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Temperature loading device for neutron scattering experiment

A neutron scattering and loading device technology, which is applied in material analysis using radiation diffraction, material analysis using wave/particle radiation, measuring devices, etc., can solve problems such as not having automatic sample change function, and achieve safe and reliable performance The effect of shortening operation time and reducing labor intensity

Pending Publication Date: 2017-06-13
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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Problems solved by technology

The Chinese patent literature database has disclosed a Chinese patent (Patent No.: 201310032334) titled "An In-Situ Stress-Temperature Loading Device for Neutron Diffraction Technology" and "An In-Situ Temperature Loading Device for Neutron Diffraction" The Chinese patent (Patent No.: 201520986073.2) of "Loading Device" both involves an in-situ temperature loading device for neutron diffraction. However, when the in-situ temperature loading device in these two patents performs temperature loading on multiple samples, both The experimenter manually changes the measurement sample, neither of the two patents has the function of automatic sample change

Method used

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  • Temperature loading device for neutron scattering experiment
  • Temperature loading device for neutron scattering experiment
  • Temperature loading device for neutron scattering experiment

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Embodiment 1

[0028] Such as Figure 1-4 As shown, the temperature loading device for neutron scattering experiments of the present invention includes a heating furnace, a translational sample stage, and a pneumatic lifting support; the heating furnace includes a furnace cavity 1, an incident window plate 2, an exit window plate 3, a water-cooled Tube 4, the translational sample stage includes a servo electric cylinder 5, a sample table top 6, and a sample stage base 12, and the pneumatic lifting support includes a lifting cylinder 7, a high position limit switch 8, a low position limit switch 9, a movable Support 10, lifting base 11; The described furnace body cavity 1 is provided with neutron entrance hole, neutron exit hole, and the bottom is provided with sample loading hole; Its connection relation is that incident window plate 2, exit window plate 3 are fixed on successively Outside the neutron injection hole and neutron exit hole of the furnace cavity 1, the water cooling tube 4 is i...

Embodiment 2

[0037]The structure of this embodiment is the same as that of Embodiment 1, except that the materials of the incident window plate 2 and the exit window plate 3 are made of sapphire, and the water-cooled pipe 4 is made of copper material, and the two ends are connected by circulating water pipes On the constant temperature water pump with refrigeration function, eight sample fixing brackets are arranged on the sample table 6, and the stroke range of the servo electric cylinder 5 is 720mm.

[0038] After the above implementation, the present invention can carry out the neutron measurement experiment under the in-situ temperature environment of neutron diffraction on the cold neutron diffraction spectrometer, the maximum loading temperature is 1000 degrees, and the automatic measurement of eight sample stages can be performed at one time.

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Abstract

The invention provides a temperature loading device for a neutron scattering experiment. The device comprises a heating furnace assembly, a translation sample stage assembly and a pneumatic lifting bracket assembly, wherein the heating furnace assembly comprises a furnace body cavity, an incident window plate, an emergent window plate and a water cooling pipe; the translation sample stage assembly comprises a servo electric cylinder, a sample stage surface and a sample stage base; the pneumatic lifting bracket assembly comprises a lifting air cylinder, a high position limit switch, a low position limit switch, a movable bracket and a lifting base. A sample loading hole is formed in the heating furnace in the temperature loading device for the neutron scattering experiment, is matched with the pneumatic lifting bracket assembly to complete automatic loading and unloading of the heating furnace of samples, and is coordinated with a blocking state of the translation sample stage assembly, so that in-situ temperature environment loading of multiple samples and automatic switching of the samples in the neutron scattering (diffraction) experiment can be achieved, the labor intensity of an experimenter and the ray irradiation risk are reduced, and the sample switching time is shortened.

Description

technical field [0001] The invention belongs to the technical field of environmental loading in the application of neutron scattering (diffraction), and in particular relates to a temperature loading device for neutron scattering experiments. Background technique [0002] Neutron scattering (diffraction) diffraction technology has nondestructive testing and deep penetration characteristics, and can directly measure the internal microstructure, interface structure, internal defects and other characteristics of materials, and many characteristics of materials will be affected by the temperature environment. In order to study the effect of temperature on material properties, it is necessary to use an in-situ temperature loading device to change the temperature environment of the sample to be tested, and then use a neutron dispersion (diffraction) spectrometer to measure the change mechanism of the material affected by temperature. Since neutrons and gamma rays exist in the neut...

Claims

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Application Information

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IPC IPC(8): G01N23/20
CPCG01N23/20033
Inventor 庞蓓蓓孙光爱李新喜屠小青闫冠云王燕黄朝强龚建
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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