CN114542195A - Reversing air cylinder air inlet pipe structure of marine steam turbine - Google Patents
Reversing air cylinder air inlet pipe structure of marine steam turbine Download PDFInfo
- Publication number
- CN114542195A CN114542195A CN202210229944.0A CN202210229944A CN114542195A CN 114542195 A CN114542195 A CN 114542195A CN 202210229944 A CN202210229944 A CN 202210229944A CN 114542195 A CN114542195 A CN 114542195A
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- China
- Prior art keywords
- reversing
- cylinder
- inlet pipe
- steam
- steam inlet
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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.)
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Classifications
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- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention aims to provide a reversing cylinder air inlet pipe structure of a marine steam turbine, which comprises a cylinder, a reversing steam inlet flange, a reversing cylinder and a reversing steam turbine air inlet pipe, wherein the reversing steam inlet flange is fixed on the cylinder, one end of the reversing steam turbine air inlet pipe is fixed with the reversing steam inlet flange, and the other end of the reversing steam turbine air inlet pipe is sleeved into an air inlet of the reversing cylinder. The structure of the invention solves the problems that the original marine reversing cylinder can generate thermal expansion and thermal stress, and the thermal deformation can be absorbed only through the expansion joint, so that the stress concentration and the like are caused.
Description
Technical Field
The invention relates to a steam turbine, in particular to a reversing cylinder steam inlet structure of the steam turbine.
Background
After the high-temperature steam enters the air inlet of the reversing cylinder, thermal expansion can occur, and thermal stress is generated. The thermal deformation can be absorbed only through the expansion joint, so that the problems of stress concentration and the like caused by insufficient release of thermal stress are easily caused, and the safety and the stability of the unit operation are influenced. Therefore, the urgent requirements of solving the thermal expansion problem and reducing stress concentration when the reversing cylinder works are needed, and the original structure must be innovated.
Disclosure of Invention
The invention aims to provide a reversing cylinder air inlet pipe structure of a marine steam turbine, which can ensure smooth high-temperature steam, simultaneously transfer and release thermal expansion generated by a pipeline to a free end, block stress transfer between a cylinder and a reversing steam inlet flange and improve the safety and stability of a unit.
The purpose of the invention is realized by the following steps:
the invention relates to a reversing cylinder air inlet pipe structure of a marine steam turbine, which is characterized in that: the reversing steam turbine comprises a cylinder, a reversing steam inlet flange, a reversing cylinder and a reversing steam turbine steam inlet pipe, wherein the reversing steam inlet flange is fixed on the cylinder, one end of the reversing steam turbine steam inlet pipe is fixed with the reversing steam inlet flange, and the other end of the reversing steam turbine steam inlet pipe is sleeved into a steam inlet of the reversing cylinder.
The present invention may further comprise:
1. the reversing turbine steam inlet pipe is sleeved into one end of the reversing cylinder steam inlet to freely and movably expand.
2. And one end of the reversing turbine steam inlet pipe fixed with the reversing steam inlet flange is welded and fixed with the reversing steam inlet flange.
The invention has the advantages that: the structure of the invention solves the problems that the original marine reversing cylinder can generate thermal expansion and thermal stress, and the thermal deformation can be absorbed only through the expansion joint, so that the stress concentration and the like are caused.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an assembly view of the intake manifold and the reversing cylinder of the present invention;
FIG. 3 is an assembly view of the steam inlet pipe and the reverse steam inlet flange of the present invention.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
with reference to fig. 1 to 3, the embodiment of the present invention provides a novel marine reversing turbine steam inlet pipe structure, which includes a reversing steam inlet flange 1, a reversing turbine steam inlet pipe 2, a reversing cylinder 3, and a cylinder 4. The reversing steam inlet flange 1 is arranged at the lower half of the steam turbine and fixed with the cylinder 4, one end of a reversing steam turbine steam inlet pipe 2 is firstly sleeved into a steam inlet of a reversing cylinder 3 (combined with a figure 2), and welding is not carried out, so that the position can be flexibly adjusted. And welding the other end of the reversing turbine steam inlet pipe 2 with the reversing steam inlet flange port 1 on site (combining with the figure 3). One end of the steam inlet pipe of the reversing turbine is fixed, and the other end of the steam inlet pipe can freely and movably expand. When high-temperature steam enters the steam pipeline to do work, the generated thermal expansion and thermal deformation are transmitted through the steam inlet pipe 2 of the reversing turbine, and the thermal expansion amount can be freely released without being continuously transmitted due to the fact that the thermal expansion amount and the steam inlet 3 of the reversing cylinder are free ends, stress concentration is avoided, and safety and reliability of unit operation are guaranteed.
The invention relates to a related technical characteristic of a steam inlet pipe structure of a reversing turbine for a ship, which comprises the following steps:
1. a non-fixed air inlet pipe is adopted, and an air inlet is arranged at the lower half of the cylinder, so that the air inlet pipe and the reversing cylinder can be conveniently installed;
2. one end of a steam inlet pipe of the reversing steam turbine is sleeved into a steam inlet of a reversing cylinder, and the reversing steam turbine is not fixed, so that the angle and the position of the reversing steam turbine can be flexibly adjusted, and the leakage of steam is prevented.
3. The other end of the steam inlet pipe of the reversing turbine is welded with the reversing steam inlet flange port on site, so that the accuracy of site installation is ensured, the structure is firmer, and the welding is more convenient;
4. when high-temperature steam enters the reversing cylinder, the thermal expansion generated by the steam inlet pipe can be transferred and released to the free end.
5. Because the free end is not connected with the reversing cylinder, the stress transmission between the cylinder and the reversing steam inlet flange is blocked, the vibration reduction effect is achieved, and the safety and the stability of the unit are improved.
Claims (3)
1. The utility model provides a marine steam turbine cylinder intake pipe structure of backing a car which characterized by: the reversing steam turbine comprises a cylinder, a reversing steam inlet flange, a reversing cylinder and a reversing steam turbine steam inlet pipe, wherein the reversing steam inlet flange is fixed on the cylinder, one end of the reversing steam turbine steam inlet pipe is fixed with the reversing steam inlet flange, and the other end of the reversing steam turbine steam inlet pipe is sleeved into a steam inlet of the reversing cylinder.
2. The air inlet pipe structure of the reversing cylinder of the marine steam turbine as claimed in claim 1, wherein: the reversing turbine steam inlet pipe is sleeved into one end of the reversing cylinder steam inlet to freely and movably expand.
3. The air inlet pipe structure of the reversing cylinder of the marine steam turbine as claimed in claim 1, wherein: and one end of the reversing turbine steam inlet pipe fixed with the reversing steam inlet flange is welded and fixed with the reversing steam inlet flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210229944.0A CN114542195A (en) | 2022-03-09 | 2022-03-09 | Reversing air cylinder air inlet pipe structure of marine steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210229944.0A CN114542195A (en) | 2022-03-09 | 2022-03-09 | Reversing air cylinder air inlet pipe structure of marine steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114542195A true CN114542195A (en) | 2022-05-27 |
Family
ID=81663124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210229944.0A Pending CN114542195A (en) | 2022-03-09 | 2022-03-09 | Reversing air cylinder air inlet pipe structure of marine steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114542195A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008274817A (en) * | 2007-04-27 | 2008-11-13 | Hitachi Ltd | Steam turbine cylinder communication pipe |
| CN202900332U (en) * | 2012-09-24 | 2013-04-24 | 湖北江汉重工有限公司 | Turbine air cylinder casting assembly |
| CN109139136A (en) * | 2018-09-25 | 2019-01-04 | 中国船舶重工集团公司第七0三研究所 | A kind of steam turbine astern casing steam inlet pipe fixed structure |
| JP2019199853A (en) * | 2018-05-18 | 2019-11-21 | カルソニックカンセイ株式会社 | Turbine housing |
| CN112127955A (en) * | 2020-10-22 | 2020-12-25 | 中国船舶重工集团公司第七0四研究所 | Cylinder structure with built-in steam seal pipeline and steam seal pressure regulator |
| CN113550797A (en) * | 2021-08-06 | 2021-10-26 | 山西兆光发电有限责任公司 | Steam turbine steam guide pipe flange sealing device |
-
2022
- 2022-03-09 CN CN202210229944.0A patent/CN114542195A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008274817A (en) * | 2007-04-27 | 2008-11-13 | Hitachi Ltd | Steam turbine cylinder communication pipe |
| CN202900332U (en) * | 2012-09-24 | 2013-04-24 | 湖北江汉重工有限公司 | Turbine air cylinder casting assembly |
| JP2019199853A (en) * | 2018-05-18 | 2019-11-21 | カルソニックカンセイ株式会社 | Turbine housing |
| CN109139136A (en) * | 2018-09-25 | 2019-01-04 | 中国船舶重工集团公司第七0三研究所 | A kind of steam turbine astern casing steam inlet pipe fixed structure |
| CN112127955A (en) * | 2020-10-22 | 2020-12-25 | 中国船舶重工集团公司第七0四研究所 | Cylinder structure with built-in steam seal pipeline and steam seal pressure regulator |
| CN113550797A (en) * | 2021-08-06 | 2021-10-26 | 山西兆光发电有限责任公司 | Steam turbine steam guide pipe flange sealing device |
Non-Patent Citations (2)
| Title |
|---|
| 张锡德;戴广来;邵士铭;晁伟辉;: "管道柔性设计对合成气压缩机汽轮机振动的影响", 化工设备与管道, no. 02 * |
| 赵显国;陆象波;: "汽轮机差胀过大的原因分析及改进措施", 湖南电力, no. 06 * |
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