CN219674284U - Air preheater sealing structure - Google Patents
Air preheater sealing structure Download PDFInfo
- Publication number
- CN219674284U CN219674284U CN202222969070.0U CN202222969070U CN219674284U CN 219674284 U CN219674284 U CN 219674284U CN 202222969070 U CN202222969070 U CN 202222969070U CN 219674284 U CN219674284 U CN 219674284U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- cast iron
- iron plate
- plate heat
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 89
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 65
- 238000003466 welding Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a sealing structure of an air preheater, which belongs to the technical field of air preheater sealing, and particularly relates to the sealing structure of the air preheater, comprising a first cast iron plate heat exchanger, a second cast iron plate heat exchanger, a sealing piece with a T-shaped section and a pressing plate, wherein the pressing plate is connected with the first cast iron plate heat exchanger and the second cast iron plate heat exchanger in a clamping way through a pressing plate fastening device, and the pressing plate fastening device applies pressure to the T-shaped sealing piece to enable the T-shaped sealing piece to be tightly attached to the first cast iron plate heat exchanger and the second cast iron plate heat exchanger, and the sealing structure has the following beneficial effects that: the pressing plate fastening device is arranged to drive the pressing plate to press the T-shaped sealing element, so that sealing is realized, welding is not needed, and the problem that the sealing effect is poor due to welding is solved; the clamp plate fastener is the joint with the connection mode of first cast iron plate heat exchanger, second cast iron plate heat exchanger, and the quick installation of being convenient for later stage is convenient for to the change of "T" sealing member.
Description
Technical Field
The utility model relates to the technical field of air preheater sealing, in particular to an air preheater sealing structure.
Background
The working principle of the air preheater is that hot flue gas and cold air are subjected to heat exchange, the temperature of the hot flue gas is reduced, heat is recovered, and emission is achieved. The temperature of the cold air is increased to obtain heat, and the heat is used as combustion supporting and fuel is saved, so that the heat exchange channel is required to have good heat exchange effect. In addition, the temperature of the hot flue gas is high and can be higher than 1000 ℃ at most, and the hot flue gas has strong corrosiveness, so that the performance of the heat exchanger under the high-temperature condition is highly required. In order to meet the requirements, a cast iron plate with temperature resistance and corrosion resistance can be used as a material of a heat exchange device in the preheater.
But the weldability of cast iron is poor, is difficult to guarantee sealed effect through the welding, then the connection seal reliability between the difficult assurance heat transfer device, and the welding seam easily appears and gives off heat to it is extravagant to cause the heat, and the joint strength between two parts of welded part is poor, and welded connected mode is inconvenient for dismantle, and then maintains inconveniently.
Disclosure of Invention
The present utility model has been made in view of the problems existing in the existing air preheater sealing structure.
Therefore, the utility model aims to provide the air preheater sealing structure, which solves the problems that the weldability of cast iron is poor, the sealing effect is difficult to ensure by welding, the connection sealing reliability between heat exchange devices is difficult to ensure, the welding seam is easy to generate and emit heat, the heat is wasted, the connection strength between two parts at the welding position is poor, the welded connection mode is inconvenient to detach, and further the maintenance is inconvenient.
In order to solve the technical problems, according to one aspect of the present utility model, the following technical solutions are provided:
the air preheater sealing structure comprises a first cast iron plate heat exchanger, a second cast iron plate heat exchanger, a sealing piece with a T-shaped section and a pressing plate, wherein the pressing plate is connected with the first cast iron plate heat exchanger and the second cast iron plate heat exchanger in a clamping manner through a pressing plate fastening device, and the pressing plate fastening device applies pressure to the T-shaped sealing piece to enable the T-shaped sealing piece to be tightly attached to the first cast iron plate heat exchanger and the second cast iron plate heat exchanger.
As a preferable scheme of the air preheater sealing structure, the utility model comprises the following steps: the lower vertical edge of the T-shaped sealing piece extends into the space between the edges of the first cast iron plate heat exchanger and the second cast iron plate heat exchanger, and the upper horizontal edge of the T-shaped sealing piece is attached to the outer walls of the first cast iron plate heat exchanger and the second cast iron plate heat exchanger; the outer surface of the part of the T-shaped sealing piece which does not extend into the space between the edges of the first cast iron plate heat exchanger and the second cast iron plate heat exchanger is pressed with a pressing plate.
As a preferable scheme of the air preheater sealing structure, the utility model comprises the following steps: the pressing plate fastening device comprises a bolt, one end of the bolt is provided with a clamping rod, and a spring is sleeved on the bolt.
As a preferable scheme of the air preheater sealing structure, the utility model comprises the following steps: the first cast iron plate heat exchanger and the second cast iron plate heat exchanger are provided with the same cavity and through holes, and limiting plates are arranged at the junctions of the cavity and the through holes.
As a preferable scheme of the air preheater sealing structure, the utility model comprises the following steps: and the limiting disc is provided with a through hole, a groove and a side through hole, and the groove and the side through hole are communicated with the through hole.
As a preferable scheme of the air preheater sealing structure, the utility model comprises the following steps: the T-shaped sealing element is composed of a first sealing gasket and a second sealing gasket.
As a preferable scheme of the air preheater sealing structure, the utility model comprises the following steps: the first sealing gasket and the second sealing gasket are distributed in a T shape.
As a preferable scheme of the air preheater sealing structure, the utility model comprises the following steps: the first sealing gasket and the second sealing gasket are integrally formed into a whole structure.
Compared with the prior art:
1. the pressing plate fastening device is arranged to drive the pressing plate to press the T-shaped sealing element, so that sealing is realized, welding is not needed, and the problem of poor welding sealing effect is solved;
2. the clamp plate fastener is the joint with the connection mode of first cast iron plate heat exchanger, second cast iron plate heat exchanger, and the quick installation of being convenient for later stage is convenient for to the change of "T" sealing member.
Drawings
FIG. 1 is a schematic diagram of a structure provided by the present utility model;
FIG. 2 is an enlarged view of FIG. 1A provided in the present utility model;
FIG. 3 is a schematic view of a limiting plate according to the present utility model;
fig. 4 is a side view of fig. 1 provided by the present utility model.
In the figure: the first cast iron plate heat exchanger 1, the second cast iron plate heat exchanger 2, the first sealing gasket 3, the pressing plate 4, the second sealing gasket 5, the bolt 61, the spring 62, the knob 63, the limit disc 64, the side through hole 641, the groove 642, the clamping rod 65, the cavity 7 and the through hole 8.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.
Example 1:
the utility model provides a sealing structure of an air preheater, referring to fig. 1-4, the sealing structure comprises a first cast iron plate heat exchanger 1, a second cast iron plate heat exchanger 2, a sealing piece with a T-shaped section and a pressing plate 4, wherein the pressing plate 4 is connected with the first cast iron plate heat exchanger 1 and the second cast iron plate heat exchanger 2 in a clamping way through a pressing plate fastening device, and the pressing plate fastening device applies pressure to the T-shaped sealing piece to enable the T-shaped sealing piece to be tightly attached to the first cast iron plate heat exchanger 1 and the second cast iron plate heat exchanger 2.
The lower vertical edge of the T-shaped sealing piece extends into the space between the edges of the first cast iron plate heat exchanger 1 and the second cast iron plate heat exchanger 2, and the upper horizontal edge of the T-shaped sealing piece is attached to the outer walls of the first cast iron plate heat exchanger 1 and the second cast iron plate heat exchanger 2; the outer surface of the part of the T-shaped sealing element not going deep between the edges of the first cast iron plate heat exchanger 1 and the second cast iron plate heat exchanger 2 is pressed with the pressure plate 4.
The pressing plate fastening device comprises a bolt 61, one end of the bolt 61 is provided with a clamping rod 65, and the bolt 61 is sleeved with a spring 62.
The first cast iron plate heat exchanger 1 and the second cast iron plate heat exchanger 2 are provided with the same cavity 7 and through holes 8, the junction of the cavity 7 and the through holes 8 is provided with a limiting disc 64, the limiting disc 64 is directly welded on the inner wall of the cavity 7, and the through holes on the limiting disc 64 and the through holes 8 are coaxially distributed.
The limiting plate 64 is provided with a through hole, a groove 642 and a side through hole 641, the groove 642 is used for clamping the clamping rod 65 to limit the bolt 61 to be separated, the groove 642 and the side through hole 641 are communicated with the through hole, the T-shaped sealing element is composed of a first sealing gasket 3 and a second sealing gasket 5, and the first sealing gasket 3 and the second sealing gasket 5 are distributed in a T shape.
When the heat exchanger is specifically used, the first sealing gasket 3 and the second sealing gasket 5 which form the T-shaped sealing piece are respectively arranged between the edges of the first cast iron plate heat exchanger 1 and the second cast iron plate heat exchanger 2 and on the outer walls of the first cast iron plate heat exchanger 1 and the second cast iron plate heat exchanger 2; the latch rod 65 is passed through the side through hole 641 and the latch 61 is rotated until the latch rod 65 is aligned with the recess 642, the latch rod 65 is driven by the elastic force of the spring 62 to enter the recess 642 to stabilize the latch 61, and the pressing plate 4 is driven by the elastic force of the spring 62 to press the second gasket 5 to realize sealing.
Example 2:
unlike example 1, the following is: the first sealing gasket 3 and the second sealing gasket 5 are integrally formed; the T-shaped sealing element is convenient to replace and install.
When the heat exchanger is specifically used, the first sealing gasket 3 and the second sealing gasket 5 which form the T-shaped sealing piece are respectively arranged between the edges of the first cast iron plate heat exchanger 1 and the second cast iron plate heat exchanger 2 and on the outer walls of the first cast iron plate heat exchanger 1 and the second cast iron plate heat exchanger 2; the latch rod 65 is passed through the side through hole 641 and the latch 61 is rotated until the latch rod 65 is aligned with the recess 642, the latch rod 65 is driven by the elastic force of the spring 62 to enter the recess 642 to stabilize the latch 61, and the elastic force of the spring 62 drives the pressing plate 4 to press the T-shaped sealing member to achieve sealing.
Although the utility model has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. Air preheater seal structure, including first cast iron plate heat exchanger (1) and second cast iron plate heat exchanger (2), still including sealing member and clamp plate (4) that the cross-section is "T" type, its characterized in that: the pressing plate (4) is connected with the first cast iron plate heat exchanger (1) and the second cast iron plate heat exchanger (2) in a clamping mode through a pressing plate fastening device, and the pressing plate fastening device applies pressure to the T-shaped sealing piece to enable the T-shaped sealing piece to be tightly attached to the first cast iron plate heat exchanger (1) and the second cast iron plate heat exchanger (2).
2. Air preheater sealing structure according to claim 1, characterized in that the lower vertical edge of the "T" shaped sealing element extends between the edges of the first cast iron plate heat exchanger (1) and the second cast iron plate heat exchanger (2), the upper lateral edge of the "T" shaped sealing element being attached to the outer walls of the first cast iron plate heat exchanger (1) and the second cast iron plate heat exchanger (2); the outer surface of the part of the T-shaped sealing piece which does not extend into the space between the edges of the first cast iron plate heat exchanger (1) and the second cast iron plate heat exchanger (2) is pressed with a pressing plate (4).
3. The air preheater sealing structure according to claim 1, wherein the pressing plate fastening device comprises a bolt (61), one end of the bolt (61) is provided with a clamping rod (65), and a spring (62) is sleeved on the bolt (61).
4. An air preheater sealing structure according to claim 3, wherein the first cast iron plate heat exchanger (1) and the second cast iron plate heat exchanger (2) are provided with the same cavity (7) and through holes (8), and a limit disc (64) is arranged at the junction of the cavity (7) and the through holes (8).
5. The air preheater sealing structure according to claim 4, wherein the limiting plate (64) is provided with a through hole, a groove (642) and a side through hole (641), and the groove (642) and the side through hole (641) are both communicated with the through hole.
6. Air preheater sealing structure according to claim 2, characterized in that the "T" shaped sealing element is constituted by a first sealing gasket (3) and a second sealing gasket (5).
7. The air preheater sealing structure according to claim 6, wherein the first sealing gasket (3) and the second sealing gasket (5) are distributed in a T-shape.
8. Air preheater sealing structure according to claim 6, characterized in that the first gasket (3) and the second gasket (5) are of an integrally formed unitary structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222969070.0U CN219674284U (en) | 2022-11-08 | 2022-11-08 | Air preheater sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222969070.0U CN219674284U (en) | 2022-11-08 | 2022-11-08 | Air preheater sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219674284U true CN219674284U (en) | 2023-09-12 |
Family
ID=87898835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222969070.0U Active CN219674284U (en) | 2022-11-08 | 2022-11-08 | Air preheater sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219674284U (en) |
-
2022
- 2022-11-08 CN CN202222969070.0U patent/CN219674284U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |