DE1212561B - Axial high pressure hot steam turbine - Google Patents
Axial high pressure hot steam turbineInfo
- Publication number
- DE1212561B DE1212561B DEL42883A DEL0042883A DE1212561B DE 1212561 B DE1212561 B DE 1212561B DE L42883 A DEL42883 A DE L42883A DE L0042883 A DEL0042883 A DE L0042883A DE 1212561 B DE1212561 B DE 1212561B
- Authority
- DE
- Germany
- Prior art keywords
- steam
- inner housing
- turbine
- housing
- space
- 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
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
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/14—Casings modified therefor
-
- 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
- F01D25/26—Double casings; Measures against temperature strain in casings
Description
Axial-Hochdruckheißdampf-Turbine Die Erfindung betrifft eine Axial-Hochdruckheißdampf-Turbine mit einem Außengehäuse, mit einem Innengehäuse, dessen Innenraum am Dampfeintrittsende gegen den zwischen dem Außen- und dem Innengehäuse befindlichen Zwischenraum abgedichtet ist, und mit einer oder mehreren Dampfzuführungen, die gegen den Zwischenraum abgedichtet sind.Axial high pressure hot steam turbine The invention relates to an axial high pressure hot steam turbine with an outer housing, with an inner housing, the interior of which is at the steam inlet end sealed against the space located between the outer and inner housing is, and with one or more steam inlets that are sealed against the gap are.
Bei den bekannten Turbinen dieser Art ist der Innenraum des Innengehäuses zum Zwischenraum hin offen, also das Außengehäuse dem aus der Turbine abströmenden Dampf, also dessen Druck und dessen Temperatur ausgesetzt. Das ist, wenn dieser Druck und diese Temperatur sehr hoch sind, unerwünscht, weil dann das Außengehäuse erstens sehr dickwandig sein muß, also bei schneller Änderung der Last und somit der Dampftemperatur starke Wärmespannungen erleidet, und zweitens aus hochwarmfestem, kostspieligem Werkstoff bestehen muß und daher sehr teuer wird. , Das soll die - Erfindung vermeiden. Sie besteht darin, daß der Innenraum des Innengehäuses auch am Austrittsende und däß auch die Dampfabführungen gegen den Zwischenraum abgedichtet sind und daß durch den Zwischenraum Dampf von niedrigerem Druck und niedrigerer Temperatur als dem in der Dampfabführung herrschenden geleitet wird.In the known turbines of this type, the interior space is the inner housing open towards the intermediate space, i.e. the outer casing is the one flowing out of the turbine Steam, exposed to its pressure and temperature. That's when this one Pressure and this temperature are very high, undesirable because then the outer housing Firstly, it must be very thick-walled, i.e. with rapid changes in the load and thus the steam temperature suffers strong thermal stresses, and secondly from high temperature resistant, expensive material must exist and is therefore very expensive. 'That should be the - Avoid invention. It consists in the fact that the interior of the inner housing also at the outlet end and that the steam outlets are also sealed against the gap and that through the interspace steam of lower pressure and lower Temperature than that prevailing in the steam discharge is passed.
Die axiale Fixierung des Innengehäuses am Außengehäuse pflegt man in der achsnormalen Ebene der Dampfzuführungsrohre anzuordnen, damit in deren Gleitdichtungen möglichst wenig Querverschiebungen durch Wärmedehnungen des Innengehäuses auftreten. Damit bei der erfindungsgemäßen Turbine dies auch in den Gleitdichtungen der Dampfabführungsrohre erreicht wird, empfiehlt sich, daß das Innengehäuse nicht in Achsebene geteilt, aber in einer achsnormalen Ebene in zwei Teile geteilt ist, deren einer in bekannter Weise etwa in der achsnormalen Ebene der Dampfzuführung(en) und deren anderer etwa in der achsnormalen Ebene der Dampfabführung(en) axial fixiert ist, und daß diese beiden Teile in der Teilfuge aneinander gegen den zwischen dem Außen- und dem Innengehäuse befindlichen Zwischenraum wärmebeweglich abgedichtet sind; zweigeteilt muß das Innengehäuse, wenn an zwei Stellen axial fixiert, deshalb sein, weil es sich sonst nicht dehnen könnte.The axial fixation of the inner housing on the outer housing is maintained to be arranged in the axis-normal plane of the steam supply pipes, thus in their sliding seals As few transverse shifts as possible occur due to thermal expansion of the inner housing. Thus, in the turbine according to the invention, this also applies to the sliding seals of the steam discharge pipes is achieved, it is recommended that the inner housing is not divided in the axial plane, but is divided into two parts in a plane normal to the axis, one of which is known Way approximately in the axis normal plane of the steam supply (s) and their other approximately is axially fixed in the axis-normal plane of the steam discharge (s), and that this two parts in the parting line against each other against the one between the outer and inner housing located intermediate space are heat-sealed; the inner housing must be divided into two parts, if it is axially fixed in two places, it must be because otherwise it will not stretch could.
Damit die zwischen den beiden Teilen des Innengehäuses nötige Abdichtung, die ja wegen des beträchtlichen Druckgefälles mehrere hintereinandergeschaltete Dichtungsringe erfordert, radial möglichst wenig Platz benötigt, also den Durchmesser und somit auch die Wandstärke des Außengehäuses möglichst wenig zu vergrößern zwingt, empfiehlt sich, die Dichtungsringe axial hintereinander anzuordnen. Daher sieht die Erfindung in weiterer Ausgestaltung vor, daß der Innengehäuse-Hochdruckteil über einen Teil seiner Länge vom Innengehäuse-Niederdruckteil umgeben, also die Teilfuge zwischen den beiden Innengehäuse-Teilen wesentlich zylindrisch ist und daß in der Teilfuge mehrere Dichtungsringe axial hintereinander angeordnet sind.So that the seal required between the two parts of the inner housing, which, because of the considerable pressure difference, have several connected in series Sealing rings require as little space as possible radially, i.e. the diameter and thus also forces the wall thickness of the outer housing to be increased as little as possible, it is advisable to arrange the sealing rings axially one behind the other. Hence sees the invention in a further embodiment that the inner housing high-pressure part Surrounded over part of its length by the inner housing low-pressure part, so the Parting line between the two inner housing parts is essentially cylindrical and that a plurality of sealing rings are arranged axially one behind the other in the parting line.
Dabei empfiehlt sich, die Teilfuge so zu gestalten, daß der Durchmesser der Teilfuge zum dampfeintrittsseitigen Ende der Turbine hin stufenweise zunimmt und daß die Dichtungsringe gegen die von den Stufen gebildeten ringförmigen Stirnflächen des Innengehäuse-Hochdruckteils anliegen.It is advisable to design the parting line so that the diameter the parting line gradually increases towards the steam inlet end of the turbine and that the sealing rings against the annular end faces formed by the steps of the inner housing high-pressure part are in contact.
Den Leckdampf dieser Teilfugendichtung kann man dadurch ausnutzen, daß die in der Teilfuge zwischen den einzelnen Dichtringen gebildeten Ringräume durch Leitungen mit innerhalb der Turbine befindlichen Dampfräumen jeweils etwa gleichen Drucks verbunden sind.The leakage steam from this partial joint seal can be exploited by that the annular spaces formed in the parting line between the individual sealing rings through lines with steam chambers located inside the turbine, each about connected to the same pressure.
Es liegt nahe, daß der in den Gehäusezwischenraum einzuführende Dampf aus einer der Vorschaltturbine nachgeschalteten Dampfturbine entnommen wird.It is obvious that the steam to be introduced into the housing space is taken from a steam turbine downstream of the upstream turbine.
Um auch die Wärmestrahlung vom Innengehäuse ins Außengehäuse zu verhindern, ist eine an sich bekannte Bauart ratsam, bei der das Innengehäuse und das Außengehäuse gegeneinander in an sich bekannter Weise durch eine sich in dem Gehäusezwischenraum erstreckende Wärmeschürze abgeschirmt sind.In order to also prevent heat radiation from the inner housing into the outer housing, a design known per se is advisable in which the inner housing and the outer housing against each other in a manner known per se by one in the housing space extending thermal apron are shielded.
Und dann empfiehlt sich, daß der in den Gehäusezwischenraum einzuführende Dampf in den Raum zwischen Außengehäuse und Wärmeschürze eingeleitet wird.And then it is recommended that the one to be introduced into the space between the housing Steam is introduced into the space between the outer casing and the thermal skirt.
Die Zeichnung zeigt eine erfindungsgemäße Turbine. Darin bezeichnet 1 das Außengehäuse, 21 und 22 den Hochdruckteil bzw. den Niederdruckteil des Innengehäuses, 31 und 32 die Leitschaufelträger, 4 den Gehäusezwischenraum, 51 und 52 ein Dämpfzuführungs- bzw. Dampfabführungsrohr, 6 die Teilfuge zwischen den beiden Teilen des Innengehäuses, 7 die Dichtungen der Teilfuge, 8 Kanäle für den in den Gehäusezwischenraum einzuführenden Dampf niederen Zustandes und 9 die Wärmeschürze.The drawing shows a turbine according to the invention. Inscribed therein 1 the outer housing, 21 and 22 the high pressure part and the low pressure part of the Inner housing, 31 and 32 the guide vane carrier, 4 the housing space, 51 and 52 a damping feed or steam discharge pipe, 6 the parting line between the two parts of the inner housing, 7 the seals of the parting line, 8 channels for the one to be introduced into the housing space Low steam and 9 the warming apron.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL42883A DE1212561B (en) | 1962-09-05 | 1962-09-05 | Axial high pressure hot steam turbine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL42883A DE1212561B (en) | 1962-09-05 | 1962-09-05 | Axial high pressure hot steam turbine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1212561B true DE1212561B (en) | 1966-03-17 |
Family
ID=7270067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL42883A Pending DE1212561B (en) | 1962-09-05 | 1962-09-05 | Axial high pressure hot steam turbine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1212561B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0158629A2 (en) * | 1984-03-23 | 1985-10-16 | Herbert Dipl.-Ing. Dr. Univ. Prof. Jericha | Steam cycle for a steam power plant |
AT381367B (en) * | 1984-06-20 | 1986-10-10 | Jericha Herbert Dipl Ing Dr Te | Internal insulation for high-temperature steam turbines |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB304474A (en) * | 1928-01-23 | 1929-01-24 | Herbert Henry Berry | Electric fires or radiators |
DE833738C (en) * | 1943-02-04 | 1952-03-10 | Maschf Augsburg Nuernberg Ag | Gas turbine with almost isothermal expansion |
CH292899A (en) * | 1951-07-19 | 1953-08-31 | Bbc Brown Boveri & Cie | Process and device for cooling the steam-carrying parts of a high-pressure superheated steam turbine system. |
DE974992C (en) * | 1952-12-24 | 1961-06-29 | Siemens Ag | Installation on steam or gas turbines of the double-housing design to enable propellant supply or discharge |
-
1962
- 1962-09-05 DE DEL42883A patent/DE1212561B/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB304474A (en) * | 1928-01-23 | 1929-01-24 | Herbert Henry Berry | Electric fires or radiators |
DE833738C (en) * | 1943-02-04 | 1952-03-10 | Maschf Augsburg Nuernberg Ag | Gas turbine with almost isothermal expansion |
CH292899A (en) * | 1951-07-19 | 1953-08-31 | Bbc Brown Boveri & Cie | Process and device for cooling the steam-carrying parts of a high-pressure superheated steam turbine system. |
DE974992C (en) * | 1952-12-24 | 1961-06-29 | Siemens Ag | Installation on steam or gas turbines of the double-housing design to enable propellant supply or discharge |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0158629A2 (en) * | 1984-03-23 | 1985-10-16 | Herbert Dipl.-Ing. Dr. Univ. Prof. Jericha | Steam cycle for a steam power plant |
EP0158629A3 (en) * | 1984-03-23 | 1986-02-26 | Herbert Dipl Ing Dr Jericha | Steam cycle for a steam power plant |
AT381367B (en) * | 1984-06-20 | 1986-10-10 | Jericha Herbert Dipl Ing Dr Te | Internal insulation for high-temperature steam turbines |
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