CN102588999B - Radial wear-resistant sealing device of air preheater - Google Patents
Radial wear-resistant sealing device of air preheater Download PDFInfo
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- CN102588999B CN102588999B CN201210037926.9A CN201210037926A CN102588999B CN 102588999 B CN102588999 B CN 102588999B CN 201210037926 A CN201210037926 A CN 201210037926A CN 102588999 B CN102588999 B CN 102588999B
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- resistant sealing
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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
Abstract
The invention discloses a radial wear-resistant sealing device of an air preheater, comprising an inclined wear-resistant sealing plate, a luffing movable plate, a fixed plate, a compression spring and an elastic adjusting device, wherein the inclined wear-resistant sealing plate is fixedly arranged on the luffing movable plate, the inner side edge of the luffing movable plate is mounted on the top edge of the fixed plate through a circular shaft, and the compression spring and the elastic adjusting device are respectively arranged at the two ends of the luffing movable plate; the slope of the wear-resistant sealing plate is embedded with a wear-resistant ceramic plate with a large area so as to ensure that the wear-resistant ceramic plate is in contact with a sector plate in the whole rotation process. The radial wear-resistant sealing device provided by the invention has the advantages of being good in sealing effect, good in wear resistance, long in service life, convenient in field installation, short in construction period, suitable for modular production and the like. Moreover, the radial wear-resistant sealing device is suitable for radial sealing of a rotary air preheater of a large-sized boiler.
Description
Technical field
The present invention relates to the apex combustion seal of a kind of sealing device, particularly air preheater, belong to rotary regenerative air preheater field.
Background technology
Rotary regenerative air preheater, as the heat-exchange apparatus of large-sized boiler, is widely used on station boiler, and it is that the flue gas heat of utilizing boiler to discharge comes preheating to enter the required air of boiler participation burning, thereby improves the efficiency of boiler.The air leak rate of air curtain of air preheater is the important indicator that affects boiler efficiency, air leak rate of air curtain is high, by reduction give, the exerting oneself of air-introduced machine, power consumption strengthens, and has also reduced heat exchanger effectiveness, thereby has affected boiler efficiency simultaneously, therefore effectively control the air leak rate of air curtain of air preheater, can reduce power consumption, improve boiler efficiency, reach energy-conservation good result.Air preheater is normally in hot lower operation, and each parts can deform because being heated, and rotor can become mushroom cloud-like, and gap changes, and most of gap can diminish.If it is large that the gap between rotor and stator becomes, may cause air leak rate of air preheater to increase, if gap smaller may cause air preheater stuck.So the Sealing Technology of air preheater is particularly important, only have the rational Sealing Technology of employing, could effectively control the air leak rate of air curtain of air preheater, improve boiler efficiency, reduce energy consumption.The apex combustion seal of existing air preheater, generally adopts rigid seal, obviously exists the rate of wear fast, the critical defect that poor sealing performance and service life are short.
Summary of the invention
The object of the invention is, in order to overcome the weak point of above-mentioned existing apex combustion seal, to design a kind of good seal performance, anti-wear performance is good, the radial wear-resistant sealing device of air preheater of long service life.
Radial wear-resistant sealing device of air preheater of the present invention, comprise the wear-resistant sealing plate of inclined type, pitching type portable plate, fixed head, Compress Spring and flexible adjustment device, the wear-resistant sealing plate of described inclined type is packed on pitching type portable plate, the inner side edge of pitching type portable plate is arranged on the top margin of fixed head through circular shaft, Compress Spring and flexible adjustment device are equipped with respectively in the two that it is characterized in that pitching type portable plate, one end of described Compress Spring is arranged on the lateral surface of pitching type portable plate, the other end of Compress Spring is arranged on fixed head through spring support, described flexible adjustment device comprises rotatable parts, adjusting rod, supporting seat and adjusting nut, wherein, on near the lateral surface of the pitching type portable plate of one end of adjusting rod rotatable parts are arranged on Compress Spring, the other end of adjusting rod is provided with screw thread and is connected with adjusting nut through the slot on supporting seat, supporting seat is packed on the fixed head with adjusting rod correspondence position.
In order to ensure pitching type portable plate, not being conditioned bar tires out and freedom of movement, the rotatable parts of above-mentioned flexible adjustment device comprise П type holder, turning set and bearing pin, the dual-side of described П type holder is respectively equipped with pin shaft hole, П type holder is arranged on the lateral surface of pitching type portable plate, the bearing pin of turning set through being inserted on pin shaft hole is arranged on П type holder, and adjusting rod is welded on turning set.
Can play the effect of wear-resistant buffering when any position contacts with fanning strip on inclined-plane, on the inclined-plane of the wear-resistant sealing plate of described inclined type, be installed with wear resistant ceramic chip.
Radial wear-resistant sealing device of air preheater of the present invention, during installation, by the inclined plane of wear-resistant sealing plate corresponding to rotation direction, with bolt, fixed head is arranged on the rotor of air preheater, by adjusting nut, is the length of adjustable adjusting rod and then regulates Compress Spring initial compression location status.When wear-resistant sealing plate starts to contact with fanning strip, its contact-making surface is an inclined-plane, because studding with wear resistant ceramic chip on inclined-plane, can guarantee all to have when any position on inclined-plane contacts with fanning strip the effect of wear-resistant buffering, after contact, its contact point slides into the top of wear resistant ceramic chip along inclined-plane; Spring in this process is progressively compressed, and adjusting rod now moves in the slot of supporting seat and not affect pitching type portable plate freely movable.Sliding in the top that studs with the wear-resistant sealing plate of wear resistant ceramic chip on fanning strip, makes the very little gap of script between wear-resistant sealing plate and fanning strip, can reach gapless very soon, thereby reach sealing effectiveness through break-in.When wear-resistant sealing device and fanning strip disengagement, spring returns to initial compressed state, and when again contacting with fanning strip, spring is compressed again.So move in circles, realize the radial seal of air preheater.Its advantage is mainly: on the inclined-plane of (1) wear-resistant sealing plate, be installed with wear resistant ceramic chip, area is large, can guarantee can make wear resistant ceramic chip to contact with fanning strip in whole rotation process, has good sealing effect, anti-wear performance is good, the advantages such as long service life.Under the long-term hot situation of air preheater, operation causes rotor thermal deformation, and sealing device carries out auto-compensation by the strain of spring to the distortion of rotor, reaches sealing effectiveness, can move for a long time.(2) this device can carry out modularization production, and perfect technology is on-the-spot easy for installation, short construction period.(3) this device can reduce the air leak rate of air curtain of air preheater, thereby improves boiler efficiency, reduces energy consumption.The rotary regenerative air preheater of applicable large-sized boiler is done radial seal and is used.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is a kind of mounting structure schematic diagram of the Compress Spring in Fig. 1;
Fig. 3 is a kind of structural representation of the flexible adjustment device in Fig. 1.
The specific embodiment
Accompanying drawing is nonrestrictive discloses the concrete structure schematic diagram in embodiments of the invention, is further described by reference to the accompanying drawings as follows:
Referring to accompanying drawing 1～3,1 in figure is wear resistant ceramic chip, the 2nd, and the wear-resistant sealing plate of inclined type, the 3rd, pitching type portable plate, the 4th, circular shaft, the 5th, fixed head, the 6th, spring support, the 7th, Compress Spring, 8 and 9 is spring locating pieces, the 10th, nut, the 11st, П type holder, the 12nd, turning set, the 13rd, bearing pin, the 14th, adjusting rod, the 15th, supporting seat, the 16th, adjusting nut, the 21st, the fanning strip of air preheater stator, the 22nd, air preheater rotor.
Radial wear-resistant sealing device of air preheater of the present invention, its structure as shown in Figure 1, mainly by the wear-resistant sealing plate 2 of inclined type, pitching type portable plate 3, fixed head 5, Compress Spring 7 and flexible adjustment installation composition, the wear-resistant sealing plate 2 of described inclined type is packed on pitching type portable plate 3, the inner side edge of pitching type portable plate 3 is arranged on the top margin of fixed head 5 through circular shaft 4, Compress Spring 7 and flexible adjustment device are equipped with respectively in two of above-mentioned pitching type portable plate 3, shown in Fig. 1 is the structural representation of a part for pitching type portable plate 3, one end of described Compress Spring 7 is arranged on the lateral surface of pitching type portable plate 3 through spring locating piece 9, the other end of Compress Spring 7 is arranged on fixed head 5 through spring locating piece 8 and spring support 6, its structure as shown in Figure 2.Described flexible adjustment device comprises rotatable parts, adjusting rod 14, supporting seat 15 and adjusting nut 16, wherein, on near the lateral surface of the pitching type portable plate 3 of one end of adjusting rod 14 rotatable parts are arranged on Compress Spring, the other end of adjusting rod 14 is provided with screw thread and is connected with adjusting nut 16 through the slot on supporting seat 15, supporting seat 15 is packed on the fixed head 5 with adjusting rod correspondence position, and its structure as shown in Figure 3.
In order to ensure pitching type portable plate, not being conditioned bar tires out and freedom of movement, the rotatable parts of above-mentioned flexible adjustment device comprise П type holder 11, turning set 12 and bearing pin 13, the dual-side of described П type holder 11 is respectively equipped with pin shaft hole, П type holder 11 is arranged on the lateral surface of pitching type portable plate 3, the bearing pin 13 of turning set 12 through being inserted on pin shaft hole is arranged on П type holder 11, adjusting rod 14 is welded on turning set 12, nut 10 is arranged on the screw rod of bearing pin 13 front ends, and its structure as shown in Figure 1.
Can play the effect of wear-resistant buffering when any position contacts with fanning strip on inclined-plane, on the inclined-plane of the wear-resistant sealing plate 2 of described inclined type, be installed with wear resistant ceramic chip 1.
During installation, by the inclined plane of wear-resistant sealing plate corresponding to rotation direction, with bolt, fixed head 5 is arranged on the rotor 22 of air preheater, by adjusting nut 16, be the length of adjustable adjusting rod 14 and then regulate Compress Spring 7 initial compressed state, when wear-resistant sealing plate starts to contact with the fanning strip 21 of air preheater stator, its contact-making surface is an inclined-plane, on inclined-plane, stud with wear resistant ceramic chip 1 and guarantee that on inclined-plane, any position contacts the effect that can play wear-resistant buffering with fanning strip, strain by Compress Spring 7 can be carried out auto-compensation to the gap between wear resistant ceramic chip 1 and fanning strip 21, reach sealing effectiveness.
Claims (3)
1. a radial wear-resistant sealing device of air preheater, comprise the wear-resistant sealing plate of inclined type, pitching type portable plate, fixed head, Compress Spring and flexible adjustment device, the wear-resistant sealing plate of described inclined type is packed on pitching type portable plate, the inner side edge of pitching type portable plate is arranged on the top margin of fixed head through circular shaft, Compress Spring and flexible adjustment device are equipped with respectively in the two that it is characterized in that pitching type portable plate, one end of described Compress Spring is arranged on the lateral surface of pitching type portable plate, the other end of Compress Spring is arranged on fixed head through spring support, described flexible adjustment device comprises rotatable parts, adjusting rod, supporting seat and adjusting nut, wherein, on near the lateral surface of the pitching type portable plate of one end of adjusting rod rotatable parts are arranged on Compress Spring, the other end of adjusting rod is provided with screw thread and is connected with adjusting nut through the slot on supporting seat, supporting seat is packed on the fixed head with adjusting rod correspondence position.
2. radial wear-resistant sealing device of air preheater as claimed in claim 1, the rotatable parts that it is characterized in that described flexible adjustment device comprise П type holder, turning set and bearing pin, the dual-side of described П type holder is respectively equipped with pin shaft hole, П type holder is arranged on the lateral surface of pitching type portable plate, the bearing pin of turning set through being inserted on pin shaft hole is arranged on П type holder, and adjusting rod is welded on turning set.
3. radial wear-resistant sealing device of air preheater as claimed in claim 1 or 2, is characterized in that being installed with wear resistant ceramic chip on the inclined-plane of the wear-resistant sealing plate of described inclined type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210037926.9A CN102588999B (en) | 2012-02-20 | 2012-02-20 | Radial wear-resistant sealing device of air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210037926.9A CN102588999B (en) | 2012-02-20 | 2012-02-20 | Radial wear-resistant sealing device of air preheater |
Publications (2)
| Publication Number | Publication Date |
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| CN102588999A CN102588999A (en) | 2012-07-18 |
| CN102588999B true CN102588999B (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210037926.9A Active CN102588999B (en) | 2012-02-20 | 2012-02-20 | Radial wear-resistant sealing device of air preheater |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954221A (en) * | 2012-11-07 | 2013-03-06 | 宁夏新能达电力技术有限公司 | Joint interchange sealing device |
| CN105371691A (en) * | 2015-12-07 | 2016-03-02 | 刘勤 | Elastic sealing device arranged at hot end of air pre-heater |
| CN105570462B (en) * | 2016-02-19 | 2018-06-15 | 江苏拓平密封科技有限公司 | Rotary regenerative air heater elastic contact type sealing device |
| CN114851322B (en) * | 2022-05-18 | 2023-03-21 | 西南林业大学 | Hot pressing method for continuous flat-pressing thick artificial board |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0735333A (en) * | 1993-06-25 | 1995-02-07 | Ishikawajima Harima Heavy Ind Co Ltd | Collar seal device for rotary air preheater |
| CN2275678Y (en) * | 1996-09-23 | 1998-03-04 | 吴唯质 | Rotary air preheater with movable sealing scraper |
| CN201575471U (en) * | 2009-12-04 | 2010-09-08 | 宁波市镇海福尔迅电梯部件厂 | Rotary type air preheater elastic slice contact sealing device |
| CN201706524U (en) * | 2010-01-21 | 2011-01-12 | 王胜五 | Sealing device for preventing air preheater from air leakage |
| CN202511316U (en) * | 2012-02-20 | 2012-10-31 | 江苏鑫信润科技有限公司 | Radial antiwear sealing device of air preheater |
-
2012
- 2012-02-20 CN CN201210037926.9A patent/CN102588999B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0735333A (en) * | 1993-06-25 | 1995-02-07 | Ishikawajima Harima Heavy Ind Co Ltd | Collar seal device for rotary air preheater |
| CN2275678Y (en) * | 1996-09-23 | 1998-03-04 | 吴唯质 | Rotary air preheater with movable sealing scraper |
| CN201575471U (en) * | 2009-12-04 | 2010-09-08 | 宁波市镇海福尔迅电梯部件厂 | Rotary type air preheater elastic slice contact sealing device |
| CN201706524U (en) * | 2010-01-21 | 2011-01-12 | 王胜五 | Sealing device for preventing air preheater from air leakage |
| CN202511316U (en) * | 2012-02-20 | 2012-10-31 | 江苏鑫信润科技有限公司 | Radial antiwear sealing device of air preheater |
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| CN102588999A (en) | 2012-07-18 |
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Address after: 223112 Jiangsu Hongze Huaian County Economic Development Zone Science and Technology Pioneer Park 12 Patentee after: Jiangsu Xin Xin Run Polytron Technologies Inc Address before: 211103 No. 102, Tianning Road, Jiangning science and Technology Park, Nanjing, Jiangsu Patentee before: Jiangsu Sunray Technology Co., Ltd. |
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