CN201705932U - Flexible contact sealing device - Google Patents
Flexible contact sealing device Download PDFInfo
- Publication number
- CN201705932U CN201705932U CN201020139213XU CN201020139213U CN201705932U CN 201705932 U CN201705932 U CN 201705932U CN 201020139213X U CN201020139213X U CN 201020139213XU CN 201020139213 U CN201020139213 U CN 201020139213U CN 201705932 U CN201705932 U CN 201705932U
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- folding
- base plate
- sealing device
- flexible contact
- sealing
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Abstract
The utility model provides a flexible contact sealing device, which comprises a sealing element, a folding, a spring and a base plate, wherein the fixed side of the folding is fixed on the base plate, the sealing element is fixed on the movable side of the folding, and the two ends of the spring are respectively arranged on the movable side of the folding and the base plate. The utility model has the advantages that the flexible contact sealing device can not generate sealing gaps, and has good sealing efficiency, no gap is generated between the contact parts of a rotor and a stator, so no air flow passes through the contact parts of the rotor and the stator, the erosive wear problem can be avoided, and the sealing system can operate for a long term; the folding is adopted to limit the spring, the rotor of an air preheater is allowed to be deformed at certain circular end surface and in the circumferential direction when operating under the hot condition, and the utility model is particularly suitable for the reformation of the air preheater; and the utility model can adopt the modularized production process, is assembled into single sealing unit, has fewer requirements on ovality of the rotor of the air preheater, parallelism and planeness of the two end surfaces and the rotating and shifting of the rotor, greatly simplifies the process procedure of the air preheater, and has short construction cycle and good efficiency.
Description
Technical field
The utility model relates to seal arrangement, particularly the seal arrangement of motion structure.
Background technique
Rotary regenerative air preheater is generally adopted on big-and-middle-sized station boiler, and air leak rate of air curtain is one of its important economic indicator.Effective control air-heater leakage rate can be sent from reduction, induced draught fan power consumption and improve two aspects of efficiency of boiler and obtain energy saving profit.Thereby no matter be domestic and international air preheater manufacturer or vast air preheater applying unit, all in the air leak rate of air curtain of making great efforts to reduce aspect different air preheater.
Traditional rotary regenerative air preheater generally all adopts the gapped sealing technique of rigidity, promptly keeps a minimum clearance between the sound structure, reaches the inleakage minimum.Because the mushroom deformation problem of air preheater, and this distortion constantly changes with load and ambient temperature, makes us be difficult to find the gap width between the sound structure an of the best.Therefore the shortcoming of the gapped sealing technique of this rigidity is that air leak rate of air curtain is bigger than normal, and especially after the wearing and tearing of operation a period of time sealing configuration increase, air leak rate of air curtain will significantly raise.And the Economy of leaking out to boiler operatiopn has a significant impact.According to test statistics, join the every reduction by 1% of 300MW unit boiler air-heater leakage rate, can reduce unit coal consumption 0.16g/kWh.
As far back as the eighties in last century, domestic field of boilers expert just once foretold: the final outlet of rotary regenerative air preheater sealing is that sound rationally contacts.
Summary of the invention
The purpose of this utility model is to provide a kind of sound seal arrangement of contact rationally.
The utility model provides a kind of flexible contact type sealing device, it is characterized in that: mainly comprise Sealing, folding, spring and base plate, the quiet page fixing of folding is on base plate, and Sealing is fixed on the moving page or leaf of folding, and both ends of the spring is contained in respectively on the moving page or leaf and base plate of folding.When flexible contact type sealing device did not enter sealing station, rotor and stator did not come in contact, and the spring in the flexible contact type sealing device is in the state that loosens relatively; Rotor motion enters after the sealing station, because contacting of rotor and stator forms tight gapless sealing configuration, the spring in the flexible contact type sealing device is compressed the also corresponding reduction of the total height of whole sealing device at this moment; After leaving sealing station, rotor separates once more with stator, and the spring in the flexible contact type sealing device flicks the state that loosens relatively that returns to, and after it entered sealing station once more, spring was compressed again, and so circulation is carried out.
The flexible contact type sealing device that the utility model provides, its Sealing is a wedge shape, to reach the purpose that flexible contact type sealing device is gradually reduced in rotor and process that stator contacts.
The flexible contact type sealing device that the utility model provides, can there be wear rib on the top of its Sealing.
The flexible contact type sealing device that the utility model provides, its Sealing can be connected by regulator with the moving page or leaf of folding, to regulate the position of Sealing.
The flexible contact type sealing device that the utility model provides, its regulator can be made up of the T type bolt of the moving page or leaf that passes base plate and folding and the spacing adjusting nut below the base plate.
The flexible contact type sealing device that the utility model provides, its spring can be contained on the moving page or leaf and base plate of folding by disconnecting prevention structure spare, and disconnecting prevention structure spare can be bearing pin on moving page of folding and the setting sleeve on the base plate.
The flexible contact type sealing device that the utility model provides, its bearing pin head can globulates, elongate or shorten in the process with spring free and scrape with its card.
The flexible contact type sealing device that the utility model provides, its advantage is: (1) can not form seal clearance, good sealing effect, very close to each other between rotor and the stator contact position, then do not have the air communication mistake, just avoided the problem of erosive wear yet, thus the long-time running of sealing system energy; (2) adopt the folding limit spring, allow the rotor of air preheater that the certain nose circle facial disfigurement and the distortion of circumferencial direction are arranged under hot running state, be particularly suitable for reformation on air preheater; (3) flexible contact type sealing device adopts the modularization production technology, is assembled into single seal element, to ovality, the parallelism of both ends of the surface, the planeness of air preheater rotor; The rotor rotation jerk value requires to reduce, and has simplified field erected process greatly, short construction period, effective.
Description of drawings
Fig. 1 is the structural representation of flexible contact type sealing device.
Embodiment
Flexible contact type sealing device, its structure comprises Sealing 2, folding 4, spring 6 and base plate 9 as shown in Figure 1, and the quiet page or leaf 4.2 of folding is fixed on the base plate 9, and Sealing 2 is fixed on the moving page or leaf 4.1 of folding, and spring 6 two ends are contained in respectively on moving page or leaf 4.1 of folding and the base plate 9; Sealing 2 is wedge shapes; There is wear rib 1 on the top of Sealing 2, promptly is made up of the self-lubrication alloy bar on one section wedge shape iron and top thereof; After rotor motion enters sealing station, point of contact slides into the self-lubrication alloy bar on wedge shape iron top along the inclined-plane of wedge shape iron, the self-lubrication alloy bar participates in the relative movement of the overwhelming majority between rotor and the stator, collsion damage is avoided in the inclined-plane contact, the self-lubrication alloy bar is wear-resistant, high temperature resistant, friction factor is little, rotational resistance can be reduced, the degree of wear can be reduced again; The moving page or leaf of Sealing 2 and folding 4.1 is connected by regulator 5, is made of T type bolt 5.1 that passes moving page 4.1 of base plate 9 and folding and the spacing adjusting nut 5.2 below the base plate, is used for regulating the opening angle of folding 4; Flexible sealing gasket 8 between the moving page or leaf 4.1 of Sealing 2 and folding; Spring 6 is contained on moving page or leaf 4.1 of folding and the base plate 9 by disconnecting prevention structure spare (being bulb bearing pin 3 and the setting sleeve on the base plate 9---the steel pipe 7 on the moving page or leaf 4.1 of folding).
Claims (10)
1. flexible contact type sealing device is characterized in that: mainly comprise Sealing, folding, spring and base plate, the quiet page fixing of folding is on base plate, and Sealing is fixed on the moving page or leaf of folding, and both ends of the spring is contained in respectively on the moving page or leaf and base plate of folding.
2. according to the described flexible contact type sealing device of claim 1, it is characterized in that: described Sealing is a wedge shape.
3. according to the described flexible contact type sealing device of claim 1, it is characterized in that: there is wear rib on the top of described Sealing.
4. according to the described flexible contact type sealing device of claim 2, it is characterized in that: there is wear rib on the top of described Sealing.
5. according to the described flexible contact type sealing device of one of claim 1～4, it is characterized in that: described Sealing is connected by regulator with the moving page or leaf of folding.
6. according to the described flexible contact type sealing device of claim 5, it is characterized in that: described regulator is made up of the T type bolt of the moving page or leaf that passes base plate and folding and the spacing adjusting nut below the base plate.
7. according to the described flexible contact type sealing device of one of claim 1～4, it is characterized in that: described spring is contained on the moving page or leaf and base plate of folding by disconnecting prevention structure spare.
8. according to the described flexible contact type sealing device of claim 5, it is characterized in that: described spring is contained on the moving page or leaf and base plate of folding by disconnecting prevention structure spare.
9. according to the described flexible contact type sealing device of claim 7, it is characterized in that: described disconnecting prevention structure spare is bearing pin on the moving page or leaf of folding and the setting sleeve on the base plate.
10. according to the described flexible contact type sealing device of claim 9, it is characterized in that: described bearing pin head globulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020139213XU CN201705932U (en) | 2010-03-24 | 2010-03-24 | Flexible contact sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020139213XU CN201705932U (en) | 2010-03-24 | 2010-03-24 | Flexible contact sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705932U true CN201705932U (en) | 2011-01-12 |
Family
ID=43443088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020139213XU Expired - Fee Related CN201705932U (en) | 2010-03-24 | 2010-03-24 | Flexible contact sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705932U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410555A (en) * | 2011-10-18 | 2012-04-11 | 江苏透平密封高科技有限公司 | Composite sealing brush for air preheater |
| CN102818280A (en) * | 2011-06-10 | 2012-12-12 | 安徽省科捷再生能源利用有限公司 | Flexible contact type sealing device of air preheater of power station boiler |
| CN102865370A (en) * | 2012-08-24 | 2013-01-09 | 冯振洲 | Sealing device of dynamic and static combination part of rotating equipment |
| CN102901118A (en) * | 2012-10-19 | 2013-01-30 | 南京通用电气装备有限公司 | Flexible sealing structure of rotary air pre-heater |
| CN103175437A (en) * | 2012-11-20 | 2013-06-26 | 孟金来 | Flexible contact-type sealing device |
| CN103899756A (en) * | 2014-04-25 | 2014-07-02 | 中石化第十建设有限公司 | Sealing equipment and construction technology in LNG full containment tank vault air-blowing jacking process |
| CN113883949A (en) * | 2021-10-25 | 2022-01-04 | 河北西柏坡第二发电有限责任公司 | Rotation air preheater self-modulation sealing device |
-
2010
- 2010-03-24 CN CN201020139213XU patent/CN201705932U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818280A (en) * | 2011-06-10 | 2012-12-12 | 安徽省科捷再生能源利用有限公司 | Flexible contact type sealing device of air preheater of power station boiler |
| CN102410555A (en) * | 2011-10-18 | 2012-04-11 | 江苏透平密封高科技有限公司 | Composite sealing brush for air preheater |
| CN102865370A (en) * | 2012-08-24 | 2013-01-09 | 冯振洲 | Sealing device of dynamic and static combination part of rotating equipment |
| CN102901118A (en) * | 2012-10-19 | 2013-01-30 | 南京通用电气装备有限公司 | Flexible sealing structure of rotary air pre-heater |
| CN102901118B (en) * | 2012-10-19 | 2015-10-21 | 南京通用电气装备有限公司 | A kind of rotary regenerative air preheater flexible sealing structure |
| CN103175437A (en) * | 2012-11-20 | 2013-06-26 | 孟金来 | Flexible contact-type sealing device |
| CN103899756A (en) * | 2014-04-25 | 2014-07-02 | 中石化第十建设有限公司 | Sealing equipment and construction technology in LNG full containment tank vault air-blowing jacking process |
| CN103899756B (en) * | 2014-04-25 | 2016-03-23 | 中石化第十建设有限公司 | LNG holds tank vault air-blowing jacking procedure seals equipment and construction process entirely |
| CN113883949A (en) * | 2021-10-25 | 2022-01-04 | 河北西柏坡第二发电有限责任公司 | Rotation air preheater self-modulation sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20160324 |