- Product Introduction
In response to the needs of biomedical and scientific research institutions, Qingdao Putian Company has developed special containers with ultra-low temperature insulation performance, using vacuum insulation technology and intelligent control systems to ensure the safety and reliability of sample storage. The main products are:
1. Liquid nitrogen biological container
ARKTEK is a passive vaccine storage device. Although not very attractive, it has become an important device for saving the lives of many impoverished populations due to its ability to conveniently and safely store vaccines, and is known as the "bucket of life". Our company produces this Arktek with super vacuum sealing effect, without the need for power supply. The bucket contains 8 ice packs and a three-layer separated vaccine box, which can keep the internal temperature between 2 ℃ and 89 ℃ for 35 days. It is easy to operate, easy to maintain, and vaccine can be accessed at any time. It is specifically designed for transporting vaccines in African regions with power shortages and inconvenient transportation.
The structure of this biological tank is roughly similar to that of a gas cylinder, mainly including an inner liner, outer shell, neck tube support part, interlayer insulation part, and external protection part. And to achieve higher vacuum degree and lower thermal conductivity
Made a new breakthrough design: 1. Stainless steel corrugated pipe+bimetallic ring design 2. Sandwich insulation design.
Improvement points:
Multiple weld seams were used to verify the feasibility of specialized machine welding and robotic arm welding, and the welding quality was inspected and welding parameters were adjusted using flaw detection rating methods to overcome the porosity defects in the pot table metal welding. Due to the limited evacuation heating temperature (≤ 120 ℃), the evacuation efficiency was limited. Other methods to improve the evacuation speed were explored (evacuation equipment renovation: full coverage of internal and external electric heating mode, improvement of evacuation port design).
2. Gas phase liquid nitrogen tank
Comprehensive software functions
User Management: Multiple levels of user permissions can be set
Security lock: equipped with electronic and mechanical locks to ensure the safe storage of samples.
Monitoring of liquid nitrogen level: Capacitive sensors are used to measure the liquid level, with a measurement range from the bottom to the top of the tank, which can continuously and stably display changes in liquid level.
Temperature monitoring: PT100 temperature sensors are used, located at the top and bottom of the tank, to accurately measure the temperature inside the entire liquid nitrogen tank (with an accuracy of ± 0.1 ℃).
Sound and light alarm and remote alarm: There are multiple alarm functions to remind users of potential or ongoing problems, such as high temperature alarm, high/low liquid level alarm, hot gas bypass alarm, long-term lid opening alarm, solenoid valve normally open/closed alarm, sensor fault alarm, etc., and have SMS, phone, mobile app,
Various remote alarm functions such as WeChat mini programs.
Data storage: Automatic data storage, with a storage time of 30 days, and dual recording functions for temperature, liquid nitrogen level, system access data, and curves.
One click defogging function: convenient for users to access samples clearly.
Humanized design: 10 inch LCD screen, easy visual operation, stainless steel auxiliary workbench, can be used for temporary placement of freezer racks, front armrest design, double-layer foot pedals, convenient for users to take and place samples.
Core Technology Advantages
Design for the use of gas and liquid phases: When using gas phase, ensure that the sample does not come into contact with liquid nitrogen to prevent cross infection of the sample.
Scientific storage design: Liquid nitrogen tanks of the same model have more sample storage capacity, ranging from 13000-125800 2ML standard cryovials.
Extremely strong insulation performance: advanced evacuation technology, insulation technology, and high vacuum persistent maintenance technology are adopted to ensure the safe storage of samples and good uniform temperature characteristics
Hot gas bypass design: Before liquid nitrogen injection, the high-temperature nitrogen gas in the pipeline is discharged to avoid temperature fluctuations in the liquid nitrogen tank, ensure sample safety, and effectively reduce additional liquid nitrogen consumption.
Automatic fluid replenishment and continuous liquid level monitoring: Capacitive sensors are used to measure the height of the liquid level in the tank and display real-time changes in the liquid level to ensure safe and reliable automatic fluid replenishment.
Vortex type liquid addition: vortex baffle design, liquid nitrogen enters the inner tank and collides with the tank wall to create a vortex, ensuring smooth liquid addition.
