CN205957214U - Sealing device for central tube of air preheater - Google Patents
Sealing device for central tube of air preheater Download PDFInfo
- Publication number
- CN205957214U CN205957214U CN201620928513.3U CN201620928513U CN205957214U CN 205957214 U CN205957214 U CN 205957214U CN 201620928513 U CN201620928513 U CN 201620928513U CN 205957214 U CN205957214 U CN 205957214U
- Authority
- CN
- China
- Prior art keywords
- carbon
- sealing ring
- spring
- casing
- precise sealing
- 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
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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- Sealing Devices (AREA)
Abstract
The utility model provides a sealing device for central tube of air preheater, including baffle, seal groove seat, carbon precise sealing ring and spring, carbon precise sealing ring is a plurality of, all installs in the ring channel of seal groove seat, carbon precise sealing ring is connected to form by a plurality of segmental arcs, the spring mounting is at carbon precise sealing ring's excircle inslot, is equipped with one side open -ended in the periphery of carbon precise sealing ring and spring and strengthens the casing, strengthens the opening part orientation center section of thick bamboo of casing, and the packing has the soft packing in the cavity that the outer diametral plane of the inner surface by strengthening casing two terminal upper and lower faces, carbon precise sealing ring, a center section of thick bamboo is formed. The utility model discloses in, the use of casing is strengthened and the spring can be protected on the one hand, extension spring life, on the other hand can effectively hinder ash blocking dirt and impurity enters into the clearance between two adjacent carbon precise sealing ring sections, it is sealed through utilizing a soft packing and a center section of thick bamboo, can not receive center section of thick bamboo the thermal expansion and influence sealing performance, it is sealed reliable.
Description
Technical field
This utility model is related to a kind of sealing device, more particularly, to a kind of air preheater central drum's sealing device.
Background technology
At present, air preheater central drum's sealing still has serious leakage problem, such as patent
(2013206502892) a kind of air preheater central drum's sealing device disclosed in, in actual motion, on the one hand due to by temperature
That spends comes and go, and cannot accurately set its gap data, thus leading to its gap of air preheater central tube with temperature
Change and change, wear and tear with carbon dam, increase gap；On the other hand, when the rotation of central tube produces partially
During difference, multistage connects can stay in the gap of carbon dam being formed hides dust and the impurity that hot blast carries, due in gap
Dust and impurity not easy-clear, therefore carbon dam be difficult coaxial with central tube and holding small gap, therefore leak out, leak grey by
Cumulative big.
Utility model content
For above deficiency, this utility model provides a kind of air preheater central drum's sealing device, and its sealing property can
Lean on, leak out, to leak grey rate little.
The technical solution of the utility model：Air preheater central drum's sealing device, including baffle plate, sealing groove seat, carbon
Sealing ring and spring, described carbon dam is multiple, is installed in the cannelure of sealing groove seat；Described carbon dam by
Multiple segmental arcs connect composition, and described spring is arranged in the peripheral groove of carbon dam, in the periphery of carbon dam and spring
It is provided with the reinforcement housing of a side opening, strengthens at the opening of housing towards central tube, by strengthening two up and down of shell end
It is filled with soft packing in plate face, the aperture surface of carbon dam, the cavity of outer diameter face composition of central tube.
The beneficial effects of the utility model：In this utility model, that strengthens housing can protect spring using one side, prolong
Long spring service life, on the other hand can effectively blocks dust and impurity enter between two neighboring carbon pressurizing ring segment
In gap；By using soft packing and central drum's sealing, will not acceptor center cylinder expanded by heating and affect sealing property, sealing can
Lean on.
Brief description
Fig. 1 is overall structure diagram of the present utility model.
Fig. 2 is the structural representation of this utility model carbon dam.
Specific embodiment
Air preheater central drum's sealing device as shown in Figure 1, including baffle plate 2, sealing groove seat 3, carbon dam 7 and
Spring 5, described carbon dam 7 is multiple, is installed in the cannelure of sealing groove seat 3；Described carbon dam 7 is by multiple
Segmental arc connects composition, as shown in Fig. 2 described spring 5 is arranged in the peripheral groove of carbon dam 7, in carbon dam 7 and bullet
The periphery of spring 5 is provided with the reinforcement housing 4 of a side opening, strengthens towards central tube 1 at the opening of housing 4, last by strengthening housing 4
It is filled with soft packing in two plate faces up and down at end, the aperture surface of carbon dam 7, the cavity of outer diameter face composition of central tube 1
6.Described soft packing adopts PTFE.
Claims (1)
1. air preheater central drum's sealing device, including baffle plate (2), sealing groove seat (3), carbon dam (7) and spring
(5), described carbon dam (7) is multiple, is installed in the cannelure of sealing groove seat (3)；Described carbon dam (7) by
Multiple segmental arcs connect composition, described spring (5) be arranged in the peripheral groove of carbon dam (7) it is characterised in that：Close in carbon
The periphery of seal ring (7) and spring (5) is provided with the reinforcement housing (4) of a side opening, strengthens at the opening of housing (4) towards central tube
(1), by the outer diameter face strengthening two plate faces up and down of housing (4) end, the aperture surface of carbon dam (7), central tube (1)
It is filled with soft packing (6) in the cavity of composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620928513.3U CN205957214U (en) | 2016-08-23 | 2016-08-23 | Sealing device for central tube of air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620928513.3U CN205957214U (en) | 2016-08-23 | 2016-08-23 | Sealing device for central tube of air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205957214U true CN205957214U (en) | 2017-02-15 |
Family
ID=57978153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620928513.3U Expired - Fee Related CN205957214U (en) | 2016-08-23 | 2016-08-23 | Sealing device for central tube of air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205957214U (en) |
-
2016
- 2016-08-23 CN CN201620928513.3U patent/CN205957214U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20170215 Termination date: 20180823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |