CN213300143U - Sealing structure of stepped cantilever type air preheater - Google Patents
Sealing structure of stepped cantilever type air preheater Download PDFInfo
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- CN213300143U CN213300143U CN202022038578.XU CN202022038578U CN213300143U CN 213300143 U CN213300143 U CN 213300143U CN 202022038578 U CN202022038578 U CN 202022038578U CN 213300143 U CN213300143 U CN 213300143U
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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 sealing structure of a ladder-shaped cantilever type air preheater, which comprises a first hot cold end fixing point, a second hot cold end fixing point, a first cold and hot end ladder-shaped cantilever type sealing plate, a second cold and hot end ladder-shaped cantilever type sealing plate, a hollow cylinder, a cold and hot end ladder-shaped cantilever type sealing plate sealing sheet and a cold and hot end radial sealing sheet, a rotor is arranged at one side of the hollow cylinder, a bin partition plate is arranged above and below one end of the rotor, the first cold-hot end step-shaped cantilever type sealing plate and the second cold-hot end step-shaped cantilever type sealing plate are fixedly connected with the bin partition plate and are mutually kept parallel, the radial sealing pieces at the cold and hot ends are respectively arranged on the first step-shaped cantilever type sealing plate at the cold and hot ends and the second step-shaped cantilever type sealing plate at the cold and hot ends, the upper end of the first cold-hot end stepped cantilever type sealing plate is provided with a hot end fan-shaped plate, and the lower end of the second cold-hot end stepped cantilever type sealing plate is provided with a cold end fan-shaped plate. The utility model discloses in, can effectively use.
Description
Technical Field
The utility model relates to an air preheater field especially relates to a echelonment cantilever type air preheater seal structure.
Background
The air preheater is a device for heating air required by fuel combustion by utilizing the heat of the smoke at the tail of the boiler, can further reduce the smoke exhaust temperature, improve the boiler efficiency, improve the ignition and combustion conditions of the fuel, reduce the incomplete combustion heat loss, improve the temperature of a hearth, strengthen the radiation heat exchange in the boiler, and reduce the number of heating surfaces of a water cooling wall in the boiler under a certain evaporation amount, thereby saving metal materials, reducing the manufacturing cost of the boiler, improving the boiler efficiency, improving the working conditions of a boiler fan, and simultaneously reducing the power consumption of the boiler fan.
At present, the air leakage rate of an air preheater and the heat exchange efficiency of the air preheater are controlled to be one of main energy-saving indexes of each air preheater using unit. Various air preheater sealing manufacturers continuously try various sealing technologies, and have more or less problems, such as complex structure, short service life, unreliable performance and the like, but the most basic problems are not overcome, namely the air preheater sealing manufacturers passively adapt to the mushroom deformation of the air preheater rotor and cannot actively control the mushroom deformation of the air preheater rotor, so that the long-term stable low air leakage rate of the air preheater cannot be truly achieved.
Disclosure of Invention
The utility model aims at solving the defects existing in the prior art and providing a sealing structure of a ladder-shaped cantilever type air preheater.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a sealing structure of a stepped cantilever type air preheater comprises a first hot cold end fixing point, a second hot cold end fixing point, a first cold and hot end stepped cantilever type sealing plate, a second cold and hot end stepped cantilever type sealing plate, a hollow cylinder, a cold and hot end stepped cantilever type sealing plate sealing piece and a cold and hot end radial sealing piece, a rotor is arranged at one side of the hollow cylinder, a bin partition plate is arranged above and below one end of the rotor, the first cold-hot end step-shaped cantilever type sealing plate and the second cold-hot end step-shaped cantilever type sealing plate are fixedly connected with the bin partition plate and are mutually kept parallel, the radial sealing pieces at the cold and hot ends are respectively arranged on the first step-shaped cantilever type sealing plate at the cold and hot ends and the second step-shaped cantilever type sealing plate at the cold and hot ends, the upper end of the first cold-hot end stepped cantilever type sealing plate is provided with a hot end fan-shaped plate, and the lower end of the second cold-hot end stepped cantilever type sealing plate is provided with a cold end fan-shaped plate.
As a further description of the above technical solution: the first cold-hot end stepped cantilever type sealing plate and the second cold-hot end stepped cantilever type sealing plate can select a reasonable stepped structure and a reasonable stepped structure proportion through calculation and check according to the structural size and the operation parameters of different air pre-heaters.
As a further description of the above technical solution: the cold and hot end radial sealing pieces can be applied to the hot end and the cold end independently and applied to the two ends jointly according to actual conditions.
As a further description of the above technical solution: the first cold-hot end step-shaped cantilever type sealing plate and the second cold-hot end step-shaped cantilever type sealing plate are uniformly distributed outside the heat storage element area.
As a further description of the above technical solution: and axial sealing plates are oppositely arranged on one sides of the first cold-hot end stepped cantilever type sealing plate and the second cold-hot end stepped cantilever type sealing plate.
As a further description of the above technical solution: and the cold and hot end ladder-shaped cantilever type sealing plate sealing sheet is arranged on the bin partition plate.
The utility model discloses following beneficial effect has:
1. the utility model discloses, system simple structure, echelonment cantilever type closing plate cold and hot attitude flexible deformation is controllable, but radial gasket and sector plate sealing gap initiative control under the various operating modes, and equipment long-term operation is reliable, and different load section air leakage rate performances are unchangeable basically.
2. The utility model discloses, the cost recovery period is short, can bring considerable economic benefits in short-term, long-term operation back only change the gasket can, easy operation.
Drawings
Fig. 1 is a schematic structural view of a sealing structure of a step-shaped cantilever air preheater provided by the present invention;
fig. 2 is a top view of the sealing structure of the step-shaped cantilever air preheater provided by the present invention.
Illustration of the drawings:
1. a first hot cold end fix point; 2. the first cold and hot end is a step-shaped cantilever type sealing plate; 3. the cold and hot ends are provided with ladder-shaped cantilever type sealing plate sealing sheets; 4. a hot end sector plate; 5. an axial seal plate; 6. a cold end sector plate; 7. the second cold and hot end is a step-shaped cantilever type sealing plate; 8. a second hot cold end fixed point; 9. a bin partition; 10. a hollow cylinder; 11. a rotor; 12. the cold end and the hot end are radial sealing pieces.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-2, the present invention provides an embodiment: a sealing structure of a step-shaped cantilever type air preheater comprises a first hot and cold end fixing point 1, a second hot and cold end fixing point 8, a first cold and hot end step-shaped cantilever type sealing plate 2, a second cold and hot end step-shaped cantilever type sealing plate 7, the sealing structure comprises a hollow cylinder 10, a cold-hot end ladder-shaped cantilever type sealing plate 3, a cold-hot end radial sealing plate 12, a rotor 11 is arranged on one side of the hollow cylinder 10, a bin partition plate 9 is arranged above and below one end of the rotor 11, a first cold-hot end ladder-shaped cantilever type sealing plate 2 and a second cold-hot end ladder-shaped cantilever type sealing plate 7 are fixedly connected with the bin partition plate 9 and are parallel to each other, the cold-hot end radial sealing plate 12 is respectively installed on the first cold-hot end ladder-shaped cantilever type sealing plate 2 and the second cold-hot end ladder-shaped cantilever type sealing plate 7, a hot end fan-shaped plate 4 is arranged at the upper end of the first cold-hot end ladder-shaped cantilever type sealing plate 2, and a.
The first cold-hot end stepped cantilever type sealing plate 2 and the second cold-hot end stepped cantilever type sealing plate 7 can be used for independent hot end and cold end application and two-end combined application according to actual conditions by calculation and check according to the structural size and the operation parameters of different air pre-heaters and by selecting a reasonable stepped structure and proportion thereof, the first cold-hot end stepped cantilever type sealing plate 2 and the second cold-hot end stepped cantilever type sealing plate 7 are uniformly distributed outside a heat storage element area, one side of the first cold-hot end stepped cantilever type sealing plate 2 and one side of the second cold-hot end stepped cantilever type sealing plate 7 are oppositely provided with an axial sealing plate 5, and the cold-hot end stepped cantilever type sealing plate 3 is arranged on a bin partition plate 9.
The working principle is as follows: the sealing structure of the ladder-shaped cantilever type air preheater of the utility model has the advantages that the first cold-hot end ladder-shaped cantilever type sealing plate 2 and the second cold-hot end ladder-shaped cantilever type sealing plate 7 can reduce the dead weight of the ladder-shaped cantilever type sealing plate and control the cold-hot state flexible deformation amount of the ladder-shaped cantilever type sealing plate according to the structural size and the operation parameters of different air preheaters through calculation and check and selecting reasonable ladder-shaped structures and proportion thereof, thereby ensuring that the sealing clearance of the radial sealing sheet and the sector plate under different working conditions is in a reasonable range, the cold-hot end radial sealing sheet 12 can be applied independently at the hot end and the cold end and the two ends are jointly applied according to the actual conditions, the first cold-hot end ladder-shaped cantilever type sealing plate 2 and the second cold-hot end ladder-shaped cantilever type sealing plate 7 are uniformly distributed outside, therefore, the sealing device does not generate bending deformation during operation, and can ensure that the sealing clearance is within a set range no matter in a low-load or high-load state, thereby ensuring the low air leakage rate of a full-load section.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. The utility model provides a echelonment cantilever type air preheater seal structure, includes first hot cold junction fixed point (1), the hot cold junction fixed point of second (8), first cold and hot end echelonment cantilever type closing plate (2), the cold and hot end echelonment cantilever type closing plate of second (7), a cavity section of thick bamboo (10), cold and hot end echelonment cantilever type closing plate gasket (3), cold and hot end radial gasket (12), its characterized in that: the improved structure of the sealing structure is characterized in that a rotor (11) is arranged on one side of the hollow cylinder (10), a bin partition plate (9) is arranged above and below one end of the rotor (11), the first cold-hot end stepped cantilever type sealing plate (2) and the second cold-hot end stepped cantilever type sealing plate (7) are fixedly connected with the bin partition plate (9) and are parallel to each other, the cold-hot end radial sealing pieces (12) are respectively installed on the first cold-hot end stepped cantilever type sealing plate (2) and the second cold-hot end stepped cantilever type sealing plate (7), a hot end sector plate (4) is arranged at the upper end of the first cold-hot end stepped cantilever type sealing plate (2), and a cold end sector plate (6) is arranged at the lower end of the second cold-hot end stepped cantilever.
2. The stepped, cantilevered air preheater sealing structure of claim 1, wherein: the first cold-hot end step-shaped cantilever type sealing plate (2) and the second cold-hot end step-shaped cantilever type sealing plate (7) can select a reasonable step-shaped structure and a reasonable step-shaped structure proportion through calculation and check according to the structural size and the operation parameters of different air pre-heaters.
3. The stepped, cantilevered air preheater sealing structure of claim 1, wherein: the cold and hot end radial sealing pieces (12) can be independently applied to the hot end and the cold end according to actual conditions and can be jointly applied to the two ends.
4. The stepped, cantilevered air preheater sealing structure of claim 1, wherein: the first cold-hot end step-shaped cantilever type sealing plate (2) and the second cold-hot end step-shaped cantilever type sealing plate (7) are uniformly distributed outside the heat storage element area.
5. The stepped, cantilevered air preheater sealing structure of claim 1, wherein: one side of the first cold and hot end stepped cantilever type sealing plate (2) and one side of the second cold and hot end stepped cantilever type sealing plate (7) are oppositely provided with an axial sealing plate (5).
6. The stepped, cantilevered air preheater sealing structure of claim 1, wherein: and the cold and hot end ladder-shaped cantilever type sealing plate sealing sheet (3) is arranged on the bin partition plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022038578.XU CN213300143U (en) | 2020-09-17 | 2020-09-17 | Sealing structure of stepped cantilever type air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022038578.XU CN213300143U (en) | 2020-09-17 | 2020-09-17 | Sealing structure of stepped cantilever type air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213300143U true CN213300143U (en) | 2021-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202022038578.XU Active CN213300143U (en) | 2020-09-17 | 2020-09-17 | Sealing structure of stepped cantilever type air preheater |
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| CN (1) | CN213300143U (en) |
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2020
- 2020-09-17 CN CN202022038578.XU patent/CN213300143U/en active Active
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