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Low-temperature vessel with weighable inner container

A low-temperature container and liner technology, which is applied in the field of metrology and testing, can solve problems such as inability to eliminate or quantify compensation, and achieve the effect of improving accuracy utilization and safety

Active Publication Date: 2015-03-04
BEIJING INST OF AEROSPACE TESTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method additionally introduces the error of the counterweight system, such as the friction at the knife edge of the balance balance, the influence of the inertia of the counterweight in the dynamic process, etc. These errors are random errors and cannot be eliminated or quantitatively compensated

Method used

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Embodiment Construction

[0027] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] as attached figure 1 As shown, the present invention provides a cryogenic container with a weighable inner tank, comprising an outer tank, a weighing inner tank, a liquid inlet pipe 12, a buffer 8, a neck seal assembly 13, a bottom valve 5 and a bottom valve Control gas pipeline 6;

[0029] The outer tank includes an outer tank body 4, a container leg, an anti-vortex plate 19, an electrostatic grounding plate 21, an outer tank neck pipe 15, and a tank in which both ends of the outer tank body 4 are spherical and the middle section is cylindrical body, one end of the outer tank neck tube 15 is welded to the center of the outer tank body 4 upper end, so that the outer tank body 4 communicates with the inner cavity of the outer tank neck tube 15, and the other end of the outer tank neck tube 15 It is a flange structure, the center line of the outer t...

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Abstract

The invention discloses a low-temperature vessel with a weighable inner container and belongs to the technical field of metrology testing. The vessel comprises an outer tank, a weighing inner container, a liquid inlet pipe, a neck seal assembly, a bottom valve and a bottom valve control gas pipeline, wherein the outer tank is fixedly arranged on the ground; the weighing inner container is suspended and positioned in the outer tank; the neck seal assembly is used for connecting or disconnecting the outer tank and the weighing inner container with the outside; the liquid inlet pipe enters into the weighing inner container by virtue of the outer tank; the bottom valve is capable of controlling the connection or disconnection between the weighing inner container and the outer tank by virtue of the bottom valve control gas pipeline. The low-temperature vessel is capable of weighing the inner container of the vessel independently, the zero-friction weighing of low-temperature medium weight change in dynamic weighing is realized and the measurement accuracy loss is overcome.

Description

technical field [0001] The invention relates to a low-temperature container whose inner tank can be weighed for flow calibration of low-temperature liquid, and belongs to the technical field of measurement and testing. Background technique [0002] In the field of cryogenic flow calibration, the main calibration method used is the dynamic weighing method. This method requires weighing the cryogenic vessel. The weighing method only requires accurate weighing of the amount of medium change in the container, but in fact the weight of the container is added. Different from normal temperature containers, cryogenic containers are generally heat-insulated containers, directly weighing the container will add the weight of the extra outer container or insulation layer, the extra weight will cause the loss of measurement sensitivity by about half, which is not conducive to the improvement of flow calibration accuracy. [0003] At present, there is a method of taring and weighing the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D90/00B65D90/48
CPCB65D90/00B65D90/48
Inventor 周磊陈锋朱子环王成刚叶斌于涛张溪王占林耿卫国管理李斌黄必尧
Owner BEIJING INST OF AEROSPACE TESTING TECH
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