 | 2018-07-25 | Air preheater invariant constant rate of leaking out sealing device that warp |
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| CN (1) | CN110762551A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029303A1 (en) * | 2021-08-30 | 2023-03-09 | 浙江兴核智拓科技有限公司 | Anti-blocking system and anti-blocking method based on split ring round-robin heating for rotary heat exchanger |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020112842A1 (en) * | 2001-02-21 | 2002-08-22 | Alstom Power N.V. | Low-distortion axial seal plate for air preheaters |
| CN201514151U (en) * | 2009-09-28 | 2010-06-23 | 哈尔滨润河科技有限公司 | Rotary air preheater sealing device |
| CN201935211U (en) * | 2010-12-01 | 2011-08-17 | 哈尔滨锅炉厂预热器有限责任公司 | Pre-heater |
| CN203823797U (en) * | 2014-01-08 | 2014-09-10 | 彭玉林 | Rotary type air preheater for preventing mushroom-shaped deformation of rotor |
| CN205481102U (en) * | 2016-04-11 | 2016-08-17 | 华大鼎诚（北京）电力技术有限公司 | Air heater and sealing device thereof |
| CN205825098U (en) * | 2016-05-23 | 2016-12-21 | 湖北金奥特节能环保科技有限公司 | Rotary regenerative air heater self adaptation leakage control device |
| CN107894007A (en) * | 2017-11-08 | 2018-04-10 | 上海锅炉厂有限公司 | A kind of floating regenerative air heater hot junction radial sealing system |
-
2018
- 2018-07-25 CN CN201810824692.XA patent/CN110762551A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020112842A1 (en) * | 2001-02-21 | 2002-08-22 | Alstom Power N.V. | Low-distortion axial seal plate for air preheaters |
| CN201514151U (en) * | 2009-09-28 | 2010-06-23 | 哈尔滨润河科技有限公司 | Rotary air preheater sealing device |
| CN201935211U (en) * | 2010-12-01 | 2011-08-17 | 哈尔滨锅炉厂预热器有限责任公司 | Pre-heater |
| CN203823797U (en) * | 2014-01-08 | 2014-09-10 | 彭玉林 | Rotary type air preheater for preventing mushroom-shaped deformation of rotor |
| CN205481102U (en) * | 2016-04-11 | 2016-08-17 | 华大鼎诚（北京）电力技术有限公司 | Air heater and sealing device thereof |
| CN205825098U (en) * | 2016-05-23 | 2016-12-21 | 湖北金奥特节能环保科技有限公司 | Rotary regenerative air heater self adaptation leakage control device |
| CN107894007A (en) * | 2017-11-08 | 2018-04-10 | 上海锅炉厂有限公司 | A kind of floating regenerative air heater hot junction radial sealing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029303A1 (en) * | 2021-08-30 | 2023-03-09 | 浙江兴核智拓科技有限公司 | Anti-blocking system and anti-blocking method based on split ring round-robin heating for rotary heat exchanger |
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Application publication date: 20200207 |
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