CN109026204A - A kind of high, middle pressure outer shell split flange arrangement - Google Patents
A kind of high, middle pressure outer shell split flange arrangement Download PDFInfo
- Publication number
- CN109026204A CN109026204A CN201810653455.1A CN201810653455A CN109026204A CN 109026204 A CN109026204 A CN 109026204A CN 201810653455 A CN201810653455 A CN 201810653455A CN 109026204 A CN109026204 A CN 109026204A
- Authority
- CN
- China
- Prior art keywords
- flange arrangement
- split
- outer shell
- middle pressure
- groove
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/30—Exhaust heads, chambers, or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A kind of high, middle pressure outer shell split flange arrangement, is related to a kind of flange arrangement field.The present invention is to solve the problem of existing high, middle pressure outer shell horizontal joint flange split leakiness vapour in steam-turbine unit operation.Groove is provided on the split of flange arrangement top half of the present invention, the area of the groove is the 60%~70% of split area, flange arrangement lower half portion is provided with bleed-off passage, and when two parts are bonded above and below flange arrangement, groove can be in communication with the outside by bleed-off passage.The present invention is high suitable for steam-turbine unit, press the connection of outer shell pipeline, can effectively prevent cylinder internal steam leakage outside cylinder.
Description
Technical field
The invention belongs to a kind of flange arrangements.
Background technique
High, middle pressure outer shell horizontal joint flange is limited to the factor of processing and manufacturing ability at present, in steam-turbine unit reality
In the case that border is run, it is difficult to ensure that split does not generate leakage vapour phenomenon.
Summary of the invention
The present invention be in order to solve existing high, middle pressure outer shell horizontal joint flange in steam-turbine unit operation, in divide
The problem of face leakiness vapour, now provides a kind of high, middle pressure outer shell split flange arrangement.
A kind of high, middle pressure outer shell split flange arrangement, which is characterized in that opened on the split of flange arrangement top half
Fluted 1, the area of the groove 1 is the 60%~70% of split area,
Flange arrangement lower half portion is provided with bleed-off passage 2, when two parts are bonded above and below flange arrangement, 2 energy of bleed-off passage
It is enough that groove 1 is in communication with the outside.
A kind of high, middle pressure outer shell split flange arrangement is slotted compared with traditional flange arrangement by using upper half,
So that upper and lower half flange contact area is reduced, under same bolt pretightening, forced area is reduced, and pressure increases, and contact surface connects
It touches even closer, effectively prevent cylinder internal steam leakage outside cylinder.
Meanwhile split lower half flange face opens bleed-off passage, unit running process in special circumstances, even if there is part steaming
Vapour can also be leaked into the slot of upper half by internal leakage, then be extracted out by lower half bleed-off passage, formed second sealing, prevented from revealing
To outside workshop.
Detailed description of the invention
Fig. 1 is a kind of bottom view of high, middle pressure outer shell split flange arrangement top half；
A kind of sectional view when Fig. 2 is high, middle pressure outer shell split flange arrangement upper and lower part fitting；
Fig. 3 is a kind of high, middle partial sectional view pressed at the extraction opening of outer shell split flange arrangement lower half portion.
Specific embodiment
Specific embodiment one, referring to Fig.1~Fig. 3 illustrate present embodiment, described in present embodiment it is a kind of it is high,
Middle pressure outer shell split flange arrangement,
As shown in Figure 1, being provided with 2 strip grooves, 1,2 strip grooves 1 on the split of flange arrangement top half along method
Blue structural edge extends, similar to the shape of bracket.The area of the groove 1 is the 60%~70% of split area, and recessed
1 depth of slot is 2mm.As shown in Fig. 2, centre can vacate the position of groove, in this way meeting when the fitting of flange arrangement upper and lower part
Forced area is reduced on split increases the method for pressure to reduce leakage vapour.
As shown in figure 3, flange arrangement lower half portion is provided with 2 groups of bleed-off passages 2, disposed respectively in the two sides of flange arrangement,
Bleed-off passage 2 includes first part 21 and second part 22, and the first part 21 is mutually perpendicular to be connected to second part 22, the
A part 21 is opened at split perpendicular to split；Second part 22 is arranged along the width direction of flange arrangement.Work as method
Above and below blue structure when two parts fitting, groove 1 can be in communication with the outside by bleed-off passage 2, leakage vapour be introduced in corresponding pipeline, i.e.,
Make have leakage vapour in the extreme circumstances, can be also discharged into corresponding pipeline with bleed-off passage 2, to effectively prevent on high, middle pressure outer shell
Generate leakage vapour.
Claims (5)
1. a kind of high, middle pressure outer shell split flange arrangement, which is characterized in that be provided on the split of flange arrangement top half
The area of groove (1), the groove (1) is the 60%~70% of split area,
Flange arrangement lower half portion is provided with bleed-off passage (2), when two parts are bonded above and below flange arrangement, bleed-off passage (2) energy
It is enough that groove (1) is in communication with the outside.
2. a kind of high, middle pressure outer shell split flange arrangement according to claim 1, which is characterized in that the number of groove (1)
Amount is 2, and groove (1) is the strip groove extended along flange arrangement edge.
3. a kind of high, middle pressure outer shell split flange arrangement according to claim 1 or 2, which is characterized in that groove (1)
Depth is 2mm.
4. a kind of high, middle pressure outer shell split flange arrangement according to claim 1, which is characterized in that bleed-off passage (2)
It is 2 groups.
5. a kind of high, middle pressure outer shell split flange arrangement according to claim 1 or 4, which is characterized in that bleed-off passage
It (2) include first part (21) and second part (22), the first part (21) is mutually perpendicular to be connected to second part (22),
First part (21) is opened at split perpendicular to split；Second part (22) is set along the width direction of flange arrangement
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810653455.1A CN109026204A (en) | 2018-06-22 | 2018-06-22 | A kind of high, middle pressure outer shell split flange arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810653455.1A CN109026204A (en) | 2018-06-22 | 2018-06-22 | A kind of high, middle pressure outer shell split flange arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109026204A true CN109026204A (en) | 2018-12-18 |
Family
ID=64610163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810653455.1A Pending CN109026204A (en) | 2018-06-22 | 2018-06-22 | A kind of high, middle pressure outer shell split flange arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026204A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856821A (en) * | 2022-06-13 | 2022-08-05 | 杭州汽轮机股份有限公司 | Bearing pedestal and gas turbine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1089011A (en) * | 1996-09-11 | 1998-04-07 | Mitsubishi Heavy Ind Ltd | Flange for steam turbine casing |
| CN204386675U (en) * | 2014-11-26 | 2015-06-10 | 嘉善县汾湖铸钢厂 | A kind of High Pressure Inner Cylinder of Steam Turbine |
| CN105765176A (en) * | 2013-10-08 | 2016-07-13 | 诺沃皮尼奥内股份有限公司 | Casing for a rotating machine and rotating machine including such casing |
| CN206928977U (en) * | 2017-05-12 | 2018-01-26 | 中信重工机械股份有限公司 | A kind of LOAD REDUCING SLOT for preventing casing split from deforming |
-
2018
- 2018-06-22 CN CN201810653455.1A patent/CN109026204A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1089011A (en) * | 1996-09-11 | 1998-04-07 | Mitsubishi Heavy Ind Ltd | Flange for steam turbine casing |
| CN105765176A (en) * | 2013-10-08 | 2016-07-13 | 诺沃皮尼奥内股份有限公司 | Casing for a rotating machine and rotating machine including such casing |
| CN204386675U (en) * | 2014-11-26 | 2015-06-10 | 嘉善县汾湖铸钢厂 | A kind of High Pressure Inner Cylinder of Steam Turbine |
| CN206928977U (en) * | 2017-05-12 | 2018-01-26 | 中信重工机械股份有限公司 | A kind of LOAD REDUCING SLOT for preventing casing split from deforming |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856821A (en) * | 2022-06-13 | 2022-08-05 | 杭州汽轮机股份有限公司 | Bearing pedestal and gas turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181218 |
|
| WD01 | Invention patent application deemed withdrawn after publication |