CN218270357U

CN218270357U - Hot end non-deformation sealing structure for rotary air preheater

Info

Publication number: CN218270357U
Application number: CN202221978901.4U
Authority: CN
Inventors: 刘野; 朱金伟; 朱金龙; 刘闯; 赵有义
Original assignee: Jinaote Liaoning Energy Saving And Environmental Protection Technology Co ltd
Current assignee: Jinaote Liaoning Energy Saving And Environmental Protection Technology Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2023-01-10
Anticipated expiration: 2032-07-28

Abstract

The application discloses a hot junction seal structure that does not warp for rotation air preheater, including the major structure, the major structure includes the hot junction sector plate, hot junction sector plate department installs hot junction non-deformable plate, hot junction non-deformable sealing plate and hot junction non-deformable dead point board, the hot junction non-deformable plate is fixed in the rotor through hot junction non-deformable sealing plate and hot junction non-deformable dead point board and leans on central cylinder side, hot junction sector plate and rotor and storehouse board pass through the spacing couple board of hot junction static seal riser, hot junction non-deformable plate and the radial gasket connection of hot junction, rotor and storehouse board downside are provided with the cold junction sector plate. The long-term operation of this application equipment is reliable, and different load section air leakage rate performance is unchangeable basically, and the cost recovery period is short, can bring considerable economic effect in the short-term, long-term operation back only change the gasket can, can be initiative go control air preheater rotor mushroom to warp, reduce the air leakage rate of air preheater.

Description

Hot end non-deformation sealing structure for rotary air preheater

Technical Field

The application relates to the field of air preheaters, in particular to a hot end non-deforming sealing structure for a rotary air preheater.

Background

The air preheater is a heating surface for preheating air before entering a boiler to a certain temperature by smoke in a flue at the tail part of the boiler through internal radiating fins, is equipment for improving the heat exchange performance of the boiler and reducing energy consumption, and is generally divided into three types, namely a plate type, a rotary type and a tubular type.

In a hot-state operation state of the rotary air preheater, all parts of the air preheater expand due to heating, due to the fact that temperature differences exist at different parts of the air preheater, a rotor deforms like a mushroom, gaps among the rotor, a sector plate, an axial sealing plate and the like also change, if the gaps are too large, air leakage rate of the air preheater is large, if the gaps are too small, the air preheater is possibly blocked, the existing air preheater sealing structure can only passively adapt to mushroom deformation of the rotor of the air preheater, and can not actively control mushroom deformation of the rotor of the air preheater, so that long-term stable low air leakage rate of the air preheater cannot be really achieved. Therefore, the hot end non-deforming sealing structure for the rotary air preheater is provided for solving the problems.

Disclosure of Invention

The embodiment provides a hot end non-deforming sealing structure for a rotary air preheater, which is used for solving the problem that the sealing structure of the air preheater in the prior art can only passively adapt to the deformation of the air preheater rotor mushroom and can not actively control the deformation of the air preheater rotor mushroom.

According to an aspect of the application, a hot end non-deforming sealing structure for a rotary air preheater is provided, and comprises a main body structure, wherein the main body structure comprises a hot end sector plate, a hot end non-deforming sealing plate and a hot end non-deforming dead point plate are arranged at the position of the hot end sector plate, the hot end non-deforming plate is fixed on the side, close to a central cylinder, of a rotor through the hot end non-deforming sealing plate and the hot end non-deforming dead point plate, the hot end sector plate, the rotor and a bin plate of the rotor are connected in a radial mode through a hot end static sealing vertical plate, a hot end non-deforming plate limiting hook plate and a hot end sealing piece, and a cold end sector plate is arranged on the lower side of the rotor and the bin plate of the rotor.

Further, including auxiliary structure, auxiliary structure is including moving the gasket, the hot junction does not deform the closing plate with move gasket sliding connection, move the gasket inboard and install fixed backing plate, hot junction does not deform closing plate one side and is provided with the radial baffle of rotor, the hot junction does not deform closing plate, fixed backing plate, the radial baffle of rotor and first connecting plate pass through fixing bolt and connect, rotor radial baffle one end is connected with the cold junction sector plate, first connecting plate top rigid coupling has the compensator, compensator top rigid coupling has the second connecting plate, second connecting plate rigid coupling is in moving gasket one side.

Furthermore, the height of the hot end non-deformable plate is greater than that of the original radial partition plate of the air preheater, and the hot end non-deformable plate is parallel to the bin partition plate.

Furthermore, the hot end non-deformable plate only controls the cold and hot state operation deformation amount through the position fixation of the original radial partition plate, and the hot end non-deformable plate at the position of the hot end rotor angle steel is in a completely suspended state.

Further, the hot end non-deformable plate and the hot end radial sealing sheet are connected together through a connecting bolt.

Furthermore, the hot end non-deforming plate and the hot end static sealing vertical plate have height overlapping difference and are larger than the external deformation of the air preheater rotor.

Through the above embodiment of the application, the problem that the sealing structure of the air preheater can only passively adapt to the deformation of the air preheater rotor mushroom and can not actively control the deformation of the air preheater rotor mushroom is solved, the deformation of the air preheater rotor mushroom can be actively controlled, the air leakage rate of the air preheater is reduced, the equipment runs reliably for a long time, and the air leakage rate performance of different load sections is basically unchanged.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is an overall internal schematic view of one embodiment of the present application;

FIG. 2 is a schematic overall side view of one embodiment of the present application;

fig. 3 is a partially enlarged schematic view of a portion a in fig. 2 according to an embodiment of the present application.

In the figure: 1. a hot end sector plate; 2. the hot end does not deform the board; 3. the hot end does not deform the sealing plate; 4. the hot end does not deform the dead plate; 5. a hot end static sealing vertical plate; 6. the hot end does not deform the spacing hook plate of the shape plate; 7. a hot end radial sealing sheet; 8. a rotor and a bin plate thereof; 9. a cold end sector plate; 10. a movable sealing sheet; 11. fixing a base plate; 12. a rotor radial diaphragm; 13. fixing the bolt; 14. a first connecting plate; 15. a compensator; 16. a second connecting plate.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1-3, a hot end non-deforming sealing structure for a rotary air preheater comprises a main structure, wherein the main structure comprises a hot end sector plate 1, a hot end non-deforming plate 2, a hot end non-deforming sealing plate 3 and a hot end non-deforming dead point plate 4 are mounted at the position of the hot end sector plate 1, the hot end non-deforming plate 2 is fixed on the side, close to a central cylinder, of a rotor through the hot end non-deforming sealing plate 3 and the hot end non-deforming dead point plate 4, the hot end sector plate 1, the rotor and a bin plate 8 of the rotor are connected through a hot end static sealing vertical plate 5, a hot end non-deforming plate limiting hook plate 6 and a hot end radial sealing piece 7, and a cold end sector plate 9 is arranged on the lower side of the rotor and the bin plate 8 of the rotor.

The hot end non-deformation sealing plate structure comprises an auxiliary structure, wherein the auxiliary structure comprises a movable sealing plate 10, a hot end non-deformation sealing plate 3 is in sliding connection with the movable sealing plate 10, a fixed base plate 11 is installed on the inner side of the movable sealing plate 10, a rotor radial partition plate 12 is arranged on one side of the hot end non-deformation sealing plate 3, the fixed base plate 11, the rotor radial partition plate 12 and a first connecting plate 14 are connected through a fixing bolt 13, one end of the rotor radial partition plate 12 is connected with a cold end sector plate 9, a compensator 15 is fixedly connected to the top of the first connecting plate 14, a second connecting plate 16 is fixedly connected to the top of the compensator 15, and the second connecting plate 16 is fixedly connected to one side of the movable sealing plate 10; the hot end non-deformable plate 2 is higher than the original radial partition plate of the air preheater, so that the air leakage of a triangular area outside the air preheater is solved, and the hot end non-deformable plate 2 is parallel to the bin partition plate; the hot end non-deformable plate 2 only controls the cold and hot state operation deformation amount through the position fixation of the original radial partition plate, and the hot end non-deformable plate 2 at the position of the hot end rotor angle steel is in a completely suspended state; the hot end non-deformable plate 2 and the hot end radial sealing sheet 7 are connected together through a connecting bolt; the hot end non-deforming plate 2 and the hot end static sealing vertical plate 5 have height overlapping difference and are larger than the external deformation of the air preheater rotor, and the height difference and the length difference of the hot end non-deforming plate and the hot end static sealing vertical plate are determined by calculation and check according to different types, operation parameters and radial sealing gap expected values.

When the air preheater is used, the height of the hot end non-deformable plate 2 is greater than that of an original radial partition plate of the air preheater, so that the air leakage in a triangular area outside the air preheater is solved, the hot end non-deformable plate 2 and the hot end static sealing vertical plate 5 have height overlapping difference and are greater than the external deformation of a rotor of the air preheater, the height difference and the length difference of the hot end non-deformable plate 2 and the hot end static sealing vertical plate 5 need to be determined by calculation and check according to different types, operation parameters and radial sealing gap expected values, the connection mode of the hot end non-deformable plate 2 and the original radial partition plate is determined, an adjustable cantilever beam structure is formed by adjusting the height position of the hot end non-deformable plate 2 so as to adapt to the sealing requirements of the air preheater with different types and operation parameters, the sealing gaps of the radial sealing strip and the sector plate under different working conditions are controlled within a reasonably controllable range, and the connection fixing mode of the hot end non-deformable plate 2, the hot end non-deformable sealing plate 3, the hot end non-deformable dead plate 4, the hot end static sealing vertical plate 5 and the hot end non-deformable plate limiting hook plate 6 is controlled, the semi-welding type, the triangular plate type, the flat plate type and the like can be flexibly selected to be fixed according to the site construction conditions of the air pre-heaters with different types and operation parameters to form a required cantilever structure, the hot end non-deformable plate 2 and the hot end non-deformable plate limiting hook plate 6 can be selected to adjust the consistent connection mode of the two plates according to the site construction conditions to simplify the connection mode, the hot end non-deformable plate and the hot end non-deformable plate can be selectively increased or cancelled according to the site construction conditions of the air pre-heaters with different types and operation parameters, a compensator 15 adopts a high-temperature-resistant anti-oxidation material, closed gas is used as a working medium, the temperature is sensitive, the gas volume change and the temperature are in a nearly linear relation, the mushroom deformation of a rotor of the air pre-heaters can be actively controlled, the air leakage rate of the air pre-heaters is reduced, and the equipment can operate reliably for a long time, the air leakage rate performance of different load sections is basically unchanged.

The application has the advantages that:

this application easy operation, the gasket does not rub with the sector plate under the various operating modes, and equipment long-term operation is reliable, and different load section air leakage rate performance is unchangeable basically, and the cost recovery period is short, can bring considerable economic effect in the short-term, long-term operation back only change the gasket can, the going of can initiative control air preheater rotor mushroom warp, reduce the air leakage rate of air preheater.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a hot junction seal structure that does not warp for rotation air preheater which characterized in that: the hot end fan-shaped plate structure comprises a main structure, wherein the main structure comprises a hot end fan-shaped plate (1), a hot end non-deformation plate (2), a hot end non-deformation sealing plate (3) and a hot end non-deformation dead point plate (4) are arranged at the position of the hot end fan-shaped plate (1), the hot end non-deformation plate (2) is fixed on the side, close to a central cylinder, of a rotor through the hot end non-deformation sealing plate (3) and the hot end non-deformation dead point plate (4), the hot end fan-shaped plate (1), the rotor and a bin plate (8) of the rotor are connected through a hot end static sealing vertical plate (5), a hot end non-deformation plate limiting hook plate (6) and a hot end radial sealing sheet (7), and a cold end fan-shaped plate (9) is arranged on the lower side of the rotor and the bin plate (8).

2. The hot end non-deforming sealing structure for the rotary air preheater as claimed in claim 1, wherein: including auxiliary structure, auxiliary structure is including moving gasket (10), hot junction undeforming closing plate (3) and moving gasket (10) sliding connection, move gasket (10) inboard and install fixed backing plate (11), hot junction undeforming closing plate (3) one side is provided with rotor radial baffle (12), hot junction undeforming closing plate (3), fixed backing plate (11), rotor radial baffle (12) and first connecting plate (14) are connected through fixing bolt (13), rotor radial baffle (12) one end is connected with cold junction sector plate (9), first connecting plate (14) top rigid coupling has compensator (15), compensator (15) top rigid coupling has second connecting plate (16), second connecting plate (16) rigid coupling is in moving gasket (10) one side.

3. The hot end non-deforming sealing structure for the rotary air preheater as claimed in claim 1, wherein: the hot end non-deformable plate (2) is higher than the original radial partition plate of the air preheater, and the hot end non-deformable plate (2) is parallel to the bin partition plate.

4. The hot end non-deforming sealing structure for the rotary air preheater as claimed in claim 1, wherein: the hot end non-deformable plate (2) only controls the cold and hot state operation deformation amount through the position fixation of the original radial partition plate, and the hot end non-deformable plate (2) at the position of the hot end rotor angle steel is in a completely suspended state.

5. The hot end non-deforming sealing structure for the rotary air preheater as recited in claim 1, wherein: the hot end non-deformable plate (2) and the hot end radial sealing sheet (7) are connected together through a connecting bolt.

6. The hot end non-deforming sealing structure for the rotary air preheater as claimed in claim 1, wherein: the hot end non-deforming plate (2) and the hot end static sealing vertical plate (5) have height overlapping difference and are larger than the external deformation of the air preheater rotor.