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Freezing apparatus for separated Hopkinson pole experiment measurement

A refrigeration device and separate technology, which is applied in the direction of measuring devices, analytical materials, non-electric variable control, etc., can solve the problems of large amount of liquid nitrogen consumption, low control accuracy, and long control process time

Inactive Publication Date: 2015-03-04
SUZHOU VOCATIONAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a refrigeration device for separate Hopkinson rod experiments, which aims to solve the problems of long control process, large amount of liquid nitrogen and low control accuracy of the measuring device provided by the prior art

Method used

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  • Freezing apparatus for separated Hopkinson pole experiment measurement

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Embodiment Construction

[0025] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] The present invention provides a kind of refrigerating device that is used for the experimental measurement of split Hopkinson bar, and described refrigerating device comprises:

[0027] A low-temperature environment box 18, which is provided with a sample 17 inside, and the low-temperature environment box 18 is connected with an incident rod 15 and a transmission rod 19;

[0028] A liquid nitrogen generating device, which includes: a liquid nitrogen tank 11, a heating wire A8 is provided inside the liquid nitrogen tank 11, and the liquid nitrogen tank 11 is connected to the low-temperature environment box 18 through a conduit 14, and a valve is provided on the cond...

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Abstract

The invention discloses a freezing apparatus for separated Hopkinson pole experiment measurement, belonging to the technical field of freezing apparatuses. The freezing apparatus comprises a low-temperature environment box, a liquid nitrogen generation device and a temperature control device, wherein the temperature control device comprises a temperature controller; the temperature controller comprises a signal input interface and a signal output interface; the signal output interface is sequentially connected with a phase inverter and a solid-state relay; the solid-state relay A is connected with a heating wire A; the signal input interface is connected with a temperature measuring unit; the temperature measuring unit is used for measuring the temperature of a sample; and a heating wire B is arranged on a conduit of the liquid nitrogen generation device. According to the device, due to the combined operation of the heating wire A and the heating wire B, the aim of simultaneously controlling the liquid nitrogen ejection speed and the liquid nitrogen outlet temperature is achieved, the time in the control process is short, and the amount of liquid nitrogen is small.

Description

technical field [0001] The invention belongs to the technical field of refrigerating device manufacture, in particular to a refrigerating device used for experimental measurement of a separated Hopkinson rod. Background technique [0002] The separated Hopkinson rod is an experimental device for measuring the mechanical behavior of materials at high strain rates. In addition to measuring the mechanical properties of materials at room temperature, the separated Hopkinson rod is more used to measure the changes in mechanical properties of materials at different temperatures. The ultra-low temperature environment in space (about -150°C) and the impact of space debris on the protective structure of the spacecraft are typical mechanical problems of materials coupled with low temperature and high strain rate. Therefore, in the process of measuring the mechanical properties of materials, a refrigeration device is needed. At present, the separate Hopkinson rod experimental device h...

Claims

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Application Information

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IPC IPC(8): G01N3/02G05D23/22
Inventor 张永康杨洪
Owner SUZHOU VOCATIONAL UNIV
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