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Full-metal small-volume container and volume determination system and method

A volume measurement and measurement system technology, applied in volume measurement instruments/methods, liquid/fluid solid measurement, container/cavity capacity measurement, etc. Long service life, low outgassing rate, and the effect of avoiding reading errors

Active Publication Date: 2017-04-19
BEIJING RES INST OF URANIUM GEOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an all-metal small-volume container and its volume measurement system and method, which solve the technical problems of low measurement accuracy and poor test accuracy of small-volume containers

Method used

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Embodiment Construction

[0039] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0040] Such as figure 1 As shown, an all-metal small-volume container provided by the present invention includes a first normally closed cylinder 1, a first carbon steel drive rod 2, a first welded bellows 3, a first silver sealing gasket 4, a stainless steel pipe outlet Air port 5, second stainless steel spherical valve head 6, second normally closed cylinder 7, second carbon steel drive rod 8, second welded bellows 9, second silver sealing gasket 10, stainless steel pipe air inlet 11, to be tested Small volume 12, first stainless steel spherical valve head 13 and base 14. The ends of the cylinder rods of the first normally closed cylinder 1 and the second normally closed cylinder 7 all have internal threads, and the internal threads realize the connection with the first carbon steel driving rod 2 and the second carbon steel driving rod 8 re...

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Abstract

The invention belongs to the fields of accurate determination of the composition and content of rare gas isotopes, and particularly discloses a full-metal small-volume container and a volume determination system and method. The container comprises a first normally closed type air cylinder, a first carbon steel driving rod, a first welding corrugated pipe, a stainless steel pipe gas outlet, a second normally closed type air cylinder, a second carbon steel driving rod, a second welding corrugated pipe, a stainless steel pipe gas inlet, a to-be-detected small-volume container and a base. The system includes a high-precision diaphragm gauge communicating with the stainless steel pipe gas inlet of the full-metal small-volume container, a stainless steel cold trap, a first metal valve, a second metal valve, a small-volume container with known size, a third metal valve, a fourth metal valve, a fifth metal valve, an oil-free molecular pump group, and a high-purity carbon dioxide gas bottle. The technical problems of large small-volume container measurement error and low sensitivity are solved.

Description

technical field [0001] The invention belongs to the field of accurate measurement of rare gas isotope composition and content, and in particular relates to an all-metal small-volume container and its volume measurement system and method. Background technique [0002] The composition and content determination of noble gas isotopes in samples is mainly done by noble gas mass spectrometer. The isotope composition of the rare gas separates each isotope of the rare gas to be measured through the high resolution of the mass spectrometer, and receives it simultaneously through different receivers or changes the magnetic field to receive it in the same receiver "peak jumping" method, and the mass spectrometer itself will detect each isotope Therefore, it is necessary to prepare a certain proportion of isotope gas to correct the mass spectrum for mass discrimination. The method of preparing isotope standard gas is to transfer one isotope of a gas with a small gas volume to another ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N27/62G01F17/00
CPCG01F17/00G01N1/28G01N27/62G01N2001/2893
Inventor 李军杰张佳刘汉彬金贵善张建锋韩娟钟芳文
Owner BEIJING RES INST OF URANIUM GEOLOGY
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