CN203615357U - Lever type sealing device of air preheater - Google Patents
Lever type sealing device of air preheater Download PDFInfo
- Publication number
- CN203615357U CN203615357U CN201320842975.XU CN201320842975U CN203615357U CN 203615357 U CN203615357 U CN 203615357U CN 201320842975 U CN201320842975 U CN 201320842975U CN 203615357 U CN203615357 U CN 203615357U
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- fixed head
- sealing
- elastic force
- adjusting unit
- force adjusting
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- 238000007789 sealing Methods 0.000 title claims abstract description 103
- 238000010438 heat treatment Methods 0.000 claims description 33
- 239000000428 dust Substances 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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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 provides a lever type sealing device of an air preheater. The lever type sealing device of the air preheater comprises a fixing plate and a rotating plate, wherein the fixing plate and the rotating plate are hinged through a center shaft, the rotating plate comprises a sealing part and an elasticity adjusting part, wherein the sealing part stretches in the first direction with the center shaft as the axis, the elasticity adjusting part stretches in the second direction with the center shaft as the axis, the first direction and the second direction are different, and the sealing part and the elasticity adjusting part are fixedly connected. The lever type sealing device of the air preheater further comprises a connecting spring which is arranged between the elasticity adjusting part and the fixing plate, the telescopic direction of the connecting spring is perpendicular to the center shaft, the distance d2 between the telescopic direction of the connecting spring and the center shaft is larger than zero, and the direction that a sector plate applies pressure to the sealing part is different from the telescopic direction of the connecting spring. By the adoption of the lever type sealing device of the air preheater, the air leakage rate of the air preheater can be effectively controlled, efficiency of a boiler is improved, and energy consumption is reduced.
Description
Technical field
The utility model relates to swinging air preheat field, belongs to the sealing device of air preheater, especially a kind of lever air pre-heating device sealing device.
Background technology
Air preheater is the main auxiliary equipment in thermal power plant, is to utilize fume afterheat to carry out the heat-exchange apparatus of heating boiler required air.The basic structure of air pre-heater with rotary heating surface: mainly formed by cylindrical rotor, fixed housing, sealing device, heat transfer element, turning cylinder transmission device etc.Rotor is divided into many fan-shaped storehouses lattice by radial and axial partition panel, fills waveform heat accumulation plate as heat transfer element in the lattice of storehouse.The fanning strip of shell is divided into three parts the flow area of rotor, i.e. flue gas circulation part, circulation of air part and seal area.The flue gas circulation part of rotor communicates with shell upper and lower part gas flue, and the circulation of air part shell upper and lower part air channel of rotor communicates.A part of blowing air of rotor like this, the logical flue gas of a part, some is the seal area in cigarette, wind cross section.
When hot operation, because internal rotor exists heat exchange, top mean temperature high (being called hot junction), bottom mean temperature low (being called cold junction), therefore rotor can produce " mushroom " distortion.In addition, rotor also can produce axial expansion, and underbeam is bent downwardly distortion, if seal clearance does not have Correctly adjust when cold conditions, in hot situation, some places gap will increase (as outside, hot junction) so, and some places gap will reduce (as cold junction outside), not only can cause a large amount of leakages, and can there is serious friction, even bite.
Utility model content
The utility model provides a kind of lever air pre-heating device sealing device, with the problem that solves existing air pre-heater sealing weak effect or leak out.
For this reason, the utility model proposes a kind of lever air pre-heating device sealing device, for being arranged between fanning strip and shifting board, described lever air pre-heating device sealing device comprises:
By the hinged fixed head of central shaft and swivel plate;
Described swivel plate comprises: the sealing stretching out along first direction take described central shaft as axle and the elastic force adjusting unit of stretching out along second direction take described central shaft as axle, described first direction is different from the direction of described second direction, and described sealing is fixedly connected with elastic force adjusting unit;
Described lever air pre-heating device sealing device also comprises: be arranged on the linking springs between described elastic force adjusting unit and fixed head, the vertical described central shaft of flexible direction of described linking springs, and the flexible direction of described linking springs and the distance d2 of described central shaft are greater than zero, fanning strip is different from the flexible direction of described linking springs to the direction of exerting pressure of described sealing.
Further, described linking springs is extension spring, described sealing and elastic force adjusting unit lay respectively at the both sides of described central shaft, between described sealing and described fixed head, form the first obtuse angle, described elastic force adjusting unit is positioned at outside described the first obtuse angle, and the angle forming between described sealing and described elastic force adjusting unit is greater than 90 degree.
Further, the angle between described elastic force adjusting unit and described fixed head is acute angle or is 0 degree angle.
Further, described sealing and elastic force adjusting unit are tabular, and described fixed head connects the shifting board of air preheater.
Further, described sealing is provided with the wear plate that can dismantle.
Further, described elastic force adjusting unit is provided with the adjusting portion of the described linking springs link position of multiple adjustings, and described adjusting portion regulates the described size apart from d2.
Further, described swivel plate is divided into multisection type Split type structure along described central axis direction, and described fixed head is connected on described central shaft by axle hinge joints.
Further, described linking springs is extension spring, described fixed head comprises: for connecting first fixed head and the second fixed head that is fixedly connected with described the first fixed head of shifting board, described the first fixed head and the second fixed head intersect at described central axis, described the first fixed head and described sealing form the second obtuse angle, described elastic force adjusting unit and described the second fixed head are positioned at the same side of the broken line that described the first fixed head and described sealing be linked to be, and described elastic force adjusting unit is between described the first fixed head and the second fixed head, described the second fixed head is between described elastic force adjusting unit and described sealing, described linking springs is arranged between described elastic force adjusting unit and described the second fixed head.
Further, described linking springs is stage clip, forms the 3rd obtuse angle between described sealing and described fixed head, within described elastic force adjusting unit is positioned at described the 3rd obtuse angle.
Further, described sealing and elastic force adjusting unit are integral type structure, on described axle joint, offer reveal dust let out dirt groove.
In the utility model, the sealing of swivel plate is for matching with fanning strip, in the time that sealing contacts with fanning strip, form the pressure moment of fanning strip to sealing in a side of central shaft, form linking springs at the opposite side of central shaft the elastic force adjusting unit elasticity of swivel plate is adjusted to moment, thereby, realize and contacting with the self adaptation of air preheater fanning strip.Once shifting board turns over fanning strip, swivel plate restores to the original state.And then adjustment moment of the present utility model and pressure moment are formed at respectively the both sides of central shaft, like this, just form lever adjustment, made the reasonable stress of swivel plate, adjusted flexible, highly sensitive, adjustment space is large, and can not exchange full employment because of fanning strip distortion and exert an influence.
And then the utility model adopts extension spring to adjust the sealing of swivel plate, the advantage of extension spring is: it is long that extension spring has the life-span, the features such as Stability Analysis of Structures, swivel plate and fixed head are by extension spring control relative position, and the pulling force that extension spring is subject to concentrates on a line, have realized the stable of structure.
Accompanying drawing explanation
Fig. 1 is the operation principle structural representation of the lever air pre-heating device sealing device of the utility model the first embodiment, wherein shows the state before swivel plate contacts with fanning strip;
Fig. 2 is the operation principle structural representation of the lever air pre-heating device sealing device of the utility model the first embodiment, wherein shows state and force analysis after swivel plate contacts with fanning strip;
Fig. 3 is the stereochemical structure of the lever air pre-heating device sealing device of the utility model the first embodiment;
Fig. 4 is the side-looking structure of the lever air pre-heating device sealing device of the utility model the first embodiment;
Fig. 5 is the side-looking structure of the lever air pre-heating device sealing device of the utility model the second embodiment;
Fig. 6 is the side-looking structure of the lever air pre-heating device sealing device of the utility model the 3rd embodiment; .
Drawing reference numeral explanation:
1, lever air pre-heating device sealing device 10 moving directions 11, fixed head 117, let out dirt groove 13, central shaft 15, swivel plate 151, sealing 155, wear plate 153, elastic force adjusting unit 159, adjusting portion 17, spring
2, lever air pre-heating device sealing device 211, fixed head 213, central shaft 215, swivel plate 2151, sealing 2153, elastic force adjusting unit 217, spring 255 wear plates
3, lever air pre-heating device sealing device 313, central shaft 315, swivel plate 3151 sealings 3153, elastic force adjusting unit 317, spring 3111, the first fixed head 3113, the second fixed head
4, fanning strip 6, shifting board
The specific embodiment
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast accompanying drawing explanation the utility model.
As shown in Figure 1, Figure 3 and Figure 4, the lever air pre-heating device sealing device 1 of the utility model the first embodiment comprises:
By the hinged fixed head 11 of central shaft 13 and swivel plate 15; As Fig. 1, fixed head 11 is for connecting the shifting board 6 of air preheater,
As Fig. 3, described swivel plate 15 comprises: the sealing 151 stretching out along first direction take described central shaft 13 as pole axis and the elastic force adjusting unit 153 of stretching out along second direction take described central shaft as axle, and sealing 151, for contacting with fanning strip, seals fanning strip; Sealing and elastic force adjusting unit are for example tabular or strip or bulk, be convenient to processing and stressed, described first direction is different from the direction of described second direction, described sealing 151 is fixedly connected with or is rigidly connected with elastic force adjusting unit 153, in the time that fixed head moves along direction of advance 10 along with shifting board 6, sealing 151 is subjected to displacement by fanning strip 4 pressure, and elastic force adjusting unit 153 is also subjected to displacement thereupon;
As Fig. 3, described lever air pre-heating device sealing device 1 also comprises: be arranged on the linking springs 17 between described elastic force adjusting unit 153 and fixed head 11, the vertical described central shaft 13 of flexible direction of described linking springs 17, Fig. 2 shows the state after swivel plate contacts with fanning strip, as Fig. 2, the flexible direction of described linking springs 17 and the distance d2 of described central shaft 13 are greater than zero, to apply adjustment moment, the elastic force F2 that adjustment moment is linking springs and the product of d2, fanning strip 4 to the direction of exerting pressure F1(pressure of described sealing perpendicular to fanning strip) different from the flexible direction of described linking springs 17, like this, make to form the pressure moment of fanning strip to sealing in a side of central shaft, form linking springs at the opposite side of central shaft the elastic force adjusting unit elasticity of swivel plate is adjusted to moment, thereby form lever adjustment, make the reasonable stress of swivel plate, adjust flexibly, highly sensitive, realize and contacting with the self adaptation of air preheater fanning strip.Once shifting board turns over fanning strip, swivel plate restores to the original state.
Further, as Fig. 1 and Fig. 2, described linking springs 17 is extension spring, after swivel plate contacts with fanning strip, linking springs 17 is stretched, as Fig. 3, described sealing 151 and elastic force adjusting unit 153 lay respectively at the both sides of described central shaft 13, between described sealing 151 and described fixed head 11, form the first obtuse angle, described elastic force adjusting unit 153 is positioned at outside described the first obtuse angle, and the angle forming between described sealing and described elastic force adjusting unit is greater than 90 degree.Like this, the arm of force of linking springs that can central shaft side direction is larger, thereby, adjust more flexibly, make the sealing property of sealing better.
The features such as it is long that extension spring has the life-span, Stability Analysis of Structures, swivel plate and fixed head are by extension spring control relative position, and the pulling force that extension spring is subject to concentrates on a line, has realized the stable of structure.
Further, as Fig. 1 and Fig. 2, the angle between described elastic force adjusting unit 153 and described fixed head 11 is acute angle or is 0 degree angle, so that linking springs 17 reasonable stress.
Further, as Fig. 3, the end of described sealing 151 is provided with the wear plate 155 that can dismantle, increases wearing coefficient, and changes conveniently, has protected the main body of swivel plate.
Further, as Fig. 4, described elastic force adjusting unit 153 is provided with the adjusting portion 159 of described linking springs 17 link positions of multiple adjustings, and described adjusting portion 159 regulates the described size apart from d2.The hook that adjusting portion 159 is pendulum spring or the seat hole that holds spring, linking springs 17 is connected in the adjusting portion 159 of diverse location, the flexible direction of linking springs 17 has different variations from the distance d2 of described central shaft, thereby cause the adjustment arm of force to change, thereby, can adapt to the needs of on-the-spot varying environment.
Further, as Fig. 4, described swivel plate is divided into multisection type Split type structure along described central axis direction, for example, swivel plate 15 is divided into three stage structure, independently central shaft of every section of swivel plate correspondence, take three sections of axles, each swivel plate independently rotates, and has solved shaft distortion or bite problem that the unbalance stress of existing sealing device causes, makes the swivel plate can be because unbalance stress damages structure itself or central shaft.
Described fixed head is connected on described central shaft by axle hinge joints, and described central shaft is provided with anti-wearing liner, has played effect wear-resisting and reinforcement structural stability, and has been unlikely to stuck because of the distortion of axle.
Further, as shown in Figure 4, described sealing 151 be integral type structure with elastic force adjusting unit 153, to form interlock, what on the axle joint of described fixed head, offer leakage dust lets out dirt groove 117, makes dust be unlikely to accumulate in central shaft.
Sealing device of the present utility model is arranged on the radially position of upper and lower side, side and the axial seal of shifting board of air preheater rotor, coordinate the hard sealing plate of shifting board to use, in situation without hard sealing plate, can use equally, it is with the difference of hard sealing plate, and the rotating part of this diaphragm seal can or reduce and adjusts to voluntarily optimum state along with the increase in hot lower gap.
Fixed head is arranged on radially on shifting board, and fixed head connects swivel plate by central shaft, and swivel plate is divided into multiple completely independently parts, and (being for example two or three) is arranged on fixed head side by side.Swivel plate, take central shaft as fulcrum, rotates around fixed head or central shaft, passes through the relative position of the flexible adjustment of linking springs between swivel plate and fixed head, realizes with the self adaptation of air preheater fanning strip and contacting.
Further, Fig. 5 shows the structure of the lever air pre-heating device sealing device of the utility model the second embodiment, in this embodiment, the end of sealing 3151 can be provided with the wear plate that can dismantle, sealing and elastic force adjusting unit are tabular, on the axle joint of fixed head, also can offer reveal dust let out dirt groove, in elastic force adjusting unit, also can be provided with the adjusting portion of the described linking springs link position of multiple adjustings, described adjusting portion regulates the described size apart from d2, and described linking springs is also extension spring.
This embodiment is except above-mentioned and the first embodiment something in common, and the main distinction of the two has:
Described fixed head comprises: for connecting first fixed head 3111 and the second fixed head 3113 that is fixedly connected with described the first fixed head of shifting board, described the first fixed head 3111 and the second fixed head 3113 intersect at described central shaft 313 places, described the first fixed head 3111 forms the second obtuse angle with described sealing 3151, described elastic force adjusting unit 3153 and the second fixed head 3113 are positioned at the same side of the broken line that described the first fixed head 3111 and described sealing 3151 be linked to be, described elastic force adjusting unit 3153 and the second fixed head 3113 are positioned at the scope at above-mentioned the second obtuse angle in other words,
Described elastic force adjusting unit 3153 is between described the first fixed head 3111 and the second fixed head 3113, described the second fixed head 3113 is between described elastic force adjusting unit 3153 and described sealing 3151, and described linking springs 317 is arranged between described elastic force adjusting unit 3153 and described the second fixed head 3113.As shown in Figure 5, described the first fixed head form angle of being less than 90 degree crossing with the second fixed head, the angle between described elastic force adjusting unit and described the first fixed head is less than 90 degree, to reduce the stressed of linking springs.
Further, Fig. 6 shows the structure of the lever air pre-heating device sealing device of the utility model the 3rd embodiment, embodiment is same or similar with the first two: in this embodiment, the end of sealing 251 can be provided with the wear plate 255 that can dismantle, sealing and elastic force adjusting unit are tabular, on the axle joint of fixed head, also can offer reveal dust let out dirt groove, in elastic force adjusting unit, also can be provided with the adjusting portion of the described linking springs link position of multiple adjustings, described adjusting portion regulates the described size apart from d2;
This embodiment except with the first embodiment something in common, the main distinction of the two has: described linking springs 217 is stage clip.Wherein, between described sealing 2151 and described fixed head 211, form the 3rd obtuse angle, within described elastic force adjusting unit 2153 is positioned at described the 3rd obtuse angle.This set adapts to different installing spaces, reasonable stress.
The utility model can effectively be controlled the air leak rate of air curtain of air preheater, improves boiler efficiency, reduces energy consumption.
The foregoing is only the schematic specific embodiment of the utility model, not in order to limit scope of the present utility model.For each part of the present utility model can mutually combine under the condition of not conflicting; any those skilled in the art; do not depart from equivalent variations and the modification under the prerequisite of design of the present utility model and principle, done, all should belong to the scope of the utility model protection.
Claims (10)
1. a lever air pre-heating device sealing device, for being arranged between fanning strip and shifting board, is characterized in that, described lever air pre-heating device sealing device comprises:
By the hinged fixed head of central shaft and swivel plate;
Described swivel plate comprises: the sealing stretching out along first direction take described central shaft as axle and the elastic force adjusting unit of stretching out along second direction take described central shaft as axle, described first direction is different from the direction of described second direction, and described sealing is fixedly connected with elastic force adjusting unit;
Described lever air pre-heating device sealing device also comprises: be arranged on the linking springs between described elastic force adjusting unit and fixed head, the vertical described central shaft of flexible direction of described linking springs, and the flexible direction of described linking springs and the distance d2 of described central shaft are greater than zero, fanning strip is different from the flexible direction of described linking springs to the direction of exerting pressure of described sealing.
2. lever air pre-heating device sealing device as claimed in claim 1, it is characterized in that, described linking springs is extension spring, described sealing and elastic force adjusting unit lay respectively at the both sides of described central shaft, between described sealing and described fixed head, form the first obtuse angle, described elastic force adjusting unit is positioned at outside described the first obtuse angle, and the angle forming between described sealing and described elastic force adjusting unit is greater than 90 degree.
3. lever air pre-heating device sealing device as claimed in claim 2, is characterized in that, the angle between described elastic force adjusting unit and described fixed head is acute angle or is 0 degree angle.
4. lever air pre-heating device sealing device as claimed in claim 1, is characterized in that, described sealing and elastic force adjusting unit are tabular, and described fixed head connects the shifting board of air preheater.
5. lever air pre-heating device sealing device as claimed in claim 1, is characterized in that, described sealing is provided with the wear plate that can dismantle.
6. lever air pre-heating device sealing device as claimed in claim 1, is characterized in that, described elastic force adjusting unit is provided with the adjusting portion of the described linking springs link position of multiple adjustings, and described adjusting portion regulates the described size apart from d2.
7. lever air pre-heating device sealing device as claimed in claim 1, is characterized in that, described swivel plate is divided into multisection type Split type structure along described central axis direction, and described fixed head is connected on described central shaft by axle hinge joints.
8. lever air pre-heating device sealing device as claimed in claim 1, it is characterized in that, described linking springs is extension spring, described fixed head comprises: for connecting first fixed head and the second fixed head that is fixedly connected with described the first fixed head of shifting board, described the first fixed head and the second fixed head intersect at described central axis, described the first fixed head and described sealing form the second obtuse angle, described elastic force adjusting unit and described the second fixed head are positioned at the same side of the broken line that described the first fixed head and described sealing be linked to be, and described elastic force adjusting unit is between described the first fixed head and the second fixed head, described the second fixed head is between described elastic force adjusting unit and described sealing, described linking springs is arranged between described elastic force adjusting unit and described the second fixed head.
9. lever air pre-heating device sealing device as claimed in claim 1, is characterized in that, described linking springs is stage clip, forms the 3rd obtuse angle between described sealing and described fixed head, within described elastic force adjusting unit is positioned at described the 3rd obtuse angle.
10. lever air pre-heating device sealing device as claimed in claim 7, is characterized in that, described sealing and elastic force adjusting unit are integral type structure, on described axle joint, offer reveal dust let out dirt groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320842975.XU CN203615357U (en) | 2013-12-19 | 2013-12-19 | Lever type sealing device of air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320842975.XU CN203615357U (en) | 2013-12-19 | 2013-12-19 | Lever type sealing device of air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203615357U true CN203615357U (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320842975.XU Expired - Lifetime CN203615357U (en) | 2013-12-19 | 2013-12-19 | Lever type sealing device of air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203615357U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371691A (en) * | 2015-12-07 | 2016-03-02 | 刘勤 | Elastic sealing device arranged at hot end of air pre-heater |
| CN105444609A (en) * | 2015-12-07 | 2016-03-30 | 刘勤 | Joint type elastic sealing device arranged at cold end of air preheater |
| CN105889520A (en) * | 2016-05-21 | 2016-08-24 | 吴天顺 | Vertical plate gravity sealer used for air pre-heater of thermal power station |
-
2013
- 2013-12-19 CN CN201320842975.XU patent/CN203615357U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371691A (en) * | 2015-12-07 | 2016-03-02 | 刘勤 | Elastic sealing device arranged at hot end of air pre-heater |
| CN105444609A (en) * | 2015-12-07 | 2016-03-30 | 刘勤 | Joint type elastic sealing device arranged at cold end of air preheater |
| CN105889520A (en) * | 2016-05-21 | 2016-08-24 | 吴天顺 | Vertical plate gravity sealer used for air pre-heater of thermal power station |
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| C14 | Grant of patent or utility model | ||
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