Patent GB-191506297-A (GB)
Title: Improvements in and relating to Fluid Pressure Controlling Systems for Machines or Engines.
Inventor: HERR HERBERT THACKER
IPC: F16K17/00
Filed: 1915-04-27
Abstract: 6297. Herr, H. T. May 19, 1914, [Convention date]. Motor power plant.- In a fluid-pressure control system wherein a number of valves are adapted to control a number of engines or machines, a distributing device is provided so that the complete control of all the engines &c. may be invested, at will, in one valve, in more than one valve, or in all the valves. In a marine turbine installation, the ahead and the astern admission valves of the port and starboard turbines are operated by fluid-pressure relay motors which are completely controlled by any or all of a number of pressure-regulating valves, the control being transferable from one valve to another in case of damage, by a distributing-device which allows a master control, for example in the engineroom, and a remote bridge control. The master control 1, Fig. 2, comprises a distributing-device 4 associated with two pressure-regulating valves 5, 6 of the kind described in Specification 7980/14, which receive fluid at any desired pressure and deliver it at a determined pressure dependent upon the relative positions of the valve parts. The bridge control 2 comprises a distributing-device 64 associated with a similar pair of valves 5, 6. Figs. 6 and 7 show the ports in the seats of the distributing-valves 64, 4, which have the ports, ducts, and pockets shown in Fig. 4. The pressure fluid is admitted by a pipe 39 to a chamber 50, Fig. 2, in the valve 4 communicating with ports 51, 52, 53 adapted to register with ports 45, 44, 67 in the seat. The ports 45, 44 communicate with the valves 5, 6 of the master control 1, and these valves return the fluid at a regulated pressure to the valve 4 by the pipes 12 if the valves 5, 6 are set for ahead working, or by the pipes 13 for the astern working, the fluid being ultdmately delivered by the pipes 100, 101 for operating the relays actuating the ahead and astern admission valves of the starboard turbine, and by the pipes 102, 103 for the port turbine. The port 67 is connected by a pipe 68 with the bridge control valve 64, which delivers the fluid through ports 104, 99 to its associated valves 5, 6, which return the fluid at a regulated pressure for supply to the pipes 100, 101, 102, 103. By adjusting the positions of the valves 4, 64, the port and starboard turbines may be completely controlled (a) by the valves 5, 6 of the master control device, the valve 5 controlling the port turbine and the valve 6 the starboard turbine, or (b) by the valve 5 alone, or (c) by the valve 6 alone, or (d) by the valves 5, 6 of the bridge control device, or (e) by the bridge control valve 5 alone, or (f) by the bridge control 6 alone. By turning the valve 4 of the master control device 1 to the off position, fluid is also cut off from the bridge control device 2. Two or more bridge control devices may be associated with one master control device. Any number of engines or devices may be included in the system. A gauge 105, Fig. 2, indicates the available steam pressure of the turbine supply, and a gauge 106 indicates the available fluid pressure in the control system. A gauge 108 has two indicating-hands, one of which indicates the pressure in the pipe line 102, and the other in the pipe line 103; the position of the valve operating relays communicating with the pipes 102, 103 is thereby indicated, and the scale may be calibrated in revolutions per minute. A similar gauge 109 is used with the pipes 100, 101. Gauges 110, 111, adapted to be connected to dynamometers operating in connexion with the port and starboard engines respectively, indicate the power developed. The control system may be applied to any type of engine, for example to direct or alternating current motors, or to driven machines by controlling, for example, the operation of couplings &c.