CN111535876B - Regulating valve and nozzle set integrated structure of water supply pump steam turbine - Google Patents
Regulating valve and nozzle set integrated structure of water supply pump steam turbine Download PDFInfo
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- CN111535876B CN111535876B CN202010262590.0A CN202010262590A CN111535876B CN 111535876 B CN111535876 B CN 111535876B CN 202010262590 A CN202010262590 A CN 202010262590A CN 111535876 B CN111535876 B CN 111535876B
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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
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
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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
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
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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
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Abstract
The invention relates to the field of steam turbine structures, and aims to solve the problems that in a backpressure unit mainly based on heat supply in the prior art, the opening degree of a regulating valve of a water supply pump steam turbine is very small, and the valve rod is easy to vibrate and even break; the integrated structure comprises a gland, a rotating ring, a nozzle group and a gland body; the gland and the stationary blade holding ring are respectively provided with a steam runner fixed window, and the rotating ring is provided with a steam runner movable window; the center positions of the gland and the window on the stationary blade holding ring correspond, and in the rotating process of the rotating ring, the overlapping area of the steam flow channel movable window and the steam flow channel fixed window is gradually increased; the steam flow passage fixing window of the gland is communicated with the steam inlet chamber, and the steam flow passage fixing window of the stationary blade holding ring is communicated with the steam outlet of the cylinder. The invention has the advantages that asynchronous opening of each nozzle can be realized, and the problem of vibration and even breakage of the valve rod is avoided.
Description
Technical Field
The invention relates to the field of steam turbine structures, in particular to an integrated structure of a regulating valve and a nozzle group of a feed pump steam turbine.
Background
In the prior art, the generator of the backpressure unit mainly used for heat supply mainly acts on realizing energy balance when the heat supply changes into working conditions. In this type of unit, the admission of feed pump steam turbine generally adopts the host computer heat supply extraction that the parameter is higher (compare with conventional feed pump unit), and when main steam turbine load descends, because the needs of heat supply volume, heat supply pressure can not reduce, so feed pump steam turbine's admission pressure can not reduce yet, this moment, because main steam turbine load reduces, feed pump power greatly reduced, and feed pump steam turbine's admission pressure is the same with rated operating mode, then feed pump steam turbine's regulating valve aperture is very little, very easily take place valve rod vibration and even fracture.
Disclosure of Invention
The invention aims to provide an integrated structure of a regulating valve and a nozzle group of a water supply pump steam turbine, which aims to solve the problems that in a backpressure unit mainly based on heat supply in the prior art, the opening degree of the regulating valve of the water supply pump steam turbine is very small, and the valve rod is easy to vibrate and even break.
The embodiment of the invention is realized by the following steps:
a regulating valve and nozzle group integrated structure of a water feeding pump steam turbine is arranged between a cylinder steam inlet chamber and a nozzle movable blade; the static blade holding ring is connected to a cylinder handle, and the top of the static blade holding ring and the cylinder form a positioning sealing surface;
the integrated structure comprises a gland, a rotating ring, a nozzle group and a gland casing; the rotating ring is rotatably matched between the gland and the static blade holding ring; the nozzle group is arranged in a static blade groove of the static blade holding ring; the steam seal body is connected to one side of the static blade carrier ring, which is close to the nozzle movable blade, and is matched and connected with the nozzle movable blade;
the gland and the stationary blade holding ring are respectively provided with a steam runner fixed window, and the rotating ring is provided with a steam runner movable window; the center positions of the gland and the window on the stationary blade holding ring correspond, the rotating ring can rotate from the valve full-closed position to the valve full-open position, and in the rotating process, the overlapping area of the steam flow channel movable window and the steam flow channel fixed window is gradually increased; the steam flow passage fixing window of the gland is communicated with the steam inlet chamber, and the steam flow passage fixing window of the stationary blade holding ring is communicated with the steam outlet of the cylinder.
In the water supply pump steam turbine regulating valve and the nozzle set integrated structure in the scheme, the nozzle set is integrated and matched in the static blade groove of the static blade ring, and the rotating ring of the regulating valve part rotates to adjust the valve from the fully closed position to the fully open position of the valve, so that the opening of a steam channel is adjusted.
In one embodiment:
the gland and the static blade holding ring are respectively provided with a plurality of subareas corresponding to each nozzle of the nozzle group, the subareas are distributed along the circumferential direction of the static blade holding ring, the gland and the static blade holding ring are respectively provided with a steam flow channel fixed window in each subarea, and the rotating ring is respectively provided with a steam flow channel movable window in each subarea; the included angles from the front edge of the steam flow channel movable window in each partition to the rear edge of the steam flow channel fixed window are not completely the same, so that the steam flow channels of each partition are asynchronously communicated; the front circumferential angles from the front edge of the steam flow channel movable window in each subarea to the front edge of the steam flow channel fixed window are not completely the same, the rotation angle of the rotating ring moving from the fully closed position of the valve to the fully opened position of the valve is not smaller than the maximum front circumferential angle, the included angle between the front edge and the rear edge of each steam flow channel movable window is not smaller than the corresponding steam flow channel fixed window, and each steam flow channel movable window completely covers the corresponding steam flow channel fixed window under the condition that the rotating ring rotates to the fully opened position of the valve, so that the steam flow channels in each subarea are asynchronously and fully opened.
The multi-partition arrangement is respectively used for controlling the opening and closing of the nozzles of the nozzle group, and the arrangement of the angles which are not completely the same enables the turning disc to rotate from the fully closed state of the valve to the fully open state of the valve, and the connection of the nozzles is carried out before (namely asynchronous connection), and the time for the nozzles to be fully opened is also carried out before (asynchronous full opening). The included angle between the front edge and the rear edge of each steam flow channel movable window can prevent the rotating ring from rotating over the head to influence the full opening of partial nozzles, and each steam flow channel movable window completely covers the corresponding steam flow channel fixed window when the rotating ring reaches the full opening position of the valve, so that the nozzles are in the full opening state.
In one embodiment:
the rear circumferential angle between the rear edge of the steam flow channel movable window in each partition and the rear edge of the steam flow channel fixed window is equal to the maximum rotation angle of the rotating ring, so that when the rotating ring rotates to the full-open position of the valve, the rear edge of the steam flow channel movable window is just overlapped with the rear edge of the steam flow channel fixed window;
the angle value of the front circumferential angle between the front edge of the steam flow channel movable window in each partition and the front edge of the steam flow channel fixed window forms an arithmetic progression; the included angles between the front edge and the rear edge of the steam flow channel fixing window in each partition are respectively equal and smaller than the minimum front circumferential angle.
In one embodiment:
the nozzle group has four nozzles, and the corresponding subareas are also four.
In one embodiment:
the four sectors are located within the upper semicircle of the stationary blade carrier ring.
In one embodiment:
the rotating ring has a rotating handle extending out of the outer periphery of the stationary blade holding ring along the circumferential direction.
In one embodiment:
the static blade groove of the static blade holding ring is a T-shaped groove.
In one embodiment:
the root of the stationary blade ring extends toward the steam intake chamber and is connected to the cylinder handle.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a regulating valve and a nozzle set integrated structure of a water supply pump steam turbine according to an embodiment of the present invention installed between a cylinder steam inlet chamber and a nozzle rotor blade;
FIG. 2 is an enlarged view at M of FIG. 1 (the line outside the integrated structure is hidden and not shown);
FIG. 3 is a side view of a unitary structure according to an embodiment of the present invention.
Icon: the structure comprises a water supply pump steam turbine regulating valve and nozzle group integrated structure 10, nozzle movable blades 20, a cylinder 30, a cylinder handle 31, a steam inlet chamber 40, a bolt S1, a steam outlet 41, a rotating ring 1, a gland 2, a static blade holding ring 3, a steam seal body 4, a nozzle group 6, a static blade groove 9, a rotating handle 11, a root 32, a valve full-close position Y1, a valve full-open position Y2, a first subarea Q1, a second subarea Q2, a third subarea Q3, a fourth subarea Q4, a front edge F1 and a rear edge F2.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1, 2 and 3, the present embodiment provides a regulating valve and nozzle set integrated structure 10 of a water supply pump turbine, which is installed between an inlet chamber 40 of a cylinder 30 and a nozzle moving blade 20; the root 32 of the stationary blade carrier ring 3 extends toward the intake chamber 40 and is connected to the cylinder grip 31 by a bolt S1 (shown in brief), and the top of the stationary blade carrier ring 3 forms a positioning seal surface with the cylinder 30.
The integrated structure 10 in the scheme comprises a gland 2, a rotating ring 1, a nozzle group 6 and a gland casing 4; the gland 2 is connected to one side of the static blade holding ring 3 close to the steam inlet chamber 40 of the cylinder 30, the rotating ring 1 is rotatably matched between the gland 2 and the static blade holding ring 3, and the connection of all the parts can be realized by adopting bolts S1; the nozzle group 6 is installed in a stationary blade groove 9 of the stationary blade carrier ring 3, and optionally, the stationary blade groove 9 of the stationary blade carrier ring 3 is a T-shaped groove; the gland sealing body 4 is connected to one side of the static blade ring 3 close to the nozzle movable blade 20 and is matched and connected with the nozzle movable blade 20; in this embodiment, in order to facilitate the rotation of the rotating ring 1, the rotating ring 1 has a rotating shaft 11 that extends in the circumferential direction beyond the outer periphery of the stationary blade ring 3.
The gland 2 and the stationary blade ring 3 are respectively provided with a steam flow passage fixed window (shown in J1-J4), and the rotating ring 1 is provided with a steam flow passage movable window (shown in K1-K4); the center positions of the gland 2 and the window on the stationary blade holding ring 3 correspond, the rotating ring 1 can rotate from the valve fully-closed position Y1 to the valve fully-opened position Y2, and in the rotating process, the overlapping area of the steam flow channel movable window and the steam flow channel fixed window is gradually increased; the steam flow passage fixing window of the gland 2 is communicated with the steam inlet chamber 40, and the steam flow passage fixing window of the stationary blade holding ring 3 is communicated with the steam outlet 41 of the cylinder 30. Thus, the rotation of the rotating ring 1 can adjust the opening and closing and the size of the steam flow passage between the steam inlet chamber 40 and the nozzle group 6.
In the water supply pump steam turbine regulating valve and nozzle set integrated structure 10, the nozzle set 6 is integrally matched in the stationary blade groove 9 of the stationary blade holding ring 3, and the valve can be regulated from a valve full-closed position Y1 to a valve full-open position Y2 through rotation of the rotating ring 1 of the regulating valve part, so that the opening degree of a steam channel is regulated.
In the present embodiment, the nozzle group 6 includes a plurality of nozzles, and the gland 2 and the stationary blade ring 3 have a plurality of partitions respectively corresponding to the respective nozzles of the nozzle group 6, the plurality of partitions being distributed along the circumferential direction of the stationary blade ring 3; in the present embodiment, the nozzle group 6 has four nozzles, and the corresponding partitions are four, and are defined as partition one Q1, partition two Q2, partition three Q3, and partition four Q4. Optionally, the four sectors are located within the upper semicircle of the stationary blade ring 3. The gland 2 and the static blade ring 3 are respectively provided with a steam flow passage fixed window J1, J2, J3 and J4 in each subarea, and the rotating ring 1 is respectively provided with a steam flow passage movable window K1, K2, K3 and K4 in each subarea; the included angles from the front edge F1 of the steam flow channel movable window in each partition to the rear edge F2 of the steam flow channel fixed window are not completely the same, so that the steam flow channels of each partition are asynchronously communicated; the front circumferential angles A1, A2, A3 and A4 from the front edge F1 of the steam runner movable window in each partition to the front edge F1 of the steam runner fixed window are not completely the same, the rotation angle of the rotating ring 1 moving from the valve full-close position Y1 to the valve full-open position Y2 is not smaller than the maximum front circumferential angle, the included angle between the front edge F1 and the rear edge F2 of each steam runner movable window is not smaller than the corresponding steam runner fixed window, and each steam runner movable window completely covers the corresponding steam runner fixed window in the state that the rotating ring 1 rotates to the valve full-open position Y2, so that the steam runners of each partition are asynchronously and fully opened. It should be noted that the term "leading edge" and "trailing edge" as used herein are relative terms, wherein the "leading edge" refers to the forward edge of the steam flow path movable window/steam flow path fixed window in the direction from the valve fully open position Y2 to the valve fully closed position Y1 along the rotating ring 1; correspondingly, the "rear edge" refers to the rear side of the steam flow path movable window/steam flow path fixed window in the direction from the valve full open position Y2 to the valve full closed position Y1 along the rotation ring 1; the steam flow channel movable window/the steam flow channel fixed window are both arranged into a partial circular ring shape extending circumferentially at a certain angle, and of course, the four corners of the partial circular ring shape can be subjected to fillet smooth processing.
The multi-partition arrangement is respectively used for controlling the opening and closing of the nozzles of the nozzle group 6, and the nozzles can be sequentially switched on (asynchronous switching-on) and the time for the nozzles to be fully opened (asynchronous full opening) in the process that the rotating disc rotates from the fully closed state of the valve to the fully opened state of the valve by setting the included angles which are not completely the same. Wherein the contained angle setting between the leading edge F1 and the trailing edge F2 of each steam runner activity window can avoid the rotation ring 1 to turn over the head and influence the full open of some nozzles, ensures when the rotation ring 1 reaches valve full open position Y2, and each steam runner activity window all covers corresponding steam runner fixed window completely to make the nozzle be in full open state.
In an arrangement of this embodiment, please refer to fig. 3 mainly, a rear circumferential angle between the rear edge F2 of the steam flow channel movable window in each partition and the rear edge F2 of the steam flow channel fixed window is equal to the maximum rotation angle B of the rotating ring 1 (as shown in the figure, B1 ═ B2 ═ B3 ═ B4 ═ 23 °) so that when the rotating ring 1 rotates to the valve full-open position Y2, the rear edge F2 of the steam flow channel movable window just coincides with the rear edge F2 of the steam flow channel fixed window; the angle value of the front circumferential angle between the front edge F1 of the steam flow channel movable window in each partition and the front edge F1 of the steam flow channel fixed window is in an equal difference array (as shown, the angle values are set to A1-14 degrees, A2-17 degrees, A3-20 degrees, A4-23 degrees, and the tolerance is 3 degrees); the included angle between the leading edge F1 and the trailing edge F2 of the steam flow channel fixing window in each partition is equal and smaller than the smallest front circumferential angle (as shown, C1 ═ C2 ═ C3 ═ C4 ═ 10 °).
With the arrangement, after the rotating ring 1 rotates 4 degrees from the valve full-closed position Y1, the steam flow channel movable window and the steam flow channel fixed window in the first subarea Q1 start to intersect, and the steam flow channel of the first subarea Q1 is communicated and gradually increased;
the rotating ring 1 continues to rotate for 3 degrees, the steam flow channel movable window and the steam flow channel fixed window in the partition II Q2 start to intersect, and the steam flow channel of the partition II Q2 is communicated and gradually increased together with the steam flow channel of the partition I Q1;
the rotating ring 1 continues to rotate for 3 degrees, the steam flow channel movable window in the partition three Q3 begins to be intersected with the steam flow channel fixed window, the steam flow channel of the partition three Q3 is communicated and gradually increased together with the steam flow channels of the partition one Q1 and the partition two Q2;
the rotating ring 1 continues to rotate for 3 degrees, the steam flow channel movable window in the partition four Q4 begins to be intersected with the steam flow channel fixed window, the steam flow channel of the partition four Q4 is communicated and gradually increased together with the steam flow channels of the partition one Q1, the partition two Q2 and the partition three Q3;
after the rotating ring 1 continues to rotate for 1 degree, the front edge F1 of the steam flow passage movable window of the first partition Q1 is overlapped with the front edge F1 of the steam flow passage fixed window, the steam flow passage movable window completely covers the steam flow passage fixed window, and the first partition Q1 is fully opened; at this time, other subareas are not fully opened;
the rotating ring 1 is continuously rotated, but the second subarea Q2, the third subarea Q3 and the fourth subarea Q4 are sequentially fully opened, and because the included angle between the front edge F1 and the rear edge F2 of the steam flow channel movable window of the first subarea Q1, the second subarea Q2 and the third subarea Q3 is larger than that of the steam flow channel fixed window, the continuous rotation of the subareas which are firstly in a fully opened state can still ensure that the steam flow channel movable window completely covers the steam flow channel fixed window and is kept fully opened;
when the rotating ring 1 rotates by 23 degrees to reach the full-open valve position Y2, the four subareas reach the full-open valve state.
Therefore, the structure in the scheme can ensure that all the subareas are sequentially connected in the process of rotating the rotating ring 1 from the fully closed position to the fully open position and are respectively and gradually opened from the connection to the fully open state, can realize the sequential control of all the nozzles, and can solve the problem of vibration of the regulating valve rod of the water supply pump steam turbine under high pressure and small flow.
Of course, if other control requirements need to be realized, the values of the angles of the steam flow channel movable window and the steam flow channel fixed window of each partition can also be designed and realized.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a feed pump steam turbine governing valve and nozzle group integral type structure which characterized in that:
the regulating valve and nozzle group integrated structure is arranged between the cylinder steam inlet chamber and the nozzle movable blade; the static blade holding ring is connected to a cylinder handle, and the top of the static blade holding ring and the cylinder form a positioning sealing surface;
the integrated structure comprises a gland, a rotating ring, a nozzle group and a gland casing; the rotating ring is rotatably matched between the gland and the static blade holding ring; the nozzle group is arranged in a static blade groove of the static blade holding ring; the steam seal body is connected to one side of the static blade carrier ring, which is close to the nozzle movable blade, and is matched and connected with the nozzle movable blade;
the gland and the stationary blade holding ring are respectively provided with a steam runner fixed window, and the rotating ring is provided with a steam runner movable window; the center positions of the gland and the window on the stationary blade holding ring correspond, the rotating ring can rotate from the valve full-closed position to the valve full-open position, and in the rotating process, the overlapping area of the steam flow channel movable window and the steam flow channel fixed window is gradually increased; the steam flow passage fixing window of the gland is communicated with the steam inlet chamber, and the steam flow passage fixing window of the stationary blade holding ring is communicated with the steam outlet of the cylinder;
the gland and the static blade holding ring are respectively provided with a plurality of subareas corresponding to each nozzle of the nozzle group, the subareas are distributed along the circumferential direction of the static blade holding ring, the gland and the static blade holding ring are respectively provided with a steam flow channel fixed window in each subarea, and the rotating ring is respectively provided with a steam flow channel movable window in each subarea; the included angles from the front edge of the steam flow channel movable window in each partition to the rear edge of the steam flow channel fixed window are not completely the same, so that the steam flow channels of each partition are asynchronously communicated; the front circumferential angles from the front edge of the steam flow channel movable window in each subarea to the front edge of the steam flow channel fixed window are not completely the same, the rotation angle of the rotating ring moving from the fully closed position of the valve to the fully opened position of the valve is not smaller than the maximum front circumferential angle, the included angle between the front edge and the rear edge of each steam flow channel movable window is not smaller than the corresponding steam flow channel fixed window, and each steam flow channel movable window completely covers the corresponding steam flow channel fixed window under the condition that the rotating ring rotates to the fully opened position of the valve, so that the steam flow channels in each subarea are asynchronously and fully opened.
2. The feed pump turbine regulating valve and nozzle block integrated structure as claimed in claim 1, wherein:
the rear circumferential angle between the rear edge of the steam flow channel movable window in each partition and the rear edge of the steam flow channel fixed window is equal to the maximum rotation angle of the rotating ring, so that when the rotating ring rotates to the full-open position of the valve, the rear edge of the steam flow channel movable window is just overlapped with the rear edge of the steam flow channel fixed window;
the angle value of the front circumferential angle between the front edge of the steam flow channel movable window in each partition and the front edge of the steam flow channel fixed window forms an arithmetic progression; the included angles between the front edge and the rear edge of the steam flow channel fixing window in each partition are respectively equal and smaller than the minimum front circumferential angle.
3. The feed pump turbine regulating valve and nozzle block integrated structure as claimed in claim 2, wherein:
the nozzle group has four nozzles, and the corresponding subareas are also four.
4. The feed pump turbine regulating valve and nozzle block integrated structure as claimed in claim 3, wherein:
the four sectors are located within the upper semicircle of the stationary blade carrier ring.
5. The feed pump turbine regulating valve and nozzle block integrated structure as claimed in claim 1, wherein:
the rotating ring has a rotating handle extending out of the outer periphery of the stationary blade holding ring along the circumferential direction.
6. The feed pump turbine regulating valve and nozzle block integrated structure as claimed in claim 1, wherein:
the static blade groove of the static blade holding ring is a T-shaped groove.
7. The feed pump turbine regulating valve and nozzle block integrated structure as claimed in claim 1, wherein:
the root of the stationary blade ring extends toward the steam intake chamber and is connected to the cylinder handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010262590.0A CN111535876B (en) | 2020-04-07 | 2020-04-07 | Regulating valve and nozzle set integrated structure of water supply pump steam turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010262590.0A CN111535876B (en) | 2020-04-07 | 2020-04-07 | Regulating valve and nozzle set integrated structure of water supply pump steam turbine |
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| CN111535876B true CN111535876B (en) | 2022-05-10 |
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| CN114278391B (en) * | 2021-12-29 | 2024-04-19 | 河北国源电气股份有限公司 | Stator blade group for turbine with tight fit installation |
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| US793540A (en) * | 1905-02-13 | 1905-06-27 | Elmer K Purvis | Steam-turbine. |
| US1894117A (en) * | 1931-10-15 | 1933-01-10 | Gen Electric | Elastic fluid turbine |
| JPS56165704A (en) * | 1980-05-22 | 1981-12-19 | Toshiba Corp | Rotary disc valve |
| JPS597707A (en) * | 1982-07-07 | 1984-01-14 | Hitachi Ltd | Extraction control valve device |
| US5269648A (en) * | 1991-04-08 | 1993-12-14 | Asea Brown Boveri Ltd. | Arrangement for controlling the flow cross section of a turbomachine |
| US5409351A (en) * | 1992-05-04 | 1995-04-25 | Abb Patent Gmbh | Steam turbine with a rotary slide |
| CN109779700A (en) * | 2019-01-29 | 2019-05-21 | 东方电气集团东方汽轮机有限公司 | Nozzle of steam turbine based on governing stage static blade angle differentiation matches vapour method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6123601Y2 (en) * | 1980-10-22 | 1986-07-15 | ||
| WO2004005675A2 (en) * | 2002-07-04 | 2004-01-15 | Siemens Aktiengesellschaft | Method and device for regulating the rotational speed of a turbine connected to an electric power supply mains by means of a generator |
| US8573929B2 (en) * | 2010-04-30 | 2013-11-05 | Honeywell International Inc. | Turbocharger with turbine nozzle vanes and an annular rotary bypass valve |
| EP2837770B8 (en) * | 2013-08-14 | 2016-09-14 | General Electric Technology GmbH | Full arc admission steam turbine |
| CN103742206B (en) * | 2014-01-24 | 2015-03-25 | 山东青能动力股份有限公司 | Steam turbine and through-flow area adjusting mechanism thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US707727A (en) * | 1901-05-10 | 1902-08-26 | Richard Schulz | Steam-turbine. |
| US793540A (en) * | 1905-02-13 | 1905-06-27 | Elmer K Purvis | Steam-turbine. |
| US1894117A (en) * | 1931-10-15 | 1933-01-10 | Gen Electric | Elastic fluid turbine |
| JPS56165704A (en) * | 1980-05-22 | 1981-12-19 | Toshiba Corp | Rotary disc valve |
| JPS597707A (en) * | 1982-07-07 | 1984-01-14 | Hitachi Ltd | Extraction control valve device |
| US5269648A (en) * | 1991-04-08 | 1993-12-14 | Asea Brown Boveri Ltd. | Arrangement for controlling the flow cross section of a turbomachine |
| US5409351A (en) * | 1992-05-04 | 1995-04-25 | Abb Patent Gmbh | Steam turbine with a rotary slide |
| CN109779700A (en) * | 2019-01-29 | 2019-05-21 | 东方电气集团东方汽轮机有限公司 | Nozzle of steam turbine based on governing stage static blade angle differentiation matches vapour method |
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| CN111535876A (en) | 2020-08-14 |
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