DE1626155A1 - Control device for combustion and steam turbine systems arranged on a shaft - Google Patents

Description

Prvni brnenska strojima, Zavody Klementa Gottwalda, narodnx podnik, Brno, (GSSR)

Control device for arranged on a shaft. Combustion and steam turbine plants.

The invention relates to a device for controlling combustion and steam turbine systems arranged on a shaft.

Various production facilities in the chemical industry, smelting works and the like. Need for their Operation of compressed air, which in its passage through these production requirements in the form of on considerably high temperature heated, or with combustible Substances enriched exhaust gases is exhausted. Such systems can be used with advantage

109816/0381

original

Combine a combustion turbine, the compressor of which supplies the compressed air, the turbine powered by hot exhaust gases from these systems is burned, or the exhaust gases enriched with combustible substances in the combustion chamber will. The turbine drives the compressor and gives excess power to the electrical one Generator off.

In various cases, technological steam is also required and therefore the system can still be converted a steam turbine, which is arranged on a shaft with the "combustion turbine" and works as a starting motor when starting up the entire system.

The object of the invention is to provide a simple, robust device for controlling and regulating such a device To create a system, which a unit for the generator drive and the supply of compressed air in a technological facility forms.

This object is achieved in that on the drilling line of the primary pressure-adjusted oil three pressure transducers are connected so that the first Pressure transducer the first secondary pressure-adjusted oil to operate the air overflow valve, the second pressure transducer, the second secondary di% ok oil to operate the fuel control valve and the third pressure transducer the third secondary di% tuned releases oil to operate the steam control valve,

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The following is an exemplary embodiment of the invention with reference to the attached drawing, which is a scheme & ildT der circuit of the invention Hegel organs shows, described in more detail. ·

The unit consists of a turbine 1, a compressor 2, a back pressure steam turbine 3, a generator 4 and a start-up combustion chamber 5. The output of the compressor 2 is separated from the technological device 6 by the slide 7. The air supply into the start-up combustion chamber 5 is regulated by a remote-controlled slide 8. in the An overflow valve 9 is arranged around the slide 8. The control system is hydraulic and works on the principle of pressurized oil. It is supplied with pressure oil, which is supplied by a pump 10 via a diaphragm 11 to the speed controller 12 and to three pressure transducers 13, 14 ». 15 over a Orifice 19 to the fuel start-up valve 21 and above an aperture 22 to the exhaust gas temperature regulator 23, 24 upstream of the turbine 1 and to the overflow valve 9 will.

The control device works as follows:

The speed regulator 12 modulates the primary di% ckgewimmte oil I, which is behind the diaphragm 11 the pressure transducer 13, 14 »15 regulates. The first pressure transducer 13 modulates the first secondary dujrckge Oil II, the second pressure transducer 14, the second secondary pressure-tuned oil II and the third pressure transducer 15 the third secondary pressurized oil IV.

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When starting the unit, the pressure of the primary pressure-adjusted oil I is the pressure of the through the pump 10 supplied control oil equal and the fuel control valve 21 is controlled by the pressure change of the second secondary pressure-adjusted oil IV by changing over the pressure regulator 17 regulated. This begins when the machine control is taken over by the speed controller 12 " first primary pressure-adjusted oil I via the second pressure transducer 14 and the third pressure transducer 15 the second and third secondary pressure-adjusted OIL III and IV and thereby also the fuel control valve 21 and steam control valve 18 to be operated. The third Pressure converter 15 is set so that at the nominal speed of the start-up combustion chamber 5 at fully open slide 8 and when fully closed slide 7 working unit dojs steam control valve 18 is closed or only a little open for small amounts of cooling steam. The first pressure transducer 13 is switched to the position permitting the closing of the overflow valve 9.

Through the opening of the slide 7, some of the air from the outlet of the compressor 2 begins to enter the technological Device 6 to flow and by gradually closing the slide 8, this amount of air is greater. The technological device 6 is put into operation and the exhaust gases flowing from it are in the exit part of the start-up combustion chamber 5 with the exhaust gases emerging from this chamber or after switching off the fuel supply with air mixed which fuel through the fuel control valve 21 is fed. As soon as the nominal air = -

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ORIGINAL INSPECTED

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amount reached in the technological device 6 and the fuel supply to the combustion chamber 5 is closed, the speed controller is in a position changed, in which it limits the maximum speed in the event of spontaneous shutdown of the generator 4 from the network and the first pressure transducer 13 is switched to the working position. The cruise control 12 actuates the overflow valve 9 via the first pressure transducer 13 when the generator is switched off from the network. The overflow valve 9 is also operated by the exhaust gas temperature controller 23, 24, which the Pressure of the first secondary pressure-adjusted oil II after reaching the set exhaust gas temperature of the turbine 1 regulates directly.

The output of the steam turbine 3 is regulated with the steam pressure regulator 17, which regulates the pressure of the third secondary pressure-adjusted oil IV which actuates the steam regulating valve 18. When the generator 4 is switched off spontaneously from the network, the speed controller 12 regulates the third pressure transducer 15 by converting the pressure of the primary pressure-controlled oil I in such a way that it only increases the pressure of the third secondary pressure-controlled oil 4 after the flow into the steam turbine 3 has been completed through the steam control valve 18 haabsetzt and the first pressure transducer 13 reduces the pressure of the first secondary pressure-adjusted oil II to the value for which the overflow valve 9 allows such an amount of air to flow over , which sets the exhaust gas temperature in front of the turbine I for the purpose of keeping the speed of the whole unit constant at a constant value. This mutual attitude dee

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the first pressure transducer 13 and the third pressure transducer 15 limits the delivery of compressed air to the technological facility to the slightest extent 6 in the period in which the generator 4 is not able to use the excess power of the unit to take over.

- patent claims -

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ORIGINAL INSPECTED

Claims (1)

ι ς ο C: ι he t? - 7 - Patent claims 1. Control facility for on a shaft arranged combustion and steam turbine plants, which form a unit for driving a generator and the supply of compressed air in a technological means, said speed controller abgiht the primary pressure tuned oil to pressure transducer operation of the individual control paths, characterized in that _t that for For the purpose of common regulation of the combustion system and the steam turbine in the pipeline of the primary pressure-adjusted oil, three pressure transducers (13 * 14,15) are connected in parallel in such a way that the first pressure transducer (13) uses the first secondary pressure-adjusted oil (IX) to operate the air overflow valve (9 ), the second pressure transducer (14), the second ^s lxuckgestimmte oil (III) for actuating the fuel control valves (21) and the third pressure transducer (15) the third secondary dnckgestimmte oil (IV) proposed for actuating the steam-regulating valve (18 (. 2. Control device according to claim 1, characterized in that for the purpose of influencing the exhaust gas temperature at the inlet parts of the exhaust gases in the turbine (1) the regulator (23,24) for actuating the air overflow valve (9) in the pipeline is arranged between the compressor (2) and the turbine (1). August 24, 1967/331 109816/0381 originally inspected Blank page