450L Nitrogen Dewar Cryogenic Liquid Container

liquid nitrogen dewar,cryogenic liquid container

450L Nitrogen Cryogenic Liquid Container
Nitrogen Cryogenic Liquid Container450L liquid nitrogen dewar
supplies  cryogenic tanks to safely contain liquefied gases such as nitrogen, oxygen, argon and carbon dioxide.
These gases are stored at extremely low temperatures and in a liquid state.

Cryogenic Liquid Container, liquid nitrogen dewar

A Cryogenic Liquid Container, also known as a liquid cylinder, is designed for the reliable and economic transportation and storage of liquefied gases at cryogenic temperatures, typically colder than –130°F (–90°C).
These containers are used to store gases such as nitrogen, argon, oxygen, helium, carbon dioxide, and nitrous oxide that have been cooled to a liquid state.

 cryogenic liquid container

Cryogenic Liquid Container

Model DSW450-175-1.37 DSW450-175-2.3 DSW450-195-1.37 DSW450-195-2.3 DSW450-210-1.37 DSW450-210-2.3 DSW450-210-3.0
Nominal volume(L)

175

175

195

195

210

210

210

Effective capacity(L)

160

160

177

177

191

191

191

Dimension(diameter*height)

Φ510*1557

Φ510*1557

Φ510*1673

Φ510*1673

Φ510*1767

Φ510*1673

Φ510*1673

Working pressure (Mpa)

1.37

2.3

1.37

2.3

1.37

2.3

3.0

Safety valve open pressure(Mpa)

1.59

2.41

1.59

2.41

1.59

2.41

3.45

Bursting disk open pressure(Mpa)

2.41

3.6

2.41

3.6

2.41

3.6

5.17

Evaporation rate(Lin)(%/d)

<2.1

<2.1

<2.0

<2.0

<2.0

<2.0

<2.0

Empty weight(kg)

≈130

≈142

≈133

≈152

≈131

≈165

≈165

 

Max filling weight

(kg)

LO2

≈182

≈182

≈202

≈202

≈218

≈218

≈218

LN2

≈129

≈129

≈142

≈142

≈154

≈154

≈154

LAr

≈224

≈224

≈248

≈248

≈268

≈268

≈268

LNG

≈68

≈68

≈75

≈75

≈75

≈75

≈75

LCO2

≈188

≈209

≈225

≈225

Level gauge

Floating level

Floating level

Floating level

Floating level

Floating level

Floating level

Floating level

Surface treatment

Polish

Polish

Polish

Polish

Polish

Polish

Polish

Base type

Rubber base

Rubber base

Rubber base

Rubber base

Rubber base

Rubber base

Rubber base

 

welded Insulated cryogenic liquid container, dewar cylinder

What is a cryogenic storage dewar?

The cryogenic dewar, named after James Dewar, is a type of vacuum flask used to store cryogens like liquid nitrogen and helium.
Their boiling points are lower than the room temperature. Cryogenic dewars can take many forms, including open buckets or flasks fitted with loose stoppers.
They may also be self-pressurized tanks. All dewars are constructed with two or more layers of walls, and a vacuum is maintained between them.
welded Insulated cryogenic liquid container, dewar cylinder
Cryogenic liquid containers are essential in various industries, including healthcare, where they are used to store and transport blood and biological samples without damaging tissue structure, and in aerospace for pressurizing fluid systems.
They are also used in the food industry for applications like catering, and in metalworking and welding.
The containers are equipped with insulation systems to maintain the extremely low temperatures necessary to keep the gases in a liquid state.
This allows for a large volume of gas to be stored in a relatively small container, which expands into gas when needed.
welded Insulated cryogenic liquid container, dewar cylinder

Inspection guarantee of cryogenic liquid container, liquid nitrogen dewar:

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(cryogenic liquid container).
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 of 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 cleanliness.
The inner and outer surfaces of the outer containers will be subject to overall sandblasting treatment to meet the requirements of the Sa-2.5 standard.
When the surfaces of steel plates show a 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, after being manufactured, will be subject to 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.
welded Insulated cryogenic liquid container dewar cylinder