
Vacuum Insulated Pipe
Vacuum Insulated Pipe
Introduction
Vacuum Insulated Pipe (also named as VIP) is designed to minimize cryogenic fluid heat loss. It is composed of outer pipe, inner pipe, MLI (Multi-layer insulation), spacers, absorbent, bellow structure for compensation and evacuation valve. On-site welding couplings or Johnston couplings are adopted between each pipeline, featuring easy installation and maintenance. VACREE can design and manufacture VIP for various of cryogenic fluids. such as LHe, LN2, LH2, LAr, LNG, etc. VIP is extensively applied in LNG, space, research laboratory, pharmaceutical industries, etc.
Specifications
Design Temperature | ≥-270℃ |
Medium | LHe、LO2、LN2、LH2、LAr、LNG etc. |
Insulation | High Vacuum +MTL insulation |
Heat Loss | 0.5-2W/m |
Vacuum Leakage | ≤1×10-10Pa·m3/s |
Vacuum | ≤4.0×10-3Pa |
Material | Stainless Steel |
Strength Test of Inner pipe | 1.5*Nominal Pressure |
Air Seal Test of inner pipe | 1.1*Nominal Pressure |
Applicable Standard | EN13408, ASME B31.3. Other code upon request |
Item | Specifications | Inner Pipe (mm) | Outer Pipe (mm) |
1 | DN4 | Φ6 | Φ38 |
2 | DN6 | Φ8 | Φ38 |
3 | DN8 | Φ10 | Φ57 |
4 | DN10 | Φ12 | &Φ57 |
5 | DN15 | Φ20 | Φ78 |
6 | DN20 | Φ25 | Φ89 |
7 | DN25 | Φ32 | Φ89 |
8 | DN32 | Φ38 | Φ108 |
9 | DN40 | Φ45 | Φ108 |
10 | DN50 | Φ57 | Φ114 |
11 | DN65 | Φ76 | Φ133 |
12 | DN80 | Φ89 | Φ159 |
13 | DN120 | Φ108 | Φ168 |
14 | DN125 | Φ133 | Φ219 |
15 | DN150 | Φ159 | Φ273 |
16 | DN200 | Φ219 | Φ352 |
17 | DN250 | Φ273 | Φ408 |
1、≤DN100 bayonet connection to be preferred | |||
2、>DN100 to be Welding ends | |||
3、DN>250 can be supplied upon request as well. |