JPH04107403U - Steam turbine high and medium pressure casing - Google Patents
Steam turbine high and medium pressure casingInfo
- Publication number
- JPH04107403U JPH04107403U JP1710291U JP1710291U JPH04107403U JP H04107403 U JPH04107403 U JP H04107403U JP 1710291 U JP1710291 U JP 1710291U JP 1710291 U JP1710291 U JP 1710291U JP H04107403 U JPH04107403 U JP H04107403U
- Authority
- JP
- Japan
- Prior art keywords
- steam
- gap
- casing
- pressure
- blade row
- 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.)
- Withdrawn
Links
- 238000001816 cooling Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
(57)【要約】
【目的】 内車室の熱変形を防止する。
【構成】 内車室8に設けた穴17(又は管)によっ
て、高圧部翼列4内の抽気口16を内車室8と外車室5
との間隙9に連通する。これにより、該間隙9内の蒸気
に比べて高温な、抽気口16内の蒸気の一部を該間隙9
に注入して、内車室外側の過剰な冷却を抑え、内車室8
の熱変形を防止する。
(57) [Summary] [Purpose] To prevent thermal deformation of the inner vehicle compartment. [Structure] A hole 17 (or pipe) provided in the inner casing 8 connects the air bleed port 16 in the high pressure section blade row 4 to the inner casing 8 and the outer casing 5.
It communicates with the gap 9 between. As a result, part of the steam in the bleed port 16, which has a higher temperature than the steam in the gap 9, is transferred to the gap 9.
Injected into the interior of the vehicle to suppress excessive cooling on the outside of the interior of the vehicle,
Prevent thermal deformation.
Description
【0001】0001
本考案は、蒸気タービン高中圧車室の構造に関する。 The present invention relates to the structure of a steam turbine high and intermediate pressure casing.
【0002】0002
図2は、従来の蒸気タービン高中圧車室の構造を示す。図2において、蒸気は 、高圧入口管1より高圧入口部2を通って調速段3へ流入し、高圧部翼列4へ導 かれる。高圧部翼列4を流出した蒸気は、それから、外車室5の外に導かれ、再 熱された後、中圧入口管6より中圧翼列7に流入する。 FIG. 2 shows the structure of a conventional steam turbine high and intermediate pressure casing. In Figure 2, the steam is , flows from the high-pressure inlet pipe 1 through the high-pressure inlet section 2 to the governor stage 3, and is introduced to the high-pressure section blade row 4. It will be destroyed. The steam that has flowed out of the high-pressure blade row 4 is then guided outside the outer casing 5 and recycled. After being heated, it flows into the medium pressure blade row 7 through the medium pressure inlet pipe 6.
【0003】 また、高圧部翼列4を流出した蒸気の一部は、高圧内車室8と外車室5との間 隙9を通過し、高圧内車室8に設けたノズル10から中圧入口部11に隣接した シールド内部空間12へ流入する。この流入蒸気は、それから、外車室5とサー マルシールド板13との間に設けたスリット14を通して中圧入口部11へ合流 し、再熱蒸気と共に中圧部翼列7を通過した後、排気室15より車室外へ流出す る。さらに、前述した高圧部翼列4内では、蒸気の一部が抽気口16より外部へ 抽気される。0003 In addition, some of the steam that has flowed out of the high-pressure blade row 4 is transferred between the high-pressure inner casing 8 and the outer casing 5. Passing through the gap 9, from the nozzle 10 provided in the high pressure inner casing 8 adjacent to the medium pressure inlet part 11. It flows into the shield internal space 12. This inflow steam is then transferred to the outer compartment 5 and the It merges into the medium pressure inlet part 11 through the slit 14 provided between the multi-shield plate 13 After passing through the intermediate pressure blade row 7 together with the reheated steam, it flows out of the cabin from the exhaust chamber 15. Ru. Furthermore, within the high-pressure section blade row 4 described above, a portion of the steam flows outside through the bleed port 16. The air is extracted.
【0004】 なお、高圧部翼列4を流出した蒸気の一部を内車室8と外車室5との間隙9を 通過させるのは、高圧部翼列4を流出した蒸気が高圧部翼列4内の蒸気及び再熱 蒸気より温度が低いことを利用し、外車室5の温度上昇を防ぐためである。0004 Note that a part of the steam that has flowed out of the high-pressure blade row 4 is transferred to the gap 9 between the inner casing 8 and the outer casing 5. The steam that flows out of the high-pressure section blade row 4 is passed through the high-pressure section blade row 4 and the steam inside the high-pressure section blade row 4 and reheated. This is to prevent the temperature of the outer compartment 5 from rising by taking advantage of the fact that the temperature is lower than that of steam.
【0005】[0005]
ところで、以上述べた従来の蒸気タービン高中圧車室の構造においては、外車 室5と内車室8との間隙9内は高圧部翼列4より流出した蒸気が流入することに より、冷却される。このとき、高圧部翼列4内の蒸気と、外車室5と内車室8と の間隙9との温度差が大きい場合、内車室8が熱変形するという問題がある。 By the way, in the structure of the conventional steam turbine high and medium pressure casing described above, Steam flowing out from the high-pressure blade row 4 flows into the gap 9 between the chamber 5 and the inner casing 8. It is cooled down more. At this time, the steam in the high-pressure blade row 4 and the outer casing 5 and inner casing 8 If the temperature difference between the gap 9 and the gap 9 is large, there is a problem that the inner compartment 8 is thermally deformed.
【0006】 本考案は、このような従来技術の課題を解決するためになされたもので、内車 室の熱変形防止が有効に図れる蒸気タービンの高中圧車室を提供することを目的 とする。[0006] This invention was devised to solve the problems of the conventional technology. The purpose is to provide a high-medium pressure casing for a steam turbine that can effectively prevent thermal deformation of the casing. shall be.
【0007】[0007]
上記の課題を解決するために、本考案は、蒸気タービンの高中圧車室において 、高圧部翼列内の抽気口を内車室と外車室との間隙に連通したものである。 In order to solve the above problems, the present invention has been developed in the high and medium pressure casing of a steam turbine. , the air bleed port in the high-pressure blade row is communicated with the gap between the inner and outer casings.
【0008】[0008]
上記の手段によれば、高圧部翼列内の抽気口を内車室と外車室との間隙に連通 することにより、内車室と外車室との間隙内の蒸気に比べて高温な、抽気口内の 蒸気の一部を内車室と外車室との隙間に注入し、これにより内車室外側の過剰な 冷却を抑え、内車室の熱変形を防止できる。 According to the above means, the air bleed port in the high-pressure section blade row is communicated with the gap between the inner casing and the outer casing. By doing so, the steam inside the bleed port is hotter than the steam in the gap between the inner and outer compartments. A portion of the steam is injected into the gap between the inner and outer compartments, thereby eliminating excess water on the outside of the inner and outer compartments. It suppresses cooling and prevents thermal deformation of the interior of the vehicle.
【0009】[0009]
以下、図1を参照して本考案の一実施例について詳細に説明する。図1は図2 の一部を拡大して本考案を説明するための図であり、全体構成は図2に示した従 来のものと同一であるので、重複する説明は省略する。 Hereinafter, one embodiment of the present invention will be described in detail with reference to FIG. Figure 1 is Figure 2 2 is a partially enlarged diagram for explaining the present invention, and the overall configuration is similar to that shown in FIG. 2. Since this is the same as the previous one, duplicate explanation will be omitted.
【0010】 図1において、高圧部翼列4内に設けられて蒸気の一部を外部へ抽気する抽気 口16が、本実施例によれば、内車室8に穿設した穴17を介して内車室8と外 車室5との間隙9に連通されている。0010 In FIG. 1, a bleed air is provided in the high pressure blade row 4 to bleed part of the steam to the outside. According to this embodiment, the opening 16 connects the inner compartment 8 and the outside via the hole 17 formed in the inner compartment 8. It is communicated with a gap 9 between the vehicle compartment 5 and the vehicle compartment 5.
【0011】 このように、高圧部翼列4内の抽気口16を内車室8と外車室5との間隙9に 穴17を介して連通することにより、内車室8と外車室5との間隙9内の蒸気に 比べて高温な、抽気口16内の蒸気の一部を連通穴17を通して内車室8と外車 室5との間隙9に注入し、これにより内車室8外側の過剰な冷却を抑え、内車室 8の熱変形を防止することができる。[0011] In this way, the air bleed port 16 in the high pressure blade row 4 is located in the gap 9 between the inner casing 8 and the outer casing 5. By communicating through the hole 17, the steam in the gap 9 between the inner compartment 8 and the outer compartment 5 is A portion of the steam in the bleed port 16, which is relatively high temperature, is passed through the communication hole 17 to the inner compartment 8 and the outer compartment Injected into the gap 9 with the chamber 5, this suppresses excessive cooling of the outside of the inner vehicle chamber 8 and cools the inner vehicle interior. No. 8 thermal deformation can be prevented.
【0012】 なお、以上述べた実施例における連通穴17に代えて、連通管により抽気口1 6を内車室8と外車室5との隙間9に連通してもよい。0012 In addition, instead of the communication hole 17 in the embodiment described above, a communication pipe is used to connect the air bleed port 1. 6 may be communicated with a gap 9 between the inner compartment 8 and the outer compartment 5.
【0013】[0013]
以上述べたように、本考案によれば、蒸気タービンの高中圧車室において、高 圧部翼列内の抽気口を内車室と外車室との間隙に連通することにより、内車室と 外車室との間隙内の蒸気に比べて高温な、抽気口内の蒸気の一部を内車室と外車 室との隙間に注入し、これにより内車室外側の過剰な冷却を抑え、内車室の熱変 形を防止できるという優れた効果が奏される。 As described above, according to the present invention, high- and intermediate-pressure casings of steam turbines By communicating the air bleed port in the pressure section blade row with the gap between the inner and outer casings, the inner and outer casings are A portion of the steam in the bleed port, which is hotter than the steam in the gap with the outer car compartment, is transferred to the inner and outer car compartments. Injected into the gap between the inside and outside of the car, this suppresses excessive cooling of the outside of the inside of the car and prevents thermal changes in the inside of the car. It has an excellent effect of preventing the mold from forming.
【図1】本考案の一実施例に係わる蒸気タービン高中圧
車室を示す要部の断面図である。FIG. 1 is a sectional view of essential parts showing a steam turbine high and intermediate pressure casing according to an embodiment of the present invention.
【図2】従来の蒸気タービン高中圧車室を示す全体の断
面図である。FIG. 2 is an overall sectional view showing a conventional steam turbine high and intermediate pressure casing.
4 高圧部翼列 5 外車室 8 内車室 9 間隙 16 抽気口 17 連通穴 4 High pressure section blade row 5 Outer compartment 8 Inner compartment 9 Gap 16 Air bleed port 17 Communication hole
Claims (1)
部翼列内の抽気口を内車室と外車室との間隙に連通した
ことを特徴とする蒸気タービンの高中圧車室。1. A high and intermediate pressure casing for a steam turbine, wherein an air bleed port in a high pressure section blade row is communicated with a gap between an inner casing and an outer casing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1710291U JPH04107403U (en) | 1991-02-28 | 1991-02-28 | Steam turbine high and medium pressure casing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1710291U JPH04107403U (en) | 1991-02-28 | 1991-02-28 | Steam turbine high and medium pressure casing |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04107403U true JPH04107403U (en) | 1992-09-17 |
Family
ID=31903930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1710291U Withdrawn JPH04107403U (en) | 1991-02-28 | 1991-02-28 | Steam turbine high and medium pressure casing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04107403U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018066364A (en) * | 2016-10-21 | 2018-04-26 | 三菱重工業株式会社 | Steam turbine and steam turbine control method |
-
1991
- 1991-02-28 JP JP1710291U patent/JPH04107403U/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018066364A (en) * | 2016-10-21 | 2018-04-26 | 三菱重工業株式会社 | Steam turbine and steam turbine control method |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19950518 |