Nikita Gritsenko Master of the faculty of powerengineering and automation
Speciality - «Mining machines»
Scientific adviser: Oleg Shabaev, candidate of technical sciences, assistant professor.
Subject: «Technique of designing of modern axial fans. Optimisation of the axial mine fan of
main airing ВО21/14»
Pneumatic
machines more and more frequent by find application in all spheres of
life
activity. The range of their application is quite wide and extends from
light
industry to heavy engineering. The demand in such machines is great
enough.One of main
places in the list of facilities for moving air is taken by
ventilators. Wide
their application is conditioned by the constantly growing requirements
in
terms of labour conditions and protection of environment. It is the
ventilators
that are able to provide ventilation of such harmful productions, like
metallurgical combines, mines, where the state of atmosphere is
especially
heavy.
In same its
turn permanent increase of cost of power mediums and metal
substantially
multiplies the initial cost of production of ventilators, and
exploitation
expenses as well. For the development of a ventilator, its model tests,
introduction in production substantial quantity of time is spent, that
it is
not possible in modern terms. This problem can be solve, if modern
computer
technologies are used in researche and planning of new machines. The
ventilators designed before don’t always meet the
requirements of market.
Consequently, there is a necessity in creation of machines which would
fully
correspond to the tasks set. New ventilators must:
-
satisfy
the forecast field of the vent modes;
-
be
economical;
-
meet
sanitary standards;
-
be
compact, be light durable, portable, reliable in work and simple in
service.
Therefore
research and improvement of ventilators by means of computer design, is
an
actual task.
Purpose and research
tasks
Purpose of
the given work is development of a new, improved axial ventilator of
the
generalindustrial setting.
For
achievement of this purpose the following tasks are to be solved:
-
to
conduct the analysis of domestoc and foreign analogues;
-
to carry
out aerodynamic analysyses (computation) of a ventilator;
-
on the
results the computation to build the solid model of machine through the
software product SolidWorks;
-
to
produce the designs of working process of a ventilator in the
FlowVision
software package;
-
to
conduct the obtained data analysis;
-
on the
basis of the obtained results to develop the engineering method of
computation
of axial ventilators through computer.
Scientific novelty
Today's
industry in many has been using old approaches at planning of
ventilators. In
most cases the development process of new or improvement of already
existing
machine is produced by a hand, and verification of the obtained results
is
carried out by the tests on natural pattern, that considerably
increases the
initial cost of product. 
Practical value
The
value
of work is as following:
-
a new,
improved axial ventilator of the general industrial purpose is
developed;
-
the
method of the automated design of axial ventilator, allowing to lower
the time
expenditures on planning, is applied;
-
the
results of the work can be used in the future for designing of
ventilators, as
well as in an educational process.
Unsolved problems
It
should
be noted:
-
at
planning of axial ventilators the formation of the so-called
«cavity» on due to
discharge characteristic, that lowers the region of operating condition
of
ventilator, and also some high level of noise;
-
at the
designing it is the complication of the task of computation net at
which
exactness of computation doesn’t depend on if any more.
Current developments
and plans
-
the
analysis of existent structural decisions of axial ventilators is
conducted;
-
reference
aerodynamic computation of ventilator is produced;
-
work on
development of solid computer model of the developed general industrial
axial
ventilator is conducted.
-
carrying
out of model tests of the developed ventilator is planned.
Conclusion
As it is
evident from many works of scientists the basic problem of development
of new
axial ventilators with necessary parameters is absence of single method
of
their planning. Also the problem of convergence of theoretical and
experimental
data, due to by insufficient knowledges of processes of flowing in a
machine,
is of no less unimportance.
Литература
1.Ушаков К.А.
Промышленная аэродинамика. Сборник №12. Вентиляторы и воздухопроводы
1959. Твердый переплет. 252 с
2.Насосы, вентиляторы и компрессоры.
Шерстюк А. Н.
Учеб. пособие для втузов. М., «Высшая школа», 1972.
344 с. с илл.