Vacuum stainless steel liquid nitrogen, liquid oxygen, liquid argon, LNG pipelines DN8-DN200
Contact Info
- Address:南宮市育才路, Zip: 055750
- Contact: 孫杰藝
- Tel:13831990820
- Email:13831990820@163.com
Other Products
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Vacuum Insulated Pipe Technology Design and Features
1. The inner pipe has a shrinkage rate of 0.3% at liquid nitrogen temperature; for rigid pipes, compensators are installed;
2. High-vacuum multilayer insulated cryogenic shut-off valves, check valves, emergency shut-off valves, and safety relief systems are installed on the pipeline;
3. Push-pull vacuum connection joints feature low heat leakage, no frosting, and anti-frosting properties;
4. Both inner and outer pipes are made of austenitic stainless steel 06Cr19Ni10 (or customized according to customer requirements);
5. Premium specialized multilayer insulation materials and gas adsorbents are used in the interlayer;
6. Supports with low thermal conductivity;
7. Application fields: industrial gases, medical, biological, electronics, aviation, automotive, beverage, and various other industries;
8. Transport media: liquid nitrogen (LIN), liquid argon (LAr), liquid oxygen (LOX), LNG.
Installation Features of Vacuum Insulated Pipes
1. Plug-in connection, commonly referred to as vacuum flange connection; segmented fabrication with vacuum flange connections between pipe sections;
2. Welded connection, commonly referred to as welded connection; segmented fabrication with welded joints for cryogenic insulated pipes, using on-site insulation;
3. Professional guidance for installation;
4. Shortens installation time, reduces installation workload, and lowers installation costs.
Vacuum Insulated Pipe Specifications and Main Technical Parameters | |||||||||||||
Specification (mm) | DN15 | DN20 | DN25 | DN32 | DN40 | DN50 | DN65 | DN80 | DN100 | DN125 | DN150 | DN200 | DN225 |
Inner Pipe (mm) | Φ20 | Φ25 | Φ32 | Φ38 | Φ45 | Φ57 | Φ76 | Φ89 | Φ108 | Φ133 | Φ159 | Φ219 | Φ245 |
Outer Pipe (mm) | Φ76 | Φ76 | Φ89 | Φ108 | Φ108 | Φ114 | Φ133 | Φ159 | Φ168 | Φ219 | Φ219 | Φ273 | Φ325 |
Heat Leakage (W/m) | 0.49 | 0.53 | 0.63 | 0.76 | 0.90 | 1.01 | 1.30 | 1.59 | 1.93 | 2.40 | 2.87 | 3.82 | 4.29 |
Working Pressure | ≤4MPa (designed according to user requirements) | ||||||||||||
Design Temperature | -196℃ | ||||||||||||
Transport Media | LNG, LOX, LIN, LAr, LHe, etc. | ||||||||||||
Vacuum Interlayer Leak Rate | ≤1×10-10Pa·m3/s | ||||||||||||
Vacuum Interlayer Leak and Outgassing Rate | ≤1×10-8Pa·m3/s | ||||||||||||
Sealing Vacuum Degree | ≤5×10-2Pa | ||||||||||||
Vacuum Degree at Liquid Nitrogen Temperature | ≤5×10-3Pa | ||||||||||||
Ambient Temperature | -40℃ to 60℃ | ||||||||||||
Interlayer Safety Device Opening Pressure | 0.2MPa | ||||||||||||
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