Patent GB-673138-A (GB)
Title: Improvements in or relating to thermal power plant
IPC: F01K23/02
Filed: 1950-01-03
Abstract: 673,138. Hydraulic turbines. GLINKA, C. Jan. 3, 1950 [Nov. 22, 1948; Nov. 22, 1948]. No. 32010/49. Class 110(iii) A power plant comprises a chamber in which continuous combustion is carried out at high pressure, the gases being led in succession to two contrivances in each of which part of the energy is utilized and one of which effects conversion to kinetic energy through the movement of a column of liquid which drives a power engine. Fig. 1 shows a plant in which pulverized coal from a bin 1 is forced under high air pressure through a pipe 2 to a continuous combustion chamber 3. The high-pressure, high-temperature gases at 13 atmospheres 1400‹-1750‹C. expand in three or more chambers 7 driving down hoods 2 in succession, converting pressure energy into kinetic energy by forcing water 14 at high velocity to drive a turbine 23. The gases may be freed from dust by any means. A water-cooled valve 9 allows passage of the gases into the chambers 7 which are lined. with a fine-pored material, preferably ceramic. The hoods 12 may float or, as shown, have guide rods 15. The water is discharged through each branch 17 by way of a valve 13 which has an opening for each chamber 7 and, according to the valve position, the branches are put into communication either with a central space 18, with a space 19, or with a conduit 33. A stream of high-velocity water leaves a nozzle 20 and entrains water from a space 19 under pressure of the gas expansion. The combined liquids pass through a conduit 22 leading to the turbine 23. The discharge from the turbine passes to a pipe 33 and back to the chamber 7 by way of the valve. Gases from the chambers 7, when the valves 9 are open, are forced through a conduit 11 and heat exchanger 24 to a chimney 25. They heat air which has been compressed in a three-stage compressor 27, 28, 29, having inter-coolers 31, 32, the heated air driving a turbine 30. The exhaust from the latter supplies pressure to the coal bin 1 and air to the combustion chamber 3 at a temperature of approximately 200 ‹C. Preferably valves 8 and 13 are coupled together for joint operation. Fig. 3 shows a plant with a turbine-driven compressor 57 supplying compressed air to a coal bin 35, and a combustion chamber 38 which supplies high-temperature, high-pressure gas to a drying plant 39 of the known annulardisc type. This comprises a number of discs 41 forming trays with gaps, the material to be dried passing from top to bottom through the dryer from an inlet 44 to a discharge 45. The parts 44, 45 are fitted with air locks in view of the internal pressure. The gases enter through ports 46, 47, 48 and rotors 42, on a shaft 43, cause the gases to circulate. The gases then pass along a pipe 49 through nozzles 51 and drive water up pipes 53 to a header tank 54 where the gases separate out. The water flows down a duct 55 to a turbine 56, the discharge entering a tank 52 without back pressure. Fig. 4 shows another arrangement of water turbine in which water is driven up pipes 63. Due to the bends 65, the water and gas separate centrifugally, the water being forced through nozzles 66 to drive a Pelton wheel 67. Corrosion-proof coating may be used on parts of the water turbine.