liquid nitrogen tank

1、 Product Introduction

The liquid nitrogen replenishment series is mainly used for storing liquid nitrogen in central laboratories and is the latest high-performance low-temperature liquid nitrogen storage container.

Core function: Utilize a small amount of liquefied gas in the space to generate pressure, causing the container to automatically discharge liquid, thereby replenishing liquid for other containers.

Design advantages:

Stainless steel design structure, suitable for the most demanding usage environment

Reduced evaporation loss rate

Standard configuration:

Boosting valveDrain valveDrain valvepressure gauge

200L and above containers: add safety structures such as rupture discs and mufflers

All models: equipped with four mobile swivel casters for easy use and movement of containers in different locations

Main target audience: laboratory users and chemical enterprise users, used for liquid nitrogen storage and automatic supply of liquid nitrogen

2、 Product Features

1. Neck design: low evaporation loss rate

2. Protective operating ring: a protective operating ring

3. Safety structure: Stainless steel tank body with * safety structure

4. Convenient to move: with casters for easy mobility

5. Liquid level monitoring: can be equipped with a liquid level gauge

6. Remote transmission: It can achieve remote signal transmission

7. Low temperature control: can be equipped with low-temperature solenoid valve and low-temperature stabilizer

8. Automatic fluid replacement: fully automatic fluid replacement function can be configured

9. Warranty service: One year standard maintenance, five-year vacuum warranty

3、 Self pressurization principle

1. Initial state

When the inner container is filled with liquid nitrogen:

The vent valve, drain valve, and pressure increasing valve are closed

Tighten the liquid nitrogen injection port plug

2. Boosting process

① In the absence of any leaks mentioned above, due to the heat transfer from the container shell to the pressurization tube, some of the liquid nitrogen that enters the tube on its own is absorbed and vaporized

② Open the pressure boosting valve, and the vaporized nitrogen gas immediately enters the upper space of the inner tank liquid level through the valve; At the same time, the liquid nitrogen inside the container continuously enters the pressurization tube to absorb heat and vaporize

③ Due to the fact that the volume of vaporized nitrogen is more than 600 times that of liquid nitrogen, a large amount of nitrogen obtained from the vaporization of a small amount of liquid nitrogen continuously enters the inner tank through the opened pressure boosting valve

④ As the amount of nitrogen entering increases, the nitrogen accumulated in the upper space of the inner tank gradually begins to exert pressure on the inner tank wall and liquid surface

⑤ When the pressure gauge reaches 0.04 MPa, open the drain valve and liquid nitrogen will be discharged through the drain pipe