GB410544A - Improvements in or relating to gas turbine plants - Google Patents

Abstract

410,544. Gas-turbine plant. TENNANT, W. J., 111, Hatton Garden, London.-(Aktiebolaget Milo; 32, Kungsgatan, Stockholm.) Dec. 15, 1932, No. 35579. [Class 110 (iii).] In a gas-turbine plant water or steam is injected into the compressed air which is then passed through a regenerator using the exhaust gases of the turbine before being admitted to the combustion chamber supplying the turbine. Fig. 3 shows the application to a transportable plant. It comprises a double-rotation turbine 1 driving compressors 2, 3 arranged in series, and water and oil pumps 12, 18, and also a double-rotation turbine 4 driving electric generators 5, 6. Air drawn in at 7 is compressed, preferably adiabatically, in the compressors 2, 3, and passes to a cooler 9 into which water from the pump 12 is sprayed. It is then heated in a regenerator 15 by the exhaust gases, and is led to an oil-fired combustion chamber 17 and thence to the turbines by conduits 21, 22. Fig. 5 shows an arrangement suitable for electric ship propulsion. The power turbine 30 drives generators 34, 35, which feed the motor on the propeller shaft, and also primary compressors 70, 36. The compressor 70 is clutched-in only for high speeds, the normal air-inlet damper 43 being then closed. From the compressor 36 the air passes through a sprayer 45, compressors 40, 39, sprayer 49, regenerator 51, combustion chamber 53, turbine 31, (which drives the compressors 39, 40), and finally through a second combustion chamber 57 to the power turbine 30. The exhaust of this turbine is passed through the regenerator 51. The water may be heated or converted into steam in a second regenerator before being injected into the air. In the arrangement shown in Fig. 8, the turbine T drives two water-cooled compressors K<1>, K<2> and a generator H. The cooling water for the compressor K<1> is supplied by a pump P<1>, and a pump P<2> supplies water to the first injection chamber O<1> and also to the cooler X<2> of the compressor K<2>. This water passes through a regenerator R<2> to a second injection chamber O<2> in the air line. This air passes through a regenerator R<1> to the combustion chamber S. Compressed air may be used for starting.