Patent GB-191100314-A (GB)
Title: Improvements in Liquid Piston Explosion Engines for Raising Liquid and like purposes.
Filed: 1911-01-05
Granted: 1912-01-05
Abstract: 314. Siemens Bros. Dynamo Works, and Vernon, W. F. Jan. 5, Direct explosion apparatus.- Relates to direct explosion apparatus for raising liquids of the type described in Specifications 2 0 , 7 3 6 / 0 6 , 1 8 , 5 9 4 / 0 7, 1 8 , 5 9 5 / 0 7 , and 27,753/10, and consists in expelling or withdrawing during the outward flow of the liquid along the delivery pipe substantially the whole of the products of combustion at one end of the combustion chamber, and replacing them by air or combustible mixture entering at the other end of the combustion chamber, the fresh charge being compressed on the return flow of the water column. In the arrangement shown in Fig. 1, the products of combustion are drawn off from the bottom of the explosion chamber 1 through ports 9 as soon as the descent of the float 6 causes the resilient seat 7 to uncover such ports. The withdrawal of the products is in this case effected by the downward rush through the pipes 10 of the small body of water remaining in the combustion chamber after the float 6 has closed the main outlet to the delivery pipe 2. As the products of combustion escape through the ports 9, air is drawn in to take their place through the valve 3, which has a stem 11 passing freely through the lever 12 and carrying a collar 13. As soon as the collar 13 comes into contact with the lever 12, the gas admission valve 4 is opened and a charge of gas drawn in. The volume of the charge may be regulated by varying the position of the collar. On the return stroke of the water in the delivery pipe 2 the air in the lower part of the combustion chamber is expelled through the exhaust valve 17 until this is closed by the impact of the liquid, whereupon the mixed air and gas in the top of the chamber are compressed ready for the next explosion. In the arrangement shown in Fig. 4, the products of combustion are expelled through a port 47 at the top of the chamber by compressed air introduced through ports 9 at the bottom. The supply of compressed air may be derived from a bellows pump 53 operated by the fluctuations of pressure in the delivery pipe 2, and the combustible gas may be generated in a vaporizing-chamber 36 from oil injected by a pump 41 operated by the fluctuations of pressure in the chamber 1. The needle-valve 37 and also the exhaust valve 47 are closed during the compression and explosion periods. A spring buffer 35 is employed to prevent the float 6 from coming into contact with the top of the chamber. In a third arrangement, shown in Fig. 6, the float is dispensed with and large ports 69 are formed in the walls of the chamber communicating with a water - supply tank 64 of limited capacity. At the termination of the explosion stroke the rush of fluid in the delivery pipe 2 reduces the pressure below atmospheric, whereupon the valves 67 open and water flows through the lower ports 69, while products of combustion enter the tank 64 through the upper ports. Air is simultaneously drawn into the top part of the chamber 1, and finally a charge of gas, whereupon the water in the delivery pipe 2 returns, closes the valves 67, and compresses the fresh charge The products of combustion are expelled through the valve 65 by fresh supply liquid flowing in through the pipe 66.