We can provide self-produced Dewar flasks and supply cryogenic liquids through Dewar flasks, which are suitable for long-distance transportation and effectively reduce the overall cost to meet customers’ liquid needs.
Zhongke Fuhai’s liquid helium dewar series products are suitable for the transportation and storage of low-temperature liquid helium. They are reliable products specially produced for the use of liquid helium in low-temperature superconductivity, nuclear magnetic resonance, big science and other fields. As an important part of the low-temperature system of the liquid helium temperature zone, the whole series of products adopts vacuum insulation multi-layer wrapping, steam cooling and low-temperature condensation adsorption technology to effectively reduce the evaporation rate of liquid helium. The industry-leading insulation technology design does not require liquid nitrogen pre-cooling, and is easy to use and maintain.
| Specifications | FHDW100 | FHDW250 | FHDW500 |
| Recommended capacity L | 100 | 250 | 500 |
| Maximum capacity L | 110 | 275 | 530 |
| Weight KG | 100 | 160 | 260 |
| Material | S30408 | S30408 | S30408 |
| Static evaporation rate %/day | 1.5 | 1.25 | 1 |
| Working pressure Mpa | 0.07 | 0.07 | 0.07 |
| Design pressure Mpa | 0.09 | 0.09 | 0.09 |
| Diameter mm | 600 | 800 | 1100 |
| Height mm | 1500 | 1700 | 1700 |
| Depth from flange to bottom of inner tank mm | 1170 | 1530 | 1420 |
| Minimum outer diameter of pipeline that can be inserted mm | 9.5 | 9.5 | 9.5 |
| Maximum outer diameter of pipeline that can be inserted mm | 12.7 | 19 | 19 |
| Main safety valve pressure setting pasig | 10 | 10 | 10 |
| Auxiliary safety valve pressure setting pasig | 0.5 | 0.5 | 0.5 |
| Vent port pipe size | 1/2″ | 1/2″ | 1/2″ |
The liquid hydrogen dewar is designed to minimize the loss of liquid hydrogen during storage, transportation and distribution. The dewar uses key low-temperature technologies such as high-efficiency vacuum insulation coating technology, steam cooling multi-cold screen technology, and low-temperature condensation adsorption to effectively reduce the evaporation rate of liquid hydrogen.
| Specifications | 100 | 250 | 400 |
| Recommended capacity L | 100 | 250 | 400 |
| Maximum capacity L | 110 | 275 | 440 |
| Dewar outer diameter (mm) | 660 | 813 | 1016 |
| Dewar height (mm) | 1422 | 1626 | 1575 |
| Tank weight (kg) | 114 | 186 | 293 |
| Full load weight (kg) | 121 | 204 | 321 |
| Daily evaporation rate (%/d) | 2.4 | 1.9 | 1.25 |
| Transport pressure (psi) | 15 | 15 | 15 |
| Maximum working pressure (psi) | 50 | 50 | 50 |
| Tank and export pipe specifications | 1/2X6″ | 1/2X6″ | 1/2X6″ |
| Castor size (mm) | 101.6 | 127 | 127 |
| Vent pipe specifications | 3/4″ | 3/4″ | 3/4″ |
