CN217301588U - Sealing device of rotary air preheater - Google Patents
Sealing device of rotary air preheater Download PDFInfo
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- CN217301588U CN217301588U CN202123181988.0U CN202123181988U CN217301588U CN 217301588 U CN217301588 U CN 217301588U CN 202123181988 U CN202123181988 U CN 202123181988U CN 217301588 U CN217301588 U CN 217301588U
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- air preheater
- movable plate
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- fixedly connected
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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 rotary air heater's sealing device, with air preheater rotor fixed connection, and it is rotatory to drive air preheater rotor 2 through the air preheater rotor, drive sealing device and sector plate cooperation, with 2 fixed connection's of air preheater rotor partition panel, partition panel fixedly connected with fixed plate, the fixed plate articulates there is a fly leaf, the fly leaf passes through the loose pin axle with the fixed plate and forms the shear arm structure, fly leaf fixedly connected with one and fixed plate cooperation elastic sealing subassembly, elastic sealing subassembly is fixed in the fly leaf and keeps away from 2 one sides of air preheater rotor, elastic sealing subassembly with thereby sector plate cooperation drives the fly leaf and winds pin joint elasticity free lift. Form scissors arm structure through fixed plate and fly leaf, guarantee the installation clearance through elasticity seal assembly and sector plate cooperation simultaneously and guarantee the rate of leaking out to the radial rate of leaking out that the thermal state of elastic compensation air preheater warp the production goes, greatly reduced the rate of leaking out, and simple structure has changed, the life of extension product.
Description
Technical Field
The utility model relates to a rotary air heater's sealing device, especially an air heater roll formula elastic sealing device.
Background
At present, an air preheater is a heat exchange device used for a large-sized boiler, and the air leakage rate of the air preheater directly influences the efficiency of the boiler. The air leakage rate of the air preheater is an important index influencing the efficiency of the boiler, and the lower the air leakage rate of the air preheater is, the higher the efficiency of the boiler is. The air leakage of the air preheater unit mostly occurs in radial sealing, generally accounts for more than 75% of the total air leakage, and more than 10% of the total air leakage of many units after several years of operation, the radial sealing of the traditional air preheater always adopts hard sealing pieces which have insufficient elasticity, the radial clearance can be adjusted to the design value in the cold state, but after the air preheater is heated, the rotor is deformed like a mushroom due to the large temperature difference between the cold end and the hot end of the rotor, a triangular air leakage area is formed at the radial outer side, so that the air leakage rate is increased, and later, sliding contact type elastic sealing appears in the market, because the elastic sealing surface and the sector plate slide and rub for a long time, the sector plate needs to be replaced for one or two years, the current of the driving motor is increased by about 3-5A, the service power consumption can be increased, the best effect of 6% can be achieved after transformation, and the service life of the product is short.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an air heater roll formula elastic sealing device that can effectively solve above-mentioned technical problem.
In order to achieve the purpose of the utility model, the following technical proposal is adopted: a sealing device of a rotary air preheater is fixedly connected with an air preheater rotor, the air preheater rotor drives the sealing device to be matched with a sector plate, and the sealing device is characterized in that a bin partition plate is fixedly connected with the air preheater rotor, the bin partition plate is fixedly connected with a fixed plate, the fixed plate is hinged with a movable plate, the movable plate and the fixed plate form a shear arm structure through a movable pin shaft, the movable plate is fixedly connected with an elastic sealing assembly matched with the fixed plate, and the elastic sealing assembly is fixed on one side of the movable plate far away from the air preheater rotor; the elastic sealing assembly is matched with the sector plate so as to drive the movable plate to elastically and freely lift around the hinged point.
Preferably, the fixed plate is fixedly connected with a deep U-shaped latch plate with an opening facing downwards, the movable plate rotates around the hinge point and is matched with the deep U-shaped latch plate, and the movable plate is fixedly connected with two rollers in contact with the sector plate.
Preferably, the elastomeric seal assembly comprises: the movable plate is fixed on the movable plate, the movable plate is fixed on the fixed plate, the movable plate is fixedly connected with the movable plate, and the movable plate is fixedly connected with the movable plate.
Preferably, the movable plate is fixedly connected with a deep U-shaped latch plate with an opening facing downwards, the fixed plate rotates around the hinge point and is matched with the deep U-shaped latch plate, and the deep U-shaped latch plate is fixedly connected with two rollers in contact with the sector plate.
Preferably, the resilient seal assembly comprises: the movable plate comprises a movable plate and a fixed plate, a first spring seat fixed with the movable plate and a second spring seat fixedly connected with the fixed plate, a compression spring is arranged between the first spring seat and the second spring seat, a bolt for adjusting the pressing force of the compression spring is connected between the movable plate and the fixed plate, the outer side wall of the bolt is sleeved with the compression spring, and the fixed plate is provided with a limit pin for controlling the upward height of the movable plate.
Preferably, both sides of the sector plate are provided with guide blocks which are matched with the elastic sealing assembly.
Preferably, the method further comprises the following steps: and the length of the fixed sealing plate and the length of the movable rod are respectively one half of that of the partition plate.
Compared with the prior art, the utility model has the following beneficial effects
Form scissors arm structure through fixed plate and fly leaf, guarantee the installation clearance through elasticity seal assembly and sector plate cooperation simultaneously and guarantee the rate of leaking out to the radial rate of leaking out that the thermal state of elastic compensation air preheater warp the production goes, greatly reduced the rate of leaking out, and simple structure has changed, the life of extension product.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below.
FIG. 1 is a schematic view of a sealing device of a rotary air preheater according to an embodiment of the present invention contacting a hot end sector plate;
FIG. 2 is a schematic view of a sealing device of a rotary air preheater according to an embodiment of the present invention contacting a cold end sector plate;
FIG. 3 is a side view of the sealing means of the rotary air preheater of the present invention contacting the hot end sector plate;
FIG. 4 is a side view of the sealing device of the rotary air preheater of the present invention contacting the cold end sector plate.
Description of the figures
2. The air preheater rotor 3, the partition plate 4, the fixed plate 5, the movable plate 6, the deep U-shaped bolt plate 7, the first spring seat 8, the second spring seat 9, the bolt 10, the limit pin 11, the guide block 12, the fixed sealing plate 13, the roller 14 and the sector plate.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 and 2, a sealing device of a rotary air preheater is fixedly connected with an air preheater rotor 2, the air preheater rotor 2 drives the sealing device to be matched with a sector plate 14, and the air preheater rotor 2 is fixedly connected with a partition plate 3.
The partition plate 3 is fixedly connected with a fixed plate 4, the fixed plate 4 is hinged with a movable plate 5, a fixed sealing plate 12 fixed with the partition plate 3 is provided, and the lengths of the fixed sealing plate 12 and the movable rod are half of the length of the partition plate 3 (the length of the fixed sealing plate 12 is selected according to actual requirements, and the mushroom-shaped deformation gap of the existing air preheater mainly occurs at the radial outer side, so that the connecting rod is arranged at the position 1/2 to ensure the gap to ensure the air leakage rate, thereby improving the adaptation degree of the sealing device).
The movable plate 5 and the fixed plate 4 form a scissor arm structure through a movable pin shaft, the movable plate 5 is fixedly connected with an elastic sealing assembly matched with the fixed plate 4, and the elastic sealing assembly is fixed on one side, away from the air preheater rotor 2, of the movable plate 5. The elastic sealing component is matched with the fixed sealing plate 12 to form a complete seal, and the elastic sealing component is matched with the sector plate 14 so as to drive the movable plate 5 to elastically and freely lift around the hinged point.
As shown in fig. 1 and 4, when the sealing device needs to be in contact with the hot end of the sector plate 14, the sealing device is in contact with the upper surface of the sector plate 14, the fixing plate 4 is fixedly connected with a deep U-shaped latch plate 6 with a downward opening, and the downward opening reduces dust leakage into the deep U-shaped latch plate 6, so that the phenomenon of dust falling is reduced. The movable plate 5 rotates around the hinge point and is matched with the deep U-shaped bolt plate 6, and the movable plate 5 is fixedly connected with two rollers 13 which are contacted with the sector plates 14.
When the two rollers 13 move along the sector plate 14, a small gap is left between the movable plate 5 and the sector plate 14, so that the phenomenon of blockage of the sealing assembly is reduced. The friction force between the roller 13 and the sector plate 14 is reduced, the service life of the sector plate 14 is prolonged, the guide blocks 11 matched with the elastic sealing assemblies are arranged on two sides of the sector plate 14, and the roller 13 can fall onto the sector plate 14 conveniently through the guide blocks 11.
The elastomeric seal assembly includes: a first spring seat 7 fixed to the movable plate 5 and a second spring seat 8 fixedly connected to the fixed plate 4.
A compression spring is arranged between the first spring seat 7 and the second spring seat 8, a bolt 9 for adjusting the pressing force of the compression spring is connected between the first spring seat 7 and the second spring seat 8, one end of the bolt 9 is rotatably connected with the first spring seat 7, the other end of the bolt is in threaded connection with the second spring seat 8, the bolt 9 rotates, and meanwhile, the first spring seat 7 is close to the second spring seat 8 to adjust the pressing force of the compression spring, the bolt 9 controls the downward distance of the movable plate 5 simultaneously, the outer side wall of the bolt 9 is sleeved with the compression spring, and the fixed plate 4 is provided with a limit pin 10 for controlling the upward distance of the movable plate 5.
As shown in fig. 2 and 3, when the sealing device needs to be in contact with the cold end of the sector plate 14, the movable plate 5 is fixedly connected with a deep U-shaped latch plate 6 with an opening facing downwards, and the opening facing downwards reduces dust leaking into the deep U-shaped latch plate 6, so that the phenomenon that dust falls in is reduced.
The fixed plate 4 rotates around the hinge point and is matched with the deep U-shaped bolt plate 6, and the deep U-shaped bolt plate 6 is fixedly connected with two rollers 13 which are contacted with the sector plate 14. The friction force between the roller 13 and the sector plate 14 is reduced, the service life of the sector plate 14 is prolonged, the two sides of the sector plate 14 are respectively provided with the guide block 11 matched with the elastic sealing assembly, and the guide blocks 11 are convenient for the roller 13 to better fall onto the sector plate 14.
The elastomeric seal assembly includes: the movable plate pressing device comprises a first spring seat 7 fixed with the movable plate 5 and a second spring seat 8 fixedly connected with the fixed plate 4, a compression spring is installed between the first spring seat 7 and the second spring seat 8, a bolt 9 for adjusting the pressing force of the compression spring is connected between the movable plate 5 and the fixed plate 4, one end of the bolt 9 is rotatably connected with the first spring seat 7, the other end of the bolt is in threaded connection with the second spring seat 8, the first spring seat 7 is close to the second spring seat 8 when the bolt 9 rotates, so that the pressing force of the compression spring is adjusted, the outer side wall of the bolt 9 is sleeved with the compression spring, and the fixed plate 4 is provided with a limiting pin 10 for controlling the downward distance of the movable plate 5.
As shown in fig. 1 and 4, in operation, when the hot end sector plate 14 deforms, the air preheater rotor 2 is driven to rotate by the air preheater rotor 2, the sealing device is driven to be matched with the sector plate 14, the roller 13 is matched with the guide block 11 to drive the sector plate 14 to be contacted with the roller 13, when the roller 13 moves to deform, the roller 13 drives the movable plate 5 to move towards the deep U-shaped latch plate 6 and presses the compression spring, so that the gap between the movable plate 5 and the sector plate 14 is ensured at the moment when the roller 13 moves along the sector plate 14.
As shown in fig. 2 and 3, when the cold end sector plate 14 deforms, the air preheater rotor 2 is driven to rotate by the air preheater rotor 2, the sealing device is driven to be matched with the sector plate 14, the roller 13 is matched with the guide block 11 to drive the sector plate 14 to be contacted with the roller 13, when the roller 13 moves to deform, the roller 13 drives the deep U-shaped plug pin plate 6 to be contacted with the movable plate 5 and extrudes the compression spring, and therefore, a gap between the U-shaped plug pin plate and the sector plate 14 is ensured when the roller 13 moves along the sector plate 14.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Claims (7)
1. A sealing device of a rotary air preheater is fixedly connected with an air preheater rotor, the air preheater rotor drives the sealing device to be matched with a sector plate, and the sealing device is characterized in that a bin partition plate is fixedly connected with the air preheater rotor, the bin partition plate is fixedly connected with a fixed plate, the fixed plate is hinged with a movable plate, the movable plate and the fixed plate form a shear arm structure through a movable pin shaft, the movable plate is fixedly connected with an elastic sealing assembly matched with the fixed plate, and the elastic sealing assembly is fixed on one side of the movable plate far away from the air preheater rotor; the elastic sealing assembly is matched with the sector plate so as to drive the movable plate to elastically and freely lift around the hinged point.
2. A seal arrangement for a rotary air preheater as recited in claim 1, wherein said stationary plate is fixedly connected to a deep U-shaped latch plate having a downwardly opening, said movable plate rotates about a hinge point and engages with the deep U-shaped latch plate, and said movable plate is fixedly connected to two rollers contacting said sector plates.
3. A seal arrangement for a rotary air preheater as recited in claim 2, wherein said resilient seal assembly comprises: the movable plate is fixed on the movable plate, the movable plate is fixed on the fixed plate, the movable plate is fixedly connected with the movable plate, and the movable plate is fixedly connected with the movable plate.
4. A seal arrangement for a rotary air preheater as recited in claim 1, wherein said movable plate is fixedly connected to a deep U-shaped latch plate having a downward opening, said fixed plate rotates about a hinge point and engages with the deep U-shaped latch plate, and the deep U-shaped latch plate is fixedly connected to two rollers contacting with the sector plate.
5. A seal arrangement for a rotary air preheater according to claim 4, wherein said resilient seal assembly comprises: the movable plate comprises a movable plate and a fixed plate, a first spring seat fixed with the movable plate and a second spring seat fixedly connected with the fixed plate, a compression spring is arranged between the first spring seat and the second spring seat, a bolt for adjusting the pressing force of the compression spring is connected between the movable plate and the fixed plate, the outer side wall of the bolt is sleeved with the compression spring, and the fixed plate is provided with a limit pin for controlling the upward height of the movable plate.
6. A rotary air preheater seal assembly according to claim 1, wherein said sector plates are provided on both sides with guide blocks for engaging said elastomeric seal assembly.
7. A seal arrangement for a rotary air preheater as recited in claim 1, further comprising: and the length of the fixed sealing plate and the length of the movable rod are respectively one half of that of the partition plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123181988.0U CN217301588U (en) | 2021-12-17 | 2021-12-17 | Sealing device of rotary air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123181988.0U CN217301588U (en) | 2021-12-17 | 2021-12-17 | Sealing device of rotary air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217301588U true CN217301588U (en) | 2022-08-26 |
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ID=82920225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123181988.0U Active CN217301588U (en) | 2021-12-17 | 2021-12-17 | Sealing device of rotary air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217301588U (en) |
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2021
- 2021-12-17 CN CN202123181988.0U patent/CN217301588U/en active Active
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