Cryogenic liquid fluid preparation device

Abstract

The invention discloses a low-temperature liquid-state fluid preparing device. The device comprises a refrigerator and further comprises a gas inlet pipe, a gas flow baffle and a low-temperature container, wherein a second-stage cold head of the refrigerator is located below a first-stage cold head of the refrigerator, the gas flow baffle is arranged on the outer side of the joint between the first-stage cold head and the second-stage cold head, and a low-temperature container sleeve is arranged on the outer side of the first-stage cold head, the second-stage cold head and the gas flow baffle in a sleeving mode; a space defined by the low-temperature container, the first-stage cold head and the gas flow baffle is used as a first-stage cold head pre-cooling cavity, a space defined by the low-temperature container, the second-stage cold head and the gas flow baffle is used as a second-stage cold head pre-cooling cavity, and a gas port is formed in the gas flow baffle and communicated with the first-stage cold head pre-cooling cavity and the second-stage cold head pre-cooling cavity; the gas inlet pipe is communicated with the first-stage cold head pre-cooling cavity, and a condenser is arranged below the second-stage cold head. According to the device, the cold heads are used for directly refrigerating gas in the cold head pre-cooling cavities, a refrigerating mode is more direct, a thermal short circuit between the cold heads is avoided, the device is good in refrigerating effect, and the yield of low-temperature liquid-state fluid is high per unit of time.

Description

technical field [0001] The invention relates to the technical field of low-temperature preparation, and more specifically, relates to a low-temperature liquid fluid preparation device. Background technique [0002] With the development and application of physics in modern science and technology, the test and preparation technology has also been expanded and extended. Among them, low temperature technology is one of the important foundations of modern physics test and application. Many tests and material preparation need to be carried out at low temperature. It can only be carried out under certain conditions, such as experimental research in environments such as ultra-low temperature, ultra-high pressure, and strong magnetic field. Superconductors that can only work in a low-temperature environment and space detection devices that work in a high-vacuum ultra-low temperature environment are inseparable from the support of low-temperature technology. On the other hand, the in...

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Problems solved by technology

Since the coil is directly connected to the primary cold head and the secondary cold head, it will cause a thermal short circuit between the primary cold head and the secondary cold head

Due to the different working temperature zones of the two-stage cold head, the condensation power of the second-stage cold head will decrease due to thermal short circuit, which will eventually lead to a decrease in the cooling efficiency of this refrigeration method, which in turn will result in a decrease in the output of liquid fluid

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