CN2617929Y - Buffer honeycomb gas sealing - Google Patents
Buffer honeycomb gas sealing Download PDFInfo
- Publication number
- CN2617929Y CN2617929Y CN 03231530 CN03231530U CN2617929Y CN 2617929 Y CN2617929 Y CN 2617929Y CN 03231530 CN03231530 CN 03231530 CN 03231530 U CN03231530 U CN 03231530U CN 2617929 Y CN2617929 Y CN 2617929Y
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- China
- Prior art keywords
- long sealing
- sealing
- band
- tooth
- long
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- 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 - Lifetime
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model relates to a faveolate stream sealing device of buffering type, which comprises a sealing ring, a zone of honeycomb, a plurality of long sealing teeth at end, and a plurality of long sealing teeth in the center, applying in the sealing of interstage and shaft end of steam turbine unit, and is characterized in that the long sealing teeth in the center are cast out, and a groove with certain depth and width, in which wire mesh ring belt of soft body is arranged, is positioned at the root of the cast long sealing teeth in the center. The utility model has the advantages of good sealed performance, avoiding the damage of the surface of the shaft, and ensuring safe performance of the steam turbine unit.
Description
Technical field
The utility model relates to a kind of buffering type Honeycomb steam seal with pooling feature, can be used for the inter-stage sealing and the shaft end seal of steam turbine set, belongs to the steam turbine technical field of sealing technology.
Background technique
Our unit is in the utility model patent of application on November 22nd, 1999, novel steam unit inter-stage sealing by name and gland seal device were authorized on November 8th, 2000, granted patent number is ZL99254365.7, this model utility comprises that rotor cooperates the inter-stage and the shaft end seal device of the steam turbine set of forming with stator seal ring sound, form by seal ring 1, cellular band 2, the long sealing in end tooth 3, middle long sealing tooth 5, as shown in Figure 1.But by this 2 years unit operations, find unit in playing the shutdown process, when rotating speed reaches critical velocity or gap hour, middle long sealing tooth 5 just has the danger of bumping the mill diameter of axle, jeopardizes unit safety.
Summary of the invention
The purpose of this utility model is a kind of both safety of invention, the better buffering type Honeycomb steam seal of sealing effect.
For realizing above purpose, the technical solution of the utility model provides a kind of buffering type Honeycomb steam seal, form by seal ring, cellular band, the long sealing in end tooth, middle long sealing tooth, its characteristics are, long sealing tooth in the middle of casting out, the root of long sealing tooth is equipped with the groove of certain depth and certain width in the middle of casting out, and is built-in with software wire gaze band at groove.
The utility model adopts software wire gaze band to substitute middle long sealing tooth 5, software wire gaze band has better elastic, when it contacts with the diameter of axle, just compression is rebounded backward, thereby play buffer function, can not injure the axle surface, guarantee unit safety operation, can make simultaneously the rubber-like software wire gaze band and diameter of axle surface keep less clearance, even can make the gap reach null value.Moreover its reticular structure comes vapour also to have very strong buffer function to the side, and sealing effect is better.
The utility model has the advantages that sealing effect is better, avoid injuring the axle surface, guarantee unit safety operation.
Description of drawings
Fig. 1 is sealing of novel steam unit inter-stage and gland seal device structural representation;
Fig. 2 is a buffering type Honeycomb steam seal structural representation.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 2, be Honeycomb steam seal device-buffering type Honeycomb steam seal structural representation, form by seal ring 1, cellular band 2, the long sealing in end tooth 3, software wire gaze band 6 with pooling feature.
Select for use the software wire gaze to be woven into the guipure ring 6 of several layers of formation.
Processing seal ring 1, size according to the steam turbine capacity, make seal ring 1 interior circle have several that groove of certain depth and certain width is arranged, there is the long sealing in end tooth 3 end of seal ring 1, for avoiding injuring the axle surface, shorter than former end long sealing tooth, be that guipure ring 6 is short, reaching soldering cellular band 2 between the long tooth of groove and end between several groove, inlaying the guipure ring 6 that prefabricated software wire gaze is formed in several groove, be the buffering type Honeycomb steam seal, it be installed on the body at last and cooperate with axle 4.
Claims (3)
1. buffering type Honeycomb steam seal, form by seal ring (1), cellular band (2), the long sealing in end tooth (3), middle long sealing tooth (5), it is characterized in that, long sealing tooth (5) in the middle of casting out, the root of long sealing tooth (5) is equipped with the groove of certain depth and certain width in the middle of casting out, and is built-in with software wire gaze band (6) at groove.
2. buffering type Honeycomb steam seal according to claim 1 is characterized in that, described end long sealing tooth (3) is shorter than guipure ring (6).
3. buffering type Honeycomb steam seal according to claim 1 is characterized in that, described software wire gaze band (6) is the band that several layers of software wire are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03231530 CN2617929Y (en) | 2003-05-27 | 2003-05-27 | Buffer honeycomb gas sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03231530 CN2617929Y (en) | 2003-05-27 | 2003-05-27 | Buffer honeycomb gas sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2617929Y true CN2617929Y (en) | 2004-05-26 |
Family
ID=34248209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03231530 Expired - Lifetime CN2617929Y (en) | 2003-05-27 | 2003-05-27 | Buffer honeycomb gas sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2617929Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966383A (en) * | 2012-11-16 | 2013-03-13 | 清华大学 | Air seal device and manufacturing method thereof |
| CN103075205A (en) * | 2012-12-28 | 2013-05-01 | 东方电气集团东方汽轮机有限公司 | Novel steam seal of steam turbine and processing method thereof |
| CN107559199A (en) * | 2017-10-19 | 2018-01-09 | 西安热工研究院有限公司 | A kind of contact type sealing structure suitable for supercritical carbon dioxide compressor set |
| CN113653803A (en) * | 2021-08-11 | 2021-11-16 | 中国联合重型燃气轮机技术有限公司 | Shaft seal structure and gas turbine with same |
-
2003
- 2003-05-27 CN CN 03231530 patent/CN2617929Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966383A (en) * | 2012-11-16 | 2013-03-13 | 清华大学 | Air seal device and manufacturing method thereof |
| CN102966383B (en) * | 2012-11-16 | 2015-07-08 | 清华大学 | Air seal device and manufacturing method thereof |
| CN103075205A (en) * | 2012-12-28 | 2013-05-01 | 东方电气集团东方汽轮机有限公司 | Novel steam seal of steam turbine and processing method thereof |
| CN107559199A (en) * | 2017-10-19 | 2018-01-09 | 西安热工研究院有限公司 | A kind of contact type sealing structure suitable for supercritical carbon dioxide compressor set |
| CN113653803A (en) * | 2021-08-11 | 2021-11-16 | 中国联合重型燃气轮机技术有限公司 | Shaft seal structure and gas turbine with same |
| CN113653803B (en) * | 2021-08-11 | 2024-06-11 | 中国联合重型燃气轮机技术有限公司 | Shaft seal structure and gas turbine with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130527 Granted publication date: 20040526 |