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14-10-2017, 08:16 PM

I am surya i would get beam engine miniproject documentasion plz send my mail ...suribabupedavegi0804@ gmail.com

jaseela123d · 24-10-2017, 09:57 AM

A beam motor is a type of steam engine where a pivoted upper beam is used to apply the force from a vertical piston to a vertical connecting rod. This configuration, with the motor that directly drives a pump, was first used by Thomas Newcomen around 1705 to remove water from the mines in Cornwall. Engine efficiency was improved by engineers such as James Watt, who added a separate condenser, Jonathan Hornblower and Arthur Woolf who made the cylinders, and William McNaught (Glasgow) who devised a method for combining an existing engine. Beam engines were first used to pump water from the mines or into the canals, but could be used to pump water to supplement the flow of a hydraulic wheel that drives a mill.

The rotary beam motor is a later beam motor design where the connecting rod drives a flywheel, by means of a crank (or, historically, by means of a sun and a planetary gear). These beam motors could be used to directly feed the line shaft into a mill. They could also be used to power steam boats. The first beam motors were powered by water and were used to pump water from the mines. A preserved example can be seen in Wanlockhead in Scotland.

Beam engines were widely used to power bombs in the English channel system when it was expanded by locks early in the Industrial Revolution, and also to drain water from the mines in the same period and as winding motors.

The first steam-related beam motor was developed by Thomas Newcomen. This was not, strictly speaking, steam driven, as the steam introduced under the piston was condensed to create a partial vacuum, thus allowing atmospheric pressure to push down the piston. Therefore, it was called Atmospheric Engine. The atmospheric engine Newcomen was adopted by many mines in Cornwall and elsewhere, but was relatively inefficient and consumed a large amount of fuel. The engine was upgraded by John Smeaton, but James Watt solved the major inefficiencies of the Newcomen engine in its Watt steam engine by adding a separate condenser, which allows the cylinder to remain hot. Technically this was still an atmospheric engine until (in later patents) it enclosed the top of the cylinder, introducing steam to also push the piston down. This turned it into a true steam engine and could be said to confirm it as the inventor of the steam engine. He also patented the centrifugal governor and the parallel movement. the latter allowed the replacement of chains around an archhead and, therefore, allowed its use as a rotary engine.

Their patents remained valid until the beginning of the 19th century and some say that this delayed development. However, in reality the development had been continuous by others and at the end of the patent period there was an explosion of new ideas and improvements. Watt's beam motors were used commercially in much larger quantities and many continued to run for 100 years or more.

Watt had patents on key aspects of the design of his engine, but his rotary engine was equally restricted by the patent of another simple crank. The engine of the beam was considerably improved and expanded in the areas rich in tin and copper of the southwest of England, which allowed the drainage of the deep mines that existed there. As a result, Cornwall beam motors became world-famous as they remained among the most massive beam motors ever built.

Due to the number of patents on various parts of the engines and the consequences of patent infringements, there are examples of Beam Engines with no manufacturer name on either side (Hollycombe Steam Collection).

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