DE1143518B - Device for influencing the temperature distribution over the circumference of a steam turbine housing - Google Patents

Device for influencing the temperature distribution over the circumference of a steam turbine housing

Info

Publication number
DE1143518B
DE1143518B DES68396A DES0068396A DE1143518B DE 1143518 B DE1143518 B DE 1143518B DE S68396 A DES68396 A DE S68396A DE S0068396 A DES0068396 A DE S0068396A DE 1143518 B DE1143518 B DE 1143518B
Authority
DE
Germany
Prior art keywords
steam
annular space
circumference
flow
motive
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
Application number
DES68396A
Other languages
German (de)
Inventor
Dipl-Ing Ernst Gente
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DES68396A priority Critical patent/DE1143518B/en
Publication of DE1143518B publication Critical patent/DE1143518B/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/26Double casings; Measures against temperature strain in casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/08Cooling; Heating; Heat-insulation
    • F01D25/14Casings modified therefor

Description

Einrichtung zur Beeinflussung der Temperaturverteilung über den Umfang eines Dampfturbinengehäuses Die Erfindung betrifft eine Einrichtung zur Beeinflussung der Temperaturverteilung über deio Umfang eines Dampfturbinengehäuses mit Ringraum zwischen Gehäusemantel und Leitschaufelträger mittels zweier voneinander getrennter Dampfströme, die den Ringraum auf zwei einandei diametral gegenüberliegenden Teilen des Umfangs durchströmen und deren Mengen je nach den Temperaturen der Umfangsteile des Gehäuses selbsttätig gesteuert werden.Device for influencing the temperature distribution over the circumference of a steam turbine housing The invention relates to a device for influencing the temperature distribution over the circumference of a steam turbine housing with an annular space between the housing jacket and the guide vane carrier by means of two separate steam flows which flow through the annular space on two diametrically opposite parts of the circumference and their Quantities can be controlled automatically depending on the temperatures of the peripheral parts of the housing.

Bei der bekannten Einrichtung dieser Art werden die.se beiden Dampfströme von außen in den Ringraum eingeführt und, wenn sie ihn durchströmt haben, aus ihm durch einen Ringspalt des Leitschaufelträgers in den Treibdampfstromweg abgeführt, also in den Ringraum mit höherem Druck als demjenigen des am Ringspalt strömenden Treibdampfes eingeführt; sie sind beim Eintritt in den Ringraum voneinander verschieden warm, es ist nämlich der eine heißer und der andere kälter als der Leitschaufelträger im Ringraumbereich. Diesen Kühldampf, der also höheren Druck, aber niedrigere Temperatur als der am Ringspalt strömende Treibdampf haben muß, zu beschaffen, ist schwierig. Denn ihn, was naheläge, vor dem überhitzer zu entnehmen, verbietet sich, weil er dann nicht von den Regelventilen und vor allem auch nicht vom Schnellschlußventil kontrolliert würde; und wenn man ihn, was das einzig Mögliche zu sein scheint, hinter den Regelventilen entnimmt, so erfordert das Kühlung dieses Dampfes, also umständliche Zusatzeinrichtung, und ergibt doch, besonders bei wechselnder Last und daher wechselndem Druck- und Temperaturniveau, kaum mit Sicherheit die erwünschte genaue Temperatur dieses Dampfes. Die Erfindung soll diese Schwierigkeiten vermeiden.In the known device of this type die.se two steam streams introduced from the outside into the annulus and, when they have flowed through it, out of it discharged through an annular gap in the guide vane carrier into the motive steam flow path, So in the annular space with a higher pressure than that of the flowing at the annular gap Motive steam introduced; they are different from one another when they enter the annulus warm, namely one is hotter and the other is colder than the guide vane carrier in the annulus area. This cooling steam, the higher pressure but lower temperature than the motive steam flowing at the annular gap must have is difficult to obtain. Because it, which would be obvious, to take in front of the superheater, is forbidden because it then not from the control valves and especially not from the quick-acting valve would be controlled; and when you put him behind, which seems to be the only possible one takes from the control valves, the cooling of this steam requires, so cumbersome Additional device, and yet results, especially with changing load and therefore changing Pressure and temperature level, hardly the exact temperature you want with certainty this steam. The invention is intended to avoid these difficulties.

Die Erfindung besteht darin, daß die beiden in den Ringraum einzuführenden Dampfströme gemeinsam aus dem Treibdampfstrom an einer Stelle niedrigeren Druckes und niedrigerer Temperatur, als im Treibdampfstrom im Axialbereich des Ringraums herrschen, entnommen und getrennt voneinander durch den Ringraum in der der Richtung des Treibdampfstromes entgegengesetzten achsparallelen Richtung hindurchgeführt und aus dem Ringraum nach einer außerhalb des Turbinengehäuses gelegenen Stelle abgeführt werden.The invention consists in that the two to be introduced into the annular space Steam flows together from the motive steam flow at a point of lower pressure and lower temperature than in the motive steam flow in the axial area of the annular space prevail, taken from and separated from each other by the annulus in the direction of the motive steam flow in the opposite axis-parallel direction and from the annulus to a location outside of the turbine housing be discharged.

Es wird also bei der erfindungsgemäßen Turbine nicht der eine Umfangsteil erwärmt und nur der andere gekühlt, sondern werden beide Umfangsteile nur gekühlt, und zwar der eine je nach Bedarf mehr bzw. weniger als der andere. Es hat also der Kühldampf ganz von selbst, ohne daß er gekühlt werden müßte, stets eine angemessene niedrigere Temperatur als der zu kühlende Ringraum.It is not heated so in the inventive turbine of a peripheral part and only the other is cooled, but both peripheral parts will only be cooled, and that the other more or less than as needed. The cooling steam therefore always has a suitably lower temperature than the annular space to be cooled by itself, without it having to be cooled.

Turbinen mit Kühlung durch einen den Ringraum zwischen Gehäuse und Leitschaufelträger entgegen der Richtung des Treibdampfstromes durchziehenden Dampfstrom sind an sich bekannt; jedoch werden dort die einander diametral gegenüber fließenden Teilströme des Kühldampfes nicht getrennt voneinander gesteuert.Turbines with cooling through an annular space between the housing and Vane carrier in the opposite direction to the motive steam flow are known per se; however, there are those flowing diametrically opposite one another Partial flows of the cooling steam are not controlled separately from one another.

Die Zeichnung zeigt ein Ausführungsbeispiel. Darin bedeuten 1 den Läufer, 2 das Gehäuse und 3 und 4 Leitschaufelträger der Turbine, 6 die Frischdampfzuführungsleitungen, 7 eine hier nicht interessierende Entnahmeleitung, 8 die beiden Kühldampfabführleitungen, ferner 9,einen Ringspalt zwischen den Leitschaufelträgem 3 und 4, durch den der Kühldampf aus dem Treibdampfstrom entnommen wird, und schließlich 10 Ventile für die Steuerung des Kühldampfes.The drawing shows an embodiment. 1 denotes the rotor, 2 the housing and 3 and 4 guide vane carriers of the turbine, 6 the live steam supply lines, 7 a removal line that is not of interest here, 8 the two cooling steam discharge lines, and 9, an annular gap between the guide vane supports 3 and 4 through which the cooling steam comes out is taken from the motive steam flow, and finally 10 valves for controlling the cooling steam.

Die Erfindung läßt sich in besonders vorteilhafter Weise bei Dampfturbinen mit Entnahme in der Weise verwirklichen, daß als Kühldampfabführleitungen Entnahmedampfleitungen, die mit Ventilen für die Steuerung des Dampfes versehen sind, dienen.The invention can be used in a particularly advantageous manner in steam turbines realize with extraction in such a way that extraction steam lines are used as cooling steam discharge lines, which are provided with valves for controlling the steam are used.

Claims (2)

PATENTANSPRÜCHE-1. Einrichtung zur Beeinflussung der Temperaturverteilung über den Umfang eines Dampfturbinengehäuses mit Ringraum zwischen Gehäusemantel und Leitschaufelträger mittels zweier voneinander getrennter Dampfströme:, die den Ringraum auf zwei einander diametral gegenüberliegenden Teilen des Umfangs durchströmen und deren Mengen je nach der Temperatur der Umfangsteile des Gehäuses selbsttätig gesteuert werden, dadurch gekennzeichnet, daß die beiden in den Ringraum einzuführenden Dampfströme gemeinsam aus dem Treibdampfstrom an einer Stelle niedrigeren Druckes und niedrigerer Temperatur, als im Treibdampfstrom im Axialbereich des Ringraumes herrschen, entnommen und getrennt voneinander durch den Ringraum in der der Richtung des Treibdampfstromes entgegengesetzten achsparallelen Richtung hindurchgeführt und aus dem Ringraum nach einer außerhalb des Turbinengehäuses gelegenen Stelle, abgeführt werden. PATENT CLAIMS-1. Device for influencing the temperature distribution over the circumference of a steam turbine casing with an annular space between the casing shell and the guide vane carrier by means of two separate steam flows: which flow through the annulus on two diametrically opposite parts of the circumference and whose quantities are automatically controlled depending on the temperature of the circumferential parts of the casing, characterized in that the two steam flows to be introduced into the annular space are taken together from the motive steam flow at a point of lower pressure and temperature than prevail in the motive steam flow in the axial region of the annular space and passed separately from one another through the annular space in the axially parallel direction opposite to the direction of the motive steam flow and discharged from the annulus to a location outside the turbine housing. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß als Kühldampfabführleitungen Entnahmedampfleitungen der Turbine, die mit Ventilen für die Steuerung der Dampfmenge versehen sind, dienen. In Betracht gezogene Druckschriften-. Deutsche Patentschriften Nr. 507 129, 675 253, 916 530; deutsche Patentanmeldung S30489Ia/14c (bekanntgemacht am 29. 4. 1954); deutsches Gebrauchsmuster Nr. 1749047; USA.-Patentschriften Nr. 2 303 190, 2 402 841.2. Device according to claim 1, characterized in that extraction steam lines of the turbine, which are provided with valves for controlling the amount of steam, are used as cooling steam discharge lines. Considered pamphlets-. German Patent Nos. 507 129, 675 253, 916 530; German patent application S30489Ia / 14c (published April 29 , 1954); German utility model No. 1749047; USA. Patent Nos. 2,303,190, 2,402,841.
DES68396A 1960-05-07 1960-05-07 Device for influencing the temperature distribution over the circumference of a steam turbine housing Pending DE1143518B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES68396A DE1143518B (en) 1960-05-07 1960-05-07 Device for influencing the temperature distribution over the circumference of a steam turbine housing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES68396A DE1143518B (en) 1960-05-07 1960-05-07 Device for influencing the temperature distribution over the circumference of a steam turbine housing

Publications (1)

Publication Number Publication Date
DE1143518B true DE1143518B (en) 1963-02-14

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Family Applications (1)

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DES68396A Pending DE1143518B (en) 1960-05-07 1960-05-07 Device for influencing the temperature distribution over the circumference of a steam turbine housing

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0394894A1 (en) * 1989-04-26 1990-10-31 Gec Alsthom Sa One piece internal casing for a hp-mp steamturbine with controlled cooling

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE507129C (en) * 1927-11-27 1930-09-12 Bbc Brown Boveri & Cie Device for equalizing the heat while a steam or gas turbine that has been put out of operation is cooling down
DE675253C (en) * 1937-01-19 1939-05-03 Karl Roeder Dr Ing Device for avoiding axis deflection on steam turbines with a horizontal axis
US2303190A (en) * 1941-12-18 1942-11-24 Westinghouse Electric & Mfg Co Turbine apparatus
US2402841A (en) * 1944-06-26 1946-06-25 Allis Chalmers Mfg Co Elastic fluid turbine apparatus
DE916530C (en) * 1949-02-02 1954-08-12 Karl Roeder Dr Ing Procedure for preparing the commissioning of turbo engines for hot equipment
DE1749047U (en) * 1955-11-25 1957-07-25 Karl Dr Roeder STEAM TURBINE.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE507129C (en) * 1927-11-27 1930-09-12 Bbc Brown Boveri & Cie Device for equalizing the heat while a steam or gas turbine that has been put out of operation is cooling down
DE675253C (en) * 1937-01-19 1939-05-03 Karl Roeder Dr Ing Device for avoiding axis deflection on steam turbines with a horizontal axis
US2303190A (en) * 1941-12-18 1942-11-24 Westinghouse Electric & Mfg Co Turbine apparatus
US2402841A (en) * 1944-06-26 1946-06-25 Allis Chalmers Mfg Co Elastic fluid turbine apparatus
DE916530C (en) * 1949-02-02 1954-08-12 Karl Roeder Dr Ing Procedure for preparing the commissioning of turbo engines for hot equipment
DE1749047U (en) * 1955-11-25 1957-07-25 Karl Dr Roeder STEAM TURBINE.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0394894A1 (en) * 1989-04-26 1990-10-31 Gec Alsthom Sa One piece internal casing for a hp-mp steamturbine with controlled cooling
FR2646466A1 (en) * 1989-04-26 1990-11-02 Alsthom Gec INTERNAL STATOR HP-MP UNIQUE STEAM TURBINE WITH CONTROLLED AIR CONDITIONING

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