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 Gas phase liquid nitrogen tank

Gas phase liquid nitrogen tank gas phase liquid nitrogen tank system

Type number
Parameters (1) The dewar tank is used for independent liquid supply or low temperature pipeline is used to connect liquid nitrogen storage tank for centralized liquid supply.
(2) When the amount of liquid nitrogen in the sample storage tank is lower than the set value, the solenoid valve is automatically opened to make up liquid. When the liquid level reaches the specified height, the solenoid valve is closed and liquid filling is stopped.
(3) Each sample storage tank is equipped with an intelligent liquid nitrogen container monitoring and management system, which can automatically measure the temperature of biological samples and control the liquid nitrogen level in the container.
(4) The intelligent liquid nitrogen container monitoring and management system equipped with each sample storage tank has data memory, MODBUS RS485 communication protocol, temperature, liquid level, valve switch status, overrun alarm, cover opening alarm and fault
Gas phase liquid nitrogen tank Details
 
1. Product introduction
Gas phase liquid nitrogen tank storage system has a highly integrated differential pressure type automatic liquid level measurement and automatic control system, which greatly improves the safety of the overall liquid nitrogen storage system and the safety and reliability of sample storage while replacing manual operation. The storage and extraction efficiency of samples is greatly improved. The utilization rate of laboratory area storage space can be maximized. Through the centralized liquid supply of low temperature pipeline or the liquid supply from the matching liquid replenishing tank, the consideration of the operation fatigue and safety of the storage tank can be greatly reduced. Efficiency is another consideration, which can improve the reliability of biological samples. The whole system uses the remote monitoring system to monitor the status of the liquid nitrogen tank, and sends various operation instructions remotely through the monitoring room. At the same time, it has the functions of data storage, printing, wireless alarm and so on.
The low oxygen alarm system is installed in the liquid nitrogen freezer, which can automatically exhaust and extract air, so as to prevent the danger of suffocation caused by excessive oxygen concentration in the operation environment. Gas phase liquid nitrogen tank system is widely used in large livestock frozen semen station, hospital blood bank, stem cell storage center, biological sample storage center of Scientific Research Institute, etc.
In 1898, it solved the problem of liquid nitrogen heat loss caused by the liquid nitrogen storage tank and liquid nitrogen storage tank. With the development of science and technology and the progress of human society, high vacuum multi-layer insulation technology and its new materials and new processes have been adopted, which makes the liquid nitrogen tank have excellent insulation performance, which can minimize the natural evaporation loss of liquid nitrogen (- 196 ℃). Therefore, liquid nitrogen tank products are widely used in animal husbandry, medical and scientific research, mechanical processing and other fields. Liquid nitrogen was used as refrigerant to preserve animal semen, organs, bacteria and other biological samples, cryogenic treatment of metal materials and cryogenic assembly of precision parts.
 
The advantages and disadvantages of two gas phase liquid nitrogen tank and ordinary liquid phase liquid nitrogen tank are compared
For large-scale units using liquid nitrogen biological containers, the traditional manual operation mode has the following disadvantages:
1. Artificial addition of liquid nitrogen makes labor intensive;
2. Scattered sample storage, inconvenient management;
3. Frequently opening the cover and adding liquid will cause the temperature in the container to fluctuate greatly, which may lead to the damage of some stored samples;
4. The frequent addition of liquid nitrogen may cause the safety hazard of low oxygen concentration in the operating environment.
 
3、 System scheme
Gas phase liquid nitrogen tank The biological sample bank system is supplied by liquid replenishment system or cryogenic pipeline liquid supply system. Instead of manual operation.
 
4、 System function
(1) Using Dewar bottle Independent liquid supply or centralized liquid supply by connecting liquid nitrogen storage tank with low temperature pipeline.
(2) When the amount of liquid nitrogen in the sample storage tank is lower than the set value, the solenoid valve is automatically opened to make up liquid. When the liquid level reaches the specified height, the solenoid valve is closed and liquid filling is stopped.
(3) Each sample storage tank is equipped with an intelligent liquid nitrogen container monitoring and management system, which can automatically measure the temperature of biological samples and control the liquid nitrogen level in the container.
(4) The intelligent liquid nitrogen container monitoring and management system equipped with each sample storage tank has the functions of data memory, MODBUS RS485 communication protocol, temperature, liquid level, valve switch status, overrun alarm, cover opening alarm, fault alarm, etc. the instrument panel adopts touch screen to display various parameters in the form of chart. At the same time, the signal is transmitted to the control center independently, and its service condition is monitored by microcomputer.
(5) The samples stored in each sample storage tank can be collected by bar code scanning gun and directly transmitted to the intelligent liquid nitrogen container monitoring instrument. At the same time, the signal can be transmitted to the control center of the monitoring room, and the use of the computer can be monitored remotely.
(6) The low temperature solenoid valve can be controlled by microcomputer automatically or manually, so that liquid nitrogen can be replenished automatically at low liquid level and stopped automatically at high liquid level.
(7) The company's internal LAN can be established so that each monitoring department can observe the storage status.
(8) The alarm function of mobile phone short message can be realized by microcomputer to ensure remote monitoring.
(9) Automatic check and power-off alarm function every 10 seconds ensure accurate, reliable and stable performance of measurement and control.
(10) Windows operating system, graphical man-machine interface, simple operation.
(11) Gas phase liquid nitrogen tank adopts high vacuum multilayer insulation design, which has low evaporation loss rate of static liquid nitrogen and low operation cost. And provide no less than three years in vacuum quality assurance.
(12) The freezing management area can be equipped with automatic hypoxia alarm system to monitor the oxygen concentration at multiple points. When the oxygen concentration exceeds the standard, it will alarm automatically and start the fan for ventilation automatically, so as to prevent the operator from operating when the oxygen concentration is too low, and ensure the safety of the operator. Special safety instructions

 

1. The liquid nitrogen tank must be used safely!
2. When using the gas-phase liquid nitrogen tank, the doors and windows must be opened to make the air convection and ensure good ventilation. The volatile liquid nitrogen may lead to a small range of hypoxia, causing slight asphyxia and affecting personal safety!
3. The pipeline connected with the gas-phase liquid nitrogen tank must be firm to prevent liquid nitrogen from running, emitting, leaking, dripping and splashing, so as to ensure the safety of operators!
4. After the gas phase liquid nitrogen tank is out of use, the liquid inlet valve must be closed and the power supply must be cut off!
5. The safe and qualified three hole power socket with grounding must be used to ensure the correct and reliable grounding and personal safety!
6. Gas phase liquid nitrogen tank must be far away from heat sources, inflammables, corrosive gases, strong magnetic field, dust and oil contaminated places!
7. Gloves must be worn when taking out frozen products from the gas phase liquid nitrogen tank to prevent frostbite!

1. Technical parameters:
 
model Ydd-850 gas phase liquid nitrogen tank
Tank parameters
Liquid nitrogen quantity at the bottom of tray (L) one hundred and thirty-five
Volume of sample storage space (L) six hundred and ninety-four
Geometric volume of tank (L) nine hundred and fifty-nine
Effective volume of tank (L) eight hundred and ninety
Tank diameter (mm) four hundred and sixty-five
Internal effective height (mm) seven hundred and seventy-three
Tank outer diameter (mm) one thousand one hundred and ninety
Total tank height (mm) one thousand five hundred and fifty-nine
Empty weight of tank (kg) four hundred and forty-one
Tank operation height nine hundred and eighty
Full load total weight (kg) 1160 
Door width requirement ≥ mm one thousand two hundred and ten
Daily evaporation rate% 0.85%   (1.14L)
supply voltage 220VAC、24VDC
Maximum storage quantity of 2ml inner rotating frozen tube
Quantity of 1.2,1.8,2ml inner rotating frozen tubes forty-two thousand and nine hundred
Quantity of 5 × 5M3 pail thirty-two
Quantity of 10 × 10 m3 bucket four
Quantity of 5 × 5 boxes fifty-two
10 × 10 box quantity four hundred and sixteen
Layers of square bucket thirteen
 
 
2. Product characteristics:
 
① Compatible with gas and liquid storage modes;
② A variety of capacity options to meet your storage needs to the maximum extent;
③ More samples are stored in the unit area to reduce the storage cost;
④ Excellent temperature uniformity and stability;
⑤ Excellent temperature stability after opening cover;
⑥ Advanced temperature and liquid level monitoring and alarm system can be connected to remote monitoring;
⑦ Automatic supply liquid nitrogen system, safe and labor-saving;
⑧ The microprocessor control system can save the operation data permanently;
⑨ One button defogging function, easy to find and take samples;
⑩ A number of humanized design, comfortable operation;
⑪ The cover can be locked to ensure the sample safety;
⑫ Integrated folding steps and auxiliary worktable are provided as standard;
⑬ The quality of the products certified by CE is in conformity with the requirements;
 
Intelligent control of three phase liquid nitrogen tank
(1) Intelligent control
Automatic and manual start / stop of liquid nitrogen supplement function
Control and protection function of liquid replenishing solenoid valve
Safety rehydration function
(2) high precision data acquisition, high-precision acquisition of temperature, liquid level height, battery power, liquid nitrogen evaporation loss rate and other data.
(3) Perfect alarm function: 19 kinds of fault alarm, the alarm mode is screen flash display + sound and light alarm, SMS alarm at the same time
Stimulate.
(4) convenient operation display
10 inch high resolution LCD touch screen display operation.
With message board function, it can prompt the successor to check the message of the previous shift;
(5) communication function
Standard Modbus protocol.
One independent RS-485 interface and Ethernet interface are provided.
The computer software of monitoring center is equipped to realize centralized monitoring of all biological containers.
(6) special functions
One key defogging function. If the temperature of the pipeline is higher than the threshold value, it will automatically open the vent solenoid valve to release the hot gas.

 
Four phase liquid nitrogen tank supply system -- liquid nitrogen supply tank
The liquid nitrogen supply tank uses a small amount of liquid nitrogen in the pipe to generate pressure, so that the container can automatically discharge liquid nitrogen, so as to supplement the liquid nitrogen for other containers. The shell is made of 304 austenitic low temperature special stainless steel, and the two-way multi-level safety system ensures the safety and reliability of the product, reasonable valve layout and safe and convenient operation.
The flange vacuum hose is used for flexible connection between the make-up tank and the gas-phase liquid nitrogen tank
Make up tank
model Parameter (geometric volume L)
YDZ-500 five hundred
 
 



 
5、 Data management system
   
The main features of data management system are as follows
(1) the core key data shall be kept for no less than 25 years.
(2) it can be easily connected to other types of data monitoring system.
(3) multiple data security protection system.
1. Hardware: the hardware of the monitoring center is composed of monitoring workstation, system server, storage server, web server, router, printer, online UPS, voice alarm system, SMS alarm system, large screen LCD TV wall or computer (optional).
2. Software: the system software consists of three modules
1. Liquid nitrogen tank monitoring: real time acquisition of low and high temperature, detection of liquid level height; automatic opening and closing of liquid inlet solenoid valve according to liquid level value and temperature value; sending alarm information.
3. Safety monitoring. Power distribution monitoring: real time monitoring of the power supply and consumption status of the liquid nitrogen storage area of the biological sample library, to ensure that any power failure is informed and handled in the first time, and to ensure the automatic liquid filling and fault alarm of liquid nitrogen tank.


 
6. Hypoxic concentration monitoring scheme
 
 
  • System introduction: this system is specially designed for the monitoring and control of oxygen concentration in liquid nitrogen storage. The system can collect the oxygen concentration in the tank in real time. When the oxygen concentration exceeds the set value (high limit or low limit), the ventilator will automatically / manually start the controller and give an alarm. The control box and sensor probe will display the measured value and status in real time, and the system can remotely view and store print records.
 

2、 System hardware technical parameters:
1. Intelligent control instruments and equipment to detect gas: oxygen
Alarm setting: program setting of the first level concentration alarm point
Second level concentration alarm point program setting alarm mode: sound and light alarm
Alarm volume: > 120dB
Alarm output: passive contact, capacity AC220V 5a, ambient temperature: - 10 ℃~ 50 ℃
Environmental humidity: < 90% non condensation power supply: AC220 V, 50 Hz < 4 W
Storage capacity of alarm records: 500
Installation: expansion bolt fixed to wall / column
 

 
2. Modular intelligent gas detector
Measurement range: 0-25% Vol
Display error: ≤± 5% F.S
Response time: T90 < 20s
Display mode: LED digital tube display or LCD display
Alarm output: passive switch output, capacity AC 220V 2A
Signal output: Standard 4-20mA signal
RS485 isolated digital signal
Working environment: - 30 ℃ - + 50 ℃;
Humidity < 90% RH, no condensation
Working voltage: DC24 V ± 15%
Explosion proof grade: Exd Ⅱ CT6
Protection grade: IP66
Installation: expansion bolt fixed to wall / column

3. Portable oxygen detection alarm
Portable oxygen detection and alarm device is used in the area without oxygen probe or in case of power failure. The instrument has sound, light and vibration alarm, which can effectively ensure the life safety of staff.
Display: STN large Chinese LCD display
Calibration: simple automatic zero and calibration procedure sensitivity: 1ppm or 1% LEL
Alarm mode: sound, light and vibration alarm
Battery: dc3.6v 1200mAh rechargeable lithium ion battery
Dimension and weight: 102mm × 56mm × 26mm 120g (including battery and alligator clip) measured gas: O2
Measurement range: 0-25% vol maximum range: 30% Vol
Error: ≤± 0.1% response time: ≤ 20 seconds
 

 
4. The ventilation fan shall be provided by the user
5. Fresh air source
6. The desktop computer is provided by the user
3、 Use
Near transmission 1
Start the power supply of the system; the control box and the probe are all displayed as normal. The operation status of the system can be observed on the control box. When the control box has been set in place, users usually only need to operate the power switch, without other complex settings.
 
 
Remote transmission
 
a) Connection
 
The remote transmission function of the system can be connected to the computer on the 485 communication interface of the office area, observe the actual state of the system, store and print alarm records.
 

 
b) Software
 
Directly click the "hypoxia concentration monitoring pipeline system" button to enter the interface; the actual operation status of the system can be viewed, and the alarm record can be saved and printed.

 
  seven Large gas phase liquid nitrogen tank The first generation of frozen shelf management system
 
The first generation of frozen shelf management system is composed of scan code printing equipment, memory and PC.
 
Product introduction - portable scanning code printing equipment has the function of large screen + key input + label printing. Convenient input of sample data, fast completion of a large number of label printing output. The data and sample size are stored in the memory card of the equipment. The memory card can be inserted into the computer, which is convenient to access the data in and out of the library at any time, and master the dynamic data of the sample library.
If there is special need for a single frozen storage tube or box, it can also be labeled separately to control the flow direction of in and out of the warehouse.
 
Operation process: the sample data and storage date are written, input and printed by the portable code scanning printing equipment, and pasted on the frozen storage rack. When the code is scanned in the warehouse, all the information of the frozen shelf, sample name (both in Chinese and English) number, warehousing date, and other information that can be edited can be seen.
 
 


 
Bande liquid nitrogen tank series products provide one year free after-sales service
Five year vacuum warranty.
Tel: 010-80204245
Mobile phone: 15611258074
Q Q: 2678388834
Email: 2678388834@qq.com
Address: Anshun South Road, Huangcun, Daxing District, Beijing
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