Vieri experiment thermostats

A thermostat and temperature regulator technology, applied in the field of measurement, can solve the problems of low control accuracy, automatic recording, and difficulty, and achieve the effects of high temperature control accuracy, good automation and simple structure
CN101118218AInactive Publication Date: 2008-02-06XIAN MODERN CHEM RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN MODERN CHEM RES INST
Publication Date
2008-02-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses a calorstat for a Christian Vieri experiment, and comprises a metal bath cavity body, an electrical heater, a sample cup bracket, a bracket driving mechanism, a temperature controller which contains a platinum resistance thermometer and a thermoregulator, and a temperature measured signal deduced mechanism which contains a conductive ring and a dynamic electrode group. The present invention is characterized in that the platinum resistance thermometer is directly positioned in a sample testing area. The conductive ring is connected with the output terminal of the platinum resistance thermometer. The dynamic electrode group is connected with the temperature signal input terminal of the thermoregulator. The lower end of the dynamic electrode group keeps a good contact with the conductive ring. When the bracket driving mechanism drives the sample cup bracket to rotate, the dynamic electrode group slides on the surface of the conductive ring, and the resistance value of the platinum resistance thermometer is transmitted to the thermoregulator, so the heating current of the electrical heater is controlled, Thereby the temperature of the sample placed area can be directly controlled and displayed in real time, and the standard requirement of the Christian Vieri experiment can be satisfied. The invention has the advantages of high temperature control precision, convenient use and low cost.
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Description

technical field

[0001] The invention belongs to the technical field of metering, and mainly relates to a metering device, in particular to a Vieri test thermostat used for the Vieri stability test of gunpowder. technical background

[0002] Vieri test, also known as litmus paper test, is a basic method of gunpowder stability test based on nitrate ester. The principle is: put a certain amount of sample (nitrate gunpowder or nitrocellulose) into a Vieux sample cup with litmus paper and seal it, and put the sample cup into a thermostat at 106.5±0.5°C Heating, observing the NO released by the decomposition of the sample 2 The time it takes for the color of the test paper to change when it interacts with the stone core test paper is used to judge the stability of gunpowder or nitrocellulose.

[0003] The Vieili test thermostat currently used in my country basically follows the structure of the former Soviet Union imported device. This is a cylindrical thermostat. Glycerin is p...

Claims

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