DE1196900B - Gas-steam turbine system - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

Number:
File number:
Registration date:
Aiislegetag:

F02c

German KL: 46 F-3/70

1196 900
D 362561 a / 46 f
June 5, 1961
IS. JuH 1965

The invention relates to a gas-steam turbine system using a combustion chamber and a mixing element designed as a mixing chamber and arranged between its outlet and the turbine for mixing the fuel gases with those generated by them in a heat exchanger, under pressure standing water vapor.

These systems have the purpose of adding steam to fuel gases Reduce the temperature in order to prevent the hot turbine blades from having a detrimental effect Avoid combustion gases.

It is known that the combustion chamber is connected to a water supply line to generate the water vapor To provide connected cooling jacket and the hot water generated in the cooling jacket via a Control valve of a mixing nozzle for fuel gas and hot water to feed. The hot water produced must be removed in accordance with its production be, the regulator valve leaves little leeway for a dosage, since no other pressure control is available.

It is also known to accommodate the nozzle generating fuel gases in a jacket filled with water and the hot water generated in the cooling jacket at the outlet end of the fuel gases mix this one. There is an escape of pure water vapor without water into the mixing chamber not guaranteed.

According to the invention, there is an independently controllable release of pure water vapor for admixing to the fuel gases achieved by using in a gas-steam turbine system a combustion chamber and one arranged between its outlet and the turbine as Mixing chamber designed mixing element for mixing the fuel gases with them in one Heat exchangers generated pressurized water vapor in the heat exchanger Gas-steam turbine systems are known in a manner that feeds the combustion gases from the combustion chamber The pipe surrounding the mixing chamber consists of a water tank, which is in the case of steam generators of gas-steam turbine systems known manner has a Dampfsammeidom, the line of the water vapor is branched off to the mixing chamber from the Dampfsammeidom.

The fuel gas inlet and the steam inlet into the mixing chamber are expedient controlled by flap valves.

By arranging a steam dome on the water tank surrounding the fuel gas discharge line, Gas-steam turbine system

Applicant:

Wolfgang Döhling, Bremen, Prangenstr. 7th

Named as inventor;
Wolfgang Döhling, Bremen.

whereby the steam line branches off from the steam dome, it is achieved that the mixing chamber exclusively Steam and no water is supplied.

The flap valves allow the fuel gas / water vapor mixture ratio to be regulated.

The new training is below with reference to the schematically held drawings (Fig. 1 and 2) explained in more detail.

A cube-shaped space 1 with a heat-storing layer serves as the combustion chamber lined and divided by openwork transverse walls. The combustion chamber wall is appropriate still provided with an outer insulating layer. The perforated, heat-storing transverse walls result in an even distribution of the combustion gases. Nozzles connected in series are arranged between the transverse walls. Via a common connection piece 2 you get your gas supply. A centrifugal pump 3 is connected upstream of the connecting piece 2, which pushes the gas from a fuel tank into the combustion chamber. To a setback to prevent the flame, is both in front of and behind the pump 3 in the connecting piece a flame protection inserted.

In front of the pump 3 there is a control valve 4 which controls the gas supply 6 and the air supply 5. It also serves as an emergency valve to quickly escape fuel from the storage tank in an emergency to be able to let. Behind the pump 3 is a valve 15 through which the gas supply line 6 via a Bypass line 16 can be connected directly to the connecting piece 2.

On the front wall of the combustion chamber 1, a fuel gas outlet pipe 7 is arranged, which of a Steel jacket is surrounded, which forms a water tank 8.

The pipe 8 forming the water tank carries a steam dome 9.

509 600/129

The pipe 7 discharging the combustion gases is connected to a mixing chamber 10 via a flap check valve 11 connected. A line 12, which has a flap check valve 13, leads from the steam dome 9, also to the mixing chamber 10. The mixing chamber 10 consists of a steel body with Delivery nozzle 14. All parts are designed to prevent energy loss through heat radiation isolated.

The valve 4 is in the starting position

V 2 brought, in which it does not completely close the air supply nozzle 5.

The gas is pressed by the centrifugal pump 3 running at starter speed through the valve 15, which is in position IS ₁ , into the connecting piece 2.

The gas flows into the combustion chamber 1 and is ignited by means of electrodes arranged in it.

Only after increasing the speed of the pump 3 is the drive gas intensified in the combustion chamber 1 pressed. This way there is a rapid increase in pressure and therefore a sudden strain the force-transmitting parts prevented. With the increase in the speed of the pump 3 increases the gas and air supply so that the combustion temperatures, the pressure and thus the performance of the system increase. The performance of the system depends on the cross-section and the number of Nozzles and the performance of the pump dependent. The pump must be the one on all nozzle openings Able to overcome high-performance storage pressure.

The system, which initially works as a pure gas turbine, runs after the high voltage of the steam has been reached continues as a gas-steam turbine system and the combustion chamber 1 is heated too much, then the valve 4 is moved from position F 2 to position

VI brought. This reduces the gas supply and by sucking in more air, the proportions of O ₂ and N ₂ (oxygen-nitrogen) are increased; this saves gas and at the same time reduces the system's output to the permissible level.

Due to the heat-storing layer of the combustion chamber 1, it is even possible to use the system for a short time to be operated with pure air supply. The required energy is provided by the heat-storing Layers of the combustion chamber 1 delivered.

The valves 4 and 15 are brought into the positions 15 ₂ and V 3 to fill the fuel reservoir. The pump 3 can then press the fuel from a fuel suction line that can be connected to the nozzle 5 for the air supply via the bypass 16 and the line 6 into the fuel reservoir.

In emergencies, the valve 4 is brought into the position V1 and the valve 15 into the position 15 ₂ . The gas can then escape from the fuel reservoir via line 6 and air intake line 5 into the atmosphere.

The water supply to the water tank 8 carrying the steam dome 9 takes place by means of a Pressure pump from a water jacket surrounding the fuel tank.

Claims (2)

Patent claims: 1. Gas-steam turbine system using one combustion chamber and one between whose outlet and the turbine arranged, designed as a mixing chamber mixing element for Mixing the fuel gases with the pressurized gas produced by them in a heat exchanger Water vapor, characterized that the heat exchanger from a known manner that the combustion gases from the combustion chamber (1) to the mixing chamber (10) leading pipe (7) surrounding the water tank (8) consists of a steam collecting dome (9), from which the line (12) of the steam to the mixing chamber (10) is branched off. 2. Gas-steam turbine system according to claim 1, characterized in that the Fuel gas and steam entry into the mixing chamber (10) through flap valves (11 and 13) are controlled. Considered publications:
German Auslegeschrift No. 1008 532;
Swiss Patent No. 220 292;
British Patent Nos. 149,926, 565,952. 1 sheet of drawings 509 600/129 7.65 © Bundesdruckerei Berlin