DE550827C - Device for preheating boiler feed water through the evaporation of a counter-pressure machine regulated for output, in particular an in-house turbine - Google Patents

Device for preheating boiler feed water through the evaporation of a counter-pressure machine regulated for output, in particular an in-house turbine

Info

Publication number
DE550827C
DE550827C DES78826D DES0078826D DE550827C DE 550827 C DE550827 C DE 550827C DE S78826 D DES78826 D DE S78826D DE S0078826 D DES0078826 D DE S0078826D DE 550827 C DE550827 C DE 550827C
Authority
DE
Germany
Prior art keywords
line
preheater
feed water
steam
evaporation
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
Application number
DES78826D
Other languages
German (de)
Inventor
Dipl-Ing Carl Erns Schleissing
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 Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
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 Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Priority to DES78826D priority Critical patent/DE550827C/en
Application granted granted Critical
Publication of DE550827C publication Critical patent/DE550827C/en
Expired legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/38Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of turbine type

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)

Description

Einrichtung zum Voryvärmen von Kesselspeisewasser durch Abdampf einer auf Leistung geregelten Gegendruckmaschine, insbesondere Hausturbine Dampf, der zur Speisewasservorwärmung dienen soll, zunächst in einer Kraftmaschine arbeiten zu lassen, ist an sich bekannt. Ein derartiges Betriebsverfahren hat den Vorteil, daß ein Teil des Wärmegefälles des zur Vorwärmung verwendeten Dampfes zunächst in mechanische Arbeit umgesetzt wird, daß man also kein Druckgefälle nutzlos, 7#.B. durch Drosselung, verliert. Wenn die dampfverbrauchende Maschine als Entnahmekondensationsmaschine ausgebildet ist, so beruht ihre Regelung auf verhältnismäßig einfachen Grundsätzen, die jedoch in der praktischen Durchführung infolge der Entnahmesteuerung leine einfache Lösung ergeben. Wenn man, wie es auch vorgeschlagen ist, die Maschine als Gegendruckmaschine ausbildet und sie nach einem Druck, beispielsweise nach dem Druck in der Gegendruckleitung, regelt, so ist diese Art der Regelung in ihrer praktischen Durchführung an sich einfach. Sie hat jedoch den Nachteil, daß man keine Freiheit in der Entnahme einer bestimmten mechanischen Leistung hat.Device for pre-heating boiler feed water by means of exhaust steam from a on power controlled counter-pressure machine, in particular house turbine steam, the to serve for preheating of the feed water, first work in a prime mover to let is known in itself. Such an operating method has the advantage that part of the heat gradient of the steam used for preheating initially in mechanical work is implemented so that no pressure gradient is useless, 7 # .B. by throttling, loses. When the steam consuming machine is used as an extraction condensation machine is trained, its regulation is based on relatively simple principles, which, however, is simple in practice due to the removal control Solution. If, as suggested, the machine is used as a counter-pressure machine and after a pressure, for example after the pressure in the counter pressure line, regulates, then this type of regulation is in its practical implementation per se simple. However, it has the disadvantage that there is no freedom in removing one has certain mechanical performance.

Gegenstand der Erfindung ist nun eine neue Art der Regelung einer Gegendruckmaschine, die mit ihrer Gegendruckstufe auf einen Speisewasseraorwärmer arbeitet, die aber auf Leistung geregelt wird. Die Gegendruckleitung ist in an sich bekannter Weise ohne steuernde Organe an einen Speisewasservorwärmer angeschlossen, so: daß sich die Entnahmemenge nach der den Vorwärmer durchfließenden Speisewassermenge richtet. Die Erfindung besteht darin, daß ein Regelorgan vorgesehen ist, das in Abhängigkeit von der Abdampfmenge die Zufuhr von Entnahmedampf aus einer oder mehreren Stufen höheren Druckes der Kraftmaschine zu einer oder mehreren der ersten Vorwärmerstufe nachgeschalteten Vorwärmerstufen regelt.The invention is a new way of regulating a Counterpressure machine, which with its counterpressure stage on a feed water heater works, but is regulated on performance. The back pressure line is in itself known way connected to a feed water preheater without controlling organs, so: that the withdrawal amount depends on the amount of feed water flowing through the preheater directs. The invention consists in that a control element is provided, which in Depending on the amount of evaporation, the supply of extraction steam from one or more Stages of higher pressure of the engine to one or more of the first preheater stage downstream preheater stages.

Die Anwendung der Anordnung gemäß der Erfindung ist vor allem von Bedeutung für die Regelung von Hausturbinen. Man hat besondere Hausturbinen eingeführt, um den Eigenbedarf der Kraftzentrale auch dann umgestört decken zu können, wenn etwa im Arbeitsbereich der Hauptturbine und des an ihren Stromerzeuger angeschlossenen Netzes Störungen auftreten, insbesondere wenn das vom Hauptstromerzeuger gespeiste Kraftnetz ganz ausfällt. Wenn man, wie es vorgeschlagen ist, die Dampfzufuhr zur Hausturbine so einregelt, daß ihr Abdampf ausreicht, um das Speisewasser auch dann, wenn dessen Menge wechselt, auf eine gleichbleibende Temperatur vorzuwärmen, so muß man zur Deckung des Leistungsunterschiedes eine elektrische Ausgleichsmaschine schaffen, die Strom aus dem Hauptnetz aufnimmt oder an dieses zurückliefert. Es bleibt also immer eine Abhängigkeit zwischen Hauptturbine und Hausturbine bestehen. Diese läßt sich vermeiden, wenn man die Hausturbine in der eben angegebenen Art steuert. Sollte der Leitungsregler auch in seiner Grenzlage nicht genügend Dampf in die Turbine eintreten lassen, so kann man unmittelbar aus der Frischdampfleitung Dampf zur Speisewasservorwärmung zusätzlich zuführen und die Zufuhr dieses Dampfes z. B. in Abhängigkeit von der Vorwärmungstemperatur hinter dem letzten durch Anzapfdampf beheizten Vorwärmer steuern.The application of the arrangement according to the invention is above all of Importance for the regulation of house turbines. Special house turbines have been introduced in order to be able to cover the internal requirements of the power station even if for example in the working area of the main turbine and the one connected to its power generator Mains disturbances occur, especially if the one fed by the main power generator Power network fails completely. If, as suggested, the steam supply to the Regulates the house turbine in such a way that its exhaust steam is sufficient to if its amount changes, preheat to a constant temperature, so you have to use an electrical balancing machine to cover the difference in performance that draws electricity from the main grid or supplies it back to it. It there is always a dependency between the main turbine and the in-house turbine. This can be avoided if you use the house turbine in the manner just given controls. Should the line regulator not have enough steam even in its limit position let enter the turbine, so you can directly from the main steam line Additionally supply steam to preheat the feed water and supply this steam z. B. depending on the preheating temperature behind the last by bleed steam control heated preheater.

Das Ventil, das zusätzlich Anzapfdampf aus der Turbine in den Vorwärmer eintreten läßt, kann dabei entweder vom Druck in der Gegendruckleitung aus oder von der Vorwärmungstemperatur hinter der ersten Vorwärmerstufe geregelt werden.The valve that also feeds steam from the turbine to the preheater can occur, either from the pressure in the back pressure line or can be regulated by the preheating temperature downstream of the first preheater stage.

Die Abbildung zeigt das Schema der Anordnung gemäß der Erfindung. Ein Kessel i speist eine Kraftanlage, die aus der Hauptturbine a und der Hausturbine 3 besteht. Beide Maschinen werden durch Leistungsregler q. und 5 auf Leistung geregelt. Die letzte Stufe der Maschine 3 ist durch eine Leitung 6 ohne steuernde Organe an den Vorwärmer 7 angeschlossen. Es sei angenommen, daß augenblicklich Gleichgewicht herrscht, d. h. daß aller Abdampf der Maschine 3, der durch die Leitung 6 dem Vorwärmer 7 zuströmt, durch das Speisewasser niedergeschlagen wird, das durch eine Pumpe 8 durch den Vorwärmer 7 hindurch in dem Kessel i gespeist wird. Es vergrößere sich nun der Bedarf der an das Hausnetz 9 angeschlossenen Verbraucher io und i i_. Infolgedessen öffnet der Leistungsregler 5 und l:ißt mehr Dampf in die Maschine eintreten, da nur ein bestimmter Teil im Vorwärmer 7 niedergeschlagen werden kann. Infolge des hierdurch auftretenden Druckanstaues in der Leitung 6 öffnet das Ventil i a in der Anzapfleitung 13 der Maschine 3 das durch einen überströmimpuls i q. in Abhängigkeit vom Druck in der Leitung 6 gesteuert wird. Dadurch, daß nunmehr auch dem Vörwärmer 15 Dampf zugeführt wird, wird es ermöglicht, daß eine entsprechend vergrößerte Dampfmenge durch die Maschine 3 oder wenigstens durch ihren Hochdruckteil hindurchfließt, wodurch die verlangte Leistungssteigerung der Maschine 3 erzielt wird.The figure shows the scheme of the arrangement according to the invention. A boiler i feeds a power plant which consists of the main turbine a and the house turbine 3. Both machines are controlled by capacity regulator q. and 5 regulated on performance. The last stage of the machine 3 is connected to the preheater 7 by a line 6 without any controlling elements. It is assumed that there is instantaneous equilibrium, that is to say that all the exhaust steam from the machine 3 which flows through the line 6 to the preheater 7 is precipitated by the feed water which is fed by a pump 8 through the preheater 7 into the boiler i. The demand of the consumers io and i i_ connected to the house network 9 now increases. As a result, the capacity regulator 5 opens and allows more steam to enter the machine, since only a certain part can be deposited in the preheater 7. As a result of the pressure build-up that occurs in the line 6, the valve ia in the tapping line 13 of the machine 3 opens which is caused by an overflow pulse i q. is controlled as a function of the pressure in the line 6. The fact that steam is now also supplied to the preheater 15 makes it possible for a correspondingly increased amount of steam to flow through the machine 3 or at least through its high-pressure part, whereby the required increase in performance of the machine 3 is achieved.

Sollte es mit den bisher erläuterten Mitteln nicht möglich sein, die Vorwärmungstemperatur auf eine genügende Höhe zu bringen, so kann mit Hilfe .einer Verbindungsleitung 16 Dampf aus der Frischdampfleitung 17 in die Leitung 13 eintreten. Diese Dampfzufuhr wird durch ein Ventil 18 und einen Thermoimpuls i g gesteuert.Should it not be possible with the means explained so far, the Bringing the preheating temperature to a sufficient level can be done with the help of a Connecting line 16 Steam from the live steam line 17 enters the line 13. This supply of steam is controlled by a valve 18 and a thermal pulse i g.

Claims (1)

PATENTANSPRÜCHE: i. Einrichtung zum Vorwärmen von Kesselspeisewasser durch Abdampf einer auf Leistung geregelten Gegendruckmaschine, insbesondere Hausturbine, deren Gegendruckleitung ohne steuernde Organe an einem Speisewasservorwärmer derart angeschlossen ist, daß die sie durchfließende Abdampfmenge durch die Menge des den Speisew.asservorwärmer durchfließenden Speisewassers bestimmt ist, dadurch gekennzeichnet, daß ein Regelorgan vorgesehen ist, das in Abhängigkeit von der Abdampfmenge die Zufuhr von Entnahmedampf aus einer oder mehreren Stufen höheren Druckes der Kraftmaschine zu einer oder mehreren der ersten Vorwärmerstufe nachgeschalteten Vorwärmerstufen regelt. z. Einrichtung nach Anspruch i, dadurch gekennzeichnet, daß das Regelorgan aus einem Ventil in der oder den Anzapfleitungen und aus .einem druckempfindlichen Taktgeber in der Gegendruckleitung besteht. 3. Einrichtung nach Anspruch i, dadurch gekennzeichnet, daß ein Ventil in der oder den Anzapfleitungen in Abhängigkeit von der Vorwärmungstemperatur hinter der ersten Vorwärmungsstufe geregelt wird. ¢. Einrichtung nach Anspruch i bis 3, gekennzeichnet durch eine Verbindungsleitung zwischen der Frischdampfleitung und der Vorwärmeranlage, in der ein durch ein temperaturempfindliches Organ gesteuertes Ventil vorgesehen ist, das Dampf in solcher Menge durch die Verbindungsleitung strömen läßt, daß die endgültige Vorwärmungstemperatur nahezu gleichbleibt.PATENT CLAIMS: i. Device for preheating boiler feed water through the evaporation of a counter-pressure machine that is regulated for output, in particular an in-house turbine, their back pressure line without controlling organs on a feedwater preheater in this way is connected that the amount of evaporation flowing through it by the amount of the Feed water preheater is intended for flowing feed water, characterized in that, that a control element is provided which, depending on the amount of exhaust steam Supply of extraction steam from one or more stages of higher pressure of the engine to one or more of the preheater stages downstream of the first preheater stage regulates. z. Device according to Claim i, characterized in that the regulating member from a valve in the tapping line (s) and from a pressure-sensitive one There is a clock in the back pressure line. 3. Device according to claim i, characterized characterized in that a valve in the bleed line or lines as a function of the preheating temperature is regulated after the first preheating stage. ¢. Facility according to claim i to 3, characterized by a connecting line between the Main steam line and the preheater system, in which a temperature-sensitive Organ controlled valve is provided, the steam in such amount through the connecting line lets flow that the final preheating temperature remains almost the same.
DES78826D 1927-03-16 1927-03-16 Device for preheating boiler feed water through the evaporation of a counter-pressure machine regulated for output, in particular an in-house turbine Expired DE550827C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES78826D DE550827C (en) 1927-03-16 1927-03-16 Device for preheating boiler feed water through the evaporation of a counter-pressure machine regulated for output, in particular an in-house turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES78826D DE550827C (en) 1927-03-16 1927-03-16 Device for preheating boiler feed water through the evaporation of a counter-pressure machine regulated for output, in particular an in-house turbine

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DE550827C true DE550827C (en) 1932-05-24

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1035158B (en) * 1953-12-17 1958-07-31 Sulzer Ag Process for the operation of a steam power plant with a once-through steam generator working according to the single-pipe system and preferably with supercritical pressure and a device for carrying out the process
DE970568C (en) * 1954-03-18 1958-10-02 Licentia Gmbh Ship propulsion system with operation of the auxiliary machine propulsion turbines and / or feedwater preheating by extraction steam from the screw propulsion turbine
US2921441A (en) * 1953-12-17 1960-01-19 Sulzer Ag Feed water preheating system for steam power plants
US4099385A (en) * 1976-01-28 1978-07-11 Westinghouse Electric Corp. Extended fuel cycle operation for pressurized water reactor plants
DE3607210A1 (en) * 1986-03-05 1986-08-28 Jürgen Dipl.-Ing. Rimmelspacher (FH), 8068 Pfaffenhofen Steam generator with NOx reduction installation
EP3112621A1 (en) * 2015-07-01 2017-01-04 Anest Iwata Corporation Power generation system and power generation method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1035158B (en) * 1953-12-17 1958-07-31 Sulzer Ag Process for the operation of a steam power plant with a once-through steam generator working according to the single-pipe system and preferably with supercritical pressure and a device for carrying out the process
US2921441A (en) * 1953-12-17 1960-01-19 Sulzer Ag Feed water preheating system for steam power plants
DE970568C (en) * 1954-03-18 1958-10-02 Licentia Gmbh Ship propulsion system with operation of the auxiliary machine propulsion turbines and / or feedwater preheating by extraction steam from the screw propulsion turbine
US4099385A (en) * 1976-01-28 1978-07-11 Westinghouse Electric Corp. Extended fuel cycle operation for pressurized water reactor plants
DE3607210A1 (en) * 1986-03-05 1986-08-28 Jürgen Dipl.-Ing. Rimmelspacher (FH), 8068 Pfaffenhofen Steam generator with NOx reduction installation
EP3112621A1 (en) * 2015-07-01 2017-01-04 Anest Iwata Corporation Power generation system and power generation method

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