Mineral Insulated Electric Heater Device for Pipeline Welding Joint
is suitable for manual welding, semi-automatic and automatic
welding operation for steel pipeline. For the repair port and other
separate operations, it is also possible to use the welding joint
electric heating to ensure the stability of heating temperature.
1. Product structure and completeness
1)Product structure
Using stainless steel material as the main structure frame for the
welding joint electric heating belt, MI heating cable with
stainless steel sheath is used as heating element, and enhanced
aluminum silicate fiber rope of high temperature resistance is used
as internal insulation material. The outer protection is a flexible
stainless-steel shell.
The energy storage spring of welding joint electric heating belt
can absorb stably the thermal elongation generated during the
working process.
A mounting clasp is applied can be locked with a quick installation
and safe self-locking power outlet.
Installation thread of temperature sensor is to facilitate
automatic temperature control.
Rubber-sheathed cable withstands cold temperature of -20℃.
2)Complete set
According to the actual use of the site and the requirements of
welding process, a welding joint using two welding joint electric
heating belts and an insulation quilt and a set of circuit
protection control box (optional with automatic temperature
control) are designed accordingly, combined into a set of welding
joint heating device.
2. Technical features and model name
1). Technical characteristics
a) easy to operate and use
The welding joint of the electric heating belt is compact, strong,
with high surface heating intensity, high service temperature and
suitable for field construction conditions.
A belt can be installed after one installation action, and it can
be continuously used in the welding process simply and
conveniently.
b) Welding quality is secured by a fast temperature increase.
The pipe welding joint can be heated up in 20 minutes to 80 ℃ or
higher, (reference diameter Ф1016 with a wall thickness of 14.6
mm). Normal mechanical interface operation will not be affected by
preheating operation.
The welding joint temperature reaches the standard, so that the
construction and supervision unit can rest assured about the
welding quality.
Heating does not affect pipe welding while welding and weld bead
repair operations do not affect heating. That no process crosses,
improves work efficiency. (5 more welding beads can be welded
averagely in a day)
c) High temperature and corrosion resistance
There is a flexible stainless steel shell on the welding joint
electric heating device, which can resist the splash or burning of
arc and welding slag during processing.
d)Energy and cost saving
Welding joint heating device is pure resistive load, installed to a
field welding generator coordinated with inductive load, which can
improve the power factor of the generator, increase output, make
full use of the abundant backup power of the field welding
generator, so there is no need to increase energy and costs.
e) Safe and secure
Complete set of product possesses high electrical insulation
strength to ensure the safety of users with special grounding wire
and leakage protection switch.
f) convenient maintenance
Under normal and correct conditions, there is basically no
maintenance workload.
When not in use, it is like other mobile appliances, need to be
placed in a dry place to avoid accidental impact.
Once the insulation layer is affected by moisture absorption, the
device can be electrified for self - drying before normal use
again.
3.Model naming
The product name is composed of "product name" and the applicable
"pipe outer diameter", with "-" interval in the middle.
4. Main technical parameters
| Model specification | Rated voltage(V) | Rated power(W) | Overall Dimension (mm)(L×W×H) | Insulation Quilt Size (mm) (L×W×T) | Reference Weight(kg) | Applicable pipe diameter (mm) |
| HKD-1219 | 380/220 | 10500 | 3820×65×32 | 1500×70×40 | 8 | 1219 |
| HKD-1016 | 380/220 | 9000 | 3165×65×32 | 1500×70×40 | 7 | 1016 |
| HKD-914 | 380/220 | 7200 | 2900×65×32 | 1500×70×40 | 6.5 | 914 |
| HKD-820 | 380/220 | 6000 | 2600×65×32 | 1200×70×40 | 6 | 820 |
| HKD-711 | 380/220 | 4800 | 2260×65×32 | 1200×70×40 | 5.5 | 711 |
| HKD-630 | 380 | 4200 | 2010×65×32 | 900×70×40 | 5.3 | 630 |
| HKD-529 | 380 | 3900 | 1690×65×32 | 900×70×40 | 5 | 529 |
| HKD-426 | 220 | 3300 | 1370×65×32 | 900×70×40 | 4.8 | 426 |
| HKD-355 | 220 | 2300 | 1285×65×32 | 600×70×40 | 2.9 | 355.6 |
Note: other pipe standard outside diameter can also be produced
