Backflow prevention components for adiabatic calorimeters

Abstract

The invention provides a backflow preventing part for an adiabatic calorimeter. The backflow preventing part comprises an adiabatic calorimetric test ball, a backflow preventing pipe fitting and a support pillar, wherein the backflow preventing pipe fitting is mounted in the adiabatic calorimetric test ball, and the pipe diameter of the adiabatic calorimetric test ball is reduced, so that the vapor volume in a pipeline in a high temperature environment is reduced in the test process, the volume of backflow liquid is reduced, reaction heat obtained during the measurement is relatively accurate, and the testing is unlikely to be stopped due to a backflow effect; and the support pillar is fixedly connected with the backflow preventing pipe fitting and is used for supporting the backflow preventing pipe fitting. According to the backflow preventing part, a vapor backflow effect in the adiabatic calorimetric test can be effectively reduced, the production cost is low, the experiment operation is simple, the backflow preventing part can be repeatedly used, and furthermore, the testing accuracy can be improved.

Description

technical field [0001] The invention relates to an anti-reflux component for an adiabatic calorimeter, which belongs to the field of adiabatic calorimetry test. Background technique [0002] In the existing adiabatic calorimeter, which is a device for measuring the thermal hazard of substances, there is a steam reflux effect, which causes the heat of decomposition of the sample obtained in the test to be lower than the actual heat generated. This is due to the structure of the test ball used in the adiabatic calorimeter caused by. At present, the adiabatic calorimeter mainly uses two kinds of test balls. The first test ball has a diameter of 1 / 4 inch. This structure is convenient for adding samples into the test ball. However, when testing some volatile substances, due to the diameter of the test ball Larger, it will cause a large amount of steam to enter the pressure pipe, and the temperature of the pressure pipe is close to the external ambient temperature, so heat exchan...

AI Technical Summary

Problems solved by technology

[0002] In the existing adiabatic calorimeter, which is a device for measuring the thermal hazard of substances, there is a steam reflux effect, which causes the heat of decomposition of the sample obtained in the test to be lower than the actual heat generated. This is due to the structure of the test ball used in the adiabatic calorimeter caused by

At present, the adiabatic calorimeter mainly uses two kinds of test balls. The first test ball has a diameter of 1 / 4 inch. This structure is convenient for adding samples into the test ball. However, when testing some volatile substances, due to the diameter of the test ball Larger, it will cause a large amount of steam to enter the pressure pipe, and the temperature of the pressure pipe is close to the external ambient temperature, so heat exchange occurs between the steam and the environment in the pipe, causing the steam to condense, and the condensate will re-enter the test ball along the pressure pipe, so that The temperature of the sample decreases, so that the temperature cannot rise during the test, and the heat generated by the reaction or decomposition of the substance cannot be measured; the diameter of the second test bulb is 1 / 8 inch, and this structure will reduce the amount of steam entering the pressure pipe. However, there is still a small amount of backflow liquid re-entering the test ball

Images