Cryogenic pipelines refer to pipelines that can work normally in a low-temperature environment, and their design, materials and construction need to consider the influence of low temperatures. Different standards or specifications may vary depending on the temperature definition of cryogenic pipes.
Generally speaking, the temperature of low-temperature pipes in industrial pipes is defined as t≤-40°C. That is, when the operating temperature of the pipe is lower than or equal to -40°C, it is considered a cryogenic pipe. In addition, there are corresponding low temperature definitions according to the classification of the operating temperature of vessels and valves, but these are more specific to specific equipment or components than to the pipe itself.
It is important to note that these temperature definitions are based on industrial applications in general. In practice, the specific temperature definition may also need to take into account factors such as specific industries, process conditions, material properties, and safety requirements. Therefore, when designing and using cryogenic pipes, it is recommended to refer to relevant industry standards, specifications or consult professional engineers to ensure the safety and reliability of pipelines.
What is the difference between cryogenic tubing and cryogenic fluids?
There are distinct differences between cryogenic tubing and cryogenic fluids in several ways.
First of all, cryogenic pipes are specific equipment or structures that are mainly used to transport liquids or gases in a low-temperature environment. The design and manufacturing process needs to consider the impact of low temperature environment on materials to ensure the reliability and safety of pipelines at extremely low temperatures. Cryogenic pipes are usually made of various materials, such as carbon steel, stainless steel, nickel alloys, etc., to adapt to the low temperature environment and prevent breakage or leakage. At the same time, in order to maintain the sealed state and avoid material leakage and energy waste, the connection of the cryogenic pipeline is usually welded, socket connection, etc.
Cryogenic fluids, on the other hand, refer to those liquids or gases that are below a certain temperature. For example, liquid nitrogen, liquid oxygen, and liquid hydrogen are all typical low-temperature fluids that all have boiling points well below room temperature. These cryogenic fluids have a wide range of applications in a variety of fields, including medicine (e.g., cryosurgery), the food industry (e.g., frozen food), biological research (e.g., cryobiology), the electronics industry (e.g., cryoelectronics), gas production (e.g., fractionation), and the oil and gas industry (e.g., LNG production).
In summary, cryogenic tubing and cryogenic fluids are significantly different in definition, function, and application. A cryogenic pipeline is a device that transports cryogenic fluids, which in turn are the mediums that are transmitted in the pipelines. Both play a key role in their respective fields and together form an important part of cryogenic technology.
