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Centrifugal governors' widest use was on steam engines during the Steam Age in the 19th century. They are also found on stationary internal combustion engines and variously fueled turbines , and in some modern striking clocks .
A governor, or speed limiter or controller, is a device used to measure and regulate the speed of a machine, such as an engine.. A classic example is the centrifugal governor, also known as the Watt or fly-ball governor on a reciprocating steam engine, which uses the effect of inertial force on rotating weights driven by the machine output shaft to regulate its speed by altering the input flow ...
Category: Steam engine governors. ... Cataract (beam engine) Centrifugal governor; W. Watt governor This page was last edited on 15 September 2015, at 13:47 ...
The variation of the steam consumption rate ṁ (kg/h) with the turbine load during throttle governing is linear and is given by the “willan’s line”. [1] The equation for the willan’s line is given by: ṁ=aL+C. Where a is the steam rate in kg/kWh, 'L' is the load on turbine in KW and C is no load steam consumption.
A key requirement for the high-speed steam engine was accurate control of a constant speed, even under a rapidly changing load. Although the control of steam engines via a centrifugal governor dates back to Watt, this control was inadequate. These early governors operated a throttle valve to control the flow of steam to the engine. This gives ...
1788 (): Watt builds the first steam engine to use a centrifugal governor for the Boulton & Watt Soho factory. [12] 1790 (): Nathan Read invented the tubular boiler and improved cylinder, devising the high-pressure steam engine.
Earlier engines with Watt's centrifugal governor and throttle valve become inefficient when operating at low power. The Richardson governor [17] was used for stationary and portable engines produced by his employers, Robey & Co. [18] This is a simple link valve gear controlled automatically by a centrifugal governor. Rather than the Stephenson ...
In November 1788 James Watt produced a design for a "fly ball" governor, titled "Centrifugal speed regulator", a device for automatically controlling the speed of a steam engine so that it would run at the same rate despite changes in the heat of the fire.