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For very large plate
heat exchangers with
several hundred plates
and high pressure units,
using any type of manual
wrench can be a
difficult task. For
these units and also
PHE's that are opened
frequently, you may want
to consider our
hydraulic closing
system. Our system uses
four center hole
cylinders, which are
positioned at the
corners of the moveable
frame plate. The system
is used to both open and
close the heat
exchanger. Each cylinder
will deliver 60 tons of
force with a total of
three inches of travel,
so your plate heat
exchanger is opened or
closed 3 inches at a
time by the push of a
button. |
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Shown here, our system is used
to close the Tranter UFX-205
heat exchangers at Foxwoods
Casino. 711 plates are easily
compressed to a final closing
dimension of 106".
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Our system is designed
for plate heat
exchangers that use 2"
diameter closing bolts
with 80mm or 3-1/8"
(across the flats) nut
sizes. Our system
includes the following:
- One 10,000 psi
hydraulic pump
complete with
pressure gauge and
valve manifold.
- Four, single
acting, center hole
hydraulic
cylinders.
- Four 20', 10,000
psi hydraulic hoses.
- Four 6" support
plates.
- One nut spinning
system, includes
cordless right angle
drill.
- Two measuring
tools.
- Two magnetic tip
tape measures.
- Two bolt
retaining straps.
- One heavy duty
metal storage box.
- One complete
instruction book.
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Our system can be adapted to
work on most heat exchanger
makes and models. Because of the
high pressures developed in
using our hydraulic system, the
most important issue is that of
safety. Specifically, the frame
plates must remain as parallel
to each other as possible
throughout the procedure, the
closing bolts must be securely
in place and the cylinders must
be positioned firmly against the
moveable frame plate. The
following accessories are
available to ensure that the
system operates properly.
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Plate heat exchangers
use a variety of closing
bolt sizes. Shown here
are cylinder bore
reducers for 1-3/4"
diameter bolts. The
bore reducers are
installed to ensure that
the bolts are centered
and to protect the base
of the cylinders from
damage.
The
available sizes are as
follows:
- 1-3/4" (can also
be used on 1-5/8"
diameter bolts and
M42 metric bolts).
- 1-1/2" (can also
be used on 1-3/8"
diameter bolts and
M36 metric bolts).
- 1-1/4" (can also
be used on 1-1/8"
diameter bolts and
M30 metric bolts).
- 1" (can also be
used on 7/8"
diameter bolts and
M24 metric bolts).
Sold
separately as a set of
four. |
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To open and close your plate
heat exchanger using our system,
the cylinders are positioned
against the moveable frame plate
with the nuts secured behind
them. To accomplish this, the
nuts are first removed, the
cylinders are installed and the
nuts are spun back on. To help
speed up this process, we've
included a nut spinning tool,
which uses a right angle drill.
This quickly spins the nuts off
and on the selected closing
bolts.
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The tool is sized at
80mm to fit most of the
larger Alfa Laval models
and a 3-1/8" nut size.
Reducing inserts can be
installed into the 80mm
pulley for smaller nut
sizes. The inserts are
retained in the 80mm
pulley by four M4 x 20mm
set screws, which use a
2mm key. The available
sizes of reducing
inserts are as follows:
- 2-3/4"
- 2-9/16"(65mm)
- 2-7/16"
- 2-3/8"(60mm)
- 2-3/16"(55mm)
- 2"(50mm)
- 1-13/16"(46mm)
- 1-5/8"
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Please visit our
shopping cart page for new
insert sizes that will soon be
available.
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Most Alfa Laval models
use special locking
collars on the frame
plates. Our shim kit
provides proper bolt
alignment and use of our
system. Specify 1-1/2"
or 2" diameter closing
bolt size.
The bolt shims keep
the locking collars
firmly in place, which
allows for easier
opening and closing.
Also, the closing bolts
are centered in the
slots. |
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Other adapter pieces may be
required depending upon the
design of your heat exchanger.
Our hydraulic
closing system can also be used
on heat exchangers that use
larger than 2" bolts. This is
accomplished by substituting 2"
bolts in place of the larger
bolts.
We recommend grade B7 (AISI 4140
alloy steel) threaded rod with
grade 2H (ASTM A194) nuts
(3-1/8" across the flats)
. In most cases, the original
bolts will have to be replaced
for operation once the final
closing dimension is reached.
Please feel free to call our
office with any questions you
may have. |
