Welded Insulated Container
The DSW Cryogenic Liquid Nitrogen (LN2) Dewar Tank is a reliable and efficient solution for storing liquid nitrogen.
This specialized container utilizes Dewar technology, creating a vacuum-insulated environment that minimizes LN2 evaporation.
Key Features:
Vacuum Insulation: DPL series dewar cylinders utilize advanced vacuum insulation technology to minimize heat transfer and maximize cryogenic liquid holding times.
Durable Construction: Manufactured from high-quality materials, these cylinders offer exceptional strength and durability for reliable long-term storage and transportation.
Multi-Gas Compatibility: The DPL series can accommodate various cryogenic liquids, including liquid oxygen, nitrogen, argon, carbon dioxide, and liquefied natural gas (LNG). [Optional: Specify any limitations on gas compatibility based on model].
Transportation and Storage: DPL series dewar cylinders are suitable for both road transportation of cryogenic liquids and on-site storage and supply.
Level Gauge: Each cylinder comes equipped with a level gauge (float type or capacitance type) for accurate monitoring of cryogenic liquid volume.
Safety Features: DPL series dewar cylinders incorporate safety features such as a pressure relief valve and a bursting disc for added protection.
Specifications
| Specification | DPL450-195-1.4 | DPL450-195-2.0 |
|---|---|---|
| Volume (L) | 195 | 195 |
| Effective Volume (L) | 175.5 | 175.5 |
| Size (Diameter × Height) (mm) | Φ508 × 1623 | Φ508 × 1626 |
| Working Pressure (MPa) | 1.4 | 2.0 |
| Set Pressure of Main Safety Valve (MPa) | 1.59 | 2.41 |
| Set Pressure of Bursting Disc (MPa) | 2.6 | 3.6 |
| Evaporation Rate (Liquid Nitrogen) | ≤2.0% | ≤2.0% |
| Empty Weight (kg) | 124 | 144 |
| Maximum Filling Weight (kg): | ||
| Liquid Oxygen | 200 | 200 |
| Liquid Nitrogen | 142 | 142 |
| Liquid Argon | 245 | 245 |
| LNG | 74 | – |
| Level Gauge | Float type or Capacitance | Float type or Capacitance |
Applications:
Liquid nitrogen offers a wide range of applications across various fields. The DSW Dewar Tank is perfectly suited for:
- Medical Research and Cryopreservation: LN2 plays a vital role in medical research, enabling the preservation of blood, organs, tissues, and reproductive cells at ultra-low temperatures.
- Laboratory Experiments: LN2 is a crucial element in numerous laboratory experiments, providing extremely cold temperatures for various scientific studies.
- Industrial Processes: Certain industrial processes require cryogenic temperatures, and LN2 is a common choice for applications like food freezing and metal treatment.
- Personal Uses (Gardening): LN2 can be a unique tool for gardeners. By spraying weeds with LN2, you can freeze them, allowing for easy removal and conversion into organic fertilizer.
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Inspection guarantee of welded Insulated container:
The relevant welding seams will be subject to 100% RT non-destructive testing and penetrant testing (PT) according to the technological requirements of storage tank production.
High-purity nitrogen (up to 99.999%) will be used to conduct the strength testing.
Finally, advanced helium mass spectrometer leak detectors (with precision up to 2×10-9Pa.L/s) will be used to conduct Helium mass spectrometer leak detection.
The inner containers of the storage tanks will be passivated by overall pickling to meet the cleanliness requirements for dangerous goods.
Imported ultraviolet black light lamps will be used to make sure that there is no oil stain and other organic impurities in the inner containers.
The inner and outer containers, after cleaning, will be assembled at a time interval less than 2.5 hours.
After assembling, the inner containers and interlayers will be filled with nitrogen to protect them from dust and organic impurities, so as to ensure the cleanliness.
The inner and outer surfaces of the outer containers will be subject to overall sandblasting treatment to meet the requirements of Sa-2.5 standard.
When the surfaces of steel plates show the metallic color, a vacuum cleaner will be used to suck off the dust adhered to the surface so as to further ensure the vacuum degree in the interlayer.
Special high-quality perlite is used as the insulation material in the interlayer.
The perlite will be treated by using our company’s special process before being in the interlayer.
All the internal cylinders of welded Insulated container, after manufactured, will be subject to the gas-tight and pressure performance tests.
Both the internal and outer cylinders will be subject to rigorous Helium mass spectrum leak detection.
After the production is completed, all the pipe openings will be opened to carry out nitrogen purging and replacement, so as to meet the oxygen usage standard.
After this, all the pipelines and valves will be sealed and the tanks will be filled with 0.2MPa high-purity nitrogen for protecting the tanks.
