Magnetic-impulse plants IM in drying spray systems
Research and production enterprise ‘MITEK’, Ltd ( Nikolaev) has
been specializing in the field of magnetic-impulse engineering and is the
leading designer and producer of magnetic-impulse plants of IM TU U3.01.19289902-170-98 type designed for prevention from collapse of bridging
and cleaning of metal hoppers and other metal surfaces from adhered
substances.
Method of cleaning, device to perform it as well as trade mark
MITEK® are registered in patent authorities of Ukraine and Russia (Patent
of Russia №2153403, Patents of Ukraine №44783, №28666, №28667,
№28820, №29040, №39269, №37190, №37191. Certificate for the trade
mark №17417, №97672, №7375. Quality of magnetic-impulse plants IM is
confirmed by the certificate of identification Ukrsepro (UA1.081.009094106).
In 2008 plants got Certificate of identification of CE on Directives
of security and electromagnetic compatibility.
Products of RPE “Mitek” were appropriated with the Sign of quality
“The Highest Test” and an enterprise was awarded with the diploma
“Ukraine-the best enterprisers” and is the laureate of competition “Metalprogress-2005” in a nomination “The Best innovation in area of production”.
Since 1993 an enterprise “MITEK” has produced and introduced
nearly 350 magnetic-impulse plants on different enterprises of Ukraine,
Russia, Belorussia, Kazakhstan, Slovakia. Among them there are
metallurgical combines of “Azovstal”, “ArcelorMittal Kryviy Rih”,
“Zaporozhstal”, “U.S.Steel, s.r.o. Kosice”, Alchevsky MC, Dneprovsky MC,
Enakyevsky MF, Donetsky MF, Zaporozhsky “Ukrgrafit” and “Abrasive
combine”, Cherepovetsky “Ammofos”, “Vorkutaugol”, Mykhaylovsky MC,
bakery integrated works of S.Petersburg, Kiev, Kharkov, Minsk,
confectionaries of Lugansk, Dnepropetrovsk, Donetsk, butter-cheese
factories , milk plants, mixed fodders factories and other enterprises.
Alongside with other areas magnetic-impulse plants IM are
successfully applied in drying spray systems. It is introduced more than
50 plants IM, used for clearing walls of drying chambers and cyclones
in drying spray plants such marks as А1-ОРЧ, А1-ОР2Ч, А1-ОР2Ч-1000,
А1-ОР3, Anhidro, etc.
Drying complexes made by «Kalinovsky machine-building
factory»,Ltd are serially completed by plants IM MITEK deliveries of which
take place both in Ukraine and outside its borders. Plants are implemented
and used successfully at such enterprises as cheese plants in Mirgorod,
Gadych, Akhtyrka, milk plants in Sumy, Litin, Kamenets-Podolsk, Mogilyov,
Romny, Ruzhan, butter-cheese combines in Troitsk, settlement Mamadysh,
settlement Baltasi (Tatarstan) and others.
The structure of magnetic-impulse plant IM is the following (
fig.1):
power block, control stand, control cable, high-voltage coaxial
cables, complete set of executive mechanisms ( inductor and
stalealuminum plate), connecting boxes.
Fig.1 Original appearance of magnetic-impulse plant IM
A power block is made as dust- and moisture-proof closet and
intended for forming of powerful impulses of current. The battery of
condensers is used as an impulsive energy source.
A power block (fig. 2) consists of charge device (CO), capacity store
of energy (SE), block of thyristor switchboards (TS), control and defence
systems. A power block is made multichannel, besides one or two
executive mechanisms can be connected through connecting boxes and
high-voltage coaxial cable to every channel. An executive mechanism
consists of inductor and stalealuminum or stalecopper plate. A control
stand (CS) is connected to the power block through the control cable.
Flow diagram of plant IM is shown on a fig.2
Fig.2
Flow diagram of plant IM
Installations IM are divided into types according to the size of
maximal working voltage: IM1 - to 1000V, IM2 - to 2000V, IM3 - to
3000V, IM4 - to 4000V, IM5 - to 5000V.
The structure of conditional denotation of types of plants IM is
presented on a fig.3:
IМX - XX - XX
Maximal worker voltage, KV
1,2,3,4,5
Capacity of condenser battery, mF
from..
от 0,4 до 1,8
Number of channels, items
from 1 to 16
Fig.3 Structure of conditional denotation of types of plants IM
The scheme of equipment of drying chambers and cyclones by
magnetic-impulse system of clearing on the basis of plant IM is
shown on fig. 4.
Fig. 4. System of clearing of walls of drying chamber and cyclones.
Collapse of adhered material is carried out as follows ( fig.5):
Fig.5 The Scheme of executive mechanisms of system of walls clearing of drying
chambers and cyclones on the basis of plant IM.
The stalealuminum plate is attached to a wall of the chamber (cyclone)
from the external side. Opposite the plate the inductor is fixed on the rigid
basis with a small air clearance (2-5 mm) concerning a plate.
The power block generates a powerful impulse of a current in a
winding of inductor. The magnetic field of inductor created by this current,
induces an impulse of a current in a plate. As a result of interaction of the
pulse currents proceeding on a winding of inductor and induced in a plate,
the plate renders pulse mechanical influence on a cleared wall that leads to
occurrence of local elastic deformation in a cleared surface, and in
thickness of the adhered material – to occurrence of voltage shift. Joint
action of these processes breaks integrity of the adhered material, destroys
adhesion of a material to a cleared surface and leads to collapse of a
material.
Force of mechanical influence and quantity of impulses are adjustable
and chosen sufficient for guaranteed collapse of adhered materials.
The plants of type IM1, IM2 are usually used for magnetic-impulse
systems of walls’ clearing of drying chambers and cyclones. The technical
characteristics are resulted in fig.6:
Technical descriptions of plants IM1, IM2
Type of plant
IM1, IM2
Power supply voltage, V
220(+22;-33)
Power frequency, Hz
50
Capacity, kW
from 0,5 to 1,6
Maximum voltage, kV
from 1 to 2
Capacity of storage battery, mF
from 0,4 to 1,8
Number of channels
from 1 to 16
Number of inductors in a channel, items
1 or 2
Charge rate, s
to 20
Mode of operation
manual and (or) automatic
For each type of drying spray systems the necessary quantity of
executive mechanisms of plants IM is defined.
For example, in a drying system A1-OРЧ the plant ИM1-1,2-11 with
allocation of six executive mechanisms on a drying chamber and five on
cyclones, one mechanism on each cyclone is applied (fig. 6).
Fig. 6.
In a drying system VRA-4 having 3 cyclones, a plant ИM2-1,2-9 (on
two executive mechanisms in the channel) with allocation of six executive
mechanisms on a cylindrical part of drying chamber and six executive
mechanisms on a cone part is recommended. 2 mechanisms are installed
on each cyclone (fig. 7).
Fig. 7.
In a drying system A1-OР2Ч a plant ИM2-1,2-8 with allocation of six
executive mechanisms on a cylindrical part of drying chamber and four on
a cone part is applied. One executive mechanism is installed on each
cyclone (fig. 8).
Fig. 8.
In a drying system А1-ОР2Ч-1000 a plant IM 2-1,2-12 with allocation
of eight executive mechanisms on a cylindrical part a drying chamber and
five on a cone part is applied. 2 executive mechanisms are installed on
four cyclones and one executive mechanism is installed on the fifth cyclone
( fig.9).
Fig. 9.
The long-term practice of operation of plants IM МIТEК® at the
various enterprises testifies to higher efficiency of a magnetic-impulse way
of walls’ clearing of drying chambers and cyclones in comparison with
traditionally applied pneumatic-and electromechanical hammers.
Besides, magnetic-impulse plants are economic in operation since
magnetic-impulse technologies are inherently power-saving.
Absence in executive mechanisms of plants IM МITEК® соbeating,
rotating and rubbing parts, presence of the fulfilled manufacturing
techniques of inductors, application of original circuit decisions and modern
element base, and also presence of a lot of protection against
supernumerary operating modes provide high reliability and durability of
system of magnetic-impulse collapse of the stuck materials.
Service life of plants IM according to TY У3.01-19289902-170-98 is not less than 10 years.
At timely repair-preventive maintenance term of operation is much
longer.
In view of features of technological process the functioning of plants
IM is possible both in manual and in automatic modes, with various
algorithms of inclusion in work in interface to the modern automated control
systems ( ACS) of technological processes.
Design IP54 and contactless impulse influence on a wall of the
hopper provides an opportunity of application of plants IM МITEК® in
premises of the raised danger.
In case of interest we are ready to consider technical and
organizational questions of delivery and implementation of plants IM
МITEК.
RPE “MITEK”, Ltd
Gorkogo str., 24-A, Nikolaev, 54018, Ukraine
phone/fax: +380 (512) 212193, phone: +380 (512), 446185
e-mail: info@mitek.com.ua
Director
Technical Director
Oleg Vladimirovich Matvienko
Sergey Pavlovich Bortkevich