CN103016740B - Shaft-end seal device of air preheater - Google Patents
Shaft-end seal device of air preheater Download PDFInfo
- Publication number
- CN103016740B CN103016740B CN201210532926.6A CN201210532926A CN103016740B CN 103016740 B CN103016740 B CN 103016740B CN 201210532926 A CN201210532926 A CN 201210532926A CN 103016740 B CN103016740 B CN 103016740B
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- China
- Prior art keywords
- wall
- shaft
- air preheater
- annulus
- semicircular rings
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 abstract description 14
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
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- Air Supply (AREA)
- Compressor (AREA)
Abstract
The invention discloses a shaft-end seal device of an air preheater, which comprises a sealed chamber arranged on a shaft outer wall and comprises a left and right sealing members with H-shaped sections, wherein the left and right sealing members comprise upper semicircular rings, lower semicircular rings and semicircular cylinders arranged between the upper semicircular rings and the lower semicircular rings, a seal cavity is formed between the left and right sealing members and the shaft outer wall, cold air inlets and hot air inlets which are communicated with the sealing cavity are respectively arranged in symmetrical positions of the semicircular cylinders of the left and right sealing members, an end cover is sleeved on the shaft outer wall of the upper end of the sealed chamber, and an elastic sealing member and a pressure ring are sequentially sleeved on the shaft outer wall of the lower end of the sealed chamber. The shaft-end seal device also comprises a lead screw, wherein the lead screw penetrates through the upper semicircular rings, the lower semicircular rings and the pressure ring, the upper end of the lead screw is fixed on the end cover, and locking nuts are respectively screwed on the lead screw and positioned below the upper semicircular rings and the lower semicircular rings. The shaft-end seal device has the advantages of being reasonable in structure, being capable of effectively eliminating ash and air leakage of the shaft end of the air preheater, optimizing a production field environment, increasing the working efficiency of the air preheater, reducing the energy consumption and prolonging the service life.
Description
technical field:
The present invention relates to shaft sealing technical field, particularly relate to a kind of shaft end seal device of air preheater.
background technique:
Rotary regenerative air preheater is the important thermal energy exchange equipment of thermal power generation unit, and traditional air preheater shaft end seal is mainly adopted in two ways: one is alumiseal device; Another kind of is material filling type sealing.
Alumiseal device is two blocks of semicircular aluminium sheets, and the circular hole suitable with air preheater bearing outside diameter is processed at center, is fixed on axle head by pressing plate by two blocks of semicircle aluminium sheets, clamping macro-axis, make aluminium sheet and large between centers very close to each other thus reach sealing effect.Due to the rotation of macro-axis in actual use, aluminium sheet and large between centers produce and wear and tear, and gap is increasing, cause leaking ash, leaking out.
Material filling type sealing is pressed in the space between main shaft and bearing case mainly through graphite packing, to reach sealing effect, but because this kind of material does not have elasticity, macro-axis surface can be made to produce with the friction of large between centers to wear and tear, thus produce gap, not only damage macro-axis, and leak ash, leak out, pollute site environment, add amount of maintenance and energy consumption, reduce service life of equipment.
To sum up state, this two classes sealing means all can not realize the good sealing effect of air preheater middle (center) bearing, mainly the axle of air preheater is through bearing, the ambient temperature at its end cap position, at about 350 DEG C, directly seals axle head, does not still have the elastic sealed body of ability 350 DEG C of high temperature at present, even if load onto by force, elastic sealed body aging rate is quite fast, and working life is short, and repair and replacement are very frequent.
summary of the invention:
In order to make up prior art problem, the object of this invention is to provide a kind of shaft end seal device of air preheater, effectively eliminating the phenomenon that air preheater axle head leaks ash, leaks out, optimize production on-site environment, improve the working efficiency of air preheater, reduce energy consumption, increase the service life.
Technological scheme of the present invention is as follows:
The shaft end seal device of air preheater, it is characterized in that: comprise the closed chamber be installed on axle outer wall, closed chamber is a left side for work shape by cross section, right seal assembling is formed, left, right seal includes first annulus, second annulus and be connected to first annulus, semicircular cylinder between second annulus is formed, left, Seal cage is formed between right seal and axle outer wall, left, the semicircular cylinder symmetrical position of right seal has the cold wind inlet hole that is communicated with Seal cage and hot blast portals, the axle outer wall of described closed chamber upper end is set with end cap, the axle outer wall of closed chamber lower end is set with elastic sealed body successively, pressure ring, also include screw rod, screw rod runs through the upper semi-ring of closed chamber, lower semi-ring and pressure ring, screw rod upper end is fixed on end cap, below screw rod being positioned at described lower semi-ring and pressure ring is combined with locking nut respectively.
The shaft end seal device of described air preheater, is characterized in that: described elastic sealed body inner ring is conical ring elasticity lip, and conical ring elasticity lip is engaged with axle outer wall.
Advantage of the present invention is:
The present invention is rational in infrastructure, easy to prepare, effectively can eliminate the phenomenon that air preheater axle head leaks ash, leaks out, and optimizes production on-site environment, improves the working efficiency of air preheater, reduces energy consumption, increases the service life.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention.
embodiment:
See Fig. 1:
The shaft end seal device of air preheater, comprise the closed chamber be installed on axle outer wall, closed chamber is a left side for work shape by cross section, right seal 1, 2 assemblings are formed, left, right seal 1, 2 include first annulus 1-1, second annulus 1-2 and be connected to first annulus 1-1, semicircular cylinder 1-3 between second annulus 1-2 is formed, left, right seal 1, Seal cage 3 is formed between 2 and axle outer wall, left, right seal 1, the symmetrical position of semicircular cylinder 1-3 of 2 has the cold wind inlet hole 4 that is communicated with Seal cage and hot blast portals 5, the axle outer wall of closed chamber upper end is set with end cap 6, the axle outer wall of closed chamber lower end is set with elastic sealed body 7 successively, pressure ring 8, also include screw rod 9, screw rod 9 runs through the upper semi-ring 1-1 of closed chamber, lower semi-ring 1-2 and pressure ring 8, screw rod 9 upper end is fixed on end cap 6, below screw rod 9 being positioned at second ring 1-2 and pressure ring 8 is combined with locking nut 10 respectively.
Elastic sealed body 7 inner ring is conical ring elasticity lip 7-1, and conical ring elasticity lip 7-1 is engaged with axle outer wall.
The present invention in use, utilizes locking nut 10 to compress between closed chamber and end cap 6, First air (cold wind) is introduced the cold wind inlet hole 4 of side, circulating air flow is formed in Seal cage 3, due to conduction of heat, can reduce the temperature of axle outer wall, then hot blast portals 5 from hot blast and draws; So just can install elastic sealed body 7 on the downside of closed chamber, the installation position of elastic sealed body 7 lowers the temperature through closed chamber section, ensure that the working life of elastic sealed body 7.
Cold wind blast is greater than air preheater hot blast blast, and namely cold wind inlet hole 4 blast is greater than hot blast and portals 5 end blast, and cold wind inlet hole 4 is connected to the import of air preheater cold wind, and hot blast portals and 5 to connect with pipeline and press on air preheater hot blast position.
Good sealing effect of the present invention, can eliminate the phenomenon that air preheater axle head leaks ash, leaks out effectively, optimizes production on-site environment.
Claims (2)
1. the shaft end seal device of an air preheater, it is characterized in that: comprise the closed chamber be installed on axle outer wall, closed chamber is a left side for work shape by cross section, right seal assembling is formed, left, right seal includes first annulus, second annulus and be connected to first annulus, semicircular cylinder between second annulus is formed, left, Seal cage is formed between right seal and axle outer wall, left, the semicircular cylinder symmetrical position of right seal has the cold wind inlet hole that is communicated with Seal cage and hot blast portals, the axle outer wall of described closed chamber upper end is set with end cap, the axle outer wall of closed chamber lower end is set with elastic sealed body successively, pressure ring, also include screw rod, screw rod runs through first annulus of closed chamber, second annulus and pressure ring, screw rod upper end is fixed on end cap, below screw rod being positioned at second described annulus and pressure ring is combined with locking nut respectively.
2. the shaft end seal device of air preheater according to claim 1, is characterized in that: described elastic sealed body inner ring is conical ring elasticity lip, and conical ring elasticity lip is engaged with axle outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532926.6A CN103016740B (en) | 2012-12-11 | 2012-12-11 | Shaft-end seal device of air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532926.6A CN103016740B (en) | 2012-12-11 | 2012-12-11 | Shaft-end seal device of air preheater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103016740A CN103016740A (en) | 2013-04-03 |
| CN103016740B true CN103016740B (en) | 2015-03-25 |
Family
ID=47965671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210532926.6A Active CN103016740B (en) | 2012-12-11 | 2012-12-11 | Shaft-end seal device of air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103016740B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727236B (en) * | 2013-12-19 | 2016-08-17 | 马鞍山市荣亿密封材料有限责任公司 | A kind of self-lubricating sealing ring |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040475A (en) * | 1976-07-12 | 1977-08-09 | The Air Preheater Company, Inc. | Axially movable sector plate support for rotary regenerative heat exchanger |
| US4372371A (en) * | 1981-10-13 | 1983-02-08 | The Air Preheater Company, Inc. | Trunnion air seal |
| US6241252B1 (en) * | 1999-06-11 | 2001-06-05 | Jemco Seal Corporation | Labyrinth seal and method of making same |
| CN2648191Y (en) * | 2003-09-18 | 2004-10-13 | 王松青 | Hot End Center Sealing Device of Rotary Air Preheater |
| CN201037539Y (en) * | 2007-04-04 | 2008-03-19 | 李英 | Rotary air preheater end axle sealing device |
| CN201866399U (en) * | 2010-04-15 | 2011-06-15 | 马鞍山市荣亿密封材料有限责任公司 | Shaft seal device for high-temperature hot air door |
| CN203009835U (en) * | 2012-12-11 | 2013-06-19 | 马鞍山市荣亿密封材料有限责任公司 | Shaft-end sealing device of air pre-heater |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52149548A (en) * | 1976-06-09 | 1977-12-12 | Mitsubishi Heavy Ind Ltd | Shaft sealing device |
-
2012
- 2012-12-11 CN CN201210532926.6A patent/CN103016740B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040475A (en) * | 1976-07-12 | 1977-08-09 | The Air Preheater Company, Inc. | Axially movable sector plate support for rotary regenerative heat exchanger |
| US4372371A (en) * | 1981-10-13 | 1983-02-08 | The Air Preheater Company, Inc. | Trunnion air seal |
| US6241252B1 (en) * | 1999-06-11 | 2001-06-05 | Jemco Seal Corporation | Labyrinth seal and method of making same |
| CN2648191Y (en) * | 2003-09-18 | 2004-10-13 | 王松青 | Hot End Center Sealing Device of Rotary Air Preheater |
| CN201037539Y (en) * | 2007-04-04 | 2008-03-19 | 李英 | Rotary air preheater end axle sealing device |
| CN201866399U (en) * | 2010-04-15 | 2011-06-15 | 马鞍山市荣亿密封材料有限责任公司 | Shaft seal device for high-temperature hot air door |
| CN203009835U (en) * | 2012-12-11 | 2013-06-19 | 马鞍山市荣亿密封材料有限责任公司 | Shaft-end sealing device of air pre-heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103016740A (en) | 2013-04-03 |
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