CN204827545U - Reduce seal structure that low pressure jar steam admission side baffle cover and cylinder faying face leaked - Google Patents
Reduce seal structure that low pressure jar steam admission side baffle cover and cylinder faying face leaked Download PDFInfo
- Publication number
- CN204827545U CN204827545U CN201520536447.0U CN201520536447U CN204827545U CN 204827545 U CN204827545 U CN 204827545U CN 201520536447 U CN201520536447 U CN 201520536447U CN 204827545 U CN204827545 U CN 204827545U
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- China
- Prior art keywords
- cylinder
- steam admission
- diaphragm housing
- low pressure
- admission side
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Abstract
The utility model discloses a reduce seal structure that low pressure jar steam admission side baffle cover and cylinder faying face leaked, including cylinder and baffle cover, be provided with between cylinder and the baffle cover and hinder the vapour piece. The utility model discloses the round groove is opened to the circle side in the cylinder steam admission side, opens the round groove in steam admission side baffle cover excircle side, and whole circle hinders the vapour piece and places in above -mentioned two circle grooves. Through above structure, reduce the gas leakage aisle spare to rely on steam pressure, make and hinder the vapour piece and press close to the sealing surface, further reduce steam and leak, make five, six sections extraction temperature obviously drop.
Description
[technical field]
The utility model belongs to energy class steam turbine power generation technical field, relates to a kind of sealing configuration reducing low pressure (LP) cylinder steam admission side diaphragm housing ring and the leakage of cylinder junction plane.
[background technique]
What adjacent dividing plate is often contained in same dividing plate suit by power station high parameter large steam turbine low pressure (LP) cylinder, diaphragm housing ring is fixed on cylinder again, extraction opening is provided with between adjacent separator cover, because the reason such as installation quality or thermal distortion, in addition before and after diaphragm housing ring, steam pressure difference is very large, low pressure (LP) cylinder steam admission side diaphragm housing ring and cylinder junction plane are easy to leak, cause low pressure (LP) cylinder admission to bleed five, six sections of extraction openings (showing as five, six sections of extraction temperatures higher), decrease the acting ability of steam.
Current improvement five, six sections of measures that extraction temperature is high mainly process diaphragm housing ring and casing split distortion, but effect not obvious, there is no the measure that process diaphragm housing ring and cylinder junction plane leak.
[model utility content]
The purpose of this utility model is to solve above-mentioned the problems of the prior art, a kind of sealing configuration reducing low pressure (LP) cylinder steam admission side diaphragm housing ring and the leakage of cylinder junction plane is provided, this structure steam admission side diaphragm housing ring and cylinder junction plane place increase by a circle resistance vapour sheet, reduce leakage path area, and rely on vapor pressure, make resistance vapour sheet press close to sealing surface, reduce steam leakage further, increase working medium of effectively doing work.
To achieve these goals, the utility model is achieved by the following technical solutions:
Reduce a sealing configuration for low pressure (LP) cylinder steam admission side diaphragm housing ring and the leakage of cylinder junction plane, comprise cylinder and diaphragm housing ring, between cylinder and diaphragm housing ring, be provided with resistance vapour sheet.
The utility model further improves and is:
A circle ring recess is offered in cylinder steam admission side inner circle side, and diaphragm housing ring steam admission side cylindrical side corresponding position also offers a circle ring recess, and whole circle resistance vapour sheet transition fit is positioned in the ring recess of diaphragm housing ring, and the free end of resistance vapour sheet inserts in the ring recess of cylinder.
The sectional shape of resistance vapour sheet is L-type.
Resistance vapour sheet is connected into a whole circle mutually by least two semi-circlees.
Adjacent resistance vapour sheet joint is thinning, and overlapping connection.
Compared with prior art, the utility model has following beneficial effect:
The utility model opens a ring recess in cylinder steam admission side inner circle side, opens a ring recess in steam admission side diaphragm housing ring cylindrical side, and whole circle resistance vapour sheet is positioned in above-mentioned two ring recess.By above structure, reduce leakage path area, and rely on vapor pressure, make resistance vapour sheet press close to sealing surface, reduce steam leakage further, five, six sections of extraction temperatures are obviously declined.
[accompanying drawing explanation]
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the sectional view of the utility model resistance vapour sheet.
Wherein, 1 is cylinder; 2 is diaphragm housing ring; 3 is resistance vapour sheet; 4 first ring recess; 5 second ring recess.
[embodiment]
Below in conjunction with drawings and Examples, the utility model is described in more detail:
See Fig. 1, the utility model is included in cylinder 1 steam admission side inner circle side and opens the first ring recess 4, if position deficiency is slotted after answering repair welding annular flange again; The second ring recess 5 is opened, if position deficiency is slotted after answering repair welding annular flange again in steam admission side diaphragm housing ring 2 cylindrical side; L-type being hindered vapour sheet transition fit is positioned in diaphragm housing ring fluting, and resistance vapour sheet free end inserts in cylinder fluting; As shown in Figure 2, whole circle L-type resistance vapour sheet can form according to upper and lower two semi-circlees, easy for installation in order to process, and also can be made up of more than 4 segmental arcs, the thinning overlap in joint, increase sealing; By above structure, reduce leakage path area, and rely on vapor pressure, make resistance vapour sheet press close to sealing surface, reduce steam leakage further.
Above content is only and technological thought of the present utility model is described; protection domain of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technological scheme basis is done, within the protection domain all falling into the utility model claims.
Claims (5)
1. one kind is reduced the sealing configuration of low pressure (LP) cylinder steam admission side diaphragm housing ring and the leakage of cylinder junction plane, it is characterized in that, comprise cylinder (1) and diaphragm housing ring (2), between cylinder (1) and diaphragm housing ring (2), be provided with resistance vapour sheet (3).
2. the sealing configuration of minimizing low pressure (LP) cylinder steam admission side diaphragm housing ring according to claim 1 and the leakage of cylinder junction plane, it is characterized in that, a circle ring recess is offered in described cylinder (1) steam admission side inner circle side, diaphragm housing ring (2) steam admission side cylindrical side corresponding position also offers a circle ring recess, whole circle resistance vapour sheet (3) transition fit is positioned in the ring recess of diaphragm housing ring (2), and the free end of resistance vapour sheet (3) inserts in the ring recess of cylinder (1).
3. the sealing configuration of minimizing low pressure (LP) cylinder steam admission side diaphragm housing ring according to claim 1 and 2 and the leakage of cylinder junction plane, it is characterized in that, the sectional shape of described resistance vapour sheet (3) is L-type.
4. the sealing configuration of minimizing low pressure (LP) cylinder steam admission side diaphragm housing ring according to claim 3 and the leakage of cylinder junction plane, it is characterized in that, described resistance vapour sheet (3) is connected into a whole circle mutually by least two semi-circlees.
5. the sealing configuration of minimizing low pressure (LP) cylinder steam admission side diaphragm housing ring according to claim 4 and the leakage of cylinder junction plane, it is characterized in that, adjacent resistance vapour sheet (3) joint is thinning, and overlapping connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520536447.0U CN204827545U (en) | 2015-07-22 | 2015-07-22 | Reduce seal structure that low pressure jar steam admission side baffle cover and cylinder faying face leaked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520536447.0U CN204827545U (en) | 2015-07-22 | 2015-07-22 | Reduce seal structure that low pressure jar steam admission side baffle cover and cylinder faying face leaked |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204827545U true CN204827545U (en) | 2015-12-02 |
Family
ID=54685155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520536447.0U Expired - Fee Related CN204827545U (en) | 2015-07-22 | 2015-07-22 | Reduce seal structure that low pressure jar steam admission side baffle cover and cylinder faying face leaked |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204827545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108098252A (en) * | 2017-12-14 | 2018-06-01 | 大唐湘潭发电有限责任公司 | Steam turbine low-pressure inner casing split Deformation Repair technique and structure |
-
2015
- 2015-07-22 CN CN201520536447.0U patent/CN204827545U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108098252A (en) * | 2017-12-14 | 2018-06-01 | 大唐湘潭发电有限责任公司 | Steam turbine low-pressure inner casing split Deformation Repair technique and structure |
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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: 20151202 Termination date: 20160722 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |