Manufacturers Index - De Laval Steam Turbine Co.
De Laval Steam Turbine Co.
Trenton, NJ, U.S.A.
Manufacturer Class:
Steam and Gas Engines
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569,834
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Oct. 20, 1896
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Governor for Motors
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Gustaf P. De Laval |
, Sweden |
Patented in Sweden, No. 6,008, dated June 22, 1894; in Germany, No. 84,915, dated July 2, 1894; in England, No. 1,418, dated June 22, 1894; in France, No. 243,832, dated December 21, 1394; in Belgium, 113,301, dated December 21, 1894; in Spain, No. 10,757, dated February 6, 1895; in Switzerland, No. 9,800, dated De- cember21, 1894; in Norway, No. 4,169, dated December 21, 1894; in Denmark, No. 119, dated July 17, 1895; in Italy, No. 37,826, dated December 31, 1894; in Austria, No. 3,435, dated September 23, 1895, and in Hungary, No. 1,985, dated January 18, 1895.
Abstract:
For the purpose of regulating the supply of power to steam-motors a piston movable in a cylinder may be provided, said piston in all positions being kept in equilibrium by the following pressures, namely: on one side by the available steam-pressure and on the other side by the pressure of a fluid passing through the cylinder, together with the pressure of a spring. The piston is connected with the steam-admission mechanism, while the motor-governor mechanism is combined with a throttling device which determines the pressure action of the said fluid upon the piston. T1he steam-pressure thus balances the spring-pres 35 sure and the liquid-pressure. As, however, during work the governor mechanism produces rather large variations in the liquid-pressure, the difference between the steam-pressure on one side of the piston and the liquid-pressure on the other side of the piston may become rather considerable, the consequence being a leakage of steam from the steam-space to the liquid-space. This leakage might be partly obviated by the use of a very deep piston, but such an one would work hard, and it is of importance for obtaining a quick and certain regulation that the piston should work with great ease.
Claim:
In regulating means for steam-motors, tile combination of a cylinder, constructed with steam and liquid inlets and outlets, a piston guided in the cylinder and provided with an annular recess at a point intermediate of its ends, throttling means, inserted in the outlet-conduit for the liquid and adapted to be acted on by the governor of the motor, and a spring, said annular recess being adapted to receive liquid at approximately the same pressure as that of the steam, and said piston, at one side, being adapted to be acted on by the steam-pressure, and at the other by that of the combined spring and liquid pressures. |
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