DE448584C - Device to protect extraction steam turbines against the inflow of water during feed water preheating by means of bleed steam - Google Patents

Device to protect extraction steam turbines against the inflow of water during feed water preheating by means of bleed steam

Info

Publication number
DE448584C
DE448584C DET32692D DET0032692D DE448584C DE 448584 C DE448584 C DE 448584C DE T32692 D DET32692 D DE T32692D DE T0032692 D DET0032692 D DE T0032692D DE 448584 C DE448584 C DE 448584C
Authority
DE
Germany
Prior art keywords
steam
feed water
water
inflow
turbine
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
DET32692D
Other languages
German (de)
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.)
GEORG WALTHER TAESCHNER DIPL I
Original Assignee
GEORG WALTHER TAESCHNER DIPL I
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 GEORG WALTHER TAESCHNER DIPL I filed Critical GEORG WALTHER TAESCHNER DIPL I
Priority to DET32692D priority Critical patent/DE448584C/en
Application granted granted Critical
Publication of DE448584C publication Critical patent/DE448584C/en
Expired legal-status Critical Current

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Description

DEUTSCHES REICH GERMAN EMPIRE

AUSGEGEBEN AM 20. AUGUST 1927ISSUED ON AUGUST 20, 1927

REICHSPATENTAMTREICH PATENT OFFICE

PATENTSCHRIFTPATENT LETTERING

KLASSE 14 c GRUPPECLASS 14c GROUP

. Georg Walther Taescbner in Darmstadt.. Georg Walther Taescbner in Darmstadt.

Patentiert im Deutschen Reiche vom 1. Dezember 1926 ab.Patented in the German Empire on December 1, 1926.

Der Zweck der vorliegenden Erfindung ist, ein Mittel zu schaffen, welches beim Bruch eines Rohres in einem mittels Anzapfdampfs beheizten Speisewasservorwärmer verhindert, daß Wasser in die Entnahmedampfturbine gedrückt wird.The purpose of the present invention is to provide a means which, upon rupture prevents a pipe in a feed water preheater heated by bleed steam, that water is pressed into the extraction steam turbine.

Bei dem Vorwärmverfahren wird das Kesselspeisewasser, welches dem Kondensator der Turbine entnommen wird, in Vorwärmern, welche durch Turbinenanzapfdampf geheizt werden, vorgewärmt. Hierbei zwingt die Vorwärmiung dies Kesselspeisewassers auf 130 bis 13 50 C entsprechend einer Dampfspannung von 3 bis 3,5 Atm. abs. zur Schaltung der Vorwärmer in die Speisewassierdruckleitung, weil ihre Schaltung vor der Speisepumpe wegen des dann verhältnismäßig hohen Druckes der Kondensatpumpe sowie im Speiaewasserausgleichs- und Vorratsbehälter betriebsunsicher und unwirtschaftlich ist.In the preheating process, the boiler feed water, which is taken from the turbine condenser, is preheated in preheaters, which are heated by turbine extraction steam. Here, the preheating of this boiler feed water forces to 130 to 13 5 0 C corresponding to a steam tension of 3 to 3.5 atm. Section. for switching the preheater in the feed water pressure line, because their connection upstream of the feed pump is unsafe and uneconomical because of the then relatively high pressure of the condensate pump and in the feed water equalization and storage tank.

Bei der erstangeführten Schaltung steht der Vorwärmer dampfseitLg auf Spannung desIn the first circuit, the preheater on the steam side is on voltage of the

Turbinenanzapfdampfs von 3 bis 3,5 Atm. abs., wasserseitig jedoch auf Kesseldruck. Es kann also bei einem Undichtwenlen der wasserführenden Vorwärmerrohre das Speisewasser unter hohem Druck in die Turbine geschleudert werden, wodurch, eine Beschädigung der Turbine hervorgerufen werden würde. Diese Gefahr suchte man bisher durch Einbau von Rückschlägventilen in die Anzapfdampfleitung zwischen Turbine und Vorwärmer zu beseitigen. Dieses Mittel bildet jedoch keinen einwandfreien Schutz der Turbine geigen Eindringen von Wasser. Denn erstens schließen die Rückschlagventile erst, nachdem eine gewisse Menge Wasser bereits hindurchgetretön ist. Zweitens kann es monate-, ja jahrelang dauern, bis die Rückschlagwirkumg dieser Ventile einmal eintreten soll. In dfer langen Zeit vorher wurden sie von dem durchströmenden, überhitzten Dampf offen gehalten und werden aller Voraussicht nach in dieser Lage festgebrannt sein.Turbine bleed steam from 3 to 3.5 atm. abs., but on the water side at boiler pressure. It can So if there is a leak in the water-bearing preheater pipes, the feed water are thrown into the turbine under high pressure, causing damage to the Turbine would be generated. So far, this danger has been sought by installing Eliminate check valves in the bleeding steam line between the turbine and preheater. However, this means does not provide proper protection for the turbine violin penetration of water. First of all, the check valves only close after a certain Amount of water has already passed through. Second, it can last for months, even years take until the non-return effect of these valves is to occur once. In dfer long A while before they were kept open by the superheated steam flowing through them and will in all likelihood be stuck in this position.

Diese Mangel will die vorliegende Erfindung, deren Ausführung die Zeichnung beispielsweise erkennen läßt, beseitigen.This deficiency is intended by the present invention, the implementation of which is shown in the drawing, for example can recognize, eliminate.

Das Kondensat wird aus dem Kondensator a über einen Sammelbehälter δ mit Hilfe der Niederdruckpumpe c abgesaugt und von letzterer auf einen Druck gebracht, welcher, um Sicherheit gegen 'ein Verdampfen des Speisewassers zu haben, etwa 0,5 Atm. abs. höher ist als der höchste Anzapf druck der Turbine^. Mit diesem Druck tritt das Speisewasser in das Röhrensysteme des Vorwärmers/, um dann der Hochdruckpumpe g zugeführt zu werden. Letztere bringt das Speisewasser auf die Kesselspannung.The condensate is sucked out of the condenser a via a collecting tank δ with the aid of the low-pressure pump c and brought to a pressure by the latter which, in order to protect against evaporation of the feed water, is about 0.5 atm. Section. is higher than the highest tap pressure of the turbine ^. At this pressure, the feed water enters the pipe system of the preheater / in order to then be fed to the high-pressure pump g. The latter brings the feed water to the boiler voltage.

In die Anzapf dampf leitung h der Turbine wird nun, und das ist das Wesen der Erfindung, eine 15 bis 20 m hohe Rohrschleife k über der Entnahmestelle angeordnet. Hierdurch wird erreicht, daß sich bei Rohrbruch im Vorwärmer eine abdrosselnde Wassersäule von 1,5 bis 2 Atm. abs. Druck selbsttätig dem Speisewasser entgegenschaltet, so daß das Speisewasser immer nur einen Druck von 1 bis 1,5 Atm. abs. unter dem Anzapf dampf druck erreichen, also niemals in die Turbine einströmen kann.In the tap steam line h of the turbine is now, and that is the essence of the invention, a 15 to 20 m high pipe loop k is arranged above the tapping point. This ensures that if a pipe breaks in the preheater, a throttling water column of 1.5 to 2 atmospheres is created. Section. Pressure automatically counteracts the feed water, so that the feed water only ever has a pressure of 1 to 1.5 atm. Section. Reach steam pressure under the tap, so it can never flow into the turbine.

Claims (1)

Patentanspruch:Claim: Einrichtung zum Schutz von Entnahmedampfturbinen gegen Einströmen von Speisewasser in die Turbine bei Speisewasservorwärmung mittels Anzapfdampfs, dadurch gekennzeichnet, daß eine vertikale Rohrschleife in der Anzapfdampfleitung zwischen Turbine und Vorwärmer zur Erzielung eines schützenden Gegenwasserdrucks bei Undichtwerden der wasserführenden Rohre im Vorwärmer angeordnet ist.Device for the protection of extraction steam turbines against ingress of Feed water into the turbine with feed water preheating by means of bleed steam, characterized in that a vertical Pipe loop in the bleeding steam line between turbine and preheater to achieve this a protective counter-water pressure in the event of a leak in the water-carrying pipes in the preheater is.
DET32692D 1926-12-01 1926-12-01 Device to protect extraction steam turbines against the inflow of water during feed water preheating by means of bleed steam Expired DE448584C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET32692D DE448584C (en) 1926-12-01 1926-12-01 Device to protect extraction steam turbines against the inflow of water during feed water preheating by means of bleed steam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET32692D DE448584C (en) 1926-12-01 1926-12-01 Device to protect extraction steam turbines against the inflow of water during feed water preheating by means of bleed steam

Publications (1)

Publication Number Publication Date
DE448584C true DE448584C (en) 1927-08-20

Family

ID=7557226

Family Applications (1)

Application Number Title Priority Date Filing Date
DET32692D Expired DE448584C (en) 1926-12-01 1926-12-01 Device to protect extraction steam turbines against the inflow of water during feed water preheating by means of bleed steam

Country Status (1)

Country Link
DE (1) DE448584C (en)

Similar Documents

Publication Publication Date Title
DE448584C (en) Device to protect extraction steam turbines against the inflow of water during feed water preheating by means of bleed steam
DE1200326B (en) Procedure for starting up a steam power plant
DE701324C (en) Forced flow tube steam generator with reheater
DE944792C (en) Steam power plant for high pressure and high temperature
DE443457C (en) Steam power plant with high and low pressure consumers
DE2161549A1 (en) Steam power plant
DE652030C (en) Safety device for pipe steam generator with forced flow of the working medium
AT60417B (en) Device for discharging the excess exhaust steam in an exhaust steam heat storage device to be installed between a high-pressure and a low-pressure machine.
DE408753C (en) Operating procedure for centrifugal pumps conveying hot water
DE231155C (en)
DE593148C (en) Hot water heating system
DE2006410A1 (en) Process for operating a steam power plant and system for carrying out the process
DE385234C (en) Steam water return feed system with several lines of different steam water
DE557251C (en) Circulation device for steam generator with a jet pump
DE476023C (en) High-pressure steam boiler with indirect heating by circulating superheated steam with a lower voltage than the voltage generated in the evaporator
DE498600C (en) Device for preventing condensate from rising into the turbine in a piston steam engine with a downstream exhaust steam turbine, which works on a condenser equipped with a vacuum booster
DE514653C (en) Safety device for tapping or steam exhaust machines with feed water preheating against the ingress of water
DE578237C (en) Safety device for steam boiler systems arranged next to the monitoring controllers
DE1035158B (en) 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
DE435532C (en) Regulation of steam engines, especially steam turbines, for high pressures and high degrees of heat
CH164630A (en) Steam generator with superheater and a feed pump designed as a multi-stage centrifugal pump.
AT77859B (en) Steam power plant.
DE502367C (en) Pump hot water high-pressure heating with a boiler that is lower than the radiator and whose steam space serves as an expansion space
DE388721C (en) Safety device for steam generation systems with two or more circulating steam boilers or stationary boilers with a circulating water layer
DE587603C (en) Low pressure steam heating system