CN114508392B - High-pressure steam inlet chamber structure of steam turbine - Google Patents
High-pressure steam inlet chamber structure of steam turbine Download PDFInfo
- Publication number
- CN114508392B CN114508392B CN202111634572.1A CN202111634572A CN114508392B CN 114508392 B CN114508392 B CN 114508392B CN 202111634572 A CN202111634572 A CN 202111634572A CN 114508392 B CN114508392 B CN 114508392B
- Authority
- CN
- China
- Prior art keywords
- steam
- annular chamber
- guide
- chamber
- flow
- 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.)
- Active
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a high-pressure steam inlet chamber structure of a steam turbine, which comprises steam inlet channels, transition chambers and annular chambers, wherein the steam inlet channels are communicated with the annular chambers through the transition chambers, the number of the steam inlet channels and the transition chambers is four, and the four steam inlet channels are symmetrically arranged; a deflector is arranged at the downstream of each transition chamber to guide partial steam flow to the middle part of the annular chamber; two guide cones are arranged at two ends of the annular cavity, the guide cones are arranged in the guide direction of the guide plate, and the guide cones are provided with circular arc sections to enable the steam flow at two sides of the guide cones to turn. By adopting the high-pressure steam inlet chamber structure of the steam turbine, the uniformity of steam flow in the chamber can be effectively improved, and the flow loss in the chamber can be reduced.
Description
Technical Field
The invention relates to a high-pressure steam inlet chamber structure of a steam turbine, and belongs to the technical field of steam turbines.
Background
The demand of the modern society for energy is continuously increasing, and the comprehensive utilization of the energy is also getting more attention. As a steam turbine of the important power equipment in the modern country, improving the economy of the steam turbine has significant meaning for saving energy. Along with the change of economic situation, the demand for the improvement of the old machine set is urgent, and the improvement and the technical innovation of the steam inlet chamber of the steam turbine are also one of the important contents.
After the traditional high-pressure steam inlet chamber steam flows into the annular chamber from four steam inlet pipelines behind the valve, the steam flows downwards and fills the whole chamber; the direction of flow of the vapor is then changed from radial to axial into the downstream axial stage of the high pressure cylinder. After the steam of the traditional high-pressure steam inlet chamber enters the steam inlet pipeline through the valve, the steam enters an annular cavity formed by the shaft end steam seal body and the high-pressure inner cylinder through the transition cavity, and finally enters the downstream stationary blade row and the moving blade row. Referring to fig. 1, the steam inlet mode has two main disadvantages, namely, after the steam flows in the four steam inlet pipelines enter the annular cavity through the annular cavity, the four steam inlet pipelines are mutually doped in the annular cavity to form larger steam flow collision and strong torsion, and larger energy loss is formed in the cavity; on the other hand, the four steam inlet pipe steam flows pass through the transition chamber to form steam flow collision in the annular chamber and then are mixed, and directly enter the downstream axial flow stage to serve as a pneumatic boundary condition of the downstream axial flow stage. That is, the aerodynamic boundary condition that the outlet face of the steam inlet chamber acts as a downstream axial flow has the problems of uneven steam flow and large steam flow angle distribution span, resulting in poor steam flow uniformity and stability of the axial flow stage inlet. Meanwhile, due to the strong collision of the steam flow at the outlet of the annular chamber, the steam flow forms vortex when entering the downstream blade row, so that the uneven discharge of the blades into the steam flow at the outlet causes high loss, the pneumatic loss of the blade row is increased, the work is influenced, and the traditional steam inlet chamber has the technical problems of high total pressure loss of the steam inlet and low secondary efficiency connected with the steam inlet chamber.
Disclosure of Invention
The invention aims at: aiming at the problems, the invention provides a high-pressure steam inlet chamber structure of a steam turbine, which can effectively improve the uniformity of steam flow in a chamber and reduce the flow loss in the chamber.
The technical scheme adopted by the invention is as follows:
the high-pressure steam inlet chamber structure of the steam turbine comprises steam inlet channels, transition chambers and annular chambers, wherein the steam inlet channels are communicated with the annular chambers through the transition chambers, the number of the steam inlet channels and the transition chambers is four, and the four steam inlet channels are symmetrically arranged;
a deflector is arranged at the downstream of each transition chamber to guide partial steam flow to the middle part of the annular chamber; two guide cones are arranged at two ends of the annular cavity, the guide cones are arranged in the guide direction of the guide plate, and the guide cones are provided with circular arc sections to enable the steam flow at two sides of the guide cones to turn.
In the invention, partial steam flow is guided to the middle part of the annular chamber by arranging the guide plate, so that the steam flow is more uniformly distributed in the annular chamber, the partial steam flow speed in the annular chamber is reduced, and the energy loss when the steam flow is changed from radial to axial is reduced; the circular arc section of the guide cone is used for steering the steam flow, so that the direct collision of opposite upper and lower half steam flows is avoided, the torsion of the steam flow in the annular cavity is reduced, the stability of the steam flow in the steam inlet cavity is improved, and the energy loss in the cavity is reduced; the guide plate and the guide cone jointly reduce the interaction between the steam flows entering the annular cavity from the four steam inlet pipes, reduce the mixing of the steam flows in the annular cavity, ensure that the flow of the steam flows in the annular cavity is more orderly, and reduce the energy loss in the cavity; the flow guide plate and the flow guide cone jointly enable the distribution of the flow velocity and the angle at the outlet of the steam inlet cavity to be more uniform in the circumferential direction, so that the flow guide plate and the flow guide cone are better matched with the downstream blade row, and the loss in the downstream blade row is reduced.
Preferably, the baffle extends from downstream of the transition chamber to a horizontal mid-section of the annular chamber.
Preferably, the deflector comprises a straight deflector section facing the steam inlet channel and an arc deflector section extending towards the horizontal middle section of the annular chamber.
In the scheme, the flow of the steam inlet channel is guided by the flow guide straight section and divided into two parts, the flow guide arc section divides the flow, and part of the flow is guided to the middle part of the annular chamber, so that the uniformity of the flow in the annular chamber is improved.
Preferably, the diversion straight section coincides with the central line of the steam inlet channel.
In the scheme, the steam flow distribution can be more uniform.
Preferably, the vertical distance from the top of the straight diversion section to the top of the annular chamber is L1, and the height of the flow passage of the vertical symmetry plane of the annular chamber is L2, l1=δ×l2, wherein δ is 0.2-0.4.
Preferably, the circle center of the circle where the flow guide arc section is located on the vertical symmetrical plane of the annular chamber, the distance from the circle center to the center of the annular chamber is L4, and the height from the center to the top of the annular chamber is L3, so that l4=εxl3, wherein ε is 0.4-0.6.
Preferably, the included angle between the line of the end part of the flow guide arc section passing through the center of the annular chamber and the horizontal bisector of the annular chamber is alpha, and the alpha is 45-55 degrees.
In the scheme, through numerical simulation verification, the parameter setting can achieve the best effect.
Preferably, the ends of the guide straight section and the guide arc section are rounded.
In the scheme, when the flow is guided by rounding, the steam flow is smoother.
Preferably, the two guide cones are symmetrically arranged at two ends of the annular chamber.
In the scheme, the symmetrical arrangement can ensure uniform stability of steam flow in the annular chamber.
Preferably, the guide cone is symmetrically arranged along the horizontal bisector of the annular chamber.
Preferably, the arc segment extends from vertical to horizontal.
In the above scheme, the steam flow in the vertical direction is converted into the horizontal direction.
Preferably, the guide cone comprises a first cone surface and a second cone surface which are combined to form a V shape, and the first cone surface, the second cone surface and the annular chamber are in transition through an arc section.
In the scheme, the guide cone is in a transverse V shape, the upper half steam flow and the lower half steam flow are separated through the first conical surface and the second conical surface, mixing and torsion of the steam flow in the annular chamber are reduced, and the stability of the steam flow in the annular chamber is improved.
Preferably, the included angle between the first conical surface and the horizontal bisecting surface and the included angle between the second conical surface and the horizontal bisecting surface are beta, and the included angle is 5-15 degrees.
Preferably, the connection part of the first conical surface and the second conical surface is rounded.
Preferably, the guide cone extends from the outer ring to the inner ring of the annular chamber, and the guide cone does not partition the annular chamber.
The working principle of the invention is as follows: after the steam flow enters the annular chamber from the steam inlet channel, the guide plate divides the steam flow into two parts, and the steam flow close to the outer wall surface is guided to the middle part of the annular chamber, so that the uniformity of the steam flow in the annular chamber is improved; the circular arc section in the guide cone converts the steam flow direction near the bisection surface from vertical to horizontal, the first conical surface and the second conical surface separate the upper half steam flow and the lower half steam flow, so that the mixing and torsion of the steam flow in the annular chamber are reduced, and the stability of the steam flow in the annular chamber is improved; the energy loss in the steam inlet cavity is remarkably reduced, the speed and the angle distribution of the steam flow at the outlet of the steam inlet cavity are more uniform, the steam flow can be better matched with the downstream stationary blade row, and the efficiency of the downstream order is improved.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. by arranging the guide plate to guide part of the steam flow to the middle part of the annular chamber, the steam flow can be distributed more uniformly in the annular chamber, the local steam flow speed in the annular chamber is reduced, and the energy loss when the steam flow is changed from radial to axial is reduced;
2. the airflow is turned through the guide cone, so that the direct collision of opposite upper and lower half airflow is avoided, the torsion of the airflow in the annular cavity is reduced, the stability of the airflow in the annular cavity is improved, and the energy loss in the cavity is reduced;
3. the guide plate and the guide cone jointly reduce the interaction between the steam flows entering the annular cavity from the four steam inlet pipes, reduce the mixing of the steam flows in the annular cavity, ensure that the flow of the steam flows in the annular cavity is more orderly, and reduce the energy loss in the cavity;
4. the deflector and the guide cone jointly enable the distribution of the steam flow speed and the angle at the outlet of the annular chamber in the circumferential direction to be more uniform, so that the steam flow speed and the angle are better matched with the downstream blade row, and the loss in the downstream blade row is reduced.
Drawings
The invention will now be described by way of example and with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of a prior art high pressure inlet plenum structure and flow field;
FIG. 2 is a schematic view of a high pressure inlet plenum structure and flow field of the present invention;
FIG. 3 is a schematic view of a baffle structure;
fig. 4 is a schematic view of the structure of the guide cone.
The marks in the figure: the device comprises a 1-steam inlet channel, a 2-transition chamber, a 3-annular chamber, a 4-deflector, a 5-diversion cone, a 41-diversion straight section, a 42-diversion arc section, a 51-first conical surface, a 52-second conical surface and a 53-arc section.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification may be replaced by alternative features serving the same or equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Example 1
As shown in fig. 2, the high-pressure steam inlet chamber structure of the steam turbine of the embodiment comprises steam inlet channels 1, a transition chamber 2 and an annular chamber 3, wherein the steam inlet channels 1 are communicated with the annular chamber 3 through the transition chamber 2, the number of the steam inlet channels 1 and the transition chamber 2 is four, the four steam inlet channels 1 are symmetrically arranged, so that two steam inlet channels 1 are positioned at the upper part of a bisection plane, and the two steam inlet channels 1 are positioned at the lower part of the bisection plane;
a deflector 4 is arranged at the downstream of each transition chamber 2, and the deflector 4 extends from the downstream of the transition chamber 2 to the horizontal middle section of the annular chamber 3 to guide part of the steam flow to the middle part of the annular chamber 3; two diversion cones 5 positioned at two ends of the annular chamber 3 are symmetrically arranged in the annular chamber 3, the diversion cones 5 are symmetrically arranged along the horizontal bisection plane of the annular chamber 3, the diversion cones 5 are positioned in the guiding direction of the diversion plate 4, and the diversion cones 5 are provided with circular arc sections which extend vertically and horizontally so as to divert the steam flow at two sides of the diversion cones 5.
In the embodiment, partial steam flow is guided to the middle part of the annular chamber 3 by arranging the guide plate 4, so that the steam flow is more uniformly distributed in the annular chamber 3, the local steam flow speed in the annular chamber 3 is reduced, and the energy loss when the steam flow is changed from radial to axial is reduced; the circular arc section of the guide cone 5 is used for steering the steam flow, so that the direct collision of opposite upper and lower half steam flows is avoided, the torsion of the steam flow in the annular chamber 3 is reduced, the stability of the steam flow in the steam inlet chamber is improved, and the energy loss in the chamber is reduced.
As an alternative to the above embodiment, as shown in fig. 3, in other embodiments, the baffle 4 includes a straight guide section 41 facing the steam inlet channel 1 and a guide arc section 42 extending toward the horizontal middle section of the annular chamber 3, the steam flow of the steam inlet channel 1 is guided by the straight guide section 41 and divided into two parts, and the guide arc section 42 guides part of the steam flow to the middle section of the annular chamber 3, so as to improve the uniformity of the steam flow in the annular chamber 3.
As an alternative to the above-described embodiment, as shown in fig. 3, in other embodiments, the straight diversion section 41 coincides with the center line of the steam inlet channel 1, enabling a more uniform steam flow distribution.
As an alternative to the above embodiment, as shown in fig. 3, in other embodiments, the vertical distance from the top of the straight diversion section 41 to the top of the annular chamber 3 is L1, and the height of the flow passage of the vertical symmetry plane of the annular chamber 3 is L2, l1=δ×l2, where δ is 0.2-0.4; the circle center of the circle where the flow guide arc section 42 is located on the vertical symmetrical plane of the annular chamber 3, the distance from the circle center to the center of the annular chamber 3 is L4, the height from the center to the top of the annular chamber 3 is L3, and then L4=epsilon×L3, wherein epsilon is 0.4-0.6; the included angle between the line of the end part of the flow guide arc section 42 passing through the center of the annular chamber 3 and the horizontal bisector of the annular chamber 3 is alpha, and the alpha is 45-55 degrees; through numerical simulation verification, the parameter setting can achieve the best effect.
As an alternative to the above embodiments, in other embodiments, the ends of the straight guide sections 41 and the arc guide sections 42 are rounded, and the flow is smoother when the flow is guided by the rounding.
As an alternative to the above-described embodiment, as shown in fig. 4, in other embodiments, the flow cone 5 is symmetrically arranged along the horizontal bisecting plane of the annular chamber 3.
As an alternative to the above embodiment, as shown in fig. 4, in other embodiments, the flow guiding cone 5 includes a first cone surface 51 and a second cone surface 52 that are combined to form a "V" shape, and the first cone surface 51, the second cone surface and the annular chamber 3 are transited by an arc segment; the diversion cone 5 is in a transverse V shape, the upper half steam flow and the lower half steam flow are separated through the first conical surface 51 and the second conical surface 52, the mixing and torsion of the steam flow in the annular chamber 3 are reduced, and the stability of the steam flow in the annular chamber 3 is improved.
As an alternative to the above embodiment, as shown in fig. 4, in other embodiments, the angles between the first conical surface 51 and the second conical surface 52 and the horizontal bisecting plane are β, and β is 5 ° to 15 °.
As an alternative to the above embodiment, as shown in fig. 4, in other embodiments, the junction of the first conical surface 51 and the second conical surface 52 is rounded.
As an alternative to the above embodiment, as shown in fig. 4, in other embodiments, the flow cone 5 extends from the outer ring to the inner ring of the annular chamber 3, the flow cone 5 not obstructing the annular chamber 3.
In summary, by adopting the high-pressure steam inlet chamber structure of the steam turbine, the local steam flow speed in the annular chamber is obviously reduced, the mixing, collision and torsion of the steam flow are obviously reduced, and the pneumatic performance is greatly improved; the steam flow at the outlet of the annular chamber is more uniform and stable, and the efficiency of the downstream order is improved.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (6)
1. A steam turbine high-pressure steam inlet chamber structure is characterized in that: the device comprises steam inlet channels (1), transition chambers (2) and annular chambers (3), wherein the steam inlet channels (1) are communicated with the annular chambers (3) through the transition chambers (2), the number of the steam inlet channels (1) and the transition chambers (2) is four, and the four steam inlet channels (1) are symmetrically arranged; a deflector (4) is arranged at the downstream of each transition chamber (2) to guide partial steam flow to the middle part of the annular chamber (3); two guide cones (5) are arranged in the annular chamber (3) and positioned at two ends of the annular chamber (3), the guide cones (5) are positioned in the guide direction of the guide plate (4), and the guide cones (5) are provided with circular arc sections so as to enable the steam flow at two sides of the guide cones (5) to be turned;
the guide plate (4) comprises a guide straight section (41) facing the steam inlet channel (1) and a guide arc section (42) extending towards the horizontal middle section of the annular chamber (3);
the diversion straight section (41) coincides with the central line of the steam inlet channel (1);
the vertical distance from the top of the flow guiding straight section (41) to the top of the annular chamber (3) is L1, and the flow channel height of the vertical symmetry plane of the annular chamber (3) is L2, then L1=delta×L2, wherein delta is 0.2-0.4;
the circle center of the circle where the flow guide arc section (42) is located on the vertical symmetrical plane of the annular chamber (3), the distance from the circle center to the center of the annular chamber (3) is L4, the height from the center to the top of the annular chamber (3) is L3, and then L4=epsilon×L3, wherein epsilon is 0.4-0.6.
2. The high pressure inlet chamber structure of a steam turbine according to claim 1, wherein: the deflector (4) extends from downstream of the transition chamber (2) to the horizontal mid-section of the annular chamber (3).
3. The high pressure inlet chamber structure of a steam turbine according to claim 1, wherein: the included angle between the line of the end part of the flow guiding arc section (42) passing through the center of the annular chamber (3) and the horizontal bisection surface of the annular chamber (3) is alpha, and the alpha is 45-55 degrees.
4. The high pressure inlet chamber structure of a steam turbine according to claim 1, wherein: the diversion cone (5) is symmetrically arranged along the horizontal bisector of the annular chamber (3).
5. The high pressure inlet chamber structure of a steam turbine according to claim 1, wherein: the flow guide cone (5) comprises a first conical surface (51) and a second conical surface (52) which are combined to form a V shape, and the first conical surface (51), the second conical surface (52) and the annular chamber (3) are in transition through an arc section.
6. The high pressure inlet chamber structure of a steam turbine according to claim 5, wherein: the included angles between the first conical surface (51), the second conical surface (52) and the horizontal bisector surface are beta, and the beta is 5-15 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111634572.1A CN114508392B (en) | 2021-12-29 | 2021-12-29 | High-pressure steam inlet chamber structure of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111634572.1A CN114508392B (en) | 2021-12-29 | 2021-12-29 | High-pressure steam inlet chamber structure of steam turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114508392A CN114508392A (en) | 2022-05-17 |
| CN114508392B true CN114508392B (en) | 2023-07-18 |
Family
ID=81548620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111634572.1A Active CN114508392B (en) | 2021-12-29 | 2021-12-29 | High-pressure steam inlet chamber structure of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114508392B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6419448B1 (en) * | 2000-03-20 | 2002-07-16 | Jerzy A. Owczarek | Flow by-pass system for use in steam turbine exhaust hoods |
| EP2341215A2 (en) * | 2010-01-04 | 2011-07-06 | General Electric Company | Hollow steam guide diffuser having increased pressure recovery |
| JP2015194085A (en) * | 2014-03-31 | 2015-11-05 | 株式会社東芝 | steam turbine |
| CN105201568A (en) * | 2015-10-15 | 2015-12-30 | 哈尔滨汽轮机厂有限责任公司 | Low-pressure steam turboset with 360-degree volute casing admission low-pressure inner cylinder |
| CN106593546A (en) * | 2016-12-22 | 2017-04-26 | 东方电气集团东方汽轮机有限公司 | Turbine low-pressure steam admission mode and equipment |
| CN107965354A (en) * | 2017-11-24 | 2018-04-27 | 西安交通大学 | A kind of steam turbine is uniformly into vapour/filling device |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH484358A (en) * | 1968-02-15 | 1970-01-15 | Escher Wyss Ag | Exhaust housing of an axial turbo machine |
| JPH094401A (en) * | 1995-06-23 | 1997-01-07 | Mitsubishi Heavy Ind Ltd | Intermediate pressure stage structure of steam turbine |
| EP1068429B1 (en) * | 1998-04-06 | 2004-06-16 | Siemens Aktiengesellschaft | Steam turbine |
| US6609881B2 (en) * | 2001-11-15 | 2003-08-26 | General Electric Company | Steam turbine inlet and methods of retrofitting |
| JP4573020B2 (en) * | 2004-05-06 | 2010-11-04 | 株式会社日立プラントテクノロジー | Suction casing, suction flow path structure and fluid machine |
| JP2007255218A (en) * | 2006-03-20 | 2007-10-04 | Toshiba Corp | Steam turbine |
| DE102008000284A1 (en) * | 2007-03-02 | 2008-09-04 | Alstom Technology Ltd. | Power station steam turbine has inner housing of welded construction end forged or rolled steel blade roots |
| JP2017172383A (en) * | 2016-03-22 | 2017-09-28 | 株式会社東芝 | Steam turbine |
| JP6632510B2 (en) * | 2016-10-31 | 2020-01-22 | 三菱重工業株式会社 | Steam turbine exhaust chamber, flow guide for steam turbine exhaust chamber, and steam turbine |
| CN208010409U (en) * | 2018-01-15 | 2018-10-26 | 上海电气电站设备有限公司 | Between a kind of steam turbine mesolow cylinder without leaf channel |
| JP2019157680A (en) * | 2018-03-09 | 2019-09-19 | 三菱重工業株式会社 | Steam turbine device |
| EP3653850B1 (en) * | 2018-11-16 | 2021-09-29 | Doosan Skoda Power S.r.o. | Exhaust diffuser for a steam turbine and corresponding steam turbine |
| CN111520195B (en) * | 2020-04-03 | 2022-05-10 | 东方电气集团东方汽轮机有限公司 | Flow guide structure of low-pressure steam inlet chamber of steam turbine and parameter design method thereof |
| CN112922678B (en) * | 2021-02-03 | 2022-08-30 | 东方电气集团东方汽轮机有限公司 | Steam inlet chamber for axial steam outlet of steam turbine |
| CN113279825B (en) * | 2021-06-11 | 2022-04-12 | 武汉大学 | Design method of full-circumference steam inlet chamber of nuclear turbine and full-circumference steam inlet chamber |
-
2021
- 2021-12-29 CN CN202111634572.1A patent/CN114508392B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6419448B1 (en) * | 2000-03-20 | 2002-07-16 | Jerzy A. Owczarek | Flow by-pass system for use in steam turbine exhaust hoods |
| EP2341215A2 (en) * | 2010-01-04 | 2011-07-06 | General Electric Company | Hollow steam guide diffuser having increased pressure recovery |
| JP2015194085A (en) * | 2014-03-31 | 2015-11-05 | 株式会社東芝 | steam turbine |
| CN105201568A (en) * | 2015-10-15 | 2015-12-30 | 哈尔滨汽轮机厂有限责任公司 | Low-pressure steam turboset with 360-degree volute casing admission low-pressure inner cylinder |
| CN106593546A (en) * | 2016-12-22 | 2017-04-26 | 东方电气集团东方汽轮机有限公司 | Turbine low-pressure steam admission mode and equipment |
| CN107965354A (en) * | 2017-11-24 | 2018-04-27 | 西安交通大学 | A kind of steam turbine is uniformly into vapour/filling device |
Non-Patent Citations (2)
| Title |
|---|
| "V"型直接空冷凝汽器单元内部导流的数值研究;易文杰;阴继翔;郭政;李东青;;汽轮机技术(第04期);第19-21+26页 * |
| 汽轮机调节级后过渡腔室的CFD数值研究;赵洪羽;刘云锋;;汽轮机技术(第05期);第41-42+46页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114508392A (en) | 2022-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100465515C (en) | Diffuser for a gas turbine and gas turbine for energy generation | |
| CN111520195B (en) | Flow guide structure of low-pressure steam inlet chamber of steam turbine and parameter design method thereof | |
| CN103090601B (en) | Shunt and air conditioner with same | |
| CN102444476B (en) | Wave-shaped diffuser of gas turbine | |
| CN107965354B (en) | A kind of steam turbine is uniformly into vapour/filling device | |
| CN108425708B (en) | Combined vortex reducer structure | |
| CN108223386A (en) | A kind of large-scale bulb through-flow pump installation | |
| CN110206591A (en) | A kind of groove-type cooling air guiding device for turbine rotor blade gas supply | |
| WO2020177462A1 (en) | Ejector applicable for hydrogen fuel cell automobile system and using method therefor | |
| CN114508392B (en) | High-pressure steam inlet chamber structure of steam turbine | |
| CN111520751A (en) | Double-stage swirler and centrifugal nozzle integrated structure | |
| CN210819179U (en) | Gear forming grinding wheel with inner cooling structure | |
| CN103016425B (en) | Three-level multi-spray-pipe central ejector | |
| CN202304136U (en) | Shunt and air conditioner with same | |
| CN109139334A (en) | A kind of mixed-flow deviated splitter vane hydraulic turbine | |
| CN113294808A (en) | Air atomizing nozzle of combustion chamber of gas turbine | |
| CN209278051U (en) | Impulse turbine water distributor mix type nozzle mouth | |
| CN111535974A (en) | Low-water-head large-flow mixed-flow water turbine with double-inlet volute | |
| CN114508388B (en) | Double-exhaust combined steam valve flow guiding structure | |
| CN220828274U (en) | Mixed flow turbine structure suitable for medium power unit | |
| CN113566616A (en) | Vertical multi-inlet quenching heat exchanger applied to inlet fluid | |
| CN209293858U (en) | Steam turbine discharge guide ring and exhaust casing | |
| CN112360660A (en) | Long and short blade type reversible pump turbine | |
| CN114508394A (en) | Turbine steam extraction cavity structure | |
| CN105736076A (en) | Fluid director using exhaust leaving velocity loss of steam turbine |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |