CN101680308A - Turbine having compact inflow housing thanks to internal control valves - Google Patents
Turbine having compact inflow housing thanks to internal control valves Download PDFInfo
- Publication number
- CN101680308A CN101680308A CN200880019281A CN200880019281A CN101680308A CN 101680308 A CN101680308 A CN 101680308A CN 200880019281 A CN200880019281 A CN 200880019281A CN 200880019281 A CN200880019281 A CN 200880019281A CN 101680308 A CN101680308 A CN 101680308A
- Authority
- CN
- China
- Prior art keywords
- nozzle sets
- valve
- modulating valve
- turbo machine
- working medium
- 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
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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
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/18—Final actuators arranged in stator parts varying effective number of nozzles or guide conduits, e.g. sequentially operable valves for steam turbines
-
- 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
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
- F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
Abstract
The invention relates to a turbine having an inflow housing (1), which comprises an inlet (3) for an inflowing working fluid, wherein the inlet can be closed by a quick closing valve (4), a pluralityof control valves (91, 8) and at least two nozzle groups (21, 22), the flow of the working fluid being controllable by the inlet (3) into the nozzle groups (21, 22) via the control valves (91, 8). Furthermore, the inlet (3) can be connected via an inlet line (7) to the first nozzle group (21), wherein the inlet line (7) is guided through the primary control valve (8) such that the flow of the working fluid along the inlet line (7) can be controlled by means of the primary control valve (8). According to the invention, the secondary control valve (91) connects the first nozzle group (21) to thesecond nozzle group (22) such that the flow of the working fluid from the first nozzle group (21) into the second nozzle group (22) can be controlled by means of the secondary control valve (91).
Description
Technical field
The present invention relates to a kind of turbo machine, it has the influent stream housing, this influent stream housing has inlet, a plurality of modulating valve and at least two nozzle sets of the working medium that is used to flow into that can be closed by quick closing valve, wherein can control working medium stream from the described nozzle sets that enters the mouth by means of described modulating valve.
Background technique
A kind of such turbo machine is disclosed from same claimant's open source literature DE 1915267A1.The influent stream housing is the part of turbine cylinder, and working medium flows in this part and middle in this section working medium sensing rotor towards turbo machine.For loading load to rotor, described influent stream housing comprises a plurality of nozzle sets, and these nozzle sets ring fans extend round rotor on common diameter.Each nozzle sets has been united the nozzle of a plurality of sensing rotors.The working medium that flows into by inlet is imported in the nozzle sets, flows out from nozzle and the moving vane group of the rotor of flowing through.Nozzle is divided into nozzle sets is used for power adjustments.Because mass flow rate is subjected to the restriction of nozzle throat area, so the variation of the nozzle sets by being loaded working medium can be controlled total mass flow rate and control the power of turbo machine thus.Control by modulating valve and to be assigned to working medium on each nozzle sets and to control the independent mass flow rate of each nozzle sets.For urgent the disconnection is provided with quick closing valve, this quick closing valve can be closed described inlet and be stoped total work MEDIA FLOW of passing through turbo machine thus.
A kind of influent stream housing of known steam turbine has been shown in Fig. 2 of DE 1915267A1 a.In this shell construction that still make today on principle, modulating valve is in the so-called valve housing or clack box of original turbine cylinder top.Working medium flows into by inlet in the side, the quick closing valve and arriving in the described clack box of flowing through, and the intake line that begins five parallel connections from this clack box is branched off into five nozzle sets by modulating valve respectively.Each nozzle sets has intake line of self and the modulating valve of self thus.Corresponding intake line and valve are connected in parallel to each other.Accompanying drawing 1 shows the circuti diagram of this device.In the structural type of today of such valving, the valve rod of the linear guide of described modulating valve drives with exclusive motor respectively and usually as not being to drive by controlling rod (Steuerbalken) shown in this open source literature.
In the another kind of known structural type of steam turbine, modulating valve is arranged in the outside of turbine cylinder and is connected with nozzle body by pipe or the bend pipe that welds.Give nozzle sets by long pipeline delivery thus away from the fresh steam stream that the influent stream housing distributes.
The shortcoming of these two kinds of structural types is, described have the clack box that is in the outside or the influent stream housing of pipe is made in the mode of very take up room (raumgreifend).In addition, these structure consumes are huge, because be necessary for cast housing, pipeline and the very high material of flange using character of valve.By towards the pipeline of nozzle sets or the repeatedly flow divert in the intake line, huge energy loss appears inevitably.In addition, the exigent adjusting power of the modulating valve of being crossed by axial flow of explanation in DE 1915267.
Summary of the invention
In view of this prior art, task of the present invention is so to improve the turbo machine of the described type of beginning, thereby its influent stream casing structure is got compactness as far as possible, and reduce the flow losses that cause by long pipeline.
This task solves at first in the following manner, and promptly described modulating valve is divided into primary regulating valve and at least one secondary modulating valve by function.In addition, described inlet is connected with first nozzle sets by entrance pipe, wherein makes entrance pipe so pass described primary regulating valve, flows thereby can control along the working medium of described entrance pipe by means of this primary regulating valve.By the present invention, described secondary modulating valve so is connected first nozzle sets with second nozzle sets, thus the stream of the working medium can controlling from first nozzle sets to second nozzle sets by means of described secondary modulating valve.
The present invention is based on so basic design, just no longer control each nozzle sets, but make described nozzle sets series connection by secondary modulating valve with modulating valve in parallel.This measure can be saved the pipeline approach in the influent stream housing in principle and be realized more compact structure type like this.In addition, the saving by pipeline also reduces flow losses.When the control turbo machine, the valve location of described primary regulating valve plays a decisive role, because primary regulating valve can be controlled total work MEDIA FLOW of passing turbo machine.Because described first nozzle sets directly is connected with described inlet with quick closing valve by described primary regulating valve, so when primary regulating valve and quick closing valve are opened, load working medium to described first nozzle sets all the time.For improving power, the nozzle sets that is arranged in the back is connected by secondary modulating valve gradually.
A kind of preferred improvement project of the present invention proposes, in the influent stream housing, be provided with the nozzle sets of at least three series connection, thereby need at least two secondary modulating valve, described secondary modulating valve couples together first nozzle sets and second nozzle sets and in other words second nozzle sets and the 3rd nozzle sets is coupled together.In order to come control efficiency with littler step-length, also suggestion is provided with the 4th nozzle sets or the 5th nozzle sets in addition; Therefore the number of necessary secondary modulating valve rises to three four in other words.
As mentioning already, the whole working medium stream described primary regulating valve of flowing through.In order steering force to be remained on the small degree and can to realize the starting stably of turbo machine, set a pre-lift for this valve in this suggestion.
The starting of such turbo machine is preferably undertaken by following steps: at first open quick closing valve when turbo machine is static, formed the pressure of working medium thus before the valve seat of described primary regulating valve.First nozzle sets directly triggers by primary regulating valve.Promote turbo machine and be placed on the working speed by means of the little pre-poppet valve that is arranged on the primary regulating valve.Machine born load and first nozzle sets fully controlled after, main inlet control valve starting and like this be the all-mass flow stream release cross section of working medium.Bound (gedeckelt) because pass the mass flow rate of the nozzle throat area of first nozzle sets, so the power of turbo machine keeps constant when reaching biggest quality flow.If further improve turbine output, that just opens described first level modulating valve, makes working medium stream also arrive second nozzle sets now.Mass flow rate increases therefrom.As long as turbo machine has other the nozzle sets that is arranged in the back, that just connects these nozzle sets by opening corresponding secondary modulating valve in the back.
Allowing by wiring of the present invention (Verschaltung) of each nozzle sets is direct encircling fan round the locking mechanism of arranging secondary modulating valve between the nozzle sets of rotor extension, just is arranged on the diameter identical with nozzle sets.Flow path in the influent stream housing further shortens thus.The structure space of influent stream housing can significantly reduce in this design in the following manner, and promptly the control lever shaft of described secondary modulating valve is radially arranged in the running shaft of rotor.The manipulation approach of described locking mechanism then that is to say the diameter that is not to be tangential on nozzle sets but radially in the diameter of nozzle sets.Reduce the outer diameter of the needs of described influent stream housing thus.
Preferably in this embodiment, the locking mechanism of described secondary modulating valve is configured to the regulating valve (Regelklappe) that can switch in rotary manner, thereby described control lever shaft is a running shaft.The locational space that the described locking mechanism that switches with rotation mode takies is less than the linear locking mechanism that switches, and requires littler steering force, and needn't seal fully.Therefore also can use the locking mechanism of the incomplete sealing of switching, because on secondary modulating valve, do not need the quick closedown function with rotation mode.This quick closedown function is born by quick closing valve and the primary regulating valve that is arranged in the back.Preferred described influent stream housing by turbo machine of the present invention is configured to annular basically and is divided at least two housing halfbodies, and wherein entrance pipe is the integrated constituent element of a housing halfbody.The advantage of this design is, can be under the situation that does not have flange to connect the pipeline of welding job medium, only need seal the input pipe fitting that enters in the turbine cylinder, and all members all obtain good preheating in starting period with piston ring.When vapour volume was very big, two housing halfbodies can be respectively equipped with integrated inlet, were used for making on the whole the nominal width of Intaking joint to double.
Advantageous applications of the present invention is in the field of the steam turbine of axial arrangement type.
Description of drawings
Should explain in detail the present invention by means of embodiment now.Accompanying drawing illustrates for this reason:
Fig. 1 is conventional valve circuit (prior art);
Fig. 2 is by valve circuit of the present invention;
Fig. 3 is the perspective view that the part of influent stream housing is decomposed;
Fig. 4 is the rear view that the part of influent stream housing is decomposed;
Fig. 5 is the section of influent stream housing;
Fig. 6 is the influent stream housing with two inlets.
Embodiment
Fig. 1 has schematically illustrated the valve circuit as the steam turbine of disclosed routine in the open source literature of being mentioned from the outset.The housing of turbo machine comprises influent stream housing 1, and unshowned rotor can be bearing in this influent stream housing 1 rotatably.Load working medium by four nozzle sets 21,22,23,24 to rotor, described nozzle sets 21,22,23,24 ring fans extend round rotor on a common diameter D.
Working medium under using the situation of steam turbine just water vapor flow in the influent stream housings 1 by inlet 3.Be right after in the back of inlet 3 and arranged quick closing valve 4, can in case of emergency close described inlet 3 apace by means of this quick closing valve 4.In the back of quick closing valve 4, working medium stream fan-shaped spreads out in four intake lines 51,52,53,54, and described intake line 51,52,53,54 will enter the mouth and 3 couple together with nozzle sets 21,22,23,24 respectively.Passing the working medium stream of intake line 51,52,53,54 controls by corresponding modulating valve 61,62,63,64.Therefore described nozzle sets 21 to 24 is in parallel to 64 by its intake line 51 to 54 and affiliated modulating valve 61 separately.
Fig. 2 shows by circuit of the present invention and arranges.Described here can directly and only being connected by entrance pipe 7 by the inlet 3 (fresh steam joint) that quick closing valve 4 is closed with described first nozzle sets 21.Described entrance pipe 7 passes primary regulating valve 8, and this primary regulating valve 8 is being controlled the whole working medium stream that passes turbo machine.Described primary regulating valve 8 advantageously is provided with a pre-lift, and this pre-lift ratio is as realizing (not shown) by the pre-poppet valve of parallel connection.
Quick closing valve 4, primary regulating valve 8 and first nozzle sets 21 are connected by entrance pipe 7 thus.Series connection continues to be extended in the 2 22, the 3 23 and the 4th nozzle sets 24.Described second nozzle sets 22 only is connected with first nozzle sets 21 by first level modulating valve 91.By second subprime modulating valve 92 second nozzle sets 22 is connected on the 3rd nozzle sets 23 in the same way, correspondingly by for the third time the level modulating valve 93 be connected in the 4th nozzle sets 24.
The locking mechanism 10 of described secondary modulating valve 91,92,93 is on the diameter D identical with nozzle sets 21,22,23,24.Obtain the special compact structure type of influent stream housing 1 thus.The control lever shaft 11 of described secondary modulating valve radially just radially extends in the housing center in the running shaft of rotor.By these measures, the servomotor 12 of described operating mechanism can be arranged in the outside of influent stream housing 1.
The concrete design recommendation of this structure type as can be seen in Fig. 3 to 5.Described secondary modulating valve 91,92,93 should be handled in rotary manner at this, thereby described locking mechanism 10 is rotary valves.Described servomotor 12 is placed on the influent stream housing 1, that is to say to be placed in the stress-free zone.Only must the control lever shaft 11 that leave described housing be sealed, this seems easy on running shaft.
Therefore, described influent stream housing 1 itself is essentially annular and obvious than compact in the prior art, because 1 need of this influent stream housing hold nozzle sets 21,22,23 and locking mechanism 10.
1 casting of described influent stream housing forms and is divided into top housing halfbody 1a and following housing halfbody 1b, and wherein said entrance pipe 7 is integrated constituent elements of following housing halfbody 1b.Primary regulating valve 8 and quick closing valve 4 are arranged in the outside of housing 1.Therefore only need the steam input pipe spare that enters in the turbine cylinder to be sealed with piston ring.Therefore can under the situation that does not have flange to connect, weld described steam pipework.
Set two entrance pipes when vapour volume is very big, can for equally the influent stream housing, be used for thus the nominal width of Intaking joint is doubled.Correspondingly also need two primary regulating valves and two quick closing valves then, each one of every inlet.
Fig. 6 shows the influent stream housing with two integrated entrance pipes 7.
Except the size of compactness and small flow losses, the special advantage of shown structure is the small adjusting power of valve.Therefore, the regulating valve 10 that is in the inside especially only needs small adjusting power and does not especially need the quick closedown device, because described regulating valve 10 is connected with primary regulating valve 8 and quick closing valve 4.In addition, the described regulating valve that is in the inside can be dismantled under the situation of not opening turbine cylinder and install.
Claims (10)
1. turbo machine, it has the influent stream housing, this influent stream housing has inlet, a plurality of modulating valve and at least two nozzle sets of the working medium that is used to flow into that can be closed by quick closing valve, wherein can flow by means of the working medium that described modulating valve is controlled from the described nozzle sets that enters the mouth
It is characterized in that,
Described influent stream housing (1) comprises primary regulating valve (8) and at least one secondary modulating valve (91), described inlet (3) is connected with first nozzle sets (21) by entrance pipe (7), wherein said entrance pipe (7) passes primary regulating valve (8), flow thereby can control along the working medium of described entrance pipe (7) by means of this primary regulating valve (8), and described secondary modulating valve (91) is connected first nozzle sets (21) with second nozzle sets (22), thus the stream of the working medium can controlling from first nozzle sets (21) to second nozzle sets (22) by means of described secondary modulating valve (91).
2. press the described turbo machine of claim 1,
It is characterized in that, be provided with the 3rd nozzle sets (23) and second subprime modulating valve (92), wherein said second subprime modulating valve (92) couples together second nozzle sets (22) and the 3rd nozzle sets (23), thus the stream of the working medium can controlling from second nozzle sets (22) to the 3rd nozzle sets (23) by means of described second subprime modulating valve (92).
3. press claim 1 or 2 described turbo machines,
It is characterized in that,
Described primary regulating valve (8) is provided with a pre-lift.
4. press each described turbo machine in the claim 1 to 3,
Wherein, described turbo machine comprises the rotor that can be bearing in rotatably in the influent stream housing (1), wherein said nozzle sets (21,22) ring fan is gone up at common diameter (D) and is extended round rotor, and wherein each secondary modulating valve (91,92) has locking mechanism (10) and control lever shaft (11)
It is characterized in that,
The locking mechanism (10) of described secondary modulating valve (91,92) is arranged on the diameter (D) of described nozzle sets (21,22,23).
5. press the described turbo machine of claim 4,
It is characterized in that,
The control lever shaft (11) of described secondary modulating valve (91,92) radially extends in the running shaft of rotor.
6. press the described turbo machine of claim 5,
It is characterized in that,
The locking mechanism (10) of described secondary modulating valve (91,92) can switch with rotation mode, thereby described control lever shaft (11) is a running shaft.
7. press claim 4,5 or 6 described turbo machines,
It is characterized in that,
Described influent stream housing (1) is essentially annular and is divided at least two housing halfbodies (1a, 1b), and wherein said entrance pipe (7) is the integrated constituent element of a housing halfbody (1b).
8. press each described turbo machine in the aforementioned claim,
Wherein, described nozzle sets (21,22,23) is respectively equipped with the nozzle of a large amount of sensing rotors,
It is characterized in that,
Described nozzle shaft is to the sensing rotor, thereby described turbo machine is flow through by the running shaft ground that working medium is parallel to its rotor as axial turbo machine.
9. press each described turbo machine in the aforementioned claim,
It is characterized in that,
The working medium that flows into is a water vapor.
10. be used to move the method that is particularly useful for starting by the described turbo machine of claim 3, it is characterized in that following steps:
A) open quick closing valve (4),
B) open the pre-lift of primary regulating valve (8),
C) after reaching the working speed of rotor, open described primary regulating valve (8) fully,
D) open described first level modulating valve (91).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07011268.5 | 2007-06-08 | ||
| EP07011268A EP2000632A1 (en) | 2007-06-08 | 2007-06-08 | Turbine with a compact inflow casing due to inner control valves |
| PCT/EP2008/055045 WO2008148607A1 (en) | 2007-06-08 | 2008-04-25 | Turbine having compact inflow housing thanks to internal control valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101680308A true CN101680308A (en) | 2010-03-24 |
Family
ID=38668641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880019281A Pending CN101680308A (en) | 2007-06-08 | 2008-04-25 | Turbine having compact inflow housing thanks to internal control valves |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20100178153A1 (en) |
| EP (2) | EP2000632A1 (en) |
| CN (1) | CN101680308A (en) |
| BR (1) | BRPI0812409A2 (en) |
| CA (1) | CA2689224A1 (en) |
| WO (1) | WO2008148607A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027544A (en) * | 2021-05-13 | 2021-06-25 | 西安热工研究院有限公司 | Equal-nozzle-number multi-arc-section high-regulation valve-nozzle group arrangement structure |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009010608B4 (en) * | 2009-02-25 | 2011-06-16 | Siemens Aktiengesellschaft | Design of the inflow chamber with radial inflow and distribution of live steam flow in 2 sections |
| ITMI20091740A1 (en) * | 2009-10-12 | 2011-04-13 | Alstom Technology Ltd | AXIAL STEAM TURBINE POWERED HIGH TEMPERATURE RADIAL |
| DE102010041704A1 (en) | 2010-09-30 | 2012-04-05 | Siemens Aktiengesellschaft | Regulating valve for controlling flow volume inside pipeline, is arranged in pipeline rotatable around rotational axis and corresponding to its rotational position decontrols flow cross-section inside pipeline |
| JP6448974B2 (en) * | 2014-10-03 | 2019-01-09 | 三菱日立パワーシステムズ株式会社 | Steam chamber of geothermal turbine, geothermal turbine provided with the same, and steam supply method of geothermal turbine |
| US10480417B2 (en) * | 2016-07-14 | 2019-11-19 | Hamilton Sundstrand Corporation | Air turbine start system |
| JP6938139B2 (en) * | 2016-11-28 | 2021-09-22 | 三菱パワー株式会社 | Steam turbine equipment |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1473690A (en) * | 1922-05-31 | 1923-11-13 | Oscar H Wolner | Serial-flow turbine |
| DE679924C (en) * | 1936-08-30 | 1939-08-17 | Erich Koepke | Switching device for steam turbines |
| DE676982C (en) * | 1937-11-02 | 1939-06-16 | Fried Krupp Germaniawerft Akt | High pressure single seat valve for steam turbines |
| DE690631C (en) * | 1939-02-12 | 1940-05-03 | Siemens Schuckertwerke Akt Ges | |
| US2304993A (en) * | 1941-06-20 | 1942-12-15 | Westinghouse Electric & Mfg Co | Steam turbine apparatus |
| US2376212A (en) * | 1945-03-22 | 1945-05-15 | Gen Electric | Elastic fluid turbine arrangement |
| DE1915267B2 (en) * | 1969-03-26 | 1971-05-06 | Siemens AG, 1000 Berlin u 8000 München | INPUT BOX FOR NOZZLE GROUP CONTROL OF STEAM TURBINES |
| JPS57143106A (en) * | 1981-02-26 | 1982-09-04 | Toshiba Corp | Geothermal turbine |
| US4456032A (en) * | 1982-01-18 | 1984-06-26 | Elliott Turbomachinery Company, Inc. | Fluid admission valve structure |
| JPS5990703A (en) * | 1982-11-15 | 1984-05-25 | Fuji Electric Co Ltd | Stage for adjusting speed of steam turbine |
| DE4214775A1 (en) * | 1992-05-04 | 1993-11-11 | Abb Patent Gmbh | Steam turbine with a rotary valve |
| US6398518B1 (en) * | 2000-03-29 | 2002-06-04 | Watson Cogeneration Company | Method and apparatus for increasing the efficiency of a multi-stage compressor |
-
2007
- 2007-06-08 EP EP07011268A patent/EP2000632A1/en not_active Withdrawn
-
2008
- 2008-04-25 CA CA002689224A patent/CA2689224A1/en not_active Abandoned
- 2008-04-25 BR BRPI0812409-4A2A patent/BRPI0812409A2/en not_active Application Discontinuation
- 2008-04-25 EP EP08736568A patent/EP2153029A1/en not_active Withdrawn
- 2008-04-25 US US12/602,891 patent/US20100178153A1/en not_active Abandoned
- 2008-04-25 WO PCT/EP2008/055045 patent/WO2008148607A1/en active Application Filing
- 2008-04-25 CN CN200880019281A patent/CN101680308A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027544A (en) * | 2021-05-13 | 2021-06-25 | 西安热工研究院有限公司 | Equal-nozzle-number multi-arc-section high-regulation valve-nozzle group arrangement structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2689224A1 (en) | 2008-12-11 |
| US20100178153A1 (en) | 2010-07-15 |
| EP2000632A1 (en) | 2008-12-10 |
| WO2008148607A1 (en) | 2008-12-11 |
| EP2153029A1 (en) | 2010-02-17 |
| BRPI0812409A2 (en) | 2014-12-02 |
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Application publication date: 20100324 |