Brazed Plate Heat Exchanger For Mineral Oil Operational For Mini
Air Chiller BPHE
Product Description
Brazed plate heat exchanger maintenance needs to pay attention to
the following matters:
1. Brazed plate heat exchanger scale blockage: When the heat
exchanger is blocked by scale, it can be reverse cleaned with
weakly acidic aqueous solution (5% ammonium sulfate or
peroxide-acid can be applied). In order to improve the actual
cleaning effect, it can be pressurized and cleaned with centrifugal
pump. It is best to clean the acid in the system software with a
lot of cold water after pickling and passivation.
2. Brazed plate heat exchanger plate field leakage: when this
situation occurs, it is generally impossible to repair, because the
heat exchanger commonly used brazing material is ultra-low
temperature solution, the high temperature caused by maintenance
welding usually melts the surrounding brazing material, resulting
in water leakage in other areas around.
3. Brazed plate heat exchanger on the interface leakage or cracks:
the situation is more cheerful than the second point, but the
maintenance difficulty factor is still very large.
4. Brazed plate heat exchanger internal crack or leakage: because
brazed plate heat exchanger is electric welding welding type, such
a situation can not be repaired, only disassembly.
Naturally, for the damage of the above two and three points, you
can also try welding repair, but be sure to pay attention to the
following issues:
1. Clean the maintenance place before welding, and brush the
surface of welding with chlorate flux.
2. The brazed plate heat exchanger is placed before welding, the
heat exchanger is filled with water, and the welding area is
wrapped with a wet cloth to prevent the high temperature caused by
welding from being transmitted to the surrounding area and melting
other areas or endangering the compressive strength of welding.
3. Should be controlled continuous electric welding welding time is
not suitable for too long, in order to reduce excessive heat
damage.
4. Electric welding commonly used silver-based welding wire, the
silver content of at least 45% above, welding temperature need not
exceed 650℃, in order to prevent damage to the compressive strength
of electric welding.
| Model | BL26 |
| Width, A [mm] | 111 |
| Height, B [mm] | 310 |
| Length, E [mm] | 10+2.36n |
| Horizontal port distance, C [mm] | 50 |
| Vertical port distance, D [mm] | 250 |
| Max pressure [Mpa] | 3 |
| Max flowrate [M3/h] | 8.1 |
| Weight [kg] | 1.3+0.12n |
Model
BL1
| Model | BL14 | BL20 | BL26 | BL26C | BL50 | BL95 |
| Width, A [mm] | 78 | 76 | 111 | 124 | 111 | 191 |
| Height, B [mm] | 206 | 310 | 310 | 304 | 525 | 616 |
| Length, E [mm] | 9+2.3n | 9+2.3n | 10+2.36n | 13+2.4n | 10+2.35n | 11+2.35n |
| Horizontal port distance, C [mm] | 42 | 42 | 50 | 70 | 50 | 92 |
| Vertical port distance, D [mm] | 172 | 282 | 250 | 250 | 466 | 519 |
| Max pressure [Mpa] | 3 | 3 | 3 | 3/4.5 | 3/4.5 | 3/4.5 |
| Max flowrate [M3/h] | 3.6 | 3.6 | 8.1 | 8.1 | 12.7 | 39 |
| Weight [kg] | 0.6+0.06n | 1.0+0.08n | 1.3+0.12n | 2.2+0.16n | 2.6+0.19n | 7.8+0.36n |
| Model | BL120 | BL190 | BL200 | BL1400 | BL100 * | BL200 * |
| Width, A [mm] | 246 | 307 | 321 | 429 | 248 | 322 |
| Height, B [mm] | 528 | 696 | 738 | 1398 | 495 | 739 |
| Length, E [mm] | 13+2.36n | 13+2.75n | 13+2.7n | 22+2.78n | 10+2.15n | 13+2.55n |
| Horizontal port distance, C [mm] | 174 | 179 | 188 | 220 | 157 | 205.2 |
| Vertical port distance, D [mm] | 456 | 567 | 603 | 1190 | 405 | 631 |
| Max pressure [Mpa] | 3 | 3 | 2.1 | 1.5 | 3/4.5 | 3/4.5 |
| Max flowrate [M3/h] | 42 | 100 | 100 | 300 | 42 | 100 |
| Weight [kg] | 7.2+0.52n | 12.5+0.72n | 13+0.75n | 31.8+1.73n | 6.5+0.37n | 13+0.78n |
