CN2648191Y - Hot End Center Sealing Device of Rotary Air Preheater - Google Patents
Hot End Center Sealing Device of Rotary Air Preheater Download PDFInfo
- Publication number
- CN2648191Y CN2648191Y CNU032794231U CN03279423U CN2648191Y CN 2648191 Y CN2648191 Y CN 2648191Y CN U032794231 U CNU032794231 U CN U032794231U CN 03279423 U CN03279423 U CN 03279423U CN 2648191 Y CN2648191 Y CN 2648191Y
- Authority
- CN
- China
- Prior art keywords
- sealing
- air preheater
- sealing seat
- rotary regenerative
- regenerative air
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 85
- 239000000945 filler Substances 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 230000001172 regenerating effect Effects 0.000 claims description 27
- 238000012856 packing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000002075 main ingredient Substances 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
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
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- Air Supply (AREA)
Abstract
The utility model discloses a rotary air heater's hot junction center sealing device. The joint of the rotary shaft of the rotary air preheater and the rotary air preheater is not easy to produce leak, heat is not easy to lose, heat loss is small, output of a unit is guaranteed, the rotary air preheater comprises a sealing seat sleeved on the rotary shaft, sealing filler and a cover plate are sequentially installed on the upper portion of the sealing seat, and the sealing seat and the cover plate are connected through screws, and the rotary air preheater is characterized in that: the rotary shaft is sleeved with a lower sealing seat below the sealing seat, the lower sealing seat and the sealing seat are connected through screws to form an annular cavity, and a sealing plate and an expandable soft filler are sequentially arranged in the annular cavity from bottom to top. The sealing plate has 3, wherein the outer peripheral surface of the middle sealing plate is matched with the inner peripheral surface of the lower sealing seat, and the inner peripheral surfaces of the other upper and lower sealing plates are matched with the peripheral surface of the rotating shaft.
Description
(1) technical field
The utility model relates to the accessory of the air preheater that uses in the thermal power generation unit, is specially the hot junction central seal device of rotary regenerative air preheater.
(2) background technique
Rotary regenerative air preheater is the subsidiary engine equipment of thermoelectric generator, the rotor that it comprises shell and is set in rotating shaft, its major function is exactly to make the air and the interior flue gas of discharging of burner hearth that enter burner hearth carry out heat exchange, hot junction central seal device is exactly the top that is installed on air preheater, prevents that air preheater inside from carrying out the air of heat exchange and flue gas and scurrying out between the rotor of air preheater and rotating shaft.The hot junction central seal device of existing rotary regenerative air preheater comprises sealing seat, and stuffing box packing and cover plate that material is the oil immersion asbestos are installed above the sealing seat successively, is connected with screw between cover plate and the sealing seat.This seal arrangement is to combine closely between the rotating shaft by stuffing box packing and rotary regenerative air preheater to seal, its shortcoming is exactly that the long-time running of sealing device is aging nonelastic easily at high temperature condition lower seal filler, the junction of the rotating shaft of itself and rotary regenerative air preheater produces crack, carrying out the air and the flue gas of heat exchange scurries out from this crack, near this crack temperature reaches more than 400 ℃, because unit is in continuous operation, thereby can't overhaul, heat loss is big, the firepower of burner hearth is affected, and then has influence on exerting oneself of whole unit.
(3) summary of the invention
Hot junction central seal device at existing rotary regenerative air preheater, its stuffing box packing is easily aging, nonelastic, the junction of the rotating shaft of itself and rotary regenerative air preheater easily produces crack, heat loss is big, the affected shortcoming of exerting oneself of unit, the utility model provides the hot junction central seal device of another rotary regenerative air preheater, and its heat loss is little, can guarantee exerting oneself of unit.
The technical solution of the utility model is such: it comprises the sealing seat that is set in the rotary regenerative air preheater rotating shaft, the top of described sealing seat is equipped with stuffing box packing and cover plate successively, be connected with screw between sealing seat and the cover plate, it is characterized in that: below described sealing seat, the shaft set of described rotary regenerative air preheater has bottom sealing socket, connect and compose annular cavity with screw between described bottom sealing socket and the sealing seat, sealing plate and expansion soft-filler are installed in the described annular cavity from bottom to top successively.
It is further characterized in that described sealing plate has 3; Described 3 sealing plates, wherein in the middle of plate outer circumferential face sealing together cooperate with the inner peripheral surface of bottom sealing socket, two sealing plates up and down in addition inner peripheral surface cooperate with the side face of described rotary regenerative air preheater rotating shaft; Its material Main Ingredients and Appearance of described expansion soft-filler is an alumina silicate.
The utility model is installed on the rotary regenerative air preheater, 3 blocks of metallic seal plates are alternate type to closely cooperate with rotating shaft rotary regenerative air preheater and bottom sealing socket, sealing channel is the passage that rotary type rises, the air and the flue gas that carry out heat exchange are difficult for scurrying out from sealing channel, and the expansion soft-filler expands under high temperature condition and the rotating shaft and the sealing between the sealing seat of rotary regenerative air preheater are better, the junction of the rotating shaft of itself and rotary regenerative air preheater is difficult for producing crack, heat is difficult for running off, heat loss is little, stuffing box packing above the sealing seat further guarantees to carry out the air of heat exchange and flue gas and can not scurry out between the rotating shaft of rotary regenerative air preheater and seal arrangement, thereby further reduced heat loss, guarantee exerting oneself of unit, realized the purpose of this utility model effectively.
(4) description of drawings
Fig. 1 is the sectional view of plan view of the present utility model.
(5) embodiment
See Fig. 1, the utility model comprises the sealing seat 1 that is set in rotating shaft 6, the top of described sealing seat 1 is equipped with stuffing box packing 5 and cover plate 3 successively, be connected with screw 4,7 respectively between sealing seat 1 and the cover plate 3, below described sealing seat 1, described rotating shaft 6 is set with bottom sealing socket 10, connects and composes annular housing with screw 2,9 between described bottom sealing socket 10 and the sealing seat 1, and sealing plate 13,12,11 and expansion soft-filler 8 are installed in the described annular housing from bottom to top successively.The outer circumferential face of sealing plate 12 cooperates with the inner peripheral surface of bottom sealing socket 10, and the inner peripheral surface of sealing plate 13,11 cooperates with the side face of rotating shaft 6 respectively.Earlier sealing seat 10 is set in during installation.In the rotating shaft 6, sealing seat 10 is welded to connect with the body 14 of rotary regenerative air preheater, and the expansion soft-filler 8 that sealing plate 13,12,11 and material are mainly alumina silicate is installed on sealing seat 10, in the rotating shaft 6 successively.On the top of expansion soft-filler 8 sealing seat 1 is installed again, be fastenedly connected with screw 2,9 between sealing seat 1 and the sealing seat 10, connection part can not have spacing between sealing seat 1 and the sealing seat 10, guarantee that sealing is reliable, stuffing box packing 5 and the cover plate 3 that material is the oil immersion asbestos installed on the top of sealing seat 1 successively, is connected with screw 4,7 between sealing seat 1 and the cover plate 3; And then at the top of rotating shaft 6 bearing set, the periphery of the lower surface of bearing is installed on the body of rotary regenerative air preheater, and (not drawing among Fig. 1) guarantees the rotating shaft stability of rotation of rotary regenerative air preheater like this.Certainly bottom sealing socket 10, sealing plate 13,12,11, sealing seat 1 and cover plate 3 also can adopt Hough to be connected with rotating shaft 6, bottom sealing socket 10, sealing plate 13,12,11, sealing seat 1 and cover plate 3 are slit into two parts of symmetry respectively along its symmetry axis, with the rotating shaft 6 of filling the span of a man's arms of each two parts symmetrical, the two ends of two parts symmetrical are welded to connect respectively. Sealing plate 13,12,11 is installed earlier in the installation process, and then at its outside bottom sealing socket 10 of installing, bottom sealing socket 10 is welded to connect with the body 14 of rotary regenerative air preheater, sealing plate 13,12,11 is pushed into the bottom of bottom sealing socket 10, and then corresponding parts are installed successively, order is the same.
Claims (4)
1, the hot junction central seal device of rotary regenerative air preheater, it comprises the sealing seat that is set in the rotary regenerative air preheater rotating shaft, the top of described sealing seat is equipped with stuffing box packing and cover plate successively, be connected with screw between sealing seat and the cover plate, it is characterized in that: below described sealing seat, described rotary regenerative air preheater shaft set has bottom sealing socket, connect and compose annular housing with screw between described bottom sealing socket and the sealing seat, sealing plate and expansion soft-filler are installed in the described annular housing from bottom to top successively.
2,, it is characterized in that described sealing plate has 3 according to the hot junction central seal device of the described rotary regenerative air preheater of claim 1.
3, according to the hot junction central seal device of the described rotary regenerative air preheater of claim 2, it is characterized in that described 3 sealing plates, wherein in the middle of plate outer circumferential face sealing together cooperate with the inner peripheral surface of bottom sealing socket, two sealing plates up and down in addition inner peripheral surface cooperate with the side face of described rotating shaft.
4,, it is characterized in that its material Main Ingredients and Appearance of described expansion soft-filler is an alumina silicate according to the hot junction central seal device of the described rotary regenerative air preheater of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032794231U CN2648191Y (en) | 2003-09-18 | 2003-09-18 | Hot End Center Sealing Device of Rotary Air Preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032794231U CN2648191Y (en) | 2003-09-18 | 2003-09-18 | Hot End Center Sealing Device of Rotary Air Preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2648191Y true CN2648191Y (en) | 2004-10-13 |
Family
ID=34332303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032794231U Expired - Fee Related CN2648191Y (en) | 2003-09-18 | 2003-09-18 | Hot End Center Sealing Device of Rotary Air Preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2648191Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825288A (en) * | 2010-04-27 | 2010-09-08 | 西安交通大学 | Sealing device for boiler rotary heater |
| CN102777925A (en) * | 2012-07-12 | 2012-11-14 | 西安交通大学 | Sealing device of steam admission side of rotary boiler fan heater in steam admission by single pipe |
| CN102788137A (en) * | 2012-08-07 | 2012-11-21 | 中国科学院长春光学精密机械与物理研究所 | Attemperator for labyrinth rotating part |
| CN103016740A (en) * | 2012-12-11 | 2013-04-03 | 马鞍山市荣亿密封材料有限责任公司 | Shaft-end seal device of air preheater |
| CN106287790A (en) * | 2016-08-31 | 2017-01-04 | 戴春喜 | Rotary regenerative air preheater and sealing structure thereof |
-
2003
- 2003-09-18 CN CNU032794231U patent/CN2648191Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825288A (en) * | 2010-04-27 | 2010-09-08 | 西安交通大学 | Sealing device for boiler rotary heater |
| CN102777925A (en) * | 2012-07-12 | 2012-11-14 | 西安交通大学 | Sealing device of steam admission side of rotary boiler fan heater in steam admission by single pipe |
| CN102777925B (en) * | 2012-07-12 | 2014-11-05 | 西安交通大学 | Sealing device of steam admission side of rotary boiler fan heater in steam admission by single pipe |
| CN102788137A (en) * | 2012-08-07 | 2012-11-21 | 中国科学院长春光学精密机械与物理研究所 | Attemperator for labyrinth rotating part |
| CN102788137B (en) * | 2012-08-07 | 2014-12-24 | 中国科学院长春光学精密机械与物理研究所 | Attemperator for labyrinth rotating part |
| CN103016740A (en) * | 2012-12-11 | 2013-04-03 | 马鞍山市荣亿密封材料有限责任公司 | Shaft-end seal device of air preheater |
| CN103016740B (en) * | 2012-12-11 | 2015-03-25 | 马鞍山市荣亿密封材料有限责任公司 | Shaft-end seal device of air preheater |
| CN106287790A (en) * | 2016-08-31 | 2017-01-04 | 戴春喜 | Rotary regenerative air preheater and sealing structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |