DE707939C - Steam power plant for the constant volume process with a back pressure turbine - Google Patents
Steam power plant for the constant volume process with a back pressure turbineInfo
- Publication number
- DE707939C DE707939C DES115638D DES0115638D DE707939C DE 707939 C DE707939 C DE 707939C DE S115638 D DES115638 D DE S115638D DE S0115638 D DES0115638 D DE S0115638D DE 707939 C DE707939 C DE 707939C
- Authority
- DE
- Germany
- Prior art keywords
- back pressure
- constant volume
- pressure turbine
- turbine
- power plant
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
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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
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
- F01D1/023—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines the working-fluid being divided into several separate flows ; several separate fluid flows being united in a single flow; the machine or engine having provision for two or more different possible fluid flow paths
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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
- F01D17/146—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by throttling the volute inlet of radial machines or engines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Turbines (AREA)
Description
Dampfkraftanlage für das Konstantvolumenverfahren mit einer Gegendruckturbine Zusatz zum Patent 703 388 Das Konstantvolumenverfahren nach dem Hauptpatent schafft die Möglichkeit, über einen großen Lastbereich mit annähernd gleichbleibendem günstigen. Wirkungsgrad der Turbine zu arbeiten. Betrachtet man sich nun die Verhältnisse, die sich ergeben, wenn die Turbine des Konstantvolumenverfahrens keine sondern eine Gegendruckmaschine ist, so ergibt sich, daß das Konstantvolumenverfahren nur _ dann durchführbar ist, wenn der Gegendruck sich verhältnisgleich zum Anfangsdruck ändert. DieseMöglichkeit wird jedoch in den meisten Fällen nicht vorhanden sein, sondern es wird die Forderung bestehen, daß der Gegendruck bei allen Dampfmengen im wesentlichen gleichbleibt. Wenngleich auch dann die Wirkungsgradschwankungen unter Anwendung des Konstantvolumenverfahrens wesentlich geringer sind. als bei der normalen Gegendruckanlage, so wäre es :doch wünschenswert, auch für den Gegendruckbetrieb eine weitgehende Wirkungsgradsteigerung zu erzielen. Das läßt sich erreichen, wenn man in den Entspannungsverlauf der Gegendruckturbine, und zwar möglichst weit nach dem Ende des Entspannungsverlaufes zu, ein Regelorgan einschaltet, das vor sich den Druck verhältnisgleich zum Anfangsdruck ändert. Gemäß der Erfindung ist der Entspannungsverlauf des Dampfes in der Gegendruckturbine durch ein Regelorgan in zwei Teile zerlegt, von denen der erste mit sich entsprechend demEintrittsdruck änderndem Gegendruck, der zweite mit annähernd gleichbleibendem Gegendruck arbeitet. Da sich bei dieser Anordnung die Wirkungsgradschwankungen nur auf den letzten Teil des Entspannungsverlaufes beschränken, ist der Gesamtwirkungsgrad der Gegendruckmaschine bei Anwendung der Erfindung hoch: Für die Steuerung des Regelorgans stehen verschiedene Wege ,zur Verfügung. Man kann z. B. eine Drucksteuerung anwenden, die in Abhängigkeit vom Anfangsdruck der Maschine ,arbeitet. Da jedoch `bei gleichbleibender Anfangstemperatur der Druck sich verhältnisgleich mit der Belastung der Maschine ändert, so kann man auch einen Lastimpuls als Steuerimpuls für dieses Regelorgan verwenden.Steam power plant for the constant volume process with a back pressure turbine Addition to patent 703 388 The constant volume method according to the main patent creates the possibility of over a large load range with an almost constant favorable. Working efficiency of the turbine. If one now looks at the conditions, which result when the turbine of the constant volume method is not but a Is counterpressure machine, it follows that the constant volume method is only _ can be carried out if the back pressure changes in proportion to the initial pressure. In most cases, however, this option will not be available, but rather there will be a requirement that the back pressure at all amounts of steam substantially remains the same. Even then, the fluctuations in efficiency under application of the constant volume method are significantly lower. than with the normal counter pressure system, so it would be: but desirable, an extensive one for counter-pressure operation as well To achieve an increase in efficiency. This can be achieved if you go into the relaxation process the back pressure turbine, as far as possible after the end of the expansion process to, a control organ switches on, the pressure in front of it in proportion to the initial pressure changes. According to the invention, the expansion curve of the steam is in the back pressure turbine divided into two parts by a regulating organ, the first of which with itself accordingly the inlet pressure changing back pressure, the second with an approximately constant Back pressure works. Since with this arrangement the efficiency fluctuations only limit to the last part of the expansion process, is the overall efficiency of the counter-pressure machine when using the invention high: For the control of the regulating member different ways are available. You can z. B. apply a pressure control, which works depending on the initial pressure of the machine. However, since `with the same The initial temperature of the pressure is proportional to the load on the machine changes, you can also use a load pulse as a control pulse for this control element use.
Ein Ausführungsbeispiel der Erfindung ist schematisch in der Abbildung dargestellt, und zwar im Zusammenhang mit einer radial beaufschlagten Gegendruckturbine. Es ist dabei eine Zweigehäusemaschine mit fliegenden Rädern angenommen, die von der Stromerzeugerwelle getragen werden. Die Teilturbine i arbeitet nach dem Konstantvolumenverfahren, d. h. sie besitzt entweder überhaupt kein Regelorgan, oder wenn ein solcl vor der Maschine vorgesehen ist, so dient e nur dazu, die durch den Kessel nicht ausgeglichenen Lastschwankungen auszugleichen. Hinter der Teilturbine i, d. h. vor der Teilturbine a, ist gemäß der Erfindung ein Regelorgan 3 angeordnet, das so gesteuert wird, daß sich der Gegendruck der Teilturbine i verhältnisgleich dem Eintrittsdruck ändert. Der Druck im Abdampfstutzen 4 der Teilturbine z wird dann auf annähernd gleicher Höhe gehalten, so daß die Teilturbine i mit annähernd gleichbleibendem Wirkungsgrad und nur die Teilturbine 2 mit wechselndem Wirkungsgrad arbeitet.An embodiment of the invention is shown schematically in the figure shown, in connection with a radially acted back pressure turbine. It is there assumed a two-case machine with flying wheels, which are carried by the generator shaft. The turbine section i reworks the constant volume method, d. H. it either has no regulating body at all, or if a solcl is provided in front of the machine, it only serves to pass through the boiler to compensate for load fluctuations that are not balanced. Behind the turbine section i, d. H. in front of the turbine section a, a control element 3 is arranged according to the invention, which is controlled so that the back pressure of the turbine section i is proportionate the inlet pressure changes. The pressure in the exhaust steam nozzle 4 of the turbine section z is then held at approximately the same height, so that the turbine section i with approximately constant efficiency and only the turbine section 2 with changing efficiency is working.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES115638D DE707939C (en) | 1932-10-01 | 1934-10-03 | Steam power plant for the constant volume process with a back pressure turbine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1932S0106499 DE703388C (en) | 1932-10-01 | 1932-10-01 | Method for regulating a steam power plant, in particular with a forced flow steam generator |
DES115638D DE707939C (en) | 1932-10-01 | 1934-10-03 | Steam power plant for the constant volume process with a back pressure turbine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE707939C true DE707939C (en) | 1941-07-08 |
Family
ID=25998647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES115638D Expired DE707939C (en) | 1932-10-01 | 1934-10-03 | Steam power plant for the constant volume process with a back pressure turbine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE707939C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19616307C1 (en) * | 1996-04-24 | 1997-07-31 | Antje Otte | Perfumed insert for toilet roll |
-
1934
- 1934-10-03 DE DES115638D patent/DE707939C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19616307C1 (en) * | 1996-04-24 | 1997-07-31 | Antje Otte | Perfumed insert for toilet roll |
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