Standard Dewar for measuring refrigeration performance of co-axial pulse tube refrigerator and manufacturing method of standard Dewar

A pulse tube refrigerator, a technology of refrigeration performance, which is applied to measuring devices, testing of machine/structural components, instruments, etc., can solve problems such as inconsistency in comparison and measurement, and achieve the effect of complete functions, compact structure and convenient installation.

Active Publication Date: 2015-02-18
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

The factors mentioned above require more resources and time in the evaluation and measurement of the cooling performance of coaxial pulse tube refrigerators, and the comparison o

Method used

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  • Standard Dewar for measuring refrigeration performance of co-axial pulse tube refrigerator and manufacturing method of standard Dewar

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Embodiment Construction

[0030] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples.

[0031] The invented standard Dewar for measuring the refrigeration performance of a coaxial pulse tube refrigerator consists of a vacuum cover 1, a measurement base 2, a bellows 4, a wiring seat 5, an air extraction interface 6, an adjustment ring 7, an installation seat 8, and a columnar thermometer 13 1, heating sheet 14, it is characterized in that, measuring base 2 integrates columnar thermometer 13 and heating sheet 14 into one, when adopting heat balance measurement method to measure refrigeration performance, provide heating power for pulse tube cold head 3 and make pulse tube cold head The cooling capacity of 3 is transferred to the columnar thermometer 13, wherein the heating plate 14 is fixed to the upper platform 16 by using the threaded hole 15 on the upper surface of the upper platform 16 of the ...

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Abstract

The invention discloses a standard Dewar for measuring refrigeration performance of a co-axial pulse tube refrigerator and a manufacturing method of the standard Dewar. The standard Dewar is composed of a vacuum cover, a measuring base, a corrugated pipe, a wiring seat, a pumping nozzle, an adjusting ring, a mount, a columnar thermometer and a heating plate. Functions of the vacuum cover, the heating plate and the thermometer are integrated. Thus the refrigeration performance of the co-axial pulse tube refrigerators within a certain size range is measured and evaluated in the convenient and rapid manner, interference factors of performance comparison of different co-axial pulse tube refrigerators are reduced in the maximum manner, the refrigeration performance comparison of the different refrigerators is more scientific, measuring time and resource of the refrigeration performance of the refrigerators is saved, and measuring efficiency is greatly improved.

Description

technical field [0001] The invention relates to a Dewar, in particular to a standard Dewar for measuring the refrigeration performance of a coaxial pulse tube refrigerator and a manufacturing method. Background technique [0002] The pulse tube refrigerator is a major innovation of the regenerative cryogenic refrigerator. It cancels the cold end ejector widely used in conventional regenerative cryogenic refrigerators (such as Stirling and G-M refrigerators), and uses heat The phase difference required for refrigeration is achieved by the operation of the end phase adjustment mechanism. The complete elimination of moving parts at the cold end has achieved low vibration, low interference and no wear at the cold end; and through important improvements in structure and phase modulation, in some typical temperature regions, its actual efficiency has reached regenerative low-temperature refrigeration highest value in the machine. These remarkable advantages have made pulse tube ...

Claims

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Application Information

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IPC IPC(8): G01M99/00
Inventor 党海政
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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