Showcases
Polzunov's steam engine
<space=1em><b>Russian inventor</b>
<space=1em>The world's first two-cylinder steam engine that does not require an auxiliary hydraulic drive was invented by a Russian mechanic from Yekaterinburg, Ivan Polzunov.
<space=1em>Polzunov developed a project for a steam engine with a capacity of <nobr>1.8 hp</nobr> in <nobr>1763</nobr> In January <nobr>1764</nobr> he began to create a machine that operated "by fire". The Central State Historical Archive of the USSR contains the original drawings of the steam engine with his personal signature.
<space=1em>A detailed explanatory note is attached to the drawings, compiled by the author in December <nobr>1765,</nobr> when Polzunov completed the construction of the steam engine.
<space=1em><b>A huge step forward</b>
<space=1em>Polzunov's machine was the world's first two-cylinder engine with the cylinders working on one common shaft, which allowed the engine to operate without any use of hydraulic power.
<space=1em>This was a huge step forward compared to the steam engines that existed at the time, which could not operate without an auxiliary hydraulic drive.
<space=1em>However, it was still a steam-atmospheric engine, that is, steam was used only to create a vacuum when it condensed in the cylinder, and the piston did useful work, descending under the action of atmospheric pressure.
<space=1em><nobr>Catherine II</nobr> was informed of Polzunov's project, she awarded him <nobr>400 rubles</nobr> and promoted him to captain-lieutenant.
<space=1em><b>Successful tests</b>
<space=1em>In <nobr>1764–1766</nobr> Polzunov designed a new steam engine to drive blast in smelting furnaces. The engine had a record power of <nobr>32 hp</nobr> for its time and for the first time made it possible to abandon water wheels in real factory production.
<space=1em>Polzunov died a week before the test run of the machine. It was tested by the master's students, paid for itself and even managed to make a profit. However, due to a breakdown after three months of operation, it was disassembled and replaced with a conventional hydraulic drive.
<space=1em>The operation of modern multi-cylinder engines is based on the principle used by Polzunov: the action of several cylinders on one shaft.
ID экспоната:
268
Галерея изображений:
http://dpmzdr.infomedia.digital/files/6b/07/s16b070161b165c8828631ba617459b3c75600be9e.jpg / http://dpmzdr.infomedia.digital/files/19/27/s11927b9de52a7b063b632e8812436b52381373c4a.jpg
Галерея изображений (оригинал):
http://dpmzdr.infomedia.digital/files/6b/07/6b070161b165c8828631ba617459b3c75600be9e.jpg / http://dpmzdr.infomedia.digital/files/19/27/1927b9de52a7b063b632e8812436b52381373c4a.jpg
Галерея изображений 2000:
http://dpmzdr.infomedia.digital/files/6b/07/s26b070161b165c8828631ba617459b3c75600be9e.jpg / http://dpmzdr.infomedia.digital/files/19/27/s21927b9de52a7b063b632e8812436b52381373c4a.jpg
Блоки описания:
[{"quote":"","title":"Russian inventor","images":[],"content":"The world's first two-cylinder steam engine that does not require an auxiliary hydraulic drive was invented by a Russian mechanic from Yekaterinburg, Ivan Polzunov.\r\n\r\n\r\nPolzunov developed a project for a steam engine with a capacity of 1.8 hp in 1763 In January 1764 he began to create a machine that operated \"by fire\". The Central State Historical Archive of the USSR contains the original drawings of the steam engine with his personal signature.\r\n\r\n\r\nA detailed explanatory note is attached to the drawings, compiled by the author in December 1765, when Polzunov completed the construction of the steam engine.","subtitle":""},{"quote":"","title":"","images":[],"content":"Polzunov's machine was the world's first two-cylinder engine with the cylinders working on one common shaft, which allowed the engine to operate without any use of hydraulic power.\r\n\r\n\r\nThis was a huge step forward compared to the steam engines that existed at the time, which could not operate without an auxiliary hydraulic drive.\r\n\r\n\r\nHowever, it was still a steam-atmospheric engine, that is, steam was used only to create a vacuum when it condensed in the cylinder, and the piston did useful work, descending under the action of atmospheric pressure.\r\n\r\n\r\nCatherine II was informed of Polzunov's project, she awarded him 400 rubles and promoted him to captain-lieutenant.","subtitle":"A huge step forward"},{"quote":"","title":"","images":[],"content":"In 1764–1766 Polzunov designed a new steam engine to drive blast in smelting furnaces. The engine had a record power of 32 hp for its time and for the first time made it possible to abandon water wheels in real factory production.\r\n\r\n\r\nPolzunov died a week before the test run of the machine. It was tested by the master's students, paid for itself and even managed to make a profit. However, due to a breakdown after three months of operation, it was disassembled and replaced with a conventional hydraulic drive.\r\n\r\n\r\nThe operation of modern multi-cylinder engines is based on the principle used by Polzunov: the action of several cylinders on one shaft.","subtitle":"Successful tests"}]
Модель (деталка):
Polzunov's steam engine
Заголовок (деталка):
Steam engine
Mnemonic code:
268
Code in external DB source:
18491
Name:
Polzunov's steam engine