The Steam Injector
A theoretical and practical treatise on the design and operation of injectors and on the flow of fluids through and the design of nozzles.
Forfatter: V. A. B. Hughes
År: 1912
Forlag: The Technical Publishing Company Limited
Sted: London
Sider: 145
UDK: 621.176
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OVERFLOW ARRANGEMENTS. 51
be dealt with a very large overflow area was necessary
(when the injector was starting) near to the inlet end of
the combining nozzle, where a vacuous condition exists
during normal working.
The solution of the problem lay in the provision of means
in the combining nozzle that would open and provide a
large area for overflow purposes but close during normal
ra
Fig. 28.
working, when the nozzle would present an unbroken
passage for the jet flowing therethrough.
One form of the first proposal on the above lines is
illustrated at fig-. 26. When the injector is starting the
hinged flap a moves outwardly about its pivot pin, and so
provides a large area for the free escape of the contents
of the combining nozzle, but when it is working normally