Low temperature in the blue sky -- basic knowledge of Dewar

Basic knowledge of Dewar

Dewar outer structure: Dewar generally has four valves, namely liquid use valve, gas use valve, vent valve, booster valve. In addition, there are gas pressure gauges and liquid level gauges. Dewar stored when not in use and can not open the pressure valve, be sure to check the pressure valve is shut, otherwise it will cause leakage of gas bottle.

Use: Dewar is widely used in mould industry, animal husbandry, medicine, food, chemical, semiconductor, aerospace, low temperature steel base, bridge steel structure factory, shipbuilding, heavy machinery manufacturing, military industry and other manufacturing industries.

The role of dewar:

1. It can be used to transport and store cryogenic liquid gas, and can also be used as the cold source of other refrigeration devices,

2, small and simple industrial pipeline centralized gas supply (relatively short pipe length);

3, the work site can directly supply gas, and its use in the form of compressed gas cylinders similar to, can be directly connected to the end user use;

The advantages of Dewar

1. It has the advantages of safe and reliable operation, easy to discharge liquid and low evaporation rate of static liquid.

2, compared to compressed gas cylinders, it can hold a large amount of gas at relatively low pressure.

3. It provides an easy to operate cryogenic liquid source.

4, because the dewar is solid, long holding time, and contained in the gas supply system, gas flow at room temperature continuous output up to 9.2m3/h by its internal vaporizer and output pressure up to 1.2MPa (the highest gas constant pressure type) /2.2 MPa (high), fully meet the requirements of gas under normal circumstances.

5, set up multi-level safety protection device, better security, and simple and reliable operation.

6, large storage capacity, can reduce the storage site, reduce bottle change operation, improve work efficiency.

7. Clean bottle body, higher purity of gas supply. Because it is liquid gas direct vaporization supply, to avoid the cylinder gas from filling, transportation to use process, because the link is more likely to suffer from the two pollution caused by quality hidden trouble.

8, gas utilization rate is high: cylinder gas after each use must be left more than pressure, and the six party liquid gas supply can avoid any waste, reduce the cost of gas.