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Pipeline
integral electric heater
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Applicable scope
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System composition
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Principle of work
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Model explanation and performance characteristic
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The installment explained
1、Applicable scope
This product
is suitable for the pipeline in
the gas, the liquid medium
heating or the temperature
maintenance (heat preservation
and frostproof).
① Through installs into the
mineral insulation heating
electric cable does in the
pipe-line equipment the heat
source, the system heating speed
and the efficiency can be able
to enhance greatly.This heating
technology is widely applied in
profession pipe-line equipments
and so on the oil field,
chemical industry mounts the
nature fuel oils the
transmission and the correlation
conduit heating aspect, is
suitable especially in the oil
well during low childbirth time
loses the pipeline the heating,
the promotion crude oil in
pipeline flowing, reduces the
well pressure, the guarantee
extraction quantity.
② Internal Canada follows the
hot system some superiority:
→ When
replacement heating cable system
does not need to replace the
heat insulation heat
preservation installment
→ Has
the very high security in the
fire protection aspect
→
Heats up the electric cable not
to be able to look like the
external instrumentation to rust
equally
→ Can
assemble in underground or by
water immersion no pipeline in
→ Can
reduce correlation
mechanicalness damage
→ Can
provide the short-time highly
effective heating function
2、System composition
1st,
in sets at the electric heater
This part is uses in the
pipeline the dielectric heating
and the heat preservation main
equipment, is the pure
resistance load, after receives
a telegram, transforms directly
the electrical energy for the
heat energy provides to the
environmental media, the
realization elevates temperature
or the heat preservation.
Its main body insulates the (MI)
heating electric cable by the
mineral or the heating, the
temperature measurement
integration electric cable
constitution, prefabricates the
heating or the integrated
component after the factory,
connects the temperature control
box the output power source to
carry on the work directly, the
end is spherical for the circle,
is advantageous for penetrates
in the petroleum pipe line to
install.The MI heating electric
cable and the integrated
electric cable inside and out by
the Jin Shuxian core, the
mineral insulating layer and the
metal protective covering
constitute.Its metal protective
covering may directly with the
pipeline in medium contact,
according to the medium to the
metal material corrosion
situation and the medium craft
temperature, the metal
protective covering material
which may select mainly has the
copper and the stainless steel,
the copper protective covering
electric cable highest
continually operating
temperature for +250℃, the
stainless steel for +800℃.Is
lower than +150℃ the situation
regarding the temperature,
stemming from certain special
corrosion preventing goal, may
use has outside the plastic the
protective covering MI heating
electric cable or the integrated
electric cable.
Regarding surpasses 6KV in to
set at the electric heater, is
balanced for the consideration
electric power, the usual
suggestion uses the three-phase
heating.
2nd, temperature
measurement electric cable
The temperature measurement
electric cable is uses in the
pipeline the medium temperature
control necessary part, its
structure and the MI heating
electric cable are similar,
inside and out by the
temperature measurement line
core, the mineral insulating
layer and the metal protective
covering constitutes, its
protective covering material is
usually the stainless steel.
3rd, in sets at the
auxiliary heater
Because heats up the electric
cable and the integrated
electric cable linearity gives
off heat the power is balanced,
when serves as in the pipeline
the medium, is specially the
thick liquid medium heating, the
medium entrance section
temperature often has the higher
technological requirement, by
now needed to set in the
entrance section addition
assists the heater to supplement
the quantity of heat, reduced
the initial section medium the
transportation resistance.
3、Principle of work
In sets at
the heater is the pure
resistance load, the line core
circular telegram transforms the
electrical energy into the heat
energy, thus carries on the heat
change after the metal
protective covering with the
environmental media the
realization medium elevation of
temperature or the heat
preservation, the complete
process completes in the
pipeline, therefore the thermal
efficiency is extremely
high.Electricity functional
block diagram as shown in Figure
2.
4、Model explanation and performance characteristic
1st,
the model (in sets at electric
heater specification showing)
2nd, performance
characteristic
The thermal efficiency is high:
In sets at the heater for the
pure resistance load, may
transform completely the
electrical energy as the heat
energy.At the same time, in the
heating element puts in the
pipeline, with internal medium
full contact, the heat energy
which produces completely for
the environmental media
absorption, therefore the
thermal efficiency is high.
The performance is stable: In
sets at the heater and the
temperature measurement electric
cable constitution material is
completely the inorganic
material, under its fixed
application temperature, its own
physics and chemistry
performance is quite stable.
The life is long: In sets at the
heater and the temperature
measurement electric cable
inorganic constitution material
does not exist gets older,
selects appropriately bears the
protective covering material
which the medium corrodes to be
possible to guarantee its
long-term service life for 30
years.
Installs conveniently: In the
product puts in the pipeline not
to need the interior to be
fixed, exterior connection is
simple.
5、The installment explained
A,
installs the step
1, opens one on the
designation oil pipeline, the
polish welding scarf and the
burr in order to the branch
connection, the hole size take
just sets at into the branch as
suitably.
2, the assembly puts the
coil.Inspects all in to set at
the electric heater equipment
qualified performance.
3, will become the circle
in to set at the heater and the
temperature measurement electric
cable distinction cover disc
lays aside again on puts on the
coil, penetrates first the
heater electric cable round
sphere end on the branch flange
the bolt hole, and provides
clothing from connection, after
but directs the electric cable
to enter on the oil pipeline to
open the hole.
4, revolving puts the
coil in, emits slowly sets at
the heater electric cable and
alignment, causes it to
penetrate the pipeline slowly.
5, when the heater
electric cable enters the tube
to the design temperature
measurement electric cable ball
end position, suspends it to put
the line, should penetrate the
temperature measurement electric
cable after branch flange on
another bolt hole the
branch.After the temperature
measurement electric cable
leaves the branch, in leaves the
branch place to bind the
temperature measurement electric
cable has fixedly on the heater
electric cable simultaneously
the poling, binds the spacing
take 20cm as suitable, until on
the one hand the poling on the
other hand binds completes.
6, tests once more sets
at the heater and the
temperature measurement electric
cable insulation.
7, in will set at the
heater and on the temperature
measurement electric cable (in
packing case) connects in
connecting box post according to
the blueprint.
8, takes place the
installment the temperature
control box.
9, between placing
temperature control box and
connecting box electric
cable.Power cable should act
according to its
current-carrying capacity and
the net load nominal current
choice appropriate section and
the core number.
B, installment matters
needing attention
1, when heating cable
inlet with the pipeline included
angle should completely when is
bigger than 90 degrees in order
to help to put in.
2, the pass heats up the
electric cable enters when the
pipeline should be slow, the
effort is even, if hits an
obstruction obstructs being sure
not to make an effort to make an
effort, returns first slowly
sends in again.
3, the control box body
should be vertical and the outer
covering electricity earth.
4, the electrically
controlled cabinet and a
combustible mass depositing
distance should conform to the
related standard requirement.
5, the electric cable
enters the connecting box and
warm controls the box to be
supposed to put on the metal
vlexible hose.
6, constructs the MI
heating electric cable not to be
able to fold or the overbending
hardly.
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