Pre-cooling system

Abstract

The embodiment of the invention relates to the technical field of low-temperature system precooling. A provided precooling system comprises a medium source system, a transmission pipeline, a first refrigerating device and a precooling sleeve, wherein the medium source system is connected with the transmission pipeline, the first refrigerating device is connected with the medium source system and the precooling sleeve, and the pre-cooling sleeve is thermally coupled with the transfer line. According to the precooling system provided by the embodiment of the invention, the precooling loop is arranged to precool and insulate the transmission pipeline, so that the problem that a medium source medium needs to be consumed in an existing open type precooling system technology is solved, and meanwhile, the problem that the manufacturing cost is high in an existing closed type precooling system technology is also solved. Meanwhile, in the medium supply process of the medium source system, the pre-cooling loop can continue to be connected with the refrigerating system to insulate the transmission pipeline, and the problem of temperature rise in the medium transmission process is solved. According to the pre-cooling system provided by the embodiment of the invention, it is unnecessary to consume an air source of a user additionally, so that the production cost is saved.

Description

technical field [0001] The invention relates to the technical field of low temperature system precooling, in particular to a precooling system. Background technique [0002] In low-temperature system experiments and applications, the initial state of the system is generally at room temperature. Before performing low-temperature experiments, the system needs to be cooled to the experimental temperature. Especially in the low-temperature medium source supply system, in order to ensure the safety of the system, avoid excessive pipeline stress caused by the impact of the low-temperature medium on the room temperature pipeline, and at the same time, in order to avoid the temperature rise of the prepared low-temperature medium that meets the use requirements when it is delivered to the user end , affect the use, the system pipeline must be pre-cooled before the system is used. The pre-cooling operation of the system pipeline directly affects the safety of the system, and also aff...

AI Technical Summary

Problems solved by technology

The closed pre-cooling method needs to add a separate cryogenic pump and corresponding cryogenic valves on the basis of the original system, which will increase the complexity of the system and significantly increase the manufacturing cost of the system

And if the medium of the system is a high-pressure medium and the refrigeration system is a low-pressure system, the high-pressure part and the low-pressure part of the system are not independent. In addition, additional resources are required to cool down the returning medium, which also increases the cost of time and manpower.

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