High Efficiency Carbon Steel Boiler Sprial Fin Tube Heat Exchanger
Compact Structure
Sprial fin tube is an efficient heat transfer element with helical fin.Its
heat transfer area is several times to several tens times of that
of the optical tube, which can strengthen heat transfer, reduce
flow resistance and reduce metal consumption, thus improving the
economy and operation reliability of heat exchange equipment.At
present, spiral fin tube has been widely used in various
boilers.The spiral fin tube can be manufactured by various methods.
At present, the fin tube used for boiler, pressure vessel and other
heat transfer equipment mainly has the following manufacturing
methods: high frequency resistance welding spiral fin tube, brazing
spiral fin tube and integral spiral fin tube.The manufacturing
method, performance evaluation index, application and advantages of
integral spiral fin tube are introduced in detail.
Advantages
Spiral finned tube has been widely used in the heat recovery of
coal economizer, air preheater and waste heat boiler, as well as
heat exchange equipment in chemical industry and pressure
vessel.The capacity of the unit used in the boiler is also
increasing.At present, a number of professional manufacturers in
China can produce high-frequency welding and brazing spiral fin
tubes, and the production equipment and technology of fin tubes can
be introduced, digested and absorbed to be developed, designed and
manufactured by themselves, and the quality has met the
requirements of advanced foreign standards .
Advantages of using finned tube:
1) the heat transfer area is increased in the effective space to
improve the heat transfer effect.
2) reduce the space occupied by the heat transfer surface and
reduce its volume, especially suitable for the quick loading
boiler.
3) reduce equipment costs and improve equipment security.
4) the reduction of water side pressure drop reduces the operating
cost.
5) the stiffness of the fin tube is increased, and the anti-seismic
capability of the tube is improved.
Types
High frequency resistance welding spiral fin tube
High-frequency resistance welding spiral fin tube is in be weldment
import high power high frequency current, by using the current
welding joint contact area and adjacent area to produce the
resistance of the hot melt welding contact surface to melt or half
of the plastic state, and then give the appropriate pressure
welding contact surface, thus complete finned tube welding work.
Brazing spiral fin tube
Brazing spiral fin tube is a kind of solder which is filled with a
solder with a melting point lower than that of the solder, and then
heated the solder welding temperature. When the solder does not
melt, the fusion well of solder is wetted and welded, and the
solder joint is formed by spreading out the contact point of the
solder piece, so as to complete the welding of spiral fin tube.
Integral spiral fin tube
Integral spiral finned tube is using thick wall tube (tube billet)
in medium frequency under the condition of continuous heating, make
the pipes after squeeze squeeze, copper and a molding whole spiral
finned tube, see the latest a method of manufacturing finned tube
has been developed by a domestic company whole spiral finned dad
and homemade integral fin tube manufacturing equipment have been
applied for a patent.
Below is our normal products:
| H fin(stainless) H fin(ND-steel) H fin(CS) |
| Spiral(stainless) Spiral(CS) |
| Integrated(CS) Serrated(CS) |
| Bare tube(stainless) |
