CN203533606U - Novel center cylinder sealing device of air preheater - Google Patents
Novel center cylinder sealing device of air preheater Download PDFInfo
- Publication number
- CN203533606U CN203533606U CN201320650289.2U CN201320650289U CN203533606U CN 203533606 U CN203533606 U CN 203533606U CN 201320650289 U CN201320650289 U CN 201320650289U CN 203533606 U CN203533606 U CN 203533606U
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- CN
- China
- Prior art keywords
- air preheater
- center cylinder
- sealing device
- spring
- carbon dam
- 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
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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 discloses a novel center cylinder sealing device of an air preheater. The novel center cylinder sealing device of the air preheater comprises multiple graphite sealing rings and springs. The graphite sealing rings are respectively arranged in an annular groove in a sealing groove base. The inner diameter face of each graphite sealing ring makes contact with a center cylinder and the outer diameter face of each graphite sealing ring is embedded in the sealing groove base. Each graphite sealing ring is composed of multiple arc sections which are in lap joint in a staggered mode. The springs 5 are installed in outer circular grooves of the graphite sealing rings. The springs are extension springs and two connectors at the two ends of each spring are connected together. According to the novel center cylinder sealing device of the air preheater, the designed structure is more scientific and reasonable, leakage of air and dust is reduced, and the work efficiency of the air preheater is greatly improved.
Description
Technical field
The utility model relates to a kind of sealing device, relates in particular to a kind of Novel air preheater central drum's sealing device.
Background technology
Air preheater is a kind of heat-exchange apparatus for large-sized boiler, and it utilizes the heat of boiler smoke to carry out the required air of heating flame, with this, improves the efficiency of boiler.
When flue gas passes through air preheater heat accumulating element, part dust accumulation is on heat accumulating element, rotation with air preheater is carried by high speed Secondary Air from bottom to top, a wind, in order to prevent leaking outside of dust, mounting sealing device all on central tube, hermetically-sealed construction is mostly graphite packing_seal.
Operation along with air preheater, the central tube of rotation and the friction of graphite packing, and the spin friction of rocking of rotor causes producing between rotor and graphite packing gap and increases gradually, the hot blast that carries dust leaks outside through gap, with hourglass ash, aggravate again the wearing and tearing of hermetically-sealed construction, cause central drum's sealing gap increasing, leak out, leak ash and increase gradually.The components aging such as the motor of so not only contaminated environment, and air preheater, temperature element, unit easily produces fault, affects unit safety operation, leaks out simultaneously and also can reduce the efficiency of air preheater.
Utility model content
In order to solve the existing weak point of above-mentioned technology, the utility model provides a kind of Novel air preheater central drum's sealing device.
In order to solve above technical problem, the technical solution adopted in the utility model is: a kind of Novel air preheater central drum's sealing device, and carbon dam, spring, carbon dam is a plurality of, is installed in the cannelure of seal groove seat; The aperture surface of carbon dam contacts with central tube, and the outer diametric plane of carbon dam is embedded in seal groove seat;
Carbon dam is comprised of a plurality of segmental arcs, staggered overlap joint between each segmental arc; Spring 5 is arranged in the peripheral groove of carbon dam, and spring is that extension spring two end connectors connect together.
The structural design of the utility model design is more scientific and reasonable, has reduced the leakage of wind, ash, has greatly improved the operating efficiency of air preheater.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of carbon dam of the present utility model.
In figure: 1, central tube; 2, baffle plate; 3, seal groove seat; 4, carbon dam; 5, spring.
The specific embodiment
As shown in Figure 1 and Figure 2, the utility model comprises central tube 1, baffle plate 2, seal groove seat 3, carbon dam 4 and spring 5.
Sealing ring remains concentric with central tube like this, can adapt to transient state radial deformation or eccentricity rotor movement.Because the size of seal clearance is the principal element that affects dielectric leakage, so this device greatly reduced the leakage of wind, ash, thereby improved the operational efficiency of air preheater, makes unit safety operation.
Claims (1)
1. a Novel air preheater central drum's sealing device, comprises carbon dam, spring, it is characterized in that: described carbon dam is a plurality of, is installed in the cannelure of seal groove seat; The aperture surface of described carbon dam contacts with central tube, and the outer diametric plane of carbon dam is embedded in seal groove seat;
Described carbon dam is comprised of a plurality of segmental arcs, staggered overlap joint between each segmental arc; Described spring (5) is arranged in the peripheral groove of carbon dam, and spring is extension spring, and two end connectors connect together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650289.2U CN203533606U (en) | 2013-10-22 | 2013-10-22 | Novel center cylinder sealing device of air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650289.2U CN203533606U (en) | 2013-10-22 | 2013-10-22 | Novel center cylinder sealing device of air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203533606U true CN203533606U (en) | 2014-04-09 |
Family
ID=50419807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320650289.2U Expired - Fee Related CN203533606U (en) | 2013-10-22 | 2013-10-22 | Novel center cylinder sealing device of air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203533606U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265904A (en) * | 2014-10-13 | 2015-01-07 | 广东梅雁吉祥水电股份有限公司 | Main shaft seal structure |
| CN104514887A (en) * | 2014-12-26 | 2015-04-15 | 大连华阳密封股份有限公司 | Carbon ring seal employing LST |
| CN106122078A (en) * | 2016-08-30 | 2016-11-16 | 湖北双剑鼓风机股份有限公司 | The asymmetric carbon ring seal device of card slot type for centrifugal blower |
-
2013
- 2013-10-22 CN CN201320650289.2U patent/CN203533606U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265904A (en) * | 2014-10-13 | 2015-01-07 | 广东梅雁吉祥水电股份有限公司 | Main shaft seal structure |
| CN104265904B (en) * | 2014-10-13 | 2017-07-07 | 广东梅雁吉祥水电股份有限公司 | A kind of main shaft sealing construction |
| CN104514887A (en) * | 2014-12-26 | 2015-04-15 | 大连华阳密封股份有限公司 | Carbon ring seal employing LST |
| CN106122078A (en) * | 2016-08-30 | 2016-11-16 | 湖北双剑鼓风机股份有限公司 | The asymmetric carbon ring seal device of card slot type for centrifugal blower |
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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: 20140409 Termination date: 20181022 |